A drying device for preparing PTFE membrane

Abstract

The present invention discloses a drying device for preparing PTFE membrane, comprising a first jet roller and a second jet roller, wherein the first jet roller and the second jet roller are provided with a jet mechanism, wherein the jet mechanism comprises a one-way tube, an insertion disk, an insertion rod, a follower rod, a follower ring, a fitting spring, a fitting ring and a sealing mechanism, wherein a plurality of fixing holes and air inlet grooves are staggered and equidistantly provided on the first jet roller and the second jet roller, respectively, a one-way tube is installed in each of the fixing holes, a plurality of insertion rods are installed on the insertion rod, a plurality of air outlet holes are provided in the one-way tube, and the jet mechanism can accurately control the injection of drying hot air to ensure uniform drying of the PTFE membrane, and ensure that the air outlet holes are opened only when the PTFE membrane is contacted through the coordinated work of the one-way tube, the insertion rod, the follower rod and other components, thereby effectively saving energy, and in addition, the design of the fitting ring helps to convert non-vertical thrust into vertical thrust, reduce friction and improve movement efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of cloth PTFE film preparation, and more specifically, to a drying device for preparing PTFE film. Background Art

[0002] In current technology, the process of drying PTFE (polytetrafluoroethylene) membranes generally uses a continuous multi-directional air outlet nozzle. The characteristic of this method is that the nozzle can blow hot air to the PTFE membrane from multiple directions to achieve uniform drying of the membrane material. The design concept of multi-directional injection is to ensure that the hot air can cover every part of the membrane material, thereby ensuring thorough and uniform drying.

[0003] However, this drying method with multi-directional air outlet nozzles has some problems. First, this continuous and multi-directional hot air injection leads to significant energy consumption. Although multi-directional injection helps to achieve uniform drying, this design means that more nozzles need to work at the same time, resulting in higher energy consumption. Especially when the PTFE membrane does not need intensive drying, these nozzles are still working continuously, resulting in unnecessary energy waste.

[0004] Secondly, multi-directional air outlet may lead to uneven distribution of hot air. Although in theory this design can achieve more uniform drying, in actual operation, due to the arrangement of the nozzles and the dynamic distribution of the airflow, some areas of the membrane material may be overheated while other areas are not heated enough. This uneven drying may affect the quality of the PTFE membrane and cause changes in the physical properties of the membrane material (such as thickness and strength). Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the problems existing in the prior art, the present invention provides a drying device for preparing a PTFE membrane to solve the technical problems mentioned in the background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drying device for preparing PTFE membrane, comprising a first air-jet roller and a second air-jet roller, wherein the first air-jet roller and the second air-jet roller are provided with an air-jet mechanism, wherein the air-jet mechanism comprises a one-way tube, an insertion disk, an insertion rod, a follower rod, a follower ring, a fitting spring, a fitting ring and a sealing mechanism, wherein the first air-jet roller and the second air-jet roller are respectively provided with a plurality of fixing holes and air inlet grooves staggered and equidistantly, wherein a one-way tube is installed in each of the fixing holes, a plurality of insertion rods are installed on the insertion rod, and a plurality of outlets are provided in the one-way tube. air hole, multiple insertion rods are slidably connected in the air outlet holes, multiple follower rods are respectively slidably connected in the one-way tubes, follower rings are connected to the multiple follower rods, each of the follower rods is respectively equipped with a fitting spring, the fitting ring is connected to the multiple fitting springs, and the fitting ring is placed on the PTFE film, a hexagonal rod is provided on the insert disk, a follower sleeve is slidably provided in the one-way tube, the follower sleeve is connected to the multiple follower rods, a variable diameter spring is provided on the follower sleeve, and the other end of the variable diameter spring is connected to the hexagonal rod, and the sealing mechanism is installed on the first jet roller and the second jet roller.

[0009] The present invention is further configured such that a hexagonal sleeve is provided in the one-way tube, a return spring is provided on the hexagonal rod, the hexagonal rod is slidably connected to the hexagonal sleeve, and the return spring is connected to the hexagonal sleeve. The design of the return spring ensures that the air outlet is in a closed state when the fitting ring is not in contact with the PTFE membrane.

