Drying device for brown PTFE fiber raw material production

Abstract

The invention discloses a drying device for brown PTFE fiber raw material production, and belongs to the technical field of drying devices.The drying device comprises a drying box, an assembling frame is arranged outside the drying box, and a heating air blowing mechanism is arranged on the surface of the assembling frame and comprises an air blower, an electric heating plate and an embedded heat conduction groove; the air blower is fixed to the surface of one side of the assembly frame, the embedded heat conduction groove is formed in the middle of the lower end face of the drying box, and the electric heating plate is embedded in the embedded heat conduction groove of the drying box. The drying box and fiber raw materials in the drying box are heated through the heating air blowing mechanism and the electric heating plate, and air flow generated by working of the air blower is guided into the drying chamber of the drying box and diffuses heat in the internal space; the mode that the bottom of the drying chamber is heated through an electric heating plate can improve the condition that the drying effect of the bottom area is poor due to the accumulation problem of PTFE fiber raw materials in a traditional hot air drying mode.

Description

Technical Field

[0001] The invention belongs to the technical field of drying devices, and in particular relates to a drying device for producing brown PTFE fiber raw materials. Background Art

[0002] Polytetrafluoroethylene (PTFE) is a polymer made from tetrafluoroethylene as a monomer. Its chemical formula is (C2F4)n. It has excellent heat and cold resistance and can be used for a long time at -180 to 260 degrees Celsius. This material is resistant to acids, alkalis, and various organic solvents. It is almost insoluble in all solvents. At the same time, polytetrafluoroethylene has the characteristics of high temperature resistance and its friction coefficient is extremely low. Therefore, it can be used as a lubricant and has become an ideal coating for the inner layer of easy-to-clean water pipes. It has excellent chemical stability, corrosion resistance, sealing, high lubrication and non-stick properties, electrical insulation and good It has good anti-aging endurance and is used as engineering plastics to be made into polytetrafluoroethylene tubes, rods, belts, plates, films, etc. It is generally used in corrosion-resistant pipes, containers, pumps, valves with high performance requirements, as well as radar, high-frequency communication equipment, radio equipment, etc. In the pre-spinning process of brown PTFE fiber production, the raw material particles need to be dried. At present, hot air blow dryer is a commonly used equipment in chemical production enterprises. Its function is to dry the raw materials. The working principle of the hot air blow dryer is to introduce a hot air flow at a certain temperature to evaporate the moisture in the raw material particles to achieve the purpose of drying the raw material particles.

[0003] At present, PTFE fiber raw materials are piled up in a drying oven, so that when hot air is passed into the drying oven, the surface of the raw material pile has a better drying effect. However, due to the high pile state of the PTFE fiber raw materials, the penetration depth of the hot air is small, which makes it difficult to dry the middle and bottom areas of the PTFE fiber raw material pile, resulting in uneven and incomplete drying of the PTFE fiber raw materials in various parts of the drying oven. In addition, the PTFE fiber raw materials have poor fluidity in the drying oven, so the close adhesion between the raw materials will also affect the hot air drying effect. Summary of the Invention

[0004] The object of the present invention is to provide a kind of brown PTFE fiber raw material production drying device, to solve the problem proposed in above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a drying device for producing brown PTFE fiber raw materials, comprising a drying box, an assembly frame is provided on the outside of the drying box, a heating and blowing mechanism is provided on the surface of the assembly frame, the heating and blowing mechanism comprises a blower, an electric heating plate and an embedded heat-conducting groove, the blower is fixed to a side surface of the assembly frame, the embedded heat-conducting groove is provided in the middle of the lower end surface of the drying box, the electric heating plate is embedded in the embedded heat-conducting groove of the drying box, the electric heating plate heats the drying box and the fiber raw materials inside, and the airflow generated by the blower is introduced into the drying chamber of the drying box and diffuses the heat in the internal space. The electric heating plate heats the bottom of the drying chamber, which can improve the poor drying effect of the bottom area due to the accumulation of PTFE fiber raw materials in the traditional hot air drying method;

[0006] The drying box is provided with a feed air duct and an exhaust duct. The feed air duct is fixed to the inner wall of the drying box, and the exhaust duct is also fixed to the inner wall of the drying box. The feed air duct can promote the dissipation of heat at the bottom through strip-shaped air outlet holes whose surface is smaller than that of the PTFE fiber raw material. The exhaust duct blows the heat on the inner wall of the drying box to improve the temperature environment inside the drying box so as to dry the top area of the PTFE fiber raw material pile, thereby ensuring the uniformity of drying of all parts of the PTFE fiber raw material pile.

