CN118287195A - A fodder reducing mechanism for feed production - Google Patents

Abstract

The invention belongs to the technical field of feed production, and discloses a feed crushing device for feed production, which comprises a crushing box, wherein supporting feet are arranged at positions, close to four corners, of the crushing box, a feed inlet is formed in the top end of the crushing box, a discharge outlet is formed in the bottom end of the crushing box, crushing rollers are movably arranged on the front side and the rear side of an inner cavity of the crushing box, the two crushing rollers rotate respectively, and a gap is formed between the two crushing rollers. According to the invention, the power in the feed crushing process is utilized, the active suction of air is realized through the rotating action, the air is led out upwards from the bottom end of the crushing roller, the flowing air is utilized to act on the descending feed to blow the feed, the descending speed of the feed is delayed, the contact time between the feed and the crushing roller is prolonged, the problem that the contact time between the feed and the crushing roller is shorter in the traditional device is avoided, the crushing time is prolonged, the full crushing of the feed is further promoted, and the crushing efficiency is improved.

Description

A feed crushing device for feed production

Technical Field

The invention belongs to the technical field of feed production, and in particular relates to a feed crushing device used for feed production.

Background technique

Feed crushing is one of the commonly used raw material pretreatment methods in the feed processing process. It refers to the process of crushing and refining the feed raw materials to make them reach a particle size suitable for animal digestion and absorption. It is an indispensable part of feed processing and has an important impact on the feed utilization efficiency and production performance of animals. The crushed feed has many advantages. First, its particles are smaller and have a larger surface area, which makes it easier for animals to bite the feed and easier to digest and absorb, thereby improving the utilization and digestibility of the feed. Secondly, the crushed feed raw materials are easier for animals to ingest, which helps animals obtain more nutrients. In the process of feed production, feed crushing devices are often used to crush the feed.

A conventional feed crushing device mainly consists of a crushing roller and a crushing box, wherein the crushing rollers are installed on both sides of the inner cavity of the crushing box, and the feed crushing process is achieved through the relative rotation of the two crushing rollers. When in use, the feed is thrown into the device from the top and enters the two relatively rotating crushing rollers. The feed crushing process is achieved through the relative rotation of the two crushing rollers. However, the contact time between the crushing roller and the feed in the traditional device is extremely limited, which makes it difficult for some feed to be fully crushed, affecting the crushing efficiency.

In the process of feed crushing, in order to fully screen and crush the feed in the prior art, a screen is often installed at the bottom of the two crushing rollers for feed crushing. However, when feed of different coarseness and fineness needs to be processed, different filter screens need to be replaced to realize the processing process of feed of different specifications. At the same time, when part of the feed is stuck in the filter holes of the screen, it will also cause blockage during crushing and screening, affecting the normal discharging process, and it is urgently needed to be improved.

Summary of the invention

The object of the present invention is to provide a feed crushing device for feed production to solve the problems raised in the above background technology.

In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a feed crushing device for feed production, comprising a crushing box, wherein support feet are installed at positions near the four corners of the crushing box, a feed inlet is provided at the top of the crushing box, a discharge port is provided at the bottom of the crushing box, crushing rollers are movably installed on the front and rear sides of the inner cavity of the crushing box, the two crushing rollers rotate relative to the crushing box, a gap is provided between the two crushing rollers, power gears located on the outer side of the crushing box are installed on the left and right sides of the two crushing rollers through connecting shafts, the two power gears on the same side are meshed and connected, and the left and right sides of the inner cavity of the crushing box are movably installed A frame is installed, and a main arc filter is provided at the bottom end of the frame, and the left and right sides of the top of the main arc filter are connected to the bottom ends of the two frames, one side of the crushing box is inlaid with a motor and connected to the middle part of the frame, the main arc filter is located directly below the two crushing rollers, and a secondary arc filter is provided at the bottom end of the main arc filter, and the bottom end of the main arc filter is in contact with the top of the secondary arc filter, and an air collecting component is installed on the side of the power gear away from the crushing box, a four-way valve is provided between the two air collecting components, and the bottom end of the four-way valve is fixedly connected to a three-way valve, and the number and size of filter holes on the main arc filter and the secondary arc filter are the same.