[0010] The present invention is further configured as follows: the sealing mechanism includes a base plate, a sliding frame, a sliding rail, a slider and a sealing section; the base plate is installed on the external equipment, the sliding rail is installed on the base plate, the sliding frame is slidably connected to the base plate and the sliding rail, the slider is slidably connected to the sliding frame, the sealing section is respectively installed on the first jet roller and the second jet roller, the first jet roller and the second jet roller are respectively rotatably connected to the slider, and the design of the sealing mechanism reduces the leakage of drying hot air.

[0011] The present invention is further configured as follows: a semicircular sleeve is provided on the sealing section, a plurality of sealing plates are provided inside the semicircular sleeve, a plurality of sealing grooves are opened on the sealing section, a plurality of sealing plates are respectively clamped in the sealing grooves, an external tube is sleeved on the outer side of the semicircular sleeve, bolts pass through the external tube and the semicircular sleeve and are threadedly connected to the slider, and the connection between the plurality of sealing plates and the sealing grooves increases the resistance to leakage.

[0012] The present invention is further configured such that a bellows is provided on the external pipe, a receiving shell is provided on the bellows, the receiving shell is connected to the external heating equipment, and the external pipe, the bellows, the receiving shell and the air inlet groove are connected to each other. The design of the bellows ensures the compensation amount of movement.

[0013] The present invention is further configured as follows: an adjustment mechanism is provided on the base plate, and the adjustment mechanism includes a fixed frame, a transverse plate, a screw and an adjustment block. The fixed frame is fixedly mounted on the base plate, a plurality of transverse plates are provided, and the plurality of transverse plates are respectively mounted on the fixed frame and the sliding frame, the screw is threadedly connected to the transverse plate, the adjustment block is mounted on the screw, a limit plate is provided on the sliding frame, a limit ring is provided on the screw, the limit ring is clamped between the two limit plates, a motor is provided on the fixed frame, a lead screw is provided on the protruding end of the motor, and the lead screw is threadedly connected to the sliding frame. The design of the adjustment mechanism ensures the position adjustment of the jet roller.

[0014] The present invention is further configured such that a plurality of slide grooves are provided on the screw rod, a slide bar is slidably provided in the slide groove, a clamping sleeve is provided on the outer side of the slide bar, a clamping column is provided on the transverse plate, the clamping sleeve is clamped on the clamping column, and the design of the clamping sleeve ensures the positioning of the screw rod.

[0015] The present invention is further configured such that a plurality of clamping springs are provided on the adjustment block, the plurality of clamping springs are equidistantly arranged, each of the clamping springs is provided with a retractable rod, a plurality of clamping holes are provided on the clamping sleeve, the clamping springs are clamped in the clamping holes, and the design of the clamping springs ensures the fixation of the clamping sleeve to the upper end of the adjustment block.

[0016] The present invention is further configured such that a plurality of the first air-jet rollers and the second air-jet rollers are respectively provided with synchronous wheels, and the upper and lower synchronous wheels are meshed with each other. The design of the synchronous wheels ensures the continuity of the conveying of the PTFE film.

[0017] The present invention is further configured such that a plurality of the second jet rollers are respectively provided with sprockets, a plurality of the sprockets are respectively meshed with chains, a drive shaft is provided on the second jet roller, the drive shaft is connected to an external drive device, and the design of the sprockets and chains ensures the synchronous rotation of the plurality of second jet rollers.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides a drying device for preparing a PTFE membrane, which has the following

[0020] Beneficial effects:

[0021] 1. The jet mechanism can accurately control the jet of drying hot air to ensure uniform drying of the PTFE membrane. Through the coordinated work of the one-way tube, insertion rod, follower rod and other components, the air outlet is opened only when it contacts the PTFE membrane, thereby effectively saving energy. In addition, the design of the fitting ring helps convert non-vertical thrust into vertical thrust, reduce friction and improve movement efficiency.

[0022] 2. The sealing mechanism ensures the sealing and stable supply of hot air, thereby improving the drying effect and reducing energy loss. The composite design of the sliding frame, sliding rail, slider and multi-layer sealing plate greatly improves the resistance to gas leakage and ensures the continuity and safety of hot air supply. The design of the bellows and receiving shell realizes flexible connection with external heating equipment while maintaining structural stability and ease of operation.

