CN202209430U

CN202209430U - Hydraulic control switch valve

Info

Publication number: CN202209430U
Application number: CN2011203432456U
Authority: CN
Inventors: 刘工勤
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-14
Filing date: 2011-09-14
Publication date: 2012-05-02
Anticipated expiration: 2021-09-14

Abstract

The utility model relates to a valve, in particular to a hydraulic control switch valve which solves the problem that an existing hydraulic control switch valve is not good in tightness. The hydraulic control switch valve comprises a valve body, a valve cap and a valve rod, wherein a hydraulic control port is arranged at the top of the valve cap; a valve port which divides an inner cavity of the valve body into a flow inlet cavity and a flow outlet cavity is arranged in the valve body, and the valve port is matched with a valve clack; the valve cap is formed by an upper cap body and a lower cap body at the two ends of the hydraulic control switch valve, and the upper cap body and the lower cap body are fixedly connected with each other through bolts; a valve diaphragm is pressed and connected between the upper cap body and the lower cap body in a sealed manner and is sleeved on the valve rod in a sealed manner so as to divide the valve cap into an upper cavity positioned in the upper cap body and a lower cavity positioned in the lower cap body; an upper cushion plate and a lower cushion plate which are fixed on the valve rod are respectively arranged on the upper surface and the lower surface of the valve diaphragm; springs are arranged between the upper cushion plate and the top of the upper cap body; and a central hole is arranged in the valve rod, and a through hole is arranged between the central hole and the bottom of the lower cavity. The hydraulic control switch valve is ingenious in design, and can be widely applied to conveying pipelines of all gases and liquids.

Description

The fluid-control starting and stopping valve

Technical field

The utility model relates to valve, is specially a kind of fluid-control starting and stopping valve.

Background technique

At present, be equipped with the medium that the fluid-control starting and stopping valve comes conveying in the opening and closing pipeline on the pipeline of delivering hot water, coal gas etc.The fluid-control starting and stopping valve comprises the valve body that has the fluid inlet/outlet, the valve rod that is fixed in the valve gap on the valve body and passes valve gap; Be provided with in the valve body body cavity is divided into influent stream chamber and the valve port that effluents chamber two-part and cooperatively interact with the flap of stem bottom, the fluid inlet of valve body communicates with the influent stream chamber and fluid output communicates with the chamber of effluenting; Its working principle is to make the flap of stem bottom open and the valve port of closed communicating influent stream chamber with the chamber of effluenting through moving up and down of control valve rod.The mode of existing control stem movement often adopts the pressure that from water pump, is extracted into the water in the valve gap top hydraulic control mouth to control; But because the poor sealing of valve body; The water electrode leakiness in valve body, thereby spring in the valve body is got rusty or damages other interior structures of valve body; If when feeding gas such as coal gas in the pipeline simultaneously, can influence the use of combustion gas.Disclose the technological scheme of a kind of " hydraulic control switch valve " like Chinese patent ZL93206695X, this scheme only is applicable to that medium is the situation of liquid, and the bottom of valve rod is provided with Returnning spring, makes Returnning spring cause corrosion malfunctioning medium-term and long-term immersion of liquid; Simultaneously the influent stream chamber is positioned at the below in the chamber of effluenting, and promptly the flow direction of liquid in valve body goes out on advancing under being, thereby can make the foreign material in the liquid accumulate in the switch that influences valve body in the influent stream chamber easily like this.

Summary of the invention

The utility model provides a kind of fluid-control starting and stopping valve in order to solve the existing bad problem of fluid-control starting and stopping valve seal property.

