Air tightness detection device for rubber and plastic heat insulation material

Abstract

The utility model discloses an air tightness detection device for a rubber and plastic heat insulation material. The air tightness detection device comprises a shell and a sealing clamp, a supporting frame is arranged on the upper surface of the shell, an air compressor is arranged in the shell, an air pipe is arranged at an air outlet of the air compressor, a single-chip microcomputer is arranged at the front end of the shell, the input end of the single-chip microcomputer is electrically connected to an external power source, and the input end of the air compressor is electrically connected to the output end of the single-chip microcomputer; the sealing clamps are arranged at the upper end of the supporting frame and the middle of the shell respectively, the lower ends of the sealing clamps are communicated with the air pipe, and air pressure sensors are arranged in the sealing clamps. The sealing conditions of the rubber and plastic heat insulation material under different conditions are judged, and the accuracy and efficiency of the air tightness detection result of the rubber and plastic heat insulation material are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection of rubber and plastic thermal insulation materials, in particular to an air tightness detection device for rubber and plastic thermal insulation materials. Background Art

[0002] Rubber-plastic thermal insulation material is an insulating material made of rubber and plastic. It is mainly composed of a rubber or plastic base material and a certain proportion of various fillers, additives, modifiers, etc. This material has excellent insulation, heat insulation, waterproof and other properties. According to the main components of the material, rubber-plastic thermal insulation material can be divided into rubber thermal insulation material and plastic thermal insulation material. It is widely used in various fields such as construction, machinery, automobiles, electronics, etc. In the production process of rubber-plastic thermal insulation material, in order to ensure the product quality of rubber-plastic thermal insulation material, various tests need to be carried out on the rubber-plastic thermal insulation material, among which airtightness test is the most important test of rubber-plastic thermal insulation material. An important part of material quality detection; in the prior art, during the air tightness detection process, the rubber and plastic thermal insulation material is assembled on a sealing fixture of a certain size, and the gas at a certain pressure and flow rate is controlled to pass into the sealing fixture, and then the gas leakage situation and the leakage rate are observed to judge the air tightness of the rubber and plastic thermal insulation material. However, the setting of the detection air pressure and the installation of the rubber and plastic thermal insulation material need to be carried out before the detection begins, which makes it inconvenient to change the air pressure and installation conditions during the detection process, and it is inconvenient to judge the sealing situation of the rubber and plastic thermal insulation material under different conditions, affecting the accuracy of the air tightness detection of the rubber and plastic thermal insulation material. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an airtightness detection device for rubber-plastic thermal insulation materials, which can conveniently and accurately change the air pressure conditions and installation conditions during the detection process of rubber-plastic thermal insulation materials, judge the sealing conditions of rubber-plastic thermal insulation materials under different conditions, improve the accuracy and efficiency of the airtightness detection results of rubber-plastic thermal insulation materials, and effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air tightness detection device for rubber and plastic thermal insulation materials, comprising a housing and a sealing fixture;

[0005] Shell: A support frame is provided on its upper surface, an air compressor is provided inside the shell, an air pipe is provided at the air outlet of the air compressor, a single-chip microcomputer is provided at the front end of the shell, the input end of the single-chip microcomputer is electrically connected to an external power supply, and the input end of the air compressor is electrically connected to the output end of the single-chip microcomputer;

[0006] Sealing fixture: respectively arranged at the upper end of the support frame and the middle part of the shell, the lower end of the sealing fixture is connected with the air pipe, an air pressure sensor is arranged inside the sealing fixture, the output end of the air pressure sensor is electrically connected to the input end of the single-chip microcomputer, by adjusting the expansion and contraction amplitude of the spring and the expansion and contraction length of the electric push rod 2, the air pressure conditions and installation conditions in the process of rubber and plastic thermal insulation material detection can be conveniently and accurately changed, the sealing conditions of the rubber and plastic thermal insulation materials under different conditions can be judged, and the accuracy and efficiency of the air tightness detection results of the rubber and plastic thermal insulation materials can be improved.

