CN2379654Y

CN2379654Y - Non-leakage valve

Info

Publication number: CN2379654Y
Application number: CN 99217778
Authority: CN
Inventors: 黄绍业; 魏彦华; 赵童君; 杜立贞
Original assignee: New Tech Development Inst Huabei Petroleum Skilled-Worker Training School
Current assignee: New Tech Development Inst Huabei Petroleum Skilled-Worker Training School
Priority date: 1999-08-11
Filing date: 1999-08-11
Publication date: 2000-05-24
Anticipated expiration: 2009-08-11

Abstract

The utility model relates to a pipe valve mainly composed of a valve body, a valve seat, a valve clack, a valve rod, etc., wherein, the valve seat, the valve clack, the valve rod, etc. are arranged in the valve body. Hand wheels are coupled and connected together through an inner and an outer magnetic blocks. The utility model is characterized in that the valve body is a complete sealing body; the left end of the valve rod is provided with a pressure relief hole; the valve clack and the valve rod are connected together and are arranged in the valve seat; the valve rod is sheathed with a valve rod sleeve which is arranged on the valve seat through screw threads, and hand wheel and the valve rod sleeve are coupled and connected through the magnetic blocks arranged on the hand wheel and the valve rod sleeve. The utility model has the advantages that the condition that the valve has no leakage can be realized, the opening is flexible and the service life is long; the utility model is particularly suitable for the pipe used for conveying inflammable, explosive or toxic medium.

Description

The ne-leakage valve

The utility model relates to a kind of line member of carrying liquid or gas, is a kind of pipe valve.

In the valve of traditional line member, generally deposit valve rod and be installed in and easily producing the medium leakage problems between the interior filler of valve gap, if what carry in the pipeline is inflammable and explosive gas or liquid, perhaps poisonous medium leaks out and can bring very big harm to safety in production.Valve body that Chinese patent 96102387.2 " Magnetic Cooperate Globe Valves " proposes and body cap form the cavity seal, and parts such as flap, valve rod are installed in the seal, have solved the leakage problems of valve more effectively.But it still has deficiency, and (1) overall structure has still been continued to use traditional by valve body, body cap two-part combining form, complex structure, particularly body cap part, and difficulty of processing is big.In addition, as leakproof, seal is formed by spiral marking connection by valve body, body cap, and structure is not all roses.(2) valve of making according to this technical solution, in the opening and closing process, valve rod exists all the time and rotates when rising or descending, and therefore easily causes the wearing and tearing of sealing surface between valve rod and flap, flap and the valve opening, influences working life.

The purpose of this utility model provide a kind of simple in structure, open flexibly, ne-leakage valve that Sealing can not produce wearing and tearing, long service life.

Technical solution of the present utility model is achieved in that a kind of handwheel connects with valve rod mutually by magnetic coupling by valve body and be installed in the ne-leakage valve that valve seat, flap and valve rod etc. in the valve body constitute, and its special way is:

1. valve body is complete closure, and the valve seat side has medium through hole, and valve seat is installed in the end in the valve body;

2. the left end of valve rod has relief hole, and flap and valve rod are installed together, and is contained in the valve seat, and valve rod can move the 1-10mm distance in the axial direction relative to flap, and Sealing is housed respectively on flap and the valve rod;

3. valve stem casing is sleeved on the valve rod, and valve stem casing connects with the shutoff of flap mutually by screw thread, and the magnetic patch support is fixedly mounted on the valve stem casing, and interior magnetic patch is contained in the magnetic patch groove of magnetic patch support;

4. handwheel and support are bound up, and support casing is contained in the valve body outside, and outer magnetic patch is contained in the magnetic patch groove of handwheel support.

In above-mentioned technical solution, its special way also is, at the right-hand member of valve rod body resistance-strengthening tablets is installed.

The utility model has the advantages that: (1) valve body is a complete closure, and the opening and closing by magnetic coupling realization valve make structure more simple, and will not produce leakage medium on valve body.(2) adopt valve stem casing and valve rod two body sleeve structures, valve rod is only moved as straight line, alleviated the wearing and tearing of valve rod and flap, flap and valve base chamber Sealing effectively, increased the working life of valve.(3) owing to have decompression mechanism, valve opening is flexible.

Accompanying drawing is a structural representation of the present utility model.

