Linkage combination valve

Abstract

The invention discloses a linkage combination valve, and belongs to the technical field of combination valves.The linkage combination valve comprises a valve body base, control valve body mechanisms are fixedly connected to the two sides of the top of the valve body base correspondingly, and threaded backing rings are spirally connected to the interiors of the two control valve body mechanisms correspondingly; the centers of the tops of the two control valve body mechanisms are both slidably connected with driving rod mechanisms, the tops of the two control valve body mechanisms are both provided with pressure reduction adjusting mechanisms, and the bottom of one control valve body mechanism is fixedly connected with a detachable bottom cover. A support adjusting mechanism is arranged between the valve body base and the two control valve body mechanisms. The support adjusting mechanism and the communicating assembly are designed, when leakage occurs at the position of the output pipeline, the air pressure of the tail end of the valve is reduced, the tail end driving rod mechanism ascends, the valve opening is reduced, meanwhile, the support adjusting mechanism drives the driving rod mechanism at the head end to descend, and the situation of excessive gas leakage is avoided.

Description

Technical Field

[0001] This invention belongs to the field of combined valve technology, and specifically relates to a linkage combined valve. Background Technology

[0002] Combination valves are valve devices that combine two or more valves to form a multi-functional unit. They enable coordinated operation of multiple valves, simplifying pipeline system design and installation, and improving system reliability and operational efficiency. Common types include: pneumatic-hydraulic combination valves, commonly used in natural gas pipelines, consisting of a pneumatic-hydraulic actuator and valves; water-gas combination valves, commonly found in gas water heaters, combining water and gas valves; electric-pneumatic combination valves, combining the advantages of electric and pneumatic valves, suitable for applications requiring high control precision and response speed; and overflow-check combination valves, integrating the functions of overflow and check valves, generally used in hydraulic systems. The advantages of combination valves include functional integration, space saving, ease of operation, and cost reduction.

[0003] The mechanical valves in existing combination valves have certain hidden dangers during use. For example, if a leak occurs during gas transmission, the mechanical combination valve cannot automatically close or reduce the valve opening, which can easily lead to large-scale leakage and serious losses. At the same time, due to the lack of electronic components for sensing and information transmission, mechanical combination valves are difficult to link together after combination, which means that the two valve bodies can only work independently, resulting in a single working mode. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a linkage combination valve.

[0005] The technical solution adopted to solve the above technical problems is: to provide a linkage combination valve, including a valve body base, wherein control valve body mechanisms are fixedly connected to both sides of the top of the valve body base, and threaded gaskets are spirally connected inside the two control valve body mechanisms. A drive rod mechanism is slidably connected to the top center of each of the two control valve body mechanisms, a pressure reducing adjustment mechanism is installed on the top of each of the two control valve body mechanisms, and a detachable bottom cover is fixedly connected to the bottom of one of the control valve body mechanisms. A bracket adjustment mechanism is provided between the valve body base and the two control valve body mechanisms. A manual valve mechanism is fixedly connected between the two control valve body mechanisms. A communication component is installed between one side and the top of each of the two control valve body mechanisms.

[0006] Furthermore, the control valve body mechanism includes a valve cavity housing fixedly connected to the top of the valve body base. A sealing inner shell is placed on the top of the valve body base. The inner wall of the sealing inner shell is filled with multiple sealing gaskets. A threaded sleeve is installed on the top of the sealing inner shell. Multiple fixing studs are fixedly connected to the top of the valve cavity housing. Connecting gaskets are provided between the multiple fixing studs. Locking nuts are screwed onto the top of the connecting gaskets of the multiple fixing studs. An internal threaded base is screwed onto the outer wall of the threaded sleeve. Two adjusting springs are provided on the top of the internal threaded base. Connecting pipes are fixedly connected to both sides of the valve cavity housing. A threaded ring is fixedly connected to the center of the inner wall of the valve cavity housing.

