Crushing device for mirabilitum praeparatum toothpaste production

Abstract

The utility model provides a crushing device for mirabilitum praeparatum toothpaste production, which comprises a liquid nitrogen tank and a rack, the rack is provided with a charging barrel, a spiral conveyor and a crushing mechanism which are connected in sequence, and the spiral conveyor is used for conveying materials output by the charging barrel to a crushing chamber of the crushing mechanism; according to the scheme, materials are subjected to two-stage cooling in the two working procedures of feeding and crushing, the materials can be always kept at the brittle temperature and cannot be molten or caked, and the crushing efficiency is effectively improved. The smashing device for mirabilitum praeparatum toothpaste production can effectively smash mirabilitum praeparatum, borneol, rhizoma bletillae and other traditional Chinese medicinal materials for mirabilitum praeparatum toothpaste production, and the production efficiency of mirabilitum praeparatum toothpaste is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of crushing devices, in particular to a crushing device for producing watermelon frost toothpaste. Background Art

[0002] Watermelon Frost Toothpaste contains a variety of effective ingredients: watermelon frost, borneol, and Bletilla striata. Watermelon frost is amorphous crystals or powder formed by processing watermelon fruit with Glauber's salt. It has the effects of clearing heat and purging fire, reducing swelling and relieving pain. Borneol is a volatile, colorless, transparent or white, translucent, flaky, crisp crystal that has the effects of invigorating the mind, clearing heat and relieving pain. Bletilla striata is the dried tuber of an orchid plant, which has astringent, hemostatic, swelling-reducing and tissue-promoting properties. This combination of these three traditional Chinese medicinal ingredients helps inhibit dental plaque and relieve gingivitis.

[0003] The production of traditional Chinese medicine toothpaste often requires the pulverization of medicinal materials. However, the processing requirements for toothpaste powder differ from those for traditional Chinese medicines. Traditional Chinese medicine toothpaste generally requires a light-colored, fine, and smooth paste. Therefore, toothpaste powders typically need to be light-colored, loose, and have a particle size that meets toothpaste-grade fineness. However, watermelon frost, borneol, and Bletilla striata have complex physical and chemical properties. Borneol is rich in fat-soluble components, watermelon frost is a mixture of plant minerals, and Bletilla striata is rich in colloidal components. These three medicinal materials experience a certain degree of elastic deformation during pulverization, which can easily cause the drugs to become soft and sticky during production, making further pulverization and sieving impossible. Consequently, the powders are difficult to achieve the particle size required for paste production.

[0004] To overcome the problem of Chinese medicinal materials becoming soft and sticky during production, which can affect pulverization, low-temperature pulverization technology can be considered for difficult-to-pulverize materials. This involves using a refrigerant to rapidly cool the material to its brittle temperature or below before feeding it into a pulverizer for pulverization. This allows for adequate pulverization of materials that are difficult to pulverize at room temperature while maintaining their inherent quality. However, when this technology was applied to the aforementioned raw materials for watermelon frost toothpaste, it was found that satisfactory pulverization was still unsatisfactory. This process separates the pre-freezing and pulverization steps, resulting in a discontinuous production process, unsatisfactory reduction in raw material brittleness, and difficulty in pulverizing the medicinal powder to the required toothpaste-grade fineness.

[0005] Based on the above problems, it is necessary to design a crushing device for the production of watermelon frost toothpaste to crush watermelon frost, borneol, white ginseng and other drugs, to avoid the drugs becoming soft and sticky during the crushing process, affecting the crushing and screening, and to improve the production efficiency of watermelon frost toothpaste. Utility Model Content

[0006] The utility model provides a pulverizing device for producing watermelon frost toothpaste, which can effectively pulverize watermelon frost, borneol, bletilla striata and other Chinese medicinal materials used in the production of watermelon frost toothpaste, thereby improving the production efficiency of watermelon frost toothpaste.

