Circulating ventilation device of fermented meat air-drying chamber

Abstract

The invention belongs to the technical field of fermented meat air-drying, and discloses a fermented meat air-drying chamber circulating ventilation device which comprises an air-drying circulating ventilation box, ventilation pipes are fixedly connected to the two sides of the end, close to the top, of the air-drying circulating ventilation box in a penetrating mode, and air volume control parts are arranged in the inner walls of the two ventilation pipes; the sealing plug rod which moves up passively can drive the part provided with a plurality of liquid inlet holes to move up, water contained in the liquid hopper is absorbed and fed, then is discharged through the liquid outlet pipe and flows down into the sponge mat to soak the sponge mat, and when the sponge mat rotates passively, the surface of the filter screen plate can be cleaned and prevented from generating dust on the surface of the filter screen plate, so that the service life of the filter screen plate is prolonged. And when one side, far away from the guide rod, of the oblique angle shielding plate passively deviates, the ring opening is gradually expanded, so that the inlet and outlet degree of the air volume is controlled, the random size of the ring opening is regulated and controlled through manual judgment, and the situation that the air outlet and inlet volume cannot be accurately controlled, and consequently, meat products are air-dried unevenly is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of air-drying fermented meat, in particular to a circulating ventilation device for an air-drying chamber of fermented meat. Background Art

[0002] Fermented meat is a food that is fermented by microorganisms (such as lactic acid bacteria and yeast). The peptides and various amino acids produced during the fermentation process are easier to digest and absorb by the human body, which is beneficial to intestinal health. The purpose of air-drying fermented meat is to reduce moisture and make the meat products extremely dry. In such an environment, putrefactive microorganisms cannot survive and reproduce, so it can be preserved for a longer time.

[0003] In the air-drying circulating ventilation box in the prior art, if the ventilation system or environment is not properly controlled, microorganisms in the air (such as bacteria, mold, etc.) may enter the meat products, thereby increasing the risk of microbial contamination. These microorganisms may cause the meat products to spoil and deteriorate, reducing the quality and safety of the products. In addition, the existing circulating ventilation box cannot guarantee precise control of the air outlet and air inlet volume, which may cause uneven air drying of the meat products. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a circulating ventilation device for a fermented meat drying room.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a circulating ventilation device for a fermented meat drying room, comprising an air-drying circulating ventilation box, both sides of the air-drying circulating ventilation box near the top are connected with ventilation pipes through and fixedly connected, the inner walls of the two ventilation pipes are provided with air volume control parts, the two air volume control parts respectively include a slot plate fixedly connected to the inner wall of the ventilation pipe, a forward and reverse rotating motor is fixedly connected to the outer wall of one end of the slot plate, a rotating rod is fixedly connected to the rotating shaft of the motor, a rod body on one side of the rotating rod is connected with the plate body of the slot plate through and through for rotation, and a purification structure is also provided on the rod body of the rotating rod for sterilizing the inlet and outlet gases; The air volume control unit specifically includes a large rotating ring that is rotatably connected to the inner wall of the air volume control unit, a small rotating ring is provided at the center of the large rotating ring, and a plurality of arc angle plate grooves are jointly and fixedly connected between the small rotating ring and the large rotating ring, each of the arc angle plate grooves is slidably connected to a guide rod in the inner wall, and each of the guide rods is movably sleeved with an angled shield plate, and each of the angled shield plates is slidably connected to each other, and each of the arc angle plate grooves can indirectly drive each of the angled shield plates to rotate and slide relative to each other, thereby increasing or decreasing the air volume passing through the ventilation duct.

[0006] Preferably, the purification structure comprises a filter screen plate rotatably connected to the rod body of the rotating rod, the filter screen plate is fixedly connected to the inner wall of the ventilation pipe, and two triangular sleeve plates are also fixedly connected to the rod body of the rotating rod.

[0007] Preferably, a sponge pad is fixedly connected to the outer wall of one end of the triangle of the two triangular sleeves, and the other ends of the three sponge pads are respectively connected to the outer walls of both ends of the filter screen plate in a fitting and rotatable manner.

