Novel sleeve regulating valve

Abstract

The utility model provides a novel sleeve adjusting valve, including sleeve, valve bush, valve core, valve rod, sealing ring. The common hollow section area of adjusting horizontal flow guide hole and first flow guide hole is controlled to control liquid flow when valve core rotates, and the liquid flows out through the drainage port of first flow guide hole and sleeve. The inside and outside surface of valve bush is opened to many first annular sealing grooves. The outside wall of valve core is provided with a plurality of second annular sealing grooves, and the plurality of second annular sealing grooves are separately arranged on the upper and lower sides of horizontal flow guide hole. The sealing ring realizes multistage sealing through embedding extrusion with first annular sealing groove and second annular sealing groove, improves sealing efficiency and equipment service period, and improves economic benefit as a whole.

Description

Technical Field

[0001] This utility model relates to the field of sleeve regulating valve technology, and more specifically, to a novel sleeve regulating valve. Background Technology

[0002] Sleeve control valves are key components in petrochemical equipment, regulating water injection flow by changing the valve opening. Existing sleeve control valves have a valve stem that drives the valve core to rotate within a valve sleeve, which is then housed within the sleeve. This type of valve sealing structure only has an internal sealing ring between the valve stem and the valve sleeve. This seal is located relatively far from the point through which the medium flows. In high-pressure environments, the sealing ring can deform unevenly in the lateral direction. Once this internal sealing ring is damaged, axial leakage of the medium can easily occur, affecting not only the normal operation of the equipment but also causing economic losses due to downtime. Utility Model Content

[0003] The main objective of this invention is to provide a novel sleeve regulating valve, which at least solves the problem of medium leakage caused by the failure of one inner sealing ring in the prior art.

[0004] To achieve the above objectives, this utility model provides a novel sleeve regulating valve, comprising: a sleeve, wherein a sleeve receiving cavity is formed inside the sleeve along its central axis, a water inlet port is formed at the bottom of the sleeve receiving cavity, and a drain port is formed at a lower position on the side of the sleeve receiving cavity; the upper end of the sleeve receiving cavity is an open structure; a valve sleeve, which is installed into the sleeve receiving cavity through the open structure at the upper end of the sleeve receiving cavity, and a first guide hole is formed on the side of the valve sleeve that is opposite to and communicates with the drain port; a valve core receiving cavity is formed in the valve sleeve along its central axis, and multiple first annular sealing grooves are formed on the inner and outer sides of the valve sleeve; a valve core, which is rotatably installed in the valve core receiving cavity around its axis, and a connecting groove is formed at the center of the upper section of the valve core. The valve core has a vertical guide hole at its center, which is opposite to and connected to the inlet port. A horizontal guide hole is radially formed along the lower section of the valve core, connecting the vertical guide hole and the first guide hole. When the valve core rotates, the common hollow cross-sectional area of ​​the horizontal guide hole and the first guide hole is adjusted to control the liquid flow rate. The medium flows out through the first guide hole and the drain port of the sleeve. Multiple second annular sealing grooves are formed on the outer wall of the valve core, located on the upper and lower sides of the horizontal guide hole. The valve stem is installed inside the valve sleeve at its upper part, and its bottom is fixedly connected to the connecting hole in the upper section of the valve core. A sealing ring is formed by fitting and pressing with the first and second annular sealing grooves to achieve multi-stage sealing.

[0005] Furthermore, the sleeve is rectangular in shape, and the upper port of the sleeve cavity is provided with an annular stepped structure. The upper end of the valve sleeve is provided with an annular flange structure that matches the annular stepped structure. The annular flange structure is snapped into the annular stepped structure. The inner diameter of the water inlet port of the sleeve is smaller than the diameter of the valve core.

[0006] Furthermore, the inner wall of the first annular sealing groove and the sealing ring achieve a two-stage seal through compression with the valve stem; the outer wall of the first annular sealing groove and the sealing ring achieve a multi-stage seal through compression with the sleeve; the second annular sealing groove and the sealing ring achieve a multi-stage seal through compression with the valve sleeve.

