Crusher crushing disc

Abstract

The present invention belongs to the technical field of pulverizers, and specifically relates to a pulverizing disk of a pulverizer, comprising a moving disk and a stationary disk, which keep relative rotation with each other, and are coaxial with each other. A through hole for axial feeding is arranged at the axis center of the stationary disk, and a raised cone is arranged at the axis center of the moving disk near the end face of the stationary disk, which causes the material to move radially outward. A plurality of moving gear rings distributed in a concentric circle are arranged at the end face of the moving disk near the stationary disk, and the plurality of moving gear rings are distributed equidistantly in the radial direction, and a plurality of moving blade teeth are arranged on the moving gear ring, and moving blade grooves are arranged between the moving blade teeth. A plurality of stationary gear rings distributed in a concentric circle are arranged at the end face of the stationary disk near the moving disk, and the plurality of stationary gear rings are distributed equidistantly in the radial direction, and a plurality of stationary blade teeth are arranged on the stationary gear ring, and stationary blade grooves are arranged between the stationary blade teeth. The plurality of moving gear rings extend to the corresponding two adjacent stationary gear rings, and the stationary blade grooves and the moving blade grooves form a labyrinth discharge channel along the radial direction, so that the fineness of the pulverization is high and the pulverization effect is good.

Description

Technical Field

[0001] The invention belongs to the technical field of pulverizers, and in particular relates to a pulverizing disc of a pulverizer. Background Art

[0002] A pulverizer is a machine that crushes large particles and large sizes of materials into small particles and small sizes. Pulverizers are widely used in industries, mining, agriculture or food processing.

[0003] The application of grinders in the agricultural or food processing industries is generally to grind grains, such as rice food processing, which is used to grind rice into rice flour and prepare rice flour foods. In this field, the existing grinding equipment is generally a stone mill or a grinding wheel mill, and the grinding of rice mainly relies on grinding. The fineness of rice grinding is poor, and the particle size is different. A large amount of water is also required in the production. After the production is completed, wastewater is generated, causing pollution and waste of water resources. In addition, after grinding, it will be mixed with malignant impurities such as gravel, affecting the quality. There are also blade-type grinding equipment, which has a small grinding surface, a short residence time of rice in the equipment, a poor grinding effect, a low fineness of rice grinding, and a low grinding efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a crushing disk for a crusher with high crushing fineness and good crushing effect in view of the above-mentioned defects.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0006] A pulverizing disk of a pulverizer comprises a moving disk and a stationary disk, wherein the moving disk and the stationary disk are kept in relative rotation, the moving disk and the stationary disk are coaxial, a through hole for axial feeding is arranged at the axis center of the stationary disk, a raised frustum is arranged at the axis center of the moving disk near the end face of the stationary disk to promote the material to move radially outward, a plurality of moving gear rings are arranged at the end face of the moving disk near the stationary disk in a concentric circle shape, the plurality of moving gear rings are equidistantly distributed in the radial direction, a plurality of moving cutter teeth are arranged on the moving gear ring, and moving cutter grooves are arranged between the moving cutter teeth The moving knife grooves of two adjacent moving gear rings are not on the same diameter line. The end surface of the stationary disc close to the moving disc is provided with a plurality of concentrically distributed stationary gear rings. The plurality of stationary gear rings are evenly distributed in the radial direction. The stationary gear rings are provided with a plurality of stationary knife teeth. There are stationary knife grooves between the stationary knife teeth. The stationary knife grooves of two adjacent stationary gear rings are not on the same diameter line. The moving gear ring and the stationary gear ring are coaxial. The plurality of moving gear rings extend to the corresponding two adjacent stationary gear rings. The stationary knife grooves and the moving knife grooves form a labyrinth discharge channel along the radial direction.

[0007] Preferably, the radial single-side spacing between the moving blade teeth and the stationary blade teeth is 20-30 um.

[0008] Preferably, the single-side spacing between the moving blade teeth and the stationary blade teeth in the radial direction is 25-30 um.

[0009] Preferably, the front end faces of the moving teeth are all in the same plane parallel to the end face of the moving disk, and the front end faces of the moving teeth are 2-3mm away from the end face of the static disk. The front end faces of the static teeth are all in the same plane parallel to the end face of the static disk, and the front end faces of the static teeth are 2-3mm away from the end face of the moving disk.

