A high-temperature-resistant teflon tape production drying treatment system

Abstract

The present application relates to drying technical field, specifically to a kind of drying treatment system for high-temperature-resistant Teflon adhesive tape production, including drying bin and the heat preservation and dehumidification module being connected and arranged above drying bin, the gas humidity in drying bin can be reduced when the heat preservation and dehumidification module works;Right-angle elbow and exhaust control pipe are installed on the side wall of the drying bin, fan unit, airflow heating bin and drying air jet plate are arranged in the drying bin;The present application is switched to outer circulation mode under the condition such as high temperature, dryness of summer air, reduce maintenance cost;And when air temperature is low in winter or air humidity is higher in plum rain season, it can be switched to inner circulation mode, reduce heat loss.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drying, in particular to a drying treatment system for high-temperature-resistant Teflon tape production. BACKGROUND

[0002] The production of high-temperature-resistant Teflon tape is based on glass fiber cloth as a substrate, which is immersed in PTFE (polytetrafluoroethylene) emulsion, then subjected to drying treatment, and finally sintered to melt PTFE particles into a film, which is tightly combined with the glass fiber cloth to form a high-temperature-resistant coating. The Teflon tape semi-finished product, which is the product after the glass fiber cloth is immersed in PTFE emulsion, is subjected to drying treatment to slowly remove volatile solvents such as deionized water and ethanol in the PTFE emulsion, thereby avoiding defects such as air bubbles and pinholes in the next sintering process. Most of the drying systems used in the current enterprise background use the principle of extracting gas from the external environment, heating it, and then sending it into the oven for drying treatment of the product after the glass fiber cloth is immersed in PTFE emulsion. The high-humidity gas is directly discharged to the outside. This method is greatly affected by the external environment. When it is winter or the plum rain season, the temperature of the gas extracted from the external environment is too low or the humidity is too high, which will greatly increase the power consumption of the equipment and affect the drying efficiency. SUMMARY

[0003] The present application relates to the technical field of drying, in particular to a drying treatment system for high-temperature-resistant Teflon tape production.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a drying treatment system for high-temperature-resistant Teflon tape production, comprising a drying bin and a heat preservation and dehumidification module connected above the drying bin, the heat preservation and dehumidification module can reduce the humidity of the gas in the drying bin when working; a straight elbow and an exhaust control pipe are installed on the side wall of the drying bin, a fan unit, an airflow heating bin and a drying air jet plate are arranged inside the drying bin, the fan unit extracts gas through the straight elbow, inputs the gas into the airflow heating bin for heating, and finally sprays it out through the drying air jet plate to dry the Teflon tape semi-finished product; a switching control assembly is arranged between the straight elbow and the exhaust control pipe, and an internal circulation air window is formed through the surface of the straight elbow; in the internal circulation mode, the switching control assembly makes the gas in the drying bin enter the fan unit through the internal circulation air window, the exhaust control pipe is closed, and the heat preservation and dehumidification module operates; in the external circulation mode, the switching control assembly makes the external air enter the fan unit through the straight elbow, the internal circulation air window and the exhaust control pipe are closed, and the heat preservation and dehumidification module stops operating.

[0005] The switching control assembly comprises a lifting plug sleeve and a synchronous optical shaft, the lifting plug sleeve is arranged in the interior of the elbow pipe, and the lifting plug sleeve is in sealing contact with the inner wall surface of the elbow pipe; when the lifting plug sleeve is lowered to a position, the internal circulation air window can be closed, and the elbow pipe is in a communication state; when the lifting plug sleeve is raised to a position, the internal circulation air window is opened, and the elbow pipe is closed; the synchronous optical shaft is fixedly arranged on the lifting plug sleeve, and the synchronous optical shaft is used for controlling the movement of the lifting plug sleeve.

[0006] An air cylinder barrel is fixedly arranged on the outer surface of the elbow pipe, the synchronous optical shaft penetrates through the top wall of the elbow pipe and the interior of the air cylinder barrel, and the synchronous optical shaft is in sealing contact with the top wall of the elbow pipe; a piston part is fixedly arranged on the outer part of the synchronous optical shaft, the piston part is in sealing contact with the inner wall surface of the air cylinder barrel, a control air pipe is arranged in communication on the outer part of the air cylinder barrel, and the control air pipe is used for driving the piston part by inputting positive and negative pressure gas, so as to drive the synchronous optical shaft to move axially.

