Manual adjustment stop valve

Abstract

The utility model belongs to the technical field of stop valves, and particularly relates to a manual adjustment stop valve which comprises a valve body. The surface of the valve body is fixedly connected with a connecting clamping cylinder; the surface of the connecting clamping cylinder is in threaded connection with a sealing cover; the surface of the sealing cover is in sliding connection with a half-thread sliding rod. The bottom end of the half-thread sliding rod is fixedly connected with a stop block. A half-thread sliding rod is arranged to slide on a sealing cover, a fixing clamping ring is arranged on the surface of the half-thread sliding rod, and a high-elasticity compression spring is matched with the fixing clamping ring to drive a stop block to move downwards, so that the blocking effect is achieved; the half-thread sliding rod is pulled to move the cut-off stop block up and down, so that the effects of blocking and dredging are achieved, the problems that a certain time is needed for rotating the spinning roller, cut-off cannot be completed in time, and the final fluid amount is not accurate enough are solved, and the use adaptability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of globe valves, and specifically relates to a manually adjustable globe valve. Background Art

[0002] A globe valve is a common industrial valve used to control the flow of fluid in a pipeline. The function of a globe valve is to control the flow of fluid by opening or closing the valve. This type of valve is usually used in situations where fluid interruption is required in the pipeline, rather than regulating the flow rate of the fluid.

[0003] A Chinese patent with the publication number CN204004476U discloses a manually adjustable globe valve, which includes a valve body, a screw rod, a sealing cover, a magnetic wheel, and a rotating wheel; a valve core is embedded in one end cavity of the screw rod, the other end of the screw rod is connected to the magnetic wheel, and magnetic steels are embedded around the wheel body of the magnetic wheel. A sealing cover is installed above the valve body, and the screw rod and the magnetic wheel are sealed inside the sealing cover. A rotating wheel is installed on the outer shaft of the sealing cover, and magnetic steels are embedded inside the lower part of the rotating wheel. When adjusting the rotating wheel, the magnetic coupling force causes the magnetic wheel inside the sealing cover to rotate simultaneously, driving the screw rod to rotate to adjust the opening of the valve. The utility model cancels the packing seal of the screw rod, changes the dynamic seal into a static seal of the sealing cover, has reliable sealing, long service life, and can achieve zero leakage. By canceling the pressed packing, the screw rod rotates easily and the opening is labor-saving. Axial and circumferential scales are respectively engraved on the outer side surface of the sealing cover and the lower edge of the rotating wheel, and the scale indication indicates the moving position of the rotating wheel, which can visually display the opening size of the valve.

[0004] As described above, the patent provides a manually adjustable globe valve. Although the pressed packing is cancelled, the screw rod rotates easily and the opening is labor-saving, but in some operations, not only the amount of fluid flowing each time needs to be highly accurate, but also the liquid taking work needs to be continuously completed. Then, it is necessary to continuously control the interruption of the fluid, and controlling the interruption of the fluid requires rotating the rotating wheel, which is relatively troublesome to operate. At the same time, rotating the rotating wheel also takes a certain amount of time and cannot complete the interception in time, resulting in inaccurate final fluid volume and low work adaptability.

[0005] Therefore, a manually adjustable globe valve is proposed to solve the above problems. Summary of the Utility Model

[0006] In order to make up for the deficiencies of the prior art and solve the above problems, a manually adjustable globe valve is proposed.

[0007] The technical solution adopted by the present utility model to solve its technical problems is as follows: A manual adjustment globe valve described in the present utility model includes a valve body; a connecting cartridge is fixedly connected to the surface of the valve body; a sealing cover is threadedly connected to the surface of the connecting cartridge; a semi-threaded sliding rod is slidably connected to the surface of the sealing cover; a cut-off stopper is fixedly connected to the bottom end of the semi-threaded sliding rod; a sliding cavity is formed on the surface of the sealing cover; a fixed clamping ring is fixedly connected to the surface of the semi-threaded sliding rod inside the sliding cavity; a high-elasticity compression spring is sleeved on the surface of the semi-threaded sliding rod; a positioning nut is threadedly connected to the top end of the semi-threaded sliding rod.

[0008] Preferably, the surface of the fixed clamping ring is slidably connected to the inner wall of the sliding cavity; a fine-tuning cavity is formed at the top of the sliding cavity and on the top of the sealing cover; a soft pad is clamped to the inner wall of the fine-tuning cavity; a fixed pressing ring is fixedly connected to the surface of the semi-threaded sliding rod on the top of the soft pad.

[0009] Preferably, the surface of the semi-threaded sliding rod is slidably connected to the inner wall of the sliding cavity; both ends of the high-elasticity compression spring are fixedly connected to the top of the inner wall of the sliding cavity and the surface of the fixed clamping ring respectively.

