A mutton processing air extraction device with automatic cleaning function

By designing an exhaust system with an automatic cleaning function, the problem of dirt and grease accumulation in the equipment was solved, achieving automatic cleaning and uniform drying, thus improving food safety and mutton quality.

CN224539327UActive Publication Date: 2026-07-24CHONGQING HEIYANG SHEEP AGRICULTURAL PRODUCTS TRADING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHONGQING HEIYANG SHEEP AGRICULTURAL PRODUCTS TRADING CO LTD
Filing Date
2025-09-03
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Traditional mutton processing ventilation equipment lacks a self-cleaning mechanism, leading to the accumulation of dirt, grease, and microorganisms inside the equipment. This affects equipment performance and mutton quality, and may result in cross-contamination and food safety risks.

Method used

An exhaust device with automatic cleaning function was designed, including a lifting mechanism, a cleaning mechanism, an exhaust mechanism, a filtering mechanism, and a heating mechanism. The inner wall is cleaned by the rotating shaft driven by the lifting cylinder cover and the cleaning mechanism. Clean hot air is provided by the exhaust and heating mechanisms, and the mutton is rotated and revolved by the rotating mechanism to air dry evenly, ensuring consistent air drying effect.

Benefits of technology

It achieves automatic cleaning of grease and dirt from the inner wall of the equipment, avoids cross-contamination, improves food safety, and ensures the uniformity and taste of the mutton drying process, thereby enhancing the quality of the mutton.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of wind extraction equipment with automatic cleaning function for mutton processing, including cylinder, cylinder top is provided with cylinder cover, cylinder outer wall is symmetrically provided with two lifting mechanisms for lifting cylinder cover, rotary connection has shaft in the middle of cylinder cover bottom, motor is fixed in cylinder cover top, and the output shaft of motor and shaft are fixed, shaft side wall is sleeved with round plate, multiple through holes are circularly opened in round plate top at equal distance, multiple hooks are circularly arranged in round plate bottom at equal distance, multiple hook top are all provided with rotating mechanism for rotating hook, shaft bottom is provided with cleaning mechanism for cleaning cylinder inner wall.The utility model is driven by lifting mechanism, and cylinder cover is moved upwards, and then drive shaft is moved upwards, cooperate cleaning mechanism can automatically clean the inside wall of cylinder, remove grease and dirt attached on the inside wall of cylinder, to avoid cross-contamination to mutton product, improve food safety.
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Description

Technical Field

[0001] This utility model relates to the field of mutton processing technology, and in particular to a ventilation device with automatic cleaning function for mutton processing. Background Technology

[0002] Lamb refers to meat from sheep, a common type of meat. Lamb is tender and flavorful, rich in protein, vitamins, and minerals, but also contains a high amount of fat. In the air-drying process of lamb, ventilation equipment is one of the key pieces of equipment to ensure product quality and processing efficiency. Air-drying is a process that removes moisture from lamb to extend its shelf life and enhance its flavor. During this process, appropriate air circulation and humidity control must be maintained to achieve the ideal drying effect. At the same time, temperature and humidity changes during air-drying can easily lead to the accumulation of moisture, grease, and other dirt inside the equipment, thus affecting the performance of the equipment and the quality of the lamb. Therefore, ventilation equipment with automatic cleaning functions is needed for lamb processing.

