Tubular conveying device for thick broad-bean sauce

Abstract

The utility model discloses a thick broad-bean sauce pipe type conveying device which comprises a base, a conveying barrel is arranged on the base, a conveying device is arranged on the base, the conveying device comprises an air pipe, an air pump, a communicating pipe and an output pipe, the two ends of the output pipe are connected with the communicating pipe and the conveying barrel, and one end of the air pipe is connected with a control device. The control device comprises a connecting pipe, a control sleeve, a control block, a connecting frame, a movable sleeve, an edge sleeve, an edge rod, a fixed rod, a sliding block and a sliding groove, the control block is arranged in the connecting pipe, the edge rod is connected with the control sleeve through the connecting frame, the edge sleeve is connected with the movable sleeve through the fixed rod, the sliding groove is formed in the movable sleeve, and the sliding block is connected to one side of the control block. A limiting mechanism is arranged on the outer side of the connecting pipe and comprises a rotating sleeve, inserting rods and inserting grooves, the rotating sleeve is arranged on the outer side of the connecting pipe in a sleeving mode through threads, the inserting rods are arranged on the side wall of the control sleeve, the inserting grooves are formed in the outer wall of the connecting pipe, efficient and uniform conveying is achieved in cooperation with airflow conveying, air pressure control is accurate, and the structure is stable.

Description

Technical Field

[0001] This utility model relates to the field of soybean paste conveying technology, and more specifically, to a tubular conveying device for soybean paste. Background Technology

[0002] In the field of tubular conveying devices for fermented soybean paste, existing technologies face several pressing problems that urgently need to be addressed. These problems significantly impact the quality and efficiency of material conveying, primarily manifested in the following aspects:

[0003] First, the simple spiral conveyor plate structure used in existing conveying devices has significant shortcomings when handling special materials such as fermented soybean paste. Due to the high viscosity of fermented soybean paste and the presence of a large number of solid particles, these material characteristics make it extremely easy for it to adhere to the inner wall surface of the conveying cylinder during the conveying process. This adhesion not only leads to uneven material conveying, but more seriously, it causes gradual blockage of the conveying channel. As the adhered material accumulates, it will reduce conveying efficiency on the one hand, and may also cause some material to remain in the conveying cylinder for a long time, affecting product quality and even causing equipment malfunctions, resulting in serious economic losses to production.

[0004] Secondly, although some improved equipment has introduced pneumatic conveying systems in an attempt to improve the fluidity of fermented soybean paste through the driving force of high-pressure gas, these devices still have significant defects in gas conveying control. These devices generally use simple air pipe systems with overly basic internal structures and lack necessary adjustment mechanisms. In actual use, they cannot flexibly adjust the conveying speed of high-pressure gas according to the differences in viscosity, particle size, and production process requirements of different batches of fermented soybean paste. This rigid pneumatic conveying method not only affects the conveying effect but may also cause material splashing or poor conveying due to improper air pressure, seriously affecting production efficiency and product quality.

