A drying machine for processing beefsteaks

Abstract

The application provides a drying machine for beef processing and relates to the technical field of drying. The drying machine comprises a drying frame, a motor is arranged at the inner bottom of the drying frame, a driving wheel is arranged on the output end of the motor, a group of upper inner blocks and two groups of lower inner blocks are arranged in the drying frame, and the upper inner blocks and the lower inner blocks are arranged in an upper and lower staggered mode. The drying machine further comprises a drying mechanism, the drying mechanism comprises rotating pipes, the rotating pipes are arranged in multiple groups in a staggered mode, a plurality of groups of air outlet holes are arranged on the surface of each group of the rotating pipes, a follower wheel is connected to one end of each rotating pipe, and each group of the follower wheels is connected with the driving wheel through a transmission belt. The application designs a demand-based air supply system based on mechanical contact response, and solves the extensive working mode of the traditional drying equipment which continuously supplies air in the whole region.

Description

Technical Field

[0001] This invention relates to the field of drying technology, and more specifically, to a dryer for processing steaks. Background Technology

[0002] In the steak processing and production process, the cleaning process is a necessary step to ensure product hygiene, safety, and edibility. After slaughtering and cutting, the surface of raw steak often has blood, meat scraps, bone fragments, and other contaminants generated during processing attached to it. Thorough rinsing with water is essential to remove these harmful substances and meet food safety standards. However, while removing surface contaminants, the cleaning process inevitably results in a significant amount of water adhering to the steak surface. Due to the uneven muscle fiber texture and the tiny grooves and crevices formed at the junction of fat and muscle tissue on the steak surface, cleaning water can seep into these microstructures, forming residual water films and stagnant spots that are difficult to remove naturally. In particular, the hydrophobic fat layer on the steak surface hinders the even distribution of water, leading to excessive water accumulation in localized areas. Even after a brief draining process, the surface of the cleaned steak will still retain a high moisture content after being removed from the washing tank. This large amount of residual moisture not only dilutes the natural juices on the surface of the steak, reducing the flavor concentration, but more importantly, the excessive surface moisture creates an ideal humid environment for the rapid reproduction of microorganisms. Under normal temperature conditions, the total number of bacteria can increase exponentially within a few hours, seriously threatening the hygiene and safety of the product and its shelf life. In addition, the residual moisture will also affect subsequent processing steps such as marinating and seasoning. The presence of moisture will hinder the full contact and penetration of seasonings with the surface of the meat, resulting in uneven marinating and affecting the taste and quality of the final product. Therefore, the cleaned steak must undergo effective drying treatment to quickly remove the residual moisture on the surface to a safe range before it can enter the next processing step or be packaged and stored.

[0003] Most steak drying devices currently on the market employ forced convection fan drying technology. A typical structure of this type of equipment involves installing several axial or centrifugal fans inside the drying chamber. The high-speed rotation of these fans generates a strong airflow that sweeps across the steak surface to remove surface moisture, achieving the drying purpose. However, this drying method, relying solely on wind power, exhibits significant limitations in practical applications. First, the airflow generated by the fan creates a complex turbulent field around the steak, resulting in uneven airflow distribution and significant differences in wind force experienced by different parts of the steak. The windward side may experience excessively strong winds, while the leeward and side areas have significantly insufficient airflow speeds. This uneven airflow distribution leads to substantial differences in the drying rate across different parts of the steak surface. Moisture on the windward side may be dried while other areas retain residual moisture, resulting in inconsistent dryness and moisture levels on the dried steak surface, affecting product quality stability. Second, while the ambient or slightly warm airflow from the fan can remove free moisture from the steak surface, it is less effective at removing moisture that has penetrated into the muscle fiber grooves and fat layers. The existing fan-type drying equipment lacks effective removal capabilities for moisture bound in the crevices and shallow layers of the meat. This deep-seated residual moisture cannot be completely evaporated by surface airflow alone, resulting in a seemingly dry steak that actually retains a high moisture content. During subsequent packaging and storage, this internal moisture gradually migrates to the surface, reforming a surface water film and causing microbial growth and quality deterioration. Furthermore, fan-type drying equipment typically requires high-powered fans to generate strong airflow to achieve faster drying speeds. However, excessively strong airflow can also adversely affect the texture of the steak while removing moisture. The impact of high-speed airflow can cause the tender fibers on the surface of the steak to be blown apart, damaging the integrity of the surface tissue. This mechanical damage is particularly prominent for softer steaks or those that have undergone tenderization. In addition, the continuous operation of high-powered fans generates high energy consumption and noise pollution, increasing production costs and environmental burden for enterprises. In summary, existing fan-type drying equipment has multiple technical defects, including uneven drying, incomplete removal of deep moisture, potential damage to meat quality, and high energy consumption. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention provides a dryer for steak processing to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A steak drying machine includes a drying rack with a motor installed at the bottom of the rack. A drive wheel is fitted onto the output end of the motor. The drying rack contains one set of upper inserts and two sets of lower inserts, which are staggered vertically. The machine also includes a drying mechanism comprising rotating tubes arranged in multiple staggered sets. Each set of rotating tubes has multiple air vents on its surface. One end of each rotating tube is connected to a follower wheel, and each set of follower wheels is connected to the drive wheel via a transmission belt.