[0003] Traditional ventilation equipment used in mutton processing often lacks an effective self-cleaning mechanism. Over time, dirt, grease, and microorganisms easily accumulate inside the equipment. This accumulated dirt not only reduces the efficiency of the equipment but may also cause unpleasant odors generated during the drying process to be released into the air and transferred to the mutton products to be processed, resulting in cross-contamination. This situation not only affects the flavor and appearance of the mutton but also seriously threatens food safety and may pose health risks to consumers. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an exhaust system with automatic cleaning function for mutton processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A ventilation device with automatic cleaning function for mutton processing includes a cylinder with a cover at the top. Two lifting mechanisms for raising and lowering the cover are symmetrically arranged on the outer wall of the cylinder. A rotating shaft is rotatably connected to the bottom center of the cover. A motor is fixed to the top of the cover, and the output shaft of the motor is fixed to the rotating shaft. A circular plate is sleeved on the side wall of the rotating shaft. Multiple through holes are equidistantly arranged in a circle at the top of the circular plate, and multiple hooks are equidistantly arranged in a circle at the bottom of the circular plate. Each hook has a rotating mechanism at its top for rotating. A cleaning mechanism for cleaning the inner wall of the cylinder is located at the bottom of the rotating shaft. A toothed ring is fixed to the inner wall of the cylinder, located below the circular plate. A first circular box is fixed to the bottom of the cylinder, and a heating mechanism is installed inside the first circular box. A second circular box is located at the bottom of the first circular box, and multiple... The device includes multiple air intake pipes connected to a first circular box. A filter mechanism for filtering air is installed inside the second circular box. An air extraction mechanism is located at the top of the cylinder to draw air from inside. During use, the lifting mechanism moves the cylinder cover upwards, which in turn moves the rotating shaft upwards. Combined with a cleaning mechanism, this automatically cleans the inner wall of the cylinder, removing grease and dirt, thus preventing cross-contamination of the mutton and improving food safety. The design of the air extraction, filtering, and heating mechanisms allows clean hot air to be drawn into the cylinder. A drive motor, in conjunction with the rotating shaft, rotates the circular plate. Simultaneously, a rotating mechanism, in conjunction with a gear ring, rotates the hook, enabling the mutton to rotate and revolve during the drying process. This ensures even contact with hot air throughout, guaranteeing consistent drying and preventing some areas from drying too quickly or retaining moisture, thus enhancing the flavor and texture of the mutton.

[0006] As a further embodiment of this utility model, the air extraction mechanism includes an exhaust fan, which is fixed to the top of the cylinder cover and the air inlet of the exhaust fan is connected to the cylinder. The filtration mechanism includes multiple filter layers, which are fixed at equal intervals inside the second circular box. A window is provided at the bottom of the second circular box. The exhaust fan is driven to extract the air from inside the cylinder, making the inside of the cylinder a negative pressure environment. At this time, under the action of atmospheric pressure, outside air enters the inside of the second circular box through the window and is filtered by multiple filter layers to remove dust and moisture from the air.

[0007] As a further embodiment of this utility model, the heating mechanism includes a semiconductor cooling chip. A mounting hole is provided at the bottom of the first circular box. The semiconductor cooling chip is fixed to the inner wall of the mounting hole. Multiple first fins are fixed linearly at equal intervals at the hot end of the semiconductor cooling chip, and multiple second fins are fixed at equal intervals at the cold end of the semiconductor cooling chip. An annular tube is provided on the outer wall of the cylinder. Multiple branch pipes are equidistantly arranged through the outer wall of the annular tube, with one end of each branch pipe penetrating the inner wall of the cylinder. Two connecting pipes are symmetrically arranged through the outer wall of the first circular box, and both connecting pipes are connected to the annular tube. When the semiconductor cooling chip is energized, its hot end temperature rapidly rises to a set value, thereby increasing the surface temperature of the multiple first fins. Dry air enters the interior of the first circular box through multiple air inlets and contacts the surfaces of the multiple first fins, thus heating the air. The hot air enters the annular tube through the two connecting pipes, then enters the cylinder through the multiple branch pipes, and is blown onto the surface of the mutton for air-drying.

[0008] As a further embodiment of this utility model, the rotating mechanism includes a connecting rod, which is fixed to the top of one of the hooks and rotatably connected to the bottom of the circular plate. A gear is sleeved on the side wall of the connecting rod, and the gear meshes with the circular plate. The drive motor drives the rotating shaft to rotate, which in turn drives the circular plate to rotate. The rotation of the circular plate drives multiple connecting rods and multiple hooks to rotate simultaneously, causing the mutton to revolve along the inner wall of the cylinder. In conjunction with the gear ring and multiple gears, multiple connecting rods rotate, which in turn drives multiple hooks to rotate. This allows the mutton to revolve and rotate simultaneously, ensuring that the mutton and hot air are in full contact. This ensures that the air volume and temperature distribution of the mutton are consistent across all parts, preventing some parts from drying too quickly while others remain too humid. This improves the uniformity of the drying effect and enhances the taste and quality of the dried mutton.

