Compact double-block drain combination ball valve

Abstract

The utility model discloses a compact double blocking discharge combined ball valve in the technical field of valve, including valve body, and the valve body is equipped with first flow channel and second flow channel, the non end position of second flow channel intercommunication first flow channel, and the first ball valve structure and second ball valve structure are arranged on the first flow channel path interval, and the second flow channel sets up third ball valve structure, and the communication point of second flow channel and first flow channel is located between first ball valve structure and second ball valve structure, three ball valves can control respectively, and independent, can cut off medium independently, and first ball valve structure and second ball valve structure realize double blocking function, realize the redundant configuration of cut -off valve on main pipeline, ensure pipeline no internal leakage, safe operation, and third ball valve structure is for the relief valve, can release pressure, also can be used for medium sampling in main pipeline, and three ball valves are concentrated in a valve body, and the structure is very compact, reduces the space occupation of valve structure whole, and convenient operation reduces production and operating cost.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a compact double-blocking discharge combination ball valve. Background Technology

[0002] In industrial piping systems, multiple valves are often required to achieve both shut-off and discharge functions. The traditional approach is to install multiple independent ball valves, which results in problems such as large space occupation, complex structure, and high cost. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to improve the existing multi-blocking discharge valve system, which has the problems of large space occupation, complicated installation and high cost.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A compact dual-blocking discharge combination ball valve includes a valve body, the valve body having a first flow channel and a second flow channel; the second flow channel connects to the non-end position of the first flow channel; a first ball valve structure and a second ball valve structure are spaced apart along the path of the first flow channel; a third ball valve structure is provided in the second flow channel; the connection point between the second flow channel and the first flow channel is located between the first ball valve structure and the second ball valve structure.

[0005] Furthermore, the aforementioned first ball valve structure, second ball valve structure, and third ball valve structure all include a valve seat, a ball, a valve stem, an adjusting handle, and a first sealing assembly. The valve seat and the ball are slidably fitted together, the two ends of the valve stem are respectively connected to the ball and the adjusting handle, and the first sealing assembly is disposed between the valve stem and the valve body.

[0006] Furthermore, the valve stem is inverted T-shaped, and the mounting groove of the valve body for mounting the valve stem is adapted to the shape of the valve stem.

[0007] Furthermore, the first sealing assembly includes a first O-ring and a sealing packing, wherein the first O-ring and the sealing packing are spaced around the outer wall of the valve stem.

[0008] Furthermore, a height difference is provided between the adjusting handle of the first ball valve and the adjusting handle of the second ball valve.

[0009] Furthermore, valve covers are provided at both ends of the first flow channel, and a second sealing assembly is provided at the connection between the valve cover and the valve body.

[0010] Furthermore, the second sealing assembly includes a second O-ring and a spiral wound gasket, which are spaced apart at the connection surfaces of the valve cover and the valve body.

[0011] Furthermore, a blind plate is provided at the end of the second flow channel that is away from the first flow channel.

