CN208431401U - A kind of gate valve with gum cover - Google Patents

Abstract

The utility model relates to a kind of gate valves with gum cover, including valve body, the operating mechanism that flashboard and an operation flashboard move up and down, the rubber bushing of an annular is respectively inlaid on the media transport path of flashboard two sides, there is a becket in each rubber bushing, each rubber bushing is equipped with shoulder far from one end of flashboard and leans against on the end face of valve body, the opposite end face of two rubber bushings is seal face, the internal diameter of the rubber bushing is gradually increased from seal face toward far from flashboard direction, to solve the problems, such as that the sealing surface that medium material can be sticked to rubber bushing when being turned on or off flashboard influences its sealing effect.

Description

A kind of gate valve with gum cover

Technical field

The utility model relates to valve fields, are specifically related to a kind of gate valve with gum cover.

Background technique

Gate valve is the control unit in pipe-line transportation system, for controlling the opening and closing of transfer passage.Gate valve generally includes valve Body, flashboard and the operating mechanism that moves up and down of operation flashboard need to be arranged media transport path and defeated perpendicular to medium on valve body The flashboard active tunnel in channel is sent, then flashboard in the flashboard active tunnel of valve body, the top attended operation lock of valve body The operating mechanism that plate moves up and down.

In actual use, the media transport path of valve body is connected gate valve with external pipe, convey it is some containing particle, When the media material such as lime-ash, ore pulp, powder, certain media material is easy to accumulate the inner wall and flashboard in valve body media transfer passage In active tunnel, it is easy that valve body is caused to corrode and is worn, influences the service life of entire gate valve；Simultaneously because medium material accumulates In flashboard active tunnel, the normal switching-off of flashboard just will affect, influence the air-tightness of gate valve closed state, and cause to flashboard Heel and toe wear.

In order to solve this problem, a kind of lock with gum cover is disclosed in the patent of Publication No. CN104235411A Valve is inlayed there are two the rubber bushing of annular on the valve body media transfer passage of flashboard two sides, to prevent the medium of conveying Material enters the flashboard active tunnel of valve body and the inner wall of valve body media transfer passage.Although the program solves to a certain extent Above-mentioned problem, but still there is medium material in the case of some viscosity ratios are larger and be sticked on rubber bushing and flashboard The problem of, when being turned on or off flashboard, these medium materials can be sticked on the sealing surface of rubber bushing, influence its sealing effect Fruit.

Utility model content

The utility model is intended to provide a kind of gate valve with gum cover, to solve the above problem.

Concrete scheme is as follows:

A kind of gate valve with gum cover, including valve body, flashboard, valve body are equipped with media transport path and convey perpendicular to medium The flashboard active tunnel in channel, in the flashboard active tunnel of valve body, the top of valve body connects on an operation flashboard flashboard The operating mechanism of lower movement is respectively inlaid with the rubber bushing of an annular, each rubber lining on the media transport path of flashboard two sides All there is a becket, each rubber bushing is equipped with shoulder far from one end of flashboard and leans against on the end face of valve body, two rubbers in set The opposite end face of glue bushing is seal face, and the internal diameter of the rubber bushing gradually increases from seal face toward far from flashboard direction Greatly；Flashboard moves down when gate valve is closed, and flashboard squeezes two rubber bushings and the seal face of two rubber bushings is distinguished It is tightly attached on two sides of flashboard；Flashboard moves up when gate valve is opened, and flashboard is detached from two rubber bushings, two rubber linings It is in sealing contact to cover opposite seal face.

Further, the angle between the inner wall of the rubber bushing and the axis of the rubber bushing is 8-12 °.

Further, the seal face of the rubber bushing has multiple spaced grooves.

Further, the shape of the groove is arc-shaped.

Further, lateral surface of the rubber bushing close to flashboard one end is equipped with outer chamfer.

Further, the outer chamfer is rounded corners.

Further, the valve body is provided with a rubber gasket above flashboard active tunnel, the rubber gasket Middle part has the through-hole that passes through for gate valve, the inner wall of the through-hole to the flashboard for passing through the through-hole have one toward gate valve extruding Power.

Gate valve provided by the utility model with gum cover has the advantage that the utility model compared with prior art The inner wall of the rubber bushing of the gate valve of offer is the toroidal that its internal diameter is gradually increased from seal face toward separate flashboard direction Shape, in pumped (conveying) medium material, the seal face of two rubber bushings seals against each other contact, and seal face two sides are V-shaped, Therefore its arrival end side will increase the flow velocity of medium material, and outlet end side can then reduce the flow velocity of medium material, and And its infall generates vortex, a possibility that medium material is sticked to rubber bushing is reduced, to guarantee the leakproofness of rubber bushing.