[0007] Furthermore, the valve core has a square connection hole, the upper part of the valve stem is cylindrical, and the bottom of the valve stem is cuboid. The square hole of the valve core is fixedly connected to the cuboid of the valve stem. Two second annular sealing grooves are provided on the outer wall of the valve core.

[0008] Furthermore, the clamping flange is installed on the top opening of the sleeve; the clamping flange is a cylinder with a hole at the center, and multiple through holes are evenly distributed outside the central hole, corresponding to multiple threaded holes of the sleeve. The clamping flange fixes the valve sleeve inside the sleeve with multiple bolts.

[0009] Furthermore, the top cover is installed inside the valve sleeve, which contains internal threads. The top cover is cylindrical in shape with threads on its outer surface. The valve core is fixed inside the valve sleeve by the internal threads of the valve sleeve. Two blind holes of equal diameter are machined on the upper surface of the top cover. The blind holes are used to screw the top cover into the internal threads of the sleeve.

[0010] Furthermore, the thrust ball bearing is fixed between the top cover and the valve stem; the thrust ball bearing includes upper and lower bearing carriers and a shaft ring.

[0011] Furthermore, a U-shaped groove is opened at the top of the valve stem, which is used to connect the rotating shaft of an external motor, and a through hole is opened on the side of the U-shaped groove.

[0012] Furthermore, the magnetic steel structure is installed in the side opening of the U-shaped channel.

[0013] This utility model discloses a novel sleeve regulating valve, comprising: a sleeve, wherein a sleeve receiving cavity is formed inside the sleeve along its central axis, an inlet port is formed at the bottom of the sleeve receiving cavity, and a drain port is formed at a lower position on the side of the sleeve receiving cavity; the upper end of the sleeve receiving cavity is an open structure; a valve sleeve, which is installed into the sleeve receiving cavity through the open structure at the upper end of the sleeve receiving cavity, and a first guide hole is formed on the side of the valve sleeve that is opposite to and communicates with the drain port; a valve core receiving cavity is formed in the valve sleeve along its central axis, and multiple first annular sealing grooves are formed on the inner and outer sides of the valve sleeve; a valve core, which is rotatably installed in the valve core receiving cavity around its axis, and a connecting hole is formed at the center of the upper section of the valve core; the valve core... The lower section has a vertical guide hole at its center that is opposite to and connected to the water inlet port. The lower section of the valve core has a horizontal guide hole along its radial direction that connects the vertical guide hole and the first guide hole. When the valve core rotates, the common hollow cross-sectional area of ​​the horizontal guide hole and the first guide hole is adjusted to control the liquid flow rate. The medium flows out through the first guide hole and the drain port of the sleeve. Multiple second annular sealing grooves are opened on the outer wall of the valve core. The multiple second annular sealing grooves are located on the upper and lower sides of the horizontal guide hole. The valve stem is installed in the valve sleeve at its upper part, and the bottom of the valve stem is fixedly connected to the connecting hole of the upper section of the valve core. The sealing ring achieves multi-stage sealing by fitting and pressing with the first annular sealing groove and the second annular sealing groove.

[0014] The sealing ring achieves multi-stage sealing by fitting and pressing with the first and second annular sealing grooves, which solves the problem of axial medium leakage that is easily caused by damage to one inner sealing ring in the prior art. This improves sealing efficiency and equipment service life, and enhances overall economic benefits. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a novel sleeve regulating valve, which is an optional embodiment of the present utility model;

[0017] The above figures include the following reference numerals:

