Anti-scouring single-seat regulating valve

Abstract

The utility model provides an anti-scour single-seat regulating valve which comprises a valve body and a valve rod, a feeding port and a discharging port are formed in the valve body, the axis of the feeding port is perpendicular to the axis of the discharging port, the valve rod is movably inserted into the valve body, a valve element is arranged at the inserting end of the valve rod, an annular composite valve plate is installed on the valve element, a valve seat is arranged on the discharging port, and the valve seat is arranged on the valve rod. The outer wall of the valve seat is attached to and connected with the inner wall of the discharging port, the annular composite valve plate is used for being inserted into the valve seat, and a plurality of overflowing windows are formed in the annular composite valve plate. Meanwhile, the annular composite valve plate is used for being inserted into the valve seat, and a plurality of overflowing windows are formed in the annular composite valve plate. The overflowing windows can be beneficial to dispersing the fluid and reducing the flow speed and impact force of each flow beam, so that the scouring effect is reduced, and the scouring of the fluid to the valve element and the valve seat is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to adjusting valve equipment field, in particular to a kind of anti-scouring single seat regulating valve. BACKGROUND

[0002] Lime milk regulating valve is a kind of valve specially used for regulating lime milk (such as lime milk) flow. It is usually installed on the pipeline, and the flow, pressure and other parameters of medium are adjusted by changing the flow area between the valve core and the valve seat. In the fluid control system, as the key component for regulating and cutting off fluid medium, the stability and durability of the valve directly affect the safe operation and efficiency of the entire system. Especially in the occasion where accurate regulation of fluid flow is required, the valve often needs to work for a long time at small opening state. However, due to the high viscosity of lime milk, the medium is not easy to discharge from the guide ring discharge groove during use. During long-term use, high-viscosity medium may accumulate in the cavity formed by the valve core, guide ring and upper valve cover, resulting in incomplete opening of the valve and insufficient flow of high-viscosity medium on site. At the same time, the valve core and valve seat are designed by spray welding. When used at small opening state, the valve core and valve seat throttling surface bear extremely high flow rate and fluid impact force, causing valve leakage and affecting on-site safety production. SUMMARY

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present utility model is to provide an anti-scouring single seat regulating valve to solve the technical problem of valve leakage caused by the valve core and valve seat throttling surface bearing extremely high flow rate and fluid impact force when used at small opening state in the prior art.

[0004] To achieve the above-mentioned purposes and other related purposes, the utility model provides an anti-scouring single seat regulating valve, comprising:

[0005] A valve body is provided with an inlet and an outlet, and the axis of the inlet is perpendicular to the axis of the outlet.

[0006] A valve stem is movably inserted into the valve body, and the insertion end of the valve stem is provided with a valve core, and an annular composite valve plate is installed on the valve core.

[0007] A valve seat is provided on the outlet, and the valve seat is in the form of an annular structure, and the outer wall of the valve seat is attached to and connected with the inner wall of the outlet. The annular composite valve plate is inserted into the valve seat, and a plurality of flow windows are provided on the annular composite valve plate.

[0008] The valve body is provided with an inlet and an outlet, and the axis of the inlet is perpendicular to the axis of the outlet, which helps to change the flow direction of the fluid, reduce the direct impact of the fluid on the valve core, and the annular composite valve plate is inserted into the valve seat and provided with a plurality of flow windows. These flow windows can help to disperse the fluid, reduce the flow rate and impact force of each flow beam, thereby reducing the scouring effect and reducing the scouring of the fluid on the valve core and the valve seat.

[0009] Optionally, the annular composite valve plate comprises a first sleeve and a second sleeve, one end of the first sleeve is provided with a top plate, a mounting column is arranged on the top plate, the first sleeve is fixed on the valve core through the mounting column, the second sleeve is sleeved on the outer wall of the first sleeve, a plurality of first openings are arranged on the first sleeve, a plurality of second openings are arranged on the second sleeve, the first openings correspond to the second openings one by one, and the first openings and the corresponding second openings form the flow windows.