[0007] With the above technical solution, the gas enters the valve chamber housing through the connecting pipe on one side and is output from the connecting pipe at the other end. The sealing of the drive rod mechanism can be achieved by the sealing inner shell and multiple sealing gaskets, so that there will be no air leakage when the drive rod mechanism slides. By rotating the internal thread base, the elastic force of the adjusting spring on the drive rod mechanism can be controlled, thereby changing the critical value of gas delivery.

[0008] Furthermore, the two threaded washers are respectively helically connected to the threaded ring, and the two threaded washers are installed in opposite directions.

[0009] The above technical solution ensures that during gas delivery, the two drive rod mechanisms can rise and fall respectively, thus enabling them to work together.

[0010] Furthermore, the drive rod mechanism includes an adjusting valve rod that is slidably connected between the control valve body mechanism and the pressure reducing adjustment mechanism. A supporting circular plate is fixedly connected to the outer wall of the adjusting valve rod, a sealing valve core is fixedly connected to the bottom of the adjusting valve rod, a connecting shaft frame is fixedly connected to one side of the supporting circular plate, and a diaphragm connecting plate is fixedly connected to the top of the adjusting valve rod.

[0011] Through the above technical solution, power transmission is achieved by adjusting the valve stem, the support circular plate and two adjusting springs are fixedly connected to transmit the elastic force of the adjusting springs, the valve core and the threaded gasket can seal and close the valve, the connecting shaft bracket can rotate to connect the bracket adjustment mechanism, and then the bracket adjustment mechanism can link the two drive rod mechanisms.

[0012] Furthermore, the pressure reduction adjustment mechanism includes two threaded rods that are helically connected to both sides of the connecting gasket. A mounting plate is fixedly connected between the tops of the two threaded rods. A lower mold cover is fixedly connected to the top of the mounting plate. An upper mold cover is placed on the top of the lower mold cover. A diaphragm body is disposed between the lower mold cover and the upper mold cover. Multiple bolt assemblies are installed between the lower mold cover, the diaphragm body, and the upper mold cover.

[0013] Through the above technical solution, during the gas transmission process, the output gas can be connected between the upper mold cover and the diaphragm body through two connecting components. In the control valve body mechanism at the first end, when the output gas pressure is high, it will push the diaphragm body and then push the overall drive rod mechanism to descend, thereby reducing the opening of the threaded gasket and the sealing valve core, and thus reducing the gas flow. When the output pipeline leaks, the leaked low pressure can be transmitted to the upper mold cover and the diaphragm body at the tail end, thereby reducing the pressure and allowing the diaphragm body to rise and reset, driving the overall drive rod mechanism to rise, thereby reducing the valve opening.

[0014] Furthermore, the bracket adjustment mechanism includes two rotating support frames fixedly connected to the top of the valve body base. An integral bushing is fixedly connected to the top center of each of the two rotating support frames. A rotating shaft is fixedly connected between the two integral bushings. Limiting plates are fixedly connected to both sides of the center of the outer wall of the rotating shaft. A rotating shell is rotatably connected to the center of the outer wall of the rotating shaft. Telescopic plates are slidably connected to the interior of both sides of the rotating shell.

[0015] Through the above technical solution, during normal gas transmission, the gas passing through the two control valve body mechanisms causes the two drive rod mechanisms to rise and fall. Then, the support adjustment mechanism links the drive rod mechanisms on both sides to achieve the linkage of the opening. In the event of a leak, the gas pressure at the tail end decreases, causing the drive rod mechanism to rise. This, in turn, can drive the drive rod mechanism at the head end to fall through the two telescopic plates and the rotating shell, thereby reducing the gas output and preventing excessive gas leakage.

[0016] Furthermore, one end of each of the two telescopic plates is provided with a shaft hole corresponding to the connecting shaft bracket.

[0017] The above technical solution ensures that the bracket adjustment mechanism can be rotatably connected to the two drive rod mechanisms through the two telescopic plates.

