A sealing structure of a plunger type regulating valve

Abstract

The utility model relates to the technical field of plunger-type regulating valves, and discloses a sealing structure of a plunger-type regulating valve, including a valve body, wherein mounting rings are fixedly connected to the outer sides of the left and right ends of the valve body, a threaded rod is threadedly connected to the inner wall of the valve body top, the outer wall of the sealing plug is slidably connected to the inner wall of the valve body, a knob is fixedly connected to the top of the threaded rod, the top of the valve body is fixedly connected to concave frames near the left and right sides of the knob, limiting grooves are provided at the front and rear ends of the concave frame, anti-loosening components are installed on the inner wall of the concave frame, the middle parts of the left and right ends of the valve body are connected to fixing rings through limiting components, and the inner wall of the fixing ring is fixedly connected to a filter. In the utility model, the top of the knob is limited to prevent the threaded rod from loosening and moving upward when subjected to external force, resulting in a gap between the sealing plug and the internal slot of the valve body, causing water to flow out, thereby improving the sealing performance of the valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of plunger type regulating valves, in particular to a sealing structure of a plunger type regulating valve. Background Art

[0002] The plunger type regulating valve is a common regulating valve, also known as a straight-acting regulating valve. It consists of a plunger and a valve seat. The flow and pressure of the medium are controlled by adjusting the height of the plunger. The plunger opens the valve when the valve seat rises and closes the valve when it falls, thereby achieving regulation of the medium flow.

[0003] After searching, the sealing structure of a plunger-type regulating valve with announcement number CN220435455U includes: a regulating valve body, including a valve body, the top of the valve body is connected to a support column, and an adjusting rod is inserted inside the support column; the bottom of the adjusting rod is connected to a sealing mechanism, including a bearing ring, and the bottom of the bearing ring is connected to a sealing pile. The utility model controls the sealing pile to move downward through the adjusting rod, so that the bearing ring ensures that the adjusting rod does not affect the angle of the sealing pile when rotating, and the sealing pile is inserted into the sealing groove opened in the valve body to seal the inside of the valve body. The rubber pad connected to the bottom of the sealing pile is also embedded in the limiting groove opened in the valve body, so that the sealing pile and the valve body are in flexible contact, and the bottom of the sealing pile is filled and sealed by the rubber pad to prevent liquid from flowing out through the sealed gap, causing water to flow through the valve to the outside.

[0004] Based on the above patent, the existing regulating valve mentioned in its background technology blocks the water flow by sealing. When the valve is closed, liquid is likely to flow out through the sealed gap, causing water to flow through the valve to the outside. In response to this technical problem, this application proposes a sealing structure for a plunger-type regulating valve.

[0005] Therefore, in view of the problem that when the existing regulating valve is closed, liquid flows out through the blocked gap, causing water to flow through the valve to the outside, a sealing structure of a plunger-type regulating valve is needed to solve the above problem. Utility Model Content

[0006] In order to solve the problem in the prior art that when the regulating valve is closed, liquid flows out through the sealed gap, causing water to flow through the valve to the outside, the present application provides a sealing structure of a plunger-type regulating valve, which limits the top of the knob through the cooperation of a concave frame, a limit plate, a square block, a push rod, a spring, and a limit groove to prevent the threaded rod from loosening and moving upward when subjected to external force, causing a gap between the sealing plug and the internal slot of the valve body, causing water to flow out, thereby improving the sealing inside the valve body.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A sealing structure of a plunger-type regulating valve comprises a valve body, wherein the outer sides of the left and right ends of the valve body are fixedly connected with mounting rings, the inner wall of the top end of the valve body is threadedly connected with a threaded rod, the bottom end of the threaded rod is fixedly connected with a sealing plug, the outer wall of the sealing plug is slidably connected to the inner wall of the valve body, the top end of the threaded rod is fixedly connected with a knob, the top end of the valve body is fixedly connected with concave frames on the left and right sides near the knob, the front and rear ends of the concave frame are provided with limiting grooves, the inner wall of the concave frame is installed with anti-loosening components, the middle parts of the left and right ends of the valve body are connected with fixing rings through limiting components, and the inner wall of the fixing ring is fixedly connected with a filter screen.