[0012] The beneficial effects of this utility model are: The three ball valves can be controlled independently and can independently cut off the medium. The first and second ball valve structures realize dual blocking functions, realize the redundant configuration of the shut-off valves on the main pipeline, and ensure that the pipeline has no internal leakage and operates safely. The third ball valve structure is a relief valve, which can release pressure and can also be used for medium sampling in the main pipeline. The three ball valves are integrated into one valve body, which is very compact, reduces the overall space occupation of the valve structure, and is easy to operate, thus reducing production and operating costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is the present invention. Figure 1 Schematic diagram of section AA; Figure 3 This is the present invention. Figure 1 Schematic diagram of the BB section; Figure 4 This is a schematic diagram of the first, second, or third ball valve structure of the present invention. Figure 5 This is the present invention. Figure 4 Enlarged view of point A in the middle; Figure 6 This is the present invention. Figure 4 Enlarged view at point B in the middle; The diagram is labeled as follows: 1-valve body, 2-first ball valve structure, 3-second ball valve structure, 4-third ball valve structure, 5-first flow channel, 6-second flow channel, 7-valve cover, 8-blind plate, 9-ball, 10-valve seat, 11-valve stem, 12-adjusting handle, 13-bearing structure, 14-first O-ring seal, 15-sealing packing, 16-packing pressure ring, 17-disc spring, 18-bolt fixing structure, 19-second O-ring seal, 20-wound gasket. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] like Figures 1-3As shown in the embodiment of this application, a compact dual-blocking discharge combined ball valve is proposed, including a valve body 1. The valve body 1 is provided with a first flow channel 5 and a second flow channel 6. The second flow channel 6 connects to the non-end position of the first flow channel 5. A first ball valve structure 2 and a second ball valve structure 3 are arranged at intervals along the path of the first flow channel 5. A third ball valve structure 4 is provided in the second flow channel 6. The connection point between the second flow channel 6 and the first flow channel 5 is located between the first ball valve structure 2 and the second ball valve structure 3. The first ball valve structure 2 and the second ball valve structure 3 are used to control the dual-end blocking function. The third ball valve structure 4 is arranged between the first ball valve structure 2 and the second ball valve structure 3 to facilitate flexible discharge or sampling at both ends or one end.

[0016] First, it should be stated that the three ball valves can be controlled independently and can independently cut off the medium. The first ball valve structure 2 and the second ball valve structure 3 realize the dual blocking function, realize the redundant configuration of the shut-off valves on the main pipeline, and ensure that the pipeline has no internal leakage and operates safely. The third ball valve structure 4 is a relief valve, which can release pressure and can also be used for sampling the medium in the main pipeline. The three ball valves are integrated into a valve body 1, which makes the structure very compact, reduces the overall space occupied by the valve structure, and is easy to operate, thus reducing production and operating costs.

[0017] The valve body 1 is configured as a T-shaped structure. The first ball valve structure 2, the second ball valve structure 3, and the third ball valve structure 4 are respectively located at the three ends of the T-shape. The first ball valve structure 2 and the second ball valve structure 3 are provided with valve covers 7 on the side away from the valve body 1. The valve covers 7 are fixed to the valve body 1 by flange and bolt structure, so that the first ball valve structure 2 and the second ball valve structure 3 are stably set in the valve body 1, improving stability.

[0018] A blind plate 8 is provided at the end of the second flow channel 6 away from the first flow channel 5. That is, a blind plate 8 is provided on the side of the third ball valve structure 4 away from the valve body 1. The blind plate 8 is sealed to the valve body 1 through a flange and bolt structure to ensure that no leakage occurs when the first flow channel 5 is conveying materials. When the second flow channel 6 needs to discharge or sample, the blind plate 8 is removed for discharge or sampling.

[0019] Both ends of the first flow channel 5 are provided with valve covers 7. A second sealing component is provided at the connection between the valve cover 7 and the valve body 1. The valve covers 7 at both ends facilitate the installation, disassembly and maintenance of the first ball valve structure 2 and the second ball valve structure 3.

[0020] Specifically, such as Figure 4As shown, the first ball valve structure 2, the second ball valve structure 3, and the third ball valve structure 4 all include a valve seat 10, a ball 9, a valve stem 11, an adjusting handle 12, and a first sealing assembly. The valve seat 10 and the ball 9 are slidably fitted together. The two ends of the valve stem 11 are respectively connected to the ball 9 and the adjusting handle 12. The first sealing assembly is disposed between the valve stem 11 and the valve body 1. Specifically, the valve stem 11 is inverted T-shaped, and the mounting groove of the valve body 1 for mounting the valve stem 11 is adapted to the shape of the valve stem 11, which can ensure that the valve stem 11 will not float upward or shift in the vertical direction, thus ensuring the stability and sealing of the ball valve. Moreover, the first sealing assembly includes a first O-ring seal 14 and a sealing packing 15, which are spaced around the outer wall of the valve stem 11. A bearing structure 13 is also provided between the valve body 1 and the valve stem 11 to ensure smooth operation and stability.

