Plunger type oil opening and collecting throttling valve

Abstract

The utility model discloses a plunger type oil exploitation collecting throttle valve, which belongs to the technical field of oil exploitation and comprises a base, and a control mechanism is arranged on one side above the base. The protective assembly is arranged, the L-shaped inserting rod is inserted into the inserting frame, the protective cover is attached to the side wall of the adjusting mechanism accordingly, the protective cover is used for protecting parts of the adjusting mechanism, external sundries are prevented from falling onto the parts of the adjusting mechanism, and when the parts of the adjusting mechanism need to be maintained, the parts of the adjusting mechanism are not damaged. Two sleeve plates are moved back to back to drive a connecting spring to stretch and a fixing block to move, then a protective cover is moved upwards, the protective cover moves upwards to drive an L-shaped inserting rod to move, the L-shaped inserting rod moves to drive a side block to move, then the sleeve plates are loosened, the connecting spring loses the external force to restore the original appearance, the sleeve plates are driven to move, and the sleeve plates move to drive the fixing block to be movably inserted into a fixing groove; and the protective cover is prevented from influencing the maintenance operation of a worker on components of the adjusting mechanism.

Description

A plunger-type oil extraction throttle valve Technical Field

[0001] This utility model belongs to the field of petroleum extraction technology, specifically relating to a plunger-type oil extraction throttle valve. Background Technology

[0002] The main function of a throttle valve is to control the flow rate of fluid by changing the throttling cross-section or throttling length. It controls the fluid flow rate; generally, when the pressure differential of the throttle valve is constant, the size of the opening affects the change in liquid flow rate.

[0003] Chinese Patent Application No. 202420128272.9 discloses a plunger-type oil extraction throttle valve, including a housing assembly and a drive assembly. The housing assembly includes a fixed base, a plunger-type throttle valve body, and a housing. The plunger-type throttle valve body is located at the top of the fixed base, and one end of the plunger-type throttle valve body is connected to an oil inlet pipe. The beneficial effects of this utility model are: the forward and reverse motor facilitates the automatic rotation of the half gear, eliminating the need for manual rotation of the half gear; the shape characteristics of the half gear facilitate the intermittent rotation of the transmission gear, which in turn facilitates the intermittent rotation of the adjusting screw, thus controlling the position of the adjusting plate to correspond to the number of rotations of the adjusting screw; the adjusting plate facilitates the blocking of the flow groove, facilitating the control and throttling of the plunger-type throttle valve body; and the limiting rod that engages with the limiting groove improves the stability of the adjusting plate's movement and prevents the adjusting plate from tilting.

[0004] The aforementioned patent utilizes the meshing of a half-gear and a transmission gear to move the throttle plate, thereby adjusting the flow rate of the plunger-type throttle valve. However, since the half-gear and transmission gear are directly exposed, debris from the external environment can fall between them, easily affecting the smoothness of their meshing and transmission, and consequently impacting the flow rate adjustment of the plunger-type throttle valve. Furthermore, since oil enters the plunger-type throttle valve directly through the inlet pipe, solid impurities mixed in with the oil also enter the valve and adhere to its inner wall, causing blockage and affecting the valve's transmission efficiency. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides a plunger-type oil extraction throttle valve with features of movement protection and filtration / impurity removal.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a plunger-type oil extraction throttle valve, comprising a base, a control mechanism disposed on one side above the base, a plunger-type throttle valve body fixedly connected to the other side above the base, an oil inlet pipe fixedly connected to one end of the plunger-type throttle valve body, an oil outlet pipe fixedly connected to the other end of the plunger-type throttle valve body, an adjustment mechanism disposed above the plunger-type throttle valve body, a filter assembly disposed inside the oil inlet pipe, and a protective assembly disposed above the adjustment mechanism.

[0007] Preferably, the protective component includes an L-shaped plug, a protective cover, and a plug frame. The upper two ends of the adjustment mechanism are fixedly connected to the plug frame, the L-shaped plug is inserted into the plug frame, and the protective cover is fixedly connected between the two L-shaped plugs.

