Air resistance testing device

Abstract

The utility model relates to an air resistance testing device. The air resistance testing device comprises a base; the driving piece is arranged on the base and is provided with a first driving end and a second driving end; the first test piece is arranged on the first driving end, the first test piece comprises a first sealing piece, the first sealing piece is hollow, and one side of the first sealing piece is open; the second test piece is arranged on the second driving end, the second test piece comprises a second sealing piece, the second sealing piece is hollow, an opening is formed in one side of the second sealing piece, and the opening of the second sealing piece is opposite to the opening of the first sealing piece; and the driving piece can drive the first test piece and the second test piece to move oppositely and enable the first sealing piece and the second sealing piece to be matched to clamp and seal the to-be-tested product, or drive the first test piece and the second test piece to move reversely to loosen the to-be-tested product. The air resistance testing device is simple and reasonable in structure, and detection results can be rapidly and accurately obtained through simple and convenient operation.

Description

Technical Field

[0001] The utility model relates to the technical field of product air resistance testing, in particular to an air resistance testing device. Background Art

[0002] In order to ensure the service performance of products, air resistance tests are usually carried out on some products, such as masks, clothes, tents, filter cloths, etc.

[0003] At present, the operation steps of the air resistance testing devices on the market are relatively cumbersome, and professional technical personnel are required to operate and interpret the results. The test results are closely related to the professional qualities of the technical personnel. For products with different materials, shapes or sizes, testing devices with different structures need to be used. Therefore, the existing air resistance testing devices cannot quickly and accurately obtain the test results. Summary of the Utility Model

[0004] Based on this, in view of the problem that the existing air resistance testing devices cannot quickly and accurately obtain the test results, it is necessary to provide an air resistance testing device with a simple and reasonable structure, which can quickly and accurately obtain the test results through simple operations.

[0005] An air resistance testing device includes:

[0006] A base;

[0007] A driving member, which is arranged on the base, and the driving member has a first driving end and a second driving end;

[0008] A first test piece, which is arranged on the first driving end. The first test piece includes a first sealing member, and the inside of the first sealing member is hollow and one side is open; and

[0009] A second test piece, which is arranged on the second driving end. The second test piece includes a second sealing member, and the inside of the second sealing member is hollow and one side is open. The open end of the second sealing member is opposite to the open end of the first sealing member;

[0010] The driving member can drive the first test piece and the second test piece to move towards each other, and make the first sealing member and the second sealing member cooperate to clamp and seal the product to be tested, or drive the first test piece and the second test piece to move in the opposite direction and make the first sealing member and the second sealing member release the product to be tested.

[0011] The above air resistance testing device can directly drive the first test piece and the second test piece to move towards each other through the driving member, and make the first sealing member and the second sealing member cooperate to clamp the product to be tested, forming a space required for air resistance testing. The space between the first sealing member and the product to be tested is the first detection space, and the space between the second sealing member and the product to be tested is the second detection space. Negative pressure is sequentially applied to the first detection space and the second detection space, and the parameters required for air resistance testing are measured. The structure of the testing device is simple and reasonable, and the detection results can be quickly and accurately obtained through simple operations.

[0012] In one embodiment, the first sealing member includes a first cover and a first sealing ring. The first cover is hollow inside and has an opening at one end. A first groove is provided along the circumferential direction on the end face of the opening end of the first cover. The first sealing ring is embedded in the first groove and partially exposed from the first groove.

[0013] In one embodiment, the first test piece further includes a first pressure gauge and a first throttle valve that communicate with the inside of the first cover.

[0014] In one embodiment, the second sealing member includes a second cover and a second sealing ring. The second cover is hollow inside and has an opening at one end. A second groove is provided along the circumferential direction on the end face of the opening end of the second cover. The second sealing ring is embedded in the second groove and partially exposed from the second groove.

[0015] In one embodiment, the second test piece further includes a second pressure gauge and a second throttle valve that communicate with the inside of the second cover.

[0016] In one embodiment, the driving member includes a driving main body, a first sub-member, and a second sub-member. The driving main body has the first driving end and the second driving end. The first sub-member is provided on the first driving end, and the first sub-member is fixedly connected to the first test piece; the second sub-member is provided on the second driving end, and the second sub-member is fixedly connected to the second test piece; the driving main body can drive the first sub-member and the second sub-member to move towards or away from each other.

[0017] In one embodiment, the driving main body is a slide handle, and is provided with a first thread section and a second thread section with opposite thread directions. The first sub-member is a first slider and is provided with a first threaded hole penetrating therethrough. The second sub-member is a second slider and is provided with a second threaded hole penetrating therethrough. The slide handle is rotatably provided on the base. The first slider is threadedly connected to the first thread section, and the second slider is threadedly connected to the second thread section.

