An electric grease injection device for a plug valve

Abstract

The utility model discloses a plug valve electric grease injection device relates to petroleum technical field, specifically is a plug valve electric grease injection device, including plug valve main part and grease injection cylinder, the inner bottom wall of grease injection cylinder is installed with electric push rod, and the movable end of electric push rod is installed with piston block, and the bottom of piston block is installed with guide rod, and the inner surface of grease injection cylinder is installed with guide ring, and the top of grease injection cylinder is set up liquid inlet and liquid outlet respectively, and the inside of liquid inlet is provided with liquid inlet check valve, and the inside of liquid outlet is provided with liquid outlet check valve, and the top of grease injection cylinder is installed with liquid inlet hose and liquid outlet hose respectively. The plug valve electric grease injection device has the effect that it is convenient to inject grease, through the up-and-down movement of piston block, it is convenient to draw the external sealing lubricating grease into the inside of plug valve main part, the cooperation of guide rod and guide ring plays the role of guiding, improves the effect of injecting grease, and reaches the purpose that improves practicality.

Description

Technical Field

[0001] This utility model relates to the field of petroleum technology, specifically to an electric grease injection device for a plug valve. Background Technology

[0002] Plug valves are commonly used in oil fracturing well sites, long-distance natural gas pipelines, and as blowout preventers (BOPs) in oil drilling operations. For example, numerous plug valves are used in oil fracturing well sites to control fluid flow, while pressure-balanced plug valves are commonly used in long-distance natural gas pipelines. They are also essential BOPs in oil and gas drilling operations. They rely on a sealing grease film to ensure sealing performance and require periodic grease injection to maintain their function. A plug valve is a quick-opening, straight-through valve that typically relies on direct contact between a precision-machined metal plug and the valve body for sealing. It has a high opening and closing torque and is prone to wear. During use, sealing grease is usually injected between the valve body and the plug to form an oil film, ensuring the sealing performance of the sealing surface and reducing wear.

[0003] Existing electric grease injection devices for plug valves have poor grease injection effects, which can easily damage the plug valve and affect its service life. In addition, existing electric grease injection devices for plug valves are not convenient for disassembly and maintenance of the grease injection structure. The present invention provides an electric grease injection device for plug valves that solves the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an electric grease injection device for a plug valve, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an electric grease injection device for a stopcock valve, comprising a stopcock valve body and a grease injection cylinder. An electric push rod is installed on the inner bottom wall of the grease injection cylinder, a piston block is installed on the movable end of the electric push rod, a guide rod is installed at the bottom of the piston block, a guide ring is installed on the inner surface of the grease injection cylinder, an inlet and an outlet are respectively opened on the top of the grease injection cylinder, an inlet check valve is installed inside the inlet, an outlet check valve is installed inside the outlet, an inlet hose and an outlet hose are respectively installed on the top of the grease injection cylinder, an internal threaded ring connector is provided at the end of the outlet hose, an external threaded ring connector and a fixing plate are respectively installed on the outer surface of the stopcock valve body, a vertical plate is installed on the outer surface of the grease injection cylinder, a positioning block is installed behind the vertical plate, L-shaped plates are installed on both sides of the vertical plate, threaded holes are opened on both sides of the fixing plate and one side of the L-shaped plate, and bolts are installed inside the threaded holes.

[0006] Optionally, the internal threaded ring connector has a sealing ring inside, the internal threaded ring connector is threadedly connected to the external threaded ring connector, and the end of the external threaded ring connector abuts against the sealing ring.

[0007] Optionally, the position of the inlet corresponds to the position of the inlet hose, and the position of the outlet corresponds to the position of the outlet hose.

[0008] Optionally, the outer surface of the piston block abuts against the inner surface of the grease injection cylinder, and the position of the piston block corresponds to the position of the liquid inlet and the liquid outlet, respectively.

[0009] Optionally, the rear of the vertical plate abuts against the front of the fixed plate, and the front of the fixed plate is provided with a positioning groove that matches the positioning block, with the end of the positioning block inserted into the positioning groove.

[0010] Optionally, the inner wall of the L-shaped plate abuts against the side of the fixed plate, the bottom of the grease injection cylinder is provided with an exhaust port, and the guide rod passes through the guide ring.

