A frame structure of an air tightness testing apparatus

Abstract

The utility model relates to airtightness detection equipment field, concretely to a kind of frame structure of airtightness detection equipment, including chassis and gas tank, and the inner bottom wall of chassis is equipped with moving groove, and moving groove is slidably connected with moving seat, and moving seat is equipped with the fixed component for being used to fix gas tank, and the moving component for being used to move moving seat is provided on chassis, and gas tank is extracted from inside chassis by moving seat, and top frame and workbench are fixedly connected on chassis, and the seal cover is provided in top frame, and the lifting component for being used to lift and move seal cover is provided on top frame, and moving seat is driven to slide along moving groove transversely by the moving component of motor, screw rod, slider, and in combination with the design of the opening of four sides of chassis, the opening of one end of moving groove, gas tank can be extracted from inside chassis with moving seat as a whole, without pulling gas tank in narrow frame body, worker can conveniently complete the placement and disassembly replacement of gas tank, and the replacement efficiency of gas tank is significantly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of airtightness testing equipment, and specifically to a frame structure for an airtightness testing equipment. Background Technology

[0002] In refrigeration systems, the condensing pressure regulating valve plays a crucial role, its main function being to ensure that the condensing pressure is always maintained within the set normal range. Excessive condensing pressure can damage refrigeration equipment and increase energy consumption, while excessively low condensing pressure can interfere with the refrigerant liquefaction process, affecting the operation of the expansion valve, and consequently leading to a significant decrease in refrigeration system efficiency. Therefore, automotive condensing pressure regulating valves require airtightness testing using airtightness testing equipment before leaving the factory.

[0003] Chinese patent CN216717736U discloses a closed airtightness testing platform. It uses a closed testing tank to perform positive and negative pressure tests on the airtightness of devices, achieving multi-functional airtightness testing. It is simple to operate, safe and efficient.

[0004] The above solution uses gas cylinders to fill the device with gas to conduct air tightness testing. However, the gas cylinders containing inert gas have a certain weight. When they are stored inside the frame, the cylinders need to be pulled and moved laterally. The space inside the frame is small, which makes it difficult for workers to easily replace the gas cylinders.

[0005] Therefore, this utility model provides a frame structure for an airtightness testing device to solve the above problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the prior art, this utility model provides a frame structure for an airtightness testing device. This solves the problem that when a gas cylinder containing inert gas has a certain weight and is stored inside the frame, it is necessary to pull and move the gas cylinder laterally. However, the space inside the frame is small, which is not conducive to workers' convenient replacement of the air cylinder.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A frame structure for an airtightness testing device includes a base frame and an air tank. The inner bottom wall of the base frame has a movable groove, and a movable seat is slidably connected in the movable groove. The movable seat is provided with a fixing component for fixing the air tank. The base frame is provided with a movable component for moving the movable seat, and the air tank is pulled out from the base frame by moving the movable seat. A top frame and a worktable are fixedly connected to the base frame. A sealing cover is provided in the top frame, and a lifting component is provided on the top frame for raising and lowering the sealing cover.

[0008] Preferably, the fixing component includes two guide rods fixedly connected to the movable seat and a limiting plate disposed above the movable seat. The two ends of the limiting plate are slidably connected to the two guide rods respectively. The limiting plate is provided with an adapter groove, and the limiting plate is slidably connected to the gas tank through the adapter groove.

[0009] Preferably, a limit ring is fixedly connected to both guide rods.

[0010] Preferably, the moving component includes a motor mounted on a base frame, a sliding groove is provided on the inner bottom wall of the moving slot, a screw is mounted on the output shaft of the motor and the screw is rotatably connected in the sliding groove, a slider is threaded onto the screw and the top end of the slider is fixedly connected to the moving base.

[0011] Preferably, two guide blocks are fixedly connected to the base frame, and guide grooves are provided on the side of the two guide blocks that are close to each other, and the two ends of the movable seat are slidably connected in the two guide grooves respectively.

[0012] Preferably, a sealing ring is fixedly connected to the upper surface of the workbench, and the sealing ring matches the bottom end of the sealing cover.

