Rotatable valve

Abstract

The rotatable valve comprises a main valve body, one end of the main valve body is connected with a first adjusting valve body, the other end of the main valve body is connected with a second adjusting valve body, the first adjusting valve body and the second adjusting valve body are symmetrically arranged relative to the main valve body, and the first adjusting valve body comprises a first fixed base and a first adjusting base; the first adjusting valve body comprises a first fixing base and a first adjusting base, the first fixing base and the first adjusting base are fixed through a first puller screw, the second adjusting valve body comprises a second fixing base and a second adjusting base, and the second fixing base and the second adjusting base are fixed through a second puller screw. According to the technical scheme, the positions of the connecting ends of the first adjusting valve body and the second adjusting valve body are correspondingly adjusted according to the actual installation environment, when the positions of the two sets of pipelines are staggered, the positions of the connecting ends of the first adjusting valve body and the second adjusting valve body can be adjusted to be matched with the pipeline connecting ends, connection between the valve and the pipelines is achieved, and the valve is suitable for various installation environments.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and particularly relates to a rotatable valve. Background Art

[0002] A valve is a device used to control media such as gases, liquids, and gases or liquids containing solid powders in various pipelines and equipment. A valve usually consists of a valve body, a valve cover, a valve seat, a closing member, a driving mechanism, seals, and fasteners, etc. The control function of a valve is achieved by relying on a driving mechanism or fluid to drive the closing member to lift, slide, swing, or rotate to change the size of the flow passage area. Valves are also classified into cast iron valves, cast steel valves, stainless steel valves, chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, duplex steel valves, plastic valves, non-standard customized valves, etc. according to the material. According to the driving method, there are manual valves, electric valves, pneumatic valves, hydraulic valves, etc. According to the pressure, they can be divided into vacuum valves, low-pressure valves, medium-pressure valves, high-pressure valves, and ultra-high-pressure valves. Valves are widely used in industries such as industry, construction, agriculture, chemical industry, petroleum, natural gas, water treatment, etc., and are indispensable control components in fluid transportation systems.

[0003] Most of the existing valves are of fixed structures, and the positions of the valve connection ends cannot be adjusted. Therefore, when assembling a valve, the relative positions of two groups of pipelines to be connected need to be adapted to the positions of the valve connection ends. When the two groups of pipelines are fixed and the angular positions of the pipeline connection ends are different, the conventional valve structure cannot achieve the connection between the pipelines, and the flexibility during use is relatively low. Summary of the Invention

[0004] Technical problems to be solved: Aiming at the deficiencies of the prior art, the present invention provides a rotatable valve, which can correspondingly adjust the positions of the connection ends of the first adjusting valve body and the second adjusting valve body according to the actual installation environment. When the positions of two groups of pipelines are misaligned, the positions of the connection ends of the first adjusting valve body and the second adjusting valve body can be adjusted to adapt to the pipeline connection ends, realizing the connection between the valve and the pipelines, adapting to various installation environments, and solving the technical problems mentioned in the background art.

[0005] Technical solutions: To achieve the above object, the present invention is realized through the following technical solutions: A rotatable valve, comprising a main valve body, one end of the main valve body is connected to a first adjusting valve body, the other end of the main valve body is connected to a second adjusting valve body. The main valve body is used to open and close the passage. The first adjusting valve body is used to connect one end of the pipeline, and the second adjusting valve body is used to connect the other end of the pipeline. The first adjusting valve body and the second adjusting valve body are symmetrically arranged with respect to the main valve body. The first adjusting valve body includes a first fixed base and a first adjusting base. The first fixed base and the first adjusting base are fixed by a first tightening screw. When the first tightening screw is loosened and a certain external force is applied to the first adjusting base, the angle of the first adjusting base relative to the first fixed base can be flexibly adjusted. The second adjusting valve body includes a second fixed base and a second adjusting base. The second fixed base and the second adjusting base are fixed by a second tightening screw. When the second tightening screw is loosened and a certain external force is applied to the second adjusting base, the angle of the second adjusting base relative to the second fixed base can be flexibly adjusted. The first fixed base and the second fixed base both include a first connecting seat and a first straight pipe. The first adjusting base and the second adjusting base both include a second connecting seat and a second straight pipe. The first connecting seat is an arc-shaped structure, and the second connecting seat is an arc-shaped structure. The second connecting seat is rotatably embedded in the first connecting seat. The outer arc surface of the second connecting seat is in close contact with the inner arc surface of the first connecting seat, and they are engaged with each other. At the same time, the second connecting seat can deflect relative to the first connecting seat within a certain range.

