CN2226681Y

CN2226681Y - Internal and external leakproof plunger shutoff valve with core sleeve

Info

Publication number: CN2226681Y
Application number: CN 94239630
Authority: CN
Inventors: 陈宝镇
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-09
Filing date: 1994-11-09
Publication date: 1996-05-08
Anticipated expiration: 2004-11-09

Abstract

The utility model relates to an internal and external leakproof plunger stop valve with a core sleeve, which comprises a valve body, a valve cap, a valve core, a valve rod, a core sleeve, a valve rod nut, a sealing ring and a handwheel. The utility model has the characteristics of stable operation, good sealing property and long service life and is a novel valve which is suitable for controlling the circulation of various liquids to substitute various stop valves and plunger valves. The internal and external leakproof plunger stop valve with a core sleeve can still be used stably when the valve core is installed slantways or flatly.

Description

Band core sleeve plunger stop valve preventing internal and outernal leakage

The utility model relates to a kind of various fluid flows of control that are applicable to, prevents the Plunger Globe Valve of internal and outernal leakage.

In the prior art, I am once in having applied for " preventing the Plunger Globe Valve of internal and outernal leakage " 90.5.24 day, and the patent No. is: 902072684.Though this valve efficiently solves fluid internal and outernal leakage problem, be in to tilt or level is installed occasion at spool, when valve body will closed condition, spool caused the closing operation instability because gravity can the disalignment.

The purpose of this utility model is to provide that a kind of use is stable, the life-span is long, has good seal performance, can adjust seal clearance, prevents internal and outernal leakage, can replace the novel valve of various stop valves and plunger valve.

In order to achieve the above object, the utility model adopts following technological scheme: referring to Fig. 1, tighten an intrinsic core sleeve at a body cavity wall that forms cavity and fluid inlet and outlet passage, the body cavity wall is stretched out in the core sleeve lower end, and the spool of valve body can move up and down in core sleeve.During use, controlled fluid flows into from the left side, and flow out on the right.When the need throttle down, the handwheel of the valve rod upper end of rotation spinning on Stem Mut moves down valve rod, drives spool and moves down in the core sleeve inter-sync, be adjacent to sealed mouth to the spool lower end conical surface till.Because the sealed mouth of end distance valve is nearer under the core sleeve, makes when throttle down, it is shorter that spool stretches out core sleeve, tilts or during the level installation when spool like this, and spool is unlikely to become big overhang,

Make center spool not depart from the valve axle center, cause fluctuation of service and close not thoroughly, and easily produce internal leakage.External leakage is solved by the seal ring that is contained between body cavity wall and the spool.Reach good sealing effect by the distance of adjusting valve body and valve gap.

The utility model compared with prior art has valve when tilting with the level installation, all the advantage of energy stable operation.

The drawing explanation of accompanying drawing:

Accompanying drawing 1 is the structure principle chart of the utility model embodiment.

Embodiment of the present utility model is: referring to Fig. 1, (1) is valve body, and (2) are spools, and (3) are seal rings, (4) be valve rod, (5) are valve gaps, and (6) are Stem Muts, and spinning is in the valve gap upper end, (7) be handwheel, play switch valve, (8) are core sleeves, and (9) are sealed mouths.A valve body that is formed with inner chamber and communicates the import and export passage, a valve gap, but be fixed on the described valve body by fastening piece, and which is provided with valve weldering nut; A valve weldering, be arranged on the described valve gap by valve weldering nut, its upper end is provided with handle, and its lower end is stretched in the described valve body and is connected with a spool, the lower end of spool is a garden platform shape, and can be positioned at the metal kiln that fuses with valve body of importing and exporting the passage jointing place and seal and cooperate; Be arranged on a seal ring between body cavity wall and the spool and import and export channel separation, and compress by described valve gap.It is characterized in that coaxial being fixed on the described body cavity wall of a core sleeve and described spool, and extend in the import and export passage; Described spool can move in described core sleeve.

Claims

1, a kind of plunger stop valve preventing internal and outernal leakage with core sleeve, comprise that one is formed with inner chamber and the valve body of the import and export passage that communicates, a valve gap, but be fixed on the described valve body by fastening piece, see and which is provided with Stem Mut, a valve rod, be arranged on the described valve gap by Stem Mut, its upper end does not have handle, its lower end is stretched in the described valve body and is connected with a spool, and the lower end of spool is a garden platform shape, and can be positioned at the metal that fuses with valve body of importing and exporting the passage jointing place and encircle closely and cooperate, be arranged on the seal ring between body cavity wall and the spool, with import and export channel separation, and compress by described valve gap, it is characterized in that: also comprise a core sleeve, described core sleeve and described spool are fixed on the described body cavity wall coaxially, and extend in the import and export passage; Described spool moves in described core sleeve.