Grease injection device for maintenance of long-distance pipeline valve

Abstract

The utility model discloses a grease injection device for maintenance of a long-distance pipeline valve, which comprises a mounting seat, and a cylindrical grease injection barrel is fixedly mounted on the upper surface of the mounting seat; an annular threaded groove is formed in the inner wall of one end of the grease injection barrel, a sleeve is in threaded connection with the inner wall of the annular threaded groove, and a grease injection head is fixedly connected to the end, away from the interior of the grease injection barrel, of the sleeve. The grease injection device has the advantages that through the cooperative arrangement of the grease injection barrel, the annular threaded groove, the sleeve, the grease injection head, scale marks, a handle frame, a lead screw, a moving block, a moving ring, a connecting rod, a moving disc, a piston rod and a piston, the amount of sealing grease for sealing the valve can be accurately controlled, and the situation that the sealing grease is too much or too little is greatly avoided; the sealing and maintaining effects on the valve can be guaranteed while sealing grease is prevented from being wasted, the grease injection head is easy and convenient to mount and dismount, and the sealing grease can be conveniently added into the grease injection cylinder and the grease injection cylinder can be conveniently cleaned.

Description

Technical fields:

[0001] This utility model relates to the field of grease injection device technology, and in particular to a grease injection device for the maintenance of valves in long-distance pipelines. Background technology:

[0002] Long-distance pipelines refer to pipelines used to transport commercial media between production sites, storage facilities, and user units. Multiple valves are required in long-distance pipelines. To ensure the normal operation of these valves, routine maintenance is necessary. Regular grease injection is one such maintenance item for long-distance pipelines. By injecting a special sealing grease into the critical parts of the valves, the sealing performance is enhanced under various environmental conditions such as temperature and pressure, preventing leakage and loss. This sealing grease has excellent chemical properties and adhesion, protecting the valves from corrosion and damage and extending their service life. Typically, workers use a grease injection device to perform this operation.

[0003] Most current grease injection devices place the sealing grease inside the grease injection cylinder, and then manually push the piston inside the cylinder to move it to perform grease suction and injection. However, it is not convenient to accurately control the amount of sealing grease injected into the valve during the grease injection process. If too much lubricating grease is injected, it will be wasted, and if too little sealing grease is injected, it will affect the maintenance effect of the valve. Therefore, a grease injection device for the maintenance of valves in long-distance pipelines is needed to solve the above problems. Utility Model Content:

[0004] In order to solve the above problems, the purpose of this utility model is to provide a grease injection device for the maintenance of valves in long-distance pipelines.

[0005] This utility model is implemented by the following technical solution:

[0006] A grease injection device for maintenance of valves in long-distance pipelines includes a mounting base, on the upper surface of which a cylindrical grease injection cylinder is fixedly mounted; an annular threaded groove is formed on the inner wall of one end of the grease injection cylinder, and a sleeve is threadedly connected to the inner wall of the annular threaded groove; a grease injection head is fixedly connected to the end of the sleeve away from the inside of the grease injection cylinder, and the grease injection head is conical in shape.

[0007] The outer surface of the grease injection cylinder is provided with graduation markings;

[0008] A handle frame is fixedly connected to the outer surface of the grease injection cylinder. The handle frame consists of a U-shaped connecting frame and two L-shaped brackets. The two ends of the connecting frame are fixedly connected to the outer surface of the grease injection cylinder through the L-shaped brackets.

[0009] A lead screw parallel to the length direction of the grease injection cylinder is provided on the outer surface of the grease injection cylinder, and the length of the lead screw is the same as the length of the grease injection cylinder; both ends of the lead screw are rotatably connected to the two L-shaped brackets through bearings; a knob is fixedly connected to the end of the lead screw away from the grease injection head;

[0010] The outer surface of the lead screw is threaded with a movable block, and a semi-circular movable ring is provided on the outside of the grease injection cylinder. The center of the movable ring falls on the central axis of the grease injection cylinder. The bottom end of the movable block is fixedly connected to the movable ring, and the two ends of the movable ring are respectively fixedly connected to one end of two connecting rods. The other ends of the two connecting rods are fixedly connected to a movable disk. The length direction of the two connecting rods is parallel to the length direction of the grease injection cylinder, and the plate surface of the movable disk is perpendicular to the length direction of the grease injection cylinder.

[0011] A piston rod coaxially arranged with the grease injection cylinder is fixedly connected to the side plate of the movable disk near the movable ring. A piston is fixedly connected to the end of the piston rod away from the movable disk. The piston rod passes through the end of the grease injection cylinder away from the grease injection head and extends into the interior of the grease injection cylinder. The piston is located inside the grease injection cylinder. The diameter of the piston is adapted to the inner diameter of the grease injection cylinder. The piston is slidably connected to the grease injection cylinder.