[0007] A material-diverting mechanism is provided inside the drying box, and the material-diverting mechanism includes a material-diverting rake frame, a supporting stand, an adjusting screw sleeve and a positioning screw. The material-diverting rake frame is slidably connected to the inside of the drying box, the supporting stand is fixed to the upper end of the material-diverting rake frame, the adjusting screw sleeve is embedded and fixed inside the supporting stand, and the positioning screw is rotatably connected to the inner wall of the drying box. During the drying process, the reciprocating material-diverting rake frame digs the PTFE fiber raw material pile and promotes the dissipation of internal heat.

[0008] It should be noted in the scheme that a fixed support is fixed to one side surface of the drying box, and an electric push rod is fixed to one side surface of the assembly frame. The output end of the electric push rod is fixed to the lower part of the fixed support. During maintenance, the electric heating plate and the blower can be exposed and the maintenance operation space between the drying box and the assembly frame can be expanded.

[0009] It is further worth mentioning that a heating base is fixed to the inner bottom wall of the assembly frame, and the electric heating plate is fixed to the upper surface of the heating base.

[0010] It should be further explained that one end of the material-passing air duct is passed through a port of the drying box, one end of the material-passing air duct is provided with a docking pipe port, the blower is provided with an air outlet at one end close to the drying box, and one end of the docking pipe port is aligned with the air outlet of the blower.

[0011] As a preferred embodiment, the surfaces of the feeding air duct and the exhaust duct are both provided with strip-shaped air outlet holes, the exhaust duct is arranged above the feeding air duct, and the feeding air duct and the exhaust duct are connected.

[0012] As a preferred embodiment, the positioning screw is threadedly connected to the positioning sleeve, a drive motor is fixed to one side surface of the drying box, and one end of the positioning screw is fixed to the output shaft of the drive motor.

[0013] As a preferred embodiment, the material rake frame is provided with material rake teeth, and a through hole is provided between adjacent material rake teeth. The surface of the material rake frame is provided with a telescopic circular opening, and the telescopic circular opening is slidably matched with the material passing air duct.

[0014] As a preferred embodiment, a guide slider is fixed to one side surface of the material rake frame, a guide groove is provided on the inner wall of the drying box, the guide slider is slidably connected in the guide groove of the drying box, and the bottom of the material rake teeth is attached to the inner bottom wall of the drying box.

[0015] As a preferred embodiment, the upper cover of the drying box is provided with a magnetic cover plate, the magnetic cover plate is magnetically attracted to the upper end surface of the drying box, a cover opening handle is fixed to the upper end surface of the magnetic cover plate, a drying chamber is provided inside the drying box, and a control panel is fixed to the front surface of the assembly frame.

[0016] Compared with the prior art, the drying device for producing brown PTFE fiber raw materials provided by the present invention has at least the following beneficial effects:

[0017] Through the heating and blowing mechanism, the electric heating plate heats the drying box and the fiber raw materials inside, and the airflow generated by the blower is introduced into the drying chamber of the drying box and diffuses the heat in the internal space. The electric heating plate heats the bottom of the drying chamber, which can improve the poor drying effect of the bottom area due to the accumulation of PTFE fiber raw materials in the traditional hot air drying method.

[0018] By setting up the feeding air duct and exhaust duct, the feeding air duct can promote the dissipation of heat at the bottom through the strip air outlet holes whose surface is smaller than the PTFE fiber raw material. The exhaust duct can blow the heat on the inner wall of the drying box to improve the temperature environment inside the drying box so as to dry the top area of the PTFE fiber raw material pile, thereby ensuring the uniformity of drying of various parts of the PTFE fiber raw material pile.

[0019] Through the provided material-diverting mechanism, during the drying process, the reciprocating material-diverting rake performs material-diverting operation on the PTFE fiber raw material pile and promotes the dissipation of internal heat.

[0020] By arranging the drying box, the assembly frame and the electric push rod, during maintenance, the electric heating plate and the blower can be exposed and the maintenance operation space between the drying box and the assembly frame can be expanded. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a perspective view of the overall structure of a drying device for producing brown PTFE fiber raw materials according to the present invention;

[0023] Figure 2 This is a perspective view of the assembly frame structure of a drying device for producing brown PTFE fiber raw materials according to the present invention;

[0024] Figure 3 This is a three-dimensional diagram of the drying box structure of a drying device for producing brown PTFE fiber raw materials according to the present invention;

[0025] Figure 4 This is a three-dimensional diagram of the structure of the embedded heat-conducting groove of a drying device for producing brown PTFE fiber raw materials of the present invention;

[0026] Figure 5 A perspective view of the cross-sectional structure of a drying box of a drying device for producing brown PTFE fiber raw materials according to the present invention;

[0027] Figure 6 This is a three-dimensional diagram of the structure of the material feeding air duct of a drying device for producing brown PTFE fiber raw materials according to the present invention;

[0028] Figure 7 This is a three-dimensional diagram of the material rake structure of a drying device for producing brown PTFE fiber raw materials according to the present invention.

