CN103939660A - Floating ball self-sucking valve with lever structure and design method thereof - Google Patents
Floating ball self-sucking valve with lever structure and design method thereof Download PDFInfo
- Publication number
- CN103939660A CN103939660A CN201410112093.7A CN201410112093A CN103939660A CN 103939660 A CN103939660 A CN 103939660A CN 201410112093 A CN201410112093 A CN 201410112093A CN 103939660 A CN103939660 A CN 103939660A
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- CN
- China
- Prior art keywords
- valve
- self
- floating ball
- sucking
- lever
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
- F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
- F16K31/22—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with the float rigidly connected to the valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K33/00—Floats for actuation of valves or other apparatus
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Float Valves (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The invention provides a floating ball self-sucking valve with a lever structure and a design method of the floating ball self-sucking valve with the lever structure. The self-sucking valve comprises a valve body and a hollow floating ball. The self-sucking valve is characterized in that an air outlet perpendicular to the valve body is formed in the valve body, and the upper portion of the air outlet is open and is provided with a valve port cover; the hollow floating ball is connected with one end of an ejector rod through a floating ball fastening nut, the ejector rod penetrates through an ejector rod movable tube fixed to the valve body, the other end of the ejector rod is connected with a valve rod through a lever arranged on the side wall of a valve body cover, and a sealing rubber ring is fixed to the valve rod and located at the position of a valve hole of the valve port cover. According to the floating ball self-sucking valve with the lever structure, the acting force exerted when the floating ball self-sucking valve is closed is large, the reliability of the sealing performance of the valve is improved, the amount of leaked liquid, entering a displacement pump, of the self-sucking valve at the position of an inlet of the self-sucking pump is reduced, the operating efficiency and the reliability of the suction displacement pump are improved, and the pumping efficiency and the cavitation performance are improved.
Description
Technical field
The present invention relates to self-priming pump, particularly a kind of floating ball self-sucking valve and design method thereof with lever construction.
Background technique
Self-priming pump is a kind of special centrifugal pump, and it only need add a certain amount of water before referring to and starting first in the pump housing, without intake pipe is full of to water, after starting, can, by gas row light in intake pipe, enter a class water pump of normal work through certain hour.The advantages such as it has easy to use, reliable operation.
The subsidiary not special self-priming apparatus of general self-priming pump, for example internal-mixing and external-mix self-priming pump, such self-priming pump is due on the low side with the pump efficiency such as return port, liquid storage room and cavitation performance is also poorer.And with the self-priming pump of special self-priming apparatus, its self-priming valve is generally rubber steel ball valve, after rubber steel ball valve, connect displacement pump, the reliability of this rubber-steel ball is lower, sealing is poor, easily produces and reveals, and liquid is entered air-breathing with displacement pump, normally work thereby affect water pump, and can reduce pump efficiency and cavitation performance.Therefore, for the self-priming pump with self-priming apparatus, its self-priming performance and degree of vacuum have self-priming valve to determine to a great extent, and the design of self-priming valve plays key effect in whole self-priming pump self-priming performance design, and at present, the design method of the system of the self-priming valve of such self-priming pump lacks.
Summary of the invention
For improving the reliability that valve is movable and seal, the invention provides a kind of floating ball self-sucking valve and design method thereof with lever construction.Described floating ball self-sucking valve active force in the time closing with lever construction is large, strengthen the reliability of valve seal, reduce inlet of self-sucking pump place self-priming valve the liquid of displacement pump has been revealed, improved working efficiency and the reliability of aspirated volume pump, improved pump efficiency and cavitation performance.
With a floating ball self-sucking valve for lever construction, comprise valve body, hollow float, it is characterized in that, described valve body is provided with perpendicular air outlet, the upper opening of described air outlet and be provided with an air valve lid; Described hollow float is connected with one end of push rod by ball float tightening nut, described push rod is through the push rod adjustable pipe being fixed on valve body, the other end of push rod is connected with valve rod by the lever being located on body cap sidewall, on described valve rod, be fixed with sealed rubber plate 11, described sealed rubber plate 11 is positioned at the valve opening position of air valve lid.