[0012] Furthermore, the piston and the moving ring are positioned correspondingly, with the side of the piston away from the moving disk and the side of the moving ring away from the moving disk on the same vertical plane.

[0013] Furthermore, a threaded hole is provided on the bottom side of the mounting base, and a threaded rod is threadedly connected to the inner wall of the threaded hole, with a handle fixedly connected to the bottom end of the threaded rod.

[0014] Furthermore, fixing plates are fixedly connected to both symmetrical sides of the mounting base, and fixing holes are provided on the fixing plates.

[0015] Furthermore, the inner diameter of the movable ring is adapted to the outer diameter of the grease injection cylinder, and the movable ring is slidably connected to the grease injection cylinder.

[0016] Furthermore, two guide grooves are provided on the top side of the mounting base, and guide sliders that are fixedly connected to both ends of the moving ring are slidably connected to the inner walls of the two guide grooves.

[0017] Furthermore, the sleeve is adapted to the size of the annular threaded groove, the maximum outer diameter of the grease injection head is equal to the outer diameter of the grease injection cylinder, and the maximum inner diameter of the grease injection head is equal to the inner diameter of the grease injection cylinder.

[0018] Advantages of this utility model:

[0019] This invention, through the coordinated arrangement of a grease injection cylinder, annular threaded groove, sleeve, grease injection head, graduation marks, handle bracket, lead screw, moving block, moving ring, connecting rod, moving disc, piston rod, and piston, enables precise control of the amount of sealing grease used to seal valves. This significantly avoids situations where there is too much or too little sealing grease, ensuring effective sealing and maintenance of the valve while preventing grease waste. Furthermore, it simplifies the installation and removal of the grease injection head, facilitating the addition of sealing grease to the grease injection cylinder and its cleaning. The threaded hole and threaded rod further simplify the installation and removal of the handle, reducing the overall size of the grease injection device and facilitating transportation. After removing the handle, the mounting base can be fixed in a suitable position using a fixing plate, making it easy for operators to handle the grease injection device and secure the mounting base. Attached image description:

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of this utility model without the grease injection head assembled;

[0024] Figure 4 This is a schematic diagram of the grease injection head of this utility model;

[0025] Figure 5 This is a structural schematic diagram of the movable ring and its connecting components of this utility model;

[0026] Figure 6 This is a structural schematic diagram of the handle and its connecting components of this utility model;

[0027] Figure 7 This is a structural schematic diagram of the mounting base and its connecting components of this utility model.

[0028] In the diagram: 1-Mounting base, 2-Grease injection cylinder, 3-Annular threaded groove, 4-Sleeve, 5-Grease injection head, 6-Scale marking, 7-Handle bracket, 8-Screw rod, 9-Moving block, 10-Moving ring, 11-Connecting rod, 12-Moving disc, 13-Piston rod, 14-Piston, 15-Threaded hole, 16-Threaded rod, 17-Handle, 18-Fixing plate, 19-Guide groove, 20-Guide slider. Detailed implementation method:

[0029] 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.

[0030] Example 1:

[0031] like Figure 1-7 The illustrated grease injection device for valve maintenance in long-distance pipelines includes a mounting base 1. A cylindrical grease injection cylinder 2 is fixedly mounted on the upper surface of the mounting base 1, and the length of the grease injection cylinder 2 is the same as the length of the mounting base 1. An annular threaded groove 3 is formed on the inner wall of one end of the grease injection cylinder 2. A sleeve 4 is threadedly connected to the inner wall of the annular threaded groove 3. A grease injection head 5 is fixedly connected to the end of the sleeve 4 away from the inside of the grease injection cylinder 2. The grease injection head 5 is conical in shape. The sleeve 4 and the threaded groove 3 not only make the installation and removal of the grease injection head 5 relatively simple. This design facilitates the sealing between the grease injection head 5 and the grease injection cylinder 2. A scale mark 6 is provided on the outer surface of the grease injection cylinder 2, allowing operators to clearly understand the amount of sealing grease inside. A handle 7 is fixedly connected to the outer surface of the grease injection cylinder 2. The handle 7 consists of a U-shaped connecting frame and two L-shaped supports. Both ends of the connecting frame are fixedly connected to the outer surface of the grease injection cylinder 2 via the L-shaped supports, making it easy to pick up the grease injection cylinder 2 using the handle 7.

[0032] A lead screw 8 is provided on the outer surface of the grease injection cylinder 2, which is parallel to the length direction of the grease injection cylinder 2. The length of the lead screw 8 is the same as the length of the grease injection cylinder 2. Both ends of the lead screw 8 are rotatably connected to two L-shaped brackets through bearings, which can ensure the stability of the lead screw 8 when rotating. A knob is fixedly connected to the end of the lead screw 8 away from the grease injection head 5, which facilitates the rotation of the lead screw 8.

