Ventilation device for high and low temperature test box

Abstract

The utility model relates to the technical field of high and low temperature test boxes, in particular to a high and low temperature test box air interchanger, which comprises a main body, an air inlet structure and an air outlet structure, the main body is fixedly connected with the air interchanger, and the air inlet structure and the air outlet structure are arranged on the outer side of the main body. Each of the air inlet structure and the air outlet structure comprises a guide pipeline and an outer fixing ring which are in threaded connection, a filtering structure is embedded in the guide pipeline, and the whole guide pipeline is in an L shape. Threaded limiting of a limiting support on the outer side of the top of the guiding and conveying pipeline is achieved through an outer fixing ring, meanwhile, the whole filtering structure is limited and fixed in the guiding and conveying pipeline, and the effect of ensuring the stability of an extension plate in the guiding and conveying pipeline is achieved through an inner limiting layer located on the outer side surface of the extension plate. And a sponge cushion layer on the inner side surface of the limiting support is used for assisting the outer fixing ring to carry out threaded limiting on the limiting support.

Description

Technical Field

[0001] The utility model relates to the technical field of high and low temperature test boxes, in particular to a ventilation device for a high and low temperature test box. Background Art

[0002] A high and low temperature test chamber is a device that can simulate high or low temperature environments to perform aging tests on products. Most of them are used in aging tests of electronic products. The equipment is equipped with a test chamber and air intake and exhaust pipes. The temperature in the test chamber can be controlled by the control panel, and the air intake and exhaust can be controlled.

[0003] During the experiment, electronic products will decompose harmful chemicals and odors during long-term high and low temperature alternating aging tests. As the oxygen in the closed environmental test chamber becomes less and less, the product characteristics change. The ventilation volume is set through the instrument, and the upper and lower ventilation valves are opened and closed according to the set requirements to replace the outdoor fresh air into the experimental chamber, and the exhaust gas is discharged from the top, thereby achieving the ventilation effect.

[0004] However, during the air intake or exhaust process, there is no structure in the exhaust pipe to filter the harmful gases and substances in the experimental chamber, and the harmful gases in the experimental chamber cannot be filtered, resulting in direct discharge into the atmosphere, causing pollution to the atmospheric environment, and the filter plate is fixedly installed in the air intake pipe. When replacing the filter plate, the air intake pipe needs to be disassembled, which is troublesome to operate. In response to this problem, the Chinese utility model with application number 202221677819.8 proposes a high and low temperature test chamber ventilation device, in which filter plates are arranged on the air intake pipe and the exhaust pipe on the side wall of the experimental chamber, which can effectively prevent the harmful gases in the test chamber from being directly discharged into the external environment, and the filter plate can be easily disassembled and replaced by rotating the rotating sleeve of the disassembly and assembly mechanism so that the installation slot and the disassembly and assembly slot are aligned.

[0005] However, the problem of the device during use is that the device is not easy to operate when disassembling and assembling the filter structure therein, and the filter structure therein is directly arranged inside the pipeline, and the user needs to use external tools to complete the disassembly and assembly thereof;

[0006] Therefore, the utility model proposes a high and low temperature test box ventilation device. Utility Model Content

[0007] In view of the defects in the prior art, the utility model provides a high and low temperature test chamber ventilation device, which can solve the following problems: the existing high and low temperature test chamber ventilation device has poor operation convenience when disassembling and assembling the filter structure therein, and the filter structure therein is directly arranged inside the pipeline, and the user needs to use external tools to complete the disassembly and assembly thereof.

[0008] In order to solve the above technical problems, the utility model proposes the following technical solutions:

[0009] A high and low temperature test chamber ventilation device includes a fixedly connected main body and an air intake structure and an air outlet structure at the outer side thereof, an experimental cavity is opened inside the main body, a control panel is fixedly arranged on the surface of the main body, the air intake structure and the air outlet structure both include a threaded guide pipe and an external fixing ring, a filtering structure is embedded in the guide pipe, and the guide pipe is arranged in an "L" shape as a whole.

