Straight-through slide regulating valve

Abstract

This utility model relates to the field of regulating valve technology, and in particular to a straight-through sliding plate regulating valve, comprising a regulating valve body. A square pressure block is bolted to the right side surface of the regulating valve body by a first bolt. A first sealing gasket is provided between the regulating valve body and the square pressure block. A circular connecting block is integrally formed on the right side of the square pressure block. A through hole is opened in the interior of the square pressure block and the circular connecting block. Two first perforated plates and two second perforated plates with perforations on their surfaces are slidably connected to the inner wall of the mounting groove. A covering device is provided at the upper end of the mounting groove. The perforations on the first and second perforated plates of this utility model are easy to clean. By unscrewing and removing the second bolt of the covering device, the first and second perforated plates can be disassembled without removing the entire regulating valve from the pipeline, making maintenance very convenient.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve technology, and in particular to a straight-through sliding plate regulating valve. Background Technology

[0002] The high-pressure differential sliding plate regulating valve is designed for pipeline media with very small flow rates but high pressures that require precise adjustment. It is suitable for high-pressure differential and low-flow regulation, avoids phenomena such as cavitation and flashing, is not easily worn, and has a long service life.

[0003] For example, the authorized announcement number "CN205745392U" is named High Differential Precision Small Diameter Slide Plate Control Valve. By setting the moving slide plate to slide up and down with the valve stem, the water flow area of ​​the throttling orifice of the moving and stationary slide plates can be changed, so that a small flow capacity can be easily obtained without changing the overall shape of the control valve.

[0004] The above-mentioned and existing technologies have the following drawbacks: the water passage holes on the orifice plate of the regulating valve are not easy to clean and disassembly is troublesome. The entire regulating valve needs to be removed from the pipeline before the orifice plate can be removed for cleaning, which is very inconvenient for maintenance. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a straight-through sliding plate regulating valve.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a straight-through sliding plate regulating valve, including a regulating valve body, an internal valve cavity, a movable sliding plate with multiple first through holes on its surface slidably connected to the inner wall of the valve cavity, an inlet on the left inner wall of the valve cavity, an outlet on the right inner wall of the valve cavity, a stationary sliding plate with multiple second through holes on its surface embedded in the inner wall of the outlet, a square pressure block bolted to the right surface of the regulating valve body by a first bolt, a first sealing gasket between the regulating valve body and the square pressure block, a circular connecting block integrally formed on the right side of the square pressure block, a through hole common to both the square pressure block and the circular connecting block, the through hole communicating with the outlet, an installation through groove communicating with the through hole on the upper surface of the square pressure block, two first perforated plates with holes on their surfaces and two second perforated plates with holes on their surfaces slidably connected to the inner wall of the installation through groove, the first and second perforated plates being arranged alternately, and a covering device being provided at the upper end of the installation through groove.

[0008] Preferably, the covering device includes a T-shaped groove, a T-shaped block, and a second bolt. The upper end of the mounting groove has a T-shaped groove, and the T-shaped block is provided inside the T-shaped groove. The T-shaped block is bolted to the lower inner wall of the T-shaped groove by the second bolt.

[0009] Preferably, the left side surface of the square pressure block is provided with a stepped groove, and the static sliding plate is provided with mounting edges around its perimeter, the mounting edges extending into the stepped groove and matching it.

[0010] Preferably, a second sealing gasket is provided between the upper part of the T-shaped block and the upper inner wall of the T-shaped groove, and a third sealing gasket is provided between the lower part of the T-shaped block and the lower inner wall of the T-shaped groove.

[0011] Preferably, a positioning groove is provided on the lower inner wall of the through hole, and the lower ends of the first and second perforated plates extend into the positioning groove.

[0012] Preferably, the left side surface of the regulating valve body is provided with a mounting flange, and the right side surface of the circular connecting block is also provided with a mounting flange, and multiple assembly holes are evenly opened on the surfaces of both mounting flanges.