[0010] Preferably, a through-hole is provided at the axis center of the frustum, and the height of the frustum is lower than the movable cutter teeth.

[0011] Preferably, the inner diameter of the through hole is larger than the outer diameter of the maximum part of the cone, the outer diameter of the maximum part of the cone is smaller than the inner diameter of the innermost movable gear ring, and a material holding cavity for holding materials is formed between the innermost movable gear ring and the cone.

[0012] Preferably, the center line of the movable blade groove has an angle with the radial direction of the movable disc.

[0013] Preferably, the moving blade teeth and the stationary blade teeth are conical teeth or trapezoidal teeth. Along the axial direction, the radial thickness of the moving blade teeth decreases from the moving blade disc to the outside, and the radial thickness of the stationary blade teeth decreases from the stationary blade disc to the outside. The structures of the moving blade teeth and the stationary blade teeth cooperate with each other.

[0014] Preferably, the moving blade teeth and the stationary blade teeth are helical teeth, and along the rotation direction of the moving disc, the moving blade teeth and the stationary blade teeth are inclined to one side by 8-13 degrees.

[0015] Preferably, the bottom surfaces of the movable knife groove and the stationary knife groove are arc-shaped, the bottom surface of the movable knife groove is not connected to the end surface of the movable plate, and the bottom surface of the stationary knife groove is not connected to the end surface of the stationary plate.

[0016] The beneficial effects of the present invention are: by adopting the above scheme,

[0017] 1. The crushing disc has multiple concentrically distributed crushing surfaces, with a large actual crushing area, high material crushing fineness, high crushing quality, good effect, and high crushing efficiency;

[0018] 2. The material stays in the crushing disk for a long time, and the material is crushed more times per unit time, which improves the crushing effect;

[0019] 3. The crushing disc exerts extrusion and shearing effects on the material, which improves the crushing fineness, makes the crushing uniform, and has high crushing quality;

[0020] 4. It has the advantages of energy saving and environmental protection, and has broad application prospects;

[0021] 5. The moving and stationary teeth of the crushing disc have high structural strength, strong fatigue resistance and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the coordination state of the moving disk and the static disk in Example 1 of the present invention.

[0024] Figure 2 This is a schematic diagram of the structure of the moving disk in Example 1 of the present invention.

[0025] Figure 3 It is a schematic diagram of the explosion structure at the joint of the moving disk and the static disk in Example 1 of the present invention.

[0026] Figure 4 It is a front view of a Lingjing plate in one embodiment of the present invention.

[0027] Figure 5 It is a schematic diagram of the cross-sectional structure of the joint between the moving disk and the static disk in Example 1 of the present invention.

[0028] Figure 6 It is a partial enlarged schematic diagram of the matching position of the moving blade teeth and the stationary blade teeth in Example 1 of the present invention.

[0029] Figure 7 It is a partially enlarged schematic diagram of the stationary knife groove in Example 1 of the present invention.

[0030] Figure 8 It is a stereoscopic diagram of the static disk in Example 2 of the present invention.

[0031] Fig. 9 This is a front view of the moving disk in Example 4 of the present invention.

[0032] Among them: 1 is a moving disc, 11 is a moving gear ring, 12 is a moving cutter tooth, 13 is a moving cutter groove, 14 is a frustum, 15 is a matching hole,

