CN107763297A

CN107763297A - One kind solves automatic exhaust steam valve leak new method

Info

Publication number: CN107763297A
Application number: CN201610682623.0A
Authority: CN
Inventors: 王光第
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-08-18
Filing date: 2016-08-18
Publication date: 2018-03-06

Abstract

The present invention solves automatic exhaust steam valve leak new method to be a kind of.Automatic exhaust steam valve, it is one of important accessory in the water circulation systems such as heat supply, air-conditioning, cooling.It is made up of the basic part such as valve casing and ball float, lever, valve nozzle, valve element；Function is：Block water, be vented.Namely the gas in recirculated water is automatically drained out from pipe network system, but mustn't leak.The existing air bleeding valve of in the market can not be accomplished watertight.Reason is that ball float is the hollow ball formed using the two hemispheres butt welding of metal material.Slag inclusion, dry joint defect easily be present, ball float is met rising-heat contracting-cold, will ftractureed, and produces hole；Circulation instant water will be rushed in from crack, and ball float loss of buoyance declines, and band movable valve plug leaves valve nozzle and loses sealing process, and recirculated water is gushed because out of hand.To ensure heating, air-conditioning effect, leak is unable to again, design is a kind of with die casting or injection molding, and upper end closed simultaneously with connection ear, the open type floating drum of lower ending opening, substitutes the closed ball float of original welded type.

Description

One kind solves automatic exhaust steam valve leak new method

Technical field

Automatic exhaust steam valve, it is one of important accessory indispensable in the water circulation systems such as heat supply, air-conditioning, cooling.This is Because during the water-circulating pipe network operation such as heat supply, air-conditioning, for various reasons, constantly there are bubble coalescence, shape in recirculated water Into vapour lock, medium running resistance is added, or even causes local water circulation to stagnate.Heating is not warm, air-conditioning fails, boiler burns in vain, Do not reach heating, air-conditioning effect, cause greatly to waste.

So in order to eliminate the vapour lock of the circulatory system, ensure that system circulation is unimpeded, automatic exhaust steam valve must be just installed.

The function of automatic exhaust steam valve is：Block water exhaust.Namely the gas in recirculated water is arranged automatically from pipe network system Go out, but mustn't come fugitive water while exhaust.So functionally distinguishing, belong to energy-conserving product.

Technical background

Air bleeding valve on present domestic and international market, is essentially all mechanical.By valve casing and ball float, lever, valve nozzle, valve element Formed Deng basic part；Because specific gravity of gas is lighter than water, in water circulating pipe, water is walked downwards, and gas is then to move upwards. In order to effectively collect gas, to concentrate beyond discharge pipe network, so air bleeding valve is necessarily mounted at pipeline or heating equipment most Eminence.

Valve casing is closed, is only communicated by valve nozzle with air outside valve；And the open and close of valve nozzle, it is to be left by valve element Or block valve nozzle and realize；Valve element leaves or blocked action, is by ball float, lever drives again；And the elevating movement of ball float, It is then to be limited by water surface height in valve to change --- anhydrous in water circulating pipe during inoperative, ball float is fallen under Gravitative Loads The minimum point of valve, while valve nozzle is left by lever drives valve element, valve nozzle is in opening, is communicated in valve with the outer air of valve；

When heat supply or air-conditioning equipment are opened, heat (or cooling) water injects heat supply or pipes system under water pump pressurization.Pipe Original air is under the squeezing action of water in net, outside the exhaust valve nozzle dump valve being unlocked；When air is nearly drained in valve, follow Ring water enters in valve, and ball float is under the buoyancy of water, motion, while by lever drives valve element, most valve nozzle is thorough at last upwards Bottom is blocked, and makes thoroughly to separate inside and outside valve, normal circulation of the water under closed environment in guarantee system.

Due to various mechanical, physics etc. reason, constantly there is bubble production in the recirculated water in heat supply, pipes system It is raw, assemble into the air bleeding valve of highest point, force water level decreasing in air bleeding valve, ball float loss of buoyance, under Gravitative Loads also with Decline, while Valve cores are moved by lever band and leave valve nozzle, valve nozzle be in opening, and air is in the case where the pressure of water acts in valve Outside dump valve；Recirculated water also fills up rapidly after air discharge space in the valve vacateed, simultaneously while air in valve is extruded Ball float, lever drives valve core movement are promoted again, and valve nozzle is closed to ... such iterative cycles again, constantly excludes vapour lock, again It is water-tight, ensure water circulation pipe network normal operation and heating, air-conditioning effect.

Problem is, in the market considerable part air bleeding valve can not be accomplished watertight, and some even leaks are serious.According to correlation Department is introduced, almost the dozens or even hundreds of ton of neither one heating unit not dehydration daily；Except other pipe fitting valves, have quite Part is caused by air bleeding valve leak；And these water are not light waters, by handling, heating.Its cost is much Higher than several times of light water；Not only cause resource greatly to waste, raise heat supply, air-conditioning cost, and cause environmental pollution, very To bringing disaster to other property losses.