[0018] Furthermore, the manual valve mechanism includes a valve body, a limiting housing is fixedly connected to the top of the valve body, a cover plate nut assembly is fixedly connected to the top of the limiting housing, a manual adjustment screw is screwed to the center of the top of the cover plate nut assembly, a connecting housing is rotatably connected to the bottom of the manual adjustment screw, and a valve plate is fixedly connected to the bottom of the connecting housing.

[0019] With the above technical solution, after a leak occurs, the gas leakage can be reduced by the linkage combination valve. After manual arrival, the manual adjustment screw is turned to push the valve plate down and achieve a seal inside the valve body.

[0020] Furthermore, the communication component includes two pipe fixing sleeves that are respectively fixedly connected to the top of the upper mold cover and the outer wall of one side of the valve cavity housing, and a communication pipe is fixedly connected between the two pipe fixing sleeves.

[0021] Through the above technical solution, when the output gas pressure of the control valve body mechanism at the head end is too high, the diaphragm body can be pushed through the connecting pipe, thereby pushing the drive rod mechanism to descend, reducing the opening, and realizing autonomous control of the output pressure. In the event of gas leakage, the pressure between the upper mold cover and the diaphragm body can be reduced at the tail end through the connecting pipe, so that the adjustment drive rod mechanism can be reset, and the purpose of reducing the opening can be achieved in conjunction with the corresponding adjustment spring and bracket adjustment mechanism.

[0022] The beneficial effects of the present invention are as follows: (1) By designing a bracket adjustment mechanism and a connecting component, when a leak occurs at the output pipe, the gas pressure at the tail end of the linkage combination valve drops, and then the gas pressure is connected to the pressure reduction adjustment mechanism at the tail end through the connecting pipe at that position. The gas pressure between the upper mold cover and the diaphragm body drops, and under the elastic force of the two adjusting springs, the overall drive rod mechanism rises, thereby reducing the valve opening. At the same time, when the drive rod mechanism at that position rises, it drives the connecting shaft frame to rise, and through the rotating shell and telescopic plate in the bracket adjustment mechanism, it drives the drive rod mechanism at the head end to fall, thereby reducing the gas output and avoiding excessive gas leakage. It can achieve autonomous reduction of gas output when a leak occurs; (2) By designing two opposite threaded gaskets, the present invention realizes that the drive rod mechanisms in the two control valve body mechanisms can rise and fall during normal gas transmission. The bracket adjustment mechanism will not affect the gas transmission. When a leak occurs, in conjunction with the connecting component, the two drive rod mechanisms can be linked through the bracket adjustment mechanism when the opening is closed. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of the present invention; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure; Figure 5 yes Figure 4 A magnified view of a section at point A in the middle; Figure 6 yes Figure 4 A magnified view of a section at point B in the middle; Figure 7 This is an exploded structural diagram of the drive rod mechanism and pressure reducing adjustment mechanism of the present invention; Figure 8This is a schematic diagram of the drive rod mechanism structure of the present invention; Figure 9 This is a schematic diagram of the drive rod mechanism and the bracket adjustment mechanism of the present invention; Figure 10 This is an exploded view of the support adjustment mechanism of the present invention; Figure 11 This is a schematic diagram of the detachable bottom cover structure of the present invention; Figure 12 This is a three-dimensional structural diagram of the manual valve mechanism of the present invention; Figure 13 This is an exploded view of the manual valve mechanism of the present invention; Figure 14 This is a schematic diagram of the gas transmission direction structure of the present invention.