[0013] The advantages of the straight-through sliding plate regulating valve proposed in this utility model are as follows: the holes on the first and second orifice plates of this regulating valve are easy to clean. By unscrewing and removing the second bolt of the cover device, and then removing the T-block, the first and second orifice plates can be disassembled without having to remove the entire regulating valve from the pipeline, making maintenance very convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0016] Figure 3 This is an enlarged view of position A in this utility model;

[0017] Figure 4 This is an enlarged view of position B of this utility model.

[0018] In the diagram: 1. Control valve body; 2. Valve chamber; 3. First through hole; 4. Moving slide plate; 5. Inlet; 6. Outlet; 7. Second through hole; 8. Stationary slide plate; 9. First bolt; 10. Square pressure block; 11. Circular connecting block; 12. Through hole; 13. Mounting through groove; 14. First orifice plate; 15. Second orifice plate; 16. T-slot; 17. T-block; 18. Second bolt; 19. First sealing gasket; 20. Step groove; 21. Mounting edge; 22. Second sealing gasket; 23. Third sealing gasket; 24. Positioning groove; 25. Mounting flange; 26. Assembly hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-4 A straight-through sliding plate regulating valve includes a regulating valve body 1, a valve cavity 2 inside the regulating valve body 1, a movable sliding plate 4 with multiple first through holes 3 slidably connected to the inner wall of the valve cavity 2, an inlet 5 on the left inner wall of the valve cavity 2, an outlet 6 on the right inner wall of the valve cavity 2, a stationary sliding plate 8 with multiple second through holes 7 embedded in the inner wall of the outlet 6, and a square pressure block 10 bolted to the right surface of the regulating valve body 1 by a first bolt 9, with a first seal between the regulating valve body 1 and the square pressure block 10. The pad 19 and the square pressure block 10 have a circular connecting block 11 integrally formed on the right side. The square pressure block 10 and the circular connecting block 11 have a through hole 12 in their interiors. The through hole 12 is connected to the outlet 6. The upper surface of the square pressure block 10 has an installation groove 13 that is connected to the through hole 12. The inner wall of the installation groove 13 is slidably connected to two first hole plates 14 and two second hole plates 15 with plate holes on their surfaces. The first hole plates 14 and the second hole plates 15 are arranged alternately. The upper end of the installation groove 13 is provided with a covering device.

[0021] The covering device includes a T-shaped groove 16, a T-shaped block 17, and a second bolt 18. The upper end of the mounting through groove 13 is provided with a T-shaped groove 16, and a T-shaped block 17 is provided inside the T-shaped groove 16. The T-shaped block 17 is bolted to the lower inner wall of the T-shaped groove 16 by the second bolt 18.

[0022] The square pressure block 10 has a stepped groove 20 on its left side surface, and the stationary slide plate 8 has mounting edges 21 on all four sides. The mounting edges 21 extend into the stepped groove 20 and match it. The stepped groove 20 of the square pressure block 10 can make the stationary slide plate 8 more secure.

[0023] A second sealing gasket 22 is provided between the upper part of the T-block 17 and the upper inner wall of the T-groove 16, and a third sealing gasket 23 is provided between the lower part of the T-block 17 and the lower inner wall of the T-groove 16. The second sealing gasket 22 and the third sealing gasket 23 improve the sealing performance of the T-block 17.

[0024] A positioning groove 24 is provided on the lower inner wall of the through hole 12, and the lower ends of the first orifice plate 14 and the second orifice plate 15 extend into the positioning groove 24. The positioning groove 24 improves the sealing performance between the first orifice plate 14, the second orifice plate 15 and the through hole 12.

[0025] The left side surface of the regulating valve body 1 is provided with a mounting flange 25, and the right side surface of the circular connecting block 11 is also provided with a mounting flange 25. Both mounting flanges 25 have multiple evenly spaced mounting holes 26. Pipes can be connected through the mounting flanges 25, and then bolted together through the mounting holes 26.

