Device for replacing ball valve or waterproof pad under pressure

Abstract

The utility model relates to the field of under-pressure replacement of ball valves and waterproof pads on pipelines, and discloses a device for under-pressure replacement of a ball valve or a waterproof pad, comprising: a connector in threaded connection with the ball valve; the sliding rod is arranged in the connector in a penetrating manner and is connected with the connector in a sliding and sealing manner; the plugging head is fixed to the end, close to the ball valve, of the sliding rod, connected with the connector in a clamped mode and used for penetrating through the ball valve to be in threaded sealing connection with the base. According to the device, the connector is connected with the ball valve in a sealed mode, then the ball valve is opened, the plugging head is connected with the base in a sealed mode, then the ball valve or the waterproof pad is detached, a new ball valve or waterproof pad is installed, the plugging head is separated from the base, the ball valve is closed, and finally the connector is separated from the ball valve, so that the device is simple in structure and convenient to use; the ball valve or the waterproof pad can be replaced rapidly and efficiently, the sealing performance is good, under-pressure replacement of the ball valve and the waterproof pad is achieved, when the ball valve or the waterproof pad is replaced, water supply of a pipeline is not cut off, and normal use of a rear-end user is not affected.

Description

Technical Field

[0001] The present application relates to the field of pressurized replacement of ball valves and waterproof gaskets on pipelines, and in particular to a device for replacing ball valves or waterproof gaskets under pressure. Background Art

[0002] Reference Figure 1 In the process of transporting large-scale pipelines 100, a base 200 (also called a bottom pipe) is usually installed on the side wall of the pipeline 100, and then a ball valve 300 is threadedly installed on the base 200. In the process of installing the ball valve 300 on the base 200, in order to ensure the sealing between the ball valve 300 and the base 200, a waterproof gasket 400 is usually set between the ball valve 300 and the base 200. During the operation of the pipeline 100, as the use time of the ball valve 300 and the waterproof gasket 400 increases, the sealing performance of the ball valve 300 and the waterproof gasket 400 will gradually decrease. In order to ensure In order to ensure the sealing of the ball valve 300 and the waterproof gasket 400 and avoid leakage of the pipeline 100, the ball valve 300 or the waterproof gasket 400 often needs to be replaced. At present, when the ball valve 300 and the waterproof gasket 400 need to be replaced, it is usually necessary to stop the pipeline 100 from running, and then replace the ball valve 300 or the waterproof gasket 400. However, this will cause the pipeline 100 to stop running for a period of time, affecting the normal use of the back-end users of the pipeline 100. In order not to affect the normal use of the back-end users of the pipeline 100, the present application has developed a device for replacing the ball valve or the waterproof gasket under pressure. Summary of the Invention

[0003] In order to replace the ball valve or waterproof gasket under pressure, the present application provides a device for replacing the ball valve or waterproof gasket under pressure, which first uses a connecting head to seal the ball valve, then opens the ball valve, uses a sealing head to seal the base, then removes the ball valve or waterproof gasket, and installs a new ball valve or waterproof gasket, separates the sealing head from the base, closes the ball valve, and finally separates the connecting head from the ball valve. The device has a simple structure and is easy to use. It can replace the ball valve or waterproof gasket quickly, efficiently, and has good sealing performance. It realizes the replacement of the ball valve and waterproof gasket under pressure. When the ball valve or waterproof gasket needs to be replaced, the water supply to the pipeline will not be cut off, and the normal use of the back-end users will not be affected.

[0004] This application provides a device for replacing a ball valve or waterproof gasket under pressure, which adopts the following technical solution:

[0005] A device for replacing a ball valve or a waterproof gasket under pressure, comprising:

[0006] Connector, threaded onto the ball valve;

[0007] A sliding rod is inserted into the connector and is slidably and sealingly connected to the connector; and

[0008] The plugging head is fixed on one end of the sliding rod close to the ball valve and is clamped with the connecting head to pass through the ball valve and be sealed with the base thread.