[0013] Preferably, the lifting assembly includes an electric push rod mounted on the top frame, a fixing plate is embedded in the upper surface of the sealing cover, and the telescopic end of the electric push rod is detachably mounted on the fixing plate.

[0014] Preferably, the telescopic end of the electric push rod is fixedly connected to a lifting plate, and a bolt rod is fixedly connected to the fixed plate. The top end of the bolt rod passes through the lifting plate and is threaded with a nut.

[0015] Preferably, the sealing cover is fixedly connected to an air extraction pipe, and the air extraction pipe is connected to an air extraction pump.

[0016] The beneficial effects of this utility model are as follows: 1. The moving assembly consisting of a motor, screw, and slider drives the moving seat to slide laterally along the moving slot. Combined with the design of openings on four sides of the base frame and one end of the moving slot, the gas cylinder can be pulled out of the base frame as a whole along with the moving seat. There is no need to pull the gas cylinder out of the narrow frame. Workers can easily place, disassemble, and replace the gas cylinder, which significantly improves the efficiency of gas cylinder replacement.

[0017] 2. By setting a fixed component, the limiting plate is longitudinally guided by the guide rod. The limiting plate is fitted with the outer surface of the gas tank to achieve the limiting. The limiting ring at the middle end of the guide rod supports the limiting plate, which can effectively prevent the gas tank from shaking or shifting during movement or testing. Attached Figure Description

[0018] Figure 1 The three-dimensional representation of this utility model Figure 1 .

[0019] Figure 2 The three-dimensional representation of this utility model Figure 2 .

[0020] Figure 3 The three-dimensional representation of this utility model Figure 3 .

[0021] Figure 4 This is a cross-sectional view of the present invention.

[0022] In the diagram: 1. Base frame; 2. Top frame; 3. Moving groove; 4. Moving seat; 5. Gas tank; 6. Workbench; 7. Sealing ring; 8. Sealing cover; 9. Extraction pipe; 10. Guide block; 11. Guide groove; 12. Slide groove; 13. Motor; 14. Screw; 15. Slider; 16. Guide rod; 17. Limiting plate; 18. Adaptor groove; 19. Limiting ring; 20. Electric push rod; 21. Lifting plate; 22. Fixing plate; 23. Bolt rod; 24. Nut. Detailed Implementation

[0023] The following will refer to the attached reference. Figures 1 to 4 The various embodiments of this utility model will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this utility model and are not intended to limit the scope of protection of this utility model.

[0024] A frame structure for an airtightness testing device includes a base frame 1 and an air tank 5. The inner bottom wall of the base frame 1 is provided with a moving groove 3, and a moving seat 4 is slidably connected in the moving groove 3. A fixing component for fixing the air tank 5 is provided on the moving seat 4.

[0025] The base frame 1 is a frame structure with openings on all four sides. The moving groove 3 is a groove with one end open. The moving seat 4 can slide laterally inside the moving groove 3, and the gas tank 5 is installed on top of the moving seat 4.

[0026] In this embodiment, the fixing component includes two guide rods 16 fixedly connected to the movable seat 4 and a limiting plate 17 disposed above the movable seat 4. The two ends of the limiting plate 17 are slidably connected to the two guide rods 16 respectively. An adapter groove 18 is provided on the limiting plate 17, and the limiting plate 17 is slidably connected to the gas tank 5 through the adapter groove 18.

[0027] The limiting plate 17 slides longitudinally on the guide rod 16 and is fitted onto the outer surface of the gas tank 5 through the adapter groove 18 to limit the gas tank 5. After the limiting plate 17 is removed from the gas tank 5, the limitation on the gas tank 5 can be released.

[0028] Each of the two guide rods 16 is fixedly connected to a limiting ring 19, which is located at the middle of the guide rod 16. The limiting ring 19 supports the limiting plate 17 when limiting the gas tank 5.

[0029] In this embodiment, a moving component for moving the movable seat 4 is provided on the base frame 1, and the gas tank 5 is pulled out from the base frame 1 by moving the movable seat 4. The moving component includes a motor 13 mounted on the base frame 1, a sliding groove 12 is provided on the inner bottom wall of the moving groove 3, a screw 14 is mounted on the output shaft of the motor 13, and the screw 14 is rotatably connected in the sliding groove 12. A slider 15 is threadedly connected to the screw 14, and the top end of the slider 15 is fixedly connected to the movable seat 4.

