A multi-chambered step grinders

Abstract

The utility model relates to a kind of multi-cavity grading grinder, comprising: grinder shell, which is separated into first grinding cavity, second grinding cavity and third discharge cavity by the grinding disc and filter screen that are arranged by upper and lower interval in it;Grinding ring is fixed on the grinder shell with filter screen, and it is uniformly distributed with the tapered hole that is communicated with first grinding cavity and second grinding cavity;Cutting blade and shear blade are respectively rotatably installed in second grinding cavity and third discharge cavity, and grinding disc, cutting blade and shear blade are all driven by driving motor;Shear blade is used to shear type crushing for the discharge of second grinding cavity, and the shear part of shear blade is set as sawtooth-shaped shear tooth on the side facing the rotation direction of shear blade, and the lower side of the opposite side is fixedly provided with the stirring plate arranged at an angle with shear part.The utility model can realize cavity grading grinding, accelerate the release of discharge to improve grinding efficiency, enhance grinding fineness, and is suitable for long fiber food grinding.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, specifically to a multi-cavity graded grinding machine. Background Technology

[0002] Grinding equipment uses a grinding ring and rotating grinding disc with grinding blades to cut materials. However, cutting with only the grinding disc and blades results in relatively large particles that easily clog the discharge pipes. Furthermore, the high cutting resistance and delayed discharge further inhibit grinding efficiency. Traditional grinding equipment primarily uses a single-chamber system, mixing materials that meet the cutting requirements with those that don't, grinding them repeatedly until all particles meet the requirements for discharge. However, this method, which relies mainly on extended operation time, has low grinding efficiency and is time-consuming. Therefore, existing grinding equipment incorporates filters to restrict the vertical downward flow of long-fiber materials, combined with cutting blades for horizontal cutting, further accelerating cutting efficiency and reducing particle size. However, long-fiber materials are not always arranged vertically downwards; they can become entangled and piled up, causing blockages at the filter. While filters solve the cutting and grinding problem for long-fiber materials, they also introduce clogging issues.

[0003] Therefore, the research objective of this utility model is to design a multi-cavity graded grinding machine that can perform tiered grinding and accelerate the release of effluent to improve grinding efficiency, enhance grinding fineness, effectively solve clogging problems, and is suitable for grinding and pulverizing long-fiber foods or materials. Utility Model Content

[0004] In view of the technical problems existing in the prior art, the present invention provides a multi-cavity grading grinding machine, which can effectively solve the technical problems existing in the prior art.

[0005] The technical solution of this utility model is: A multi-cavity classifying grinding mill, comprising: The grinding mill housing is divided into a first grinding chamber, a second grinding chamber, and a third discharge chamber by grinding discs and filter screens arranged at intervals from top to bottom. The grinding ring and the filter screen are both fixed on the grinding machine housing, and the grinding ring is sleeved on the outside of the grinding disc. The grinding ring is evenly distributed with conical holes that connect the first grinding chamber and the second grinding chamber. The cutting blade and the shearing blade are rotatably installed in the second grinding chamber and the third discharge chamber, respectively. The grinding disc, the cutting blade, and the shearing blade are all driven synchronously by a drive motor. The shearing blade is used to shear and crush the discharge material in the second grinding chamber. The shearing blade consists of a central mounting part and at least one shearing part arranged around the periphery of the mounting part. The side of the shearing part facing the rotation direction of the shearing blade is provided with serrated shearing teeth, and a stirring plate is fixedly arranged at an angle to the shearing part on the lower side facing away from it.

[0006] The stirring plate is integrally formed by bending the shearing part downwards, and it is inclined on the side opposite to the rotation direction of the shearing blade, forming an inverted L-shaped obtuse angle structure with the shearing part.

[0007] The diameter of the conical holes gradually increases downwards, and the distance between adjacent conical holes is 5.8~7mm.

[0008] The filter screen has a number of filter holes evenly distributed in a ring array, and the diameter of the filter holes is less than 3.6 mm.

[0009] At least one crushing hammer is installed on the grinding disc. The periphery of the grinding disc is sheared and bent to form grinding convex teeth and grinding concave teeth. The crushing hammer, grinding convex teeth and grinding concave teeth are arranged alternately. A pointed cone-shaped grinding cone plate is also sheared and vertically folded upward in the middle of the grinding disc.

[0010] The cutting blade and the shearing blade are set at an angle. The cutting blade consists of a central mounting part and at least one cutting part set around the periphery of the mounting part. The cutting part is a wavy structure with a longitudinal section composed of multiple alternately arranged planar areas and arched areas. Corresponding cutting holes are provided on the planar areas and arched areas. The width of the cutting part gradually decreases from one end of the mounting part outwards, and one side of the blade edge faces the direction of rotation of the cutting blade to form an arc shape.

