Four-way ball valve

Abstract

The utility model discloses a four-way ball valve which comprises a valve body, a spherical valve element, a first valve seat, a second valve seat, a third valve seat, a fourth valve seat, a first connecting body, a second connecting body, a third connecting body and a fourth connecting body. The first connecting body, the second connecting body, the third connecting body and the fourth connecting body are arranged on the periphery of the valve body in a cross mode and detachably connected with the valve body, the first valve seat is arranged between the first connecting body and the spherical valve element, the second valve seat is arranged between the second connecting body and the spherical valve element, and the third valve seat is arranged between the third connecting body and the spherical valve element. And the fourth valve seat is arranged between the fourth connecting body and the spherical valve core. After the sealing ring is abraded, the spring extends, so that the sealing ring is still tightly attached to the surface of the valve element, and the sealing performance of the valve is guaranteed.

Description

Technical Field

[0001] The utility model relates to a ball valve, in particular to a four-way ball valve, belonging to the technical field of valves. Background Art

[0002] The four-way ball valve has four interfaces that can connect two circuits at the same time, and the two circuits can be switched back and forth by rotating the internal valve core. The four-way ball valve can switch between the two circuits with only one valve, which can effectively reduce the cost of the overall pipeline. At present, there are many kinds of valve core structures for four-way ball valves, but no matter which structure is adopted, the valve core and valve body of the main ball valve need to remain sealed after switching. Although the existing technology uses sealing rings to ensure this sealing effect, after long-term use, the sealing ring will wear out, which will directly lead to the deterioration of the sealing between the valve core and the valve body, causing the media of the two circuits to leak into each other. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a four-way ball valve, which solves the problem that the sealing performance becomes poor after the sealing ring is worn.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A four-way ball valve comprises a valve body, a spherical valve core, a first valve seat, a second valve seat, a third valve seat, a fourth valve seat, a first connecting body, a second connecting body, a third connecting body and a fourth connecting body. The spherical valve core is rotatably arranged in the valve body. The first connecting body, the second connecting body, the third connecting body and the fourth connecting body are arranged in a cross shape around the valve body and are detachably connected to the valve body. The first valve seat is arranged between the first connecting body and the spherical valve core, the second valve seat is arranged between the second connecting body and the spherical valve core, the third valve seat is arranged between the third connecting body and the spherical valve core, and the fourth valve seat is arranged between the fourth connecting body and the spherical valve core.

[0006] Furthermore, a sealing ring is provided on one end of the first valve seat, the second valve seat, the third valve seat and the fourth valve seat facing the spherical valve core.

[0007] Furthermore, a sealing ring groove is formed on one end of the first valve seat, the second valve seat, the third valve seat and the fourth valve seat facing the spherical valve core, and an inner conical hole structure matching the spherical valve core is provided on the inner side of one end of the first valve seat, the second valve seat, the third valve seat and the fourth valve seat facing the spherical valve core, a barb structure is provided on the end of the sealing ring groove close to the inner conical hole structure, and a pattern for increasing friction is provided on the side of the sealing ring groove away from the inner conical hole structure, and an anti-barb structure matching the barb structure of the sealing ring groove is provided on the inner side of the sealing ring.

[0008] Furthermore, the first valve seat, the second valve seat, the third valve seat and the fourth valve seat are in a stepped structure at one end away from the spherical valve core, and the inner side of the end where the first connector, the second connector, the third connector and the fourth connector are connected to the valve body is provided with a stepped hole matching the stepped structure of the first valve seat, the second valve seat, the third valve seat and the fourth valve seat.

[0009] Furthermore, an annular spring groove is opened on the end surface of one end of the first connector, the second connector, the third connector and the fourth connector connected to the valve body, and the spring is embedded in the spring groove, one end of the spring rests on the bottom of the spring groove, and the other end of the spring rests on the step surface of the step-shaped structure of the first valve seat, the second valve seat, the third valve seat or the fourth valve seat to provide the first valve seat, the second valve seat, the third valve seat or the fourth valve seat with elastic force facing the spherical valve core.

[0010] Furthermore, two channels are opened in the spherical valve core, and the two channels are separated by a partition plate arranged along the radial direction of the spherical valve core.

[0011] Furthermore, O-rings are provided at the connections between the first connector, the second connector, the third connector and the fourth connector and the first valve seat, the second valve seat, the third valve seat and the fourth valve seat, and O-rings are provided at the connections between the first connector, the second connector, the third connector and the fourth connector and the valve body.

[0012] Furthermore, the upper end of the valve body is provided with a valve cover, a valve stem, a packing, a packing cover and a bracket. The valve cover is detachably fixed to the upper end of the valve body, the lower end of the valve stem is fixedly connected to the upper end of the spherical valve core and the valve stem is rotatably set at the upper end of the valve body, the packing is filled in the gap between the valve cover and the valve stem, the upper end of the packing is pressed and fixed by the packing cover, and the bracket is detachably fixed to the upper end of the valve cover.