[0005] More seriously, while some equipment incorporates gas conveying speed adjustment functions in its design, attempting to achieve controllability of high-pressure gas conveying speed through mechanical structures to improve the equipment's flexibility and adaptability, these improved designs still have significant flaws. Due to their overly simplistic structural design, these adjustment devices face serious stability problems in actual use. First, the high-pressure gas generates continuous and intense impact forces during conveying, which put enormous pressure on the adjustment structure. Second, the equipment generates continuous mechanical vibrations during operation. Under the continuous action of these external forces, the simple adjustment structure is prone to loosening, and the connecting parts may gradually experience slight displacement. More seriously, once the adjustment structure shifts, it not only alters the preset airflow parameters but may also cause unstable conveying speeds, affecting the conveying effect. This parameter instability not only reduces conveying efficiency but may also lead to uneven material conveying, posing serious quality risks to production. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the problems existing in the prior art, this utility model provides a tubular conveying device for fermented soybean paste to solve the technical problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a tubular conveying device for fermented soybean paste, comprising a base, on which a conveying cylinder is installed. The device is characterized in that: a conveying device is provided on the base, comprising an air pipe, an air pump, a connecting pipe, and an output pipe; the air pipe is connected to the input end of the connecting pipe; both ends of the plurality of output pipes are respectively connected to the connecting pipe and the conveying cylinder; the air pump is detachably installed inside the base; one end of the air pipe is connected to a control device; the control device comprises a connecting pipe, a control sleeve, a control block, a connecting frame, a moving sleeve, a prism sleeve, a prism rod, a fixed rod, a slider, and a slide groove; one end of the connecting pipe is connected to the output end of the air pump; and both ends of the control sleeve are respectively connected to the connecting pipe. The air tube is rotatably connected, and multiple control blocks are movably disposed inside the connecting tube. The prism rod is fixedly connected to the inner wall of the control sleeve through a connecting bracket. The outer wall of the prism sleeve is fixedly connected to the inner wall of the movable sleeve through a fixed rod. The outer wall of the movable sleeve is movably connected to the inner wall of the connecting tube through threads. A sliding groove is formed on the movable sleeve. The slider is connected to one side of the control block and slides in the sliding groove. A limiting mechanism is provided on the outside of the connecting tube. The limiting mechanism includes a rotating sleeve, a plug rod, and a slot. The rotating sleeve is movably sleeved on the outside of the connecting tube through threads. Multiple plug rods are slidably disposed on the side wall of the control sleeve. Multiple slots are formed on the outer wall of the connecting tube, and the inner end of the plug rod is inserted into the slot.

[0010] The present invention is further configured such that a plurality of control slots are provided inside the connecting pipe, a control plate is connected to one side of the control block, the control plate is slidably positioned in the control slot, and both the control plate and the control slot are designed with an inclined structure.

[0011] The present invention is further configured such that a push spring is connected to the other side of the control block, and a push block is connected to the other end of the push spring.

[0012] The present invention is further configured such that a movable spring is provided on the outer side of the control sleeve, and the outer end of the insertion rod is connected to the outer wall of the control sleeve through the movable spring.

[0013] The present invention is further configured such that a feeding bin is connected to the top of the feeding cylinder, a discharging bin is provided at the bottom of one side of the feeding cylinder, and a feeding frame is rotatably provided in the feeding bin. The above components can realize stable feeding of materials and prevent material backflow caused by gas conveying.

[0014] The present invention is further configured such that a rotating shaft is rotatably provided inside the conveying cylinder, and a conveying frame and connecting rods are fixedly provided on the outside of the rotating shaft. The conveying frame has a spiral structure design, and multiple connecting rods are arranged in a spiral array on the outside of the rotating shaft. A scraper is connected to the other end of the connecting rod. The above components enable the scraping of materials adhering to the inner wall of the conveying cylinder and ensure the conveying effect.

[0015] The present invention is further configured such that a motor is detachably mounted on the base, wherein one motor is detachably mounted on the side of the feed hopper and the other motor is detachably mounted on the side of the conveying cylinder, and the motor configuration provides stable power support for the operation of the equipment.

[0016] The present invention is further configured such that a reducer is detachably provided on the base, the output end of the motor installed on one side of the conveying cylinder is connected to one end of the rotating shaft through the reducer, and the output end of the motor installed on one side of the feeding hopper is connected to one end of the feeding frame through the reducer. The reducer can flexibly adjust the transmission ratio of the motor.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a tubular conveying device for fermented soybean paste, which has the following beneficial effects:

[0019] 1. The conveying device forms a highly efficient dual conveying system through the coordinated operation of air pipes, air pumps, connecting pipes, and output pipes set on the base. The spiral conveying rack design inside the conveying cylinder not only realizes the conveying of materials, but the scraper connected to the rotating shaft through the connecting rod can also effectively remove the adhering substances on the inner wall. At the same time, the evenly arranged multiple output pipes realize multi-point airflow boosting. Combined with the subsequent processing of the feeding hopper, feeding rack, and unloading hopper, it effectively solves the problems of easy adhesion and uneven conveying of bean paste under the traditional single conveying method, and significantly improves the conveying uniformity and processing efficiency.

