Refrigeration stone mill for processing ice-cold food, and method of use thereof

Abstract

A refrigeration stone mill for processing ice-cold food, and a method of the use thereof, which belong to the technical field of crushing and milling. The refrigeration stone mill comprises millstones, a drive system, a refrigeration system, a thermal insulation cover and a numerically controlled display, wherein the drive system and the refrigeration system are mounted below a lower millstone; the drive system is used for driving an upper millstone to rotate; and a cooling coil is indirectly attached to or directly embedded into the bottom surface of the lower millstone, or the cooling coil is embedded into a core of the lower millstone to be used for refrigerating the millstones and milled materials. In the present invention, the refrigeration stone mill mills additional ingredients of frozen ice cubes, frozen milk cubes or hard ice cream, and a refrigeration system performs refrigeration and thermal insulation on millstones, millteeth, a feed opening and materials, thus ensuring that during milling, the materials in the millstones do not undergo great temperature changes, do not melt and do not breed bacteria; and by means of combining refrigeration and thermal insulation with cooperative design of the tailor-made millteeth and rotation speeds, ice-cold drink products having different structural states can be obtained by means of milling, and the visual appearances and tastes thereof are all different. Especially for soft ice cream, a state in which the soft ice cream is soft and delicate and best releases flavor is achieved.

Description

Refrigeration stone mill for processing ice drinks and its use method Technical Field

[0001] The invention belongs to the technical field of crushing and grinding, and particularly relates to a refrigerated stone mill for processing ice drinks and a use method thereof. Background Art

[0002] Ice cream is a delicious heat-relief and summer-relief food. Thousands of years ago, ancient people would scrape ice or iced milk from ice cellars to create a fine slush. Later, stone tools like anvils and mortars were used to grind the ice, leading to breakthroughs in ice cream production and improved taste. However, in ancient times, there was no summer cooling technology, so ice cream was a luxury. It wasn't until 1900, with the widespread use of electricity and refrigeration, that the ice cream production process became faster, no longer dependent on natural temperature, and became a popular food. In modern times, with the increasing number of ice cream flavors, ice cream is no longer just a summer heat-relief treat; it has become a year-round snack.

[0003] There are generally two ways to produce ice cream: the first is to freeze the ice cubes first, then crush and shave them to make snowflake ice. This method is suitable for selling on-site processed ice cream or preparing iced milk tea. Due to the good taste of on-site production, this method is becoming more and more popular among modern young people; the second method is to make volume-expanded ice cream through processes such as mixing, sterilization, homogenization, aging, freezing and hardening. This method is suitable for pre-production of ice cream. The produced ice cream needs to be frozen for storage. During the frozen storage process, the ice cream will harden, affecting the soft and glutinous taste.

[0004] In the first production method, ice cubes need to be crushed in a grinder. This means that the ice cubes will come into contact with the metal components of the grinding paddles or other metal parts, resulting in a tinny smell in the resulting smoothie, which affects the taste. Furthermore, the grinder's grinding paddles only shear the ice cubes. This mechanical cutting process creates sharp edges in the ice, affecting the texture and preventing the desired soft and delicate taste. Furthermore, the shaved smoothie is simply mixed with other flavor ingredients (such as chopped fruit, nuts, grains, and cheese), resulting in a poor blending effect between the smoothie and other flavor ingredients, which also affects the taste.

[0005] Stone mill is also a type of crushing equipment with a long history. Stone mill crushes materials with not only shearing properties but also grinding properties. Grinding makes the crushed products more delicate and smooth, with smaller particle size and less angular shape, and tastes better when eaten. It has incomparable advantages over grinders. However, at present, the application of stone mills in the food industry is only at the stage of simply grinding grains. There are no stone mills for grinding frozen ice cubes, frozen milk cubes, or hard ice cream additives to make ice cream. This technology is still a gap in the market. With the popularization of refrigerator storage, the ice cream food industry now generally focuses on the taste improvement technology of pre-made ice cream, and does not pay much attention to historical heritage. It is difficult to think of using stone mills to grind ice cream and improve the taste. Moreover, there are many technical difficulties in using stone mills to grind ice and additives at the same time, such as:

[0006] 1. Ice cubes easily melt into water during the grinding process, losing the flavor and taste of ice cream;

[0007] 2. After the grinding is stopped, bacteria will grow inside the grinding disc, and subsequent ice products cannot be sterilized at high temperatures, making it difficult to meet food safety requirements;

[0008] 3. Ice cubes are harder and have a slippery surface, which makes feeding and grinding more difficult than grains. It is even more difficult to grind ice cream into a soft and delicate ice cream that melts in your mouth.

[0009] 4. The stone milling process of ice drinks will also be affected by the natural temperature changes, which can easily lead to inconsistent quality and it is difficult to always maintain uniform quality;

[0010] 5. Grinding ice cubes together with other flavor ingredients presents technical challenges. Different substances have different digestibility and speeds, making it difficult to achieve uniform mixing and good integration of different substances. Other flavor ingredients include room temperature fruit, frozen fruit, nuts, grains, cheese, etc.

[0011] 6. The shapes of ice cubes in ice drinks are divided into different forms, including snow flakes, slush, ice pellets, smoothies, ice foam and soft ice cream. Especially for soft ice cream products, how to grind it into an ice cream with a soft and delicate texture, melt-in-the-mouth, optimal flavor release, and consistent quality, and meet food safety requirements requires a lot of technical research.

[0012] Summary of the Invention

[0013] The current method of crushing ice cubes using a grinder will result in a product with a fishy smell, and the smoothie prepared by the grinder has a poor taste, which does not meet the requirements of a soft and delicate taste and good flavor integration. In addition, the use of stone mills to crush ice cubes to prepare soft ice cream is still a market gap, and it is necessary to overcome many technical difficulties such as refrigeration, grinding, insulation, and antibacterial. The present invention provides a refrigeration stone mill for processing ice drinks and a method for using the same, wherein a special stone mill is developed to grind frozen ice cubes, frozen milk cubes or hard ice cream with additional ingredients to prepare ice drinks in different textures; wherein a cooling pipe in a specially assembled form is designed to cool the grinding disc, grinding teeth and materials, thereby achieving the requirements of rapid cooling and stable temperature, thereby ensuring that the materials in the grinding disc do not experience a large temperature change during grinding, do not melt, and do not breed bacteria; a cooling ring is used to cool the upper grinding disc, thereby maintaining a low temperature at the feeding port, ensuring that the frozen materials do not melt at the feeding port and smoothly enter the grinding teeth, and also ensuring that the feeding port does not breed bacteria; a special grinding tooth is designed for grinding ice drink products, and combined with a cooling, heat preservation and speed design, the grinding mill can grind products in different forms such as snow flakes, slush, ice particles, smoothies, ice foam and soft ice cream, especially for soft ice cream products, which can achieve the effects of being soft and delicate, melting in the mouth, releasing the best flavor, and always having consistent quality; the specific technical scheme is as follows:

[0014] A refrigerated stone mill for processing ice drinks and beverages, comprising an upper grinding disc, a lower grinding disc, a drive system and a refrigeration system, wherein the upper grinding disc is fitted with the lower grinding disc; a drive system and a refrigeration system are provided below the lower grinding disc, wherein the drive system is used to drive the upper grinding disc to rotate; a cooling pipe of the refrigeration system is indirectly attached to or directly embedded in the bottom surface of the lower grinding disc, or a cooling pipe of the refrigeration system is embedded in the core of the lower grinding disc, for cooling the grinding disc and the ground material.

[0015] In the above technical solution, the cooling pipe is a single-layer coil or a multi-layer coil.

[0016] In the above technical solution, the bottom surface is indirectly attached in two ways, and you can choose one of them:

[0017] One method is that the bottom surface of the lower grinding disc is excavated with a cooling groove that is rectangular or circular as a whole, and the cooling groove is a sieve-shaped groove. A cooling copper bar is tightly embedded in the cooling groove, and the gap is filled with thermal grease. After the cooling copper bar is embedded, the cooling copper bar is flush with the bottom surface of the lower grinding disc; the bottom surface of the lower grinding disc after the cooling copper bar is embedded is attached to the cooling copper plate, and the bottom surface of the cooling copper plate is attached to the cooling pipe, and the cooling pipe is arranged in a spiral or "S" shape as a whole, and the gap between the pipes is filled with thermal grease. The bottom surface of the cooling pipe is sealed with insulating aluminum foil, and the bottom surface of the insulating aluminum foil is insulated by polyurethane foaming. The polyurethane foaming obtains an insulating bottom plate. The insulating bottom plate formed after the polyurethane foaming seals all the bottom components of the lower grinding disc to form a whole.

[0018] Another way is that a cooling copper plate is attached to the bottom surface of the lower grinding disc, and a rectangular or circular groove is dug on the bottom surface of the cooling copper plate. The groove is a spiral groove or an "S"-shaped groove. Cooling pipes are tightly embedded in the groove, and the gap is filled with thermal grease. The bottom surface of the cooling copper plate is insulated by polyurethane foaming. The polyurethane foaming obtains an insulating bottom plate. The insulating bottom plate formed after the polyurethane foaming seals all the bottom components of the lower grinding disc into a whole.

[0019] In the above technical solution, the bottom surface is directly embedded as follows: the bottom surface of the lower grinding disc is carved with a rectangular or circular pipe groove as a whole, the pipe groove is a spiral groove or an "S"-shaped groove, the cooling pipes are tightly embedded in the pipe groove, the gap is filled with thermal grease, and the bottom surface of the lower grinding disc is attached with an insulating bottom plate.

[0020] In the above technical solution, the disc core is inlaid as follows: the lower grinding disc includes a grinding plate that can be freely disassembled and assembled and a hollow disc body, the bottom surface of the grinding plate is carved with a card groove, and the hollow disc core of the disc body is inlaid with a "convex" type cooling copper plate, and the top surface of the "convex" type cooling copper plate is integrally provided with a card pin, and the card groove and the card pin are adapted to be plugged in, so that the grinding plate is assembled on the "convex" type cooling copper plate; the bottom surface of the "convex" type cooling copper plate is attached with a cooling pipe, and the cooling pipe is an overall rectangular or circular spiral arrangement or an "S" type arrangement; or the bottom surface of the "convex" type cooling copper plate is carved with an overall rectangular or circular groove, the groove is a spiral groove or an "S" type groove, and the cooling pipe is tightly embedded in the groove, and the gap is filled with thermal grease; the cooling pipe and the bottom surface of the lower grinding disc are attached with an insulating bottom plate.

[0021] In the above technical solution, the slot and the pin are circular, elliptical, rectangular, triangular, polygonal or crescent-shaped.

[0022] In the above technical solution, the lower grinding disc is made of stone, metal or plastic.

[0023] In the above technical solution, the thickness of the thermal insulation bottom plate is greater than 30 mm.

[0024] In the above technical solution, the diameter of the upper grinding disc is 200-600mm and the thickness is 100-300mm; the upper grinding disc is provided with a blind hole type center slot, a through hole type eccentric feeding port, an upper grinding tooth and a funnel slot; the diameter of the center slot is 60±5mm, and a "θ-shaped" cooling ring is embedded in the center slot; the diameter of the eccentric feeding port is 100±20mm, and a feeding bevel is provided downward at a height of 35±5mm from the bottom surface of the upper grinding disc, extending to the grinding tooth plane, and the feeding bevel is at an angle of 30±2° to the grinding tooth plane, and the feeding bevel is in a rounded angle to guide the flow to the center of the disc; the upper grinding teeth are divided into an inner ring coarse tooth area and an outer ring fine tooth area, and the inner ring coarse tooth area is divided into 8 sectors, from 5-10mm from the inner edge of the center slot to 35±5 from the outer edge of the disc surface. mm, each sector extends 90° outward from the inside, the coarse tooth height is 4±0.5mm, the vertical angle surface of the coarse tooth is 80~90° with the plane of the disk body, and the other angle surface is 5~10° with the plane of the disk body to form an angular tooth protrusion, and the coarse teeth are arranged at an oblique angle of 90±5° to the center line of the disk, forming a sharp coarse tooth area; the two side lines of each sector extending outward from the center of the disk, one side is a right-angled vertical edge with a depth of 4±0.5mm, and the other side is a beveled edge of 30±5° to the disk surface by the teeth grinding, and an oblique groove is formed after the two adjacent sectors are connected; the outer ring fine tooth area is between the inner ring coarse tooth area and the outer edge of the disk surface, and the fine teeth are evenly arranged at 30±2° to the center line of the disk. The fine teeth are grooves with a groove depth of 3±1mm and a groove width of 4±1mm.

