CN203477340U

CN203477340U - Watertight stop valve

Info

Publication number: CN203477340U
Application number: CN201320546929.5U
Authority: CN
Inventors: 岑自成
Original assignee: CHENGDU YIFAN PLASTIC Co Ltd
Current assignee: CHENGDU YIFAN PLASTIC Co Ltd
Priority date: 2013-09-04
Filing date: 2013-09-04
Publication date: 2014-03-12
Anticipated expiration: 2023-09-04

Abstract

The utility model discloses a watertight stop valve, belongs to the field of stop valves and mainly solves the problems of poor sealing performance of existing stop valves and service life shortening of existing stop valves due to the fact that the valve bodies are often in contact with water and air. The watertight stop valve comprises a valve body and a valve seat, wherein the valve body comprises a valve cover connected with the valve seat, a valve rod penetrating the valve cover, a handwheel fixed at the upper end of the valve rod and a valve flap connected with the lower end of the valve rod; the valve seat comprises a water inlet cavity, a plugging cavity and a water outlet cavity which are sequentially communicated, the water inlet cavity and the plugging cavity are communicated through a horizontal guide hole, and the plugging cavity and the water outlet cavity are communicated through a vertical guide hole. The watertight stop valve is characterized in that the lower end of the valve flap is matched with the horizontal guide hole in size, the upper end of the valve flap is matched with the plugging cavity in size, and the valve flap is 1-10 mm higher than the vertical guide hole. The watertight stop valve has the advantages of long service life, high cost efficiency, good sealing performance and the like.

Description

Waterproof infitration type stop valve

Technical field

The utility model relates to a kind of stop valve, and what be specifically related to is waterproof infitration type stop valve.

Background technique

The valve rod of existing stop valve all adopts the Placement with valve gap screw thread rotation, gets final product the position of the flap of effective regulating valve stem lower end connection by which, then can effectively realize the adjusting of water flow.But the stem structure defective tightness under which, when stop valve is opened, usually occur that the water body circulating in valve seat flows into valve inner along the hole of flap and valve base chamber, and the feature due to this structure, when stop valve is opened, this valve rod can extend valve gap, be exposed in air, and then cause each parts in valve body to contact rear oxidation with water body with air, reduce the working life of stop valve.Meanwhile, the moment water body pressure that leaves pod apertures due to flap is larger, and hydraulic pressure partly impacts on valve gap, may overflow valve body by the hole between valve gap and valve rod, and then causes the sealing of stop valve not strong.

Model utility content

The purpose of this utility model is to solve the strong and valve body of existing stop valve sealing and usually contact the problem that causes the life-span to reduce with water body with air, the waterproof infitration type stop valve of provide that a kind of cost performance is high, good airproof performance, life-span being grown.

For solving above-mentioned shortcoming, the technical solution of the utility model is as follows:

Waterproof infitration type stop valve, is comprised of valve body and valve seat, and described valve body comprises the valve gap being connected with valve seat, runs through the valve rod of this valve gap, is fixed on the handwheel of valve rod upper end, the flap being connected with valve rod lower end; Described valve seat comprises water-inlet cavity, shutoff chamber and the water chamber being communicated with in turn, between described water-inlet cavity and shutoff chamber, by horizontal pod apertures, be communicated with, between described shutoff chamber and water chamber, by vertical pod apertures, be communicated with, described flap lower end size matches with horizontal pod apertures size, and this flap upper end size matches with shutoff chamber size; Described flap height is higher than vertical pod apertures height 1mm～10mm.

As optimum set-up mode, described flap is connected with valve rod lower end by connecting body.

As a kind of preferred, valve rod lower end is provided with outside thread, is provided with the internal thread matching with this outside thread on this connecting body.

More preferably, described connecting body and flap are one-body molded.

For the ease of valve inner structure is safeguarded, changed, described valve gap is threaded with valve seat.

Not strong in order to prevent the sealing of valve body own, cause the situation that current overflow to occur, described valve gap and valve rod joint are provided with seal ring, and this valve gap and valve seat joint are provided with pad.

The utility model compared with prior art, has the following advantages and beneficial effect:

1, the utility model flap lower end size matches with horizontal pod apertures size, flap upper end big or smallly matches with shutoff chamber size, flap height is higher than vertical pod apertures height 1mm～10mm, by above-mentioned, arrange while effectively preventing that in water-inlet cavity, water body enters water chamber by shutoff chamber, in shutoff chamber, water body infiltrates in valve body; Meanwhile, this flap can effectively be alleviated the impact of water body to valve body bonnet in water-inlet cavity, avoids flowing out the hole of water body between valve gap and valve rod, improves sealing of the present utility model and increases working life of the present utility model;

2, the utility model flap is connected with valve rod by connecting body, and be connected with the internal thread on connecting body by valve rod lower end outside thread, by this setting, thereby can reach by valve rod and connecting body relative position and move the effect that drives flap to move, and then avoid in existing design valve rod to be exposed in air causing the situations such as oxidation to occur, effectively avoid the valve rod after oxidation to cause water pollution after contacting with water body, effective protection of the environment and working life of the present utility model;

3, the utility model valve gap and valve rod joint are provided with seal ring, and this valve gap and valve seat joint are provided with pad, more effectively improve sealing of the present utility model;

4, the utlity model has life-span length, good airproof performance, cost performance advantages of higher.