[0020] 2. The innovatively designed control device employs a precise combination of components such as connecting pipes, control sleeves, control blocks, connecting frames, moving sleeves, prism sleeves, prism rods, and fixed rods to form a precise airflow regulation system. The inclined structure design of the control slot and control plate, through which the control sleeve controls the rotation of the moving sleeve to achieve precise displacement of the control block, and through the cooperation of components such as push springs, push blocks, and sliders, changes the gas flow volume, thereby achieving precise regulation of airflow speed and intensity. This ensures a smooth and controllable regulation process and completely solves the problem of the inflexible adjustment of airflow intensity in traditional equipment.

[0021] 3. The design of the limiting mechanism constructs a reliable dual locking system through the coordinated work of components such as the rotating sleeve, the insertion rod, and the slot. The rotating sleeve makes contact with the limiting mechanism, and then the insertion rod and the slot cooperate to move together. With the elastic connection of the movable spring, the control sleeve is precisely locked. In particular, through the cooperation of the insertion rod and the slot, and the pre-tightening force provided by the movable spring, the position of the control sleeve can be locked after adjustment. Then, the rotating sleeve applies a limit to the insertion rod. This dual locking mechanism completely solves the problem of easy loosening and displacement of the adjustment structure in the existing technology, ensuring the stability of airflow parameters and guaranteeing the reliability of the delivery quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a tubular conveying device for fermented soybean paste according to this utility model;

[0023] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0024] Figure 3 for Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0025] Figure 4 This is a cross-sectional structural diagram of the control device and limiting mechanism in this utility model;

[0026] Figure 5 for Figure 4 A magnified schematic diagram of the local structure at point B;

[0027] Figure 6This is a cross-sectional view of the control sleeve and the movable sleeve in this utility model.

[0028] In the diagram: 1. Base; 2. Feeding cylinder; 3. Air pipe; 4. Air pump; 5. Connecting pipe; 6. Output pipe; 7. Connecting pipe; 8. Control sleeve; 9. Control block; 10. Connecting frame; 11. Moving sleeve; 12. Prism sleeve; 13. Prism rod; 14. Fixed rod; 15. Slider; 16. Slide groove; 17. Rotating sleeve; 18. Insert rod; 19. Slot; 20. Control groove; 21. Control board; 22. Push spring; 23. Push block; 24. Movable spring; 25. Feeding bin; 26. Discharge bin; 27. Feeding rack; 28. Rotating shaft; 29. ​​Feeding rack; 30. Connecting rod; 31. Scraper; 32. Motor; 33. Reducer. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0032] Please see Figures 1-6A tubular conveying device for fermented soybean paste includes a base 1, on which a conveying cylinder 2 is mounted. The device is characterized by a conveying mechanism on the base 1, comprising an air pipe 3, an air pump 4, a connecting pipe 5, and output pipes 6. The air pipe 3 is connected to the input end of the connecting pipe 5. Multiple output pipes 6 are connected at both ends to the connecting pipe 5 and the conveying cylinder 2, respectively. The air pump 4 is detachably installed inside the base 1. One end of the air pipe 3 is connected to a control device, which includes a connecting pipe 7, a control sleeve 8, a control block 9, a connecting frame 10, a movable sleeve 11, a prism sleeve 12, a prism rod 13, a fixed rod 14, a slider 15, and a chute 16. One end of the connecting pipe 7 is connected to the output end of the air pump 4. The two ends of the control sleeve 8 are rotatably connected to the connecting pipe 7 and the air pipe 3, respectively. Multiple output pipes 6 are connected at both ends to the connecting pipe 7 and the air pipe 3, respectively. The control block 9 is movably disposed inside the connecting pipe 7. The prism rod 13 is fixedly connected to the inner wall of the control sleeve 8 through the connecting bracket 10. The outer wall of the prism sleeve 12 is fixedly connected to the inner wall of the movable sleeve 11 through the fixing rod 14. The outer wall of the movable sleeve 11 is movably connected to the inner wall of the connecting pipe 7 through threads. The slide groove 16 is opened on the movable sleeve 11. The slider 15 is connected to one side of the control block 9 and slides in the slide groove 16. A limit mechanism is provided on the outside of the connecting pipe 7. The limit mechanism includes a rotating sleeve 17, a plug rod 18 and a slot 19. The rotating sleeve 17 is movably sleeved on the outside of the connecting pipe 7 through threads. Multiple plug rods 18 are slidably disposed on the side wall of the control sleeve 8. Multiple slots 19 are opened on the outer wall of the connecting pipe 7 and the inner end of the plug rod 18 is inserted into the slot 19.

