CN205013724U

CN205013724U - A novel plate valve for blowdown pipeline is terminal

Info

Publication number: CN205013724U
Application number: CN201520774381.9U
Authority: CN
Inventors: 任二朋
Original assignee: TIANJIN BAILI ZHANFA GROUP CO Ltd
Current assignee: TIANJIN BAILI ZHANFA GROUP CO Ltd
Priority date: 2015-10-08
Filing date: 2015-10-08
Publication date: 2016-02-03
Anticipated expiration: 2025-10-08

Abstract

The utility model relates to a novel plate valve for blowdown pipeline is terminal, including valve body, disk seat, flashboard, direction backplate, valve rod, valve gap and hand wheel, at the vertical valve rod of installing in valve body middle part, the valve rod lower extreme in the valve body is equipped with a flashboard admittedly, and a disk seat is installed to the symmetry respectively in the valve body of flashboard both sides, is close to at these two disk seats that the one end at valve body center is equal vertical to be equipped with a direction backplate admittedly, and direction backplate lower part system has the water conservancy diversion hole, and the sealed end at the disk seat is fixed to the coaxial suit in water conservancy diversion hole, there is the water conservancy diversion hole at the flashboard for upper portion system. This gate valve is applicable to place blowdown pipeline ends such as water, oil, the natural gas and blocks medium stream, and the medium of sewage, the gas that contains dust and granule impurity, oil etc. Effectively stops the most filth in the medium to get into the valve pocket, reduces it and piles up bottom the valve pocket to guarantee that the flashboard can target in place by the switch all the time, and make the sealed vice life of valve longer.

Description

A kind of Novel flat plate gate valve for blowdown pipeline end

Technical field

The utility model belongs to valve field, especially a kind of Novel flat plate gate valve for blowdown pipeline end.

Background technique

At present, most flat plate gate valve gate plate being used for blowdown pipeline end adopts lower pod apertures structure, and meanwhile, valve seat soft seal adopts fluoroplastic or nylon, and during work, drive flashboard to move up and down by valve rod, valve seat forms the keying of valve together with flashboard.

The shortcoming of prior art is: when ordinary flat gate valve is used for blowdown pipeline end, in the process that flashboard moves up and down, dirt in pipeline has and greatly enters into valve pocket by flashboard and the passage that formed between valve body and valve seat, then pile up bottom valve pocket, cumulative, these dirts not only affect flashboard closedown and put in place, and dirt is entering the process of valve pocket, also can scratch the sealing surface of valve seat, cause valves leakage.

Model utility content

The purpose of this utility model is to overcome the deficiencies in the prior art part, there is provided that a kind of structure is simple, design science, good stability, sealing reliably for the Novel flat plate gate valve of blowdown pipeline end, go for the high mixture condition containing sand rock gas and particle hard foreign material

The utility model solves its technical problem and takes following technological scheme to realize:

For a Novel flat plate gate valve for blowdown pipeline end, comprise valve body, valve seat, flashboard, guiding protecting, valve rod, valve gap and handwheel, in the middle part of valve body, upper end is fixed with a valve gap, is coaxially installed with a handwheel at pedestal upper end; In the middle part of valve body, a valve rod is vertically installed, valve rod Upper vertical is through valve gap, valve rod drives lifting by handwheel, valve rod lower end in valve body is fixed with a flashboard, a valve seat is symmetrically installed with respectively in the valve body of flashboard both sides, it is characterized in that: be all vertically fixed with a guiding protecting at these two valve seats near the one end at valve body center, guiding protecting bottom is shaped with pod apertures, and pod apertures coaxial package is fixed on the sealed end of valve seat; Be that top is shaped with pod apertures at flashboard.

And the seal face of described valve seat is arranged at intervals with deposited metal layer and rubber seal forms soft, hard double seal; End face between valve seat and valve body is embedded with a spring.

And, be coaxially fixed with a blanking cover at body base, on blanking cover top, one blowdown valve be installed.

And, be coaxially fixed with a positioning cap in valve rod upper end.

Advantage of the present utility model and good effect are:

This gate valve is applicable to the place blowdown pipeline ends such as water, oil, rock gas and blocks MEDIA FLOW, sewage, medium containing the gas, oil product etc. of dust and granule foreign, most of dirt in effective prevention medium enters valve pocket, reduce it to pile up bottom valve pocket, thus ensure that flashboard can put in place by switch all the time, and make the sealing pair longer service life of valve.

Accompanying drawing explanation

Fig. 1 is cross-sectional view of the present utility model;

Fig. 2 is the G-G partial sectional view in Fig. 1;

Fig. 3 is the A portion partial enlarged drawing in Fig. 1;

Fig. 4 is the F-F partial sectional view in Fig. 1;

Fig. 5 is positioning cap close-up schematic view;

Fig. 6 is guiding protecting structural representation;

Fig. 7 is flashboard structure schematic diagram;

Fig. 8 is this gate valve switch process schematic;

Fig. 9 is the gate valve switch process schematic of prior art.

Reference character: 1. valve body 2. valve seat 3. flashboard 4. guiding protecting 5. valve rod 6. valve gap 7. support 8. Stem Mut 9. handwheel 10. positioning cap 11. blanking cover 12. blowdown valve 13. deposited metal layer 14. spring 15. pod apertures

Embodiment

Below in conjunction with accompanying drawing, also by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.

