Y-shaped stop valve body

Abstract

The utility model relates to the field of valve devices, and discloses a Y-shaped stop valve body which comprises a water inlet through valve, the top of the water inlet through valve is fixedly connected with a stop valve channel, the top of the inner side of the stop valve channel is fixedly connected with a lubricating cavity, the outer side of the lubricating cavity is connected with a limiting block through a bolt, a lead screw is arranged in the stop valve channel, and the limiting block is connected with a nut. A water inlet through valve is arranged in the outer cavity, flange plates are arranged at the two ends of the water inlet through valve, the water inlet through valve is connected with a pipeline through the two flange plates, a piston plate is slidably connected to the interior of the outer cavity, a handle is fixedly connected to the top of the piston plate, and a tension spring is arranged between the piston plate and the inner bottom wall of the outer cavity. The piston disc slides in the outer cavity, negative pressure is generated in the outer cavity, the lubricating oil tank is pumped into the outer cavity, the three-way valve is controlled to inject lubricating oil upwards into the oil injection cavity, the service life of equipment is prolonged, the three-way valve can be controlled to inject the lubricating oil downwards into the annular air bag, and the air tightness between the two flange plates is improved.

Description

Technical Field

[0001] This utility model relates to the field of valve devices, and more particularly to a Y-type shut-off valve body. Background Technology

[0002] Y-type gate valves are common fluid control devices widely used in chemical, petroleum, natural gas, water supply, and HVAC industries. Their main function is to open and close the fluid flow by raising and lowering the valve disc, offering excellent sealing performance and flow regulation capabilities. The structure of a Y-type gate valve typically includes a valve body, valve disc, valve stem, and sealing ring. The valve disc moves up and down within the valve body, thereby controlling the fluid flow. This design allows Y-type gate valves to operate stably under high pressure and high temperature environments, making them suitable for various operating conditions.

[0003] However, existing Y-type gate valves suffer damage due to friction between the valve disc and the lead screw during long-term operation. This friction is mainly caused by the combined effect of the valve disc's weight and the fluid's flow resistance, resulting in significant wear on the contact surface between the valve disc and the lead screw. Over time, this friction-induced wear leads to a decrease in the valve disc's sealing performance and may even cause leakage in the valve body, thus affecting the normal operation and safety of the system.

[0004] To address the above issues, a Y-type shut-off valve body is proposed. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a Y-type shut-off valve body, which aims to solve the problem that the contact surface between the valve disc and the lead screw suffers significant wear due to the combined effect of the valve disc's gravity and the fluid's flow resistance.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a Y-type shut-off valve body, comprising:

[0007] The inlet valve has a stop valve channel fixedly connected to its top, a lubrication chamber fixedly connected to the top inner side of the stop valve channel, a limit block connected to the outer side of the lubrication chamber by bolts, a threaded rod inside the stop valve channel, flanges installed at both ends of the inlet valve, and the inlet valve connected to the pipeline through two flanges. An airtight component for increasing the sealing of the pipeline connection is provided between the two flanges.

[0008] A lubrication assembly, used to inject lubricating oil into the lubrication chamber to reduce equipment wear, is installed outside the water inlet valve. The lubrication assembly includes a lubricating oil tank, an outer cavity connected to the top of the lubricating oil tank via a hose, a piston disc slidably connected inside the outer cavity, a handle fixedly connected to the top of the piston disc, a tension spring installed between the piston disc and the inner bottom wall of the outer cavity, a three-way valve provided on the outside of the outer cavity, the input end of the three-way valve connected to the inside of the outer cavity via a flexible pipe, and the two input ends of the three-way valve connected to an oil inlet and an air inlet respectively via hoses.

[0009] As a further description of the above technical solution:

[0010] The airtight assembly includes an annular airbag installed inside the two flanges, with an air inlet mounted on the top of the annular airbag.

[0011] As a further description of the above technical solution:

[0012] The outer side of the lead screw is slidably connected to the inside of the lubrication chamber, and a turntable is fixedly connected to the top of the lead screw.

[0013] As a further description of the above technical solution:

[0014] The lubrication chamber has an oil injection chamber on its inner side and an oil inlet on its side wall.

[0015] As a further description of the above technical solution:

[0016] A fixing ring is fitted on the outer side of the outer cavity, and the outer side of the fixing ring is fixedly connected to the side wall of the shut-off valve passage. A sealing ring is fixedly connected to the top of the inner side of the outer cavity.

[0017] As a further description of the above technical solution:

[0018] A support frame is provided at the top of the shut-off valve channel, the outer side of the lead screw is threaded to the top of the support frame, and a shut-off valve disc is installed at the bottom of the lead screw.

[0019] As a further description of the above technical solution:

[0020] A rotary switch is installed on the outside of the three-way valve, which can control the lubricating oil to flow upward into the lubrication chamber or downward into the annular air bladder.