[0030] The output shaft of motor 13 drives screw 14 to rotate, and causes slider 15 to move inside slide groove 12, thereby causing slider 15 to drive moving seat 4 to move laterally, which can push gas tank 5 on moving seat 4 out of base frame 1 or store gas tank 5 on moving seat 4 inside base frame 1.

[0031] In this embodiment, two guide blocks 10 are fixedly connected to the base frame 1. Guide grooves 11 are provided on the side of the two guide blocks 10 that are close to each other, and the two ends of the movable seat 4 are slidably connected to the two guide grooves 11 respectively.

[0032] The two guide grooves 11 guide the movable seat 4 in the moving state and also support the movable seat 4 when one end of the movable seat 4 is moved off the base frame 1.

[0033] In this embodiment, a top frame 2 and a worktable 6 are fixedly connected to the base frame 1. A sealing cover 8 is provided inside the top frame 2. A sealing ring 7 is fixedly connected to the upper surface of the worktable 6, and the sealing ring 7 matches the bottom end of the sealing cover 8.

[0034] The testing fixture and testing instrument are installed on the workbench 6. When the sealing cover 8 is lowered, it will abut against the workbench 6. At this time, the valve body, testing fixture and testing instrument are all located inside the sealing cover 8, achieving the effect of sealing testing. The sealing ring 7 can improve the sealing between the sealing cover 8 and the workbench 6.

[0035] In this embodiment, the top frame 2 is provided with a lifting assembly for moving the sealing cover 8 up and down. The lifting assembly includes an electric push rod 20 installed on the top frame 2. A fixing plate 22 is embedded on the upper surface of the sealing cover 8. The telescopic end of the electric push rod 20 is detachably installed on the fixing plate 22.

[0036] The sealing cover 8 on the fixed plate 22 is raised and lowered by the telescopic end of the electric push rod 20.

[0037] In this embodiment, the telescopic end of the electric push rod 20 is fixedly connected to a lifting plate 21, and a bolt rod 23 is fixedly connected to the fixed plate 22. The top end of the bolt rod 23 passes through the lifting plate 21 and is threaded with a nut 24.

[0038] The lifting plate 21 and the fixed plate 22 are connected by bolt rod 23 and nut 24, which facilitates the replacement of the sealing cover 8 on the fixed plate 22.

[0039] The sealing cover 8 is fixedly connected to the air extraction pipe 9, and the air extraction pipe 9 is connected to the air extraction pump.

[0040] If leakage occurs during air tightness testing, the leaked gas can be extracted from the sealed cover 8 through the air pump and air extraction pipe 9 and pumped into the treatment tank.

[0041] It should be noted that the motor 13 in this embodiment is a forward and reverse motor, and the electric push rod 20 is an electric push rod with a stroke of 100 cm. The motor 13 and the electric push rod 20 are technical means known to those skilled in the art. A suitable controller can be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components work sequentially to complete the electrical connection. The detailed connection methods are technologies known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control.

[0042] Working principle: First, start the motor 13. The output shaft of the motor 13 drives the screw 14 to rotate. Since the screw 14 is threadedly connected to the slider 15 and the slider 15 is restricted to moving laterally within the slide groove 12, the rotation of the screw 14 will drive the slider 15 to move within the slide groove 12. The movement of the slider 15 will then drive the moving seat 4 to slide laterally within the moving groove 3. When the moving seat 4 moves to the appropriate position, turn off the motor 13. At this time, the worker can easily place the gas cylinder 5 on the moving seat 4 or remove the gas cylinder 5 from the moving seat 4 for replacement.

[0043] When placing the gas tank 5, place the gas tank 5 on the movable seat 4 and make the bottom of the gas tank 5 contact the upper surface of the movable seat 4. Then, slide the limiting plate 17 onto the gas tank 5 through the adapter groove 18, and make the two ends of the limiting plate 17 slide onto the two guide rods 16 respectively until the limiting plate 17 contacts the limiting ring 19. At this time, the limiting plate 17 effectively limits the gas tank 5 to prevent the gas tank 5 from shaking or shifting during movement or testing.

