Case for testing sensitivity of gas detector
By designing a detachable sealing assembly and magnetic suction structure, the problem of the sealing strip deforming after a long period of pressure is solved, and the stability and accuracy of the gas detector test are achieved.
Patent Information
- Application Number
- CN202421393262.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-06-18
AI Technical Summary
The sealant strip is prone to permanent deformation after being pressed for a long time, affecting the sealing performance and accuracy of the gas detector test.
Using a sealing assembly, including a first fixing block, a second fixing block, a connecting block, a first spring, a wedge block and a push rod, the removable fixation of the sealing strip is achieved through the fitting connection of the wedge block and the wedge groove, and the magnetic suction groove is used to ensure precise positioning and uniform sealing of the sealing strip, and the built-in spring provides telescopicity to reduce deformation.
It realizes convenient replacement of seal strips and long-term stable sealing effect, prevents permanent deformation, and ensures the accuracy and stability of gas detector testing.
Smart Images
Figure CN223192904U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of testing equipment, in particular to a chassis for testing the sensitivity of a gas detector. Background Art
[0002] A gas detector is an instrument designed to detect specific gas types and their concentrations. The chassis used to test the sensitivity of gas detectors is designed to simulate the performance of gas detectors under different environmental conditions in order to evaluate and calibrate their response to specific gas concentrations.
[0003] The existing Chinese patent application number CN202023231678.0 discloses a chassis for testing the sensitivity of a gas detector, comprising a box body, a box lid, and an annular sealing strip. The outer wall of the box body is provided with a through hole, and a rubber ring is embedded in the through hole; the box lid is movably connected to the box body, and the box lid is also provided with a locking assembly, which is provided with a lock tongue that can be locked to the box body; the annular sealing strip is provided on the inner side of the box lid to seal the gap between the box body and the box lid. The chassis for testing the sensitivity of a gas detector can provide a good sealing environment for testing the gas detector, preventing external gases from interfering with the test, and can make the gas detector test more accurate, convenient and fast.
[0004] In the above technology, a sealing strip is used to seal the gap between the box body and the box cover to improve the sealing effect. However, after long-term use, the sealing strip is prone to permanent deformation under long-term pressure, which can easily affect its sealing performance and cause air leakage, thereby affecting the accuracy and stability of the gas detector test. Utility Model Content
[0005] The purpose of the utility model is to provide a chassis for testing the sensitivity of a gas detector. By adopting the device to work, the problem that a sealing strip is prone to permanent deformation under long-term pressure, thereby easily affecting its sealing performance is solved.
[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a chassis for testing the sensitivity of a gas detector, comprising a box body, a mounting plate movably arranged inside the box body, an air inlet provided at the top end of the box body, an air outlet provided at the bottom end of the box body, and a box cover hinged to one side of the box body, a first limiting groove provided on the inside of the box body, and a sealing assembly provided on the inside of the box cover for improving the sealing effect;
[0007] The sealing assembly includes a sealing strip, a first fixed block fixedly connected to the inner side of the sealing strip, a second fixed block fixedly connected to the inner side of the box cover, a connecting block movably connected between the first fixed block and the second fixed block, a first spring arranged inside the connecting block, a wedge block fixedly connected to one end of the first spring, and a push rod passing through the second fixed block, a fixed opening is provided on one side of the first fixed block, a fixed groove is provided on one side of the second fixed block, the fixed opening and the fixed groove are both arranged corresponding to the connecting block, a first cavity is provided inside the connecting block, the first spring is fixedly connected to the inner wall of the first cavity, a wedge groove and a slide groove are provided inside the second fixed block, the wedge block and the wedge groove are arranged correspondingly, the wedge groove, the slide groove and the fixed groove are all connected, the push rod passes through the slide groove, and the wedge block passes through the first cavity.
[0008] Furthermore, a second limiting groove is provided on the inner side of the box cover, and the first limiting groove and the second limiting groove are both provided corresponding to the sealing strip.
[0009] Furthermore, a placement opening is provided inside the box body, and the placement opening is communicated with the first limiting groove.
