CN216112274U

CN216112274U - Special regulating valve resistant to scouring

Info

Publication number: CN216112274U
Application number: CN202122288009.5U
Authority: CN
Inventors: 金浩军; 姜雅周
Original assignee: Yantai Kingway Science & Technology Co ltd
Current assignee: Yantai Kingway Science & Technology Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-03-22
Anticipated expiration: 2031-09-22

Abstract

The utility model discloses a special anti-scouring regulating valve which comprises a valve body, wherein the center of the valve body is a cylindrical hollow cavity, a cylindrical movable valve core tightly attached to the inner wall of the hollow cavity is arranged in the hollow cavity, the top of the hollow cavity is fixedly provided with an upper valve cover through a fastener, the bottom of the hollow cavity is fixedly connected with a lower valve cover, the left side of the hollow cavity is fixedly connected with a left flange, the right side of the hollow cavity is provided with a right valve seat, the outer side of the right valve seat is connected with a right flange, the left flange and the right flange are symmetrically arranged along the central line of the valve body, the left flange, the inner cavity of the valve body, the right valve seat and the right flange are mutually communicated to form a flow channel for medium circulation, a valve rod is movably connected in the upper valve cover, a packing box is arranged between the inner wall of the valve rod and the outer wall of the valve rod, the top of the hollow cavity penetrates through the upper valve cover and is connected with an executing mechanism, and a connecting piece is arranged at the bottom of the valve rod and connected with the top of the movable valve core through a connecting piece. The utility model solves the technical problem that the valve is easy to be blocked in a complex medium circulation environment, keeps the long-term effectiveness of the valve seal and prolongs the service life of the valve.

Description

Special regulating valve resistant to scouring

Technical Field

The utility model relates to the technical field of valves, in particular to a special regulating valve resistant to scouring.

Background

In the industries of coal chemical industry, silicification, mine metallurgy, electric power environmental protection and the like, a large amount of gas-solid, liquid-solid, gas-liquid-solid three-phase media are conveyed, particularly under the working condition of hard particle media, most of the currently used valves such as hard sealing ball valves, butterfly valves, sliding plate valves, gate valves and the like are difficult to maintain, the problems of short service life and difficult maintenance are more or less caused, particularly, the sealing requirements of partial working conditions with strong erosion are strict, and the situations that the media are viscous, easy to agglomerate, easy to scale and easy to crystallize or contain large particles exist, so that the erosion is serious, and the situation that various valves are blocked is often caused.

Taking the hard seal ball valve which is most used under the current working conditions as an example, the analysis is as follows: in the opening and closing process of the ball valve, the medium is easy to enter the valve cavity and is accumulated in the valve cavity; when the temperature of the medium is reduced, certain medium is solidified to lock the opening and closing piece, so that serious consequences such as valve blocking and the like are easily caused, when high-hardness granular medium flows in a pipeline at a high speed, the sealing surface of a valve seat is easily damaged or a sprayed layer on the surface of a ball body falls off, the sealing effect of the valve is further influenced, and when the medium is serious, the sealing failure of the valve can be caused.

After the sliding plate valve operates for a period of time, the middle cavity is filled with materials, so that the valve is blocked; the sliding plate and the clamping plate are seriously abraded, and in the system, due to the physical and chemical properties of fluid, the valves often have the defects that a valve inner part or a valve seat rear flow passage is seriously washed and cavitated, and further the valves and even the whole conveying system cannot normally operate.

Besides poor sealing performance, the butterfly valve, the gate valve and the like are also easy to wash a flow channel due to serious bias flow of medium fluid, so that the pipeline needs to be frequently replaced.

Therefore, a valve which can be used as a regulating valve and a switch valve, has no material accumulation in a middle cavity, is not suitable for blocking, and has no medium scouring a sealing surface is needed to ensure long-period operation of the system.

Disclosure of Invention

In order to solve the technical problems related to the background technology, the utility model aims to provide the special scouring-resistant regulating valve which is simple in structure and convenient to operate, solves the technical problem that the valve is easy to block and jam in a complex medium circulation environment, can keep the long-term effectiveness of valve sealing, and prolongs the service life of the valve.

