CN87209338U

CN87209338U - Self-closing ball valve

Info

Publication number: CN87209338U
Application number: CN 87209338
Authority: CN
Inventors: 张成志; 许书勤; 王硕亭
Original assignee: AGRICULTURAL WATER OFFICE OF HENAN WATER CONSERVANCY DEPARTMENT
Current assignee: AGRICULTURAL WATER OFFICE OF HENAN WATER CONSERVANCY DEPARTMENT
Priority date: 1987-06-19
Filing date: 1987-06-19
Publication date: 1988-09-21

Abstract

A self-closing ball valve of the utility model is one of the duct valves, which is used for controlling the water input device, the backspin, the discharge and the fluid flow of a low tesion water supply duct. The utility model has the advantages of simple manufacture, convenient use, positive effects of stopping water and low cost. The essential technical characteristic of the self-closing ball valve is that the three way of the pipeline and the valve combine into one, and that the sealing ring of a conical tube and an elastic valve core in the shape of a ball open or close automatically by means of water pressure and buoyancy.

Description

Self-closing ball valve

The self-closing spherical valve is a kind of of valve.

Valve is to be used for a kind of device of control flow rate or discharging on the pipeline of conveyance fluid.Existing various valve all is made up of the spool that has runner, valve body, operating mechanism, turnover pipe, and its common trait is that spool is connected with operating mechanism, and outer power realizes opening and closing.Mostly operating mechanism is to adopt the screw mandrel lifting, the open degree of the stroke size decision valve of spool.Its shortcoming is: (1) operation numerous, open, close and all want the turn screw mandrel.(2) use in the open in the field, metalwork gets rusty easily, the stagnant water effect variation, make disabled.(3) price is expensive.

Research purpose of the present utility model is, satisfies the needs of low-pressure delivery pipe, reduces materials consumption, reduces cost, and improves stagnant water effect.

For achieving the above object, the technological scheme of being taked is: the threeway and the valve of pipeline are integrated, the conical tube seal ring is adopted on top, is integrated spool with valve chamber, adopt the special preferably ball of runner, fill compression air or other medium in the ball,, depend on the needs as media such as water, utilize the pressure and the buoyancy of water in the pipeline, realize the keying of valve.For the higher pipeline of working pressure, adopt the screw mandrel assist device.

The utility model (as Fig. 1) is made up of valve body (3), seal ring (1), spherical valve core (2), supporting ring (5), fill hose joint (6), titting water outlet (4), the passage that discharges water (7), can be mounted to discharging valve, check valve, vent valve direct press type water feed apparatus, check valve direct press type water feed apparatus as required.Below with reference to accompanying drawing the utility model is further described.

One, makes discharging valve such as Fig. 1.This discharging valve has the function of outlet valve, safety valve simultaneously.At this moment, spool (2) is for the inflation ball, after current enter valve chamber by fill hose joint (6).Spool (2) moves under floating function, and air is extruded in the valve chamber, locates when spool moves to seal ring (1), and valve enters working state, and at this state, air still can be discharged in the pipeline.Open valve only needs with special-purpose depression bar or screw mandrel spool to be pushed away seal ring, and current can be emitted from passage (7), adjust spool stroke and can realize the flow adjustment that discharges water, and maximum opening is that spool is pushed into supporting ring (5).When having an accident or shut down and cause loine pressure sharply to raise, surpass the pipeline permissible working pressure, spool is produced automatically, and when big negative pressure was arranged in the pipeline, spool fell automatically, and air is entered, and eliminates negative pressure.The producing pressure and can realize of spool by adjusting the ball internal pressure.

Two, make check valve such as Fig. 2, install pipe joint (9) additional on the discharging valve top discharges water passage, the interior water-filling of spool (2) (or other neutral medium) makes the weight of ball and buoyancy approaching.When pipeline was started working, under water inlet pipe mouth (9) internal water pressure effect, spool (2) was pushed to supporting ring (5), and current pass through.Shutting down moment, spool (2) is displaced downwardly to seal ring (1) rapidly and locates under deadweight and the effect of reverse water pressure power, realizes check.

Three, make check valve direct press type water feed apparatus, as Fig. 3.Spool (2) is the inflation ball, and valve head tube joint (9) is connected with water pump, and under the water-aspirator pressure effect, spool (2) is pushed to supporting ring, and current directly are pressed into pipeline by valve chamber, to replace the function of water tower.When water pump quit work, spool (2) was located moving to seal ring (1) on rapidly under the effect of buoyancy and reverse water pressure power, realizes check.

Four, make vent valve direct press type water feed apparatus, as Fig. 4.Spool (2) is the inflation ball, fill hose joint (6) is connected with water pump, and when starting working, spool (2) leaves supporting ring (5) under floating function, on move to seal ring (1) and locate, valve and pipeline enter working state, if quit work, during aqueous reflux, spool (2) descends with the water surface, reduce to fill hose joint (6) when the water surface and locate, air enters water pump from top passageway (7), destroys " siphon " of water pump and realizes " check ".

The utility model compares with existing various Low pressure valves, and its advantage is:

1, simple in structure, easily manufactured, adopt concrete, metal, plastic or other material can a cast molding.

2, open and close saving of labor, laborsaving, reliable operation.Valve can close automatically or open automatically, and stagnant water effect is good, non-corroding.

3, multi-purpose valve, but the difference of the utility model Yian dress form, can play respectively discharge water, the effect of check, safety, exhaust, five kinds of valves of water inlet.

4, materials consumption is few, cost is low.Be used for low pressure pipeline and can adopt the concrete manufacturing, compare with other valve and can save investment 50～80%, particularly the utility model, replace water tower setting-out in low pressure pipeline, can save 80～90% construction investments as water feed apparatus.

Claims

1, a kind of self-closing spherical valve is made of spool, seal ring, threeway, valve body, it is characterized in that seal ring is that circular cone is tubular.

2, spool as claimed in claim 1 is characterized in that inflating or the elasticity ball of other neutral medium of filling, spool be equipped with fill, exhaust valve.