[0007] Preferably, an intermediate roller is rotatably connected to the center of the drying rack, one end of the intermediate roller is connected to an intermediate wheel, the intermediate wheel rotates in cooperation with the transmission belt, and the intermediate roller is located between two sets of lower inner blocks and below the upper inner blocks.

[0008] Preferably, the other side wall of the drying rack is provided with an air supply pipe, one end of which is connected to the air inlet pipe, and the air supply pipe is connected to multiple sets of rotating pipes, with each set of rotating pipes being rotatably connected to the air supply pipe.

[0009] Preferably, each set of rotating tubes is fitted with multiple sets of rotating wheels, and every two sets of rotating tubes form a drying assembly, which is connected to the corresponding rotating wheels by a belt. Two sets of drying assemblies are respectively provided on both sides of the upper inner block, and a set of drying assemblies is provided on the left side of the lower inner block on the left and the right side of the lower inner block on the right.

[0010] Preferably, each set of rotating tubes is fitted with an inner wheel on its surface, the inner wheel is fitted on the rotating tube, a sealing wheel is fitted on the outer side of the inner wheel, the outer wall of the sealing wheel has multiple sets of openings, and the sealing wheel has multiple sets of spacer columns inside.

[0011] Preferably, an air outlet wheel is coaxially sleeved on the outer side of the sealing wheel, the inner sidewall of the air outlet wheel is slidably connected to the outer sidewall of the sealing wheel, and annular springs are provided on both sides of the air outlet wheel. The other end of the annular springs is fixedly connected to the outer sidewall of the inner wheel, and a sealing cavity is formed between the outer side of the sealing wheel and the inner side of the air outlet wheel.

[0012] Preferably, the outer wall of the air outlet wheel is provided with an annular groove, and multiple sets of air blowing holes are provided in the annular groove.

[0013] Preferably, each set of air holes is provided with an intermediate tube, and the outer wall of the intermediate tube is provided with two sets of first slots, and multiple sets of first short rods are provided in the first slots.

[0014] Preferably, a control tube is slidably connected inside the intermediate tube, and two sets of second slots are provided on the outer wall of the control tube. Multiple sets of second short rods are provided in the second slots. The first slot is adapted to the control tube, and the second slot is adapted to the intermediate tube. One end of the control tube is provided with a compression spring, and the other end of the compression spring is fixedly connected to the outer wall of the sealing wheel.

[0015] Preferably, the rotating wheels and air outlet wheels on each set of rotating tubes are staggered. The rotating wheels and air outlet wheels on the two sets of rotating tubes connected by belts in each set are staggered in the same position, but the belts on the two sets of rotating tubes connected by belts on the other side correspond to the positions of their air outlet wheels.

[0016] Compared with existing technologies, this invention provides a dryer for steak processing, which has the following advantages: This invention designs an on-demand air supply system based on mechanical contact response, solving the problem of the extensive working mode of continuous all-area air supply in traditional drying equipment. The system has a sliding sealed cavity structure between the air outlet wheel and the sealing wheel, combined with a double-slotted linkage mechanism designed between the intermediate pipe and the control pipe, which realizes the differential air supply function that only releases airflow for drying in the local area where the steak actually contacts the air outlet wheel, while other areas that do not contact the steak always keep the air path closed and do not produce gas output. The specific working principle is that when the surface of the steak is pressed against the outer wall of the air outlet wheel, the air outlet wheel applies airflow to the steak. Under the applied positive pressure, the elastic support force of the ring spring is overcome, and the relative sealing wheel undergoes a radial inward sliding displacement. This tiny relative displacement is mechanically transmitted to drive the control tube inside the intermediate tube to slide inward synchronously and compress the compression spring. The sliding stroke of the control tube causes the second slot on its outer wall to be aligned and connected with the first slot on the outer wall of the intermediate tube in space. The originally blocked airflow channel is instantly connected, and the gas under pressure in the sealed cavity immediately flows into the inner cavity of the intermediate tube through the connecting channel of the first and second slots. Finally, it is sprayed through the air blowing hole to a close distance position with only the depth gap of the ring groove between it and the surface of the steak, and powerfully blows away and dries the moisture attached to the surface of the steak.

