An easily cleanable soybean milk machine

Abstract

The present application provides an easily cleanable soymilk maker, which includes a hopper, a crushing chamber, a slurry discharging chamber, a soymilk boiling barrel and a controller; a crushing device is arranged in the crushing chamber, the crushing device includes a moving grinding head and a stationary grinding head, a slurry discharging impeller is arranged in the slurry discharging chamber, and the moving grinding head and the slurry discharging impeller rotate coaxially; the hopper is in fluid communication with the slurry discharging chamber via the crushing chamber, and the slurry discharging chamber is in fluid communication with the soymilk boiling barrel; the crushing device is configured to crush soybeans into soymilk only when the moving grinding head rotates in the second direction; the slurry discharging impeller is configured to first rotate in the first direction to output the hot water after preheating the soybeans in the hopper into the soymilk boiling barrel, and then rotate in the second direction to output the soymilk formed by crushing the soybeans into the soymilk boiling barrel to be mixed with the hot water; the soymilk boiling barrel is adapted to keep the hot water at a set temperature and boil the mixture of the soymilk and the hot water. The easily cleanable soymilk maker provided by the present application can prevent the soymilk from sticking to the pot during boiling, and the soymilk boiling barrel is easy to clean.

Description

Technical Field

[0001] The present invention relates to the technical field of food processing, and particularly to an easy-to-clean soybean milk machine. Background Art

[0002] A soybean milk machine is a food processor that can crush and grind bean materials or other food ingredients into a slurry, heat and boil it to make a drink. For household soybean milk machines, the crushing and boiling usually occur in the same cavity. That is, first, the bean materials or other food ingredients and water are crushed in the cavity to form a slurry. After the crushing is completed, the heating program is started to heat and boil the slurry in the cavity. The amount of slurry prepared at one time by a household soybean milk machine is small, and it is difficult to meet the application requirements for commercial scenarios with a large number of people such as shopping malls and factories.

[0003] A commercial soybean milk machine in the prior art uses a separately arranged slurry-making barrel and a slurry-boiling barrel to achieve the preparation of a large amount of slurry. Specifically, after soaking the bean materials, the hot water is drained, and then the bean materials are ground. After the grinding is completed, the slurry is drained into the slurry-boiling barrel. Grinding and draining are repeated until the slurry in the slurry-boiling barrel reaches the set amount, and then the slurry-boiling barrel is heated and boiled. However, the prior art has the following deficiencies: The slurry-boiling barrel is heated only after all the slurry is drained into it. At this time, due to the long standing time of some slurry in the slurry-boiling barrel and the long boiling time required for the slurry to be heated from room temperature to the boiling temperature, the slurry will precipitate, and it is easy to stick to the pot during boiling.

[0004] In view of this, it is necessary to propose a new technical solution to overcome the problems existing in the prior art. Summary of the Invention

[0005] The present invention provides an easy-to-clean soybean milk machine, which can prevent the soybean milk from sticking to the pot during boiling and the slurry-boiling barrel is easy to clean.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows: An easy-to-clean soybean milk machine includes a hopper, a crushing chamber, a slurry discharge chamber, a slurry-boiling barrel and a controller; a crushing device is arranged in the crushing chamber, the crushing device includes a moving grinding head and a static grinding head, a slurry discharge impeller is arranged in the slurry discharge chamber, and the moving grinding head and the slurry discharge impeller rotate coaxially; wherein,

[0007] The hopper is fluidly connected to the slurry discharge chamber via the crushing chamber, and the slurry discharge chamber is fluidly connected to the slurry-boiling barrel;

[0008] The crushing device is configured to crush bean materials to form soybean milk only when the moving grinding head rotates in the second direction;

[0009] The slurry discharging impeller is configured to first rotate in a first direction to output the hot water after soaking the soybeans in the hopper into the soy milk boiling barrel, and then rotate in a second direction to output the soy milk formed by crushing the soybeans into the soy milk boiling barrel to be mixed with the hot water; the first direction and the second direction are opposite to each other.

