Detection table for screw vacuum pump production

Abstract

The utility model provides a detection table for screw vacuum pump production, which relates to the technical field of screw vacuum pumps and comprises a placing table, a screw vacuum pump body is mounted at the top end of the placing table, a connecting seat is mounted on one side of the top end of the screw vacuum pump body, and a moving mechanism is arranged in a mounting cavity. An air injection mechanism is arranged above the mounting cavity; according to the helium mass spectrometer leak detector, the air injection mechanisms are arranged above the mounting cavity, the air injection mechanisms are matched with one another, air injection treatment can be automatically carried out on the possible leakage position of the screw vacuum pump body through the spray head, and when the air makes contact with the leakage position, the air can be sucked into the screw vacuum pump body and enters the helium mass spectrometer leak detector along with air flow; when the detection table is used, data on the helium mass spectrometer leak detector fluctuates, an alarm is given out, the detection result of the screw vacuum pump body is more accurate, and therefore the accuracy of the detection table in use is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of screw vacuum pump technology, and in particular to a testing platform for screw vacuum pump production. Background Technology

[0002] Screw vacuum pumps are pumping devices that use a pair of screws to rotate synchronously and at high speed in opposite directions in the pump casing to generate suction and exhaust. They are a replacement product for oil-sealed vacuum pumps and can pump gases containing a large amount of water vapor and a small amount of dust. They are widely used in domestic pharmaceutical, chemical, semiconductor and other industries with high requirements for clean vacuum.

[0003] For example, application number CN117686157A discloses an airtightness testing device for a vacuum pump assembly line, which includes a workbench set on one side of the assembly line and used to provide a testing platform; a sealed chamber located on the workbench and used to seal and store the vacuum pump to be tested; a gas guide pipe, one end of which is fixedly connected to the sealed chamber; and a water tank set on the workbench and filled with bubble solution, with the other end of the gas guide pipe stably inserted into the bubble solution. However, this device requires pre-injecting gas with a pressure higher than the ambient air pressure into the vacuum pump, and during use, due to slow leakage, the formation of bubbles cannot be observed, resulting in inaccurate testing and reducing the accuracy of the testing platform. Therefore, this utility model proposes a testing platform for screw vacuum pump production to solve the above problems. Utility Model Content

[0004] To address the aforementioned issues, this utility model proposes a testing station for screw vacuum pump production, which solves the problem in the prior art where slow leakage makes it impossible to observe the generated bubbles, resulting in inaccurate testing and reduced convenience and accuracy during use.

[0005] To achieve the purpose of this utility model, the present utility model is implemented through the following technical solution: a testing platform for screw vacuum pump production, including a placement platform, a screw vacuum pump body installed on the top of the placement platform, a connecting seat installed on one side of the top of the screw vacuum pump body, a helium mass spectrometer leak detector installed on one side of the top of the placement platform, a controller installed on one side of the helium mass spectrometer leak detector, one end of the helium mass spectrometer leak detector being connected to one end of the connecting seat via a connecting hose, and mounting cavities installed at both the front and rear ends of the top of the placement platform, a moving mechanism being provided inside the mounting cavity, and a jetting mechanism being provided above the mounting cavity;

[0006] The jetting mechanism includes a mounting plate, a nozzle, a helium chamber, a jetting hose, and a moving assembly. The mounting plate is positioned above the mounting chamber, and a moving assembly is located at one end of the mounting plate. A nozzle is mounted at one end of the moving assembly. The helium chamber is mounted on the top of the placement platform, and a jetting hose is mounted on the top of the helium chamber. One end of the jetting hose is connected to one end of the nozzle.

[0007] A further improvement is that two nozzles are provided above the placement platform, and the two nozzles are symmetrically distributed about the central axis of the placement platform.

[0008] A further improvement is that the moving component includes an electromagnetic slide rail, an electromagnetic slider, and an electric push rod. The electromagnetic slide rail is installed at one end of the mounting plate, and an electromagnetic slider is provided on the outer side wall of the electromagnetic slide rail. An electric push rod is installed at one end of the electromagnetic slider, and one end of the electric push rod is connected to one end of the nozzle.

[0009] A further improvement is made in that: the moving mechanism includes a servo motor, a threaded rod, a threaded sleeve, and a limiting structure. The servo motor is installed at one end of the mounting cavity, the threaded rod is installed at the top inside the mounting cavity, the output end of the servo motor is connected to one end of the threaded rod, the outer wall of the threaded rod is provided with a threaded sleeve, and the top end of the threaded sleeve is connected to the bottom end of the mounting plate.

[0010] A further improvement is that the limiting structure includes a limiting groove and a limiting block. The limiting groove is located below the mounting cavity, and the limiting block is provided inside the limiting groove. The top end of the limiting block is connected to the bottom end of the threaded sleeve.

[0011] A further improvement is that the cross-section of the limiting groove is larger than the cross-section of the limiting block, and the limiting groove and the limiting block form a sliding structure.