[0017] This on-demand air supply mechanism offers several technological advantages over traditional continuous air supply methods. First, it improves energy efficiency. Traditional drying equipment requires all fans or air outlets to operate at full power continuously to ensure coverage of the entire drying area, resulting in a large amount of airflow being wasted by spraying it into empty areas without steaks. Second, this localized air supply method also improves the uniformity and controllability of the drying effect. Since the air outlets only open to supply air at the locations that actually contact the steak, it avoids the complex turbulent flow field formed by the large flow of air in the drying chamber in traditional equipment. The airflow from each air outlet can directly reach the target area on the surface of the steak with the shortest path and least resistance, without being interfered with or diluted by other airflows. This ensures that each drying point receives sufficient and stable airflow, making the drying degree of all parts of the steak surface consistent, effectively solving the problem of localized over-drying or under-drying that is common in traditional equipment.

[0018] This invention constructs a complete segmented, progressive drying process through a spatial layout of multiple sets of drying components arranged in an alternating vertical and horizontal manner. This achieves the removal of residual moisture on the surface of the steak and improves the drying quality. The core concept of this structural design is to decompose the steak drying process into multiple continuous processing stages. Each stage is achieved through the coordinated action of a pair of vertically and horizontally configured drying components. By rationally arranging the relative positions of the air outlet wheels in each set of drying components, every local area on the steak surface can be repeatedly washed by airflow from air holes in different directions throughout the entire conveying process, ensuring no dead spots in the drying process. Specifically, the steak is dried from the dryer... When the steak is fed into the drying chamber, it is first held and dried by the upper and lower drying components on the left side. The air outlet wheel of the upper left drying component blows air to dry the upper surface of the steak for the first time, while the air outlet wheel of the lower left drying component blows air to dry the lower surface of the steak for the first time. Because the air outlet wheels of the upper and lower drying components on the left side are staggered in axial position, the area of ​​the steak surface covered by the upper air outlet wheel and the area covered by the lower air outlet wheel are spatially complementary. This staggered configuration allows the steak to receive targeted airflow at different longitudinal positions on the upper and lower surfaces when it passes through the drying zone on the left side, thus initially removing the free surface moisture.

[0019] The steak then continues to be conveyed forward, lifted and transitioned by the intermediate rollers into the right-side drying area. Here, the upper and lower drying units on the right side perform a second round of air drying on the steak's upper and lower surfaces. Crucially, the air outlets of the two drying units on the right side are also staggered, and the positions of the air outlets on the right side and the corresponding air outlets on the left side are also staggered. This double-staggered configuration ensures that the surface area of ​​the steak receiving airflow during the right-side drying stage is precisely the relatively weaker area during the left-side drying stage, thus reinforcing and perfecting the drying effect on the left side. Through the relay processing of the two drying areas, each local area of ​​the steak surface receives at least two independent drying cycles from air outlets at different axial positions, with some areas even receiving three cycles. Repeated drying processes, including multiple cycles, are employed. The first drying cycle removes most of the surface free moisture, exposing the deeper moisture that was previously blocked by the surface layer and allowing it to migrate and diffuse to the surface. The second drying cycle promptly captures and removes this newly exposed deep moisture, ensuring the steak is dried from the inside out. Simultaneously, the double-sided synchronous clamping drying structure, composed of symmetrically arranged drying components, not only improves drying efficiency but also effectively solves the problem of the steak's posture stability during transport. The upper and lower air outlets apply moderate vertical pressure while drying the steak's surface. This balanced pressure constraint ensures that the steak maintains a stable transport posture under the impact of high-speed airflow, preventing it from flipping or tilting, thus avoiding uneven drying or contamination caused by the steak's unstable posture. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a steak drying machine according to the present invention;