[0007] Furthermore, the sealing clamp includes an electric push rod, an upper splint, a lower splint and a hollow tube. The electric push rod is arranged at the upper end of the support frame, and the upper splint is installed at the lower end of the telescopic end of the electric push rod. The hollow tube is arranged in the middle of the shell, and the lower end of the hollow tube is connected with the air pipe. The upper end of the hollow tube is provided with a lower splint, and the lower splint is a hollow cylinder with an opening at the upper end. An air pressure sensor is provided inside the lower splint. The input end of the electric push rod is electrically connected to the output end of the single-chip microcomputer to clamp the rubber and plastic insulation material.

[0008] Furthermore, the sealing clamp also includes a horizontal plate 1, a guide column, a spring and a horizontal plate 2. The horizontal plate 1 is arranged at the lower end of the telescopic end of the electric push rod 1. The left and right ends of the horizontal plate 1 are vertically slidably connected with the guide column. A horizontal plate 2 is arranged between the lower ends of the guide columns. Springs are respectively arranged between the horizontal plate 2 and the horizontal plate 1. The springs are respectively movably mounted on the outer arc surface of the guide column to control the clamping force of the rubber-plastic insulation material.

[0009] Furthermore, the sealing fixture also includes an electric push rod 2, which is arranged at the lower end of the hollow tube. A sealing plate is provided at the upper end of the telescopic end of the electric push rod 2, and the sealing plate is fitted with the inner arc surface of the hollow tube. The input end of the electric push rod 2 is electrically connected to the output end of the single-chip microcomputer to adjust the detection air pressure of the rubber and plastic insulation material.

[0010] Furthermore, a solenoid valve is connected in series in the middle of the air pipe, and the input end of the solenoid valve is electrically connected to the output end of the single-chip microcomputer to control the circulation of compressed air in the air pipe.

[0011] Furthermore, a distance measuring sensor is provided on the lower surface of the horizontal plate 1, and the output end of the distance measuring sensor is electrically connected to the input end of the single chip microcomputer to detect the expansion and contraction amplitude of the spring.

[0012] Furthermore, a sealing rubber pad is provided on the surface of the sealing plate at the upper end of the second electric push rod to improve the sealing effect of the sealing plate at the upper end of the second electric push rod.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the air tightness detection device for rubber and plastic insulation materials has the following advantages:

[0014] The rubber-plastic thermal insulation material is clamped by the cooperation of the upper clamping plate and the lower clamping plate, and the upper end opening of the lower clamping plate is sealed by utilizing the air tightness of the rubber-plastic thermal insulation material. The solenoid valve is opened by the single-chip microcomputer to allow compressed air to enter the hollow tube and the lower clamping plate. The air pressure inside the lower clamping plate is detected by the air pressure sensor. The air tightness of the rubber-plastic thermal insulation material is determined by whether the air pressure is reduced. During the air tightness detection process, the electric push rod 2 can be started to adjust the air pressure inside the lower clamping plate to determine the sealing effect of the rubber-plastic thermal insulation material under different air pressures; the electric push rod 1 can also be started again to utilize the elastic force of the spring to exert a force on the rubber-plastic thermal insulation material so that the contact between the rubber-plastic thermal insulation material and the clamping mold is closer, and the sealing effect of the rubber-plastic thermal insulation material under different installation conditions is detected. By adjusting the expansion and contraction amplitude of the spring and the expansion and contraction length of the electric push rod 2, the air pressure conditions and installation conditions in the detection process of the rubber-plastic thermal insulation material are conveniently and accurately changed to determine the sealing conditions of the rubber-plastic thermal insulation material under different conditions, thereby improving the accuracy and efficiency of the air tightness detection results of the rubber-plastic thermal insulation material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the front view section of the overall device of the utility model.

