Multi-cavity wet-process pulverizer

Abstract

The invention relates to a multi-cavity wet pulverizer which comprises a circular cavity and a rotating shaft in the center, and a hopper, a spiral feeder, a material guide shearing plate, a shearing blade, a cutterhead and a filter screen are sequentially arranged in a center hole of the circular cavity; and the spiral feeder, the shearing blade and the cutterhead are arranged on the rotating shaft. The upper surface of the circular cavity is connected with an upper cover plate through a fulcrum bolt, circular baffle rings with different diameters are arranged on the inner side of the cavity of the upper cover plate, separation blades with different distances from the center of the cutterhead are arranged on the cutterhead corresponding to the circular baffle rings, and the separation blades on the cutterhead form a dynamic circular ring under high-speed rotation; the diameter of each dynamic circular ring is smaller than that of the corresponding circular baffle ring, and the lower edge of each circular baffle ring is lower than the upper edge of the dynamic circular ring formed by the upper baffle plate of the cutter head, so that materials splashed due to centrifugal force are blocked, the circular baffle rings and the dynamic circular rings form an annular crushing chamber, and a plurality of circular baffle rings and dynamic circular rings form a plurality of annular crushing chambers; the materials are collided and cut for multiple times.

Description

Technical Field

[0001] This invention belongs to the field of food processing technology and relates to a multi-cavity 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 wall and generate heat due to 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 multi-cavity wet pulverizer that can solve the problems mentioned in the background art.

[0004] According to the technical solution provided by the present invention: a multi-cavity wet pulverizer includes a circular cavity and a central rotating shaft, characterized in that: a hopper, a screw feeder, a guide shear plate, a shearing blade, a cutter disc, and a filter screen are sequentially arranged in the central hole of the circular cavity; the screw feeder, shearing blade, and cutter disc are mounted on the rotating shaft; a top cover plate is connected to the top of the circular cavity by a fulcrum bolt, and circular retaining rings of different diameters are provided on the inner side of the top cover plate cavity; baffles at different distances from the center of the cutter disc are provided on the cutter disc corresponding to the aforementioned circular retaining rings; the baffles on the cutter disc form a dynamic ring under high-speed rotation, the diameter of the dynamic ring being smaller than the diameter of the corresponding circular retaining ring, and the lower edge of the circular retaining ring being lower than the upper edge of the dynamic ring formed by the baffles on the cutter disc, thus blocking the material splashed by centrifugal force, thereby forming an annular pulverizing chamber; multiple corresponding circular retaining rings and dynamic rings form multiple annular pulverizing chambers.

[0005] Preferably, the lower edges of the aforementioned circular baffles are staggered at a certain angle, causing the material flow direction to have different diameter coverage, resulting in a wider distribution of material collision and cutting.

[0006] Preferably, the spiral feeder has multiple equally spaced spiral grooves along its circumference, serving as a quantitative feeding mechanism. The depth and width of the spiral grooves are adjustable according to production requirements. A feeding ring is provided on the outer side of the spiral feeder, concentrically installed on the outer side of the cavity of the upper cover plate. This feeding ring works in conjunction with the spiral feeder to create a material flow with a certain compressive force, while simultaneously supporting the lower flange of the connecting hopper.

[0007] Preferably, the above-mentioned material guiding 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 made into circular holes or irregular holes according to the shape characteristics of the material, 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 generated by the high-speed rotation of the screw feeder flows down through the holes of the above-mentioned circular plate, and the shearing blades perform high-speed shearing action on the material to achieve the purpose of fragmenting the material.

[0008] Preferably, an annular water trough is opened on the inner diameter of the feeding ring, and an external water pipe is connected to it to ensure that the material is fed smoothly and evenly; a water pipe tee is installed on the outer diameter of the feeding ring, and water pipes are set at different diameters on the outside of the upper cover plate cavity to introduce water into different crushing chambers, so that the material maintains its fluidity during the crushing process.

[0009] Preferably, the cutter head has an equally divided lobe structure, and the baffles are also equally distributed at different diameters on different lobes to ensure the dynamic balance of the cutter head.

[0010] Preferably, shovels are installed below different blades of the cutter disc to shovel the material that has not been filtered out on the filter screen back into the crushing chamber under high-speed rotation, so that the material is crushed again.

[0011] 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, and the inner ring of the fixed toothed disc is toothed; the aforementioned shearing blade is replaced with a movable toothed disc, which is set on the cutter disc, and the outer circle of the movable toothed disc is obliquely toothed and consistent with the direction of rotation, so as to cooperate with the inner ring of the fixed toothed disc to crush the material. The gap between the movable toothed disc and the fixed toothed disc is adjusted according to the fineness requirements of the initially crushed material.

[0012] The multi-cavity wet pulverizer provided by this invention has the following advantages: 1. Through the shearing of the high-speed rotating shearing blades, the material fragments are made uniform, and after further collision and cutting by the cutter disc, the material is easier to pulverize.

