Step-by-step crushing device and method for protein raw material processing

Abstract

The invention discloses a step-by-step crushing device and method for protein raw material processing, and relates to the technical field of protein raw material processing. According to the step-by-step smashing device and method for protein raw material processing, a smashing bin is included, a first smashing roller driven by a motor and a stirring rod driven by the motor are assembled in the smashing bin, a second smashing roller is rotationally connected to the side face of the stirring rod, and a sieve plate is assembled in the smashing bin by arranging bolts; a collecting bin is assembled on the side face of the smashing bin. According to the step-by-step crushing device and method for protein raw material processing, when raw materials which are not completely crushed stay on a sieve plate, the raw materials on the sieve plate can be further completely pushed into a collecting bin in cooperation with a first chain wheel, a chain, a fixed seat, a reciprocating lead screw, a second chain wheel, a movable block, a cleaning brush, a first gear, a toothed bar and a rotating brush; the possibility that the sieve plate is blocked due to long-term use of the device is prevented, and the multi-time crushing efficiency of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of protein raw material processing, and in particular to a step-by-step pulverizing device and method for protein raw material processing. Background Art

[0002] Background technology of the step-by-step pulverizing device for protein raw material processing relates to the technical means of refining and homogenizing protein raw materials in the food processing industry. With the rapid development of the food and feed industry, step-by-step pulverizing technology has become an important means to improve protein extraction efficiency and optimize processing quality.

[0003] However, the existing feed protein raw material crushing device includes a crushing barrel, a plurality of supporting legs are arranged at the bottom of the crushing barrel, an anti-skid pad is arranged at the bottom of the supporting legs, a crushing box is arranged at the top of the crushing barrel, a feeding port is arranged at the top of the crushing box, a first crushing mechanism is arranged in the crushing box, a rotating mechanism and an adjusting mechanism are arranged on both sides of the first crushing mechanism, and a second crushing mechanism is arranged in the crushing barrel. In the above application documents, two crushing rollers are used to perform corresponding crushing operations on the raw materials, and the crushed raw materials are preliminarily screened before performing corresponding secondary crushing operations. When the preliminarily screening is performed for a long time, there is a possibility that some of the raw materials that have not been crushed will block the screen plate, thereby affecting the multiple crushing efficiency of the device. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a step-by-step pulverizing device and method for processing protein raw materials, which solves the problems raised in the above background technology. To achieve the above purpose, the present invention is implemented through the following technical scheme: a step-by-step pulverizing device for processing protein raw materials, comprising a pulverizing bin, wherein the inside of the pulverizing bin is respectively equipped with a pulverizing roller 1 driven by a motor and a stirring rod driven by a motor, the side of the stirring rod is rotatably connected to a pulverizing roller 2, the inside of the pulverizing bin is equipped with a sieve plate by setting bolts, and the side of the pulverizing bin is equipped with a collecting bin; The side of the crushing roller 1 is connected to the sprocket 1, the outer side of the sprocket 1 is equipped with a chain, the inside of the crushing bin is equipped with a fixed seat, the inside of the fixed seat is rotatably connected to a reciprocating screw rod, the side of the reciprocating screw rod is connected to the sprocket 2, the outer side of the reciprocating screw rod is connected to a moving block by setting a thread, the bottom of the moving block is fixedly connected to a cleaning brush, the top of the cleaning brush is rotatably connected to a gear 1, the inner wall of the crushing bin is equipped with a gear rod, the bottom of the gear 1 is connected to a rotating brush, the inside of the crushing bin is equipped with an auxiliary crushing component for crushing raw materials, and the inside of the collecting bin is equipped with a vibration component for sorting residues. Through the setting of the device, the raw materials on the screen plate can be further pushed completely into the collecting bin, preventing the possibility of the screen plate being blocked due to long-term use of the device, and improving the multiple crushing efficiency of the device.

[0005] Preferably, one end of the chain away from the sprocket one is assembled on the outer side of the sprocket two.

[0006] Preferably, the gear rod is located at a side of the gear and is in meshing state with the gear.

