Energy-saving pet feed production crusher

Abstract

The invention discloses an energy-saving type pet feed production crusher, and relates to the technical field of energy-saving type crushers, a machine body is provided with a crushing structure and a screening mechanism, a motor is fixed at the bottom in the machine body and is connected with a transmission shaft, and the transmission shaft is connected with a transmission mechanism. The transmission mechanism can be automatically switched according to the rotating speed of a transmission shaft, and when the motor rotates slowly, a crushing roller in the crushing mechanism is driven to rotate slowly with high torque to extrude and crush hard raw materials; when the motor rotates rapidly, the transmission shaft is in transmission connection with a vibrating screen in the screening mechanism through centrifugal force, and vibrating screening is conducted. Through the switchable motor power output mode, the utilization rate of the motor is improved, and the energy-saving function is achieved. Besides, specific structures and working processes of a transmission shaft, a transmission mechanism, a crushing mechanism and a screening mechanism are introduced, intermittent rotation can be realized by adopting a programmable and controlled servo motor, and the working mode of the equipment is further optimized.

Description

Technical Field

[0001] The invention relates to energy-saving crusher technology, in particular to an energy-saving pet feed production crusher. Background Art

[0002] As is known, in the process of pet food production, some raw materials containing hard ingredients (such as bones, etc.) need to be crushed first to make them into smaller particles or blocks for subsequent extraction and production. This requires the use of a crusher to assist in completing the production process. The crusher plays a vital role in the production of pet food and directly affects the production efficiency and product quality.

[0003] Existing pet feed production crushers have certain shortcomings: when the traditional crusher is working, the motor power output mode is relatively single, and it cannot be flexibly switched according to different working stages and task requirements. Therefore, multiple motors are generally set up for synchronous use. When crushing hard raw materials, the motor runs at a higher power, but in the screening link after crushing, the motor power is not reasonably adjusted, resulting in energy waste and low motor utilization. This unreasonable power use method increases production costs and does not meet the requirements of modern industry for energy-saving and efficient production. Summary of the invention

[0004] The object of the present invention is to provide an energy-saving pet feed production crusher to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solution: comprising: a machine body, on which a crushing structure for crushing hard raw materials and a screening mechanism for screening the crushed raw materials according to particle size are provided; and further comprising:

[0006] The motor is fixedly mounted on the bottom of the machine body and is connected to the crushing mechanism and the screening mechanism through transmission;

[0007] A transmission shaft, which is fixedly connected to the power output end of the motor;

[0008] The transmission mechanism is connected to the transmission shaft. When the transmission shaft rotates slowly with the motor, the transmission shaft passively drives the crushing roller in the crushing mechanism to rotate slowly with high torque, so as to extrude and crush the hard raw materials. When the transmission shaft rotates rapidly with the motor, the centrifugal force is used to passively switch the transmission shaft to the transmission connection with the vibrating screen in the screening mechanism, so as to vibrate and screen the crushed raw materials, and automatically switch between the crushing mechanism and the screening mechanism according to the rotation speed of the transmission shaft. A switchable motor power output transmission shaft is provided, so as to switch the motor to different uses at different rotation speeds, thereby improving the utilization rate of the motor and achieving the energy-saving function of the motor.

[0009] As a further description of the above technical solution: the interior of the transmission shaft is in the shape of a cavity with a closed bottom, and a column is arranged at the center position to form a cavity between the outer side of the column and the inner side of the transmission shaft.

[0010] As a further description of the above technical solution: the transmission mechanism includes an electromagnetic strip fixedly inserted around the transmission shaft, the bottom end of the electromagnetic strip is inserted inside the transmission shaft and fixedly connected to a fixed sleeve, the bottom end of the telescopic rod is slidably inserted in the fixed sleeve through a return spring, the top of the telescopic rod is fixedly connected with a gravity power connection plate, the surface of the gravity power connection plate is detachably connected to a power-on plate, and the power-on plate is arranged around the surface of the column in the transmission shaft and connected to an external power supply.

[0011] As a further description of the above technical solution: the electromagnetic strip is plugged into the outer end surface of the transmission shaft to magnetically connect the magnetic column, and the magnetic column is fixedly connected to the inner side of one end of the elastic plate.

[0012] As a further description of the above technical solution: the transmission mechanism also includes a tooth plate fixedly mounted on one end of the elastic plate, one side of the tooth plate is detachably engaged and connected to the slow turntable and the fast turntable, the slow turntable is arranged at the center position inside the fast turntable, and a bearing is connected between the outer side of the slow turntable and the inner side of the fast turntable.

