CN202493736U - An anti-dust air valve with a large ratio of high air suction capacity to extremely low air discharge capacity - Google Patents
An anti-dust air valve with a large ratio of high air suction capacity to extremely low air discharge capacity Download PDFInfo
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- CN202493736U CN202493736U CN2011204619741U CN201120461974U CN202493736U CN 202493736 U CN202493736 U CN 202493736U CN 2011204619741 U CN2011204619741 U CN 2011204619741U CN 201120461974 U CN201120461974 U CN 201120461974U CN 202493736 U CN202493736 U CN 202493736U
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- air suction
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Abstract
The utility model discloses an anti-dust air valve with a large ratio of high air suction capacity to extremely low air discharge capacity. The air valve is installed on a water conveyance system and comprises a negative-pressure air suction valve and a trace air discharge valve. The negative-pressure air suction valve comprises an air suction valve body, a valve cover, a high-speed air suction orifice, a guide pipe and a valve flap with a spring. The trace air discharge valve comprises a trace discharge body, a trace air discharge orifice, a floating ball, and a lever assembly. The valve flap moves up and down along the guide pipe to enable the high-speed air suction orifice of the air suction valve to maintain a closed or open state through enclosing and opening. The floating ball descends or ascends and thus drives the lever assembly to open or close the trace air discharge orifice. The anti-dust air valve meets the requirement for ventilation in a waterway system under special conditions and specifically meets the requirement for safety protection under the exceptional conditions of water hammer.
Description
Technical field
The utility model relates to a kind of air valve, relates in particular to a kind of little valve of the high suction of the box-like vast scale of two functionalities with two apertures that can prevent to suck dust.
Background technique
Existing common air inlet and exhaust valve has only an aperture, and is can high speed air-breathing, again can the high speed exhaust, be one can two-way flow air valve, intake and exhaust aperture diameter proportion is 1: 1, can not satisfy the high little row's of suction of special occasions needs (vast scale) extraordinary requirement.And, its air-breathing aperture of existing Aspirating valves generally up, downward can the inspiration bulk deposition when air-breathing dust on it, thereby cross flow medium in the contaminated system.
The model utility content
The problem that the utility model will solve provides a kind of air valve group of two function specific combination of air-breathing, the micro-exhaust of high speed of two apertures; Intake and exhaust aperture diameter proportion reaches 2: 1～and 200: 1 (ratio of area reach 4: 1～40000: 1), satisfy the ventilation problem under the extraordinary situation in the water transport pipeline system, especially safety protection problem under the unusual water hammer situation ought take place.
For solving the problems of the technologies described above, the utility model adopts following technological scheme: the little row's formula air valve of the high suction of a kind of dust protection vast scale, and this air valve is installed on the water-carriage system, comprising:
A, negative inspiratory pressure valve; Comprise intake valve body, valve gap, the air-breathing aperture of high speed, conduit and have the flap of spring; Said flap covers on the periphery valve seat of the air-breathing aperture of the high speed of intake valve body; Said spring is arranged on the below of flap, and said flap moves up and down along conduit, and the air-breathing aperture of Aspirating valves sealing high speed is kept shut or aeration status;
B, micro-outlet valve; Be connected the valve port of negative inspiratory pressure valve one side through connecting tube before; Comprise little valve body, micro-vent ports, ball float and lever assembly, said micro-vent ports below is provided with valve seat, and this valve seat connects lever assembly; Said ball float connects lever assembly, and the decline of said ball float or the drive lever assembly that rises open or close micro-vent ports.
The proportion of said negative inspiratory pressure valve and micro-outlet valve suction tolerance is 4: 1 to 40000: 1.
Said spring lower end is provided with adjusting nut, and this adjusting nut is used for Regulation spring and changes its elastic force value, thereby changes negative pressure unlatching value, and the regulation range of said adjusting nut is-80,000Pag～-1Pag between.
Said intake valve body and valve gap interconnect through bolt and nut, are provided with seal ring between said intake valve body and the flap, and said seal ring is " O " RunddichtringO, and the sealing circle is fixed in the dovetail groove.
Said micro-vent ports is through moving down, and its interface position allows the top part to deposit gas, and inner gas storage structure can effectively prevent cryogenic freezing spalling valve body.