The reason for causing air bleeding valve leak has an each side reason such as structure, adjustment, but most serious, it is most be ball float cracking Caused by the harm of air bleeding valve failure it is maximum.

Due to existing exhaust valve float ball, the hollow ball formed using the two hemispheres butt welding of metal material.

When because who no absolute belief make welding quality reach absolutely.Often slag inclusion, the inspection of dry joint surface The defects of can not check, when heating network is run, because cold and hot temperature alternately changes, ball float also rising-heat contracting-cold therewith, continuous It in change, will be ftractureed at slag inclusion, dry joint, produce hole；

Second, heat supply, circulating for air conditioner water are to lean on water pump pressurizing urges.The biography that this pressure passes through recirculated water Pass, the surface pressure for acting on associated pipe network associated components is almost equivalent.That is, what the ball surface of ball float was born Pressure, also it is almost equal with being in the pipe network pressure together.Because ball float is hollow, internal pressure is no better than zero, with Surface pressure difference is because heat supply water pushing pressure is different, even more than ten times of several times of difference.Once ball float somewhat crackle or hole, Under huge pressure difference effect, circulation instant water will rush in ball float, and ball float declines because of water inlet loss of buoyance, driven therewith at random Valve element leaves valve nozzle and loses sealing process, and valve nozzle in opened condition, because out of hand gush by recirculated water.

Ensure heating, air-conditioning effect, be unable to leak again, most thorough reliable method, exactly improve ball float form and add Work method.

The content of the invention

The purpose of the present invention, exactly design it is a kind of be not required to welding processing, be not afraid of into water failure and the constant float of buoyancy, Thoroughly solve the above problems.

Brief description of the drawings

With reference to legend accompanying drawing is implemented, the present invention will be further described.

Fig. 1 is exhaust valve operation situation diagrammatic cross-section when ball float is normal；

Fig. 2 is ball float sinking after ball float rupture water inlet, is moved after valve element, leak schematic diagram after valve nozzle is opened；

Fig. 3 is float-type exhaust valve operation situation schematic diagram.

Fig. 4 is floating drum sectional structure chart；

Part in figure：

1, upper valve casing；2, valve element；3, valve nozzle；4, lever；5, ball float；6, lower valve casing；7, floating drum；8, floating drum is simplified；9, float Cylinder connection ear.

Embodiment

The object of the present invention is achieved like this：Design is a kind of by upper end closed, the cylinder of open at its lower end, connection ear group Into open type floating drum, substitute the closed ball float of original welded type.

Its principle is such：

1, because of floating drum upper end closed, Open Side Down, is hollow, and the inside is full of air, and proportion is less than the water of same volume, with Same volume ball float has identical buoyancy.

2, due to the characteristic of water, being both less than his material to proportion has buoyancy, and has blocking, closing to make to air With.When air bleeding valve is in off working state, spacious anhydrous in valve, floating drum sinks to bottom under Gravitative Loads, passes through lever drives Valve nozzle, valve nozzle are in opening without cover bar to valve core rearward out, are communicated in air bleeding valve with ambient atmosphere；When heating or air-conditioning start Water is sent, as water level is gradually increasing from bottom to top, air extrusion in pipe network is pushed into peak, is arranged by the valve nozzle that open Go out outside valve, until being emptied completely；Water enters in valve immediately, and by floating drum closure of openings, air can not escape in floating drum；Floating drum is in water Buoyancy under upwards, valve nozzle is closed by lever drives valve element, makes with extraneous to separate in valve, pipe network is under air-tight state Normal operation.

3, because floating drum is open state, so the inside and outside pressure born of floating drum is identical, without pressure differential；Again plus Floating drum can integral die-cast or injection molding, without welding, thoroughly overcoming ball float may intake the problem of failing because of crack.

If floating drum water inlet failure, possible condition only has one, exactly when floating drum is tilted more than more than 60 degree, in cylinder Air is only possible to escape in succession, is thoroughly intake completely when tilting to 90 degree.Problem is that the external diameter of floating drum is slightly less than the interior of air bleeding valve Footpath, floating drum can only move up and down under the limitation of air bleeding valve internal diameter, it is impossible to tilt to beyond safe gradient.

Claims

1. one kind solves air bleeding valve leak new method, it is characterised in that：With upper end closed and with connection ear, the bucket of open at its lower end Type keg float, the sealed ball float welded instead of existing two halves ball-type.

2. a kind of solution air bleeding valve leak new method according to claim 1, is further characterized in that：Floating drum die casting or note Machine-shaping is moulded, without welding processing.