[0033] Multiple control slots 20 are provided inside the connecting pipe 7. A control plate 21 is connected to one side of the control block 9. The control plate 21 slides in the control slot 20, and both the control plate 21 and the control slot 20 are designed with an inclined structure.

[0034] A push spring 22 is connected to the other side of the control block 9, and a push block 23 is connected to the other end of the push spring 22.

[0035] A movable spring 24 is provided on the outside of the control sleeve 8, and the outer end of the insertion rod 18 is connected to the outer wall of the control sleeve 8 through the movable spring 24.

[0036] In this embodiment, when the compressed gas delivery flow rate needs to be adjusted according to requirements, the rotating sleeve 17 is first rotated clockwise, causing it to move along the threaded line on the outer wall of the connecting pipe 7. Then, the inner wall of the rotating sleeve 17 no longer limits the outer end of the insertion rod 18. Next, the control sleeve 8 is rotated, causing the multiple insertion rods 18 slidably disposed on the side wall to move. Then, the inner wall of the slot 19 opened on the outer side of the connecting pipe 7 presses against one end of the insertion rod 18. Due to the rounded corner treatment at the end of the insertion rod 18 and the rounded corner design at the edge of the slot 19, one end of the insertion rod 18 will slide out of the slot 19, and the other end of the insertion rod 18 will move. Spring 24 is stretched, and simultaneously, control sleeve 8 drives the prism rod 13 to rotate via connecting frame 10. The prism rod 13 then drives the outer prism sleeve 12 to rotate. The prism sleeve 12 then drives the movable sleeve 11 to rotate via the fixed rod 14 connected to the outer wall. Since the outer wall of the movable sleeve 11 and the inner wall of the connecting pipe 7 are connected by threads, the movable sleeve 11 drives the prism sleeve 12 to slide along the prism rod 13 via the fixed rod 14. The movable sleeve 11 then pushes the control block 9 to slide, and the control block 9 then drives the control plate 21 on the other side to slide along the control groove 20. Since the control groove 20... Both the control plate 0 and the control board 21 are designed with an inclined structure. As the control plate 21 slides, it simultaneously pulls the control block 9 inwards. The control block 9 also causes the slider 15 to slide along the groove 16. Then, the push block 23, connected to the control block 9 via the push spring 22, gradually comes into contact with it. As the control block 9 continues to move, the control block 9 and the push block 23 work together to compress the push spring 22, changing the gap in the push spring 22 and altering the cross-sectional area of ​​the corresponding position within the connecting pipe 7. This changes the volume of gas passing through, thereby adjusting the gas delivery speed. Once the desired flow rate is achieved, stop rotating the control sleeve 8 and allow the movable spring 24 to drive the insertion rod 18 to slide and reset. Then, one end of the insertion rod 18 will be inserted into the corresponding slot 19. Then, reverse the rotating sleeve 17 so that the rotating sleeve 17 moves and resets along the thread set on the outer wall of the connecting pipe 7. Then, the inner wall of the rotating sleeve 17 limits the outer end of the insertion rod 18 again, so that the insertion rod 18 will not move. Then, the insertion rod 18 and the slot 19 cooperate to limit the control sleeve 8, so that the control sleeve 8 will not rotate, thereby ensuring the structural stability after the flow rate is adjusted, thus ensuring the stable use of the equipment and preventing fluctuations in the adjusted flow rate.