When in use, the feed to be crushed needs to be put in from the top of the feed inlet. After the feed is put in, in order to prevent dust, a dust cover can be placed on the top of the feed inlet to prevent dust and feed overflow. At the same time, a receiving trough needs to be placed at the bottom of the discharge port to receive the feed after it is crushed.

When the crushing starts, any air collecting component can be driven to rotate by starting the external motor. At this time, any crushing roller can be driven to rotate synchronously. At this time, the two crushing rollers can be driven to rotate through the transmission effect of the power gear. At this time, the two crushing rollers need to be driven to rotate inward at the same time. At this time, the feed falling between the two crushing rollers can be crushed by the relative rotation of the two crushing rollers and fall to the main arc filter for filtration. At this time, the crushed feed can be screened by the main arc filter and the auxiliary arc filter and then discharged from the discharge port, completing the feed crushing process;

If the feed is not completely crushed and needs to be crushed for the second time, the motor embedded in the crushing box can be turned on to drive the frame to rotate. At this time, the main arc filter can rotate with the output shaft of the embedded motor as the central axis until the feed on the inner side of the main arc filter is driven to move diagonally upward. After the main arc filter rotates to a certain height, it can be poured out from one side of the main arc filter and re-enter between the two crushing rollers for the secondary crushing process.

As a further technical solution of the present invention, one end of the three-way valve close to the crushing box passes through one side of the crushing box and is fixedly connected to a lower air pipe, and the output end of the lower air pipe is located below the two crushing rollers.

During the feed crushing process, the valve at the bottom of the four-way valve is in an open state, while the valve at the top of the four-way valve is in a closed state. At the same time, the valve at the bottom of the three-way valve is also in a closed state, while the valve at the rear end of the three-way valve remains open.

As a further technical solution of the present invention, the gas collecting assembly includes a gas collecting tank, which is located on one side of the power gear. Mounting frames are installed on both upper and lower ends of the gas collecting tank, and the other end of the mounting frame is connected to one side of the crushing box.

As a further technical solution of the present invention, a main shaft is movably connected to the middle of the gas collecting tank, a turntable is fixedly sleeved on the outer side of the main shaft, and blades are fixedly installed at equal angles on one side of the turntable.

As a further technical solution of the present invention, the relatively distant ends of the two gas collecting tanks are fixedly connected to an intake valve, the relatively close ends of the two gas collecting tanks are fixedly connected to an exhaust pipe, and the other ends of the two exhaust pipes are connected to the left and right sides of the four-way valve.

During the feed crushing process, the rotation of the external motor can drive the relative rotation of the two crushing rollers. When the crushing rollers rotate, they can synchronously drive the main shaft to rotate, and when the main shaft rotates at high speed, it can synchronously drive the blades to rotate circumferentially. At this time, negative pressure can be generated inside the air collecting tank, and the external air can be sucked into the air collecting tank through the air intake valve. At the same time, it can be discharged through the exhaust pipe and enter the inside of the four-way valve. At this time, it can be introduced into the inside of the three-way valve through the bottom end of the four-way valve, and discharged through the rear end of the three-way valve into the lower air pipe, and act on the bottom ends of the two crushing rollers. At this time, force can be applied to the bottom end of the feed to increase the residence time of the feed inside the crushing box.

By utilizing the power in the feed crushing process, the active air intake is achieved through the rotating action, and the air is guided upward from the bottom end of the crushing roller. The flowing air is used to act on the descending feed to blow the feed, slowing down the descent speed of the feed, and increasing the contact time between the feed and the crushing roller. This avoids the problem of short contact time between the feed and the crushing roller in traditional devices, increases the crushing time, and thus promotes the full crushing of the feed and improves the crushing efficiency.

As a further technical solution of the present invention, the top end of the four-way valve is fixedly connected to a first bend pipe, the end of the first bend pipe away from the four-way valve passes through one side of the crushing box and is fixedly connected to an upper air pipe located above the two crushing rollers.

