Valve guide pin shaft

Abstract

The valve guide pin shaft comprises a guide pin shaft body, oil discharge holes and an oil injection port and further comprises a threaded port, a threaded head and a plug, the oil discharge holes are formed in the top of one side of the guide pin shaft body, the threaded port is formed in the top of the guide pin shaft body, and the oil injection port is formed in the bottom of the threaded port. The oil injection port is communicated with the oil discharge hole, the threaded port is in threaded connection with a corresponding threaded head, and a plug corresponding to the oil injection port is arranged at the bottom of the threaded head. The guide pin shaft mechanism with the lubricating structure is provided for the valve, workers can be helped to discharge lubricating oil attached to the surface of the guide pin shaft under the condition that a valve shell and a valve seat are not dismantled, the lubricating effect of wire sleeving between the guide pin shaft and a plate in the valve body is guaranteed, and the service life of the guide pin shaft is prolonged. Friction loss between the guide pin shaft and a plate in the valve body is reduced, and the operation stability of the valve is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve guide pin. Background Technology

[0002] Valve guide pins, also commonly known as "valve guide rods," "shaft pins," or "pins," are mechanical parts used to fix valve plates and guide sleeves (or valve seats). One end of the pin is connected to the valve plate, and the other end is connected to the piping system through the sleeve or valve seat. This allows the valve to move stably along a predetermined axial direction when opening and closing, thereby maintaining the valve's tightness and controllability.

[0003] Over time, the lubricity of the guide pin surface of existing valves decreases, leading to increased friction during the guiding process and affecting the axial stability of the valve.

[0004] Existing valve guide pins have the following drawbacks: users cannot lubricate the guide pin surface without removing the valve housing or seat. Therefore, we propose a new valve guide pin. Summary of the Invention

[0005] The main purpose of this utility model is to provide a valve guide pin that can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A valve guide pin includes a guide pin, an oil drain hole, and an oil filling port. It also includes a threaded opening, a threaded head, and a plug. An oil drain hole is provided on the top of one side of the guide pin. A threaded opening is provided on the top of the guide pin. An oil filling port is provided at the bottom of the threaded opening. The oil filling port is connected to the oil drain hole. A corresponding threaded head is threaded onto the threaded opening. A plug corresponding to the oil filling port is provided at the bottom of the threaded head.

[0008] Furthermore, the top of the threaded head is provided with an internal hexagonal hole.

[0009] Furthermore, a flange ring integrally formed with the top periphery of the guide pin is provided, and mounting holes are provided at equal intervals on the flange ring.

[0010] Furthermore, a rubber sealing ring is provided between the threaded head and the threaded opening.

[0011] Furthermore, the diameter of the oil inlet is smaller than that of the threaded inlet.

[0012] Compared with the prior art, this utility model has the following beneficial effects: The assembly consisting of a guide pin, an oil drain hole, an oil inlet, a threaded port, a threaded head, and a plug provides a guide pin mechanism with a lubrication structure for the valve. This allows personnel to apply and drain lubricating oil to the surface of the guide pin without removing the valve body or seat, ensuring lubrication of the wire connection between the guide pin and the internal valve body plates. This reduces frictional loss between the guide pin and the internal valve body plates, ensuring the stability of valve operation and solving the problem that existing valve users cannot lubricate the surface of the guide pin without removing the valve body or seat. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a valve guide pin according to the present invention.

[0014] Figure 2 This is a schematic diagram of the guide pin structure of a valve guide pin according to the present invention.

[0015] Figure 3 This utility model relates to a valve guide pin. Figure 1 Enlarged diagram of point A in the middle.

[0016] In the diagram: 1. Drain hole; 2. Flange ring; 3. Oil inlet; 4. Threaded port; 5. Threaded head; 6. Plug; 7. Rubber sealing ring; 8. Mounting hole; 9. Socket head; 10. Guide pin. Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figure 1-3 As shown, a valve guide pin includes a guide pin 10, an oil drain hole 1, and an oil inlet 3. It also includes a threaded port 4, a threaded head 5, and a plug 6. The guide pin 10 has an oil drain hole 1 on one side of its top. The guide pin 10 has a threaded port 4 on its top. The threaded port 4 has an oil inlet 3 at its bottom. The oil inlet 3 communicates with the oil drain hole 1. The threaded port 4 is threaded with a corresponding threaded head 5. The threaded head 5 has a plug 6 at its bottom that corresponds to the oil inlet 3. The threaded head 5 has an internal hexagonal hole 9 on its top.

[0019] The guide pin 10 has an integral flange ring 2 on its top periphery, and the flange ring 2 has mounting holes 8 at equal intervals.

[0020] A rubber sealing ring 7 is provided between the threaded head 5 and the threaded opening 4, and the diameter of the oil injection port 3 is smaller than that of the threaded opening 4; the rubber sealing ring 7 can increase the sealing performance after the threaded head 5 and the threaded opening 4 are threaded together.

[0021] It should be noted that this utility model is a valve guide pin. During operation, the bottom of the guide pin 10 is inserted through the valve shell and inner plate in sequence and connected to the valve plate. Then, the flange ring 2 at the top of the guide pin 10 is threadedly connected to the valve shell, and the threaded head 5 is inserted through and placed outside the valve shell. Based on the guide pin 10, the valve moves stably along the predetermined axis when opening and closing. During use, the valve maintenance personnel periodically use a hex screwdriver to insert into the internal hexagonal hole 9 of the threaded head 5 to remove the threaded head 5. Then, the personnel can inject lubricating oil into the oil inlet 3, and the oil can be discharged to the surface of the guide pin 10 through the oil drain hole 1. As the valve plate opens and closes, the plate sleeved with the guide pin 10 will push the lubricating oil to the outer surface of the guide pin 10, thus achieving lubrication. After the lubrication maintenance is completed, the maintenance personnel can re-thread the threaded head 5 to the threaded opening 4, so that the plug 6 re-seals the oil inlet 3.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A valve guide pin, comprising a guide pin (10), an oil drain hole (1), and an oil inlet (3), characterized in that, It also includes a threaded opening (4), a threaded head (5) and a plug (6). The top of one side of the guide pin (10) is provided with an oil drain hole (1). The top of the guide pin (10) is provided with a threaded opening (4). The bottom of the threaded opening (4) is provided with an oil filling port (3). The oil filling port (3) is connected to the oil drain hole (1). The threaded opening (4) is threaded with a corresponding threaded head (5). The bottom of the threaded head (5) is provided with a plug (6) corresponding to the oil filling port (3).

2. A valve guide pin according to claim 1, characterized in that: The threaded head (5) has an internal hexagonal hole (9) at its top.

3. A valve guide pin according to claim 1, characterized in that: The guide pin (10) is provided with an integral flange ring (2) on its top periphery, and mounting holes (8) are provided at equal intervals on the flange ring (2).

4. A valve guide pin according to claim 1, characterized in that: A rubber sealing ring (7) is provided between the threaded head (5) and the threaded opening (4).

5. A valve guide pin according to claim 1, characterized in that: The diameter of the oil inlet (3) is smaller than that of the threaded inlet (4).

Images