[0007] In order to achieve the above technical objectives and the above technical effects, the present invention solves the above problems through the following technical solutions:

[0008] A pulverizing device for producing watermelon frost toothpaste comprises a liquid nitrogen tank and a frame. A barrel, a screw feeder, and a pulverizing mechanism are mounted on the frame and connected in sequence. The screw feeder transports material output from the barrel to a pulverizing chamber of the pulverizing mechanism. The barrel and the pulverizing chamber are respectively connected to the liquid nitrogen output end of the liquid nitrogen tank via a liquid nitrogen delivery pipeline and a valve.

[0009] In the above scheme, liquid nitrogen is transported to the barrel and the crushing chamber respectively, and the material is cooled in two stages during the feeding and crushing processes. This can keep the material at a brittle temperature, ensure the brittleness of the raw material, facilitate the crushing of the medicinal powder to the fineness of toothpaste level, reduce the difficulty of crushing Chinese medicinal materials such as watermelon frost, borneol and white ginseng used in the production of watermelon frost toothpaste, and improve the production efficiency of watermelon frost toothpaste.

[0010] Furthermore, the crushing mechanism includes a crushing chamber, a screen, a tooth plate, a cutter disc, a crushing spindle, a bearing mechanism, a coupling and a crushing drive motor; a feed port and a discharge port are respectively provided at the upper and lower ends of the crushing chamber, and the feed port is connected to the discharge end of the screw feeder; the screen is an annular screen sleeved inside the crushing chamber, and the top of the screen is connected to the feed port at the top of the crushing chamber to receive the material, and the screened material falls into the feed port at the bottom of the crushing chamber; the tooth plate is installed on the front and rear inner walls of the crushing chamber, and the crushing spindle is installed in the crushing chamber along the front and rear directions. A cutter disc is installed at the front end of the crushing spindle to crush the material, and the rear end of the crushing spindle passes through the rear wall of the crushing chamber and is connected to the crushing drive motor through a coupling; the crushing spindle and the rear wall of the crushing chamber are rotatably connected through a bearing mechanism.

[0011] Furthermore, the bearing mechanism includes a bearing sleeve fixed to the outer wall of the crushing chamber, and a bearing inner top sleeve, a bearing outer top sleeve, a bearing, and a bearing end cover installed in the bearing sleeve from front to back; the front end of the bearing inner top sleeve is limited by the cutter disc, and the bearing outer top sleeve is arranged at the tail of the bearing inner top sleeve and is limited by the bearing sleeve step; an O-ring seal is arranged between the bearing inner top sleeve and the crushing main shaft, and a high-temperature resistant skeleton oil seal is arranged between the bearing inner top sleeve and the bearing outer top sleeve.

[0012] During the watermelon frost production process, it was discovered that when the powder reached a 200-mesh size or larger, it easily entered the bearing mechanism through the gaps between the sleeve and the grinding chamber and the grinding spindle, becoming lodged within the mechanism. This, in turn, damaged the bearings, increasing the labor and material costs of replacing them. Furthermore, after cleaning the equipment, any remaining black water in the bearing mechanism could leak out, affecting the powder quality and posing a potential quality risk. Therefore, improvements were made to the bearing mechanism, including the installation of coordinated inner and outer bearing sleeves, along with O-ring seals and high-temperature resistant skeleton oil seals, to effectively prevent powder from entering the equipment and black water from leaking out.

[0013] Furthermore, the cutter disc includes cross-shaped blades, and the blades are connected by arc-shaped reinforcing ribs; the cutter disc is limited to the front end of the crushing spindle by a limiting pressure plate and a locking screw.

[0014] Furthermore, the tooth plate is composed of four sub-plates arranged along the circumference, and the teeth of two adjacent tooth plates are perpendicular.

[0015] The advantages and effects of the utility model are:

[0016] 1. This solution delivers liquid nitrogen to the barrel and crushing chamber respectively, and performs two-stage cooling on the material during the feeding and crushing processes. This can keep the material at the brittle temperature to ensure the brittleness of the raw materials. During crushing, it is always ensured that medicinal materials such as watermelon frost, borneol and white ginseng are not melted or agglomerated, effectively improving the crushing efficiency and making the powder reach the toothpaste-level particle size, which is conducive to improving the production efficiency and quality of watermelon frost toothpaste.

