Air tightness detection device for dust collector

Abstract

The utility model discloses an air tightness detection device for a dust collector, which belongs to the technical field of air tightness detection of dust collectors, and is characterized in that the top of a bottom plate is fixedly connected with a control cabinet and a mounting rack respectively, and one side of the mounting rack is fixedly connected with a vacuum digital display meter, a vacuum generator and a pressure regulating valve filter respectively; the top of the bottom plate is fixedly connected with a stabilizing frame and a detection plate, the stabilizing frame is fixedly connected with an air cylinder, and the movable end of the air cylinder is fixedly connected with a connecting plate; according to the utility model, the communication valve can be inserted into the part to be detected, the vacuum generator can generate negative pressure or positive pressure when working, gas is filled into the part to be detected, and the vacuum digital display meter can continuously monitor the change of the pressure during the pressure maintaining period, so that the airtightness detection of the part to be detected is realized; the production and manufacturing cost of the detection equipment is effectively reduced, and the equipment is convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of vacuum cleaner air tightness testing technology, specifically an air tightness testing device for vacuum cleaners. Background Technology

[0002] A vacuum cleaner is a cleaning appliance that uses a motor to drive a fan to generate suction, thereby sucking dust, debris and other impurities into a dust collection container. It can effectively clean dust in different areas such as floors, carpets, and furniture surfaces, greatly reducing the labor intensity of manual cleaning. The airtightness test of a vacuum cleaner is an important step to ensure its sealing and performance.

[0003] In the prior art, a Chinese utility model patent discloses an airtightness detection device for a vacuum cleaner (publication number: CN213022195U), which includes a motor housing, an electric fan, an exhaust box, an exhaust port, a fan assembly, an air intake detection box, an air volume sensor, a pressure sensor, a filter, a dust collection chamber, an air inlet, an air intake port, an air intake pipe, a fan, fan blades, an indicator light, a switch, and rollers. The electric fan is fixedly installed at the center of the upper inner side of the front of the motor housing. The exhaust box is fixedly installed at the top of the motor housing. An exhaust port is opened on the left side of the exhaust box. Rollers are movably connected around the bottom of the motor housing. The fan assembly is fixedly installed at the upper end of the exhaust box. A fan is rotatably connected to the inner side of the fan assembly. Fan blades are fixedly connected around the outer side of the fan. The air intake detection box is fixedly installed at the upper end of the fan assembly. An air volume sensor and a pressure sensor are movably installed at both ends of the inner side of the air intake detection box.

[0004] In the aforementioned patent, by activating the electric fan, air can be used to carry dust into the air intake detection box. The air intake detection box is equipped with an airflow sensor and a pressure sensor. When the two are working, they can detect the airtightness of the vacuum cleaner. However, since the detection device is integrated inside the vacuum cleaner, its manufacturing cost is high. Moreover, if the detection device malfunctions, the entire vacuum cleaner needs to be disassembled and repaired, which is quite troublesome. Utility Model Content

[0005] This invention provides an airtightness testing device for vacuum cleaners, aiming to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an airtightness testing device for a vacuum cleaner, comprising a base plate, a control cabinet and a mounting frame fixedly connected to the top of the base plate, a vacuum digital display, a vacuum generator and a pressure regulating valve filter fixedly connected to one side of the mounting frame, a stabilizing frame and a testing plate fixedly connected to the top of the base plate, a cylinder fixedly connected to the stabilizing frame, a connecting plate fixedly connected to the movable end of the cylinder, a lifting plate fixedly connected to the top of the connecting plate, a connecting valve fixedly connected to the lifting plate, the connecting valve being located at the top of the testing plate, and a sealing gasket sleeved on the side surface of the connecting valve.

[0007] As a further optimization, the pressure regulating valve filter is connected to the vacuum generator via a pipeline, the vacuum generator is connected to the vacuum digital display via a pipeline, and the vacuum digital display is connected to the connecting valve via a pipeline.

[0008] As a further optimization, the detection plate has a sliding groove inside and a through groove on the top of the detection plate. The through groove is connected to the sliding groove. A sliding plate is slidably connected inside the sliding groove. A connecting post is fixedly connected to the sliding plate. The connecting post extends through the through groove to the top of the detection plate and is fixedly connected to a fixing plate.

[0009] As a further optimization, a first mounting block is fixedly connected to one side of the detection plate, and a bidirectional threaded rod is rotatably connected to the first mounting block. A threaded block is screwed onto the side surface of the bidirectional threaded rod, and one side of the threaded block is fixedly connected to one side of the slide plate.

[0010] As a further optimization, a motor is fixedly connected to the top of the base plate, and the output end of the motor is fixedly connected to one end of a bidirectional threaded rod.

[0011] As a further optimization, a second mounting block is fixedly connected to the side of the detection plate away from the first mounting block. A limit rod is fixedly connected to the second mounting block, and a limit block is slidably connected to the side surface of the limit rod. One side of the limit block is fixedly connected to the side of the slide plate away from the threaded block.