[0007] A closing gate is fixedly arranged on the end part of the synchronous optical shaft, and a gate sliding groove is arranged in the interior of the exhaust control pipe; when the lifting plug sleeve is raised to a position, the synchronous optical shaft synchronously drives the closing gate to move upwards, so that the closing gate is inserted into the gate sliding groove to close the exhaust control pipe.

[0008] A gas filtering layer is arranged in the interior of the elbow pipe, and the gas filtering layer can filter gas when the gas enters the fan unit through the elbow pipe.

[0009] An external communication part is arranged in communication on the inner wall of the elbow pipe, and a coaxial pipe is arranged in communication on the external communication part; the coaxial pipe is in a circular tubular structure, and the two ends are open; one end of the coaxial pipe is in communication with the external atmosphere through the external communication part, and the other end is in communication with the inner cavity of the elbow pipe.

[0010] A pipe wall resistance ring is fixedly arranged on the inner wall of the coaxial pipe, a friction dragging plug and a pressure sensing piston are sequentially arranged on the side of the pipe wall resistance ring away from the external communication part; the friction dragging plug is in frictional contact with the inner wall surface of the coaxial pipe, and the pressure sensing piston is in sealing contact with the inner wall surface of the coaxial pipe.

[0011] A center column table is fixedly arranged at the center position of the friction dragging plug, a column table blind hole is arranged in the center column table, a lock block through groove is arranged in the side wall of the column table blind hole in a penetrating manner, a movable lock block is arranged in the lock block through groove, a supporting spring sheet is arranged on the outer part of the movable lock block, and the supporting spring sheet provides a supporting elastic force for the movable lock block, so that the movable lock block has a tendency to move outwardly.

[0012] One side of the pressure sensing piston is fixedly provided with a converging pull cover, when the distance between the pressure sensing piston and the friction drag plug increases, the converging pull cover is in extrusion contact with the movable lock block, and the movable lock block is driven to move to the position of the axis of the friction drag plug.

[0013] A variable-distance impact shaft is inserted in the column blind hole, and a locking ring groove is formed in the surface of the variable-distance impact shaft, when the movable lock block moves to the position of the axis of the friction drag plug, the movable lock block is clamped into the locking ring groove, so that the variable-distance impact shaft is axially locked with the center column, and when the friction drag plug moves axially, the variable-distance impact shaft can be driven to move axially.

[0014] The side, away from the friction drag plug, of the pressure sensing piston is provided with a pressure balance spring, the end of the coaxial pipe is fixedly provided with a sensor support, and a distance measuring sensor is installed on the sensor support, and the distance measuring sensor is used to detect the position of the pressure sensing piston.

[0015] One end of the variable-distance impact shaft is sealed and inserted through the side wall of the external communication part and corresponds to the air filtering layer, a skirt is fixedly arranged on the variable-distance impact shaft, and a retaining spring is arranged between the skirt and the side wall of the external communication part.

[0016] Compared with the prior art, the beneficial effects of the present application are:

[0017] 1、The drying treatment system for Teflon tape production can switch to the external circulation mode under the conditions of high temperature and dryness of air in summer, so that the fan unit directly heats the gas in the external environment and then dries the Teflon tape, at this time, the heat preservation and dehumidification module stops working, the equipment is more stable during long-term use, and the maintenance cost is reduced; when the air temperature is low in winter or the air humidity is relatively high in plum rain season, the system can switch to the internal circulation mode, at this time, the fan unit circulates the gas in the drying bin, reduces heat loss, and the heat preservation and dehumidification module operates, so that the gas humidity in the drying bin can be controlled, and the drying efficiency is ensured; the system adjusts the working mode adaptively in combination with changes in the external environment, and is more energy-saving and efficient.

[0018] 2、The coaxial pipe, the friction drag plug, the pressure sensing piston and the variable-distance impact shaft are matched to monitor and detect the blockage of the air filtering layer in the external circulation mode, and according to the severity of the blockage, the variable-distance impact shaft can be used to apply different impact forces to the air filtering layer for shock cleaning after the equipment is stopped. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic view of the overall structure of the present application.

[0020] Figure 2 It is a three-dimensional half-section display view of the present application.

[0021] Figure 3 This is a three-dimensional half-section view of the heat preservation and dehumidification module of the present invention.

[0022] Figure 4 This is a three-dimensional half-sectional view of the exhaust control pipe of the present invention.

[0023] Figure 5 This is a three-dimensional half-section view of the right-angle bend of the present invention.

