PTFE short fiber high-temperature test box

Abstract

The utility model discloses a PTFE short fiber high-temperature test box, and belongs to the technical field of high-temperature testing. The device mainly comprises an equipment box; the heating assembly is provided with a shell and two groups of bearing plates; the scattering assembly is arranged on the heating assembly and comprises a draught fan, the draught fan is installed on one side of the shell, and a storage tank is arranged at the input end of the draught fan; one end of the air delivery pipe is connected with the output end of the fan; the first connecting part is arranged at the other end of the gas conveying pipe; the scattering box is mounted on one group of bearing plates; one end of the air inlet pipe extends into the scattering box, and the other end of the air inlet pipe is connected with one end of the first connecting part. According to the high-temperature test box for the PTFE short fibers, by arranging the scattering assembly, the PTFE short fibers are scattered, mutual adhesion between the PTFE short fibers is avoided, and the contact area between the PTFE short fibers and hot air is increased, so that temperature rise is accelerated, and the effect of scattering the PTFE short fibers during testing is achieved.

Description

Technical Field

[0001] This application relates to the field of high temperature testing technology, specifically a PTFE short fiber high temperature test chamber. Background Art

[0002] PTFE short fiber, or polytetrafluoroethylene short fiber, is a synthetic fiber made from polytetrafluoroethylene resin powder through a special production process. It is generally manufactured by the film splitting method, which sinters the polytetrafluoroethylene powder into cylinders, and then cut or slicing them before hot stretching and other treatments to obtain white fibers.

[0003] After the PTFE short fibers are manufactured, they need to be subjected to high-temperature testing to ensure that they meet the requirements of relevant standards and regulations.

[0004] For example, the patent with publication number CN215353496U specifically discloses a small high temperature test chamber. The test chamber uses an induction motor to drive the axial flow fan blades to rotate, so as to input the high temperature generated by the heater located in the gap between the axial flow fan blades and the induction motor into the test chamber to provide high temperature for the test sample.

[0005] When testing PTFE short fibers in the aforementioned patent's test chamber, the fibers can only be placed inside the test chamber, left to stand in a high-temperature environment for a period of time, and then removed and the internal fiber condition observed by the testing instrument. When testing the physical and chemical stability of short fibers in a high-temperature environment, it is necessary to determine whether their original form will affect the test results. If the original form (such as fiber bundles) will hinder the uniform transfer of heat, resulting in inaccurate test results, then it may be necessary to break up the short fibers.

[0006] Therefore, it is necessary to provide a PTFE short fiber high temperature test chamber to solve the above problems.

[0007] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0008] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a high-temperature test chamber for PTFE short fibers that achieves the effect of breaking up PTFE short fibers during testing.

[0009] The technical solution adopted by this application to solve its technical problem is as follows: a PTFE short fiber high temperature test chamber, including an equipment box; a heating assembly, which is disposed on the equipment box, and the heating assembly has an outer shell suitable for providing a heating space and two sets of support plates for supporting PTFE short fibers; a dispersing assembly, which is disposed on the heating assembly, and the dispersing assembly includes: a fan, which is installed on one side of the outer shell, and a storage tank is provided at the input end of the fan; an air supply pipe, one end of which is connected to the output end of the fan; a first connecting part, which is disposed at the other end of the air supply pipe; a dispersing box, which is installed on one of the sets of support plates; and an air inlet pipe, one end of which extends into the interior of the dispersing box, and the other end of which is connected to one end of the first connecting part.

[0010] Furthermore, the first connecting part has two sets of connectors, each with a plug, a semi-circular groove, and a screw hole. A corrugated pipe is provided between the two sets of connectors.

[0011] Furthermore, the heating assembly includes an inner shell disposed inside the outer shell, two sets of circulation pipes disposed on the outer wall of the inner shell, a cavity being formed in the inner shell, and a door being disposed on the outer shell.

[0012] Furthermore, an exhaust pipe is provided on the other side of the dispersing box, and a second connecting part is provided on the exhaust pipe. An air outlet pipe is provided through both the inner shell and the outer shell. One end of the air outlet pipe is connected to the end of the second connecting part away from the exhaust pipe, and a solenoid valve is provided on the air outlet pipe.

[0013] Furthermore, two sets of fixing plates are installed inside the cavity, and the two sets of bearing plates are slidably mounted on the two sets of fixing plates respectively.