[0018] In one embodiment, the first test piece further includes a first support frame, the first support frame is connected to the first driving end, and the first seal is disposed on the first support frame; the second test piece further includes a second support frame, the second support frame is connected to the second driving end, and the second seal is disposed on the second support frame.

[0019] In one embodiment, the first support frame includes a first plate body and a second plate body. The first plate body is connected to the first driving end. The bottom end of the second plate body is connected to one end of the first plate body close to the second seal, and the first seal is disposed on the top end of the second plate body; the second support frame includes a third plate body and a fourth plate body. The third plate body is connected to the second driving end. The bottom end of the fourth plate body is connected to one end of the third plate body close to the first seal, and the second seal is disposed on the top end of the fourth plate body.

[0020] In one embodiment, it further includes a mounting frame and a mounting plate. The mounting frame is disposed on the base and located between the first test piece and the second test piece. The mounting plate is provided with a plurality of through holes, and the mounting plate is disposed on the top end of the mounting frame. The mounting plate can be clamped and sealed by the first seal and the second seal. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the first embodiment of the air resistance testing device of the present utility model;

[0022] Figure 2 It is a schematic structural diagram of the second embodiment of the air resistance testing device of the present utility model;

[0023] Figure 3 It is a schematic structural diagram of the first testing state of the air resistance testing device of the present utility model;

[0024] Figure 4 It is a schematic structural diagram of the second testing state of the air resistance testing device of the present utility model.

[0025] In the drawings, the list of components represented by each reference numeral is as follows:

[0026] 100. Air resistance testing device; 1. Base; 2. Driving member; 21. Driving main body; 22. First accessory; 23. Second accessory; 3. First test piece; 31. First seal; 311. First cover; 312. First sealing ring; 32. First air pressure gauge; 33. First throttle valve; 34. First support frame; 341. First plate body; 342. Second plate body; 4. Second test piece; 41. Second seal; 411. Second cover; 412. Second sealing ring; 42. Second air pressure gauge; 43. Second throttle valve; 44. Second support frame; 441. Third plate body; 442. Fourth plate body; 5. Mounting frame; 6. Mounting plate; 61. Through hole. Detailed implementation manners

[0027] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following clearly and completely describes the detailed implementation manners of the present utility model with reference to the accompanying drawings. Obviously, the specific details described below are only some embodiments of the present utility model, and the present utility model can also be implemented in many other embodiments different from those described herein. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0030] Please refer to Figure 1 and Figure 2, in one embodiment, an air resistance testing device 100 includes: a base 1, a driving member 2, a first test piece 3, and a second test piece 4. The driving member 2 is disposed on the base 1, and the driving member 2 has a first driving end and a second driving end. The first test piece 3 is disposed on the first driving end, and the first test piece 3 includes a first seal 31. The first seal 31 is hollow inside and has an opening on one side. The second test piece 4 is disposed on the second driving end, and the second test piece 4 includes a second seal 41. The second seal 41 is hollow inside and has an opening on one side. The open end of the second seal 41 faces the open end of the first seal 31. The driving member 2 can drive the first test piece 3 and the second test piece 4 to move towards each other and make the first seal 31 cooperate with the second seal 41 to clamp and seal the product to be tested, or drive the first test piece 3 and the second test piece 4 to move in the opposite direction and make the first seal 31 and the second seal 41 release the product to be tested.

[0031] The product to be tested can be a thin film or a porous product, such as a mask, clothing, a tent, a filter cloth, a porous filter element, etc. The size of the product to be tested is larger than the open ends of the first seal 31 and the second seal 41, and the shapes and sizes of the first seal 31 and the second seal 41 can be the same.

[0032] Please refer to Figure 3 and Figure 4 , for this air resistance testing device 100, the driving member 2 can directly drive the first test piece 3 and the second test piece 4 to move towards each other, and make the first seal 31 cooperate with the second seal 41 to clamp the product to be tested, forming a space required for air resistance testing. The space between the first seal 31 and the product to be tested is the first detection space, and the space between the second seal 41 and the product to be tested is the second detection space. Negative pressure is connected to the first detection space and the second detection space in sequence, and the parameters required for air resistance testing are measured. The structure of the testing device is simple and reasonable, and the detection result can be obtained quickly and accurately through simple operations.

[0033] In one embodiment of the first seal 31, the first seal 31 includes a first cover 311 and a first sealing ring 312. The first cover 311 is hollow inside and has an opening at one end. A first groove is provided along the circumferential direction on the end face of the open end of the first cover 311. The first sealing ring 312 is embedded in the first groove and partially exposed from the first groove. This matching structure of the first cover 311 and the first sealing ring 312 is beneficial to ensuring the sealing performance.