[0013] 2. By setting up multiple annular grinding chambers, the material is blocked multiple times under the action of centrifugal force, and collides and is cut multiple times when it comes into contact with the cutter disc, so as to ensure the uniformity and fineness of the material after cutting.

[0014] 3. Unfiltered material is shoveled back into the grinding chamber for further grinding under the action of the shovels below the different blades of the cutter disc, while rotating at high speed. Attached Figure Description

[0015] Figure 1 This is a front view of the present invention.

[0016] Figure 2 This is a screenshot of the present invention.

[0017] Figure 3 This is a schematic diagram of the cutter head of the present invention.

[0018] Figure 4 This is a schematic diagram of the circular retaining ring of the present invention.

[0019] Figure 5 This is a schematic diagram of the shovel blade of the present invention.

[0020] Figure 6 This is a schematic diagram of the second filter and the second blade disc of the present invention.

[0021] Figure 7 This is a schematic diagram of the fixed gear disk and the moving gear disk of the present invention.

[0022] In the diagram: 1. Circular cavity; 11. Filter screen; 12. Circular retaining ring; 13. Support bolt; 14. Top cover plate; 15. Water pipe; 16. Material guide shearing plate; 17. Screw feeder; 18. Hopper; 19. Shearing blade; 20. Cutter disc; 21. Baffle plate; 22. Rotating shaft; 23. Feed ring; 24. Shovel blade. The arrows in the diagram indicate the direction of material flow. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0024] 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.

[0025] like Figure 1-7As shown, this invention is a multi-cavity wet pulverizer, comprising a circular cavity 1 and a central rotating shaft 22. A hopper 18, a screw feeder 17, a guide shear plate 16, shearing blades 19, a cutter disc 20, and a filter screen 11 are sequentially arranged in the central hole of the circular cavity 1. The screw feeder 17, shearing blades 19, and cutter disc 20 are mounted on the rotating shaft 22. A top cover plate 14 is connected to the top of the circular cavity 1 via fulcrum bolts 13. Circular retaining rings 12 of different diameters are provided on the inner side of the top cover plate 14. The cutter disc 20... On the cutter disc 20, baffles 21 are positioned at different distances from the center of the circular baffle ring 12. Under high-speed rotation, the baffles 21 on the cutter disc 20 form a dynamic ring. The diameter of this dynamic ring is smaller than the diameter of the corresponding circular baffle ring 12, and the lower edge of the circular baffle ring 12 is lower than the upper edge of the dynamic ring formed by the baffles 21 on the cutter disc 20. This helps to block material splashed by centrifugal force, thus forming an annular grinding chamber. Multiple corresponding circular baffle rings 12 and dynamic rings form multiple annular grinding chambers. By setting multiple annular grinding chambers, the material is repeatedly blocked under centrifugal force, resulting in multiple collisions and cuts upon contact with the cutter disc 20, ensuring the uniformity and fineness of the cut material. A shovel 24 is positioned below the cutter disc 20 to scoop up any unfiltered material.

[0026] Material is quantitatively fed through the screw feeder 17 with a certain amount of extrusion pressure. It flows down through the holes of the guide shear plate 16 and is sheared by the high-speed rotating shear blades 19 below the guide shear plate 16. The blades can be made into double or multiple blades. After the material is sheared into fragments, it flows into the cutter disc 20 and is collided and cut. Under the centrifugal force generated by the high-speed rotation of the cutter disc 20, the material fragments fly out along the upper edge of the first dynamic ring and splash onto the first corresponding circular retaining ring 12. Most of the material particles flow down along the inner wall of the first circular retaining ring 12 and fall onto the rotating cutter disc 20 again. After colliding and being cut by the cutter disc 20, they fly towards the cutter disc. The material forms a dynamic ring with the second baffle 21 on the cutter disc 20; then it splashes along the upper edge of the second dynamic ring and splashes onto the second corresponding circular baffle 12. This repeated collision and cutting continues until the material flies out of the dynamic ring formed by the baffle 21 at the last maximum diameter of the cutter disc 20. The material is splashed onto the corresponding last maximum diameter circular baffle 12, and then flows down along the inner wall of the last circular baffle 12 into the filter screen 11. Material smaller than the filter screen is filtered out of the chamber, while material larger than the filter screen accumulates on the filter screen 11 and is scooped up again by the shovel 24 below the cutter disc 20 and enters the grinding chamber for further grinding.

[0027] To achieve a finer particle size, a second filter screen and a second cutter disc can be installed on the rotating shaft 22 inside the chamber, forming a two-chamber or multi-chamber grinding structure (e.g., Figure 6 ).

[0028] Preferably, the lower edges of the aforementioned circular baffle rings 12 are staggered at a certain angle, causing the material flow direction to have different diameter coverage, resulting in a wider distribution of material collision and cutting.

[0029] Preferably, the spiral feeder 17 has multiple spiral grooves evenly spaced along its circumference, serving as a quantitative feeding mechanism. The depth and width of the spiral grooves are adjustable according to production requirements. A feeding ring 23 is provided on the outer side of the spiral feeder 17, which is concentrically installed on the outer side of the upper cover plate 14. This feeding ring 23 works in conjunction with the spiral feeder to feed the material, creating a material flow with a certain compressive force, while also supporting the lower flange of the connecting hopper 18.