[0021] As a further description of the above technical solution:

[0022] A one-way valve is installed on the hose between the lubricating oil tank and the outer cavity to control the lubricating oil to flow only upwards.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, in order to reduce the wear of the lead screw and valve disc, a lubrication component can be used to inject lubricating oil into the lubrication chamber. Simply pull the handle upward, and the piston disc in the outer chamber will slide upward. After generating negative pressure, the lubricating oil will be drawn into the outer chamber. Then, press the handle downward to inject the lubricating oil into the three-way valve. Control the three-way valve to inject the lubricating oil into the lubrication chamber upward, so as to effectively lubricate the lead screw and valve disc.

[0025] 2. In this utility model, the control three-way valve injects air into the inlet through a hose, and the lubricating oil fills the annular air bladder, which can effectively increase the sealing between the flanges and ensure the efficiency of pipeline transportation. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the Y-type shut-off valve body proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the lubrication chamber of the Y-type shut-off valve body proposed in this utility model;

[0028] Figure 3 for Figure 1 A magnified view of middle A;

[0029] Figure 4 This is a schematic diagram of the tension spring structure of the Y-type shut-off valve body proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the annular airbag structure of the Y-type shut-off valve body proposed in this utility model;

[0031] Legend:

[0032] 1. Water inlet valve; 2. Shut-off valve channel; 3. Screw; 4. Limit block; 5. Flange; 6. Turntable; 7. Lubrication chamber; 8. Oil injection chamber; 9. Oil inlet; 10. Lubricating oil tank; 11. Three-way valve; 12. Outer cavity; 13. Handle; 14. Retaining ring; 15. Sealing ring; 16. Piston disc; 17. Tension spring; 18. Air inlet; 19. Annular airbag. Detailed Implementation

[0033] 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.

[0034] Reference Figure 1 - Figure 5 One embodiment of this utility model provides: a Y-type shut-off valve body, comprising:

[0035] The inlet valve 1 has a stop valve channel 2 fixedly connected to its top. A lubrication chamber 7 is fixedly connected to the top inner side of the stop valve channel 2. A limit block 4 is bolted to the outer side of the lubrication chamber 7. A threaded rod 3 is installed inside the stop valve channel 2. Flanges 5 are installed at both ends of the inlet valve 1. The inlet valve 1 is connected to the pipeline through two flanges 5. An airtight component for increasing the sealing of the pipeline connection is provided between the two flanges 5.

[0036] A lubrication assembly, used to inject lubricating oil into the lubrication chamber 7 to reduce equipment wear, is installed outside the water inlet valve 1. The lubrication assembly includes a lubricating oil tank 10, with an outer cavity 12 connected to the top of the lubricating oil tank 10 via a hose. A piston disc 16 is slidably connected inside the outer cavity 12, and a handle 13 is fixedly connected to the top of the piston disc 16. A tension spring 17 is installed between the piston disc 16 and the inner bottom wall of the outer cavity 12. A three-way valve 11 is provided on the outside of the outer cavity 12. The input end of the three-way valve 11 is connected to the inside of the outer cavity 12 via a flexible pipe. The two input ends of the three-way valve 11 are respectively connected to an oil inlet 9 and an air inlet 18 via hoses. An airtight assembly includes an annular airbag 19, installed inside the two flanges 5. An air inlet 18 is installed on the top of the annular airbag 19. The outer side of the lead screw 3 is slidably connected to the inside of the lubrication chamber 7. A turntable 6 is fixedly connected to the top of the lead screw 3. An oil injection chamber 8 is opened on the inner side of the lubrication chamber 7. An oil inlet 9 is opened on the side wall of the lubrication chamber 7. A fixing ring 14 is sleeved on the outer side of the outer cavity 12. The outer side of the fixing ring 14 is fixedly connected to the side wall of the shut-off valve passage 2. A sealing ring 15 is fixedly connected to the top of the inner side of the outer cavity 12. A support frame is provided on the top of the shut-off valve passage 2. The outer side of the lead screw 3 is threadedly connected to the top of the support frame. A shut-off valve flap is installed at the bottom of the lead screw 3. A rotary switch is installed on the outer side of the three-way valve 11, which can control the lubricating oil to flow upward into the lubrication chamber 7 or downward into the annular air bag 19. A one-way valve is installed on the hose between the lubricating oil tank 10 and the outer cavity 12 to control the lubricating oil to flow upward only.