When the feed is crushed and some of the incompletely crushed feed is completely crushed, the valve at the bottom of the four-way valve can be closed, and the two crushing rollers can be kept rotating. At the same time, the valve at the top of the four-way valve can be opened. At this time, the air can be discharged through the first elbow and sprayed to the two rotating crushing rollers through the upper air pipe. At this time, the relative rotation of the two crushing rollers and the flowing air can be used to discharge the feed stuck on the crushing rollers and make it fall from the discharge port, completing the automatic cleaning of the feed.

By reusing the action of feed crushing and changing the output direction of gas, the feed descent speed is increased instead of slowed down, so that the residual feed can fall quickly. At the same time, with the rotation of the crushing roller, the residual feed can be automatically cleaned without manual cleaning. At the same time, the residual feed can be reused, which not only simplifies the maintenance process, but also improves the reuse rate of resources.

As a further technical solution of the present invention, adjustment components are installed on both sides of the secondary arc filter, and the bottom end of the three-way valve is fixedly connected to a second elbow, and the second elbow is connected to the adjustment component.

As a further technical solution of the present invention, the adjustment component includes an air temporary storage tube, which is connected to one side of the crushing box, and the top end of the air temporary storage tube away from the crushing box is fixedly connected to an air inlet, and the bottom end of the air temporary storage tube away from the crushing box is fixedly connected to an exhaust valve, and the top end of the air inlet is connected to the bottom end of the second bent pipe.

As a further technical solution of the present invention, a piston plate is movably sleeved inside the air temporary storage tube, and the piston plate is displaced left and right relative to the air temporary storage tube. A piston rod is installed on the side of the piston plate close to the crushing box, and the end of the piston rod away from the piston plate passes through one side of the crushing box and is connected to one side of the secondary arc filter.

As a further technical solution of the present invention, the outer side surface of the piston rod is movably sleeved with a return spring located inside the air temporary storage tube, and the left and right ends of the return spring are respectively connected to one end of the piston plate and one end of the air temporary storage tube.

When it is necessary to adjust the specifications of the crushed feed, or to dynamically adjust the specifications of the feed, the valve at the bottom of the three-way valve on either side can be opened. At this time, the air enters the air inlet on the corresponding side through the second elbow and enters the interior of the air temporary storage tube. At this time, the exhaust valve must be kept in a closed state. At this time, the compressed air can apply thrust to the piston plate, and drive the piston plate and the piston rod to move toward the crushing box. At this time, the secondary arc filter can be displaced relative to the main arc filter. At this time, the two corresponding filter holes can be misaligned, and the corresponding filter hole diameters can change, completing the change of the screening aperture.

By further utilizing the rotating action of feed crushing, the air generated during crushing can act on the inside of the adjustment component and drive the secondary arc filter to move relative to the main arc filter, changing the diameter of the staggered filter holes. The whole process can be completed dynamically without stopping the device, and dynamic adjustment can be achieved. At the same time, in conjunction with the rotation of the main arc filter, it can effectively prevent the feed from getting stuck inside the filter holes. It not only adapts to the crushing process of feed of different specifications, but also reduces the occurrence of blockage and improves practicality.

The beneficial effects of the present invention are as follows:

1. The present invention utilizes the power in the feed crushing process, realizes active air suction through the rotation action, and guides the air upward from the bottom end of the crushing roller, and uses the flowing air to act on the descending feed to blow the feed, slow down the descending speed of the feed, and increase the contact time between the feed and the crushing roller, avoiding the problem of short contact time between the feed and the crushing roller in traditional devices, increasing the crushing time, thereby promoting sufficient crushing of the feed and improving the crushing efficiency.

2. The present invention further utilizes the rotating action of feed crushing. The air generated during crushing can act on the inside of the adjustment component and drive the secondary arc filter to move relative to the main arc filter, changing the diameter of the staggered filter holes. The whole process can be completed dynamically without stopping the device, and dynamic adjustment can be achieved. At the same time, with the rotation of the main arc filter, the feed can be effectively prevented from being stuck in the filter hole. It not only adapts to the crushing process of feeds of different specifications, but also reduces the occurrence of blockage and improves practicality.