[0023] 3. The adjustment mechanism can accurately adjust the distance between the air-jet rollers to adapt to PTFE films of different thicknesses, thereby optimizing the drying process. Through the coordinated action of the screw, adjustment block, clamping sleeve and other components, the position of the slider and the air-jet roller can be accurately controlled to ensure the uniformity and effect of the drying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a drying device for preparing a PTFE membrane in the present invention;

[0025] Figure 2 It is a side structural schematic diagram of a drying device for preparing a PTFE membrane in the present invention;

[0026] Figure 3 It is a schematic diagram of the explosion structure of the sealing mechanism in the present invention;

[0027] Figure 4 It is a structural schematic diagram of the adjustment mechanism in the present invention;

[0028] Figure 5 It is a schematic diagram of the exploded structure of the clamping sleeve and the clamping spring in the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the first air-jet roller and the second air-jet roller in the present invention;

[0030] Figure 7 is a schematic cross-sectional structural diagram of the first air-jet roller in the present invention;

[0031] Figure 8 It is a schematic cross-sectional structure diagram of the one-way tube in the present invention;

[0032] Fig. 9 It is a schematic diagram of the structure of the laminating spring in the present invention;

[0033] Fig.10 It is a structural schematic diagram of the hexagonal rod in the present invention;

[0034] Fig.11 It is a schematic diagram of the structure of the one-way tube in the present invention.

[0035] In the figure: 1, first jet roller; 2, second jet roller; 3, one-way tube; 4, insert plate; 5, insert rod; 6, follower rod; 7, follower ring; 8, fitting spring; 9, fitting ring; 10, fixing hole; 11, air inlet groove; 12, air outlet hole; 13, hexagonal rod; 14, follower sleeve; 15, variable spring; 16, hexagonal sleeve; 17, return spring; 18, bottom plate; 19, sliding frame; 20, slide rail; 21, slider; 22, sealing section; 23, semicircular sleeve; 24 , sealing plate; 25, sealing groove; 26, external tube; 27, bellows; 28, receiving shell; 29, fixing frame; 30, transverse plate; 31, screw; 32, adjusting block; 33, limit plate; 34, limit ring; 35, motor; 36, lead screw; 37, slide groove; 38, slide bar; 39, snap sleeve; 40, snap column; 41, snap spring; 42, retracting rod; 43, snap hole; 44, synchronous wheel; 45, sprocket; 46, drive shaft; 47, chain. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0038] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0039] See also Figures 6 to 11A drying device for preparing a PTFE film comprises a first air-jet roller 1 and a second air-jet roller 2. The first air-jet roller 1 and the second air-jet roller 2 are provided with an air-jet mechanism, which comprises a one-way tube 3, an insertion disk 4, an insertion rod 5, a follower rod 6, a follower ring 7, a fitting spring 8, a fitting ring 9 and a sealing mechanism. The first air-jet roller 1 and the second air-jet roller 2 are respectively provided with a plurality of fixing holes 10 and an air inlet groove 11 staggered and equidistantly arranged. A one-way tube 3 is installed in each fixing hole 10. A plurality of insertion rods 5 are installed on the insertion rod 5. A plurality of air outlet holes 12 are arranged in the one-way tube 3. A plurality of insertion rods 5 are slidably connected in the air outlet holes 12. A plurality of follower rods 6 are respectively slidably connected in the one-way tube 3. The follower ring 7 is connected to multiple follower rods 6, each follower rod 6 is respectively installed with a fitting spring 8, the fitting ring 9 is connected to multiple fitting springs 8, and the fitting ring 9 is pressed against the PTFE membrane, a hexagonal rod 13 is provided on the insertion disk 4, a follower sleeve 14 is slidably provided in the one-way tube 3, the follower sleeve 14 is connected to multiple follower rods 6, a variable spring 15 is provided on the follower sleeve 14, and the other end of the variable spring 15 is connected to the hexagonal rod 13, a sealing mechanism is installed on the first jet roller 1 and the second jet roller 2, a hexagonal sleeve 16 is provided in the one-way tube 3, a return spring 17 is provided on the hexagonal rod 13, the hexagonal rod 13 is slidably connected to the hexagonal sleeve 16, and the return spring 17 is connected to the hexagonal sleeve 16.

