Stop valve capable of conveniently adjusting flow

Abstract

The utility model discloses a stop valve convenient to adjust flow, and belongs to the technical field of valves, the stop valve convenient to adjust flow comprises a shell and a connecting hole, the surface of the shell is provided with a first through hole, and the surface of the shell is provided with a second through hole. When the pressure of the sealing plug is adjusted, a user pulls the handle to enable the handle to rotate to a specified angle, and the rotating center of the handle is slightly lower, so that the sliding rod is driven to float up and down under the action of the spring in the rotating process, and the pressure of the sealing plug on the connecting hole is changed; the sealing plug can be pushed by pressure to open the connecting hole to enable the medium to flow out, so that the system pressure is reduced, and when the pressure is reduced to be below a set value, the spring can close the sealing plug to keep the medium in the system, and meanwhile, the opening pressure of the valve can be finely adjusted to adapt to different working environments and conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and more specifically to a stop valve which is convenient for adjusting flow. Background Art

[0002] The stop valve, also called the gate valve, is one of the most widely used valves, which is suitable not only for medium and low pressure, but also for high pressure. The closing principle of the stop valve is: relying on the valve stem pressure, the valve disc sealing surface and the valve body sealing surface are closely fitted to prevent the flow of the medium. Based on this, this type of valve is widely used in many industries such as petroleum, chemical industry, and food. However, this type of valve also has some disadvantages and inconveniences when used in certain occasions, which are mainly reflected in several aspects. The original manual and electric stop valves have a slow closing speed. Although the closing speed of the pneumatic stop valve is fast, it requires a gas source for a long time, resulting in a complex structure and inconvenient adjustment. Utility Model Content

[0003] (1) Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a stop valve that is easy to adjust the flow rate and has the characteristic of being easy to adjust.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides a stop valve for adjusting flow rate, comprising a shell and a connecting hole, a first through hole is provided on the surface of the shell, a second through hole is provided on the surface of the shell, and the first through hole and the second through hole are connected through the connecting hole, a threaded barrel is threadedly connected to the surface of the shell, a connecting block is symmetrically fixedly connected to the upper surface of the threaded barrel, a handle is movably connected to the surface of the connecting block through a pin shaft, and the position of the pin shaft is located below the rotation center of the handle, an inner barrel is fixedly connected to the inner wall of the threaded barrel, a sliding rod is movably connected to the surface of the inner barrel, a fixing ring is fixedly connected to the lower surface of the sliding rod, a spring is clamped on the lower surface of the fixing ring, and a sliding barrel is slidably connected to the surface of the inner barrel;

[0007] The threaded cylinder, the connecting block, the handle, the inner cylinder and the sealing plug form a spiral transmission mechanism, which moves up and down with the sliding cylinder and the sealing plug, and the handle is rotated by external output power to provide power for the lifting and lowering of the inner cylinder and the sliding cylinder;

[0008] The handle, inner cylinder, spring, slide cylinder and sealing plug form a pressure regulating mechanism, which regulates the pressure of the slide cylinder and the sealing plug.

[0009] When using a stop valve that is easy to adjust the flow rate of the present technical solution, the handle is pulled to rotate it to a specified angle. The rotation center of the handle is biased downward, so the slide rod is driven up and down by the action of the spring during rotation, thereby changing the pressure of the sealing plug on the connecting hole. When the pressure in the system exceeds the set value, the sealing plug will be pushed by the pressure to open the connecting hole, allowing the medium to flow out, thereby reducing the system pressure. When the pressure drops below the set value, the spring will close the sealing plug to keep the medium in the system. At the same time, the opening pressure of the valve can be fine-tuned to adapt to different working environments and conditions.

[0010] Furthermore, the slide is movably connected to the surface of the first through hole, a slot is provided at the bottom end of the slide, the other end of the spring is clamped in the slot, a sealing plug is fixedly connected to the lower surface of the slide, and the sealing plug is clamped and sealed with the connecting hole.

[0011] Furthermore, the upper surface of the shell is fixedly connected to a limit plate by screws.

[0012] Furthermore, the upper surface of the shell is fixedly connected with limiting bolts.

[0013] Furthermore, the handle is overlapped on the surface of the limiting bolt.