[0010] Optionally, the outer wall of the first sleeve is further provided with an annular mounting groove, the annular mounting groove is close to the top plate and communicates with the end face of the top plate, the inner wall of one end of the second sleeve is provided with a mounting ring, the mounting ring is located in the annular mounting groove, and the first sleeve presses the mounting ring on the valve core.

[0011] Optionally, the end face of the valve core towards the outlet is provided with a mounting hole, the outer wall of the mounting column is provided with a thread, and the mounting column is screwed in the mounting hole.

[0012] Optionally, the valve core is provided with a positioning hole, the hole center line of the positioning hole is perpendicular to the axis of the mounting column, the outer wall of the mounting column is provided with a positioning groove, an anti-rotation pin is inserted in the positioning hole, and the insertion end of the anti-rotation pin is located in the positioning groove.

[0013] Optionally, the valve seat comprises a valve seat body and a valve seat ring, the valve seat body is in a cylindrical structure, the valve seat body is arranged on the valve body through the valve seat ring, the valve seat ring is fixed on the valve body through bolts, and a plurality of anti-rotation units are arranged between the valve seat body and the valve seat ring.

[0014] Optionally, a sealing ring is arranged between the valve seat ring and the valve body.

[0015] Optionally, the second sleeve is made of hard alloy material.

[0016] Optionally, the anti-rotation unit is a limiting bolt fixed on the valve seat ring, and the outer wall of the valve seat body is provided with a plurality of limiting holes. As described above, the anti-scouring single-seat regulating valve has the following beneficial effects: the valve body is provided with a feed inlet and a discharge outlet, and the axial center line of the feed inlet is perpendicular to the axial center line of the discharge outlet, which helps to change the flow direction of the fluid and reduce the direct impact of the fluid on the valve core. At the same time, the annular composite valve plate is used for being inserted into the valve seat and is provided with a plurality of flow windows thereon. These flow windows can help to disperse the fluid, reduce the flow rate and impact force of each flow beam, and thus reduce the scouring effect and reduce the scouring of the fluid on the valve core and the valve seat. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A structure schematic diagram of a closed state of a regulating valve is shown as an embodiment of the utility model;

[0018] Figure 2 A structure schematic diagram of an open state of a regulating valve is shown as an embodiment of the utility model;

[0019] Figure 3 A cross-sectional structure schematic diagram of a valve core and an annular composite valve plate is shown as an embodiment of the utility model;

[0020] Figure 4 A cross-sectional structure schematic diagram of a valve seat is shown as an embodiment of the utility model.

[0021] PART NUMBER EXPLANATION

[0022] 1 valve body

[0023] 2 valve rod

[0024] 201 valve core

[0025] 3 annular composite valve plate

[0026] 301 first sleeve

[0027] 302 second sleeve

[0028] 4 valve seat

[0029] 401 valve seat body

[0030] 402 valve seat ring

[0031] a flow window DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in detail with specific examples. Those skilled in the art can easily understand other advantages and functions of the present application from the content disclosed in the specification. The present application can also be implemented or applied in other different specific embodiments, and various modifications or changes can be made to the details in the specification without departing from the spirit of the present application.

[0033] Please refer to Figures 1 to 4 It is to be noted that the diagrams provided in the embodiments only schematically illustrate the basic concept of the present application, and only show the components related to the present application, not the number, shape and size of the components in actual implementation. The shape, number and proportion of each component in implementation can be arbitrarily changed, and the component layout pattern can be more complex. The structure, proportion and size shown in the drawings of the specification are only used to understand and read the content disclosed in the specification by those skilled in the art, and do not limit the implementation conditions of the present application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, not to limit the scope of the present application, and the change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the present application.

