Air tightness detection device for mechanical seal

Abstract

The utility model provides a mechanical seal air tightness detection device, which relates to the technical field of air tightness detection and comprises a bottom plate, a mounting plate is mounted at the top end of the bottom plate, a lower sealing plate is mounted above the mounting plate, fixing mechanisms are arranged on two sides of the top end of the mounting plate, and a material pump is mounted at the front end of a liquid storage cavity. One end of the transfer pump is communicated with one end of the liquid storage cavity, a corrugated pipe is mounted at the other end of the transfer pump, and a spray head is mounted at one end of the corrugated pipe; through mutual cooperation of the air pump, the liquid storage cavity, the transfer pump and the spray head, ventilation can be conducted on the interior of the mechanical sealing element, then liquid soap in the liquid storage cavity is sprayed to the connecting position of the mechanical sealing element, and the air tightness of the mechanical sealing element is judged by observing whether bubbling occurs or not. Therefore, the airtightness detection of the mechanical sealing element is more convenient and faster, and the convenience of the device in use is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, and in particular to an airtightness testing device for mechanical seals. Background Technology

[0002] A mechanical seal is a device that prevents fluid leakage by having at least one pair of end faces perpendicular to the axis of rotation, which remain in contact and slide relative to each other under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of auxiliary seals. When performing mechanical seals, it is necessary to perform airtightness testing.

[0003] For example, application number CN210375579U discloses "an airtightness testing device for a containerized mechanical seal," which specifically discloses that: two fixing plates are provided on the upper sides of the base, a sleeve is connected through the middle of the fixing plate, one side of the sleeve is connected to one end of the upper part of the base via a fixing bracket, a screw rod passes through the inside of the sleeve, one end of the screw rod is connected to a nut, one end of the screw rod abuts against one side of the containerized mechanical seal, an electric heating wire is wound and connected to the lower exterior of the containerized mechanical seal, the bottom end of the containerized mechanical seal abuts against a pressure pad, and the lower part of the pressure pad is connected to the base. The top of the containerized mechanical seal is connected to a pressure plate via a pressure pad. A cylinder is connected to the pressure plate via a piston rod. A sealing ring is provided inside the pressure plate, and a conduit is connected through the sealing ring. One end of the conduit is connected to the inside of a water tank. However, in the above technology, before testing, it is necessary to wrap the heating wire around the outside of the mechanical seal and then wait for it to heat up, which makes the airtightness test of the mechanical seal cumbersome and reduces the convenience of the device in use. Therefore, this utility model proposes an airtightness testing device for mechanical seals to solve the above problems. Utility Model Content

[0004] To address the aforementioned issues, this invention proposes an airtightness testing device for mechanical seals. This solves the problem that existing technologies require pre-winding a heating wire around the outside of the mechanical seal and then waiting for it to heat up, making the airtightness testing of the mechanical seal cumbersome and reducing the convenience of using the device.

[0005] To achieve the purpose of this utility model, the present utility model is implemented through the following technical solution: a mechanical seal airtightness testing device, including a base plate, an mounting plate installed at the top of the base plate, a lower sealing plate installed above the mounting plate, fixing mechanisms provided on both sides of the top of the mounting plate, a mounting frame installed at the rear end of the top of the base plate, a cylinder installed at the top of the mounting frame, an upper sealing plate rotatably installed at the bottom end of the cylinder, an air pump installed on one side of the top of the base plate, a hose connected to one end of the air pump, one end of the hose extending into the interior of the lower sealing plate, a liquid storage chamber installed on the other side of the top of the base plate, a stirring mechanism provided inside the liquid storage chamber, a feed inlet installed at the top of the liquid storage chamber, a pump installed at the front end of the liquid storage chamber, one end of the pump connected to one end of the liquid storage chamber, a bellows installed at the other end of the pump, and a nozzle installed at one end of the bellows.

