Air sealing device of drying chamber

Abstract

The invention relates to the technical field of automobile coating and final assembly production lines, in particular to a drying chamber air sealing device which comprises a drying chamber, vertically-arranged communicating chambers are installed on the two parallel side walls in the drying chamber, and a middle chamber which is fixedly connected with the drying chamber and used for installing an air curtain fan is arranged on one side of each communicating chamber. A filter chamber fixedly connected with the drying chamber is arranged on the side, away from the communicating chambers, of the middle chamber, a communicating pipe is installed between the two communicating chambers, a first vent is formed in the outer surface of the communicating pipe, an exhaust port is formed in the face, facing the center area of the drying chamber, of the filter chamber, a filter part is installed on the inner side of the exhaust port, and a wind direction adjusting part is installed on the outer side of the exhaust port. The drying room has the following beneficial effects that the mode of blowing air from the two sides is adopted, on one hand, the improvement cost of an original drying room is reduced, on the other hand, holes are formed in the side plates to suck air, blown air forms circulation, and less heat overflow is achieved.

Description

Technical Field

[0001] The invention relates to an air sealing device for a drying chamber, belonging to the technical field of automobile coating and assembly production lines. Background Art

[0002] Curing (drying) is one of the three basic processes of industrial coating lines and an important process for coating film formation. The equipment used (drying room) is the key equipment of industrial coating lines, and its energy consumption directly affects the coating cost. As coating lines are changing with the general trend, more and more old lines are being renovated, and straight-through drying structures are also common in coating lines. The straight-through drying structure is a drying room that uses top blowing and partial side blowing. This structure has the problem of temperature leakage at the end of the air seal, which affects the normal operation of the spray booth. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a drying chamber air sealing device to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a drying chamber air sealing device, including a drying chamber, wherein two parallel side walls in the drying chamber are each provided with a vertically arranged connecting chamber, one side of the connecting chamber is provided with an intermediate chamber for installing an air curtain fan connected and fixed to the drying chamber, the side of the intermediate chamber facing away from the connecting chamber is provided with a filter chamber connected and fixed to the drying chamber, a connecting pipe is installed between the two connecting chambers, a first air vent is provided on the outer surface of the connecting pipe, an air suction pipe connected and fixed to the connecting pipe is provided on the outer side of the first vent, an air suction port is provided on the outer surface of the air suction pipe, a second air vent is provided in the area of ​​the connecting chamber covered by the connecting pipe, an exhaust port is provided on the side of the filter chamber facing the central area of ​​the drying chamber, a filter element is installed on the inner side of the exhaust port, a wind direction adjusting element is installed on the outer side of the exhaust port, a sealing plate is installed on the top of the drying chamber, and the sealing plate is arranged on the side of the drying chamber close to the filter chamber.

[0005] Specifically, the filter element includes a filter screen, a filter screen is provided on the inner side of the exhaust port, a cover shell connected to the filter screen by screws is provided on the filter screen, a rectangular opening is provided in the area of ​​the cover shell covered by the filter screen, a side of the cover shell facing the exhaust port is open, and the open end of the cover shell is connected to the filter chamber by multiple screws.

[0006] The cam is connected to the side panel with two short extensions, and the extension socket is connected to the side panel with two extensions being connected with the spring which is fixed to the side panel.

[0007] Specifically, an inner tube is sleeved on the bolt near its head, and an outer tube is sleeved on the inner tube, and one end of the outer tube near the bolt head is connected and fixed with a connecting ring, and the connecting ring is connected and fixed to the inner tube, and a piston ring is slidably installed in the space formed by the inner tube and the outer tube, and two guide holes are symmetrically provided on one side of the piston ring, and a guide rod is inserted in the guide hole, and an end of the guide rod away from the connecting ring is connected and fixed with a support ear, and the support ear is connected and fixed to the outer tube, and a spring is provided between the support ear and the piston ring, and the spring is sleeved on the guide rod, and two connecting rods are symmetrically installed on the side of the piston ring away from the connecting ring, and the connecting rod and the guide rod are alternately arranged, and the end of the connecting rod away from the piston ring extends to the outside of the outer tube and is connected and fixed with a supporting ring, and the support ring is sleeved on the bolt, and a valve is installed on the outer surface of one end of the outer tube near the connecting ring.