[0009] As a further embodiment of this utility model, the lifting mechanism includes a support plate fixed to the outer wall of the cylinder near the bottom. A hydraulic push rod is fixed to the top of the support plate, and a support plate is fixed to the output end of the hydraulic push rod. The support plate and the cylinder cover are fixed together. The cleaning mechanism includes a circular seat fixed to the bottom end of the rotating shaft. A groove is provided on the top of the circular seat, and an absorbent sponge is placed inside the groove. Driving two hydraulic push rods in conjunction with two support plates moves the cylinder cover upward. As the cylinder cover moves upward, it moves the rotating shaft upward, thereby moving the circular plate and the circular seat upward. As the circular seat moves upward, it scrapes and cleans the grease and dirt on the inner wall of the cylinder. The cleaned dirt and grease are absorbed onto the absorbent sponge. This allows the inner wall of the cylinder to be cleaned once every time mutton is collected, avoiding contamination of the mutton and improving food safety.

[0010] The beneficial effects of this utility model are as follows: 1. During use, this device uses a lifting mechanism to move the cylinder cover upwards, which in turn moves the rotating shaft upwards. In conjunction with the cleaning mechanism, it can automatically clean the inner wall of the cylinder, removing grease and dirt adhering to the inner wall, thereby avoiding cross-contamination of mutton products and improving food safety.

[0011] 2. Through the design of the air extraction mechanism, filtration mechanism and heating mechanism, clean hot air can be drawn into the cylinder. The drive motor, together with the rotating shaft, drives the circular plate to rotate. At the same time, the rotating mechanism, together with the gear ring, drives the hook to rotate, so that the mutton can rotate and revolve during the air drying process. This ensures that all parts are evenly exposed to the hot air, ensuring a consistent air drying effect and preventing some parts from drying too quickly or leaving moisture residue, thereby improving the flavor and taste of the mutton. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a ventilation device with automatic cleaning function for mutton processing proposed in this utility model. Figure 2 This is a cross-sectional schematic diagram of the cylinder and cylinder cover of an exhaust device with automatic cleaning function for mutton processing proposed in this utility model. Figure 3 An exploded view of the hook, connecting rod, and gear of an exhaust device with automatic cleaning function for mutton processing proposed in this utility model; Figure 4 This is a schematic diagram of the bottom of a circular plate of an exhaust device with automatic cleaning function for mutton processing proposed in this utility model. Figure 5 An exploded view of the circular base, absorbent sponge, and groove of an exhaust device with automatic cleaning function for mutton processing proposed in this utility model; Figure 6 This is a schematic diagram of the annular pipe, the first circular box, the second circular box, and the connecting pipe of an exhaust device with automatic cleaning function for mutton processing proposed in this utility model. Figure 7 This is a first circular cross-sectional view of an exhaust device with automatic cleaning function for mutton processing proposed in this utility model. Figure 8 This is a schematic cross-sectional view of the second circular box of an exhaust device with automatic cleaning function for mutton processing proposed in this utility model.