[0017] In the figure: 1 housing, 2 support frame, 3 sealing fixture, 31 electric push rod 1, 32 upper clamp, 33 lower clamp, 34 hollow tube, 35 horizontal plate 1, 36 guide column, 37 spring, 38 horizontal plate 2, 39 electric push rod 2, 4 air compressor, 5 air pipe, 6 solenoid valve, 7 air pressure sensor, 8 single chip microcomputer, 9 distance sensor, 10 sealing pad. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-2 , This embodiment provides a technical solution: an airtightness detection device for rubber and plastic insulation materials, including a housing 1 and a sealing fixture 3;

[0020] Shell 1: A support frame 2 is provided on its upper surface to provide support for the setting of the detection component. An air compressor 4 is provided inside the shell 1 to provide compressed air for the air tightness detection of the rubber and plastic insulation material. An air pipe 5 is provided at the air outlet of the air compressor 4 to transport the compressed air. A single-chip microcomputer 8 is provided at the front end of the shell 1 to control the start and stop of the entire device. The input end of the single-chip microcomputer 8 is electrically connected to an external power supply, and the input end of the air compressor 4 is electrically connected to the output end of the single-chip microcomputer 8. A solenoid valve 6 is connected in series in the middle of the air pipe 5. The input end of the solenoid valve 6 is electrically connected to the output end of the single-chip microcomputer 8 to control whether the compressed air flows in the air pipe 5.

[0021] Sealing fixture 3: respectively arranged at the upper end of the support frame 2 and the middle of the shell 1, the lower end of the sealing fixture 3 is connected to the air pipe 5, an air pressure sensor 7 is arranged inside the sealing fixture 3, and the output end of the air pressure sensor 7 is electrically connected to the input end of the single-chip computer 8, the sealing fixture 3 includes an electric push rod 31, an upper clamping plate 32, a lower clamping plate 33 and a hollow tube 34, the electric push rod 31 is arranged at the upper end of the support frame 2, the lower end of the telescopic end of the electric push rod 31 is installed with an upper clamping plate 32, the hollow tube 34 is arranged in the middle of the shell 1, the lower end of the hollow tube 34 is connected to the air pipe 5, the upper end of the hollow tube 34 is provided with a lower clamping plate 33, the lower clamping plate 33 is a hollow cylinder with an upper end opening, the lower clamping plate 33 is provided with an air pressure sensor 7, the input end of the electric push rod 31 The end is electrically connected to the output end of the single-chip computer 8, the rubber-plastic insulation material is placed on the surface of the lower clamping plate 33, the electric push rod 1 31 is started, the extension of the electric push rod 1 31 drives the upper clamping plate 32 to move downward, and the rubber-plastic insulation material is clamped by the cooperation of the upper clamping plate 32 and the lower clamping plate 33. The rubber-plastic insulation material is used to seal the upper end opening of the lower clamping plate 33 to prevent the compressed air inside the lower clamping plate 33 from leaking. The air pressure inside the lower clamping plate 33 is detected by the air pressure sensor 7. The air tightness of the rubber-plastic insulation material is judged by whether the air pressure is reduced. The sealing fixture 3 also includes a horizontal plate 1 35, a guide column 36, a spring 37 and a horizontal plate 2 38. The horizontal plate 1 35 is arranged at the lower end of the extension end of the electric push rod 1 31, and the left and right ends of the horizontal plate 1 35 are vertical A guide column 36 is slidably connected, a horizontal plate 2 38 is provided between the lower ends of the guide columns 36, and a spring 37 is provided between the horizontal plate 2 38 and the horizontal plate 1 35. The springs 37 are movably sleeved on the outer arc surface of the guide column 36. During the air tightness detection process, the electric push rod 1 31 is started again to overcome the elastic force of the spring 37, so that the horizontal plate 1 35 and the guide column 36 rotate relative to each other. Under the elastic force of the spring 37, the force applied by the upper clamping plate 32 to the rubber-plastic insulation material is increased, so that the contact between the rubber-plastic insulation material and the clamping mold is closer, and the sealing effect of the rubber-plastic insulation material under different installation conditions is detected. The sealing fixture 3 also includes an electric push rod 2 39, which is arranged at the lower end of the hollow tube 34, and the upper end of the telescopic end of the electric push rod 2 39 A sealing plate is provided, which fits the inner arc surface of the hollow tube 34. The input end of the electric push rod 39 is electrically connected to the output end of the single-chip microcomputer 8. When the electric push rod 39 is started, the telescopic end of the electric push rod 39 drives the sealing plate and the sealing pad 10 to move upward, thereby reducing the storage space of the compressed gas inside the hollow tube 34, further compressing the air, and increasing the air pressure inside the lower clamping plate 33. The sealing effect of the rubber-plastic insulation material under different air pressures is judged. A distance sensor 9 is provided on the lower surface of the horizontal plate 1 35. The output end of the distance sensor 9 is electrically connected to the input end of the single-chip microcomputer 8 to detect the telescopic amplitude of the spring 37. A sealing pad 10 is provided on the surface of the sealing plate at the upper end of the electric push rod 39 to enhance the sealing effect of the sealing plate at the upper end of the electric push rod 39.