[0013] As a further description of the above technical solution: one side of the tooth plate, the surface of the slow turntable and the surface of the fast turntable are provided with corresponding tooth grooves that expand outward.

[0014] As a further description of the above technical solution: the slow turntable is connected to the crushing mechanism, and the fast turntable is connected to the screening mechanism.

[0015] As a further description of the above technical solution: the crushing mechanism includes a crushing disc, the slow turntable is connected to the crushing disc through a belt drive, a transmission gear is fixedly connected to the inner side of the crushing disc, the transmission gear is fixedly installed on one end face of the crushing roller, the other end face of the crushing roller is rotatably connected in the crushing bin through a bearing, and the crushing roller is provided with two groups symmetrically installed on the top of the crushing bin, the crushing bin is fixedly installed on the surface of the machine body, and a material guide pipe is installed at the bottom of the crushing bin to connect to the surface of the screening mechanism.

[0016] As a further description of the above technical solution: the screening mechanism includes a vibrating plate, the fast turntable is connected to the vibrating plate through a belt drive, the inner periphery of the vibrating plate is rotatably connected to one end of a transmission rod through a bearing, the other end of the transmission rod is connected to a limit block through a bearing, the limit block is slidably connected in the limit groove and the inner side of the limit block is fixedly connected to both sides of the vibrating screen, the limit groove is horizontally provided with two sides of a fixed frame, the fixed frame is fixedly installed on the surface of the machine body, and a storage grid is provided at the bottom of the machine body, facing the bottom of the vibrating screen.

[0017] As a further description of the above technical solution: the side of the slow turntable with the toothed groove is flush with the side of the fast turntable, and the other side of the slow turntable protrudes outward more than the other side of the fast turntable, so that the belt connecting the slow turntable and the crushing disc and the belt connecting the fast turntable and the vibrating disc are misaligned with each other.

[0018] In the above technical solution, an energy-saving pet food production crusher provided by the present invention has the following beneficial effects:

[0019] 1. Improve the utilization rate of the motor and achieve energy saving: By setting a switchable motor power output transmission shaft, automatically switch between the crushing mechanism and the screening mechanism according to the motor speed, so that different motor speeds play different roles, avoid energy waste, and improve the use efficiency of the motor.

[0020] 2. The crushing and screening functions cooperate efficiently: The crushing mechanism adopts two groups of symmetric crushing rollers, which rotate in opposite directions to squeeze and crush hard raw materials. The screening mechanism drives the vibrating screen to screen by using a vibrating disc, a transmission rod and a limiting block. The two cooperate closely and can efficiently crush and accurately screen pet food raw materials.

[0021] 3. The structure is ingeniously designed and has strong stability: The inside of the transmission shaft is a cavity structure with columns, which cooperates with components such as electromagnetic strips and gravity power connection pieces to ensure the stable switching of the transmission mechanism. The special design of the slow turntable and the fast turntable makes the belt connected in a misaligned manner to avoid interference; the toothed plate and the toothed groove design of the turntable facilitate the switching of transmission under the action of centrifugal force and ensure the stable operation of the equipment.

[0022] 4. Adapt to different working requirements: A servo motor with internal programming and control can be used to achieve intermittent fast and slow rotation, meet the requirements of crushing and screening in different production stages, and enhance the applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure in which the crushing chamber and the machine body are disassembled provided by an embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the vibrating disc provided by an embodiment of the present invention;

[0027] Figure 4Schematic diagram of the structure of the combination of the fast turntable and the slow turntable provided by the embodiment of the present invention;

[0028] Figure 5 Schematic diagram of the structure of the transmission shaft provided by the embodiment of the present invention;

[0029] Figure 6 Schematic diagram of the structure of the slow turntable provided by the embodiment of the present invention;

[0030] Figure 7 Schematic diagram of the structure of the slow turntable and the transmission shaft in the slow rotation state provided by the embodiment of the present invention;

[0031] Figure 8 Schematic diagram of the structure of the fast turntable and the transmission shaft in the fast rotation state provided by the embodiment of the present invention;

[0032] Figure 9 Schematic diagram of the structure of the elastic plate provided by the embodiment of the present invention;

[0033] Figure 10 Provided by the embodiment of the present invention Figure 9 Enlarged view at position A in;

[0034] Figure 11 Schematic diagram of the structure of the toothed plate provided by the embodiment of the present invention.