[0021] Figure 2 This is a schematic diagram of the drying rack and air supply pipe in this invention;

[0022] Figure 3 In this invention Figure 1 A schematic diagram of the cross-sectional structure;

[0023] Figure 4 This is a schematic diagram of the drying rack and rotating tube in this invention;

[0024] Figure 5 This is a schematic diagram of the follower wheel and belt in this invention;

[0025] Figure 6 This is a schematic diagram of the structure of the air outlet wheel and the rotor in this invention;

[0026] Figure 7 In this invention Figure 6 A schematic diagram of the cross-sectional structure;

[0027] Figure 8 This is a cross-sectional view of the air outlet wheel and sealing wheel in this invention;

[0028] Figure 9 This is a schematic diagram of the structure of the control tube and the intermediate tube in this invention;

[0029] Figure 10 This is a cross-sectional view of the control tube and intermediate tube in this invention.

[0030] In the diagram: 11. Drying rack; 12. Motor; 13. Drive wheel; 14. Upper inner insert; 15. Lower inner insert; 16. Intermediate roller; 17. Intermediate wheel; 21. Rotating tube; 22. Air outlet; 23. Follower wheel; 24. Transmission belt; 25. Air supply pipe; 26. Air inlet pipe; 27. Rotating wheel; 28. Belt; 29. ​​Inner wheel; 210. Sealing wheel; 211. Opening; 212. Spacer; 213. Air outlet wheel; 214. Annular spring; 215. Sealing cavity; 216. Annular groove; 217. Air blowing hole; 218. Intermediate tube; 219. First slot; 220. First short rod; 221. Control tube; 222. Second slot; 223. Second short rod; 224. Compression spring. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally 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 intended to limit this invention.

[0034] Please see Figures 1-10 A steak drying machine includes a drying rack 11, a motor 12 is provided at the bottom of the drying rack 11, a drive wheel 13 is sleeved at the output end of the motor 12, a set of upper inner blocks 14 and two sets of lower inner blocks 15 are provided inside the drying rack 11, the upper inner blocks 14 and the lower inner blocks 15 are arranged alternately, an intermediate roller 16 is rotatably connected to the center of the drying rack 11, an intermediate wheel 17 is connected to one end of the intermediate roller 16, the intermediate wheel 17 rotates in cooperation with the transmission belt 24, and the intermediate roller 16 is located between the two sets of lower inner blocks 15 and below the upper inner blocks 14;

[0035] It also includes a drying mechanism, which includes rotating tubes 21 arranged in multiple sets. Each set of rotating tubes 21 has multiple sets of air outlets 22 on its surface. One end of each rotating tube 21 is connected to a follower wheel 23. Each set of follower wheels 23 is connected to a drive wheel 13 via a transmission belt 24. The other side wall of the drying rack 11 is provided with an air supply pipe 25. One end of the air supply pipe 25 is connected to an air inlet pipe 26 and is connected to multiple sets of rotating tubes 21. Each set of rotating tubes 21 is rotatably connected to the air supply pipe 25. Each set of rotating tubes 21 is fitted with multiple sets of rotating wheels 27. Every two sets of rotating tubes 21 form a drying assembly, which is connected by a belt 28. Connected to the corresponding rotating wheel 27, two sets of drying components are respectively provided on both sides of the upper inner block 14, and a set of drying components is provided on the left side of the left lower inner block 15 and the right side of the right lower inner block 15. An inner wheel 29 is sleeved on the surface of each rotating tube 21, and the inner wheel 29 is sleeved on the rotating tube 21. A sealing wheel 210 is sleeved on the outside of the inner wheel 29. Multiple sets of openings 211 are opened on the outer wall of the sealing wheel 210. Multiple sets of spacers 212 are provided inside the sealing wheel 210. An air outlet wheel 213 is coaxially sleeved on the outside of the sealing wheel 210. The inner wall of the air outlet wheel 213 is slidably connected to the outer wall of the sealing wheel 210. Annular springs 214 are provided on both side walls, and the other end of the annular springs 214 is fixedly connected to the outer side wall of the inner wheel 29. A sealing cavity 215 is formed between the outer side of the sealing wheel 210 and the inner side of the air outlet wheel 213. An annular groove 216 is provided on the outer side wall of the air outlet wheel 213. Multiple sets of air blowing holes 217 are provided in the annular groove 216. A middle tube 218 is provided in each set of air blowing holes 217. Two sets of first slots 219 are provided on the outer side wall of the middle tube 218. Multiple sets of first short rods 220 are provided in the first slots 219. A control tube 221 is slidably connected in the middle tube 218. Two sets of second slots 222 are provided on the outer side wall of the control tube 221. The second slot 222 is provided with multiple sets of second short rods 223. The first slot 219 is adapted to the control tube 221, and the second slot 222 is adapted to the intermediate tube 218. One end of the control tube 221 is provided with a compression spring 224, and the other end of the compression spring 224 is fixedly connected to the outer wall of the sealing wheel 210. The rotating wheel 27 and the air outlet wheel 213 sleeved on each set of rotating tubes 21 are staggered. The rotating wheel 27 and the air outlet wheel 213 on the two sets of rotating tubes 21 connected by the belt 28 are staggered in the same position, but the belt 28 on the other side of the two sets of rotating tubes 21 connected by the belt 28 corresponds to the position of the air outlet wheel 213.