[0024] Reference numerals: 1. Valve body base; 2. Control valve body mechanism; 201. Valve cavity housing; 202. Sealing inner shell; 203. Sealing gasket; 204. Threaded sleeve; 205. Fixing stud; 206. Connecting gasket; 207. Locking nut; 208. Internal threaded base; 209. Adjusting spring; 210. Connecting pipe; 211. Threaded ring; 3. Threaded washer ring; 4. Drive rod mechanism; 401. Adjusting valve rod; 402. Supporting circular plate; 403. Sealing valve core; 404. Connecting shaft bracket; 405. Diaphragm connecting plate; 5. Pressure reducing adjustment mechanism; 501. Threaded rod; 50 2. Mounting plate; 503. Lower mold cover; 504. Upper mold cover; 505. Diaphragm body; 506. Bolt assembly; 6. Removable bottom cover; 7. Bracket adjustment mechanism; 701. Rotating support frame; 702. Integrated bushing; 703. Rotating shaft; 704. Limiting plate; 705. Rotating shell; 706. Telescopic plate; 8. Manual valve mechanism; 801. Valve body; 802. Limiting shell; 803. Cover plate nut assembly; 804. Manual adjusting screw; 805. Connecting shell; 806. Valve plate; 9. Connecting assembly; 91. Pipe fixing sleeve; 92. Connecting pipe. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0026] like Figures 1-6As shown, a linkage combination valve of this embodiment includes a valve body base 1. Control valve body mechanisms 2 are fixedly connected to both sides of the top of the valve body base 1. The control valve body mechanism 2 includes a valve cavity housing 201 fixedly connected to the top of the valve body base 1. A sealing inner shell 202 is placed on the top of the valve body base 1. Multiple sealing gaskets 203 are filled on the inner wall of the sealing inner shell 202. A threaded sleeve 204 is installed on the top of the sealing inner shell 202. Multiple fixing studs 205 are fixedly connected to the top of the valve cavity housing 201. Connecting gaskets 206 are provided between the multiple fixing studs 205. Locking nuts 207 are screwed onto the top of the connecting gaskets 206 for each of the multiple fixing studs 205. An internal threaded base 208 is screwed onto the outer wall of the threaded sleeve 204. Two adjusting springs 209 are provided on the top of the internal threaded base 208. The valve cavity housing 201 has two... Both control valve body mechanisms 201 and 202 are fixedly connected to a connecting pipe 210. A threaded ring 211 is fixedly connected to the center of the inner wall of the valve cavity housing 201. Gas enters the valve cavity housing 201 through the connecting pipe 210 on one side and exits from the connecting pipe 210 on the other side. The sealing of the drive rod mechanism 4 can be achieved by the sealing inner shell 202 and multiple sealing gaskets 203, so that there will be no air leakage when the drive rod mechanism 4 slides. By rotating the internal threaded base 208, the elastic force of the adjusting spring 209 on the drive rod mechanism 4 can be controlled, thereby changing the critical value of gas delivery. Both control valve body mechanisms 2 are screwed with threaded gaskets 3 inside. The two threaded gaskets 3 are screwed on the threaded ring 211 respectively, and the installation directions of the two threaded gaskets 3 are opposite, which ensures that the two drive rod mechanisms 4 can rise and fall respectively when the gas is delivered, thereby generating linkage.

[0027] like Figures 1-8As shown, a drive rod mechanism 4 is slidably connected to the top center of each of the two control valve body mechanisms 2. The drive rod mechanism 4 includes a regulating valve rod 401 slidably connected between the control valve body mechanism 2 and the pressure reducing regulating mechanism 5. A support circular plate 402 is fixedly connected to the outer wall of the regulating valve rod 401, a sealing valve core 403 is fixedly connected to the bottom of the regulating valve rod 401, a connecting shaft bracket 404 is fixedly connected to one side of the support circular plate 402, and a diaphragm connecting plate 405 is fixedly connected to the top of the regulating valve rod 401. Power is achieved through the regulating valve rod 401. The transmission mechanism, with the support plate 402 and two adjusting springs 209 fixedly connected, can transmit the elastic force of the adjusting springs 209. The sealing valve core 403 and threaded washer 3 can achieve a sealed valve closure. The connecting shaft bracket 404 allows for the rotation of the connecting bracket adjusting mechanism 7, which in turn links the two drive rod mechanisms 4. Each of the two control valve body mechanisms 2 has a pressure-reducing adjusting mechanism 5 mounted on its top. The pressure-reducing adjusting mechanism 5 includes two threaded rods 501 spirally connected to both sides of the connecting washer 206. The tops of the two threaded rods 501... A mounting plate 502 is fixedly connected between the parts. A lower mold cover 503 is fixedly connected to the top of the mounting plate 502. An upper mold cover 504 is placed on top of the lower mold cover 503. A diaphragm body 505 is disposed between the lower mold cover 503 and the upper mold cover 504. Multiple bolt assemblies 506 are installed between the lower mold cover 503, the diaphragm body 505, and the upper mold cover 504. During gas transmission, the output gas can be connected between the upper mold cover 504 and the diaphragm body 505 through two connecting components 9. In the control valve body mechanism 2 at the head end... When the output gas pressure is high, it will push the diaphragm body 505 and then push the overall drive rod mechanism 4 to descend, thereby reducing the opening of the threaded gasket 3 and the sealing valve core 403, thus reducing the gas flow. When the output pipeline leaks, the leaked low pressure can be transmitted to the upper mold cover 504 at the tail end and the diaphragm body 505, thereby reducing the pressure so that the diaphragm body 505 can rise and reset, driving the overall drive rod mechanism 4 to rise, thereby reducing the valve opening. One of the control valve body mechanisms 2 has a detachable bottom cover 6 fixedly connected to its bottom.