[0025] In the above technical solution, the diameter of the lower grinding disc is 400-800mm, the thickness of the lower grinding disc is 30-80mm; the lower grinding disc is provided with a central through hole, lower grinding teeth, a guide ring groove and a discharge port; the diameter of the central through hole is 40-50mm, the width of the guide ring groove is 100±10mm, the lower grinding teeth are divided into an inner ring coarse tooth area and an outer ring fine tooth area, the inner ring coarse tooth area is divided into 8 sectors, from 8-15mm away from the inner edge of the central through hole to 3mm away from the outer edge of the disc surface At 5±5mm, each sector extends 90° outward from the inside, the coarse tooth height is 4±0.5mm, the vertical angle surface of the coarse tooth is 80~90° with the plane of the disk body, and the other angle surface is 5~10° with the plane of the disk body to form an angular tooth protrusion, and the coarse teeth are arranged at an oblique angle of 90±5° with the center line of the disk, forming a sharp coarse tooth area; each sector is evenly distributed with 2 grooves extending from the center of the disk, with a depth of 4±0.5mm, one groove side of the groove is a right-angled vertical edge, and the other is a right-angled vertical edge. The groove edge is a beveled edge with a 30±5° angle to the disk surface, formed by the teeth grinding, forming an outflow groove line; each sector has two edges extending outward from the center of the disk, one of which is a right-angled vertical edge with a depth of 4±0.5mm, and the other is a beveled edge with a 30±5° angle to the disk surface, and the two adjacent sectors form an oblique groove after docking; the outer ring fine tooth area is between the inner ring coarse tooth area and the outer edge of the disk surface, and the fine teeth are evenly arranged at 30±2° to the center line of the disk. The groove has a depth of 3±1 mm and a width of 4±1 mm. The center diameter of the lower grinding disc is within the range of 100 to 350 mm, and the entire disc gradually shrinks to 5 to 10 mm in a pot-bottom shape at a distance of 8 to 15 mm from the inner edge of the center through hole. A sleeve structure protrudes 1 to 5 mm from the disc surface at a distance of 8 to 15 mm from the center through hole to the outer periphery of the hole. When the disc surface is recessed, the disc core forms a sleeve structure protruding 6 to 15 mm from the tooth surface, and the sleeve thickness is 8 to 15 mm.

[0026] In the above technical solution, the fine teeth of the upper grinding disc and the lower grinding disc are ground into arc angles from the outer edge of the disc to the groove edges at the inner 1 / 3 to 1 / 2.

[0027] In the above technical solution, the outer side surface of the material guide ring groove is inclined inwardly by 10 to 15 degrees.

[0028] In the above technical solution, a scraper is also installed on the outer side of the upper grinding disc, which rotates synchronously with the upper grinding disc and is used to scrape the material in the guide ring groove into the discharge port.

[0029] In the above technical solution, the outer side of the upper grinding disc is provided with or without a blind hole type grinding rod mounting hole.

[0030] In the above technical solution, the upper grinding disc and the lower grinding disc are wrapped with a heat-insulating cover, which is divided into an upper cover body and a lower cover body. The upper cover body and the lower cover body are engaged with each other in a mother-and-child groove, completely covering the upper grinding disc and the lower grinding disc.

[0031] In the above technical solution, the upper cover body is a transparent acrylic outer cover with a thickness of 10 to 20 mm; the lower cover body is a transparent acrylic outer cover or a non-transparent outer cover, the inner wall of the lower cover body is adhered to and fixed to the outer wall of the lower grinding disc, and the upper cover body can be freely disassembled and assembled; a circular opening is opened in the center of the top surface of the upper cover body, and an eccentric funnel is placed in the circular opening, the lower end of the eccentric funnel is plugged into the top surface of the upper grinding disc, and the eccentric funnel rotates synchronously with the upper grinding disc; the upper opening of the eccentric funnel is hollowed out as a whole and converges to the lower opening of the funnel at an eccentric angle, and the lower opening of the funnel is inserted into the eccentric feeding port, and materials are fed into the eccentric funnel at will, and the materials automatically flow into the eccentric feeding port; the circular opening of the upper cover body is also covered with a cover that can be freely disassembled and assembled, which is used to cover the upper opening of the eccentric funnel, so that the thermal insulation cover is fully enclosed and heat-insulated, and can also prevent foreign objects and impurities from entering the grinding disc, thereby ensuring food hygiene;

[0032] When the lower cover is a non-transparent outer cover, a retaining ring is placed on the inner wall of the lower cover and on the edge of the lower grinding disc. The retaining ring is made of food-grade material and is used to isolate the lower cover to prevent the lower cover from contacting the material.

[0033] In the above technical solution, the refrigeration system also includes a refrigerator, a condenser exhaust pipe and a cooling fan. One end of the cooling exhaust pipe is connected to a capillary tube, the capillary tube is connected to the condenser exhaust pipe, and the other end of the cooling exhaust pipe is connected to the refrigerator; the cooling fan is placed on one side of the condenser exhaust pipe for air cooling the condenser exhaust pipe; a temperature sensor is provided at the cooling exhaust pipe for detecting the cooling temperature of the cooling exhaust pipe.

[0034] In the above technical solution, the drive system includes a frequency conversion controller and a motor. The frequency conversion controller is electrically connected to the motor to control the motor speed. The motor is connected to a reducer, and the reducer is connected to the drive shaft through a slot. A slot is provided at the top of the drive shaft, and the top of the drive shaft passes through the center through hole and is connected to the cooling ring through the slot.

[0035] In the above technical solution, sealing rings are also provided on the top and bottom surfaces of the driving shaft located on the lower grinding disc.

[0036] In the above technical solution, the refrigeration stone mill also includes a rack box, the lower grinding wheel is placed on the rack box, the drive system and the refrigeration system are located inside the rack box, and the interior of the rack box is designed as an upper and lower two-layer space. The upper space of the rack box is used to accommodate the motor and the reducer, and the reducer is fixed to the upper layer through the base I, and the middle part of the base I is hollow; the lower space of the rack box is used to accommodate the refrigerator, the condenser exhaust pipe and the cooling fan, and the refrigerator, the condenser exhaust pipe and the cooling fan are fixed to the lower layer through the base II.

[0037] In the above technical solution, the frequency conversion controller is placed on the upper layer inside the rack box, or placed outside the rack box.

[0038] In the above technical solution, the rack box is provided with a box panel, and the box panel is provided with an exhaust port.

[0039] In the above technical solution, a lifting assembly is also arranged in the lower space of the rack box; the lifting assembly includes a lifting controller, a lifting motor and a vertical screw, the lifting controller is connected to and controls the lifting motor, the lifting motor is connected to a coupling sleeve, the coupling sleeve is plugged with a main conical wheel, the vertical screw is threaded into a secondary conical wheel, and the main conical wheel is engaged with the secondary conical wheel; the lifting motor drives the secondary conical wheel to rotate by driving the main conical wheel, thereby moving the vertical screw up and down; the top end of the vertical screw is against the bottom end of the drive shaft.

[0040] In the above technical solution, the lifting motor and the vertical screw are placed in the lower layer inside the rack box, and the lifting motor is installed on a machine stool with a height; the lifting controller is placed in the lower layer inside the rack box, or outside the rack box.

[0041] In the above technical solution, a numerical control display is also installed on the rack box, and the numerical control display is electrically connected to the temperature sensor and the drive system for displaying the refrigeration temperature and the grinding disc speed.

[0042] The method for using the above-mentioned refrigeration stone mill for processing iced food and beverages comprises:

[0043] Refrigeration stone mill operation: The refrigeration system is running to make the center of the grinding disc reach a refrigeration temperature of 0 to -15℃, the upper grinding disc starts slowly, and gradually increases its speed from a static state to 30 to 50r / min in 8 to 15 seconds, and the material is added for grinding;

[0044] Refrigeration stone mill standby: stop the upper grinding disc from rotating, and the refrigeration system continues to run, maintaining a refrigerated temperature of 0 to -15°C to inhibit bacterial growth.

[0045] The refrigeration stone mill for processing ice drinks and beverages is used for grinding and producing ice drinks and beverages in the form of snow flakes, slush, ice particles, smoothies, ice foam or soft ice cream.

[0046] Compared with the prior art, the refrigeration stone mill for processing iced food and beverages and the method of using the same have the following beneficial effects:

[0047] 1. The present invention designs a refrigerated stone mill for preparing soft ice cream and other ice drinks. This technology currently fills a market gap in the use of millstones to grind ice cream. A cooling pipe assembly structure and a grinding tooth structure, as well as a heat-insulating component, are designed for the stone mill for grinding ice. In addition, the grinding process parameters are designed based on the production conditions of soft ice cream and other ice drinks, so that the stone mill can grind out ice drinks with different tissue forms, including snow flakes, slush, ice particles, smoothies, ice foam, and soft ice cream. In particular, for soft ice cream products, the soft ice cream can be ground into soft ice cream with a soft and delicate texture, melts in the mouth, has the best flavor release, good sensory perception, and consistent quality, and has the cultural and tourism value of the stone mill cultural heritage.

[0048] Second, the refrigerated mill of the present invention is designed with multiple combinations of cooling pipes and the lower grinding disc. In order to quickly cool the grinding tooth layer, the millstone is made of stone, which has poor heat conduction speed and effect. Therefore, a special cooling mechanism needs to be designed to achieve a better cooling effect and ensure that the temperature inside the grinding disc is always maintained at a low temperature. Among them, the bottom surface of the lower grinding disc is indirectly attached to the cooling pipe, using cooling copper bars and cooling copper plates for rapid cooling; the bottom surface of the lower grinding disc is directly embedded with the cooling pipe, and the bottom of the grinding disc is grooved to reduce the thickness of the grinding disc for rapid cooling; the core of the lower grinding disc is embedded with cooling pipes, directly replacing the core of the lower grinding disc with a cooling copper plate, which can also reduce the thickness of the lower grinding tooth plate for faster cooling; in addition, a double-layer coil is designed to improve the cooling effect. The cooling design can achieve rapid cooling of the grinding tooth layer of the grinding disc to reach the required cooling temperature, ensuring that the ground material does not experience significant temperature changes and does not melt, and ensuring the temperature and taste, so that the soft ice cream product temperature reaches -5°C and the taste is optimal.

[0049] 3. The present invention designs an empty core of the lower grinding disc inlaid with a cooling pipe through a "convex" type cooling copper plate. After the lower grinding tooth piece is plugged into the cooling copper plate, the lower grinding tooth piece will not rotate, thereby ensuring the grinding effect.

[0050] Fourth, the present invention's stone mill, based on the thermal conductivity of the stone and the thickness of the insulating baseplate, achieves an ideal cooling effect and temperature differential between the inside and outside. This allows the grinding disc core temperature to maintain a temperature difference of approximately 5°C from the outer edge of the grinding disc when the grinding disc core is around 0°C during grinding. In actual measurements, the inner grinding disc core maintains a temperature of -5°C while the outer edge approaches 0°C. Therefore, the combination of the lower grinding disc and the cooling duct ensures that the grinding disc can easily absorb large particles of material. The incoming material is sheared at the center, preventing it from quickly melting and flowing outward, thus ensuring effective material pulverization.

[0051] 5. The coarse grinding teeth of the refrigerated stone mill of the present invention are designed as a shearing type, which fully imitates the high-speed shearing principle in the milk processing process, breaks and fuses the various components in the raw materials, effectively combines the molecular clusters of water, milk, oil, sugar and other materials, forms a reasonable structure, improves the taste, and has no iron smell. The main raw materials and ingredients involved in the refrigerated stone mill are ice cubes, milk cubes, fresh fruits, frozen fruits, dried fruits, grains, cheese, etc. According to the characteristics of the materials, the coarse tooth structure and parameters of the grinding disc are designed. The shape, sharpness and depth of the coarse teeth, the combination of the upper and lower teeth, and the shear force generated by the gravity of the upper grinding disc are used to synchronously and effectively shear and break all materials. Among them, the structural design of the coarse teeth can bite and crush the ice cubes well, which solves the problem that the ice cubes are hard and slippery on the surface and are not easy to grind. The ice cubes are grinded synchronously with other materials, and the mixing uniformity is good. The problem of fruits, dried fruits and grains being discharged first and ice being discharged later will not occur.