[0035] Explanation of reference numerals:

[0036] 1 - Body; 2 - Vibrating screen; 3 - Vibrating disk; 4 - Crushing bin; 5 - Motor; 6 - Limit groove; 7 - Limit block; 8 - Storage bin; 9 - Fixed frame; 10 - Feeding pipe; 11 - Crushing disk; 12 - Transmission gear; 13 - Belt; 14 - Bearing; 15 - Transmission rod; 16 - Transmission shaft; 17 - Fast turntable; 18 - Slow turntable; 19 - Toothed plate; 20 - Elastic plate; 21 - Electromagnetic strip; 22 - Magnetic column; 23 - Fixed sleeve; 24 - Return spring; 25 - Telescopic rod; 26 - Gravity power connection piece; 27 - Power-on plate. Detailed implementation manners

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further introduced in detail below with reference to the accompanying drawings.

[0038] Example 1,

[0039] Please refer to Figures 1 - 11 , the embodiment of the present invention provides a technical solution for an energy-saving pet food production crusher: including: a body 1, a crushing structure for crushing hard raw materials is arranged on the body 1, and a screening mechanism for screening the crushed raw materials according to particle size; further including:

[0040] A motor 5, which is fixedly installed at the inner bottom of the machine body 1 and is drivingly connected to a crushing mechanism and a screening mechanism;

[0041] A transmission shaft 16, which is fixedly connected to the power output end of the motor 5;

[0042] A transmission mechanism, which is drivingly connected to the transmission shaft 16. When the transmission shaft 16 rotates slowly with the motor 5, the transmission shaft 16 drives the crushing rollers in the crushing mechanism to rotate slowly with high torque to crush hard raw materials; when the transmission shaft 16 rotates quickly with the motor 5, the transmission shaft 16 is passively switched to be drivingly connected to the vibrating screen 2 in the screening mechanism by centrifugal force to vibrate and screen the crushed raw materials, and the automatic switching between the crushing mechanism and the screening mechanism is automatically performed according to the rotation speed of the transmission shaft 16. The transmission shaft 16 with switchable power output of the motor 5 is provided to switch different uses of the motor 5 under different rotation speeds, improving the utilization rate of the motor 5 to achieve the energy-saving function of the motor 5.

[0043] In another embodiment provided by the present invention, preferably, the inside of the transmission shaft 16 is in the shape of a cavity with a closed bottom, and a column is provided at the central position, and a cavity is formed between the outside of the column and the inside of the transmission shaft 16.

[0044] In another embodiment provided by the present invention, the transmission mechanism includes electromagnetic strips 21 fixedly inserted around the inside of the transmission shaft 16. The bottom ends of the electromagnetic strips 21 are inserted into the inside of the transmission shaft 16 and fixedly connected to a fixed sleeve 23. The bottom end of a telescopic rod 25 is slidably inserted into the fixed sleeve 23 through a return spring 24. The top end of the telescopic rod 25 is fixedly connected to a gravity power connection piece 26. The surface of the gravity power connection piece 26 is separably connected to a power-on plate 27. The power-on plate 27 is arranged around the surface of the column inside the transmission shaft 16 and is connected to an external power source.

[0045] In another embodiment provided by the present invention, the electromagnetic strips 21 are inserted into the outer end face of the transmission shaft 16 and magnetically connected to magnetic force columns 22. The magnetic force columns 22 are fixedly connected to the inner side of one end of an elastic plate 20.

[0046] In another embodiment provided by the present invention, the transmission mechanism further includes a toothed plate 19 fixedly installed at one end of the elastic plate 20. One side of the toothed plate 19 is separably meshed with a slow rotating disk 18 and a fast rotating disk 17. The slow rotating disk 18 is arranged at the central position inside the fast rotating disk 17, and a bearing 14 is connected between the outside of the slow rotating disk 18 and the inside of the fast rotating disk 17.

[0047] In another embodiment provided by the present invention, corresponding outwardly expanding tooth grooves are provided on one side of the toothed plate 19, the surface of the slow rotating disk 18, and the surface of the fast rotating disk 17.

[0048] In another embodiment provided by the present invention, the slow rotating disk 18 is drivingly connected to the crushing mechanism, and the fast rotating disk 17 is drivingly connected to the screening mechanism.

