A circulating wet pulverizer

Abstract

This invention relates to a circulating wet pulverizer, comprising a circular cavity and a central rotating shaft. The circular cavity is characterized by the following components arranged sequentially along its central axis: a hopper, a screw feeder, a water distribution ring, a guide shearing plate, shearing blades, a cutter disc, and a filter screen. A top cover plate is connected to the top of the circular cavity, and an inner ring is provided inside the top cover plate. Multiple guide vanes are provided on the inner ring. A cutter disc conical ring is located near the outer edge of the cutter disc. This conical ring can change the direction of material splashed by centrifugal force, causing the material to move obliquely upwards along the tangent of the conical ring's inclined wall and collide with the inner wall of the inner ring. Material with higher kinetic energy is guided by the arc-shaped structure of the guide vanes, changing its direction of motion, and falls back onto the cutter disc for collision and cutting. Material with lower kinetic energy slides down the inner wall of the inner ring to the filter screen below for sieving and filtration. This process is repeated multiple times to form a circulating pulverizer.

Description

Technical Field

[0001] This invention belongs to the field of food processing technology and relates to a circulating wet pulverizer. Background Technology

[0002] In the food machinery industry, especially for the wet grinding of beans, the structure of a wet disc grinder is basically a sealed circular cavity. The disc rotates at high speed, cutting and colliding with the material flowing in from the central hole to achieve the purpose of grinding. However, after the material hits the disc once, under the action of strong centrifugal force, it flies towards the inner wall of the cavity instantly, without multiple collisions and cuts with the disc. Most of the material and water flow down the inner wall of the cavity after surface tension and fluid impact, flowing towards the filter screen. Only a small amount of material rebounds and is repeatedly collided and cut by the disc. This results in the material not meeting the required fineness and being uneven. It can even cause the material to accumulate at the bottom of the inner cavity wall and generate heat through friction with the disc, damaging the nutritional structure of the material. Summary of the Invention

[0003] The purpose of this invention is to provide a circulating wet pulverizer that can solve the problems mentioned in the background art.

[0004] According to the technical solution provided by the present invention: a circulating wet pulverizer includes a circular cavity and a central rotating shaft, characterized in that: a hopper, a screw feeder, a water distribution ring, a guide shearing plate, shearing blades, a cutter disc, and a filter screen are sequentially arranged on the central axis of the circular cavity; the screw feeder, shearing blades, and cutter disc are mounted on the rotating shaft; a top cover plate is connected to the top of the circular cavity by an adjustable self-locking buckle, and an inner cavity ring is provided on the inner side of the top cover plate cavity; multiple guide vanes are provided on the inner side of the inner cavity ring, distributed in an equally divided circle, the guide vanes are arc-shaped, smoothly transitioning with the inner cavity ring, the radius of curvature of the arc surface becoming smaller and smaller, extending into the top of the cutter disc; the cutter disc is close to the outer... A cone-shaped cutter ring is installed along the edge, forming a certain angle with the cutter disc. This angle changes the direction of the material splashed by centrifugal force, causing the material to move obliquely upwards along the tangent of the cone-shaped cutter ring and collide with the inner wall of the inner ring, sliding into the arc surface of the guide vane. Material with higher kinetic energy is guided by the arc surface structure of the guide vane, changing its direction of motion, and falls back onto the cutter disc for collision and cutting. Material with lower kinetic energy slides down the inner wall of the inner ring to the filter screen below for screening and filtration. This process is repeated multiple times to form a cyclic crushing process. The variation range of the arc surface curvature radius of the guide vane can appropriately sort the size of the material particles. The greater the variation range, the fewer material particles are guided.

[0005] Preferably, the cutter disc is vertically provided with a toothed blade, the teeth of which rise in a stepped manner from the center along the radial direction; the material moves outward from the center under the action of centrifugal force, colliding with the teeth of the toothed blade in sequence and being cut step by step; the cutting teeth on the cutter disc are horizontally arranged to cut the scattered material, and are distributed at an angle alternately with the toothed blade.