[0010] Furthermore, a second cavity is defined inside the sealing strip, and a second spring is fixedly connected inside the second cavity.
[0011] Furthermore, a connecting groove is opened inside the box body, a first magnetic block is fixedly connected inside the connecting groove, a second magnetic block is fixedly connected inside the box cover, and the first magnetic block is magnetically aligned with the second magnetic block.
[0012] Furthermore, an observation opening is provided on the outside of the box cover, and an acrylic plate is fixedly connected to the inside of the observation opening.
[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0014] The utility model proposes a chassis for testing the sensitivity of a gas detector, which brings the first fixing block into contact with the second fixing block and passes the connecting block through the fixing opening. At this time, the first spring is in a compressed state due to the pressure of the inner wall of the fixing opening. At this time, the wedge block is located inside the first cavity and continuously pushes the connecting block so that the connecting block is engaged and connected with the fixing groove. At this time, the pressure exerted on the first spring disappears, and under the reaction of the first spring, the wedge block is pushed out of the first cavity and engaged and connected with the wedge groove, and the first fixing block is fixed to the second fixing block, thereby fixing the sealing strip to the box cover. When the sealing strip needs to be removed, the push rod is pushed so that the push rod passes through the sliding groove and contacts the wedge block, and the wedge block is continuously pushed to return to the first cavity. At this time, the connecting block is pulled to make the connecting block leave the fixing groove and the fixing opening in turn, thereby facilitating the separation of the sealing strip from the box cover to replace the sealing strip, thereby solving the problem that the sealing strip is prone to permanent deformation when under pressure for a long time, thereby easily affecting its sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the box structure of the utility model;
[0017] Figure 3 This is a schematic diagram of the sealing assembly, acrylic plate, second magnetic block and second limiting groove structure of the utility model;
[0018] Figure 4 This is a schematic structural diagram of the connecting block, the first spring, and the wedge block of the present invention;
[0019] Figure 5 This is a schematic diagram of the internal structure of the push rod and the second fixed block of the utility model.
[0020] In the figure: 1. Box body; 11. First limiting groove; 12. Connecting groove; 13. Placement port; 2. Box cover; 21. Second limiting groove; 22. Observation port; 3. Sealing assembly; 31. Sealing strip; 32. First fixing block; 321. Fixed port; 33. Second fixing block; 331. Fixed groove; 332. Wedge-shaped groove; 333. Slide groove; 34. Connecting block; 341. First cavity; 35. First spring; 36. Wedge-shaped block; 37. Push rod; 4. Acrylic plate; 5. Second magnetic block; 6. Mounting plate. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.
[0023] Combine Figure 1-Figure 2 A chassis for testing the sensitivity of a gas detector includes a box body 1, a mounting plate 6 movably arranged inside the box body 1, an air inlet opened at the top end of the box body 1, an air outlet opened at the bottom end of the box body 1, and a box cover 2 hinged to one side of the box body 1, a first limiting groove 11 is opened on the inner side of the box body 1, and a sealing component 3 for improving the sealing effect is provided on the inner side of the box cover 2.
[0024] The present invention will be further described below with reference to the embodiments.
