Sponge air permeability detector

Abstract

The utility model discloses a sponge air permeability detector, which relates to the sponge detection field, and comprises a detector shell, the left side of the detector shell is provided with a sample placing port, the left side of the detector shell is provided with two chutes on the inner bottom wall of the sample placing port, and the interior of each chute is fixedly provided with a fixed rod. A sliding block is movably connected to the outer wall of the fixing rod, a sample placing box is fixedly installed at the top of the sliding block, and a spring is arranged on the portion, located on the left side of the sliding block, of the outer wall of the fixing rod in a sleeving mode; and a control panel is arranged at the top of the left side of the detector shell. By arranging a sample placing box and a spring, sponge can be quickly placed and taken, a sealing gasket and a sealing groove are arranged, a detector can be sealed, air leakage is prevented from influencing a test result, a vacuum generator body and a meter body are arranged, the current air flow can be automatically recorded and stored, meanwhile, a dust cover and a sealing strip are arranged, and the detection result is more accurate. And dust can be prevented from entering the detector.

Description

Technical Field

[0001] This utility model relates to the field of sponge testing technology, specifically a sponge air permeability tester. Background Technology

[0002] Sponge air permeability testing measures how easily air passes through individual sponge cells. The test standard is the airflow rate. In many industries, such as automotive manufacturing, medical, home furnishings, and packaging, the air permeability of sponge materials is a crucial consideration. Therefore, air permeability testing instruments are used to test sponge air permeability. However, existing air permeability testing instruments typically use simple clamps or compression devices to hold the sponge in place. These devices are often poorly designed and cannot quickly release or remove the sponge.

[0003] To overcome the above-mentioned defects, the prior art (Chinese patent application number: 201720979224.0, application date: August 4, 2017) discloses a sponge air permeability tester. This air permeability tester uses an air pump to guide airflow into the air inlet pipe. After passing through the guide valve body in the airflow homogenization box, the airflow slows down and disperses under the guidance of the guide groove. The airflow drives the impeller to rotate, and the impeller corrects the direction of the airflow, so that the airflow enters the sponge to be tested placed between the airflow homogenization box and the compression cylinder. Then, it enters the gas sensor through the ventilation pipe. The gas sensor converts the airflow volume into an electronic signal to complete the monitoring of the sponge air permeability. The adjustment device set on the compression cylinder can adjust the degree of compression of the sponge and also facilitates the disassembly and assembly of the sponge to be tested.

[0004] Although existing technologies can solve the problem of disassembling and assembling the sponge under test, the disassembly and assembly process requires frequent operation of the adjustment device (such as the adjustment nut) on the compression cylinder, which increases the complexity of the operation. If the operation is not done properly, it may lead to uneven compression, affecting the measurement results of air permeability, thus making it impossible to quickly release and remove the sponge. In addition, the lack of a sealing structure makes it easy for air to leak and affect the test results.

[0005] Therefore, we proposed that a sponge air permeability tester can effectively solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a sponge air permeability tester to solve the problems mentioned in the background art. Currently, when using the air permeability tester, the adjustment device (such as the adjusting nut) on the compression cylinder needs to be frequently operated during disassembly and assembly. This increases the complexity of operation. If the operation is not done properly, it may lead to uneven compression, affecting the measurement results of air permeability. As a result, it is impossible to quickly release and remove the sponge. In addition, the lack of a sealing structure makes it easy for air to leak and affect the test results.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sponge air permeability tester, comprising a tester housing, a sample release port on the left side of the tester housing, two sliding grooves on the bottom wall of the sample release port on the left side of the tester housing, a fixing rod fixedly installed inside each sliding groove, a slider movably connected to the outer wall of the fixing rod, a sample release box fixedly installed on the top of the slider, and a spring sleeved on the left side of the slider on the outer wall of the fixing rod; a control panel is provided on the top of the left side of the tester housing, an emergency switch button is provided on the front of the left side of the tester housing; a printing port is provided on the front of the left side of the tester housing, a dust cover is hinged to the front of the printing port on the left side of the tester housing, and a slot is provided on the outer edge of the printing port on the left side of the tester housing.

