Combined ball valve

Abstract

The utility model provides a combined ball valve, and belongs to the technical field of valves. The combined ball valve solves the problem that an existing valve cannot slow down the flow speed of liquid, and comprises a valve body provided with a water inlet, a detachable drainage part is arranged on the valve body, a water outlet is formed in the drainage part, and a mounting cavity communicated with the water outlet and the water inlet is formed in the valve body. A valve ball assembly is arranged in the mounting cavity, an upper ball seat and a lower ball seat are arranged on the valve ball assembly, a clamping block is arranged on the lower ball seat, a buffer flow channel is formed in the clamping block, a clamping cavity is formed in the upper ball seat, a plurality of positioning columns are further arranged on the lower ball seat, expansion joints are formed in the positioning columns, a positioning hole is formed in the upper ball seat, and the upper ball seat and the lower ball seat are fixedly connected through the expansion joints. The device has the advantages of simplicity and convenience in disassembly and assembly and wide application range.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves and relates to a ball valve, in particular to a combined ball valve. Background Art

[0002] The ball valve is a common fluid control valve with a relatively simple structure. The compact structure makes the ball valve easy to install and maintain, while also reducing manufacturing costs.

[0003] In some high-pressure or high-speed fluid systems, directly closing or opening the ball valve may cause severe impact on the ball, valve seat and pipeline, resulting in damage. Therefore, it is necessary to design a liquid-buffered ball valve to reduce damage to the pipeline and the ball valve. Summary of the Invention

[0004] The purpose of the utility model is to solve the above problems in the prior art and to provide a combined ball valve which is easy to assemble and disassemble and has a good buffering effect.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a combined ball valve, characterized in that it includes a valve body provided with a water inlet, the valve body is provided with a detachable drainage member, the drainage member is provided with a water outlet, the valve body is provided with a mounting cavity connecting the water outlet and the water inlet, the mounting cavity is provided with a valve ball assembly, the valve ball assembly is provided with an upper ball seat and a lower ball seat, the lower ball seat is provided with a clamping block, and a buffer flow channel is provided in the clamping block, the upper ball seat is provided with a clamping cavity, the lower ball seat is also provided with a plurality of positioning columns, and the positioning columns are provided with expansion joints, and the upper ball seat is provided with a positioning hole.

[0006] In the above-mentioned combined ball valve, the buffer flow channel is a Tesla valve.

[0007] In the above-mentioned combined ball valve, a control rod is provided in the installation cavity, a limiting groove for clamping the control rod is provided on the upper ball seat, and a control valve rod is provided on the top of the control rod.

[0008] In the above-mentioned combined ball valve, flow guide openings are provided on both sides of the valve ball assembly.

[0009] In the above-mentioned combined ball valve, sealing rings are provided on both sides of the valve ball assembly.

[0010] Compared with the existing technology, this combined ball valve is equipped with a combined valve ball assembly, and through the Tesla valve, the ball valve can replace the lower ball seat according to different usage scenarios, so that the ball valve can adapt to different usage scenarios including buffering, conventional and acceleration. The limit groove and the control rod are coordinated, the control structure is simple, and it also plays a guiding role when installing the valve ball assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of this combined ball valve.

[0012] Figure 2 It is a half-section structural diagram of the combined ball valve.

[0013] Figure 3 It is a structural diagram of the lower ball seat of the combined ball valve.

[0014] Figure 4 It is a structural diagram of the upper ball seat of this combined ball valve.

[0015] In the figure, 1. control valve stem; 2. valve ball assembly; 3. drain piece; 4. valve body; 5. upper ball seat; 6. water outlet; 7. lower ball seat; 8. buffer flow channel; 9. sealing ring; 10. water inlet; 11. installation cavity; 12. control rod; 13. diversion opening; 14. clamping block; 15. positioning column; 16. expansion joint; 17. Tesla valve; 18. limit groove; 19. positioning hole; 20. clamping cavity. DETAILED DESCRIPTION