[0033] 2 is a stationary disc, 21 is a stationary gear ring, 22 is a stationary blade tooth, 23 is a stationary blade groove, and 24 is a through hole. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] Example 1: Reference Figure 1 A crushing disk of a pulverizer includes a moving disk 1 and a stationary disk 2. The moving disk 1 and the stationary disk 2 are coaxial. The moving disk 1 is assembled on a rotary shaft. The rotary shaft is connected with a rotary drive device. The moving disk 1 performs a circular rotary motion, and the stationary disk 2 does not move. The moving disk 1 and the stationary disk 2 maintain relative rotation. Figure 3 , a through hole 24 for axial feeding is provided at the axis center of the static disk 2, and the axial direction of the dynamic disk 1 and the static disk 2 is the front-to-back direction, referring to Figure 2The end face of the moving disc 1 close to the static disc 2 is the rear end face of the moving disc 1, and the end face of the static disc 2 close to the moving disc 1 is the front end face of the static disc 2. The rear end face of the moving disc 1 is provided with two moving gear rings 11 distributed in a concentric circle shape. The two moving gear rings 11 are distributed equidistantly along the radial direction. The moving gear rings 11 are provided with a plurality of moving cutter teeth 12. There is a moving cutter groove 13 between two adjacent moving cutter teeth 12. The moving cutter grooves 13 of the two adjacent moving gear rings 11 are not on the same diameter line. Figure 4 The front end surface of the static disk 2 is provided with two concentrically distributed static gear rings 21, and the two static gear rings 21 are equidistantly distributed along the radial direction. A plurality of static knife teeth 22 are provided on the static gear rings 21, and a static knife groove 23 is provided between two adjacent static knife teeth 22. The static knife grooves 23 of two adjacent static gear rings 21 are not on the same diameter line. The movable gear ring 11 and the static gear ring 21 are coaxial. Figure 5 , the movable gear ring 11 extends to the stationary gear ring 21, that is, in the radial direction, the movable gear ring 11 and the stationary gear ring 12 form an alternate distribution structure. Preferably, the outer diameter of the stationary gear ring 21 is larger than the outer diameter of the movable gear ring 11, that is, after the movable disk 1 and the stationary disk 2 are matched, the outer stationary gear ring 21 is at the outermost side, and a raised cone 14 is provided at the axial center of the rear end surface of the movable disk 1 to promote the material to move radially outward. A material accommodating cavity for accommodating the material is formed between the cone 14 and the innermost movable gear ring 11, and the stationary knife groove 22 and the movable knife groove 12 form a labyrinth discharge channel along the radial direction.

[0036] Specifically, refer to Figure 5The inner diameter of the through hole 24 is larger than the maximum outer diameter of the cone 14. After the moving disc 1 and the stationary disc 2 cooperate, the through hole 24 forms an axial feeding port, and the material enters the material holding chamber from the feeding port. Under the action of the cone 14, the material is forced to move radially outward, and moves outward through the moving knife groove 12 and the stationary knife groove 22, that is, moves outward along the labyrinth discharge channel. In the process of moving along the discharge channel, the material is sheared and crushed by the relatively rotating moving knife teeth 12 and the stationary knife teeth 22. The rotating speed of the moving disc 1 is high, and the material is sheared and squeezed quickly. The material is crushed more thoroughly and the crushing effect is better. Multiple crushing surfaces are formed between the moving gear ring 11 and the stationary gear ring 12, and the crushing area is increased. At the same time, the labyrinth discharge channel reduces the material movement speed, prolongs the time for the material to be sheared and crushed, and the number of times the material is crushed is greatly increased, and the crushing is more thorough. The bottom improves the fineness of grinding, greatly improves the effect and quality of grinding. The grinding disk is particularly suitable for the grinding of cereals (rice, wheat, millet, etc.), with high grinding fineness. More importantly, the cereal powder after grinding is not mixed with gravel, abrasive particles and other malicious impurities, and the obtained cereal powder has high cleanliness, purity and quality. Compared with the existing cereal grinding equipment, the grinding fineness of the grinding disk is higher, especially when grinding rice, it is more water-saving than the existing equipment, with multiple grinding surfaces, large actual grinding area, and a high number of times the material is sheared and crushed. Within the same grinding time, the grinding fineness is high, the quality is good, the grinding efficiency is improved by at least 33%, and the energy consumption is less, which has the obvious advantages of energy saving and consumption reduction. In addition, no wastewater and waste are generated during the grinding, and it also has the advantages of environmental protection and emission reduction. Compared with the existing grinding equipment, it has a broader application prospect and obvious advantages.

