Sealing performance detection device for valve electric device

Abstract

The utility model discloses a sealing performance detection device for a valve electric device, and relates to the technical field of valve electric devices, the sealing performance detection device comprises a rack and a sealing cylinder, a lifting assembly is arranged below the left side of the rack, the output end of a servo motor is connected with a bidirectional screw rod I, the external part of a belt pulley I is connected with a belt, and the belt pulley I is connected with a screw rod II. A second bidirectional lead screw is arranged in the middle of the second belt wheel in a penetrating mode, and a fixing block is arranged on the top of the lead screw nut. According to the sealing performance detection device for the valve electric device, when a water inlet and a water outlet of a valve abut against a first hollow block and a second hollow block respectively, a sealing cylinder, the second hollow block, the valve, the first hollow block and an air injection hose are communicated, at the moment, an air compressor is started, and air in the air compressor enters the valve through the air injection hose and the first hollow block; as the valve is connected with the valve electric device through the connecting disc, whether the valve electric device leaks or not can be judged according to the change of the value pointed by the pressure gauge.

Description

Technical Field

[0001] The utility model relates to the technical field of valve electric devices, in particular to a sealing performance detection device for valve electric devices. Background Technique

[0002] Valve electric devices are indispensable driving equipment for realizing program control, automatic control and remote control of valves. Therefore, valve electric devices are widely used. A valve electric device generally consists of a motor, a stroke control mechanism, a torque limiting mechanism, a manual and electric switching mechanism, and an opening indicator. Generally, it has a fully sealed structure inside, and a valve electric device is generally connected to a valve through a connecting plate. After the valve electric device is connected to the valve, it is often necessary to detect its sealing performance to determine whether it is qualified.

[0003] At present, the liquid leak detection method is mostly used, but in the actual detection process, this method is likely to wet some defective products, causing the motor inside the valve electric device to short-circuit or even be completely damaged.

[0004] Therefore, in view of this, in view of the existing structure and deficiencies, research and improvement are carried out to propose a sealing performance detection device for valve electric devices. Content of the Utility Model

[0005] The purpose of the utility model is to provide a sealing performance detection device for valve electric devices to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A sealing performance detection device for valve electric devices, including a frame and a sealing cylinder. A lifting assembly is installed below the left side of the frame, and the lifting assembly includes a servo motor, a bidirectional screw rod one, a pulley one, a belt, a pulley two, a bidirectional screw rod two, a screw nut, a fixed block, a swing arm, a lifting seat, an air injection hose, an air compressor and a hollow block one. The output end of the servo motor is connected to the bidirectional screw rod one, and a pulley one is arranged outside the bidirectional screw rod one. The outside of the pulley one is connected to the belt, and a pulley two is also arranged inside the belt. The bidirectional screw rod two passes through the middle of the pulley two, and screw nuts are connected to the outside of both the bidirectional screw rod one and the bidirectional screw rod two. A fixed block is arranged at the top of the screw nut, and a swing arm is connected to the fixed block through a rotating shaft. The other end of the swing arm is connected to the lifting seat through a rotating shaft, and the air injection hose passes through the middle of the lifting seat. The bottom end of the air injection hose is connected to the air compressor, and the top end of the air injection hose is connected to the hollow block one. The sealing cylinder passes through the middle of the top of the frame, and a hollow block two is arranged at the bottom of the sealing cylinder. A pressure gauge is installed on the sealing cylinder.

[0007] Further, sliding grooves are formed on both inner sides of the frame, and support columns are fixed to both sides of the bottom of the frame.

[0008] Further, there are four support columns, and the frame and the support columns are of an integrated structure.

[0009] Further, one end of the first bidirectional lead screw away from the servo motor is rotatably connected to the frame, and both ends of the second bidirectional lead screw are rotatably connected to the frame.

[0010] Further, the first bidirectional lead screw and the second bidirectional lead screw have the same helix direction and are parallel to each other.

[0011] Further, the lifting seat is arranged in the sliding groove, and the lifting seat is fixedly connected to the first hollow block.

[0012] Further, the cross-sections of the first hollow block and the second hollow block are both of an isosceles trapezoid structure, and the sealing cylinder communicates with the second hollow block.

[0013] The utility model provides a device for detecting the sealing performance of a valve electric device, which has the following beneficial effects:

[0014] 1. Since the first hollow block and the second hollow block are hollow conical structures in the utility model, when the lifting seat vertically rises under the support of the swing arm until the water inlet and the water outlet of the valve respectively abut against the first hollow block and the second hollow block, the fitting degree between the connection of the water inlet of the valve and the first hollow block and the connection of the water outlet of the valve and the second hollow block can be ensured, and gas leakage from the connection is avoided, so as not to affect the detection of the sealing performance of the valve electric device.