[0008] Specifically, two positioning holes are symmetrically provided on one side of the piston ring, and one end of the connecting rod away from the supporting ring is fixed in the positioning hole.

[0009] Specifically, the connecting chamber includes a first rectangular plate, and two parallel inner walls of the drying chamber are each provided with a vertically arranged first rectangular plate installed by screws, an end of the first rectangular plate away from the inner wall of the drying chamber is provided with a second rectangular plate by screws, and an end of the second rectangular plate away from the first rectangular plate is provided with a third rectangular plate by screws, the connecting pipe is installed between the two second rectangular plates by screws, and second vents in the area covered by the connecting pipe are provided on opposite surfaces of the two second rectangular plates, the first rectangular plate, the second rectangular plate, the third rectangular plate and an inner wall of the drying chamber form a connecting chamber, the intermediate chamber includes a fourth rectangular plate, an end of the second rectangular plate away from the first rectangular plate is provided with a fourth rectangular plate by screws, the fourth rectangular plate is arranged vertically to the third rectangular plate, and the fourth rectangular plate is away from the third rectangular plate. A fifth rectangular plate is installed at one end thereof by screws, the fifth rectangular plate is arranged in parallel with the third rectangular plate, and the end of the fifth rectangular plate away from the fourth rectangular plate is connected and fixed to the inner wall of the drying chamber by screws, the fifth rectangular plate, the fourth rectangular plate, the third rectangular plate and an inner wall of the drying chamber form an intermediate chamber, the air inlet end of the air curtain fan passes through the third rectangular plate, and the air outlet end of the air curtain fan passes through the fifth rectangular plate, the filter chamber comprises a sixth rectangular plate, the end of the fifth rectangular plate away from the inner wall of the drying chamber is installed with a sixth rectangular plate by screws, the sixth rectangular plate is arranged in parallel with the fourth rectangular plate, and the end of the sixth rectangular plate away from the fourth rectangular plate is connected and fixed to the inner wall of the drying chamber by screws, an exhaust outlet is opened on one side of the sixth rectangular plate, and the sixth rectangular plate, the fifth rectangular plate and two adjacent inner walls of the drying chamber form a filter chamber.

[0010] Beneficial effects of the present invention: 1. A connecting chamber is formed by using a first rectangular plate, a second rectangular plate, a third rectangular plate and an inner wall of a drying chamber, an intermediate chamber is formed by using a fifth rectangular plate, a fourth rectangular plate, a third rectangular plate and an inner wall of a drying chamber, and a filter chamber is formed by using a sixth rectangular plate, a fifth rectangular plate and two adjacent inner walls of the drying chamber, thereby realizing a modular design of the connecting chamber, the intermediate chamber and the filter chamber, which is convenient for maintenance and can be disassembled.

[0011] 2. Use a blocking plate to block the top blowing port on the top of the original drying room. When the air curtain fan is working, the air in the drying room flows through the channel formed by the suction pipe, connecting pipe, and filter chamber, so as to achieve the method of blowing air on both sides. On the one hand, it reduces the cost of renovating the original drying room. On the other hand, the side plate holes are opened to absorb air, so that the blown air forms a circulation and less heat spillover is achieved.

[0012] 3. Adjust the inclination angle of the short wind shield and the long wind shield. At this time, the position of the bolt in the arc groove changes. When the angles of the short wind shield and the long wind shield meet the needs, the relative positions of the short wind shield, the long wind shield and the filter chamber can be limited by matching the bolts and nuts. The wind direction discharged from the exhaust port changes, and the wind flow angle can be adjusted as needed.