The utility model adopts the following technical scheme: a special regulating valve resistant to scouring comprises a valve body, wherein the center of the valve body is a cylindrical hollow cavity, a cylindrical movable valve core tightly attached to the inner wall of the hollow cavity is arranged in the hollow cavity of the valve body, the top of the valve body is fixedly provided with an upper valve cover through a fastener, and the bottom of the valve body is fixedly connected with a lower valve cover; the left side of the valve body is fixedly connected with a left flange; a right valve seat is arranged on the right side of the valve body; the outer side of the right valve seat is connected with a right flange, the left flange and the right flange are symmetrically arranged along the center line of the valve body, and the left flange, the inner cavity of the valve body, the right valve seat and the right flange are communicated with each other to form a flow channel for medium circulation; the valve rod is movably connected in the upper valve cover, and a stuffing box for sealing is arranged between the inner wall of the upper valve cover and the outer wall of the valve rod; the top of the valve rod penetrates out of the upper valve cover and is connected with the actuating mechanism, a connecting piece is arranged at the bottom of the valve rod, and the valve rod is connected with the top of the movable valve core through the connecting piece and is used for driving the movable valve core to perform vertical linear displacement between the inner cavity of the valve body and the inner cavity of the upper valve cover so as to control the opening and closing of the flow channel.

As an optimized scheme, a sealing ring is arranged between the movable valve core and the inner wall of the valve body.

As an optimized scheme, an elastic component is arranged between the outer side end face of the right valve seat and the inner wall of the right flange.

As an optimized scheme, lining structures for sealing are arranged between the inner walls of the left flange and the right flange and between the inner wall of the valve body and the outer wall of the right valve seat.

As an optimized scheme, the right valve seat, the movable valve core and the lining structure are all made of ceramic materials.

As an optimized scheme, graphite rings are arranged between the upper valve cover, the lower valve cover and the valve body in a sealing mode.

As an optimized scheme, the stuffing box comprises a stuffing cover, a stuffing cavity and stuffing arranged in the stuffing cavity from top to bottom in sequence, wherein the stuffing cover is connected with the upper end face of the upper valve cover and sleeved on the valve rod.

Compared with the prior art, the utility model has the advantages that:

the cylindrical movable valve core and the edge of the valve seat flow channel hole form surface sealing, so that the opening and closing of a fluid medium can be realized, and a better throttling effect is achieved; the sealing surface and the flow channel are vertically arranged, so that the scouring of a fluid medium to the sealing pair when the valve is opened and closed can be reduced, and the service life of the valve can be prolonged.

According to the utility model, the movable valve core and the valve body are sealed by the sealing ring, so that a fluid medium can be prevented from reaching the cavity on the movable valve core, and the problem that the valve cannot be opened or cannot be opened in place due to the fact that impurities in the fluid medium are agglomerated or piled up at the upper cavity can be avoided; in addition, the up-and-down linear motion of the movable valve core in the inner wall of the valve body can also generate a friction cleaning effect on a sealing surface, so that the occurrence of impurity scaling or blockage of a flow passage can be further reduced.

The valve cover and the valve body are sealed by the graphite ring, and the graphite ring can always keep a sealing state in a high-temperature environment; therefore, the sealing performance of the valve is improved, the service life of the valve is prolonged, and the fireproof requirement of the valve can be met.

The internal main components of the valve are made of ceramic materials, and the natural wear-resistant and corrosion-resistant properties of the ceramic are utilized, so that the wear-resistant and corrosion-resistant properties of the whole valve are realized, and the scouring and cavitation action of solid particles on the internal components and the flow passage of the valve under a high pressure difference environment is avoided, so that the damage to the internal components and the flow passage is reduced.

Drawings

FIG. 1 is a cross-sectional view of a flush resistant dedicated regulator valve of the present invention;

wherein, 1-valve body, 2-movable valve core, 3-upper valve cover, 4-lower valve cover, 5-right valve seat, 6-left flange^‘Right flange, 7 runner, 8 valve rod, 9 stuffing box, 901 stuffing gland, 902 stuffing cavity, 10 connecting piece, 11 sealing ring, 12 elastic part, 13 lining structure and 14 graphite ring.

Detailed Description

Hereinafter, in order to facilitate the technical solution of the present invention for those skilled in the art to understand, further description will be made with reference to the accompanying drawings. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention.

