Single-seat regulating valve for high-viscosity medium working condition

Abstract

The single-seat regulating valve for the high-viscosity medium working condition comprises a valve body and a valve rod, a feeding port and a discharging port are formed in the valve body, the valve body comprises a valve body main body and an upper valve cover, an installation window is arranged on the valve body main body, the upper valve cover is arranged on the installation window, and a groove is formed in the end face, facing an inner cavity of the valve body, of the upper valve cover. A through hole is formed in the groove bottom of the groove, the valve rod is inserted into the valve body through the through hole, a valve element is arranged at the inserting end of the valve rod, an annular valve plate is installed on the valve element, an annular valve seat is arranged on the discharging port, the annular valve plate is used for being inserted into the valve seat, a plurality of overflowing windows are formed in the annular valve plate, and fluid can be dispersed through the overflowing windows. And the flow speed and impact force of each flow beam are reduced, 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] This utility model relates to the field of control valve equipment, and in particular to a single-seat control valve for high-viscosity media. Background Technology

[0002] A lime slurry regulating valve is a valve specifically designed to regulate the flow rate of lime slurry (such as quicklime slurry). It is typically installed on pipelines and adjusts parameters such as flow rate and pressure by changing the flow area between the valve core and seat. In fluid control systems, valves are key components for regulating and cutting off fluid media; their stability and durability directly affect the safe operation and efficiency of the entire system. Especially in applications requiring precise flow rate regulation, valves often need to operate for extended periods at small openings. However, traditional lime slurry regulating valves suffer from high lime slurry viscosity, making it difficult for the medium to drain from the guide ring's discharge groove during operation. Over time, this leads to the accumulation of high-viscosity media in the cavity formed by the valve core, guide ring, and upper valve cover, resulting in incomplete valve opening and insufficient flow of the high-viscosity medium. Furthermore, the valve core and seat are designed with spray welding; when used at small openings, the throttling surfaces of the valve core and seat are subjected to extremely high flow velocities and fluid impact forces, causing valve leakage and impacting on-site safety. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a single-seat regulating valve for high-viscosity media, which solves the technical problems in the prior art where high-viscosity media slowly accumulate in the cavity formed by the valve core, guide ring and upper valve cover, and when used in a small opening state, the valve core and valve seat throttling surface are subjected to extremely high flow velocity and fluid impact force, causing valve leakage.

[0004] To achieve the above and other related objectives, this utility model provides a single-seat regulating valve for high-viscosity media applications, comprising:

[0005] The valve body has an inlet and an outlet, and the centerline of the inlet is perpendicular to the centerline of the outlet.

[0006] A valve stem is inserted into the valve body. The insertion end of the valve stem is provided with a valve core. An annular valve plate is installed on the valve core. An annular valve seat is provided on the discharge port. The valve seat has an annular structure. The outer wall of the valve seat is attached to and connected to the inner wall of the discharge port. The annular valve plate is used to be inserted into the valve seat. Multiple flow windows are provided on the annular valve plate.

[0007] The inner ring of the valve seat is provided with a guide portion, which matches and fits against the outer wall of the annular valve plate. The guide portion is used to guide the annular valve plate.

[0008] The advantages of the above technical solution are that the valve body has 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 and reduce the direct impact of the fluid on the valve core. The inclined design of the inner wall of the groove on the upper valve cover allows sufficient space for the medium to overflow during the extension and retraction of the valve stem, preventing accumulation. Simultaneously, the annular valve plate is inserted into the valve seat and has multiple flow windows. These flow windows may help disperse the fluid, reduce the flow velocity and impact force of each stream, thereby reducing scouring and minimizing the scouring effect on the valve core and valve seat.

[0009] Optionally, the valve body includes a valve body body and an upper valve cover. The valve body body is provided with an installation window, which is directly opposite the discharge port. The upper valve cover is disposed on the installation window. The end face of the upper valve cover facing the inner cavity of the valve body is provided with a groove. The bottom of the groove is provided with a through hole. The valve stem is inserted into the valve body through the through hole. The diameter of the groove opening is larger than the diameter of the groove bottom. The outer diameter of the valve core gradually increases from the end near the upper valve cover to the end near the discharge port. The end face of the valve core away from the annular valve plate is inclined and transitions.

[0010] Optionally, the maximum outer diameter of the valve core is smaller than the groove diameter.