[0013] 4. When installing the bolts and nuts, first use the inflation equipment to inject air into the space formed by the inner tube and the outer tube to move the piston ring away from the connecting ring. At this time, the piston ring drives the support ring to move away from the outer tube through the connecting rod. At this time, a gap is formed between the support ring and the outer tube, allowing the bolt to pass through the inner tube and the support ring. Furthermore, when installing the bolts, there is a structure formed by the outer tube, the support ring and other components between the short support plate, the long support plate and the corresponding bolt head. When the bolts and nuts are difficult to separate due to high temperature, the valve is opened. Under the action of the spring rebound force, the piston ring moves away from the support ring, so that there is a gap between the short support plate, the long support plate and the corresponding bolt head, providing space for cutting off the bolts, so that the bolts and nuts that are difficult to separate can be removed without damaging other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a structural schematic diagram of a drying chamber air sealing device of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 It is a schematic diagram of the assembly of an inner cylinder, an outer cylinder, nuts and bolts in a drying chamber air sealing device of the present invention; Figure 4 It is a schematic diagram of the assembly of a support ring, a connecting ring and an outer cylinder in a drying chamber air sealing device of the present invention; Figure 5 It is a partial cross-sectional assembly diagram of a piston ring, a support ring, an inner cylinder, a connecting ring and an outer cylinder in a drying chamber air sealing device of the present invention; Figure 6 It is a schematic diagram of the assembly of a spring, a guide rod, a piston ring, a support ring and an inner cylinder in a drying chamber air sealing device of the present invention; In the figure: 1, drying chamber, 2, connecting chamber, 3, intermediate chamber, 4, filter chamber, 5, filter screen, 6, blocking plate, 7, cover shell, 8, fifth rectangular plate, 9, fourth rectangular plate, 10, third rectangular plate, 11, first rectangular plate, 12, suction pipe, 13, suction port, 14, first air vent, 15, connecting pipe, 16, second air vent, 17, second rectangular plate, 18, short support plate, 19, arc groove, 20, bolt, 21, short wind shield plate, 22, long wind shield plate, 23, long support plate, 24, nut, 25, long side plate, 26, short side plate, 27, sixth rectangular plate, 28, support ring, 29, outer cylinder, 30, valve mouth, 31, inner cylinder, 32, connecting rod, 33, connecting ring, 34, piston ring, 35, spring, 36, guide rod, 37, support ear. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0016] See also Figure 1 The present invention provides a technical solution: a drying chamber air sealing device, comprising a drying chamber 1, wherein two parallel side walls in the drying chamber 1 are each provided with a vertically arranged connecting chamber 2, an intermediate chamber 3 for installing an air curtain fan connected and fixed to the drying chamber 1 is provided on one side of the connecting chamber 2, a filter chamber 4 connected and fixed to the drying chamber 1 is provided on the side of the intermediate chamber 3 facing away from the connecting chamber 2, a connecting pipe 15 is installed between the two connecting chambers 2, a first vent 14 is provided on the outer surface of the connecting pipe 15, an air suction pipe 12 connected and fixed to the connecting pipe 15 is provided on the outer side of the first vent 14, an air suction port is provided on the outer surface of the air suction pipe 12, and the connecting chamber 2 is connected to the connecting pipe 15 by the connecting pipe. A second vent 16 is provided in the area covered by 15, an exhaust port is provided on one side of the filter chamber 4 facing the central area of ​​the drying chamber 1, a blocking plate 6 is installed on the top of the drying chamber 1, and the blocking plate 6 is arranged on a side of the drying chamber 1 close to the filter chamber 4. The blocking plate 6 is used to block the top blowing port on the top of the original drying chamber 1. When the air curtain fan is working, the air in the drying chamber 1 flows through the channel formed by the suction pipe 12, the connecting pipe 15, and the filter chamber 4, so as to adopt a two-side blowing method. On the one hand, the modification cost of the original drying chamber 1 is reduced, and on the other hand, the side plate holes are used to suck air, so that the blown air forms a circulation, and less heat spillover is achieved.