[0017] In this solution, pre-frozen material enters the pulverizing chamber, where it is sheared and shattered by the high-speed shearing of the blades on the cutter disc. It then impacts the inner toothed plates at high speed, further crushing the material. The material then rebounds and is sheared again by the blades. This cycle repeats until the final particle size is smaller than the mesh size of the sieve. The particles are then screened and discharged through the discharge port at the bottom of the pulverizing chamber. The combination of blades, toothed plates, and liquid nitrogen cooling effectively crushes Chinese medicinal materials, reducing the difficulty of crushing ingredients such as watermelon frost, borneol, and white ginseng used in watermelon frost toothpaste production.

[0018] 3. In this solution, the bearing mechanism is equipped with a mating outer and inner bearing sleeves. An O-ring seal is installed between the inner bearing sleeve and the pulverizing spindle, and a high-temperature resistant skeleton oil seal is installed between the inner and outer bearing sleeves. This coordinated structure effectively prevents fine medicinal material powder from entering and being retained in the bearing mechanism, preventing frequent bearing damage and increasing production costs. It also prevents contaminated black water remaining in the bearing mechanism after cleaning from seeping out and re-contaminating the material, which could pose a quality risk to the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the internal forward structure of the middle crushing mechanism;

[0021] Figure 3 for Figure 1 Schematic diagram of the internal lateral structure of the middle crushing mechanism.

[0022] Figure number identification:

[0023] 1. Liquid nitrogen tank, 2. Frame, 3. Barrel, 4. Screw conveyor, 41. Conveying cylinder, 42. Screw shaft, 43. Drive motor;

[0024] 5. Crushing mechanism, 51. Crushing chamber, 511. Feed port, 512. Discharge port, 513. Liquid nitrogen inlet, 52. Screen, 53. Tooth plate, 531. Sub-plate, 54. Cutter disc, 541. Blade, 542. Reinforcement rib, 543. Limit pressure plate, 544. Locking screw, 55. Crushing spindle, 56. Bearing mechanism, 561. Bearing sleeve, 562. Bearing inner top sleeve, 563. Bearing outer top sleeve, 564. Bearing, 565. Bearing end cover, 566. O-ring seal, 567. High-temperature resistant skeleton oil seal, 57. Coupling, 58. Crushing drive motor;

[0025] 6. Liquid nitrogen delivery pipeline, 7. Valve. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the following embodiments, but the present invention is not limited to these embodiments.

[0027] The present embodiment describes a pulverizing device for producing watermelon frost toothpaste, as shown in the attached diagram. Figure 1 As shown, it includes a liquid nitrogen tank 1, a frame 2, a barrel 3, a screw feeder 4, a crushing mechanism 5, a liquid nitrogen delivery pipeline 6, and a valve 7. The screw feeder 4 is arranged horizontally, and includes a horizontally mounted delivery barrel 41, a screw shaft 42 with a spiral blade installed in a rotationally mounted manner in the delivery barrel 41, and a drive motor 43 for driving the screw shaft 42 to rotate. The feed end and the discharge end of the screw feeder 4 are respectively connected to the barrel 3 and the crushing mechanism 5. The screw feeder 4 transports the material falling from the barrel 3 to the crushing mechanism 5 for crushing. The liquid nitrogen output end of the liquid nitrogen tank 1 transports the liquid nitrogen to the barrel 3 and the crushing mechanism 5 respectively through two parallel liquid nitrogen delivery pipelines 6. Each liquid nitrogen delivery pipeline 6 is equipped with a valve 7 and a flow meter to control the on-off.