[0034] The first test piece 3 further includes a first pressure gauge 32 and a first throttle valve 33 that communicate with the inside of the first cover 311. The air pressure in the sealed space can be viewed in real time through the first pressure gauge 32, and the first throttle valve 33 can adjust the gas flow rate in the sealed space according to the different materials of the product to be tested.

[0035] In one embodiment of the second seal 41, the second seal 41 includes a second cover 411 and a second sealing ring 412. The interior of the second cover 411 is hollow and one end is open. A second groove is provided along the circumference on the end face of the open end of the second cover 411. The second sealing ring 412 is embedded in the second groove and partially exposed from the second groove. This mating structure of the second cover 411 and the second sealing ring 412 is conducive to ensuring the sealing performance.

[0036] The second test piece 4 further includes a second pressure gauge 42 and a second throttle valve 43 that communicate with the interior of the second cover 411. The air pressure in the sealed space can be viewed in real time through the second pressure gauge 42, and the second throttle valve 43 can adjust the gas flow rate in the sealed space according to the different materials of the product to be tested.

[0037] It should be noted that a first flow meter can also be connected to the first cover 311, and a second flow meter can be connected to the second cover 411. The air pressure value in the sealed space can be obtained through the pressure gauge test, and the volumetric velocity in the sealed space can be obtained through the flow meter test. Using the flow resistance calculation formula R = Δp / qv, where Δp represents the pressure difference generated when the air flow passes through the test product, and qv represents the volumetric velocity of the air flow passing through the test product, the experimenter can directly obtain these key parameters from the pressure gauge and the flow meter. By substituting the formula for calculation, the experimenter can obtain the air resistance value of the test product.

[0038] In one embodiment of the driving member 2, the driving member 2 includes a driving main body 21, a first accessory 22, and a second accessory 23. The driving main body 21 has a first driving end and a second driving end. The first accessory 22 is provided on the first driving end, and the first accessory 22 is fixedly connected to the first test piece 3. The second accessory 23 is provided on the second driving end, and the second accessory 23 is fixedly connected to the second test piece 4. The driving main body 21 can drive the first accessory 22 and the second accessory 23 to move towards or away from each other.

[0039] Furthermore, the driving body 21 is a slide handle, which is provided with a first thread section and a second thread section with opposite thread directions. The first sub-component 22 is a first slider, which is provided with a first threaded hole running through it, and the second sub-component 23 is a second slider, which is provided with a second threaded hole running through it. The slide handle is rotatably arranged on the base 1. The first slider is threadedly connected to the first thread section, and the second slider is threadedly connected to the second thread section. By rotating the slide handle clockwise, the first slider can drive the first test piece 3 along the first thread section, and the second slider can drive the second test piece 4 along the second thread section to move towards each other. The first cover 311 and the second cover 411 cooperate to clamp the product to be tested. By rotating the slide handle counterclockwise, the product to be tested can be released. The whole test operation process is simple and fast, without complex steps and equipment, reducing the experimental difficulty and cost. This positive and negative thread slide adopts a double slide seat design, increasing the balance, making the operation more stable, and also enabling the first slider and the second slider to remain stable during high-speed operation, reducing vibration and noise.

[0040] Of course, the driving member 2 can also adopt other ways such as cylinder driving and motor-driven lead screw transmission.

[0041] To ensure the relatively stable installation structure of the first cover 311 and the second cover 411, the first test piece 3 further includes a first support frame 34. The first support frame 34 is fixedly connected to the first slider and the first cover 311 respectively. The second test piece 4 further includes a second support frame 44. The second support frame 44 is fixedly connected to the second slider and the second cover 411 respectively.

[0042] Furthermore, the first support frame 34 includes a first plate body 341 and a second plate body 342. The first plate body 341 is fixedly connected to the first slider. The bottom end of the second plate body 342 is fixedly connected to one end of the first plate body 341 close to the second cover 411, and the top end of the second plate body 342 is fixedly connected to the first cover 311. The second support frame 44 includes a third plate body 441 and a fourth plate body 442. The third plate body 441 is fixedly connected to the second slider. The bottom end of the fourth plate body 442 is fixedly connected to one end of the third plate body 441 close to the first cover 311, and the top end of the fourth plate body 442 is fixedly connected to the second cover 411.