3. The present invention reuses the action of feed crushing and changes the output direction of gas to change the slowing down of feed descent speed into increasing the feed descent speed, so that the residual feed can fall quickly. At the same time, with the rotation of the crushing roller, the residual feed can be automatically cleaned without manual auxiliary cleaning. At the same time, the residual feed can be reused, which not only simplifies the maintenance process, but also improves the reuse rate of resources.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a schematic diagram of the bottom structure of the present invention;

FIG3 is a schematic cross-sectional view of the internal structure of a crushing box according to the present invention;

FIG4 is a schematic diagram of the coordination of two crushing roller structures of the present invention;

FIG5 is a separate schematic diagram of the main curved filter structure of the present invention;

FIG6 is a front cross-sectional schematic diagram of the internal structure of the crushing box of the present invention;

FIG7 is a schematic diagram of the coordination of the four-way valve, the three-way valve and the gas collecting assembly structure of the present invention;

FIG8 is a cross-sectional schematic diagram of the internal structure of the gas collecting assembly of the present invention;

FIG9 is a schematic diagram of the coordination of the auxiliary arc filter and the adjustment assembly structure of the present invention;

FIG. 10 is a schematic cross-sectional view of the internal structure of the adjustment assembly of the present invention.

In the figure: 1. crushing box; 2. supporting feet; 3. feed port; 4. discharge port; 5. crushing roller; 6. power gear; 7. frame; 8. main arc filter; 9. secondary arc filter; 10. four-way valve; 11. first elbow; 12. three-way valve; 13. second elbow; 14. gas collecting assembly; 141. gas collecting tank; 142. mounting frame; 143. main shaft; 144. turntable; 145. blade; 146. intake valve; 147. exhaust pipe; 15. adjustment assembly; 151. air temporary storage pipe; 152. intake port; 153. exhaust valve; 154. piston plate; 155. piston rod; 156. return spring; 16. upper air supply pipe; 17. lower air supply pipe.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

As shown in Figures 1 to 10, in an embodiment of the present invention, a feed crushing device for feed production includes a crushing box 1, support feet 2 are installed near the four corners of the crushing box 1, a feed inlet 3 is opened at the top of the crushing box 1, and a discharge port 4 is opened at the bottom of the crushing box 1. Crushing rollers 5 are movably installed on the front and back sides of the inner cavity of the crushing box 1, and the two crushing rollers 5 rotate relative to the crushing box 1. A gap is provided between the two crushing rollers 5, and power gears 6 located on the outer side of the crushing box 1 are installed on the left and right sides of the two crushing rollers 5 through connecting shafts. The two power gears 6 on the same side are meshed and connected, and a frame 7 is movably installed on the left and right sides of the inner cavity of the crushing box 1, and a main arc filter 8 is provided at the bottom end of the frame 7. The left and right sides of the top of the filter screen 8 are connected to the bottom ends of the two frames 7. One side of the crushing box 1 is inlaid with a motor and connected to the middle of the frame 7. The main arc filter screen 8 is located directly below the two crushing rollers 5. The bottom end of the main arc filter screen 8 is provided with a secondary arc filter screen 9. The bottom end of the main arc filter screen 8 is in contact with the top of the secondary arc filter screen 9. An air collecting component 14 is installed on the side of the power gear 6 away from the crushing box 1. A four-way valve 10 is provided between the two air collecting components 14. The bottom end of the four-way valve 10 is fixedly connected to a three-way valve 12. The number and size of filter holes on the main arc filter screen 8 and the secondary arc filter screen 9 are the same. Before use, it is necessary to connect between an external motor and any air collecting component 14 to provide power for crushing.

When in use, the feed to be crushed needs to be put in from the top of the feed inlet 3. After the feed is put in, in order to prevent dust, a dust cover can be placed on the top of the feed inlet 3 to prevent dust and feed overflow. At the same time, a receiving trough needs to be placed at the bottom of the discharge port 4 to receive the feed after it is crushed.

