Valve pressure regulating and limiting device

Abstract

The utility model relates to the technical field of limiting devices, in particular to a valve pressure regulating limiting device which comprises a valve body, a valve cover, a control valve, a connecting disc, a valve rod and a driving device. A valve cover is installed at the side end of the valve body, a control valve is installed in the center of the outer surface of the valve cover, a connecting disc used for matched limiting is installed in the control valve, a valve rod used for rotating to control opening and closing of a valve sealing piece is installed in the center of the connecting disc in a penetrating mode, and a driving device used for controlling opening and closing is installed at the side end of the valve rod. According to the utility model, when the control valve is closed, the connecting disc is in limiting contact, so that the valve rod cannot rotate to prevent the ball body from being closed, and when the control valve is opened, limiting contact can be carried out, so that the control valve is limited to prevent sealing leakage caused by inaccurate switch position of the ball body even if the electric valve is not installed for rapid pressure test; by using the connecting disc, the pressure of the control valve can be tested before the electric fitting is installed, and the electric fitting is convenient to debug the limiting position.

Description

TECHNICAL FIELD

[0001] The utility model relates to a limiting device technical field especially relates to a valve pressure regulating limiting device. BACKGROUND

[0002] The main function of the connecting disc in the valve is to connect the valve and the pipeline, to ensure the safety and stability of the fluid in the pipeline system, and to provide reliable sealing by the cooperation of the bolt and the gasket to prevent fluid leakage.

[0003] The ordinary connecting disc has single function and can only be used as an intermediate device for connecting the valve and the electric equipment, and the connecting disc with other functions has a relatively complex structure and high cost, and the electric equipment valve on the market needs to be installed and debugged to test the pressure, and if the test pressure is unqualified, it is troublesome to disassemble, and if the electric equipment is not installed for pressure test, the sealing is easy to leak due to inaccurate switch position.

[0004] Therefore, in view of the problems that the traditional connecting disc has single function and can only be used as an intermediate device for connecting the valve and the electric equipment, the connecting disc with other functions has a relatively complex structure and high cost, and the electric equipment valve needs to be installed and debugged to test the pressure, a valve pressure regulating limiting device can be designed, which can test the pressure of the valve without installing the electric equipment first, and also facilitates the debugging of the limiting position of the electric equipment. SUMMARY

[0005] In order to overcome the problems that the traditional connecting disc has single function and can only be used as an intermediate device for connecting the valve and the electric equipment, the connecting disc with other functions has a relatively complex structure and high cost, and the electric equipment valve needs to be installed and debugged to test the pressure.

[0006] The technical scheme of the utility model is as follows: a valve pressure regulating limiting device, comprising a valve body, a valve cover, a control valve, a connecting disc, a valve rod and a driving device, the valve body is provided with the valve cover at the side end, the valve cover is provided with the control valve at the center of the outer surface, the control valve is provided with the connecting disc for limiting contact in the inside, the valve rod for rotating movement to control the opening and closing of the valve sealing element is installed through the center of the connecting disc, and the valve rod is provided with the driving device for controlling the opening and closing at the side end.

[0007] Preferably, when the control valve is closed, the connecting disc is limited to contact so that the valve rod cannot rotate to prevent the ball from being closed, and when the control valve is opened, the connecting disc can also be limited to contact, so that even if the electric equipment is not installed for rapid pressure test, the control valve has a limiting position to prevent the ball from being opened and sealed due to inaccurate position, and the connecting disc can be used to test the pressure of the control valve without installing the electric equipment first, and also facilitates the debugging of the limiting position of the electric equipment.

[0008] Preferably, the connecting disc is connected with the control valve, and the control valve is provided with a stuffing box in the inside.

[0009] As preferred, the valve stem passes through the valve body, the stuffing box, the connecting disc and the electric device.

[0010] As preferred, a key slot is arranged inside the control valve, and a key is arranged inside the key slot.

[0011] As preferred, a first limiting groove and a second limiting groove are arranged inside the connecting disc, and the first limiting groove and the second limiting groove are matched with the key.

[0012] As preferred, a fixed outer disc is arranged inside the control valve and matched with the connecting disc.

[0013] As preferred, the connecting disc is coincided with the central axis of the valve stem.

[0014] The valve pressure limiting device has the advantages that when the control valve is closed, the valve stem cannot be rotated to prevent the ball from being switched, and when the control valve is opened, the valve stem can also be limited to prevent the ball from being switched and causing sealing leakage, the connecting disc can be used to test the pressure of the control valve without installing the electric device, and the electric device is convenient to test the pressure and limit the position. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The valve pressure limiting device is shown as a three-dimensional structure schematic view.

[0016] Figure 2 The valve stem in the valve pressure limiting device is shown as a three-dimensional structure schematic view.

[0017] Figure 3 The fixed outer disc in the valve pressure limiting device is shown as a three-dimensional structure schematic view.

[0018] Figure 4 The key in the valve pressure limiting device is shown as a three-dimensional structure schematic view.