[0040] Working principle: The PTFE film is transported between the first jet roller 1 and the second jet roller 2, and then the rotation of the first jet roller 1 and the second jet roller 2 drives the movement of the PTFE film. Since the fixing holes 10 on the first jet roller 1 and the second jet roller 2 are staggered, the multiple one-way tubes 3 are also staggered. When the corresponding fitting ring 9 rotates and presses on the PTFE film, the thrust is applied by the fitting spring 8 and then transmitted to the follower rod 6. The follower rod 6 moves, and at the same time, the hexagonal rod 13 is driven by the variable diameter spring 15 to overcome the elastic force of the return spring 17, so that the multiple insertion rods 5 on the insertion plate 4 are unsealed from the air outlet 12, and then the drying hot air is blown onto the PTFE film, thereby In the process of drying the PTFE membrane, the air outlet 12 will only open when it contacts the PTFE membrane, so energy can be effectively saved, and the thrust that is not perpendicular to the follower rod 6 can be converted into a thrust perpendicular to the follower rod 6 under the action of the fitting spring 8, so the problem of excessive friction and inability to move during contact can be avoided, and the limiting action of the hexagonal rod 13 and the hexagonal sleeve 16 can accurately ensure that the insertion rod 5 can be accurately inserted into the air outlet 12 each time the insertion rod 5 moves up and down, and since the fixing holes 10 of the upper and lower jet rollers are staggered, the corresponding interval positions of the two can be dried, thereby ensuring the drying effect.

[0041] See also Figures 1 to 3The sealing mechanism includes a bottom plate 18, a sliding frame 19, a sliding rail 20, a slider 21 and a sealing section 22. The bottom plate 18 is installed on the external equipment, the sliding rail 20 is installed on the bottom plate 18, the sliding frame 19 is slidably connected to the bottom plate 18 and the sliding rail 20, the slider 21 is slidably connected to the sliding frame 19, and the sealing section 22 is respectively installed on the first jet roller 1 and the second jet roller 2. A semicircular sleeve 23 is provided on the sealing section 22, and a plurality of sealing plates 24 are provided in the semicircular sleeve 23. A plurality of sealing grooves 25 are opened on the sealing section 22, and a plurality of sealing plates 24 are respectively clamped in the sealing grooves 25. An external pipe 26 is sleeved on the outer side of the semicircular sleeve 23, and a bolt passes through the external pipe 26 and the semicircular sleeve 23 and is threadedly connected to the slider 21. A bellows 27 is provided on the external pipe 26, and a receiving shell 28 is provided on the bellows 27. The receiving shell 28 is connected to the external heating equipment, and the external pipe 26, the bellows 27, the receiving shell 28 and the air inlet groove 11 are connected to each other.

[0042] Working principle: When drying hot air is passed through the first jet roller 1 and the second jet roller 2, since both are in a rotating state, the external pipeline cannot be connected to each other. First, the two semicircular sleeves 23 are respectively sleeved on the sealing section 22, and then multiple sealing plates 24 are respectively inserted into the sealing groove 25, and then the external pipe 26 is sleeved on the two semicircular sleeves 23, and the external pipe 26 and the semicircular sleeves 23 are fixed to the slider 21 by bolts. Since multiple sealing plates 24 are provided to separate them, gas leakage needs to pass through multiple layers of sealing plates 24 to leak, thereby greatly increasing the resistance to leakage and ensuring the effect of use. The external pipe 26 and the receiving shell 28 are connected by a bellows 27, and the receiving shell 28 is fixedly installed on the external equipment. The movement can be compensated by the bellows 27, thereby ensuring the convenience of installation.