[0007] Preferably, the auxiliary crushing assembly includes a hydraulic chamber 1 and a hydraulic chamber 2 mounted on the outside of the reciprocating screw, the inner wall of the hydraulic chamber 1 is slidably connected to a movable plate by setting an elastic telescopic rod, the outer side of the hydraulic chamber 1 is slidably connected to an arc plate, one end of the hydraulic chamber 2 is slidably connected to a force rod 1, the other end of the hydraulic chamber 2 is slidably connected to a gear ring, the bottom of the force rod 1 is equipped with a spring 1, and the side of the crushing roller 2 is fixedly connected to a gear 2. By setting the auxiliary crushing assembly, the secondary crushing effect of the crushing roller 2 on the raw material is improved, thereby improving the use efficiency of the device.

[0008] Preferably, the force-bearing rod 1 is located at the bottom of the arc-shaped plate and is in contact with the arc-shaped plate.

[0009] Preferably, the gear 2 is located at the top of the gear ring and is in meshing state with the gear ring.

[0010] Preferably, the vibration assembly includes a rotating rod rotatably connected to the collection bin, the side of the reciprocating screw is transmission-connected with a bevel gear 1, the top of the rotating rod is fixedly connected with a bevel gear 2, the outer side of the rotating rod is fixedly connected with a turntable, and the outer side of the turntable is fixedly connected with a knocking rod. Through the setting of the vibration assembly, the collection bin and the raw materials therein are vibrated to a certain extent, the raw materials therein are sorted to a certain extent, the raw materials are prevented from piling up in one place, and the storage effect of the collection bin is improved.

[0011] Preferably, the bevel gear 2 is located on the side of the bevel gear 1 and is in meshing state with the bevel gear 2.

[0012] A pulverizing method of a step-by-step pulverizing device for processing protein raw materials, comprising the following steps: Step 1: Start the motor to drive the crushing roller 1 and the stirring rod to rotate rapidly; Step 2: Put the raw material into the crushing bin through the opening at the top of the crushing bin, the raw material is initially crushed by the crushing roller 1, and then screened by the sieve plate; Step 3: The raw material passing through the screen plate is moved to the second crushing roller for secondary crushing, and the raw material after the step-by-step crushing operation is obtained; Step 4: The raw materials that have not passed through the screen plate in step 2 are pushed into the collection bin, and the raw materials are put back into the crushing bin, and steps 2 and 3 are repeated.

[0013] The present invention provides a step-by-step crushing device and method for protein raw material processing. It has the following beneficial effects: (1) For the step-by-step crushing device and method for protein raw material processing, when there are raw materials that have not been completely crushed remaining on the sieve plate, in cooperation with the first sprocket, the chain, the fixed seat, the reciprocating lead screw, the second sprocket, the moving block, the cleaning brush, the first gear, the toothed rod and the rotating brush, the raw materials on the sieve plate can be further completely pushed into the collection bin, preventing the possibility of the device being blocked due to long-term use and improving the multiple crushing efficiency of the device.

[0014] (2) For the step-by-step crushing device and method for protein raw material processing, when the motor is started and drives the first crushing roller to rotate rapidly, the stirring rod driven by the motor rotates together. In cooperation with the first hydraulic chamber, the second hydraulic chamber, the elastic telescopic rod, the movable plate, the arc plate, the first stress rod, the toothed ring, the first spring and the second gear, the second crushing roller rotates synchronously during revolution, improving the secondary crushing effect of the second crushing roller on the raw materials and thus improving the use efficiency of the device.

[0015] (3) For the step-by-step crushing device and method for protein raw material processing, when the reciprocating lead screw is in a rotating state, it can drive the first bevel gear to rotate, causing the first bevel gear to drive the second bevel gear to rotate, the second bevel gear to drive the rotating rod to rotate, the rotating rod to drive the turntable to rotate, and the turntable to drive the knocking rod to rotate, knocking on the inner wall of the collection bin, causing the collection bin and the raw materials inside to vibrate to a certain extent, sorting the raw materials inside to a certain extent, preventing the raw materials from accumulating in one place and improving the storage effect of the collection bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structure diagram of the overall appearance of the present invention; Figure 2 is a three-dimensional structure diagram of the overall cross-section of the present invention; Figure 3 is a three-dimensional structure diagram of some parts of the present invention; Figure 4 is a three-dimensional structure diagram of some parts of the present invention; Figure 5 is a three-dimensional structure diagram of the auxiliary crushing component of the present invention; Figure 6 is of the present invention Figure 5 magnified structure diagram at A in; Figure 7 is a three-dimensional structure diagram of the vibration component of the present invention; Figure 8 is of the present invention Figure 7 magnified structure diagram at B in.

