CN201992104U

CN201992104U - Sliding plate valve

Info

Publication number: CN201992104U
Application number: CN2011201098403U
Authority: CN
Inventors: 张伟; 王冠男
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-14
Filing date: 2011-04-14
Publication date: 2011-09-28
Anticipated expiration: 2021-04-14

Abstract

The utility model discloses a sliding plate valve, which comprises a valve body, a valve seat and a sliding plate. The valve body, the valve seat and the sliding plate are all provided with through holes allowing a medium to flow through. The positions of the through holes on the valve body and the valve seat correspond to each other. The outer side of the valve body is used for being connected with a pipeline. The valve seat is tightly butted against the sliding plate by the inner side of the valve body. An elastic element is arranged between the outer side of the valve seat and the valve body. A seal working surface for bearing the pressure of a valve cavity is arranged on the inner side the valve seat. The seal working surface is tightly pressed against the sliding plate. The valve seat also comprises a pressure guiding surface for balancing the pressure of the valve cavity. The pressure guiding surface and the seal working surface have opposite directions of being forced. In the sliding plate valve provided by the utility model, the pressure guiding surface is designed on the valve seat and is used for balancing the pressure of the valve cavity, which is borne on the seal working surface of the valve seat, by guiding pipeline pressure; the problem of force balance under the working conditions of a large-caliber pipeline and high pressure of the sliding plate valve is solved; the requirement on the elastic element is reduced; the problem of influence of the fluctuation and impact of the pipeline pressure on the sealing performance of the valve seat is also solved; and the reliable sealing of the valve seat is ensured.

Description

A kind of sluice valve

Technical field

The utility model relates to valve field, relates in particular to a kind of sluice valve.

Background technique

Valve is to be used to regulate or the device of the flow of the conveyance conduit of switching gas, liquid, solid or its mixed medium, is widely used in industrial fields such as oil, chemical industry, electric power, metallurgy, building materials.Traditional valve comprises ball valve, plate valve, camflex valve, gate valve, butterfly valve, sluice valve etc., and wherein, sluice valve is a sluice valve, and it is owing to outstanding characteristics such as volume is little, in light weight, long service life have a good application prospect.

Sluice valve, comprise parts such as valve body, valve seat and slide plate, all offer the corresponding through hole in position so that gas, liquid, solid or its mixed medium etc. flow through on valve seat and the valve body, the slide plate that has through hole equally is under the driving of actuator, and produce slide relative between the sealed working face of valve seat, thereby control the switch and the flow of through hole, also be provided with the elastic element of the valve pocket pressure that sealed working face bore that is used for the balance valve seat between valve seat and the valve body.

At present, the valve seat construction of sluice valve adopts whole board-like or tray type structure usually, its one side cooperates with the internal surface gaps of valve body, the another side opposite with this face becomes sealed working face and contacts slide plate, be typically provided with elastic elements such as dish spring between valve seat and the valve body, elastic element applies one near slide plate direction elastic force to valve seat, thereby keeps valve seat to contact with the good of slide plate, perhaps compensates to avoid seal failure automatically when the valve base sealing working surface weares and teares.Sluice valve is in unlatching or turn off process, the direct contact medium of at least a portion sealed working face of valve seat and bear very big valve pocket pressure, elastic element provides certain elastic force to come this valve pocket pressure of balance, so very high request is proposed elastic element, consider the maximal valve cavity pressure and the upstream pressure that sealed working face bore of sluice valve valve seat in unlatching or turn off process, factors such as valve aperture are directly proportional, when only coming the equilibrium valve cavity pressure under large diameter pipeline or the high pressure operating mode, may make the use of sluice valve limited owing to the elastic force of elastic element is limited by elastic element.

The model utility content

The main technical problems to be solved in the utility model is, a kind of sluice valve is provided, the valve pocket pressure that bears by the sealed working face of introducing pipeline equilibrated valve seat improves the reliability of valve to adapt to harsh operating modes such as large diameter pipeline, high pressure and pipeline pressure fluctuation.

