CN202158201U

CN202158201U - Buffering exhaust valve

Info

Publication number: CN202158201U
Application number: CN2011202624590U
Authority: CN
Inventors: 甄宇宏
Original assignee: ANHUI TONGDU VALVE Co Ltd
Current assignee: Anhui Tongdu Flow Technology Co., Ltd.
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2012-03-07
Anticipated expiration: 2021-07-22

Abstract

The utility model discloses a buffering exhaust valve for use in a water conveying pipeline, which comprises a valve body and a valve cover disposed on the valve body; the bottom of the valve body is provided with an air inlet; the valve cover is provided with a main exhaust hole; a floating ball is disposed in a valve cavity; a buffering valve clack capable of closing or opening the man exhaust hole by lifting is disposed on the floating ball in the valve cavity; the buffering valve clack has an upper end surface and a lower end surface; the upper end surface is provided with a sealing surface matched with the main exhaust hole; a gap for air stream to pass through is disposed between the side wall of the buffering valve clack and the inner wall of the valve body; and the buffering valve clack is provided with a second exhaust hole which is communicated with the upper end surface and the lower end surface and can be closed when the floating ball floats up. The buffering valve clack is provided with a small aperture second exhaust hole, large quantities of air generated at a moment of startup are discharged from the main exhaust hole and the second exhaust hole will not be blocked by the floating ball due to delayed action of the buffering valve clack, so that the buffering exhaust valve has good safety.

Description

Buffering exhaust valve

Technical field

The utility model relates to a kind of air inlet and exhaust valve that is used for the conveyance fluid medium, especially for the exhaust in the waterline, admission air valve.

Background technique

Outlet valve is the indispensable key equipment of waterline, is installed in the height point place of aqueduct, during transporting water, gets rid of the gas in the blank pipe; Pipeline internal cause aqueous reflux during termination of pumping and when negative pressure occurring, suck gas and equalizing main pressure.Usually outlet valve adopts ball float as executive component, because air-flow velocity is fast, ball float is stuck in easily and forms the stifled phenomenon of gas on the relief opening, directly has influence on the safety of waterline when starting mode of pump.

Summary of the invention

The purpose of the utility model provides a kind of buffering exhaust valve, can buffer gas flow during exhaust, be difficult for jam, and can ensure waterline safety.

The utility model is achieved in that it comprises valve body and the valve gap that places the valve body top; The valve body bottom is provided with suction port; Valve gap is provided with main vent, is provided with ball float in the valve pocket, and the inherent ball float of valve pocket top is provided with the buffering flap that can close or open main vent through up-down; The buffering flap has upper and lower two end faces; The upper-end surface is provided with the sealing surface that cooperates with main vent, the gap that has air feed stream to pass through between buffering flap sidewall and the valve interior wall, and having on the buffering flap can be with second relief opening of its sealing when linking up upper and lower end face and ball float come-up.When starting mode of pump, the water pump high speed operation, a large amount of gases are discharged by main vent through the gap between buffering flap and the valve body fast.Owing to produce pressure reduction at buffering flap upper and lower surface when air stream is crossed the buffering flap, when the air velocity quickening, when pressure reduction surpasses the air closing pressure; The buffering flap is blown afloat, upwards lifting and seal main vent, simultaneously; Air continues to discharge through second relief opening on the buffering flap, and after a large amount of air were discharged, liquid level raise; Buoyancy rises ball float and closes second relief opening, makes outlet valve be closed.When termination of pumping, aqueous reflux makes instantaneous generation vacuum in the pipeline, at this moment, the ball float in the outlet valve and buffering flap under the effect of own wt, landing rapidly, quick, a large amount of suction gas of outlet valve simultaneously, equalizing main pressure.Because the buffering flap upwards seals main vent a process is arranged, a large amount of gases are discharged by main vent, thereby the bore of second relief opening can be provided with lessly, thereby ball float can not block and get lodged on second relief opening, can prevent effectively that the stifled phenomenon of gas from taking place.

Cushion flap for ease and go up and down, buffering flap upper end is provided with the vertically-guided bar, and valve gap is provided with the guide sleeve that cooperates with guide rod and be connected with valve gap through connecting tendon above main vent.

Guide rod is arranged on buffering flap neutral position, has the exhaust passage that communicates with second relief opening in the middle of the guide rod.

In order to reduce the ball float operating frequency, the utility model also comprises a miniature outlet valve, and the suction port of this miniature outlet valve communicates with valve pocket, and the height of suction port is located at second relief opening top when buffering flap sealing main vent.The gas that produces in the water delivery process; Often rise successively and go forward side by side in the micro-outlet valve with the form of bubble; When air rose to certain pressure, miniature outlet valve was opened discharge gas, and closed rapidly; And the ball float in the valve pocket need not do the exhaust action, thereby can prolong the working life of ball float.

Be provided with the solid float of being processed by rubber material in the valve pocket of said miniature outlet valve, the float upper end is useful on the end face of the miniature outlet valve relief opening of sealing.The float of this structure is not fragile, long service life.

The utility model is through being provided with the buffering flap between main vent and ball float; And on the buffering flap, small aperture second relief opening that cooperates with ball float is set; Because the hysteresis of buffering flap; A large amount of air of start moment generation are discharged by main vent, and ball float can not block stifled second relief opening, and Safety performance is good.Through setting up miniature outlet valve, can prolong the working life of ball float in addition.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is a kind of working state figure of the utility model;

Fig. 3 is the another kind of working state figure of the utility model.