[0013] Compared with the prior art, the present invention has the following advantages and effects: a four-way ball valve of the present invention adds a valve seat between the valve core and the connector, and provides an elastic force pressing the valve core to the valve seat through a spring, so that after the sealing ring is worn, the spring stretches and still makes the sealing ring fit tightly to the surface of the valve core, thereby ensuring the sealing of the valve; a barb structure is adopted between the sealing ring and the valve seat to prevent the sealing ring from falling off and shifting when the valve core rotates, thereby ensuring the sealing of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a four-way ball valve of the present utility model.

[0015] Figure 2 It is a top view of a four-way ball valve of the present utility model.

[0016] Figure 3 It is a partial schematic diagram of a four-way ball valve of the present utility model. DETAILED DESCRIPTION

[0017] In order to elaborate on the technical solutions adopted by the present invention to achieve the predetermined technical purpose, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments, and the technical means or technical features in the embodiments of the present invention can be replaced without paying creative work. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0018] like Figure 1 and Figure 2 As shown, a four-way ball valve of the present invention comprises a valve body 1, a spherical valve core 2, a first valve seat 3, a second valve seat 4, a third valve seat 5, a fourth valve seat 6, a first connecting body 7, a second connecting body 8, a third connecting body 9 and a fourth connecting body 10. The spherical valve core 2 is rotatably arranged in the valve body 1, the first connecting body 7, the second connecting body 8, the third connecting body 9 and the fourth connecting body 10 are arranged in a cross shape around the valve body 1 and are detachably connected to the valve body 1, the first valve seat 3 is arranged between the first connecting body 7 and the spherical valve core 2, the second valve seat 4 is arranged between the second connecting body 8 and the spherical valve core 2, the third valve seat 5 is arranged between the third connecting body 9 and the spherical valve core 2, and the fourth valve seat 6 is arranged between the fourth connecting body 10 and the spherical valve core 2.

[0019] Sealing rings 11 are provided on the ends of the first valve seat 3 , the second valve seat 4 , the third valve seat 5 and the fourth valve seat 6 facing the spherical valve core 2 .

[0020] like Figure 3 As shown, a sealing ring groove 12 is opened at one end of the first valve seat 3, the second valve seat 4, the third valve seat 5 and the fourth valve seat 6 facing the spherical valve core 2, and an inner conical hole structure matching the spherical valve core 2 is provided on the inner side of the end of the first valve seat 3, the second valve seat 4, the third valve seat 5 and the fourth valve seat 6 facing the spherical valve core 2, a barb structure is provided at the end of the sealing ring groove 12 close to the inner conical hole structure, and a friction-increasing pattern is provided on the side of the sealing ring groove 12 away from the inner conical hole structure, and an anti-barb structure matching the barb structure of the sealing ring groove 12 is provided on the inner side of the sealing ring 11. The sealing ring 11 is embedded in the sealing ring groove 12. The area of ​​the sealing ring groove 12 on the side away from the inner tapered hole structure is larger. By setting the friction-increasing texture, the sealing ring 11 can be effectively prevented from sliding in the sealing ring groove 12. On the other side, the sealing ring 11 is completely locked and fixed in the sealing ring groove 12 through the mutually engaged structure of the barb structure and the counter-barb structure, preventing the sealing ring 11 from falling off and displacement.

[0021] The first valve seat 3, the second valve seat 4, the third valve seat 5 and the fourth valve seat 6 have a stepped structure at one end away from the spherical valve core 2, and the inner side of the end where the first connecting body 7, the second connecting body 8, the third connecting body 9 and the fourth connecting body 1 are connected to the valve body 1 is provided with a stepped hole that matches the stepped structure of the first valve seat 3, the second valve seat 4, the third valve seat 5 and the fourth valve seat 6.

[0022] An annular spring groove 13 is formed on the end surface of the first, second, third, and fourth connectors 7, 8, 9, and 10 connected to the valve body 1. A spring is embedded in the spring groove 13, with one end of the spring resting on the bottom of the spring groove 13 and the other end of the spring resting on the stepped surface of the stepped structure of the first, second, third, or fourth valve seats 3, 4, 5, or 6, providing elastic force against the spherical valve core 2 for the first, second, third, or fourth valve seats 3, 4, 5, or 6. By adding a valve seat between the valve core and the connector and providing an elastic force pressing the valve seat toward the valve core via the spring, even after the sealing ring wears, the extended spring still allows the sealing ring to fit tightly against the valve core surface, thus ensuring the sealing of the valve.

[0023] Two channels are opened in the spherical valve core 2 , and the two channels are separated by a partition plate arranged along the radial direction of the spherical valve core 2 .

[0024] O-rings 14 are provided at the connections between the first connecting body 7, the second connecting body 8, the third connecting body 9 and the fourth connecting body 10 and the first valve seat 3, the second valve seat 4, the third valve seat 5 and the fourth valve seat 6, and O-rings 14 are provided at the connections between the first connecting body 7, the second connecting body 8, the third connecting body 9 and the fourth connecting body 10 and the valve body 1.