For solving the problems of the technologies described above, the utility model provides a kind of sluice valve, comprise valve body, valve seat and slide plate, described valve body, all have on valve seat and the slide plate and be used for the through hole that MEDIA FLOW is crossed, lead to the hole site correspondence on described valve body and the valve seat, the described valve body outside is used for connecting tube, the inboard is tight against described valve seat on described slide plate, between the described valve seat outside and the described valve body elastic element is set, the inboard comprises the sealed working face that is used to bear valve pocket pressure, described sealed working face presses described slide plate, and described valve seat also comprises the impulse face that is used for the described valve pocket pressure of balance, and described impulse face is subjected to force direction opposite with described sealed working face.

Further, described impulse face is arranged on the internal face of through hole on the described valve seat, perhaps is arranged on the surface in the described valve seat outside.

Preferably, the direction enlarging of described impulse face along described slide plate to described valve body is provided with.

Preferably, the internal face of through hole also has the impulse power-assisted face that is provided with in opposite directions with described impulse face on the described valve body, and described impulse power-assisted face is positioned at the described impulse face outside.

That described impulse face is is smooth, indent, evagination or corrugated anchor ring.

In a kind of mode of execution, described valve body also comprises tracting pressuring hole, and the internal face of described tracting pressuring hole through hole on described valve body extends to described impulse face.

In the another kind of mode of execution, described valve seat also comprises tracting pressuring hole, and described tracting pressuring hole extends to the internal face of through hole on the described valve seat from described impulse face, or extends to the sealed working face of described valve seat from described impulse face.

Preferably, described valve seat is a seat ring, and described valve body inboard also is provided with first groove of the periphery extension of through hole on described valve body, and described seat ring is embedded in described first groove.

Preferably, also inlay the mold insert that hard or soft material are made on the sealed working face of described seat ring.

Further, also comprise outer scraping ring, the surface of described valve body inboard also is provided with second groove, and described second groove is positioned at the periphery of described first groove; Described outer scraping ring is embedded in described second groove, and is pressed between described slide plate and the valve body.

Also comprise stuffing box packing and two valve gaps, described valve body and valve seat all have two, and two described valve bodies and valve seat correspondence are arranged on the both sides up and down of described slide plate, two described valve gaps are distinguished the two ends, the left and right sides of fixedly connected two described valve bodies, and seal the joint of described slide plate and described valve end by described stuffing box packing.

The beneficial effects of the utility model are: the utility model designs the pressure balancing structure of impulse face as valve seat on valve seat, come the valve pocket pressure that bears on the sealed working face of balance valve seat by introducing pipeline pressure, when valve pocket pressure acts on the sealed working face of valve seat, impulse power can act on one side opposite with sealed working face on the valve seat, these two force directions are opposite and cancel out each other, valve seat is fitted tightly with slide plate all the time, solved the valve seat stress balance problem of sluice valve under large diameter pipeline and high pressure operating mode, reduced requirement for element, solve the pipeline pressure fluctuation simultaneously and impacted the influence that the sealability of valve seat is brought, guaranteed the reliable sealing of valve seat.

Description of drawings

Fig. 1 is a kind of embodiment's of the utility model a sluice valve stereogram;

Fig. 2 is a kind of embodiment's of the utility model a sluice valve decomposition texture schematic representation;

Fig. 3 is the sectional view of a kind of embodiment's sluice valve of the utility model at impulse face place;

Fig. 4 offers the sectional view of tracting pressuring hole on valve body for a kind of embodiment's sluice valve of the utility model;

Fig. 5 offers the sectional view of tracting pressuring hole on valve seat for a kind of embodiment's sluice valve of the utility model;

Fig. 6 offers the sectional view of tracting pressuring hole on valve seat for the another kind of embodiment's sluice valve of the utility model;

Fig. 7 is the cross-sectional schematic of a kind of sluice valve of the utility model in full-gear;

Fig. 8 is the cross-sectional schematic of a kind of sluice valve of the utility model at the complete shut-down state;

Fig. 9 is the cross-sectional schematic of a kind of sluice valve of the utility model in half-open position.

Embodiment

In conjunction with the accompanying drawings the utility model is described in further detail below by embodiment.

Please refer to Fig. 1 and Fig. 2, the sluice valve of present embodiment comprises constituent elements such as valve body 1, valve seat, elastic element 4, slide plate 11, mounting flange 5, valve gap 10, connector 9.