[0024] Figure 6 This is a three-dimensional half-sectional view of the coaxial tube of the present invention.

[0025] Figure 7 This is a three-dimensional half-section view of the friction drag plug of the present invention.

[0026] Figure 8 This is a three-dimensional half-section view of the present invention from a side perspective.

[0027] In the diagram: 1. Drying chamber; 2. Insulation and dehumidification module; 3. Right-angle bend; 4. Exhaust control pipe; 5. Fan unit; 6. Airflow heating chamber; 7. Drying jet plate; 8. Internal circulation air vent; 801. Lifting plug; 802. Synchronous optical axis; 803. Cylinder; 804. Piston section; 805. Control air pipe; 806. Sealing gate; 807. Gate slide groove; 9. Filter layer; 301. External connection section; 302. Coaxial tube; 303. Tube wall retaining ring; 304. Friction drag plug; 305. Pressure-sensing piston; 306. Central column; 307. Column blind hole; 308. Locking block through slot; 309. Movable locking block; 310 311. Support spring; 312. Gathering pull cover; 313. Variable pitch impact shaft; 314. Locking ring groove; 315. Pressure balance spring; 316. Sensor bracket; 317. Distance sensor; 318. Skirt plate; 319. Holding spring; 101. Conveyor roller shaft; 201. Support perforated plate; 202. Central return pipe; 203. Axial flow fan; 204. Moisture absorption ring; 205. Inner wall rotating ring; 206. Gear ring section; 207. Drive gear; 208. Power module; 209. Regeneration upper cover; 210. Regeneration lower cover; 211. Heating air inlet pipe; 212. Exhaust pipe; 501. Isolation plate; 601. Electric heating tube. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1 to 8The application provides a technical scheme: a drying treatment system for high-temperature-resistant Teflon tape production, which comprises a drying bin 1 and a heat preservation and dehumidification module 2.

[0030] As shown in Figure 2 The inner wall of the drying bin 1 is provided with a plurality of groups of conveying rollers 101 which are rotatably installed, the conveying rollers 101 are driven by belt pulleys and can rotate actively, and the Teflon tape semi-finished product is supported and conveyed by the conveying rollers 101, as shown in Figure 2 The Teflon tape semi-finished product after the glass fiber cloth is immersed in the PTFE emulsion is folded back and forth in an arch shape.

[0031] The heat preservation and dehumidification module 2 can reduce the humidity of the gas in the drying bin 1 when working, and the specific structure of the heat preservation and dehumidification module 2 comprises a support hole plate 201 and a center return pipe 202, as shown in Figure 3 The support hole plate 201 and the center return pipe 202 are welded and fixed, the center return pipe 202 is located at the center position of the support hole plate 201, the surface of the support hole plate 201 is provided with ventilation round holes, the center return pipe 202 is in the shape of a cylindrical pipe, an axial flow fan 203 is installed in the center return pipe 202, and the specific structure of the axial flow fan 203 is not shown and is a traditional axial flow fan device.

[0032] A moisture absorption ring 204 is arranged outside the center return pipe 202, when the axial flow fan 203 works, the airflow in the center return pipe 202 can be driven to flow from top to bottom, so that the upper part of the moisture absorption ring 204 is in a negative pressure state; at this time, the flow path of the gas is that the high-humidity gas in the drying bin 1 flows to the moisture absorption ring 204 through the ventilation round holes on the surface of the support hole plate 201, flows from the lower part of the moisture absorption ring 204, passes through the moisture absorption ring 204 and flows out from the upper part of the moisture absorption ring 204, and finally returns to the drying bin 1 through the center return pipe 202.

[0033] As shown in Figure 3 The inner ring surface of the moisture absorption ring 204 is coaxially and fixedly provided with an inner wall rotating ring 205, and the inner side surface of the inner wall rotating ring 205 is provided with a gear ring part 206; a driving gear 207 is arranged in the center return pipe 202, the driving gear 207 is engaged with the gear ring part 206 through a slot in the sidewall of the center return pipe 202, so that when the driving gear 207 rotates, the moisture absorption ring 204 can be driven to rotate through the engagement with the gear ring part 206.

[0034] A power module 208 is also embedded and installed on the sidewall of the center return pipe 202, the power module 208 comprises a motor and a speed reduction gear set, and the driving gear 207 can be driven to rotate at low speed and high torque by the power module 208.

