Fermented concentrated feed device for pets

Abstract

The present invention provides a pet feed fermentation and concentration device, and relates to the technical field of pet feed processing equipment, the pet feed fermentation and concentration device comprises: a bottom frame on which a fermentation and concentration tank is fixedly mounted; a rotating rod penetrates through the center position of the fermentation concentration tank and drives a stirring frame and a push plate to rotate, so that materials in the fermentation concentration tank are continuously stirred, and meanwhile, a rotating column and a guide groove are matched with a convex shaft, so that the stirring frame and the push plate intermittently move back and forth in the fermentation concentration tank in the continuous rotating process; furthermore, the rotating position and the rotating angle of the push plate are matched, so that materials introduced into the fermentation and concentration tank can be fully stirred in a more omnibearing manner, uniform transfer of material taking heat is ensured, the fermentation quality is improved, and the problem that when an existing pet fermentation and concentration feed device is used, due to the fact that an internal stirring system is imperfect, the stirring effect is poor is solved. And the problem that the product quality is influenced due to non-uniform material fermentation temperature distribution caused by unreasonable position, angle or rotating speed of the stirring paddle in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of pet feed processing equipment, and in particular to a pet fermentation and concentration feed device. Background Art

[0002] Fermentation of pet feed can effectively decompose anti-nutritional factors in feed and improve the digestion and absorption rate of feed. For example, some ingredients such as phytic acid in grain feed will affect the absorption of minerals by pets. After fermentation, the content of these anti-nutritional factors is reduced, and the utilization rate of nutrients in feed by pets can be increased by about 20%-30%. At the same time, fermentation can also produce some beneficial microbial metabolites, which help regulate the balance of pet intestinal flora and enhance pet immunity.

[0003] When using existing pet fermentation and concentration feed devices, due to the imperfect internal stirring system, the position, angle or speed of the stirring paddle may be unreasonable, resulting in uneven distribution of material fermentation temperature, affecting product quality; during the filtration process, large particles of impurities in the material are easily accumulated on the surface of the filter plate and clog the pores, causing the filtration flux to gradually decrease, and manual disassembly and cleaning are time-consuming and labor-intensive, reducing the working efficiency of the equipment; the traditional feeding method may take several hours to complete the transfer of a tank of fermented material, affecting the fermentation time of the next batch of materials, and easily leading to problems such as excessive fermentation or stagnation. Summary of the invention

[0004] The present invention relates to a pet fermentation and concentration feed device, in which a stirring frame and a push plate are driven to rotate by a rotating rod to realize continuous stirring of materials in a fermentation and concentration tank, and at the same time, a rotating column and a guide groove cooperate with a convex shaft to make the stirring frame and the push plate intermittently move back and forth in the fermentation and concentration tank during continuous rotation, and then cooperate with the rotation position and rotation angle of the push plate to fully stir the materials introduced into the fermentation and concentration tank in a more all-round manner, thereby ensuring uniform transfer of heat from the material and improving the fermentation quality.

[0005] The present invention provides a pet fermentation and concentration feed device, which specifically comprises: a base frame, on which a fermentation and concentration tank is fixedly mounted; a rotating rod is passed through the center of the fermentation and concentration tank; a fixing plate is fixedly mounted on the base frame, and the fixing plate is located behind the fermentation and concentration tank; a feeding pipe is provided at the rear of the top of the fermentation and concentration tank; a motor b is fixedly mounted on the right side of the outer peripheral surface of the feeding pipe; a filter plate is arranged in the feeding pipe; a feeding pipe is provided at the front of the bottom of the fermentation and concentration tank; a floating plate is arranged in the feeding pipe;

[0006] A support frame is fixedly installed at the front of the fermentation and concentration tank, a mounting block is arranged at the front end position of the top of the support frame, and a convex shaft is arranged at the top of the mounting block.

[0007] Preferably, the rotating rod is provided with two limit grooves on the outer circumferential surface near the rear end, and the two limit grooves are distributed in a symmetrical manner, a rotating column is provided at the front end of the rotating rod, a guide groove is provided on the outer circumferential surface of the rotating column, and the convex shaft is slidably connected to the rotating column through the guide groove, a stirring frame is provided at the middle section of the rotating rod, and the stirring frame is located in the fermentation and concentration tank, and a push plate is fixedly installed on the round rod of the stirring frame, and the push plates are distributed in a linear array.