[0017] See also Figure 1 and Figure 2 A filter screen 5 is provided on the inner side of the exhaust port, and a cover shell 7 connected to the filter screen 5 by screws is provided on the filter screen 5. A rectangular opening is provided in the area of ​​the cover shell 7 covered by the filter screen 5. The side of the cover shell 7 facing the exhaust port is open. The open end of the cover shell 7 is connected to the filter chamber 4 by multiple screws, and the filter screen 5 filters the gas.

[0018] participate Figure 1 and Figure 2 A short windshield plate 21 is hinged at one edge of the exhaust port, and short side plates 26 are connected and fixed at both ends of the short windshield plate 21. Two short support plates 18 are arranged on the outside of the short windshield plate 21, and the short support plates 18 are connected and fixed to the filter chamber 4. The two short support plates 18 are in sliding contact with the two short side plates 26 respectively. A long windshield plate 22 is hinged at the edge of one side of the exhaust port away from the short windshield plate 21, and long side plates 25 are connected and fixed at both ends of the long windshield plate 22. Two long support plates 23 are arranged on the outside of the long windshield plate 22, and the long support plates 23 are connected and fixed to the filter chamber 4. The two long support plates 23 are in sliding contact with the two long side plates 25 respectively. The opposite surfaces of the two short support plates 18 and the opposite surfaces of the two long support plates 23 are provided with arc grooves 19, and the arc grooves on the two short support plates 18 Bolts 20 are inserted between the arc grooves 19 and between the arc grooves 19 on the two long support plates 23. One end of the bolt 20 is threadedly connected with a nut 24. The bolts 20 in the arc grooves 19 on the long support plates 23 penetrate the long side plates 25, and the bolts 20 in the arc grooves 19 on the short support plates 18 penetrate the short side plates 26. The inclination angles of the short wind shield plates 21 and the long wind shield plates 22 are adjusted. At this time, the positions of the bolts 20 in the arc grooves 19 change. When the angles of the short wind shield plates 21 and the long wind shield plates 22 meet the needs, the relative positions of the short wind shield plates 21 and the long wind shield plates 22 and the filter chamber 4 can be limited by matching the bolts 20 with the nuts 24, so that the wind direction discharged from the exhaust port changes, and the wind flow angle can be adjusted as needed.

[0019] See also Figure 1-Figure 6An inner cylinder 31 is sleeved on the bolt 20 near its head, and an outer cylinder 29 is sleeved on the inner cylinder 31. A connecting ring 33 is connected and fixed to the end of the outer cylinder 29 near the head of the bolt 20. The connecting ring 33 is connected and fixed to the inner cylinder 31. A piston ring 34 is slidably installed in the space formed by the inner cylinder 31 and the outer cylinder 29. Two guide holes are symmetrically provided on one side of the piston ring 34. A guide rod 36 is inserted in the guide hole. A support ear 37 is connected and fixed to the end of the guide rod 36 away from the connecting ring 33. The support ear 37 is connected and fixed to the outer cylinder 29. The support ear 37 is fixed to the outer cylinder 29. A spring 35 is provided between the piston rings 34, and the spring 35 is sleeved on the guide rod 36. Two connecting rods 32 are symmetrically installed on the side of the piston ring 34 away from the connecting ring 33. The connecting rods 32 and the guide rods 36 are arranged alternately. Two positioning holes are symmetrically provided on one side of the piston ring 34, so that the end of the connecting rod 32 away from the support ring 28 is fixed in the positioning hole to improve the stability of the connection between the connecting rod 32 and the piston ring 34. The end of the connecting rod 32 away from the piston ring 34 extends to the outside of the outer cylinder 29 and is connected and fixed with the support ring 28. The support ring 28 is sleeved on the bolt 2 0, a valve 30 is installed on the outer surface of one end of the outer cylinder 29 close to the connecting ring 33. When installing the bolt 20 and the nut 24, air is first injected into the space formed by the inner cylinder 31 and the outer cylinder 29 by using the inflation device to move the piston ring 34 away from the connecting ring 33. At this time, the piston ring 34 drives the support ring 28 to move away from the outer cylinder 29 through the connecting rod 32. At this time, a gap is formed between the support ring 28 and the outer cylinder 29, so that the bolt 20 passes through the inner cylinder 31 and the support ring 28. Then, when installing the bolt 20, the short support plate 18, There is a structure formed by components such as an outer tube 29 and a support ring 28 between the long support plate 23 and the head of the corresponding bolt 20. When the bolt 20 and the nut 24 are difficult to separate due to the influence of high temperature, the valve mouth 30 is opened, and under the action of the rebound force of the spring 35, the piston ring 34 moves away from the support ring 28, so that there is a gap between the short support plate 18, the long support plate 23 and the head of the corresponding bolt 20, which provides space for cutting off the bolt 20, so that the bolt 20 and the nut 24 that are difficult to separate can be removed without damaging other components.