[0037] Specifically, in this embodiment, a shut-off valve channel 2 is fixedly connected to the top of the inlet valve 1. A lead screw 3 is installed inside the shut-off valve channel 2. A lubrication chamber 7 is fixedly connected to the top inner side of the shut-off valve channel 2. A limit block 4 is bolted to the outside of the lubrication chamber 7. A shut-off valve disc is installed at the bottom of the lead screw 3. In use, since the outside of the lead screw 3 is threadedly connected to the support frame at the top of the shut-off valve channel 2, the valve disc at the bottom of the lead screw 3 can be moved by rotating the turntable 6. A lubricating oil tank 10 is installed on the outside of the shut-off valve channel 2. The lubricating oil tank 10 is connected upward to the bottom of the outer cavity 12 through a hose. The user can pull the handle 13 upward to drive the piston disc 16 below the handle 13 to slide upward, thereby generating negative pressure in the outer cavity 12. A one-way valve is installed on the hose between the lubricating oil tank 10 and the outer cavity 12. The valve draws lubricating oil from the lubricating oil tank 10 into the outer cavity 12. A three-way valve 11 is installed on the outside of the outer cavity 12. A one-way valve is also installed between the outer cavity 12 and the three-way valve 11 to restrict the flow of lubricating oil. By controlling the conduction direction of the three-way valve 11, lubricating oil is sent into the lubrication chamber 7 or the air inlet 18. Specifically, lubricating oil can enter the oil injection chamber 8 through the oil inlet 9 to reduce the friction force on the lead screw 3 when it slides inside the lubrication chamber 7. It can also enter the annular air bag 19. Since the water inlet valve 1 and the water supply pipeline are connected by two flanges 5, a groove is opened between the two flanges 5 and the annular air bag 19 is placed in order to ensure the sealing between them. The lubricating oil enters the annular air bag 19, which enhances the airtightness of the connection between the shut-off valve 2 and the water supply pipeline.

[0038] Working principle: Since the opening and closing of the valve body requires the valve disc and screw 3 to move in the shut-off valve passage 2, the equipment will inevitably suffer wear due to friction. In order to reduce the friction force on the equipment, the lubrication component can effectively reduce this situation. The user needs to pull the handle 13 upward. Since the piston disc 16 is tightly attached to the inner wall of the outer cavity 12, the upward movement of the piston disc 16 will cause a negative pressure inside the outer cavity 12, drawing the lubricating oil in the lubricating oil tank 10 into the outer cavity 12. The outer cavity 12 is connected to the three-way valve 11 through a hose. At this time, the flow direction of the lubricating oil can be controlled by the three-way valve 11. It can be injected upward into the oil filling chamber 8, or the lubricating oil can flow downward along the inner wall of the shut-off valve passage 2. It can also be injected downward into the annular air bag 19 through the hose, enhancing the airtightness of the connection between the two flanges 5.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 Y-type shut-off valve body, characterized in that, include: The inlet valve (1) has a stop valve channel (2) fixedly connected to its top. A lubrication chamber (7) is fixedly connected to the top of the inner side of the stop valve channel (2). A limit block (4) is bolted to the outer side of the lubrication chamber (7). A screw rod (3) is installed inside the stop valve channel (2). Flanges (5) are installed at both ends of the inlet valve (1). The inlet valve (1) is connected to the pipeline through two flanges (5). An airtight component for increasing the sealing of the pipeline connection is provided between the two flanges (5). A lubrication assembly for injecting lubricating oil into the lubrication chamber (7) to reduce wear of the equipment is installed on the outside of the water inlet valve (1). The lubrication assembly includes a lubricating oil tank (10). An outer cavity (12) is connected to the top of the lubricating oil tank (10) via a hose. A piston disc (16) is slidably connected inside the outer cavity (12). A handle (13) is fixedly connected to the top of the piston disc (16). A tension spring (17) is installed between the piston disc (16) and the inner bottom wall of the outer cavity (12). A three-way valve (11) is provided on the outside of the outer cavity (12). The input end of the three-way valve (11) is connected to the inside of the outer cavity (12) via a flexible pipe. The two input ends of the three-way valve (11) are connected to the oil inlet (9) and the air inlet (18) via hoses, respectively.

2. The Y-type shut-off valve body according to claim 1, characterized in that: The airtight assembly includes an annular airbag (19) which is installed inside the two flanges (5) and has an air inlet (18) on its top.

3. The Y-type shut-off valve body according to claim 1, characterized in that: The outer side of the lead screw (3) is slidably connected to the inside of the lubrication chamber (7), and a turntable (6) is fixedly connected to the top of the lead screw (3).

4. The Y-type shut-off valve body according to claim 1, characterized in that: The lubrication chamber (7) has an oil injection chamber (8) on its inner side and an oil inlet (9) on its side wall.

5. The Y-type shut-off valve body according to claim 1, characterized in that: A fixing ring (14) is fitted on the outer side of the outer cavity (12), and the outer side of the fixing ring (14) is fixedly connected to the side wall of the shut-off valve passage (2). A sealing ring (15) is fixedly connected to the top of the inner side of the outer cavity (12).

6. The Y-type shut-off valve body according to claim 1, characterized in that: The top of the shut-off valve channel (2) is provided with a support frame, the outer side of the screw (3) is threaded to the top of the support frame, and the bottom of the screw (3) is equipped with a shut-off valve disc.

7. The Y-type shut-off valve body according to claim 1, characterized in that: A rotary switch is installed on the outside of the three-way valve (11) to control the lubricating oil to flow upward into the lubrication chamber (7) or downward into the annular airbag (19).

8. The Y-type shut-off valve body according to claim 1, characterized in that: A one-way valve is installed on the hose between the lubricating oil tank (10) and the outer cavity (12) to control the lubricating oil to flow only upwards.

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