[0011] The grinding machine housing is composed of an upper housing and a lower housing, which are locked and sealed together by multiple sets of locking bolts. The grinding disc, filter screen, grinding ring, cutting blade and shearing blade are all installed in the lower housing. The upper housing is provided with a feed port that communicates with the first grinding chamber, and the lower housing is provided with a discharge port that communicates with the third discharge chamber.

[0012] Advantages of this utility model: 1) This utility model divides the grinding machine shell into three grinding chambers, and uses grinding discs, grinding rings, cutting blades, filters and shearing blades to grade and cut the materials in the three grinding chambers, so that the materials are cut into different particle sizes in layers, promote the smooth flow of materials, and thus speed up the grinding and crushing efficiency.

[0013] 2) This utility model further adds a shearing blade close to the bottom of the filter screen below the grinding disc, and the shearing part of the shearing blade is set with serrated shearing teeth on the side facing the rotation direction of the shearing blade. The high-speed rotating cutting blade and shearing blade are arranged crosswise above and below the filter screen. After the material passes through the filter screen, it is immediately cut laterally by the shearing blade close to the filter screen, which further shears and crushes the discharge of the second grinding chamber, especially the fibrous material. This ensures the size of the material cut and effectively prevents the entangled material from clogging the filter screen. In addition, an agitator plate is fixedly and inclined below the side of the shearing blade facing away from the rotation direction, which is set at an angle to the shearing part. The agitator plate and the shearing part form an inverted L-shaped obtuse angle structure. When the bent agitator plate rotates at high speed, it can generate a strong outward centrifugal force, which can effectively accelerate the release of the discharge, thereby promoting the flow of materials, avoiding blockage, and further improving the material crushing and grinding efficiency.

[0014] 3) The grinding ring of this utility model has conical holes evenly distributed on it, and the diameter of the conical holes is gradually increased downward. The distance between adjacent conical holes is 5.8~7mm, which can improve the feeding speed while reducing the probability of material jamming, and control the particle size of the material discharged from the first grinding chamber. Furthermore, the filter screen has a filter hole diameter of less than 3.6mm, which effectively controls the material entering the third discharge chamber to be less than the national standard requirement of 4mm. The combination of the two can ensure that the cutting size of the material meets the discharge requirements.

[0015] 4) The cutting blade of this utility model is configured with a longitudinal section of wave-shaped structure composed of multiple sequentially staggered planar areas and arched areas, forming an alternating cutting pattern to reduce the crushing blind area of ​​the second grinding chamber, maximize working efficiency, and thus improve the grinding effect; and the width of the grinding blade gradually decreases from one end of the mounting part outwards, and one side of the blade edge forms an arc shape facing the direction of rotation of the cutting blade to reduce the resistance of the grinding blade rotation and improve the efficiency of rotary cutting.

[0016] 5) The present invention further forms grinding convex teeth and grinding concave teeth by shearing and bending around the periphery of the grinding disc, and the crushing hammer, grinding convex teeth and grinding concave teeth are arranged alternately. The middle part of the grinding disc is also sheared and vertically folded upward to form a pointed cone-shaped grinding cone plate. The grinding convex teeth, grinding concave teeth, crushing hammer and grinding cone plate work together with the grinding ring to cut materials, further improving grinding efficiency and ensuring practical effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 for Figure 2 A cross-sectional diagram.

[0019] Figure 3 for Figure 1An explosion diagram.

[0020] Figure 4 This is a schematic diagram of the shearing blade.

[0021] Figure 5 This is a schematic diagram showing the installation of the shearing blade and filter.

[0022] Figure 6 This is a schematic diagram showing the installation of the cutting blade and filter screen.

[0023] In the attached diagram: grinding machine housing 1, first grinding chamber 101, second grinding chamber 102, third discharge chamber 103, feed inlet 104, discharge outlet 105, grinding disc 2, grinding protruding teeth 201, grinding concave teeth 202, grinding conical plate 203, filter screen 3, filter hole 301, grinding ring 4, conical hole 401, cutting blade 5, flat area 501, arched area 502, cutting round hole 503, shearing blade 6, shearing teeth 601, stirring plate 602, drive motor 7, crushing hammer 8. Detailed Implementation