With the floating ball self-sucking valve design method of lever construction, it is characterized in that, utilize following relation to determine the wall thickness a of the diameter D of described ball float, described ball float, valve opening opening area s:
a=4.17σD/E+C
1+C
2+C
3；
s=0.134Q/D
In formula: D-floating ball diameter, rice;
S-valve opening opening area, square metre;
A-ball float wall thickness, rice;
K-lever length ratio;
F
0-weight correction number, push rod weight, ox;
-weld strength coefficient, gets 0.8～1;
ρ
0-ball float density, kilograms per cubic meter;
ρ-worker quality liquid density, kilograms per cubic meter;
The allowable stress of σ-material, Kilograms Per Square Meter;
C
1thickness deviation value when-materials processing, gets 0.135 centimetre;
C
2-corrosion allowance;
C
3-punching stretch first, for the attenuate of material, is got 0.1～0.2a;
E-material extending Young's modulus;
Q-vacuum pump flow rate, cube meter per second.
Preferably, the power arm length of described lever and resistance arm length ratio are 0.8～1.75.
Preferably, the power arm length of described lever and resistance arm length ratio are 1.
Preferably, in the time that described hollow float adopts stainless steel material, described corrosion allowance C
2get 0 centimetre.
Pump moves downward because hollow float Action of Gravity Field makes push rod before running well, by lever, valve rod is moved upward, thereby sealed rubber plate is separated with air valve lid, air valve lid hole is opened carry out air-breathing, then the pump housing is full of liquid, in the time that liquid rises to a certain degree, by import liquid, hollow float is produced to upwards thrust, then by push rod effect power transmission, sealed rubber plate compression air valve lid institute perforate gap is sealed, thereby pump is normally worked.
Floating ball self-sucking valve with lever construction of the present invention, has reduced leakage loss, has improved pump efficiency, cavitation performance and reliability.Trial effect is good, and has improved the working life of pump simultaneously.
Design method of the present invention, can determine the self-priming valve desired parameters that runs well under the start operating performance of self-priming pump design and peak rate of flow operating mode.Not only improve the mobility status in self-priming pump with the self-priming valve of the present invention design, reduced the hydraulic loss of self-priming pump and improved self-priming performance, meanwhile, improved self-priming pump performance and operational reliability.
Brief description of the drawings
Fig. 1 is the structural representation of the floating ball self-sucking valve with lever construction of the present invention.
Description of reference numerals is as follows:
1-valve body, 2-hollow float, 3-ball float tightening nut, 4-push rod adjustable pipe, 5-body cap, 6-push rod, 7-screw, 8-lever, 9-screw, 10-valve rod, 11-sealed rubber plate, 12-air valve lid, 13-balance pivot, 14-valve opening.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to this.
As shown in Figure 1, the floating ball self-sucking valve with lever construction of the present invention, comprises valve body 1, hollow float 2, and described valve body 1 is provided with perpendicular air outlet, the upper opening of described air outlet and be provided with an air valve lid 12; Described hollow float 2 is connected with one end of push rod 6 by ball float tightening nut 3, described push rod 6 is through the push rod adjustable pipe 4 being fixed on valve body 1, the other end of push rod 6 is connected with valve rod 10 by lever 8, and the balance pivot 13 of described lever 8 is fixed on body cap 5 sidewalls.The power arm length of described lever 8 and resistance arm length ratio are 0.8～1.75.On described valve rod 10, be fixed with sealed rubber plate 11, described sealed rubber plate 11 is positioned at valve opening 14 positions of air valve lid 12.
Described valve body 1 is positioned at the top of self-priming pump and is connected with inlet of self-sucking pump, and the connection of described air outlet vacuumizes displacement pump suction port.In the time of self-priming pump entry into service, at hollow float 2, under the Action of Gravity Field of push rod 6, by the effect of lever 8 and valve rod 10, sealed rubber plate 11 moves upward, valve is in opening state, displacement pump vacuumizes, there is perforate ventilation at valve body 1 middle part, push rod adjustable pipe 4 plays fixation hollow ball float 2 effect of moving up and down, when valve opening, air flows to displacement pump through gentle Valve mouth cover 12 openings of valve body 1 middle part hole, thereby making self-priming pump internal gas pressure reduce water level rises, water level rises and impels hollow float 2 to float, drive push rod 6 to move upward by buoyancy, when water level rises to a certain degree, by lever 8, valve rod 10 and sealed rubber plate 11 are moved downward and compress air valve lid 12, throttle down.
