CN218031487U

CN218031487U - Effectual control valve of leakproofness

Info

Publication number: CN218031487U
Application number: CN202222436586.9U
Authority: CN
Inventors: 郑华庭
Original assignee: Shaanxi Xunuo Technology Co ltd
Current assignee: Shaanxi Xunuo Technology Co ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2022-12-13
Anticipated expiration: 2032-09-14

Abstract

The utility model belongs to the field of valves, and particularly discloses a control valve with good sealing effect, which comprises a valve body and a valve head, wherein a valve rod is inserted into the middle part of the valve head, a piston is arranged at the lower end of the valve rod, and the interior of the piston is a buffer cavity with an oval hollow structure; the inner wall of the valve cavity is provided with a limiting ring, and the top of the piston is provided with a threaded sealing ring which is in threaded connection with the inner wall of the sealing sleeve; an auxiliary sealing ring is arranged in the inlet. The utility model arranges the inside of the piston into a hollow buffer cavity with an oval structure, and embeds a stainless steel reinforced layer, so as to ensure the strength of the whole piston, and simultaneously ensure that the piston has certain outward expansion capability; the threaded sealing ring effectively prevents water from seeping in a gap between the piston and the valve cavity; the end face of the auxiliary sealing ring is provided with a jacking face of an arch structure, and when the piston expands, the auxiliary sealing ring can be abutted and jacked against the side face of the piston, so that the sealing effect of an inlet is enhanced.

Description

Effectual control valve of leakproofness

Technical Field

The utility model relates to a valve field specifically is an effectual control valve of leakproofness.

Background

The valve is a pipeline accessory used for opening and closing a pipeline, controlling the flow direction, adjusting and controlling parameters (temperature, pressure and flow) of a conveying medium, has the functions of stopping, adjusting, guiding, preventing countercurrent, stabilizing pressure, shunting or overflowing and relieving pressure and the like, and can be used for controlling the flow of various types of fluid such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like.

After the existing control valve is used for a period of time, a sealing piston of the existing control valve is slightly abraded, the sealing performance of the existing control valve when the valve is closed is poor, the condition of liquid seepage is easy to occur, a sealing structure has to be frequently replaced, and the service life is short.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an effectual control valve of leakproofness to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a control valve with good sealing performance comprises a valve body and a valve head, wherein the valve body is hollow to form a valve cavity, the valve head is installed at the upper end of the valve cavity, the lower end of the valve cavity is an outlet, and an inlet communicated with the interior of the valve cavity is vertically arranged in the middle of the side face of the valve body; a valve rod is inserted into the middle part of the valve head, the lower end of the valve rod is arranged in the valve cavity and is provided with a piston attached to the inner wall of the valve cavity, and the interior of the piston is a buffer cavity with an oval hollow structure; a circle of raised limiting rings are arranged on the inner wall of the valve cavity at the position below the inlet and used for limiting the abutting of the piston, a threaded sealing ring is arranged on a valve rod at the top of the piston, a layer of sealing sleeve is embedded on the inner wall of the valve cavity at the position above the inlet, and the threaded sealing ring is in threaded connection with the inner wall of the sealing sleeve; and an auxiliary sealing ring with an annular structure is arranged in the inlet.

Preferably, the outer wall of the valve rod is of a threaded structure, and the middle part of the valve head is provided with a through hole in threaded connection with the valve rod.

Preferably, the upper end of the valve rod extends out of the valve head and is provided with a rotating handle.

Preferably, the inside of the buffer cavity is embedded with a stainless steel reinforcing layer which is attached to the inner wall of the buffer cavity and has an oval structure.

Preferably, when the piston is opposite to the inlet and is blocked, the tip of the buffer cavity with the oval structure inside is directed to the inlet.