[0013] In the diagram: 1. Cylinder; 2. Cylinder cover; 3. Exhaust fan; 4. Motor; 5. Support plate; 6. Hydraulic push rod; 7. Support plate; 8. Annular pipe; 9. Branch pipe; 10. Circular plate; 11. Through hole; 12. Gear ring; 13. Shaft; 14. Circular seat; 15. Absorbent sponge; 16. Hook; 17. Connecting rod; 18. Gear; 19. Groove; 20. First circular box; 21. Second circular box; 22. Connecting pipe; 23. Semiconductor cooling chip; 24. First fin; 25. Second fin; 26. Inlet pipe; 27. Filter layer; 28. Window. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1 - Figure 8A ventilation device with automatic cleaning function for mutton processing includes a cylinder 1, a cylinder cover 2 at the top of the cylinder 1, two lifting mechanisms symmetrically arranged on the outer wall of the cylinder 1 for raising and lowering the cylinder cover 2, a rotating shaft 13 rotatably connected to the bottom center of the cylinder cover 2, a motor 4 fixed to the top of the cylinder cover 2, and the output shaft of the motor 4 fixed to the rotating shaft 13, a circular plate 10 sleeved on the side wall of the rotating shaft 13, multiple through holes 11 evenly spaced in a circle on the top of the circular plate 10, multiple hooks 16 evenly spaced in a circle on the bottom of the circular plate 10, each hook 16 having a rotating mechanism at its top for rotating the hook 16, a cleaning mechanism for cleaning the inner wall of the cylinder 1 at the bottom of the rotating shaft 13, a toothed ring 12 fixed to the inner wall of the cylinder 1, the toothed ring 12 being located below the circular plate 10, a first circular box 20 fixed to the bottom of the cylinder 1, a heating mechanism being arranged inside the first circular box 20, a second circular box 21 at the bottom of the first circular box 20, and multiple through holes 11 evenly spaced through the top of the second circular box 21. The device has multiple air inlet pipes 26, all of which are connected to the first circular box 20. The second circular box 21 is equipped with an air filtration mechanism. The top of the cylinder 1 is equipped with an air extraction mechanism for drawing air from inside the cylinder 1. During use, the device moves the cylinder cover 2 upward through the lifting mechanism, which in turn moves the rotating shaft 13 upward. In conjunction with the cleaning mechanism, the inner wall of the cylinder 1 can be automatically cleaned to remove grease and dirt adhering to the inner wall of the cylinder 1, thereby avoiding cross-contamination of the mutton products and improving food safety. Through the design of the air extraction mechanism, filtration mechanism and heating mechanism, clean hot air can be drawn into the cylinder 1. The drive motor 4, in conjunction with the rotating shaft 13, drives the circular plate 10 to rotate. At the same time, in conjunction with the rotation mechanism and the gear ring 12, the hook 16 rotates, so that the mutton can rotate and revolve during the air drying process, so that all parts are evenly exposed to hot air, ensuring consistent air drying effect, avoiding some parts from drying too quickly or having residual moisture, and improving the flavor and taste of the mutton.

[0016] In this embodiment, the air extraction mechanism includes an exhaust fan 3, which is fixed to the top of the cylinder cover 2 and the air inlet of the exhaust fan 3 is connected to the cylinder 1. The filtration mechanism includes multiple filter layers 27, which are fixed at equal intervals inside the second circular box 21. The bottom of the second circular box 21 has a window 28. The exhaust fan 3 is driven to extract the air from inside the cylinder 1, making the inside of the cylinder 1 a negative pressure environment. At this time, under the action of atmospheric pressure, outside air enters the inside of the second circular box 21 through the window 28 and is filtered by the multiple filter layers 27 to remove dust and moisture from the air.

[0017] In this embodiment, the heating mechanism includes a semiconductor cooling chip 23. A mounting hole is provided at the bottom of the first circular box 20. The semiconductor cooling chip 23 is fixed to the inner wall of the mounting hole. Multiple first fins 24 are fixed linearly at equal intervals at the hot end of the semiconductor cooling chip 23, and multiple second fins 25 are fixed at equal intervals at the cold end of the semiconductor cooling chip 23. An annular tube 8 is provided on the outer wall of the cylinder 1. Multiple branch pipes 9 are equidistantly arranged through the outer wall of the annular tube 8, with one end of each branch pipe 9 penetrating the inner wall of the cylinder 1. The outer wall of the first circular box 20 is symmetrically connected... Two connecting pipes 22 are provided, and both connecting pipes 22 are connected to the annular pipe 8. When the semiconductor cooling chip 23 is energized, its hot end temperature rises rapidly to a set value, thereby raising the temperature of the surface of multiple first fins 24. Dry air enters the interior of the first circular box 20 through multiple air inlet pipes 26 and comes into contact with the surface of multiple first fins 24, so that the air is heated. The hot air enters the interior of the annular pipe 8 through the two connecting pipes 22, and then enters the interior of the cylinder 1 through multiple branch pipes 9, and is blown onto the surface of the mutton to air dry the mutton.