[0012] As a further optimization, an auxiliary groove is provided inside the slide, and a rotating shaft is fixedly connected inside the auxiliary groove. A roller is rotatably connected to the side surface of the rotating shaft, and the side surface of the roller contacts the inner wall of the slide groove.

[0013] Compared with the prior art, this utility model, through the arrangement of cylinder, lifting plate, connecting valve and sealing gasket, allows the connecting valve to be inserted into the interior of the part to be tested. When the vacuum generator is working, it can generate negative or positive pressure and fill the interior of the part to be tested with gas. During the pressure holding period, the vacuum digital display can continuously monitor the pressure change, thereby realizing the airtightness test of the part to be tested, effectively reducing the production and manufacturing cost of the testing equipment, and facilitating the maintenance of the equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the installation of the fixing plate of this utility model;

[0016] Figure 3 This is a cross-sectional view of the detection plate of this utility model;

[0017] Figure 4 for Figure 2 Enlarged view of point A in the image;

[0018] Figure 5 for Figure 3 Enlarged view of point B in the image.

[0019] In the diagram: 1. Base plate; 2. Control cabinet; 3. Mounting bracket; 4. Vacuum digital display; 5. Vacuum generator; 6. Pressure regulating valve filter; 7. Stabilizer; 8. Cylinder; 9. Connecting plate; 10. Lifting plate; 11. Connecting valve; 12. Sealing gasket; 13. Detection plate; 14. Slide groove; 15. Through groove; 16. Slide plate; 17. Connecting column; 18. Fixing plate; 19. First mounting block; 20. Bidirectional threaded rod; 21. Threaded block; 22. Motor; 23. Second mounting block; 24. Limit rod; 25. Limit block; 26. Auxiliary groove; 27. Roller. Detailed Implementation

[0020] 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.

[0021] This utility model provides an airtightness testing device for vacuum cleaners, such as... Figure 1 , Figure 2 and Figure 3 As shown, the system includes a base plate 1. A control cabinet 2 and a mounting bracket 3 are fixedly connected to the top of the base plate 1. A vacuum digital display 4, a vacuum generator 5, and a pressure regulating valve filter 6 are fixedly connected to one side of the mounting bracket 3. A stabilizing frame 7 and a detection plate 13 are fixedly connected to the top of the base plate 1. A cylinder 8 is fixedly connected to the stabilizing frame 7. A connecting plate 9 is fixedly connected to the movable end of the cylinder 8. A lifting plate 10 is fixedly connected to the top of the connecting plate 9. A connecting valve 11 is fixedly connected to the lifting plate 10. The connecting valve 11 is located on the top of the detection plate 13. A sealing gasket 12 is fitted on the side surface of the connecting valve 11.

[0022] The pressure regulating valve filter 6 is connected to the vacuum generator 5 through a pipeline. The vacuum generator 5 is connected to the vacuum digital display 4 through a pipeline. The vacuum digital display 4 is connected to the connecting valve 11 through a pipeline.

[0023] When using this testing device, the part to be tested needs to be placed on the testing plate 13, and then the cylinder 8 is activated, causing the lifting plate 10 to move down until the bottom end of the connecting valve 11 is inserted into the part to be tested. After the preparation is completed, the vacuum generator 5 can be activated. When the vacuum generator 5 is working, it can generate negative or positive pressure and fill the part to be tested with gas. After filling to the set pressure value, it enters the pressure holding stage. During the pressure holding period, the vacuum digital display 4 can continuously monitor the pressure change. If the pressure value does not drop significantly during the pressure holding period, it indicates that the airtightness of the tested part is good; otherwise, it indicates that there is a leak. The vacuum digital display 4 is electrically connected to the control cabinet 2. When the pressure value drops abnormally, the alarm on the top of the control cabinet 2 will be activated to remind the staff that there is a leak in the tested part.

[0024] Furthermore, in order to improve the stability of the parts under test, such as Figure 1 , Figure 2 and Figure 3 As shown, the detection plate 13 has a sliding groove 14 inside and a through groove 15 on the top of the detection plate 13. The through groove 15 is connected to the sliding groove 14. A sliding plate 16 is slidably connected inside the sliding groove 14. A connecting post 17 is fixedly connected to the sliding plate 16. The connecting post 17 extends through the through groove 15 to the top of the detection plate 13 and is fixedly connected to a fixing plate 18.

[0025] A first mounting block 19 is fixedly connected to one side of the detection plate 13. A bidirectional threaded rod 20 is rotatably connected to the first mounting block 19. A threaded block 21 is screwed onto the side surface of the bidirectional threaded rod 20. One side of the threaded block 21 is fixedly connected to one side of the slide plate 16.

[0026] A motor 22 is fixedly connected to the top of the base plate 1, and the output end of the motor 22 is fixedly connected to one end of the bidirectional threaded rod 20.