[0008] Preferably, a first bearing frame is fixedly installed on the top of the fixed plate, a driven pulley is provided on the first bearing frame, a bearing sleeve is provided at the center position of the driven pulley, and the driven pulley is rotatably connected to the first bearing frame through the bearing sleeve, two limit blocks are provided on the inner circumference of the bearing sleeve, the bearing sleeve is mounted on the rotating rod, and the limit block is slidably connected to the rotating rod through a limit groove.

[0009] Preferably, a second bearing frame is fixedly installed on the top of the fixed plate, and the second bearing frame is located to the right of the first bearing frame. A rotating shaft a is rotatably installed on the second bearing frame. A driving pulley is provided on the rotating shaft a, and the driving pulley is connected to the driven pulley through a belt. A motor a is provided at the front end of the rotating shaft a, and the motor a is fixedly installed on the fixed plate.

[0010] Preferably, two fixed ring frames are installed in the feeding tube, and the two fixed ring frames are distributed in an upper and lower symmetrical manner, two sliding rods are provided between the two fixed ring frames, and the two sliding rods are distributed in a vertically parallel manner, and compression springs are mounted on the sliding rods.

[0011] Preferably, the motor b is provided with a rotating shaft b, and the rotating shaft b is rotatably connected to the feeding pipe through a bearing, and a cam is provided on the rotating shaft b, and the cam is located below the filter plate.

[0012] Preferably, two support blocks are provided on the outer ring frame of the filter plate, and the two support blocks are distributed in a symmetrical manner. A transmission frame is provided at the center position of the bottom of the filter plate. The sliding rod slides through the support block, and the compression spring is supported between the upper fixed ring frame and the support block, and the cam is connected to the transmission frame in transmission.

[0013] Preferably, a motor c is fixedly installed on the rear part of the outer circumference of the feeding tube, an inner cylinder is fixedly installed inside the feeding tube, the inner cylinder is a cylindrical through-cavity structure, a feeding trough is provided at the top of the inner cylinder, and a fixing frame is provided inside the feeding tube.

[0014] Preferably, the motor c is provided with a rotating shaft c, and the rotating shaft c is rotatably connected to the feeding pipe through a bearing, and an active bevel gear is provided at the end of the rotating shaft c;

[0015] The fixed frame is a rectangular frame structure, and two limiting round rods are arranged between the two cross bars of the fixed frame, and the two limiting round rods are distributed in a vertical and parallel manner. A reciprocating screw is rotatably installed between the two cross bars of the fixed frame, and a driven bevel gear is arranged at the bottom end of the reciprocating screw, and the driven bevel gear is meshed and connected with the driving bevel gear.

[0016] Preferably, the floating plate is provided with two limiting through holes, and the two limiting through holes are distributed in a symmetrical manner, and the limiting round rod slides through the limiting through holes, a guide sleeve is provided at the center position of the floating plate, and two transmission shafts are provided on the inner circumference of the guide sleeve, and the two transmission shafts are distributed in a symmetrical manner, the guide sleeve is sleeved on the reciprocating screw, and the transmission shaft is meshingly connected with the reciprocating screw.

[0017] The present invention provides a pet fermentation concentrated feed device, which has the following beneficial effects:

[0018] In the present invention, the motor a provides power to drive the active pulley to rotate, and the belt and the driven pulley are used for transmission. The limit block and the limit groove cooperate with each other, so that the rotating rod drives the stirring frame and the push plate to rotate, so as to realize continuous stirring of the materials in the fermentation and concentration tank. At the same time, the rotating column and the guide groove cooperate with the convex shaft, so that the stirring frame and the push plate can intermittently move back and forth in the fermentation and concentration tank during the continuous rotation process, and then cooperate with the rotation position and rotation angle of the push plate, so that the materials introduced into the fermentation and concentration tank can be more fully stirred in an all-round way, thereby ensuring that the heat of the material is evenly transferred and the fermentation quality is improved.