[0037] Furthermore, in order to improve the fineness of the crushing and ensure the quality of the crushing, refer to Figure 6 The radial single-side spacing of the moving blade teeth 12 and the static blade teeth 22 is 20-30um. Preferably, the radial single-side spacing of the moving blade teeth 12 and the static blade teeth 22 is 25um. The front end faces of the moving blade teeth 12 are all on the same plane parallel to the rear end face of the moving disk 1, and the front end face of the moving blade teeth 12 is 2mm away from the front end face of the static disk 2. The front end faces of the static blade teeth 22 are all on the same plane parallel to the front end face of the static disk 2, and the front end face of the static blade teeth 22 is 2mm away from the rear end face of the moving disk. With this structural setting, the end faces of the static blade teeth 22 and the moving blade teeth 12 are regular, which is convenient for the matching of the moving disk 1 and the static disk 2, and is convenient for controlling the matching gap. The spacing setting can make the material pass through in an orderly manner, thereby improving the crushing quality. It is particularly suitable for rice crushing, which allows rice grains to be sorted and pass through in an orderly manner, thereby improving the crushing quality.

[0038] Specifically, refer to Figure 7The bottom surfaces of the movable knife groove 13 and the stationary knife groove 23 are arc-shaped, and the two sides of the bottom surface of the movable knife groove 13 are smoothly connected with the side walls of the two adjacent movable knife teeth, and the two sides of the bottom surface of the stationary knife groove 23 are smoothly connected with the side surfaces of the two adjacent stationary knife teeth, and the bottom surface of the movable knife groove 13 is not connected with the rear end surface of the movable disk 1. Preferably, the lowest point of the bottom surface of the movable knife groove 13 is 2-3mm away from the rear end surface of the movable disk 1, and the bottom surface of the stationary knife groove 23 is not connected with the front end surface of the stationary disk 2. Preferably, the lowest point of the bottom surface of the stationary knife groove 33 is 2-3mm away from the front end surface of the stationary disk 2. This structure enhances the strength of the knife teeth, so that the knife teeth can be used for a long time without breaking, enhances the fatigue resistance of the knife teeth, and prolongs the service life. The arc groove promotes the support effect of the movable gear ring 11 and the stationary gear ring 21 of the movable disk 1 and the stationary disk 2 is better, and the structural strength of the knife teeth is higher.

[0039] Specifically, refer to Figure 2 , Figure 5 In order to increase the contact area between the moving blade teeth 12 and the stationary blade teeth 22 and increase the crushing area, the moving blade teeth 12 and the stationary blade teeth 22 are designed as conical teeth or trapezoidal teeth. Along the front-to-back direction, the radial thickness of the moving blade teeth 12 decreases from front to back, and the radial thickness of the stationary blade teeth 22 decreases from back to front. At the same time, the structures of the moving blade teeth 12 and the stationary blade teeth 22 keep matching each other, so that the crushing surface is regular. The conical teeth or trapezoidal teeth make the crushing surface a conical surface, thereby increasing the crushing area and improving the crushing effect. At the same time, this structure also improves the structural strength of the moving blade teeth 12 and the stationary blade teeth 22, so that they have a longer service life.

[0040] Specifically, in order to facilitate the assembly of the moving disk 1, a through matching hole 15 is provided at the axis center of the cone 14, and a keyway is provided on the hole wall of the matching hole 15 for easy assembly and matching. In addition, the height of the cone 14 is lower than the moving cutter teeth 12, and the maximum outer diameter of the cone 14 is smaller than the inner diameter of the innermost moving gear ring 11. The structure of the cone 14 increases the volume of the material holding cavity and can temporarily buffer materials. At the same time, it has the functions of speeding up, increasing pressure and stabilizing pressure, so that the material moves quickly to the discharge channel at a high speed, so that the material has a certain speed and pressure when entering the crushing surface, thereby improving the crushing effect, continuously feeding the crushing surface, ensuring the continuous and stable supply of materials on the crushing surface, improving the efficiency of crushing, and the crushing efficiency of the crushing disk is high.

[0041] The stationary gear ring 21 and the stationary disc 2 are integrally formed, and the movable gear ring 11 and the movable disc 1 are integrally formed, which is convenient for production and processing. The movable disc 1 and the stationary disc 2 have high structural precision and long service life.

[0042] Embodiment 2: The difference between this embodiment and embodiment 1 is that, referring to Figure 8In this embodiment, the movable blade teeth 12 and the stationary blade teeth 22 are helical teeth. The movable blade teeth 12 are inclined 8-13 degrees in the clockwise direction, and the stationary blade teeth 22 are inclined 8-13 degrees in the counterclockwise direction. Under the same rotation speed, the actual crushing area is greatly increased, the crushing effect and quality are significantly improved, and the crushing efficiency is improved.