[0009] As a further improvement of the utility model, the anti-loosening component includes a limit plate slidably connected to the inner walls at both ends of the concave frame, and the lower inner walls at both ends of the limit plate are slidably connected to square blocks, the outward end of the square block is fixedly connected to a push rod, and the inward end of the square block is connected to the inner wall of the limit plate through a spring.

[0010] As a further improvement of the utility model, one end of the spring is fixedly connected to the inward end of the square block, and the other end of the spring is fixedly connected to the inner wall of the limiting plate.

[0011] As a further improvement of the present invention, the shape of the outer wall of the square block matches the shape of the left and right sides of the inner wall of the limiting groove, and the diameter of the outer wall of the push rod is the same as the distance between the middle parts of the upper and lower ends of the inner wall of the limiting groove.

[0012] As a further improvement of the present invention, the limit assembly includes sliding bolts fixedly connected to the upper and lower sides of the inner wall of the mounting ring at the left and right ends of the valve body, the outer walls of the sliding bolts are slidably connected to slide plates, the inner walls of the upper and lower slide plates on the opposite ends are threadedly connected to bolts, the opposite ends of the bolts on the left and right sides are rotatably connected to the outer wall of the valve body, and the other sides of the opposite ends of the slide plates on the left and right sides are fixedly connected to plugs.

[0013] As a further improvement of the present invention, both upper and lower ends of the fixing ring are fixedly connected with through-hole plates, and the opposite ends of the fixing ring are tightly attached to the middle parts of the left and right ends of the valve body.

[0014] As a further improvement of the present invention, the shape of the outer wall of the plug matches the shape of the inner wall of the through hole of the through hole plate.

[0015] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0016] 1. In the utility model, by turning the knob, the sealing plug slides downward along with the threaded rod and is inserted into the slot in the middle of the valve channel in the valve body to block the water flow. Then, through the cooperation of the concave frame, the limit plate, the square block, the push rod, the spring and the limit groove, the top of the knob is limited to prevent the threaded rod from loosening and moving upward when subjected to external force, resulting in a gap between the sealing plug and the internal slot of the valve body, causing water to flow out, thereby improving the sealing performance of the valve body.

[0017] 2. In the utility model, the impurities in the water flow can be filtered through the filter to prevent the impurities from accumulating too much in the valve body and causing blockage. Then, the fixing ring can be removed from both sides of the valve body by means of bolts, slide plates, sliding bolts, through-hole plates, plugs and a screwdriver to clean the impurities on the surface of the filter, which helps to improve the flowability of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a sealing structure of a plunger-type regulating valve proposed by the utility model;

[0019] Figure 2 A valve body cross-sectional view of a sealing structure of a plunger type regulating valve proposed by the utility model;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 A schematic diagram of a concave frame structure of a sealing structure of a plunger type regulating valve proposed by the utility model;

[0022] Figure 5 A half-section view of a limit plate of a sealing structure of a plunger-type regulating valve proposed by the utility model;

[0023] Figure 6 A schematic diagram of a slide structure of a sealing structure of a plunger type regulating valve proposed by the utility model;

[0024] Figure 7 The utility model provides a schematic diagram of a through-hole plate structure of a sealing structure of a plunger-type regulating valve.

[0025] Legend:

[0026] 1. Valve body; 2. Mounting ring; 3. Threaded rod; 4. Knob; 5. Concave frame; 6. Limit plate; 7. Filter screen; 8. Fixing ring; 9. Sealing plug; 10. Bolt; 11. Slide plate; 12. Sliding bolt; 13. Through-hole plate; 14. Square block; 15. Push rod; 16. Limit groove; 17. Spring; 18. Plug. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0031] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] Embodiment 1: A sealing structure of a plunger-type regulating valve comprises a valve body 1, wherein mounting rings 2 are fixedly connected to the outer sides of the left and right ends of the valve body 1, a threaded rod 3 is threadedly connected to the inner wall of the top end of the valve body 1, a sealing plug 9 is fixedly connected to the bottom end of the threaded rod 3, the outer wall of the sealing plug 9 is slidably connected to the inner wall of the valve body 1, a knob 4 is fixedly connected to the top end of the threaded rod 3, a concave frame 5 is fixedly connected to the left and right sides of the top end of the valve body 1 near the knob 4, limiting grooves 16 are provided at the front and rear ends of the concave frame 5, and a filter screen 7 is fixedly connected to the inner wall of the fixing ring 8.