[0008] As a preferred technical solution of this application, a miniature telescopic cylinder body is provided inside the sampling port on the left side of the detector housing. A sealing cover is fixedly installed on the output end of the miniature telescopic cylinder body. A vacuum generator body is provided on the top right side of the sealing cover, and a metering device body is provided on the top left side of the sealing cover.

[0009] As a preferred technical solution of this application, a connecting plate is fixedly connected to the outer wall of the miniature telescopic cylinder body, a baffle is fixedly installed on the left side of the connecting plate, and a sealing gasket is fixedly connected to the bottom of the baffle.

[0010] As a preferred technical solution of this application, a sealing strip is fixedly connected to the back of the dust cover. The dust cover is made of transparent acrylic material. By manually moving the dust cover downward, the dust cover drives the sealing strip into the slot, so that the dust cover fits tightly against the detector housing, forming a sealed environment that can prevent dust from entering the detector.

[0011] As a preferred technical solution of this application, the slider and the slide groove and the fixed rod are movably connected. The inside of the slide groove and the slider and the spring are tightly fitted. The slide groove is driven to slide outward in the slide groove by the lofting box. At the same time, the slider moves on the corresponding fixed rod and compresses the connected spring.

[0012] As a preferred technical solution of this application, the inner diameter of the sealing cover is larger than the diameter of the lofting box, and the lofting box and the lofting port are connected by a movable connection. The sealing cover is moved downward by the output end of the micro telescopic cylinder body until the sealing cover is completely covered on the lofting box.

[0013] As a preferred technical solution of this application, the baffle and the sealing gasket are tightly fitted, the sealing gasket and the sealing groove are detachably connected, and the sealing gasket is made of rubber. The sealing gasket connected by the baffle is inserted into the sealing groove to form a seal, which ensures the airtightness during the test and prevents air leakage from affecting the test results.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This sponge air permeability tester features a sample box and spring for rapid sponge placement and removal, a sealing gasket and sealing groove to seal the instrument and prevent air leakage from affecting test results, a vacuum generator and a metering unit to automatically record and save the current airflow, and a dust cover and sealing strip to prevent dust from entering the instrument. Details are as follows:

[0016] 1. A lofting box and spring are set up. The lofting port, baffle, lofting box, slider, slide, fixing rod and spring work together to realize the rapid placement and picking of sponge.

[0017] Furthermore, sealing gaskets and sealing grooves are installed. The control panel, miniature telescopic cylinder body, sealing cover, connecting plate, baffle, sealing gasket and sealing groove work together to form a seal, ensuring the airtightness during the test and preventing air leakage from affecting the test results.

[0018] Furthermore, a vacuum generator body and a metering body are set up. Through the cooperation of the control panel, the vacuum generator body and the metering body, the current air flow can be automatically recorded and saved. The recording results are displayed on the control panel for staff to view.

[0019] 2. A dust cover and sealing strip are installed. Through the cooperation of the print port, control panel, printer, dust cover, sealing strip and card slot, dust can be prevented from entering the inside of the detector, thereby protecting the precision parts of the detector and the print port from contamination and damage. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the open structure of the lofting box and dust cover of this utility model;

[0022] Figure 3 This is a partial cross-sectional structural diagram of the detector housing of this utility model;

[0023] Figure 4 This is a partial cross-sectional structural diagram of the detector housing and slide groove of this utility model;

[0024] Figure 5 This is a partial structural diagram of the dust cover of this utility model;

[0025] Figure 6 This utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0026] Figure 7 This utility model Figure 1 Enlarged structural diagram at point B.