[0010] Furthermore, the filtering structure includes an inner mounting cylinder, a limit seat, a filter box, an extension plate and an outer dustproof plate connected in sequence from top to bottom, the top of the extension plate is fixedly connected to the limit seat, the outer surface of the extension plate is fixedly connected to the inner limit layer, and the inner bottom surface of the limit seat is provided with a mounting groove.

[0011] Furthermore, the inner installation tube is vertically embedded in the vertical section of the guide pipe, and the inner side of the inner installation tube is tapered downwardly closed, and the limit seats are arranged in two groups in the form of arc seats, embedded in both sides of the inner installation tube.

[0012] Furthermore, the mounting groove is configured as an arc-shaped inner groove.

[0013] Furthermore, the filter box is generally circular in shape, with a filter net embedded inside. The filter box is also embedded in the mounting groove. The extension plate is vertically connected to both sides of the top of the filter box. The extension plate is configured as an arc-shaped plate. An arc-shaped groove is provided on the inner top surface of the extension plate, and the outer dustproof plate is embedded in the inner arc-shaped groove of the extension plate.

[0014] Furthermore, the limiting support is arranged in an "L" shape, connected to the extension plate and folded at an angle to cover the top outer side of the guide pipe.

[0015] Furthermore, the outer surface of the limit support is arranged in an arc shape, and threads are arranged at the arc position of the outer surface of the limit support, and the inner surface of the limit support is provided with multiple groups of vertically arranged sponge pads.

[0016] Furthermore, the inner limiting layer is configured as a rubber limiting layer, which is arranged to fit the outer surface of the extension plate and is located inside the vertical section of the guide pipe, fitting the inner wall of the vertical section of the guide pipe.

[0017] Furthermore, the inner surface of the outer fixing ring is also provided with threads corresponding to the threads on the outer surface of the limiting support.

[0018] It can be seen from the above technical solution that the beneficial effects of the utility model are:

[0019] 1. The inner mounting tube is used to facilitate the installation and positioning of the limit seat, and the limit seat cooperates with the mounting groove on the bottom surface to facilitate the support of the filter box and the positioning of the extension plate.

[0020] 2. The filter box is used to filter the airflow, the vertically arranged extension plate is used to facilitate the disassembly and assembly of the entire filter structure inside the guide pipe, the limiting support is used to provide limited support for the entire filter structure on the guide pipe, and the external dustproof plate is used to intercept external dust.

[0021] 3. The thread limit of the limit support is completed on the outside of the top of the guide pipe through the external fixing ring, and the entire filtering structure is limited and fixed inside the guide pipe. The internal limiting layer located on the outer surface of the extension plate is used to ensure the stability of the extension plate inside the guide pipe. The sponge pad layer on the inner surface of the limiting support is used to assist the external fixing ring in thread limiting the limiting support. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0023] Figure 1 It is a front view of the overall structure of the utility model;

[0024] Figure 2 This is a front view of the internal connection of the air inlet and outlet structures in the utility model;

[0025] Figure 3 This is an exploded view of the filter structure connection in the utility model;

[0026] Figure 4 For the utility model Figure 2 A magnified view of the structure at center;

[0027] Figure 5 For the utility model Figure 3 A magnified view of the structure at B in the middle;

[0028] Figure 6 For the utility model Figure 3 Enlarged view of the structure at point C in the middle.

[0029] Reference numerals:

[0030] 1. Main body; 2. Experimental chamber; 3. Control panel; 4. Air intake structure; 5. Air outlet structure; 6. Guide pipe; 7. External fixing ring; 8. Filter structure; 9. Internal mounting cylinder; 10. Limit seat; 11. Filter box; 12. Extension plate; 13. External dustproof plate; 14. Limit support; 15. Internal limit layer; 16. Mounting groove. DETAILED DESCRIPTION