[0052] 6. The fine grinding teeth of the refrigerated stone mill of the present invention are grinding teeth, which grind the materials cut from the coarse teeth, grind and fuse all the material components, improve the fusion degree between materials of different properties, and grind the materials into fine and smooth texture, reduce the surface edges and corners of ice shavings and other hard auxiliary materials, improve the shape of particles, and enhance the dense touch, thus solving the problem of simple mechanical shearing resulting in sharp edges and corners of particles and simple mixing resulting in poor taste.

[0053] 7. The fine grinding teeth of the present invention's refrigerated stone mill are further designed with a partially angled design. That is, the fine teeth of the upper and lower grinding discs have a ground angled groove edge from the outer edge to the inner 1 / 3 to 1 / 2 of the disc. This partially angled grinding of the outer edges of the fine grinding teeth further rounds the edges of tiny ice crystals, further improving the particle shape and achieving a more dense and smooth feel, a smooth and dense ice crystal texture not achieved by conventional stone mill teeth.

[0054] 8. The grinding teeth of the refrigerated mill of the present invention are zoned. Flow grooves are designed between and within each sector of the lower grinding teeth. One side of the groove is linear, and the other side is zigzag. This acts as a flow barrier, slowing the flow of material and preventing smooth, larger ice cubes from flowing out along the groove or entering the fine grinding teeth and clogging the grooves. Because the mill is in a refrigerated state, if the size and temperature of the ice cubes are not properly adjusted, large ice cubes can easily freeze inside the grinding teeth and become clogged at the interface between the coarse and fine teeth. The present invention's design of the upper and lower coarse grinding teeth, the sectorization of the grinding teeth, and the angle and shape of the flow grooves effectively crush large ice cubes before they flow into the fine teeth interface, preventing clogging.

[0055] IX. The grinding wheel size and the distribution of the coarse and fine grinding teeth of the refrigerated stone mill of the present invention are designed based on the fineness of soft-serve ice cream and other crystalline products. If the grinding wheel is too small, the distribution of the coarse and fine grinding teeth is narrow, and the soft-serve ice cream cannot be ground to a smooth and soft consistency. If the grinding wheel is too large, and the distribution of the coarse and fine grinding teeth is wide, the slush will remain inside the grinding wheel for a long time, making it difficult to adjust the cooling temperature of the grinding wheel and reducing the temperature control range. If the temperature is low and the residence time is long, it will be more likely to freeze and clog, while if the temperature is high and the residence time is long, it will easily melt. Therefore, the grinding wheel size and the distribution of the coarse and fine grinding teeth are also important technical factors in improving the grinding quality of soft-serve ice cream and other crystalline products.

[0056] 10. The center of the grinding disc of the refrigerated stone mill of the present invention is designed to be within a certain range, and the whole gradually shrinks towards the center like a pot bottom to 5-10 mm; after stopping the mill, the central concave surface can retain a part of the residual material, which is frozen in the concave surface to form a layer of ice surface, ensuring that the grinding teeth do not breed microorganisms; and after starting the mill, new material is put in for extrusion, and the residual material is ground out and disposed of or added to the food as the mill is ground. It does not affect food safety.

[0057] 11. When the surface of the lower grinding disc is not concave, the central through hole and the outer periphery of the hole are 8 to 15 mm away from the disc surface, forming a sleeve structure that protrudes 1 to 5 mm from the disc surface. When the disc surface of the lower grinding disc is concave by 5 to 10 mm like a pot bottom, the disc core forms a sleeve structure that protrudes 6 to 15 mm from the tooth surface. The protruding height can effectively prevent the material from flowing out of the central through hole and flowing down along the drive shaft. The thickness of the sleeve of 8 to 15 mm can well protect the drive shaft and limit the upper and lower grinding discs from deflection.

[0058] 12. The lower grinding disc absorbs cold energy due to contact with the cold source. Therefore, the embedded design of the cooling pipe can also quickly transfer the cold energy to the center of the grinding disc, achieving the exchange of material energy. Since the thermal conductivity of the stone is 1-2, it also has a protective effect on the cold source. The center is frozen and gradually diffuses to the outside, making the external temperature slightly higher, which reduces the loss of the cold source and ensures the internal freezing effect. For the product temperature design of -5 to 0℃, the taste and temperature of the ground product are the best state for human taste experience of soft ice cream and the best state for instant effect.

[0059] 13. The external acrylic insulation kit of the millstone completely encloses the millstone, providing insulation during operation. It isolates the internal working components (upper and lower millstones) from the outside air, preventing the escape of cold energy. This significantly reduces the loss of cooling energy from the millstone, ensuring the overall insulation performance of the millstone and increasing energy efficiency. Furthermore, it provides a hygienic protection effect, isolating the millstone kit from the air and effectively preventing the infiltration of microorganisms and dust, thus meeting the hygienic requirements of the equipment during operation.

[0060] 14. The lower cover of the thermal insulation cover is designed to be made of transparent or non-transparent material. Among them, the non-transparent lower cover has better visual aesthetics, but is not easy to contact the material. Therefore, a retaining ring is placed on the inner wall of the lower cover and above the edge of the lower grinding disc. The retaining ring is made of food-grade material and is used to isolate the lower cover to prevent the lower cover from contacting the material and ensure food safety.

[0061] 15. The eccentric feeding port of the upper grinding disc will rotate with the grinding disc. It is not easy to align the feeding port to feed materials when the grinding disc rotates at high speed. The present invention designs an eccentric funnel that rotates with the grinding disc, so that the grinding disc can feed materials freely and conveniently during operation, solving the bottleneck of difficult feeding caused by the eccentric feeding port of the upper grinding disc, making the industrialization of refrigeration stone mill production more reasonable.

[0062] 16. The cooling coefficient of copper is 401. A cooling copper bar is designed to be embedded inside the grinding disc to quickly transfer the cold source to the grinding disc. A copper plate is embedded between the cooling pipe and the bottom of the grinding disc where the cooling copper bar is embedded, so that the cold source is evenly and quickly introduced from the cooling pipe to the cooling bar. Silicone grease (cooling coefficient 8) is filled between the cooling copper bar, copper plate, and cooling pipe to enhance the cooling effect. This design ensures that the cooling pipe effectively, quickly, and evenly cools the grinding disc when the refrigerant evaporates and absorbs heat, ensuring the transfer of the cold source and bringing the grinding disc to an effective temperature. The cooling capacity can be effectively adjusted for different products. The cooling copper bar is concentrated in the center of the grinding disc, allowing the cold energy to be quickly transferred to the central area. Combined with the thinness of the center of the grinding disc, the cold energy is concentrated in the center of the grinding disc, achieving the goal of a lower temperature in the center of the grinding disc.

[0063] 17. The center of the upper grinding disc is inlaid with a cooling ring made of carbon steel or copper. The drive shaft engages the cooling ring to drive the upper grinding disc in rotation. The 304 stainless steel drive shaft and the cooling ring quickly transfer the cold energy to the upper grinding disc. The cooling ring transfers the cold energy to the center of the upper grinding disc and then to the side walls of the feed port, thereby maintaining the low temperature at the feed port. This ensures that ice cubes do not melt at the feed port and can smoothly enter the grinding teeth, and also ensures that bacteria do not grow at the feed port. In addition, the cold energy introduced by the cooling ring to the upper grinding disc also has the effect of freezing the material at the center of the grinding disc, further reducing the temperature of the grinding disc. The thickness of the upper grinding disc acts as a pressure to crush the material. At the same time, its low thermal conductivity also effectively protects the cold energy and reduces outflow loss.

[0064] 18. The present invention is designed to increase the density of cooling pipes at the outer wall of the lower grinding disc and the central transmission shaft to supply the cooling capacity required for the upper grinding disc to be transferred from the central shaft. At the same time, the center of the double grinding discs is concentratedly cooled by the dense cooling strips in the center and the concave and thinned design of the lower grinding disc center, achieving a lower temperature cooling effect in the center.

[0065] 19. The refrigeration mill of the present invention is designed with the side surface of the guide ring groove tilted inward by 10 to 15 degrees to guide the flow inward and reduce material residue.

[0066] 20. The refrigerated stone mill of the present invention is designed with a scraper on the side of the upper grinding disc. As the upper grinding disc rotates, it is used to scrape the material into the discharge port, eliminating the need for manual scraping.

[0067] 21. The refrigerated stone mill of the present invention is designed with sealing rings on the top and bottom surfaces of the lower grinding disc on the driving shaft rod, i.e., sealing sleeves made of food-grade material, to ensure the sealing performance of the driving shaft during rotation.

[0068] 22. A frequency converter has been added to the drive motor to control the upper grinding disc's rotation speed and the gradual acceleration function during the grinding disc start-up. The grinding speed is adjusted for each different product state, adjusting the product's structural state advantage. The gradual start-up ensures the stability of the equipment when processing small quantities of single batches.

[0069] 23. The cooling mill of the present invention separates the lower grinding plate from the lower grinding disc, and directly embeds the cooling copper plate and cooling pipes in the hollowed-out disc core. Therefore, there is no need to groove the bottom of the millstone, which simplifies the manufacturing process and saves the cost of grooves. The cooling speed of the grinding tooth surface is faster, improving the cooling efficiency of the millstone. In addition, after the grinding teeth of the lower grinding plate are worn out due to long-term grinding, the lower grinding plate component can be directly replaced at any time without replacing the entire lower grinding disc, which greatly reduces the replacement cost of consumable parts. In addition, the separated lower grinding plate is designed with a circular, elliptical, rectangular, triangular, polygonal, or crescent-shaped slot, which is inserted into the pin of the "convex" cooling copper plate. This not only ensures that the lower grinding plate does not rotate relative to each other, but also inserts the cooling material pin into the slot, which further improves the cooling effect of the middle and outer parts of the grinding plate. In particular, the crescent-shaped slot can increase the contact area between the pin and the slot, which can significantly improve the cooling effect of the middle and outer parts of the grinding plate.

[0070] 24. The refrigerated stone mill of the present invention is designed with an upper grinding disc capable of lifting and lowering motion. A lifting controller controls the rotation of the lifting motor, which transmits power to the vertical lead screw via a bevel gear, causing it to move up and down. During the upward motion, the top end of the vertical lead screw contacts the bottom end of the drive shaft, causing the drive shaft to move upward, which in turn causes the upper grinding disc to move upward, opening the upper and lower grinding gear layers for easy cleaning. During the downward motion, the vertical lead screw moves downward, and the drive shaft and upper grinding disc also move downward under gravity, closing the upper and lower grinding gear layers. The upper grinding disc lifting design facilitates the cleaning of the grinding teeth and the inspection and tracking of tooth wear at any time, ensuring grinding quality. If a blockage occurs, it can be promptly cleared, and when changing materials, it facilitates the cleaning of internal material residues.

[0071] 25. The refrigeration stone mill of the present invention is also designed with a digital control display, which allows intuitive human-computer interaction and facilitates monitoring of operating data.

[0072] In summary, the refrigerated stone mill of the present invention can crush the material while minimizing the damage to the internal structure of the material, and can crush the material and fully combine it with ice and milk. The inclination, height and angle of the teeth are designed according to the characteristics of fruits, ice cubes, milk cubes, dried fruits, grains, etc. to achieve the best destruction and fusion state before outflow, thereby improving the taste of the finished product. After adjusting the refrigeration depth, the processed material reaches about -5°C, becoming soft ice cream. Ice cream tastes best at -5°C, and is smooth and soft. The temperature and taste at this time are most suitable for the human body's taste experience of soft ice cream. It is a new type of equipment for processing instant ice products. It is suitable for use in stores and is produced at the sales site. It can obtain excellent instant deliciousness without adding any harmful additives. The production capacity reaches about 60L of finished products per hour. The product quality can be fully standardized and the microbial indicators are controllable.

[0073] Traditional stone mills generally grind at room temperature. When the ambient temperature changes or the mill is shut down, the material itself is prone to microbial growth, affecting product quality. The present invention's refrigerated stone mill, combined with modern refrigeration technology, can completely solve many technical problems of ice grinding and maintain the quality of the material from microbial contamination. It inherits the ancient production methods of ice cream and ice drinks, explores the ancient culture of ice cream and ice drinks, combines modern electromechanical digitalization, and meets consumers' pursuit of beauty and health. The ancient stone mill is equipped with a refrigeration device to ensure the stable quality and cleanliness of soft ice cream and other ice drinks at low temperatures, promoting the display of ancient customs in scenic areas.

