Efficient mask particulate matter filtering testing device

Abstract

The utility model relates to the technical field of mask detection equipment, and discloses an efficient mask particulate matter filtering and testing device which comprises a detection box, a first movable groove and a second movable groove are sequentially formed in the bottom of an inner cavity of the detection box from front to back, and moving assemblies are arranged in the first movable groove and the second movable groove; and a clamping assembly is arranged above the moving assembly. Through the arrangement of the moving assembly and the clamping assembly, a worker places the two ends of a mask on the corresponding supporting platforms respectively, then the two ends of the mask are fixedly clamped through the positioning rods, the telescopic springs and the clamping plates, then the two ends of the mask are pulled in the opposite directions through the moving assembly, and therefore the mask is leveled; and then detection is carried out through a detection instrument in the detection box, so that the quality and efficiency of the mask particulate matter filtering test are improved, and the accuracy of a test result is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of mask testing equipment, specifically a high-efficiency mask particulate matter filtration testing device. Background Technology

[0002] A face mask is a hygiene product, generally worn over the mouth and nose to filter the air entering the mouth and nose, blocking harmful gases, odors, droplets, viruses, and other substances. It is typically made of gauze or paper. Face masks offer some filtration of air entering the lungs and provide excellent protection during respiratory infectious disease outbreaks or when working in dusty or polluted environments.

[0003] The existing patent publication number CN212807973U discloses a mask particulate filtration efficiency testing device, including a frame with at least two testing mechanisms on the frame. Each testing mechanism includes a first filter, a fan, an aerosol generator, a mixing tank, and an upstream pipe connected in sequence. The testing mechanism also includes a downstream pipe, a second filter, a drive device, and one or two photometers; at least one of the testing mechanisms is equipped with an electrostatic neutralizer. This utility model relates to the field of mask testing devices. It uses two testing mechanisms to perform salinity and oiliness tests on masks respectively, reducing the number of times the equipment needs cleaning. The electrostatic neutralizer can eliminate static electricity from saline particles, making the test more accurate. It solves the technical problems of complex structure, high production cost, difficulty in operation and debugging, frequent equipment cleaning required when switching between oiliness and salinity tests, low testing efficiency, and inaccurate measurements in mask particulate filtration efficiency testing devices.

[0004] However, it still has the following drawbacks in practical use:

[0005] Existing mask particulate filtration testing devices do not flatten the mask surface during testing, resulting in wrinkles. The thickness of these wrinkles affects the mask's particulate filtration detection structure during subsequent testing, leading to a decrease in the accuracy of the test results. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency mask particulate filtration testing device to solve the problem mentioned in the background art that the existing mask particulate filtration testing devices do not flatten the mask surface when testing the mask, resulting in wrinkles. In subsequent tests, the thickness of the wrinkles affects the particulate filtration detection structure of the mask, leading to a decrease in the accuracy of the test structure.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model is a high-efficiency mask particulate matter filtration testing device, including a testing box: the bottom of the inner cavity of the testing box is provided with a first movable groove and a second movable groove from front to back, the first movable groove and the second movable groove are provided with a moving component, and a clamping component is provided above the moving component;

[0009] The moving component includes a slide rod, a bidirectional lead screw, a first slider, a second slider, and a support frame. The bidirectional lead screw is rotatably connected between the inner walls of the left and right sides inside the second movable groove, and the first slider is threadedly connected to both ends of the bidirectional lead screw. The slide rod is fixedly installed between the inner walls of the left and right sides of the first movable groove, and the second slider is slidably arranged at both ends of the slide rod. The support frame is fixedly installed on the top of the first slider and the second slider.

[0010] The clamping assembly includes a support platform, a positioning rod, a telescopic spring, a pull ring, and a clamping plate. The support platform is fixedly installed between the first slider and the second slider. The positioning rod is inserted into the top of the support frame, and a clamping plate is fixedly installed at the bottom of the positioning rod. The clamping plate is located directly above the support platform. A telescopic spring is sleeved on the outside of the positioning rod. The telescopic spring is located between the top of the clamping plate and the bottom of the inner side of the support frame. A pull ring is fixedly installed at the top of the positioning rod.

[0011] Furthermore, a motor is fixedly installed on the left side of the second movable slot, and the output end of the motor is fixedly connected to the left end of the bidirectional lead screw.

[0012] Furthermore, a downstream cavity is fixedly installed at the bottom of the inner cavity of the detection box, and a sealing groove is provided at the top of the downstream cavity.

[0013] Furthermore, the detection box has an upstream cavity located directly above the downstream cavity, and a sealing ring is fixedly installed at the bottom of the upstream cavity, which is compatible with the sealing groove.

[0014] Furthermore, a cylinder is fixedly installed at the top of the inner cavity of the detection box, and a drive rod is fixedly connected to the bottom output end of the cylinder. The bottom end of the drive rod is fixedly installed at the top of the upstream cavity.