In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the utility model. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in figure 1, the sectional view of the special anti-scouring regulating valve comprises a valve body 1, wherein the center of the valve body 1 is a cylindrical hollow cavity, a cylindrical movable valve core 2 tightly attached to the inner wall of the hollow cavity of the valve body 1 is arranged in the hollow cavity of the valve body 1, an upper valve cover 3 is fixedly arranged at the top of the valve body 1 through a fastener, a lower valve cover 4 is fixedly connected to the bottom of the valve body 1, a left flange 6 is fixedly connected to the left side of the valve body 1, a right valve seat 5 is arranged on the right side of the valve body 1, and a right flange 6 is connected to the outer side of the right valve seat 5^‘ Left flange 6 and right flange 6^‘Symmetrically arranged along the central line of the valve body 1, wherein, the left flange 6, the inner cavity of the valve body 1, the right valve seat 5 and the right flange 6^‘The flow passages 7 are communicated with each other to form a flow passage 7 for the fluid medium to flow, the holes of the flow passage 7 can be cylindrical, but are not limited to various special-shaped holes such as square, rectangle, triangle, V-shaped, U-shaped, fan-shaped and the like, so as to meet different adjustment requirements. As shown in fig. 1, a valve rod 8 is movably connected in the upper valve cover 3, a stuffing box 9 for sealing is arranged between the inner wall of the upper valve cover 1 and the outer wall of the valve rod 8, the top of the valve rod 8 penetrates out of the upper valve cover 3 and is connected with an external actuating mechanism, the actuating mechanism can be a driving motor or other driving equipment, a connecting piece 10 is arranged at the bottom of the valve rod 8, the valve rod 8 is connected with the top of the movable valve element 2 through the connecting piece 10, and the valve rod 8 is driven by the actuating mechanism to drive the movable valve element 2 to perform vertical linear displacement between the inner cavity of the valve body 1 and the inner cavity of the upper valve cover 3 so as to control the opening and closing of the flow channel 7. In this embodiment, the cylindrical movable valve element 2 is used for performing vertical linear displacement motion in the inner cavities of the valve body 1 and the upper valve cover 3, and a surface sealing structure is generated at the edge of a hole in the valve body 1 together with the flow channel 7, so that the effects of throttling, opening and closing the fluid medium are realized, and the vertical arrangement between the sealing surface and the flow channel can reduce the scouring of the fluid medium on the sealing pair when the valve is opened and closed, and prolong the service life of the valve. Meanwhile, the movable valve element 2 can generate friction cleaning effect on the sealing surface between the inner cavity of the valve body 1 and the inner cavity of the upper valve cover 3 through vertical linear motion, and the occurrence of the condition that impurities are scaled on the sealing surface or the flow passage 7 is blocked can be further reduced.

In this embodiment, as shown in fig. 1, the stuffing box 9 includes a stuffing cover 901, a stuffing chamber 902, and stuffing chambers 902 that are sequentially arranged from top to bottom, where the stuffing cover 901 is connected with the upper end surface of the upper valve cover 3 and is sleeved on the valve rod 8 to ensure that the valve rod 8 can maintain a longer sealing effect when moving continuously up and down under the driving of the actuator.

As a modified solution of this embodiment, as shown in fig. 1, a sealing ring 11 is disposed between the movable valve element 3 and the inner wall of the valve body 1, so that a fluid medium can be prevented from reaching the cavity above the movable valve element 2, and the problem that the valve cannot be opened or opened in place due to agglomeration or accumulation of the fluid medium in the cavity is avoided, and naturally, the sealing ring 11 may also be sealed in other forms, as long as the purpose of preventing the fluid medium from reaching the cavity above the movable valve element 2 can be achieved.

As a further improvement of the present embodiment, as shown in FIG. 1, the outer end surface of the right valve seat 5 and the right flange 6^‘An elastic member 12 is arranged between the inner walls, the elastic member 12 can be a spring or a disc spring, etc., one end of the elastic member 12 is abutted against the outer side end face of the right valve seat 5, and the other end is abutted against the right flange 6^‘The inner wall of (2) is abutted, under the action of the elastic component (12), when the movable valve core (2) closes the flow channel (7) downwards, the right valve seat (5) can be always tightly attached to the outer wall of the movable valve core (2), so that the valve can achieve a more effective sealing effect.

In addition, in order to enhance the sealing effect of the device of the present invention, as shown in FIG. 1, the left flange 6 and the right flange 6 are provided^‘And a lining structure 13 for sealing is arranged between the inner wall of the valve body 1 and the outer wall of the right valve seat 5.

In the above embodiment and the improved scheme thereof, the key components of the valve, such as the right valve seat 5, the movable valve core 2 and the lining structure 13, are made of ceramic materials, so that the natural wear-resistant and corrosion-resistant properties of the ceramic can be fully utilized, and the overall wear-resistant and corrosion-resistant properties of the valve are realized. Meanwhile, the solid particles can be prevented from scouring and cavitation the valve internals and the flow passages under the high pressure difference environment, so that the damage to the valve internals and the flow passages is reduced. In addition, in the embodiment and the improved scheme thereof, the graphite ring 14 is used for sealing between the upper valve cover 3 and the lower valve cover 4 and the valve body 1, and when the valve body is in a high-temperature environment, the graphite ring 14 can always keep a sealing state, so that the sealing performance of the valve is improved, the service life of the valve is prolonged, and the fireproof requirement of the valve can be met.