[0019] In addition, the motor b provides power to drive the rotating shaft b and the cam to rotate. Through the cooperation between the cam and the transmission frame and the elastic effect of the compression spring, the filter plate can be intermittently adjusted up and down along the slide rod. By vibrating the filter plate up and down, the particles accumulated around the pores of the filter plate can be loosened and fall off, thereby keeping the filter channel unobstructed, eliminating the trouble of manual disassembly and cleaning, and achieving higher work efficiency.

[0020] In addition, the motor C provides power to drive the active bevel gear to rotate, which can make the driven bevel gear and the reciprocating screw rotate in coordination. The reciprocating screw is meshed with the transmission shaft to drive the floating plate to float up and down along the limiting round rod. When the floating plate reaches the upper position, the material can pass through the discharge chute to reach the inner cylinder, and then the floating plate will continuously push the material during the descending process, thereby realizing rapid material discharge, avoiding the problem of excessive fermentation or stagnation due to slow discharge, ensuring the consistency of product quality and efficient and stable production operation, and improving production efficiency and product output. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0022] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0023] In the attached picture:

[0024] Figure 1 A schematic diagram showing the overall structure of the present application;

[0025] Figure 2 A schematic diagram showing the support frame and the rotating rod of the present application in a disassembled state;

[0026] Figure 3 A schematic diagram showing the disassembled state of the first bearing frame and the second bearing frame of the present application is shown;

[0027] Figure 4 A schematic diagram showing a cross-sectional view of a feeding tube of the present application is shown;

[0028] Figure 5 A schematic diagram showing the disassembled state of the fixed ring frame, the motor b, and the filter plate of the present application;

[0029] Figure 6 A schematic diagram of a feed pipe of the present application is shown;

[0030] Figure 7 A schematic diagram showing the motor c, the fixing frame and the floating plate of the present application is shown;

[0031] Figure 8 A schematic diagram of a floating plate of the present application is shown.

[0032] List of reference numerals:

[0033] 1. Base frame; 2. Fermentation and concentration tank; 201. Support frame; 202. Convex shaft; 3. Rotating rod; 301. Limiting groove; 302. Rotating column; 303. Guide groove; 304. Stirring frame; 305. Push plate; 4. Fixed plate; 401. First bearing frame; 4011. Driven pulley; 4012. Bearing sleeve; 4013. Limiting block; 402. Second bearing frame; 4021. Rotating shaft a; 4022. Driving pulley; 4023. Motor a; 5. Feeding pipe; 501. Fixed ring frame; 502. Sliding Rod; 503, compression spring; 6, motor b; 601, rotating shaft b; 602, cam; 7, filter plate; 701, support block; 702, transmission frame; 8, feed pipe; 801, motor c; 8011, rotating shaft c; 8012, active bevel gear; 802, inner cylinder; 803, feed chute; 804, fixed frame; 8041, limiting round rod; 8042, reciprocating screw rod; 8043, driven bevel gear; 9, floating plate; 901, limiting through hole; 902, guide sleeve; 903, transmission shaft. DETAILED DESCRIPTION

[0034] Example 1: Please refer to Figures 1 to 8 :

[0035] The present invention proposes a pet fermentation and concentration feed device, comprising: a base frame 1, on which a fermentation and concentration tank 2 is fixedly installed; a rotating rod 3 is passed through the center of the fermentation and concentration tank 2; a fixing plate 4 is fixedly installed on the base frame 1, and the fixing plate 4 is located behind the fermentation and concentration tank 2; a feeding pipe 5 is provided at the rear position of the top of the fermentation and concentration tank 2; a motor b6 is fixedly installed on the right side of the outer peripheral surface of the feeding pipe 5; a filter plate 7 is provided in the feeding pipe 5; a feeding pipe 8 is provided at the front position of the bottom of the fermentation and concentration tank 2; a floating plate 9 is provided in the feeding pipe 8;

[0036] A support frame 201 is fixedly installed at the front of the fermentation and concentration tank 2, a mounting block is provided at the front end of the top of the support frame 201, and a convex shaft 202 is provided at the top of the mounting block.