[0015] Furthermore, a telescopic flexible hose is fixedly connected between the left side of the upstream cavity and the testing instrument inside the testing box.

[0016] This utility model has the following beneficial effects:

[0017] I. This utility model, by setting up a moving component and a clamping component, allows workers to place both ends of the mask on corresponding support platforms. Then, the positioning rod, telescopic spring, and clamping plate are used to fix and clamp the two ends of the mask. Subsequently, the moving component pulls the two ends of the mask in opposite directions to flatten the mask. Then, the mask is tested by the testing instruments inside the testing box, thereby improving the quality and efficiency of the particulate matter filtration test of the mask and improving the accuracy of the test results.

[0018] Second, based on the above-mentioned beneficial effects, by setting up an upstream cavity and a downstream cavity, the staff can start the cylinder, which drives the rod to bring the upstream cavity into contact with the downstream cavity. Then, the sealing ring at the bottom of the upstream cavity is precisely inserted into the sealing groove at the top of the downstream cavity. This improves the sealing effect of the upstream and downstream cavities when testing the mask in the middle, thereby improving the accuracy of the test and making it highly practical. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0021] Figure 2 This is a top sectional view of the overall structure of this utility model;

[0022] Figure 3 This is a schematic cross-sectional view of the overall structure of this utility model from the left side;

[0023] Figure 4 For the present utility model Figure 3 Enlarged diagram of point A in the middle.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] In the diagram: 1. Detection box; 2. First movable groove; 3. Second movable groove; 4. Slide rod; 5. Bidirectional lead screw; 6. First slider; 7. Second slider; 8. Support frame; 9. Support platform; 10. Positioning rod; 11. Telescopic spring; 12. Pull ring; 13. Clamping plate; 14. Motor; 15. Downstream cavity; 16. Sealing groove; 17. Upstream cavity; 18. Sealing ring; 19. Cylinder; 20. Drive rod; 21. Telescopic hose. Detailed Implementation

[0026] 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.

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0028] Please see Figure 1-4 As shown, this utility model is a high-efficiency mask particulate filtration testing device, including a testing box 1: the bottom of the inner cavity of the testing box 1 is provided with a first movable groove 2 and a second movable groove 3 from front to back, the first movable groove 2 and the second movable groove 3 are provided with a moving component, and a clamping component is provided above the moving component;

[0029] The moving component includes a slide rod 4, a bidirectional lead screw 5, a first slider 6, a second slider 7, and a support frame 8. The bidirectional lead screw 5 is rotatably connected between the inner walls of the left and right sides inside the second movable groove 3, and the first slider 6 is threadedly connected to both ends of the bidirectional lead screw 5. The slide rod 4 is fixedly installed between the inner walls of the left and right sides of the first movable groove 2, and the second slider 7 is slidably set at both ends of the slide rod 4. The support frame 8 is fixedly installed on the top of the first slider 6 and the second slider 7.

[0030] The clamping assembly includes a support platform 9, a positioning rod 10, a telescopic spring 11, a pull ring 12, and a clamping plate 13. The support platform 9 is fixedly installed between the first slider 6 and the second slider 7. The positioning rod 10 is inserted into the top of the support frame 8, and the clamping plate 13 is fixedly installed at the bottom of the positioning rod 10. The clamping plate 13 is located directly above the support platform 9. The telescopic spring 11 is sleeved on the outside of the positioning rod 10. The telescopic spring 11 is located between the top of the clamping plate 13 and the bottom of the inner side of the support frame 8. The pull ring 12 is fixedly installed at the top of the positioning rod 10.

[0031] The slide bar 4 is used to guide the movement of the second slider 7. The rotation of the bidirectional screw 5 drives the first sliders 6 at both ends to move away from or closer to each other, thereby driving the clamping assembly to move. The first movable groove 2 and the second movable groove 3 are used to accommodate the bidirectional screw 5 and the slide bar 4, and at the same time, they limit the movement of the first slider 6 and the second slider 7. The telescopic spring 11 is used to press the clamping plate 13 downward.

[0032] A motor 14 is fixedly installed on the left side of the second movable slot 3, and the output end of the motor 14 is fixedly connected to the left end of the bidirectional lead screw 5.

[0033] Motor 14 serves as the drive source for the bidirectional lead screw 5;

[0034] Working principle: The staff places both ends of the mask on the corresponding support platforms 9, and then uses the positioning rod 10, the telescopic spring 11 and the clamping plate 13 to fix and clamp the two ends of the mask. Then, the motor 14 is started, which drives the bidirectional lead screw 5 to rotate. The first sliders 6 at both ends of the bidirectional lead screw 5 move away from each other. Through cooperation with the second slider 7, the mask on the support platform 9 is moved. When the two support platforms 9 move at the same time, the two ends of the mask are pulled, so that the mask is flattened. This improves the quality and efficiency of the particulate matter filtration test of the mask when the detection instrument inside the detection box 1 performs the test.