[0008] Preferably, the protective component further includes an opening, a side block, and a fastener. The side block is fixedly connected to one end of the L-shaped plug near the plug frame. An opening is provided on the side wall of the plug frame at the position corresponding to the side block. A fastener is provided between the plug frame and the side block.

[0009] Preferably, the fixing component includes a fixing groove, a fixing block, a U-shaped frame, a connecting spring, a fixing post, and a sleeve plate. A U-shaped frame is fixedly connected to the side wall of the plug-in frame, a fixing post is fixedly connected inside the U-shaped frame, sleeve plates are slidably connected to both ends of the outer periphery of the fixing post, a connecting spring is fixedly connected between the two sleeve plates and located outside the fixing post, a fixing block is fixedly connected to the end of the two sleeve plates that are close to each other, and a fixing groove is provided on the side wall of the side block at the position corresponding to the fixing block.

[0010] Preferably, the filter assembly includes a filter screen barrel, a connecting ring, and an annular groove. An annular groove is provided on the inner wall of the oil inlet pipe, and a connecting ring is provided inside the annular groove. One end of the connecting ring is fixedly connected to the filter screen barrel.

[0011] Preferably, the filter assembly further includes a sealing gasket, a threaded groove, and a threaded ring. A threaded ring is fixedly connected to one end of the connecting ring and located on the periphery of the filter screen barrel. A threaded groove is provided on the side wall of the annular groove at the position corresponding to the threaded ring. Sealing gaskets are fixedly connected to one end of the connecting ring and on both sides of the threaded ring. A rotating rod is fixedly connected to the inner side wall of the connecting ring, and a rotating hole is provided on the rotating rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model is equipped with a protective component. When the L-shaped plug is inserted into the plug frame, the protective cover fits against the side wall of the adjustment mechanism. The protective cover provides protection for the components of the adjustment mechanism, preventing external debris from falling onto them. When maintenance operations are required on the components of the adjustment mechanism, the two sleeve plates are moved in opposite directions, causing the connecting spring to stretch and the fixing block to move. Then the protective cover is moved upward, causing the L-shaped plug to move. The L-shaped plug moves, causing the side block to move. Then the sleeve plates are released, the connecting spring loses its external force and returns to its original position, causing the sleeve plates to move. The movement of the sleeve plates causes the fixing block to move and insert into the fixing groove, preventing the protective cover from interfering with the maintenance operations of the adjustment mechanism components.

[0014] 2. This utility model features a filter assembly. The operator inserts their finger into the rotating hole and applies force to rotate the rotating rod. The rotating rod then rotates the connecting ring, which in turn causes the threaded ring to connect to the threaded groove. The sealing gasket then adheres to the side wall of the annular groove, facilitating the disassembly and assembly of the filter screen. Furthermore, the sealing gasket prevents oil from entering the threaded groove. Subsequent oil extraction enters the inlet pipe, is filtered by the filter screen, and then enters the plunger-type throttle valve body. This prevents solid impurities in the oil from entering the plunger-type throttle valve body and adhering to its inner wall, causing blockage and affecting subsequent transmission efficiency. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the structure of this utility model;

[0016] Figure 2 is an enlarged view of point A in Figure 1 of this utility model;

[0017] Figure 3 is a partial structural schematic diagram of the connection state between the plug-in frame and the edge block of this utility model;

[0018] Figure 4 is a structural schematic diagram of the connection state between the U-shaped frame and the fixing block of this utility model;

[0019] Figure 5 is a partial cross-sectional view of the oil inlet pipe of this utility model;

[0020] Figure 6 is an enlarged view of section B in Figure 5 of this utility model.