[0012] The beneficial effects of this utility model are as follows: By setting an air jet mechanism above the mounting cavity, and utilizing the cooperation between the mounting plate, nozzle, helium chamber, air jet hose, electromagnetic slide rail, electromagnetic slider, and electric push rod of the air jet mechanism, the nozzle can automatically jet gas to areas where the screw vacuum pump body may leak. When the gas comes into contact with the leak, it is drawn into the interior of the screw vacuum pump body and enters the interior of the helium mass spectrometer leak detector with the airflow, causing fluctuations in the data on the helium mass spectrometer leak detector and triggering an alarm. This makes the detection results of the screw vacuum pump body more accurate, thereby greatly improving the accuracy of the detection station during use. By setting a moving mechanism inside the mounting cavity, and utilizing the cooperation between the servo motor, threaded rod, threaded sleeve, limiting groove, and limiting block of the moving mechanism, the mounting plate can be moved, which in turn moves the nozzle. This allows the nozzle to perform more comprehensive detection of the screw vacuum pump body, thereby greatly improving the practicality of the detection station during use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall structure of the jet mechanism of this utility model;

[0015] Figure 3 This is a schematic diagram of the overall structure of the moving mechanism of this utility model.

[0016] The components include: 1. Placement platform; 2. Screw vacuum pump body; 3. Connecting seat; 4. Helium mass spectrometer leak detector; 5. Controller; 6. Connecting hose; 7. Mounting cavity; 8. Mounting plate; 9. Nozzle; 10. Helium chamber; 11. Jet hose; 12. Electromagnetic slide rail; 13. Electromagnetic slider; 14. Electric push rod; 15. Servo motor; 16. Threaded rod; 17. Threaded sleeve; 18. Limiting groove; 19. Limiting block. Detailed Implementation

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

[0018] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a testing station for screw vacuum pump production, including a placement platform 1. A screw vacuum pump body 2 is installed on the top of the placement platform 1. A connecting seat 3 is installed on one side of the top of the screw vacuum pump body 2. A helium mass spectrometer leak detector 4 is installed on one side of the top of the placement platform 1. A controller 5 is installed on one side of the helium mass spectrometer leak detector 4. One end of the helium mass spectrometer leak detector 4 is connected to one end of the connecting seat 3 through a connecting hose 6. An installation cavity 7 is installed at both the front and rear ends of the top of the placement platform 1. A moving mechanism is provided inside the installation cavity 7. An air jet mechanism is provided above the installation cavity 7.

[0019] The jetting mechanism includes a mounting plate 8, a nozzle 9, a helium chamber 10, a jet hose 11, and a moving assembly. The mounting plate 8 is positioned above the mounting chamber 7. A moving assembly is located at one end of the mounting plate 8, and the nozzle 9 is mounted at one end of the moving assembly. The helium chamber 10 is mounted on the top of the placement platform 1, and the jet hose 11 is mounted on the top of the helium chamber 10. One end of the jet hose 11 is connected to one end of the nozzle 9. Two nozzles 9 are positioned above the placement platform 1, symmetrically distributed about the central axis of the placement platform 1. The moving assembly includes an electromagnetic slide rail 12, an electromagnetic slider 13, and an electric push rod 14. The electromagnetic slide rail 12 is mounted on one end of the mounting plate 8, and the electromagnetic slider 13 is located on the outer wall of the electromagnetic slide rail 12. One end of the device is equipped with an electric push rod 14, which is connected to one end of the nozzle 9. In use, the helium chamber 10 circulates gas into the nozzle 9 through the jet hose 11. Then, the electric push rod 14 is activated, which moves the nozzle 9 to one side of the screw vacuum pump body 2. At this time, the electromagnetic slide rail 12 is activated, which moves the electromagnetic slider 13, thereby moving the nozzle 9 downward. The nozzle 9 is moved to the place where the screw vacuum pump body 2 may leak, i.e., the connection point. When a leak is detected, the gas is drawn into the interior of the screw vacuum pump body 2 and enters the interior of the helium mass spectrometer leak detector 4 with the airflow. This causes the data on the helium mass spectrometer leak detector 4 to fluctuate, triggering an alarm. This makes the detection results of the screw vacuum pump body 2 more accurate, thereby greatly improving the accuracy of the detection station in use.

[0020] The moving mechanism includes a servo motor 15, a threaded rod 16, a threaded sleeve 17, and a limiting structure. The servo motor 15 is installed at one end of the mounting cavity 7, and the threaded rod 16 is installed above the inside of the mounting cavity 7. The output end of the servo motor 15 is connected to one end of the threaded rod 16. The outer wall of the threaded rod 16 is provided with a threaded sleeve 17, and the top end of the threaded sleeve 17 is connected to the bottom end of the mounting plate 8. In use, the servo motor 15 is started to drive the threaded rod 16 to rotate. Therefore, under the limiting position of the limiting groove 18 and the limiting block 19, the threaded rod 16 drives the threaded sleeve 17 to move, thereby driving the mounting plate 8 and the nozzle 9 to move. The nozzle 9 is used to perform a more comprehensive inspection of the screw vacuum pump body 2, thereby greatly improving the practicality of the inspection station in use.