[0024] To facilitate understanding by those skilled in the art, the structure of this utility model will now be described in further detail with reference to the accompanying drawings: refer to Figure 1-6 A multi-cavity classifying grinding mill, comprising: The grinding machine housing 1 is divided into a first grinding chamber 101, a second grinding chamber 102 and a third discharge chamber 103 by grinding discs 2 and filter screens 3 arranged from top to bottom; Grinding ring 4, the grinding ring 4 and the filter screen 3 are both fixed on the grinding machine housing 1, and the grinding ring 4 is sleeved on the outside of the grinding disc 2. The grinding ring 4 is evenly distributed with conical holes 401 that connect the first grinding chamber 101 and the second grinding chamber 102. Cutting blade 5 and shearing blade 6 are rotatably installed in the second grinding chamber 102 and the third discharge chamber 103, respectively. The grinding disc 2, cutting blade 5 and shearing blade 6 are all driven synchronously by the drive motor 7. The shearing blade 6 is used to shear and crush the discharge material in the second grinding chamber 102. The shearing blade 6 is composed of a central mounting part and at least one shearing part arranged around the periphery of the mounting part. The side of the shearing part facing the rotation direction of the shearing blade 6 is provided with serrated shearing teeth 601, and a stirring plate 602 is fixedly arranged at an angle to the shearing part on the lower side facing away from it.

[0025] This invention divides the grinding mill housing 1 into three grinding chambers, and uses a grinding disc 2, a grinding ring 4, a filter screen 3, a cutting blade 5, and a shearing blade 6 to grade and cut the material in the three grinding chambers, so that the material is cut into different particle sizes step by step, promoting the smooth flow of material and thus accelerating the grinding and pulverizing efficiency.

[0026] The stirring plate 602 is integrally formed by bending the shearing part downwards, and it is inclined on the side opposite to the rotation direction of the shearing blade 6, forming an inverted L-shaped obtuse angle structure with the shearing part.

[0027] This invention further adds a shearing blade 6 below the grinding disc 2, which is closely attached to the bottom of the filter screen 3. The shearing part of the shearing blade 6 is provided with serrated shearing teeth 601 on the side facing the rotation direction of the shearing blade 6. When the shearing blade 6 rotates at high speed, it further shears and crushes the material discharged from the second grinding chamber 102, especially fibrous materials. Furthermore, an agitator plate 602 is fixedly and inclined below the side of the shearing blade 6 facing away from the rotation direction, which is set at an angle to the shearing part. The agitator plate and the shearing part form an inverted L-shaped obtuse angle structure. When the bent agitator plate rotates at high speed, it can generate a strong outward centrifugal force, which accelerates the release of the discharged material and promotes the flow of materials, thereby further improving the material crushing and grinding efficiency.

[0028] The diameter of the tapered hole 401 is gradually increased downwards, and the distance between adjacent tapered holes 401 is 5.8~7mm.

[0029] The filter screen 3 has a plurality of filter holes 301 evenly distributed in a ring array, and the diameter of the filter holes 301 is less than 3.6 mm.

[0030] The grinding ring 4 of this utility model has conical holes 401 evenly distributed on it, and the diameter of the conical holes 401 is gradually increased downward. The distance between adjacent conical holes 401 is 5.8~7mm, which can improve the feeding speed while reducing the probability of material jamming, and control the particle size of the material discharged from the first grinding chamber 101. The filter hole 301 of the filter screen 3 has a diameter of less than 3.6mm, which effectively controls the material entering the third discharge chamber 103 to be less than the national standard requirement of 4mm.

[0031] At least one crushing hammer 8 is installed on the grinding disc 2. The periphery of the grinding disc 2 is sheared and bent to form grinding protrusions 201 and grinding concave teeth 202. The crushing hammer 8, grinding protrusions 201 and grinding concave teeth 202 are arranged alternately. The middle part of the grinding disc 2 is also sheared and vertically folded upward to form a pointed cone-shaped grinding cone plate 203.

[0032] This invention further incorporates grinding protrusions 201 and grinding concave teeth 202 formed by shearing and bending around the periphery of the grinding disc 2. The crushing hammer 8, grinding protrusions 201, and grinding concave teeth 202 are arranged in an alternating manner. A pointed conical grinding cone plate 203 is also sheared and vertically folded upward in the middle of the grinding disc 2. The grinding protrusions 201, grinding concave teeth 202, crushing hammer 8, and grinding cone plate 203 work together with the grinding ring 4 to cut materials, further improving grinding efficiency and ensuring practical effectiveness.

[0033] The cutting blade 5 and the shearing blade 6 are arranged at an angle. The cutting blade 5 consists of a central mounting part and at least one cutting part arranged around the periphery of the mounting part. The cutting part is a longitudinal section with a wave-like structure composed of multiple alternately arranged planar areas 501 and arched areas 502. Each planar area 501 and arched area 502 is provided with a corresponding cutting circular hole 503. The width of the cutting part gradually decreases from one end of the mounting part outwards, and one side of the blade edge faces the direction of rotation of the cutting blade to form an arc shape.

