Casing drying box with extrusion structure

Abstract

The invention relates to the technical field of casing drying, in particular to a casing drying box with an extrusion structure. Comprising a box body, plug connectors distributed in a rectangular array are fixedly connected into the box body, fixing pieces distributed at intervals are slidably connected to the plug connectors, the fixing pieces distributed at intervals are jointly and fixedly connected with a drying pipe, and a supporting switching unit is arranged on the drying pipe; the supporting switching unit comprises first supporting air bags distributed in the circumferential direction in an array mode, the first supporting air bags distributed in the circumferential direction in the array mode are all arranged on a drying pipe, second supporting air bags distributed in the circumferential direction in the array mode are arranged on the drying pipe, and a first air conveying pipe and a second air conveying pipe are fixedly connected to the drying pipe. The casing is supported in a switching manner through the first supporting air bag and the second supporting air bag, the inner side and the outer side of the casing are dried at the same time in cooperation with the box body, meanwhile, the contact position of the inner wall of the casing is prevented from being unchanged all the time in the drying process, and therefore the drying uniformity is improved, and the water vapor retention probability is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of casing drying, and particularly relates to a casing drying box with an extrusion structure. Background Art

[0002] As a wrapping material for sausage meat products, casings can be divided into two major categories: natural and artificial. Among them, natural casings are made from the intestines of animals such as pigs, cows, and sheep, and are processed into dried casing products through processes such as mucosal stripping, deep cleaning, and dehydration drying.

[0003] In the prior art, the drying of casings is mostly carried out by sleeving the cleaned casings on a cylindrical pipe with a screen attached to its surface, and then erecting the pipe with the casing on a rack for drying. However, during the existing drying process, the inner wall of the casing and the screen on the pipe are always in a relatively static state, that is, the drying time required at the contact area between the inner wall of the casing and the pipe screen is longer, and it is easier to accumulate the water vapor generated by drying at other positions, resulting in slow drying of the contact surface and water vapor retention. Under the influence of a long time, there is even a risk of bacterial growth, which directly affects the hygienic safety level of the casing. Summary of the Invention

[0004] In order to overcome the above disadvantages, the present invention provides a casing drying box with an extrusion structure.

[0005] The technical solution is as follows: A casing drying box with an extrusion structure includes a box body. An air inlet pipe and an air outlet pipe are provided on the box body. Plug connectors distributed in a rectangular array are fixedly connected inside the box body. Fixing members distributed at intervals are slidably connected to the plug connectors. The fixing members distributed at intervals are commonly fixedly connected to a drying pipe. A support switching unit is provided on the drying pipe. The support switching unit includes first support air bags distributed in a circumferential array. The first support air bags distributed in a circumferential array are all arranged on the drying pipe. Second support air bags distributed in a circumferential array are provided on the drying pipe. The first support air bags distributed in a circumferential array and the second support air bags distributed in a circumferential array are staggered. A first air pipe and a second air pipe are fixedly connected to the drying pipe. The first air pipe is communicated with the second support air bags distributed in a circumferential array. The second air pipe is communicated with the first support air bags distributed in a circumferential array. A disassembly mechanism for disassembling the drying pipe is provided on the box body. An extrusion mechanism for extruding the casing is provided on the box body.

[0006] Preferably, the air inlet pipe is located above the air outlet pipe.

[0007] Preferably, exhaust holes distributed at intervals are provided on both the first support air bag and the second support air bag.

[0008] Preferably, both the first support airbag and the second support airbag are spiral-shaped.

[0009] Preferably, the disassembly mechanism includes fixing seats distributed in a rectangular array. The fixing seats distributed in a rectangular array are all fixedly connected to the inside of the box, and the fixing seats distributed in a rectangular array correspond to the drying tubes distributed in a rectangular array one by one. The fixing seats are slidably and rotationally connected with sliding sleeves. The drying tubes are fixedly connected with connecting pieces, and the connecting pieces are threadedly connected to the sliding sleeves.