[0017] In the figure: 100, Crushing bin; 200, First crushing roller; 300, Stirring rod; 400, Second crushing roller; 500, Sieve plate; 600, Collection bin; 701, First sprocket; 702, Chain; 703, Fixed seat; 704, Reciprocating lead screw; 705, Second sprocket; 706, Moving block; 707, Cleaning brush; 708, First gear; 709, Rack; 710, Rotating brush; 800, Auxiliary crushing assembly; 801, First hydraulic bin; 802, Second hydraulic bin; 803, Elastic telescopic rod; 804, Movable plate; 805, Arc plate; 806, First stress rod; 807, Ring gear; 808, First spring; 809, Second gear; 900, Vibration assembly; 901, Rotating rod; 902, First bevel gear; 903, Second bevel gear; 904, Turntable; 905, Knocking rod. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] Embodiment 1, please refer to Figures 1-4 , A step-by-step crushing device and method for protein raw material processing, including a crushing bin 100. Inside the crushing bin 100, a first crushing roller 200 driven by a motor and a stirring rod 300 driven by a motor are respectively assembled. The side of the stirring rod 300 is rotatably connected to a second crushing roller 400. The inside of the crushing bin 100 is assembled with a sieve plate 500 by setting bolts. The side of the crushing bin 100 is assembled with a collection bin 600; The side of the first crushing roller 200 is drivingly connected to a first sprocket 701. The outside of the first sprocket 701 is assembled with a chain 702. Inside the crushing bin 100, a fixed seat 703 is assembled. Inside the fixed seat 703, a penetrating reciprocating lead screw 704 is rotatably connected. The side of the reciprocating lead screw 704 is drivingly connected to a second sprocket 705. One end of the chain 702 away from the first sprocket 701 is assembled at the outside position of the second sprocket 705. Start the motor to drive the first crushing roller 200 to rotate rapidly, and then put the raw materials into the crushing bin 100. After the raw materials are initially crushed by the first crushing roller 200, they are screened by the sieve plate 500. The raw materials that are not completely crushed stay on the sieve plate 500. The rapidly rotating first crushing roller 200 drives the first sprocket 701 connected to it to rotate. Cooperating with the chain 702 assembled on the outside of the first sprocket 701, the second sprocket 705 drivingly connected to the first sprocket 701 through the chain 702 rotates rapidly. The second sprocket 705 drives the reciprocating lead screw 704 fixedly connected to it to rotate rapidly.

[0020] A moving block 706 is threadedly connected to the outside of the reciprocating lead screw 704, and a cleaning brush 707 is fixedly connected to the bottom of the moving block 706. When the reciprocating lead screw 704 rotates rapidly, the moving block 706 assembled on the outside of the reciprocating lead screw 704 is restricted by the fixed seat 703 slidably connected thereto, so that the moving block 706 reciprocates horizontally, and the cleaning brush 707 fixed to the bottom of the moving block 706 reciprocates horizontally.

[0021] A first gear 708 is rotatably connected to the top of the cleaning brush 707, and a toothed rod 709 is assembled on the inner wall of the crushing chamber 100. The toothed rod 709 is located on the side of the gear 708 and is in a meshing state with the gear 708. A rotating brush 710 is drivingly connected to the bottom of the first gear 708. When the cleaning brush 707 reciprocates horizontally, the first gear 708 rotatably connected thereto reciprocates horizontally with it. Also, because the first gear 708 is restricted by the toothed rod 709 meshing with it during the movement, the first gear 708 rotates reciprocally during the reciprocating movement, driving the rotating brush 710 drivingly connected to the first gear 708 to rotate reciprocally during the movement, and cleaning the raw materials remaining on the sieve plate 500 into the collection bin 600. The rotating brush 710 in a rotating state can further completely push the raw materials on the sieve plate 500 into the collection bin 600, preventing the possibility of the sieve plate 500 being blocked due to long-term use of the device, and improving the multiple crushing efficiency of the device.

[0022] An auxiliary crushing assembly 800 for crushing raw materials is assembled inside the crushing chamber 100, and a vibration assembly 900 for sorting residues is assembled inside the collection bin 600.