[0010] Preferably, one end of the semi-threaded sliding rod penetrates through the sealing cover and extends to the top of the sealing cover; the surface of the semi-threaded sliding rod located at the top of the sealing cover is threadedly connected to the surface of the positioning nut; a pulling block is fixedly connected to the top end of the semi-threaded sliding rod.

[0011] Preferably, a sealing ring is sleeved between the surface of the sealing cover and the top of the connecting cartridge; a cut-off baffle is fixedly connected to the inner wall of the valve body; a flow-through port is formed on the surface of the cut-off baffle.

[0012] Preferably, connecting threads are formed on the inner walls on both sides of the valve body; connecting flanges are fixedly connected to both sides of the valve body.

[0013] Advantages of the present utility model:

[0014] The present utility model provides a manual adjustment globe valve. By setting the semi-threaded sliding rod to slide on the sealing cover, a fixed clamping ring is provided on the surface of the semi-threaded sliding rod. The high-elasticity compression spring cooperates with the fixed clamping ring to drive the cut-off stopper to move downward, thereby achieving the blocking effect. When adjustment is required, the positioning nut is rotated to the topmost end of the semi-threaded sliding rod, and the semi-threaded sliding rod is pulled to move the cut-off stopper up and down, thereby achieving the blocking and dredging effects, avoiding the problem that it also takes a certain amount of time to rotate the rotary wheel and the final amount of fluid cannot be accurately intercepted in time, and improving the adaptability of use. Description of the drawings

[0015] The accompanying drawings described herein are used to provide a further understanding of the present utility model and form a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and shall not constitute an improper limitation to the present utility model. In the drawings:

[0016] Figure 1 is a perspective view of the present utility model;

[0017] Figure 2 is a perspective view of the valve body in the present utility model;

[0018] Figure 3 is a sectional view of the internal structure of the present utility model;

[0019] Figure 4 is a sectional view of the present utility model;

[0020] Figure 5 is a perspective view of a part of the structure in the present utility model;

[0021] Legend description:

[0022] 1. Valve body; 2. Connecting clamping cylinder; 3. Sealing cover; 4. Half-threaded sliding rod; 5. Cut-off stop block; 6. Sliding cavity; 7. Fixed snap ring; 8. High-elasticity compression spring; 9. Positioning nut; 10. Fine-tuning cavity; 11. Soft pad; 12. Fixed pressing ring; 13. Pulling block; 14. Sealing ring; 15. Cut-off baffle; 16. Flow-through port; 17. Connecting thread; 18. Connecting flange. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] The following gives specific embodiments.

[0025] Please refer to Figure 1 - Figure 5, the present utility model provides a manually adjustable stop valve, comprising a valve body 1; a connecting cartridge 2 is fixedly connected to the surface of the valve body 1; a sealing cover 3 is threadedly connected to the surface of the connecting cartridge 2; a semi-threaded sliding rod 4 is slidably connected to the surface of the sealing cover 3; a stop block 5 is fixedly connected to the bottom end of the semi-threaded sliding rod 4; a sliding cavity 6 is formed on the surface of the sealing cover 3; a fixed retaining ring 7 is fixedly connected to the surface of the semi-threaded sliding rod 4 inside the sliding cavity 6; a high-elasticity compression spring 8 is sleeved on the surface of the semi-threaded sliding rod 4; a positioning nut 9 is threadedly connected to the top end of the semi-threaded sliding rod 4; during operation, the connecting cartridge 2 is fixed to the surface of the valve body 1, the sealing cover 3 is threadedly connected to the surface of the connecting cartridge 2, and the semi-threaded sliding rod 4 slides on the surface of the sealing cover 3. When intercepting the flow, a high-elasticity compression spring 8 is provided, and the elasticity can avoid the impact of water flow. The high-elasticity compression spring 8 drives the fixed retaining ring 7 to slide up and down in the sliding cavity 6. The fixed retaining ring 7 is fixed to the semi-threaded sliding rod 4 to drive the semi-threaded sliding rod 4 to move downward, and then the stop block 5 is moved downward to complete the blocking function. The positioning nut 9 fixes the position of the semi-threaded sliding rod 4. When no blocking and adjustment are required and the fluid is allowed to flow freely, the semi-threaded sliding rod 4 is pulled upward, and then the positioning nut 9 is rotated. At this time, the positioning nut 9 is stuck on the sealing cover 3 to offset the elastic force of the high-elasticity compression spring 8. At this time, the stop block 5 no longer moves downward. In some operations, when it is necessary to ensure a high accuracy of the amount of fluid flowing each time and continuous liquid extraction work needs to be completed, the positioning nut 9 is rotated to the top end of the semi-threaded sliding rod 4, and the semi-threaded sliding rod 4 is pulled to move the stop block 5 up and down, thereby realizing the functions of blocking and dredging, avoiding the problem that it also takes a certain amount of time to rotate the rotary wheel and the interception cannot be completed in time, resulting in inaccurate final fluid volume, and improving the adaptability of use.