[0028] like Figures 1-10As shown, a bracket adjustment mechanism 7 is provided between the valve body base 1 and the two control valve body mechanisms 2. The bracket adjustment mechanism 7 includes two rotating support frames 701 fixedly connected to the top of the valve body base 1. An integral bushing 702 is fixedly connected to the top center of each of the two rotating support frames 701. A rotating shaft 703 is fixedly connected between the two integral bushings 702. Limit plates 704 are fixedly connected to both sides of the center of the outer wall of the rotating shaft 703. A rotating shell 705 is rotatably connected to the center of the outer wall of the rotating shaft 703. Telescopic plates 706 are slidably connected to the inside of both sides of the rotating shell 705. During normal gas transmission, gas passes through the two control valve bodies 2. The valve body mechanism 2 causes the two drive rod mechanisms 4 to rise and fall, and then the bracket adjustment mechanism 7 links the drive rod mechanisms 4 on both sides to achieve the linkage of the opening. In the event of leakage, the air pressure at the tail end decreases, causing the drive rod mechanism 4 to rise. This allows the drive rod mechanism 4 at the head end to fall through the two telescopic plates 706 and the rotating shell 705, thereby reducing gas escape and preventing excessive gas leakage. One end of each of the two telescopic plates 706 is provided with a shaft hole corresponding to the connecting shaft bracket 404, ensuring that the bracket adjustment mechanism 7 can be rotatably connected to the two drive rod mechanisms 4 through the two telescopic plates 706.

[0029] like Figures 1-14 As shown, a manual valve mechanism 8 is fixedly connected between the two control valve body mechanisms 2. The manual valve mechanism 8 includes a valve body 801, a limit housing 802 fixedly connected to the top of the valve body 801, a cover plate nut assembly 803 fixedly connected to the top of the limit housing 802, a manual adjusting screw 804 screwed to the center of the top of the cover plate nut assembly 803, a connecting housing 805 rotatably connected to the bottom of the manual adjusting screw 804, and a valve plate 806 fixedly connected to the bottom of the connecting housing 805. In the event of a leak, this linkage combination valve reduces gas leakage. After manual intervention, the manual adjusting screw 804 is rotated, which pushes the valve plate 806 down, achieving a seal inside the valve body 801. A connecting component 9 is installed between the side and the top. The connecting component 9 includes two pipe fixing sleeves 91 that are respectively fixedly connected to the top of the upper mold cover 504 and the outer wall of the valve chamber housing 201 on one side. A connecting pipe 92 is fixedly connected between the two pipe fixing sleeves 91. Through the two connecting components 9, when the output gas pressure of the control valve body mechanism 2 at the head end is too high, the diaphragm body 505 can be pushed through the connecting pipe 92, which in turn pushes the drive rod mechanism 4 to descend, reducing the opening and realizing autonomous control of the output pressure. When gas leakage occurs, the pressure between the upper mold cover 504 and the diaphragm body 505 can be reduced at the tail end through the connecting pipe 92, so that the adjustment drive rod mechanism 4 is reset, and the purpose of reducing the opening is achieved in conjunction with the corresponding adjustment spring 209 and the bracket adjustment mechanism 7.