The utility model is to adopt following technological scheme to realize: the fluid-control starting and stopping valve comprises the valve body, valve gap and the valve rod that have the fluid inlet/outlet; The top of valve gap has the hydraulic control mouth; Valve rod passes valve gap and cooperates with the hydraulic control mouth is movable, and the bottom of valve rod is fixed with flap; Be provided with in the valve body body cavity is divided into influent stream chamber and the valve port that effluents chamber two-part and cooperatively interact with flap, the fluid inlet of valve body communicates with the influent stream chamber and fluid output communicates with the chamber of effluenting; Valve gap is made up of through upper cover body and lower cover that bolt connects two ends; Sealing is crimped with sealing and is placed in the valve film on the valve rod between upper cover body and the lower cover, thereby the valve gap inner chamber is divided into upper plenum that is positioned at upper cover body and the following cavity that is positioned at lower cover; Lower cover is positioned at down that the part of cavity below is in contact with one another with valve rod and movable the cooperation, lower cover plate and valve rod be in contact with one another partly and between the valve rod and be sealed with first seal ring; Be respectively equipped with the punch pad, the lower bolster that are fixed on the valve rod on the upper and lower surfaces of valve film; Be provided with spring between punch pad and the upper cover body top; Have center hole on the valve rod, have through hole between the bottom of center hole and following cavity; Be sealed with second seal ring between the top of valve rod and the upper cover body.During work; Thereby opening water pump links to each other through pipeline the water outlet of water pump the water in the water pump is extracted in the hydraulic control mouth with the hydraulic control mouth; In cavity under the through hole entering of the bottom under center hole, connection center hole and the valve gap of valve rod of water under the effect of pressure; And be provided with second seal ring between the top of valve rod and the upper cover body, thereby can prevent like this that sealing drains to gets rusty spring in the upper plenum; Increase along with the water yield in the following cavity; Promotion valve film moves upward under the pressure effect of water; Make the spring compression between punch pad and upper cover body top; Thereby the valve rod of shim moves upward about on drive and the valve film upper and lower surfaces, and the flap that is fixed in stem bottom is opened the valve port that is communicated with the influent stream chamber and the chamber of effluenting, and the interior medium of pipeline just can pass through smoothly like this; And upper cover body below following cavity and be provided with first seal ring between valve rod contact segment and the valve rod, thereby prevent down that the interior water of cavity leaks down and medium reacts, eliminated potential safety hazard.When needs are blinded off a line; Water pump cuts out; Because the water under the valve gap in the cavity has not had pressure to make spring restore to the original state gradually, move downward thereby promote the valve film, drive then with valve film upper and lower surfaces on up and down the valve rod of shim move downward; The flap that is fixed in stem bottom will be communicated with the influent stream chamber closes with the valve port in the chamber of effluenting, and the medium in the pipeline just can't pass through like this.

Further, said influent stream chamber is positioned at the top in the chamber of effluenting, and the foreign material in the liquid can not remained in the valve body, can be with fluid removal; Said valve rod is provided with the annular boss between lower bolster and through hole; Thereby the upper surface of said punch pad is provided with the nut that is connected with threaded stem punch pad, valve film and lower bolster is pressed on the annular boss; Be provided with pad between said punch pad and the nut, the better tightness about can making like this between the cavity.

The utility model is simple in structure, design is ingenious, and good seal performance can be used for opening and closing gas and liquid two media, has solved the bad problem of existing fluid-control starting and stopping valve seal property, can be in the delivery line of all gas or liquid.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Among the figure: the 1-valve body; The 2-upper cover body; The 3-lower cover; The 4-valve rod; 5-hydraulic control mouth; The 6-chamber of effluenting; 7-influent stream chamber; The 8-flap; 9-valve film; The 10-upper plenum; Cavity under the 11-; 12-first seal ring; The 13-punch pad; The 14-lower bolster; The 15-spring; The 16-center hole; The 17-through hole; 18-second seal ring; The 19-nut; The 20-pad.