[0006] In a possible implementation manner, the second connecting seat of the first adjusting base is rotatably embedded in the first connecting seat of the first fixed base. There are two groups of the first tightening screws, and the two groups of the first tightening screws are respectively located on both sides of the first fixed base. When the two groups of the first tightening screws are loosened, the fastening force between the first fixed base and the first adjusting base is released. At this time, when a certain external force is applied to the first adjusting base, the deflection angle position of the first adjusting base can be adjusted.

[0007] In a possible implementation manner, the second connecting seat of the second adjusting base is rotatably embedded in the first connecting seat of the second fixed base. There are two groups of the second tightening screws, and the two groups of the second tightening screws are respectively located on both sides of the second fixed base. When the two groups of the second tightening screws are loosened, the fastening force between the second fixed base and the second adjusting base is released. At this time, when a certain external force is applied to the second adjusting base, the deflection angle position of the second adjusting base can be adjusted.

[0008] In a possible implementation, screw holes are provided on both sides of the first fixed base, and the first tightening screw is threadedly connected to the first fixed base. Screw holes are provided on both sides of the second fixed base, and the second tightening screw is threadedly connected to the second fixed base. When using a tool to rotate the first tightening screw, the first tightening screw can tighten and fix or loosen the first adjusting base. When using a tool to rotate the second tightening screw, the second tightening screw can tighten and fix or loosen the second adjusting base.

[0009] In a possible implementation, a first sealing ring is provided at the connection between the first fixed base and the first adjusting base, and the first sealing ring is fixed on the first fixed base. A first sealing ring is provided at the connection between the second fixed base and the second adjusting base, and the first sealing ring is fixed on the second fixed base. The first sealing ring of the first adjusting valve body seals the connection between the first fixed base and the first adjusting base, and the first sealing ring of the second adjusting valve body seals the connection between the second fixed base and the second adjusting base, effectively preventing medium leakage.

[0010] In a possible implementation, a valve stem is provided on the main valve body. One end of the valve stem is connected to the valve core, and the other end of the valve stem is connected to a transmission mechanism. The transmission mechanism is connected to a handwheel. The valve core is located inside the main valve body. Manually rotating the handwheel drives the valve stem to rotate through the transmission mechanism, and the valve stem drives the valve core to rotate synchronously to achieve opening and closing and flow regulation.

[0011] In a possible implementation, connection columns are provided at both ends of the main valve body. External threads are provided on the outer surface of the connection columns. Internal threads are provided on the inner side surface of the first straight pipe of the first fixed base. Internal threads are provided on the inner side surface of the first straight pipe of the second fixed base. The main valve body is threadedly connected to the first fixed base, and the position of the first fixed base on the connection column can be adjusted.

[0012] In a possible implementation, the connection column at one end of the main valve body extends into the first straight pipe of the first fixed base and is threadedly connected to the first straight pipe of the first fixed base. The connection column at the other end of the main valve body extends into the first straight pipe of the second fixed base and is threadedly connected to the first straight pipe of the second fixed base. The main valve body is threadedly connected to the second fixed base, and the position of the second fixed base on the connection column can be adjusted. By adjusting the positions of the first adjusting valve body and the second adjusting valve body on the connection column, the total length of the valve can be adjusted.

[0013] In a possible implementation, a second sealing ring is provided between the connection column and the first straight pipe. The second sealing ring seals the threaded connection, effectively preventing medium leakage.

[0014] In a possible implementation, the second straight pipe of the first adjustment base is connected to a flange plate, and the second straight pipe of the second adjustment base is connected to a flange plate. The first adjustment valve body is connected to a pipeline through the flange plate at its connection, and the second adjustment valve body is connected to a pipeline through the flange plate at its connection.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The first adjustment valve body and the second adjustment valve body of the present invention are used as the connection ends of the valve, and the connection end positions of the first adjustment valve body and the second adjustment valve body can be adjusted at multiple angles. According to the actual installation environment, the positions of the connection ends of the first adjustment valve body and the second adjustment valve body are adjusted accordingly. When the positions of the two groups of pipelines are misaligned, the positions of the connection ends of the first adjustment valve body and the second adjustment valve body can be adjusted to fit the pipeline connection ends, realizing the connection between the valve and the pipeline, adapting to various installation environments, and improving the flexibility during use.

