Valve body pressure testing device

Abstract

The invention provides a valve body pressure testing device which comprises a base used for placing a valve body, a pressing plate used for pressing the valve body on the base and a first moving mechanism used for driving the pressing plate to move, the pressing plate can be driven by the first moving mechanism to move in the Y direction, a first sealing structure is arranged on the base or the pressing plate, and a second sealing structure is arranged on the base or the pressing plate. A left sealing plate and a second moving mechanism are arranged on the left side of the base, the left sealing plate can be driven by the second moving mechanism to move in the X direction, a right sealing plate and a third moving mechanism are arranged on the right side of the base, and the right sealing plate can be driven by the third moving mechanism to move in the X direction. A pressure water conveying pipe used for conveying water into the valve body is arranged on the left sealing plate or the right sealing plate or the pressing plate. And the pressure bearing capacity of the valve body and whether water leakage exists or not are detected. The problems of repeated assembly and repeated pressure test of the valve are avoided, the production efficiency of enterprises is improved, funds are saved for the enterprises, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to the field of valve testing, in particular to a valve body pressure testing device. Background Art

[0002] At present, the valve pressure testers on the market, whether strength test or sealing test, are for the whole valve. There is no device for strength test of the valve body alone. This creates a problem: the valve has been assembled, but during the pressure test, it is found that the valve body or valve cover and other parts are leaking. At this time, the assembled valve must be disassembled to repair or replace the leaking valve body, valve cover and other parts. After the repair or replacement is completed, the valve must be reassembled and the pressure test must be re-tested. This is time-consuming and labor-intensive, and seriously affects efficiency. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a valve body pressure testing device, characterized in that it comprises a base for placing the valve body, a pressing plate for pressing the valve body on the base and a first moving mechanism for driving the pressing plate to move, the pressing plate being arranged to be movable in the Y direction under the drive of the first moving mechanism, a first sealing structure being arranged on the base or the pressing plate, a left sealing plate and a second moving mechanism being arranged on the left side of the base, the left sealing plate being arranged to be movable in the X direction under the drive of the second moving mechanism, a right sealing plate and a third moving mechanism being arranged on the right side of the base, the right sealing plate being arranged to be movable in the X direction under the drive of the third moving mechanism, and a pressure water supply pipe for supplying water to the valve body being arranged on the left sealing plate, the right sealing plate or the pressing plate. Preferably, it also includes a bracket, the first moving mechanism includes a power source, a screw and a transmission nut, the transmission nut is installed on the bracket, the screw is engaged with the transmission nut, the power source is installed at one end of the screw to drive the screw to rotate, and the pressure plate is connected to the other end of the screw.

[0004] Preferably, a positioning groove is provided on the side wall of one end of the lead screw connected to the pressure plate, a connecting groove for the lead screw to extend into is provided on the pressure plate, a pin hole is provided on the side wall of the connecting groove, a pin is provided in the pin hole, after the lead screw extends into the connecting groove, the pin passes through the pin hole and is stuck in the positioning groove, thereby locking the pressure plate and the lead screw in a limited position.

[0005] Preferably, it also includes a flip seat, the bracket is in a "mouth" shape, the base, the first moving mechanism, the second moving mechanism and the third moving mechanism are respectively installed on the four sides of the bracket, the bracket can be flipped on the flip seat, and the flip seat is provided with a flip mechanism for flipping the bracket.

[0006] Preferably, the flip seat includes a bottom plate and two columns, a mounting hole is opened on the side wall of the top of the column, and circular connecting blocks are protruding from the left and right sides of the bracket, and the two connecting blocks are respectively installed in the two mounting holes through bearings.

[0007] Preferably, the flipping mechanism comprises a worm wheel and a worm, the worm is rotatably mounted on the column, the worm wheel is fixedly connected to the connecting block and meshes with the worm, and a connecting head is provided at one end of the worm.

[0008] Preferably, the pin hole is a threaded hole, and the pin is a set screw.

[0009] Preferably, an auxiliary frame is provided on the bracket, and an auxiliary hole for the lead screw to pass through is provided on the auxiliary frame.

[0010] Preferably, the structures of the second moving mechanism and the third moving mechanism are the same as that of the first moving mechanism.