[0043] See also Figure 4 and Figure 5The bottom plate 18 is provided with an adjustment mechanism, which includes a fixed frame 29, a transverse plate 30, a screw 31 and an adjustment block 32. The fixed frame 29 is fixedly mounted on the bottom plate 18. A plurality of transverse plates 30 are provided, and the plurality of transverse plates 30 are respectively mounted on the fixed frame 29 and the sliding frame 19. The screw 31 is threadedly connected to the transverse plate 30. The adjustment block 32 is mounted on the screw 31. A limit plate 33 is provided on the slider 21. A limit ring 34 is provided on the screw 31. The limit ring 34 is stuck between the two limit plates 33. A motor 35 is provided on the fixed frame 29. A lead screw 36 is provided on the protruding end of the motor 35. The lead screw 36 is threadedly connected to the sliding frame 19. A plurality of slide grooves 37 are provided on the screw 31. The slide grooves 37 slide inwardly. A slide bar 38 is provided, and a clamping sleeve 39 is provided on the outer side of the slide bar 38. A clamping column 40 is provided on the transverse plate 30, and the clamping sleeve 39 is clamped on the clamping column 40. A plurality of clamping springs 41 are provided on the adjusting block 32, and the plurality of clamping springs 41 are arranged equidistantly, and each clamping spring 41 is provided with a contraction rod 42, and a plurality of clamping holes 43 are opened on the clamping sleeve 39, and the clamping spring 41 is clamped in the clamping hole 43. Synchronous wheels 44 are respectively provided on the plurality of first jet rollers 1 and the second jet roller 2, and the upper and lower synchronous wheels 44 are meshed with each other. Sprocket wheels 45 are respectively provided on the plurality of second jet rollers 2, and chains 47 are respectively meshed on the plurality of sprocket wheels 45. A driving shaft 46 is provided on the second jet roller 2, and the driving shaft 46 is connected to an external driving device.

[0044] Working principle: When the distance between the two jet rollers needs to be adjusted according to different PTFE membranes, first insert the clamping hole 43 on the clamping sleeve 39 into the clamping hole 43. Since the diameter of the clamping spring 41 is slightly larger than the diameter of the clamping hole 43, the clamping sleeve 39 and the clamping spring 41 will be fixed after insertion. Then, the adjusting block 32 is driven to rotate by the wrench. Since the screw rod 31 is threadedly connected to the transverse plate 30, the distance between them can be adjusted, and the limiting ring 34 is clamped on the two limiting plates 33. The limiting plates 3 3 is installed on the slider 21, so the up and down movement of the screw rod 31 will drive the up and down movement of the slider 21. Since the first air-jet roller 1 is rotatably connected to the slider 21, it can move accordingly, thereby adjusting the distance between the first air-jet roller 1 and the second air-jet roller 2. The sliders 21 on both sides are adjusted at the same time, and then the clamping sleeve 39 is pulled out from the clamping spring 41, so that the clamping sleeve 39 is clamped on the clamping column 40, so that the screw rod 31 can be limited, thereby ensuring the stability of its position, thereby improving the quality and uniformity of drying.

[0045] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A drying device for preparing a PTFE film, comprising a first air-jet roller (1) and a second air-jet roller (2), wherein: The first jet roller (1) and the second jet roller (2) are provided with a jet mechanism, the jet mechanism comprising a one-way tube (3), an insertion disk (4), an insertion rod (5), a follower rod (6), a follower ring (7), a fitting spring (8), a fitting ring (9) and a sealing mechanism. The first jet roller (1) and the second jet roller (2) are respectively provided with a plurality of fixing holes (10) and air inlet grooves (11) staggered and equidistantly arranged. A one-way tube (3) is installed in each of the fixing holes (10). A plurality of insertion rods (5) are mounted on the rod (5), a plurality of air outlet holes (12) are opened in the one-way tube (3), the plurality of insertion rods (5) are slidably connected in the air outlet holes (12), the plurality of follower rods (6) are respectively slidably connected in the one-way tube (3), the follower ring (7) is connected to the plurality of follower rods (6), each of the follower rods (6) is respectively mounted with a fitting spring (8), a fitting ring (9) is connected to the plurality of fitting springs (8), and the fitting ring (9) is pressed against the PT The FE film is provided on the insert disk (4), a hexagonal rod (13) is provided on the one-way tube (3), a follower sleeve (14) is slidably provided in the one-way tube (3), the follower sleeve (14) is connected to the plurality of follower rods (6), a variable diameter spring (15) is provided on the follower sleeve (14), the other end of the variable diameter spring (15) is connected to the hexagonal rod (13), the sealing mechanism is installed on the first jet roller (1) and the second jet roller (2), and the sealing mechanism includes a bottom plate (18), a sliding frame (19), a slide rail (2 0), a slider (21) and a sealing section (22), the base plate (18) is mounted on external equipment, the slide rail (20) is mounted on the base plate (18), the sliding frame (19) is slidably connected to the base plate (18) and the slide rail (20), the slider (21) is slidably connected to the sliding frame (19), the sealing section (22) is respectively mounted on the first jet roller (1) and the second jet roller (2), and the first jet roller (1) and the second jet roller (2) are respectively rotatably connected to the slider (21).