[0010] The soy milk boiling barrel is adapted to maintain the hot water at a set temperature and boil it after the soy milk and the hot water are mixed.

[0011] Optionally, the easy-to-clean soy milk machine includes a water tank, which is in fluid communication with the hopper. The water tank is configured to heat and convey purified water into the hopper to preheat the soybeans to form the hot water, or heat and convey purified water into the hopper to mix with the soybeans for warm grinding.

[0012] Optionally, the slurry discharging impeller includes an impeller body and a plurality of blades extending outward from the impeller body. The spiral direction of the blades outward from the impeller body is consistent with the spiral direction when the slurry discharging impeller rotates in the second direction.

[0013] Optionally, the slurry discharging chamber includes a liquid outlet connected to the soy milk boiling barrel. The extending direction of the liquid outlet is the tangent direction of the circular area formed by the rotation scan of the slurry discharging impeller in the second direction.

[0014] Optionally, the liquid outlet is also connected to the hopper. A valve for switching the connection between the liquid outlet and the hopper or the soy milk boiling barrel is provided on the path where the liquid outlet is connected to the hopper and the soy milk boiling barrel. The soy milk flowing out of the liquid outlet can be selectively discharged into the crushing chamber through the hopper for repeated grinding or discharged into the soy milk boiling barrel for boiling.

[0015] Optionally, the static grinding head is cylindrical, the dynamic grinding head is located inside the cylindrical static grinding head. A number of static grinding teeth are provided on the inner wall of the static grinding head. The dynamic grinding head includes a fine grinding part in the shape of a cylinder and a feeding part protruding upward from the upper end surface of the fine grinding part. A number of dynamic grinding teeth are provided on the outer wall of the fine grinding part. The feeding part includes at least two arc-shaped convex blocks. A wedge-shaped feeding area is formed between the side wall of the arc-shaped convex block and the inner wall of the static grinding head. The extending direction of the wedge-shaped feeding area from the narrow end to the open end of the wedge is consistent with the spiral direction when the dynamic grinding head rotates in the second direction.

[0016] Optionally, the width dimension of the feeding area is gradually changed from 5 mm to 0.35 mm.

[0017] Optionally, a connecting boss is further provided between the at least two arc-shaped convex blocks. A material dropping area is provided between the side wall of the connecting boss and the inner wall of the static grinding head. The material dropping area is communicated with the feeding area.

[0018] Optionally, the connecting boss is rectangular, and the height by which it protrudes from the upper end surface of the fine grinding part is lower than the height by which the arc-shaped bump protrudes from the upper end surface of the fine grinding part.

[0019] Optionally, the clearance between the outer contour of the slurry discharge impeller and the inner side surface of the slurry discharge chamber is 0.4 - 0.5 mm, and the clearance between the lower end surface of the slurry discharge impeller and the inner bottom surface of the slurry discharge chamber is 0.4 - 0.6 mm.

[0020] The easy-to-clean soymilk machine provided by the present invention can realize discharging hot water into the boiling barrel for standby by rotating the slurry discharge impeller in the first direction. Moreover, at this time, the first-direction rotation of the moving grinding head synchronously linked with the slurry discharge impeller will not grind the material, so as to ensure that the liquid discharged into the boiling barrel is pure hot water; by rotating the slurry discharge impeller and the moving grinding head in the second direction, the soymilk formed by crushing the soybean material can be discharged into the boiling barrel to realize slurry discharge; in the boiling barrel, the hot water is first heated to the set temperature, and after the soymilk and the hot water are mixed, they are boiled. In this way, the initial temperature during the boiling of the soymilk is increased, the boiling time of the soymilk is reduced, the soymilk is not easy to stick to the pot during the boiling process, and the boiling barrel is easy to clean; for the easy-to-clean soymilk machine provided by the present invention, warm water is used for preheating before crushing the soybean material, and warm water is used for grinding the soybean material during the crushing process, which can improve the crushing effect and efficiency, and further shorten the subsequent boiling time of the soymilk in the boiling barrel. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0022] Figure 1 is a perspective view of an embodiment of the soymilk machine of the present invention.

