CN201651537U

CN201651537U - Exhaust ball valve

Info

Publication number: CN201651537U
Application number: CN2010201413530U
Authority: CN
Inventors: 董服义
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-25
Filing date: 2010-03-25
Publication date: 2010-11-24
Anticipated expiration: 2020-03-25

Abstract

The utility model relates to exhaust valve manufacturing technology, in particular to an exhaust ball valve with convenient maintenance. The exhaust ball valve comprises a valve body, a valve core and a float mechanism positioned between the valve body and the valve cover. One end of the valve body is in threaded connection with the valve cover, while the other end thereof is provided with a connector connected with a pipeline. The exhaust ball valve is characterized in that the middle part of the valve body is provided with a ball valve. The utility model leads the ball valve into the conventional exhaust valve and can guarantee that a system is sealed in the overhauling process so as to prevent fluid from outflowing.

Description

Venting ball valve

Technical field

The utility model relates to a kind of outlet valve manufacturing technology, particularly a kind of venting ball valve of convenient maintenance.

Background technique

HVAC system and heating ventilation air-conditioning system are in running, and numerous harmful effect meetings that the gas (as hydrogen, oxygen etc.) that water discharges when heating brings damage system and reduce thermal effect, and these gases can produce a lot of adverse consequencess as can not in time draining.Such as: the corrosion that causes by oxidation; The formation of airbag in the radiator; The not smooth imbalance of hot water circuit makes some radiator part not hot; Noise during pipeline band fate row; The empty phenomenon in the whirlpool of recycle pump.

Therefore, outlet valve is a requisite auxiliary element in the pipe-line system, is widely used in boiler, petroleum gas, the water supply and sewerage pipeline.Often be installed in commanding height or elbow etc. and locate, get rid of unnecessary gas in the pipeline, improve pipeline road utilization efficiency and cut down the consumption of energy.

The operating principle of tradition outlet valve is: when beginning water filling in the pipe, chock plug rests on the enable possition, carry out a large amount of exhausts, when air has been arranged, ponding in the valve, ball float is floated, and the transmission chock plug is to closed position, stop a large amount of exhausts, when water is normally carried in the pipe, in valve, arrive certain degree, drawdown in the valve if any a small amount of air accumulation, ball float descends thereupon, this moment, air was discharged by aperture, and when producing negative pressure when in-pipe flow is empty or in the chance pipe, this moment, chock plug was opened rapidly, suck air, guarantee that pipeline is complete.

Chinese patent literature CN2549270Y discloses a kind of heating that is used for, the outlet valve of heating equipment, comprise a upper end open, the cup-shaped valve body that the lower end is porose, valve gap and valve body are by being threaded, between valve gap and valve body, there is one by spring seat, spring bracket, float, torsion spring, the switch that relief opening is formed, steam-expelling port aperture on the control spring seat, inside and outside the bottom of valve body has one the silk with valve body by being threaded, in the inside of inside and outside silk by a check valve of forming by spring and admission mouth, it is characterized in that, a cup-shaped filter screen is arranged in valve body, its upper end open place connects a flange circle, this flange circle is sandwiched between spring seat and the valve body upper-end surface, by spring seat, spring bracket, float, torsion spring, the switch that relief opening is formed is positioned at filter screen.This outlet valve can filter out the solid particle in the water, has guaranteed the outlet valve reliable operation, has prolonged working life.

Chinese patent literature CN201260695Y discloses a kind of outlet valve, comprise valve seat, valve gap and ball float, be provided with support in the valve seat, have the positioning hole that cooperates with ball float bottom directional post on the support, the guide sleeve that cooperates with ball float top guide post is equipped with at the valve gap top, the guide sleeve top has and the extraneous big exhaust port that communicates, and seal ring is housed, gapped formation exhaust passage between ball float top guide post and the guide sleeve on the top of ball float top guide post and exhaust port cooperates greatly the sealing surface.Its advantage is to have saved valve body, and part is few, simple in structure, and the volume of assembling back finished product is little, in light weight, and possesses and arrange air-breathing function fast, in a large number, has effectively saved cost.