2. A drying device for preparing a PTFE membrane according to claim 1, characterized in that: A hexagonal sleeve (16) is arranged inside the one-way tube (3), a return spring (17) is arranged on the hexagonal rod (13), the hexagonal rod (13) is slidably connected to the hexagonal sleeve (16), and the return spring (17) is connected to the hexagonal sleeve (16).

3. A drying device for preparing a PTFE membrane according to claim 2, characterized in that: The sealing section (22) is provided with a semicircular sleeve (23), a plurality of sealing plates (24) are provided inside the semicircular sleeve (23), a plurality of sealing grooves (25) are provided on the sealing section (22), the plurality of sealing plates (24) are respectively clamped in the sealing grooves (25), an external pipe (26) is sleeved on the outer side of the semicircular sleeve (23), and a bolt passes through the external pipe (26) and the semicircular sleeve (23) and is threadedly connected to the slider (21).

4. A drying device for preparing a PTFE membrane according to claim 3, characterized in that: The external pipe (26) is provided with a bellows (27), the bellows (27) is provided with a receiving shell (28), the receiving shell (28) is connected to an external heating device, and the external pipe (26), the bellows (27), the receiving shell (28) and the air inlet groove (11) are connected to each other.

5. A drying device for preparing a PTFE membrane according to claim 4, characterized in that: The bottom plate (18) is provided with an adjustment mechanism, which comprises a fixed frame (29), a transverse plate (30), a screw (31) and an adjustment block (32). The fixed frame (29) is fixedly mounted on the bottom plate (18). A plurality of transverse plates (30) are provided, and the plurality of transverse plates (30) are respectively mounted on the fixed frame (29) and the sliding frame (19). The screw (31) is threadedly connected to the transverse plate (30). The adjustment block (32) is mounted on the screw (31). A limit plate (33) is provided on the sliding frame (21). A limit ring (34) is provided on the screw (31). The limit ring (34) is clamped between the two limit plates (33). The fixed frame (29) is provided with a motor (35). A lead screw (36) is provided on the protruding end of the motor (35). The lead screw (36) is threadedly connected to the sliding frame (19).

6. A drying device for preparing a PTFE membrane according to claim 5, characterized in that: The screw rod (31) is provided with a plurality of slide grooves (37), a slide bar (38) is slidably provided in the slide groove (37), a clamping sleeve (39) is provided on the outer side of the slide bar (38), a clamping column (40) is provided on the transverse plate (30), and the clamping sleeve (39) is clamped on the clamping column (40).

7. A drying device for preparing a PTFE membrane according to claim 6, characterized in that: The adjusting block (32) is provided with a plurality of clamping springs (41), the plurality of clamping springs (41) are arranged at equal intervals, each of the clamping springs (41) is provided with a retractable rod (42), the clamping sleeve (39) is provided with a plurality of clamping holes (43), and the clamping springs (41) are clamped in the clamping holes (43).

8. A drying device for preparing a PTFE membrane according to claim 7, characterized in that: A plurality of the first air-jet rollers (1) and the second air-jet rollers (2) are respectively provided with synchronous wheels (44), and the upper and lower synchronous wheels (44) are meshed with each other.

9. A drying device for preparing a PTFE membrane according to claim 8, characterized in that: A plurality of the second jet rollers (2) are respectively provided with sprockets (45), and a chain is respectively meshed on the plurality of sprockets (45). A drive shaft (46) is provided on the second jet roller (2), and the drive shaft (46) is connected to an external drive device.

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