[0008] Preferably, a sealing plug rod is intermittently slidably connected to the outer wall of the triangular top end of one of the triangular sleeves, and a liquid bucket is slidably connected to the sealing plug rod near the top, and the outer wall of one end of the liquid bucket and the outer wall of one end of the air-drying circulating ventilation box are fixedly connected accordingly.

[0009] Preferably, a plurality of liquid inlet holes are circumferentially opened on the outer wall of the sealing plug rod near the top, a liquid outlet pipe is fixedly connected to the outer wall of one end of the sealing plug rod near the bottom, and the rod body of the sealing plug rod is also slidably connected to the outer wall of the top side of the ventilation pipe.

[0010] Preferably, ear plates are fixedly connected to the outer walls at both ends of the liquid hopper close to the bottom and to the rod body of the sealing plug rod, and two springs are jointly and fixedly connected between the two ear plates.

[0011] Preferably, the air volume control unit also includes a sleeve disk fixedly connected to the rotating rod body, a rubber gasket is fixedly connected to the outer wall of one end of the sleeve disk, and the outer wall of the other end of the rubber gasket is fit-connected to the outer wall of one end of the small rotating ring.

[0012] Preferably, a T-slot plate is fixedly connected to the inner wall of the ventilation pipe, a hexagonal transverse groove is opened in the inner wall of one end of the T-slot plate, and the inner wall of the hexagonal transverse groove and a section of the rod body of each guide rod are correspondingly fitted and slidably connected.

[0013] Preferably, the outer walls at both ends of each of the angled shields are respectively slidably connected to the small swivel ring and the outer wall of the T-slot disk.

[0014] Preferably, an inner wall at one end of the large rotating ring and an outer wall at one end of the T-slot disk are fitted and rotatably connected.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention starts the motor in the air volume control part to drive the rotating rod to rotate. The rotating rotating rod will synchronously drive the two triangular sleeves and multiple groups of sponge pads to rotate, so that the triangular sleeves in the rotating state will intermittently press against the sealing plug rod above, and then the passively upward moving sealing plug rod can drive the part with multiple liquid inlet holes to move upward, penetrate into the inner wall of the liquid bucket, absorb the water contained in the liquid bucket for feeding, and then discharge the water through the liquid outlet pipe, and then flow down into the corresponding sponge pad to soak it, so that when the sponge pad is passively rotated on the filter screen plate, the surface of the filter screen plate can be cleaned to prevent the dust contained in the gas from covering the surface of the filter screen plate during the gas in and out process, thereby reducing the purification effect of the activated carbon in the filter screen plate on the gas.

[0016] The present invention drives the sleeve disk and the rubber gasket to rotate during the rotation of the rotating rod, and drives the small rotating ring, multiple arc angle plate grooves and a large rotating ring in contact with them to rotate synchronously through friction. The inner wall of the hexagonal horizontal groove is provided with a limited guiding sliding, so that the multiple angled shields will be passively offset from each other when the corresponding guide rod moves, thereby gradually expanding the circle opening, thereby controlling the degree of air inlet and outlet, avoiding the inability to ensure accurate control of the air outlet and air inlet, which leads to uneven air drying of meat products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 , 2 All of them are schematic diagrams of the overall structure of the present invention; Figure 3 It is a schematic diagram of the overall partial cross-sectional structure of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the partially enlarged structure at center A; Figure 5 This is a schematic diagram of the partial split structure of the air volume control unit of the present invention (part 1); Figure 6 This is a schematic diagram of the partial split structure of the air volume control unit of the present invention (part 2); Figure 7 It is a schematic diagram of the partial planar structure of the air volume control unit of the present invention; Figure 8 It is a schematic diagram of the overall cross-sectional structure of the sealing plug rod of the present invention.