[0018] In this embodiment, the rotating mechanism includes a connecting rod 17, which is fixed to the top of one of the hooks 16 and rotatably connected to the bottom of the circular plate 10. A gear 18 is sleeved on the side wall of the connecting rod 17 and meshes with the circular plate 10. The drive motor 4 drives the rotating shaft 13 to rotate, which in turn drives the circular plate 10 to rotate. The rotation of the circular plate 10 drives multiple connecting rods 17 and multiple hooks 16 to rotate simultaneously, so that the mutton revolves along the inner side wall of the cylinder 1. In conjunction with the gear ring 12 and multiple gears 18, multiple connecting rods 17 rotate, which in turn drives multiple hooks 16 to rotate. This allows the mutton to revolve around the cylinder while rotating on its own axis, ensuring that the mutton and hot air are in full contact. This ensures that the air volume and temperature distribution of the mutton are consistent across all parts, preventing some parts from drying too quickly while other parts may still retain excessive humidity. This improves the uniformity of the drying effect and enhances the taste and quality of the dried mutton.

[0019] In this embodiment, the lifting mechanism includes a support plate 7, which is fixed to the outer wall of the cylinder 1 near the bottom. A hydraulic push rod 6 is fixed to the top of the support plate 7, and a support plate 5 is fixed to the output end of the hydraulic push rod 6. The support plate 5 is fixed to the cylinder cover 2. The cleaning mechanism includes a circular seat 14, which is fixed to the bottom of the rotating shaft 13. A groove 19 is provided on the top of the circular seat 14, and an absorbent sponge 15 is provided inside the groove 19. Driving the two hydraulic push rods 6 in conjunction with the two support plates 5 drives the cylinder cover 2 to move upward. As the cylinder cover 2 moves upward, it drives the rotating shaft 13 to move upward, which in turn drives the circular plate 10 and the circular seat 14 to move upward. As the circular seat 14 moves upward, it scrapes and cleans the grease and dirt on the inner wall of the cylinder 1. The cleaned dirt and grease are then absorbed onto the absorbent sponge 15. This allows the inner wall of the cylinder 1 to be cleaned once every time mutton is collected, avoiding contamination of the mutton and improving food safety.

[0020] Working Principle: During use, the mutton to be air-dried is hung one by one on multiple hooks 16. After completion, two hydraulic push rods 6, in conjunction with two support plates 5, drive the cylinder cover 2 to move downwards, which in turn moves the circular plate 10, rotating shaft 13, and circular seat 14 downwards. When the cylinder cover 2 contacts the top of the cylinder 1, the circular plate 10 is inside the cylinder 1. At this time, the power switches of the exhaust fan 3 and the semiconductor cooling chip 23 are turned on. When the semiconductor cooling chip 23 is energized, its hot end temperature rises rapidly to the set value, which in turn raises the temperature of the surfaces of multiple first fins 24, driving the exhaust fan 3 to expel the air inside the cylinder 1. The extraction creates a negative pressure environment inside cylinder 1. At this time, under atmospheric pressure, outside air enters the second circular box 21 through window 28. After being filtered by multiple filter layers 27 to remove dust and moisture, the dry air enters the first circular box 20 through multiple air inlet pipes 26 and contacts the surfaces of multiple first fins 24, causing the air to be heated. The hot air enters the annular pipe 8 through two connecting pipes 22, then enters the cylinder 1 through multiple branch pipes 9, and is blown onto the surface of the mutton to air-dry it. Simultaneously, the power switch of motor 4 is turned on, driving motor 4 to rotate shaft 1. 3. The rotation of the circular plate 10 causes the circular plate 10 to rotate, which in turn causes multiple connecting rods 17 and multiple hooks 16 to rotate simultaneously. This causes the mutton to revolve along the inner wall of the cylinder 1. In conjunction with the gear ring 12 and multiple gears 18, the connecting rods 17 rotate, which in turn causes the hooks 16 to rotate. This allows the mutton to rotate simultaneously with its own rotation, ensuring sufficient contact between the mutton and the hot air. This ensures that the airflow and temperature distribution are consistent across all parts of the mutton, preventing some parts from drying too quickly while others remain excessively moist. This improves the uniformity of the drying process. To improve the taste and quality of the air-dried mutton, after air-drying, the power switches of the two hydraulic push rods 6 are turned on again. This drives the two hydraulic push rods 6, along with the two support plates 5, to move the cylinder cover 2 upwards. As the cylinder cover 2 moves upwards, the rotating shaft 13 moves upwards, which in turn moves the circular plate 10 and the circular seat 14 upwards. As the circular seat 14 moves upwards, it scrapes and cleans the grease and dirt on the inner wall of the cylinder 1. The cleaned dirt and grease are then absorbed onto the absorbent sponge 15. This allows the inner wall of the cylinder 1 to be cleaned every time mutton is collected, preventing contamination of the mutton and improving food safety.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ventilation device with automatic cleaning function for mutton processing, comprising a cylinder (1), characterized in that, The cylinder (1) is provided with a cylinder cover (2) at the top. Two lifting mechanisms for lifting the cylinder cover (2) are symmetrically arranged on the outer side wall of the cylinder (1). A rotating shaft (13) is rotatably connected to the middle of the bottom of the cylinder cover (2). A motor (4) is fixed to the top of the cylinder cover (2), and the output shaft of the motor (4) is fixed to the rotating shaft (13). A circular plate (10) is sleeved on the side wall of the rotating shaft (13). Multiple through holes (11) are opened in a circular pattern at equal intervals on the top of the circular plate (10). Multiple hooks (16) are arranged in a circular pattern at equal intervals on the bottom of the circular plate (10). A rotating mechanism for rotating the hooks (16) is provided at the top of each hook (16). The bottom of the rotating shaft (13) is provided with a rotating mechanism for rotating the hooks (16). There is a cleaning mechanism for cleaning the inner wall of the cylinder (1). A toothed ring (12) is fixed on the inner side wall of the cylinder (1) and the toothed ring (12) is located below the circular plate (10). A first circular box (20) is fixed at the bottom of the cylinder (1). A heating mechanism is provided inside the first circular box (20). A second circular box (21) is provided at the bottom of the first circular box (20). Multiple air inlet pipes (26) are provided at equal intervals through the top of the second circular box (21), and the multiple air inlet pipes (26) are all connected to the first circular box (20). A filter mechanism for filtering air is provided inside the second circular box (21). A suction mechanism for extracting air from the inside of the cylinder (1) is provided at the top of the cylinder (1).

