CN2463624Y

CN2463624Y - Leakless valve

Info

Publication number: CN2463624Y
Application number: CN01201324U
Authority: CN
Inventors: 周世友
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-12
Filing date: 2001-02-12
Publication date: 2001-12-05
Anticipated expiration: 2011-02-12
Also published as: WO2002065007A1

Abstract

The utility model relates to a leakless valve used for a gas or liquid pipeline, which is composed of a valve body 1, a valve cover 9, a valve core, a sealed bladder and a valve actuator. The utility model is characterized in that the fixed joint between the valve cover 9 and the valve body 1 just compacts and seals the opening edge 6 of the sealed bladder, which enables fluid medium and the valve core to separate; the bottom 3 of the sealed bladder is sheathed tightly with the head 4 of the valve core; a screw advancing mechanism is composed of the tail 7 of the valve core, the valve cover 9, a screw thread pillar 8 and a handle 10, and the screw advancing mechanism enables the valve core to move axially and to implement switching of the valve. The utility model has the characteristics of good sealing, reliable use, flexible opening and closing, long service life, simple structure and low production cost.

Description

A kind of not leakage valve

The utility model relates to a kind of valve.

Existing widely used valve, the sealing leakage proof at its valve rod place adopts seal washer usually or compresses with filler.The shortcoming of this class sealing is that valve rod moves up and down in packing ring or filler, causes packing ring or filler to be worn, and medium leaks easily, and valve rod is got rusty by dielectric corrosion easily.This type of valve switch is hard, and the life-span is short, and it is unreliable to use, and maintenance is also inconvenient.

The purpose of this utility model provides a kind of switch leakage valve not flexibly, and it uses reliable, and the life-span is long, and is easy to maintenance, and simple in structure, cheap.

The utility model is achieved in that it is made up of valve body, spool, sealed bladder, valve gap, valve actuator.It is characterized in that: valve gap and valve body are for fixedlying connected, and its joint is pushed down sealing to the edge of opening of sealed bladder just, and the bottom of sealed bladder tightly is enclosed within the head of spool just, and sealed bladder is separated flowing medium and spool; The screw propulsion mechanism that valve actuator is made up of the neck of the afterbody of spool, valve gap and a screw column and handle constitutes, handle with sleeve, and spool will axially move up and down, and makes the sealed bladder bottom compress valve seat or lifts off a seat, and realizes the Push And Release of valve.

After adopting such structure,, avoided dielectric leakage owing to there is sealed bladder isolated in the valve flowing medium and spool and valve actuator, the friction wear of sealed bladder bottom with valve seat avoided in moving axially of spool, so it uses reliable, open and close flexibly, the life-span prolongs greatly; In addition, this valve mechanism is simple, and the material therefor scope is wide, and that can make metal also can make plastics, and low production cost is applied widely, can not only make big valve, also can be processed into bib tap or micro valve.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the sectional view of an embodiment of a kind of not leakage valve of the utility model.

Accompanying drawing 1 explanation: 1 is valve body, and 2 is valve seat, 3 be sealed bladder at the bottom of, 4 is the spool head, 5 is the sealed bladder body, and 6 is the sealed bladder edge of opening, and 7 is the spool afterbody, 8 is screw column, 9 is valve gap, and 10 is handle, forms sealed bladder by 3,5,6, form spool by 4,5, form screw propulsion mechanism by 7,8,9,10.

In the accompanying drawing 1, valve body 1 inside is provided with circle hole shape valve seat 2, and contacted with valve seat 2 is at the bottom of the sealed bladder 3; Sealed bladder is that resilient sealing material is made, and Nang Kou is provided with the edge 6 of a circle evagination, the accordion structure that capsule body 5 contracts for easy Shen, the 3 spherical crown shape heads 4 that just in time tightly are enclosed within spool at the bottom of the sealed bladder; Valve gap 9 and valve body 1 are fixedly screwed connection, and its joint just in time is fixed sealed bladder edge of opening 6, and like this, sealed bladder is separated spool and flowing medium fully, avoids dielectric leakage; Spool afterbody 7 is similar hollow cylinder, and the cylinder outside is provided with two or more rotation inhibiting fins of symmetry, and the cylinder inboard is a worm structure; Valve gap 9 is similar no-bottom bottle structure, and its neck inboard is provided with and the corresponding two or more grooves of the outside fin of spool afterbody 7, and the spool afterbody just in time can pack into the valve gap neck, and can move axially at neck; Valve gap 9 tops are provided with circular hole; Screw column 8 is provided with the column structure of screw thread for the outside, and its screw thread is corresponding with spool afterbody 7 inside threads, and capital is provided with and protrudes little axle, and the little axle just in time Shen circular hole that goes out valve gap 9 tops is fixedlyed connected with handle 10.

During use, need only handle with sleeve 10 gently, 3 will move down with moving or elongate capsule body 6 on the spool head 4 compression bag bodies 6 at the bottom of the sealed bladder, realize the Push And Release of valve.

Except structure shown in Figure 1, the utility model can also have other constructional variant, and does not break away from scope of the present utility model.For example, the spool head also can be coniform or other suitable shapes; Sealed bladder also can be other suitable shapes, can be resilient straight-tube shape etc. as the capsule body; Valve actuator can be diversified, as the actuator of existing self-closing water tap or other suitable structures etc.

Claims

1, a kind of not leakage valve, form by valve body, valve gap, spool, sealed bladder, valve actuator, it is characterized in that: the joint of valve gap (9) and valve body (1) compresses the edge of opening (6) of sealed bladder, sealed bladder bottom (3) tightly is enclosed within the head (4) of spool, sealed bladder is separated spool and flowing medium, and other is provided with and makes the axially movable valve actuator of spool.

2, a kind of not leakage valve according to claim 1, it is characterized in that: the opening of sealed bladder is provided with the edge of opening (6) of a circle evagination, capsule body (5) is made for sealing material pleated or that contract in resilient easy Shen, the shape of (3) is similar to the head (4) of spool at the bottom of the capsule, just tight sleeving valve core head is at the bottom of the capsule and spool can by compression or to elongate capsule mobile down on one's body.

3, a kind of not leakage valve according to claim 1, it is characterized in that: spool head (4) is the spherical crown shape, and afterbody (7) is similar hollow cylinder, and the cylinder outside is provided with two or more rotation inhibiting fins of symmetry, and the cylinder inboard is a worm structure.

4, a kind of not leakage valve according to claim 1 is characterized in that: valve gap (9) is similar no-bottom bottle structure, and its neck inboard is provided with two or more and the corresponding groove of spool afterbody (7) outside fin; Spool afterbody (7) packs into valve gap (9) neck just, and can move axially at the valve gap neck; Valve gap (9) top is provided with circular hole.

5, a kind of not leakage valve according to claim 1 is characterized in that: valve actuator is a screw column (8) that can be connected with handle, and the internal thread of its worm structure and spool afterbody (7) adapts; Screw column (8) top is provided with protrudes little axle, and the little axle just in time Shen circular hole and the handle (10) that go out valve gap (9) top fixes.