[0014] The beneficial effects of this application are: The PTFE short fiber high temperature test chamber provided by this application disperses the PTFE short fibers by setting the dispersing component, thereby avoiding mutual adhesion between the PTFE short fibers and increasing the contact area between them and hot air to accelerate the heating, thus achieving the effect of dispersing the PTFE short fibers during the test.

[0015] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0017] In the attached diagram:

[0018] Figure 1This is an overall schematic diagram of a PTFE short fiber high temperature test chamber according to this application;

[0019] Figure 2 for Figure 1 A cross-sectional view of the whole from another perspective;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0022] The following are the labeling elements in the figure:

[0023] 1. Equipment box;

[0024] 2. Heating assembly; 21. Outer shell; 22. Fixing plate; 23. Support plate; 24. Cavity; 25. Door; 26. Inner shell; 27. Circulation pipe; 28. Exhaust pipe; 29. ​​Solenoid valve;

[0025] 3. Dispersing assembly; 31. Storage tank; 32. Fan; 33. Gas supply pipe; 34. Dispersing box; 35. Air inlet pipe;

[0026] 4. First connecting part; 41. Connector head; 42. Screw hole; 43. Plug head; 44. Corrugated pipe; 5. Second connecting part. DETAILED DESCRIPTION

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

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

[0029] like Figure 1 As shown, this application provides a PTFE short fiber high temperature test chamber, including an equipment box 1, which is used to place heating equipment, and a heating component 2 is provided on the equipment box 1, which is used to heat the PTFE short fiber;

[0030] like Figures 1-2As shown, the heating assembly 2 includes an outer shell 21 fixedly installed on the top of the equipment box 1, and an inner shell 26 is provided inside the outer shell 21. Two sets of circulation pipes 27 are provided on the outer wall of the inner shell 26. The input and output ends of the circulation pipes 27 are connected to the heating equipment pipes in the equipment box 1, so that the heating medium can be driven to circulate in the circulation pipes 27 under the drive of the heating equipment, thereby heating the inner shell 26.

[0031] Meanwhile, a cavity 24 for placing PTFE short fibers is provided on the inner shell 26, and a door 25 is provided on the outer shell 21. The door 25 is used to seal the cavity 24 to ensure the airtightness of the high temperature test.

[0032] Continue to refer to Figure 1 Inside the cavity 24, two sets of fixing plates 22 are fixedly installed. Each set of fixing plates 22 is slidably provided with a bearing plate 23, so that the bearing plate 23 can be pulled out under the action of external force, thereby facilitating the placement of the PTFE short fibers to be heated. It should be noted that the cavity 24 is divided into three test spaces by the two sets of bearing plates 23, so that multiple different samples can be tested at one time.

[0033] Meanwhile, a dispersing component 3 is provided on the heating component 2, which is used to disperse the flocculent PTFE short fibers.

[0034] like Figures 1-3 As shown, the dispersing assembly 3 includes a fan 32 fixedly installed on one side of the housing 21, and a storage tank 31 fixedly installed at the input end of the fan 32. The storage tank 31 is used to store the gas for dispersing PTFE short fibers. The gas is an inert gas, so it will not react with the fibers, thereby ensuring the accuracy of the test. A gas supply pipe 33 is provided at the output end of the fan 32. A first connecting part 4 is provided on the gas supply pipe 33. A dispersing box 34 is provided on the upper support plate 23. An air inlet pipe 35 is provided on one side of the dispersing box 34. One end of the air inlet pipe 35 extends into the dispersing box 34. At the same time, the end of the first connecting part 4 away from the gas supply pipe 33 is connected to one end of the air inlet pipe 35.

[0035] It should be noted that the dispersing box 34 has a hinged door, which is convenient to open the hinged door to put the PTFE short fibers into the dispersing box 34. Then, driven by the fan 32, the gas in the storage tank 31 is pumped into the gas supply pipe 33 and input into the dispersing box 34 through the first connection part 4 and the air inlet pipe 35 to disperse the PTFE short fibers.

[0036] like Figure 2 and Figure 4As shown, an exhaust pipe (not shown in the figure) is provided on the other side of the dispersing box 34. The exhaust pipe is provided with a second connecting part 5 with the same structure as the first connecting part 4. At the same time, an exhaust pipe 28 is connected to the second connecting part 5. The exhaust pipe 28 passes through the inner shell 26 and the outer shell 21 and extends out of the outer shell 21. A solenoid valve 29 is provided on the exhaust pipe 28 so that when there is too much gas in the dispersing box 34, the solenoid valve 29 opens and the excess gas is discharged through the exhaust pipe 28.