[0010] Preferably, both ends of the drying tube are provided with transfer cavities. The drying tube is provided with air inlets distributed in a circumferential array and symmetrically. The air inlets distributed in a circumferential array communicate with the adjacent transfer cavities. The drying tube is provided with two pipes, and the two pipes on the drying tube respectively communicate with the adjacent transfer cavities.

[0011] Preferably, the exhaust holes distributed at intervals on the first support airbag are located in the middle thereof, and the exhaust holes distributed at intervals on the second support airbag are located in the middle thereof.

[0012] Preferably, the extrusion mechanism includes a fixed rod fixedly connected to the inside of the box. A lead screw is rotatably connected to the inside of the box. The fixed rod is slidably connected with a sliding frame. The sliding frame is threadedly connected to the lead screw. The sliding frame is fixedly connected with sleeves distributed in a rectangular array. The sleeves distributed in a rectangular array correspond to the drying tubes distributed in a rectangular array one by one. The sliding frame is fixedly connected with a connecting pipe group. The connecting pipe group is fixedly connected and communicates with a shunt member symmetrically and distributed in a rectangular array. The shunt member passes through the adjacent sleeves. The symmetrically distributed shunt members are jointly rotatably connected and communicate with symmetrically distributed extrusion airbags. The extrusion airbags are located inside the sleeves.

[0013] Preferably, a flexible member is fixedly connected inside the sleeve. The flexible member is mutually extruded with the extrusion airbag. The shunt member passes through the adjacent flexible members.

[0014] Preferably, mirror-image distributed flow guiding members are fixedly connected inside the drying tube. One side of the connecting piece close to the adjacent flow guiding member is provided as a conical surface.

[0015] Compared with the prior art, the present invention has the following advantages: The present invention switches the support of the casing through the first support airbag and the second support airbag. While drying the inner and outer sides of the casing simultaneously with the cooperation of the box body, it prevents the contact position of the inner wall of the casing from remaining unchanged during the drying process, thereby improving the drying uniformity and reducing the probability of water vapor retention; by the circumferentially uniform expansion of the extrusion airbag, the casing, the first support airbag and the flexible member are simultaneously extruded, so that the flow area of the spiral gas flow channel at the extruded part is reduced, forming a throat structure. According to the Venturi effect, when the air flow in the spiral flow channel is restricted and flows through the reduced cross-section of the flow-through area, the air flow velocity will increase. According to Bernoulli's law, the increase in flow velocity is accompanied by a decrease in fluid pressure. In this way, the high-speed flow of the air flow at the throat enhances the convective heat transfer to the surface of the casing, accelerates the evaporation of moisture, and at the same time, the low pressure at the throat can actively suck moisture, reducing the probability of water vapor retention on the surface of the casing. Moreover, the rotational flow of the spiral flow channel can enhance the shear force of the throat air flow, further destroying the steam layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structure schematic diagram of the present invention; Figure 2 is a three-dimensional structure schematic diagram of the internal structure of the box body of the present invention; Figure 3 is a three-dimensional structure schematic diagram of the box body and the plug-in member of the present invention; Figure 4 is a three-dimensional structure schematic diagram of the first support airbag and the second support airbag of the present invention; Figure 5 is a three-dimensional structure schematic diagram of the plug-in member and the fixing member of the present invention; Figure 6 is a three-dimensional structure schematic diagram of the drying pipe and the first support airbag of the present invention; Figure 7 is a three-dimensional structure schematic diagram of the drying pipe and the flow guiding member of the present invention; Figure 8 is a three-dimensional structure schematic diagram of the fixing rod, the lead screw and the sliding frame of the present invention; Figure 9 is a three-dimensional structure sectional view of the extrusion airbag and the flexible member of the present invention.