[0023] Figure 2 is an exploded perspective view of the crushing device and the slurry discharge chamber in an embodiment of the soymilk machine of the present invention.

[0024] Figure 3 is a cross-sectional view of the crushing device and the slurry discharge chamber in an embodiment of the soymilk machine of the present invention.

[0025] Figure 4 is a cross-sectional view of the slurry discharge impeller and the slurry discharge chamber in an embodiment of the soymilk machine of the present invention.

[0026] Figure 5 is a perspective view of the slurry discharge impeller in an embodiment of the soymilk machine of the present invention.

[0027] Figure 6 is a combined perspective view of the moving grinding head and the static grinding head in an embodiment of the soymilk machine of the present invention.

[0028] Figure 7 This is a combined top view of the moving grinding head and the stationary grinding head in an embodiment of the soymilk machine of the present invention.

[0029] Figure 8 This is a perspective view of the moving grinding head in an embodiment of the soymilk machine of the present invention.

[0030] Reference numerals: 1 - hopper; 2 - crushing device; 21 - moving grinding head; 211 - moving grinding teeth; 212 - fine grinding part; 213 - feeding part; 214 - connecting boss; 201 - feeding area; 202 - blanking area; 22 - stationary grinding head; 221 - stationary grinding teeth; 23 - slurry discharging impeller; 231 - impeller main body; 232 - blade; 24 - slurry discharging chamber; 241 - liquid outlet; 25 - motor; 251 - output shaft; 26 - baffle ring; 261 - baffle tab; 271 - first screw; 272 - second screw; 273 - third screw; 3 - boiling barrel; 4 - valve; 41 - circulation pipe; 42 - liquid discharging pipe; 5 - water tank. Detailed implementation manners

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of the present invention described and illustrated in the drawings here can be arranged and designed in various different configurations. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0032] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] Unless otherwise defined, the technical terms or scientific terms used in this patent document shall have the ordinary meanings as understood by those of ordinary skill in the art to which the present invention pertains. The terms "first", "second" and similar terms used in the description of the present invention's patent specification and claims do not denote any order, quantity or importance, but are merely used to distinguish different components. Similarly, terms such as "a", "an" or "the" do not denote a quantity limitation, but rather indicate the presence of at least one. Terms such as "comprising" or "including" mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. Terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be construed broadly. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The following will, with reference to the accompanying drawings, elaborate on some embodiments of the present invention. Without conflict, the features in the following embodiments may be combined with each other.