[0037] Please see Figure 1 and Figure 2 As a further implementation of the overall equipment: a feeding bin 25 is connected to the top of the feeding cylinder 2, a discharging bin 26 is provided at the bottom of one side of the feeding cylinder 2, and a feeding rack 27 is rotatably provided in the feeding bin 25.

[0038] The material conveying cylinder 2 is equipped with a rotating shaft 28. A material conveying frame 29 and a connecting rod 30 are fixedly provided on the outside of the rotating shaft 28. The material conveying frame 29 has a spiral structure design. Multiple connecting rods 30 are arranged in a spiral array on the outside of the rotating shaft 28. A scraper 31 is connected to the other end of the connecting rod 30.

[0039] A motor 32 is detachably mounted on the base 1. One motor 32 is detachably mounted on one side of the feed hopper 25, and the other motor 32 is detachably mounted on one side of the conveying cylinder 2.

[0040] A reducer 33 is detachably installed on the base 1. The output end of the motor 32 installed on one side of the feeding cylinder 2 is connected to one end of the rotating shaft 28 through the reducer 33. The output end of the motor 32 installed on one side of the feeding bin 25 is connected to one end of the feeding rack 27 through the reducer 33.

[0041] More specifically, when using this equipment, first connect the top of the feeding hopper 25 to the external production equipment, then feed the fermented soybean paste into the feeding hopper 25. Next, turn on the motor 32 located on one side of the feeding hopper 25. After being decelerated by the output of the motor 32, the motor 32 drives the feeding rack 27 to rotate, thus causing the feeding rack 27 to transport the fermented soybean paste in an orderly manner. The fermented soybean paste is then transported to the conveying cylinder 2 located below. Then, turn on the motor 32 located on one side of the conveying cylinder 2. Here, after being decelerated by the reducer 33, the motor 32 drives the rotating shaft 28 to rotate. The rotating shaft 28 then drives the conveying rack 29 to rotate. Since the conveying rack 29 has a spiral structure design, the conveying rack 29... The conveyor will drive the material in the conveying cylinder 2 to be conveyed. At the same time, the air pump 4 installed inside the base 1 will be turned on. The air pump 4 will deliver compressed gas through the connecting pipe 7 connected to the output end to the air pipe 3, and then through the air pipe 3 to the connecting pipe 5. It will then be distributed to each output pipe through the connecting pipe 5, and finally through the output pipe 6 to deliver the compressed gas to the conveying cylinder 2 for airflow conveying, which will enhance the conveying flow of the fermented bean paste and ensure uniform conveying. At the same time, the conveying rack 29 will drive the scraper 31 to rotate through the connecting rod 30, so that the scraper 31 will scrape off the fermented bean paste adhering to the inner wall of the conveying cylinder 2, reducing the adhesion and retention of the fermented bean paste. Finally, the fermented bean paste will fall into the external collection device through the discharge bin 26 set at the bottom of the other side of the conveying cylinder 2.