[0027] After the part to be tested is placed on the test plate 13, the motor 22 is started. The output end of the motor 22 can directly drive the bidirectional threaded rod 20 to rotate. When the bidirectional threaded rod 20 rotates, the threaded block 21 screwed to its side surface can drive the slide plate 16 to move inside the slide groove 14. When the slide plate 16 moves, it can drive the fixing plate 18 to move through the connecting column 17, so that the two fixing plates 18 can clamp and fix the part to be tested, improving the stability of the part to be tested during the test process.

[0028] It should be noted that, in order to improve the stability of the skateboard 16 during movement, such as Figure 1 , Figure 2 and Figure 3 As shown, a second mounting block 23 is fixedly connected to the side of the detection plate 13 away from the first mounting block 19. A limit rod 24 is fixedly connected to the second mounting block 23. A limit block 25 is slidably connected to the side surface of the limit rod 24. One side of the limit block 25 is fixedly connected to the side of the slide plate 16 away from the threaded block 21.

[0029] When the skateboard 16 moves, the limiting block 25 also slides on the side surface of the limiting rod 24. The limiting block 25, together with the limiting rod 24, provides a limiting effect for the skateboard 16 and also plays a guiding role, effectively improving the stability of the skateboard 16 when it moves.

[0030] Furthermore, to improve the smoothness of the skateboard 16's movement, such as... Figure 2 , Figure 4 and Figure 5 As shown, an auxiliary groove 26 is provided inside the slide plate 16. A rotating shaft is fixedly connected inside the auxiliary groove 26. A roller 27 is rotatably connected to the side surface of the rotating shaft. The side surface of the roller 27 is in contact with the inner wall of the slide groove 14.

[0031] When the slide plate 16 moves, the roller 27 rolls on the inner wall of the slide groove 14. This rolling contact can significantly reduce friction compared to sliding contact, thus making the movement of the slide plate 16 smoother. In addition, the roller 27 can effectively reduce wear between the slide plate 16 and the slide groove 14, which helps to extend the service life of the device.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An airtightness testing device for a vacuum cleaner, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to the control cabinet (2) and the mounting bracket (3). The mounting bracket (3) is fixedly connected to one side of the vacuum digital display (4), the vacuum generator (5) and the pressure regulating valve filter (6). The top of the base plate (1) is fixedly connected to the stabilizer (7) and the detection plate (13). The stabilizer (7) is fixedly connected to the cylinder (8). The movable end of the cylinder (8) is fixedly connected to the connecting plate (9). The top of the connecting plate (9) is fixedly connected to the lifting plate (10). The lifting plate (10) is fixedly connected to the connecting valve (11). The connecting valve (11) is located on the top of the detection plate (13). The side surface of the connecting valve (11) is fitted with a sealing gasket (12).

2. The airtightness testing device for a vacuum cleaner according to claim 1, characterized in that: The pressure regulating valve filter (6) is connected to the vacuum generator (5) through a pipe, the vacuum generator (5) is connected to the vacuum digital display (4) through a pipe, and the vacuum digital display (4) is connected to the connecting valve (11) through a pipe.

3. The airtightness testing device for a vacuum cleaner according to claim 1, characterized in that: The detection plate (13) has a sliding groove (14) inside and a through groove (15) at the top of the detection plate (13). The through groove (15) is connected to the sliding groove (14). A sliding plate (16) is slidably connected inside the sliding groove (14). A connecting post (17) is fixedly connected to the sliding plate (16). The connecting post (17) extends through the through groove (15) to the top of the detection plate (13) and is fixedly connected to a fixing plate (18).

4. The airtightness testing device for a vacuum cleaner according to claim 3, characterized in that: A first mounting block (19) is fixedly connected to one side of the detection plate (13). A bidirectional threaded rod (20) is rotatably connected to the first mounting block (19). A threaded block (21) is screwed onto the side surface of the bidirectional threaded rod (20). One side of the threaded block (21) is fixedly connected to one side of the slide plate (16).

5. The airtightness testing device for a vacuum cleaner according to claim 4, characterized in that: A motor (22) is fixedly connected to the top of the base plate (1), and the output end of the motor (22) is fixedly connected to one end of the bidirectional threaded rod (20).

6. The airtightness testing device for a vacuum cleaner according to claim 3, characterized in that: The detection plate (13) is fixedly connected to a second mounting block (23) on the side away from the first mounting block (19). A limit rod (24) is fixedly connected to the second mounting block (23). A limit block (25) is slidably connected to the side surface of the limit rod (24). One side of the limit block (25) is fixedly connected to the side of the slide plate (16) away from the threaded block (21).

7. The airtightness testing device for a vacuum cleaner according to claim 3, characterized in that: The slide plate (16) has an auxiliary groove (26) inside, and a rotating shaft is fixedly connected inside the auxiliary groove (26). A roller (27) is rotatably connected to the side surface of the rotating shaft, and the side surface of the roller (27) is in contact with the inner wall of the slide groove (14).

Images