[0006] Preferably, the spiral grooves of the spiral feeder are evenly spaced along the circumference to provide quantitative feeding. The depth and width of the spiral grooves are adjustable according to production requirements. A water distribution ring is provided on the outside of the spiral feeder. The water distribution ring is concentrically installed on the outside of the cavity of the upper cover plate to cooperate with the spiral feeder for feeding and to support the flange of the lower end of the connecting hopper.

[0007] Preferably, the above-mentioned guide shear plate is a circular plate concentrically installed inside the cavity of the upper cover plate, with multiple holes evenly distributed around the circumference. The holes are circular or irregularly shaped, and the size of the holes is suitable for the material to pass through. The shearing blades are below the above-mentioned circular plate. The material flow with extrusion force formed by the high-speed rotation of the screw feeder flows down through the holes of the above-mentioned circular plate. The shearing blades perform high-speed shearing on the material to achieve the purpose of fragmenting the material.

[0008] Preferably, the aforementioned water distribution ring has multiple water channels on its inner and outer diameters. The water channels on the inner diameter lead to the screw feeder, ensuring smooth and uniform material feeding. The water channels on the outer diameter are connected to multiple water pipes, which are located on the outer side of the upper cover plate, corresponding to the inner and outer sides of the inner ring diameter. The water channels on the inner side of the inner ring provide flowability for the crushing of the blade disc inside the cavity, while the water channels on the outer side flow out through the annular water groove and fine holes at the lower edge of the inner ring or through the gap between the inner ring and the filter screen, serving to cool the material and provide flowability for the material on the filter screen.

[0009] Preferably, each blade of the cutter disc is provided with a material-pushing blade, and multiple material-pushing blades are arranged in a spiral shape below the cutter disc. Under high-speed rotation, the material-pushing blades push the material on the filter screen towards the center, increasing the filtration area and filtration speed, and preventing the material from accumulating at the outer edge of the filter screen. A shovel is provided below the blade at the end of the spiral shape, which shovels the material that has not been filtered out from the filter screen back into the cutter disc under high-speed rotation, so that the material is crushed again.

[0010] Preferably, based on the characteristics of the material to be crushed, the aforementioned guiding shear plate is replaced with a fixed toothed disc, which is concentrically installed inside the upper cover cavity. The inner ring of the fixed toothed disc is in the shape of cylindrical teeth. The aforementioned shearing blade is replaced with a movable toothed disc, which is set on the cutter disc. The outer circle of the movable toothed disc is conical, and the small end is a spiral feeder. The conical surface has grooves with gradually shallower depths from the small end to the large end, and the grooves are consistent with the direction of rotation (counter-clockwise left-hand rotation) to cooperate with the inner ring of the fixed toothed disc to crush the material.

[0011] The circulating wet pulverizer provided by this invention has the following advantages:

[0012] 1. By changing the direction of the material splashed by centrifugal force through the cone ring of the cutter disc, the material runs obliquely upward along the tangent of the inclined wall of the cone ring of the cutter disc. Guided by the arc surface of the guide plate, the material with greater kinetic energy falls back onto the cutter disc for collision and cutting; the material with less kinetic energy slides down the inner wall of the inner ring to the filter screen below for screening and filtration. This process is repeated many times to form a cycle of crushing, resulting in better and more uniform material fineness.

[0013] 2. The teeth of the blade rack rise in a stepped manner from the center along the radial direction; the material moves outward from the center under the action of centrifugal force, colliding with the teeth of the blade rack in turn and being cut step by step, so as to ensure the uniformity and fineness of the material after cutting.

[0014] 3. Unfiltered material is scraped back into the cutter head for collision cutting under the action of the shovel blades below the cutter disc and rotates at high speed.

[0015] 4. The variation range of the arc surface curvature radius of the guide vane can appropriately sort the size of material particles; the greater the variation range, the fewer material particles are guided. If finer crushing is required, the variation range of the arc surface curvature radius of the guide vane can be reduced, allowing more material to be guided and cut again by the cutter head. Attached Figure Description

[0016] Figure 1 This is a front view of the invention (the arrows on the water pipes in the figure indicate the direction of water flow).

