WO2002065007A1

WO2002065007A1 - Valve

Info

Publication number: WO2002065007A1
Application number: PCT/CN2002/000082
Authority: WO
Inventors: Shiyou Zhou
Original assignee: Shiyou Zhou
Priority date: 2001-02-12
Filing date: 2002-02-09
Publication date: 2002-08-22
Also published as: CN2463624Y

Abstract

The invention relates a valve for gas or fluid pipe comprising a valve body, avalve cap, a valve element with a head section, a sealing element, and an actuator, wherein the sealing element is a bellows which has a bottom (3) inserted into the head section (4) of the valve element, and a bellows side (6) between the valve body and the valve cap so as to seal. The present invention has good sealing, long working-life, simplify in structure, and low cost.

Description

TECHNICAL FIELD The present invention relates to a valve. Background technique

Now widely used valves, the seal at the valve stem is usually sealed with a gasket 防 or packed with packing. The disadvantage of this type of seal is that the valve stem moves up and down in the gasket or packing, causing the gasket or packing to be worn, the medium is easy to leak out, and the valve stem is easily corroded and rusted by the medium. Such valves are laborious, have a short life, have unreliable seals, and are inconvenient to maintain. SUMMARY OF THE INVENTION The object of the present invention is to provide a valve which is flexible in switching, does not leak, has high sealing reliability, long life, convenient maintenance, simple structure, and low cost.

In order to achieve the above object, according to the present invention, there is provided such a valve, which has a valve body, a valve cover, a valve core, a seal, and a valve actuator. The valve core has a valve core head, which is characterized in that the seal is a Seal 嚢, it has a bottom Zhenghe edge tightly sleeved on the valve core head;> A slot is formed between the valve cover and the valve body, the edge is inserted into this slot to be sandwiched between the valve cover and Between the valve bodies; the valve cover and the valve body are connected so that the edge is tightly pressed between the valve body and the valve body so that the seal 嚢 separates the valve core from the fluid medium.

After adopting such a structure, the seal inside the valve isolates the fluid medium from the valve core and the valve actuator to avoid medium leakage. The axial movement of the valve core head avoids friction and wear between the bottom of the seal and the valve seat. Therefore, it has a reliable seal, flexible opening and closing, and a long service life. In addition, the valve has a simple structure, and the main structural parts can be made of metal or plastic. The production cost is low and the scope of application is wide. Doors can also be processed into small faucets or miniature valves. BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. FIG. 1 is a cross-sectional view of a specific embodiment of a valve of the present invention. Best Mode of the Invention

As shown in FIG. 1, the valve has a valve body 1, a round hole-shaped valve seat 2 located inside the valve body 1, a valve core with a spool head 4 and a spool tail 7, and a seal with a bottom 3 and an edge 6嚢, threaded post 8, bonnet 9 and handle 10. Seal base 3 is used to make contact with seat 2 during sealing. The seal is made of an elastomeric material, in particular an elastic rubber. The seal cymbal also has a corrugated tubular, cylindrical, or lip-shaped body part 5 located between the cymbal bottom 3 and the edge 6. The trunk 5 should be easily deformed elastically. The bottom 3 is tightly wrapped around the spool head 4. The valve cover 9 and the valve body 1 are detachably fixedly connected, and a groove is formed between the valve cover and the valve body, especially an annular groove. The convex edge 6 at the upper end of the trunk 5 is inserted into this groove. The valve cover 9 and the valve body 1 should be connected so that the above edge is tightly pressed between the valve body and the valve cover, so that the seal 嚢 separates the valve core from the fluid medium.

The spool end 7 is a cylinder with a central hole. The outer surface of the cylinder is provided with two or more anti-rotation convex ribs arranged at substantially equal intervals in the circumferential direction. The surface of the central hole is provided with a threaded structure. The cap 9 is in the shape of a bottomless bottle, and the inner surface of the neck portion is provided with two or more grooves corresponding to the convex edges on the outer surface of the spool 7. The spool end fits into the neck of the bonnet and moves axially around the neck. The outer surface of the threaded post 8 is provided with a thread, and the thread is matched with the thread on the surface of the central hole of the spool 7. The top of the bonnet 9 is provided with a round hole. The threaded post 8 has a small shaft protruding at its upper end, and the small shaft just extends out of the round hole on the top of the valve cover 9 and is fixedly connected to the handle 10. The threaded post 8 has an annular protrusion at a position adjacent to the upper end portion, and the annular protrusion cannot pass through a circular hole at the top of the valve cover, so that the screw post 8 is axially positioned relative to the valve cover 8.

The spool tail 7, the threaded post 8, the bonnet 9 and the handle 10 together form a spiral Advancing mechanism. When in use, as long as the handle 10 is turned lightly, the bottom 3 will move up and down with the spool head 4 to open and close the valve.

In addition to the structure shown in FIG. 1, the present invention may also have other structural modifications without departing from the scope of the present invention. For example, the Gang core head may be conical or other suitable shapes; the seal may also be other suitable shapes. Valve execution «can be various, such as the existing self-closing faucet actuator or other applicable structures.

Claims

Rights request

1. A valve having a valve body, a bonnet, a valve core, a seal and a valve actuator. The valve core has a valve core head, which is characterized in that the seal is a seal, which has a tight sleeve on the above. Bottom (3) and one edge on spool head (4)

(6); A groove is formed between the valve cover (9) and the valve body (1), and the edge (6) is inserted into this groove so as to be sandwiched between the valve cover and the valve body; The valve body is connected so that the edge is tightly pressed between the valve body and the valve cover, so that the seal 嚢 separates the valve core from the fluid medium.

2. The valve according to claim 1, characterized in that the seal cymbal further has a hollow body part (5), a body part located between the edge (6) and the bottom (3).

(5) Corrugated, cylindrical or trumpet shape; the shape of the bottom (3) matches the shape of the spool head (3); the seal is made of an elastomer material.

3. The valve according to claim 1 or 2, characterized in that the head (4) of the valve core is a spherical crown, the tail (7) is a cylinder with a central hole, and the outer surface of the cylinder is provided with two equally spaced two One or more anti-rotation convex ribs, and the surface of the central hole has a thread structure.

4. The valve according to claim 1 or 2, characterized in that: the valve cover (9) is a bottomless bottle-like structure, and the inside of the neck is provided with two or more convexities with the outer surface of the valve core tail (7). The groove opposite the ¾; the tail (7) of the valve ¾ fits into the neck of the bonnet (9) and can move axially on the bonnet's neck; the top of the bonnet (9) is provided with a round hole.

5. The valve according to claim 3, characterized in that: the valve actuator has a handle (10) and a threaded post (8) connected to the handle (10), and its thread structure is connected to the valve core tail (7) The internal thread of the threaded column (8) is provided with a small shaft protruding from the top of the threaded column (8), and the small hole just extends out of the top of the bonnet (9) is connected with the handle (10); the threaded column (8) is adjacent to the top There is an annular flange at the position.