[0023] During use, start the motor to drive the first crushing roller 200 to rotate rapidly. Then, put the raw materials into the crushing bin 100. After the raw materials are initially crushed by the first crushing roller 200, they are screened by the sieve plate 500. The raw materials that are not completely crushed remain on the sieve plate 500. The rapidly rotating first crushing roller 200 drives the first sprocket 701 connected to it by transmission to rotate. Cooperating with the chain 702 assembled outside the first sprocket 701, the second sprocket 705 connected to the first sprocket 701 by the chain 702 rotates rapidly. The second sprocket 705 drives the reciprocating lead screw 704 fixedly connected to it to rotate rapidly. The moving block 706 assembled outside the reciprocating lead screw 704 is restricted by the fixed seat 703 slidably connected to it, so that the moving block 706 reciprocates horizontally. The moving block 706 drives the cleaning brush 707 fixed to its bottom to reciprocate horizontally. And during the reciprocating movement of the cleaning brush 707, the first gear 708 rotatably connected to it also reciprocates horizontally. Also, because the first gear 708 is restricted by the toothed rod 709 meshed with it during the movement, the first gear 708 rotates reciprocally during the reciprocating movement, driving the rotating brush 710 connected to the first gear 708 by transmission to rotate reciprocally during the movement, and cleaning the raw materials remaining on the sieve plate 500 into the collection bin 600.

[0024] Embodiment 2. Please refer to Figures 1-6 , on the basis of Embodiment 1, the auxiliary crushing assembly 800 includes a first hydraulic chamber 801 and a second hydraulic chamber 802 assembled outside the reciprocating lead screw 704. The inner wall of the first hydraulic chamber 801 is slidably connected with a movable plate 804 by arranging an elastic telescopic rod 803. The outside of the first hydraulic chamber 801 is slidably connected with an arc-shaped plate 805. When starting the motor to drive the first crushing roller 200 to rotate rapidly, the stirring rod 300 driven by the motor rotates together. The reciprocating lead screw 704 in the rapid rotation state drives the first hydraulic chamber 801 assembled outside the reciprocating lead screw 704 to rotate rapidly. The movable plate 804 in the first hydraulic chamber 801 is stretched by the elastic telescopic rod 803 and slides in the first hydraulic chamber 801 under the action of centrifugal force, so that the pressure in the first hydraulic chamber 801 increases, driving the arc-shaped plate 805 slidably connected to the first hydraulic chamber 801 to move.

[0025] One end of the second hydraulic chamber 802 is slidably connected with a first stress rod 806. The first stress rod 806 is located at the bottom of the arc-shaped plate 805 and is in contact with the arc-shaped plate 805. The other end of the second hydraulic chamber 802 is slidably connected with a toothed ring 807. When the arc-shaped plate 805 rotates and extends at the same time, it can squeeze the first stress rod 806 and make the first stress rod 806 move downward. Cooperating with the second hydraulic chamber 802 slidably connected to the first stress rod 806, the pressure in the second hydraulic chamber 802 increases, driving the toothed ring 807 slidably connected to the second hydraulic chamber 802 to move upward.

[0026] A first stress rod 806 is assembled with a first spring 808 at the bottom. A second gear 809 is fixedly connected to the side of a second crushing roller 400. The second gear 809 is located at the top of a toothed ring 807 and is in a meshing state with the toothed ring 807. When the toothed ring 807 moves upward to the bottom position of the second gear 809 and is in a meshing state with the second gear 809, the rotating stirring rod 300 drives the second crushing roller 400 rotatably connected thereto to revolve, so that the second crushing roller 400 drives the second gear 809 fixedly connected thereto to revolve. At this time, the second gear 809 is restricted by the toothed ring 807 meshing therewith and rotates on its own while revolving, so that the second crushing roller 400 rotates on its own synchronously while revolving. The secondary crushing effect of the second crushing roller 400 on the raw materials is improved, thereby improving the use efficiency of the device.

[0027] When the reciprocating lead screw 704 stops rotating, the centrifugal force received by the movable plate 804 disappears, and the movable plate 804 can be reset under the action of the elastic telescopic rod 803. Similarly, the arc-shaped plate 805 is reset, the restriction of the arc-shaped plate 805 on the first stress rod 806 disappears, and the first stress rod 806 is reset under the action of the first spring 808. Similarly, the toothed ring 807 is reset. This is convenient for the next activation of the auxiliary crushing assembly 800.