[0021] like Figure 5 As shown, regarding the alternating arrangement of the first O-ring seal 14 and the sealing packing 15, specifically, the first O-ring seal 14 and the sealing packing 15 are sequentially and alternately sleeved on the outer wall of the valve stem 11 from bottom to top. The upper end of the sealing packing 15 is sequentially provided with a packing pressure ring 16, a disc spring 17, and a bolt fixing structure 18. By tightening the bolt fixing mechanism, the sealing packing 15 is pressed between the outer wall of the valve stem 11 and the valve body 1, ensuring a good sealing effect.

[0022] To further facilitate operation and avoid interference between the first ball valve structure 2 and the second ball valve structure 3 during operation, a height difference is provided between the adjusting handle 12 of the first ball valve structure 2 and the adjusting handle 12 of the second ball valve.

[0023] like Figure 6 As shown, the second sealing assembly includes a second O-ring 19 and a spiral wound gasket 20. The second O-ring 19 and the spiral wound gasket 20 are spaced apart at the connection surface between the valve cover 7 and the valve body 1 to improve the sealing performance of the flow channel blockage. For the third ball valve structure 4, a vent body is provided on the side of the third ball valve structure 4 away from the valve body 1, and the blind plate 8 is installed at the end of the vent body away from the third ball valve structure 4.

[0024] In summary, this utility model proposes a compact dual-blocking discharge combined ball valve, which integrates three ball valves into one valve body 1 to achieve dual blocking and discharge functions. It has the advantages of compact structure, reliable sealing, convenient operation, and high safety.

Claims

1. A compact dual-blocking discharge combination ball valve, characterized in that, The valve includes a valve body (1), which has a first flow channel (5) and a second flow channel (6); the second flow channel (6) connects to the non-end position of the first flow channel (5); a first ball valve structure (2) and a second ball valve structure (3) are spaced apart on the path of the first flow channel (5); a third ball valve structure (4) is provided on the second flow channel (6); the connection point between the second flow channel (6) and the first flow channel (5) is located between the first ball valve structure (2) and the second ball valve structure (3).

2. The compact dual-blocking discharge combination ball valve according to claim 1, characterized in that, The first ball valve structure (2), the second ball valve structure (3) and the third ball valve structure (4) all include a valve seat (10), a ball (9), a valve stem (11), an adjusting handle (12) and a first sealing assembly. The valve seat (10) and the ball (9) are slidably fitted together. The two ends of the valve stem (11) are respectively connected to the ball (9) and the adjusting handle (12). The first sealing assembly is disposed between the valve stem (11) and the valve body (1).

3. The compact dual-blocking discharge combination ball valve according to claim 2, characterized in that, The valve stem (11) is inverted T-shaped, and the mounting groove of the valve body (1) for mounting the valve stem (11) is adapted to the shape of the valve stem (11).

4. The compact dual-blocking discharge combination ball valve according to claim 3, characterized in that, The first sealing assembly includes a first O-ring (14) and a sealing packing (15), which are spaced around the outer wall of the valve stem (11).

5. The compact dual-blocking discharge combination ball valve according to claim 2, characterized in that, A height difference is provided between the adjusting handle (12) of the first ball valve and the adjusting handle (12) of the second ball valve.

6. The compact dual-blocking discharge combination ball valve according to claim 1, characterized in that, A valve cover (7) is provided at both ends of the first flow channel (5), and a second sealing component is provided at the connection between the valve cover (7) and the valve body (1).

7. The compact dual-blocking discharge combination ball valve according to claim 1, characterized in that, The second sealing assembly includes a second O-ring (19) and a spiral wound gasket (20), which are spaced apart at the connection surfaces of the valve cover (7) and the valve body (1).

8. The compact dual-blocking discharge combination ball valve according to claim 1, characterized in that, A blind plate (8) is provided at the end of the second flow channel (6) away from the first flow channel (5).

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