[0029] In the figure: 1. Drying box; 2. Magnetic cover; 3. Opening handle; 4. Drying chamber; 5. Assembly frame; 6. Heating base; 7. Electric heating plate; 8. Embedded heat conduction groove; 9. Electric push rod; 10. Fixed support; 11. Blower; 12. Air outlet; 13. Feeding air duct; 14. Exhaust duct; 15. Strip air outlet; 16. Butt joint; 17. Material rake frame; 18. Material rake teeth; 19. Passage; 20. Telescopic circular opening; 21. Guide slide; 22. Support stand; 23. Adjusting screw sleeve; 24. Adjusting screw; 25. Drive motor; 26. Control panel; 27. Guide slide. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the embodiments.

[0031] See also Figure 1-7 The present invention provides a drying device for producing brown PTFE fiber raw materials, comprising a drying box 1, an assembly frame 5 is provided on the outside of the drying box 1, a heating and blowing mechanism is provided on the surface of the assembly frame 5, the heating and blowing mechanism comprises a blower 11, an electric heating plate 7 and an embedded heat-conducting groove 8, the blower 11 is fixed to a side surface of the assembly frame 5, the embedded heat-conducting groove 8 is opened in the middle of the lower end surface of the drying box 1, and the electric heating plate 7 is embedded in the embedded heat-conducting groove 8 of the drying box 1. After the blower 11 and the electric heating plate 7 are powered on, the electric heating plate 7 heats the drying box 1 and the fiber raw materials inside, and the airflow generated by the blower 11 is introduced into the drying chamber 4 of the drying box 1 and diffuses the heat in the internal space;

[0032] The drying box 1 is provided with a feed air duct 13 and an exhaust duct 14. The feed air duct 13 is fixed to the inner wall of the drying box 1, and the exhaust duct 14 is also fixed to the inner wall of the drying box 1. After the feed air duct 13 and the exhaust duct 14 are filled with air, the feed air duct 13 is passed through the PTFE fiber raw material pile. In this way, the feed air duct 13 can promote the dissipation of heat at the bottom through the strip-shaped air outlet holes 15 whose surface is smaller than the PTFE fiber raw material.

[0033] A material digging mechanism is provided inside the drying box 1, which includes a material digging rake frame 17, a support stand 22, an adjusting screw sleeve 23 and an adjusting screw 24. The material digging rake frame 17 is slidably connected to the inside of the drying box 1, the support stand 22 is fixed to the upper end of the material digging rake frame 17, the adjusting screw sleeve 23 is embedded and fixed inside the support stand 22, and the adjusting screw 24 is rotatably connected to the inner wall of the drying box 1. During the drying process, the driving motor 25 drives the adjusting screw 24 to rotate in the drying box 1, and the support stand 22 threadedly connected to the adjusting screw 24 drives the material digging rake frame 17 to reciprocate.

[0034] Further as Figure 1 、 Figure 2 and Figure 3 As shown, it is worth noting that a fixed support 10 is fixed to one side surface of the drying box 1, and an electric push rod 9 is fixed to one side surface of the assembly frame 5. The output end of the electric push rod 9 is fixed to the lower part of the fixed support 10. During maintenance, the electric push rod 9 is turned on, and the electric push rod 9 controls the drying box 1 to rise and separate from the assembly frame 5.

[0035] Further as Figure 3 As shown, it is worth noting that a heating base 6 is fixed to the inner bottom wall of the assembly frame 5 , and an electric heating plate 7 is fixed to the upper surface of the heating base 6 .