[0014] (3) Beneficial effects

[0015] In summary, the utility model has the following beneficial effects:

[0016] 1. The stop valve, which is convenient for adjusting flow, is provided with a handle, a slide bar, a fixing ring, a spring, an inner tube and a slide tube. When adjusting the pressure of the sealing plug, people turn the handle to make it rotate to a specified angle. The rotation center of the handle is biased downward, so the slide bar is driven to float up and down under the action of the spring during the rotation process, so that the pressure of the sealing plug on the connecting hole changes. When the pressure in the system exceeds the set value, the sealing plug will be pushed by the pressure to open the connecting hole to allow the medium to flow out, thereby reducing the system pressure. When the pressure drops below the set value, the spring will close the sealing plug to keep the medium in the system. At the same time, the opening pressure of the valve can be fine-tuned to adapt to different working environments and conditions.

[0017] 2. The stop valve that is convenient for adjusting flow rate is provided with a threaded barrel, a connection block and a handle. When opening the connection hole, people drive the threaded barrel to rotate by pulling the handle and move it upward, so that the inner barrel and the sealing plug move upward, thereby adjusting the closing degree of the connection hole, so as to control the flow rate of the medium. Under the action of the threaded barrel, the connection block and the handle, it is more convenient for people to adjust the flow rate of the medium;

[0018] 3. The stop valve which is easy to adjust the flow rate is provided with a limit plate and a limit bolt. When the pressure of the sealing plug is finely adjusted, the limit plate and the limit bolt can support and limit the handle to avoid damage caused by excessive rotation. Under the action of the limit plate and the limit bolt, the protectiveness of the device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for describing the specific implementation or the prior art will be briefly introduced below. Obviously, the drawings described below are only one implementation of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the utility model.

[0023] The symbols in the accompanying drawings are:

[0024] 1. Outer shell; 2. First channel; 3. Threaded cylinder; 4. Connecting block; 5. Handle; 6. Inner cylinder; 7. Slide rod; 8. Fixing ring; 9. Spring; 10. Slide cylinder; 11. Slot; 12. Sealing plug; 13. Limiting plate; 14. Limiting bolt; 15. Second channel; 16. Connecting hole. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the technical scheme in the specific implementation mode of the utility model is clearly and completely described below to further illustrate the utility model. Obviously, the specific implementation mode described is only a part of the implementation mode of the utility model, not all styles.

[0026] Example:

[0027] The following is combined with Figure 1-3 The utility model is described in further detail.

[0028] See also Figure 1-3The utility model provides a technical solution: a stop valve for adjusting flow, comprising a shell 1 and a connecting hole 16, a first through hole is provided on the surface of the shell 1, a second through hole is provided on the surface of the shell 1, and the first through hole and the second through hole are connected through the connecting hole 16, a threaded barrel 3 is threadedly connected to the surface of the shell 1, a connecting block 4 is symmetrically fixedly connected to the upper surface of the threaded barrel 3, a handle 5 is movably connected to the surface of the connecting block 4 through a pin shaft, and the position of the pin shaft is located at a position slightly below the rotation center of the handle 5, an inner barrel 6 is fixedly connected to the inner wall of the threaded barrel 3, a sliding rod 7 is movably connected to the surface of the inner barrel 6, a fixing ring 8 is fixedly connected to the lower surface of the sliding rod 7, a spring 9 is clamped on the lower surface of the fixing ring 8, and a sliding barrel 10 is slidably connected to the surface of the inner barrel 6;

[0029] The threaded cylinder 3, the connecting block 4, the handle 5, the inner cylinder 6 and the sealing plug 12 form a spiral transmission mechanism, which moves up and down with the slide cylinder 10 and the sealing plug 12. The handle 5 is rotated by the external output power to provide power for the lifting of the inner cylinder 6 and the slide cylinder 10.

[0030] The handle 5 , the inner tube 6 , the spring 9 , the slide tube 10 and the sealing plug 12 form a pressure regulating mechanism, which regulates the pressure of the slide tube 10 and the sealing plug 12 .

[0031] By adopting the above technical solution, by providing the threaded barrel 3, the connecting block 4, and the handle 5, when opening the connecting hole 16, people drive the threaded barrel 3 to rotate and move it upward by pulling the handle 5, so that the inner barrel 6 and the sealing plug 12 move upward, thereby adjusting the closing degree of the connecting hole 16 to control the flow rate of the medium. Under the action of the threaded barrel 3, the connecting block 4, and the handle 5, it is easier for people to adjust the flow rate of the medium.

[0032] Specifically, the slide 10 is movably connected to the surface of the first through hole, a slot 11 is provided at the bottom end of the slide 10, the other end of the spring 9 is clamped in the slot 11, and a sealing plug 12 is fixedly connected to the lower surface of the slide 10, and the sealing plug 12 is clamped and sealed with the connecting hole 16.