[0016] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0017] like Figure 1 、 2 As shown in Figures 3 and 4, the combined ball valve includes a valve body 4 with a water inlet 10, a detachable drain component 3 is provided on the valve body 4, a water outlet 6 is provided on the drain component 3, a mounting cavity 11 connecting the water outlet 6 and the water inlet 10 is provided in the valve body 4, a valve ball assembly 2 is provided in the mounting cavity 11, an upper ball seat 5 and a lower ball seat 7 are provided on the valve ball assembly 2, a clamping block 14 is provided on the lower ball seat 7, and a buffer flow channel 8 is provided in the clamping block 14, a clamping cavity 20 is provided on the upper ball seat 5, and a plurality of positioning columns 15 are further provided on the lower ball seat 7, and an expansion joint 16 is provided on the positioning columns 15, and a positioning hole 19 is provided on the upper ball seat 5. During installation, the upper ball seat 5 is docked with the lower ball seat 7 and the diversion direction of the buffer flow channel 8 is determined, the assembled valve ball assembly 2 is placed in the mounting cavity 11, and the drainage component 3 is fixed to complete the assembly of the buffer ball valve.

[0018] In the first embodiment, when buffering is required, the lower ball seat 7 provided with the buffer flow channel 8 is normally installed, and the water flow passes through the buffer flow channel 8 to impact and decelerate.

[0019] In the second embodiment, when buffering is not required, the lower ball seat 7 without the buffering flow channel 8 can be replaced, which is consistent with the traditional ball valve.

[0020] Preferably, the buffer flow channel 8 is a Tesla valve 17, which has the functions of acceleration and circulation. Before installation, the installation direction is confirmed to reduce the outflow speed of the water flow.

[0021] Preferably, a control rod 12 is provided in the installation cavity 11. A limiting groove 18 for engaging the control rod 12 is provided on the upper ball seat 5. A control valve stem 1 is provided at the top of the control rod 12. The limiting groove 18 can connect the valve ball assembly 2 and the control rod 12, and at the same time, it plays a guiding and positioning role when installing the valve ball assembly 2.

[0022] Preferably, flow guide openings 13 are provided on both sides of the valve ball assembly 2 .

[0023] Preferably, sealing rings 9 are provided on both sides of the valve ball assembly 2 .

[0024] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0025] Although this document frequently uses terms such as control valve stem 1, valve ball assembly 2, drain member 3, valve body 4, upper ball seat 5, water outlet 6, lower ball seat 7, buffer flow channel 8, sealing ring 9, water inlet 10, installation cavity 11, control rod 12, diversion opening 13, clamping block 14, positioning column 15, expansion joint 16, Tesla valve 17, limit groove 18, positioning hole 19, and clamping cavity 20, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A combined ball valve, characterized in that: The invention comprises a valve body (4) provided with a water inlet (10), the valve body (4) being provided with a detachable drainage member (3), the drainage member (3) being provided with a water outlet (6), the valve body (4) being provided with a mounting cavity (11) communicating with the water outlet (6) and the water inlet (10), the mounting cavity (11) being provided with a valve ball assembly (2), the valve ball assembly (2) being provided with an upper ball seat (5) and a lower ball seat (7), the lower ball seat (7) being provided with a clamping block (14), and a buffer flow channel (8) being provided in the clamping block (14), the upper ball seat (5) being provided with a clamping cavity (20), the lower ball seat (7) being further provided with a plurality of positioning columns (15), and the positioning columns (15) being provided with an expansion joint (16), and the upper ball seat (5) being provided with a positioning hole (19).

2. A combined ball valve according to claim 1, characterized in that: The buffer flow channel (8) is a Tesla valve (17).

3. A combined ball valve according to claim 1, characterized in that: A control rod (12) is provided in the installation cavity (11).

4. A combined ball valve according to claim 1, characterized in that: The upper ball seat (5) is provided with a limiting groove (18) for clamping the control rod (12), and a control valve rod (1) is provided on the top of the control rod (12).

5. A combined ball valve according to claim 1, characterized in that: Both sides of the valve ball assembly (2) are provided with flow guide openings (13).

6. A combined ball valve according to claim 1, characterized in that: Sealing rings (9) are provided on both sides of the valve ball assembly (2).

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