This Aspirating valves is that cast iron, spheroidal graphite cast iron, cast steel, stainless steel, brass, bronze, alloyed steel, two phase stainless steel or engineering plastics are made, can adapt to multiple medium operating modes such as clean water, waste water, sewage, hot water, seawater and part chemical industry solvent.
Said little valve body is connected on valve gap or the valve body through short tube, connects little valve lid through bolt, its interface position can height can be low.
The air-breathing aperture of said high speed is towards the air-breathing port configurations of mo(u)ld bottom half up attraction type, is inhaled into aqueduct thereby can reduce even avoid dust to pile up at valve port significantly, reduces contamination by dust, avoids water supply quality to descend, and the top-opening type structure allows valve group on-line maintenance.
Adopt technique scheme, compared with prior art, the advantage that the utility model had is following:
1. when water column occurring and separate, the high speed Aspirating valves respond little negative pressure (1kPa～-3kPa) open fast, air-breathing in a large number, destroy vacuum; When water column makes up; Because this valve group does not have the high speed vent ports; Overwhelming majority air bag is trapped in the pipeline temporarily; The elasticity of holding back air bag is used in and suppresses cavity and make water hammer-be the negative pressure water hammer up or be referred to as very water hammer, has the function that replaces surge shaft, surge tower or water attack barometric tank.
2. the utility model allow to be selected the micro-outlet valve aperture size of plurality of specifications: from 1.6mm, 2.4mm, 3.2mm, 4.8mm, 5.6mm to large-sized 9.5mm, 12.5mm, 25mm or the like; Select the micro-vent ports of suitable dimension according to design discharge, guarantee that pipeline has suitable micro-venting capacity and suitable intake and exhaust aperture ratio, make the air-breathing big capacity air of coming in of high speed can be by timely discharge; Thereby raising emptying effectiveness; Reduce the water delivery energy consumption, reduce the repeated construction investment, energy-saving and cost-reducing; Satisfy large-scale intake and exhaust aperture proportion requirement simultaneously, reduce to greatest extent and make water hammer up and boost.
3. the intakeport of said high speed Aspirating valves is towards mo(u)ld bottom half up attraction type structure.Component are few, and simplicity of design is reasonable, and volume is little, and are in light weight, and the valve size scope can be accomplished DN10～1200 even bigger.
4. inner gas storage structure prevents cryogenic freezing spalling valve body: the connection mouth of micro-exhaust is positioned at lower position of Aspirating valves; To allow the part air to remain in valve body of main valve top and get rid of without micro-outlet valve; The space of volumetric expansion when reserving ice up in winter, protection outlet valve group make it be not easy to be frozen freezing.
5. should height inhale little valve valve port and be provided with dovetail groove, O type circle is set in the said dovetail groove, form metal hard-sealing and rubber sealing two-layer compound seal form.
6. should height inhale between valve body and the valve gap of little valve and adopt screw to fix, form the top-opening type structure, make things convenient for on-line maintenance.
7. the little valve material of high suction can adopt cast iron, spheroidal graphite cast iron, cast steel, stainless steel, brass, bronze, alloyed steel, two phase stainless steel even engineering plastics or the like, can adapt to multiple medium operating modes such as clean water, waste water, sewage, hot water, seawater and part chemical industry solvent.
Description of drawings
Fig. 1 is the structure sectional view of the utility model;
Fig. 2 is the A place amplification view of Fig. 1;
Fig. 3 is the B place amplification view of Fig. 1;
Fig. 4 is the utility model embodiment sectional view.
Among the figure: 1, intake valve body, 2, adjusting nut, 3, spring, 4, the air-breathing aperture of high speed, 5, seal ring; 6, flap, 7, conduit, 8, valve gap, 9, little valve lid, 10, micro-vent ports; 11, lever assembly, 12, ball float, 13, little valve body, 14, connecting tube.