Be further described (embodiment) below in conjunction with accompanying drawing:

Outer magnetic patch 15 is installed in the magnetic patch groove of handwheel frame 24, the magnetic patch groove is made of nonmagnetic substance, can select magnetism-free stainless steel for use, size according to the magnetic intensity of the size of valve and magnetic patch, determine what of magnetic patch, general 4-16 piece, magnetic patch groove and handwheel frame are an integral body.Handwheel 14 and handwheel frame 24 fixed connections are in the same place, the handwheel frame 24 that outer magnetic patch 15 has been installed are sleeved on the outside of valve body 4.Flange 3 (or screw thread) is processed at the two ends of straight-cylindrical valve body 4 respectively, and valve body 4 usefulness nonmagnetic substances are made, as magnetism-free stainless steel.Sealing 10 employing rubber seal (or sealing gasket etc.) be installed on the valve rod 11, valve rod 11 left ends are installed in the flap 7, nut 6 is contained on the valve rod 11, make the spacing that 1-10mm is arranged between nut 6 and flap 7 interior edge faces, 2-4mm is better, the inboard right side of flap is a sealing surface, left end at valve rod 11 has relief hole 9, Sealing 5 (adopting rubber seal or sealing gasket etc.) is installed on flap 7, flap 7 and valve rod 11 are installed in the valve seat 2 together, have 2-6 medium through hole 8 on valve seat 2, its diameter determines that according to the valve latus rectum circular bead surface in the valve seat 2 is a sealing surface.Shutoff 13 is installed in the right-hand member of valve seat 2 by screw thread, makes and form underpressure chamber 12 between flap 7 and the shutoff 13.Valve stem casing 17 is sleeved on the valve rod 11, be installed in the shutoff 13 by screw thread, be fixed with magnetic patch support 23 on the valve stem casing 17, magnetic patch 16 in the magnetic patch groove of magnetic patch support 23, being equipped with, the number of magnetic patch is identical with the outer magnetic patch number of installation in the handwheel frame 24, the magnetic patch groove is made of nonmagnetic substance, as magnetism-free stainless steel, has the through hole 25 that medium is passed through on magnetic patch support 23.Right-hand member at valve rod 11 is equipped with body resistance-strengthening tablets 18 and nut 19, makes on the through hole 22 that medium passes through having on the body resistance-strengthening tablets 18.Parts such as the above-mentioned valve seat that fits together 2, flap 7, valve rod 11 are installed in the valve body 4 by the screw thread on the valve seat 2.Handwheel frame 24 is placed and interior magnetic patch 16 corresponding positions, the import collar 20 is installed in the right-hand member of valve body 4.

The flange (or screw thread) of the utility model by its two ends is connected on the pipeline, and its right-hand member is import 21, and left end is outlet 1.In the time will opening valve, rotation hand wheel 14, by attracting each other of inside and outside

magnetic patch

16,15, drive valve stem casing 17 rotations, pulling valve rod 11 moves, by relief hole 9 pressure medium in the underpressure chamber 12 is released, just be easy to spur flap 7 by valve rod 11 again, reach valve opening purpose flexibly.

Claims

1. one kind by valve body (4) be installed in the ne-leakage valve that valve seat (2), flap (7) and valve rod (11) in the valve body (4) constitute, and handwheel (14) connects with valve rod (11) mutually by magnetic coupling, it is characterized in that:

1. valve body (4) is complete closure, and valve seat (2) side has medium through hole (8), and valve seat (2) is installed in the end in the valve body (4);

2. the left end of valve rod (11) has relief hole (9), flap (7) is installed together with valve rod (11), be contained in the valve seat (2), valve rod (11) can mobile in the axial direction 1-10mm distance with respect to flap (7), and Sealing (5,10) is housed respectively on flap (7) and the valve rod (11);

3. valve stem casing (17) is sleeved on the valve rod (11), and valve stem casing (17) connects with the shutoff (13) of flap (7) mutually by screw thread, and magnetic patch support (22) is fixedly mounted on the valve stem casing (17), and interior magnetic patch (16) is contained in the magnetic patch groove of magnetic patch support (22);

4. handwheel (14) and support (24) are bound up, and support (24) is sleeved on valve body (4) outside, and outer magnetic patch (15) is contained in the magnetic patch groove of handwheel support (24).

2. ne-leakage valve according to claim 1 is characterized in that, at the right-hand member of valve rod (11) body resistance-strengthening tablets (18) is installed.