[0036] Please refer to Figures 1 to 8As shown in the figure, the present invention provides an easy-to-clean soymilk machine, which includes a hopper 1, a crushing chamber, a slurry discharging chamber 24, a soymilk boiling barrel 3, a water tank 5 and a controller (not shown). The water tank 5 is in fluid communication with the hopper 1, and the water tank 5 is configured to heat and convey purified water into the hopper 1 to preheat the soybean materials; or, heat and convey purified water into the hopper 1 to mix with the soybean materials. In one embodiment, the purified water in the water tank 5 is preheated to 90°C to 95°C and kept warm, and according to the set soymilk making process program, the controller controls the water pump to extract the hot water in the water tank 4 and introduce it into the hopper 1 to preheat the soybean materials and mix with the soybean materials to achieve warm water grinding. The hopper 1 is used to hold the soybean materials waiting for processing and the heated purified water to preheat the soybean materials waiting for processing and mix with warm water for warm water grinding. When in use, the soybean materials waiting for processing are put into the hopper 1, and the hot water in the water tank 5 is extracted by the water pump and added into the hopper 1 to preheat the soybean materials. The preheated hot water is discharged into the soymilk boiling barrel 3 through the crushing chamber and the slurry discharging chamber 24. The crushing chamber is arranged below the hopper 1 and is communicated with the hopper 1. A crushing device 2 is arranged in the crushing chamber. The crushing device 2 includes a moving grinding head 21 and a static grinding head 22. The moving grinding head 21 and the static grinding head 22 rotate relatively to grind and crush the materials to be processed. A slurry discharging impeller 23 is arranged in the slurry discharging chamber 24. The moving grinding head 21 and the static grinding head 22 are located above the slurry discharging chamber 24. The moving grinding head 21 and the slurry discharging impeller 23 rotate coaxially, and the output shaft 251 of the motor 25 is connected to the slurry discharging impeller 23 and the moving grinding head 21 at the same time to drive them. The motor 25 is used to drive the slurry discharging impeller 23 and the moving grinding head 21 to rotate in the second direction or the first direction synchronously. The hopper 1 is in fluid communication with the slurry discharging chamber 24 via the crushing chamber, and the slurry discharging chamber 24 is in fluid communication with the soymilk boiling barrel 3. The hot water in the hopper 1 and the soymilk formed by crushing the soybean materials in the crushing chamber can be discharged into the soymilk boiling barrel 3 through the slurry discharging chamber 24 for heating. Among them, the crushing device 2 is configured to crush the soybean materials into soymilk only when the moving grinding head 21 rotates in the second direction. Specifically, when the motor 25 drives the slurry discharging impeller 23 and the moving grinding head 21 to rotate in the first direction, the materials to be processed cannot be rotated into the space between the moving grinding head 21 and the static grinding head 22, and the hot water for preheating the soybean materials in the hopper 1 is discharged into the soymilk boiling barrel 3 by the slurry discharging impeller 23 rotating in the first direction and is heated to the set temperature and kept warm in the soymilk boiling barrel 3; when the motor 25 drives the slurry discharging impeller 23 and the moving grinding head 21 to rotate in the second direction, the materials to be processed are rotated into the space between the moving grinding head 21 and the static grinding head 22 to be crushed into soymilk, and the soymilk is discharged into the soymilk boiling barrel 3 by the slurry discharging impeller 23 rotating in the second direction and is mixed with the hot water in the soymilk boiling barrel 3 for heating and boiling. The first direction and the second direction are opposite. In other embodiments, the first direction can be defined as the reverse direction and the second direction can be defined as the forward direction.

[0037] The easy-to-clean soymilk machine provided by the present invention can achieve discharging hot water into the boiling barrel 3 for standby by rotating the discharging impeller 23 in the first direction. Moreover, at this time, the first-direction rotation of the moving grinding head 21 synchronously linked with the discharging impeller 23 will not grind the materials, so as to ensure that the liquid discharged into the boiling barrel 3 is pure hot water. By rotating the discharging impeller 23 and the moving grinding head 21 in the second direction, the soymilk formed by crushing the soybean materials can be discharged into the boiling barrel 3. In the boiling barrel 3, the hot water is first heated to a set temperature and kept warm, and then heated continuously after the soymilk and the hot water are mixed to boil the soymilk. In this way, the initial temperature during the soymilk boiling is increased, the boiling time of the soymilk is reduced, the soymilk is not easy to stick to the pot during the boiling process, and the boiling barrel 3 is easy to clean. The easy-to-clean soymilk machine provided by the present invention preheats with warm water before crushing the soybean materials and uses warm water for grinding during the crushing process of the soybean materials, which can improve the crushing effect and efficiency, and further shorten the subsequent boiling time of the soymilk in the boiling barrel.

[0038] Please refer to Figures 1 to 4 As shown, the discharging chamber 24 is a cylindrical cavity with an open upper part, and its inner diameter is larger than the outer diameter of the moving grinding head 21 and the inner diameter of the static grinding head 22, so as to ensure that the soymilk slurry formed by grinding between the outer wall of the moving grinding head 21 and the inner wall of the static grinding head 22 can flow downward along the outer wall of the moving grinding head 21 or the inner wall of the static grinding head 22 into the discharging chamber 24. The discharging chamber 24 includes a liquid outlet 241, and the extending direction of the liquid outlet 241 is the tangent direction of the circular area formed by the second-direction rotation scanning of the discharging impeller 23, so that when the discharging impeller 23 rotates in the second direction to discharge the slurry, the soymilk can smoothly discharge from the liquid outlet 241 under the action of the centrifugal force generated by the agitation of the discharging impeller 23.