[0035] As shown in Figure 3As shown in the figure, the upper part of the moisture absorption ring 204 is provided with a regeneration upper cover 209, and the lower part of the moisture absorption ring 204 is provided with a regeneration lower cover 210, the regeneration upper cover 209 and the regeneration lower cover 210 are in airtight contact with the moisture absorption ring 204, and the regeneration upper cover 209 and the regeneration lower cover 210 correspond to each other, the moisture absorption ring 204 of the present application is made of ceramic fiber and moisture absorption silica gel, the ceramic fiber is used as a carrier material, the moisture absorption silica gel has high active adsorption, stable chemical properties, and can be regenerated, and the moisture absorption ring 204 is provided with uniformly distributed through holes parallel to the axis direction, so that the gas passing through the moisture absorption ring 204 can only flow parallel to the axis direction of the moisture absorption ring 204. The regeneration upper cover 209 is provided with a heating air inlet pipe 211, and the regeneration lower cover 210 is provided with a moisture discharge pipe 212, the high-temperature gas of about 130 degrees is input through the heating air inlet pipe 211, so that the high-temperature gas passes through the regeneration upper cover 209, passes through the moisture absorption ring 204, and gathers in the regeneration lower cover 210, and is discharged through the moisture discharge pipe 212, so that the moisture absorption ring 204 is regenerated, and the moisture in the moisture absorption ring 204 is discharged.

[0036] The side wall of the drying bin 1 is provided with a right-angle bend pipe 3 and an exhaust control pipe 4, the inside of the drying bin 1 is provided with a fan unit 5, an air flow heating bin 6 and a drying air jet plate 7, the fan unit 5 draws gas through the right-angle bend pipe 3, the gas is input into the air flow heating bin 6 for heating in a positive pressure mode, and finally is sprayed out through the drying air jet plate 7, so as to dry the Teflon adhesive tape semi-finished product. Figure 2 As shown in the figure, the inside of the drying bin 1 is fixedly provided with a separation layer plate 501, the fan unit 5 and the air inlet of the fan unit 5 are below the separation layer plate 501, and the air outlet of the fan unit 5 communicates with the air flow heating bin 6 through the separation layer plate 501, so that when the fan unit 5 works, the air below the separation layer plate 501 is in a negative pressure state of air suction, and the right-angle bend pipe 3 of the present application directly communicates with the air below the separation layer plate 501, so as to indirectly realize the communication with the air inlet of the fan unit 5.

[0037] As shown in the figure, the inside of the drying bin 1 is fixedly provided with a separation layer plate 501, the fan unit 5 and the air inlet of the fan unit 5 are below the separation layer plate 501, and the air outlet of the fan unit 5 communicates with the air flow heating bin 6 through the separation layer plate 501, so that when the fan unit 5 works, the air below the separation layer plate 501 is in a negative pressure state of air suction, and the right-angle bend pipe 3 of the present application directly communicates with the air below the separation layer plate 501, so as to indirectly realize the communication with the air inlet of the fan unit 5. Figure 2 As shown in the figure, the inside of the air flow heating bin 6 is provided with an electric heating pipe 601, which can heat the passing gas after being electrified.

[0038] The right-angle bend pipe 3 and the exhaust control pipe 4 are provided with a switching control assembly, and the surface of the right-angle bend pipe 3 is provided with an internal circulation air window 8; in the internal circulation mode, the switching control assembly makes the gas in the drying bin 1 enter the fan unit 5 through the internal circulation air window 8, and the exhaust control pipe 4 is closed, and the heat preservation and dehumidification module 2 works; in the external circulation mode, the switching control assembly makes the external air enter the fan unit 5 through the right-angle bend pipe 3, the internal circulation air window 8 and the exhaust control pipe 4 are closed, and the heat preservation and dehumidification module 2 stops working.

[0039] The switching control assembly comprises a lifting plug sleeve 801 and a synchronous light shaft 802, the lifting plug sleeve 801 is arranged in the interior of the elbow pipe 3, and the lifting plug sleeve 801 is in sealing contact with the inner wall surface of the elbow pipe 3; when the lifting plug sleeve 801 is lowered to the position, the internal circulation air window 8 can be closed, and the elbow pipe 3 is in a communication state; when the lifting plug sleeve 801 is raised to the position, the internal circulation air window 8 is opened, and the elbow pipe 3 is closed; the synchronous light shaft 802 is fixedly arranged on the lifting plug sleeve 801, and the lifting plug sleeve 801 is controlled to move through the synchronous light shaft 802.