[0006] A further improvement is that the fixing mechanism includes a side plate, a threaded groove, a threaded rod, a rotating wheel, a positioning plate, and a limiting structure. The side plate is installed on both sides of the top of the mounting plate. A threaded groove is opened through the inside of the side plate. A threaded rod is installed through the inside of the threaded groove. A rotating wheel is installed at one end of the threaded rod, and a positioning plate is rotatably installed at the other end of the threaded rod.

[0007] A further improvement is that the limiting structure includes a limiting groove and a limiting rod. The limiting groove is opened at both ends of both sides of the side plate, and the limiting rod is installed through the inside of the limiting groove. One end of the limiting rod is connected to one end of the positioning plate.

[0008] A further improvement is that the stirring mechanism includes a servo motor, a rotating shaft, and a stirring shaft. The servo motor is installed at the top of the liquid storage chamber, the rotating shaft is installed inside the liquid storage chamber, the output end of the servo motor is connected to one end of the rotating shaft, and the outer wall of the rotating shaft is provided with a stirring shaft.

[0009] A further improvement is that multiple stirring shafts are provided on the outer side wall of the rotating shaft, and the multiple stirring shafts are distributed at equal intervals on the outer side wall of the rotating shaft.

[0010] A further improvement is that a fixing groove is provided inside the base plate, and a movable block is provided inside the fixing groove. The top of the movable block is connected to the bottom of the mounting plate.

[0011] The beneficial effects of this utility model are as follows: By configuring the air pump, liquid storage chamber, material pump, and nozzle in cooperation, air can be vented into the mechanical seal. Then, soapy water from the liquid storage chamber is sprayed onto the connection of the mechanical seal. The airtightness of the mechanical seal is judged by observing whether bubbles form. Therefore, it is more convenient and faster to test the airtightness of the mechanical seal, thus greatly improving the ease of use of the device. By setting a fixing mechanism above the mounting plate, the mechanical seal can be fixed during airtightness testing by utilizing the cooperation between the side plate, threaded groove, threaded rod, rotating wheel, positioning plate, limiting groove, and limiting rod of the fixing mechanism. This makes the mechanical seal more stable during testing, resulting in better airtightness testing results and greatly improving the practicality of the device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the overall structure of the fixing groove of this utility model;

[0014] Figure 3 This is a schematic diagram of the overall structure of the fixing mechanism of this utility model;

[0015] Figure 4 This is a schematic diagram of the overall structure of the stirring mechanism of this utility model.

[0016] The components are as follows: 1. Base plate; 2. Mounting plate; 3. Lower sealing plate; 4. Mounting bracket; 5. Cylinder; 6. Upper sealing plate; 7. Air pump; 8. Liquid storage chamber; 9. Material pump; 10. Nozzle; 11. Fixed groove; 12. Movable block; 13. Side plate; 14. Threaded groove; 15. Threaded rod; 16. Rotary wheel; 17. Positioning plate; 18. Limiting groove; 19. Limiting rod; 20. Servo motor; 21. Rotating shaft; 22. Stirring shaft; 23. Feed inlet. Detailed Implementation

[0017] To enhance understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are for illustrative purposes only and do not constitute a limitation on the scope of protection of this utility model.

[0018] according to Figure 1 , 2As shown in Figures 3 and 4, this embodiment proposes an airtightness testing device for a mechanical seal, including a base plate 1. A mounting plate 2 is installed at the top of the base plate 1, and a lower sealing plate 3 is installed above the mounting plate 2. Fixing mechanisms are provided on both sides of the top of the mounting plate 2. A mounting bracket 4 is installed at the rear end of the top of the base plate 1, and a cylinder 5 is installed at the top of the mounting bracket 4. An upper sealing plate 6 is rotatably mounted at the bottom end of the cylinder 5. An air pump 7 is installed on one side of the top of the base plate 1, and a flexible hose is connected to one end of the air pump 7. One end of the flexible hose extends into the lower sealing plate 3. A liquid storage chamber 8 is installed on the other side of the top of the base plate 1, and a stirring mechanism is provided inside the liquid storage chamber 8. The top of the device is equipped with a feed inlet 23, and the front end of the liquid storage chamber 8 is equipped with a pump 9. One end of the pump 9 is connected to one end of the liquid storage chamber 8, and the other end of the pump 9 is equipped with a bellows. One end of the bellows is equipped with a nozzle 10. In use, the cylinder 5 is started to drive the upper sealing plate 6 to move downward. The lower sealing plate 3 and the upper sealing plate 6 are used to seal the mechanical seal. At this time, the air pump 7 is started to introduce gas into the mechanical seal through the pipeline. Then the pump 9 is started to draw the soap solution water in the liquid storage chamber 8 into the nozzle 10 through the bellows. The nozzle 10 is used to spray the soap solution water onto the connection of the mechanical seal. The airtightness of the mechanical seal is judged by observing whether the soap solution water bubbles.