[0039] Please refer to Figure 1 As shown, the liquid outlet 241 is connected to both the boiling barrel 3 and the hopper 1. A valve 4 for switching the connection between the liquid outlet 241 and the hopper 1 or the boiling barrel 3 is provided on the path connecting the liquid outlet 241 with the hopper 1 and the boiling barrel 3. That is, the liquid flowing out of the liquid outlet 241 can be selectively discharged into the crushing chamber through the hopper 1 for repeated grinding or discharged into the boiling barrel 3. When the valve 4 is switched to connect the liquid outlet 241 with the circulation pipe 41, the soymilk is discharged into the hopper 1 through the circulation pipe 41 and flows into the crushing chamber for circulating grinding; when the valve 4 is switched to connect the liquid outlet 241 with the drain pipe 42, the hot water or soymilk is discharged into the boiling barrel 3 through the drain pipe 42.

[0040] Please refer to Figure 3 As shown, the gap between the outer contour of the discharging impeller 23 and the inner side surface of the discharging chamber 24 is 0.4 - 0.5 mm, preferably 0.45 mm; the gap between the lower end surface of the impeller 23 and the inner bottom surface of the discharging chamber 24 is 0.4 - 0.6 mm, preferably 0.5 mm. Please refer toFigure 4 and Figure 5 As shown in Figure 5 and Figure 4 , when the slurry discharge impeller 23 rotates in the first direction, hot water is discharged, and when it rotates in the second direction, ground soy milk is discharged. In this embodiment, as shown by the arrow directions in Figure 4 and Figure 5 , the rotation direction is the second direction rotation. It can be understood that the second direction rotation and the first direction rotation are relative, and it does not limit that clockwise or counterclockwise in a certain specific perspective is the second direction rotation. Further, the slurry discharge impeller 23 is configured such that its liquid discharge capacity when rotating in the second direction is greater than its liquid discharge capacity when rotating in the first direction. The so-called liquid discharge capacity when rotating in the second direction being greater than the liquid discharge capacity when rotating in the first direction specifically means that when the rotational speed output by the motor 25 is the same, the force driving the liquid flow of the slurry discharge impeller 23 rotating in the second direction is greater than the force driving the liquid flow of the slurry discharge impeller 23 rotating in the first direction. In this embodiment, the slurry discharge impeller 23 realizes the above functions through the following structure. The slurry discharge impeller 23 includes an impeller main body 231 and a plurality of blades 232 extending outward from the impeller main body 231, and the spiral direction of the blades 232 outward from the impeller main body 231 is consistent with the spiral direction when the slurry discharge impeller 23 rotates in the second direction. In this embodiment, there are 4 blades 232 evenly distributed on the impeller main body 231. Please refer to Figure 5 As shown in Figure 5 , the spiral direction of the blades 232 is as shown by the dotted line L in the figure, which is consistent with the second direction rotation direction. The blades 232 formed in this way have a relatively steep front side and a relatively gentle rear side when rotating in the second direction, and the front side is the surface for pushing the liquid flow, so the driving force provided when rotating in the second direction is relatively large; when it rotates in the first direction, the relatively gentle rear side becomes the front side, and the relatively steep front side becomes the rear side, and the liquid easily flows away from the relatively gentle surface, so the driving force provided by the blades 232 at this time is relatively small.

[0041] In this embodiment, since the hot water discharged when the slurry discharge impeller 23 rotates in the first direction is clear water with good fluidity, it can be discharged by rotating in the first direction with a small driving force; while the soy milk slurry formed after the material is ground has an increased viscosity and a decreased fluidity, so it needs to be discharged by rotating in the second direction with a large driving force. By setting the slurry discharge impeller 23 in this way, the requirements for draining water when rotating in the first direction and discharging slurry when rotating in the second direction can be satisfied simultaneously.