Embodiment
Like Fig. 1, shown in Figure 4; The negative inspiratory pressure valve; Comprise the air-breathing aperture of intake valve body 1, valve gap 8, high speed 4, conduit 7 and have the flap 6 of spring 3, said flap 6 covers on the 4 peripheral valve seats of the air-breathing aperture of the high speed of intake valve body 1, and said spring 3 is arranged on the below (also can be upside down in the flap top when requiring very lower negative pressure) of flap 6; Said flap 6 moves up and down along conduit 7, and the air-breathing aperture 4 of Aspirating valves sealing high speed is kept shut or aeration status.
The trace outlet valve; Be connected the valve port of negative inspiratory pressure valve one side through connecting tube 14 before; Comprise little valve body 13, little valve lid 9, micro-vent ports 10, ball float 12 and lever assembly 11, said micro-vent ports 10 belows are provided with valve seat, and this valve seat connects lever assembly 11; This other end that connects lever assembly 11 connects ball float 12, and the decline of said ball float 12 or the drive lever assembly 11 that rises open or close micro-vent ports 10.
Embodiment one: as shown in Figure 4, during for draining, the water column of some position possibly produce separation in the pipe termination of pumping suddenly or throttle down or people; Vacuum (being negative pressure) appears in the pipe, reach in negative pressure value-1kPa～-during 3kPa, outside pressure is greater than internal pressure; Aspirating valves external and internal pressure difference associating spring jacking force overcomes the flap deadweight; Promote to move on the flap, open in the air-breathing aperture 4 of high speed, and air passes through the air-breathing aperture 4 of high speed of negative inspiratory pressure valve from getting into fast all around; It is minimum that the interior negative pressure of pipe is dropped to, to guarantee the Security of pipe fitting and sealed interface.
Embodiment two: as shown in Figure 1; When being driven by water pump perhaps because of gravity reflux; Water column in the pipe of said position begins to make up, when system pressure is increased near atmospheric pressure but still is in micro-vacuum state, the flap deadweight just overcome spring jacking force and inside and outside differential pressure with joint efforts and close the aperture; Stop suction, also do not allow exhaust.Because there is not other high speed vent ports, the gas in the pipe can not be discharged at a high speed, and can only discharge lentamente via micro-outlet valve; Most of gas between the water column is trapped in the pipe temporarily; Form interim elastic bag, cushioned by elastic bag when water column makes up, significantly cut down make water column up make acceleration and Impact energy up; Effectively having suppressed to make water hammer up boosts; Protection pipeline safety is a kind of novel vacuum breaking and negative pressure protective equipment, and the ratio of common 100: 1 to 10000: 1 intake and exhaust area of technical requirements can both easily satisfy on the engineering.
Embodiment three: as shown in Figure 3, when pipeline current proper flow, the minimum gas that current discharged gets into the cavity of micro-outlet valve through Aspirating valves; Gas in the cavity increases gradually; Cause drawdown in the valve, when dropping to ball float 12 with upper/lower positions, ball float 12 falls; Drive lever assembly 11 and open micro-vent ports 10, intermittently get rid of the air that accumulates in the valve body.
Embodiment four: as shown in Figure 1; Regulate negative pressure unlatching value: Regulation spring 3 is enclosed within on the conduit 7, and the adjusting nut 2 of Regulation spring 3 belows perhaps changes flap weight or is inverted spring above flap, just can change negative pressure unlatching value; Regulation range is greatly about-80; 000Pag is between-the 1Pag (gauge pressure), and common negative pressure unlatching value scope should be at-3000Pa between-the 500Pa, and different negative pressure unlatching values possibly need the spring of different stage and the flap combination realization of Different Weight.
Embodiment five: as shown in Figure 1, avoid dust to suck: the air-breathing aperture of high speed 4 structures are designed to towards the mo(u)ld bottom half up attraction type, are inhaled into aqueduct thereby can reduce even avoid dust to pile up at valve port significantly, reduce contamination by dust, avoid water supply quality to descend.
Embodiment six: as shown in Figure 1, embedded anti-freezing structure: inner gas storage structure can effectively prevent cryogenic freezing spalling valve body; The connection mouth of trace exhaust is positioned at lower position of internal surface under the Aspirating valves valve gap; To allow the part air to remain in valve body of main valve top and get rid of without micro-outlet valve; The space of volumetric expansion when reserving ice up in winter guarantees that outlet valve is not easy to be frozen freezing.