[0034] The threaded rod 3 is driven to rotate by turning the knob 4. As the thread of the threaded rod 3 slides, the sealing plug 9 slides downward in the valve body 1 until the sealing plug 9 is inserted into the slot in the middle of the valve channel in the valve body 1, thereby blocking the water flow. The impurities in the water flow can be filtered through the filter screen 7 to prevent excessive accumulation of impurities in the valve body 1 and cause blockage.

[0035] Embodiment 2: The inner walls of the front and rear ends of the concave frame 5 are slidably connected to the limit plates 6, the inner walls of the lower sides of the front and rear ends of the limit plates 6 are slidably connected with square blocks 14, the outer ends of the square blocks 14 are fixedly connected with push rods 15, the inner ends of the square blocks 14 are connected to the inner walls of the limit plates 6 through springs 17, one end of the springs 17 is fixedly connected to the inner end of the square blocks 14, and the other ends of the springs 17 are fixedly connected to the inner walls of the limit plates 6, the shapes of the outer walls of the square blocks 14 are consistent with the shapes of the left and right sides of the inner walls of the limit grooves 16, the outer wall diameters of the push rods 15 are the same as the spacing between the middle parts of the upper and lower ends of the inner walls of the limit grooves 16, and the push rods 15 on both sides are pressed respectively , so that the square block 14 slides into the limit plate 6 and squeezes the spring 17. At the same time, the square block 14 will detach from the outermost inner wall of the limit groove 16, and then move the limit plate 6 toward the outside of the knob 4, so that the inner end of the limit plate 6 is close to the top of the knob 4, and then relax the push rod 15, and drive the square block 14 to be inserted under the elastic force of the spring 17, and then the square block 14 is inserted into the innermost inner wall of the limit groove 16, so as to limit the limit plate 6, and then realize the limit plate 6 to limit the two sides of the top of the knob 4, to prevent the threaded rod 3 from loosening and moving up under the action of external force, resulting in a gap between the sealing plug 9 and the internal slot of the valve body 1, causing water to flow out.

[0036] like Figure 2 , 3As shown in , 6 and 7, the left and right ends of the valve body 1 are fixedly connected to the sliding bolts 12 on both sides of the inner wall of the mounting ring 2, and the outer wall of the sliding bolts 12 is slidably connected to the slide plate 11, and the inner wall of the opposite end of the upper and lower slide plates 11 is threadedly connected to the bolt 10, and the opposite ends of the bolts 10 on the left and right sides are rotatably connected to the outer wall of the valve body 1, and the opposite sides of the left and right slide plates 11 are fixedly connected to the plug 18 on the other side away from the sliding bolt 12, and the upper and lower ends of the fixing ring 8 are fixedly connected to the through-hole plate 13, and the opposite end of the fixing ring 8 is connected to the middle of the left and right ends of the valve body 1 The shape of the outer wall of the plug 18 is matched with the shape of the inner wall of the through hole of the through hole plate 13. Use a screwdriver to align with the bolt 10 and insert it in turn, and then rotate it to make the slide plate 11 slide on the outer wall of the bolt 10 toward the outer thread, so that the plug 18 is disengaged from the through hole in the through hole plate 13, thereby releasing the limit on the through hole plate 13, and then rotating the fixing ring 8 90°, the fixing ring 8 together with the filter screen 7 can be directly removed from both sides of the valve body 1, so as to clean the impurities attached to the surface of the filter screen 7 and improve the flow effect of the filter screen 7.