[0042] Please refer to Figure 2 、 Figure 3 and Figures 6 to 8 ​​​​As shown, it shows the structure of the dynamic and static grinding heads 21 and 22 cooperating for grinding. Specifically, the static grinding head 22 is cylindrical, and the dynamic grinding head 21 is located inside the cylindrical static grinding head 22. A number of static grinding teeth 221 are provided on the inner wall of the static grinding head 22. The dynamic grinding head 21 includes a cylindrical fine grinding portion 212 and a feeding portion 213 protruding upward from the upper end surface of the fine grinding portion 212. A number of dynamic grinding teeth 211 are provided on the outer wall of the fine grinding portion 212. The feeding portion 213 includes at least two arc-shaped protrusions. A wedge-shaped feeding area 201 is formed between the side wall of the arc-shaped protrusion and the inner wall of the static grinding head 22. The extending direction of the wedge-shaped feeding area 201 from the narrow end to the open end of the wedge is consistent with the rotation direction when the dynamic grinding head 21 rotates in the second direction. The second rotation direction is as shown by the arrow in Figure 7 . In this way, when the dynamic grinding head 21 rotates in the second direction, the material can be spirally introduced from the open end to the narrow end of the wedge-shaped feeding area 201 and ground and crushed between the dynamic grinding teeth 211 and the static grinding teeth 221. When the dynamic grinding head 21 rotates in the first direction, the material will be pushed by the other side of the arc-shaped protrusion opposite to the feeding area 201 to rotate synchronously with the dynamic grinding head 21 and will not be spirally introduced into the feeding area 201, so grinding and crushing cannot be achieved. In this embodiment, the width dimension of the feeding area 201 is gradually changed from 5 mm to 0.35 mm, that is, the dimension of the wedge-shaped feeding area 201 from the open end to the narrow end is gradually changed from 5 mm to 0.35 mm.

[0043] Furthermore, a connecting boss 214 is provided between the at least two arc-shaped protrusions. A blanking area 202 is provided between the side wall of the connecting boss 214 and the inner wall of the static grinding head 22. The blanking area 202 is communicated with the feeding area 201. The connecting boss 214 is rectangular, and the height of the connecting boss 214 protruding from the upper end surface of the fine grinding portion 212 is lower than the height of the arc-shaped protrusion protruding from the upper end surface of the fine grinding portion 212. The setting of the blanking area 202 can better guide the material into the feeding area 201 for grinding and crushing. The dimension of the widest part of the blanking area 202 is set to be 11 - 13 mm.

[0044] Further, a material blocking ring 26 is also installed above the static grinding head 22, and material blocking tabs 261 are provided on the material blocking ring 26. The material blocking tabs 261 are used to prevent materials such as soybean materials from being extruded and overflowing or bursting out during the process of extrusion and crushing. The material blocking tabs 261 are arranged to protrude upward from the edge of the material blocking ring 26, and the material blocking tabs 261 are arranged with one end higher and the other end lower, so that a wedge-shaped area is formed between the material blocking tabs 261 and the horizontal plane where the opening of the static grinding head 22 is located. The direction from wide to narrow of this wedge-shaped area is consistent with the direction of the second rotation of the dynamic grinding head 21 for grinding pulp. Such an arrangement can guide materials such as soybean materials to be gradually pressed downward, avoiding shoveling the materials above the material blocking tabs 261 at the beginning when the material blocking tabs 261 contact the materials, so that the material pressing function cannot be realized.