[0043] Embodiment 3: The difference between this embodiment and embodiment 1 is that, referring to Figure 8 In this embodiment, the movable blade teeth 12 are inclined 8-13 degrees in the clockwise direction. Under the condition of the same rotation speed, the actual crushing area is increased, thereby improving the crushing effect and quality and improving the crushing efficiency.

[0044] Embodiment 4: The difference between this embodiment and embodiment 1 is that, referring to Fig. 9 In this embodiment, the center line of the moving knife groove 13 has an angle with the radial direction of the moving disc 1, which forces the movement direction of the material to change, causing the material to be "retained", increasing the number of times the material is sheared and squeezed, significantly improving the effect and quality of the crushing, and thus greatly improving the efficiency of the crushing.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A crushing disk of a crusher, comprising a moving disk and a stationary disk, characterized in that: The moving disk and the static disk are kept in relative rotation, the moving disk and the static disk are coaxial, a through hole for axial feeding is provided at the center of the static disk, a raised cone for causing the material to move radially outward is provided at the center of the moving disk near the end face of the static disk, the moving disk is provided with a plurality of concentrically distributed moving gear rings at the end face near the static disk, the plurality of moving gear rings are equidistantly distributed radially, a plurality of moving blade teeth are provided on the moving gear ring, a moving blade groove is provided between the moving blade teeth, and the moving blade grooves of two adjacent moving gear rings are not on the same diameter line, the static disk is provided with a plurality of concentrically distributed static gear rings at the end face near the moving disk, the plurality of static gear rings are equidistantly distributed radially, a plurality of static blade teeth are provided on the static gear ring, a static blade groove is provided between the static blade teeth, and the static blade grooves of two adjacent static gear rings are not on the same diameter line, the moving gear ring and the static gear ring are coaxial, the plurality of moving gear rings extend to the corresponding two adjacent static gear rings, the static blade grooves 、 The moving knife groove forms a radial labyrinth-like discharge channel; The center line of the moving knife groove has an angle with the radial direction of the moving disc; The moving blade teeth and the stationary blade teeth are helical teeth, and along the rotating direction of the moving disc, the moving blade teeth and the stationary blade teeth are inclined to one side by 8-13 degrees; The groove bottom surfaces of the movable knife groove and the stationary knife groove are arc-shaped, the groove bottom surface of the movable knife groove is not connected to the end surface of the movable plate, and the groove bottom surface of the stationary knife groove is not connected to the end surface of the stationary plate.

2. The crushing disk of the crusher according to claim 1, characterized in that: The single-side spacing between the moving blade teeth and the stationary blade teeth in the radial direction is 20-30um.

3. The crushing disk of the crusher according to claim 2, characterized in that: The single-edge spacing between the moving blade teeth and the stationary blade teeth in the radial direction is 25-30um.

4. The crushing disk of the crusher according to claim 1, characterized in that: The front end faces of the moving teeth are all in the same plane parallel to the end face of the moving disk, and the front end faces of the moving teeth are 2-3mm away from the end face of the static disk. The front end faces of the static teeth are all in the same plane parallel to the end face of the static disk, and the front end faces of the static teeth are 2-3mm away from the end face of the moving disk.

5. The crushing disk of the crusher according to claim 1, characterized in that: A through-going matching hole is arranged at the axis center of the frustum, and the height of the frustum is lower than the movable cutter teeth.

6. The crushing disk of the crusher according to claim 1, characterized in that: The inner diameter of the through hole is larger than the outer diameter of the maximum part of the cone, and the outer diameter of the maximum part of the cone is smaller than the inner diameter of the innermost movable gear ring. A material holding cavity for holding materials is formed between the innermost movable gear ring and the cone.

7. The crushing disk of the crusher according to claim 1, characterized in that: The moving blade teeth and the stationary blade teeth are conical teeth or trapezoidal teeth. Along the axial direction, the radial thickness of the moving blade teeth decreases from the moving blade disc to the outside, and the radial thickness of the stationary blade teeth decreases from the stationary blade disc to the outside. The structures of the moving blade teeth and the stationary blade teeth cooperate with each other.

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