[0030] The working principle of this embodiment is as follows: the integrated linkage combination valve is installed at the pipeline connection, such as... Figure 14 During normal use, gas enters through the connecting pipe 210 at one end. When the pressure reaches a certain value, it pushes the sealing valve core 403 in the control valve body mechanism 2, thereby pushing the overall drive rod mechanism 4 to rise. During the rising process, the support circular plate 402, which moves with the regulating valve rod 401, pulls the two regulating springs 209 fixed thereto, thus providing tension and preventing the threaded washer 3 and the sealing valve core 403 from having a large opening, thereby achieving the purpose of controlling the gas flow. The gas is output from the connecting pipe 210 on the other side of the control valve body mechanism 2 and then enters the next control valve body mechanism 2. Similarly, in this control valve body mechanism 2, due to the reverse spiral installation of the threaded washer 3, the gas pressure at this time begins to push the sealing valve core 403 at this position, thereby pulling the overall drive rod mechanism 4 down, and through the support circular plate 402 Press the two adjusting springs 209 to control and adjust to avoid the threaded washer 3 and the sealing valve core 403 opening being too large at this position. At this time, the support round plate 402 and the connecting shaft frame 404 at one end of the bracket adjusting mechanism 7 rise, and then the support round plate 402 and the connecting shaft frame 404 at the other end fall. Then, the two connecting shaft frames 404 pull the corresponding telescopic plate 706 together, thereby driving the rotating shell 705 to rotate. At the same time, during the gas transmission process, the output gas can be connected between the upper mold cover 504 and the diaphragm body 505 through the two connecting components 9. In the control valve body mechanism 2 at the first end, when the output gas pressure is large, it will push the diaphragm body 505 and then push the overall drive rod mechanism 4 to fall, thereby reducing the opening of the threaded washer 3 and the sealing valve core 403, and thus reducing the gas flow. When a leak occurs in the output pipe during gas transmission, the gas pressure at the tail end of the linkage combination valve drops. This pressure drops and is then connected to the pressure reducing regulating mechanism 5 at the tail end via the connecting pipe 92 at that location. The gas pressure between the upper mold cover 504 and the diaphragm body 505 connected by the connecting pipe 92 is the same, which causes the gas pressure between the upper mold cover 504 and the diaphragm body 505 to drop. Under the elastic force of the two adjusting springs 209, the diaphragm body 505 at that location will rebound and rise, thereby driving the overall drive rod mechanism 4 to rise and reduce the valve opening. At the same time, when the drive rod mechanism 4 at that location rises, it drives the connecting shaft bracket 404 to rise. This will sequentially drive the drive rod mechanism 4 at the head end to fall via the telescopic plate 706, the rotating shell 705, and the telescopic plate 706 in the bracket adjusting mechanism 7, thereby reducing gas escape and preventing excessive gas leakage. This system can automatically reduce gas escape when a leak occurs.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A linkage combination valve, comprising a valve body base (1), characterized in that: Both sides of the top of the valve body base (1) are fixedly connected to the control valve body mechanism (2), and the inside of the two control valve body mechanisms (2) are screwed with threaded washers (3). The top center of each of the two control valve body mechanisms (2) is slidably connected to a drive rod mechanism (4), and the top of each of the two control valve body mechanisms (2) is equipped with a pressure reducing adjustment mechanism (5). A detachable bottom cover (6) is fixedly connected to the bottom of one of the control valve body mechanisms (2). A bracket adjustment mechanism (7) is provided between the valve body base (1) and the two control valve body mechanisms (2), a manual valve mechanism (8) is fixedly connected between the two control valve body mechanisms (2), and a communication component (9) is installed between one side and the top of the two control valve body mechanisms (2).