A kind of Novel flat plate gate valve for blowdown pipeline end, comprise valve body 1, valve seat 2, flashboard 3, guiding protecting 4, valve rod 5, valve gap 6, support 7, Stem Mut 8 and handwheel 9, be described with direction shown in accompanying drawing 1, the medium channel that horizontal cross is through is shaped with in valve body, in the middle part of valve body, upper end is fixed with a valve gap, and valve body and valve gap pass through seal with O ring; Valve gap upper end is coaxially installed with a support, is coaxially installed with a handwheel at pedestal upper end;

In the middle part of valve body, a valve rod is vertically installed, valve rod Upper vertical is through valve gap and support, valve rod and valve cover chamber are through packing seal, valve rod is coaxially fixed with a Stem Mut by trapezoidal thread, this Stem Mut and handwheel Inside gear drive, rotate handwheel actuate valve stem nut rotation, thus actuate valve stem moves up and down;

Valve rod lower end in valve body is fixed with a flashboard, and this flashboard lifting moves and blocks medium runner; In the valve body of flashboard both sides, be symmetrically installed with a valve seat 2 respectively, valve seat seals with gate panel slide and contacts.The seal face of valve seat is arranged at intervals with deposited metal layer 13 and rubber seal forms soft, hard double seal; End face between valve seat and valve body is embedded with a spring 14, provides pretightening force to valve seat.

Innovative point of the present utility model is:

A guiding protecting 4 is all vertically fixed with near the one end at valve body center at these two valve seats, guiding protecting bottom is shaped with pod apertures 15, pod apertures coaxial package is fixed on the sealed end of valve seat, pod apertures and medium channel are coaxially aligned, gate panel slide is arranged between the guiding protecting of these both sides, ensures the slip coaxality of flashboard;

Be that top is shaped with pod apertures 15 at flashboard, when flashboard is carried, the pod apertures of flashboard and the pod apertures of guiding protecting misplace thus make valve closing, and when flashboard declines, the pod apertures of flashboard and the pod apertures of guiding protecting align and make valve opening, thus opening structure under forming unique shangguan.

A blanking cover 11 is coaxially fixed with at body base, this blanking cover bolton is also enclosed and valve seal by O shape, in blanking cover upper body front, one blowdown valve 12 is installed, this blowdown valve can carry out periodical blowdown to valve, and blanking cover of dismantling can to carrying out periodic cleaning bottom valve pocket, by these two kinds operation with the use of, greatly reduce the frequency of maintenance of valve, add valve use life-span.

Coaxially be fixed with a positioning cap 10 in valve rod upper end, when positioning cap is pressed on Stem Mut, can continues to move down by limiter valve flashboard, thus avoid flashboard to open position.

Flashboard in this structure and between guiding protecting gap very little, in the process of valve opening or closedown, dirt in medium all can be blocked between two backplates, major part dirt can be washed away by medium at once, and a small amount of dirt can temporarily remain in the space of guiding protecting and the formation of flashboard passage, also can be taken away by medium when next valve opening, whole process, only there is the dirt of minute quantity can enter valve pocket by the gap between flashboard and guiding protecting, effectively reduce the accumulation of dirt bottom valve pocket.

And, periodical blowdown can be carried out to valve by body base blowdown valve, also blanking cover can be dismantled and carry out degree of depth cleaning to bottom valve pocket, by these two kinds operations with the use of, greatly reduce the frequency of maintenance of valve, add the life-span that valve uses.

Although disclose embodiment of the present utility model and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the utility model and claims, various replacement, change and amendment are all possible, therefore, scope of the present utility model is not limited to the content disclosed in embodiment and accompanying drawing.

Claims

1. for a Novel flat plate gate valve for blowdown pipeline end, comprise valve body, valve seat, flashboard, guiding protecting, valve rod, valve gap and handwheel, in the middle part of valve body, upper end is fixed with a valve gap, is coaxially installed with a handwheel at pedestal upper end; In the middle part of valve body, a valve rod is vertically installed, valve rod Upper vertical is through valve gap, valve rod drives lifting by handwheel, valve rod lower end in valve body is fixed with a flashboard, a valve seat is symmetrically installed with respectively in the valve body of flashboard both sides, it is characterized in that: be all vertically fixed with a guiding protecting at these two valve seats near the one end at valve body center, guiding protecting bottom is shaped with pod apertures, and pod apertures coaxial package is fixed on the sealed end of valve seat; Be that top is shaped with pod apertures at flashboard.

2. the Novel flat plate gate valve for blowdown pipeline end according to claim 1, is characterized in that: the seal face of described valve seat is arranged at intervals with deposited metal layer and rubber seal forms soft, hard double seal; End face between valve seat and valve body is embedded with a spring.

3. the Novel flat plate gate valve for blowdown pipeline end according to claim 1, is characterized in that: be coaxially fixed with a blanking cover at body base, is provided with a blowdown valve on blanking cover top.

4. the Novel flat plate gate valve for blowdown pipeline end according to claim 1, is characterized in that: be coaxially fixed with a positioning cap in valve rod upper end.