In self-priming valve working procedure, as objective function Π=f (D, k, a, s) >=1 o'clock, control valve can not lose efficacy.Wherein: objective function Π=f (D, k, a, s) is:
Π=f(D,k,a,s)=[πD
3(ρ-ρ
0)k/6-F
0]/Δps
In formula: D-floating ball diameter, rice;
ρ
0-ball float density, kilograms per cubic meter;
ρ-worker quality liquid density, kilograms per cubic meter;
F
0-weight correction number, push rod weight, ox;
Δ p-different operating mode inlet of self-sucking pump pressure changes, ox/square metre;
A-ball float wall thickness, rice;
S-valve opening opening area, square metre.
Draw floating ball diameter D, valve opening opening area s, the ball float wall thickness a of self-priming valve according to the condition of objective function Π=f (D, k, a, s) >=1:
a=4.17σD/E+C
1+C
2+C
3
s=0.134Q/D
In formula: D-floating ball diameter, rice;
S-valve opening opening area, square metre;
A-ball float wall thickness, rice;
K-lever length ratio;
F
0-weight correction number, push rod weight, ox;
-weld strength coefficient, gets 0.8～1;
ρ
0-ball float density, kilograms per cubic meter;
ρ-worker quality liquid density, kilograms per cubic meter;
The allowable stress of σ-material, Kilograms Per Square Meter;
C
1thickness deviation value when-materials processing, gets 0.135 centimetre, and stainless steel gets 0;
C
2-corrosion allowance;
C
3-punching stretch first, for the attenuate of material, is got 0.1～0.2a;
E-material extending Young's modulus;
Q-vacuum pump flow rate, cube meter per second.
Described embodiment is preferred embodiment of the present invention; but the present invention is not limited to above-mentioned mode of execution; in the situation that not deviating from flesh and blood of the present invention, any apparent improvement, replacement or modification that those skilled in the art can make all belong to protection scope of the present invention.
Claims (5)
1. the floating ball self-sucking valve with lever construction, comprises valve body (1), hollow float (2), it is characterized in that, described valve body (1) is provided with perpendicular air outlet, the upper opening of described air outlet and be provided with an air valve lid (12); Described hollow float (2) is connected with one end of push rod (6) by ball float tightening nut (3), described push rod (6) is through the push rod adjustable pipe (4) being fixed on valve body (1), the other end of push rod (6) is connected with valve rod (10) by the lever (8) being located on body cap (5) sidewall, on described valve rod (10), be fixed with sealed rubber plate (11), described sealed rubber plate (11) is positioned at valve opening (14) position of air valve lid (12).
2. the design method of the floating ball self-sucking valve of band lever according to claim 1 (8) structure, is characterized in that, utilizes following relation to determine the wall thickness a of the diameter D of described ball float (2), described ball float (2), valve opening (14) opening area s:
a=4.17σD/E+C
1+C
2+C
3；
s=0.134Q/D
In formula: D-floating ball diameter, rice;
S-valve opening (14) opening area, square metre;
A-ball float wall thickness, rice;
F
0-weight correction number, push rod weight, ox;
-weld strength coefficient, gets 0.8～1;
ρ
0-ball float density, kilograms per cubic meter;
ρ-worker quality liquid density, kilograms per cubic meter;
The allowable stress of σ-material, Kilograms Per Square Meter;
C
1thickness deviation value when-materials processing, gets 0.135 centimetre;
C
2-corrosion allowance;
C
3-punching stretch first, for the attenuate of material, is got 0.1～0.2a;
E-material extending Young's modulus;
Q-vacuum pump flow rate, cube meter per second.
3. the floating ball self-sucking valve with lever construction according to claim 1, is characterized in that, the power arm length of described lever (8) and resistance arm length ratio are 0.8～1.75.
4. the floating ball self-sucking valve with lever construction according to claim 1, is characterized in that, the power arm length of described lever (8) and resistance arm length ratio are 1.