[0045] Please refer to again Figures 1 to 3 As shown, the connection relationship of the soybean milk machine provided by an embodiment of the present invention is as follows: The slurry discharge impeller 23 is placed in the slurry discharge chamber 24. The static grinding head 22 is fixed on the slurry discharge chamber 24 through the first screw 271. The slurry discharge chamber 24 is fixed on the motor 25 through the second screw 272. The dynamic grinding head 21 is placed in the static grinding head 22. The output shaft 251 of the motor 25 passes through the slurry discharge chamber 24, the slurry discharge impeller 23 and the dynamic grinding head 21 from bottom to top. The dynamic grinding head 21 is fixed on the output shaft 251 through the third screw 273. The slurry discharge impeller 23 is locked and connected to the dynamic grinding head 21 through the cooperation of an embedded nut and a screw; the material blocking ring 26 is located above the static grinding head 22, the hopper 1 is located above the material blocking ring 26, and the lower part of the hopper 1 is communicated with the dynamic and static grinding heads 21 and 22; the liquid outlet 241 of the slurry discharge chamber 24 is connected to the hopper 1 and the cooking barrel 3 through the valve 4; the motor 25 and the heating device on the cooking barrel 3 are connected to the controller, and the work is controlled by the controller.

[0046] The working process is as follows: Put the soaked soybeans, the material to be processed, into the hopper 1, and introduce the purified water heated in the water tank 5 into the hopper 1 to preheat the soybeans in the hopper 1; Start the motor 25 to drive the slurry discharge impeller 23 and the moving grinding head 21 to rotate in the first direction. At the same time, open the pipeline between the liquid outlet 241 and the cooking barrel 3. The hot water after preheating the soybeans in the hopper 1 flows into the slurry discharge chamber 24 along the gap between the moving and static grinding heads 21 and 22, and is driven by the slurry discharge impeller 23 rotating in the first direction in the slurry discharge chamber 24 to be discharged from the liquid outlet 241 into the cooking barrel 3; Close the connection of the pipeline between the liquid outlet 241 and the cooking barrel 3, and open the connection between the liquid outlet 241 and the hopper 1 through the circulation pipe 41. Start the motor 25 to drive the slurry discharge impeller 23 and the moving grinding head 21 to rotate in the second direction to grind the soybeans into soybean milk slurry. The soybean milk slurry flows into the slurry discharge chamber 24 along the gap between the moving and static grinding heads 21 and 22, and is driven by the slurry discharge impeller 23 rotating in the second direction in the slurry discharge chamber 24 to be discharged from the liquid outlet 241 into the hopper 1 for circulating grinding. During the circulating grinding process, the hot water in the water tank 5 can be added to the hopper 1 multiple times. Repeat this process until the slurry meets the preset requirements; While the grinding device 2 is grinding, the hot water in the cooking barrel 3 is also heated to the set temperature and kept warm for standby; Open the pipeline between the liquid outlet 241 and the cooking barrel 3, and the slurry discharge impeller 23 rotates in the second direction to discharge the slurry that meets the preset requirements into the cooking barrel 3. After mixing with the hot water, continue heating to realize the boiling of soybean milk, that is, the pulping process is completed.

[0047] From the description of the specific embodiments above, it can be seen that for the easy-to-clean soybean milk machine provided by the present invention, since in the cooking barrel 3, the hot water is first heated to the set temperature and kept warm, and then continues to be heated and boiled after the soybean milk is mixed with the hot water; in this way, the initial temperature during the boiling of soybean milk is increased, the boiling time of soybean milk is reduced, so that the soybean milk is not easy to stick to the pot during the boiling process, and the cooking barrel 3 is easy to clean.