[0037] Working principle: First, the threaded rod 3 is driven to rotate by turning the knob 4. As the thread of the threaded rod 3 slides, the sealing plug 9 slides downward in the valve body 1 until the sealing plug 9 is inserted into the slot in the middle of the valve channel in the valve body 1, thereby blocking the water flow. Then, the push rods 15 on both sides are pressed respectively, so that the square block 14 slides into the limit plate 6 and squeezes the spring 17. At the same time, the square block 14 will detach from the outermost inner wall of the limit groove 16, and then move the limit plate 6 toward the outside of the knob 4, so that the inner end of the limit plate 6 is tightly attached to the top of the knob 4. Then, the push rod 15 is relaxed, and the square block 14 is driven to be inserted under the elastic force of the spring 17, and then the square block 14 is inserted into the innermost inner wall of the limit groove 16, thereby limiting the limit plate 6 and achieving the limit. The positioning plate 6 limits the two sides of the top of the knob 4 to prevent the threaded rod 3 from loosening and moving upward under the action of external force, resulting in a gap between the sealing plug 9 and the internal slot of the valve body 1, causing water to flow out. The impurities in the water can be filtered through the filter screen 7 to prevent excessive accumulation of impurities in the valve body 1 and cause blockage. Then, use a screwdriver to align with the bolts 10 and insert them in sequence, and then rotate them to make the slide plate 11 slide on the outer wall of the bolt 10 toward the outer thread, so that the plug 18 is disengaged from the through hole in the through hole plate 13, thereby releasing the limit on the through hole plate 13, and then rotating the fixing ring 8 90°, so that the fixing ring 8 together with the filter screen 7 can be directly removed from both sides of the valve body 1, so as to clean the impurities attached to the surface of the filter screen 7 and improve the flow effect of the filter screen 7.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing structure of a plunger type regulating valve, comprising a valve body (1), characterized in that: The outer sides of the left and right ends of the valve body (1) are fixedly connected with mounting rings (2); the inner wall of the top end of the valve body (1) is threadedly connected with a threaded rod (3); the bottom end of the threaded rod (3) is fixedly connected with a sealing plug (9); the outer wall of the sealing plug (9) is slidably connected to the inner wall of the valve body (1); the top end of the threaded rod (3) is fixedly connected with a knob (4); the top end of the valve body (1) is fixedly connected with a concave frame (5) on both sides near the knob (4); the front and rear ends of the concave frame (5) are provided with limiting grooves (16); the inner wall of the concave frame (5) is installed with anti-loosening components; the middle parts of the left and right ends of the valve body (1) are connected with fixing rings (8) through limiting components; the inner wall of the fixing ring (8) is fixedly connected with a filter screen (7).

2. The sealing structure of a plunger type regulating valve according to claim 1, characterized in that: The anti-loosening component comprises a limit plate (6) slidably connected to the inner walls at both the front and rear ends of the concave frame (5); the lower inner walls at both the front and rear ends of the limit plate (6) are slidably connected to square blocks (14); the outward end of the square block (14) is fixedly connected to a push rod (15); and the inward end of the square block (14) is connected to the inner wall of the limit plate (6) via a spring (17).

3. The sealing structure of a plunger type regulating valve according to claim 2, characterized in that: One end of the spring (17) is fixedly connected to the inward end of the square block (14), and the other end of the spring (17) is fixedly connected to the inner wall of the limiting plate (6).

4. The sealing structure of a plunger type regulating valve according to claim 2, characterized in that: The shape of the outer wall of the square block (14) matches the shape of the left and right sides of the inner wall of the limiting groove (16), and the diameter of the outer wall of the push rod (15) is the same as the distance between the middle parts of the upper and lower ends of the inner wall of the limiting groove (16).

5. The sealing structure of a plunger type regulating valve according to claim 1, characterized in that: The limit assembly comprises a sliding bolt (12) fixedly connected to the inner wall of the mounting ring (2) at both the left and right ends of the valve body (1), the outer wall of the sliding bolt (12) is slidably connected to a slide plate (11), the inner wall of the opposite ends of the slide plates (11) on the upper and lower sides is threadedly connected to a bolt (10), the opposite ends of the bolts (10) on the left and right sides are rotatably connected to the outer wall of the valve body (1), and the opposite ends of the slide plates (11) on the left and right sides are fixedly connected to the other side of the sliding bolt (12) with a plug (18).

6. The sealing structure of a plunger type regulating valve according to claim 1, characterized in that: The upper and lower ends of the fixing ring (8) are fixedly connected to through-hole plates (13), and the opposite ends of the fixing ring (8) are tightly attached to the middle parts of the left and right ends of the valve body (1).

7. The sealing structure of a plunger type regulating valve according to claim 5, characterized in that: The shape of the outer wall of the plug (18) matches the shape of the inner wall of the through hole of the through hole plate (13).

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