[0018] In the figure: 1. Air-drying circulation ventilation box; 11. Ventilation pipe; 2. Air volume control unit; 21. Slot plate; 22. Motor; 23. Rotating rod; 24. Filter screen plate; 25. Triangular sleeve plate; 26. Sponge pad; 27. Sleeve plate; 28. Rubber gasket; 29. ​​Large swivel; 230. Small swivel; 231. Arc angle plate groove; 232. T-shaped slot plate; 233. Hexagonal horizontal groove; 234. Guide rod; 235. Angled shield plate; 236. Liquid bucket; 237. Sealing plug rod; 238. Liquid inlet hole; 239. Liquid outlet pipe; 240. Ear plate; 241. Spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figures 1 to 8 As shown, the present invention provides a circulation ventilation device for a fermented meat drying room, comprising an air-drying circulation ventilation box 1, both sides of one end of the air-drying circulation ventilation box 1 near the top are connected with ventilation pipes 11 through and fixedly connected, the inner walls of the two ventilation pipes 11 are provided with air volume control parts 2, the two air volume control parts 2 respectively include a slot plate 21 fixedly connected to the inner wall of the ventilation pipe 11, a motor 22 of a forward and reverse rotation type is fixedly connected to the outer wall of one end of the slot plate 21, a rotating rod 23 is fixedly connected to the rotating shaft of the motor 22, a rod body on one side of the rotating rod 23 is connected with the plate body of the slot plate 21 through and through rotation, and a purification structure is also provided on the rod body of the rotating rod 23 for sterilizing the inflowing and outflowing gas; A plurality of liquid inlet holes 238 are formed on the outer wall of the sealing plug rod 237 near the top, and a liquid outlet pipe 239 is fixedly connected to the outer wall of one end of the sealing plug rod 237 near the bottom. The rod body of the sealing plug rod 237 is also specifically connected to the outer wall of the top side of the ventilation pipe 11 through sliding. Ear plates 240 are fixedly connected to the outer walls of both ends of the liquid hopper 236 near the bottom and the rod body of the sealing plug rod 237, and two springs 241 are fixedly connected between the two ear plates 240. The air volume control unit 2 specifically also includes a large rotating ring 29 that is rotatably connected to the inner wall of the air volume control unit 2. A small rotating ring 230 is provided at the center of the large rotating ring 29, and a plurality of arc angle plate grooves 231 are jointly and fixedly connected between the small rotating ring 230 and the large rotating ring 29. A guide rod 234 is slidably connected to the inner wall of each arc angle plate groove 231, and an angled shield plate 235 is movably sleeved on the rod body of each guide rod 234. Each angled shield plate 235 is slidably connected to each other, and each arc angle plate groove 231 can indirectly drive each angled shield plate 235 to rotate and slide relative to each other, thereby increasing or decreasing the air volume passing through the ventilation duct 11.

[0021] The above scheme is adopted: by starting the motor 22 on the slot plate 21 to drive the rotating rod 23 to rotate, thereby driving the two triangular sleeves 25 and multiple groups of sponge pads 26 to rotate, the triangular sleeve 25 in the rotating state will intermittently press against the sealing plug rod 237 above, drive the part with multiple liquid inlet holes 238 to move upward, and probe into the inner wall of the liquid bucket 236 to absorb the water contained in the liquid bucket 236 for feeding, and the passively moved sealing plug rod 237 will also drive the ear plate 240 fixed on the rod body to move upward to squeeze the two springs 241. The installation of the spring 241 facilitates the subsequent driving of the unpressurized sealing plug rod 237 to reset, so that the liquid in the sealing plug rod 237 will naturally pass through the liquid outlet pipe 239 for discharge, and then flow downstream The sponge pad 26 is inserted into the corresponding sponge pad 26 to soak it, so that when the sponge pad 26 is passively rotated on the filter screen plate 24, the surface of the filter screen plate 24 can be cleaned. During the rotation of the rotating rod 23, the sleeve disc 27 and the rubber gasket 28 will be synchronously driven to rotate. The passively rotating rubber gasket 28 will drive the small rotating ring 230, multiple arc angle plate grooves 231 and a large rotating ring 29 to rotate synchronously through friction, thereby driving the guide rod 234 to perform limited sliding. The guide rod 234 that is limited to sliding will also perform limited guiding sliding on the inner wall of the hexagonal horizontal groove 233. Therefore, the multiple angled shields 235 will be passively offset from each other when the corresponding guide rod 234 moves, thereby controlling the degree of air flow in and out.