2. The linkage combination valve according to claim 1, characterized in that, The control valve body mechanism (2) includes a valve cavity housing (201) fixedly connected to the top of the valve body base (1). A sealing inner shell (202) is placed on the top of the valve body base (1). The inner wall of the sealing inner shell (202) is filled with multiple sealing gaskets (203). A threaded sleeve (204) is installed on the top of the sealing inner shell (202). Multiple fixing studs (205) are fixedly connected to the top of the valve cavity housing (201). Connecting studs (205) are provided between the multiple fixing studs (205). The connecting gasket (206) is provided with a locking nut (207) screwed on the top of the connecting gasket (206) by a plurality of fixing studs (205). The outer wall of the threaded sleeve (204) is screwed with an internal threaded base (208). Two adjusting springs (209) are provided on the top of the internal threaded base (208). The valve cavity housing (201) is fixedly connected to both sides by a connecting pipe (210). The valve cavity housing (201) is fixedly connected to the center of the inner wall by a threaded ring (211).

3. The linkage combination valve according to claim 2, characterized in that, The two threaded washers (3) are respectively screwed onto the threaded ring (211), and the two threaded washers (3) are installed in opposite directions.

4. The linkage combination valve according to claim 1, characterized in that, The drive rod mechanism (4) includes a regulating valve rod (401) that is slidably connected between the control valve body mechanism (2) and the pressure reducing regulating mechanism (5). A support circular plate (402) is fixedly connected to the outer wall of the regulating valve rod (401). A sealing valve core (403) is fixedly connected to the bottom of the regulating valve rod (401). A connecting shaft frame (404) is fixedly connected to one side of the support circular plate (402). A diaphragm connecting plate (405) is fixedly connected to the top of the regulating valve rod (401).

5. The linkage combination valve according to claim 2, characterized in that, The pressure reduction adjustment mechanism (5) includes two threaded rods (501) that are spirally connected to both sides of the connecting gasket (206). A mounting plate (502) is fixedly connected between the tops of the two threaded rods (501). A lower mold cover (503) is fixedly connected to the top of the mounting plate (502). An upper mold cover (504) is placed on the top of the lower mold cover (503). A diaphragm body (505) is provided between the lower mold cover (503) and the upper mold cover (504). Multiple bolt assemblies (506) are installed between the lower mold cover (503), the diaphragm body (505), and the upper mold cover (504).

6. The linkage combination valve according to claim 4, characterized in that, The bracket adjustment mechanism (7) includes two rotating support frames (701) fixedly connected to the top of the valve body base (1). An integral bushing (702) is fixedly connected to the top center of each of the two rotating support frames (701). A rotating shaft (703) is fixedly connected between the two integral bushings (702). Limiting plates (704) are fixedly connected to both sides of the center of the outer wall of the rotating shaft (703). A rotating shell (705) is rotatably connected to the center of the outer wall of the rotating shaft (703). Telescopic plates (706) are slidably connected to both sides of the rotating shell (705).

7. The linkage combination valve according to claim 6, characterized in that, One end of each of the two telescopic plates (706) is provided with a shaft hole corresponding to the connecting shaft bracket (404).

8. The linkage combination valve according to claim 5, characterized in that, The manual valve mechanism (8) includes a valve body (801), a limiting housing (802) is fixedly connected to the top of the valve body (801), a cover plate nut assembly (803) is fixedly connected to the top of the limiting housing (802), a manual adjustment screw (804) is spirally connected to the center of the top of the cover plate nut assembly (803), a connecting housing (805) is rotatably connected to the bottom of the manual adjustment screw (804), and a valve plate (806) is fixedly connected to the bottom of the connecting housing (805).

9. The linkage combination valve according to claim 8, characterized in that, The connecting component (9) includes two pipe fixing sleeves (91) that are respectively fixedly connected to the top of the upper mold cover (504) and the outer wall of the valve cavity housing (201) on one side, and a connecting pipe (92) is fixedly connected between the two pipe fixing sleeves (91).

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