[0074] The refrigerated stone mill of the present invention can also be used to process ready-to-eat iced drinks and milk tea. By improving the inlet of the refrigerated stone mill, it can automatically feed bulk materials with a diameter of 50 mm into the millstone. Because the materials are not whipped at high speed and can be ground and integrated, the resulting product maintains a good texture and nutritional content. This device can be used in factories and stores for intermittent or continuous food processing, demonstrating its excellent practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] FIG1 is an overall assembly diagram of a refrigeration stone mill for processing ice drinks and beverages according to Embodiments 1 and 2 of the present invention;

[0076] FIG2 is an assembly diagram of the bottom of the lower grinding plate of a refrigerated stone mill for processing iced beverages according to Example 1 of the present invention;

[0077] FIG3 is a bottom schematic diagram of an upper grinding disc of a refrigerated stone mill for processing iced beverages according to an embodiment of the present invention;

[0078] FIG4 is a perspective view of an upper grinding disc of a refrigerated stone mill for processing iced beverages according to an embodiment of the present invention;

[0079] FIG5 is a side partial cross-sectional view of an upper grinding disc of a refrigerated stone mill for processing iced beverages according to an embodiment of the present invention;

[0080] Figure 6 is an enlarged view of point A in Figure 5;

[0081] FIG7 is a schematic diagram of the top surface of the lower grinding disc of a refrigerated stone mill for processing iced beverages according to an embodiment of the present invention;

[0082] FIG8 is a perspective view of the lower grinding disc of a refrigerated stone mill for processing iced beverages according to an embodiment of the present invention;

[0083] FIG9 is a partial cross-sectional side view of a lower grinding disc of a refrigeration stone mill for processing iced beverages according to an embodiment of the present invention;

[0084] Figure 10 is an enlarged view of point B in Figure 9;

[0085] 11 is an assembly diagram of a heat preservation cover of a refrigeration stone mill for processing ice drinks according to an embodiment of the present invention;

[0086] FIG12 is a partial cross-sectional view of the assembly of a heat preservation cover of a refrigeration stone mill for processing iced beverages according to an embodiment of the present invention;

[0087] FIG13 is a schematic diagram of a heat preservation cover of a refrigerated stone mill for processing iced beverages after being assembled on a grinding disc according to an embodiment of the present invention;

[0088] FIG14 is a partial cross-sectional view of a heat preservation cover of a refrigeration stone mill for processing iced beverages after being assembled on a grinding disc according to an embodiment of the present invention;

[0089] FIG15 is an exploded view of the assembly of a drive system of a refrigeration stone mill for processing iced beverages according to an embodiment of the present invention;

[0090] FIG16 is an assembly diagram of a refrigeration system of a refrigeration stone mill for processing ice drinks according to an embodiment of the present invention;

[0091] FIG17 is an exploded view of the lifting assembly of a refrigeration stone mill for processing iced beverages according to an embodiment of the present invention;

[0092] FIG18 is an exploded view of the overall assembly of a refrigeration stone mill for processing ice drinks and beverages according to Embodiments 1 and 2 of the present invention;

[0093] FIG19 is an assembly diagram of the bottom of the lower grinding plate of a refrigerated stone mill for processing iced beverages according to Example 2 of the present invention;

[0094] FIG20 is an assembly diagram of the bottom of the lower grinding plate of a refrigerated stone mill for processing iced beverages according to Example 3 of the present invention;

[0095] FIG21 is an assembly diagram of the bottom of the lower grinding plate of a refrigerated stone mill for processing iced beverages according to Example 4 of the present invention;

[0096] FIG22 is an assembly diagram of the bottom of the lower grinding plate of a refrigerated stone mill for processing iced beverages according to Example 5 of the present invention;

[0097] FIG23 is an assembly diagram of the bottom of the lower grinding plate of a refrigerated stone mill for processing iced beverages according to Example 6 of the present invention;

[0098] FIG24 is an assembly diagram of the bottom of the lower grinding plate of a refrigerated stone mill for processing iced beverages according to Example 7 of the present invention;

[0099] FIG25 is an assembly diagram of the bottom of the lower grinding plate of a refrigerated stone mill for processing iced beverages according to Example 8 of the present invention;

[0100] FIG26 is an assembly diagram of the bottom of the lower grinding plate of a refrigerated stone mill for processing iced beverages according to Example 9 of the present invention;

[0101] FIG27 is an exploded view of the lower grinding disc and core components of a refrigeration stone mill for processing iced beverages in accordance with Embodiment 10 of the present invention;

[0102] FIG28 is a top perspective view of the lower grinding disc assembly of a refrigerated stone mill for processing iced beverages in accordance with Embodiment 10 of the present invention;

[0103] FIG29 is a bottom perspective view of the lower grinding disc assembly of a refrigerated stone mill for processing iced beverages according to embodiment 10 of the present invention;

[0104] FIG30 is a partial cross-sectional view of the assembled lower grinding disc of a refrigeration stone mill for processing iced beverages in accordance with Embodiment 10 of the present invention;

[0105] FIG31 is an exploded view of the assembly of the lower grinding plate and the cover assembly of a refrigerated stone mill for processing iced beverages according to Example 10 of the present invention;

[0106] FIG32 is a schematic top view of a fine grinding tooth groove of a refrigeration stone mill for processing ice drinks and beverages according to Example 11 of the present invention;

[0107] FIG33 is a schematic side view of a fine grinding tooth groove of a refrigeration stone mill for processing ice drinks and beverages according to Example 11 of the present invention;

[0108] In the figure: 1-upper grinding disc, 1.1-center slot, 1.2-eccentric feeding port, 1.21-feeding inclined port, 1.3-upper grinding gear, 1.4-cooling ring, 1.5-funnel slot; 2-lower grinding disc, 2.1-center through hole, 2.2-lower grinding gear, 2.3-feeding ring groove, 2.4-discharging port; 3-drive system, 3.1-frequency controller, 3.2-motor, 3.3-reducer, 3.4-slot part, 3.5-drive shaft, 3.6-slot port, 3.7-base I; 4-refrigeration system, 4.1-refrigeration machine, 4.2-condenser exhaust pipe, 4.3-cooling fan, 4.4-cooling exhaust pipe, 4.5-cooling copper plate, 4.51-convex ”-shaped cooling copper plate, 4.52-bayonet, 4.6-cooling copper bar, 4.7-machine base II; 5.1-insulation bottom plate, 5.2-insulation cover, 5.21-upper cover body, 5.22-lower cover body, 5.221-enclosing ring, 5.23-eccentric funnel, 5.24-cover; 6-rack box; 7-lifting assembly, 7.1-lifting controller, 7.2-lifting motor, 7.3-coupling sleeve, 7.4-main conical wheel, 7.5-secondary conical wheel, 7.6-vertical screw, 7.7-machine stool; 8-temperature sensor; 9-NC display; 21-cooling groove; 22-groove; 23-pipe groove; 24-grinding plate, 24.1-card slot; 25-disk body. DETAILED DESCRIPTION

[0109] The present invention will be further described below with reference to specific implementation cases and Figures 1-33, but the present invention is not limited to these embodiments.

[0110] Example 1

[0111] A refrigerated stone mill for processing ice drinks and beverages, as shown in Figure 1-18, includes an upper grinding disc 1, a lower grinding disc 2, a drive system 3 and a refrigeration system 4. The upper grinding disc 1 is fitted with the lower grinding disc 2, and the disc body is made of green honey stone. The drive system 3 and the refrigeration system 4 are arranged below the lower grinding disc 2, and the drive system 3 is used to drive the upper grinding disc 1 to rotate. The bottom surface of the lower grinding disc 2 is indirectly attached with a cooling exhaust pipe 4.4 of the refrigeration system 4. The refrigeration system 4 is used to cool the lower grinding disc 2 and the upper grinding disc 1, and can also cool the ground material.

[0112] Among them, the cooling pipe 4.4 is a single-layer coil, and the cooling pipe is assembled as follows: the bottom surface of the lower grinding disc 2 is cut with a circular cooling groove 21, which is a sieve-shaped groove with a horizontal and vertical interval of 30mm, a groove width of 5mm, and a depth of 20mm; a 5mm wide and 20mm thick copper cooling copper bar 4.6 is tightly embedded in the cooling groove 21. After the tight fit, the gap is filled with thermal grease. After the cooling copper bar 4.6 is embedded, it is flush with the bottom surface of the lower grinding disc 2; after the cooling copper bar 4.6 is embedded, a 1.5mm thick round copper is attached to the bottom surface of the lower grinding disc 2. A cooling copper plate 4.5 is made of copper, the diameter of which is 100 mm smaller than the diameter of the grinding disc. A cooling pipe 4.4 made of 8 mm in diameter is attached to the bottom of the cooling copper plate 4.5. The cooling pipe 4.4 is arranged in a circular spiral, and the pipe seams are filled with thermal grease. The bottom of the cooling pipe 4.4 is sealed with insulating aluminum foil, and the bottom of the insulating aluminum foil is insulated with polyurethane foam. The polyurethane foaming forms an insulating base plate 5.1. The insulating base plate 5.1 formed after the polyurethane foaming seals all the bottom components of the lower grinding disc 2 to form an integral whole. The insulating base plate 5.1 is 30 mm thick.

[0113] The upper grinding disc 1 is designed as follows: the disc diameter of the upper grinding disc 1 is 500mm and the thickness is 130mm; the upper grinding disc 1 is provided with a blind hole type center slot 1.1, a through hole type eccentric feeding port 1.2, an upper grinding tooth 1.3 and a funnel slot 1.5; the diameter of the center slot 1.1 is 60mm, and a "θ-shaped" copper material cooling ring 1.4 is embedded in the center slot 1.1. The cooling ring 1.4 is 70mm high and has an outer diameter of 60mm, inner diameter is 35mm, center clamp width is 10mm; eccentric feeding port 1.2 has a diameter of 100mm, and a feeding bevel 1.21 is set downward at a height of 35mm from the bottom of the upper grinding disc 1, extending to the grinding plane, and the feeding bevel 1.21 is at an angle of 30° with the grinding plane, and the feeding bevel 1.21 is a rounded angle to guide the flow to the disc center; the upper grinding teeth 1.3 are divided into an inner ring coarse tooth area and an outer ring fine tooth area, the inner ring The coarse tooth area is divided into 8 sectors, from 5mm from the inner edge of the center slot 1.1 to 35mm from the outer edge of the disk surface. Each sector extends 90° from the inside to the outside. The coarse tooth height is 4mm. The vertical angle surface is 80-90° with the disk body plane and the other angle surface is 5-10° with the disk body plane to form an angular tooth protrusion. The tooth root width is 15-18mm. The coarse teeth are arranged at an angle of 90±5° with the center line of the disk, forming a sharp Coarse tooth area; each sector has two side lines extending outward from the center of the disk, one side is a right-angled vertical edge with a depth of 4mm, and the other side is a beveled edge with a grinding angle of 30±5° to the disk surface. When the two adjacent sectors are connected, an oblique groove is formed; between the inner ring coarse tooth area and the outer edge of the disk surface is the outer ring fine tooth area, and the fine teeth are evenly arranged at 30±2° to the center line of the disk. The fine teeth are grooves with a depth of 3mm and a width of 4mm.

[0114] Among them, the design of the lower grinding disc 2 is as follows: the diameter of the lower grinding disc 2 is 700mm, the thickness of the lower grinding disc 2 is 70mm; the lower grinding disc 2 is provided with a central through hole 2.1, a lower grinding tooth 2.2, a guide ring groove 2.3 and a discharge port 2.4; the diameter of the central through hole 2.1 is 47mm, the outer diameter of the lower grinding tooth 2.2 is 500mm, the bottom width of the guide ring groove 2.3 is 100mm, and the outer edge of the guide ring groove 2.3 is inclined inward by 10°; the lower grinding tooth 2.2 is divided into an inner ring coarse tooth area and an outer ring fine tooth area. The inner ring coarse tooth area is divided into 8 sectors, from 11mm at the inner edge of the center through hole 2.1 to 35mm at the outer edge of the disk surface, each sector extends 90° outward from the inside, the coarse tooth height is 4mm, the vertical angle surface is 80-90° with the disk body plane and the other angle surface is 5-10° with the disk body plane to form an angular tooth protrusion, the coarse teeth are arranged at an oblique angle of 90±5° with the center line of the disk, and are arranged into a sharp coarse tooth area; each sector is evenly distributed with 2 grooves extending outward from the center, and the groove depth is 4 mm, one groove side is a right-angled vertical edge, and the other groove side is a beveled edge with a 30° angle to the disk surface, forming a flow groove line; each sector has two sides extending outward from the center, one is a right-angled vertical edge with a depth of 4mm, and the other is a beveled edge with a 30±5° angle to the disk surface, and the two adjacent sectors form an oblique groove after docking; the outer ring fine tooth area is between the inner ring coarse tooth area and the outer edge of the disk surface, and the fine teeth are uniformly spaced at 30±2° with the center line of the disk. Arrangement, the fine teeth are grooves with a groove depth of 3mm and a groove width of 4mm; within the center diameter of the lower grinding disc 2 of 300mm, the whole gradually shrinks to 10mm in a pot-bottom shape 11mm away from the inner edge of the center through hole 2.1; from the center through hole 2.1 to the outer edge of the hole 11mm is a sleeve structure protruding 2mm from the disc surface. When the disc surface is recessed by 10mm, the disc core forms a sleeve structure protruding 12mm from the tooth surface. The sleeve thickness is 11mm and the sleeve outer diameter is 58mm.