[0022] The purification structure includes a filter screen plate 24 rotatably connected to the rod body of the rotating rod 23, the filter screen plate 24 is fixedly connected to the inner wall of the ventilation pipe 11, and two triangular sleeves 25 are fixedly connected to the rod body of the rotating rod 23. Sponge pads 26 are fixedly connected to the outer walls of the triangles at one end of the two triangular sleeves 25, and the other ends of the three sponge pads 26 are respectively fitted and rotatably connected to the outer walls of the two ends of the filter screen plate 24. A sealing plug rod 237 is intermittently slidably fitted on the outer wall of the triangular top end of a triangular sleeve 25, and a liquid bucket 236 is fitted and slidably connected near the top of the sealing plug rod 237. The outer wall of one end of the liquid bucket 236 is fixedly connected to the outer wall of one end of the air-drying circulation ventilation box 1.

[0023] The above scheme is adopted: start the motor 22 on the slot plate 21 to drive the rotating rod 23 to rotate, and the rotating rotating rod 23 will synchronously drive the two triangular sleeves 25 and multiple groups of sponge pads 26 to rotate, so that the triangular sleeves 25 in the rotating state will intermittently press against the sealing plug rod 237 above, so that the sealing plug rod 237 moves upward on the ventilation pipe 11, and then the passively moved upward sealing plug rod 237 can drive the part with multiple liquid inlet holes 238 to move upward, and penetrate into the inner wall of the liquid bucket 236, and absorb the water contained in the liquid bucket 236 for feeding.

[0024] A plurality of liquid inlet holes 238 are circumferentially formed on the outer wall of the sealing plug rod 237 near the top, a liquid outlet pipe 239 is fixedly connected to the outer wall of one end of the sealing plug rod 237 near the bottom, and the rod body of the sealing plug rod 237 is also slidably connected to the outer wall of the top side of the ventilation pipe 11, ear plates 240 are fixedly connected to the outer walls of both ends of the liquid bucket 236 near the bottom and the rod body of the sealing plug rod 237, and two springs 241 are jointly and fixedly connected between the two ear plates 240.

[0025] The above scheme is adopted: the passively moved sealing plug rod 237 will drive the ear plate 240 fixed on the rod body to move upward, thereby squeezing the two springs 241 to cause them to deform. The installation of the spring 241 facilitates the subsequent driving of the unpressurized sealing plug rod 237 to reset. The liquid that is passively and intermittently and repeatedly discharged into the sealing plug rod 237 will naturally be discharged through the liquid outlet pipe 239, and then flow down into the corresponding sponge pad 26 to soak it. Therefore, when the sponge pad 26 is passively rotated on the filter screen plate 24, the surface of the filter screen plate 24 can be cleaned to prevent the dust contained in the gas from covering the surface of the filter screen plate 24 during the gas in and out process, thereby reducing the purification effect of the activated carbon in the filter screen plate 24 on the gas.

[0026] The air volume control unit 2 also includes a sleeve 27 fixedly connected to the rod body of the rotating rod 23, and a rubber gasket 28 is fixedly connected to the outer wall of one end of the sleeve 27, and the outer wall of the other end of the rubber gasket 28 is fit-connected to the outer wall of one end of the small rotating ring 230. A T-slot disc 232 is also fixedly connected to the inner wall of the ventilation pipe 11, and a hexagonal transverse groove 233 is opened in the inner wall of one end of the T-slot disc 232. The inner wall of the hexagonal transverse groove 233 and a section of the rod body of each guide rod 234 are fit-fitted and slidably connected, and the outer walls of both ends of each bevel shield 235 are respectively fit-fitted and slidably connected to the small rotating ring 230 and the outer wall of the T-slot disc 232, and the inner wall of one end of the large rotating ring 29 is fit-fitted and rotatably connected to the outer wall of one end of the T-slot disc 232.