[0017] Wherein: 1-box body, 2-intake pipe, 3-outlet pipe, 4-plug-in member, 5-fixing member, 6-drying pipe, 7-first support airbag, 8-second support airbag, 9-first air delivery pipe, 10-second air delivery pipe, 11-fixing seat, 12-sliding sleeve, 13-connecting member, 131-flow guiding member, 14-transfer cavity, 15-air inlet, 16-fixing rod, 17-lead screw, 18-sliding frame, 19-ring, 20-connecting pipe group, 21-shunt member, 22-extrusion airbag, 23-flexible member. DETAILED DESCRIPTION OF THE INVENTION

[0018] The present invention will be further described below in conjunction with specific embodiments. It should also be noted that, unless otherwise clearly defined and limited, terms such as "set" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0019] Embodiment 1 An intestinal casing drying oven with an extrusion structure disclosed in this embodiment is used to continuously switch its support position during the drying of the intestinal casing to achieve the purpose of uniform drying.

[0020] As Figures 1 - 6As shown in the figure, the drying oven includes a box body 1. There are two symmetrically distributed sealing doors on the front side of the box body 1, and there is glass on the sealing doors, which is convenient for observing the drying condition of the casing inside the box body 1. An air inlet pipe 2 and an air outlet pipe 3 are arranged on the box body 1. The air inlet pipe 2 is located above the air outlet pipe 3. In this way, when the box body 1 starts to work, the hot air gradually and evenly fills the box body 1 from top to bottom, ensuring the drying efficiency. A gas distribution module (the gas distribution module is a prior art for evenly dispersing hot air and is not shown in the figure) is arranged on one side of the box body 1 close to the air inlet pipe 2. The air inlet pipe 2 is communicated with the gas distribution module, the gas distribution module is communicated with the box body 1, and the air outlet pipe 3 is communicated with the box body 1. Eight plug connectors 4 distributed in a rectangular array are fixedly connected to the left inner wall of the box body 1. A fixing member 5 with spaced distribution is slidably connected to the plug connector 4. The fixing members 5 with spaced distribution are jointly fixedly connected to a drying pipe 6. The plug connector 4 and the fixing member 5 are cross-shaped pluggings to ensure the stability of the drying pipe 6 after being plugged. A support switching unit is arranged on the drying pipe 6; the support switching unit includes four first support air bags 7 distributed in a circumferential array. The four first support air bags 7 are all arranged on the drying pipe 6. Four second support air bags 8 distributed in a circumferential array are arranged on the drying pipe 6. The four first support air bags 7 and the four second support air bags 8 are staggered. The number of the first support air bags 7 and the second support air bags 8 is only for illustration in the figure, and their numbers can be adjusted in real time according to requirements. The expansion states of the first support air bags 7 and the second support air bags 8 are the same as the contraction states of the first support air bags 7 and the second support air bags 8. Exhaust holes with spaced distribution are arranged on both the first support air bags 7 and the second support air bags 8. Both the first support air bags 7 and the second support air bags 8 are spiral. Taking one drying pipe 6 as an example, when the first support air bags 7 are in the expanded state to support the casing, the four first support air bags 7, the drying pipe 6 and the casing jointly form four spiral flow channels. The hot air in the first support air bags 7 is discharged into the spiral flow channels through the exhaust holes with spaced distribution on them. When the gas flows along the spiral path, centrifugal force will be generated, forming complex secondary flows (such as eddy currents or swirls), enhancing the turbulence effect, improving the convective heat transfer and moisture diffusion efficiency on the surface of the casing, and thus improving the drying effect on the inner wall of the casing. The first support air bags 7 and the second support air bags 8 are small specific heat capacity elastic air bags, which are convenient for the temperature to be transferred to the casing and the spiral flow channels. A first air pipe 9 and a second air pipe 10 are fixedly connected to the drying pipe 6. The first air pipe 9 is communicated with all the second support air bags 8 distributed in a circumferential array. The second air pipe 10 is communicated with all the first support air bags 7 distributed in a circumferential array. Both the first air pipe 9 and the second air pipe 10 are communicated with the external hot air supply module through pipelines, used to inject hot air into the first support air bags 7 and the second support air bags 8, and at the same time control their expansion states according to the injection air pressure. When the first support air bags 7 and the second support air bags 8 are in the contracted state, the air holes on them are blocked by the drying pipe 6. A disassembly mechanism for disassembling the drying pipe 6 is arranged on the box body 1. An extrusion mechanism for extruding the casing is arranged on the box body 1.