[0017] Figure 2 This is a schematic diagram of the material guidance provided by the cutter head cone ring and guide vanes of the present invention (the arrows in the diagram indicate the flow direction of the material).

[0018] Figure 3 This is a schematic diagram showing the spiral distribution of the feed plates of the present invention.

[0019] Figure 4 This is a schematic diagram of the shovel blade of the present invention.

[0020] Figure 5 This is a schematic diagram of the flow guide plate of the present invention (the arrows in the diagram indicate the flow direction of the material).

[0021] In the diagram: 1. Circular cavity; 11. Filter screen; 12. Guide vane; 13. Adjustable self-locking buckle; 14. Top cover plate; 15. Water pipe; 16. Material guide shearing plate; 17. Screw feeder; 18. Hopper; 19. Shearing blade; 20. Cutter disc; 21. Inner cavity ring; 22. Rotating shaft; 23. Hopper flange; 24. Material pusher; 25. Cutter disc cone ring; 26. Shovel blade; 27. Cutter rack; 28. Water distribution ring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] like Figures 1-5 As shown, this invention is a circulating wet pulverizer, comprising a circular cavity 1 and a central rotating shaft 22. The circular cavity 1 is characterized by the following components arranged sequentially along its central axis: a hopper 18, a screw feeder 17, a water distribution ring 28, a guide shear plate 16, shearing blades 19, a cutter disc 20, and a filter screen 11; the screw feeder 17, shearing blades 19, and cutter disc 20 are mounted on the rotating shaft 22; an upper cover plate 14 is connected to the top of the circular cavity 1 via an adjustable self-locking buckle 13; an inner ring 21 is provided inside the upper cover plate 14, and multiple guide vanes 12 are provided on the inner side of the inner ring 21, evenly distributed circumferentially. The guide vanes 12 are arc-shaped, smoothly transitioning with the inner ring 21, with the radius of curvature of the arc surface decreasing progressively, extending into the cutter disc 20. The cutter disc 20 has a cone ring 25 near its outer edge. The cone ring 25 is at a certain angle to the cutter disc 20, which can change the direction of the material splashed by centrifugal force. The material runs obliquely upward along the tangent of the inclined wall of the cone ring 25 and collides with the inner wall of the inner cavity ring 21, sliding into the arc surface of the guide plate 12. The material with greater kinetic energy is guided by the arc surface structure of the guide plate 12, and its movement direction is changed. It falls back onto the cutter disc 20 for collision and cutting. The material with less kinetic energy slides down the inner wall of the inner cavity ring 21 to the filter screen 11 below for screening and filtration. This process is repeated many times to form a cycle of crushing. The range of variation of the radius of curvature of the arc surface of the guide plate 12 can appropriately sort the size of the material particles. The greater the range of variation, the fewer material particles are guided.

[0025] Material grading is achieved by using the arc-shaped structure of the guide vane 12: materials with higher kinetic energy fall back to the cutter head 20 after collision, achieving further crushing and cutting, thus improving the uniformity of material crushing and the crushing efficiency; materials with lower kinetic energy slide onto the filter screen for screening and filtration, thus achieving rapid grading of coarse and fine materials.

[0026] Preferably, the cutter disc 20 is vertically equipped with a toothed blade 27, the teeth of which rise in a stepped manner radially from the center. Under centrifugal force, the material moves outward from the center, colliding with the teeth of the toothed blade 27 and being cut step by step. The cutting teeth on the cutter disc 20 are horizontally arranged to cut scattered material and are distributed at an alternating angle with the toothed blade 27. This ensures the collision cutting utilization rate and crushing efficiency of the cutter disc teeth.

[0027] Preferably, the spiral feeder 17 has multiple spiral grooves evenly spaced along the circumference to serve as quantitative feeding lines. The depth and width of the spiral grooves are adjusted according to production requirements. A water distribution ring 28 is provided on the outer side of the spiral feeder 17. The water distribution ring 28 is concentrically installed on the outer side of the cavity of the upper cover plate 14 to cooperate with the spiral feeder for feeding and to support the lower end of the hopper flange 23 of the connecting hopper 18.