[0015] 2. When the water inlet and the water outlet of the valve in the utility model respectively abut against the first hollow block and the second hollow block, the sealing cylinder, the second hollow block, the valve, the first hollow block and the air injection hose form a communication. At this time, the air compressor is started, and the gas in the air compressor enters the valve through the air injection hose and the first hollow block. Since the valve is connected to the valve electric device through the connection plate, the leakage condition of the valve electric device can be judged according to the change of the value indicated by the pressure gauge. Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of a device for detecting the sealing performance of a valve electric device according to the utility model;

[0017] Figure 2 is the top view structural schematic diagram of the first bidirectional lead screw and the second bidirectional lead screw of a device for detecting the sealing performance of a valve electric device according to the utility model;

[0018] Figure 3 is the three-dimensional structural schematic diagram of the lifting seat of a device for detecting the sealing performance of a valve electric device according to the utility model.

[0019] In the figure: 1, frame; 2, chute; 3, support column; 4, lifting assembly; 401, servo motor; 402, first bidirectional lead screw; 403, first pulley; 404, belt; 405, second pulley; 406, second bidirectional lead screw; 407, lead screw nut; 408, fixing block; 409, swing arm; 410, lifting seat; 411, air injection hose; 412, air compressor; 413, first hollow block; 5, sealing cylinder; 6, second hollow block; 7, pressure gauge. Specific embodiments

[0020] The following further describes in detail the embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0021] As Figures 1 to 3 shown, a sealing performance detection device for a valve electric device includes a frame 1 and a sealing cylinder 5. A lifting assembly 4 is installed below the left side of the frame 1, and the lifting assembly 4 includes a servo motor 401, a first bidirectional lead screw 402, a first pulley 403, a belt 404, a second pulley 405, a second bidirectional lead screw 406, a lead screw nut 407, a fixing block 408, a swing arm 409, a lifting seat 410, an air injection hose 411, an air compressor 412, and a first hollow block 413. The output end of the servo motor 401 is connected to the first bidirectional lead screw 402, and a first pulley 403 is arranged outside the first bidirectional lead screw 402. The outside of the first pulley 403 is connected to the belt 404, and a second pulley 405 is further arranged inside the belt 404. The second bidirectional lead screw 406 passes through the middle of the second pulley 405. The outside of both the first bidirectional lead screw 402 and the second bidirectional lead screw 406 is connected to a lead screw nut 407. A fixing block 408 is arranged at the top of the lead screw nut 407, and a swing arm 409 is connected to the fixing block 408 through a rotating shaft. The other end of the swing arm 409 is connected to a lifting seat 410 through a rotating shaft. An air injection hose 411 penetrates through the middle of the lifting seat 410. The bottom end of the air injection hose 411 is connected to an air compressor 412, and the top end of the air injection hose 411 is connected to a first hollow block 413. The end of the first bidirectional lead screw 402 away from the servo motor 401 is rotatably connected to the frame 1, and both ends of the second bidirectional lead screw 406 are rotatably connected to the frame 1. The first bidirectional lead screw 402 and the second bidirectional lead screw 406 have the same helix direction and are parallel to each other. The lifting seat 410 is arranged in the chute 2, and the lifting seat 410 is fixedly connected to the first hollow block 413. The sealing cylinder 5 penetrates through the middle of the top of the frame 1, and a second hollow block 6 is arranged at the bottom of the sealing cylinder 5. A pressure gauge 7 is installed on the sealing cylinder 5.

[0022] The specific operation is as follows. Since the hollow block 1 (413) and the hollow block 2 (6) are hollow conical structures, when the lifting seat 410 vertically rises under the support of the swing arm 409 until the water inlet and the water outlet of the valve are respectively abutted against the hollow block 1 (413) and the hollow block 2 (6), the fitting degree between the connection of the water inlet of the valve and the hollow block 1 (413) and the connection of the water outlet of the valve and the hollow block 2 (6) can be ensured, and gas leakage from the connection is avoided, which affects the detection of the sealing performance of the valve electric device.

[0023] As Figure 1 shown, sliding grooves 2 are provided on both inner sides of the frame 1, and support columns 3 are fixed on both bottom sides of the frame 1. There are four support columns 3, and the frame 1 and the support columns 3 are of an integral structure. The cross-sections of the hollow block 1 (413) and the hollow block 2 (6) are both isosceles trapezoid structures, and the sealing cylinder 5 and the hollow block 2 (6) are in communication with each other.

[0024] The specific operation is as follows. When the water inlet and the water outlet of the valve are respectively abutted against the hollow block 1 (413) and the hollow block 2 (6), the sealing cylinder 5, the hollow block 2 (6), the valve, the hollow block 1 (413) and the air injection hose 411 form a communication. At this time, the air compressor 412 is started, so that the gas in the air compressor 412 enters the valve through the air injection hose 411 and the hollow block 1 (413). Since the valve is connected to the valve electric device through a connection disk, the leakage condition of the valve electric device can be judged according to the change of the value pointed by the pressure gauge 7.