[0049] In yet another embodiment provided by the present invention, the crushing mechanism includes a crushing disc 11. The slow rotating disc 18 is drivingly connected to the crushing disc 11 through a belt 13. A transmission gear 12 is fixedly connected to the inner side of the crushing disc 11. The transmission gear 12 is fixedly installed on one end face of the crushing roller. The other end face of the crushing roller is rotatably connected to the inside of the crushing chamber 4 through a bearing 14. Two groups of crushing rollers are symmetrically installed at the top inside the crushing chamber 4. The crushing chamber 4 is fixedly installed on the surface of the machine body 1. A material guiding pipe 10 is installed at the bottom of the crushing chamber 4 and communicates with the surface of the screening mechanism.

[0050] In yet another embodiment provided by the present invention, the screening mechanism includes a vibrating disc 3. The fast rotating disc 17 is drivingly connected to the vibrating disc 3 through a belt 13. One end of a transmission rod 15 is rotatably connected to the outer periphery of the inner side of the vibrating disc 3 through a bearing 14. The other end of the transmission rod 15 is connected to a limiting block 7 through a bearing 14. The limiting block 7 is slidably connected in a limiting groove 6 and the inner side of the limiting block 7 is fixedly connected to both sides of the vibrating screen 2. The limiting groove 6 is horizontally opened on both sides of a fixed frame 9. The fixed frame 9 is fixedly installed on the surface of the machine body 1. A storage bin 8 is provided at the bottom inside the machine body 1 directly below the vibrating screen 2.

[0051] In yet another embodiment provided by the present invention, preferably, the side of the slow rotating disc 18 and the fast rotating disc 17 with tooth grooves are flush, and the other side of the slow rotating disc 18 protrudes outward more than the other side of the fast rotating disc 17, so that the belt 13 connecting the slow rotating disc 18 and the crushing disc 11 and the belt 13 connecting the fast rotating disc 17 and the vibrating disc 3 are mutually offset.

[0052] When producing pet food, some pet food needs to extract some hard bones, etc. Before extracting from hard food, it is necessary to first crush it into smaller particles or blocks and then carry out extraction production. Therefore, a crusher needs to be used for auxiliary production. After installing the machine body 1;

[0053] Put the hard food into the crushing chamber 4. The two groups of crushing rollers installed in the crushing chamber 4 rotate in opposite directions to crush it, and the crushed food is discharged to the surface of the vibrating screen 2 through the material guiding pipe 10 provided at the bottom of the crushing chamber 4. The vibrating screen 2 vibrates rapidly inside the machine body 1 through the transmission of the motor 5, and screens the crushed bones on the surface of the vibrating screen 2 according to the size of the blocks. The small pieces of food are dropped downward into the storage bin 8 for storage for the next production step, and the large pieces of bones that cannot be screened are retained on the surface of the vibrating screen 2 for secondary crushing;

[0054] During this process, the start of the motor 5 drives the transmission shaft 16 to rotate. The start of the motor 5 can be divided into two parts:

[0055] Startup acceleration part:

[0056] During this process, the motor 5 has just started, and at the same time, the crushing roller has just started to rotate and contacts the hard food for crushing. Due to its own strength, the food will generate a large resistance to the crushing roller. Therefore, the rotational speed of the motor 5 at this time is slow, and the gravity power connection piece 26 arranged around the inside of the transmission shaft 16 cannot be separated from the power-on plate 27 due to centrifugal force. At this time, the electromagnetic strip 21 is in a powered state, adsorbing the magnetic force column 22 on the end face to keep the elastic plate 20 bent, and meshing the toothed plate 19 on the surface of the slow rotating disk 18. As the transmission shaft 16 rotates, the elastic plate 20 and the toothed plate 19 fixedly connected to the outside of the transmission shaft 16 drive the slow rotating disk 18 to rotate. The slow rotating disk 18 drives the crushing disk 11 to rotate through the belt 13. The crushing disk 11 drives the transmission gear 12 connecting the crushing roller in the crushing bin 4 on one side to rotate. One end of the two groups of crushing rollers arranged in the crushing bin 4 is connected through a bearing 14, and the transmission gears 12 installed at the other ends are meshed with each other, so that the two groups of crushing rollers can rotate in opposite directions. And one group of crushing rollers connected to the belt 13 is installed on the right side in the crushing bin 4 and rotates counterclockwise with the motor 5, while the other group of crushing rollers is installed on the left side in the crushing bin 4 and rotates clockwise, pushing and squeezing the hard food placed in the crushing bin 4 to the middle position between the two groups of crushing rollers for crushing;