[0021] As Figure 3 , Figure 6 and Figure 7 shown, the disassembly mechanism includes eight fixing seats 11 distributed in a rectangular array. The eight fixing seats 11 are all fixedly connected to the right inner wall of the box body 1, and the eight fixing seats 11 correspond to the eight drying tubes 6 one by one. The fixing seat 11 is slidably and rotatably connected with a sliding sleeve 12. A thread is provided in the left part of the sliding sleeve 12. The drying tube 6 is fixedly connected with a connecting piece 13. A thread is provided in the right part of the connecting piece 13. The connecting piece 13 is threadedly connected with the sliding sleeve 12. After the casing is sleeved on the drying tube 6, the left side of the drying tube 6 is inserted into the socket 4 through four fixing pieces 5. Then, the sliding sleeve 12 is pulled to the left until it contacts the connecting piece 13. The threads on the connecting piece 13 and the sliding sleeve 12 are gradually engaged. At the same time, the sliding sleeve 12 is rotated, and the sliding sleeve 12 gradually moves to the left along with the thread. After the engagement is completed, the installation is completed.

[0022] As Figures 4 - 7 shown, transfer chambers 14 are provided at both ends of the drying tube 6. The transfer chambers 14 are annular. Air inlets 15 distributed in a circumferential array are provided on the drying tube 6. The air inlets 15 distributed in a circumferential array communicate with the adjacent transfer chambers 14. Two pipes are provided on the drying tube 6. The two pipes on the drying tube 6 respectively communicate with the adjacent transfer chambers 14. The air inlets 15 distributed in a circumferential array are staggered with both the first support airbag 7 and the second support airbag 8. The exhaust holes distributed at intervals on the first support airbag 7 are located in the middle thereof. The exhaust holes distributed at intervals on the second support airbag 8 are located in the middle thereof. Thus, when drying the casing, the hot air flow in the spiral flow channel flows from the middle to the left and right sides, thereby reducing the probability of the moisture precipitated from the casing accumulating in the middle of the casing.

[0023] As Figure 3 , Figure 8 and Figure 9As shown in the figure, the extrusion mechanism includes a fixed rod 16, which is fixedly connected to the inside of the box body 1. A lead screw 17 is rotatably connected to the inside of the box body 1. The lead screw 17 is externally connected with power to drive the lead screw 17 to rotate. A sliding frame 18 is slidably connected to the fixed rod 16. The sliding frame 18 is threadedly connected to the lead screw 17. A collar 19 distributed in a rectangular array is fixedly connected to the sliding frame 18. Initially, the sliding frame 18 and the collars 19 thereon are both located at the left part of the drying tubes 6 distributed in a rectangular array. The collars 19 distributed in a rectangular array correspond to the drying tubes 6 distributed in a rectangular array one by one, and the axes of the collars 19 coincide with the axes of the adjacent drying tubes 6. A communicating pipe group 20 is fixedly connected to the sliding frame 18. The communicating pipe group 20 is communicated with an external air supply module to control the stable pressure inside the communicating pipe group 20. The communicating pipe group 20 is fixedly connected and communicated with a shunt member 21 distributed symmetrically and in a rectangular array. The shunt member 21 passes through the adjacent collars 19. The symmetrically distributed shunt members 21 are jointly rotatably connected and communicated with extrusion air bags 22 distributed symmetrically up and down. The extrusion air bags 22 are semi-circular rings, and elastic forming ribs are arranged inside the extrusion air bags 22 to keep the shape of the extrusion air bags 22 always maintained in a semi-circular ring. When the pressure inside the communicating pipe group 20 increases, the extrusion air bags 22 expand. When the pressure inside the communicating pipe group 20 decreases, the extrusion air bags 22 contract. The extrusion air bags 22 are located inside the collars 19. A flexible member 23 is fixedly connected inside the collars 19. The contact surface between the flexible member 23 and the extrusion air bags 22 is smooth, and the flexible member 23 is used to support the extrusion air bags 22. The flexible member 23 and the extrusion air bags 22 are mutually extruded, and the shunt member 21 passes through the adjacent flexible members 23.