[0044] When it is necessary to test the airtightness, the electric push rod 20 is activated. The telescopic end of the electric push rod 20 drives the lifting plate 21 to move downward. The descent of the lifting plate 21 in turn drives the fixed plate 22 and the sealing cover 8 to move downward until the bottom end of the sealing cover 8 is in close contact with the sealing ring 7 on the worktable 6. At this time, the valve body, the testing fixture and the testing instrument are all located inside the sealing cover 8, forming a sealed testing space.

[0045] If a gas leak is detected during the process, the air pump can be started to extract the leaked gas from the sealed cover 8 through the air extraction pipe 9 and pump it to the treatment tank for treatment to prevent the leaked gas from polluting the environment.

[0046] After the test is completed, the electric push rod 20 is started again, so that the telescopic end of the electric push rod 20 drives the lifting plate 21, the fixed plate 22 and the sealing cover 8 to move upward until the sealing cover 8 is completely removed from the worktable 6. At this time, the valve body that has been tested can be removed from the worktable 6 and a new valve body to be tested can be placed for the next round of testing.

[0047] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A frame structure for an airtightness testing device, comprising a base frame (1) and an air tank (5), characterized in that, The base frame (1) has a moving groove (3) on its inner bottom wall. A moving seat (4) is slidably connected in the moving groove (3). A fixing component for fixing the gas tank (5) is provided on the moving seat (4). A moving component for moving the moving seat (4) is provided on the base frame (1). The gas tank (5) is pulled out from the base frame (1) by moving the moving seat (4). A top frame (2) and a worktable (6) are fixedly connected on the base frame (1). A sealing cover (8) is provided in the top frame (2). A lifting component for lifting and lowering the sealing cover (8) is provided on the top frame (2).

2. The frame structure of the airtightness testing device according to claim 1, characterized in that, The fixing assembly includes two guide rods (16) fixedly connected to the movable seat (4) and a limiting plate (17) disposed above the movable seat (4). The two ends of the limiting plate (17) are slidably connected to the two guide rods (16), and the limiting plate (17) is provided with an adapter groove (18), and the limiting plate (17) is slidably connected to the gas tank (5) through the adapter groove (18).

3. The frame structure of the airtightness testing device according to claim 2, characterized in that, Limiting rings (19) are fixedly connected to both guide rods (16).

4. The frame structure of the airtightness testing device according to claim 1, characterized in that, The moving component includes a motor (13) mounted on a base frame (1), a sliding groove (12) is provided on the inner bottom wall of the moving groove (3), a screw (14) is mounted on the output shaft of the motor (13), and the screw (14) is rotatably connected in the sliding groove (12), a slider (15) is threaded on the screw (14), and the top end of the slider (15) is fixedly connected to the moving base (4).

5. The frame structure of the airtightness testing device according to claim 1, characterized in that, Two guide blocks (10) are fixedly connected to the base frame (1). Guide grooves (11) are opened on the side of the two guide blocks (10) that are close to each other, and the two ends of the moving seat (4) are slidably connected in the two guide grooves (11).

6. The frame structure of the airtightness testing device according to claim 1, characterized in that, A sealing ring (7) is fixedly connected to the upper surface of the workbench (6), and the sealing ring (7) matches the bottom end of the sealing cover (8).

7. The frame structure of the airtightness testing device according to claim 1, characterized in that, The lifting assembly includes an electric push rod (20) mounted on the top frame (2), and a fixing plate (22) is embedded on the upper surface of the sealing cover (8). The telescopic end of the electric push rod (20) is detachably mounted on the fixing plate (22).

8. The frame structure of the airtightness testing device according to claim 7, characterized in that, The telescopic end of the electric push rod (20) is fixedly connected to a lifting plate (21), and a bolt rod (23) is fixedly connected to the fixed plate (22). The top end of the bolt rod (23) passes through the lifting plate (21) and is threaded with a nut (24).

9. The frame structure of the airtightness testing device according to claim 1, characterized in that, The sealing cover (8) is fixedly connected to the air extraction pipe (9), and the air extraction pipe (9) is connected to the air extraction pump.

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