[0025] In summary, for the sealing performance detection device of the valve electric device, during use, first, the air compressor 412 is installed between the lower part of the frame 1 and the four support columns 3. When the sealing performance of the valve electric device needs to be detected, the valve electric device is first connected to the valve through a connection disk, and then the water inlet and the water outlet of the valve are respectively placed corresponding to the hollow block 1 (413) and the hollow block 2 (6), and the servo motor 401 is controlled to drive the bidirectional lead screw 1 (402) and the belt pulley 1 (403) to rotate. By using the friction between the belt 404 and the belt pulley 1 (403) and the belt pulley 2 (405), the movement and power are transmitted to make the bidirectional lead screw 2 (406) rotate, so that the lead screw nut 407 drives the fixed block 408 to move horizontally towards each other outside the bidirectional lead screw 1 (402) and the bidirectional lead screw 2 (406) respectively, and the swing arm 409 rotates, so that the lifting seat 410 vertically rises under the support of the swing arm 409 until the water inlet and the water outlet of the valve are respectively abutted against the hollow block 1 (413) and the hollow block 2 (6);

[0026] Since the hollow block 1 (413) and the hollow block 2 (6) are hollow conical structures, the adaptability between the device and the valve is improved, the fitting degree between the connection of the water inlet of the valve and the hollow block 1 (413) and the connection of the water outlet of the valve and the hollow block 2 (6) is ensured, and gas leakage from the connection during air injection is avoided, which affects the detection of the sealing performance of the valve electric device;

[0027] After the sealing cylinder 5, the second hollow block 6, the valve, the first hollow block 413 and the air injection hose 411 are connected, start the air compressor 412, so that the gas in the air compressor 412 enters the valve through the air injection hose 411 and the first hollow block 413. Then, close the air compressor 412 and wait for a period of time. Then, judge the sealing performance of the valve electric device according to the change of the value pointed by the pressure gauge 7, and there will be no situation where the inside of the valve electric device is wetted by water during the detection process, ensuring the reliability of the device in use.

[0028] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles of the present invention and its practical applications, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

Claims

1. A valve electric device sealing performance detection device, comprising a frame (1) and a sealing cylinder (5), characterized in that: A lifting assembly (4) is installed at the lower left side of the frame (1), and the lifting assembly (4) comprises a servo motor (401), a bidirectional screw rod (402), a pulley (403), a belt (404), a pulley (405), a bidirectional screw rod (406), a screw nut (407), a fixing block (408), a swing arm (409), a lifting seat (410), an air injection hose (411), an air compressor (412) and a hollow block (413), wherein the output end of the servo motor (401) is connected to the bidirectional screw rod (402), and the outside of the bidirectional screw rod (402) is provided with a pulley (403), the outside of the pulley (403) is connected to the belt (404), and the inside of the belt (404) is also provided with a pulley (405), and the inside of the pulley (405) is provided with a pulley (406). A bidirectional screw rod 2 (406) is passed through the frame (1), and the outsides of the bidirectional screw rod 1 (402) and the bidirectional screw rod 2 (406) are both connected with screw rod nuts (407), a fixed block (408) is provided at the top of the screw rod nut (407), and a swing arm (409) is connected to the fixed block (408) via a rotating shaft, the other end of the swing arm (409) is connected to a lifting seat (410) via a rotating shaft, and an air injection hose (411) is passed through the middle of the lifting seat (410), the bottom end of the air injection hose (411) is connected to an air compressor (412), and the top end of the air injection hose (411) is connected to a hollow block 1 (413), the sealing cylinder (5) is passed through the middle end of the top of the frame (1), and a hollow block 2 (6) is provided at the bottom of the sealing cylinder (5), and a pressure gauge (7) is installed on the sealing cylinder (5).

2. A valve electric device sealing performance detection device according to claim 1, characterized in that: Slide grooves (2) are provided on both sides of the interior of the frame (1), and support columns (3) are fixed on both sides of the bottom of the frame (1).

3. A valve electric device sealing performance detection device according to claim 2, characterized in that: Four support columns (3) are provided, and the frame (1) and the support columns (3) are in an integrated structure.

4. A valve electric device sealing performance detection device according to claim 1, characterized in that: One end of the bidirectional screw rod 1 (402) away from the servo motor (401) is rotatably connected to the frame (1), and both ends of the bidirectional screw rod 2 (406) are rotatably connected to the frame (1).

5. A valve electric device sealing performance detection device according to claim 1, characterized in that: The two-way screw rod 1 (402) and the two-way screw rod 2 (406) have the same rotation direction, and the two-way screw rod 1 (402) and the two-way screw rod 2 (406) are parallel to each other.

6. A valve electric device sealing performance detection device according to claim 1, characterized in that: The lifting seat (410) is arranged in the slide groove (2), and the lifting seat (410) and the hollow block 1 (413) are fixedly connected.

7. A valve electric device sealing performance detection device according to claim 1, characterized in that: The cross-sections of the hollow block 1 (413) and the hollow block 2 (6) are both isosceles trapezoidal structures, and the sealing cylinder (5) and the hollow block 2 (6) are interconnected.

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