[0024] In this embodiment, the working process of the drying box is as follows: Drying preparation: Rotate the sliding sleeve 12 to disconnect it from the connecting member 13. After initially squeezing out the water from the casing, gradually put the casing on the drying tube 6 from right to left. After the sleeving is completed, connect both the first air pipe 9 and the second air pipe 10 to the external hot air supply module through pipes, and connect the transfer chamber 14 to the external processing module through pipes. According to the above, sleeve the casing on all the drying tubes 6 and connect the pipes (fix the two ends of the casing to the two ends of the drying tube 6), connect the plug-in member 4 with the fixing member 5, connect the connecting member 13 with the sliding sleeve 12, and then connect the air inlet pipe 2 to the external hot air supply module and the air outlet pipe 3 to the external processing module. The preparation work is completed.

[0025] Drying process: Start the external hot gas supply module and the external processing module. The external hot gas supply module injects hot gas into the intake pipe 2 and the second gas delivery pipe 10. The hot gas gradually and evenly fills the box body 1 from top to bottom through the intake pipe 2. The original gas in the box body 1 is discharged to the external processing module through the outlet pipe 3. Taking a drying pipe 6 as an example, the hot gas is injected into four first support air bags 7 through the second gas delivery pipe 10. The first support air bags 7 gradually expand and hold up the casing. The hot gas in the first support air bags 7 is discharged into the spiral flow channel through the exhaust holes distributed at intervals thereon. When the gas flows along the spiral path, centrifugal force will be generated, forming complex secondary flows (such as eddy currents or swirls), enhancing the turbulence effect, and improving the convective heat transfer and moisture diffusion efficiency on the surface of the casing, so as to dry the inner wall of the casing. At the same time, the hot gas in the box body 1 synchronously dries the outer wall of the casing. After drying for a period of time (this event is the set switching time), the external hot gas supply module injects hot gas into the first gas delivery pipe 9, and the second support air bags 8 gradually expand, thereby supporting the casing. At the same time, the external hot gas supply module controls the contraction of the first support air bags 7 through the second gas delivery pipe 10, so as to lose contact with the inner wall of the casing. And at this time, the spiral flow channel between two adjacent second support air bags 8 completely includes the part of the inner wall of the casing in contact with the first support air bags 7, preventing the contact position on the inner wall of the casing from remaining unchanged during the drying process, thereby improving the drying uniformity and reducing the probability of water vapor retention.

[0026] During the above drying process, the hot gas discharged from the exhaust holes on the first support air bags 7 flows from the middle of the spiral flow channel to the left and right ends. The water vapor dried from the inner wall of the casing moves synchronously to the left and right ends under the drive of the hot gas, and flows into the transfer cavity 14 through the air inlets 15 distributed in a circumferential array. Subsequently, the hot gas containing water vapor (water vapor) flows through the pipeline to the external processing module, preventing the hot gas containing water vapor from mixing into the box body 1, thereby affecting the overall drying environment of the box body 1.