[0115] In addition, a blind hole type grinding rod mounting hole is provided on the outer side of the upper grinding disc 1, and a grinding rod can be mounted thereon.

[0116] Among them, the refrigeration stone mill is also provided with a heat preservation cover 5.2, as follows: the upper grinding disc 1 and the lower grinding disc 2 are wrapped with a heat preservation cover 5.2, and the heat preservation cover is divided into an upper cover body 5.21 and a lower cover body 5.22. The upper cover body 5.21 and the lower cover body 5.22 are interlocked with each other in a mother-and-child groove, completely covering the upper grinding disc 1 and the lower grinding disc 2 in a closed manner. The upper cover body 5.21 and the lower cover body 5.22 are both transparent food-grade acrylic covers with a thickness of 10mm; the upper cover body 5.21 is 220mm high, and the lower cover body 5.22 is 160mm high; the inner wall of the lower cover body 5.22 is attached and fixed to the outer wall of the lower grinding disc 2, and the upper cover body 5.21 can be freely disassembled and assembled; a circular opening is opened in the center of the top surface of the upper cover body 5.21, and an eccentric funnel 5.23 is placed in the circular opening, and the lower end of the eccentric funnel 5.23 is plugged into the upper The funnel slot 1.5 on the top surface of the grinding disc 1 has a circular opening with a matching inner diameter of 300 mm. The eccentric funnel 5.23 rotates synchronously with the upper grinding disc 1. The upper opening of the eccentric funnel 5.23 is hollowed out and converges at an eccentric angle to the lower opening, which is inserted into the eccentric feeding port 1.2. Materials can be freely added to the eccentric funnel 5.23, and the materials automatically flow into the eccentric feeding port 1.2 and into the grinding disc. The circular opening of the upper cover 5.21 is also covered with a cover 5.24 that can be freely disassembled and assembled. This covers the upper opening of the eccentric funnel 5.23, forming a fully enclosed space, improving thermal insulation, preventing bacterial growth, and preventing the ingress of foreign matter, ensuring food hygiene.

[0117] The refrigeration system 4 is designed as follows: the refrigeration system 4 also includes a refrigerator 4.1, a condenser tube 4.2 and a cooling fan 4.3. One end of the cooling tube 4.4 is connected to a capillary tube, which is connected to the condenser tube 4.2. The other end of the cooling tube 4.4 is connected to the refrigerator 4.1. The cooling fan 4.3 is placed on one side of the condenser tube 4.2 for cooling the condenser tube 4.2. A temperature sensor 8 is also provided on the cooling tube 4.4 for detecting the cooling temperature of the cooling tube 4.4.

[0118] The design of drive system 3 is as follows: drive system 3 includes a frequency converter 3.1 and a motor 3.2. Frequency converter 3.1 is electrically connected to motor 3.2 to control its speed. Motor 3.2 is connected to a reducer 3.3, which is connected to a drive shaft 3.5 via a slot 3.4. The top of drive shaft 3.5 has a slot 3.6, which passes through the center hole 2.1 and connects to the cooling ring 1.4 through the slot 3.6. The rod of drive shaft 3.5 is also equipped with sealing rings on the top and bottom surfaces of the lower grinding wheel 2 to ensure a tight seal during operation.

[0119] Among them, the refrigeration stone mill is also provided with a rack box 6, and the rack box space is arranged as follows: the lower grinding wheel 2 is placed on the rack box 6, the drive system 3 and the refrigeration system 4 are located inside the rack box 6, and the interior of the rack box 6 is designed as an upper and lower two-layer space. The upper space is used to accommodate the motor 3.2 and the reducer 3.3, and the reducer 3.3 is fixed to the upper layer through the base I3.7, and the middle part of the base I3.7 is hollow; the lower space is used to accommodate the refrigerator 4.1, the condenser exhaust pipe 4.2 and the cooling fan 4.3, and the refrigerator 4.1, the condenser exhaust pipe 4.2 and the cooling fan 4.3 are fixed to the lower layer through the base II4.7.

[0120] The frequency conversion controller 3.1 of the refrigeration mill in this embodiment is placed in the upper layer of the rack box 6. The rack box 6 is provided with a box panel (box panel omitted, not shown), and the box panel is provided with an exhaust port.

[0121] The lower space of the frame box 6 of the refrigeration stone mill in this embodiment is also equipped with a lifting assembly 7; the lifting assembly 7 includes a lifting controller 7.1, a lifting motor 7.2 and a vertical screw 7.6. The lifting controller 7.1 is connected to and controls the lifting motor 7.2. The lifting motor 7.2 is connected to a coupling sleeve 7.3. The coupling sleeve 7.3 is plugged with a main conical wheel 7.4. The vertical screw 7.6 is threaded into a secondary conical wheel 7.5, and the main conical wheel 7.4 is engaged with the secondary conical wheel 7.5; the lifting motor 7.2 drives the secondary conical wheel 7.5 to rotate by driving the main conical wheel 7.4, thereby causing the vertical screw 7.6 to move up and down; the top end of the vertical screw 7.6 is against the bottom end of the drive shaft 3.5.

[0122] The lifting motor 7.2 and the vertical lead screw 7.6 are placed in the lower layer of the rack box 6. The lifting motor 7.2 is installed on a machine stool 7.7 with a height; the lifting controller 7.1 is placed in the lower layer of the rack box 6.

[0123] Example 2

[0124] A refrigerated stone mill for processing ice drinks and beverages, as shown in Figures 1, 18, 3-17 and 19, includes an upper grinding disc 1, a lower grinding disc 2, a drive system 3 and a refrigeration system 4. The upper grinding disc 1 is fitted with the lower grinding disc 2, and the drive system 3 and the refrigeration system 4 are provided below the lower grinding disc 2. The drive system 3 is used to drive the upper grinding disc 1 to rotate; the bottom surface of the lower grinding disc 2 is indirectly attached with a cooling exhaust pipe 4.4 of the refrigeration system 4, and the refrigeration system 4 is used to cool the lower grinding disc 2 and the upper grinding disc 1, and can also cool the ground material.

[0125] Among them, the cooling pipe 4.4 is a single-layer coil, and the cooling pipe is assembled as follows: the bottom surface of the lower grinding disc 2 is cut with a circular cooling groove 21, which is a sieve-shaped groove with a horizontal and vertical interval of 30mm, a groove width of 5mm, and a depth of 20mm; a 5mm wide and 20mm thick copper cooling copper bar 4.6 is tightly embedded in the cooling groove 21. After the tight fit, the gap is filled with thermal grease. After the cooling copper bar 4.6 is embedded, it is flush with the bottom surface of the lower grinding disc 2; after the cooling copper bar 4.6 is embedded, a 1.5mm thick round copper material is attached to the bottom surface of the lower grinding disc 2. A cooling copper plate 4.5 is made of high-quality copper. The diameter of the cooling copper plate 4.5 is 100 mm smaller than the diameter of the grinding disc. A cooling pipe 4.4 made of red copper with a diameter of 8 mm is attached to the bottom surface of the cooling copper plate 4.5. The cooling pipe 4.4 is arranged in a circular "S" shape. The pipe seams are filled with thermal conductive silicone grease. The bottom surface of the cooling pipe 4.4 is sealed with insulating aluminum foil. The bottom surface of the insulating aluminum foil is insulated with polyurethane foam. The polyurethane foaming forms an insulating base plate 5.1. The insulating base plate 5.1 formed after the polyurethane foaming seals all the bottom components of the lower grinding disc 2 to form an integral whole. The insulating base plate 5.1 is 30 mm thick.

[0126] The designs of the upper grinding disc 1, lower grinding disc 2, refrigeration system 4, and drive system 3 are the same as those described in Example 1, except that the lower grinding disc 2 gradually concaves to 8 mm inward, resembling a pot bottom, within a 300 mm diameter center diameter. The refrigerated millstone is also provided with an insulation cover 5.2, the design of which is the same as that described in Example 1. The refrigerated millstone is also provided with a rack box 6, the spatial arrangement of which is the same as that described in Example 1. The difference from Example 1 is that the frequency conversion controller 3.1 of this embodiment is housed outside the rack box 6, which is provided with a panel (omitted and not shown) and provides wiring holes for the frequency conversion controller 3.1. The lower space of the rack box 6 of this embodiment also houses a lifting assembly 7, the design of which is the same as that described in Example 1. The difference from Example 1 is that the lifting controller 7.1 of this embodiment is housed outside the rack box 6, the panel providing wiring holes for the lifting controller 7.1.

[0127] Example 3

[0128] A refrigerated stone mill for processing ice drinks and beverages, as shown in Figures 1, 20 and 3-17, includes an upper grinding disc 1, a lower grinding disc 2, a drive system 3 and a refrigeration system 4. The upper grinding disc 1 is fitted with the lower grinding disc 2, and the drive system 3 and the refrigeration system 4 are arranged below the lower grinding disc 2. The drive system 3 is used to drive the upper grinding disc 1 to rotate; the bottom surface of the lower grinding disc 2 is indirectly attached with a cooling exhaust pipe 4.4 of the refrigeration system 4, and the refrigeration system 4 is used to cool the lower grinding disc 2 and the upper grinding disc 1, and can also cool the ground material.

[0129] Among them, the cooling exhaust pipe 4.4 is a single-layer coil, and the cooling exhaust pipe is assembled as follows: a cooling copper plate 4.5 made of brass with a thickness of 20 mm is attached to the bottom surface of the lower grinding disc 2, and a circular groove 22 is dug on the bottom surface of the cooling copper plate 4.5. The groove 22 is arranged in a spiral groove, with a groove width of 9 mm, a depth of 10 mm, and an interval of 5 mm between adjacent grooves; a cooling exhaust pipe 4.4 made of red copper with a diameter of 8 mm is tightly embedded in the groove 22, and the gap is filled with thermal grease. The bottom surface of the cooling copper plate 4.5 is insulated with polyurethane foam, and the polyurethane foaming obtains an insulating bottom plate 5.1. The insulating bottom plate 5.1 formed after polyurethane foaming seals all the bottom components of the lower grinding disc 2 into a whole. The insulating bottom plate 5.1 is 30 mm thick.

[0130] The designs of the upper grinding disc 1, lower grinding disc 2, refrigeration system 4, and drive system 3 are the same as those described in Example 1. The refrigerated millstone is also designed with a heat-insulating cover 5.2 and a frame box 6. The design of the heat-insulating cover 5.2 is the same as that described in Example 1. The spatial arrangement of the frame box 6 is the same as that described in Example 1, except that a digital control display 9 is also mounted on the frame box 6. The digital control display 9 is electrically connected to the temperature sensor 8 and the drive system 3 and is used to display the refrigeration temperature and the grinding disc rotation speed. The lower space of the frame box 6 of the refrigerated millstone of this embodiment is also equipped with a lifting assembly 7. The design of the lifting assembly 7 is the same as that described in Example 1.

[0131] Example 4

[0132] A refrigerated stone mill for processing ice drinks and beverages, as shown in Figures 1, 21 and 3-17, includes an upper grinding disc 1, a lower grinding disc 2, a drive system 3 and a refrigeration system 4. The upper grinding disc 1 is fitted with the lower grinding disc 2, and the drive system 3 and the refrigeration system 4 are arranged below the lower grinding disc 2. The drive system 3 is used to drive the upper grinding disc 1 to rotate; the bottom surface of the lower grinding disc 2 is indirectly attached with a cooling exhaust pipe 4.4 of the refrigeration system 4, and the refrigeration system 4 is used to cool the lower grinding disc 2 and the upper grinding disc 1, and can also cool the ground material.