[0011] Optionally, the annular valve plate includes a first sleeve and a second sleeve. One end of the first sleeve is provided with a top plate, and a mounting post is provided on the top plate. The first sleeve is fixed to the valve core by the mounting post. The second sleeve is sleeved on the outer wall of the first sleeve. The first sleeve is provided with a plurality of first openings, and the second sleeve is provided with a plurality of second openings. The first openings and the second openings correspond one-to-one, and the first openings and the corresponding second openings form the flow window.

[0012] Optionally, the outer wall of the first sleeve is further provided with an annular mounting groove, the annular mounting groove being close to the top plate and communicating with the end face of the top plate, and the inner wall of one end of the second sleeve is provided with a mounting ring, the mounting ring being located in the annular mounting groove, and the first sleeve pressing the mounting ring onto the valve core.

[0013] Optionally, the valve core has a mounting hole on its end face facing the discharge port, the outer wall of the mounting post has threads, and the mounting post is threaded inside the mounting hole.

[0014] Optionally, the valve core 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, with the insertion end of the anti-rotation pin located in the positioning groove.

[0015] Optionally, the valve seat includes a valve seat body and a valve seat ring. The valve seat body has a cylindrical structure and is mounted on the valve body via the valve seat ring. The valve seat ring is fixed to the valve body by bolts, and multiple anti-rotation units are provided between the valve seat body and the valve seat ring.

[0016] Optionally, the anti-rotation unit is a limiting bolt, which is fixed on the valve seat ring. The outer wall of the valve seat body is provided with multiple limiting holes, and the limiting bolt extends into the corresponding limiting hole.

[0017] Optionally, a sealing structure is also provided between the valve body and the valve stem.

[0018] As described above, the single-seat regulating valve for high-viscosity media of this invention has the following beneficial effects: 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 and reduce the direct impact of the fluid on the valve core. The inclined inner wall of the groove on the upper valve cover allows sufficient space for the medium to overflow during the extension and retraction of the valve stem, preventing accumulation. Simultaneously, the annular valve plate is inserted into the valve seat and has multiple flow windows. These flow windows may help disperse the fluid, reduce the flow velocity and impact force of each stream, thereby reducing scouring and minimizing the scouring effect on the valve core and valve seat. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the regulating valve in the closed state according to one embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the regulating valve in the open state according to one embodiment of the present invention.

[0021] Figure 3 The diagram shown is a cross-sectional view of the valve core and the annular composite valve plate in one embodiment of the present invention.

[0022] Figure 4 The diagram shown is a cross-sectional view of the valve seat in one embodiment of the present invention.

[0023] Part Number Explanation

[0024] 1 Valve body

[0025] 2 valve stems

[0026] 201 valve core

[0027] 3. Annular valve plate

[0028] 301 First Sleeve

[0029] 302 Second Sleeve

[0030] 4 valve seats

[0031] 401 Valve Seat Body

[0032] 402 valve seat ring

[0033] a Overcurrent window Detailed Implementation

[0034] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0035] Please see Figures 1 to 4 It should be noted that the illustrations provided in this embodiment are merely schematic representations of the basic concept of this utility model. The illustrations only show components relevant to this utility model and are not drawn according to the actual number, shape, and size of the components in implementation. In implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may also be more complex. The structures, proportions, sizes, etc., shown in the accompanying drawings are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0036] Please see Figures 1 to 4 As shown, this utility model provides a single-seat regulating valve for high-viscosity media applications, comprising:

[0037] Valve body 1, wherein 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;

[0038] The valve body 1 includes a valve body body and an upper valve cover. The valve body body is provided with an installation window, which is directly opposite to the discharge port. The upper valve cover is disposed on the installation window.

[0039] The valve stem 2 has a groove on the end face of the upper valve cover facing the inner cavity of the valve body 1. The bottom of the groove has a through hole. The valve stem 2 is inserted into the valve body 1 through the through hole. The diameter of the groove opening is larger than the diameter of the groove bottom.

[0040] The valve stem 2 is provided with a valve core at its insertion end, and an annular valve plate 3 is installed on the valve core. An annular valve seat 4 is provided on the discharge port. The valve seat 4 has an annular structure, and the outer wall of the valve seat 4 is attached to and connected to the inner wall of the discharge port. The annular valve plate 3 is used to insert into the valve seat, and multiple flow windows a are provided on the annular valve plate 3.

[0041] It should also be noted that in this application, a groove is provided on the upper valve cover, and the groove opening is larger than its bottom diameter to increase the cavity and prevent the medium from accumulating in the groove between the valve core 201 and the upper valve cover due to the extension and retraction of the valve stem 2.