[0037] In the present disclosure, Figure 2 and Figure 3 As shown, two limiting grooves 301 are provided on the outer circumference of the rear end of the rotating rod 3, and the two limiting grooves 301 are distributed in a symmetrical manner, a rotating column 302 is provided at the front end of the rotating rod 3, a guide groove 303 is provided on the outer circumference of the rotating column 302, and the convex shaft 202 is slidably connected with the rotating column 302 through the guide groove 303, a stirring frame 304 is provided at the middle section of the rotating rod 3, and the stirring frame 304 is located in the fermentation concentration tank 2, and a push plate 305 is fixedly installed on the round rod of the stirring frame 304, and the push plates 305 are distributed in a linear array manner;

[0038] A first bearing frame 401 is fixedly installed on the top of the fixing plate 4, a driven pulley 4011 is provided on the first bearing frame 401, a bearing sleeve 4012 is provided at the center of the driven pulley 4011, and the driven pulley 4011 is rotatably connected to the first bearing frame 401 through the bearing sleeve 4012, two limit blocks 4013 are provided on the inner circumference of the bearing sleeve 4012, the bearing sleeve 4012 is sleeved on the rotating rod 3, and the limit block 4013 is slidably connected to the rotating rod 3 through the limit groove 301;

[0039] A second bearing frame 402 is fixedly installed on the top of the fixed plate 4, and the second bearing frame 402 is located on the right side of the first bearing frame 401. A rotating shaft a4021 is rotatably installed on the second bearing frame 402. A driving pulley 4022 is provided on the rotating shaft a4021, and the driving pulley 4022 is connected to the driven pulley 4011 through a belt. A motor a4023 is provided at the front end of the rotating shaft a4021, and the motor a4023 is fixedly installed on the fixed plate 4. In the present invention, the motor a4023 provides power to drive the driving pulley 4022 to rotate, and the belt is used to The rotating rod 3 drives the stirring frame 304 and the push plate 305 to rotate through the cooperation of the limit block 4013 and the limit groove 301, so as to realize continuous stirring of the materials in the fermentation and concentration tank 2. At the same time, the rotating column 302 and the guide groove 303 cooperate with the convex shaft 202, so that the stirring frame 304 and the push plate 305 can intermittently move back and forth in the fermentation and concentration tank 2 during the continuous rotation, and then cooperate with the rotation position and rotation angle of the push plate 305 to fully stir the materials introduced into the fermentation and concentration tank 2 in a more all-round manner.

[0040] In the present disclosure, Figure 4 and Figure 5 As shown, two fixed ring frames 501 are installed in the feeding tube 5, and the two fixed ring frames 501 are distributed in an upper and lower symmetrical manner, and two slide bars 502 are arranged between the two fixed ring frames 501, and the two slide bars 502 are distributed in a vertically parallel manner, and a compression spring 503 is sleeved on the slide bar 502;

[0041] The motor b6 is provided with a rotating shaft b601, and the rotating shaft b601 is rotatably connected to the feeding tube 5 through a bearing, and the rotating shaft b601 is provided with a cam 602, and the cam 602 is located below the filter plate 7;

[0042] Two support blocks 701 are provided on the peripheral ring frame of the filter plate 7, and the two support blocks 701 are distributed in a symmetrical manner. A transmission frame 702 is provided at the center position of the bottom of the filter plate 7. The slide rod 502 slides through the support block 701, and the compression spring 503 is supported between the upper fixed ring frame 501 and the support block 701, and the cam 602 is connected to the transmission frame 702 in transmission. In the present invention, the motor b6 provides power to drive the rotating shaft b601 and the cam 602 to rotate. Through the cooperation between the cam 602 and the transmission frame 702, and the elastic effect of the compression spring 503, the filter plate 7 can be intermittently adjusted up and down along the slide rod 502. By vibrating the filter plate 7 up and down, the particles accumulated around the pores of the filter plate 7 can be loosened and fall off, thereby keeping the filter channel unobstructed.

[0043] Embodiment 2, based on embodiment 1, as Figures 6 to 8As shown, a motor c801 is fixedly installed at the rear of the outer circumference of the feeding tube 8, an inner cylinder 802 is fixedly installed inside the feeding tube 8, the inner cylinder 802 is a cylindrical through-cavity structure, and a feeding trough 803 is provided at the top of the inner cylinder 802, and a fixing frame 804 is provided inside the feeding tube 8;

[0044] The motor c801 is provided with a rotating shaft c8011, and the rotating shaft c8011 is rotatably connected to the feeding tube 8 through a bearing, and an active bevel gear 8012 is provided at the end of the rotating shaft c8011;