[0028] As attached Figure 2 、 3 As shown, the pulverizing mechanism 5 includes a pulverizing chamber 51, a screen 52, a toothed plate 53, a cutter head 54, a pulverizing spindle 55, a bearing mechanism 56, a coupling 57, and a pulverizing drive motor 58. A liquid nitrogen inlet 513 is provided on the side wall of the pulverizing chamber 51, connected to the liquid nitrogen delivery pipeline 6 for receiving liquid nitrogen. A feed port 511 and a discharge port 512 are provided at the upper and lower ends of the pulverizing chamber 51, respectively. The feed port 511 is connected to the discharge end of the screw feeder 4 to receive material. The screen 52 is an annular screen that is sleeved inside the pulverizing chamber 51. The top of the screen 52 is connected to the feed port 511 of the pulverizing chamber 51 to receive material. The front and rear ends of the screen 52 are screwed to the front and rear inner walls of the pulverizing chamber 51, meaning that material must pass through the screen before it can fall into the discharge port 512 at the bottom of the pulverizing chamber 51.

[0029] The tooth plate 53 is mounted on the front and rear inner walls of the grinding chamber 51. It consists of four circumferentially arranged sub-plates 531. The teeth of adjacent tooth plates are perpendicular, enabling multi-angle cutting of the material. In this embodiment, the tooth plate 53 is a circular plate mounted coaxially with the screen 52. The diameter of the tooth plate 53 is equal to or smaller than that of the screen 52. The installation of the tooth plate 53 does not affect the connection between the screen 52 and the front and rear inner walls of the grinding chamber 51.

[0030] The front end of the pulverizing spindle 55 is inserted into the pulverizing chamber 51. A cutter disc 54 is mounted on the front end of the pulverizing spindle 55 to crush the material. The rear end of the pulverizing spindle 55 is connected to the pulverizing drive motor 58 via a coupling 57. The pulverizing spindle 55 is rotatably connected to the rear wall of the pulverizing chamber 51 via a bearing mechanism 56. The cutter disc 54 includes cross-shaped blades 541 and curved reinforcing ribs 542 between the blades 541. The cutter disc 54 is restrained at the front end of the pulverizing spindle 55 by a limiting pressure plate 543 and a locking screw 544. A pressure plate slot is defined at the front end of the cutter disc 54 that mates with the limiting pressure plate 543. The locking screw 544 passes through a through-hole in the limiting pressure plate 543 and mates with a threaded hole defined at the front end of the pulverizing spindle 55, limiting the forward movement of the cutter disc 54.

[0031] As attached Figure 3 As shown, the bearing mechanism 56 comprises a bearing sleeve 561 fixed to the outer wall of the grinding chamber 51, and, from front to back, a bearing inner sleeve 562, a bearing outer sleeve 563, a bearing 564, and a bearing end cap 565, which are sequentially installed within the bearing sleeve 561. The bearing end cap 565 seals the rear end of the bearing mechanism 56. The front end of the bearing inner sleeve 562 is restrained by the cutterhead 54, and the rear end is restrained by the inner race of the bearing. The bearing outer sleeve 563 is mounted on the rear end of the bearing inner sleeve 562. Its front end is restrained by the bearing inner sleeve 562, its outer side is steppedly restrained by the bearing sleeve 561 and locked by screws, and its rear end is restrained by the outer race of the bearing. In this embodiment, the two front and rear bearings 564 are arranged by a shaft shoulder. The bearing outer sleeve 563 and the bearing inner sleeve 562 are restrained by the outer and inner races of the front bearing 564, respectively. The bearing end cap 565 is restrained by the rear bearing 564. An O-ring seal 566 is provided between the inner top sleeve 562 of the bearing and the pulverizing main shaft 55 , and a high-temperature resistant skeleton oil seal 567 is provided between the inner top sleeve 562 of the bearing and the outer top sleeve 563 of the bearing.