[0033] By adopting the above technical solution, by setting the handle 5, the slide bar 7, the fixing ring 8, the spring 9, the inner cylinder 6 and the slide cylinder 10, when adjusting the pressure of the sealing plug 12, people turn the handle 5 to make it rotate to the specified angle. The rotation center of the handle 5 is biased downward, so during the rotation process, the slide bar 7 is driven up and down by the action of the spring 9, so that the pressure of the sealing plug 12 on the connecting hole 16 changes. When the pressure in the system exceeds the set value, the sealing plug 12 will be pushed by the pressure to open the connecting hole 16, so that the medium can flow out, thereby reducing the system pressure. When the pressure drops below the set value, the spring 9 will close the sealing plug 12 to keep the medium in the system. At the same time, the opening pressure of the valve can be fine-tuned to adapt to different working environments and conditions.

[0034] Specifically, the upper surface of the housing 1 is fixedly connected to a limit plate 13 by screws.

[0035] By adopting the above technical solution, by setting the limit plate 13 and the limit bolt 14, when fine-tuning the pressure of the sealing plug 12, the limit plate 13 and the limit bolt 14 can support and limit the handle 5 to avoid damage caused by excessive rotation. Under the action of the limit plate 13 and the limit bolt 14, the protectiveness of the device is improved.

[0036] Specifically, the upper surface of the housing 1 is fixedly connected with a limiting bolt 14 .

[0037] Specifically, the handle 5 overlaps the surface of the limiting bolt 14 .

[0038] The working principle of the utility model is:

[0039] First, people install the device at the specified position. When it is necessary to adjust the flow rate of the medium, people drive the threaded tube 3 to rotate and move upward by pulling the handle 5, so that the sealing plug 12 moves upward, thereby adjusting the degree of closure of the connecting hole 16 to control the flow rate of the medium. People can pull the handle 5 to make it rotate to a specified angle. The rotation center of the handle 5 is biased downward, so during the rotation process, the slide bar 7 is driven up and down by the action of the spring 9, so that the pressure of the sealing plug 12 on the connecting hole 16 changes. When the pressure in the system exceeds the set value, the sealing plug 12 will be pushed by the pressure to open the connecting hole 16, allowing the medium to flow out, thereby reducing the system pressure. When the pressure drops below the set value, the spring 9 will close the sealing plug 12 to keep the medium in the system. At the same time, the opening pressure of the valve can be fine-tuned to adapt to different working environments and conditions.

[0040] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A stop valve for convenient flow regulation, comprising a housing (1) and a connecting hole (16), characterized in that: A first through hole is provided on the surface of the shell (1), a second through hole is provided on the surface of the shell (1), and the first through hole and the second through hole are connected via a connecting hole (16); a threaded cylinder (3) is threadedly connected to the surface of the shell (1); a connecting block (4) is symmetrically fixedly connected to the upper surface of the threaded cylinder (3); a handle (5) is movably connected to the surface of the connecting block (4) via a pin shaft, and the pin shaft is located below the rotation center of the handle (5); an inner cylinder (6) is fixedly connected to the inner wall of the threaded cylinder (3); a sliding rod (7) is movably connected to the surface of the inner cylinder (6); a fixing ring (8) is fixedly connected to the lower surface of the sliding rod (7); a spring (9) is clamped on the lower surface of the fixing ring (8); and a sliding cylinder (10) is slidably connected to the surface of the inner cylinder (6); The threaded cylinder (3), the connecting block (4), the handle (5), the inner cylinder (6) and the sealing plug (12) form a spiral transmission mechanism, which moves up and down together with the sliding cylinder (10) and the sealing plug (12). The handle (5) is rotated by external output power, thereby providing power for the lifting and lowering of the inner cylinder (6) and the sliding cylinder (10); The handle (5), the inner cylinder (6), the spring (9), the slide cylinder (10) and the sealing plug (12) form a pressure regulating mechanism, which regulates the pressure of the slide cylinder (10) and the sealing plug (12).

2. A stop valve for adjusting flow rate according to claim 1, characterized in that: The slide (10) is movably connected to the surface of the first through hole, a slot (11) is provided at the bottom end of the slide (10), the other end of the spring (9) is clamped in the slot (11), and a sealing plug (12) is fixedly connected to the lower surface of the slide (10), and the sealing plug (12) is clamped and sealed with the connecting hole (16).

3. A stop valve for adjusting flow rate according to claim 2, characterized in that: The upper surface of the housing (1) is fixedly connected to a limiting plate (13) via screws.

4. A stop valve for adjusting flow rate according to claim 1, characterized in that: The upper surface of the housing (1) is fixedly connected with a limiting bolt (14).

5. A stop valve for adjusting flow rate according to claim 1, characterized in that: The handle (5) overlaps the surface of the limiting bolt (14).

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