[0021] In the diagram: 1. Adjustment mechanism; 2. Protective component; 21. L-shaped plug rod; 22. Protective cover; 23. Plug frame; 24. Opening; 25. Side block; 26. Fixing component; 261. Fixing groove; 262. Fixing block; 263. U-shaped frame; 264. Connecting spring; 265. Fixing column; 266. Sleeve plate; 3. Oil outlet pipe; 4. Base; 5. Control mechanism; 6. Oil inlet pipe; 7. Plunger-type throttle valve body; 8. Filter assembly; 81. Filter screen barrel; 82. Connecting ring; 83. Annular groove; 84. Sealing gasket; 85. Threaded groove; 86. Threaded ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Please refer to Figures 1-6. This utility model provides the following technical solution: a plunger-type oil extraction throttle valve, including a base 4, a control mechanism 5 is provided on one side above the base 4, a plunger-type throttle valve body 7 is fixedly connected to the other side above the base 4, an oil inlet pipe 6 is fixedly connected to one end of the plunger-type throttle valve body 7, an oil outlet pipe 3 is fixedly connected to the other end of the plunger-type throttle valve body 7, an adjustment mechanism 1 is provided above the plunger-type throttle valve body 7, a filter assembly 8 is provided inside the oil inlet pipe 6, and a protective assembly 2 is provided above the adjustment mechanism 1.

[0025] Specifically, the protective component 2 includes an L-shaped insert 21, a protective cover 22, and a connector frame 23. Connectors 23 are fixedly connected to both ends of the upper part of the adjusting mechanism 1. An L-shaped insert 21 is inserted into the inside of the connector frame 23, and a protective cover 22 is fixedly connected between the two L-shaped inserts 21.

[0026] By adopting the above technical solution, the L-shaped plug 21 is moved and inserted into the plug frame 23. The protective cover 22 moves accordingly and fits against the side wall of the component of the adjustment mechanism 1. Under the action of the protective cover 22, the component of the adjustment mechanism 1 can be protected, preventing external debris from falling onto the component of the adjustment mechanism 1 and affecting the adjustment effect of the adjustment mechanism 1.

[0027] Specifically, the protective component 2 also includes an opening 24, a side block 25, and a fastener 26. The end of the L-shaped plug 21 near the plug-in frame 23 is fixedly connected to the side block 25. An opening 24 is provided on the side wall of the plug-in frame 23 at the position corresponding to the side block 25. A fastener 26 is provided between the plug-in frame 23 and the side block 25.

[0028] By adopting the above technical solution, when maintenance operations are required on the components of the adjustment mechanism 1, the protective cover 22 is moved upward. The upward movement of the protective cover 22 causes the L-shaped plug rod 21 to move inside the plug frame 23. The movement of the L-shaped plug rod 21 causes the side block 25 to move inside the opening 24. When the side block 25 moves and fits against the inner top wall of the opening 24, the side block 25 is fixed by the fixing member 26. This allows for the fixing of the L-shaped plug rod 21 and the protective cover 22, preventing the protective cover 22 from interfering with the maintenance operations of the components of the adjustment mechanism 1.

[0029] Specifically, the fastener 26 includes a fixing groove 261, a fixing block 262, a U-shaped frame 263, a connecting spring 264, a fixing post 265, and a sleeve plate 266. A U-shaped frame 263 is fixedly connected to the side wall of the insertion frame 23. A fixing post 265 is fixedly connected inside the U-shaped frame 263. Sleeve plates 266 are slidably connected to both ends of the fixing post 265. A connecting spring 264 is fixedly connected between the two sleeve plates 266 and to the periphery of the fixing post 265. A fixing block 262 is fixedly connected to the end of the two sleeve plates 266 that is close to each other. A fixing groove 261 is provided on the side wall of the edge block 25 at the position corresponding to the fixing block 262.

[0030] By adopting the above technical solution, two sleeve plates 266 are moved back along the fixed column 265. The movement of the sleeve plates 266 causes the connecting spring 264 to stretch and the fixed block 262 to move. After the side block 25 moves and fits against the inner top wall of the opening 24, the sleeve plates 266 are released. The connecting spring 264 loses the external force and returns to its original state, causing the sleeve plates 266 to move. The movement of the sleeve plates 266 causes the fixed block 262 to move and insert into the fixed groove 261. By using the cooperation of the fixed block 262 and the fixed groove 261, the side block 25 can be limited and fixed, thereby realizing the limited and fixed operation of the L-shaped plug 21 and the protective cover 22.