[0040] The outer surface of the elbow pipe 3 is fixedly provided with a cylinder barrel 803, the synchronous light shaft 802 penetrates through the top wall of the elbow pipe 3 and the interior of the cylinder barrel 803, and the synchronous light shaft 802 is in sealing contact with the top wall of the elbow pipe 3; the outer portion of the synchronous light shaft 802 is fixedly provided with a piston part 804, the piston part 804 is in sealing contact with the inner wall surface of the cylinder barrel 803, the outer portion of the cylinder barrel 803 is in communication with a control gas pipe 805, the control gas pipe 805 drives the piston part 804 through input of positive and negative pressure gas, and then drives the synchronous light shaft 802 to move axially.

[0041] The end portion of the synchronous light shaft 802 is fixedly provided with a closing gate plate 806, and the interior of the exhaust control pipe 4 is provided with a gate plate sliding groove 807; when the lifting plug sleeve 801 is raised to the position, the synchronous light shaft 802 synchronously drives the closing gate plate 806 to move upwards, so that the closing gate plate 806 is inserted into the gate plate sliding groove 807 to close the exhaust control pipe 4.

[0042] The interior of the elbow pipe 3 is provided with a gas filtering layer 9, the gas filtering layer 9 is composed of filter cotton and an outer supporting frame, when external gas enters the fan unit 5 through the elbow pipe 3, the gas filtering layer 9 can filter the gas, the arrangement position of the gas filtering layer 9 is shown in the drawing, and the communication of the external pipeline of the elbow pipe 3 is convenient to disassemble and replace and clean. Figure 5

[0043] The inner wall of the elbow pipe 3 is in communication with an external communication part 301, and the external communication part 301 is in communication with a coaxial pipe 302; the coaxial pipe 302 is in a circular pipe structure, and the two ends are open, one end of the coaxial pipe 302 is in communication with the external atmosphere through the external communication part 301, and the other end is in communication with the inner cavity of the elbow pipe 3.

[0044] The inner wall of the coaxial pipe 302 is fixedly provided with a pipe wall blocking ring 303, one side of the pipe wall blocking ring 303 away from the external communication part 301 is sequentially provided with a friction dragging plug 304 and a pressure sensing piston 305; the friction dragging plug 304 is in frictional contact with the inner wall surface of the coaxial pipe 302, and the pressure sensing piston 305 is in sealing contact with the inner wall surface of the coaxial pipe 302.

[0045] ​The center position of the friction drag plug 304 is fixedly provided with a center column table 306, the center column table 306 is provided with a column table blind hole 307, the side wall of the column table blind hole 307 is provided with a lock block through groove 308, the lock block through groove 308 is provided with a movable lock block 309, the outer side of the movable lock block 309 is provided with a supporting spring 310, the supporting spring 310 provides a supporting elastic force for the movable lock block 309, so that the movable lock block 309 has a tendency to expand and move outward.

[0046] One side of the pressure sensing piston 305 is fixedly provided with a gathering pull cover 311, when the distance between the pressure sensing piston 305 and the friction drag plug 304 increases, the gathering pull cover 311 is in extrusion contact with the movable lock block 309, and the movable lock block 309 is driven to move inwards along the axis of the friction drag plug 304.

[0047] The column table blind hole 307 is inserted with a variable distance impact shaft 312, the surface of the variable distance impact shaft 312 is provided with a locking ring groove 313, when the movable lock block 309 moves inwards along the axis of the friction drag plug 304, the movable lock block 309 is clamped into the locking ring groove 313, so that the variable distance impact shaft 312 is axially locked with the center column table 306, thereby when the friction drag plug 304 moves axially, the variable distance impact shaft 312 can be driven to move axially; the specific structure of the movable lock block 309 is shown in Figure 7 The outer side of the movable lock block 309 is provided with an inclined surface, which can be in extrusion contact with the gathering pull cover 311 to push the movable lock block 309 to move inwards, and the outer side of the movable lock block 309 is provided with a vertical part at one end position, which can limit the gathering pull cover 311 when the gathering pull cover 311 is in contact with the vertical part; the inner side of the movable lock block 309 is provided with a triangular protrusion, when the movable lock block 309 moves inwards, the triangular protrusion is clamped into the locking ring groove 313 to lock the variable distance impact shaft 312.

[0048] The pressure sensing piston 305 is provided with a pressure balance spring 314 away from the friction drag plug 304, the end of the coaxial pipe 302 is fixedly provided with a sensor bracket 315, the sensor bracket 315 is installed with a distance measuring sensor 316, the distance measuring sensor 316 is used to detect the position of the pressure sensing piston 305.