[0042] For example, the outer diameter of the valve core 201 gradually increases from the end near the upper valve cover to the end near the discharge port, and the end face of the valve core 201 away from the annular valve plate 3 is inclined and transitions.

[0043] It should also be noted that the purpose of tilting the outer wall of the valve core 201 is to prevent the medium adhering to the outer wall of the valve core 201 from accumulating between the valve core 201 and the upper valve cover as the valve core 201 moves, which would cause the valve core 201 to not open properly and affect the medium flow rate. At the same time, it provides a flow channel for the medium and prevents it from accumulating on the valve core 201.

[0044] For example, the maximum outer diameter of the valve core 201 is smaller than the groove opening diameter.

[0045] It should also be noted that the maximum outer diameter of the valve core 201 is smaller than the groove diameter in order to avoid the accumulation of medium on the valve core 201 due to its volume or shape.

[0046] For example, the annular valve plate 3 includes a first sleeve 301 and a second sleeve 302. The first sleeve 301 has a top plate at one end and a mounting post on the top plate. The first sleeve 301 is fixed to the valve core by the mounting post. The second sleeve 302 is sleeved on the outer wall of the first sleeve 301. The first sleeve 301 has a plurality of first openings and the second sleeve 302 has a plurality of second openings. The first openings and the second openings correspond one-to-one. The first openings and the corresponding second openings form the flow window a.

[0047] It should also be noted that the purpose of using a composite design of the first sleeve 301 and the second sleeve 302 for the annular valve plate 3 is to improve the structural strength of the annular valve plate 3, thereby enhancing its wear resistance and erosion resistance.

[0048] In this application, the outer second sleeve 302 can be made of a material with high hardness, such as silicon carbide and composite ceramic materials.

[0049] The flow window a opens as the position between the valve plate 3 and the valve seat 4 changes during the extension and retraction of the valve stem 2.

[0050] 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, and 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.

[0051] It should also be noted that the purpose of providing an annular mounting groove on the outer wall of the first sleeve 301 is to provide axial limiting when connecting the second sleeve 302, so as to avoid axial loosening between the first sleeve 301 and the second sleeve 302. At the same time, the annular mounting groove can also provide positioning for the second sleeve 302, ensuring that the position of the second sleeve 302 remains consistent each time it is installed, and ensuring that the second sleeve 302 is installed in place.

[0052] For example, the valve core has a mounting hole on its end face facing the discharge port, the outer wall of the mounting post has threads, and the mounting post is threaded inside the mounting hole.

[0053] It should also be noted that the purpose of providing a mounting hole on the end face of the valve core 201 facing the discharge port is to provide a mounting position for the first sleeve 301 and ensure a reliable connection between the first sleeve 301 and the valve core 201. The use of a threaded connection ensures that disassembly is convenient when replacing the first sleeve 301.

[0054] For example, the valve core 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, with the insertion end of the anti-rotation pin located in the positioning groove.

[0055] It should also be noted that the purpose of providing positioning holes, positioning grooves and anti-rotation pins on the valve core 201 is to prevent the mounting column from rotating axially in the corresponding mounting holes, and to avoid axial rotation between the first sleeve 301 and the valve core 201.

[0056] For example, the valve seat 4 includes a valve seat body 401 and a valve seat ring 402. The valve seat body 401 has a cylindrical structure. The valve seat body 401 is disposed on the valve body through the valve seat ring 402. The valve seat ring 402 is fixed on the valve body by bolts. Multiple anti-rotation units are provided between the valve seat body 401 and the valve seat ring 402.

[0057] It should also be noted that the valve seat ring 402 is disposed 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, reduce the friction between the valve seat body 401 and the valve body 1, reduce the wear of the valve, and the valve seat ring 402 plays a role in balancing the axial pressure of the packing gland, ensuring that the packing is subjected to uniform force, and preventing deformation or damage due to excessive local pressure.

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

[0059] It should also be noted that the purpose of setting the limit bolt is to prevent radial rotation between the valve seat body 401 and the valve seat ring 402, thereby improving the overall stability of the structure.

[0060] For example, a sealing structure is also provided between the valve body and the valve stem.

[0061] It should also be noted that the sealing structure provided between the valve body 1 and the valve stem 2 includes a packing seal. A cover plate is provided on the valve body 1, and the valve stem 2 extends from the middle of the cover plate. A compression spring is also fitted on the valve stem 2, which is located between the cover plate and the packing seal. A sealing ring is also fitted on the valve stem 2. The sealing ring is subjected to the pressure of the compression spring, which applies pressure to the packing to ensure the tightness of the sealing structure.