[0028] When in use, on the basis of Example 1, the motor is started to drive the crushing roller 200 to rotate rapidly, and the stirring rod 300 driven by the motor rotates together, and the reciprocating screw 704 in a rapidly rotating state drives the hydraulic chamber 801 assembled on the outside of the reciprocating screw 704 to rotate rapidly. Under the action of centrifugal force, the movable plate 804 in the hydraulic chamber 801 stretches the elastic telescopic rod 803 and slides in the hydraulic chamber 801, so that the pressure in the hydraulic chamber 801 increases, driving the arc plate 805 slidably connected to the hydraulic chamber 801 to move, and the arc plate 805 extends while rotating, thereby squeezing the force-bearing rod 806 and causing the force-bearing rod 806 to move downward, cooperating with the hydraulic chamber 2 802 slidably connected to the force-bearing rod 806, so that the pressure in the hydraulic chamber 2 802 increases, driving the gear ring 807 slidably connected to the hydraulic chamber 2 802 to move upward When the agitator 300 is in motion, the gear ring 807 moves to the bottom position of the gear 2 809 and is in meshing state with the gear 2 809, and the agitator 300 in the rotating state drives the crushing roller 2 400 connected to it for revolution, so that the crushing roller 2 400 drives the gear 2 809 fixedly connected to it for revolution, and the gear 2 809 is restricted by the gear ring 807 meshing with it at this time, and rotates while revolving, so that the crushing roller 2 400 rotates synchronously when revolving; when the reciprocating screw rod 704 stops rotating, the centrifugal force on the movable plate 804 disappears, and the movable plate 804 can be reset under the action of the elastic telescopic rod 803. Similarly, the arc plate 805 is reset, and the restriction of the arc plate 805 on the force-bearing rod 1 806 disappears, so that the force-bearing rod 1 806 is reset under the action of the spring 1 808. Similarly, the gear ring 807 is reset.

[0029] For example 3, please refer to Figures 1-8 On the basis of the first and second embodiments, the vibration assembly 900 includes a rotating rod 901 rotatably connected to the collection bin 600, a bevel gear 1 902 is transmission-connected to the side of the reciprocating screw 704, a bevel gear 2 903 is fixedly connected to the top of the rotating rod 901, and the bevel gear 2 903 is located at the side of the bevel gear 1 902 and is in meshing state with the bevel gear 2 903. When the reciprocating screw 704 is in a rotating state, the bevel gear 1 902 transmission-connected to the reciprocating screw 704 can be driven to rotate, so that the bevel gear 1 902 drives the bevel gear 2 903 meshing with the bevel gear 1 902 to rotate.

[0030] A rotating disk 904 is fixedly connected to the outer side of the rotating rod 901, and a knocking rod 905 is fixedly connected to the outer side of the rotating disk 904. When the bevel gear 903 rotates, the rotating rod 901 fixedly connected to the bevel gear 903 can be driven to rotate, and the rotating rod 901 drives the rotating disk 904 fixedly connected to the rotating rod 901 to rotate, so that the rotating disk 904 drives the knocking rod 905 fixedly connected to the rotating disk 904 and having a certain elasticity to rotate, and the knocking rod 905 can knock the inner wall of the collection bin 600 during the rotation process, so that the collection bin 600 and the raw materials therein generate certain vibrations. The raw materials therein are sorted to a certain extent, and the raw materials are prevented from piling up in one place, thereby improving the storage effect of the collection bin 600.