[0035] Please see Figure 1-4 As shown, in this embodiment, based on the above embodiment 1, a downstream cavity 15 is fixedly installed at the bottom of the inner cavity of the detection box 1, and a sealing groove 16 is opened at the top of the downstream cavity 15.

[0036] The sealing groove 16 is used to cooperate with the sealing ring 18 to enhance the sealing effect between the downstream cavity 15 and the upstream cavity 17.

[0037] The test chamber 1 has an upstream cavity 17 inside, which is located directly above the downstream cavity 15. A sealing ring 18 is fixedly installed at the bottom of the upstream cavity 17, and the sealing ring 18 is adapted to the sealing groove 16.

[0038] A cylinder 19 is fixedly installed at the top of the inner cavity of the test box 1. A drive rod 20 is fixedly connected to the bottom output end of the cylinder 19. The bottom end of the drive rod 20 is fixedly installed at the top of the upstream cavity 17.

[0039] Cylinder 19 serves as the driving source for drive rod 20, which in turn drives upstream cavity 17 to move downward for detection.

[0040] A flexible hose 21 is fixedly connected between the left side of the upstream cavity 17 and the testing instrument inside the testing box 1;

[0041] The telescopic flexible connector is used to connect the output port of the testing instrument to the upstream cavity 17.

[0042] By setting up an upstream cavity 17 and a downstream cavity 15, the operator activates a cylinder 19. The cylinder 19, through a drive rod 20, brings the upstream cavity 17 into contact with the downstream cavity 15. Subsequently, the sealing ring 18 at the bottom of the upstream cavity 17 is precisely inserted into the sealing groove 16 at the top of the downstream cavity 15. This improves the sealing effect of the upstream cavity 17 and the downstream cavity 15 during the testing of the mask, thereby enhancing the accuracy of the test.

[0043] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high efficiency facemask particulate filtration test device, characterized by, Including detection box (1): the detection box (1) inner chamber bottom is opened with first movable slot (2) and second movable slot (3) from front to back in turn, movable assembly is arranged in first movable slot (2) and second movable slot (3), clamping assembly is arranged above movable assembly; Movable assembly includes slide rod (4), bidirectional lead screw (5), first sliding block (6), second sliding block (7) and support frame (8), the bidirectional lead screw (5) is rotatably connected between the left and right two side inner walls in the second movable slot (3), and the left and right ends of the bidirectional lead screw (5) are both threadedly connected with the first sliding block (6), the slide rod (4) is fixedly installed between the left and right two side inner walls in the first movable slot (2), and the two ends of the slide rod (4) are both slidably provided with the second sliding block (7), the first sliding block (6) and the second sliding block (7) are fixedly installed with the support frame (8) on the top. Clamping assembly includes support platform (9), positioning rod (10), extension spring (11), pull ring (12) and clamping plate (13), the support platform (9) is fixedly installed between the first sliding block (6) and the second sliding block (7), the positioning rod (10) is inserted into the top of the support frame (8), and the clamping plate (13) is fixedly installed at the bottom of the positioning rod (10), the clamping plate (13) is located directly above the support platform (9), the positioning rod (10) is provided with the extension spring (11) outside, the extension spring (11) is located between the top of the clamping plate (13) and the inside bottom of the support frame (8), and the pull ring (12) is fixedly installed at the top of the positioning rod (10).

2. The high efficiency particulate air filter test device of claim 1, wherein: The left side of the second movable slot (3) is fixedly installed with a motor (14), and the output end of the motor (14) is fixedly connected to the left end of the bidirectional lead screw (5).

3. The high efficiency particulate air filter test device of claim 1, wherein: The downstream cavity (15) is fixedly installed at the bottom of the inner chamber of the detection box (1), and the sealing groove (16) is formed in the top of the downstream cavity (15).

4. The high efficiency particulate air filter test device of claim 1, wherein: The upstream cavity (17) is arranged in the detection box (1), the upstream cavity (17) is located directly above the downstream cavity (15), the sealing ring (18) is fixedly installed at the bottom of the upstream cavity (17), and the sealing ring (18) is matched with the sealing groove (16).

5. The high efficiency particulate air filter test device of claim 1, wherein: The air cylinder (19) is fixedly installed at the top of the inner chamber of the detection box (1), the driving rod (20) is fixedly connected to the bottom output end of the air cylinder (19), and the driving rod (20) is fixedly installed at the top of the upstream cavity (17).

6. The high efficiency facemask particulate filtration test device of claim 5, wherein: The flexible hose (21) is fixedly connected between the left side of the upstream cavity (17) and the internal detection instrument of the detection box (1).

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