Wherein, all have on valve body 1, valve seat and the slide plate 11 and be used for the through hole that MEDIA FLOW is crossed, lead to the hole site correspondence on valve body 1 and the valve seat, these through holes are interconnected under sluice valve standard-sized sheet or half-open state and are formed for holding the valve pocket of medium, according to the concrete purposes of sluice valve, medium comprises liquid, gas, solid or its mixture etc.Valve body 1 outside is connected with pipeline by mounting flange 5, and the inboard is tight against valve seat on the surface of contact of slide plate 11.As shown in Figure 3, between the valve seat outside and the valve body 1 elastic element 4 is set, the inboard comprises the sealed working face 301 that is used to bear valve pocket pressure, and sealed working face 301 presses slide plate 11.Elastic element 4 can be parts such as dish spring, can utilize its elastic force to provide certain pretension compensating action to valve seat, and the sealed working face of valve seat is close on the slide plate 11 all the time.An end of slide plate 11 links to each other with actuator by connector 9, this actuator can drive slide plate 11, and to be close to the sealed working face of valve seat reciprocating, make through hole on the slide plate 11 on the valve seat through hole or produce certain positional deviation with through hole on the valve seat so that adjust the on off state and the flow size of sluice valve.

Valve seat also comprises the impulse face 302 that is used for the equilibrium valve cavity pressure, this impulse face 302 is towards pipeline, with sealed working face 301 be subjected to force direction opposite, and impulse face 302 breaks away from valve body 1 and does not directly contact with valve body 1, when having mobile medium in the valve pocket, because impulse face 302 is towards pipeline, so the pipeline pressure that medium acts on the impulse face has a component along the media flow direction, this component is opposite with the valve pocket pressure direction that sealed working face 301 is born as impulse power, therefore this valve pocket pressure of balance and alleviate the work load of elastic element 4 to a certain extent, when the manifold pressure fluctuation or when having bigger impact to occur, valve seat elastic element 4 behind can adapt to these variations in conjunction with the impulse effect of impulse face 302, make valve seat have good sealing effect, reduced the requirement of elastic element 4, even under large diameter pipeline or high pressure operating mode, when the elastic force of elastic element 4 has in limited time, impulse face 301 still can utilize its good pressure balance effect to guarantee the excellent sealing of valve pocket.

The position of impulse face 302 can be according to the real needs flexible design, the internal face that for example can be arranged on through hole on the valve seat directly becomes the part of this through-hole wall face, perhaps be positioned at the surface in the valve seat outside, preferably, 1 direction enlarging is provided with this impulse face 302 along slide plate 11 to valve body.But the size of impulse face 302 and shape be flexible design also, for example is smooth, indent, evagination or corrugated anchor ring.

Further, in order further to strengthen the impulse effect, the internal face of through hole also has the impulse power-assisted face 104 that is provided with in opposite directions with impulse face 302 on the valve body 1, this impulse power-assisted face 104 is positioned at impulse face 302 outsides, can make medium accommodating in the valve pocket between impulse power-assisted face 104 and impulse face 302 and be convenient to impulse face 302 is applied certain pipeline pressure.

Valve seat can be whole board-like or tray type structure, its one side cooperates with the internal surface of valve body 1, another side becomes sealed working face and contacts slide plate 11, makes valve seat have bigger sealed working face like this, owing to the limited balanced action of playing of the area of impulse face 302 is also limited.Preferably, valve seat adopts the seat ring 3 of annular, and valve body 1 inboard also is provided with peripheral first groove 101 that extends of through hole on valve body 1, and seat ring 3 is embedded in first groove 101, its loop configuration provides the through hole of crossing for MEDIA FLOW equally, and this through hole is corresponding with lead to the hole site on the valve body 1.The ring structure of seat ring 3 has reduced the area of sealed working face greatly, correspondingly reduce it and born the area of valve pocket pressure, under the certain situation of valve pocket pressure, make sealed working face bear less valve pocket pressure, so the valve pocket pressure that the impulse power that impulse face 302 is born is easy to bear with sealed working face 301 balances each other, therefore further reduced requirement for elastic element 4, making between seat ring 3 and the slide plate 11 all the time can reliable sealing, ensures the normal use of sluice valve.