[0048] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An easy-to-clean soymilk machine, comprising a hopper, a crushing chamber, a slurry discharging chamber, a soymilk boiling barrel and a controller; a crushing device is arranged in the crushing chamber, the crushing device includes a moving grinding head and a stationary grinding head, a slurry discharging impeller is arranged in the slurry discharging chamber, and the moving grinding head and the slurry discharging impeller rotate coaxially; It is characterized in that: The hopper is in fluid communication with the slurry discharging chamber via the crushing chamber, and the slurry discharging chamber is in fluid communication with the soymilk boiling barrel; The crushing device is configured to crush soybeans into soymilk only when the moving grinding head rotates in the second direction; The slurry discharging impeller is configured to first rotate in the first direction to output the hot water after preheating the soybeans in the hopper into the soymilk boiling barrel, and then rotate in the second direction opposite to the first direction to output the soymilk formed by crushing the soybeans into the soymilk boiling barrel to be mixed with the hot water; Wherein, the slurry discharging impeller is configured such that its liquid discharging capacity when rotating in the second direction is greater than its liquid discharging capacity when rotating in the first direction. The slurry discharging impeller includes an impeller main body and a plurality of blades extending outward from the impeller main body. The spiral direction of the blades outward from the impeller main body is consistent with the spiral direction when the slurry discharging impeller rotates in the second direction. When rotating in the second direction, the front side of the blade is relatively steep and the rear side is relatively gentle; The soymilk boiling barrel is adapted to keep the hot water at a set temperature and boil after the soymilk and the hot water are mixed; Wherein, a material blocking ring is installed above the stationary grinding head, and material blocking tabs are provided on the material blocking ring. The material blocking tabs protrude upward from the edge of the material blocking ring and are arranged with one end high and one end low, so that a wedge-shaped area is formed between the material blocking tabs and the horizontal plane where the opening of the stationary grinding head is located. The direction from wide to narrow of this wedge-shaped area is consistent with the direction of grinding the soymilk when the moving grinding head rotates in the second direction.

2. The easy-to-clean soymilk machine according to claim 1, It is characterized in that, The easy-to-clean soymilk machine includes a water tank, the water tank is in fluid communication with the hopper, and the water tank is configured to heat and transport purified water into the hopper to preheat the soybeans to form the hot water, or heat and transport purified water into the hopper to be mixed with the soybeans for warm grinding.

3. The easy-to-clean soymilk machine according to claim 1, It is characterized in that, The slurry discharging chamber includes a liquid outlet connected to the soymilk boiling barrel, and the extending direction of the liquid outlet is the tangent direction of the circular area formed by the second-direction rotation scan of the slurry discharging impeller.

4. The easy-to-clean soymilk machine according to claim 3, It is characterized in that, The liquid outlet is also connected to the hopper, and a valve for switching the connection between the liquid outlet and the hopper or the soymilk boiling barrel is provided on the path where the liquid outlet is connected to the hopper and the soymilk boiling barrel. The soymilk flowing out of the liquid outlet can be selectively discharged into the crushing chamber through the hopper for repeated grinding or discharged into the soymilk boiling barrel for boiling.

5. The easy-to-clean soymilk machine according to any one of claims 1 to 4, It is characterized in that, The static grinding head is cylindrical, the dynamic grinding head is located inside the cylindrical static grinding head, several static grinding teeth are provided on the inner wall of the static grinding head, the dynamic grinding head includes a fine grinding part in the shape of a cylinder and a feeding part protruding upward from the upper end face of the fine grinding part, several dynamic grinding teeth are provided on the outer wall of the fine grinding part, the feeding part includes at least two arc-shaped convex blocks, a wedge-shaped feeding area is formed between the side wall of the arc-shaped convex block and the inner wall of the static grinding head, and the extending direction of the wedge-shaped feeding area from the narrow end to the opening end of the wedge is consistent with the rotation direction when the dynamic grinding head rotates in the second direction.

6. The easy-to-clean soybean milk machine according to claim 5, characterized in that the width dimension of the feeding area is gradually changed from 5 mm to 0.35 mm.

7. The easy-to-clean soybean milk machine according to claim 5, characterized in that a connecting boss is further provided between the at least two arc-shaped convex blocks, a blanking area is provided between the side wall of the connecting boss and the inner wall of the static grinding head, and the blanking area is communicated with the feeding area.

8. The easy-to-clean soybean milk machine according to claim 7, characterized in that the connecting boss is rectangular, and the height of the connecting boss protruding from the upper end face of the fine grinding part is lower than the height of the arc-shaped convex block protruding from the upper end face of the fine grinding part.

9. The easy-to-clean soybean milk machine according to any one of claims 1 to 4, characterized in that the gap between the outer contour of the slurry discharging impeller and the inner side surface of the slurry discharging chamber is 0.4 - 0.5 mm, and the gap between the lower end surface of the slurry discharging impeller and the inner bottom surface of the slurry discharging chamber is 0.4 - 0.6 mm.

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