[0031] In this embodiment, during the oil extraction process, the inlet pipe 6 and outlet pipe 3 are connected to their corresponding ports. The L-shaped insert rod 21 is moved and inserted into the insertion frame 23. The protective cover 22 moves accordingly and fits against the side wall of the component of the regulating mechanism 1. Under the action of the protective cover 22, the component of the regulating mechanism 1 can be protected, preventing external debris from falling onto the component of the regulating mechanism 1 and affecting the regulating effect of the regulating mechanism 1. Subsequently, oil is introduced into the interior of the plunger-type throttle valve body 7. When it is necessary to control the overall flow rate of the plunger-type throttle valve body 7, the regulating mechanism 1 is controlled by the control mechanism 5, thereby realizing the flow rate adjustment operation of the plunger-type throttle valve body 7. When it is necessary to perform maintenance operations on the component of the regulating mechanism 1, it is moved along the fixed column 265 in the opposite direction. Two sleeve plates 266 move, causing the connecting spring 264 to stretch and the fixing block 262 to move, then the protective cover 22 moves upward. The upward movement of the protective cover 22 causes the L-shaped plug rod 21 to move inside the plug frame 23. The movement of the L-shaped plug rod 21 causes the side block 25 to move inside the opening 24. When the side block 25 moves and fits against the inner top wall of the opening 24, the connecting spring 264 loses the external force and returns to its original state, causing the sleeve plate 266 to move. The movement of the sleeve plate 266 causes the fixing block 262 to move and insert into the fixing groove 261, realizing the fixing operation of the L-shaped plug rod 21 and the protective cover 22. This prevents the protective cover 22 from affecting the maintenance operation of the components of the adjustment mechanism 1 by the staff, and then performs maintenance operation on the components of the adjustment mechanism 1 to ensure the subsequent use effect of the adjustment mechanism 1.

[0032] Example 2

[0033] The difference between this embodiment and Embodiment 1 is that the filter assembly 8 includes a filter screen barrel 81, a connecting ring 82, and an annular groove 83. An annular groove 83 is provided on the inner wall of the oil inlet pipe 6, and a connecting ring 82 is provided inside the annular groove 83. One end of the connecting ring 82 is fixedly connected to the filter screen barrel 81.

[0034] Specifically, the filter assembly 8 also includes a sealing gasket 84, a threaded groove 85, and a threaded ring 86. A threaded ring 86 is fixedly connected to one end of the connecting ring 82, located on the periphery of the filter screen barrel 81. A threaded groove 85 is formed on the side wall of the annular groove 83, corresponding to the position of the threaded ring 86. Sealing gaskets 84 are fixedly connected to one end of the connecting ring 82, located on both sides of the threaded ring 86. A rotating rod is fixedly connected to the inner side wall of the connecting ring 82, and a rotating hole is formed on the rotating rod.

[0035] By adopting the above technical solution, the worker inserts his finger into the rotating hole and then applies force to drive the rotating rod to rotate. The rotation of the rotating rod drives the connecting ring 82 to rotate, and the rotation of the connecting ring 82 drives the threaded ring 86 to be threaded into the threaded groove 85. The sealing gasket 84 then fits against the side wall of the annular groove 83, which facilitates the disassembly and assembly of the filter screen barrel 81. Under the action of the sealing gasket 84, oil can be prevented from entering the threaded groove 85.

[0036] In this embodiment, the operator inserts their finger into the rotating hole and applies force to rotate the rotating rod. The rotation of the rotating rod causes the connecting ring 82 to rotate, and the rotation of the connecting ring 82 causes the threaded ring 86 to be threaded into the threaded groove 85. The sealing gasket 84 then fits against the side wall of the annular groove 83, facilitating the disassembly and assembly of the filter screen barrel 81. Under the action of the sealing gasket 84, oil is prevented from entering the threaded groove 85. The subsequently extracted oil enters the oil inlet pipe 6, is filtered by the filter screen barrel 81, and then enters the plunger-type throttle valve body 7. This prevents solid impurities mixed in with the oil from entering the plunger-type throttle valve body 7 and adhering to the inner side wall of the plunger-type throttle valve body 7, causing blockage and affecting the subsequent transmission effect of the plunger-type throttle valve body 7.