Seat ring 3 can be pressed in first groove 101 in the assembly process of sluice valve in direct embedding, also can cooperate other part location and installation to avoid dislocation certainly in first groove 101.In a kind of mode of execution, sluice valve also comprises the seat ring fixture 2 of annular, this seat ring fixture 2 also is embedded in first groove 101 and surperficial concordant with valve body 1 inboard, this seat ring fixture 2 and valve body 1 are fixedlyed connected by parts such as screws, seat ring 3 is stuck between valve body 1 and the seat ring fixture 2, seat ring 3 can accurately not located before contacting slide plate 11, therefore be convenient to assembly manipulation more.

The medium that flows in the valve pocket enters elastic element 4 and damages part such as dish spring, also is provided with at least one seal ring in first groove 101, is sealed and matched by the sealing circle between seat ring 3, valve body 1 and the seat ring fixture 2.For example present embodiment comprises three seal rings, is separately positioned on the contacting point of seat ring fixture 2 inner edges and seat ring 3 and contacting point and the seat ring 3 and the junction of valve body 1 near impulse face 302 1 sides of seat ring fixture 2 outer rims and first groove 101.

Specification and use scene according to sluice valve, the material of seat ring 3, size and dimension can be selected flexibly, for example material selection steel or pottery, thickness is slightly less than the degree of depth of first groove 101, shape can be rule or irregular round, the sealed working face of seat ring 3 also can be inlayed the mold insert that certain hard or soft material are made, so that reach better sealing effect.

Further, sluice valve also comprises outer scraping ring 14, and the surface of valve body 1 inboard also is provided with the periphery that second groove, 102, the second grooves 102 are positioned at first groove 101; Outer scraping ring 14 is embedded in second groove 102, and be pressed between slide plate 11 and the valve body 1 by the elastic element between outer scraping ring 14 and the valve body 1, avoid sluice valve to be converted to by open mode in the process of half-open or closed condition, the medium that flows moves and damages stuffing box packing 13 even cause the phenomenon of leakage to valve body 1 end along the slit between valve body 1 and the slide plate 11.

After impulse face 302 is set on the valve seat, also can come the valve pocket pressure on the balance valve seat sealed working face 301 by pipeline or valve pocket and external pressure being introduced on this impulse face 302 opening the hole on valve body 1 or the valve seat.In the another kind of mode of execution as shown in Figure 4, valve body 1 also comprises tracting pressuring hole 105, the internal face of this tracting pressuring hole 105 through hole on valve body 1 extends to impulse face 302, when making valve seat bear big valve pocket pressure when having working fluid or gas in the valve pocket, can hold certain medium in this tracting pressuring hole 105, this moment the impulse certain valve pocket pressure of face 302 balances and alleviate the work load of elastic element 4.Tracting pressuring hole 105 also can be arranged on the valve seat, and in the mode of execution as shown in Figure 5, tracting pressuring hole 105 extends to the internal face of through hole on the valve seat from impulse face 302; In the mode of execution as shown in Figure 6, tracting pressuring hole 105 extends to the sealed working face 301 of valve seat from impulse face 302, and this tracting pressuring hole 105 preferably is arranged on a side of valve seat, can be conducted with the through hole on the slide plate 11 in the tracting pressuring hole 105 of this side when sluice valve closes the closed procedure meta.More than in each mode of execution, impulse face 302 can be arranged on the surface in the valve seat outside, and the length of tracting pressuring hole 105, diameter, quantity, position and shape all can be provided with as required flexibly.

For most of sluice valves, please refer to Fig. 1, also comprise stuffing box packing 13 and two valve gaps 10, valve body 1 and seat ring 3 all have two, and two valve bodies 1 and seat ring 3 correspondences are arranged on the both sides up and down of slide plate 11, and two valve gaps 10 are the two ends, the left and right sides of fixedly connected two valve bodies 1 respectively, and by one deck or multi-layer sealed filler 13 drop bars 11 joint with valve body 1 end, slide plate 11 1 ends pass a valve gap 10 and link to each other with actuator, and the other end passes another valve gap 10.The outside of two valve bodies 1 all is fixed for the mounting flange 5 that is connected with pipeline, and this mounting flange 5 is complementary with through hole on the valve body 1.