Preferably, the auxiliary sealing ring is arranged at one end of the inlet close to the valve cavity, the inner wall of the auxiliary sealing ring is provided with an inclined guide inclined plane, the end with the smaller inner diameter faces the valve cavity, the end face of the auxiliary sealing ring facing the valve cavity is arched outwards to form a ring of jacking face, and the jacking face is flush with the inner wall of the valve cavity in a natural state.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses with the inside cavity cushion chamber that sets up to oval structure of piston to embedded stainless steel enhancement layer guarantees when the holistic intensity of piston, makes the piston have certain outside ability that expands, is provided with the round spacing ring at the valve pocket inner wall for with the piston butt, make the piston compression, its side outwards expands, can seal better, utilizes the deformation characteristic of cavity piston, can allow the wearing and tearing of certain degree, the life of extension piston.

2. The utility model arranges the thread sealing ring on the top of the piston, and the sealing sleeve embedded in the valve cavity is connected with the thread, thereby effectively preventing the water seepage in the clearance between the piston and the valve cavity; the auxiliary sealing ring is embedded in the inner wall of the inlet, the end face of the auxiliary sealing ring is provided with a jacking surface of an arch structure, and when the piston expands, the auxiliary sealing ring can be abutted against the side face of the piston to jack up, so that the sealing effect at the inlet is enhanced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the specific structure of the auxiliary seal ring of the present invention.

In the figure: 1. a valve body; 2. a valve cavity; 3. a valve head; 4. an outlet; 5. an inlet; 6. a valve stem; 7. a piston; 8. a buffer chamber; 9. a stainless steel reinforcing layer; 10. a limiting ring; 11. a threaded seal ring; 12. a sealing sleeve; 13. a handle is rotated; 14. an auxiliary seal ring; 15. a guide slope; 16. and (5) a top tight surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Referring to fig. 1-2, the present invention provides a technical solution: a control valve with good sealing performance comprises a valve body 1 and a valve head 3, wherein the valve body 1 is hollow to form a valve cavity 2, the valve head 3 is installed at the upper end of the valve cavity 2, the lower end of the valve head 3 is an outlet 4, and an inlet 5 communicated with the interior of the valve cavity 2 is vertically arranged in the middle of the side face of the valve body 1; a valve rod 6 is inserted into the middle part of the valve head 3, the lower end of the valve rod 6 is arranged in the valve cavity 2 and is provided with a piston 7 attached to the inner wall of the valve cavity 2, and the interior of the piston 7 is a buffer cavity 8 with an oval hollow structure; a circle of raised limiting rings 10 are arranged on the inner wall of the valve cavity 2 at the position below the inlet 5 and used for limiting the abutting of the piston 7, a threaded sealing ring 11 is arranged on the valve rod 6 at the top of the piston 7, a layer of sealing sleeve 12 is embedded on the inner wall of the valve cavity 2 at the position above the inlet 5, and the threaded sealing ring 11 is in threaded connection with the inner wall of the sealing sleeve 12; an auxiliary sealing ring 14 with an annular structure is arranged in the inlet 5.

Furthermore, the outer wall of the valve rod 6 is of a threaded structure, and a through hole in threaded connection with the valve rod 6 is formed in the middle of the valve head 3.

Further, the upper end of the valve rod 6 extends out of the valve head 3 and is provided with a rotating handle 13.

Furthermore, the inside adaptation embedding of cushion chamber 8 has the stainless steel enhancement layer 9 with the oval structure of its inner wall laminating, increases the intensity of piston 7, reduces deformability.

Further, when the piston 7 is opposite to the inlet 5 for blocking, the tip of the buffer cavity 8 with an internal oval structure points to the inlet 5.

Furthermore, the auxiliary sealing ring 14 is arranged at one end of the inlet 5 close to the valve cavity 2, the inner wall of the auxiliary sealing ring is provided with an inclined guide inclined surface 15, the end with the smaller inner diameter faces the valve cavity 2, the end surface of the auxiliary sealing ring 14 facing the valve cavity 2 is arched outwards to form a ring of jacking surface 16, and in a natural state, the jacking surface 16 is flush with the inner wall of the valve cavity 2.