Detailed description of the invention

Fig. 1 shows the cross-sectional view of gate valve.

Fig. 2 shows the enlarged drawings at A in Fig. 1.

Fig. 3 shows the schematic diagram for having reeded rubber bushing on seal face.

Fig. 4 shows the enlarged drawing in Fig. 1 at B.

Specific embodiment

To further illustrate each embodiment, the utility model is provided with attached drawing.These attached drawings are in the utility model discloses A part of appearance mainly to illustrate embodiment, and can cooperate the associated description of specification former come the running for explaining embodiment Reason.Cooperation refers to these contents, and those of ordinary skill in the art will be understood that other possible embodiments and sheet are practical new The advantages of type.Component in figure is not necessarily to scale, and similar component symbol is conventionally used to indicate similar component.

Now in conjunction with the drawings and specific embodiments, the present invention will be further described.

As depicted in figs. 1 and 2, the utility model provides a kind of gate valve with gum cover, which includes valve body 1, lock Plate 2, valve body 1 are equipped with media transport path 10 and the flashboard active tunnel 12 perpendicular to media transport path, and flashboard 2 is mounted in valve body Flashboard active tunnel in, the top of valve body 1 connects the operating mechanism 3 that an operation flashboard moves up and down.Wherein, operating mechanism 3 include bracket 30, handwheel 32, screw rod 34, rotating nut 36 and flashboard connector 38, and the lower end of bracket 30 is fixedly mounted on valve body On 1, rotating nut 36 is then fixed on the middle part of 30 upper end of bracket, and screw rod 34 passes through rotating nut 36, and the lower end of screw rod 34 is affixed Flashboard connector 38, handwheel 32 are connect with the threaded upper ends of screw rod 34, and the upper end of flashboard 2 is fixedly connected with flashboard connector 38, When handwheel 32 rotates clockwise or counterclockwise, can flashboard 2 be put down or be lifted, thus realize the gate valve closing or Person opens, and above-mentioned show be manually mode, however, not limited to this, can also using pneumatically, the automatic mode such as surge, example Such as replace handwheel 32 with motor with rotary screw and realize the closing or unlatching of ceramic gate valve.

With reference to Fig. 1 and Fig. 2, the rubber bushing 4 of an annular is respectively inlaid on the media transport path of 2 two sides of flashboard, each All there is a becket 5, the mode wherein buried within becket 5 is formed in rubber bushing 4 (such as in rubber in rubber bushing 4 Becket 5 is placed in its shaping dies by bushing 4 when shaping, and becket 5 is then interior after forming is embedded in rubber bushing 4), becket 5 are intensity in order to guarantee rubber bushing 4 and increase its rebound dynamics, guarantee leakproofness.As shown in Fig. 2, becket 5 is cut Face is in flat, and the length direction in its section and the side of flashboard 2 are perpendicular, to further increase returning for rubber bushing 4 Elastic force degree.Each rubber bushing 4 is equipped with shoulder 40 far from one end of flashboard 2 and leans against on the end face of valve body 1, to make rubber bushing 4 More preferably on valve body 1, the outer end face of valve body is equipped with groove and matches with the shoulder 40 of rubber bushing 4, defeated to further increase Send the leakproofness of pipeline.The opposite end face of two rubber bushings 4 is seal face 42, and the internal diameter of rubber bushing 4 is from sealing End face 42 is gradually increased toward far from flashboard direction, i.e., the inner wall of rubber bushing 4 is its internal diameter from seal face toward far from flashboard side To the bell shape being gradually increased.When the gate valve is closed, flashboard 2 is moved down, and flashboard 2 squeezes two rubber bushings 4 and makes The seal face 42 of two rubber bushings 4 is tightly attached to respectively on two sides of flashboard 2, by 10 lock of media transport path of valve body It is disconnected, and the medium material in media transport path 10 will not be flowed out from flashboard active tunnel 12；When the gate valve is opened, lock Plate 2 moves up, and flashboard 2 is detached from two rubber bushings 4, and the opposite seal face 42 of two rubber bushings is in sealing contact, medium Transfer passage 10 is connected to, and the medium material in media transport path 10 will not be flowed out from flashboard active tunnel 12.