As shown in Figure 7, when sluice valve was in full-gear, the through hole on valve body 1, seat ring 3 and the slide plate 11 was communicated with, and impulse face 302 bears certain impulse power and makes the sluice valve reliable sealing.

As shown in Figure 8, when sluice valve was in closed condition, through hole on valve body 1 and the seat ring 3 and the through hole on the slide plate 11 misplaced fully, and impulse face 302 bears certain impulse power and makes the sluice valve reliable turn-off.

As shown in Figure 9, when sluice valve is in half-open position, stagger in through hole on valve body 1 and the seat ring 3 and the through hole part on the slide plate 11, valve pocket pressure acts on the sealed working face 301 of seat ring 3, the impulse masterpiece is used on the impulse face 302 opposite with sealed working face on the seat ring 3, these two force directions are opposite and cancel out each other, and seat ring 3 is fitted tightly with slide plate 11 all the time, improved the reliability of sluice valve.

The utility model designs the pressure balancing structure of impulse face 302 as valve seat on valve seat, come the valve pocket pressure that bears on the sealed working face of balance valve seat by introducing pipeline pressure, solved the valve seat stress balance problem of sluice valve under large diameter pipeline and high pressure operating mode, reduced requirement for elastic element, solve the pipeline pressure fluctuation simultaneously and impacted the influence that the sealability of valve seat is brought, guaranteed the reliable sealing of valve seat.

Above content be in conjunction with concrete mode of execution to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.

Claims

1. sluice valve, comprise valve body (1), valve seat and slide plate (11), described valve body (1), all have on valve seat and the slide plate (11) and be used for the through hole that MEDIA FLOW is crossed, lead to the hole site correspondence on described valve body (1) and the valve seat, described valve body (1) outside is used for connecting tube, the inboard is tight against described valve seat on described slide plate (11), between the described valve seat outside and the described valve body (1) elastic element (4) is set, the inboard comprises the sealed working face (301) that is used to bear valve pocket pressure, described sealed working face (301) presses described slide plate (11), it is characterized in that, described valve seat also comprises the impulse face (302) that is used for the described valve pocket pressure of balance, and described impulse face (302) is subjected to force direction opposite with described sealed working face (301).

2. sluice valve as claimed in claim 1 is characterized in that, described impulse face (302) is arranged on the internal face of through hole on the described valve seat, perhaps is arranged on the surface in the described valve seat outside.

3. sluice valve as claimed in claim 1 is characterized in that, the direction enlarging of described impulse face (302) along described slide plate (11) to described valve body (1) is provided with.

4. sluice valve as claimed in claim 3, it is characterized in that, the internal face that described valve body (1) is gone up through hole also has the impulse power-assisted face (104) that is provided with in opposite directions with described impulse face (302), and described impulse power-assisted face (104) is positioned at described impulse face (302) outside.

5. sluice valve as claimed in claim 1 is characterized in that, that described impulse face (302) is is smooth, indent, evagination or corrugated anchor ring.

6. sluice valve as claimed in claim 1 is characterized in that, described valve body (1) also comprises tracting pressuring hole (105), and the internal face that described tracting pressuring hole (105) is gone up through hole from described valve body (1) extends to described impulse face (302).

7. sluice valve as claimed in claim 1, it is characterized in that, described valve seat also comprises tracting pressuring hole (105), described tracting pressuring hole (105) extends to the internal face of through hole on the described valve seat from described impulse face (302), or extends to the sealed working face (301) of described valve seat from described impulse face (302).

8. as each described sluice valve in the claim 1 to 7, it is characterized in that, described valve seat is seat ring (3), described valve body (1) inboard also is provided with first groove (101) from the periphery extension of through hole to described valve body (1) that go up, and described seat ring (3) is embedded in described first groove (101).

9. sluice valve as claimed in claim 8 is characterized in that, also inlays the mold insert that hard or soft material are made on the sealed working face (301) of described seat ring (3).

10. sluice valve as claimed in claim 8 is characterized in that, also comprises outer scraping ring (14), and the inboard surface of described valve body (1) also is provided with second groove (102), and described second groove (102) is positioned at the periphery of described first groove (101); Described outer scraping ring (14) is embedded in described second groove (102), and is pressed between described slide plate (11) and the valve body (1).