[0045] The fixed frame 804 is a rectangular frame structure, and two limiting round rods 8041 are arranged between the two cross bars of the fixed frame 804, and the two limiting round rods 8041 are distributed in a vertical parallel manner. A reciprocating screw 8042 is rotatably installed between the two cross bars of the fixed frame 804, and a driven bevel gear 8043 is arranged at the bottom end of the reciprocating screw 8042, and the driven bevel gear 8043 is meshed and connected with the driving bevel gear 8012;

[0046] The floating plate 9 is provided with two limiting through holes 901, and the two limiting through holes 901 are distributed in a symmetrical manner, and the limiting round rod 8041 slides through the limiting through holes 901, and a guide sleeve 902 is provided at the center of the floating plate 9, and two transmission shafts 903 are provided on the inner circumference of the guide sleeve 902, and the two transmission shafts 903 are distributed in a symmetrical manner, and the guide sleeve 902 is sleeved on the reciprocating screw rod 8042, and the transmission shaft 903 is meshed and connected with the reciprocating screw rod 8042. Machine c801 provides power to drive the active bevel gear 8012 to rotate, which can make the driven bevel gear 8043 and the reciprocating screw 8042 rotate in coordination. Through the meshing transmission of the reciprocating screw 8042 and the transmission shaft 903, the floating plate 9 can be driven to float up and down along the limiting round rod 8041. When the floating plate 9 reaches the upper position, the material can pass through the discharge chute 803 to reach the inner cylinder 802, and then the floating plate 9 will continuously push the material during the descending process, thereby realizing the rapid discharge process of the material.

[0047] Working principle of this embodiment: First, feed raw materials and fermentation agent are added into the fermentation concentration tank 2 through the feed pipe 5. The stirring system is started to mix the feed and fermentation agent thoroughly and evenly; the motor b6 provides power to drive the rotating shaft b601 and the cam 602 to rotate, and the cam 602 and the transmission frame 702 cooperate with each other, and the elastic effect of the compression spring 503 can make the filter plate 7 intermittently adjust up and down along the slide bar 502, and the filter plate 7 vibrates up and down, so that the particles accumulated around the pores of the filter plate 7 can be loosened and fall off, so as to keep the filter channel unobstructed; the motor a4023 provides power to drive the driving pulley 4022 to rotate, and the belt and the transmission frame 702 are used to drive the driving pulley 4022 to rotate. The driving pulley 4011 is used for transmission, and the limit block 4013 and the limit groove 301 cooperate with each other, so that the rotating rod 3 drives the stirring frame 304 and the push plate 305 to rotate, thereby realizing continuous stirring of the materials in the fermentation and concentration tank 2. At the same time, the rotating column 302 and the guide groove 303 cooperate with the convex shaft 202, so that the stirring frame 304 and the push plate 305 can intermittently move back and forth in the fermentation and concentration tank 2 during the continuous rotation, and then cooperate with the rotation position and rotation angle of the push plate 305, so that the materials introduced into the fermentation and concentration tank 2 can be more fully stirred in an all-round manner.

[0048] When unloading, the motor c801 provides power to drive the active bevel gear 8012 to rotate, which can make the driven bevel gear 8043 and the reciprocating screw 8042 rotate in coordination. The reciprocating screw 8042 is meshed with the transmission shaft 903 to drive the floating plate 9 to float up and down along the limiting round rod 8041. When the floating plate 9 reaches the upper position, the material can pass through the unloading chute 803 to reach the inner cylinder 802, and then the floating plate 9 will continuously push the material during the descent, thereby realizing the rapid unloading process of the material.

Claims

1. A pet fermentation and concentration feed device, characterized in that: include: A base frame, on which a fermentation and concentration tank is fixedly mounted; a rotating rod is passed through the center of the fermentation and concentration tank; a fixed plate is fixedly mounted on the base frame, and the fixed plate is located behind the fermentation and concentration tank; a feeding pipe is provided at the rear of the top of the fermentation and concentration tank; a motor b is fixedly mounted on the right side of the outer peripheral surface of the feeding pipe; a filter plate is provided in the feeding pipe; a feeding pipe is provided at the front of the bottom of the fermentation and concentration tank; a floating plate is provided in the feeding pipe; A support frame is fixedly installed at the front of the fermentation and concentration tank, a mounting block is arranged at the front end position of the top of the support frame, and a convex shaft is arranged at the top of the mounting block.