Embodiment

As shown in Figure 1; The utility model buffering exhaust valve comprises valve body 1, places valve gap 3, ball float 2 and the miniature outlet valve 5 of valve body top; Valve body 1 bottom is provided with suction port 11; Valve gap 3 is provided with main vent 31, and valve gap 3 is through being bolted to valve body 1 top, and ball float 2 is placed in the valve pocket 13; Valve body 1 inwall is provided with the guiding rib 12 that 2 up-downs are led to ball float to valve pocket 13 convexities; Valve pocket 13 inherent ball floats 2 tops are provided with the buffering flap 4 that can close or open main vent 31 through up-down, and buffering flap 4 has upper and lower two end faces 44,43, and upper-end surface 44 is provided with the sealing surface that cooperates with main vent 31; Valve gap 3 is fixed with the rubber valve seat 32 that cooperates with the sealing surface that cushions flap 4 upper-end surfaces 44 around main vent 31; The gap 14 that has air feed stream to pass through between buffering flap 4 sidewalls and valve body 1 inwall, having in the middle of the buffering flap 4 can be with second relief opening 41 of its sealing when linking up upper and lower two end faces 44,43 and ball float 2 come-ups, and buffering flap 4 lower end surfaces 43 are fixed with the rubber valve seat 42 that cooperates with ball float 2 around second relief opening 41.Buffering neutral position, flap 4 upper end is fixed with vertically-guided bar 45; Valve gap 3 is provided with the guide sleeve 33 that cooperates with guide rod 45 and be connected with valve gap 3 through connecting tendon 34 above main vent 31; Guide rod 45 upper end outer walls are provided with spacing preiection 46; To cushion flap 4 through protruding 46 and be suspended in the valve pocket 13, have the exhaust passage 47 that communicates with second relief opening 41 in the middle of the guide rod 45.

Miniature outlet valve 5 is located at valve gap 3 upper end main vents 31 1 sides, and the suction port 51 of miniature outlet valve communicates with valve pocket 13, and the height of suction port 51 is located at second relief opening, 41 tops when buffering flap 4 sealing main vents 31.The relief opening 54 of miniature outlet valve 5 is located on the valve gap 55 that is fixed on valve pocket 53 upper ends through being threaded, and is provided with the solid float of being processed by rubber material 52 in the valve pocket 53, and float 52 upper ends are useful on the end face of the miniature outlet valve relief opening 54 of sealing.

Above main vent 31, be provided with dust-proof cover 6, dust-proof cover 6 is fixed on the valve gap 3, and dust-proof cover 6 has lateral row gas port 61, and lateral row gas port 61 outsides are provided with Air Filter 62, and the cover body 63 that extends to miniature outlet valve 5 tops is arranged at dust-proof cover 6 tops.

Its working principle is following: when starting mode of pump, a large amount of gases are discharged by main vent 31 through the gap 13 between buffering flap 4 and the valve body 1 along the direction of arrow among Fig. 1 fast.Owing to produce pressure reduction at buffering flap upper and lower surface when air stream is crossed the buffering flap, when pressure reduction surpassed the air closing pressure, buffering flap 4 was blown afloat; Upwards lifting and seal main vent 31, as shown in Figure 2, this moment, air continued to discharge through second relief opening 41 on the buffering flap 4; After a large amount of air were discharged, liquid level raise, and buoyancy rises ball float 2 and closes second relief opening 41; Make outlet valve be closed, as shown in Figure 3.The gas that produces in the water delivery process rises successively with the form of bubble and gets in the valve pocket 53 of micro-outlet valve 5 through suction port 51; When air rises to certain pressure; Miniature outlet valve 5 is opened discharge gas and is closed rapidly; The float 52 of miniature outlet valve 5 is in the closed position among Fig. 3, and float 52 upper-end surfaces are with relief opening 54 sealings.When termination of pumping, aqueous reflux makes instantaneous generation vacuum in the pipeline, the ball float 2 in the outlet valve and buffering flap 4 under the effect of own wt, landing rapidly, outlet valve is through quick, a large amount of suction gas of main vent 31, equalizing main pressure simultaneously.

Claims

1. buffering exhaust valve; Comprise valve body (1) and place the valve gap (3) of valve body top; Valve body (1) bottom is provided with suction port (11); Valve gap (3) is provided with main vent (31), is provided with ball float (2) in the valve pocket (13), it is characterized in that: the inherent ball float of valve pocket (13) (2) top is provided with the buffering flap (4) that can close or open main vent (31) through up-down; Buffering flap (4) has upper and lower two end faces (44,43); Upper-end surface (44) is provided with the sealing surface that cooperates with main vent (31), the gap (14) that has air feed stream to pass through between buffering flap (4) sidewall and valve body (1) inwall, and having on the buffering flap (4) can be with second relief opening (41) of its sealing when linking up upper and lower end face (44,43) and ball float (2) come-up.

2. buffering exhaust valve according to claim 1; It is characterized in that: buffering flap (4) upper end is provided with vertically-guided bar (45), and valve gap (3) is provided with in main vent (31) top and guide rod (45) cooperation and the guide sleeve (33) that is connected with valve gap (3) through connecting tendon (34).

3. buffering exhaust valve according to claim 2 is characterized in that: guide rod (45) is arranged on buffering flap (4) neutral position, has the exhaust passage (47) that communicates with second relief opening (41) in the middle of the guide rod (45).

4. according to claim 1 or 2 or 3 described buffering exhaust valves; It is characterized in that: further comprising a miniature outlet valve (5); The suction port of this miniature outlet valve (51) communicates with valve pocket (13), and the height of suction port (51) is located at second relief opening (41) top when buffering flap (4) sealing main vent (31).

5. buffering exhaust valve according to claim 4 is characterized in that: be provided with the solid float of being processed by rubber material (52) in the valve pocket of said miniature outlet valve (53), float (52) upper end is useful on the end face of the miniature outlet valve relief opening of sealing (54).