[0037] The mechanism and principle of the adjusting mechanism 1, which consists of a shell, a flow-stopping plate, a flow channel, a forward and reverse motor, a half gear, a rotating rod, a transmission gear, an adjusting screw, an adjusting plate, a limiting rod, and a limiting groove, have been disclosed in a plunger-type oil extraction throttle valve disclosed in Chinese Patent Application No. 202420128272.9. Its working principle is as follows: two flow-stopping plates are fixedly connected to the inner side of the plunger-type throttle valve body 7. Multiple flow channels are formed on the surface of the flow-stopping plates. The shell is located at the top of the plunger-type throttle valve body 7. The forward and reverse motor is located at the top of the shell. A half gear is fixedly connected to the transmission shaft of the forward and reverse motor. The surface of the rotating rod is rotatably connected to the inner side of the top of the shell. A transmission gear is fixedly connected to the top of the rotating rod. The adjusting screw is located at the bottom of the rotating rod. An adjusting plate is threadedly connected to the surface of the adjusting screw via a screw nut. The surface of the flow-stopping plate... The top inner side of the housing is fixedly connected to two limiting rods that fit in contact with the surface of the regulating plate. Two limiting grooves are opened on the inner side of the regulating plate to control the operation of the forward and reverse motor. The forward and reverse motor drives the half gear to rotate. The shape characteristics of the half gear drive the transmission gear to rotate intermittently. At this time, the transmission gear and the rotating rod drive the adjusting screw to rotate intermittently. The adjusting screw drives the regulating plate to move down intermittently. The distance of each movement of the regulating plate is a corresponding value with the fixed number of rotations of the adjusting screw. When the regulating plate moves down, it will block the corresponding flow grooves on the two throttling plates, thereby controlling the overall flow rate of the plunger-type throttle valve body 7, thereby controlling the throttling. The two limiting grooves are opened inside the regulating plate, and the two limiting rods slide and engage with the two limiting grooves respectively, which helps to improve the stability of the regulating plate movement and prevents tilting.

[0038] The mechanism and principle of the control mechanism 5, which consists of a power supply box, a storage battery, and a switch panel, in this utility model have been disclosed in a plunger-type oil collection throttle valve disclosed in Chinese patent application number 202420128272.9. Its working principle is as follows: a power supply box is fixedly connected to one end of the upper part of the base 4, and a storage battery is fixedly connected inside the power supply box. A switch panel is fixedly connected to the upper part of the base 4 and to one side of the power supply box. The storage battery supplies power to the forward and reverse motor components in the regulating mechanism 1, and the switch panel controls the operation of the forward and reverse motor components in the regulating mechanism 1.

[0039] The working principle and usage process of this utility model: During the oil extraction process, the operator inserts their finger into the rotating hole and applies force to rotate the rotating rod. The rotation of the rotating rod causes the connecting ring 82 to rotate, which in turn causes the threaded ring 86 to be threaded into the threaded groove 85. The sealing gasket 84 then fits against the side wall of the annular groove 83, facilitating the disassembly and assembly of the filter screen barrel 81. Furthermore, the sealing gasket 84 prevents oil from entering the threaded groove 85. The inlet pipe 6 and outlet pipe 3 are connected to their corresponding ports, and the L-shaped insertion rod is inserted... 21 is moved and inserted into the insertion frame 23. The protective cover 22 moves accordingly and fits against the side wall of the component of the regulating mechanism 1. Under the action of the protective cover 22, the component of the regulating mechanism 1 can be protected, preventing external debris from falling onto the component of the regulating mechanism 1 and affecting the regulating effect of the regulating mechanism 1. The subsequently extracted oil enters the oil inlet pipe 6, is filtered by the filter screen barrel 81, and then enters the plunger-type throttle valve body 7. This prevents solid impurities mixed in with the oil from entering the plunger-type throttle valve body 7 and adhering to the inner side wall of the plunger-type throttle valve body 7, causing the plunger-type throttle to be affected. When the valve body 7 is blocked, it affects the subsequent transmission effect of the plunger-type throttle valve body 7, and the material is discharged through the oil outlet pipe 3. When it is necessary to control the overall flow rate of the plunger-type throttle valve body 7, the control mechanism 5 is used to control the operation of the regulating mechanism 1, thereby realizing the flow rate adjustment operation of the plunger-type throttle valve body 7. When it is necessary to perform maintenance operations on the components of the regulating mechanism 1, the two sleeves 266 are moved away from the fixed column 265. The movement of the sleeves 266 drives the connecting spring 264 to stretch and the fixed block 262 to move. Then the protective cover 22 is moved upward. The upward movement of the protective cover 22 drives the L-shaped insert rod 21. The L-shaped plug 21 moves inside the insertion frame 23, causing the side block 25 to move inside the opening 24. When the side block 25 moves and fits against the inner top wall of the opening 24, the connecting spring 264 loses its external force and returns to its original position, causing the sleeve plate 266 to move. The movement of the sleeve plate 266 causes the fixing block 262 to move and insert into the fixing groove 261, thereby realizing the fixing operation of the L-shaped plug 21 and the protective cover 22. This prevents the protective cover 22 from affecting the maintenance operation of the components of the adjustment mechanism 1 by the staff, and then performs maintenance operation on the components of the adjustment mechanism 1 to ensure the subsequent use effect of the adjustment mechanism 1.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plunger-type oil extraction throttle valve, comprising a base (4), a control mechanism (5) disposed on one side above the base (4), a plunger-type throttle valve body (7) fixedly connected to the other side above the base (4), an oil inlet pipe (6) fixedly connected to one end of the plunger-type throttle valve body (7), an oil outlet pipe (3) fixedly connected to the other end of the plunger-type throttle valve body (7), and an adjustment mechanism (1) disposed above the plunger-type throttle valve body (7), characterized in that: The oil inlet pipe (6) is equipped with a filter assembly (8), and the adjustment mechanism (1) is equipped with a protective assembly (2).

