A kind of composite exhaust valve with buffer unit
Technical field
The present invention relates to sewage exhaust valve always, especially relate to a kind of composite exhaust valve with buffer unit.
Background technology
In sewage drainage pipeline, owing to there is a large amount of gas and normal during water delivery in sending water draining initial stage pipe
Send the oligodynamical gas in water, the sewage composite exhaust valve being arranged on pipeline need to be used to carry out a large amount of aerofluxus and trace row
Gas, improves and send water or drainage efficiency, but often in a large amount of exhaust process of sewage composite exhaust valve and closing process, can produce
Sewage in a large amount of moment ejection pipelines and the moment water hammer of closing process, fragile valve member and pipeline accessories, Qing Zhezao
Becoming environmental pollution, severe one produces potential safety hazard.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and a kind of buffering blowdown, safety are provided
The composite exhaust valve with buffer unit of water hammer-resistant, bilge water resisting ejection.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of composite exhaust valve with buffer unit, including valve body, is arranged on valve body top and connects with valve seal
The valve gap connect, described valve body, in calabash shaped, is divided into aerofluxus cavity and lower buffering cavity, sets in described upper discharge chamber body
Have ball float exhaust apparatus, in described lower cushion chamber body, be provided with ball float buffer unit, the sidewall of described valve body offers with
The outlet of upper aerofluxus cavity connection, described lower buffering cavity bottom is provided with water inlet, and described valve gap is provided with air vent,
Described air vent is provided with hood.
Described ball float exhaust apparatus includes that main ball float, piston, piston shelf and guide rod, described piston shelf are fixed on valve gap
Bottom, described main ball float is connected with piston tail by main ball lever, and described guide rod is through the arc-shaped head of piston
Being connected with main ball lever, the other end and the guide pin bushing being arranged on hood bottom are slidably connected.
It is additionally provided with sealing ring between described piston shelf and valve gap.
It is additionally provided with limiting plate between described piston shelf and sealing ring.
Described ball float buffer unit includes buffering ball float and sliding axle, and described sliding axle upper end is fixed on discharge chamber
Body is with on the upper bracket of lower buffering cavity connectivity part, and lower end is fixed on the lower carriage being arranged on water inlet by plug screw, institute
The buffering ball float stated is set on sliding axle, and is slidably connected with sliding axle.
Described ball float buffer unit also includes the bumper bracket being fixed on sliding axle, and described buffering ball float is at bumper bracket
And slide up and down between upper bracket.
The described external diameter of buffering ball float matches with the internal diameter of upper aerofluxus cavity with lower buffering cavity connectivity part.
The outer rim of described buffering ball float and lower buffering cavity inner wall matching form, form throttling circular passage.
Described outlet is connected by joint and a ball valve.
Compared with prior art, the invention have the advantages that
The present invention arranges buffer unit in import, in a large amount of aerofluxuss the most again except have a conventional composite formula air bleeding valve
Time, buffering ball float is failure to actuate, and makes a large amount of aerofluxus normal, and when a large amount of water impact, buffering ball float is under current and buoyancy
Floating, buoyancy aid cylindrical forms restrictor ring shape passage with valve body inner circle, makes the current of entrance main valve force throttling (throttle rate 10-
15%), it is ensured that composite exhaust valve a large amount of aerofluxuss when aerofluxus do not reduce capacity simultaneously, prevent vomiting simultaneously of sewage
Slow down slowly starting and the Slow Close of piston of main ball float, prevent water hammer from producing, there is safety and protection environment is contaminated double
Weight function.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the present invention;
Fig. 2 is the present invention fundamental diagram at a large amount of exhaust sections;Fig. 3 is the present invention operation principle at throttling exhaust section
Figure;Fig. 4 is the present invention fundamental diagram at trace exhaust section;Fig. 5 is the present invention fundamental diagram in a large amount of inspiratory limb.