[0033] The outer surface of the lead screw 8 is threaded with a moving block 9. A semi-circular moving ring 10 is provided on the outside of the grease injection cylinder 2. The center of the moving ring 10 falls on the central axis of the grease injection cylinder 2. The bottom end of the moving block 9 is fixedly connected to the moving ring 10. The two ends of the moving ring 10 are respectively fixedly connected to one end of two connecting rods 11. The other ends of the two connecting rods 11 are fixedly connected to the moving disk 12. The length direction of the two connecting rods 11 is parallel to the length direction of the grease injection cylinder 2. The plate surface of the moving disk 12 is perpendicular to the length direction of the grease injection cylinder 2.

[0034] A piston rod 13, coaxially arranged with the grease injection cylinder 2, is fixedly connected to the side plate of the movable disk 12 near the movable ring 10. A piston 14 is fixedly connected to the end of the piston rod 13 away from the movable disk 12. The piston 14 corresponds to the position of the movable ring 10. The side of the piston 14 away from the movable disk 12 and the side of the movable ring 10 away from the movable disk 12 are on the same vertical plane, so that the position of the piston 14 can be more clearly connected through the position of the movable ring 10. When adding sealant to the inside of the grease injection cylinder 2, the grease injection head 5 can be rotated to drive the sleeve 4 to rotate, so that the sleeve 4 separates from the annular thread groove 3, and then the sealant can be added to the inside of the grease injection cylinder 2, making the operation of adding sealant relatively simple.

[0035] In this embodiment, a threaded hole 15 is provided on the bottom side of the mounting base 1, and a threaded rod 16 is threadedly connected to the inner wall of the threaded hole 15. A handle 17 is fixedly connected to the bottom end of the threaded rod 16. The threaded rod 16 and the threaded hole 15 facilitate the separation of the handle 17 from the mounting base 1. When using the grease injection device, the handle 17 makes it easy to pick up the mounting base 1, thereby facilitating subsequent grease injection operations. During the transportation of the grease injection device, the handle 17 can be separated from the mounting base 1, which can reduce the overall volume of the grease injection device. Fixing plates 18 are fixedly connected to the two symmetrical sides of the mounting base 1. Fixing holes are provided on the fixing plates 18, which facilitate the fixing of the mounting base 1 in a suitable position.

[0036] The top side of the mounting base 1 has two guide grooves 19. The inner walls of the two guide grooves 19 are slidably connected to guide sliders 20 that are fixedly connected to both ends of the moving ring 10. The guide sliders 20 and the guide grooves 19 enable the moving ring 10 to move only along the direction of the guide grooves 19.

[0037] In this embodiment, the sleeve 4 is matched with the size of the annular threaded groove 3, the maximum outer diameter of the grease injection head 5 is equal to the outer diameter of the grease injection cylinder 2, and the maximum inner diameter of the grease injection head 5 is equal to the inner diameter of the grease injection cylinder 2, so that the sealing grease inside the grease injection cylinder 2 can smoothly enter the interior of the grease injection cylinder 2.

[0038] The inner diameter of the moving ring 10 is adapted to the outer diameter of the grease injection cylinder 2. The moving ring 10 is slidably connected to the grease injection cylinder 2, so that the moving ring 10 can move smoothly along the direction of the grease injection cylinder 2.

[0039] The piston rod 13 passes through the end of the grease injection cylinder 2 away from the grease injection head 5 and extends into the interior of the grease injection cylinder 2. The piston 14 is located inside the grease injection cylinder 2. The diameter of the piston 14 is adapted to the inner diameter of the grease injection cylinder 2. The piston 14 is slidably connected to the grease injection cylinder 2, so that the piston rod 13 can drive the piston 14 to move smoothly and squeeze the sealing grease inside the grease injection cylinder 2 to move.

[0040] Working principle:

[0041] When performing grease injection on a long-distance pipeline valve using this embodiment, rotating the lead screw 8 moves the moving block 9, which in turn moves the moving ring 10. As the moving ring 10 moves, the connecting rod 11 drives the moving disc 12 and piston rod 13 to move, and the piston 14 moves accordingly, pushing out the sealing grease inside the grease injection cylinder 2. The sealing grease is then removed from the inside of the grease injection head 5, thus adding sealing grease to the long-distance pipeline valve. During this process, the amount of sealing grease discharged can be determined by observing the relative position of the moving ring 10 and the scale mark 6, thereby accurately controlling the amount of sealing grease used to seal the long-distance pipeline valve and performing precise grease injection on the long-distance pipeline valve.