[0057] After the speed increase is completed, the high-speed part:

[0058] During this process, the transmission shaft 16 of the motor 5 rotates at a high speed. During the high-speed rotation of the transmission shaft 16, due to centrifugal force, the gravity power connection piece 26 arranged around the inside of the transmission shaft 16, due to its own gravity and the centrifugal force received, inserts the telescopic rod 25 into the fixed sleeve 23 and squeezes the return spring 24. At this time, the power-on plate 27 is separated from the gravity power connection piece 26. At this time, the electromagnetic strip 21 is powered off and loses its magnetism. The electromagnetic strip 21 cannot generate a large magnetic adsorption on the magnetic force column 22. At this time, the elastic plate 20 unfolds outward due to centrifugal force, driving the toothed plate 19 connected to the top of the elastic plate 20 to switch from the surface of the slow rotating disk 18 to mesh with the tooth grooves between the surfaces of the fast rotating disk 17 and the slow rotating disk 18 at the same time. At this time, since the hard food has been completely crushed between the crushing rollers or only small particles of hard food remain, the fast rotating disk 17 and the slow rotating disk 18 rotate rapidly at the same time. The fast rotating disk 17 drives the vibrating disk 3 to rotate through the belt 13. The rapid rotation of the vibrating disk 3 drives the limiting block 7 to slide rapidly left and right in the limiting grooves 6 on both sides of the fixed frame 9 through the transmission rod 15 connected to one side of the surface through the bearing 14, thereby driving the vibrating screen 2 fixedly connected to the inside of the limiting block 7 to slide left and right in the fixed frame 9, realizing the vibration screening of the granular food on the surface of the vibrating screen 2;

[0059] In the above two processes, the fast and slow rotations of the motor 5 will occur repeatedly. The situation causing this repeated operation is:

[0060] New hard food is put into the crushing bin 4 again. Due to its own hardness, the hard food restricts the crushing roller again, reducing the rotational speed of the crushing roller. At this time, the rotational speed of the transmission shaft 16 is reduced, resulting in a decrease in the centrifugal force inside the transmission shaft 16. The elastic plate 20 rebounds, separating the toothed plate 19 from the surface of the fast turntable 17 and only engaging with the surface of the slow turntable 18. At the same time, the return spring 24 inside the transmission shaft 16 rebounds, bringing the gravity power connection piece 26 into contact with the energizing plate 27 to energize the electromagnetic bar 21. The electromagnetic bar 21 fixes and adsorbs the magnetic force column 22 to fix the position of the elastic plate 20. At this time, the vibrating screen 2 stops vibrating and screening, while the crushing roller rotates slowly, relying on a large torque to squeeze and crush the hard food.

[0061] Embodiment 2

[0062] Alternatively, by using a servo motor 5 with internal programmable and controllable functions for the motor 5, the motor 5 is rotated intermittently at high speed and low speed. In this case, the toothed plate 19 engages separately with the slow turntable 18 and the fast turntable 17. The specific situation is as follows:

[0063] Motor 5 in the slow rotation state:

[0064] The centrifugal force generated by the rotation of the transmission shaft 16 is small. Therefore, the electromagnetic bar 21 is energized to magnetically adsorb the magnetic force column 22, pulling the elastic plate 20 to engage the toothed plate 19 with the slow turntable 18. The crushing roller is rotated slowly for crushing by driving the crushing disc 11 through the belt 13. After slow rotation and crushing for a period of time, the servo motor 5 accelerates to the fast rotation part;

[0065] Motor 5 in the fast rotation state:

[0066] The transmission shaft 16 rotates rapidly, generating a large centrifugal force that squeezes the return spring 24 with the gravity power connection piece 26, telescoping the telescopic rod 25 into the fixed sleeve 23. At this time, the gravity power connection piece 26 is separated from the energizing plate 27, the electromagnetic bar 21 loses its magnetic force, and the elastic plate 20 unfolds outward due to the centrifugal force, completely separating the toothed plate 19 from the slow turntable 18 and engaging with the fast turntable 17. At this time, the crushing roller in the crushing bin 4 stops rotating, while the fast turntable 17 drives the vibrating disc 3 to rotate rapidly through the belt 13, and the vibrating screen 2 connected through the bearing 14 and the transmission rod 15 is restricted by the limit block 7 and the limit groove 6, causing the vibrating screen 2 to shake rapidly in the fixed frame 9 for screening. After screening for a period of time, the motor 5 rotates slowly again;