[0009] Preferably, a connection sealing ring is provided on the connection head, and the connection sealing ring is located between the connection head and the ball valve.

[0010] Preferably, a sliding sealing ring is embedded in the interior of the connector, and the sliding rod is passed through the sliding sealing ring.

[0011] Preferably, the number of the sliding sealing rings is two.

[0012] Preferably, a sealing ring is provided on the sealing head, a limiting protrusion is formed on the inner wall of the base, and the sealing ring is located between the sealing head and the limiting protrusion.

[0013] Preferably, scale lines are provided on the axial surface of the slide rod.

[0014] Preferably, a rotary handle is threadedly connected to the slide rod, and the rotary handle is located at an end of the slide rod away from the ball valve.

[0015] Preferably, a locking nut is threadedly connected to the sliding rod, and the locking nut is located on a side of the rotating handle away from the ball valve, and the locking nut abuts against the rotating handle.

[0016] In summary, this application has the following beneficial technical effects:

[0017] 1. This application first uses the connecting head to seal the ball valve, then opens the ball valve, uses the sealing head to seal the base, then removes the ball valve or waterproof gasket, and installs a new ball valve or waterproof gasket, separates the sealing head from the base, closes the ball valve, and finally separates the connecting head from the ball valve. The device has a simple structure and is easy to use. The ball valve or waterproof gasket can be replaced quickly and efficiently, and has good sealing performance. It realizes the pressure replacement of the ball valve and waterproof gasket. When the ball valve or waterproof gasket needs to be replaced, the water supply to the pipeline will not be cut off, and the normal use of the back-end users will not be affected.

[0018] 2. This application improves the sealing between the connector and the ball valve, the sealing between the sliding rod and the connector, and the sealing between the sealing head and the base by providing a connecting sealing ring, a sliding sealing ring and a blocking sealing ring.

[0019] 3. This application provides scale lines on the slider to facilitate the user to know and grasp the distance the slider is extended.

[0020] 4. The present application provides a rotating handle and a locking nut on the slide rod, thereby facilitating the driving of the slide rod to rotate and improving the stability of the rotating handle during the rotation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the background technology figure of this application.

[0022] Figure 2 yes Figure 1 Schematic diagram of a partial cross-sectional structure of the device.

[0023] Figure 3 It is a schematic diagram of the overall structure of the device in the embodiment of the present application.

[0024] Figure 4 yes Figure 3 Schematic diagram of a partial cross-sectional structure of the device.

[0025] Figure 5 It is an exploded view of the device in the embodiment of the present application.

[0026] Explanation of the accompanying reference numerals: 100, pipe; 200, base; 201, limiting protrusion; 300, ball valve; 400, waterproof pad; 1, connecting head; 11, clamping plane; 12, slot; 2, sliding rod; 21, scale line; 3, sealing head; 4, connecting sealing ring; 5, sliding sealing ring; 6, sealing sealing ring; 7, rotating handle; 8, locking nut. DETAILED DESCRIPTION

[0027] The present application is further described in detail below with reference to the accompanying drawings.

[0028] An embodiment of the present application discloses a device for replacing a ball valve or a waterproof gasket under pressure.

[0029] Reference Figure 3 and Figure 4 The device is used for the pressure replacement of the ball valve 300 on the pipe 100 and the waterproof gasket 400 between the base 200 and the ball valve 300. A water outlet is opened on the pipe 100, and the base 200 is welded and fixed on the outer wall of the pipe 100, and the base 200 covers the water outlet on the pipe 100. The ball valve 300 is threadedly connected to the base 200. Specifically, the base 200 is provided with an external thread, and the ball valve 300 is provided with an internal thread. The waterproof gasket 400 is sleeved on the external thread of the base 200, and the internal thread of the ball valve 300 is threadedly connected to the external thread on the base 200, and the side end of the ball valve 300 presses the waterproof gasket 400 against the base 200.