[0031] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0032] See also Figure 1-6 As shown, a high and low temperature test chamber ventilation device includes a fixedly connected main body 1 and an air intake structure 4 and an air outlet structure 5 at the outer side thereof. An experimental chamber 2 is opened inside the main body 1, and a control panel 3 is fixedly arranged on the surface of the main body 1. The air intake structure 4 and the air outlet structure 5 both include a threaded guide pipe 6 and an outer fixed ring 7, and a filter structure 8 is embedded in the guide pipe 6. When the filter structure 8 is disassembled and assembled, the outer fixed ring 7 is rotated to separate it from the limit support 14, and then the user takes out the outer dustproof plate 13 from the inner side of the extension plate 12. Then, the user pulls the extension plate 12 to drive the filter box 11 to be taken out from the inside of the guide pipe 6.

[0033] In the embodiment of the utility model, the filtering structure 8 includes an inner mounting cylinder 9, a limiting seat 10, a filter box 11, an extension plate 12 and an outer dustproof plate 13 which are connected in sequence from top to bottom. The top of the extension plate 12 is fixedly connected to the limiting support 14, and the outer surface of the extension plate 12 is fixedly connected to the inner limiting layer 15. The inner bottom surface of the limiting seat 10 is provided with a mounting groove 16. The mounting cylinder 9 is vertically embedded in the vertical section of the guide pipe 6, and the inner side of the inner mounting cylinder 9 is tapered and closed downward. The limiting seat 10 is provided with two groups of arc-shaped seats, which are embedded in both sides of the inner part of the inner mounting cylinder 9. The mounting groove 16 is set as an arc-shaped inner groove. The inner mounting cylinder 9 is used to facilitate the installation and limitation of the limiting seat 10. The limiting seat 10 cooperates with the mounting groove 16 on its bottom surface to facilitate the support of the filter box 11 and the limitation of the extension plate 12.

[0034] When installing the entire filter structure 8, the user first embeds the limit seat 10 into the inner installation tube 9, and the inner side of the inner installation tube 9 supports and limits the limit seat 10, and then embeds the filter box 11 into the limit seat 10, and the filter box 11 completes the limit engagement in the installation groove 16.

[0035] The filter box 11 is circular as a whole, with a filter screen embedded inside. The filter box 11 is also embedded in the installation groove 16. The extension plate 12 is vertically connected to the two sides of the top of the filter box 11. The extension plate 12 is set as an arc plate. At the same time, the inner top surface of the extension plate 12 is provided with an arc groove. The outer dustproof plate 13 is embedded in the inner arc groove of the extension plate 12. The limiting support 14 is set in an "L" shape, and is connected to the extension plate 12 and covers the top outer side of the guide pipe 6 at an angle. The filter box 11 is used to filter the airflow, and the vertically arranged extension plate 12 is used to facilitate the disassembly and assembly of the entire filter structure 8 inside the guide pipe 6. The limiting support 14 is used to limit and support the entire filter structure 8 on the guide pipe 6, and the external dustproof plate 13 is used to intercept external dust.

[0036] After the filter box 11 is embedded in the limit seat 10 and completed in the installation groove 16, the vertically arranged extension plate 12 is vertically located inside the vertical section of the guide pipe 6, and the limit support 14 is hung and limited at the top position of the vertical section of the guide pipe 6, so that the filter box 11 is supported inside the guide pipe 6.

[0037] During the air inlet and outlet process, the filter box 11 filters the airflow passing through the guide pipe 6 .

[0038] The outer surface of the limit support 14 is arranged in an arc shape, and a thread is arranged at the arc position of the outer surface of the limit support 14. The inner surface of the limit support 14 is provided with multiple groups of vertically arranged sponge pads, and the inner limiting layer 15 is arranged as a rubber limiting layer, which is arranged to fit the outer surface of the extension plate 12 and is located inside the vertical section of the guide pipe 6, fitting the inner wall of the vertical section of the guide pipe 6. The inner surface of the outer fixing ring 7 is provided with threads corresponding to the threads on the outer surface of the limit support 14. The outer fixing ring 7 is used to complete the threaded positioning of the limit support 14 on the outside of the top of the guide pipe 6, and the entire filtering structure 8 is limited and fixed inside the guide pipe 6. The inner limiting layer 15 located on the outer surface of the extension plate 12 is used to ensure the stability of the extension plate 12 inside the guide pipe 6. The sponge pad on the inner surface of the limit support 14 is used to assist the outer fixing ring 7 in threaded positioning of the limit support 14.