[0042] In summary, during the use or operation of the overall equipment: when it is necessary to adjust the compressed gas delivery speed according to demand, firstly, rotate the rotating sleeve 17 clockwise, causing it to move along the threaded line on the outer wall of the connecting pipe 7. Then, the inner wall of the rotating sleeve 17 no longer limits the outer end of the insertion rod 18. Next, rotate the control sleeve 8, which will drive the multiple insertion rods 18 slidably arranged on the side wall to move. Then, the inner wall of the slot 19 opened on the outer side of the connecting pipe 7 presses against one end of the insertion rod 18. Due to the rounded corner treatment at the end of the insertion rod 18 and the rounded corner design at the edge of the slot 19, one end of the insertion rod 18 will slide out of the slot 19, and the other end of the insertion rod 18 will slide out of the slot 19. One end will drive the movable spring 24 to stretch, and at the same time, the control sleeve 8 will drive the prism rod 13 to rotate through the connecting frame 10. Then, the prism rod 13 will drive the outer sleeve 12 to rotate. Then, the prism sleeve 12 will drive the movable sleeve 11 to rotate through the fixed rod 14 connected to the outer wall. Since the outer wall of the movable sleeve 11 and the inner wall of the connecting pipe 7 are connected by threads, the movable sleeve 11 will drive the prism sleeve 12 to slide along the prism rod 13 through the fixed rod 14. Then, the movable sleeve 11 will push the control block 9 to slide. Then, the control block 9 will drive the control plate 21 set on the other side to slide along the control groove 20. Both the control groove 20 and the control plate 21 are designed with an inclined structure. As the control plate 21 slides, it causes the control block 9 to move inwards simultaneously. The control block 9 also causes the slider 15 to slide along the groove 16. Then, the push block 23, connected to one side of the control block 9 via the push spring 22, gradually comes into contact with it. As the control block 9 continues to move, the control block 9 and the push block 23 work together to compress the push spring 22, changing the gap in the push spring 22 and altering the cross-sectional area of ​​the corresponding position within the connecting pipe 7. This changes the volume of gas passing through, thereby adjusting the gas delivery speed. After proper adjustment, stop rotating the control sleeve 8 and allow the movable spring 24 to drive the insertion rod 18 to slide and reset. Then, one end of the insertion rod 18 will be inserted into the corresponding slot 19. Then, reverse the rotating sleeve 17 so that the rotating sleeve 17 moves and resets along the thread set on the outer wall of the connecting pipe 7. Then, the inner wall of the rotating sleeve 17 limits the outer end of the insertion rod 18 again, so that the insertion rod 18 will not move. Then, the insertion rod 18 and the slot 19 cooperate to limit the control sleeve 8, so that the control sleeve 8 will not rotate, thereby ensuring the structural stability after the flow rate is adjusted, thus ensuring the stable use of the equipment and preventing fluctuations in the adjusted flow rate.

[0043] When the equipment is needed, first connect the top of the feeding hopper 25 to the external production equipment. Then, feed the fermented soybean paste into the feeding hopper 25. Next, turn on the motor 32 located on one side of the feeding hopper 25. After being decelerated by the output end, the motor 32 drives the feeding rack 27 to rotate, thereby causing the feeding rack 27 to transport the fermented soybean paste in an orderly manner. The fermented soybean paste is then transported into the conveying cylinder 2 located below. Then, turn on the motor 32 located on one side of the conveying cylinder 2. After being decelerated by the reducer 33, the output end of the motor 32 drives the rotating shaft 28 to rotate. The rotating shaft 28 then drives the conveying rack 29 to rotate. Since the conveying rack 29 has a spiral structure design, the conveying rack 29 will then... The material in the conveying cylinder 2 is conveyed, and at the same time, the air pump 4 installed inside the base 1 is turned on. The air pump 4 delivers compressed gas to the air pipe 3 through the connecting pipe 7 connected to the output end, and then to the connecting pipe 5 through the air pipe 3. It is then distributed to each output pipe through the connecting pipe 5, and finally delivered to the conveying cylinder 2 through the output pipe 6 for airflow conveying, which enhances the conveying flow of the fermented bean paste and ensures uniform conveying. At the same time, the conveying rack 29 drives the scraper 31 to rotate through the connecting rod 30, so that the scraper 31 scrapes off the fermented bean paste adhering to the inner wall of the conveying cylinder 2, reducing the adhesion and retention of the fermented bean paste. Finally, the fermented bean paste falls into the external collection device through the discharge bin 26 set at the bottom of the other side of the conveying cylinder 2.