When the crushing starts, any air collecting assembly 14 can be driven to rotate by starting an external motor, and any crushing roller 5 can be driven to rotate synchronously at this time. At this time, the two crushing rollers 5 can be driven to rotate through the transmission effect of the power gear 6. At this time, the two crushing rollers 5 need to be driven to rotate inward at the same time. At this time, the feed dropped between the two crushing rollers 5 can be crushed by the relative rotation of the two crushing rollers 5, and dropped to the main arc filter 8 for filtering. At this time, the crushed feed can be screened by the main arc filter 8 and the auxiliary arc filter 9 and then discharged from the discharge port 4, completing the crushing process of the feed;

If the feed is not completely crushed and needs to be crushed again, the motor embedded in the crushing box 1 can be turned on to drive the frame 7 to rotate. At this time, the main arc filter 8 can rotate with the output shaft of the embedded motor as the central axis until the feed on the inner side of the main arc filter 8 is driven to move obliquely upward. After the main arc filter 8 rotates to a certain height, it can be poured out from one side of the main arc filter 8 and re-enter between the two crushing rollers 5 for the secondary crushing process.

As shown in FIG. 3 and FIG. 6 , one end of the three-way valve 12 close to the crushing box 1 passes through one side of the crushing box 1 and is fixedly connected to a lower air pipe 17 . The output end of the lower air pipe 17 is located below between the two crushing rollers 5 .

During the feed crushing process, the valve at the bottom of the four-way valve 10 is in an open state, while the valve at the top of the four-way valve 10 is in a closed state. At the same time, the valve at the bottom of the three-way valve 12 is also in a closed state, while the valve at the rear end of the three-way valve 12 remains in an open state.

As shown in Figures 1 and 2 and Figures 7 and 8, the gas collecting assembly 14 includes an air collecting tank 141, which is located on one side of the power gear 6. Mounting frames 142 are installed at both upper and lower ends of the air collecting tank 141, and the other end of the mounting frame 142 is connected to one side of the crushing box 1. A main shaft 143 is movably connected to the middle of the air collecting tank 141, and a turntable 144 is fixedly sleeved on the outer side of the main shaft 143. A blade 145 is fixedly installed at an equal angle on one side of the turntable 144. The relatively far ends of the two air collecting tanks 141 are fixedly connected to an air intake valve 146, and the relatively close ends of the two air collecting tanks 141 are fixedly connected to an exhaust pipe 147, and the other ends of the two exhaust pipes 147 are connected to the left and right sides of the four-way valve 10.

Embodiment 1: During the process of crushing the feed, the rotation of the external motor can drive the relative rotation of the two crushing rollers 5. When the crushing rollers 5 rotate, they can synchronously drive the main shaft 143 to rotate, and when the main shaft 143 rotates at high speed, it can synchronously drive the blades 145 to rotate circumferentially. At this time, negative pressure can be generated inside the air collecting tank 141, and the external air can be sucked into the interior of the air collecting tank 141 through the air intake valve 146. At the same time, it can be discharged through the exhaust pipe 147 and enter the interior of the four-way valve 10. At this time, it can be introduced into the interior of the three-way valve 12 through the bottom end of the four-way valve 10, and discharged into the interior of the lower air supply pipe 17 through the rear end of the three-way valve 12, and act on the bottom ends of the two crushing rollers 5. At this time, a force can be applied to the bottom end of the feed to increase the residence time of the feed in the crushing box 1.

By utilizing the power in the feed crushing process, active air intake is achieved through the rotating action, and the air is guided upward from the bottom end of the crushing roller 5. The flowing air is used to act on the descending feed to blow the feed, thereby slowing down the descending speed of the feed and increasing the contact time between the feed and the crushing roller 5. This avoids the problem of short contact time between the feed and the crushing roller 5 in traditional devices, increases the crushing time, and further promotes sufficient crushing of the feed, thereby improving the crushing efficiency.

