CN207246461U

CN207246461U - Manual totally enclosed type knife gate valve

Info

Publication number: CN207246461U
Application number: CN201720553559.6U
Authority: CN
Inventors: 贾景州; 王万顺; 王新建
Original assignee: Henan Cosmic Fluid Technology Co Ltd
Current assignee: Henan Cosmic Fluid Technology Co Ltd
Priority date: 2017-05-18
Filing date: 2017-05-18
Publication date: 2018-04-17
Anticipated expiration: 2027-05-18

Abstract

The utility model belongs to valve body apparatus field, more particularly to a kind of manual totally enclosed type knife gate valve.The gate valve includes flange valve pipe and the lock set for being arranged at valve tube top portion, flashboard is equipped with lock set, the leading screw for being pierced by lock set is equipped with the top of flashboard, leading screw is threadedly coupled with umbrella handwheel, inside valve pipe half ring-like sealing shroud is installed with corresponding flashboard, the inner ring surface of sealing shroud is equipped with convex sealing strip, and flashboard edge is equipped with the concave character type caulking groove coordinated with sealing strip, and the top lock body of flashboard is equipped with the gasket contacted with lock set；Under flashboard closing valve tubulose state, sealing strip and gasket forming closed sealing ring.The utility model is simple in sturcture, ingenious in design, is contacted between sealing mechanism and flashboard using compression type, and plugging effect is remarkable.

Description

Manual totally enclosed type knife gate valve

Technical field

The utility model belongs to valve body apparatus field, more particularly to a kind of manual totally enclosed type knife gate valve.

Background technology

The opening and closing element of knife gate valve is flashboard, and the direction of motion and flow direction of flashboard are perpendicular, and manual knife gate valve is only It can make standard-sized sheet and fully closed, it is impossible to make adjustments and throttle.When valve is closed, flashboard is pressed into valve seat by force by external force, to protect Demonstrate,prove the leakproofness of sealing surface.Two sealing surfaces of more settings of the prior art are to block the gap between flashboard and valve pipe, still With the propulsion of knife gate valve usage time, the gasket abrasion at sealing surface is more serious, it is difficult to effectively to flashboard and valve Gap between pipe, causes the phenomenon of leakage to produce.

Utility model content

The purpose of this utility model is to provide a kind of manual totally enclosed type knife gate valve, and the utility model is simple in structure, if Count ingenious, contacted between sealing mechanism and flashboard using compression type, plugging effect is remarkable.

In order to solve the above technical problems, the technical solution adopted in the utility model is as follows：

Manual totally enclosed type knife gate valve, the gate valve include flange valve pipe and the lock set for being arranged at valve tube top portion, lock Flashboard is equipped with set, the leading screw for being pierced by lock set is equipped with the top of flashboard, leading screw is threadedly coupled with umbrella handwheel, corresponding lock inside valve pipe Half ring-like sealing shroud is installed with plate, the inner ring surface of sealing shroud is equipped with convex sealing strip, and flashboard edge is equipped with and sealing The concave character type caulking groove that bar coordinates, the top lock body of flashboard are equipped with the gasket contacted with lock set；Under flashboard closing valve tubulose state, Sealing strip and gasket forming closed sealing ring.

Preferably, the inner ring surface of the sealing shroud is connected by the bottom surface of spring and sealing strip.

Preferably, guide rod is installed with the inner ring surface of the sealing shroud, spring pocket is arranged on outside guide rod and both ends point Lian Jie not inner ring surface and sealing strip.

Preferably, the sealing strip bottom surface, which corresponds to, is equipped with limiting slot at guide rod.

Preferably, the sealing strip both ends are equipped with hard guide pad, and hard guide pad vertical direction is set, and when flashboard seals Under valve closing tube state, the level height of hard guide pad is higher than gasket.

During utility model works, screw is operated by rotating umbrella handwheel, when closing pipeline, screw declines simultaneously Drive flashboard to decline, valve pipe is blocked；When opening pipeline, screw rises and drives flashboard to rise so that valve pipe communicating pipe Road.