[0034] The cutting blade 5 of this invention is configured with a longitudinal section in a wave-like structure consisting of multiple sequentially staggered planar areas 501 and arched areas 502, forming an alternating cutting pattern to reduce the crushing blind zone of the second grinding chamber, maximize working efficiency, and thus improve the grinding effect. Furthermore, the width of the grinding blade 5 gradually decreases from one end of the mounting part outwards, and one side of the blade edge forms an arc shape facing the rotation direction of the cutting blade 5 to reduce the resistance to rotation of the grinding blade 5 and improve the efficiency of rotary cutting.

[0035] The grinding machine housing 1 is composed of an upper housing and a lower housing, which are locked and sealed together by multiple sets of locking bolts. The grinding disc 2, filter screen 3, grinding ring 4, cutting blade 5 and shearing blade 6 are all installed in the lower housing. The upper housing is provided with a feed port 104 that communicates with the first grinding chamber 101, and the lower housing is provided with a discharge port 105 that communicates with the third discharge 103.

[0036] It should be noted that this embodiment is implemented in the same way as embodiment one in terms of principle and technical effect. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in embodiment one.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A multi-cavity classifying grinding mill, characterized in that, include: The grinding machine housing (1) is divided into a first grinding chamber (101), a second grinding chamber (102) and a third discharge chamber (103) by grinding discs (2) and filter screens (3) arranged from top to bottom. Grinding ring (4), the grinding ring (4) and the filter screen (3) are both fixed on the grinding machine housing (1), and the grinding ring (4) is sleeved on the outside of the grinding disc (2). The grinding ring (4) is evenly distributed with conical holes (401) that connect the first grinding chamber (101) and the second grinding chamber (102). The cutting blade (5) and the shearing blade (6) are rotatably installed in the second grinding chamber (102) and the third discharge chamber (103), respectively. The grinding disc (2), the cutting blade (5) and the shearing blade (6) are all driven synchronously by the drive motor (7). The shearing blade (6) is used to shear and crush the discharge material in the second grinding chamber (102). The shearing blade (6) is composed of a central mounting part and at least one shearing part arranged around the mounting part. The side of the shearing part facing the rotation direction of the shearing blade (6) is provided with serrated shearing teeth (601), and a stirring plate (602) is fixedly arranged at an angle to the shearing part on the lower side facing away from it.

2. The multi-cavity classifying grinding machine according to claim 1, characterized in that, The stirring plate (602) is integrally formed by bending the shearing part downwards, and it is inclined on the side opposite to the rotation direction of the shearing blade (6), forming an inverted L-shaped obtuse angle structure with the shearing part.

3. The multi-cavity classifying grinding machine according to claim 1, characterized in that, The diameter of the conical hole (401) is gradually increased downwards, and the distance between adjacent conical holes (401) is 5.8~7mm.

4. A multi-cavity classifying grinding machine according to claim 1, characterized in that, The filter screen (3) has a number of filter holes (301) evenly distributed in a ring array, and the diameter of the filter holes (301) is less than 3.6 mm.

5. A multi-cavity classifying grinding machine according to claim 1, characterized in that, At least one crushing hammer (8) is installed on the grinding disc (2). The periphery of the grinding disc (2) is sheared and bent to form grinding protrusions (201) and grinding concave teeth (202). The crushing hammer (8), grinding protrusions (201) and grinding concave teeth (202) are arranged alternately. The middle part of the grinding disc (2) is also sheared and vertically folded upward to provide a pointed cone-shaped grinding cone plate (203).

6. A multi-cavity classifying grinding machine according to claim 1, characterized in that, The cutting blade (5) and the shearing blade (6) are arranged at an angle. The cutting blade (5) consists of a mounting part in the middle and at least one cutting part arranged around the mounting part. The cutting part is a longitudinal section with a wave-like structure composed of multiple planar areas (501) and arched areas (502) arranged in sequence. The planar areas (501) and arched areas (502) are provided with corresponding cutting holes (503). The width of the cutting part gradually decreases from one end of the mounting part outwards, and the blade edge faces the direction of rotation of the cutting blade to form an arc shape.

7. A multi-cavity classifying grinding machine according to claim 1, characterized in that, The grinding machine housing (1) is composed of an upper housing and a lower housing, which are locked and sealed together by multiple sets of locking bolts. The grinding disc (2), filter screen (3), grinding ring (4), cutting blade (5) and shearing blade (6) are all installed in the lower housing. The upper housing is provided with a feed port (104) that connects to the first grinding chamber (101), and the lower housing is provided with a discharge port (105) that connects to the third discharge chamber (103).

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