[0025] Example 1:
[0026] See also Figure 2-Figure 5 The sealing assembly 3 includes a sealing strip 31, a first fixing block 32 fixedly connected to the inner side of the sealing strip 31, a second fixing block 33 fixedly connected to the inner side of the box cover 2, a connecting block 34 movably connected between the first fixing block 32 and the second fixing block 33, a first spring 35 arranged inside the connecting block 34, a wedge block 36 fixedly connected to one end of the first spring 35, and a push rod 37 passing through the second fixing block 33. A fixing opening 321 is opened on one side of the first fixing block 32, and the second fixing block 33 is provided with a fixing opening 321. A fixing groove 331 is provided on one side, and the fixing opening 321 and the fixing groove 331 are both arranged corresponding to the connecting block 34. A first cavity 341 is provided inside the connecting block 34, and the first spring 35 is fixedly connected to the inner wall of the first cavity 341. A wedge-shaped groove 332 and a slide groove 333 are provided inside the second fixing block 33, and the wedge block 36 is arranged corresponding to the wedge groove 332. The wedge groove 332, the slide groove 333 and the fixing groove 331 are all connected. The push rod 37 passes through the slide groove 333, and the wedge block 36 passes through the first cavity The first fixing block 32 is brought into contact with the second fixing block 33, and the connecting block 34 is passed through the fixing opening 321. At this time, the first spring 35 is compressed by the pressure of the inner wall of the fixing opening 321. At this time, the wedge block 36 is located inside the first cavity 341 and continuously pushes the connecting block 34 so that the connecting block 34 is engaged with the fixing groove 331. At this time, the pressure on the first spring 35 disappears, and under the reaction of the first spring 35, the wedge block 36 is pushed out of the first cavity 341 and is engaged with the wedge groove 331. 32 is engaged and connected to fix the first fixing block 32 and the second fixing block 33, thereby fixing the sealing strip 31 to the box cover 2. When the sealing strip 31 needs to be removed, the push rod 37 is pushed to make the push rod 37 pass through the slide groove 333 and contact the wedge block 36, and the wedge block 36 is continuously pushed to return it to the first cavity 341. At this time, the connecting block 34 is pulled to make the connecting block 34 leave the fixing groove 331 and the fixing opening 321 in turn, thereby facilitating the separation of the sealing strip 31 from the box cover 2 and replacing the sealing strip 31.
[0027] A second limiting groove 21 is provided on the inner side of the box cover 2, and the first limiting groove 11 and the second limiting groove 21 are both arranged corresponding to the sealing strip 31. Through the corresponding arrangement of the first limiting groove 11 and the second limiting groove 21, the sealing strip 31 is ensured to be accurately positioned between the box body 1 and the box cover 2 during installation to prevent displacement or misalignment, thereby facilitating uniform and effective sealing.
[0028] A placement opening 13 is provided on the inner side of the box body 1, and the placement opening 13 is connected to the first limiting groove 11. When the sealing strip 31 is engaged with the first limiting groove 11 and the second limiting groove 21, the first fixing block 32 and the second fixing block 33 are located at the placement opening 13, which facilitates the effective utilization of the non-critical space inside the box body 1.
[0029] A second cavity is defined inside the sealing strip 31, and a second spring is fixedly connected to the inside of the second cavity. The presence of the second spring allows the sealing strip 31 to have a certain degree of elasticity, making it easy to automatically adjust the compression amount of the sealing strip 31 according to the specific pressure when the box cover 2 and the box body 1 are closed. Under the action of the second spring, the permanent deformation of the sealing strip 31 caused by long-term compression is reduced, thereby extending the service life of the sealing strip 31.
[0030] A connecting groove 12 is provided on the inner side of the box body 1, and a first magnetic block is fixedly connected to the inside of the connecting groove 12. A second magnetic block 5 is fixedly connected to the inner side of the box cover 2. The first magnetic block and the second magnetic block 5 have opposite magnetic properties. Based on the principle that opposite magnets attract each other, when the box cover 2 approaches the box body 1, the first magnetic block and the second magnetic block 5 will naturally attract each other, guiding the box cover 2 to accurately align and easily close, while providing additional extrusion force for the sealing strip 31, further improving the sealing effect.
[0031] An observation port 22 is provided on the outside of the box cover 2, and an acrylic plate 4 is fixedly connected to the inside of the observation port 22. Through the observation port 22 and the transparent acrylic plate 4, the user is provided with a way to directly observe the working status or test progress of the internal gas detector without opening the cover.
