CN219841073U - A one-piece ball valve based on pressure balance - Google Patents

Abstract

The utility model provides a pressure balance-based one-piece ball valve, which belongs to the field of valves and comprises: a valve housing; the sealing device comprises a valve casing, a first sealing gasket, a second sealing gasket and a sealing ball, wherein the first sealing gasket, the second sealing gasket and the sealing ball are arranged in the valve casing, the first sealing gasket and the second sealing gasket are positioned on two sides of the sealing ball, the first sealing gasket and the second sealing gasket are in sealing contact with the sealing ball, a shaft rod is arranged at the upper end of the sealing ball, and a handle is arranged on the shaft rod; the detachable balance assembly comprises a first support ring and a second support ring which are movably connected in the valve casing, and the first support ring is propped against the first sealing gasket. The detachable first support ring and the detachable second support ring can bear water flow pressure, so that the pressure born by the first sealing gasket and the second sealing gasket is balanced, the abrasion between the first sealing gasket and the second sealing gasket and the sealing ball is reduced, the first sealing gasket and the second sealing gasket are convenient to detach and replace, and the detachable first support ring and the detachable second support ring are simple in structure and convenient to operate.

Description

A one-piece ball valve based on pressure balance

Technical field

The utility model relates to the technical field of valves, in particular to a one-piece ball valve based on pressure balance.

Background technique

Ball valve, a valve whose opening and closing parts are driven by the valve stem and rotate around the axis of the ball valve. It can also be used for the regulation and control of fluids. The hard-sealed V-shaped ball valve has a strong shear force between the V-shaped ball core and the metal valve seat with hard alloy surfacing. It is especially suitable for materials containing fibers and tiny solid particles. etc. media. The multi-way ball valve can not only flexibly control the confluence, divergence, and flow direction switching of media on the pipeline, but can also close any channel and connect the other two channels. The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to rotate 90 degrees and a small rotational torque to close tightly. Ball valves are most suitable for use as switches and shut-off valves.

The existing ball valve sealing ring is fixed and is used once. It will leak if it is slightly worn, and it is difficult to repair and replace, causing the entire ball valve to be scrapped. When the current flow of the ball valve is small in the pipe, the water flow cannot move the opening and closing parts. When the diversion channel is full, the water flow will only exert force on the lower part of the opening and closing part, so that the stress on the valve body is concentrated on the lower part of the opening and closing part, thus causing the sealing ring connected to the opening and closing part to The lower part is subject to more friction from the opening and closing parts. If this happens for a long time, it is easy to cause serious local wear of the sealing ring, thereby reducing the local sealing performance of the sealing ring and affecting the performance of the ball valve.

Utility model content

In view of the deficiencies in the prior art, the present utility model provides a one-piece ball valve based on pressure balance.

The embodiment of the present invention provides a one-piece ball valve based on pressure balance, including:

valve housing;

A first sealing gasket, a second sealing gasket, and a sealing ball. The first sealing gasket, the second sealing gasket, and the sealing ball are installed in the valve housing, and the first sealing gasket and the second sealing gasket are located on both sides of the sealing ball. , and the first sealing gasket and the second sealing gasket are sealed against the sealing ball, a shaft is installed on the upper end of the sealing ball, and a handle is installed on the shaft;

The detachable balance component includes a first support ring and a second support ring movably connected in the valve housing. The first support ring is against the first sealing gasket, and the second support ring is against the first sealing gasket. The two sealing pads are set to offset each other.

Further, the shaft penetrates the upper end side wall of the valve housing and rotates in a sealed manner.

Further, the outer walls of the first support ring and the second support ring are provided with external threads, and the inner wall of the valve housing is provided with internal threads, and the internal threads are engaged with the external threads.

Further, the inner diameters of the first sealing gasket, the second sealing gasket, the first support ring and the second support ring are the same.

Further, the inner walls of the first support ring and the second support ring are fixedly connected with connecting rods along the diameter direction.

Further, both ends of the valve housing are provided with integrated connectors, and the outer wall of the connector is provided with connecting threads.

Compared with the existing technology, this utility model has the following beneficial effects:

The utility model is provided with a detachable first support ring and a second support ring which can not only withstand the water flow pressure, balance the pressure on the first sealing gasket and the second sealing gasket, reduce the wear between the sealing ball and the sealing ball, and facilitate the alignment. The first sealing gasket and the second sealing gasket are disassembled and replaced, with simple structure and convenient operation.

Description of the drawings

Figure 1 is a schematic structural diagram of a one-piece ball valve based on pressure balance in an embodiment of the present invention.

Figure 2 is a front view of a one-piece ball valve based on pressure balance in the embodiment of the present invention.

In the above drawings: 1 valve housing, 2 sealing ball, 3 shaft, 4 handle, 5 first sealing gasket, 6 second sealing gasket, 7 first support ring, 8 second support ring, 9 internal thread, 10 external Thread, 11 connector, 12 connecting rod.

Detailed ways

The technical solutions in the present utility model will be further described below in conjunction with the accompanying drawings and examples.