[0027] The above scheme is adopted: during the rotation of the rotating rod 23, the sleeve disc 27 and the rubber gasket 28 will also be synchronously driven to rotate. The passively rotating rubber gasket 28 will drive the small rotating ring 230, multiple arc angle plate grooves 231 and a large rotating ring 29 in contact with it to rotate synchronously through friction, and then each passively rotating arc angle plate groove 231 can drive the guide rod 234 fitted in its inner wall to perform limited sliding. The guide rod 234 that is limited to sliding will also perform limited guiding sliding in the inner wall of the hexagonal horizontal groove 233 opened in the T-slot disk 232. Therefore, the angled shield plates 235 connected by multiple guide rods 234 will passively offset each other when the corresponding guide rods 234 move, and the offset process is still mutually fitted and limited, but the side of the angled shield plate 235 away from the guide rod 234 will gradually expand the circle during the passive offset, thereby controlling the degree of air volume in and out, so that the arbitrary size of the circle can be adjusted through manual judgment.

[0028] The working principle and use process of the present invention are as follows: by starting the motor 22 on the slot plate 21 to drive the rotating rod 23 to rotate, the rotating rotating rod 23 will synchronously drive the two triangular sleeves 25 and multiple groups of sponge pads 26 to rotate, so that the triangular sleeves 25 in the rotating state will intermittently press against the sealing plug rod 237 above, so that the sealing plug rod 237 moves upward on the ventilation pipe 11, and then the passively moved upward sealing plug rod 237 can drive the part with multiple liquid inlet holes 238 to move upward, and penetrate into the inner wall of the liquid bucket 236 to absorb the water contained in the liquid bucket 236 for feeding, and the passively moved sealing plug rod 237 will also drive the fixed The ear plate 240 installed at a fixed position moves upward, thereby squeezing the two springs 241 to deform them. The installation of the spring 241 facilitates the subsequent reset of the unpressurized sealing plug rod 237. The liquid that is passively intermittently and repeatedly discharged into the sealing plug rod 237 will naturally be discharged through the liquid outlet pipe 239, and then flow down into the corresponding sponge pad 26 to soak it. Therefore, when the sponge pad 26 is passively rotated on the filter screen plate 24, the surface of the filter screen plate 24 can be cleaned to prevent the dust contained in the process of gas in and out from causing dust on the surface of the filter screen plate 24, thereby reducing the purification effect of the activated carbon in the filter screen plate 24 on the gas. At the same time, during the rotation of the rotating rod 23, the sleeve disc 27 and the rubber gasket 28 are also driven to rotate synchronously. The passively rotating rubber gasket 28 will drive the small rotating ring 230 in contact with it to rotate through friction, thereby driving multiple arc angle plate grooves 231 and a large rotating ring 29 installed therewith to rotate synchronously, and then each passively rotating arc angle plate groove 231 can drive the guide rod 234 fitted in its inner wall to slide in a limited position, and the guide rod 234 that is limited to slide will also be in the T-slot plate 232. The hexagonal horizontal groove 233 is designed to slide in a limited guiding manner in the inner wall, so that the angled shields 235 connected by multiple guide rods 234 will passively offset from each other when the corresponding guide rods 234 move, and the offset process still fits together and limits each other, but the side of the angled shield 235 away from the guide rod 234 will gradually expand the circle during the passive offset, thereby controlling the degree of air inflow and outflow, so that the arbitrary size of the circle can be adjusted through manual judgment, avoiding the inability to ensure accurate control of the air outflow and inflow, which leads to uneven drying of meat products.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circulating ventilation device for a fermented meat air-drying room, comprising an air-drying circulating ventilation box (1), characterized in that: The air-drying circulation ventilation box (1) has ventilation pipes (11) fixedly connected to both sides of one end near the top, and air volume control parts (2) are provided in the inner walls of the two ventilation pipes (11), and the two air volume control parts (2) respectively include a slot plate (21) fixedly connected to the inner wall of the ventilation pipe (11), and a forward and reverse rotating motor (22) is fixedly connected to the outer wall of one end of the slot plate (21), and a rotating rod (23) is fixedly connected to the rotating shaft of the motor (22), and a rod body on one side of the rotating rod (23) is connected to the plate body of the slot plate (21) for through-rotation, and a purification structure is also provided on the rod body of the rotating rod (23) for sterilizing the incoming and outgoing gases; The air volume control part (2) specifically includes a large rotating ring (29) which is rotatably connected to the inner wall of the air volume control part (2), a small rotating ring (230) is provided at the center of the large rotating ring (29), and a plurality of arc angle plate grooves (231) are fixedly connected between the small rotating ring (230) and the large rotating ring (29), a guide rod (234) is slidably connected to the inner wall of each arc angle plate groove (231), and an angled shield plate (235) is movably sleeved on the rod body of each guide rod (234), and each of the angled shield plates (235) is slidably connected to each other, and each of the angled shield plates (235) can be indirectly driven to rotate and slide relative to each other through each arc angle plate groove (231), thereby increasing or decreasing the air volume passing through the ventilation pipe (11).