[0042] In summary, this grease injection device for valve maintenance in long-distance pipelines, through the coordinated arrangement of the grease injection cylinder 2, annular threaded groove 3, sleeve 4, grease injection head 5, scale markings 6, handle bracket 7, screw 8, moving block 9, moving ring 10, connecting rod 11, moving disc 12, piston rod 13, and piston 14, can accurately control the amount of sealing grease used to seal the valve, greatly avoiding situations of too much or too little sealing grease. It ensures effective sealing and maintenance of the valve while preventing grease waste. Furthermore, it simplifies the installation and removal of the grease injection head 5, facilitating the addition of sealing grease to the grease injection cylinder 2 and its cleaning. The coordinated arrangement of the threaded hole 15 and threaded rod 16 further simplifies the installation and removal of the handle 17, reducing the overall size of the grease injection device and facilitating transportation. After removing the handle 17, the mounting base 1 can be fixed in a suitable position via the fixing plate 18, making it easy for operators to handle the grease injection device and secure the mounting base 1.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grease injection device for maintenance of valves in long-distance pipelines, characterized in that, The device includes a mounting base, on the upper surface of which a cylindrical grease injection cylinder is fixedly mounted; an annular threaded groove is formed on the inner wall of one end of the grease injection cylinder, and a sleeve is threadedly connected to the inner wall of the annular threaded groove; a grease injection head is fixedly connected to the end of the sleeve away from the inside of the grease injection cylinder, and the grease injection head is conical in shape. The outer surface of the grease injection cylinder is provided with graduation markings; A handle frame is fixedly connected to the outer surface of the grease injection cylinder. The handle frame consists of a U-shaped connecting frame and two L-shaped brackets. The two ends of the connecting frame are fixedly connected to the outer surface of the grease injection cylinder through the L-shaped brackets. A lead screw parallel to the length direction of the grease injection cylinder is provided on the outer surface of the grease injection cylinder, and the length of the lead screw is the same as the length of the grease injection cylinder; both ends of the lead screw are rotatably connected to the two L-shaped brackets through bearings; a knob is fixedly connected to the end of the lead screw away from the grease injection head; The outer surface of the lead screw is threaded with a movable block, and a semi-circular movable ring is provided on the outside of the grease injection cylinder. The center of the movable ring falls on the central axis of the grease injection cylinder. The bottom end of the movable block is fixedly connected to the movable ring, and the two ends of the movable ring are respectively fixedly connected to one end of two connecting rods. The other ends of the two connecting rods are fixedly connected to a movable disk. The length direction of the two connecting rods is parallel to the length direction of the grease injection cylinder, and the plate surface of the movable disk is perpendicular to the length direction of the grease injection cylinder. A piston rod coaxially arranged with the grease injection cylinder is fixedly connected to the side plate of the movable disk near the movable ring. A piston is fixedly connected to the end of the piston rod away from the movable disk. The piston rod passes through the end of the grease injection cylinder away from the grease injection head and extends into the interior of the grease injection cylinder. The piston is located inside the grease injection cylinder. The diameter of the piston is adapted to the inner diameter of the grease injection cylinder. The piston is slidably connected to the grease injection cylinder.

2. The grease injection device for maintenance of valves in long-distance pipelines according to claim 1, characterized in that, The piston and the moving ring are positioned opposite each other, with the side of the piston away from the moving disk and the side of the moving ring away from the moving disk on the same vertical plane.

3. The grease injection device for maintenance of valves in long-distance pipelines according to claim 1, characterized in that, A threaded hole is provided on the bottom side of the mounting base, and a threaded rod is threadedly connected to the inner wall of the threaded hole. A handle is fixedly connected to the bottom end of the threaded rod.

4. A grease injection device for maintenance of valves in long-distance pipelines according to claim 1, characterized in that, Fixing plates are fixedly connected to the two symmetrical sides of the mounting base, and fixing holes are provided on the fixing plates.

5. A grease injection device for maintenance of valves in long-distance pipelines according to claim 1, characterized in that, The inner diameter of the movable ring is adapted to the outer diameter of the grease injection cylinder, and the movable ring is slidably connected to the grease injection cylinder.

6. A grease injection device for maintenance of valves in long-distance pipelines according to claim 5, characterized in that, Two guide grooves are provided on the top side of the mounting base, and guide sliders that are fixedly connected to both ends of the moving ring are slidably connected to the inner walls of the two guide grooves.

7. A grease injection device for maintenance of valves in long-distance pipelines according to claim 1, characterized in that, The sleeve is adapted to the size of the annular threaded groove, the maximum outer diameter of the grease injection head is equal to the outer diameter of the grease injection cylinder, and the maximum inner diameter of the grease injection head is equal to the inner diameter of the grease injection cylinder.

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