[0049] One end of the variable distance impact shaft 312 is sealed and inserted through the side wall of the external communication part 301 and corresponds to the gas filter layer 9; the variable distance impact shaft 312 is fixedly provided with a skirt 317, the skirt 317 and the side wall of the external communication part 301 are connected with a retaining spring 318, in the state shown in Figure 6 and Figure 7 The retaining spring 318 is in a natural state, the retaining spring 318 is neither stretched nor compressed; when the retaining spring 318 is in a natural state, the end of the variable distance impact shaft 312 is in contact with the surface of the gas filter layer 9.

[0050] The right-angle bend pipe 3 and the exhaust control pipe 4 in the application are in communication with the outside atmosphere through external pipes; in summer when the air is high in temperature and dry, the application is switched to the external circulation mode, in which, as shown in Figure 2 and Figure 5 , the lifting plug sleeve 801 is in the lowered position, and the lifting plug sleeve 801 blocks the internal circulation air window 8, as shown in Figure 4 , the closing gate plate 806 is in the lowered position, and the right-angle bend pipe 3 and the exhaust control pipe 4 are both in the open state, at this time, the heat preservation and dehumidification module 2 is closed and stops running.

[0051] In the external circulation mode, when the fan unit 5 runs, the high-temperature and dry air in the external environment is drawn through the right-angle bend pipe 3 and sent into the airflow heating bin 6 for secondary heating, and then sprayed out through the drying air jet plate 7 to dry the Teflon adhesive tape semi-finished product, so as to ensure the drying efficiency, and at the same time, the heat preservation and dehumidification module 2 and other components do not need to run, thereby reducing the maintenance cost. At this time, the internal gas of the drying bin 1 can only be discharged to the outside through the exhaust control pipe 4, so as to realize the drying external circulation effect.

[0052] When in winter or plum rain season, the air in the external environment is in a low-temperature and high-humidity state, the application is switched to the internal circulation mode; when switching, as shown in Figure 5 , the positive pressure is input through the control air pipe 805, so that the piston part 804 moves upward relative to the air cylinder barrel 803, at this time, the synchronous optical shaft 802 moves upward, driving the lifting plug sleeve 801 and the closing gate plate 806 to move upward, when the lifting plug sleeve 801 moves to the position, the lifting plug sleeve 801 blocks and closes the right-angle bend pipe 3 in the middle, and the internal circulation air window 8 is opened. At the same time, as shown in Figure 4 , the closing gate plate 806 is completely inserted into the gate plate sliding groove 807, so that the exhaust control pipe 4 is closed.

[0053] In the internal circulation mode, when the fan unit 5 runs, the fan unit 5 will draw the gas in the drying bin 1 through the internal circulation air window 8, and then return to the drying bin 1 through the spray of the drying air jet plate 7, so as to perform internal circulation; and the heat preservation and dehumidification module 2 runs to dehumidify, so as to avoid that the humidity of the internal gas of the drying bin 1 is too high.

[0054] The system of traditional dehumidification by condensation and the like reduces the gas temperature, seriously affects the internal circulating gas temperature maintenance of the drying bin 1, and the heat preservation and dehumidification module 2 designed in the application can reduce the internal gas humidity of the drying bin 1 without greatly affecting the gas temperature. When the axial flow fan 203 works, the gas in the drying bin 1 flows upwards through the moisture absorption ring 204, the gas is absorbed and dehumidified by the moisture absorption ring 204 when passing through the moisture absorption ring 204, and finally is sprayed downwards and returned through the center return pipe 202. The moisture absorption ring 204 rotates continuously between the upper and lower regeneration masks 209 and 210, is regenerated by the high-temperature gas flowing between the upper and lower regeneration masks 209 and 210, and makes the moisture discharge pipe 212 discharge high-humidity steam.

[0055] By switching to the internal circulation mode in winter or plum rain season, heat loss can be reduced, energy saving is better, and drying efficiency is higher.

[0056] In the external circulation mode, the fan unit 5 draws the gas in the external environment through the elbow pipe 3, as shown in Figure 5 The filter layer 9 is arranged in the elbow pipe 3, so that the gas in the external environment is first filtered by the filter layer 9 and then sent into the fan unit 5, thereby avoiding that the Teflon tape production quality is affected by the dust-containing gas sprayed by the drying air jet plate 7.