[0133] The cooling pipe 4.4 is a single-layer coil. The cooling pipe is assembled as follows: A 20mm-thick brass cooling copper plate 4.5 is attached to the bottom of the lower grinding disc 2. The bottom of the cooling copper plate 4.5 is cut with a generally circular groove 22. The groove 22 is arranged in an S-shaped pattern, 9mm wide and 10mm deep, with 5mm spacing between adjacent grooves. Each groove curves 180° at 20mm from the edge of the cooling copper plate 4.5. The cooling pipe 4.4, 8mm in diameter, is tightly embedded in the groove 22. The gap is filled with thermal grease. The bottom of the cooling copper plate 4.5 is insulated with polyurethane foam, which forms an insulating base plate 5.1. This insulating base plate 5.1, formed after the polyurethane foaming, seals all the bottom components of the lower grinding disc 2, forming a single unit. The insulating base plate 5.1 is 30mm thick.

[0134] The designs of the upper grinding disc 1, lower grinding disc 2, refrigeration system 4, and drive system 3 are the same as those described in Example 1, except that the lower grinding disc 2 is gradually recessed to 5 mm in diameter, resembling a pot bottom, within a 300 mm diameter center diameter. The refrigerated millstone is also equipped with an insulation cover 5.2 and a frame box 6. The design of the insulation cover 5.2 is the same as that described in Example 1, and the spatial arrangement of the frame box 6 is the same as that described in Example 1. A lifting assembly 7 is also housed in the lower space of the frame box 6 of the refrigerated millstone of this embodiment. The design of the lifting assembly 7 is the same as that described in Example 1.

[0135] Example 5

[0136] A refrigerated stone mill for processing ice drinks, as shown in Figures 1, 22 and 3-17, includes an upper grinding disc 1, a lower grinding disc 2, a drive system 3 and a refrigeration system 4. The upper grinding disc 1 is fitted with the lower grinding disc 2, and the drive system 3 and the refrigeration system 4 are arranged below the lower grinding disc 2. The drive system 3 is used to drive the upper grinding disc 1 to rotate; the bottom surface of the lower grinding disc 2 is directly embedded with a cooling exhaust pipe 4.4 of the refrigeration system 4. The refrigeration system 4 is used to cool the lower grinding disc 2 and the upper grinding disc 1, and can also cool the ground material.

[0137] Among them, the cooling exhaust pipe 4.4 is a single-layer coil, and the cooling exhaust pipe is assembled as follows: the bottom surface of the lower grinding disc 2 is excavated with a circular exhaust pipe groove 23 as a whole. The exhaust pipe groove 23 is arranged in a spiral groove with a groove width of 9 mm and a depth of 10 mm. The adjacent grooves are spaced 5 mm apart, and the outermost groove is 50 mm away from the edge of the lower grinding disc 2; the cooling exhaust pipe 4.4 made of copper with a diameter of 8 mm is tightly embedded in the exhaust pipe groove 23, and the gap is filled with thermal grease. The bottom surface of the lower grinding disc 2 is attached with an insulating base plate 5.1, and the thickness of the insulating base plate 5.1 is 30 mm.

[0138] The designs of the upper grinding disc 1, lower grinding disc 2, refrigeration system 4, and drive system 3 are the same as those described in Example 1. Furthermore, the discharge port 2.4 opens from the guide ring groove 2.3 to the bottom surface. A scraper is mounted on the outer edge of the upper grinding disc 1, rotating synchronously with the upper grinding disc 1 to scrape material from the guide ring groove 2.3 into the discharge port 2.4. The refrigerated mill also includes a heat shield 5.2 and a frame box 6. The design of the heat shield 5.2 is the same as that described in Example 1, and the spatial arrangement of the frame box 6 is the same as that described in Example 1. A lifting assembly 7 is also housed in the lower space of the frame box 6 of this embodiment. The design of the lifting assembly 7 is the same as that described in Example 1. The cooling ring 1.4 of this embodiment is made of carbon steel.

[0139] Example 6

[0140] A refrigerated stone mill for processing ice drinks, as shown in Figures 1, 23 and 3-17, includes an upper grinding disc 1, a lower grinding disc 2, a drive system 3 and a refrigeration system 4. The upper grinding disc 1 is fitted with the lower grinding disc 2, and the drive system 3 and the refrigeration system 4 are arranged below the lower grinding disc 2. The drive system 3 is used to drive the upper grinding disc 1 to rotate; the bottom surface of the lower grinding disc 2 is directly embedded with a cooling exhaust pipe 4.4 of the refrigeration system 4. The refrigeration system 4 is used to cool the lower grinding disc 2 and the upper grinding disc 1, and can also cool the ground material.

[0141] The cooling pipes 4.4 are single-layer coils, assembled as follows: A circular pipe groove 23 is cut into the underside of the lower grinding disc 2. This groove 23 has an S-shaped pattern, 9mm wide and 10mm deep, with 5mm spacing between adjacent grooves. Each groove curves 180° at a distance of 50mm from the edge of the lower grinding disc 2. The 8mm-diameter copper cooling pipes 4.4 are tightly embedded within the groove 23, with the gaps filled with thermal grease. A 30mm-thick insulating baseplate 5.1 is attached to the underside of the lower grinding disc 2.

[0142] The designs of the upper grinding disc 1, lower grinding disc 2, refrigeration system 4, and drive system 3 are the same as those described in Example 1. The refrigerated millstone is also configured with a heat-insulating cover 5.2 and a frame box 6. The design of the heat-insulating cover 5.2 is the same as that described in Example 1, and the spatial arrangement of the frame box 6 is the same as that described in Example 1. The lower space of the frame box 6 of the refrigerated millstone of this embodiment also houses a lifting assembly 7. The design of the lifting assembly 7 is the same as that described in Example 1.

[0143] Example 7

[0144] A refrigerated stone mill for processing ice drinks and beverages, as shown in Figures 1, 24 and 3-17, includes an upper grinding disc 1, a lower grinding disc 2, a drive system 3 and a refrigeration system 4. The upper grinding disc 1 is fitted with the lower grinding disc 2, and the drive system 3 and the refrigeration system 4 are arranged below the lower grinding disc 2. The drive system 3 is used to drive the upper grinding disc 1 to rotate; the bottom surface of the lower grinding disc 2 is directly embedded with a cooling exhaust pipe 4.4 of the refrigeration system 4. The refrigeration system 4 is used to cool the lower grinding disc 2 and the upper grinding disc 1, and can also cool the ground material.

[0145] Among them, the cooling exhaust pipe 4.4 is a double-layer coil, and the cooling exhaust pipe is assembled as follows: the bottom surface of the lower grinding disc 2 is excavated with a circular exhaust pipe groove 23 as a whole. The exhaust pipe groove 23 is arranged in a spiral groove with a groove width of 9 mm and a depth of 20 mm. The adjacent grooves are spaced 5 mm apart, and the outermost groove is 50 mm away from the edge of the lower grinding disc 2; the exhaust pipe groove 23 is tightly embedded with a double-layer cooling exhaust pipe 4.4 made of red copper with a diameter of 8 mm, and the gap is filled with thermal grease. The bottom surface of the lower grinding disc 2 is attached with an insulating base plate 5.1, and the thickness of the insulating base plate 5.1 is 30 mm.

[0146] The designs of the upper grinding disc 1, lower grinding disc 2, refrigeration system 4, and drive system 3 are the same as those described in Example 1. The refrigerated millstone is also configured with a heat-insulating cover 5.2 and a frame box 6. The design of the heat-insulating cover 5.2 is the same as that described in Example 1, and the spatial arrangement of the frame box 6 is the same as that described in Example 1. The lower space of the frame box 6 of the refrigerated millstone of this embodiment also houses a lifting assembly 7. The design of the lifting assembly 7 is the same as that described in Example 1.

[0147] Example 8

[0148] A refrigerated stone mill for processing ice drinks, as shown in Figures 1, 25 and 3-17, includes an upper grinding disc 1, a lower grinding disc 2, a drive system 3 and a refrigeration system 4. The upper grinding disc 1 is fitted with the lower grinding disc 2, and the drive system 3 and the refrigeration system 4 are arranged below the lower grinding disc 2. The drive system 3 is used to drive the upper grinding disc 1 to rotate; the bottom surface of the lower grinding disc 2 is directly embedded with a cooling exhaust pipe 4.4 of the refrigeration system 4. The refrigeration system 4 is used to cool the lower grinding disc 2 and the upper grinding disc 1, and can also cool the ground material.

[0149] The cooling pipes 4.4 are double-layered coils, assembled as follows: A circular pipe groove 23 is cut into the underside of the lower grinding disc 2. This groove 23 features an S-shaped pattern, 9mm wide and 20mm deep, with 5mm spacing between adjacent grooves. Each groove curves 180° at a distance of 50mm from the edge of the lower grinding disc 2. Tightly embedded within this groove 23 are the double-layered 8mm-diameter copper cooling pipes 4.4, with the gaps filled with thermal grease. A 30mm-thick insulating baseplate 5.1 is attached to the underside of the lower grinding disc 2.

[0150] The designs of the upper grinding disc 1, lower grinding disc 2, refrigeration system 4, and drive system 3 are the same as those described in Example 1. The refrigerated millstone is also configured with a heat-insulating cover 5.2 and a frame box 6. The design of the heat-insulating cover 5.2 is the same as that described in Example 1, and the spatial arrangement of the frame box 6 is the same as that described in Example 1. The lower space of the frame box 6 of the refrigerated millstone of this embodiment also houses a lifting assembly 7. The design of the lifting assembly 7 is the same as that described in Example 1.

[0151] Example 9

[0152] A refrigerated stone mill for processing ice drinks and beverages, as shown in Figures 1, 26 and 3-17, includes an upper grinding disc 1, a lower grinding disc 2, a drive system 3 and a refrigeration system 4. The upper grinding disc 1 is fitted with the lower grinding disc 2, and the drive system 3 and the refrigeration system 4 are arranged below the lower grinding disc 2. The drive system 3 is used to drive the upper grinding disc 1 to rotate; the bottom surface of the lower grinding disc 2 is indirectly attached with a cooling exhaust pipe 4.4 of the refrigeration system 4, and the refrigeration system 4 is used to cool the lower grinding disc 2 and the upper grinding disc 1, and can also cool the ground material.

[0153] Among them, the cooling exhaust pipe 4.4 is a double-layer coil, and the cooling exhaust pipe is assembled as follows: a cooling copper plate 4.5 made of brass with a thickness of 20mm is attached to the bottom surface of the lower grinding disc 2, and a circular groove 22 is dug on the bottom surface of the cooling copper plate 4.5. The groove 22 is arranged in a spiral groove, with a groove width of 9mm and a depth of 16mm, and an interval of 5mm between adjacent grooves; a double-layer cooling exhaust pipe 4.4 made of red copper with a diameter of 8mm is tightly embedded in the groove 22, and the gap is filled with thermal grease. The bottom surface of the cooling copper plate 4.5 is insulated with polyurethane foam, and the polyurethane foaming obtains an insulating bottom plate 5.1. The insulating bottom plate 5.1 formed after polyurethane foaming seals all the bottom components of the lower grinding disc 2 into a whole. The insulating bottom plate 5.1 is 30mm thick.

[0154] The designs of the upper grinding disc 1, lower grinding disc 2, refrigeration system 4, and drive system 3 are the same as those described in Example 1. The refrigerated millstone is also configured with a heat-insulating cover 5.2 and a frame box 6. The design of the heat-insulating cover 5.2 is the same as that described in Example 1, and the spatial arrangement of the frame box 6 is the same as that described in Example 1. The lower space of the frame box 6 of the refrigerated millstone of this embodiment also houses a lifting assembly 7. The design of the lifting assembly 7 is the same as that described in Example 1.

[0155] Example 10

[0156] A refrigerated stone mill for processing ice drinks, as shown in Figures 1, 3-8, 11-13, 15-17, 18, and 27-30, includes an upper grinding disc 1, a lower grinding disc 2, a drive system 3, and a refrigeration system 4. The upper grinding disc 1 is fitted with the lower grinding disc 2, and the drive system 3 and the refrigeration system 4 are provided below the lower grinding disc 2. The drive system 3 is used to drive the upper grinding disc 1 to rotate; the core of the lower grinding disc 2 is inlaid with cooling pipes 4.4 of the refrigeration system 4. The refrigeration system 4 is used to cool the lower grinding disc 2 and the upper grinding disc 1, and can also cool the ground material.