[0011] The beneficial effects of the present invention are as follows: the pressure bearing capacity of the valve body and whether there is water leakage can be detected, the problem of repeated assembly and repeated pressure testing of valves can be avoided, the production efficiency of the enterprise can be improved, funds can be saved and costs can be reduced for the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a structural diagram of a first embodiment of the present invention; Figure 2 for Figure 1 A partial enlarged view of the marked area; Figure 3 FIG. 4 is a structural diagram of a second embodiment of the present invention. DETAILED DESCRIPTION

[0013] The present invention will be further described below in detail with reference to the embodiments shown in the accompanying drawings.

[0014] See also Figure 1-Figure 2 The first embodiment of the present invention comprises a base 1 for placing a valve body, a pressing plate 21 for pressing the valve body on the base 1, and a first moving mechanism for driving the pressing plate 21 to move, wherein the pressing plate 21 is configured to be movable in the Y direction under the drive of the first moving mechanism, a first sealing structure is provided on the base 1 or the pressing plate 21, a left sealing plate 31 and a second moving mechanism are provided on the left side of the base 1, wherein the left sealing plate 31 is configured to be movable in the X direction under the drive of the second moving mechanism, a right sealing plate 41 and a third moving mechanism are provided on the right side of the base 1, wherein the right sealing plate 41 is configured to be movable in the X direction under the drive of the third moving mechanism, and a pressure water supply pipe 5 for supplying water to the valve body is provided on the left sealing plate 31, the right sealing plate 41 or the pressing plate 21.

[0015] Furthermore, it also includes a bracket 6, the first moving mechanism includes a power source 22, a lead screw 23 and a transmission nut 24, the transmission nut 24 is installed on the bracket 6, the lead screw 23 is meshed with the transmission nut 24, the power source 22 is installed at one end of the lead screw 23 to drive the lead screw 23 to rotate, and the pressure plate 21 is connected to the other end of the lead screw 23. The structures of the second moving mechanism and the third moving mechanism are the same as those of the first moving mechanism.

[0016] When testing the pressure of the valve body, first place the valve body on the base 1, and then the first moving mechanism, the second moving mechanism, and the third moving mechanism approach the valve body from three directions respectively, lock the valve body and seal the opening on the valve body. Then, water is supplied to the valve body through the pressure water pipe 5. When the pressure reaches the test pressure, it is maintained for a period of time to observe whether there is any water leakage in the valve body, and to detect the pressure bearing capacity of the valve body and whether there is any water leakage. This avoids the problem of repeated assembly and repeated pressure testing of valves, improves the production efficiency of enterprises, saves money for enterprises, and reduces costs.

[0017] In this embodiment, the first moving mechanism, the second moving mechanism and the third moving mechanism have the same structure, including a handwheel, a screw 23 and a transmission nut 24. The handwheel is operated by a person to provide power to drive the screw 23 to move forward and backward, thereby driving the pressure plate 21, the left sealing plate 31 and the right sealing plate 41. The first moving mechanism, the second moving mechanism and the third moving mechanism can also be driven by a motor, or by air pressure or a hydraulic mechanism.

[0018] Furthermore, a positioning groove 25 is provided on the side wall of one end of the lead screw 23 connected to the pressure plate 21, and a connecting groove for the lead screw to extend into is provided on the pressure plate 21. A pin hole is provided on the side wall of the connecting groove, and a pin 26 is provided in the pin hole. After the lead screw 23 extends into the connecting groove, the pin 26 passes through the pin hole and is stuck in the positioning groove 25, thereby locking the pressure plate 21 and the lead screw 23 in a limited position.

[0019] The pressing plate 21 is connected to the lead screw 23 by the cooperation of the pin 26 and the positioning groove 25 , which has a simple structure and is easy to manufacture.

[0020] Furthermore, the pin hole is a threaded hole, and the pin 26 is a set screw. When the pressure plate 21 needs to be replaced, the set screw is more convenient to disassemble and assemble.

[0021] See also Figure 3 As shown, the second embodiment of the present invention, based on the first embodiment, further includes a flip seat 7, the bracket 6 is in a "mouth" shape, the base 1, the first moving mechanism, the second moving mechanism and the third moving mechanism are respectively installed on the four sides of the bracket 6, the bracket 6 can be flipped on the flip seat 7, and the flip seat 7 is provided with a flip mechanism for flipping the bracket 6.

[0022] Furthermore, the flip seat 7 includes a bottom plate 71 and two columns 72, and a mounting hole is opened on the side wall of the top of the column 72. The left and right sides of the bracket 6 are protruding with circular connecting blocks 73, and the two connecting blocks 73 are respectively installed in the two mounting holes through bearings.