[0034] Please refer to Figures 1 to 4 The present application provides a kind of scouring single seat regulating valve, comprising:

[0035] Valve body 1, the valve body 1 is equipped with feed inlet and discharge outlet, the axis of the feed inlet is perpendicular to the axis of the discharge outlet;

[0036] Valve stem 2, the valve stem 2 is movably inserted in the valve body 1, the insertion end of the valve stem 2 is equipped with valve core 201, annular composite valve plate 3 is installed on the valve core 201;

[0037] Valve seat 4 is equipped on the discharge outlet, the valve seat 4 is annular structure, the outer wall of the valve seat 4 is attached and connected with the inner wall of the discharge outlet, the annular composite valve plate 3 is used to insert in the valve seat 4, a plurality of flow windows a are equipped on the annular composite valve plate 3.

[0038] It is also necessary to point out that in this application, the valve body 1 is provided with an inlet and an outlet, and the axis of the inlet is perpendicular to the axis of the outlet. This design may help to change the direction of the fluid flow and reduce the direct impact of the fluid on the valve core. The annular composite valve plate 3 is inserted into the valve seat 4 and is provided with a plurality of flow windows. These flow windows may help to disperse the fluid, reduce the flow rate and impact force of each flow beam, thereby reducing the scouring effect and reducing the scouring of the fluid on the valve core and the valve seat.

[0039] Wherein, the diameter of the valve core 201 gradually increases, the closer to the outlet, the larger the diameter, which can further reduce the impact and scouring of the fluid on the valve core. This design helps to prolong the service life of the valve core and reduce the risk of leakage.

[0040] For example, the annular composite valve plate 3 includes a first sleeve 301 and a second sleeve 302, the first sleeve 301 is provided with a top plate at one end, the top plate is provided with a mounting column, the first sleeve 301 is fixed on the valve core 201 through the mounting column, the second sleeve 302 is sleeved on the outer wall of the first sleeve 301, the first sleeve 301 is provided with a plurality of first openings, the second sleeve 302 is provided with a plurality of second openings, the first openings correspond to the second openings one by one, and the first openings and the corresponding second openings form the flow window a.

[0041] It is also necessary to point out that the purpose of adopting the composite design of the first sleeve 301 and the second sleeve 302 for the annular composite valve plate 3 is to improve the structural strength of the annular composite valve plate 3, so as to enhance their wear resistance and anti-scouring ability.

[0042] In this application, the second sleeve 302 on the outside can adopt materials with higher hardness, such as silicon carbide and composite ceramic materials.

[0043] For example, the outer wall of the first sleeve 301 is also provided with an annular mounting groove, the annular mounting groove is close to the top plate and communicates with the end face of the top plate, the inner wall of one end of the second sleeve 302 is provided with a mounting ring, the mounting ring is located in the annular mounting groove, and the first sleeve 301 presses the mounting ring on the valve core 201.

[0044] It is also necessary to point out that the purpose of providing the annular mounting groove on the outer wall of the first sleeve 301 is to provide axial limiting for the connection of the second sleeve 302, so as to avoid the axial loosening between the first sleeve 301 and the second sleeve 302, and at the same time, the annular mounting groove can also provide positioning for the second sleeve 302, so as to ensure that the position of the second sleeve 302 can be kept consistent every time during installation, and ensure that the second sleeve 302 is installed in place.

[0045] Exemplarily, the valve core 201 is provided with a mounting hole on the end face thereof facing the discharge port, and the outer wall of the mounting column is provided with a screw thread, and the mounting column is screwed into the mounting hole.

[0046] It should be further noted that the mounting hole provided on the end face of the valve core 201 facing the discharge port is to provide a mounting position for the first sleeve 301, to ensure reliable connection between the first sleeve 301 and the valve core 201, and the threaded connection can ensure easy disassembly when the first sleeve 301 is replaced.

[0047] Exemplarily, the valve core 201 is provided with a positioning hole, the center line of the positioning hole is perpendicular to the axis of the mounting column, the outer wall of the mounting column is provided with a positioning groove, and an anti-rotation pin is inserted into the positioning hole, and the insertion end of the anti-rotation pin is located in the positioning groove.

[0048] It should be further noted that the positioning hole, the positioning groove and the anti-rotation pin provided on the valve core 201 are to prevent the mounting column from rotating axially in the corresponding mounting hole, and to avoid axial rotation between the first sleeve 301 and the valve core 201.