As shown in Figures 3 and 6 and Figures 7 and 8, the top end of the four-way valve 10 is fixedly connected to a first bend pipe 11, and the end of the first bend pipe 11 away from the four-way valve 10 passes through one side of the crushing box 1 and is fixedly connected to an upper air pipe 16 located above the two crushing rollers 5.

When the feed is crushed and part of the feed that has not been completely crushed is completely crushed, the valve at the bottom of the four-way valve 10 can be closed, and the two crushing rollers 5 are kept rotating. At the same time, the valve at the top of the four-way valve 10 is opened. At this time, the air can be discharged through the first bend 11 and sprayed to the two rotating crushing rollers 5 through the upper air pipe 16. At this time, the relative rotation of the two crushing rollers 5 and the flowing air can be used to discharge the feed stuck on the crushing rollers 5 and make it fall from the discharge port 4, thereby completing the automatic cleaning of the feed.

By reusing the action of feed crushing and changing the output direction of gas, the feed descending speed is increased instead of slowed down, so that the residual feed can be quickly dropped. At the same time, with the rotation of the crushing roller 5, the residual feed can be automatically cleaned without manual cleaning. At the same time, the residual feed can be reused, which not only simplifies the maintenance process, but also improves the reuse rate of resources.

As shown in Figures 3 and 6 as well as Figures 9 and 10, adjustment components 15 are installed on both sides of the secondary arc filter 9, the bottom end of the three-way valve 12 is fixedly connected with a second elbow 13, the second elbow 13 is connected to the adjustment component 15, the adjustment component 15 includes an air temporary storage pipe 151, the air temporary storage pipe 151 is connected to one side of the crushing box 1, the top of the air temporary storage pipe 151 away from the crushing box 1 is fixedly connected with an air inlet 152, the bottom end of the air temporary storage pipe 151 away from the crushing box 1 is fixedly connected with an exhaust valve 153, the top of the air inlet 152 is connected to the second elbow 13 The bottom ends are connected, and a piston plate 154 is movably sleeved inside the air temporary storage tube 151. The piston plate 154 is displaced left and right relative to the air temporary storage tube 151. A piston rod 155 is installed on the side of the piston plate 154 close to the crushing box 1. The end of the piston rod 155 away from the piston plate 154 passes through one side of the crushing box 1 and is connected to one side of the secondary arc filter 9. The outer side of the piston rod 155 is movably sleeved with a return spring 156 located inside the air temporary storage tube 151. The left and right ends of the return spring 156 are respectively connected to one end of the piston plate 154 and one end of the air temporary storage tube 151.

Embodiment 2: When it is necessary to adjust the specifications of the crushed feed, or to dynamically adjust the specifications of the feed, the valve at the bottom end of the three-way valve 12 on either side can be opened. At this time, the air enters the air inlet 152 on the corresponding side through the second bend pipe 13, and enters the air temporary storage tube 151. At this time, the exhaust valve 153 needs to be kept in a closed state. At this time, the compressed air can apply thrust to the piston plate 154, and drive the piston plate 154 and the piston rod 155 to move in the direction close to the crushing box 1. At this time, the secondary arc filter 9 can be displaced relative to the main arc filter 8. At this time, the two corresponding filter holes can be misaligned, and the corresponding filter hole diameters can change, completing the change of the screening aperture.

By further utilizing the rotating action of feed crushing, the air generated during crushing can act on the inside of the adjustment component 15, and drive the secondary arc filter 9 to move relative to the main arc filter 8, thereby changing the diameter of the staggered filter holes. The entire process can be completed dynamically without shutting down the device, and dynamic adjustment can be achieved. At the same time, in conjunction with the rotation of the main arc filter 8, the feed can be effectively prevented from being stuck inside the filter holes. This not only adapts to the crushing process of feeds of different specifications, but also reduces the occurrence of blockages and improves practicality.

Working principle and usage process:

When in use, the feed to be crushed needs to be put in from the top of the feed inlet 3. After the feed is put in, in order to prevent dust, a dust cover can be placed on the top of the feed inlet 3 to prevent dust and feed overflow. At the same time, a receiving trough needs to be placed at the bottom of the discharge port 4 to receive the feed after it is crushed.