[0057] When the rotation speed of the fan unit 5 is constant and the driving gas flow is stable, the higher the blockage degree of the filter layer 9 is, the higher the internal negative pressure of the elbow pipe 3 is. Specifically, the understanding can be combined with extreme conditions. When the filter layer 9 is completely blocked and sealed, the internal negative pressure of the elbow pipe 3 is extremely high due to the air suction of the fan unit 5.

[0058] Since the internal negative pressure of the elbow pipe 3 is proportional to the blockage of the filter layer 9, when the internal negative pressure of the elbow pipe 3 is, as shown in Figure 6 The negative pressure acts on the right surface of the pressure sensing piston 305, and the pressure sensing piston 305 moves to the right. In combination with the fact that, as shown in Figure 7 When the pressure sensing piston 305 moves to the right, the friction drag plug 304 is in frictional contact with the inner wall surface of the coaxial pipe 302, the distance between the pressure sensing piston 305 and the friction drag plug 304 increases, the pressure sensing piston 305 drives the gathering pull cover 311 to move to the right, the gathering pull cover 311 extrudes the movable lock block 309 and drives the movable lock block 309 to move inward, the movable lock block 309 moves inward and is retracted, and the movable lock block 309 is clamped into the locking ring groove 313 to lock the variable pitch impact shaft 312 in the column blind hole 307.

[0059] With the pressure sensing piston 305 continues to move to the right, when the gathering pull cover 311 slides to the vertical part of the movable lock block 309, the gathering pull cover 311 cannot continue to move axially relative to the movable lock block 309, at this time the pressure sensing piston 305 drags the friction drag plug 304 to move synchronously to the right through the cooperation of the gathering pull cover 311 and the movable lock block 309, and the variable distance impact shaft 312 moves to the right, so that the retaining spring 318 is elastically stretched until the pressure sensing piston 305 reaches the pressure balance position and stabilizes.

[0060] When the equipment is stopped, the pressure sensing piston 305 loses the negative pressure suction force on the right surface, and under the elastic force of the pressure balance spring 314, the pressure sensing piston 305 moves to the left, at this time the friction drag plug 304 is in friction contact with the coaxial pipe 302, and the position is unchanged initially, first reducing the distance between the pressure sensing piston 305 and the friction drag plug 304, the gathering pull cover 311 moves to the left relative to the movable lock block 309, the movable lock block 309 loses the extrusion of the gathering pull cover 311, and moves outwardly under the elastic support of the support spring 310, at this time the movable lock block 309 moves out of the locking ring groove 313, unlocking the variable distance impact shaft 312; the technical effect achieved by the above is that when the equipment is stopped, the variable distance impact shaft 312 is first unlocked through the structural arrangement, and then the variable distance impact shaft 312 is quickly impacted and slides to the left under the elastic tension of the retaining spring 318, the end of the variable distance impact shaft 312 impacts on one side surface of the filter layer 9, and performs shock cleaning, so that the dust attached to the filter layer 9 is shaken off.

[0061] The impact force storage stroke of the variable distance impact shaft 312 can be adaptively adjusted according to the blockage of the filter layer 9, when the blockage of the filter layer 9 is higher, the variable distance impact shaft 312 is pulled farther to the right under the driving of the pressure sensing piston 305 and other structures, and the impact force generated when the variable distance impact shaft 312 is released is greater.

[0062] When the equipment is stopped for a period of time, the pressure sensing piston 305 is pushed to the left by the elastic force of the pressure balance spring 314, and is reset to the initial state as shown in Figure 7 , facilitating the next cycle.

[0063] When the pressure sensing piston 305 is in the pressure balance position, the position of the pressure sensing piston 305 is detected by the distance measuring sensor 316, which can judge the blockage severity of the filter layer 9, so as to facilitate prompting the staff, that is, the closer the distance between the distance measuring sensor 316 and the pressure sensing piston 305, the higher the blockage severity of the filter layer 9.