But traditional outlet valve need be pulled down outlet valve when maintenance, and can not guarantee the airtight of system this moment, and tube fluid may outflow.

Summary of the invention

Goal of the invention of the present utility model provides a kind of outlet valve of convenient maintenance, and ball valve is introduced in traditional outlet valve, can guarantee the airtight of system when maintenance, prevents the fluid outflow.

Concrete technological scheme of the present utility model is:

Venting ball valve comprises valve body, valve gap, the float mechanism between valve body and valve gap, and valve body one end is threaded with valve gap, and the other end is provided with the connecting head of connecting tube, it is characterized in that the valve body middle part of described venting ball valve is provided with a ball valve.

Float mechanism forms by being loaded on the air discharge cook that cooperates with float in float in the valve cavity and the valve gap, and this air discharge cook is made up of chock plug, fly rod and the spring that connects chock plug and fly rod.

Valve body attachment is provided with filter screen.

Described ball valve and valve body are one-body molded.

The utility model action principle is to introduce the isolating valve structure in outlet valve, particularly select for use and the one-body molded comparatively easy ball valve of former outlet valve, have advantages such as simple in structure, that switch is rapid, in concrete the application, also can be transformed to other forms of isolating valves such as stop valve as required.

The utility model valve body attachment can outside thread be set as required or internal thread is connected with pipeline; Connecting head filter screen form can be the check valve of being made up of spring and air inlet head.

Description of drawings

Fig. 1 is the utility model venting ball valve sectional structure schematic representation

Among the figure: valve body 10, cavity 11, connecting head 12, filter screen 13, seal ring 14, spring 15, air inlet 16, valve gap 20, fly rod 31, spring 32, float 33, chock plug 34, nut 35, seal rubber pad 36, through hole 37, positioning rod 38, ball valve 40.

Embodiment

Below in conjunction with accompanying drawing technical solutions of the utility model are done concrete elaboration.

As shown in Figure 1, venting ball valve comprises valve body 10, valve gap 20, the float mechanism between valve body 10 and valve gap 20, valve body 10 1 ends are threaded with valve gap 20, and the other end is provided with the connecting head 12 of connecting tube, and valve body 10 middle parts of described venting ball valve are provided with a ball valve 40.

Float mechanism is made up of the float 33 and the valve gap 20 interior air discharge cooks that cooperate with float 33 that are loaded in valve body 10 cavitys 11, this air discharge cook is made up of the spring 32 of chock plug 34, fly rod 31 and connection chock plug 34 and fly rod 31, float 33 bottoms are provided with positioning rod 38, are provided with seal rubber pad 36 between fly rod 31 and the chock plug 34.

The sidepiece of valve gap 20 has the worker hole that chock plug 34 is installed, and is furnished with nut 35 accordingly, and the sidepiece of nut 35 has through hole 37.In the using process nut 35 is unscrewed at ordinary times, made and channel connection in through hole 37 and the chock plug 34 play the effect of exhaust; Tightening nuts 35 can play airtight effect.

Valve body 10 connecting heads 12 comprise air inlet 16 and spring 15, and air inlet 16 is provided with filter screen 13 and seal ring 14.

The utility model is not limited to above-mentioned mode of execution, and the technological scheme that has increased ball valve in traditional exhaust structure all should be thought and falls into protection domain of the present utility model.

Claims

1. venting ball valve comprises valve body, valve gap, the float mechanism between valve body and valve gap, and valve body one end is threaded with valve gap, and the other end is provided with the connecting head of connecting tube, it is characterized in that the valve body middle part of described venting ball valve is provided with a ball valve.

2. venting ball valve according to claim 1 is characterized in that described float mechanism forms by being loaded on the air discharge cook that cooperates with float in float in the valve body cavity and the valve gap, and this air discharge cook is made up of chock plug, fly rod and the spring that connects chock plug and fly rod.

3. venting ball valve according to claim 1 is characterized in that being provided with in the valve body attachment filter screen.

4. venting ball valve according to claim 1 is characterized in that described ball valve and valve body are one-body molded.