[0026] Further, as Figure 3 , Figure 4 and Figure 5As shown in the figure, the surface of the fixed snap ring 7 is slidably connected to the inner wall of the sliding cavity 6; a fine-tuning cavity 10 is provided at the top of the sliding cavity 6 and located at the top of the sealing cover 3; a soft pad 11 is clamped to the inner wall of the fine-tuning cavity 10; a fixed pressing ring 12 is fixedly connected to the surface of the semi-threaded slide bar 4 and located at the top of the soft pad 11; the surface of the semi-threaded slide bar 4 is slidably connected to the inner wall of the sliding cavity 6; both ends of the high-elasticity compression spring 8 are fixedly connected to the top of the inner wall of the sliding cavity 6 and the surface of the fixed snap ring 7 respectively. During operation, the fixed snap ring 7 can slide on the inner wall of the sliding cavity 6. The soft pad 11 and the fixed pressing ring 12 are arranged inside the fine-tuning cavity 10, and the fixed pressing ring 12 is fixed on the semi-threaded slide bar 4. When adjusting, the fixed pressing ring 12 will slide up and down, and the soft pad 11 buffers and protects the fixed pressing ring 12. Both ends of the high-elasticity compression spring 8 are respectively fixed to the top of the inner wall of the sliding cavity 6 and the surface of the fixed snap ring 7, enabling it to normally squeeze the fixed snap ring 7 and drive the cut-off stop block 5 to move downward, ensuring the stability of the operation.

[0027] Further, as Figure 2 , Figure 3 and Figure 4 shown, one end of the semi-threaded slide bar 4 penetrates through the sealing cover 3 and extends to the top of the sealing cover 3; the surface of the semi-threaded slide bar 4 located at the top of the sealing cover 3 is threadedly connected to the surface of the positioning nut 9; a pull block 13 is fixedly connected to the top end of the semi-threaded slide bar 4; a sealing ring 14 is sleeved between the surface of the sealing cover 3 and the top of the connecting cartridge 2; a cut-off baffle 15 is fixedly connected to the inner wall of the valve body 1; a flow-through port 16 is provided on the surface of the cut-off baffle 15; connecting threads 17 are provided on the inner walls on both sides of the valve body 1; connecting flanges 18 are fixedly connected to both sides of the valve body 1. During operation, the top end of the semi-threaded slide bar 4 penetrates through the sealing cover 3, and the surface of the top end of the semi-threaded slide bar 4 is threadedly connected to the surface of the positioning nut 9. The pull block 13 facilitates pulling up the semi-threaded slide bar 4. The sealing ring 14 seals the inside. The cut-off baffle 15 guides the internal fluid. The cut-off function is realized by the cooperation of the flow-through port 16 and the cut-off stop block 5. When the cut-off stop block 5 is stuck on the flow-through port 16, it can be blocked, thus realizing the cut-off function.