[0019] Figure 5 The valve body in the valve pressure limiting device is shown as a sectional view.

[0020] Explanation of reference signs: 1, valve body; 2, valve cover; 3, control valve; 4, connecting disc; 5, valve rod; 6, driving device; 7, stuffing box; 8, key groove; 9, flat key; 10, first limiting groove; 11, second limiting groove; 12, fixed outer disc. DETAILED DESCRIPTION

[0021] The utility model is further explained below in combination with the drawings and examples.

[0022] Please refer to Figures 1-5 The utility model provides a kind of example: a valve pressure regulating limiting device, including valve body 1, valve cover 2, control valve 3, connecting disc 4, valve rod 5, driving device 6;Valve body 1 side end is equipped with valve cover 2, the outer surface center of valve cover 2 is equipped with control valve 3, control valve 3 is equipped with connecting disc 4 for cooperation limiting in place, the center of connecting disc 4 is equipped with valve rod 5 for rotating movement to control valve 3 sealing piece opening and closing, valve rod 5 side end is equipped with driving device 6 for controlling opening and closing, when control valve 3 is closed, connecting disc 4 is limited contact to make valve rod 5 can not rotate again to prevent ball switch, when control valve 3 is opened, it can also be limited contact, so even if again not install electric want to quickly pressure test, control valve 3 also has limiting position to prevent ball switch position inaccuracy to cause sealing leakage, using the connecting disc 4 can be not installed electric test first to control valve 3 pressure test, also facilitate electric debugging limiting position, connecting disc 4 is connected with control valve 3, control valve 3 is equipped with stuffing box 7 in place, valve rod 5 passes through valve body 1, stuffing box 7, connecting disc 4 and electric cooperation, control valve 3 is equipped with key groove 8 in place, flat key 9 is equipped in key groove 8, first limiting groove 10 and second limiting groove 11 are opened in connecting disc 4, and first limiting groove 10 and second limiting groove 11 are adapted with flat key 9, control valve 3 is equipped with fixed outer disc 12 with connecting disc 4 and each other assembly use in place, the center axis of connecting disc 4 and valve rod 5 coincides.

[0023] When working, when control valve 3 is closed, flat key 9 in key groove 8 is contacted with first limiting groove 10 on connecting disc 4 to make valve rod 5 can not rotate again to prevent ball switch, when control valve 3 is opened, it is contacted with second limiting groove 11, so even if again not install electric want to quickly pressure test, control valve 3 also has limiting position to prevent ball switch position inaccuracy to cause sealing leakage.

[0024] Through the above steps, the control valve 3 is closed, and the ball cannot be switched over by the limiting contact of the connecting disc 4, and when the control valve 3 is opened, the limiting contact can also be performed, so that even if the electric motor is not installed for rapid pressure test, the control valve 3 has a limiting position to prevent the ball from being switched over to cause sealing leakage due to inaccurate switch position, and the connecting disc 4 can be used to test the control valve 3 without installing the electric motor, and the limiting position is convenient for electric motor debugging, so as to solve the problems that the traditional connecting disc 4 has single function and can only be used as an intermediate device for connecting the valve and the electric motor, the connecting disc 4 with other functions has a relatively complex structure and high cost, and the electric motor valve needs to be installed with the electric motor and the switch position needs to be debugged before pressure test.

[0025] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the person skilled in the art without departing from the purpose of the utility model.

Claims

1. A valve pressure regulating limiting device comprising a valve body (1); characterized in that: It also includes the valve cover (2), control valve (3), connecting disc (4), valve stem (5), drive device (6); valve body (1) side end is installed valve cover (2), valve cover (2) outer surface center is installed control valve (3), control valve (3) is installed inside the connecting disc (4) for cooperation limiting, connecting disc (4) center is installed for rotating movement so as to control valve (3) seal opening and closing valve stem (5), valve stem (5) side end is installed for control opening and closing drive device (6).

2. The valve pressure regulating stopper device according to claim 1, wherein: Connecting disc (4) is connected with control valve (3), control valve (3) is internally provided with stuffing box (7).

3. The valve pressure regulating stopper device according to claim 2, wherein: Valve stem (5) passes through valve body (1), stuffing box (7), connecting disc (4) and electrical equipment.

4. The valve pressure regulating stop device of claim 1, wherein: The control valve (3) is internally provided with a keyway (8), and the keyway (8) is internally provided with a flat key (9).

5. The valve pressure regulating stopper device according to claim 4, wherein: The connecting disc (4) is internally provided with a first limiting groove (10) and a second limiting groove (11), and the first limiting groove (10) and the second limiting groove (11) are matched with the flat key (9).

6. The valve pressure regulating stop device of claim 1, wherein: The control valve (3) is internally provided with a fixed outer disc (12) which is assembled with the connecting disc (4).

7. The valve pressure regulating stop device of claim 1, wherein: The connecting disc (4) coincides with the central axis of the valve stem (5).

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