[0028] Preferably, the guide shear plate 16 is a circular plate concentrically installed inside the cavity of the upper cover plate 14, with multiple holes evenly distributed around the circumference. The holes are either circular or irregularly shaped, and the size of the holes is suitable for the material to pass through. The shearing blade 19 is below the circular plate. The material flow with extrusion force generated by the high-speed rotation of the screw feeder 17 flows down through the holes of the circular plate. The shearing blade 19 performs high-speed shearing on the material to achieve the purpose of fragmenting the material, so that the material is initially crushed before being cut by the cutter disc 20.

[0029] Preferably, the water distribution ring 28 has multiple water channels on its inner and outer diameters. The water channels on the inner diameter lead to the screw feeder 17, ensuring smooth and uniform material feeding. The water channels on the outer diameter are connected to multiple water pipes 15. The water pipes 15 are located on the outer side of the cavity of the upper cover plate 14, corresponding to the inner and outer sides of the diameter of the inner ring 21. The water channels on the inner side of the inner ring 21 provide flowability for the crushing of the blade disc in the cavity. The water channels on the outer side flow out through the annular water groove and fine holes at the lower edge of the inner ring 21 or through the gap between the inner ring 21 and the filter screen 11, for cooling and providing flowability for the material on the filter screen.

[0030] Preferably, each blade of the cutter disc 20 is provided with a material-pushing blade 24 evenly distributed below it, and the multiple material-pushing blades 24 are arranged in a spiral shape below the cutter disc 20. Under high-speed rotation, the material-pushing blades 24 push the material on the filter screen 11 towards the center, increasing the filtration area and filtration speed, and preventing the material from accumulating at the outer edge of the filter screen 11. A shovel blade 26 is provided below the blade at the end of the spiral shape, which shovels the unfiltered material on the filter screen 11 back into the cutter disc 20 under high-speed rotation, so that the material is crushed again.

[0031] Preferably, based on the characteristics of the material to be crushed, the aforementioned guiding shear plate 16 is replaced with a fixed toothed disc, which is concentrically installed inside the cavity of the upper cover plate 14. The inner ring of the fixed toothed disc is in the shape of a columnar tooth. The aforementioned shearing blade 19 is replaced with a moving toothed disc, which is set on the cutter disc 20. The outer circle of the moving toothed disc is conical, and the small end side is a spiral feeder 17. The conical surface has oblique teeth with gradually shallower grooves from the small end to the large end, and the grooves are consistent with the direction of rotation (counterclockwise leftward rotation) to cooperate with the inner ring of the fixed toothed disc to crush the material.

[0032] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A circulating wet pulverizer, comprising a circular cavity (1) and a central rotating shaft (22), characterized in that: The circular cavity (1) is arranged in sequence along its central axis as follows: hopper (18), screw feeder (17), water distribution ring (28), guide shear plate (16), shearing blade (19), cutter disc (20), and filter screen (11); the screw feeder (17), shearing blade (19), and cutter disc (20) are mounted on a rotating shaft (22); the top of the circular cavity (1) is connected to a top cover plate (14) via an adjustable self-locking buckle (13), and the inner side of the top cover plate (14) is provided with an inner cavity ring (21), and multiple guide vanes (12) are provided on the inner side of the inner cavity ring (21), which are evenly distributed in a circle. The guide vanes (12) are arc-shaped and smoothly transition with the inner cavity ring (21). The radius of curvature of the arc surface becomes smaller and smaller, extending into the top of the cutter disc (20); the cutter disc (20) is close to A cone ring (25) is provided at the outer edge. The cone ring (25) is at a certain angle to the cutter disc (20). This can change the direction of the material splashed by centrifugal force, so that the material runs obliquely upward along the tangent of the inclined wall of the cone ring (25) and collides with the inner wall of the inner cavity ring (21) and slides into the arc surface of the guide plate (12). The material with greater kinetic energy is guided by the arc surface structure of the guide plate (12), and its movement direction changes. It falls back onto the cutter disc (20) for collision and cutting. The material with less kinetic energy slides down the inner wall of the inner cavity ring (21) to the filter screen (11) below for screening and filtration. This is repeated many times to form a cycle of crushing. The range of change of the radius of curvature of the arc surface of the guide plate (12) can appropriately sort the size of the material particles. The greater the range of change, the fewer material particles are guided.