When the special anti-scouring regulating valve is used, the special anti-scouring regulating valve passes through the left flange 6 and the right flange 6^‘The valve is arranged on a pipeline, an actuating mechanism is arranged on a valve rod 8, the actuating mechanism is started to drive the valve rod 8 to move up and down, so that a connecting piece 10 connected with the bottom of the valve rod 8 drives a movable valve core 2 to move up and down, the opening or closing of a flow passage 7 of the valve is realized, when the movable valve core 2 performs vertical linear displacement motion in inner cavities of a valve body 1 and an upper valve cover 3, a surface sealing structure is generated between the movable valve core 2 and the edge of a hole of the flow passage 7 in the valve body 1, and the throttling, opening and closing of medium fluid are realizedThe effect that closes, simultaneously, the up-and-down linear motion of activity case 2 between 1 inner chamber of valve body and 3 inner chambers of upper valve cover can also produce the clean effect of friction to sealed face, can further reduce impurity scale deposit or take place to the condition that 7 blockked up of flow passage.

The utility model has the advantages of ingenious and novel design, simple structure, good sealing performance and long service life, and ensures that the valve is more reliable in working. The utility model adopts the cylindrical movable valve core 2 and the hole edge of the flow channel 7 to generate surface sealing, can realize the opening and closing of the flow channel 7 and can achieve better throttling effect, meanwhile, the sealing ring 11 is used for sealing between the movable valve core 2 and the valve body 1, and can prevent fluid medium from reaching the cavity on the movable valve core 2, thereby avoiding the problem that the valve cannot be opened or opened in place due to the agglomeration or accumulation of impurities in the fluid medium at the upper cavity, in addition, the up-and-down linear motion of the movable valve core 2 in the inner wall of the valve body 1 can also perform friction cleaning effect on the sealing surface, and further reducing the occurrence of impurity scaling or channel blockage. According to the utility model, a sealing structure is formed by the graphite ring 14 between the upper valve cover 3 and the lower valve cover 4 and the valve body 1, and the graphite ring 14 can always keep a sealing state in a high-temperature environment; therefore, the sealing performance of the valve is improved, the service life of the valve is prolonged, and the fireproof requirement of the valve can be met. The ceramic material is used as a main component, so that the valve internals and the flow passage 7 can be prevented from being washed and eroded by solid particles under a high-pressure difference environment, and damage to the valve internals and the flow passage can be reduced. The valve not only has a cut-off function, but also can realize the adjustment of various flow characteristics according to the requirements of customers by designing the shapes of various throttling holes.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. A special regulating valve with scouring resistance is characterized by comprising:

the valve comprises a valve body, wherein the center of the valve body is a cylindrical hollow cavity, a cylindrical movable valve core closely attached to the inner wall of the hollow cavity is arranged in the hollow cavity of the valve body, the top of the valve body is fixedly provided with an upper valve cover through a fastener, and the bottom of the valve body is fixedly connected with a lower valve cover; the left side of the valve body is fixedly connected with a left flange; a right valve seat is arranged on the right side of the valve body; the outer side of the right valve seat is connected with a right flange, the left flange and the right flange are symmetrically arranged along the center line of the valve body, and the left flange, the inner cavity of the valve body, the right valve seat and the right flange are communicated with each other to form a flow channel for medium circulation;

the valve rod is movably connected in the upper valve cover, and a stuffing box for sealing is arranged between the inner wall of the upper valve cover and the outer wall of the valve rod;

the top of the valve rod penetrates out of the upper valve cover and is connected with the actuating mechanism, a connecting piece is arranged at the bottom of the valve rod, and the valve rod is connected with the top of the movable valve core through the connecting piece and is used for driving the movable valve core to perform vertical linear displacement between the inner cavity of the valve body and the inner cavity of the upper valve cover so as to control the opening and closing of the flow channel.

2. The flush resistant dedicated regulator valve of claim 1, wherein: and a sealing ring is arranged between the movable valve core and the inner wall of the valve body.

3. The flush resistant dedicated regulator valve of claim 2, wherein: and an elastic component is arranged between the outer side end face of the right valve seat and the inner wall of the right flange.

4. The flush resistant dedicated regulator valve of claim 3, wherein: and lining structures for sealing are arranged between the inner walls of the left flange and the right flange and between the inner wall of the valve body and the outer wall of the right valve seat.

5. The flush resistant dedicated regulator valve of claim 4, wherein: the right valve seat, the movable valve core and the lining structure are all made of ceramic materials.

6. The flush resistant dedicated regulator valve of claim 5, wherein: graphite rings are hermetically arranged among the upper valve cover, the lower valve cover and the valve body.

7. The flush-resistant special regulating valve according to any one of claims 1 to 6, characterized in that: the packing box comprises a packing gland, a packing cavity and packing arranged in the packing cavity from top to bottom in sequence, wherein the packing gland is connected with the upper end face of the upper valve cover and sleeved on the valve rod.