5. design method according to claim 2, is characterized in that, in the time that described hollow float (2) adopts stainless steel material, and described corrosion allowance C
2get 0 centimetre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410112093.7A CN103939660B (en) | 2014-03-24 | 2014-03-24 | The floating ball self-sucking valve of a kind of band lever construction and method for designing thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410112093.7A CN103939660B (en) | 2014-03-24 | 2014-03-24 | The floating ball self-sucking valve of a kind of band lever construction and method for designing thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103939660A true CN103939660A (en) | 2014-07-23 |
| CN103939660B CN103939660B (en) | 2016-08-17 |
Family
ID=51187455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410112093.7A Active CN103939660B (en) | 2014-03-24 | 2014-03-24 | The floating ball self-sucking valve of a kind of band lever construction and method for designing thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103939660B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339501A (en) * | 2017-07-24 | 2017-11-10 | 艾迪机器(杭州)有限公司 | A kind of vacuum plant of liquid level equilibrium self-shield |
| CN107476408A (en) * | 2017-07-24 | 2017-12-15 | 艾迪机器(杭州)有限公司 | A kind of lever buoyancy adaptively aids in mechanism of draining flooded fields |
| CN109258529A (en) * | 2018-11-28 | 2019-01-25 | 中国海洋大学 | Spring up hatching system |
| CN112555436A (en) * | 2020-12-08 | 2021-03-26 | 甘肃农业大学 | A irrigation device that is used for interior pipeline liquid level from floater overflow that falls |
| CN112610702A (en) * | 2020-12-14 | 2021-04-06 | 河海大学 | Electric butterfly valve for pipeline water delivery control |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042550U (en) * | 1988-09-20 | 1989-08-09 | 周韶华 | Automatic valve for draining water and exhaust |
| JPH0221086A (en) * | 1988-07-11 | 1990-01-24 | Tokyo Tatsuno Co Ltd | Float valve |
| CN201348086Y (en) * | 2008-12-16 | 2009-11-18 | 周文乾 | Integral buoyancy valve structure |
| CN202401549U (en) * | 2011-11-22 | 2012-08-29 | 屈静波 | Self-absorption type float valve |
-
2014
- 2014-03-24 CN CN201410112093.7A patent/CN103939660B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0221086A (en) * | 1988-07-11 | 1990-01-24 | Tokyo Tatsuno Co Ltd | Float valve |
| CN2042550U (en) * | 1988-09-20 | 1989-08-09 | 周韶华 | Automatic valve for draining water and exhaust |
| CN201348086Y (en) * | 2008-12-16 | 2009-11-18 | 周文乾 | Integral buoyancy valve structure |
| CN202401549U (en) * | 2011-11-22 | 2012-08-29 | 屈静波 | Self-absorption type float valve |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339501A (en) * | 2017-07-24 | 2017-11-10 | 艾迪机器(杭州)有限公司 | A kind of vacuum plant of liquid level equilibrium self-shield |
| CN107476408A (en) * | 2017-07-24 | 2017-12-15 | 艾迪机器(杭州)有限公司 | A kind of lever buoyancy adaptively aids in mechanism of draining flooded fields |
| CN109258529A (en) * | 2018-11-28 | 2019-01-25 | 中国海洋大学 | Spring up hatching system |
| CN112555436A (en) * | 2020-12-08 | 2021-03-26 | 甘肃农业大学 | A irrigation device that is used for interior pipeline liquid level from floater overflow that falls |
| CN112555436B (en) * | 2020-12-08 | 2022-10-18 | 甘肃农业大学 | A irrigation device that is used for interior pipeline liquid level from floater overflow that falls |
| CN112610702A (en) * | 2020-12-14 | 2021-04-06 | 河海大学 | Electric butterfly valve for pipeline water delivery control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103939660B (en) | 2016-08-17 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Fu Qiang Inventor after: Liu Gang Inventor after: Wang Xiuli Inventor after: Zhang Fan Inventor before: Fu Qiang Inventor before: Zhu Rongsheng Inventor before: Wang Xiuli Inventor before: Zhang Fan |
|
| COR | Change of bibliographic data |