[0067] During the switching process between the slow rotation state and the fast rotation state:

[0068] During the switching process of the motor 5 between the slow rotation state and the fast rotation state, the toothed plate 19 expands outward under the centrifugal force, and there will be a state where the toothed plate 19 meshes with both the slow rotating disk 18 and the fast rotating disk 17 for a period of time. At this time, the crushing rollers in the crushing chamber 4 will quickly crush the incompletely crushed small-particle hard food in the crushing chamber 4, and at the same time, it can also vibrate and screen the vibrating screen 2 when the fast rotating disk 17 rotates.

[0069] In the above two embodiments, it should be noted that:

[0070] The fast rotating disk 17 and the slow rotating disk 18 are set as face gears, and the tooth grooves are arc-shaped that expand outward. At the same time, they cooperate with the racks on the surface of the toothed plate 19, which can facilitate the centrifugal force generated during the fast rotation to facilitate the switching of the toothed plate 19 between the fast rotating disk 17 and the slow rotating disk 18. And the slow rotating disk 18 is set at the inner center position of the fast rotating disk 17. The outer periphery of the slow rotating disk 18 is rotationally connected to the inner side of the fast rotating disk 17 through the inner and outer ring bearings 14, realizing the independent rotation between the fast rotating disk 17 and the slow rotating disk 18. Also, when there is a clamping plate stuck in the middle, the fast rotating disk 17 and the slow rotating disk 18 can rotate simultaneously;

[0071] The rotation of the vibrating disk 3 drives one end of the transmission rod 15 whose surface is connected by the bearing 14. The other end of the transmission rod 15 is connected to the limit block 7 through the bearing 14. The limit block 7 slides in the limit grooves 6 opened on both sides of the fixed frame 9, and the inner side of the limit block 7 is connected to both sides of the vibrating screen 2. By using the circular motion of the vibrating disk 3 to drive the front and back movement of the vibrating screen 2 through the transmission rod 15, the screening of the surface of the vibrating screen 2 is realized. This is the prior art and will not be elaborated here.

[0072] Two groups of symmetrically arranged crushing rollers with spikes on the surface are installed in the crushing chamber 4, and the two groups of crushing rollers rotate in opposite directions towards the middle position to realize the extrusion and crushing of objects. This is the prior art and will not be elaborated here.

[0073] The bottom of the crushing chamber 4 is provided with a cavity shape and is connected to the top end of the guide pipe 10. The discharge port at the bottom end of the guide pipe 10 is arranged above the vibrating screen 2 to convey and screen the crushed hard particle food. This is the prior art and will not be elaborated here.

[0074] Meshing structures in the shape of racks are provided on the inner side of the belt 13, the surface of the crushing disk 11, the surface of the transmission shaft 16, and the surface of the vibrating disk 3 to improve the transmission force between the belt 13 and reduce the reduction of the transmission force caused by the idling between the belts 13. Meshing structures in the shape of racks are provided on the inner side of the belt 13, the surface of the crushing disk 11, the surface of the transmission shaft 16, and the surface of the vibrating disk 3. This is the prior art and will not be elaborated here.

[0075] Only some exemplary embodiments of the present invention have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An energy-saving pet food production crusher, comprising: Machine body (1), on which there is a crushing structure for crushing hard raw materials and a screening mechanism for screening the crushed raw materials according to particle size; characterized in that it further includes: A motor (5), which is fixedly installed at the inner bottom of the machine body (1) and is in transmission connection with the crushing mechanism and the screening mechanism; A transmission shaft (16), which is fixedly connected to the power output end of the motor (5); A transmission mechanism, which is in transmission connection with the transmission shaft (16). When the transmission shaft (16) rotates slowly with the motor (5), the transmission shaft (16) passively drives the crushing roller in the crushing mechanism to rotate slowly with high torque to crush the hard raw materials. When the transmission shaft (16) rotates quickly with the motor (5), the centrifugal force is used to passively switch the transmission shaft (16) to be in transmission connection with the vibrating screen (2) in the screening mechanism to vibrate and screen the crushed raw materials, and automatically switch between the crushing mechanism and the screening mechanism according to the rotation speed of the transmission shaft (16). The transmission shaft (16) with switchable power output of the motor (5) is set to switch different uses of the motor (5) under different rotation speeds, improving the utilization rate of the motor (5) to achieve the energy-saving function of the motor (5).