[0027] In the diagram: 1. Detector housing; 2. Control panel; 3. Emergency switch button; 4. Sample opening; 5. Slide groove; 6. Fixing rod; 7. Spring; 8. Slider; 9. Sample box; 10. Sealing groove; 11. Miniature telescopic cylinder body; 12. Sealing cover; 13. Vacuum generator body; 14. Connecting plate; 15. Baffle; 16. Sealing gasket; 17. Slot; 18. Dust cover; 19. Sealing strip; 20. Printing port. Detailed Implementation

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

[0029] Please see Figures 1-7 The present invention provides the following technical solution:

[0030] Example 1: To address the issues raised by commercially available air permeability testers, such as the need for frequent operation of the adjusting device (e.g., adjusting nut) on the clamping cylinder during assembly and disassembly, which increases operational complexity and can easily lead to uneven clamping if misoperated, affecting air permeability measurement results, hindering rapid release and release of the sponge, and the lack of a sealing structure allowing air leakage to affect test results, please refer to the attached... Figure 1 -Appendix Figure 4 and attached Figure 6The device includes a detector housing 1. A sample opening 4 is located on the left side of the detector housing 1. Two grooves 5 are formed on the bottom wall of the sample opening 4 on the left side of the detector housing 1. A fixing rod 6 is fixedly installed inside each groove 5. A slider 8 is movably connected to the outer wall of the fixing rod 6. A sample box 9 is fixedly installed on the top of the slider 8. A spring 7 is sleeved on the left side of the slider 8 on the outer wall of the fixing rod 6. A control panel 2 is located on the top of the left side of the detector housing 1. An emergency switch button 3 is located on the front of the left side of the detector housing 1. A miniature telescopic cylinder body 11 is located inside the sample opening 4 on the left side of the detector housing 1. A sealing cover 12 is fixedly installed at the output end of the miniature telescopic cylinder body 11. A vacuum generator body 13 is located on the top right side of the sealing cover 12. A metering device body is located on the top left side of the sealing cover 12. A connecting plate 14 is fixedly connected to the outer wall of the miniature telescopic cylinder body 11. A baffle 15 is fixedly installed on the left side of the connecting plate 14. A sealing gasket 16 is fixedly connected to the bottom of the baffle 15. The slider 8 is movably connected to the slide groove 5 and the fixed rod 6. The inside of the slide groove 5 and the slider 8 are tightly fitted to the spring 7. The inner diameter of the sealing cover 12 is larger than the diameter of the lofting box 9. The lofting box 9 is movably connected to the lofting opening 4. The baffle 15 is tightly fitted to the sealing gasket 16. The sealing gasket 16 is detachably connected to the sealing groove 10, and the sealing gasket 16 is made of rubber.

[0031] When the baffle 15 inside the sampling port 4 is open, the operator manually pulls the sampling box 9 outward, causing the sampling box 9 to move the slider 8 outward within the slide groove 5. Simultaneously, the slider 8 moves on the corresponding fixed rod 6, compressing the connected spring 7, thus pulling the sampling box 9 out of the sampling port 4 until it reaches the appropriate position. Then, the operator manually places the sponge requiring air permeability testing into the sampling box 9. The operator releases the pulled sampling box 9, causing the spring 7's rebound force to move the slider 8 and the sampling box 9 inward, enabling rapid placement and removal of the sponge. After the sampling box 9 is fully inserted into the sampling port 4, the operator activates the miniature telescopic cylinder body 11 via the control panel 2, causing the output end of the miniature telescopic cylinder body 11 to drive the sealing... The cover 12 moves downward until it is completely covered on the sample box 9. During the operation of the miniature telescopic cylinder body 11, the connecting plate 14 is moved, causing the connecting plate 14 to move the baffle 15 downward. The sealing gasket 16 connected to the baffle 15 is inserted into the sealing groove 10 to form a seal, ensuring the airtightness during the test and preventing air leakage from affecting the test results. Then, the vacuum generator body 13 and the metering body are started through the control panel 2, so that the vacuum generator body 13 starts to work and generates negative pressure. Once the metering body detects a stable differential pressure of 125±1pa, it automatically records and saves the current air flow. The recorded results are displayed through the control panel 2 for the staff to view.