[0030] Preferably, the aforementioned guiding shear plate 16 is a circular plate concentrically installed inside the cavity of the upper cover plate 14, with multiple holes evenly distributed around its circumference. The holes are either circular or irregularly shaped according to the material's shape, and the size of the holes is suitable for the material to pass through. The shearing blade 19 is located 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, and the shearing blade 19 performs high-speed shearing on the material to achieve the purpose of fragmenting the material. Depending on the characteristics of the material being crushed, the aforementioned guiding shear plate 16 can be changed to a fixed toothed disc, concentrically installed inside the cavity of the upper cover plate 14, with the inner ring of the fixed toothed disc having a toothed shape; the aforementioned shearing blade 19 can be changed to a movable toothed disc, set on the cutter disc 20, with the outer ring of the movable toothed disc having an oblique toothed shape and aligned with the rotation direction, to cooperate with the inner ring of the fixed toothed disc to crush the material. The gap between the movable toothed disc and the fixed toothed disc is adjusted according to the fineness requirements of the initially crushed material (see...). Figure 7 ).

[0031] Preferably, an annular water groove is opened on the inner diameter of the feeding ring 23, and an external water pipe is connected to it to ensure that the material is fed smoothly and evenly; a water pipe tee is installed on the outer diameter of the feeding ring 23, and water pipes 15 are set at different diameters on the outer side of the upper cover plate 14 to introduce water into different crushing chambers, so that the material maintains fluidity during the crushing process.

[0032] Preferably, the cutter head 20 has an equally divided lobe structure, and the baffles 21 are also equally distributed at different diameters on different lobes to ensure the dynamic balance of the cutter head.

[0033] 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 multi-cavity wet attritor comprising a circular cavity (1) and a central rotating shaft (22), characterized in that: The circular cavity (1) has a central hole in which a hopper (18), a screw feeder (17), a guide shear plate (16), a shearing blade (19), a cutter disc (20), and a filter screen (11) are arranged in sequence. The screw feeder (17), the shearing blade (19), and the 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) by a fulcrum bolt (13). The inner side of the top cover plate (14) is provided with circular retaining rings (12) of different diameters. The cutter disc (20) has corresponding circular retaining rings. The ring (12) is equipped with baffles (21) at different distances from the center of the cutter disc. The baffles (21) on the cutter disc (20) form a dynamic ring under high-speed rotation. The diameter of the dynamic ring is smaller than the diameter of the corresponding circular baffle (12). The lower edge of the circular baffle (12) is lower than the upper edge of the dynamic ring formed by the baffles (21) on the cutter disc (20), which plays a blocking role against the material splashed by centrifugal force. In this way, the two form an annular crushing chamber. Multiple corresponding circular baffles (12) and dynamic rings form multiple annular crushing chambers.

2. A multi-cavity wet media mill as claimed in claim 1, characterized in that: The lower edges of the aforementioned circular baffles (12) are staggered at a certain angle, causing the material flow direction to be covered by different diameters, resulting in a wider distribution of material collision and cutting.

3. A multi-cavity wet media mill as claimed in claim 1, wherein: 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 feeding ring (23) is provided on the outside of the screw feeder (17). The feeding ring (23) is concentrically installed on the outside of the cavity of the upper cover plate (14) to cooperate with the screw feeder to feed the material, so that the material becomes a material flow with a certain extrusion force, while supporting the lower flange of the connecting hopper (18).

4. A multi-cavity wet media mill as defined in claim 1, wherein: 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 according to the material's shape characteristics. The size of the holes should be such that the material can pass through. The shearing blade (19) is located below the above-mentioned circular plate. The material flow with extrusion force formed by the high-speed rotation of the spiral 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 breaking the material.

5. A multi-cavity wet media mill as claimed in claim 3, wherein: An annular water trough is opened on the inner diameter of the feeding ring (23), and a water pipe is connected to it to ensure that the material is fed smoothly and evenly. A water pipe tee is installed on the outer diameter of the feeding ring (23), and water pipes (15) are set at different diameters on the outside of the upper cover plate (14) cavity to introduce water into different crushing chambers so that the material remains fluid during the crushing process.

6. A multi-cavity wet media mill as claimed in claim 1, wherein: The cutter head (20) has an equally divided lobe structure, and the baffles (21) are also equally distributed at different diameters on different lobes to ensure the dynamic balance of the cutter head.

7. A multi-cavity wet media mill as defined in claim 1, wherein: The blades (20) are equipped with shovels (24) below the different blades. Under high-speed rotation, the material that has not been filtered out of the filter screen is shoveled back into the crushing chamber, so that the material is crushed again.

8. A multi-cavity 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 toothed. 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 obliquely toothed and is consistent with the rotation direction, so as to cooperate with the inner ring of the fixed toothed disc to crush the material. The gap between the moving toothed disc and the fixed toothed disc is adjusted according to the fineness requirements of the initially crushed material.

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