[0011] This utility model provides an electric grease injection device for a plug valve, which has the following advantages: 1. This electric grease injection device for the stopcock valve, through the arrangement of a grease injection cylinder, electric push rod, piston block, guide rod, guide ring, inlet, outlet, inlet check valve, outlet check valve, inlet hose, and outlet hose, enables convenient grease injection. The up-and-down movement of the piston block facilitates the extraction of external sealing grease into the interior of the stopcock valve body. The cooperation of the guide rod and guide ring provides guidance, improving the grease injection effect and achieving the goal of enhancing practicality.

[0012] 2. This electric grease injection device for plug valves, through the arrangement of internal threaded ring connectors, external threaded ring connectors, a fixing plate, a vertical plate, a positioning block, an L-shaped plate, bolts, and a sealing ring, enables the electric grease injection device for plug valves to facilitate the disassembly and maintenance of the grease injection structure. The positioning block serves to position the device during installation, and the bolts improve the stability of the installation. The cooperation of the internal and external threaded ring connectors facilitates the delivery of sealing grease to the interior of the plug valve body, and the sealing ring improves the sealing performance at the connection, thereby enhancing practicality. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view sectional diagram of the present invention. Figure 3 This utility model Figure 2 Enlarged structural diagram at point A; Figure 4 This utility model Figure 2 Enlarged structural diagram at point B; Figure 5 This is a structural schematic diagram of the present invention viewed from below.

[0014] In the diagram: 1. Plug valve body; 2. Grease injection cylinder; 3. Electric push rod; 4. Piston block; 5. Guide rod; 6. Guide ring; 7. Inlet; 8. Outlet; 9. Inlet check valve; 10. Outlet check valve; 11. Inlet hose; 12. Outlet hose; 13. Internal threaded ring connector; 14. External threaded ring connector; 15. Fixing plate; 16. Vertical plate; 17. Positioning block; 18. L-shaped plate; 19. Bolt; 20. Sealing ring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example 1

[0016] Please see Figures 1 to 5 This utility model provides a technical solution: an electric grease injection device for a stopcock valve, comprising a stopcock valve body 1 and a grease injection cylinder 2. An electric push rod 3 is installed on the inner bottom wall of the grease injection cylinder 2. A piston block 4 is installed on the movable end of the electric push rod 3. A guide rod 5 is installed at the bottom of the piston block 4. A guide ring 6 is installed on the inner surface of the grease injection cylinder 2. An inlet 7 and an outlet 8 are respectively opened on the top of the grease injection cylinder 2. An inlet check valve 9 is installed inside the inlet 7, and an outlet check valve 10 is installed inside the outlet 8. The top of the valve body 1 is equipped with an inlet hose 11 and an outlet hose 12. The end of the outlet hose 12 is provided with an internal threaded ring connector 13. The outer surface of the valve body 1 is equipped with an external threaded ring connector 14 and a fixing plate 15. The outer surface of the grease injection cylinder 2 is equipped with a vertical plate 16. A positioning block 17 is installed behind the vertical plate 16. L-shaped plates 18 are installed on both sides of the vertical plate 16. Threaded holes are opened on both sides of the fixing plate 15 and one side of the L-shaped plate 18. Bolts 19 are installed inside the threaded holes.

[0017] Specifically, the mating of the internal threaded ring connector 13 and the external threaded ring connector 14 facilitates the connection between the grease injection structure and the plug valve body 1, making grease injection easier. The sealing ring 20 improves the sealing performance at the connection between the internal threaded ring connector 13 and the external threaded ring connector 14.

[0018] Please see Figures 2 to 4 The internal threaded ring connector 13 is provided with a sealing ring 20. The internal threaded ring connector 13 is threadedly connected to the external threaded ring connector 14, and the end of the external threaded ring connector 14 abuts against the sealing ring 20.

[0019] Specifically, sealing grease is drawn through the inlet 7 and the inlet hose 11, and the sealing grease is delivered to the inside of the plug valve body 1 through the outlet 8 and the outlet hose 12.

[0020] Please see Figures 2 to 3The position of the inlet 7 corresponds to the position of the inlet hose 11, and the position of the outlet 8 corresponds to the position of the outlet hose 12.

[0021] Specifically, by moving the piston block 4 up and down, it is convenient to draw external sealing grease and deliver it into the interior of the plug valve body 1.

[0022] Please see Figures 2 to 3 The outer surface of the piston block 4 abuts against the inner surface of the grease injection cylinder 2, and the position of the piston block 4 corresponds to the position of the liquid inlet 7 and the liquid outlet 8, respectively.