[0016] 2. By rotating the first adjustment valve body and the second adjustment valve body at both ends, the positions of the first adjustment valve body and the second adjustment valve body on the connection column are adjusted, thereby realizing the adjustment of the total length of the valve, further improving the flexibility of the valve during use, and being applicable to various installation environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it according to the content of the description, the following takes the preferred embodiments of the present invention and combines with the drawings to describe in detail as follows.

[0018] Figure 1 It is a schematic diagram of the overall structure of a side view of the present invention; Figure 2 It is a schematic diagram of the overall structure of the other side view of the present invention; Figure 3 For Figure 1 The partial enlarged view of area A in Figure 4 It is a cross-sectional view of the present invention; Figure 5 For Figure 4 The partial enlarged view of area B in Figure 6 It is a schematic diagram of the structure of the main valve body of the present invention; Figure 7 It is an assembly schematic diagram of the first fixed base and the first adjustment base of the present invention; Figure 8 It is an adjustment schematic diagram of the first adjustment valve body of the present invention; Figure 9 It is a cross-sectional view of the first adjustment valve body of the present invention in a rotating state; Figure 10This is a split view of the first fixed base and the first adjustment base of the present invention.

[0019] In the figure: 1, main valve body; 2, first adjustment valve body; 3, second adjustment valve body; 4, first sealing ring; 5, second sealing ring; 11, valve stem; 12, transmission mechanism; 13, handwheel; 14, valve core; 15, connecting column; 16, external thread; 21, first fixed base; 22, first adjustment base; 23, first tightening screw; 31, second fixed base; 32, second adjustment base; 33, second tightening screw; 211, first connecting seat; 212, first straight pipe; 213, internal thread; 221, second connecting seat; 222, second straight pipe; 223, flange plate. Detailed implementation manners

[0020] In an embodiment of the present application, a rotatable valve is provided, which can adjust the position of the connection end of the first adjustment valve body and the second adjustment valve body according to the actual installation environment. When the positions of the two groups of pipelines are misaligned, the connection end of the first adjustment valve body and the second adjustment valve body can be adjusted to fit the pipeline connection end, realizing the connection between the valve and the pipeline, adapting to various installation environments, and solving the technical problems mentioned in the background art.

[0021] The technical solution in the embodiment of the present application is to solve the problems in the above background art, and the general idea is as follows: Embodiment 1: Please refer to Figure 1-10 , the present invention provides a technical solution: a rotatable valve, including a main valve body 1, one end of the main valve body 1 is connected to a first adjustment valve body 2, the other end of the main valve body 1 is connected to a second adjustment valve body 3, and the first adjustment valve body 2 and the second adjustment valve body 3 are symmetrically arranged with respect to the main valve body 1. The first adjustment valve body 2 includes a first fixed base 21 and a first adjustment base 22, and the first fixed base 21 and the first adjustment base 22 are fixed by a first tightening screw 23. The second adjustment valve body 3 includes a second fixed base 31 and a second adjustment base 32, and the second fixed base 31 and the second adjustment base 32 are fixed by a second tightening screw 33. The first fixed base 21 and the second fixed base 31 both include a first connecting seat 211 and a first straight pipe 212, and the first adjustment base 22 and the second adjustment base 32 both include a second connecting seat 221 and a second straight pipe 222. As Figure 4 shown, the main valve body 1, the first adjustment valve body 2, and the second adjustment valve body 3 all include a flow channel, and the flow channel of the main valve body 1, the flow channel of the first adjustment valve body 2, and the flow channel of the second adjustment valve body 3 are connected.