[0018] 10. Sleeve; 20. Valve sleeve; 30. Valve core; 40. Valve stem; 50. Sealing ring; 60. Compression flange; 70. Top cover; 80. Thrust ball bearing; 90. Magnet steel structure. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] According to the novel sleeve regulating valve of this utility model, such as Figure 1 As shown, it includes: sleeve 10, valve sleeve 20, valve core 30, valve stem 40, sealing ring 50, clamping flange 60, top cover 70, thrust ball bearing 80, and magnetic steel structure 90. The sleeve 10 has a sleeve receiving cavity along its central axis, with a water inlet port at the bottom and a drain port on the lower side of the sleeve receiving cavity; the upper end of the sleeve receiving cavity is open. The valve sleeve 20 is installed into the sleeve receiving cavity through the open structure at the upper end of the sleeve receiving cavity, and a first guide hole is opened on the side of the valve sleeve 20, corresponding to and communicating with the drain port. The valve sleeve 20 has a valve core receiving cavity along its central axis, and multiple first annular sealing grooves are opened on its inner and outer sides. The valve core 30 is rotatably installed in the valve core receiving cavity around its axis, with a connecting hole at the center of the upper section of the valve core 30 and a connecting hole at the center of the lower section of the valve core 30 corresponding to the water inlet port. For the vertical guide holes that are connected in parallel, the lower section of the valve core 30 has a horizontal guide hole that connects the vertical guide hole and the first guide hole in the radial direction. When the valve core 30 rotates, the common hollow cross-sectional area of ​​the horizontal guide hole and the first guide hole is adjusted to control the liquid flow rate. The medium flows out through the first guide hole and the drain port of the sleeve 10. Multiple second annular sealing grooves are opened on the outer wall of the valve core 30. The multiple second annular sealing grooves are located on the upper and lower sides of the horizontal guide hole. The upper part of the valve stem 40 is installed in the valve sleeve 20, and the bottom of the valve stem 40 is fixedly connected to the connecting hole of the upper section of the valve core 30. The sealing ring 50 achieves multi-stage sealing by fitting and pressing with the first annular sealing groove and the second annular sealing groove.

[0021] In practical use, when liquid flows into valve core 30 from the inlet port, the liquid is stored in the horizontal guide hole. When valve core 30 rotates to have a common hollow cross section with the first guide hole, the liquid flows into the first guide hole and flows out from the drain port. Since multiple second annular sealing grooves are opened on the outer wall of valve core 30, the liquid stored in valve core 30 will not leak axially, thus protecting the equipment.

[0022] Furthermore, the sleeve 10 is rectangular in shape, and the upper port of the sleeve receiving cavity is provided with an annular step structure. The upper end of the valve sleeve 20 is provided with an annular flange structure that matches the annular step structure. The annular flange structure is snapped into the annular step structure. The inner diameter of the water inlet port of the sleeve 10 is smaller than the diameter of the valve core 30.

[0023] Specifically, when disassembling the valve sleeve 20, the valve sleeve 20 can be directly removed through the annular flange structure of the valve sleeve 20. When installing the valve sleeve 20, the valve sleeve 20 can be directly held by hand and clamped onto the annular step structure inside the sleeve 10.

[0024] Furthermore, the inner wall of the first annular sealing groove and the sealing ring 50 achieve a two-stage seal through compression with the valve stem 40; the outer wall of the first annular sealing groove and the sealing ring 50 achieve a multi-stage seal through compression with the sleeve 10; the second annular sealing groove and the sealing ring 50 achieve a multi-stage seal through compression with the valve sleeve 20.

[0025] In practical use, a good sealing environment is achieved between the valve stem 40 and the valve sleeve 20 due to the compression of the first annular sealing groove and the sealing ring; a good sealing environment is also achieved between the valve sleeve 20 and the sleeve 10 due to the compression of the first annular sealing groove and the sealing ring; and a good sealing environment is achieved between the valve core 30 and the valve sleeve 20 due to the compression of the second annular sealing groove and the sealing ring. Even if the second annular sealing groove leaks due to long-term wear and deformation caused by compression and twisting, the liquid can be further protected when flowing through the first annular sealing groove between the valve sleeve 20 and the sleeve 10, preventing further leakage and giving operators sufficient time to replace the sealing ring and maintain the equipment.

[0026] Furthermore, the connecting hole of the valve core 30 is a square hole, the upper part of the valve stem 40 is a cylinder, the bottom of the valve stem 40 is a cuboid, and the square hole of the valve core 30 is fixedly connected to the cuboid of the valve stem 40; two second annular sealing grooves are provided on the outer wall of the valve core 30.

[0027] In use, the square hole of the valve core 30 and the bottom cuboid of the valve stem 40 are directly connected by a tenon and mortise structure, without the need for other parts to assist in the connection, making the connection more convenient.