[0064] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A drying system for the production of high-temperature resistant Teflon tape, comprising a drying chamber and a heat preservation and dehumidification module connected above the drying chamber, characterized in that: The heat preservation and dehumidification module can reduce the humidity of the gas in the drying chamber when it is working. The drying chamber is equipped with a right-angle bend and an exhaust control pipe on its side wall. The drying chamber is equipped with a fan unit, an airflow heating chamber and a drying jet plate. The fan unit draws gas through the right-angle bend and inputs the gas into the airflow heating chamber under positive pressure for heating. Finally, the gas is sprayed out through the drying jet plate to dry the Teflon tape semi-finished product. A switching control component is installed between the right-angle bend and the exhaust control pipe. An internal circulation vent is opened through the surface of the right-angle bend. In internal circulation mode, the switching control component allows the gas in the drying chamber to enter the fan unit through the internal circulation vent, and the exhaust control pipe is closed, and the heat preservation and dehumidification module operates. In external circulation mode, the switching control component allows outside air to enter the fan unit through the right-angle bend, the internal circulation vent and the exhaust control pipe are closed, and the heat preservation and dehumidification module stops operating. The right-angle bend has an internal filter layer that filters outside gas as it enters the fan unit. An external connection is connected to the inner wall of the right-angle bend, and a coaxial tube is connected to this external connection. The coaxial tube is a cylindrical structure with openings at both ends. One end of the coaxial tube connects to the outside atmosphere through the external connection, while the other end connects to the inner cavity of the right-angle bend. A pipe wall retaining ring is fixedly installed on the inner wall of the coaxial tube, with the retaining ring located away from the external connection. A friction drag plug and a pressure-sensing piston are sequentially arranged on the side; the friction drag plug is in frictional contact with the inner wall surface of the coaxial tube, and the pressure-sensing piston is in sealing contact with the inner wall surface of the coaxial tube; a central column is fixedly arranged at the center of the friction drag plug, and a blind hole is opened in the central column. A locking block through groove is opened through the side wall of the blind hole, and a movable locking block is arranged in the locking block through groove. A supporting spring is arranged outside the movable locking block, and the supporting spring provides supporting elastic force to the movable locking block, so that the movable locking block has the ability to expand outward. The pressure-sensing piston has a fixedly installed convergent cover on one side. When the distance between the pressure-sensing piston and the friction drag plug increases, the convergent cover presses against the movable locking block, driving the movable locking block to retract and move towards the axis of the friction drag plug. A variable-pitch impact shaft is inserted into the blind hole of the column. A locking ring groove is opened on the surface of the variable-pitch impact shaft. When the movable locking block retracts and moves towards the axis of the friction drag plug, the movable locking block will be locked into the locking ring groove, so that the variable-pitch impact shaft and the central column are axially locked. Thus, when the friction drag plug moves axially, it can drive the variable-pitch impact shaft to move axially. A pressure balance spring is installed on the side of the pressure-sensing piston away from the friction drag plug. A sensor bracket is fixedly installed at the end of the coaxial tube. A distance measuring sensor is installed on the sensor bracket. The distance measuring sensor is used to detect the position of the pressure-sensing piston. One end of the variable-pitch impact shaft is sealed and inserted through the side wall of the external communication part, corresponding to the filter layer. A skirt is fixedly installed on the variable-pitch impact shaft. A retaining spring is connected between the skirt and the side wall of the external communication part.

2. The drying system for producing high-temperature resistant Teflon tape according to claim 1, characterized in that: The switching control component includes a lifting plug and a synchronous optical axis. The lifting plug is disposed inside the right-angle bend and is in sealed contact with the inner wall surface of the right-angle bend. When the lifting plug moves down to its position, it can block and close the internal circulation air window, while the right-angle bend is in a connected state. When the lifting plug moves up to its position, the internal circulation air window is opened, while the right-angle bend is blocked and closed. A synchronous optical axis is fixedly installed on the lifting sleeve, and the movement of the lifting sleeve is controlled by the synchronous optical axis.

3. The drying system for producing high-temperature resistant Teflon tape according to claim 2, characterized in that: A cylinder is fixedly mounted on the outer surface of the right-angle bend. The synchronization optical axis passes through the top wall of the right-angle bend and the interior of the cylinder, with a sealed contact between the synchronization optical axis and the top wall of the right-angle bend. A piston is fixedly mounted on the outside of the synchronization optical axis, with a sealed contact between the piston and the inner wall surface of the cylinder. A control air pipe is connected to the outside of the cylinder, and the control air pipe drives the piston by inputting positive and negative pressure gas, thereby driving the synchronization optical axis to move axially.

4. The drying system for producing high-temperature resistant Teflon tape according to claim 2, characterized in that: A closed gate is fixedly installed at the end of the synchronous optical axis, and a gate groove is opened inside the exhaust control pipe. When the lifting plug moves up to the position, the synchronous optical axis drives the closed gate to move up, so that the closed gate is inserted into the gate groove to close the exhaust control pipe.

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