[0032] When using the watermelon frost toothpaste production pulverizing device described in this embodiment, the material is first placed into the barrel 3. Then, valves 7 of the two liquid nitrogen delivery lines 6 are opened to allow liquid nitrogen to flow into the barrel 3 and the pulverizing chamber 51 of the pulverizing mechanism 5. The material in the barrel 3 is frozen, creating a refrigerated environment within the pulverizing chamber 51. Simultaneously, the screw conveyor 4 is activated to transport the material. The pulverizing drive motor 58 is activated to drive the cutterhead 54 via the pulverizing spindle 55. The blades 541 on the cutterhead 54 rotate and pulverize the material. The pulverized material falls onto the tooth plate 53 and is ground. The interaction between the high-speed rotating blades 541 and the tooth plate 53 effectively crushes the material, all while maintaining the liquid nitrogen embrittlement temperature. The finely ground material is screened through the screen 52 and discharged from the discharge port 512 at the bottom of the pulverizing chamber 51. After pulverization, the device is periodically maintained and cleaned.

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments without departing from the principles and spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A pulverizing device for producing watermelon frost toothpaste, comprising a liquid nitrogen tank (1) and a frame (2), characterized in that: The frame (2) is equipped with a barrel (3), a screw conveyor (4), and a pulverizing mechanism (5) which are connected in sequence. The screw conveyor (4) transports the material output from the barrel (3) to a pulverizing chamber (51) of the pulverizing mechanism (5). The barrel (3) and the pulverizing chamber (51) are respectively connected to the liquid nitrogen output end of the liquid nitrogen tank (1) via a liquid nitrogen delivery pipeline (6) and a valve (7).

2. A pulverizing device for producing watermelon frost toothpaste according to claim 1, characterized in that: The pulverizing mechanism (5) includes a pulverizing chamber (51), a screen (52), a tooth plate (53), a cutter disc (54), a pulverizing main shaft (55), a bearing mechanism (56), a coupling (57) and a pulverizing drive motor (58); The upper and lower ends of the crushing chamber (51) are respectively provided with a feed port (511) and a discharge port (512), and the feed port (511) is connected to the discharge end of the screw feeder (4); the screen (52) is an annular screen sleeved inside the crushing chamber (51), and the top of the screen (52) is connected to the feed port (511) at the top of the crushing chamber (51) to receive the material, and the screened material falls into the feed port (511) at the bottom of the crushing chamber (51); The toothed plates (53) are mounted on the front and rear inner walls of the crushing chamber (51), and a crushing spindle (55) is mounted on the crushing chamber (51) along the front and rear directions. A cutter disc (54) is mounted on the front end of the crushing spindle (55) to crush the material, and a rear end of the crushing spindle (55) passes through the rear wall of the crushing chamber (51) and is connected to a crushing drive motor (58) via a coupling (57). The pulverizing main shaft (55) is rotatably connected to the rear wall of the pulverizing chamber (51) via a bearing mechanism (56).

3. A pulverizing device for producing watermelon frost toothpaste according to claim 2, characterized in that: The bearing mechanism (56) comprises a bearing sleeve (561) fixed to the outer wall of the crushing chamber (51), and a bearing inner top sleeve (562), a bearing outer top sleeve (563), a bearing (564), and a bearing end cover (565) sequentially installed in the bearing sleeve (561) from front to back; the front end of the bearing inner top sleeve (562) is limitedly matched with the cutter disc (54), and the bearing outer top sleeve (563) is sleeved on the rear end of the bearing inner top sleeve (562) and is steppedly limitedly matched with the bearing sleeve (561); An O-ring seal (566) is provided between the inner bearing top sleeve (562) and the pulverizing main shaft (55), and a high-temperature resistant skeleton oil seal (567) is provided between the inner bearing top sleeve (562) and the outer bearing top sleeve (563).

4. The pulverizing device for producing watermelon frost toothpaste according to claim 2, characterized in that: The cutter disc (54) comprises cross-shaped blades (541), and the blades (541) are connected by arc-shaped reinforcing ribs (542); the cutter disc (54) is limited at the front end of the crushing main shaft (55) by a limiting pressure plate (543) and a locking screw (544).

5. The pulverizing device for producing watermelon frost toothpaste according to claim 2, characterized in that: The tooth plate (53) is composed of four sub-plates (531) arranged along the circumference, and the teeth of two adjacent tooth plates are perpendicular.

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