[0036] In this invention, an air blowing device is connected to the air inlet pipe 26. Gas enters the air delivery pipe 25 through the air inlet pipe 26, and then enters each set of rotating pipes 21 through the air delivery pipe 25. The motor 12 is started, and the motor 12 drives the drive wheel 13 to rotate. The drive wheel 13 drives multiple sets of follower wheels 23 and intermediate wheels 17 to rotate synchronously through the transmission belt 24. The intermediate wheels 17 drive the corresponding intermediate rollers 16 to rotate. The multiple sets of follower wheels 23 drive the corresponding rotating pipes 21 to rotate. Each set of rotating pipes 21 drives the rotating wheel 27 and the air outlet wheel 213 sleeved on its surface to rotate. In each set of drying components, one side of the rotating wheel 27 drives the other side of the rotating wheel 27 to rotate synchronously through the corresponding belt 28.

[0037] The steak to be dried is conveyed to the starting end of the drying mechanism. The steak passes through four sets of drying components, and the conveyed gas blew into the steak through the air blowing holes 217 to dry it. Specifically, the gas enters the inner wheel 29 of each group through multiple sets of air outlet holes 22 on the surface of the rotating tube 21, and then enters the sealing wheel 210 through the gap between each set of spacers 212. It then enters the sealed cavity 215 formed between the sealing wheel 210 and the air outlet wheel 213 through multiple sets of openings 211 on the surface of the sealing wheel 210. At this time, the gas is in a sealed state in the sealed cavity 215 until the steak comes into contact with the corresponding air outlet wheel 213. The air outlet wheel 213 is pressurized and slides relative to the sealing wheel 210, and the ring spring 214 deforms accordingly. Under normal conditions, the intermediate tube 218 and the control tube 221 are in a closed state. In the sealed state, the first slot 219 and the second slot 222 are not connected. However, at this time, the intermediate tube 218 and the control tube 221 corresponding to the position where the air outlet 213 contacts the steak slide relative to each other, and the compression spring 224 is compressed, so that the first slot 219 and the second slot 222 are connected. At this time, the gas in the sealed cavity 215 is blown out through the first slot 219 and the second slot 222 through the air blowing hole 217. This design ensures that only the corresponding position of the air outlet 213 that contacts the steak will deliver gas. The air outlet 213 that does not contact the steak will not deliver gas. Because of the design of the annular groove 216, even if the side wall of the steak contacts the air outlet 213, there is always a gap between it and the air blowing hole 217. The gas blown out of the air blowing hole 217 dries the surface of the steak.

[0038] During the steak drying process, for example, if the steak enters the drying mechanism from the left, the upper left and lower left drying components blow air onto both sides of the steak for drying. At the same time, the upper and lower air outlet rollers 213 also apply appropriate pressure to the surface of the steak. The positions of the air outlet rollers 213 of the upper left and lower left drying components are staggered, so the steak is dried once after passing through the two sets of drying components on the left. The drying effect is better at the position corresponding to the air outlet 217. Afterward, the steak passes through the middle roller 16 and enters the right drying component. The positions of the air outlet rollers 213 of the upper and lower right drying components are also staggered. At the same time, the positions of the air outlet rollers 213 of the upper left and upper right drying components, as well as the positions of the air outlet rollers 213 of the lower left and lower right drying components, are all staggered. This achieves the goal of drying the steak once on the left and then drying it again on the right. At this time, the surface of the steak corresponding to the right air outlet 22 is dried better. Finally, after drying, all steak surfaces enter the next process.