[0030] Reference Figure 4 and Figure 5 The device for replacing the ball valve 300 or the waterproof gasket 400 under pressure includes a connecting head 1, a sliding rod 2 and a sealing head 3.

[0031] One end of connector 1 is open and has external threads on its outer wall. The other end of connector 1 is closed. The external threads on connector 1 are threadedly connected to the internal threads on ball valve 300. Connector 1 is cylindrical. To facilitate tightening connector 1, two parallel clamping surfaces 11 are formed on its outer wall. When tightening connector 1, a tool is clamped to these two clamping surfaces 11, and then the connector 1 is tightened.

[0032] In order to improve the sealing performance between the connector 1 and the ball valve 300 , a connecting sealing ring 4 is sleeved on the external thread of the connector 1 . During installation, the connector 1 is screwed so that the connecting ring 4 abuts against the ball valve 300 .

[0033] Reference Figure 4 and Figure 5 The sliding rod 2 is disposed inside the connector 1 and is slidably and sealedly connected to the connector 1. Specifically, a through hole is provided inside the connector 1, through which the sliding rod 2 passes. Both the sliding rod 2 and the through hole have circular cross-sections, and the sliding rod 2 can slide in the axial direction and rotate in the circumferential direction inside the connector 1.

[0034] In order to improve the sealing performance between the sliding rod 2 and the connector 1, a sealing groove is opened on the inner wall of the connector 1, and a sliding sealing ring 5 is embedded in the sealing groove. The sliding rod 2 is passed through the inside of the sliding sealing ring 5, and the sliding sealing ring 5 seals the sliding rod 2 and the connector 1. In order to improve the sealing effect, the number of sealing grooves is two. Similarly, the number of sliding sealing rings 5 is two, and a sliding sealing ring 5 is provided in each sealing groove.

[0035] Reference Figure 4 and Figure 5 The plugging head 3 is fixed to one end of the slide rod 2 and is located on the end of the slide rod 2 near the ball valve 300. When in use, the plugging head 3 extends into the interior of the ball valve 300. The plugging head 3 can be integrally formed with the slide rod 2 and can move along with the slide rod 2. At the same time, the side of the plugging head 3 near the connector 1 can be engaged with the inner wall of the connector 1. Specifically, a slot 12 is provided inside the connector 1 near the ball valve 300. The connector 1 can extend into the slot 12 and abut against the inner wall of the slot 12, which limits the plugging head 3.

[0036] The plugging head 3 is threadedly connected to the base 200. Specifically, the side wall of the plugging head 3 is provided with an external thread, and the inner wall of the base 200 is provided with an internal thread. The plugging head 3 is threadedly connected to the internal thread of the base 200 via the external thread. To improve the sealing performance between the plugging head 3 and the base 200, a limiting protrusion 201 is formed on the inner wall of the base 200. At the same time, a blocking sealing ring 6 is sleeved on the external thread of the plugging head 3. The blocking sealing ring 6 is located between the limiting protrusion 201 and the plugging head 3. When in use, the plugging head 3 abuts the blocking sealing ring 6 against the limiting protrusion 201.

[0037] In order to facilitate the staff to know the depth of the sliding rod 2 inserted into the ball valve 300, a scale line 21 is provided on the axial surface of the sliding rod 2.

[0038] Reference Figure 4 and Figure 5 At the same time, in order to facilitate the staff to rotate the slide rod 2, the end of the slide rod 2 away from the ball valve 300 is threadedly connected to a rotating handle 7. Specifically, the slide rod 2 is provided with an external thread, and the rotating handle 7 is provided with an internal thread. The internal thread of the rotating handle 7 is threadedly connected to the external thread of the slide rod 2. During use, in order to improve the stability of the threaded connection between the rotating handle 7 and the slide rod 2, and to facilitate the use of the rotating handle 7 to twist the slide rod 2 and the sealing head 3 on the slide rod 2, a locking nut 8 is also threadedly connected to the external thread of the slide rod 2. The locking nut 8 is located on the side of the rotating handle 7 away from the ball valve 300, and the locking nut 8 abuts against the rotating handle 7.