[0062] For example, the inner wall of the valve seat body 401 near the valve core 201 matches and fits against the outer wall of the annular valve plate 3, the inner wall of the valve seat body 401 near the valve core 201 is used to guide the annular valve plate 3, and the valve seat body 401 is inclined and transitions away from the inner wall of the valve core 201.

[0063] In summary, the single-seat regulating valve for high-viscosity media of this invention has the following advantages: The valve body has an inlet and an outlet, with the inlet's axis perpendicular to the outlet's axis. This helps to change the flow direction of the fluid and reduce the direct impact of the fluid on the valve core. The inclined design of the groove inner wall on the upper valve cover allows sufficient space for the medium to overflow during the extension and retraction of the valve stem 2, preventing accumulation. Simultaneously, the annular valve plate 3 is inserted into the valve seat and has multiple flow windows a. These flow windows a may help disperse the fluid, reduce the flow velocity and impact force of each stream, thereby reducing scouring and minimizing the scouring effect on the valve core 201 and valve seat 4.

[0064] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A single-seat regulating valve for high-viscosity media applications, characterized in that, include: The valve body has an inlet and an outlet, and the centerline of the inlet is perpendicular to the centerline of the outlet. A valve stem is inserted into the valve body. The insertion end of the valve stem is provided with a valve core. An annular valve plate is installed on the valve core. An annular valve seat is provided on the discharge port. The valve seat has an annular structure. The outer wall of the valve seat is attached to and connected to the inner wall of the discharge port. The annular valve plate is used to be inserted into the valve seat. Multiple flow windows are provided on the annular valve plate. The inner ring of the valve seat is provided with a guide portion, which matches and fits against the outer wall of the annular valve plate. The guide portion is used to guide the annular valve plate.

2. The single-seat regulating valve for high-viscosity media as described in claim 1, characterized in that: The valve body includes a valve body and an upper valve cover. The valve body has an installation window that is directly opposite the discharge port. The upper valve cover is disposed on the installation window. The end face of the upper valve cover facing the inner cavity of the valve body has a groove. The bottom of the groove has a through hole. The valve stem is inserted into the valve body through the through hole. The diameter of the groove opening is larger than the diameter of the groove bottom. The outer diameter of the valve core gradually increases from the end near the upper valve cover to the end near the discharge port. The end face of the valve core away from the annular valve plate is inclined.

3. A single-seat regulating valve for high-viscosity media as described in claim 2, characterized in that: The maximum outer diameter of the valve core is smaller than the groove diameter.

4. A single-seat regulating valve for high-viscosity media as described in claim 3, characterized in that: The annular valve plate includes a first sleeve and a second sleeve. The first sleeve has a top plate at one end and a mounting post on the top plate. The first sleeve is fixed to the valve core by the mounting post. The second sleeve is sleeved on the outer wall of the first sleeve. The first sleeve has a plurality of first openings and the second sleeve has a plurality of second openings. The first openings and the second openings correspond one-to-one, and the first openings and the corresponding second openings form the flow window.

5. A single-seat regulating valve for high-viscosity media as described in claim 4, characterized in that: The outer wall of the first sleeve is also provided with an annular mounting groove, which 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, which is located in the annular mounting groove. The first sleeve presses the mounting ring onto the valve core.

6. A single-seat regulating valve for high-viscosity media as described in claim 5, characterized in that: The valve core has a mounting hole on its end face facing the discharge port, and the outer wall of the mounting post has threads, with the mounting post threads disposed within the mounting hole.

7. A single-seat regulating valve for high-viscosity media as described in claim 6, characterized in that: The valve core 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, with the insertion end of the anti-rotation pin located in the positioning groove.

8. A single-seat regulating valve for high-viscosity media as described in claim 7, characterized in that: The valve seat includes a valve seat body and a valve seat ring. The valve seat body has a cylindrical structure and is mounted on the valve body via the valve seat ring. The valve seat ring is fixed to the valve body by bolts. Multiple anti-rotation units are provided between the valve seat body and the valve seat ring.

9. A single-seat regulating valve for high-viscosity media as described in claim 8, characterized in that: The anti-rotation unit is a limiting bolt, which is fixed on the valve seat ring. The outer wall of the valve seat body is provided with multiple limiting holes, and the limiting bolt extends into the corresponding limiting hole.

10. A single-seat regulating valve for high-viscosity media as described in claim 7, characterized in that: A sealing structure is also provided between the valve body and the valve stem.

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