[0027] During the drying process of the casing, the water vapor it releases will form a steam layer near the surface, or release grease, which adheres near the casing and affects the drying efficiency of the casing. To solve the above problems, an external power is activated to drive the lead screw 17 to rotate. The lead screw 17 drives the sliding frame 18 and the parts thereon to move to the right. Taking a collar 19 as an example (and taking the case when the first support airbag 7 expands), when the collar 19 drives the extrusion airbag 22 to move to the right until it contacts the casing, the external air supply module injects pressure into the two extrusion airbags 22 through the connecting pipe group 20 and the shunt member 21. The extrusion airbags 22 expand uniformly in the circumferential direction, and at the same time squeeze the casing, the first support airbag 7 and the flexible member 23, so that the flow area of the squeezed part of the spiral gas flow channel is reduced, forming a throat structure. According to the Venturi effect, when the air flow in the spiral flow channel is restricted and flows through the reduced cross-sectional area of the flow, the air flow velocity will increase. And according to Bernoulli's law, the increase in flow velocity is accompanied by a decrease in fluid pressure. In this way, the high-speed flow of the air flow in the throat enhances the convective heat transfer to the surface of the casing, accelerates the evaporation of moisture, and at the same time the low pressure in the throat can actively suck moisture, reducing the probability of water vapor staying on the surface of the casing. Moreover, the rotational flow of the spiral flow channel can enhance the shear force of the throat air flow, further destroying the steam layer.

[0028] As the above-mentioned extrusion airbag 22 continuously moves to the right, the throat structure area of the spiral gas flow channel moves to the right synchronously, so as to ensure uniform drying of the casing. And during the process of moving to the right, the extrusion airbag 22 rotates synchronously by itself, so that the rolling friction exists between the casing and the extrusion airbag 22, thereby reducing the probability of casing breakage. When the extrusion airbag 22 moves to the right end of the casing, the external power controls the lead screw 17 to reverse, so that the sliding frame 18 drives the extrusion airbag 22 to move to the left to reset.

[0029] Until the casing is dried, the user removes the casing from the drying pipe 6 and takes it out of the box body 1 one by one.

[0030] Embodiment 2 A casing drying box with an extrusion structure disclosed in this embodiment is further improved on the basis of Embodiment 1.

[0031] The structure, connection relationship and working process of the detection device in Embodiment 1 will not be elaborated here. The working principle of the following structure will be mainly described, and the same applies to the subsequent embodiments.

[0032] Such as Figures 4 - 7As shown, the drying tube 6 is fixedly connected with a mirror-distributed guide member 131, which is an electric fan. When the drying tube 6 is installed, the guide member 131 is connected to the outside world synchronously. When the guide member 131 is working, it guides the gas to flow from left to right, and the hot air in the box body 1 keeps the temperature of the drying tube 6 stable, so that the casing is dried more stably. The left side of the connecting member 13 is set as a cone. After the hot air has completed the heat exchange with the drying tube 6, it impacts on the cone surface on the left side of the guide member 131 under the guidance of the right side guide member 131 and disperses, thereby improving the mixing degree of the gas in the box body 1 (air temperature uniformity).

[0033] The technical principles of the embodiments of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the embodiments of the present invention and cannot be interpreted in any way as limiting the protection scope of the embodiments of the present invention. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the embodiments of the present invention without creative work, and these methods will fall within the protection scope of the embodiments of the present invention.

Claims

1. A casing drying oven with an extrusion structure, characterized in that: The invention comprises a box body (1), the box body (1) being provided with an air inlet pipe (2) and an air outlet pipe (3), the box body (1) being fixedly connected with plug-in components (4) distributed in a rectangular array, the plug-in components (4) being slidably connected with fixed components (5) distributed at intervals, the fixed components (5) distributed at intervals being commonly fixedly connected with a drying pipe (6), and the drying pipe (6) being provided with a support switching unit; The support switching unit comprises first support airbags (7) distributed in a circumferential array, the first support airbags (7) distributed in a circumferential array are all arranged on the drying tube (6), the drying tube (6) is provided with second support airbags (8) distributed in a circumferential array, the first support airbags (7) distributed in a circumferential array and the second support airbags (8) distributed in a circumferential array are arranged alternately, the drying tube (6) is fixedly connected with a first air supply pipe (9) and a second air supply pipe (10), the first air supply pipe (9) is communicated with the second support airbags (8) distributed in a circumferential array, the second air supply pipe (10) is communicated with the first support airbags (7) distributed in a circumferential array, the box body (1) is provided with a disassembly mechanism for disassembling the drying tube (6), and the box body (1) is provided with an extrusion mechanism for extruding casings.