[0022] The working principle of the air tightness detection device for rubber-plastic thermal insulation materials provided by the utility model is as follows: when in use, the rubber-plastic thermal insulation material is placed on the surface of the lower clamping plate 33, and the electric push rod 31 is started by the single-chip microcomputer 8. The extension and contraction of the electric push rod 31 drives the upper clamping plate 32 to move downward, and the rubber-plastic thermal insulation material is clamped by the cooperation of the upper clamping plate 32 and the lower clamping plate 33. The air tightness of the rubber-plastic thermal insulation material is used to seal the upper end opening of the lower clamping plate 33, and then the solenoid valve 6 is opened to allow the compressed air generated by the air compressor 4 to enter the hollow tube 34 and the lower clamping plate 33. The air pressure sensor 7 is used to detect the air pressure inside the lower clamping plate 33. When the air pressure inside the lower clamping plate 33 reaches a specified value, the solenoid valve 6 is closed, and the air pressure is measured by whether it is reduced. , judge the air tightness of the rubber-plastic thermal insulation material. During the air tightness detection process, the electric push rod 2 39 can be started. The telescopic end of the electric push rod 2 39 drives the sealing plate and the sealing rubber pad 10 to move upward, so that the storage space of the compressed gas inside the hollow tube 34 is reduced, the air is further compressed, and the air pressure inside the lower clamping plate 33 increases, and the sealing effect of the rubber-plastic thermal insulation material under different air pressures is judged; the electric push rod 1 31 can also be started again to overcome the elastic force of the spring 37, so that the cross plate 1 35 and the guide column 36 rotate relative to each other. Under the elastic force of the spring 37, the force applied by the upper clamping plate 32 to the rubber-plastic thermal insulation material is increased, so that the contact between the rubber-plastic thermal insulation material and the clamping mold is closer, and the sealing effect of the rubber-plastic thermal insulation material under different installation conditions is detected.

[0023] It is worth noting that the single-chip microcomputer 8 disclosed in the above embodiment can use the AT89C4051 model single-chip microcomputer, and the air compressor 4, the air pressure sensor 7, the electric push rod 1 31, the electric push rod 2 39, the solenoid valve 6 and the distance sensor 9 can be freely configured according to the actual application scenario. The air compressor 4 can use the DR5012-55 model air compressor, the air pressure sensor 7 can use the S-BPB-CM50 model air pressure sensor, the electric push rod 1 31 and the electric push rod 2 39 can both use the LAM1 model electric push rod, the solenoid valve 6 can use the HOPE73 model electromagnetic air valve, and the distance sensor 9 can use the T150HJG-CGQ model reflective laser distance sensor. The single-chip microcomputer 8 controls the air compressor 4, the air pressure sensor 7, the electric push rod 1 31, the electric push rod 2 39, the solenoid valve 6 and the distance sensor 9 to work, all of which adopt the methods commonly used in the prior art.