As shown in Fig. 2, the inner wall due to rubber bushing 4 is gradually increased for its internal diameter from seal face toward far from flashboard direction Bell shape, when dielectric object stream is through the gate valve, the internal diameter of arrival end from large to small, therefore flow velocity increase, outlet end Internal diameter changes from small to big, then flow velocity reduces, and can be in the position of two 4 seal faces of rubber bushing being in contact toward at outlet end Vortex is formed, the inner wall of rubber bushing 4 can be washed away, be sticked on the inner wall of rubber bushing 4 to reduce medium material Possibility, therefore can guarantee its leakproofness.

In the present embodiment, it is preferred that the angle α between the inner wall of the rubber bushing and the axis of the rubber bushing is 8-12 °, make it in the case where the flow effect of the unit time to media transport path 10 is little, in rubber bushing 4 Wall has preferable scouring effect, and it washes away that dynamics is moderate, will not influence the service life of rubber bushing 4.

As shown in figure 3, although the channel of 4 bell shape of above-mentioned rubber bushing, which can reduce medium material, is sticked to rubber bushing 4 and flashboard 2 on a possibility that, but still can have some medium materials and be sticked on flashboard 2, lift or put down in flashboard 2 When, these medium materials may enter on 4 seal face 42 of rubber bushing, to influence its sealing performance.Therefore, at this In embodiment, multiple spaced grooves 420 are equipped in the seal face 42 of the rubber bushing 4.Lift in flashboard 2 or When putting down, the seal face 42 of rubber bushing 4 can scrape the medium material for being sticked to flashboard 2 in groove 420, therefore will not influence The leakproofness of rubber bushing 4.Wherein the groove 420 be preferably shaped to it is arc-shaped.

With reference to Fig. 1-Fig. 3, in the present embodiment, lateral surface of the rubber bushing 4 close to 2 one end of flashboard is equipped with to fall outside Angle, in order to which flashboard 2 passes through rubber bushing 4, and the setting V-shape of 2 lower end of flashboard flashboard, the outer chamfer is preferably circular Angle, further flashboard 2 to be convenient for pass through rubber bushing 4.

With reference to Fig. 4, in the present embodiment, the valve body 1 is provided with a rubber gasket above flashboard active tunnel 12 5, the middle part of the rubber gasket has the through-hole 50 passed through for gate valve, and the inner wall of the through-hole 50 is to the flashboard for passing through the through-hole 50 The sealing of 2 Elastic Contacts, rubber gasket 5, which is screwed, to be mounted on valve body 1.The flashboard 2 of the gate valve is close by rubber Packing 5 replaces stuffing-box and filler to realize the sealing of gate valve 2, thus the overall weight of the gate valve can be mitigated and reduce its at This.

Although specifically showing and describing the utility model in conjunction with preferred embodiment, those skilled in the art is answered This is understood, in the spirit and scope for not departing from the utility model defined by the appended claims, in form and details On the utility model can be made a variety of changes, be the protection scope of the utility model.

Claims (6)

1. a kind of gate valve with gum cover, including valve body, flashboard, valve body is equipped with media transport path and conveys perpendicular to medium logical The flashboard active tunnel in road, for flashboard in the flashboard active tunnel of valve body, the top of valve body connects an operation flashboard or more Mobile operating mechanism, it is characterised in that: the rubber bushing of an annular is respectively inlaid on the media transport path of flashboard two sides, often All there is a becket, each rubber bushing is equipped with the end face that shoulder leans against valve body far from one end of flashboard in a rubber bushing On, the opposite end face of two rubber bushings is seal face, and the internal diameter of the rubber bushing is from seal face toward far from flashboard side To being gradually increased；Flashboard moves down when gate valve is closed, and flashboard squeezes the sealing that two rubber bushings make two rubber bushings End face is tightly attached to respectively on two sides of flashboard；Flashboard moves up when gate valve is opened, flashboard two rubber bushings of disengaging, and two The opposite seal face of a rubber bushing is in sealing contact；The seal face of the rubber bushing has multiple spaced recessed Slot.

2. gate valve according to claim 1, it is characterised in that: the inner wall of the rubber bushing and the axis of the rubber bushing Between angle be 8-12 °.

3. gate valve according to claim 1, it is characterised in that: the shape of the groove is arc-shaped.

4. gate valve according to claim 1, it is characterised in that: the rubber bushing is set on the lateral surface of flashboard one end There is outer chamfer.

5. gate valve according to claim 4, it is characterised in that: the outer chamfer is rounded corners.

6. gate valve according to claim 1, it is characterised in that: the valve body is provided with a rubber above flashboard active tunnel Glue gasket, the middle part of the rubber gasket have the through-hole passed through for gate valve, and the inner wall of the through-hole is to the lock for passing through the through-hole The sealing of plate Elastic Contact.