[0023] Specifically, the positioning block 17 and the positioning groove facilitate the installation and disassembly of the grease injection cylinder 2.

[0024] Please see Figures 1 to 5 The rear of the vertical plate 16 abuts against the front of the fixed plate 15. The front of the fixed plate 15 is provided with a positioning groove that matches the positioning block 17. The end of the positioning block 17 is inserted into the inside of the positioning groove.

[0025] Specifically, the exhaust port is designed to facilitate the movement of piston block 4, and the cooperation between guide rod 5 and guide ring 6 improves the stability of piston block 4's up-and-down movement.

[0026] Please see Figures 1 to 5 The inner wall of the L-shaped plate 18 abuts against the side of the fixed plate 15, the bottom of the grease injection cylinder 2 is provided with an exhaust port, and the guide rod 5 passes through the guide ring 6.

[0027] In use, the threaded connection between the internal threaded ring connector 13 and the external threaded ring connector 14, and the sealing ring 20 improve the sealing performance at the connection between the internal threaded ring connector 13 and the external threaded ring connector 14, delivers sealing grease into the interior of the plug valve body 1. The movable end of the electric push rod 3 retracts, causing the piston block 4 to move downwards along the length of the guide ring 6, thus improving the stability of the piston block 4's movement. The piston block 4 abuts against the inner surface of the plug valve body 1. External sealing grease is drawn through the inlet hose 11, allowing it to enter the grease injection cylinder 2 through the inlet port 7 and the inlet check valve 9. Inside, the movable end of the electric push rod 3 extends, causing the piston block 4 to move upward, allowing the sealing grease in the grease injection cylinder 2 to enter the interior of the outlet hose 12 through the outlet port 8 and the outlet check valve 10. Then, the sealing grease enters the interior of the plug valve body 1, facilitating grease injection. When disassembling the grease injection structure, the bolt 19 is turned to disengage from the threaded hole. Then, the grease injection cylinder 2 is moved to disengage the positioning block 17 on the vertical plate 16 from the positioning groove on the fixed plate 15. Then, the internal threaded ring connector 13 is turned to separate the internal threaded ring connector 13 from the external threaded ring connector 14, facilitating the disassembly and maintenance of the grease injection structure and improving its practicality.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An electric grease injection device for a stopcock valve, comprising a stopcock valve body and a grease injection cylinder, characterized in that: An electric push rod is installed on the inner bottom wall of the grease injection cylinder. A piston block is installed on the movable end of the electric push rod, and a guide rod is installed at the bottom of the piston block. A guide ring is installed on the inner surface of the grease injection cylinder. An inlet and an outlet are respectively opened on the top of the grease injection cylinder. An inlet check valve is installed inside the inlet, and an outlet check valve is installed inside the outlet. An inlet hose and an outlet hose are respectively installed on the top of the grease injection cylinder. An internal threaded ring connector is installed at the end of the outlet hose. An external threaded ring connector and a fixing plate are respectively installed on the outer surface of the plug valve body. A vertical plate is installed on the outer surface of the grease injection cylinder. A positioning block is installed behind the vertical plate. L-shaped plates are installed on both sides of the vertical plate. Threaded holes are opened on both sides of the fixing plate and one side of the L-shaped plate. Bolts are installed inside the threaded holes.

2. The electric grease injection device for a plug valve according to claim 1, characterized in that: The internal threaded ring connector has a sealing ring inside. The internal threaded ring connector is threadedly connected to the external threaded ring connector, and the end of the external threaded ring connector abuts against the sealing ring.

3. The electric grease injection device for a plug valve according to claim 1, characterized in that: The position of the inlet corresponds to the position of the inlet hose, and the position of the outlet corresponds to the position of the outlet hose.

4. The electric grease injection device for a plug valve according to claim 1, characterized in that: The outer surface of the piston block abuts against the inner surface of the grease injection cylinder, and the position of the piston block corresponds to the position of the inlet and outlet of the liquid injection cylinder, respectively.

5. The electric grease injection device for a plug valve according to claim 1, characterized in that: The back of the vertical plate abuts against the front of the fixed plate. The front of the fixed plate has a positioning groove that matches the positioning block, and the end of the positioning block is inserted into the positioning groove.

6. The electric grease injection device for a plug valve according to claim 1, characterized in that: The inner wall of the L-shaped plate abuts against the side of the fixed plate, the bottom of the grease injection cylinder has an exhaust port, and the guide rod passes through the guide ring.

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