[0024] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. The air tightness detection device for rubber and plastic insulation materials is characterized by: It comprises a housing (1) and a sealing fixture (3); A housing (1) having a support frame (2) on its upper surface, an air compressor (4) arranged inside the housing (1), an air pipe (5) arranged at the air outlet of the air compressor (4), a single-chip microcomputer (8) arranged at the front end of the housing (1), an input end of the single-chip microcomputer (8) electrically connected to an external power supply, and an input end of the air compressor (4) electrically connected to an output end of the single-chip microcomputer (8); A sealing fixture (3) is respectively arranged at the upper end of the support frame (2) and the middle part of the housing (1); the lower end of the sealing fixture (3) is connected to the air pipe (5); an air pressure sensor (7) is arranged inside the sealing fixture (3); the output end of the air pressure sensor (7) is electrically connected to the input end of the single chip computer (8).

2. The air tightness detection device for rubber-plastic insulation materials according to claim 1 is characterized in that: The sealing fixture (3) comprises an electric push rod (31), an upper clamping plate (32), a lower clamping plate (33) and a hollow tube (34). The electric push rod (31) is arranged at the upper end of the support frame (2). The upper clamping plate (32) is installed at the lower end of the telescopic end of the electric push rod (31). The hollow tube (34) is arranged in the middle of the shell (1). The lower end of the hollow tube (34) is connected to the air pipe (5). The upper end of the hollow tube (34) is provided with a lower clamping plate (33). The lower clamping plate (33) is a hollow cylinder with an open upper end. An air pressure sensor (7) is provided inside the lower clamping plate (33). The input end of the electric push rod (31) is electrically connected to the output end of the single-chip computer (8).

3. The air tightness detection device for rubber-plastic insulation materials according to claim 2 is characterized in that: The sealing fixture (3) further comprises a transverse plate 1 (35), a guide column (36), a spring (37) and a transverse plate 2 (38); the transverse plate 1 (35) is arranged at the lower end of the telescopic end of the electric push rod 1 (31); both left and right ends of the transverse plate 1 (35) are vertically slidably connected with the guide column (36); a transverse plate 2 (38) is arranged between the lower ends of the guide column (36); springs (37) are respectively arranged between the transverse plate 2 (38) and the transverse plate 1 (35); and the springs (37) are respectively movably sleeved on the outer arc surface of the guide column (36).

4. The air tightness detection device for rubber-plastic insulation materials according to claim 2 is characterized in that: The sealing fixture (3) also includes an electric push rod (39), which is arranged at the lower end of the hollow tube (34). A sealing plate is provided at the upper end of the telescopic end of the electric push rod (39), and the sealing plate is in contact with the inner arc surface of the hollow tube (34). The input end of the electric push rod (39) is electrically connected to the output end of the single-chip computer (8).

5. The air tightness detection device for rubber-plastic insulation materials according to claim 1 is characterized in that: A solenoid valve (6) is connected in series in the middle of the air pipe (5), and an input end of the solenoid valve (6) is electrically connected to an output end of the single chip computer (8).

6. The air tightness detection device for rubber-plastic insulation materials according to claim 3 is characterized in that: A distance measuring sensor (9) is provided on the lower surface of the horizontal plate (35), and the output end of the distance measuring sensor (9) is electrically connected to the input end of the single chip computer (8).

7. The air tightness detection device for rubber-plastic insulation materials according to claim 4 is characterized in that: A sealing rubber pad (10) is provided on the surface of the sealing plate at the upper end of the second electric push rod (39).

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