[0022] The main valve body 1 is used to open and close the passage. The first regulating valve body 2 is used to connect one end of the pipeline, and the second regulating valve body 3 is used to connect the other end of the pipeline. Moreover, the connection end positions of the first regulating valve body 2 and the second regulating valve body 3 can both be adjusted. When the first tightening screw 23 is loosened and a certain external force is applied to the first adjusting base 22, the angle of the first adjusting base 22 relative to the first fixed base 21 can be flexibly adjusted. When the second tightening screw 33 is loosened and a certain external force is applied to the second adjusting base 32, the angle of the second adjusting base 32 relative to the second fixed base 31 can be flexibly adjusted.

[0023] Loosen the first tightening screw 23. At this time, the first adjusting base 22 can deflect at multiple angles relative to the first fixed base 21, and then the position of the connection end of the first regulating valve body 2 can be adjusted at multiple angles. After the adjustment is completed, tighten the first tightening screw 23 to re-fasten it. Loosen the second tightening screw 33. At this time, the second adjusting base 32 can deflect at multiple angles relative to the second fixed base 31, and then the position of the connection end of the second regulating valve body 3 can be adjusted at multiple angles. After the adjustment is completed, tighten the second tightening screw 33 to fasten it. Adjust the positions of the connection ends of the first regulating valve body 2 and the second regulating valve body 3 according to the actual installation environment. When the positions of the two groups of pipelines are misaligned, the connection between the pipelines can be achieved by adjusting the positions of the connection ends of the first regulating valve body 2 and the second regulating valve body 3, adapting to various installation environments and improving the flexibility during use.

[0024] In some examples, the second connecting seat 221 of the first adjusting base 22 is rotationally embedded in the first connecting seat 211 of the first fixed base 21. There are two groups of first tightening screws 23, and the two groups of first tightening screws 23 are respectively located on both sides of the first fixed base 21.

[0025] When the two groups of first tightening screws 23 are loosened, the fastening force between the first fixed base 21 and the first adjusting base 22 is released. At this time, when a certain external force is applied to the first adjusting base 22, the deflection angle position of the first adjusting base 22 can be adjusted, that is, the angle position of the connection end of the first regulating valve body 2 can be adjusted. After the adjustment is completed, tighten the two groups of first tightening screws 23 to fasten them.

[0026] In some examples, the second connecting seat 221 of the second adjusting base 32 is rotationally embedded in the first connecting seat 211 of the second fixed base 31. There are two groups of second tightening screws 33, and the two groups of second tightening screws 33 are respectively located on both sides of the second fixed base 31.

[0027] When loosening the two sets of second tightening screws 33, the fastening force between the second fixed base 31 and the second adjusting base 32 is released. At this time, when applying a certain external force to the second adjusting base 32, the deflection angle position of the second adjusting base 32 can be adjusted, that is, the angle position of the connecting end of the second adjusting valve body 3 can be adjusted. After the adjustment is completed, tighten the two sets of second tightening screws 33. After installing and fixing the valve, rely on the locking force between the valve and the pipeline and the locking force of each tightening screw to ensure the stability of the valve.

[0028] In some examples, screw holes are provided on both sides of the first fixed base 21. The first tightening screw 23 is threadedly connected to the first fixed base 21. Screw holes are provided on both sides of the second fixed base 31. The second tightening screw 33 is threadedly connected to the second fixed base 31. When using a tool to rotate the first tightening screw 23, the first tightening screw 23 can achieve the tightening and fixing or loosening of the first adjusting base 22. When using a tool to rotate the second tightening screw 33, the second tightening screw 33 can achieve the tightening and fixing or loosening of the second adjusting base 32.

[0029] In some examples, a first sealing ring 4 is provided at the connection between the first fixed base 21 and the first adjusting base 22, and the first sealing ring 4 is fixed on the first fixed base 21. A first sealing ring 4 is provided at the connection between the second fixed base 31 and the second adjusting base 32, and the first sealing ring 4 is fixed on the second fixed base 31.

[0030] The first connecting seat 211 is of an arc structure, the second connecting seat 221 is of an arc structure. The second connecting seat 221 is rotationally embedded in the first connecting seat 211. The outer arc surface of the second connecting seat 221 is in close contact with the inner arc surface of the first connecting seat 211, and they are engaged with each other. At the same time, the second connecting seat 221 can deflect within a certain range relative to the first connecting seat 211. During the process of the second connecting seat 221 deflecting relative to the first connecting seat 211, the first sealing ring 4 of the first adjusting valve body 2 is always located at the connection between the first fixed base 21 and the first adjusting base 22, realizing the sealing at the connection between the first fixed base 21 and the first adjusting base 22. The first sealing ring 4 of the second adjusting valve body 3 is always located at the connection between the second fixed base 31 and the second adjusting base 32, realizing the sealing at the connection between the second fixed base 31 and the second adjusting base 32, effectively preventing medium leakage.