[0025] The upper end of the valve body 1 is provided with a valve cover 15, a valve stem 16, a packing 17, a packing cover 18 and a bracket 19. The valve cover 15 is detachably fixed to the upper end of the valve body 1, the lower end of the valve stem 16 is fixedly connected to the upper end of the spherical valve core 2 and the valve stem 16 is rotatably set at the upper end of the valve body 1, the packing 17 is filled in the gap between the valve cover 15 and the valve stem 16, the upper end of the packing 17 is pressed and fixed by the packing cover 18, and the bracket 19 is detachably fixed to the upper end of the valve cover 15.

[0026] The utility model relates to a four-way ball valve, which adds a valve seat between the valve core and the connector, and provides the valve seat with an elastic force pressing the valve core through a spring. In this way, after the sealing ring is worn, the spring stretches to still make the sealing ring fit tightly against the surface of the valve core, thereby ensuring the sealing of the valve; a barb structure is adopted between the sealing ring and the valve seat to prevent the sealing ring from falling off and shifting when the valve core rotates, thereby ensuring the sealing of the sealing ring.

[0027] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement of the above embodiments made according to the technical essence of the present invention, within the spirit and principles of the present invention, without departing from the content of the technical solution of the present invention, shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A four-way ball valve, characterized by: The utility model comprises a valve body, a spherical valve core, a first valve seat, a second valve seat, a third valve seat, a fourth valve seat, a first connecting body, a second connecting body, a third connecting body and a fourth connecting body. The spherical valve core is rotatably arranged in the valve body. The first connecting body, the second connecting body, the third connecting body and the fourth connecting body are arranged in a cross shape around the valve body and are detachably connected to the valve body. The first valve seat is arranged between the first connecting body and the spherical valve core, the second valve seat is arranged between the second connecting body and the spherical valve core, the third valve seat is arranged between the third connecting body and the spherical valve core, and the fourth valve seat is arranged between the fourth connecting body and the spherical valve core.

2. A four-way ball valve according to claim 1, characterized in that: Sealing rings are provided on one end of the first valve seat, the second valve seat, the third valve seat and the fourth valve seat facing the spherical valve core.

3. A four-way ball valve according to claim 2, characterized in that: The first valve seat, the second valve seat, the third valve seat and the fourth valve seat are provided with a sealing ring groove on one end facing the spherical valve core, and an inner tapered hole structure matching the spherical valve core is provided on the inner side of the first valve seat, the second valve seat, the third valve seat and the fourth valve seat on one end facing the spherical valve core, a barb structure is provided on the end of the sealing ring groove close to the inner tapered hole structure, and a friction-increasing pattern is provided on the side of the sealing ring groove away from the inner tapered hole structure, and an anti-barb structure matching the barb structure of the sealing ring groove is provided on the inner side of the sealing ring.

4. The four-way ball valve according to claim 1, characterized in that: The first valve seat, the second valve seat, the third valve seat and the fourth valve seat have a stepped structure at one end away from the spherical valve core, and the inner side of the end where the first connecting body, the second connecting body, the third connecting body and the fourth connecting body are connected to the valve body is provided with a stepped hole matching the stepped structure of the first valve seat, the second valve seat, the third valve seat and the fourth valve seat.

5. The four-way ball valve according to claim 4, characterized in that: An annular spring groove is formed on the end surface of one end of the first connecting body, the second connecting body, the third connecting body and the fourth connecting body connected to the valve body, and a spring is embedded in the spring groove. One end of the spring rests on the bottom of the spring groove, and the other end of the spring rests on the step surface of the step-shaped structure of the first valve seat, the second valve seat, the third valve seat or the fourth valve seat to provide elastic force facing the spherical valve core for the first valve seat, the second valve seat, the third valve seat or the fourth valve seat.

6. The four-way ball valve according to claim 1, characterized in that: Two channels are opened in the spherical valve core, and the two channels are separated by a partition plate arranged along the radial direction of the spherical valve core.

7. The four-way ball valve according to claim 1, characterized in that: O-rings are provided at the connections between the first connector, the second connector, the third connector and the fourth connector and the first valve seat, the second valve seat, the third valve seat and the fourth valve seat, and O-rings are provided at the connections between the first connector, the second connector, the third connector and the fourth connector and the valve body.

8. The four-way ball valve according to claim 1, characterized in that: The upper end of the valve body is provided with a valve cover, a valve stem, a packing, a packing cover and a bracket. The valve cover is detachably fixed to the upper end of the valve body. The lower end of the valve stem is fixedly connected to the upper end of the spherical valve core and the valve stem is rotatably set at the upper end of the valve body. The packing is filled in the gap between the valve cover and the valve stem. The upper end of the packing is pressed and fixed by the packing cover, and the bracket is detachably fixed to the upper end of the valve cover.

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