When the crushing starts, any air collecting assembly 14 can be driven to rotate by starting an external motor, and any crushing roller 5 can be driven to rotate synchronously at this time. At this time, the two crushing rollers 5 can be driven to rotate through the transmission effect of the power gear 6. At this time, the two crushing rollers 5 need to be driven to rotate inward at the same time. At this time, the feed dropped between the two crushing rollers 5 can be crushed by the relative rotation of the two crushing rollers 5, and dropped to the main arc filter 8 for filtering. At this time, the crushed feed can be screened by the main arc filter 8 and the auxiliary arc filter 9 and then discharged from the discharge port 4, completing the crushing process of the feed;

During the feed crushing process, the rotation of the external motor can drive the relative rotation of the two crushing rollers 5. When the crushing rollers 5 rotate, the main shaft 143 can be synchronously driven to rotate, and when the main shaft 143 rotates at a high speed, the blades 145 can be synchronously driven to rotate circumferentially. At this time, negative pressure can be generated inside the air collecting tank 141, and the external air is sucked into the interior of the air collecting tank 141 through the air inlet valve 146. At the same time, it can be discharged through the exhaust pipe 147 and enter the interior of the four-way valve 10. At this time, it can be introduced into the interior of the three-way valve 12 through the bottom end of the four-way valve 10, and discharged into the interior of the lower air supply pipe 17 through the rear end of the three-way valve 12, and act on the bottom ends of the two crushing rollers 5. At this time, a force can be applied to the bottom end of the feed to increase the residence time of the feed in the crushing box 1;

If the feed is not completely crushed and needs to be crushed again, the motor embedded in the crushing box 1 can be turned on to drive the frame 7 to rotate. At this time, the main arc filter 8 can rotate with the output shaft of the embedded motor as the central axis until the feed on the inner side of the main arc filter 8 is driven to move obliquely upward. After the main arc filter 8 rotates to a certain height, it can be poured out from one side of the main arc filter 8 and re-enter between the two crushing rollers 5 for a secondary crushing process.

When it is necessary to adjust the specifications of the crushed feed, or to dynamically adjust the specifications of the feed, the valve at the bottom end of the three-way valve 12 on either side can be opened, and the air then passes through the second curved pipe 13 into the air inlet 152 on the corresponding side, and enters the air temporary storage tube 151. At this time, the exhaust valve 153 needs to be kept in a closed state. At this time, the compressed air can apply thrust to the piston plate 154, and drive the piston plate 154 and the piston rod 155 to move in the direction close to the crushing box 1. At this time, the secondary arc filter 9 can be displaced relative to the main arc filter 8. At this time, the two corresponding filter holes can be misaligned, and the corresponding filter hole diameters can be changed, completing the change of the screening aperture;