2. The circulating wet pulverizer as described in claim 1, characterized in that: The cutter head (20) is vertically provided with a toothed rack (27), and the teeth of the toothed rack (27) are raised in a stepwise manner from the center along the radial direction. Under the action of centrifugal force, the material moves outward from the center and collides with the teeth of the toothed rack (27) in turn and is cut step by step. The cutting teeth on the cutter head (20) are horizontally arranged to cut the scattered material and are distributed at an angle to the toothed rack (27).

3. The circulating wet pulverizer as described in claim 1, characterized in that: The spiral groove of the above-mentioned screw feeder (17) is divided into multiple grooves along the circumference, which serve as quantitative feeding. The depth and width of the spiral groove are adjusted according to the production demand. A water distribution ring (28) is provided on the outside of the screw feeder (17). The water distribution ring (28) is concentrically installed on the outside of the cavity of the upper cover plate (14) to cooperate with the screw feeder for feeding, and at the same time supports the lower end of the connecting hopper (18) flange (23).

4. The circulating wet pulverizer as described in claim 1, characterized in that: The above-mentioned guide shear plate (16) is a circular plate with multiple holes evenly distributed around the circumference, which is concentrically installed inside the cavity of the upper cover plate (14). The holes are either circular or irregularly shaped, and the size of the holes is suitable for the material to pass through. The shearing blade (19) is below the above-mentioned circular plate. The material flow with extrusion force formed by the high-speed rotation of the screw feeder (17) flows down through the holes of the above-mentioned circular plate. The shearing blade (19) performs high-speed shearing on the material to achieve the purpose of fragmenting the material.

5. A circulating wet pulverizer as described in claim 1, characterized in that: The above-mentioned water distribution ring (28) has multiple water channels on its inner and outer diameters. The water channel on the inner diameter leads to the screw feeder (17), so that the material is fed smoothly and evenly. The water channel on the outer diameter is connected to multiple water pipes (15). The water pipes (15) are set on the outer side of the cavity of the upper cover plate (14), corresponding to the inner and outer sides of the diameter of the inner cavity ring (21). The water channel on the inner side of the inner cavity ring (21) is used to provide fluidity for the crushing of the blade disc in the cavity. The water channel on the outer side flows out through the annular water groove and fine hole at the lower edge of the inner cavity ring (21) or the gap between the inner cavity ring (21) and the filter screen (11), which is used to cool down and provide fluidity for the material on the filter screen.

6. The circulating wet pulverizer as described in claim 1, characterized in that: The cutter disc (20) is provided with material-pushing blades (24) evenly distributed below each blade. Multiple material-pushing blades (24) are arranged in a spiral shape below the cutter disc (20). Under high-speed rotation, the material-pushing blades (24) push the material on the filter screen (11) towards the center, increasing the filtration area and filtration speed, and preventing the material from accumulating at the outer edge of the filter screen (11). A shovel (26) is set below the blade at the end of the spiral shape. Under high-speed rotation, the material that has not been filtered out on the filter screen (11) is shoveled back into the cutter disc (20), so that the material is crushed again.

7. A circulating wet pulverizer as described in claim 1, characterized in that: According to the characteristics of the material to be crushed, the above-mentioned guide shear plate (16) is changed into a fixed toothed disc, which is concentrically installed inside the cavity of the upper cover plate (14). The inner ring of the fixed toothed disc is in the shape of a column tooth. The above-mentioned shearing blade (19) is changed into a moving toothed disc, which is set on the cutter disc (20). The outer circle of the moving toothed disc is in the shape of a cone, and the small end side is a spiral feeder (17). The cone surface has grooves with gradually shallower depths from the small end to the large end, and the grooves are consistent with the rotation direction (counterclockwise left rotation) to cooperate with the inner ring of the fixed toothed disc to crush the material.

Images