[0019] The fixing mechanism includes a side plate 13, a threaded groove 14, a threaded rod 15, a rotating wheel 16, a positioning plate 17, and a limiting structure. The side plate 13 is installed on both sides of the top of the mounting plate 2. The side plate 13 has a threaded groove 14 running through its interior. The threaded rod 15 runs through the interior of the threaded groove 14. One end of the threaded rod 15 is fitted with the rotating wheel 16, and the other end of the threaded rod 15 is rotatably fitted with the positioning plate 17. In use, the mechanical seal is placed above the lower sealing plate 3, and then the rotating wheel 16 is rotated to drive the threaded rod 15 to rotate. This causes the threaded rod 15 to move inside the threaded groove 14. Under the limiting of the limiting groove 18 and the limiting rod 19, the threaded rod 15 drives the positioning plate 17 to move. The two positioning plates 17 then fix the mechanical seal, making the mechanical seal more stable during testing. This results in better airtightness testing of the mechanical seal and greatly improves the practicality of the device in use.

[0020] The limiting structure includes a limiting groove 18 and a limiting rod 19. The limiting groove 18 is opened at both ends of the side plate 13. The limiting rod 19 is installed through the inside of the limiting groove 18. One end of the limiting rod 19 is connected to one end of the positioning plate 17. In use, the mutual cooperation between the limiting groove 18 and the limiting rod 19 can limit the movement of the positioning plate 17, making the positioning plate 17 more stable when moving.

[0021] The stirring mechanism includes a servo motor 20, a rotating shaft 21, and a stirring shaft 22. The servo motor 20 is installed at the top of the liquid storage chamber 8, and the rotating shaft 21 is installed inside the liquid storage chamber 8. The output end of the servo motor 20 is connected to one end of the rotating shaft 21. The outer wall of the rotating shaft 21 is provided with a stirring shaft 22. Multiple stirring shafts 22 are provided on the outer wall of the rotating shaft 21, and the multiple stirring shafts 22 are distributed at equal intervals on the outer wall of the rotating shaft 21. In use, soap and water are put into the liquid storage chamber 8, and then the servo motor 20 is started to drive the rotating shaft 21 to rotate, thus driving the stirring shaft 22 to rotate. The stirring shaft 22 is used to stir the soap and water to make soap liquid water, making the production of soap liquid water more convenient and faster.

[0022] The base plate 1 has a fixed groove 11 inside, and a movable block 12 is provided inside the fixed groove 11. The top of the movable block 12 is connected to the bottom of the mounting plate 2. In use, the mechanical seal can be easily rotated by the cooperation between the fixed groove 11 and the movable block 12, making it more convenient and faster to perform airtightness testing on the mechanical seal.