[0044] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pipe-type conveying device for fermented soybean paste, comprising a base (1) and a conveying cylinder (2) mounted on the base (1), characterized in that: A conveying device is provided on the base (1). The conveying device includes an air pipe (3), an air pump (4), a connecting pipe (5), and an output pipe (6). The air pipe (3) is connected to the input end of the connecting pipe (5). Multiple output pipes (6) are connected at both ends to the connecting pipe (5) and the conveying cylinder (2). One end of the air pipe (3) is connected to a control device. The control device includes a connecting pipe (7), a control sleeve (8), a control block (9), a connecting frame (10), a moving sleeve (11), a prism sleeve (12), a prism rod (13), a fixed rod (14), a slider (15), and a slide groove (16). Multiple control blocks (9) are set inside the connecting pipe (7). The prism rod (13) is connected to the connecting pipe (7). The frame (10) is connected to the control sleeve (8), the prism sleeve (12) is connected to the movable sleeve (11) through the fixed rod (14), the outer wall of the movable sleeve (11) is movably connected to the inner wall of the connecting tube (7) through threads, the slide groove (16) is opened on the movable sleeve (11), the slider (15) is connected to one side of the control block (9), and a limit mechanism is provided on the outside of the connecting tube (7). The limit mechanism includes a rotating sleeve (17), a plug rod (18) and a slot (19). The rotating sleeve (17) is movably sleeved on the outside of the connecting tube (7) through threads, multiple plug rods (18) are set on the side wall of the control sleeve (8), and multiple slots (19) are opened on the outer wall of the connecting tube (7).

2. The tubular conveying device for fermented soybean paste according to claim 1, characterized in that: The connecting pipe (7) has multiple control slots (20) inside. The control block (9) is connected to a control plate (21) on one side. The control plate (21) slides in the control slot (20), and both the control plate (21) and the control slot (20) are designed with an inclined structure.

3. The tubular conveying device for fermented soybean paste according to claim 2, characterized in that: A push spring (22) is connected to the other side of the control block (9), and a push block (23) is connected to the other end of the push spring (22).

4. The tubular conveying device for fermented soybean paste according to claim 1, characterized in that: The control sleeve (8) is provided with a movable spring (24) on the outside, and the outer end of the insertion rod (18) is connected to the outer wall of the control sleeve (8) through the movable spring (24).

5. A tubular conveying device for fermented soybean paste according to any one of claims 1-4, characterized in that: The top of the conveying cylinder (2) is connected to a feeding bin (25), and the bottom of one side of the conveying cylinder (2) is provided with a discharging bin (26). A feeding rack (27) is rotatably provided in the feeding bin (25).

6. The tubular conveying device for fermented soybean paste according to claim 5, characterized in that: The conveying cylinder (2) is provided with a rotating shaft (28) inside. A conveying frame (29) and a connecting rod (30) are fixed on the outside of the rotating shaft (28). The conveying frame (29) is designed with a spiral structure. Multiple connecting rods (30) are arranged in a spiral array on the outside of the rotating shaft (28). A scraper (31) is connected to the other end of the connecting rod (30).

7. The tubular conveying device for fermented soybean paste according to claim 6, characterized in that: The base (1) is detachably equipped with a motor (32), one of the motors (32) being detachably installed on one side of the feed hopper (25), and the other motor (32) being detachably installed on one side of the conveying cylinder (2).

8. The tubular conveying device for fermented soybean paste according to claim 7, characterized in that: The base (1) is detachably equipped with a reducer (33). The output end of the motor (32) installed on one side of the feeding cylinder (2) is connected to one end of the rotating shaft (28) through the reducer (33). The output end of the motor (32) installed on one side of the feeding bin (25) is connected to one end of the feeding rack (27) through the reducer (33).

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