Embodiment seven: as shown in Figure 2, seal ring 5 is " O " RunddichtringO, and " O " type circle sealing valve port form in the dovetail groove: metal hard-sealing adds the dual compound seal form of rubber sealing, can under low pressure seal means of press seals in also guaranteeing.
Embodiment eight: as shown in Figure 1, vitals mainly concentrates under the valve gap, open valve gap after, can on-line maintenance.
Claims (5)
1. a dust protection vast scale height is inhaled little row's formula air valve, and this air valve is installed on the water-carriage system, it is characterized in that, comprising:
A, negative inspiratory pressure valve; Comprise intake valve body (1), valve gap (8), the air-breathing aperture of high speed (4), conduit (7) and have the flap (6) of spring (3); Said flap (6) covers on the peripheral valve seat in the air-breathing aperture of high speed (4) of intake valve body (1); Said spring (3) is arranged on the below of flap (6), and said flap (6) moves up and down along conduit (7), and the Aspirating valves sealing air-breathing aperture of high speed (4) is kept shut or aeration status;
B, micro-outlet valve; Before being connected the valve port of negative inspiratory pressure valve one side through connecting tube (14); Comprise little valve body (13), micro-vent ports (10), ball float (12) and lever assembly (11), said micro-vent ports (10) below is provided with valve seat, and this valve seat connects lever assembly (11); Said ball float (12) connects lever assembly (11), and the decline of said ball float (12) or the drive lever assembly (11) that rises open or close micro-vent ports (10).
2. the little row's formula air valve of the high suction of dust protection vast scale according to claim 1, it is characterized in that: the proportion of said negative inspiratory pressure valve and micro-outlet valve suction tolerance is 4: 1 to 40000: 1.
3. dust protection vast scale according to claim 1 is high inhales little row's formula air valve, and it is characterized in that: said spring (3) lower end is provided with adjusting nut (2), and the regulation range of said adjusting nut (2) is-80,000Pag～-1Pag between.
4. the little row's formula air valve of the high suction of dust protection vast scale according to claim 1, it is characterized in that: this Aspirating valves is that cast iron, spheroidal graphite cast iron, cast steel, stainless steel, brass, bronze, alloyed steel, two phase stainless steel or engineering plastics are made.
5. the little row's formula air valve of the high suction of dust protection vast scale according to claim 1, it is characterized in that: said little valve body (13) is connected on valve gap or the valve body through short tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204619741U CN202493736U (en) | 2011-11-18 | 2011-11-18 | An anti-dust air valve with a large ratio of high air suction capacity to extremely low air discharge capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204619741U CN202493736U (en) | 2011-11-18 | 2011-11-18 | An anti-dust air valve with a large ratio of high air suction capacity to extremely low air discharge capacity |
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| Publication Number | Publication Date |
|---|---|
| CN202493736U true CN202493736U (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204619741U Expired - Lifetime CN202493736U (en) | 2011-11-18 | 2011-11-18 | An anti-dust air valve with a large ratio of high air suction capacity to extremely low air discharge capacity |
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| CN (1) | CN202493736U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672042A (en) * | 2013-10-21 | 2014-03-26 | 深圳市华力大机电技术有限公司 | Rear adjustable three-hole composite type waterproof hammer air group valve |
-
2011
- 2011-11-18 CN CN2011204619741U patent/CN202493736U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672042A (en) * | 2013-10-21 | 2014-03-26 | 深圳市华力大机电技术有限公司 | Rear adjustable three-hole composite type waterproof hammer air group valve |
| CN103672042B (en) * | 2013-10-21 | 2016-09-21 | 深圳市华力大机电技术有限公司 | A kind of rearmounted adjustment type three aperture waterproof system hammer air cock valve group |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180312 Address after: 311835, Zhejiang City, Zhuji province shop Town Industrial Zone Patentee after: ZHEJIANG DUNAN INTELLIGENT CONTROL TECHNOLOGY CO., LTD. Address before: Futian District Shenzhen City, Guangdong Province, 518034 North Road No. 7003 building 1706 China Patentee before: Shenzhen Hualida Electromechanical Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |
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| CX01 | Expiry of patent term |