2. The plunger-type oil extraction throttle valve according to claim 1, characterized in that: The protective component (2) includes an L-shaped plug (21), a protective cover (22) and a plug frame (23). The upper two ends of the adjustment mechanism (1) are fixedly connected to the plug frame (23). An L-shaped plug (21) is inserted into the plug frame (23), and a protective cover (22) is fixedly connected between the two L-shaped plugs (21).

3. A plunger-type oil extraction throttle valve according to claim 2, characterized in that: The protective component (2) also includes an opening (24), a side block (25) and a fastener (26). The L-shaped plug (21) is fixedly connected to the side block (25) at one end near the plug frame (23). An opening (24) is provided on the side wall of the plug frame (23) at the position corresponding to the side block (25). A fastener (26) is provided between the plug frame (23) and the side block (25).

4. A plunger-type oil extraction throttle valve according to claim 3, characterized in that: The fastener (26) includes a fixing groove (261), a fixing block (262), a U-shaped frame (263), a connecting spring (264), a fixing post (265), and a sleeve plate (266). A U-shaped frame (263) is fixedly connected to the side wall of the plug frame (23). A fixing post (265) is fixedly connected inside the U-shaped frame (263). Sleeve plates (266) are slidably connected to both ends of the outer periphery of the fixing post (265). A connecting spring (264) is fixedly connected between the two sleeve plates (266) and to the outer periphery of the fixing post (265). A fixing block (262) is fixedly connected to the end of the two sleeve plates (266) that are close to each other. A fixing groove (261) is provided on the side wall of the side block (25) at the position corresponding to the fixing block (262).

5. A plunger-type oil extraction throttle valve according to claim 1, characterized in that: The filter assembly (8) includes a filter screen barrel (81), a connecting ring (82) and an annular groove (83). An annular groove (83) is provided on the inner side wall of the oil inlet pipe (6). A connecting ring (82) is provided inside the annular groove (83). One end of the connecting ring (82) is fixedly connected to the filter screen barrel (81).

6. A plunger-type oil extraction throttle valve according to claim 5, characterized in that: The filter assembly (8) further includes a sealing gasket (84), a threaded groove (85) and a threaded ring (86). A threaded ring (86) is fixedly connected to one end of the connecting ring (82) and to the periphery of the filter screen barrel (81). A threaded groove (85) is provided on the side wall of the annular groove (83) at the position corresponding to the threaded ring (86). A sealing gasket (84) is fixedly connected to one end of the connecting ring (82) and to both sides of the threaded ring (86). A rotating rod is fixedly connected to the inner side wall of the connecting ring (82), and a rotating hole is provided on the rotating rod.

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