[0032] Example 2: This prevents dust from entering the detector; please refer to the attached document. Figure 1 -Appendix Figure 2 Appendix Figure 5 and attached Figure 7 The front left side of the detector housing 1 has a printing port 20. A dust cover 18 is hinged to the front of the printing port 20 on the left side of the detector housing 1. A slot 17 is provided on the outer edge of the printing port 20 on the left side of the detector housing 1. A sealing strip 19 is fixedly connected to the back of the dust cover 18. The dust cover 18 is made of transparent acrylic material.

[0033] A printer is installed inside the detector housing 1 at the printing port 20. After the sponge air permeability test is completed, when the operator operates the control panel 2 to control the printer inside to print the result strip, the dust cover 18 is manually moved outward, causing the dust cover 18 to move the sealing strip 19 upward and disengage it from the slot 17, thereby opening the dust cover 18 and allowing the printed result strip in the printing port 20 to be removed. Then, the dust cover 18 is manually moved downward, causing the dust cover 18 to move the sealing strip 19 into the slot 17, so that the dust cover 18 fits tightly against the detector housing 1, forming a sealed environment that prevents dust from entering the detector and protects the detector's precision components and the printing port 20 from contamination and damage.

[0034] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sponge air permeability detector, comprising a detector shell (1), a loft opening (4) is formed on the left side of the detector shell (1), two sliding grooves (5) are formed on the bottom wall inside the loft opening (4) on the left side of the detector shell (1), a fixed rod (6) is fixedly installed inside each sliding groove (5), a sliding block (8) is movably connected to the outer wall of the fixed rod (6), a loft box (9) is fixedly installed on the top of the sliding block (8), and a spring (7) is sleeved on the outer wall of the fixed rod (6) on the left side of the sliding block (8); characterized in that A control panel (2) is arranged on the top of the left side of the detector shell (1), and an emergency switch button (3) is arranged on the front of the left side of the detector shell (1); A printing opening (20) is formed on the front of the left side of the detector shell (1), a dust cover (18) is hingedly connected to the front of the left side of the detector shell (1) located in the printing opening (20), and a clamping groove (17) is formed on the outer edge of the left side of the detector shell (1) located in the printing opening (20).

2. The sponge air permeability detector according to claim 1, characterized in that: A micro telescopic air cylinder body (11) is arranged inside the loft opening (4) on the left side of the detector shell (1), a sealing cover (12) is fixedly installed on the output end of the micro telescopic air cylinder body (11), a vacuum generator body (13) is arranged on the top of the right side of the sealing cover (12), and a meter body is arranged on the top of the left side of the sealing cover (12).

3. The apparatus according to claim 2, wherein: A connecting plate (14) is fixedly connected to the outer wall of the micro telescopic air cylinder body (11), a baffle (15) is fixedly installed on the left side of the connecting plate (14), and a sealing gasket (16) is fixedly connected to the bottom of the baffle (15).

4. The sponge air permeability detector according to claim 1, characterized in that: A sealing strip (19) is fixedly connected to the back of the dust cover (18), and the dust cover (18) is made of transparent acrylic material.

5. The sponge air permeability detector according to claim 1, characterized in that: The sliding block (8) is movably connected with the sliding groove (5) and the fixed rod (6), and the sliding groove (5) and the sliding block (8) are tightly attached with the spring (7).

6. The sponge air permeability detector according to claim 2, characterized in that: The inner diameter of the sealing cover (12) is greater than the diameter of the loft box (9), and the loft box (9) is movably connected with the loft opening (4).

7. The apparatus according to claim 3, wherein: The baffle (15) is tightly attached with the sealing gasket (16), the sealing gasket (16) is detachably connected with the sealing groove (10), and the sealing gasket (16) is made of rubber.

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