2. An energy-saving pet food production crusher according to claim 1, characterized in that, The inside of the transmission shaft (16) is in the shape of a cavity with a closed bottom, and a column is arranged at the central position, and a cavity is formed between the outside of the column and the inside of the transmission shaft (16).

3. An energy-saving pet food production crusher according to claim 1, characterized in that, The transmission mechanism includes electromagnetic strips (21) fixedly inserted around the inside of the transmission shaft (16). The bottom ends of the electromagnetic strips (21) are inserted into the inside of the transmission shaft (16) and fixedly connected to a fixed sleeve (23). The bottom end of a telescopic rod (25) is slidably inserted into the fixed sleeve (23) through a return spring (24). The top end of the telescopic rod (25) is fixedly connected with a gravity power connection piece (26). The surface of the gravity power connection piece (26) is detachably connected to a power connection plate (27). The power connection plate (27) is arranged around the surface of the column inside the transmission shaft (16) and is connected to an external power supply.

4. An energy-saving pet feed production crusher according to claim 3, characterized in that, The electromagnetic strips (21) are inserted into the outer end face of the transmission shaft (16) and are magnetically connected to magnetic force columns (22). The magnetic force columns (22) are fixedly connected to the inner side of one end of an elastic plate (20).

5. An energy-saving pet food production crusher according to claim 1, characterized in that, The transmission mechanism further includes a toothed plate (19) fixedly installed at one end of the elastic plate (20). One side of the toothed plate (19) is detachably meshed with a slow rotating disk (18) and a fast rotating disk (17). The slow rotating disk (18) is arranged at the central position inside the fast rotating disk (17), and a bearing (14) is connected between the outside of the slow rotating disk (18) and the inside of the fast rotating disk (17).

6. An energy-saving pet food production crusher according to claim 5, characterized in that, On one side of the toothed plate (19), the surface of the slow rotating disk (18) and the surface of the fast rotating disk (17), there are correspondingly outwardly expanding tooth grooves opened.

7. An energy-saving pet feed production crusher according to claim 5, characterized in that, The slow rotating disk (18) is in transmission connection with the crushing mechanism, and the fast rotating disk (17) is in transmission connection with the screening mechanism.

8. An energy-saving pet feed production crusher according to claim 7, characterized in that, The crushing mechanism includes a crushing disc (11). The slow rotating disc (18) is drivingly connected to the crushing disc (11) through a belt (13). A transmission gear (12) is fixedly connected to the inner side of the crushing disc (11). The transmission gear (12) is fixedly installed on one end face of the crushing roller. The other end face of the crushing roller is rotatably connected to the inside of the crushing chamber (4) through a bearing (14). And two groups of crushing rollers are symmetrically installed at the inner top of the crushing chamber (4). The crushing chamber (4) is fixedly installed on the surface of the machine body (1). And a material guiding pipe (10) is installed at the bottom of the crushing chamber (4) and communicated with the surface of the screening mechanism.

9. An energy-saving pet food production crusher according to claim 7, characterized in that, The screening mechanism includes a vibrating disc (3). The fast rotating disc (17) is drivingly connected to the vibrating disc (3) through a belt (13). One end of a transmission rod (15) is rotatably connected to the outer periphery of the inner side of the vibrating disc (3) through a bearing (14). The other end of the transmission rod (15) is connected to a limiting block (7) through a bearing (14). The limiting block (7) is slidably connected in a limiting groove (6) and the inner side of the limiting block (7) is fixedly connected to both sides of a vibrating screen (2). The limiting groove (6) is horizontally opened on both sides of a fixed frame (9). The fixed frame (9) is fixedly installed on the surface of the machine body (1). A storage bin (8) is arranged at the inner bottom of the machine body (1) right below the vibrating screen (2).

10. An energy-saving pet food production crusher according to claim 7, characterized in that, The sides of the slow rotating disc (18) and the fast rotating disc (17) with tooth grooves are flush. The other side of the slow rotating disc (18) protrudes outward more than the other side of the fast rotating disc (17), so that the belt (13) connecting the slow rotating disc (18) and the crushing disc (11) and the belt (13) connecting the fast rotating disc (17) and the vibrating disc (3) are mutually offset.

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