2. A pet fermentation concentrated feed device according to claim 1, characterized in that: The rotating rod is provided with two limit grooves on the outer circumferential surface near the rear end, and the two limit grooves are distributed in a symmetrical manner. A rotating column is provided at the front end of the rotating rod, and a guide groove is provided on the outer circumferential surface of the rotating column, and the convex shaft is slidably connected to the rotating column through the guide groove. A stirring frame is provided at the middle section of the rotating rod, and the stirring frame is located in the fermentation and concentration tank. A push plate is fixedly installed on the round rod of the stirring frame, and the push plates are distributed in a linear array.

3. A pet fermentation concentrated feed device according to claim 2, characterized in that: A first bearing frame is fixedly installed on the top of the fixed plate, and a driven pulley is arranged on the first bearing frame. A bearing sleeve is arranged at the center of the driven pulley, and the driven pulley is rotatably connected to the first bearing frame through the bearing sleeve. Two limit blocks are arranged on the inner circumference of the bearing sleeve, and the bearing sleeve is sleeved on the rotating rod, and the limit block is slidably connected to the rotating rod through a limit groove.

4. A pet fermentation concentrated feed device according to claim 3, characterized in that: A second bearing frame is fixedly installed on the top of the fixed plate, and the second bearing frame is located on the right of the first bearing frame. A rotating shaft a is rotatably installed on the second bearing frame. A driving pulley is provided on the rotating shaft a, and the driving pulley is connected to the driven pulley through a belt. A motor a is provided at the front end of the rotating shaft a, and the motor a is fixedly installed on the fixed plate.

5. A pet fermentation concentrated feed device according to claim 1, characterized in that: Two fixed ring frames are installed in the feeding tube, and the two fixed ring frames are distributed in an upper and lower symmetrical manner. Two sliding rods are arranged between the two fixed ring frames, and the two sliding rods are distributed in a vertically parallel manner. Compression springs are sleeved on the sliding rods.

6. A pet fermentation and concentrated feed device according to claim 5, characterized in that: The motor b is provided with a rotating shaft b, and the rotating shaft b is rotatably connected with the feeding pipe through a bearing, and a cam is provided on the rotating shaft b, and the cam is located below the filter plate.

7. A pet fermentation concentrated feed device according to claim 6, characterized in that: Two support blocks are arranged on the ring frame around the filter plate, and the two support blocks are distributed symmetrically. A transmission frame is arranged at the center of the bottom of the filter plate. The sliding rod slides through the support block, and the compression spring is supported between the upper fixed ring frame and the support block, and the cam is connected to the transmission frame in transmission.

8. The pet fermentation and concentration feed device according to claim 1, characterized in that: A motor c is fixedly installed on the rear part of the outer peripheral surface of the feeding tube, an inner cylinder is fixedly installed inside the feeding tube, the inner cylinder is a cylindrical through-cavity structure, a feeding trough is arranged at the top of the inner cylinder, and a fixing frame is arranged inside the feeding tube.

9. A pet fermentation concentrated feed device according to claim 8, characterized in that: The motor c is provided with a rotating shaft c, and the rotating shaft c is rotatably connected to the feeding pipe through a bearing, and an active bevel gear is provided at the end of the rotating shaft c; The fixed frame is a rectangular frame structure, and two limiting round rods are arranged between the two cross bars of the fixed frame, and the two limiting round rods are distributed in a vertical and parallel manner. A reciprocating screw is rotatably installed between the two cross bars of the fixed frame, and a driven bevel gear is arranged at the bottom end of the reciprocating screw, and the driven bevel gear is meshed and connected with the driving bevel gear.

10. A pet fermentation concentrated feed device according to claim 9, characterized in that , The floating plate is provided with two limiting through holes, and the two limiting through holes are distributed in a symmetrical manner, and the limiting round rod slides through the limiting through holes. A guide sleeve is provided at the center position of the floating plate, and two transmission shafts are provided on the inner circumference of the guide sleeve, and the two transmission shafts are distributed in a symmetrical manner. The guide sleeve is sleeved on the reciprocating screw, and the transmission shaft is meshed and connected with the reciprocating screw.

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