[0023] The mechanism is installed on the flip seat 7 in a flip manner. During the pressure test, the valve body can be kept at different angles to simulate different installation positions of the valve body, thereby making the test result more accurate.

[0024] Furthermore, the flipping mechanism includes a worm wheel 74 and a worm 75 . The worm 75 is rotatably mounted on the column 72 . The worm wheel 74 is fixedly connected to the connecting block 73 and meshes with the worm 75 . A connecting head 76 is provided at one end of the worm 75 .

[0025] The connector 76 can be connected to a hand wheel, a motor or other driving mechanism, so as to drive the worm 75 to rotate, and drive the worm wheel 74 and the bracket 6 to rotate.

[0026] Furthermore, an auxiliary frame 61 is provided on the bracket 6 , and an auxiliary hole for the lead screw 23 to pass through is provided on the auxiliary frame 61 .

[0027] The auxiliary frame 61 provides more fulcrums for the lead screw 23, making the installation structure of the lead screw 23 more stable.

[0028] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A valve body pressure testing device, characterized in that: The invention comprises a base (1) for placing a valve body, a pressing plate (21) for pressing the valve body onto the base (1), and a first moving mechanism for driving the pressing plate (21) to move, wherein the pressing plate (21) is arranged to be movable in the Y direction under the drive of the first moving mechanism, a first sealing structure is arranged on the base (1) or the pressing plate (21), a left sealing plate (31) and a second moving mechanism are arranged on the left side of the base (1), the left sealing plate (31) is arranged to be movable in the X direction under the drive of the second moving mechanism, a right sealing plate (41) and a third moving mechanism are arranged on the right side of the base (1), the right sealing plate (41) is arranged to be movable in the X direction under the drive of the third moving mechanism, and a pressure water supply pipe (5) for supplying water to the valve body is arranged on the left sealing plate (31), the right sealing plate (41) or the pressing plate (21).

2. A valve body pressure testing device according to claim 1, characterized in that: It also includes a bracket (6), the first moving mechanism includes a power source (22), a lead screw (23) and a transmission nut (24), the transmission nut (24) is mounted on the bracket (6), the lead screw (23) is meshed with the transmission nut (24), the power source (22) is mounted on one end of the lead screw (23) to drive the lead screw (23) to rotate, and the pressure plate (21) is connected to the other end of the lead screw (23).

3. A valve body pressure testing device according to claim 2, characterized in that: A positioning groove (25) is provided on the side wall of one end of the lead screw (23) connected to the pressure plate (21); a connecting groove for the lead screw (23) to extend into is provided on the pressure plate (21); a pin hole is provided on the side wall of the connecting groove; a pin (26) is provided in the pin hole; after the lead screw (23) extends into the connecting groove, the pin (26) passes through the pin hole and is clamped in the positioning groove (25), thereby limiting and locking the pressure plate (21) and the lead screw (23).

4. A valve body pressure testing device according to claim 3, characterized in that: The pin hole is a threaded hole, and the pin (26) is a set screw.

5. A valve body pressure testing device according to claim 2, characterized in that: It also includes a flip seat (7), the bracket (6) is in the shape of a "mouth", the base (1), the first moving mechanism, the second moving mechanism and the third moving mechanism are respectively mounted on four sides of the bracket (6), the bracket (6) is flippably mounted on the flip seat (7), and the flip seat (7) is provided with a flip mechanism for flipping the bracket (6).

6. A valve body pressure testing device according to claim 5, characterized in that: The flip seat (7) comprises a bottom plate (71) and two upright posts (72), a mounting hole being provided on the side wall at the top of the upright post (72), and circular connecting blocks (73) being protrudingly provided on the left and right sides of the bracket (6), and the two connecting blocks (73) are respectively mounted in the two mounting holes via bearings.

7. A valve body pressure testing device according to claim 6, characterized in that: The turning mechanism comprises a worm wheel (74) and a worm (75); the worm (75) is rotatably mounted on the column (72); the worm wheel (74) is fixedly connected to the connecting block (73) and meshes with the worm (75); and a connecting head (76) is provided at one end of the worm (75).

8. A valve body pressure testing device according to claim 2, characterized in that: An auxiliary frame (61) is provided on the bracket (6), and an auxiliary hole for the lead screw (23) to pass through is provided on the auxiliary frame (61).

9. A valve body pressure testing device according to claim 2, characterized in that: The structures of the second moving mechanism and the third moving mechanism are the same as that of the first moving mechanism.

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