[0039] The process of replacing the ball valve 300 or the waterproof gasket 400 is as follows:

[0040] Pre-install the connection sealing ring 4 on the external thread of the connection head 1 and the blocking sealing ring 6 on the external thread of the blocking head 3;

[0041] Then, the connector 1 is threadedly connected to the ball valve 300, and the connector 1 presses the connection sealing ring 4 against the ball valve 300;

[0042] Next, open the ball valve 300, push the rotary handle 7 to slide the slide rod 2 on the connector 1, and allow the plugging head 3 to pass through the ball valve 300 and extend into the base 200. At the same time, observe the scale line 21 on the slide rod 2. After the plugging head 3 is inserted into place, rotate the rotary handle 7 to allow the slide rod 2 to drive the plugging head 3 to rotate, so as to screw the plugging head 3 onto the base 200. The plugging head 3 presses the sealing ring 6 against the base 200.

[0043] Then remove the locking nut 8 and the rotating handle 7 from the slide rod 2 in sequence;

[0044] Finally, screw the ball valve 300 to disengage it from the base 200, and remove the ball valve 300 and the connector 1 from the slide rod 2. You can also remove the waterproof pad 400, and then replace it with a new waterproof pad 400 or a new ball valve 300. Disassemble the old ball valve 300 from the connector 1, and re-thread the new ball valve 300 to the connector 1. Then, put the new waterproof pad 400 on the base 200, and then re-thread the new ball valve 300 through the slide rod 2 to connect it to the base 200.

[0045] Then, thread the rotating handle 7 and the locking nut 8 onto the slide rod 2 again, and then turn the rotating handle 7 in the opposite direction to make the slide rod 2 drive the blocking head 3 to rotate in the opposite direction, separate the blocking head 3 from the base 200, and pull the blocking head 3 out of the ball valve 300, then close the ball valve 300, and finally remove the connector 1 from the ball valve 300. At this point, the replacement of the new ball valve 300 or the new waterproof gasket 400 is completed.

[0046] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A device for replacing a ball valve or waterproof gasket under pressure, characterized in that: include: Connector, threaded onto the ball valve; A sliding rod is inserted into the connector and is slidably and sealingly connected to the connector; as well as The plugging head is fixed on one end of the sliding rod close to the ball valve and is clamped with the connecting head to pass through the ball valve and be sealed with the base thread.

2. The device for replacing a ball valve or waterproof gasket under pressure according to claim 1, characterized in that: The connecting head is sleeved with a connecting sealing ring, and the connecting sealing ring is located between the connecting head and the ball valve.

3. The device for replacing a ball valve or waterproof gasket under pressure according to claim 1, characterized in that: A sliding sealing ring is embedded in the interior of the connector, and the sliding rod is passed through the sliding sealing ring.

4. The device for replacing a ball valve or waterproof gasket under pressure according to claim 3, characterized in that: The number of the sliding sealing rings is two.

5. The device for replacing a ball valve or waterproof gasket under pressure according to claim 1, characterized in that: The blocking head is provided with a blocking sealing ring, a limiting protrusion is formed on the inner wall of the base, and the blocking sealing ring is located between the blocking head and the limiting protrusion.

6. The device for replacing a ball valve or waterproof gasket under pressure according to claim 1, characterized in that: Scale lines are provided on the axial surface of the slide rod.

7. The device for replacing a ball valve or waterproof gasket under pressure according to claim 1, characterized in that: A rotating handle is threadedly connected to the slide rod, and the rotating handle is located at an end of the slide rod away from the ball valve.

8. The device for replacing a ball valve or waterproof gasket under pressure according to claim 7, characterized in that: A locking nut is threadedly connected to the sliding rod. The locking nut is located on a side of the rotating handle away from the ball valve, and the locking nut abuts against the rotating handle.

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