[0021] The limiting structure includes a limiting groove 18 and a limiting block 19. The limiting groove 18 is located below the mounting cavity 7. The limiting block 19 is disposed inside the limiting groove 18. The top end of the limiting block 19 is connected to the bottom end of the threaded sleeve 17. The cross-section of the limiting groove 18 is larger than the cross-section of the limiting block 19. The limiting groove 18 and the limiting block 19 form a sliding structure. In use, the mutual cooperation between the limiting groove 18 and the limiting block 19 can limit the movement of the threaded sleeve 17, making the threaded sleeve 17 more stable when moving.

[0022] Working principle: The operator first places the screw vacuum pump body 2 on one side of the top of the placement platform 1 and seals the screw vacuum pump body 2. Then, the machine evacuates the screw vacuum pump body 2. After evacuation, the helium mass spectrometer leak detector 4 is connected to the connector 3 through the connecting hose 6. At this time, the helium chamber 10 is vented into the nozzle 9 through the jet hose 11. Then, the electric push rod 14 is activated, which moves the nozzle 9 to one side of the screw vacuum pump body 2. At this time, the electromagnetic slide rail 12 is activated, which moves the electromagnetic slider 13, thereby moving the nozzle 9 downwards. The machine moves to the point where a leak might occur in the screw vacuum pump body 2, i.e., the connection point. Then, the servo motor 15 is started to drive the threaded rod 16 to rotate. Under the limit of the limit groove 18 and the limit block 19, the threaded rod 16 drives the threaded sleeve 17 to move, which in turn drives the mounting plate 8 and the nozzle 9 to move. The nozzle 9 is used to perform a more comprehensive inspection of the screw vacuum pump body 2. When a leak point is detected, the gas will be drawn into the interior of the screw vacuum pump body 2 and enter the interior of the helium mass spectrometer leak detector 4 with the airflow, causing the data on the helium mass spectrometer leak detector 4 to fluctuate and trigger an alarm.

[0023] 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 testing platform for screw vacuum pump production, comprising a placement platform (1), characterized in that: The top of the placement platform (1) is equipped with a screw vacuum pump body (2), and a connecting seat (3) is installed on one side of the top of the screw vacuum pump body (2). A helium mass spectrometer leak detector (4) is installed on one side of the top of the placement platform (1), and a controller (5) is installed on one side of the helium mass spectrometer leak detector (4). One end of the helium mass spectrometer leak detector (4) is connected to one end of the connecting seat (3) through a connecting hose (6). The front and rear ends of the top of the placement platform (1) are equipped with mounting cavities (7). A moving mechanism is provided inside the mounting cavity (7), and a jetting mechanism is provided above the mounting cavity (7). The jetting mechanism includes a mounting plate (8), a nozzle (9), a helium chamber (10), a jetting hose (11), and a moving component. The mounting plate (8) is located above the mounting chamber (7). A moving component is provided at one end of the mounting plate (8), and a nozzle (9) is installed at one end of the moving component. The helium chamber (10) is installed at the top of the placement platform (1), and a jetting hose (11) is installed at the top of the helium chamber (10). One end of the jetting hose (11) is connected to one end of the nozzle (9).

2. The testing bench for screw vacuum pump production according to claim 1, characterized in that: Two nozzles (9) are provided above the placement platform (1), and the two nozzles (9) are symmetrically distributed about the central axis of the placement platform (1).

3. The testing bench for screw vacuum pump production according to claim 2, characterized in that: The moving component includes an electromagnetic slide rail (12), an electromagnetic slider (13), and an electric push rod (14). The electromagnetic slide rail (12) is installed on one end of the mounting plate (8). An electromagnetic slider (13) is provided on the outer side wall of the electromagnetic slide rail (12). An electric push rod (14) is installed on one end of the electromagnetic slider (13). One end of the electric push rod (14) is connected to one end of the nozzle (9).

4. The testing bench for screw vacuum pump production according to claim 1, characterized in that: The moving mechanism includes a servo motor (15), a threaded rod (16), a threaded sleeve (17), and a limiting structure. The servo motor (15) is installed at one end of the mounting cavity (7), and the threaded rod (16) is installed above the inside of the mounting cavity (7). The output end of the servo motor (15) is connected to one end of the threaded rod (16). The outer wall of the threaded rod (16) is provided with a threaded sleeve (17), and the top end of the threaded sleeve (17) is connected to the bottom end of the mounting plate (8).

5. The testing bench for screw vacuum pump production according to claim 4, characterized in that: The limiting structure includes a limiting groove (18) and a limiting block (19). The limiting groove (18) is located below the mounting cavity (7). The limiting block (19) is provided inside the limiting groove (18). The top end of the limiting block (19) is connected to the bottom end of the threaded sleeve (17).

6. The testing bench for screw vacuum pump production according to claim 5, characterized in that: The cross-section of the limiting groove (18) is larger than the cross-section of the limiting block (19), and the limiting groove (18) and the limiting block (19) form a sliding structure.

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