The working principle is as follows: the opening and closing of the valve body 1 are controlled by rotating the rotating handle 13, and when the rotating handle 13 rotates, the valve rod 6 ascends and descends in the valve cavity 2 to drive the piston upper 7 to ascend and descend, so that the plugging area at the inlet 5 is adjusted, and the flow rate is adjusted; the threaded sealing ring 11 is fixed on the valve rod 6, rotates along with the rotation of the valve rod 6, is in threaded connection with a sealing sleeve 12 embedded in the inner wall of the valve cavity 2, and is embedded in a threaded structure, so that water seepage in a gap between the piston 7 and the valve cavity 2 is effectively prevented; when the piston 7 rotates to the position abutted to the limiting ring 10, the rotating handle 13 continues to rotate, so that the piston is pressed to generate certain deformation, expands towards two ends, is slightly embedded into the inlet 5, and is abutted and abutted against the abutting surface 16 of the auxiliary sealing ring 14 in the inlet 5 to enhance the sealing effect at the inlet 5; the multiple sealing structures are mutually matched, the overall sealing effect of the valve body 1 is guaranteed, the deformation characteristic of the hollow piston 7 is utilized, the abrasion to a certain degree can be allowed, and the service life of the piston 7 is prolonged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A control valve with good sealing effect comprises a valve body (1) and a valve head (3), and is characterized in that the valve body (1) is hollow to form a valve cavity (2), the valve head (3) is installed at the upper end of the valve cavity (2), the lower end of the valve cavity is an outlet (4), and an inlet (5) communicated with the interior of the valve cavity (2) is vertically arranged in the middle of the side surface of the valve body (1); a valve rod (6) is inserted into the middle of the valve head (3), the lower end of the valve rod (6) is arranged in the valve cavity (2) and is provided with a piston (7) attached to the inner wall of the valve cavity (2), and the interior of the piston (7) is a buffer cavity (8) with an oval hollow structure; a circle of raised limiting rings (10) are arranged on the inner wall of the valve cavity (2) at the position below the inlet (5) and used for limiting the abutting of the piston (7), a threaded sealing ring (11) is mounted on the valve rod (6) at the top of the piston (7), a sealing sleeve (12) is embedded on the inner wall of the valve cavity (2) at the position above the inlet (5), and the threaded sealing ring (11) is in threaded connection with the inner wall of the sealing sleeve (12); an auxiliary sealing ring (14) with an annular structure is arranged in the inlet (5).

2. The control valve with good sealing performance according to claim 1, wherein: the outer wall of the valve rod (6) is of a threaded structure, and a through hole in threaded connection with the valve rod (6) is formed in the middle of the valve head (3).

3. The control valve with good sealing performance according to claim 1, wherein: the upper end of the valve rod (6) extends out of the valve head (3) and is provided with a rotating handle (13).

4. The control valve with good sealing performance according to claim 1, wherein: and a stainless steel reinforcing layer (9) of an elliptical structure attached to the inner wall of the buffer cavity (8) is embedded in the buffer cavity in a matching manner.

5. The control valve with good sealing performance according to claim 1, wherein: when the piston (7) and the inlet (5) are opposite to each other for plugging, the tip of the buffer cavity (8) with an internal oval structure points to the inlet (5).

6. The control valve with good sealing performance according to claim 1, wherein: the auxiliary sealing ring (14) is arranged at one end, close to the valve cavity (2), of the inlet (5), the inner wall of the auxiliary sealing ring is provided with an inclined guide inclined plane (15), the end with the smaller inner diameter faces the valve cavity (2), the end face, facing the valve cavity (2), of the auxiliary sealing ring (14) is arched outwards to form a circle of jacking face (16), and the jacking face (16) is flush with the inner wall of the valve cavity (2) in a natural state.