2. The casing drying oven with an extrusion structure according to claim 1, characterized in that: The air inlet pipe (2) is located above the air outlet pipe (3).

3. The casing drying oven with an extrusion structure according to claim 2, characterized in that: The first supporting airbag (7) and the second supporting airbag (8) are both provided with exhaust holes distributed at intervals.

4. The casing drying oven with an extrusion structure according to claim 3, characterized in that: The first supporting airbag (7) and the second supporting airbag (8) are both spiral-shaped.

5. The casing drying oven with an extrusion structure according to claim 4, characterized in that: The disassembly mechanism comprises fixed seats (11) distributed in a rectangular array, the fixed seats (11) distributed in a rectangular array are all fixedly connected to the box body (1), and the fixed seats (11) distributed in a rectangular array correspond one to one with the drying tubes (6) distributed in a rectangular array, the fixed seats (11) slide and the rotating ring is connected to a sliding sleeve (12), the drying tube (6) is fixedly connected to a connecting piece (13), and the connecting piece (13) is threadedly connected to the sliding sleeve (12).

6. The casing drying oven with an extrusion structure according to claim 5, characterized in that: Transfer chambers (14) are provided at both ends of the drying tube (6); air inlets (15) are arranged in a circumferential array and are symmetrically distributed on the drying tube (6); the air inlets (15) distributed in the circumferential array are connected to adjacent transfer chambers (14); and two pipes are arranged on the drying tube (6); the two pipes on the drying tube (6) are respectively connected to adjacent transfer chambers (14).

7. The casing drying oven with an extrusion structure according to claim 6, characterized in that: The exhaust holes distributed at intervals on the first supporting airbag (7) are located in the middle thereof, and the exhaust holes distributed at intervals on the second supporting airbag (8) are located in the middle thereof.

8. The casing drying oven with an extrusion structure according to claim 7, characterized in that: The extrusion mechanism comprises a fixed rod (16), the fixed rod (16) being fixedly connected to the box body (1), a lead screw (17) being rotatably connected to the box body (1), a sliding frame (18) being slidably connected to the fixed rod (16), the sliding frame (18) being threadedly connected to the lead screw (17), the sliding frame (18) being fixedly connected to sleeve rings (19) distributed in a rectangular array, the sleeve rings (19) distributed in a rectangular array corresponding one to one to the drying tubes (6) distributed in a rectangular array, a connecting pipe group (20) being fixedly connected to the sliding frame (18), the connecting pipe group (20) being fixedly connected to and connected to symmetrically distributed diverter pieces (21) distributed in a rectangular array, the diverter pieces (21) passing through adjacent sleeve rings (19), the symmetrically distributed diverter pieces (21) being rotatably connected together and connected to symmetrically distributed extrusion air bags (22), the extrusion air bags (22) being located in the sleeve rings (19).

9. The casing drying oven with an extrusion structure according to claim 8, characterized in that: A flexible member (23) is fixedly connected inside the sleeve ring (19), the flexible member (23) and the extrusion airbag (22) are mutually extruded, and the flow divider (21) passes through the adjacent flexible member (23).

10. The casing drying oven with an extrusion structure according to claim 9, characterized in that: The drying tube (6) is fixedly connected with flow guides (131) distributed in a mirror image, and a side of the connecting piece (13) adjacent to the flow guide (131) is arranged as a conical surface.

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