[0023] Working principle: First, the operator puts soap and water into the storage chamber 8. Then, the servo motor 20 is started to drive the rotating shaft 21 to rotate, which in turn drives the stirring shaft 22 to rotate. The stirring shaft 22 is used to stir the soap and water to make soap solution. The mechanical seal is placed above the lower sealing plate 3. Then, the rotating wheel 16 is rotated to drive the threaded rod 15 to rotate, which causes the threaded rod 15 to move inside the threaded groove 14. Under the limitation of the limiting groove 18 and the limiting rod 19, the threaded rod 15 drives the positioning plate 17 to move. The two positioning plates 17 are used to fix the mechanical seal. Then, the cylinder 5 is started to drive the upper sealing plate 6 to move downwards, using the lower sealing plate 3 and the upper sealing plate 6 to move downwards. The sealing plate 6 seals the mechanical seal. At this time, the air pump 7 is started, and gas is introduced into the mechanical seal through the pipeline. Then, the pump 9 is started to draw the soap solution water in the storage chamber 8 into the nozzle 10 through the corrugated pipe. The nozzle 10 sprays the soap solution water onto the connection of the mechanical seal. Since the upper sealing plate 6 is rotatably installed at the bottom of the cylinder 5, the mechanical seal can be rotated to perform a comprehensive inspection with the cooperation of the fixed groove 11 and the movable block 12. The airtightness of the mechanical seal is judged by observing whether the soap solution water bubbles. After the inspection is completed, the cylinder 5 is started to move the upper sealing plate 6 upward, and the reverse rotating wheel 16 moves the two positioning plates 17 to the sides, so that the mechanical seal can be removed.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanical seal leak detection device comprising a base plate (1), characterised in that: A mounting plate (2) is installed at the top of the base plate (1), and a lower sealing plate (3) is installed above the mounting plate (2). Fixing mechanisms are provided on both sides of the top of the mounting plate (2). A mounting bracket (4) is installed at the rear end of the top of the base plate (1). A cylinder (5) is installed at the top of the mounting bracket (4). An upper sealing plate (6) is rotatably installed at the bottom end of the cylinder (5). An air pump (7) is installed on one side of the top of the base plate (1). One end of the air pump (7) is connected to a hose. One end extends into the interior of the lower sealing plate (3) and the other side of the top of the bottom plate (1) is equipped with a liquid storage chamber (8). The liquid storage chamber (8) is equipped with a stirring mechanism. The top of the liquid storage chamber (8) is equipped with a feed inlet (23). The front end of the liquid storage chamber (8) is equipped with a pump (9). One end of the pump (9) is connected to one end of the liquid storage chamber (8). The other end of the pump (9) is equipped with a bellows. One end of the bellows is equipped with a nozzle (10).

2. The mechanical seal gas tightness detection device according to claim 1, characterized in that: The fixing mechanism includes a side plate (13), a threaded groove (14), a threaded rod (15), a rotating wheel (16), a positioning plate (17), and a limiting structure. The side plate (13) is installed on both sides of the top of the mounting plate (2). The side plate (13) has a threaded groove (14) through it. The threaded rod (15) is installed through it. One end of the threaded rod (15) is equipped with a rotating wheel (16), and the other end of the threaded rod (15) is rotatably equipped with a positioning plate (17).

3. The apparatus of claim 2, wherein: The limiting structure includes a limiting groove (18) and a limiting rod (19). The limiting groove (18) is opened at both ends of the side plate (13). The limiting rod (19) is installed through the inside of the limiting groove (18). One end of the limiting rod (19) is connected to one end of the positioning plate (17).

4. The mechanical seal gas tightness detection device according to claim 1, characterized in that: The stirring mechanism includes a servo motor (20), a rotating shaft (21) and a stirring shaft (22). The servo motor (20) is installed at the top of the liquid storage chamber (8), and the rotating shaft (21) is installed inside the liquid storage chamber (8). The output end of the servo motor (20) is connected to one end of the rotating shaft (21), and the stirring shaft (22) is provided on the outer side wall of the rotating shaft (21).

5. A mechanical seal gas leakage detection device according to claim 4, wherein: Multiple stirring shafts (22) are provided on the outer side wall of the rotating shaft (21), and the multiple stirring shafts (22) are distributed at equal intervals on the outer side wall of the rotating shaft (21).

6. The mechanical seal gas tightness detection device according to claim 1, characterized in that: The base plate (1) has a fixing groove (11) inside, and a movable block (12) is provided inside the fixing groove (11). The top of the movable block (12) is connected to the bottom of the mounting plate (2).

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