[0026] Working principle: When it is necessary to disassemble the first orifice plate 14 and the second orifice plate 15, firstly close the pipeline connected to this regulating valve, then use the cover device to unscrew and remove the second bolt 18, then remove the T-block 17, and then remove the first orifice plate 14 and the second orifice plate 15 from the mounting slot 13. Then, the first orifice plate 14 and the second orifice plate 15 can be cleaned and maintained. After maintenance, insert the first orifice plate 14 and the second orifice plate 15 into the mounting slot 13, then install the T-block 17 into the T-slot 16 and tighten it with the second bolt 18. In summary, the orifice plates 14 and 15 of this regulating valve are easy to clean. By unscrewing and removing the second bolt 18 of the cover device and then removing the T-block 17, the first orifice plate 14 and the second orifice plate 15 can be disassembled without removing the entire regulating valve from the pipeline, making maintenance very convenient.

[0027] If cleaning and maintenance of the stationary slide plate 8 is required, the entire regulating valve needs to be disassembled. Then, by unscrewing the first bolt 9, the square pressure block 10 and the round connecting block 11 can be removed, and the stationary slide plate 8 can then be removed. The working principle of this slide plate regulating valve is existing technology and will not be described in detail here.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A straight-through sliding plate regulating valve, comprising a regulating valve body (1), characterized in that, The regulating valve body (1) has a valve cavity (2) inside. A sliding plate (4) with multiple first through holes (3) on its surface is slidably connected to the inner wall of the valve cavity (2). An inlet (5) is opened on the left inner wall of the valve cavity (2), and an outlet (6) is opened on the right inner wall of the valve cavity (2). A stationary plate (8) with multiple second through holes (7) on its surface is embedded in the inner wall of the outlet (6). A square pressure block (10) is bolted to the right surface of the regulating valve body (1) by a first bolt (9). A first sealing gasket (19) is provided between the regulating valve body (1) and the square pressure block (10). A circular connecting block (11) is integrally formed on the right side of the square pressing block (10). The square pressing block (10) and the circular connecting block (11) are provided with a through hole (12). The through hole (12) is connected to the outlet (6). The upper surface of the square pressing block (10) is provided with an installation through groove (13) that is connected to the through hole (12). The inner wall of the installation through groove (13) is slidably connected to two first hole plates (14) with plate holes on their surfaces and two second hole plates (15) with plate holes on their surfaces. The first hole plates (14) and the second hole plates (15) are arranged alternately. The upper end of the installation through groove (13) is provided with a covering device.

2. The straight-through sliding plate regulating valve according to claim 1, characterized in that, The covering device includes a T-shaped groove (16), a T-shaped block (17), and a second bolt (18). The upper end of the mounting through groove (13) is provided with a T-shaped groove (16), and a T-shaped block (17) is provided inside the T-shaped groove (16). The T-shaped block (17) is bolted to the lower inner wall of the T-shaped groove (16) by the second bolt (18).

3. The straight-through sliding plate regulating valve according to claim 1, characterized in that, The square pressure block (10) has a stepped groove (20) on its left side surface. The stationary slide plate (8) has mounting edges (21) around its perimeter. The mounting edges (21) extend into the stepped groove (20) and match it.

4. The straight-through sliding plate regulating valve according to claim 2, characterized in that, A second sealing gasket (22) is provided between the upper part of the T-shaped block (17) and the upper inner wall of the T-shaped groove (16), and a third sealing gasket (23) is provided between the lower part of the T-shaped block (17) and the lower inner wall of the T-shaped groove (16).

5. The straight-through sliding plate regulating valve according to claim 1, characterized in that, The lower inner wall of the through hole (12) is provided with a positioning groove (24), and the lower ends of the first hole plate (14) and the second hole plate (15) extend into the positioning groove (24).

6. The straight-through sliding plate regulating valve according to claim 1, characterized in that, The regulating valve body (1) has a mounting flange (25) on its left side surface, and the circular connecting block (11) also has a mounting flange (25) on its right side surface. Both mounting flanges (25) have multiple assembly holes (26) evenly distributed on their surfaces.

Images