As shown in Figure 1-2, the embodiment of the present utility model proposes a one-piece ball valve based on pressure balance, including:

Valve housing 1; both ends of the valve housing 1 are provided with integrated connectors 11, and the outer wall of the connector 11 is provided with connecting threads to connect to external pipes;

The first sealing gasket 5, the second sealing gasket 6, and the sealing ball 2 have a water channel running through the sealing ball 2. The inner diameter of the water channel is the same as the inner diameter of the first sealing gasket 5; the first sealing gasket 5 and the second sealing gasket 5 The gasket 6 and the sealing ball 2 are installed in the valve housing 1, and the first sealing gasket 5 and the second sealing gasket 6 are located on both sides of the sealing ball 2, and the first sealing gasket 5, the second sealing gasket 6 and the sealing ball 2 are sealed against each other. , a shaft 3 is installed on the upper end of the sealing ball 2, a handle 4 is installed on the shaft 3, the shaft 3 penetrates the upper side wall of the valve housing 1 and rotates in a sealed manner;

The detachable balance assembly includes a first support ring 7 and a second support ring 8 movably connected in the valve housing 1. The inner walls of the first support ring 7 and the second support ring 8 are fixedly connected with The connecting rod 12 in the direction can be rotated by limiting the connecting rod 12 with hands or tools, so that the first support ring 7 and the second support ring 8 can be rotated to facilitate their installation and disassembly;

The outer walls of the first support ring 7 and the second support ring 8 are both provided with external threads 10, and the inner wall of the valve housing 1 is provided with internal threads 9. The internal threads 9 are meshed with the external threads 10; the first support ring 7 is connected to the first seal The gasket 5 is offset, and the second support ring 8 and the second sealing pad 6 are arranged to offset each other; the inner diameters of the first sealing pad 5, the second sealing pad 6, the first support ring 7, and the second support ring 8 are the same.

The detailed working process of this utility model is as follows:

1. During installation, offset the first sealing gasket 5 and the second sealing gasket 6 against the sealing ball 2, and then install the first support ring 7 and the second support ring 8 so that they are opposite to the first sealing gasket 5 and the second sealing gasket. 6 offset the limit to ensure that the first sealing gasket 5, the second sealing gasket 6 and the sealing ball 2 are stably offset to ensure the sealing performance. It is convenient to install the first sealing gasket 5 and the second sealing gasket 6; then reverse the connecting rod. 12, the first support ring 7 and the second support ring 8 can be removed to facilitate the disassembly of the first sealing gasket 5 and the second sealing gasket 6 for replacement, and the operation is simple and convenient;

2. When the water flow cannot fill the diversion channel in the valve housing 1, the water flow will only exert force on the lower part of the opening and closing part. At this time, the first support ring 7 or the second support ring 8 can withstand the force of the water flow. The pressure will not affect the first sealing gasket 5 and the second sealing gasket 6, and will not change the pressure between the first sealing gasket 5, the second sealing gasket 6 and the sealing ball 2, thereby reducing wear and ensuring that the The pressures on the first sealing gasket 5 and the second sealing gasket 6 are balanced.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the present utility model can be modified. If the technical solution is modified or equivalently substituted without departing from the purpose and scope of the technical solution of the present utility model, it shall be covered by the claims of the present utility model.

Claims (6)

1. A one-piece ball valve based on pressure balance, characterized by including: valve housing(1); The first sealing gasket (5), the second sealing gasket (6), and the sealing ball (2) are installed in the valve housing (2). 1), and the first sealing gasket (5) and the second sealing gasket (6) are located on both sides of the sealing ball (2), and the first sealing gasket (5), the second sealing gasket (6) and the sealing ball (2) The seals are offset, a shaft (3) is installed on the upper end of the sealing ball (2), and a handle (4) is installed on the shaft (3); The detachable balance component includes a first support ring (7) and a second support ring (8) movably connected in the valve housing (1). The first support ring (7) is connected to the first support ring (7). The sealing gasket (5) offsets, and the second support ring (8) and the second sealing gasket (6) offset. 2. A one-piece ball valve based on pressure balance according to claim 1, characterized in that: The shaft (3) penetrates the upper end side wall of the valve housing (1) and rotates in a sealed manner. 3. A one-piece ball valve based on pressure balance according to claim 1, characterized in that: The outer walls of the first support ring (7) and the second support ring (8) are provided with external threads (10), and the inner wall of the valve housing (1) is provided with internal threads (9). The internal threads ( 9) Engage with the external thread (10). 4. A one-piece ball valve based on pressure balance according to claim 1, characterized in that: The inner diameters of the first sealing gasket (5), the second sealing gasket (6), the first support ring (7) and the second support ring (8) are the same. 5. A one-piece ball valve based on pressure balance according to claim 1, characterized in that: The inner walls of the first support ring (7) and the second support ring (8) are fixedly connected with connecting rods (12) along the diameter direction. 6. A one-piece ball valve based on pressure balance according to claim 1, characterized in that: Both ends of the valve housing (1) are provided with integrated connectors (11), and the outer wall of the connector (11) is provided with connecting threads.