[0020] See also Figure 1The connecting chamber 2 includes a first rectangular plate 11, two parallel inner walls of the drying chamber 1 are both vertically mounted with first rectangular plates 11 by screws, one end of the first rectangular plate 11 away from the inner wall of the drying chamber 1 is mounted with a second rectangular plate 17 by screws, one end of the second rectangular plate 17 away from the first rectangular plate 11 is mounted with a third rectangular plate 10 by screws, a connecting pipe 15 is mounted between the two second rectangular plates 17 by screws, and the opposite surfaces of the two second rectangular plates 17 are both provided with second vents 16 in the coverage area of ​​the connecting pipe 15, the first rectangular plate 11, the second rectangular plate 17, the third rectangular plate 10 and the inner wall of the drying chamber 1 form a connecting chamber 2, the intermediate chamber 3 includes a fourth rectangular plate 9, the end of the second rectangular plate 17 away from the first rectangular plate 11 is fixed with the fourth rectangular plate 9 by screws, the fourth rectangular plate 9 is arranged perpendicular to the third rectangular plate 10, the end of the fourth rectangular plate 9 away from the third rectangular plate 10 is fixed with the fifth rectangular plate 8 by screws, the fifth rectangular plate 8 is arranged parallel to the third rectangular plate 10, and the end of the fifth rectangular plate 8 away from the fourth rectangular plate 9 is connected and fixed to the inner wall of the drying chamber 1 by screws, The fifth rectangular plate 8, the fourth rectangular plate 9, the third rectangular plate 10 and the inner wall of the drying chamber 1 form an intermediate chamber 3, the air inlet end of the air curtain fan passes through the third rectangular plate 10, and the air outlet end of the air curtain fan passes through the fifth rectangular plate 8. The filter chamber 4 includes a sixth rectangular plate 27, and the end of the fifth rectangular plate 8 away from the inner wall of the drying chamber 1 is fixed with the sixth rectangular plate 27 by screws. The sixth rectangular plate 27 is arranged in parallel with the fourth rectangular plate 9, and the end of the sixth rectangular plate 27 away from the fourth rectangular plate 9 is connected and fixed with the inner wall of the drying chamber 1 by screws. The sixth rectangular plate 27 has a row of The air outlet, the sixth rectangular plate 27, the fifth rectangular plate 8 and the two adjacent inner walls of the drying chamber 1 form a filter chamber 4, the first rectangular plate 11, the second rectangular plate 17, the third rectangular plate 10 and the inner wall of the drying chamber 1 form a connecting chamber 2, the fifth rectangular plate 8, the fourth rectangular plate 9, the third rectangular plate 10 and the inner wall of the drying chamber 1 form an intermediate chamber 3, and the sixth rectangular plate 27, the fifth rectangular plate 8 and the two adjacent inner walls of the drying chamber 1 form a filter chamber 4, realizing a modular design of the connecting chamber 2, the intermediate chamber 3 and the filter chamber 4, which is easy to maintain and can be disassembled.