[0031] In some examples, a valve stem 11 is provided on the main valve body 1. One end of the valve stem 11 is connected to the valve core 14, and the other end of the valve stem 11 is connected to the transmission mechanism 12. The transmission mechanism 12 is connected to the handwheel 13. The valve core 14 is located inside the main valve body 1 and placed in the flow channel of the main valve body 1. Manually rotate the handwheel 13, and through the transmission of the transmission mechanism 12, the valve stem 11 is driven to rotate. The valve stem 11 drives the valve core 14 to rotate synchronously. By rotating the valve stem 11 to drive the valve core 14 to rotate, the opening and closing and flow regulation are achieved.

[0032] By adopting the above technical solution: The first regulating valve body 2 and the second regulating valve body 3 are used as the connection ends of the valve, and the connection end positions of the first regulating valve body 2 and the second regulating valve body 3 can be adjusted at multiple angles. According to the actual installation environment, the connection end positions of the first regulating valve body 2 and the second regulating valve body 3 are adjusted accordingly. When the positions of the two groups of pipelines are misaligned, the connection end positions of the first regulating valve body 2 and the second regulating valve body 3 can be adjusted to adapt to the pipeline connection end, realizing the connection between the valve and the pipeline, adapting to various installation environments, and improving the flexibility during use.

[0033] Embodiment 2: Based on Embodiment 1, this embodiment introduces the specific structures of the main valve body 1, the first fixed base 21, and the second fixed base 31 in a rotatable valve. Connection columns 15 are provided at both ends of the main valve body 1. The connection columns 15 at both ends are symmetrically arranged with respect to the main valve body 1. External threads 16 are provided on the outer surface of the connection columns 15. Internal threads 213 are provided on the inner side surface of the first straight pipe 212 of the first fixed base 21, and internal threads 213 are provided on the inner side surface of the first straight pipe 212 of the second fixed base 31.

[0034] The main valve body 1 is threadedly connected to the first fixed base 21. By applying a certain external force to the first fixed base 21, the first fixed base 21 can be driven to rotate relative to the main valve body 1, thereby adjusting the position of the first fixed base 21 on the connection column 15, that is, adjusting the position of the first regulating valve body 2 on the connection column 15.

[0035] In some examples, the connection column 15 at one end of the main valve body 1 extends into the first straight pipe 212 of the first fixed base 21 and is threadedly connected to the first straight pipe 212 of the first fixed base 21. The connection column 15 at the other end of the main valve body 1 extends into the first straight pipe 212 of the second fixed base 31 and is threadedly connected to the first straight pipe 212 of the second fixed base 31.

[0036] The main valve body 1 is threadedly connected to the second fixed base 31. By applying a certain external force to the second fixed base 31, the second fixed base 31 can be driven to rotate relative to the main valve body 1, thereby adjusting the position of the second fixed base 31 on the connecting column 15, that is, adjusting the position of the second regulating valve body 3 on the connecting column 15.

[0037] In some examples, a second sealing ring 5 is provided between the connecting column 15 and the first straight pipe 212. A second sealing ring 5 is provided between the connecting column 15 at one end of the main valve body 1 and the first straight pipe 212 of the first fixed base 21, and a second sealing ring 5 is also provided between the connecting column 15 at the other end of the main valve body 1 and the first straight pipe 212 of the second fixed base 31. The threaded connection is sealed by the second sealing ring 5 to effectively prevent the leakage of the medium. As Figure 5 shown, the second sealing ring 5 is fixedly arranged on the connecting column 15 to always seal the connection between the first straight pipe 212 and the connecting column 15.

[0038] In some examples, the second straight pipe 222 of the first regulating base 22 is connected to the flange 223, and the second straight pipe 222 of the second regulating base 32 is connected to the flange 223. Flange holes are provided on the flange 223. The first regulating valve body 2 is connected to the pipeline through the flange 223 at its connection, and the second regulating valve body 3 is connected to the pipeline through the flange 223 at its connection. The overall valve is connected to the pipeline through the flange 223.