Specifically, when screw drives valve pipe to decline, the hard guide pad at two side contacts sealing strip both ends of flashboard first, by There is certain degree of hardness in hard guide pad, it is possible in the caulking groove of quick insertion flashboard avris, then as the decline of flashboard, Sealing strip is taken advantage of a situation in the caulking groove of insertion flashboard avris under the guiding role of hard guide pad.When flashboard completely encloses valve pipe, Gasket on sealing strip and flashboard forms the ring structure of a closed perimeter, can effectively liquid in blocking pipe. Meanwhile the spring between sealing shroud body and sealing strip can natural resiliency effect under ejection sealing strip so that sealing strip and lock Plate caulking groove is even closer in combination.

Guide rod can ensure that the elastic force of spring is axially released along guide rod, while the limiting slot of fitted seal bar, can be with Anti- guide rod in a compressed state produces sealing strip misorientation extruding, causes sealing strip to rupture.

The utility model compared with prior art, has the following advantages that：It is simple in sturcture, ingenious in design, sealing mechanism and lock Contacted between plate using compression type, plugging effect is remarkable.

Brief description of the drawings

Fig. 1 is the structure diagram of manual totally enclosed type knife gate valve in embodiment；

Fig. 2 is sealing shroud of the gate valve under closed state shown in Fig. 1 and flashboard attachment structure schematic diagram；

Fig. 3 is sealing shroud shown in Fig. 2 and the cross section structure schematic diagram of flashboard junction.

Embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining The utility model, is not used to limit the utility model.

As shown in Figs. 1-3, manual totally enclosed type knife gate valve, the gate valve include flange valve pipe 1 and are arranged at valve pipe 1 The lock set 2 at top, lock set 2 is interior to be equipped with flashboard 3, and the top of flashboard 3 is equipped with the leading screw 4 for being pierced by lock set, leading screw 4 and 5 spiral shell of umbrella handwheel Line connects, and is installed with half ring-like sealing shroud 6 at the corresponding flashboard 3 in the inside of valve pipe 1, guide rod is installed with the inner ring surface of sealing shroud 6 62, spring 61 is sheathed on the outside of guide rod 62 and both ends connect sealing shroud inner ring surface and sealing strip 7,7 bottom surface pair of sealing strip respectively Answer and limiting slot 72 is equipped with guide rod 62,7 section of sealing strip is in convex structure, and 3 edge of flashboard is equipped with to be coordinated with sealing strip 7 Concave character type caulking groove 31,7 both ends of sealing strip are equipped with hard guide pad 71, and 71 vertical direction of hard guide pad is set, the top of flashboard 3 Portion's lock body is equipped with the gasket 8 contacted with lock set 2；Under flashboard closing valve tubulose state, sealing strip 7 and the composition closing of gasket 8 Formula sealing ring, the level height of hard guide pad 71 are higher than gasket 8.

Claims

1. manual totally enclosed type knife gate valve, it is characterised in that the gate valve includes flange valve pipe and is arranged at valve tube top portion Lock set, be equipped with flashboard in lock set, be threadedly coupled at the top of flashboard equipped with the leading screw for being pierced by lock and covering, leading screw with umbrella handwheel, valve pipe Half ring-like sealing shroud is installed with the corresponding flashboard in inside, the inner ring surface of sealing shroud is equipped with convex sealing strip, flashboard edge Equipped with the concave character type caulking groove coordinated with sealing strip, the top lock body of flashboard is equipped with the gasket contacted with lock set；Flashboard is closed Under valve tubulose state, sealing strip and gasket forming closed sealing ring.

2. manual totally enclosed type knife gate valve as claimed in claim 1, it is characterised in that the inner ring surface of the sealing shroud passes through The bottom surface of spring and sealing strip connects.

3. manual totally enclosed type knife gate valve as claimed in claim 2, it is characterised in that solid on the inner ring surface of the sealing shroud Equipped with guide rod, spring pocket is arranged on outside guide rod and both ends connect inner ring surface and sealing strip respectively.

4. manual totally enclosed type knife gate valve as claimed in claim 3, it is characterised in that the sealing strip bottom surface, which corresponds to, to be oriented to Limiting slot is equipped with bar.

5. manual totally enclosed type knife gate valve as claimed in claim 1, it is characterised in that the sealing strip both ends are equipped with hard Guide pad, hard guide pad vertical direction are set, and when under flashboard closing valve tubulose state, the level height of hard guide pad is higher than Gasket.