Embodiment

The fluid-control starting and stopping valve comprises the valve body 1, valve gap and the valve rod 4 that have the fluid inlet/outlet; The top of valve gap has hydraulic control mouth 5; Valve rod 4 passes valve gap and cooperates with 5 activities of hydraulic control mouth, and the bottom of valve rod 4 is fixed with flap 8; Be provided with in the valve body 1 body cavity is divided into influent stream chamber 7 and the valve port that effluents chamber 6 two-part and cooperatively interact with flap 4, the fluid inlet of valve body 1 communicates with the influent stream chamber and fluid output communicates with the chamber of effluenting; Valve gap is made up of with lower cover 3 through the upper cover body 2 that bolt connects two ends; Sealing is crimped with sealing and is placed in the valve film 9 on the valve rod 4 between upper cover body 2 and the lower cover 3, thereby the valve gap inner chamber is divided into upper plenum 10 that is positioned at upper cover body 2 and the following cavity 11 that is positioned at lower cover 3; Lower cover 3 is positioned at down that the part of cavity 11 belows is in contact with one another with valve rod 4 and movable the cooperation, lower cover plate 3 and valve rod 4 be in contact with one another partly and between the valve rod 4 and be sealed with first seal ring 12; Be respectively equipped with the punch pad 13, the lower bolster 14 that are fixed on the valve rod 4 on the upper and lower surfaces of valve film 9; Be provided with spring 15 between the top of punch pad 13 and upper cover body 2; Have center hole 16 on the valve rod 4, have through hole 17 between center hole 16 and following cavity 11 bottoms; Be sealed with second seal ring 18 between the hydraulic control mouth 5 of the top of valve rod 4 and upper cover body 2.Said influent stream chamber 7 is positioned at the top in the chamber 6 of effluenting.Said valve rod 4 is provided with the annular boss between lower bolster 14 and through hole 17; Thereby the upper surface of said punch pad 13 is provided with the nut 19 that is threaded with valve rod 14 punch pad 13, valve film 9 and lower bolster 14 is pressed on the annular boss.Be provided with pad 20 between said punch pad 13 and the nut 19.

Claims

1. the fluid-control starting and stopping valve comprises the valve body (1), valve gap and the valve rod (4) that have the fluid inlet/outlet; The top of valve gap has hydraulic control mouth (5); Valve rod (4) passes valve gap and cooperates with hydraulic control mouth (5) is movable, and the bottom of valve rod (4) is fixed with flap (8); Be provided with the valve port that body cavity is divided into influent stream chamber (7) and the chamber of effluenting (6) two-part and cooperatively interacts with flap (4) in the valve body (1), the fluid inlet of valve body (1) communicates with the influent stream chamber and fluid output communicates with the chamber of effluenting; It is characterized in that: valve gap is made up of through upper cover body (2) and lower cover (3) that bolt connects two ends; Sealing is crimped with sealing and is placed in the valve film (9) on the valve rod (4) between upper cover body (2) and the lower cover (3), thereby the valve gap inner chamber is divided into upper plenum (10) that is positioned at upper cover body (2) and the following cavity (11) that is positioned at lower cover (3); Lower cover (3) is positioned at down that the part of cavity (11) below is in contact with one another with valve rod (4) and movable the cooperation, lower cover plate (3) and valve rod (4) be in contact with one another partly and between the valve rod (4) and be sealed with first seal ring (12); Be respectively equipped with the punch pad (13), the lower bolster (14) that are fixed on the valve rod (4) on the upper and lower surfaces of valve film (9); Be provided with spring (15) between the top of punch pad (13) and upper cover body (2); Have center hole (16) on the valve rod (4), have through hole (17) between center hole (16) and following cavity (11) bottom; Be sealed with second seal ring (18) between the hydraulic control mouth (5) of the top of valve rod (4) and upper cover body (2).

2. a kind of fluid-control starting and stopping valve according to claim 1 is characterized in that: said influent stream chamber (7) is positioned at the top of the chamber of effluenting (6).

3. a kind of fluid-control starting and stopping valve according to claim 1 and 2 is characterized in that: said valve rod (4) is provided with the annular boss that is positioned between lower bolster (14) and the through hole (17); The upper surface of said punch pad (13) is provided with the nut (19) that is threaded with valve rod (14) thereby punch pad (13), valve film (9) and lower bolster (14) is pressed on the annular boss.

4. a kind of fluid-control starting and stopping valve according to claim 3 is characterized in that: be provided with pad (20) between said punch pad (13) and the nut (19).