Wherein, 1, valve body, 2, valve gap, 3, hood, 4, guide pin bushing, 5, sealing ring, 6, limiting plate, 7, piston shelf, 8, piston,
9, main ball float, 10, ball float buffer unit, 11, ball valve, 101, buffering ball float, 102, bumper bracket, 103, sliding axle, 104, lower
Frame, 105, plug screw.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment:
As it is shown in figure 1, this air bleeding valve includes valve body 1, valve gap 2, hood 3, guide pin bushing 4, sealing ring 5, limiting plate 6, piston
Frame 7, piston 8, main ball float 9, ball float buffer unit 10, ball valve 11;Ball float buffer unit 10 comprises buffering ball float 101, bumper bracket
102, sliding axle 103, lower carriage 104, plug screw 105;Valve body 1 is connected built with main ball float 9 and with the sealing ring 5 on valve gap 2, lives
Plug 8 forms seal under the hydro powered of main ball float 9;Run on valve gap 2 gas hood 3, under connect piston shelf 7 and be bolted to
On valve body 1;Hood 3 is threadedly connected on valve gap 2, for a large amount of aerofluxuss and the structure of air-breathing;Guide pin bushing 4 is used for as piston 8
Vertical movement guides and is fixed on valve gap 2;Sealing ring 5 is fixed between valve gap 2 and piston shelf 7 for primary seal;Spacing
Plate 6, for controlling the sealed vol of piston 8, should reach seal request, the most excessive service life affecting rubber seal ring 5;
Be screwed in valve gap 2 on piston shelf 7, limiting piston, under be used for guiding main ball lever 9;Piston 8 be limited in limiting plate 6 with
Between piston shelf 7 and follow the vertical movement up and down of main ball float 9;Main ball float 9 is sagging on drive piston 8 work under hydro powered
Straight motion;Bumper bracket 102 is screwed on sliding axle 103 lower limit for limiting buffering ball float 101;Buffering ball float
101 slide up and down with fluid for being placed on sliding axle 103, reach the effect opening and closing, throttling, buffer;Sliding axle 103 uses plug screw
105 are fixed between valve body 1 and lower carriage 104, sliding axle 103 are cased with buffer ball float 101 and bumper bracket 102;Lower carriage 104
It is screwed on valve body 1, for positioning the circumferential position of sliding axle 103;Plug screw 105 is twisted on lower carriage 104, fixing sliding
Moving axis 103 upper-lower position;Ball valve 11 is fixed on valve body 1 by joint, for getting rid of the sewage in valve body 1;Sewage combined type
Air bleeding valve is suitable to be installed at pump outlet or in delivery water pipeline, in order to get rid of a large amount of air assembled in pipeline, simultaneously
The micro-air that pipeline higher position is assembled is emitted in air, to improve pipeline and water pump service efficiency, and in pipe once
When having negative pressure to produce, this valve can immediately wick into outside air, it is to avoid pipeline causes the generation of tube breaking phenomenon because of negative pressure.Work as water delivery
When starting water filling in pipe, piston 8 or buffering ball float 10.1 rest on open position, carry out a large amount of aerofluxus.When air is drained, valve
Internal water accumulation, ball float is floated, piston 8 or buffering ball float 101 to closed position, stops a large amount of aerofluxus.When in pipe, water normally carries
Time, in valve, arriving certain degree, water level decreasing in valve if any a small amount of air accumulation, two ball floats decline therewith, now a small amount of air
Discharged by hollow bar steam vent.When water pump stops, during in-pipe flow sky or when producing negative pressure in chance pipe, piston 8 is opened rapidly, inhales
Entering air, it is ensured that pipeline safety, when decreasing a large amount of aerofluxus, sewage ejection, makes dirt be unlikely to be deposited on piston seal face,
And internals it are hardly damaged more resistant to water slug, make degassing function normal operation.When air bleeding valve has negative pressure to produce in pipe, piston should
This can be opened rapidly, sucks outside air in a large number, to ensure that pipeline will not produce infringement because of negative pressure.For high flow rate, frequently
The operating mode of numerous startup water pump, for slowing down water impact, buffering plug valve should be possible to prevent to spray water in a large number but not affect a large amount of aerofluxus, makes
Emptying effectiveness is unaffected, and effectively prevents water hammer from occurring.
As in figure 2 it is shown, the duty of a large amount of exhaust sections is:
Operation principle is:
Water-carriage system starts water filling aerofluxus, because buffering ball float and piston are failure to actuate without hydro powered, so low voltage difference is unobstructed
A large amount of aerofluxuss.
As it is shown on figure 3, the duty of throttling exhaust section is:
Element |
Position |
Action |
State |
Piston: |
Nearly sealing station |
Upwards sliding |
Throttling aerofluxus |
Buffering ball float |
Nearly throttle position |
Upwards sliding |
Throttling exhaust outlet water hammer-resistant |
Operation principle is:
Air is the most drained, gradually water filling in valve, and piston slides onto closed position on the main ball float of hydro powered, and buffering is floating
Ball slides onto throttle position in hydro powered, a large amount of aerofluxuss of basic stopping.After finally being throttled by water, ball float Slow Close water hammer-resistant.
As shown in Figure 4, the duty of trace exhaust section is:
Element |
Position |
Action |
State |
Piston: |
Sealing station |
Hydro powered main ball float ascending piston is closed |
Hollow bar trace aerofluxus |
Buffering ball float |
Throttle position |
Hydro powered buffering ball float rises closes |
Medium does not flows |
Operation principle is:
After current are buffered, buffering ball float is by moving on to the position that throttles in hydro powered, piston is driven by the current of main ball float
Moving and float closedown, dissolved gas is assembled, and when water normally carries in pipe, arrives certain degree if any a small amount of air accumulation in valve,
Piston will not shift because of medium differential pressure, period, but in valve, water level can decline, and main ball float declines therewith, and now a small amount of air passes through
Hollow bar aperture is automatically drained out minimum gas.
As it is shown in figure 5, the duty of a large amount of inspiratory limb is:
Element |
Position |
Action |
State |
Piston: |
Reset |
It is slid onto vertically downward in situ |
A large amount of air-breathings |
Buffering ball float |
Reset |
It is slid onto vertically downward in situ |
A large amount of air-breathings |
Operation principle is:
When termination of pumping is cut off the water, during in-pipe flow sky or pipe in produce negative pressure time, piston and buffering ball float open rapidly, vertically to
Lower reduction of spondylolisthesis, full flow sucks air in a large number.