[0157] Among them, the cooling exhaust pipe 4.4 is a single-layer coil, and the cooling exhaust pipe is assembled as follows: the lower grinding disc 2 includes a grinding plate 24 that can be freely disassembled and assembled and a hollow disc body 25. The bottom surface of the grinding plate 24 is cut with a card groove 24.1, and the hollow disc core of the disc body 25 is inlaid with a "convex" type cooling copper plate 4.51. The top surface of the "convex" type cooling copper plate 4.51 is integrally provided with a card pin 4.52. The card groove 24.1 and the card pin 4.52 are adapted to be plugged in, so that the grinding plate 24 is assembled on the "convex" type cooling copper plate 4.51. The card groove 24.1 and the card pin 4.52 are circular. The bottom surface of the "convex" cooling copper plate 4.51 is attached with a cooling pipe 4.4 made of copper with a diameter of 8mm. The cooling pipe 4.4 is arranged in a circular spiral, and the pipe seam is filled with thermal grease; the bottom surface of the cooling pipe 4.4 and the lower grinding wheel 2 is attached with an insulating base plate 5.1 with a thickness of 30mm.

[0158] The designs of the upper and lower grinding discs 1 and 2, the refrigeration system 4, and the drive system 3 are the same as those described in Example 1. As shown in Figure 31, the refrigerated millstone is also designed with an insulation cover 5.2. Its structure is the same as that of Example 1, but differs from Example 1 in that the lower cover 5.22 is made of a non-transparent material. A retaining ring 5.221 made of transparent, food-grade acrylic is positioned on the inner wall of the lower cover 5.22, located above the edge of the disc body 25. This retaining ring 5.221 is used to isolate the lower cover 5.22 and prevent it from contacting the material. The refrigerated millstone is also designed with a rack box 6. The spatial layout of the rack box 6 is the same as that described in Example 1. The difference from Example 1 is that a digital control display 9 is also mounted on the rack box 6. The digital control display 9 is electrically connected to the temperature sensor 8 and the drive system 3 and is used to display the refrigeration temperature and the grinding disc speed. The lower space of the rack box 6 of the refrigerated millstone in this embodiment also houses a lifting assembly 7. The design of the lifting assembly 7 is the same as that described in Example 1.

[0159] Example 11

[0160] A refrigerated stone mill for processing ice drinks is the same as described in Example 10. The difference between this embodiment and Example 10 is that the slot 24.1 and the latch 4.52 are crescent-shaped; the fine teeth of the upper grinding disc 1 and the lower grinding disc 2 are ground into arc angles from the outer edge of the disc to the inner 1 / 2 of the groove edge, as shown in Figures 32-33.

[0161] The operating principle of the refrigeration stone mill in the above-mentioned embodiments 1 to 11 is as follows:

[0162] The upper grinding disc rotates: the frequency converter 3.1 controls the speed of the motor 3.2, which is decelerated by the reducer and drives the drive shaft 3.5 to rotate. The drive shaft 3.5 passes through the lower grinding disc 2, and the top end is engaged with the cooling ring 1.4 of the upper grinding disc 3, driving the upper grinding disc 3 to rotate.

[0163] Lifting and lowering of the upper grinding disc: the lifting controller 7.1 controls the rotation of the lifting motor 7.2, and the power is transmitted to the vertical screw 7.6 through the bevel gear to move up and down; during the upward movement, the top end of the vertical screw hits the bottom end of the drive shaft 3.5, thereby causing the drive shaft 3.5 to move upward, and then the upper grinding disc 1 moves upward, opening the upper and lower grinding gear layers to facilitate cleaning of the grinding gear; during the downward movement, the vertical screw moves downward, and the drive shaft 3.5 and the upper grinding disc 1 also move downward with gravity, closing the upper and lower grinding gear layers.

[0164] Refrigeration system operation: Refrigerator 4.1 performs cooling, and the compressed exhaust gas enters the condenser pipe 4.2, where it is cooled and condensed by cooling fan 4.3. The condensed refrigerant is throttled through a capillary tube and supplied to the cooling pipe 4.4. After absorbing heat after vaporizing due to the increased space, the evaporated gas in the cooling pipe 4.4 is sucked back into the refrigerator 4.1 for circulating refrigeration, continuously delivering cold energy to the grinding wheel.

[0165] In the refrigerated stone mill, refrigerator 4.1 includes a built-in controller that monitors the refrigeration temperature via temperature sensor 8, maintaining an adjustable constant temperature on the grinding disc. The rational design of the refrigeration system, combined with the grinding disc's optimal performance, provides enhanced hygienic control during food processing, preventing microbial growth and meeting hygiene requirements. Grinding materials at low temperatures ensures that their composition is not damaged, maximizing the preservation of nutrients and food taste. Furthermore, since microbial control is achieved, the grinding disc can be cleaned less frequently, requiring only refrigerated temperature during standby operation.

[0166] Parameters and operating parameters of the refrigeration mill equipment of Examples 1 to 11 above:

[0167] Motor 3.2 is a 4-pole, three-phase asynchronous motor with a standard speed of 1500 rpm. Reducer 3.3 is a worm gear reducer with a speed ratio of 40:1. Refrigerated Mill Operation: Refrigeration system 4 operates to bring the center of the grinding disc to a refrigerated temperature of 0 to -15°C. The upper grinding disc 1 slowly starts, gradually increasing its speed from a standstill to 30 to 50 rpm over 8 to 15 seconds. Material is then added for grinding. Refrigerated Mill Standby: The upper grinding disc 1 stops rotating, while the refrigeration system continues to operate, maintaining a refrigerated temperature of 0 to -15°C to inhibit bacterial growth.

[0168] Refrigeration and production capacity experimental data of refrigeration stone mill:

[0169] The following example shows that the total thickness of the grinding wheel is 70mm, the grinding tooth part is 60mm thick, the grinding wheel center is recessed 10mm, and the bottom plane has a 20mm deep groove embedded in the cooling copper bar. The actual thickness of the stone through which the cooling source passes in the center of the grinding wheel is 30mm, which means a transmission distance of 30mm. According to the stone conductivity coefficient of 2 and the bottom plate 0.1m 2 The heat transfer area is large, the evaporation temperature of the refrigerant (such as Freon) is -26.2°C, and when the temperature inside the millstone is maintained at -5°C, 150 kcal of cooling can be transferred per hour. Through the carbon steel shaft with a length of 100mm and a diameter of 35mm and the cooling ring, 30 kcal of cooling can be conducted per hour. The stone mill reserves and evaporative cooling capacity is 200 kcal. At room temperature, the millstone temperature can be reduced to about 0°C after 100 minutes of startup. After that, the heat transfer of 180 kcal per hour can cool 8kg of water from 20°C to -5°C, 12kg of water from 10°C to -5°C, and 36kg of water from 0°C to -5°C.

[0170] Based on this conductivity, the machine can produce 8kg of finished product per hour from room temperature ingredients, 12kg from ingredients at 10°C, or 36kg from ingredients at 0°C. Due to the varying temperatures of various raw materials and ingredients (including ice, room temperature fruit, frozen fruit, dried fruit, grains, water, milk, oil, sugar, etc.), the overall production capacity is approximately 60L / h of finished soft ice cream.

[0171] Experimental data of heat exchange capacity of evaporator of refrigeration stone mill:

[0172] The copper tube diameter of the cooling pipe Various arrangements and combinations are all configured as 20-meter-long refrigeration evaporators, with a total evaporation area of ​​0.52m 2 For example, using copper as a material, the thermal conductivity reaches 401, which is twice the thermal conductivity area of ​​the bottom of the grinding wheel and exceeds the heat exchange capacity of the grinding wheel. For example, the configuration of the refrigerator brand (Hua Yi) model (HY113Y), the standard cooling capacity for low-temperature industrial and mining is 375W (322.5 kcal), the refrigerant is 134A, and the evaporation temperature is -26°C, which is twice the production capacity requirement and can be operated intermittently, which is a reasonable configuration.

Claims

1. A refrigerated stone mill for processing ice drinks, the refrigerated stone mill comprising an upper grinding disc (1), a lower grinding disc (2), a driving system (3) and a refrigeration system (4), wherein the upper grinding disc (1) and the lower grinding disc (2) are in contact with each other; characterized in that: A driving system (3) and a refrigeration system (4) are arranged below the lower grinding disc (2); the driving system (3) is used to drive the upper grinding disc (1) to rotate; a cooling pipe (4.4) of the refrigeration system (4) is indirectly attached to or directly embedded in the bottom surface of the lower grinding disc (2), or the core of the lower grinding disc (2) is inlaid with a cooling pipe (4.4) of the refrigeration system (4), which is used to cool the grinding disc and the grinding material.

2. A refrigeration stone mill for processing ice drinks and food according to claim 1, characterized in that: The cooling pipe (4.4) is a single-layer coil or a multi-layer coil.

3. The refrigeration stone mill for processing ice drinks and food according to claim 1, characterized in that: There are two ways to indirectly attach the bottom surface, and you can choose one of them: In one embodiment, the bottom surface of the lower grinding disc (2) is provided with a cooling groove (21) which is rectangular or circular in shape as a whole, the cooling groove (21) is a sieve-shaped groove, a cooling copper bar (4.6) is tightly embedded in the cooling groove (21), a gap is filled with thermal grease, and the cooling copper bar (4.6) is flush with the bottom surface of the lower grinding disc (2) after being embedded; a cooling copper plate (4.5) is attached to the bottom surface of the lower grinding disc (2) after the cooling copper bar (4.6) is embedded, and the cooling copper plate (4.5) is A cooling pipe (4.4) is attached to the bottom surface. The cooling pipe (4.4) is arranged in a spiral or "S" shape in a rectangular or circular shape as a whole. The pipe gap is filled with thermal conductive silicone grease. The bottom surface of the cooling pipe (4.4) is sealed with insulating aluminum foil. The bottom surface of the insulating aluminum foil is insulated by polyurethane foaming. The polyurethane foaming obtains an insulating bottom plate (5.1). The insulating bottom plate (5.1) formed after the polyurethane foaming seals all the bottom components of the lower grinding disc (2) to form a whole. Another method is that a cooling copper plate (4.5) is attached to the bottom surface of the lower grinding disc (2), and a groove (22) which is rectangular or circular as a whole is cut on the bottom surface of the cooling copper plate (4.5). The groove (22) is a spiral groove or an "S"-shaped groove. A cooling pipe (4.4) is tightly embedded in the groove (22), and the gap is filled with thermal conductive silicone grease. The bottom surface of the cooling copper plate (4.5) is insulated by polyurethane foaming. The polyurethane foaming obtains an insulating bottom plate (5.1). The insulating bottom plate (5.1) formed after the polyurethane foaming seals all the bottom components of the lower grinding disc (2) to form a whole.

4. The refrigeration stone mill for processing ice drinks and food according to claim 1, characterized in that: The bottom surface is directly embedded as follows: the bottom surface of the lower grinding disc (2) is cut with a pipe row groove (23) which is generally rectangular or circular, the pipe row groove (23) is a spiral groove or an "S"-shaped groove, a cooling pipe (4.4) is tightly embedded in the pipe row groove (23), the gap is filled with thermal conductive silicone grease, and the bottom surface of the lower grinding disc (2) is attached with a heat-insulating bottom plate (5.1).

5. The refrigeration stone mill for processing ice drinks and food according to claim 1, characterized in that: The disc core is inlaid as follows: the lower grinding disc (2) includes a grinding plate (24) that can be freely disassembled and assembled and a hollow disc body (25); the bottom surface of the grinding plate (24) is provided with a slot (24.1); the hollow disc core of the disc body (25) is inlaid with a "convex" type cooling copper plate (4.51); the top surface of the "convex" type cooling copper plate (4.51) is integrally provided with a latch (4.52); the slot (24.1) and the latch (4.52) are adapted to be plugged in, so that the grinding plate (24) is assembled on the "convex" type cooling copper plate (4.51); The bottom surface of the "convex" type cooling copper plate (4.51) is attached with a cooling pipe (4.4), which is arranged in a spiral or "S" shape in an overall rectangular or circular shape; or the bottom surface of the "convex" type cooling copper plate (4.51) is drilled with a groove (22) in an overall rectangular or circular shape, which is a spiral groove or an "S" shape groove, and the cooling pipe (4.4) is tightly embedded in the groove (22), and the gap is filled with thermal conductive silicone grease; the cooling pipe (4.4) and the bottom surface of the lower grinding disc (2) are attached with a heat-insulating bottom plate (5.1).