[0036] This solution has the following working process: before use, the brown PTFE fiber raw material is put into the drying chamber 4 of the drying box 1, and then the magnetic cover plate 2 is magnetically adsorbed on the upper port of the drying box 1. When in use, the electric heating plate 7 on the upper part of the heating base 6 is embedded in the embedded heat conduction groove 8 of the drying box 1, and at the same time, the air outlet 12 of the blower 11 is connected to the docking pipe port 16 of the feeding air duct 13. After the blower 11 and the electric heating plate 7 are energized, the electric heating plate 7 heats the drying box 1 and the fiber raw material inside, and the airflow generated by the blower 11 is introduced into the drying chamber 4 of the drying box 1 and diffuses the heat in the internal space. The way in which the electric heating plate 7 heats the bottom of the drying chamber 4 can improve the situation in which the drying effect of the bottom area is poor due to the accumulation of PTFE fiber raw materials in the traditional hot air drying method;

[0037] After air is introduced into the feeding air duct 13 and the exhaust duct 14, the feeding air duct 13 is inserted into the PTFE fiber raw material pile. In this way, the feeding air duct 13 can promote the dissipation of heat at the bottom through the strip-shaped air outlet holes 15 whose surface is smaller than the PTFE fiber raw material. The exhaust duct 14 blows the heat on the inner wall of the drying box 1, thereby improving the temperature environment inside the drying box 1 so as to dry the top area of the PTFE fiber raw material pile, thereby ensuring the uniformity of drying of all parts of the PTFE fiber raw material pile.

[0038] During the drying process, the driving motor 25 drives the adjusting screw 24 to rotate in the drying box 1, and the supporting frame 22 threadedly connected to the adjusting screw 24 drives the material rake 17 to reciprocate. The reciprocating material rake 17 performs material operation on the PTFE fiber raw material pile and promotes the dissipation of internal heat;

[0039] During maintenance, the electric push rod 9 is turned on, and the electric push rod 9 controls the drying box 1 to rise and separate from the assembly frame 5, so that the electric heating plate 7 and the blower 11 can be exposed and the maintenance operation space between the drying box 1 and the assembly frame 5 can be expanded.

[0040] Further as Figure 2 、 Figure 5 and Figure 6 As shown, it is worth mentioning that one end of the feeding air duct 13 is passed through a port of the drying box 1, and a docking pipe port 16 is provided at one end of the feeding air duct 13. An air outlet 12 is provided at one end of the blower 11 close to the drying box 1, and one end of the docking pipe port 16 is aligned with the air outlet 12 of the blower 11.

[0041] Further as Figure 6 As shown, it is worth noting that strip-shaped air outlet holes 15 are provided on the surfaces of the feeding air duct 13 and the exhaust duct 14. The exhaust duct 14 is provided above the feeding air duct 13, and the feeding air duct 13 and the exhaust duct 14 are connected.

[0042] Further as Figure 5 As shown, it is worth noting that the adjusting screw 24 is threadedly connected to the adjusting screw sleeve 23 , a driving motor 25 is fixed to one side surface of the drying box 1 , and one end of the adjusting screw 24 is fixed to the output shaft of the driving motor 25 .

[0043] Further as Figure 7 As shown, it is worth noting that the material rake frame 17 is provided with material rake teeth 18, and a through hole 19 is provided between adjacent material rake teeth 18. The surface of the material rake frame 17 is provided with a telescopic circular opening 20, which is slidably matched with the material passing air duct 13.

[0044] Further as Figure 7 As shown, it is worth mentioning that a guide slider 21 is fixed to one side surface of the material rake frame 17, a guide groove 27 is provided on the inner wall of the drying box 1, the guide slider 21 is slidably connected in the guide groove 27 of the drying box 1, and the bottom of the material rake teeth 18 is attached to the inner bottom wall of the drying box 1.

[0045] Further as Figure 1 As shown, it is worth mentioning that the upper cover of the drying box 1 is provided with a magnetic cover plate 2, which is magnetically attracted to the upper end surface of the drying box 1, and a cover opening handle 3 is fixed to the upper end surface of the magnetic cover plate 2. A drying chamber 4 is provided inside the drying box 1, and a control panel 26 is fixed to the front surface of the assembly frame 5.

[0046] In summary: the electric heating plate 7 heats the drying box 1 and the fiber raw materials inside, and the airflow generated by the blower 11 is introduced into the drying chamber 4 of the drying box 1 and diffuses the heat in the internal space. The way in which the electric heating plate 7 heats the bottom of the drying chamber 4 can improve the situation in which the drying effect of the bottom area is poor due to the accumulation of PTFE fiber raw materials in the traditional hot air drying method; the feeding air duct 13 can promote the dissipation of heat from the bottom through the strip air outlet 15 whose surface is smaller than the PTFE fiber raw materials, and the exhaust duct 14 blows the heat on the inner wall of the drying box 1 to improve the temperature environment inside the drying box 1 so as to dry the top area of the PTFE fiber raw material pile, thereby ensuring the uniformity of drying of various parts of the PTFE fiber raw material pile; during the drying process, the reciprocating material rake 17 performs material operation on the PTFE fiber raw material pile and promotes the dissipation of heat inside it; during maintenance, the electric heating plate 7 and the blower 11 can be exposed and the maintenance operation space between the drying box 1 and the assembly frame 5 can be expanded.