[0039] When the filter box 11 is embedded in the vertical section of the guide pipe 6, the extension plate 12 is vertically located inside the vertical section of the guide pipe 6, and the inner limiting layer 15 fits the inner wall of the guide pipe 6, thereby increasing the friction between the extension plate 12 and the inner wall of the guide pipe 6. When the limiting support 14 is threadedly fixed by the outer fixing ring 7, the sponge pad layer 14 on the inner side of the limiting support 14 is forced to contact the top outer surface of the guide pipe 6, which is beneficial to the contact and fixation of the limiting support 14 and the guide pipe 6.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A high and low temperature test chamber ventilation device, comprising a fixedly connected main body (1) and an air inlet structure (4) and an air outlet structure (5) at the outer side thereof, wherein an experimental chamber (2) is provided inside the main body (1), and a control panel (3) is fixedly provided on the surface of the main body (1), characterized in that: The air inlet structure (4) and the air outlet structure (5) both include a threaded guide pipe (6) and an external fixing ring (7), a filter structure (8) is embedded in the guide pipe (6), and the guide pipe (6) is arranged in an "L" shape as a whole.

2. A high and low temperature test chamber ventilation device according to claim 1, characterized in that: The filtering structure (8) comprises an inner mounting cylinder (9), a limiting seat (10), a filtering box (11), an extension plate (12) and an outer dustproof plate (13) which are connected in sequence from top to bottom; the top end of the extension plate (12) is fixedly connected to the limiting seat (14); the outer surface of the extension plate (12) is fixedly connected to the inner limiting layer (15); and the inner bottom surface of the limiting seat (10) is provided with a mounting groove (16).

3. A high and low temperature test chamber ventilation device according to claim 2, characterized in that: The inner installation tube (9) is vertically embedded in the vertical section of the guide pipe (6), and the inner side of the inner installation tube (9) is tapered and closed downwards. The limiting seats (10) are arranged in two groups in the form of arc seats and embedded in both sides of the inner side of the inner installation tube (9).

4. A high and low temperature test chamber ventilation device according to claim 2, characterized in that: The mounting groove (16) is configured as an arc-shaped inner groove.

5. A high and low temperature test chamber ventilation device according to claim 2, characterized in that: The filter box (11) is arranged in a circular shape as a whole, and a filter screen is embedded inside. The filter box (11) is also embedded in the installation groove (16). The extension plate (12) is vertically connected to both sides of the top of the filter box (11). The extension plate (12) is arranged as an arc-shaped plate, and an arc-shaped groove is arranged on the inner top surface of the extension plate (12). The outer dustproof plate (13) is embedded in the inner arc-shaped groove of the extension plate (12).

6. A high and low temperature test chamber ventilation device according to claim 2, characterized in that: The position limiting support (14) is arranged in an "L" shape, connected to the extension plate (12) and at the same time folded to cover the top outer side of the guide pipe (6).

7. A high and low temperature test chamber ventilation device according to claim 6, characterized in that: The outer surface of the limiting support (14) is arranged in an arc shape, and threads are arranged at the arc position of the outer surface of the limiting support (14). The inner surface of the limiting support (14) is provided with multiple groups of vertically arranged sponge cushion layers.

8. A high and low temperature test chamber ventilation device according to claim 2, characterized in that: The inner limiting layer (15) is configured as a rubber limiting layer, which is arranged to fit the outer surface of the extension plate (12) and is located inside the vertical section of the guide pipe (6) and fits the inner wall of the vertical section of the guide pipe (6).

9. A high and low temperature test chamber ventilation device according to claim 1, characterized in that: The inner surface of the outer fixing ring (7) is also provided with threads corresponding to the threads on the outer surface of the limiting support (14).

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