[0039] In all the solutions mentioned above, for connections between two components, welding, bolt and nut connection, bolt or screw connection, or other known connection methods can be selected according to the actual situation. They will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of the present invention 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 the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0040] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here.

[0041] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies and will not be elaborated upon in this invention.

[0042] Of all the solutions mentioned above, those involving the connection between solar panels and batteries can be equipped with essential accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and circuit connections are all existing, well-known, and mature technologies, so their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. A drying machine for steak processing, comprising a drying rack (11), characterized in that: The drying rack (11) is equipped with a motor (12) at its bottom. A drive wheel (13) is fitted onto the output end of the motor (12). The drying rack (11) is equipped with a set of upper inner blocks (14) and two sets of lower inner blocks (15), which are staggered vertically. The drying rack (11) also includes a drying mechanism, which includes a rotating tube (21). Multiple sets of rotating tubes (21) are staggered, and multiple sets of air outlets (22) are opened on the surface of each set of rotating tubes (21). One end of the rotating tube (21) is connected to a follower wheel (23). Each set of follower wheels (23) is connected to the drive wheel (13) via a transmission belt (24). 21) An inner wheel (29) is fitted on the surface of the rotating tube (21). The inner wheel (29) is fitted on the outer side of the inner wheel (29). A sealing wheel (210) is fitted on the outer side wall of the sealing wheel (210). Multiple sets of openings (211) are opened on the outer side wall of the sealing wheel (210). Multiple sets of spacer columns (212) are provided inside the sealing wheel (210). An air outlet wheel (213) is fitted on the outer side of the sealing wheel (210). The inner side wall of the air outlet wheel (213) is slidably connected to the outer side wall of the sealing wheel (210). Annular springs (214) are provided on both sides of the air outlet wheel (213). The other end of the annular springs (214) is fixedly connected to the outer side wall of the inner wheel (29). The sealing wheel (210) A sealed cavity (215) is formed between the outer side and the inner side of the air outlet wheel (213). An annular groove (216) is provided on the outer wall of the air outlet wheel (213). Multiple sets of air blowing holes (217) are provided in the annular groove (216). A middle tube (218) is provided in each set of air blowing holes (217). Two sets of first slots (219) are provided on the outer wall of the middle tube (218). Multiple sets of first short rods (220) are provided in the first slots (219). A control tube (221) is slidably connected in the middle tube (218). Two sets of second slots (222) are provided on the outer wall of the control tube (221). Multiple sets of second short rods (223) are provided in the second slots (222). The first slot (219) is adapted to the control tube (221), and the second slot (222) is adapted to the intermediate tube (218). One end of the control tube (221) is provided with a compression spring (224), and the other end of the compression spring (224) is fixedly connected to the outer wall of the sealing wheel (210). The rotating wheel (27) and the air outlet wheel (213) sleeved on each set of rotating tubes (21) are staggered. The rotating wheel (27) and the air outlet wheel (213) on the two sets of rotating tubes (21) connected by belt (28) are staggered in the same position, but the belt (28) on the two sets of rotating tubes (21) connected by belt (28) on the other side corresponds to the position of the belt (28) and the air outlet wheel (213).

2. The steak drying machine according to claim 1, characterized in that: The drying rack (11) is rotatably connected to an intermediate roller (16) at its center. One end of the intermediate roller (16) is connected to an intermediate wheel (17). The intermediate wheel (17) rotates in cooperation with the transmission belt (24). The intermediate roller (16) is located between two sets of lower inner blocks (15) and below the upper inner block (14).

3. A steak drying machine according to claim 2, characterized in that: The drying rack (11) has an air supply pipe (25) on the other side wall. One end of the air supply pipe (25) is connected to the air inlet pipe (26). The air supply pipe (25) is connected to multiple sets of rotating pipes (21). Each set of rotating pipes (21) is rotatably connected to the air supply pipe (25).

4. A steak drying machine according to claim 3, characterized in that: Each set of rotating tubes (21) is fitted with multiple sets of rotating wheels (27). Every two sets of rotating tubes (21) form a drying assembly, which is connected to the corresponding rotating wheel (27) by a belt (28). Two sets of drying assemblies are provided on both sides of the upper inner block (14). A set of drying assemblies is provided on the left side of the lower inner block (15) on the left and on the right side of the lower inner block (15) on the right.

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