[0028] Furthermore, the clamping flange 60 is installed on the top opening of the sleeve 10; the clamping flange 60 is a cylinder with a hole at the center, and multiple through holes are evenly distributed outside the central hole, corresponding to multiple threaded holes in the sleeve 10. The clamping flange 60 fixes the valve sleeve 20 inside the sleeve 10 with multiple bolts.

[0029] Furthermore, the top cover 70 is installed inside the valve sleeve 20, the valve sleeve 20 has internal threads, the top cover 70 is cylindrical in shape, and the outer surface is threaded. The top cover 70 fixes the valve core 30 inside the valve sleeve 20 through the internal threads of the valve sleeve 20. Two blind holes of equal diameter are machined on the upper surface of the top cover 70. The blind holes are used to screw the top cover 70 into the internal threads of the sleeve 10.

[0030] In practical use, the top cover 70 and the valve sleeve 20 are tightened by screwing to fix the valve core 30 inside the valve sleeve 20. When installing the valve stem 40, the top cover 70 is unscrewed by manually rotating the blind hole. After connecting the bottom cuboid of the valve stem 40 to the square hole of the valve core 30, the top cover 70 is tightened. Then, the flange 60 is tightened and the valve stem 40 and the valve sleeve 20 are fixed inside the sleeve 10 by multiple bolts.

[0031] Furthermore, the thrust ball bearing 80 is fixed between the top cover 70 and the valve stem 40; the thrust ball bearing 80 includes upper and lower bearing frames and a shaft ring.

[0032] Furthermore, a U-shaped groove is opened at the top of the valve stem 40, which is used to connect the rotating shaft of the external motor, and a through hole is opened on the side of the U-shaped groove.

[0033] Furthermore, the magnetic steel structure 90 is installed in the side opening of the U-shaped groove.

[0034] In practical use, the thrust ball bearing 80 reduces the friction between the valve stem and the valve sleeve and bears the pressure from the axial direction. An external motor drives the valve stem 40 to rotate through a U-shaped groove connection. The magnetic steel structure is used to provide feedback on the valve status.

[0035] In general, when installing the valve stem 40, manually rotate the blind hole to unscrew the top cover 70, connect the bottom cuboid of the valve stem 40 to the square hole of the valve core 30, and then tighten the top cover 70. The top cover 70 and the valve sleeve 20 are tightened with threads to fix the valve core 30 inside the valve sleeve 20. The clamping flange 60 is fixed inside the sleeve 10 with multiple bolts to fix the valve stem 40 and the valve sleeve 20. When the liquid flows into the valve core 30 from the inlet port, the liquid is stored in the horizontal guide hole. The external motor drives the valve stem 40 to rotate through the U-shaped groove connection, thereby driving the valve core 30 to rotate around the axis. When the valve core 30 rotates to have a common hollow cross section with the first guide hole, the liquid flows into the first guide hole and flows out from the drain port. Since there are multiple second annular sealing grooves on the outer wall of the valve core 30, the liquid stored in the valve core 30 will not leak axially, thus forming the first line of defense inside the sleeve regulating valve. If the second annular sealing groove leaks due to long-term wear, compression, and torsion, further protection can be provided when the liquid flows through the first annular sealing groove between the valve sleeve 20 and the sleeve 10, preventing further leakage and forming a second line of defense inside the sleeve regulating valve. These two internal lines of defense, combined with the sealing structure of the first annular sealing groove on the outside of the valve sleeve, ultimately make liquid leakage less likely, giving operators ample time to replace the sealing rings and achieving excellent equipment maintenance.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A new sleeve regulating valve characterized in that, The utility model relates to a valve, including: A sleeve (10) is internally provided with a sleeve accommodating cavity along the axial direction, the bottom of the sleeve accommodating cavity is provided with a water inlet port, and the lower side of the side of the sleeve accommodating cavity is provided with a drainage port; the upper end of the sleeve accommodating cavity is an open structure; A valve sleeve (20) is installed into the sleeve accommodating cavity from the open structure of the upper end of the sleeve accommodating cavity, the side of the valve sleeve (20) is provided with a first flow guide hole opposite to and communicated with the drainage port; the valve sleeve (20) is provided with a valve core accommodating cavity along the axial direction, and the inner and outer sides of the valve sleeve (20) are provided with a plurality of first annular sealing grooves; A valve core (30) is rotatably installed in the valve core accommodating cavity around the axis, the upper section of the valve core (30) is provided with a connecting hole in the center, the lower section of the valve core (30) is provided with a vertical flow guide hole opposite to and communicated with the water inlet port in the center, the lower section of the valve core (30) is provided with a horizontal flow guide hole along the radial direction, the horizontal flow guide hole is communicated with the first flow guide hole, the common hollow cross-sectional area of the horizontal flow guide hole and the first flow guide hole is adjusted when the valve core (30) rotates to control the liquid flow, and the medium flows out through the first flow guide hole and the drainage port of the sleeve (10); the outer side wall of the valve core (30) is provided with a plurality of second annular sealing grooves; the plurality of second annular sealing grooves are separately arranged on the upper and lower sides of the horizontal flow guide hole; A valve rod (40) is arranged in the valve sleeve (20), and the bottom of the valve rod (40) is fixedly connected with the connecting hole in the upper section of the valve core (30); A sealing ring (50) is multi-stage sealed by being embedded and extruded with the first annular sealing groove and the second annular sealing groove.

