CN201344160Y - Three-way reversing valve - Google Patents

Abstract

The utility model discloses a three-way reversing valve which comprises a main valve body, a valve plate, a valve seat and pneumatic drivers and further comprises a stub pipe and a flange communicated with the valve body, wherein the main valve body of the reversing valve has three cavities, namely two independent cavities and a shared cavity, and the two pneumatic drivers control the opening and the closing operations of a shaft and the valve plate respectively, thereby achieving the reversing purpose. The three-way reversing valve with a reasonable and compact structure can not only meet the reversing requirement but also reduce the height and the size of the valve body, and has the advantages of large caliber, light weight, small power consumption, low manufacturing cost and the like.

Description

Three-way diverter valve

Technical field

The utility model relates to the mechanism that metallurgy industry is used for the gas commutation, particularly provides a kind of wide tee selector valve.

Background technique

At present, selector valve has been widely used in the metallurgy industry recuperative heater.This selector valve is owing to stove form difference, and these valve usability differences, its structural type also have nothing in common with each other.When using large-scale selector valve, be called system and concentrate commutation, and when using small-sized four-way valve or small-sized two position three-way valve, then be called system and disperse commutation.

Large-scale full-function partition type three-way diverter valve is applicable to the concentrated commutation of a plurality of burners of section.

Recuperative heater develops for many years in China, but in use still there are many deficiencies in domestic all types of industries stove selector valve.Such as:

Bulky: large-scale two position and four-way reversing valves are adopted in concentrated commutation mostly, owing to be that its stroke is longer with parallel the moving of cylinder promotion valve plate, institute takes up space also bigger.The valve arrangement quality is bigger because that equipment requires valve plate is high, so valve plate thickness is big, thus vertical selector valve cause promote or the cylinder bore and the stroke of mobile valve valve plate bigger, cause naturally processing difficulties, power consumption greatly, device fabrication cost height.

Commutation has moment collaborates: the valve plate of past two position four-way valve selector valve and two-bit triplet selector valve is not to open the position, be exactly at off-position, suction port and air outlet always have one to open, but suction port and air outlet are all to lead to during the valve plate action, and coal gas of coming in and flue gas are just collaborated mutually easily.

Therefore, need further improve, so that satisfy requirement of engineering better to selector valve.

The model utility content

The purpose of this utility model has been to overcome the defective of existing three-way diverter valve, provides a kind of and can satisfy the commutation requirement, have again that relative volume is less, commutation rapidly, good seal performance, three-way diverter valve that the cost cost is low.

To achieve these goals, the technical solution adopted in the utility model is:

A kind of three-way diverter valve, it includes valve body, wherein: be provided with first chamber, second chamber and shared chamber in this valve body, this first chamber, second chamber are arranged side by side in top, shared chamber, this first chamber, top, second chamber are respectively arranged with first drive unit and second drive unit, be respectively arranged with dividing plate between this first chamber, second chamber and the shared chamber, be respectively arranged with first valve seat and second valve seat on this dividing plate; Wherein:

This first drive unit and second drive unit are connected with first valve rod and second valve rod respectively, all are fixed with first valve plate and second valve plate that match with first valve seat and second valve seat on this first valve rod and second valve rod.

This first valve seat and second valve seat are provided with the stem guiding ring.

The valve plate that connects with pin links to each other with this drive unit by axle.

Wherein, described valve body panel is provided with bearing, is provided with the support stuffing box in the valve body, and the space between bearing and the support is enough to make the live axle reciprocating action that has pin, and can keep in repair drive unit under the sealed condition of axle.Carry out maintenance operation in the time of promptly can realizing having coal gas in the pipeline, described drive unit is that electrical equipment is controlled automatically, is related domain equipment commonly used.

The effect of three-way diverter valve described in the utility model is: three-way diverter valve described in the utility model as required the time open and close separately valve plate, also can close simultaneously moment, thereby avoided the shortcoming of collaborating originally and refluxing.

Description of drawings

Fig. 1 is the utility model embodiment three-way diverter valve master TV structure schematic representation;

Fig. 2 is the utility model embodiment three-way diverter valve left side TV structure schematic representation.

Embodiment

As shown in Figure 1 and Figure 2, the described three-way diverter valve of model utility embodiment; It includes valve body 1, be provided with first chamber 5, second chamber 9 and shared chamber 13 in this valve body 1, this first chamber 2, second chamber 9 are arranged side by side in 13 tops, shared chamber, this first chamber 5,9 tops, second chamber are respectively arranged with first drive unit 2 and second drive unit 3, are respectively arranged with valve seat 10 between this first chamber 5, second chamber 9 and the shared chamber 13; Wherein:

This first drive unit 2 and second drive unit 3 are connected with first valve rod 4 and by axle 11 respectively

Two valve rods 8 all are fixed with valve plate 6 and the valve plate 7 that matches with valve seat 10 on this first valve rod 4 and second valve rod 8.

This three-way diverter valve action specification:

Full-function partition type Pneumatic three-way change valve 1 is made up of three cavitys, in two valve bodies in top a valve plate 6 is arranged respectively, when two five-way electromagnetic valve dead electricity of second chamber, 9 upper cylinder, the air inlet of cylinder pressurized air, cylinder column is in retracted state, valve plate 8 is positioned at top, shows that near the switch red light second chamber 9 is connected with shared chamber 13 outside the cylinder block upper end portion.

At this moment two five-way electromagnetic valves of first chamber, 5 upper cylinder get, cylinder pressurized air is by another mouthful air inlet, cylinder column then is in the state of stretching out, valve plate 6 is positioned at lower valve seat seal ring 12 places, what the cylinder block end was outer shows near switch bottom red light, first chamber 5 and shared chamber 13 sealed partitions.

Such two solenoid valves repeatedly electric, dead electricity, then two valve plates of cylinder and valve move up and down, thereby realize the commutation purpose of air inlet-smoke evacuation.

The valve plate of past two-position three-way valve selector valve is not to open the position, be exactly at off-position, suction port and air outlet always have one to lead to, but suction port and air outlet are all to lead to during the valve plate action, coal gas of coming in and flue gas are just collaborated mutually, the utility model selector valve has two pneumatic actuating devices, two mouths instantaneous closing simultaneously can occur by the automatic control of electrical equipment, has so just avoided collaborating mutually of different air-flows.

This in addition full-function cut-off type selector valve has also been established Equipment Foundations for pulse-combustion, and this selector valve volume is approximately little by 1/3rd, weight want light half.

The above only is preferred embodiment of the present utility model; be not to limit to the utility model with this; therefore; all all and the utility model structure, device, feature etc. are approximate, identical; be allly to replace and modify etc. according to the utility model patent claim being equal to of doing, all should still belong within the scope of patent application protection of the present utility model.

Claims (2)

1, a kind of three-way diverter valve, it includes valve body, it is characterized in that: be provided with first chamber, second chamber and shared chamber in this valve body, this first chamber, second chamber are arranged side by side in top, shared chamber, this first chamber, top, second chamber are respectively arranged with first drive unit and second drive unit, be respectively arranged with dividing plate between this first chamber, second chamber and the shared chamber, be respectively arranged with first valve seat and second valve seat on this dividing plate; Wherein:

This first drive unit and second drive unit are connected with first valve rod and second valve rod respectively, all are fixed with first valve plate and second valve plate that match with first valve seat and second valve seat on this first valve rod and second valve rod.

2, three-way diverter valve as claimed in claim 1 is characterized in that: this first valve seat and second valve seat are provided with the stem guiding ring.

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