Accompanying drawing explanation

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

Wherein, the component name that in figure, reference character is corresponding is called:

1-valve gap, 2-valve rod, 3-handwheel, 4-flap, the horizontal pod apertures of 5-, the vertical pod apertures of 6-, 7-connecting body.

Embodiment

Below in conjunction with embodiment and accompanying drawing thereof, the utility model is described in further detail, but mode of execution of the present utility model is not limited to this.

Embodiment

Waterproof infitration type stop valve, valve body and valve seat, consist of, and valve body mainly consists of valve gap 1, valve rod 2, handwheel 3, flap 4, valve seat is mainly comprised of the water-inlet cavity being communicated with in turn, shutoff chamber and water chamber, as shown in Figure 1, the annexation of above-mentioned each component is as follows:

Valve rod 2 runs through valve gap 1, the valve rod 2 upper ends handwheel 3 that is fixedly connected with or is threaded, and this handwheel 3 also can be fixed on valve rod 2 upper ends by tightening nut, and these valve rod 2 lower ends are connected with flap 4; Between described water-inlet cavity and shutoff chamber, by horizontal pod apertures 5, be communicated with, between described shutoff chamber and water chamber, by vertical pod apertures 6, be communicated with, this valve body is connected on the shutoff chamber of valve seat.

Meanwhile, in the utility model, flap 4 lower end sizes are set to match with horizontal pod apertures 5 sizes, and flap 4 upper end sizes are set to match with shutoff chamber size; By this, water body in effective alleviation water-inlet cavity is set and directly impacts the pressure on valve gap, and then effectively avoid occurring because water body impact force causes more greatly the situation that water body overflows from the hole between valve rod and valve gap, increase sealability of the present utility model.In the utility model, flap 4 is highly set to, higher than vertical pod apertures 6 height 1mm～10mm, can effectively avoid shutoff chamber class water body to enter valve inner by vertical pod apertures, thereby increase working life of the present utility model.

In order to reach the effect of being convenient to better dismounting or installing, described flap 4 is connected in valve rod 2 lower ends by connecting body 7, as shown in Figure 1.This connecting body is provided with internal thread, and this valve rod lower end is provided with outside thread, by connecting body internal thread and valve rod outside thread, is connected and can be realized better the function that flap in the utility model is detachable or install.

And the setting being connected by connecting body internal thread and valve rod outside thread, effectively realize the position relationship of valve rod and valve gap, by valve rod and connecting body position, change and then realize the movement of flap, effectively avoid valve rod to contact with water and air and cause oxidation and then polluted-water.Thereby above-mentioned setting also has advantages of protection of the environment and increases working life.

As optimum set-up mode, described connecting body 7 is one-body molded with flap 4, as shown in Figure 1.

In order to realize better replacing and the maintenance of flap, described valve gap 1 is threaded with valve seat.

At valve body and valve seat, be used in conjunction with in the process that water flow is controlled, current likely can overflow along valve body and gap, valve seat joint, and then cause sealability of the present utility model not strong, thereby, described valve gap and valve rod joint are provided with seal ring, this valve gap and valve seat joint are provided with pad, can effectively stop water body to overflow, and increase sealability of the present utility model.

According to above design, just can realize preferably the utility model.

Claims

1. waterproof infitration type stop valve, valve body and valve seat, consist of, described valve body comprises the valve gap (1) being connected with valve seat, runs through the valve rod (2) of this valve gap (1), be fixed on the handwheel (3) of valve rod (2) upper end, the flap (4) being connected with valve rod (2) lower end; Described valve seat comprises water-inlet cavity, shutoff chamber and the water chamber being communicated with in turn, between described water-inlet cavity and shutoff chamber, by horizontal pod apertures (5), be communicated with, between described shutoff chamber and water chamber, by vertical pod apertures (6), be communicated with, it is characterized in that: described flap (4) lower end size matches with horizontal pod apertures (5) size, this flap (4) upper end size matches with shutoff chamber size; Described flap (4) height is higher than vertical pod apertures (6) height 1mm～10mm.

2. waterproof infitration type stop valve according to claim 1, is characterized in that: described flap (4) is connected in valve rod (2) lower end by connecting body (7).

3. waterproof infitration type stop valve according to claim 2, is characterized in that: described valve rod (2) lower end is provided with outside thread, and described connecting body (7) is provided with the internal thread matching with valve rod (2) lower end outside thread.

4. waterproof infitration type stop valve according to claim 3, is characterized in that: described connecting body (7) is one-body molded with flap (4).

5. waterproof infitration type stop valve according to claim 4, is characterized in that: described valve gap (1) is threaded with valve seat.

6. waterproof infitration type stop valve according to claim 5, is characterized in that: described valve gap (1) is provided with seal ring with valve rod (2) joint, and this valve gap (1) is provided with pad with valve seat joint.