When the feed is crushed and part of the feed that has not been completely crushed is completely crushed, the valve at the bottom of the four-way valve 10 can be closed, and the two crushing rollers 5 are kept rotating. At the same time, the valve at the top of the four-way valve 10 is opened. At this time, the air can be discharged through the first bend 11 and sprayed to the two rotating crushing rollers 5 through the upper air pipe 16. At this time, the relative rotation of the two crushing rollers 5 and the flowing air can be used to discharge the feed stuck on the crushing rollers 5 and make it fall from the discharge port 4, thereby completing the automatic cleaning of the feed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A feed crushing device for feed production, comprising a crushing box (1), characterized in that: support feet (2) are installed near the four corners of the crushing box (1), a feed inlet (3) is provided at the top of the crushing box (1), and a discharge outlet (4) is provided at the bottom of the crushing box (1), crushing rollers (5) are movably installed on the front and rear sides of the inner cavity of the crushing box (1), the two crushing rollers (5) rotate relative to the crushing box (1), a gap is provided between the two crushing rollers (5), power gears (6) located on the outer side of the crushing box (1) are installed on the left and right sides of the two crushing rollers (5) through connecting shafts, and the two power gears (6) located on the same side are meshed and connected, and a frame (7) is movably installed on the left and right sides of the inner cavity of the crushing box (1), and the bottom of the frame (7) is provided with a plurality of gears (6) disposed on the outer side of the crushing box (1). A main arc filter (8) is provided at the end, and the left and right sides of the top of the main arc filter (8) are connected to the bottom ends of the two frames (7). A motor is embedded on one side of the crushing box (1) and is connected to the middle of the frame (7). The main arc filter (8) is located directly below the two crushing rollers (5). A secondary arc filter (9) is provided at the bottom end of the main arc filter (8), and the bottom end of the main arc filter (8) is in contact with the top end of the secondary arc filter (9). A gas collecting component (14) is installed on the side of the power gear (6) away from the crushing box (1). A four-way valve (10) is provided between the two gas collecting components (14), and the bottom end of the four-way valve (10) is fixedly connected to a three-way valve (12). The number and size of the filter holes on the main arc filter (8) and the secondary arc filter (9) are the same. 2. A feed crushing device for feed production according to claim 1, characterized in that: the end of the three-way valve (12) close to the crushing box (1) passes through one side of the crushing box (1) and is fixedly connected to a lower air pipe (17), and the output end of the lower air pipe (17) is located at a lower position between the two crushing rollers (5). 3. A feed crushing device for feed production according to claim 1, characterized in that: the air collecting component (14) includes an air collecting tank (141), the air collecting tank (141) is located on one side of the power gear (6), and mounting frames (142) are installed at both upper and lower ends of the air collecting tank (141), and the other end of the mounting frame (142) is connected to one side of the crushing box (1). 4. A feed crushing device for feed production according to claim 3, characterized in that: a main shaft (143) is movably connected to the middle of the gas collecting tank (141), a rotating disk (144) is fixedly sleeved on the outer side of the main shaft (143), and blades (145) are fixedly installed at equal angles on one side of the rotating disk (144). 5. A feed crushing device for feed production according to claim 4, characterized in that: the relatively far ends of the two gas collecting tanks (141) are fixedly connected to an air intake valve (146), the relatively close ends of the two gas collecting tanks (141) are fixedly connected to an exhaust pipe (147), and the other ends of the two exhaust pipes (147) are connected to the left and right sides of the four-way valve (10). 6. A feed crushing device for feed production according to claim 1, characterized in that: the top end of the four-way valve (10) is fixedly connected to a first elbow (11), and the end of the first elbow (11) away from the four-way valve (10) passes through one side of the crushing box (1) and is fixedly connected to an upper air supply pipe (16) located above the two crushing rollers (5). 7. A feed crushing device for feed production according to claim 1, characterized in that: adjustment components (15) are installed on both sides of the left and right sides of the secondary arc filter (9), and the bottom end of the three-way valve (12) is fixedly connected to a second curved pipe (13), and the second curved pipe (13) is connected to the adjustment component (15). 8. A feed pulverizing device for feed production according to claim 7, characterized in that: the regulating component (15) comprises an air temporary storage pipe (151), the air temporary storage pipe (151) is connected to one side of the pulverizing box (1), the top end of the air temporary storage pipe (151) away from the pulverizing box (1) is fixedly connected to an air inlet (152), the bottom end of the air temporary storage pipe (151) away from the pulverizing box (1) is fixedly connected to an exhaust valve (153), and the top end of the air inlet (152) is connected to the bottom end of the second curved pipe (13). 9. A feed crushing device for feed production according to claim 8, characterized in that: a piston plate (154) is movably sleeved inside the temporary air storage tube (151), the piston plate (154) is displaced left and right relative to the temporary air storage tube (151), a piston rod (155) is installed on the side of the piston plate (154) close to the crushing box (1), and the end of the piston rod (155) away from the piston plate (154) passes through one side of the crushing box (1) and is connected to one side of the secondary arc filter (9). 10. A feed crushing device for feed production according to claim 9, characterized in that: the outer side surface of the piston rod (155) is movably sleeved with a return spring (156) located inside the air temporary storage tube (151), and the left and right ends of the return spring (156) are respectively connected to one end of the piston plate (154) and one end of the air temporary storage tube (151).