[0047] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A drying device for producing brown PTFE fiber raw materials, comprising a drying oven (1), characterized in that: The drying box (1) is provided with an assembly frame (5) on the outside, and a heating and blowing mechanism is provided on the surface of the assembly frame (5), and the heating and blowing mechanism includes a blower (11), an electric heating plate (7) and an embedded heat-conducting groove (8), the blower (11) is fixed on a side surface of the assembly frame (5), the embedded heat-conducting groove (8) is opened in the middle of the lower end surface of the drying box (1), the electric heating plate (7) is embedded in the embedded heat-conducting groove (8) of the drying box (1), and the interior of the drying box (1) is provided with a feeding air duct (13) and an exhaust duct (14), the feeding air duct (13) is fixed to the inner surface of the drying box (1). The drying box (1) is fixed on the inner wall of the drying box, and the exhaust duct (14) is also fixed on the inner wall of the drying box (1). A material-diverting mechanism is provided inside the drying box (1), and the material-diverting mechanism includes a material-diverting rake frame (17), a support stand (22), an adjustment screw sleeve (23) and an adjustment screw (24). The material-diverting rake frame (17) is slidably connected to the inside of the drying box (1), the support stand (22) is fixed to the upper end of the material-diverting rake frame (17), the adjustment screw sleeve (23) is embedded and fixed inside the support stand (22), and the adjustment screw (24) is rotatably connected to the inner wall of the drying box (1).

2. The drying device for producing brown PTFE fiber raw material according to claim 1, characterized in that: A fixed support (10) is fixed on one side surface of the drying box (1), an electric push rod (9) is fixed on one side surface of the assembly frame (5), and an output end of the electric push rod (9) is fixed to the lower part of the fixed support (10).

3. The drying device for producing brown PTFE fiber raw material according to claim 2, characterized in that: A heating base (6) is fixed to the inner bottom wall of the assembly frame (5), and the electric heating plate (7) is fixed to the upper surface of the heating base (6).

4. The drying device for producing brown PTFE fiber raw material according to claim 3, characterized in that: One end of the material-penetrating air duct (13) is passed through a port of the drying box (1), and a connecting pipe port (16) is provided at one end of the material-penetrating air duct (13). An air outlet (12) is provided at one end of the blower (11) close to the drying box (1), and one end of the connecting pipe port (16) is aligned with the air outlet (12) of the blower (11).

5. The drying device for producing brown PTFE fiber raw material according to claim 4, characterized in that: The surfaces of the feeding air duct (13) and the exhaust duct (14) are both provided with strip-shaped air outlet holes (15); the exhaust duct (14) is provided above the feeding air duct (13); and the feeding air duct (13) and the exhaust duct (14) are connected.

6. The drying device for producing brown PTFE fiber raw material according to claim 5, characterized in that: The adjusting screw (24) is threadedly connected to the adjusting screw sleeve (23); a driving motor (25) is fixed to one side surface of the drying box (1); and one end of the adjusting screw (24) is fixed to the output shaft of the driving motor (25).

7. The drying device for producing brown PTFE fiber raw material according to claim 6, characterized in that: The material rake frame (17) is provided with material rake teeth (18), and a through hole (19) is provided between adjacent material rake teeth (18). The surface of the material rake frame (17) is provided with a telescopic circular opening (20), and the telescopic circular opening (20) is slidably matched with the material passing air duct (13).

8. The drying device for producing brown PTFE fiber raw material according to claim 7, characterized in that: A guide slider (21) is fixed to one side surface of the material rake frame (17), a guide chute (27) is provided on the inner wall of the drying box (1), the guide slider (21) is slidably connected in the guide chute (27) of the drying box (1), and the bottom of the material rake teeth (18) is attached to the inner bottom wall of the drying box (1).

9. The drying device for producing brown PTFE fiber raw material according to claim 8, characterized in that: The upper cover of the drying box (1) is provided with a magnetic cover plate (2), the magnetic cover plate (2) is magnetically attracted to the upper end surface of the drying box (1), and a cover opening handle (3) is fixed to the upper end surface of the magnetic cover plate (2). A drying chamber (4) is provided inside the drying box (1), and a control panel (26) is fixed to the front surface of the assembly frame (5).

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