[0039] By adopting the above technical solutions: By rotating the first regulating valve body 2 and the second regulating valve body 3 at both ends, the positions of the first regulating valve body 2 and the second regulating valve body 3 on the connecting column 15 are adjusted, thereby further realizing the adjustment of the total length of the valve, further improving the flexibility of the valve during use, and being applicable to various installation environments.

[0040] Finally, it should be noted that: Obviously, the above embodiments are merely examples for clearly illustrating the present invention and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom still fall within the protection scope of the present invention.

Claims

1. A rotatable valve, comprising a main valve body (1), characterized in that: One end of the main valve body (1) is connected to the first regulating valve body (2), and the other end of the main valve body (1) is connected to the second regulating valve body (3). The first regulating valve body (2) and the second regulating valve body (3) are symmetrically arranged with respect to the main valve body (1). The first regulating valve body (2) includes a first fixed base (21) and a first regulating base (22), and the first fixed base (21) and the first regulating base (22) are fixed by a first tightening screw (23). The second regulating valve body (3) includes a second fixed base (31) and a second regulating base (32), and the second fixed base (31) and the second regulating base (32) are fixed by a second tightening screw (33). Both the first fixed base (21) and the second fixed base (31) include a first connecting seat (211) and a first straight pipe (212), and both the first regulating base (22) and the second regulating base (32) include a second connecting seat (221) and a second straight pipe (222).

2. The rotatable valve according to claim 1, characterized in that: The second connecting seat (221) of the first regulating base (22) is rotatably embedded in the first connecting seat (211) of the first fixed base (21). There are two groups of the first tightening screws (23), and the two groups of the first tightening screws (23) are respectively located on both sides of the first fixed base (21).

3. The rotatable valve according to claim 2, characterized in that: The second connecting seat (221) of the second regulating base (32) is rotatably embedded in the first connecting seat (211) of the second fixed base (31). There are two groups of the second tightening screws (33), and the two groups of the second tightening screws (33) are respectively located on both sides of the second fixed base (31).

4. The rotatable valve according to claim 3, characterized in that: Screw holes are formed on both sides of the first fixed base (21), and the first tightening screw (23) is threadedly connected to the first fixed base (21). Screw holes are formed on both sides of the second fixed base (31), and the second tightening screw (33) is threadedly connected to the second fixed base (31).

5. The rotatable valve according to claim 1, wherein: A first sealing ring (4) is arranged at the connection between the first fixed base (21) and the first regulating base (22), and the first sealing ring (4) is fixed on the first fixed base (21). A first sealing ring (4) is arranged at the connection between the second fixed base (31) and the second regulating base (32), and the first sealing ring (4) is fixed on the second fixed base (31).

6. The rotatable valve according to claim 1, wherein: A valve rod (11) is arranged on the main valve body (1). One end of the valve rod (11) is connected to a valve core (14), the other end of the valve rod (11) is connected to a transmission mechanism (12), the transmission mechanism (12) is connected to a handwheel (13), and the valve core (14) is located inside the main valve body (1).

7. The rotatable valve according to claim 1, wherein: Connection columns (15) are arranged at both ends of the main valve body (1). External threads (16) are arranged on the outer surface of the connection columns (15). Internal threads (213) are arranged on the inner side surface of the first straight pipe (212) of the first fixed base (21). Internal threads (213) are arranged on the inner side surface of the first straight pipe (212) of the second fixed base (31).

8. The rotatable valve according to claim 7, wherein: The connecting column (15) at one end of the main valve body (1) extends into the first straight pipe (212) of the first fixed base (21) and is threadedly connected to the first straight pipe (212) of the first fixed base (21). The connecting column (15) at the other end of the main valve body (1) extends into the first straight pipe (212) of the second fixed base (31) and is threadedly connected to the first straight pipe (212) of the second fixed base (31).

9. A rotatable valve according to claim 8, characterized in that: A second sealing ring (5) is provided between the connecting column (15) and the first straight pipe (212).

10. The rotatable valve according to claim 9, wherein: The second straight pipe (222) of the first adjusting base (22) is connected to the flange (223), and the second straight pipe (222) of the second adjusting base (32) is connected to the flange (223).

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