[0037] Meanwhile, a filter screen (not shown in the figure) is installed on the exhaust pipe to prevent PTFE short fibers from being discharged simultaneously when excess gas is discharged.

[0038] It should be noted that the structure and principle of the first connecting part 4 and the second connecting part 5 are the same. The following explanation uses the first connecting part 4 as an example.

[0039] like Figures 2-3 As shown, the first connecting part 4 has two sets of connectors 41 for connecting two sets of air tubes, and a plug 43 is provided on the connector 41. The plug 43 can be close to or away from the connector 41, and both the connector 41 and the plug 43 are provided with semi-circular grooves (not shown in the figure) so that when the plug 43 is close to the connector 41, it forms a circle for clamping the air inlet tube 35.

[0040] Meanwhile, screw holes 42 are provided on both the connector 41 and the plug 43, so that the connector 41 and the plug 43 can be fixed by screwing the screw into the screw holes 42. A bellows 44 is provided between the two sets of connectors 41 to facilitate communication between the two sets of connectors 41. Due to the elasticity of the bellows 44, the connector 41 can be extended or retracted according to the actual situation to facilitate the connection of the two sets of air tubes.

[0041] During installation, insert one end of the air intake pipe 35 into the semi-circular groove of one set of connectors 41 and extend it into the bellows 44. Then, bring the plug 43 close to the connector 41 and fix it with bolts. It should be noted that the installation of the other set of connectors 41 and the air supply pipe 33 can be done by repeating the above operation. A sealing ring is provided at the connection between the bellows 44 and the air pipe to ensure airtightness.

[0042] In summary, during the testing of PTFE short fibers, the PTFE short fibers are placed in the dispersing chamber 34, and then the heating component 2 is activated to heat the exterior. During the heating process, the fan 32 is activated to introduce gas into the dispersing chamber 34, which disperses the PTFE short fibers, preventing them from sticking together and increasing their contact area with the hot air. This allows for more thorough heat exchange between the hot air and the short fibers, resulting in uniform heating. Simultaneously, the solenoid valve 29 can be opened or closed during the test to control the air pressure in the dispersing chamber 34. After the test, the heating component 2 and the dispersing component 3 are turned off, and the PTFE short fibers in the dispersing chamber 34 are collected and removed.

[0043] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-temperature test chamber for PTFE short fibers, characterized in that: include: Equipment box (1); Heating assembly (2), which is disposed on the equipment housing (1), having a housing (21) suitable for providing a heating space and two sets of support plates (23) for supporting PTFE short fibers; A dispersing component (3) is disposed on the heating component (2), the dispersing component (3) comprising: A fan (32) is installed on one side of the outer casing (21), and a storage tank (31) is provided at the input end of the fan (32); Gas delivery pipe (33), one end of which is connected to the output end of the fan (32); A first connecting part (4) is provided at the other end of the gas transmission pipe (33); Dispersing box (34), said dispersing box (34) is mounted on one of the sets of said bearing plates (23); An air intake pipe (35) is provided, one end of which extends into the interior of the dispersing box (34), and the other end of which is connected to one end of the first connecting part (4).

2. The PTFE short fiber high-temperature test chamber according to claim 1, characterized in that: The first connecting part (4) has two sets of connectors (41), each connector (41) is provided with a plug (43), both the connector (41) and the plug (43) are provided with a semi-circular groove, both the connector (41) and the plug (43) are provided with a screw hole (42), and a corrugated pipe (44) is provided between the two sets of connectors (41).

3. The PTFE short fiber high-temperature test chamber according to claim 1, characterized in that: The heating assembly (2) includes an inner shell (26) disposed inside the outer shell (21), two sets of circulation pipes (27) are disposed on the outer wall of the inner shell (26), a cavity (24) is opened on the inner shell (26), and a door (25) is disposed on the outer shell (21).

4. A PTFE short fiber high-temperature test chamber according to claim 3, characterized in that: An exhaust pipe is provided on the other side of the dispersing box (34), and a second connecting part (5) is provided on the exhaust pipe. An air outlet pipe (28) is provided through the inner shell (26) and the outer shell (21). One end of the air outlet pipe (28) is connected to the end of the second connecting part (5) away from the exhaust pipe. A solenoid valve (29) is provided on the air outlet pipe (28).

5. A PTFE short fiber high-temperature test chamber according to claim 4, characterized in that: The cavity (24) is equipped with two sets of fixing plates (22), and the two sets of bearing plates (23) are slidably disposed on the two sets of fixing plates (22).

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