[0028] Working principle: Since the above patent provides a manually adjustable globe valve, although the packing that is pressed tightly is removed, the screw rotates easily and it is labor-saving to open, but in some operations, not only the amount of flowing fluid each time needs to be highly accurate, but also the liquid taking operation needs to be completed continuously. Then it is necessary to continuously control the interruption of the fluid, and controlling the interruption of the fluid requires rotating the rotary wheel, which is rather troublesome to operate. At the same time, rotating the rotary wheel also takes a certain amount of time and it is impossible to complete the throttling in time, resulting in inaccurate final fluid volume and low work adaptability. During operation, the connecting cartridge 2 is fixed on the surface of the valve body 1, the sealing cover 3 is threadedly connected to the surface of the connecting cartridge 2, and the semi-threaded slide rod 4 slides on the surface of the sealing cover 3. When throttling, a high-elasticity compression spring 8 is provided, and this elasticity can avoid the impact of water flow. The high-elasticity compression spring 8 drives the fixed clamping ring 7 to slide up and down in the sliding cavity 6. The fixed clamping ring 7 is fixed to the semi-threaded slide rod 4 to drive the semi-threaded slide rod 4 to move downward, and then move the cutoff block 5 downward to complete the blocking function. The positioning nut 9 fixes the position of the semi-threaded slide rod 4. When blocking is not required and adjustment is not needed and the fluid is allowed to flow freely, the semi-threaded slide rod 4 is pulled upward, and then the positioning nut 9 is rotated. At this time, the positioning nut 9 is stuck on the sealing cover 3 to offset the elastic force of the high-elasticity compression spring 8. At this time, the cutoff block 5 no longer moves downward. In some operations, when it is necessary to ensure a high accuracy of the amount of flowing fluid each time and continuously complete the liquid taking operation, the positioning nut 9 is rotated to the top of the semi-threaded slide rod 4, and pulling the semi-threaded slide rod 4 can move the cutoff block 5 up and down, thus realizing the functions of blocking and dredging, avoiding the problem that rotating the rotary wheel also takes a certain amount of time and it is impossible to complete the throttling in time, resulting in inaccurate final fluid volume, and improving the adaptability of use. The fixed clamping ring 7 can slide on the inner wall of the sliding cavity 6. A soft pad 11 and a fixed pressing ring 12 are arranged inside the fine adjustment cavity 10. The fixed pressing ring 12 is fixed on the semi-threaded slide rod 4. When adjusting, the fixed pressing ring 12 will slide up and down, and the soft pad 11 buffers and protects the fixed pressing ring 12. The two ends of the high-elasticity compression spring 8 are respectively fixed to the top of the inner wall of the sliding cavity 6 and the surface of the fixed clamping ring 7, enabling it to normally squeeze the fixed clamping ring 7 and drive the cutoff block 5 to move downward to ensure the stability of the work. The top of the semi-threaded slide rod 4 penetrates through the sealing cover 3, and the surface of the top of the semi-threaded slide rod 4 is threadedly connected to the surface of the positioning nut 9. The pull block 13 facilitates pulling up the semi-threaded slide rod 4. The sealing ring 14 seals the inside, and the cutoff baffle 15 guides the internal fluid. The throttling function is realized by the cooperation of the through-flow port 16 and the cutoff block 5. When the cutoff block 5 is stuck on the through-flow port 16, blocking can be carried out to realize the cutoff function. By setting the semi-threaded slide rod 4 to slide on the sealing cover 3, a fixed clamping ring 7 is provided on the surface of the semi-threaded slide rod 4, and the high-elasticity compression spring 8 is used in cooperation with the fixed clamping ring 7 to drive the cutoff block 5 to move downward, thus realizing the blocking function. When adjustment is required, the positioning nut 9 is rotated to the top of the semi-threaded slide rod 4,Pulling the half-threaded slide rod 4 can move the cut-off block 5 up and down, thereby achieving the functions of blocking and dredging. This avoids the problem that rotating the wheel also takes a certain amount of time and the interception cannot be completed in time, resulting in an inaccurate final fluid volume, and improves the adaptability of use.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A manually adjustable stop valve, characterized in that: The valve body (1) comprises a valve body (1); a connecting cartridge (2) is fixedly connected to the surface of the valve body (1); a sealing cover (3) is threadedly connected to the surface of the connecting cartridge (2); a semi-threaded slide rod (4) is slidably connected to the surface of the sealing cover (3); a stop block (5) is fixedly connected to the bottom end of the semi-threaded slide rod (4); a sliding cavity (6) is provided on the surface of the sealing cover (3); a fixing clamp (7) is fixedly connected inside the sliding cavity (6) and on the surface of the semi-threaded slide rod (4); a high-elasticity compression spring (8) is sleeved on the surface of the semi-threaded slide rod (4); and a positioning nut (9) is threadedly connected to the top end of the semi-threaded slide rod (4).

2. A manually adjustable stop valve according to claim 1, characterized in that: The surface of the fixed clamping ring (7) is slidably connected to the inner wall of the sliding cavity (6); a fine-tuning cavity (10) is provided at the top of the sliding cavity (6) and located at the top of the sealing cover (3); a soft pad (11) is clamped on the inner wall of the fine-tuning cavity (10); and a fixed pressure ring (12) is fixedly connected to the top of the soft pad (11) and located on the surface of the semi-threaded sliding rod (4).

3. A manually adjustable stop valve according to claim 1, characterized in that: The surface of the semi-threaded sliding rod (4) is slidably connected to the inner wall of the sliding cavity (6); the two ends of the high-elasticity compression spring (8) are respectively fixedly connected to the top of the inner wall of the sliding cavity (6) and the surface of the fixed clamping ring (7).

4. A manually adjustable stop valve according to claim 3, characterized in that: One end of the semi-threaded slide rod (4) passes through the sealing cover (3) and extends to the top of the sealing cover (3); the surface of the semi-threaded slide rod (4) located at the top of the sealing cover (3) is threadedly connected to the surface of the positioning nut (9); and the top end of the semi-threaded slide rod (4) is fixedly connected to a pull block (13).

5. A manually adjustable stop valve according to claim 4, characterized in that: A sealing ring (14) is sleeved between the surface of the sealing cover (3) and the top of the connecting cartridge (2); a stop baffle (15) is fixedly connected to the inner wall of the valve body (1); and a flow opening (16) is formed on the surface of the stop baffle (15).

6. A manually adjustable stop valve according to claim 5, characterized in that: The inner walls of both sides of the valve body (1) are provided with connecting threads (17); and both sides of the valve body (1) are fixedly connected with connecting flanges (18).

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