2. The circulating ventilation device for fermented meat drying room according to claim 1, characterized in that: The purification structure comprises a filter screen plate (24) rotatably connected to the rod body of the rotating rod (23); the filter screen plate (24) is fixedly connected to the inner wall of the ventilation pipe (11); and two triangular sleeve plates (25) are also fixedly connected to the rod body of the rotating rod (23).

3. The circulating ventilation device for fermented meat drying room according to claim 2, characterized in that: A sponge pad (26) is fixedly connected to the outer wall of one end of the triangle of the two triangular sleeve plates (25), and the other ends of the three sponge pads (26) are respectively connected to the outer walls of both ends of the filter screen plate (24) in a fitting and rotatable manner.

4. The circulating ventilation device for fermented meat drying room according to claim 3, characterized in that: A sealing plug rod (237) is intermittently slidably fitted and connected to the outer wall of the triangular top end of the triangular sleeve plate (25); a liquid bucket (236) is slidably fitted and connected to the sealing plug rod (237) at a position close to the top; and the outer wall of one end of the liquid bucket (236) is fixedly connected to the outer wall of one end of the air-drying circulation ventilation box (1) accordingly.

5. The circulating ventilation device for fermented meat drying room according to claim 4, characterized in that: The outer wall of the sealing plug rod (237) near the top is provided with a plurality of liquid inlet holes (238) in a circumferential manner, and the outer wall of one end of the sealing plug rod (237) near the bottom is fixedly connected with a liquid outlet pipe (239). The rod body of the sealing plug rod (237) is also connected to the outer wall of the top side of the ventilation pipe (11) in a slidable manner.

6. The circulating ventilation device for a fermented meat drying room according to claim 5, characterized in that: Ear plates (240) are fixedly connected to both end outer walls of the liquid hopper (236) near the bottom and to the rod body of the sealing plug rod (237), and two springs (241) are jointly and fixedly connected between the two ear plates (240).

7. The circulating ventilation device for a fermented meat drying room according to claim 6, characterized in that: The air volume control unit (2) further comprises a sleeve disc (27) fixedly connected to the rod body of the rotating rod (23); a rubber gasket (28) is fixedly connected to the outer wall of one end of the sleeve disc (27); and the outer wall of the other end of the rubber gasket (28) is fitted and connected to the outer wall of one end of the small rotating ring (230).

8. The circulating ventilation device for a fermented meat drying room according to claim 7, characterized in that: A T-shaped slot plate (232) is also fixedly connected to the inner wall of the ventilation pipe (11), a hexagonal transverse slot (233) is provided in the inner wall at one end of the T-shaped slot plate (232), and the inner wall of the hexagonal transverse slot (233) and a section of the rod body of each guide rod (234) are correspondingly fitted and slidably connected.

9. The circulating ventilation device for a fermented meat drying room according to claim 8, characterized in that: The outer walls at both ends of each of the angled shield plates (235) are respectively fitted and slidably connected to the outer walls of the small rotating ring (230) and the T-shaped slot plate (232).

10. The circulating ventilation device for a fermented meat drying room according to claim 9, characterized in that: The inner wall at one end of the large rotating ring (29) and the outer wall at one end of the T-shaped slot disk (232) are fitted and rotatably connected.

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