[0043] Please refer to Figure 1 、 Figure 3 and Figure 4, in another embodiment, in order to be able to adapt to testing bulk film products, including various shapes such as circular and polygonal, the air resistance testing device 100 further includes a mounting bracket 5 and a mounting plate 6. The mounting bracket 5 is provided on the base 1 and is located between the first support frame 34 and the second support frame 44. The mounting plate 6 is distributed with a plurality of through holes 61 for placing bulk products to be tested, and the shape of the through holes 61 is the same as the shape of the bulk products to be tested. The mounting plate 6 is provided at the top of the mounting bracket 5, and the mounting plate 6 can be clamped and sealed by the first cover 311 and the second cover 411. This special design of the mounting plate 6 not only improves the flexibility and diversity of testing, but also makes the air resistance testing of bulk film products more simple and efficient. After the mounting plate 6 is securely installed on the mounting bracket 5, just shake the slide handle clockwise, and the first cover 311 and the second cover 411 will smoothly move closer to the middle and closely fit with the mounting plate 6, forming a closed and stable testing environment. This design not only improves the convenience of operation, but also ensures the accuracy and safety of the testing process.

[0044] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0045] The above-described embodiments merely represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications, substitutions and improvements can still be made, and these should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the claims.

Claims

1. An air resistance testing device, characterized in that, Comprising: Base; A driving member, disposed on the base, and the driving member has a first driving end and a second driving end; A first test member, disposed on the first driving end, the first test member includes a first seal, the first seal is hollow inside and has an opening on one side; And A second test member, disposed on the second driving end, the second test member includes a second seal, the second seal is hollow inside and has an opening on one side, and the open end of the second seal faces the open end of the first seal; The driving member can drive the first test member and the second test member to move towards each other and make the first seal cooperate with the second seal to clamp and seal the product to be tested, or drive the first test member and the second test member to move in the opposite direction and make the first seal and the second seal release the product to be tested.

2. The air resistance testing device according to claim 1, wherein The first seal includes a first cover and a first sealing ring, the first cover is hollow inside and has an opening at one end, a first groove is provided along the circumferential direction on the end face of the open end of the first cover, the first sealing ring is embedded in the first groove, and part of it protrudes from the first groove.

3. The air resistance testing device according to claim 2, characterized in that, The first test member further includes a first pressure gauge and a first throttle valve that communicate with the inside of the first cover.

4. The air resistance testing device according to claim 1, characterized in that The second seal includes a second cover and a second sealing ring, the second cover is hollow inside and has an opening at one end, a second groove is provided along the circumferential direction on the end face of the open end of the second cover, the second sealing ring is embedded in the second groove, and part of it protrudes from the second groove.

5. The air resistance testing device according to claim 4, characterized in that, The second test member further includes a second pressure gauge and a second throttle valve that communicate with the inside of the second cover.

6. The air resistance testing device according to claim 1, wherein The driving member includes a driving body, a first sub-member and a second sub-member, the driving body has the first driving end and the second driving end, the first sub-member is disposed on the first driving end, and the first sub-member is fixedly connected to the first test member; the second sub-member is disposed on the second driving end, and the second sub-member is fixedly connected to the second test member; the driving body can drive the first sub-member and the second sub-member to move towards each other or in the opposite direction.

7. The air resistance testing device according to claim 6, characterized in that, The driving body is a slide handle, and is provided with a first thread section and a second thread section with opposite thread directions, the first sub-member is a first slider, and is provided with a first threaded hole through it, the second sub-member is a second slider, and is provided with a second threaded hole through it, the slide handle is rotatably disposed on the base, the first slider is threadedly connected to the first thread section, and the second slider is threadedly connected to the second thread section.

8. The air resistance testing device according to claim 1, characterized in that, The first test member further includes a first support frame, the first support frame is connected to the first driving end, and the first seal is disposed on the first support frame; the second test member further includes a second support frame, the second support frame is connected to the second driving end, and the second seal is disposed on the second support frame.

9. The air resistance testing device according to claim 8, wherein The first support frame includes a first plate body and a second plate body. The first plate body is connected to the first driving end. The bottom end of the second plate body is connected to one end of the first plate body close to the second seal. The first seal is provided on the top end of the second plate body. The second support frame includes a third plate body and a fourth plate body. The third plate body is connected to the second driving end. The bottom end of the fourth plate body is connected to one end of the third plate body close to the first seal. The second seal is provided on the top end of the fourth plate body.

10. The air resistance testing device according to claim 1, characterized in that, It further includes a mounting frame and a mounting plate. The mounting frame is arranged on the base and is located between the first test piece and the second test piece. The mounting plate is distributed with a plurality of through holes, and the mounting plate is arranged on the top end of the mounting frame. The mounting plate can be clamped and sealed by the first seal and the second seal.

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