[0021] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A drying chamber air sealing device, comprising a drying chamber (1), characterized in that: A vertically arranged connecting chamber (2) is installed on two parallel side walls in the drying chamber (1); an intermediate chamber (3) for installing an air curtain fan and connected to the drying chamber (1) is provided on one side of the connecting chamber (2); a filter chamber (4) connected to the drying chamber (1) is provided on the side of the intermediate chamber (3) facing away from the connecting chamber (2); a connecting pipe (15) is installed between the two connecting chambers (2); a first vent (14) is provided on the outer surface of the connecting pipe (15); and a filter chamber (4) connected to the drying chamber (1) is provided on the outer side of the first vent (14). (15) is connected and fixed to an air suction pipe (12), the outer surface of the air suction pipe (12) is provided with an air suction port, the area of ​​the connecting chamber (2) covered by the connecting pipe (15) is provided with a second vent (16), the filter chamber (4) is provided with an exhaust port on a side facing the central area of ​​the drying chamber (1), a filter element is installed on the inner side of the exhaust port, a wind direction adjustment element is installed on the outer side of the exhaust port, and a blocking plate (6) is installed on the top of the drying chamber (1), and the blocking plate (6) is arranged on a side of the drying chamber (1) close to the filter chamber (4).

2. A drying chamber air sealing device according to claim 1, characterized in that: The filter element comprises a filter screen (5), the filter screen (5) is arranged on the inner side of the exhaust port, a cover shell (7) connected to the filter screen (5) by screws is sleeved on the filter screen (5), a rectangular opening is opened in the area of ​​the cover shell (7) covered by the filter screen (5), a side of the cover shell (7) facing the exhaust port is open, and the open end of the cover shell (7) is connected to the filter chamber (4) by a plurality of screws.

3. The drying chamber air sealing device according to claim 1, characterized in that: The wind direction adjustment member comprises a short wind shield (21), the short wind shield (21) being hingedly connected at one edge of the exhaust port, short side plates (26) being connected and fixedly connected at both ends of the short wind shield (21), two short support plates (18) being arranged outside the short wind shield (21), the short support plates (18) being connected and fixedly connected to the filter chamber (4), the two short support plates (18) being respectively in sliding contact with the two short side plates (26), a long wind shield (22) being hingedly connected at one edge of the exhaust port away from the short wind shield (21), long side plates (25) being connected and fixedly connected at both ends of the long wind shield (22), two long support plates (23) being arranged outside the long wind shield (22), the long support plate ( The two long support plates (23) are connected and fixed to the filter chamber (4), the two long support plates (23) are respectively in sliding contact with the two long side plates (25), the opposing surfaces of the two short support plates (18) and the opposing surfaces of the two long support plates (23) are both provided with arc grooves (19), bolts (20) are inserted between the arc grooves (19) on the two short support plates (18) and between the arc grooves (19) on the two long support plates (23), one end of the bolt (20) is threadedly connected with a nut (24), the bolt (20) in the arc groove (19) on the long support plate (23) penetrates the long side plate (25), and the bolt (20) in the arc groove (19) on the short support plate (18) penetrates the short side plate (26).

4. A drying chamber air sealing device according to claim 3, characterized in that: An inner cylinder (31) is sleeved on the bolt (20) near its head, an outer cylinder (29) is sleeved on the inner cylinder (31), a connecting ring (33) is connected and fixed to one end of the outer cylinder (29) near the head of the bolt (20), the connecting ring (33) is connected and fixed to the inner cylinder (31), a piston ring (34) is slidably mounted in a space formed by the inner cylinder (31) and the outer cylinder (29), two guide holes are symmetrically provided on one side of the piston ring (34), a guide rod (36) is inserted in the guide hole, and a support ear (37) is connected and fixed to one end of the guide rod (36) away from the connecting ring (33), the support ear (37) ) is connected and fixed to the outer cylinder (29), a spring (35) is provided between the support ear (37) and the piston ring (34), the spring (35) is sleeved on the guide rod (36), two connecting rods (32) are symmetrically installed on the side of the piston ring (34) away from the connecting ring (33), the connecting rods (32) and the guide rods (36) are arranged alternately, one end of the connecting rod (32) away from the piston ring (34) extends to the outside of the outer cylinder (29) and is connected and fixed with a support ring (28), the support ring (28) is sleeved on the bolt (20), and a valve (30) is installed on the outer surface of one end of the outer cylinder (29) close to the connecting ring (33).