[0049] Exemplarily, the valve seat 4 comprises a valve seat body 401 and a valve seat ring 402, the valve seat body 401 is in a cylindrical structure, the valve seat body 401 is arranged on the valve body 1 through the valve seat ring 402, the valve seat ring 402 is fixed on the valve body 1 by bolts, and a plurality of anti-rotation units are arranged between the valve seat body 401 and the valve seat ring 402.

[0050] It should be further noted that the valve seat ring 402 is arranged on the discharge port of the valve body 1, the inner wall of the valve body 1 near the discharge port is provided with an annular mounting step, the annular mounting step matches the valve seat ring 402 to accommodate the valve seat ring 402, reduces the friction between the valve seat body 401 and the valve body 1, reduces the wear degree of the valve, and the valve seat ring 402 balances the axial pressure of the packing gland, ensures uniform stress of the packing, and prevents deformation or damage due to excessive local pressure.

[0051] Exemplarily, a sealing ring is arranged between the valve seat ring 402 and the valve body 1.

[0052] It should be further noted that the purpose of arranging the sealing ring is to further improve the sealing performance between the valve seat ring 402 and the valve body 1.

[0053] It needs to be further explained that the outer wall of the second sleeve 302 is also provided with a limiting ring, the limiting ring is arranged around the outer wall of the second sleeve 302, the outer diameter of the second sleeve 302 is the same as the inner diameter of the valve seat body 401, the limiting ring is integrally formed with the second sleeve 302, and the limiting ring is used for limiting the axial stroke of the second sleeve 302.

[0054] The inner diameter of the valve seat body 401 gradually decreases from inside to outside, increases the flow passage space, and is used for improving the flow of the flow passage.

[0055] Exemplarily, the second sleeve 302 is made of hard alloy.

[0056] It needs to be further explained that the second sleeve 302 in the application is made of hard alloy such as austenitic stainless steel, which can reduce the erosion effect by using the wear resistance and erosion resistance of the hard alloy.

[0057] It needs to be further explained that the first sleeve 301 and the second sleeve 302 are connected in a hot-embedding connection mode.

[0058] Exemplarily, the anti-rotation unit is a limiting bolt, the limiting bolt is fixed on the valve seat ring 402, the outer wall of the valve seat body 401 is provided with a plurality of limiting holes, and the limiting bolt extends into the corresponding limiting hole.

[0059] It needs to be further explained that the purpose of arranging the limiting bolt is to avoid the radial rotation between the valve seat body 401 and the valve seat ring 402, and to improve the overall stability of the structure.

[0060] Exemplarily, the inner wall of the valve seat body 401 close to the valve core 201 matches and abuts the outer wall of the annular composite valve plate 3, the inner wall of the valve seat body 401 close to the valve core 201 is used for guiding the annular composite valve plate 3, and the inner wall of the valve seat body 401 away from the valve core 201 is inclined and transitions.

[0061] Exemplarily, the valve body 1 and the valve rod 2 are also provided with a sealing structure.

[0062] It needs to be further explained that the sealing structure arranged between the valve body 1 and the valve rod 2 includes a packing seal, a cover plate is arranged on the valve body 1, the valve rod 2 extends from the middle of the cover plate, a compression spring is further sleeved on the valve rod 2, the compression spring is located between the cover plate and the packing seal, a sealing ring is further sleeved on the valve rod 2, and the sealing ring is pressed by the compression spring to press the packing and ensure the tightness of the sealing structure.

[0063] In the application, the valve body 1 comprises a valve body 101 and an upper valve cover 102, the valve body 101 is provided with a mounting window, the mounting window is arranged opposite to the discharge port, and the upper valve cover 102 is arranged on the mounting window.

[0064] A valve rod 2, the upper valve cover 102 is provided with a groove on the end face of the inner cavity of the valve body 1, the groove bottom is provided with a through hole, the valve rod 2 is inserted into the valve body 1 through the through hole, the groove mouth diameter is greater than the groove bottom diameter, and the valve core 201 is arranged in an inclined manner close to the end of the upper valve cover 102, so that the medium accumulation is avoided.