6. The refrigeration stone mill for processing ice drinks and food according to claim 5, characterized in that: The slot (24.1) and the latch (4.52) are circular, elliptical, rectangular, triangular, polygonal or crescent-shaped; the lower grinding disc (2) is made of stone, metal or plastic.

7. The refrigeration stone mill for processing ice drinks and food according to claim 1, characterized in that: The upper grinding disc (1) has a disc diameter of 200 mm to 600 mm and a thickness of 100 mm to 300 mm; the upper grinding disc (1) is provided with a blind hole type central slot (1.1), a through hole type eccentric feeding port (1.2), an upper grinding tooth (1.3) and a funnel slot (1.5); the diameter of the central slot (1.1) is 60 mm ± 5 mm, and a "θ-shaped" cooling ring (1.4) is embedded in the central slot (1.1); The diameter of the eccentric feeding port (1.2) is 100 mm ± 20 mm, and a feeding bevel (1.21) is provided downward at a height of 35 mm ± 5 mm from the bottom surface of the upper grinding disc (1), extending to the grinding tooth plane, the feeding bevel (1.21) and the grinding tooth plane form an angle of 30° ± 2°, and the feeding bevel (1.21) is in a rounded angle to guide the flow to the disc center; the upper grinding teeth (1.3) are divided into an inner ring coarse tooth area and an outer ring fine tooth area, and the inner ring coarse tooth area is divided into 8 sectors, From 5mm to 10mm from the inner edge of the center slot (1.1) to 35mm±5mm from the outer edge of the disk, each sector extends outward at 90° from the inside, the height of the coarse teeth is 4mm±0.5mm, the vertical angle surface of the coarse teeth is 80° to 90° with the plane of the disk body and the other angle surface is 5° to 10° with the plane of the disk body to form an angular tooth protrusion, and the coarse teeth are arranged at an oblique angle of 90°±5° with the center line of the disk, arranged into a sharp coarse tooth area; each sector is from The two side lines extending outward from the center of the disk, one side is a right-angled vertical edge with a depth of 4mm±0.5mm, and the other side is a beveled edge with a grinding angle of 30°±5° with the disk surface. The two adjacent sectors form an oblique groove after docking; the outer ring fine tooth area is between the inner ring coarse tooth area and the outer edge of the disk surface, and the fine teeth are evenly arranged at 30°±2° with the center line of the disk. The fine teeth are grooves with a depth of 3mm±1mm and a width of 4mm±1mm; The lower grinding disc (2) has a disc diameter of 400 mm to 800 mm and a thickness of 30 mm to 80 mm. The lower grinding disc (2) is provided with a central through hole (2.1), lower grinding teeth (2.2), a material guide ring groove (2.3) and a material discharge port (2.4). The central through hole (2.1) has a diameter of 40 mm to 50 mm, the material guide ring groove (2.3) has a width of 100 mm ± 10 mm, the lower grinding teeth (2.2) are divided into an inner ring coarse tooth area and an outer ring fine tooth area, the inner ring coarse tooth area is divided into 8 sectors, from 8 mm to 15 mm from the inner edge of the central through hole (2.1) to 35 mm ± 5 mm from the outer edge of the disc surface, each sector extends from the inside at 90° to the outside, the coarse tooth height is 4 mm ± 0.5 mm, the vertical angle surface of the coarse tooth is 80° to 90° with the disc body plane and the other angle surface is 80° to 90° with the disc body plane. The body plane is 5° to 10° with an angular tooth protrusion, and the coarse teeth are arranged at an oblique angle of 90°±5° with the center line of the disk, forming a sharp coarse tooth area; each sector is evenly distributed with 2 grooves extending outward from the center of the disk, with a groove depth of 4mm±0.5mm, one groove side of the groove is a right-angle vertical edge, and the other groove side is a beveled edge of 30°±5° with the disk surface by grinding the teeth, forming an outflow groove line; each sector has two side lines extending outward from the center of the disk, one side is a right-angled vertical edge with a depth of 4mm±0.5mm, and the other side is a beveled edge of 30°±5° with the disk surface by grinding the teeth, and an oblique groove is formed after the adjacent two sectors are connected; the inner ring coarse tooth area and the outer surface of the disk The outer ring fine tooth area is between the edges, and the fine teeth are uniformly arranged at 30°±2° with the center line of the disc. The fine teeth are grooves with a groove depth of 3mm±1mm and a groove width of 4mm±1mm. Within the range of 100mm to 350mm of the center diameter of the disc surface of the lower grinding disc (2), the whole gradually shrinks to 5mm to 10mm in a pot bottom shape at a distance of 8mm to 15mm from the inner edge of the central through hole (2.1). There is a sleeve structure protruding 1mm to 5mm from the disc surface from the center through hole (2.1) to the outer periphery of the hole at a distance of 8mm to 15mm. When the disc surface is shrunk, the disc core forms a sleeve structure protruding 6mm to 15mm from the tooth surface, and the sleeve thickness is 8mm to 15mm.

8. The refrigeration stone mill for processing ice drinks and food according to claim 7, characterized in that: The fine teeth of the upper grinding disc (1) and the lower grinding disc (2) are ground into arc angles from the outer edge of the disc to the groove edges at the inner 1 / 3 to 1 / 2.

9. The refrigeration stone mill for processing ice drinks and food according to claim 7, characterized in that: The outer side edge of the guide ring groove (2.3) is inclined inwardly by 10° to 15°; a scraper is also installed on the outer side edge of the upper grinding disc (1), which rotates synchronously with the upper grinding disc (1) and is used to scrape the material in the guide ring groove (2.3) into the discharge port (2.4).

10. The refrigeration stone mill for processing ice drinks and food according to claim 7, characterized in that: The upper grinding disc (1) and the lower grinding disc (2) are wrapped with a heat-insulating cover (5.2), and the heat-insulating cover is divided into an upper cover body (5.21) and a lower cover body (5.22). The upper cover body (5.21) and the lower cover body (5.22) are engaged with each other in a mother-and-child groove, and completely cover the upper grinding disc (1) and the lower grinding disc (2) in a closed manner.

11. A refrigeration stone mill for processing ice drinks and food according to claim 10, characterized in that: The upper cover body (5.21) is a transparent acrylic cover with a thickness of 10 mm to 20 mm; the lower cover body (5.22) is a transparent acrylic cover or a non-transparent cover, the inner wall of the lower cover body (5.22) is attached to and fixed to the outer wall of the lower grinding disc (2), and the upper cover body (5.21) can be freely disassembled and assembled; a circular opening is opened at the center of the top surface of the upper cover body (5.21), and an eccentric funnel (5.23) is placed in the circular opening, and the lower end of the eccentric funnel (5.23) is plugged into the upper grinding disc (1) top surface, the eccentric funnel (5.23) rotates synchronously with the upper grinding disc (1); the upper opening of the eccentric funnel (5.23) is integrally hollowed out and converges to the lower opening of the funnel at an eccentric angle, the lower opening of the funnel is inserted into the eccentric feeding port (1.2), and materials are fed into the eccentric funnel (5.23), and the materials automatically flow into the eccentric feeding port (1.2); the circular opening of the upper cover body (5.21) is also covered with a cover (5.24) that can be freely disassembled and assembled, which is used to cover the upper opening of the eccentric funnel (5.23); When the lower cover (5.22) is a non-transparent outer cover, a retaining ring (5.221) is arranged on the inner wall of the lower cover (5.22) and on the edge of the lower grinding disc (2). The retaining ring (5.221) is made of food grade material and is used to isolate the lower cover (5.22) to prevent The lower cover body (5.22) contacts the material.

12. The refrigeration stone mill for processing ice drinks and food according to claim 5, characterized in that: The refrigeration system (4) further comprises a refrigerator (4.1), a condenser tube (4.2) and a cooling fan (4.3); one end of the cooling tube (4.4) is connected to a capillary tube, the capillary tube is connected to the condenser tube (4.2), and the other end of the cooling tube (4.4) is connected to the refrigerator (4.1); the cooling fan (4.3) is disposed on one side of the condenser tube (4.2) and is used to air-cool the condenser tube (4.2); a temperature sensor (8) is disposed at the cooling tube (4.4) and is used to detect the refrigeration temperature of the cooling tube (4.4); The drive system (3) comprises a frequency conversion controller (3.1) and a motor (3.2); the frequency conversion controller (3.1) is electrically connected to the motor (3.2) to control the rotation speed of the motor (3.2); the motor (3.2) is connected to a reducer (3.3); the reducer (3.3) is plugged into a drive shaft (3.5) via a slot member (3.4); a slot opening (3.6) is provided at the top end of the drive shaft (3.5); the top end of the drive shaft (3.5) passes through a central through hole (2.1) and is plugged into a cooling ring (1.4) via the slot opening (3.6).

13. A refrigeration stone mill for processing ice drinks and food according to claim 12, characterized in that: The driving shaft (3.5) is also provided with sealing rings at the top and bottom surfaces of the lower grinding disc (2).

14. The refrigeration stone mill for processing ice drinks and food according to claim 12, characterized in that: The refrigeration stone mill also includes a frame box (6), the lower grinding disc (2) is placed on the frame box (6), the driving system (3) and the refrigeration system (4) are located inside the frame box (6), and the frame box (6) is designed as an upper and lower two-layer space. The upper layer of the frame box (6) is used to place a motor (3.2) and a reducer (3.3), and the reducer (3.3) is fixed to the upper layer through a machine base I (3.7), and the middle part of the machine base I (3.7) is hollow; the lower layer of the frame box (6) is used to place a refrigerator (4.1), a condenser pipe (4.2) and a cooling fan (4.3), and the refrigerator (4.1), the condenser pipe (4.2) and the cooling fan (4.3) are fixed to the lower layer through a machine base II (4.7).

15. The refrigeration stone mill for processing ice drinks and food according to claim 14, characterized in that: The frequency conversion controller (3.1) is arranged on the upper layer inside the rack box (6), or arranged outside the rack box (6); the rack box (6) is provided with a box panel.

16. A refrigeration stone mill for processing ice drinks and food according to claim 14 or 15, characterized in that: The lower space of the frame box (6) is also provided with a lifting assembly (7); the lifting assembly (7) comprises a lifting controller (7.1), a lifting motor (7.2) and a vertical lead screw (7.6); the lifting controller (7.1) is connected to and controls the lifting motor (7.2); the lifting motor (7.2) is connected to a coupling sleeve (7.3); the coupling sleeve (7.3) is plugged with a main conical wheel (7.4); the vertical lead screw (7.6) is threaded with a secondary conical wheel (7.5); the main conical wheel (7.4) is meshed with the secondary conical wheel (7.5); the lifting motor (7.2) drives the main conical wheel (7.4) to rotate, thereby driving the secondary conical wheel (7.5) to rotate, thereby causing the vertical lead screw (7.6) to move up and down; the top end of the vertical lead screw (7.6) is against the bottom end of the driving shaft (3.5).

17. A refrigeration stone mill for processing ice drinks and food according to claim 16, characterized in that: The lifting motor (7.2) and the vertical lead screw (7.6) are arranged in the lower layer inside the frame box (6), and the lifting motor (7.2) is installed on a machine stool (7.7) with a height; the lifting controller (7.1) is arranged in the lower layer inside the frame box (6), or arranged outside the frame box (6).

18. The refrigeration stone mill for processing ice drinks and food according to claim 14, characterized in that: The rack box (6) is also provided with a numerical control display (9), which is electrically connected to the temperature sensor (8) and the drive system (3) and is used to display the refrigeration temperature and the grinding disc rotation speed.

19. A method for using a refrigeration stone mill for processing ice drinks and food, using the refrigeration stone mill for processing ice drinks and food according to claim 1, characterized in that: Methods include: Refrigeration mill operation: the refrigeration system (4) is operated to make the center of the grinding disc reach a refrigeration temperature of 0°C to -15°C, the upper grinding disc (1) is slowly started, and the speed is gradually increased from a static state to 30r / min to 50r / min in 8s to 15s, and the material is added for grinding; Refrigeration mill standby: the upper grinding disc (1) stops rotating, and the refrigeration system continues to operate, maintaining a refrigeration temperature of 0°C to -15°C.

20. An application of a refrigeration stone mill for processing ice drinks and food, using the refrigeration stone mill for processing ice drinks and food according to claim 1, characterized in that: Refrigeration stone mill is used to grind and produce ice drinks in the form of snow flakes, slush, ice pellets, smoothies, ice foam or soft ice cream.

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