5. A drying chamber air sealing device according to claim 4, characterized in that: Two positioning holes are symmetrically formed on one side of the piston ring (34), and one end of the connecting rod (32) away from the supporting ring (28) is fixed in the positioning hole.

6. A drying chamber air sealing device according to claim 1, characterized in that: The connecting chamber (2) comprises a first rectangular plate (11); two parallel inner walls of the drying chamber (1) are both vertically mounted with first rectangular plates (11) by means of screws; an end of the first rectangular plate (11) away from the inner wall of the drying chamber (1) is mounted with a second rectangular plate (17) by means of screws; an end of the second rectangular plate (17) away from the first rectangular plate (11) is mounted with a third rectangular plate (10) by means of screws; the connecting pipe (15) is mounted between the two second rectangular plates (17) by means of screws; and the two second rectangular plates (17) are mounted with a third rectangular plate (10) by means of screws. 7) The opposite surfaces are provided with a second vent (16) in the area covered by the connecting pipe (15); the first rectangular plate (11), the second rectangular plate (17), the third rectangular plate (10) and an inner wall of the drying chamber (1) form a connecting chamber (2); the intermediate chamber (3) comprises a fourth rectangular plate (9); an end of the second rectangular plate (17) away from the first rectangular plate (11) is fixed with the fourth rectangular plate (9) by screws; the fourth rectangular plate (9) is arranged perpendicular to the third rectangular plate (10); the fourth rectangular plate (9) is away from the third rectangular plate (11) and the connecting chamber (2) is provided with a second vent (16) in the area covered by the connecting pipe (15); the first rectangular plate (11), the second rectangular plate (17), the third rectangular plate (10) and an inner wall of the drying chamber (1) form a connecting chamber (2); the intermediate chamber (3) comprises a fourth rectangular plate (9); an end of the second rectangular plate (17) away from the first rectangular plate (11) is fixed with the fourth rectangular plate (9) by screws; the fourth rectangular plate (9) is arranged perpendicular to the third rectangular plate (10); the fourth rectangular plate (9) is away from the third rectangular plate A fifth rectangular plate (8) is mounted on one end of the plate (10) by means of screws. The fifth rectangular plate (8) is arranged in parallel with the third rectangular plate (10). An end of the fifth rectangular plate (8) away from the fourth rectangular plate (9) is connected and fixed to the inner wall of the drying chamber (1) by means of screws. The fifth rectangular plate (8), the fourth rectangular plate (9), the third rectangular plate (10) and an inner wall of the drying chamber (1) form an intermediate chamber (3). The air inlet end of the air curtain fan passes through the third rectangular plate (10), the air outlet end of the air curtain fan passes through the fifth rectangular plate (8), and the filter chamber (4) comprises a sixth rectangular plate (27), one end of the fifth rectangular plate (8) away from the inner wall of the drying chamber (1) is fixed with the sixth rectangular plate (27) by means of screws, the sixth rectangular plate (27) is arranged in parallel with the fourth rectangular plate (9), one end of the sixth rectangular plate (27) away from the fourth rectangular plate (9) is connected and fixed to the inner wall of the drying chamber (1) by means of screws, one side of the sixth rectangular plate (27) is provided with an exhaust port, and the sixth rectangular plate (27), the fifth rectangular plate (8) and two adjacent inner walls of the drying chamber (1) form a filter chamber (4).

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