[0065] Further, the groove bottom of the groove is provided with a groove matched with the end of the valve core 201, so as to position and guide the position of the valve rod 2.

[0066] As described above, the anti-erosion single-seat regulating valve has the advantages that the valve body is provided with a feeding port and a discharge port, the axial line of the feeding port is perpendicular to the axial line of the discharge port, the flow direction of fluid is changed, the direct impact of fluid on the valve core is reduced, the annular composite valve plate is inserted into the valve seat and is provided with a plurality of flow windows, the flow windows can help to disperse fluid, reduce the flow rate and impact force of each flow beam, reduce the erosion effect, and reduce the erosion of fluid on the valve core and the valve seat.

[0067] The above examples only exemplarily illustrate the principle and effect of the utility model, and are not used for limiting the utility model. Any person skilled in the art can modify or change the above examples without departing from the spirit and category of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought of the utility model should be covered by the claims of the utility model.

Claims

1. An anti-washout single seat control valve characterized by, The utility model provides a valve, which comprises a valve body, a valve stem, a valve core, a valve seat, and a ring-shaped composite valve plate. The valve body is provided with an inlet and an outlet, and the axis of the inlet is perpendicular to the axis of the outlet. The valve stem is movably inserted into the valve body, and the insertion end of the valve stem is provided with the valve core. The valve core is provided with the ring-shaped composite valve plate.

2. A single seat control valve according to claim 1, wherein: The ring-shaped composite valve plate is used for being inserted into the valve seat.

3. A single seat control valve according to claim 2, wherein: The ring-shaped composite valve plate comprises a first sleeve and a second sleeve.

4. A single seat control valve according to claim 3, wherein: The first sleeve is provided with a top plate at one end.

5. A single seat control valve according to claim 4, wherein: The top plate is provided with a mounting column.

6. A single seat control valve according to claim 5, wherein: The first sleeve is fixed to the valve core through the mounting column.

7. A single seat control valve according to claim 6, wherein: The second sleeve is sleeved on the outer wall of the first sleeve.

8. A single seat control valve according to claim 7, wherein: The first sleeve is provided with a plurality of first openings.

9. A single seat control valve according to claim 8, wherein: The second sleeve is provided with a plurality of second openings.

10. A single seat control valve according to claim 9, wherein: The first openings correspond to the second openings one by one. The first openings and the corresponding second openings form the flow window. The outer wall of the first sleeve is further provided with an annular mounting groove. The annular mounting groove is close to the top plate and communicates with the end face of the top plate. The inner wall of one end of the second sleeve is provided with a mounting ring. The mounting ring is located in the annular mounting groove. The first sleeve presses the mounting ring on the valve core. The end face of the valve core facing the outlet is provided with a mounting hole. The outer wall of the mounting column is provided with a thread. The mounting column is screwed into the mounting hole. The valve core is provided with a positioning hole. The hole center line of the positioning hole is perpendicular to the axis of the mounting column. The outer wall of the mounting column is provided with a positioning groove. The positioning hole is inserted with an anti-rotation pin. The insertion end of the anti-rotation pin is located in the positioning groove. The valve seat comprises a valve seat body and a valve seat ring. The valve seat body is in a cylindrical structure. The valve seat body is arranged on the valve body through the valve seat ring. The valve seat ring is fixed on the valve body through bolts. A plurality of anti-rotation units are arranged between the valve seat ring and the valve body. A sealing ring is arranged between the valve seat ring and the valve body. The second sleeve is made of hard alloy. The anti-rotation unit is a limiting bolt. The limiting bolt is fixed on the valve seat ring. The outer wall of the valve seat body is provided with a plurality of limiting holes. The limiting bolt extends into the corresponding limiting hole. The inner wall of the valve seat body close to the valve core matches and is attached to the outer wall of the ring-shaped composite valve plate. The inner wall of the valve seat body close to the valve core is used for guiding the ring-shaped composite valve plate. The inner wall of the valve seat body away from the valve core is inclined and transitions.

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