[0032] When in use, the mounting plate 6 is used to place the gas detector, the first fixing block 32 is brought into contact with the second fixing block 33, and the connecting block 34 is passed through the fixing opening 321. At this time, the first spring 35 is in a compressed state due to the pressure of the inner wall of the fixing opening 321. At this time, the wedge block 36 is located inside the first cavity 341, and continuously pushes the connecting block 34 so that the connecting block 34 is engaged with the fixing groove 331. At this time, the pressure on the first spring 35 disappears, and under the reaction of the first spring 35, the wedge block 36 is pushed out of the first cavity 341 and engaged with the wedge groove 332, fixing the first fixing block 32 with the second fixing block 33, thereby fixing the sealing strip 31 to the box cover 2, closing the box cover 2, and when the box cover 2 is close When the box body 1 is opened, the first magnetic block and the second magnetic block 5 will be naturally attracted to guide the box cover 2 to be accurately aligned and easily closed. At this time, the sealing strip 31 is precisely positioned between the box body 1 and the box cover 2, so as to achieve uniform and effective sealing. When the sealing strip 31 has been used for a long time and needs to be replaced, the push rod 37 is pushed to make the push rod 37 pass through the slide groove 333 and contact the wedge block 36, and the wedge block 36 is continuously pushed to return it to the first cavity 341. At this time, the connecting block 34 is pulled to make the connecting block 34 leave the fixing groove 331 and the fixing opening 321 in turn, so as to facilitate the separation of the sealing strip 31 from the box cover 2 to replace the sealing strip 31 and prevent the sealing strip 31 from being used for a long time and affecting its sealing performance.
[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A case for testing the sensitivity of a gas detector, comprising a case (1), a mounting plate (6) movably arranged inside the case (1), an air inlet provided at the top end of the case (1), an air outlet provided at the bottom end of the case (1), and a cover (2) hinged to one side of the case (1), characterized in that: A first limiting groove (11) is provided on the inner side of the box body (1), and a sealing component (3) for improving the sealing effect is provided on the inner side of the box cover (2); The sealing assembly (3) comprises a sealing strip (31), a first fixed block (32) fixedly connected to the inner side of the sealing strip (31), a second fixed block (33) fixedly connected to the inner side of the box cover (2), a connecting block (34) movably connected between the first fixed block (32) and the second fixed block (33), a first spring (35) arranged inside the connecting block (34), a wedge block (36) fixedly connected to one end of the first spring (35), and a push rod (37) passing through the second fixed block (33), a fixed opening (321) is opened on one side of the first fixed block (32), and a fixed opening (322) is opened on one side of the second fixed block (33). A fixing groove (331) is provided. The fixing opening (321) and the fixing groove (331) are both arranged corresponding to the connecting block (34). A first cavity (341) is provided inside the connecting block (34). The first spring (35) is fixedly connected to the inner wall of the first cavity (341). A wedge-shaped groove (332) and a sliding groove (333) are provided inside the second fixing block (33). The wedge-shaped block (36) is arranged corresponding to the wedge-shaped groove (332). The wedge-shaped groove (332), the sliding groove (333) and the fixing groove (331) are all connected. The push rod (37) passes through the sliding groove (333). The wedge-shaped block (36) passes through the first cavity (341).
2. A chassis for testing the sensitivity of a gas detector according to claim 1, characterized in that: A second limiting groove (21) is provided on the inner side of the box cover (2), and both the first limiting groove (11) and the second limiting groove (21) are arranged corresponding to the sealing strip (31).
3. A chassis for testing the sensitivity of a gas detector according to claim 2, characterized in that: A placement opening (13) is provided on the inner side of the box body (1), and the placement opening (13) is communicated with the first limiting groove (11).
4. A chassis for testing the sensitivity of a gas detector according to claim 3, characterized in that: A second cavity is provided inside the sealing strip (31), and a second spring is fixedly connected inside the second cavity.
5. The chassis for testing the sensitivity of a gas detector according to claim 1, characterized in that: A connecting groove (12) is provided on the inner side of the box body (1), a first magnetic block is fixedly connected inside the connecting groove (12), and a second magnetic block (5) is fixedly connected on the inner side of the box cover (2), and the first magnetic block and the second magnetic block (5) have opposite magnetic properties.
6. The chassis for testing the sensitivity of a gas detector according to claim 1, characterized in that: An observation opening (22) is provided on the outside of the box cover (2), and an acrylic plate (4) is fixedly connected to the inside of the observation opening (22).