2. The new sleeve regulating valve according to claim 1, characterized in that, The sleeve (10) is in the shape of a cuboid, the upper port of the sleeve accommodating cavity is provided with an annular step structure, the upper end of the valve sleeve (20) is provided with an annular flange structure matched with the annular step structure, and the annular flange structure is clamped in the annular step structure; the inner diameter of the water inlet port of the sleeve (10) is smaller than the diameter of the valve core (30).

3. The new sleeve regulating valve according to claim 1, characterized in that, The inner side wall of the first annular sealing groove and the sealing ring (50) are two-stage sealed by being extruded with the valve rod; the outer side wall of the first annular sealing groove and the sealing ring (50) are multi-stage sealed by being extruded with the sleeve (10); the second annular sealing groove and the sealing ring (50) are multi-stage sealed by being extruded between the valve sleeve (20).

4. The new sleeve regulating valve according to claim 1, characterized in that, The connecting hole of the valve core (30) is a square hole, the upper part of the valve rod (40) is a cylinder, the bottom of the valve rod (40) is a cuboid, the square hole of the valve core (30) is fixedly connected with the cuboid of the valve rod (40), and the outer side wall of the valve core (30) is provided with two second annular sealing grooves.

5. The new sleeve regulating valve according to claim 1, characterized in that, The compression flange (60) is installed on the top opening of the sleeve (10); the compression flange (60) is a cylinder with a central hole, and a plurality of through holes are uniformly distributed on the outer part of the central hole, which correspond to the plurality of threaded holes of the sleeve (10), and the compression flange (60) fixes the valve sleeve (20) in the sleeve (10) through a plurality of bolts.

6. The new sleeve regulating valve according to claim 1, characterized in that, The top cover (70) is installed in the valve sleeve (20), and the valve sleeve (20) has an internal thread; the top cover (70) is a cylinder with a threaded outer surface, and the top cover (70) is fixed in the valve sleeve (20) through the internal thread of the valve sleeve (20); the upper surface of the top cover (70) is processed with two equal-diameter blind holes which are uniformly distributed, and the blind holes are used to rotate the top cover (70) into the internal thread of the sleeve (10).

7. The new sleeve regulating valve according to claim 6, characterized in that, The thrust ball bearing (80) is fixed between the top cover (70) and the valve stem (40); the thrust ball bearing (80) includes upper and lower bearing frames and a shaft ring.

8. The new sleeve regulating valve according to claim 1, characterized in that, The top of the valve stem (40) is opened with a U-shaped groove, which is used to connect the rotating shaft of an external motor, and the side of the U-shaped groove is opened with a hole.

9. The novel sleeve regulating valve according to claim 8, wherein, The magnetic steel structure (90) is installed in the side hole of the U-shaped groove.

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