[0031] When in use, on the basis of Example 1 and Example 2, when the reciprocating screw 704 is in a rotating state, it can drive the bevel gear 902 connected to the reciprocating screw 704 to rotate, so that the bevel gear 902 drives the bevel gear 903 meshing with the bevel gear 902 to rotate, and the bevel gear 903 drives the rotating rod 901 fixedly connected to the bevel gear 903 to rotate, and the rotating rod 901 drives the turntable 904 fixedly connected to the rotating rod 901 to rotate, so that the turntable 904 drives the knocking rod 905 fixedly connected to the turntable 904 and having a certain elasticity to rotate, and the knocking rod 905 can knock on the inner wall of the collecting bin 600 during the rotation process, so that the collecting bin 600 and the raw materials therein produce a certain vibration.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A step-by-step pulverizing device for processing protein raw materials, comprising a pulverizing bin (100), wherein a pulverizing roller 1 (200) driven by a motor and a stirring rod (300) driven by a motor are respectively installed inside the pulverizing bin (100), a pulverizing roller 2 (400) is rotatably connected to the side of the stirring rod (300), a sieve plate (500) is installed inside the pulverizing bin (100) by means of bolts, and a collecting bin (600) is installed on the side of the pulverizing bin (100); Features: The side of the crushing roller 1 (200) is connected to a sprocket 1 (701) in a transmission manner, the outer side of the sprocket 1 (701) is equipped with a chain (702), the interior of the crushing bin (100) is equipped with a fixed seat (703), the interior of the fixed seat (703) is rotatably connected to a reciprocating screw rod (704) passing through, the side of the reciprocating screw rod (704) is connected to a sprocket 2 (705), and the outer side of the reciprocating screw rod (704) is connected to a moving block (706) by means of a thread. The bottom of the moving block (706) is fixedly connected to a cleaning brush (707), the top of the cleaning brush (707) is rotatably connected to a gear 1 (708), the inner wall of the crushing bin (100) is equipped with a gear rod (709), the bottom of the gear 1 (708) is transmission-connected to a rotating brush (710), the interior of the crushing bin (100) is equipped with an auxiliary crushing component (800) for crushing raw materials, and the interior of the collecting bin (600) is equipped with a vibration component (900) for arranging residues.

2. A step-by-step crushing device for processing protein raw materials according to claim 1, characterized in that: One end of the chain (702) away from the sprocket wheel one (701) is mounted on the outer side of the sprocket wheel two (705).

3. A step-by-step crushing device for processing protein raw materials according to claim 1, characterized in that: The gear rod (709) is located on the side of the gear (708) and is in meshing state with the gear (708).

4. A step-by-step crushing device for processing protein raw materials according to claim 1, characterized in that: The auxiliary crushing assembly (800) comprises a hydraulic chamber 1 (801) and a hydraulic chamber 2 (802) which are mounted on the outside of a reciprocating screw rod (704); the inner wall of the hydraulic chamber 1 (801) is slidably connected to a movable plate (804) by means of an elastic telescopic rod (803); the outer side of the hydraulic chamber 1 (801) is slidably connected to an arc plate (805); one end of the hydraulic chamber 2 (802) is slidably connected to a force-bearing rod 1 (806); the other end of the hydraulic chamber 2 (802) is slidably connected to a gear ring (807); the bottom of the force-bearing rod 1 (806) is mounted with a spring 1 (808); and the side of the crushing roller 2 (400) is fixedly connected to a gear 2 (809).

5. A step-by-step crushing device for processing protein raw materials according to claim 4, characterized in that: The force bearing rod 1 (806) is located at the bottom of the arc-shaped plate (805) and is in contact with the arc-shaped plate (805).

6. A step-by-step crushing device for processing protein raw materials according to claim 4, characterized in that: The second gear (809) is located at the top of the ring gear (807) and is in meshing state with the ring gear (807).

7. The step-by-step crushing device for processing protein raw materials according to claim 1, characterized in that: The vibration assembly (900) comprises a rotating rod (901) rotatably connected to the collection bin (600); the side of the reciprocating screw (704) is transmission-connected to a bevel gear 1 (902); the top of the rotating rod (901) is fixedly connected to a bevel gear 2 (903); the outer side of the rotating rod (901) is fixedly connected to a rotating disk (904); and the outer side of the rotating disk (904) is fixedly connected to a knocking rod (905).

8. The step-by-step crushing device for processing protein raw materials according to claim 7, characterized in that: The bevel gear 2 (903) is located on the side of the bevel gear 1 (902) and is in meshing state with the bevel gear 2 (903).

9. A pulverizing method of a step-by-step pulverizing device for processing protein raw materials according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Start the motor to drive the crushing roller 1 (200) and the stirring rod (300) to rotate rapidly; Step 2: The raw material is put into the crushing bin (100) through the opening at the top of the crushing bin (100), the raw material is initially crushed by a crushing roller 1 (200), and then screened by a sieve plate (500); Step 3, the raw material passing through the screen plate (500) is moved to the second crushing roller (400) for secondary crushing, and the raw material after the step-by-step crushing operation is obtained; Step 4: The raw materials that have not passed through the sieve plate (500) in step 2 are pushed into the collecting bin (600), and the raw materials are put back into the crushing bin (100), and steps 2 and 3 are repeated.

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