2. The ventilation equipment with automatic cleaning function for mutton processing according to claim 1, characterized in that, The air extraction mechanism includes a blower (3), which is fixed to the top of the cylinder cover (2), and the air inlet of the blower (3) is connected to the cylinder (1).

3. The ventilation equipment with automatic cleaning function for mutton processing according to claim 1, characterized in that, The filtration mechanism includes multiple filter layers (27), which are fixed at equal intervals inside the second circular box (21). The bottom of the second circular box (21) has a window (28).

4. The ventilation equipment with automatic cleaning function for mutton processing according to claim 1, characterized in that, The heating mechanism includes a semiconductor cooling chip (23). The bottom of the first circular box (20) is provided with an installation hole. The semiconductor cooling chip (23) is fixed on the inner wall of the installation hole. The hot end of the semiconductor cooling chip (23) is fixed with multiple first fins (24) at equal distances in a linear shape. The cold end of the semiconductor cooling chip (23) is fixed with multiple second fins (25) at equal distances. The outer wall of the cylinder (1) is provided with an annular tube (8). Multiple branch pipes (9) are provided through the outer wall of the annular tube (8) at equal distances. One end of each branch pipe (9) is through the inner wall of the cylinder (1). Two connecting pipes (22) are symmetrically provided through the outer wall of the first circular box (20). Both connecting pipes (22) are connected to the annular tube (8).

5. The ventilation equipment with automatic cleaning function for mutton processing according to claim 1, characterized in that, The rotating mechanism includes a connecting rod (17), which is fixed to the top of one of the hooks (16) and is rotatably connected to the bottom of the circular plate (10). A gear (18) is sleeved on the side wall of the connecting rod (17) and meshes with the circular plate (10).

6. The ventilation device with automatic cleaning function for mutton processing according to claim 1, characterized in that, The lifting mechanism includes a support plate (7), which is fixed to the outer wall of the cylinder (1) near the bottom. A hydraulic push rod (6) is fixed to the top of the support plate (7), and a support plate (5) is fixed to the output end of the hydraulic push rod (6). The support plate (5) and the cylinder cover (2) are fixed together.

7. The ventilation device with automatic cleaning function for mutton processing according to claim 1, characterized in that, The cleaning mechanism includes a circular seat (14), which is fixed to the bottom of the rotating shaft (13). A groove (19) is provided on the top of the circular seat (14), and an absorbent sponge (15) is provided inside the groove (19).