CN105123661A - Anti-dripping valve - Google Patents
Anti-dripping valve Download PDFInfo
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- CN105123661A CN105123661A CN201510646604.8A CN201510646604A CN105123661A CN 105123661 A CN105123661 A CN 105123661A CN 201510646604 A CN201510646604 A CN 201510646604A CN 105123661 A CN105123661 A CN 105123661A
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- valve
- dripping
- bellows
- cylinder
- valve seat
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Abstract
The invention relates to an anti-dripping valve. The anti-dripping valve comprises a corrugated pipe, a cylinder and a valve seat, wherein a first end of the corrugated pipe is connected with a first port of the valve seat; a second end of the corrugated pipe is connected with an exhaust port of the cylinder; an air inlet of the cylinder is connected with compressed air; a second port of the valve seat is connected with a nozzle and is also connected with a liquid adding pump; and the corrugated pipe is a welded corrugated pipe. The anti-dripping valve adopting the structure is good in anti-dripping effect, simple in structure, long in service life, low in manufacturing cost, small in volume, convenient in installation and wide in application range.
Description
Technical field
The present invention relates to mechanical field, particularly relate to liquid batch and add equipment, spraying equipment, specifically refer to a kind of anti-dripping valve.
Background technology
Nowadays, in the every field of prior art, when liquid (or raw material), after the amount arrival setting value of spraying, the residual liquid around nozzle continues drippage, can have a strong impact on the quality of product.
Especially in agricultural production, in order to protect Crop securify, health, the high place of production growth, the control of disease, worm, crop smothering is absolutely necessary, in order to prevent cure the disease, worm, crop smothering, need to spray various agricultural chemicals to crops.No matter be biopesticide, organic agricultural chemicals, safety pesticide or chemical pesticide, spray that these agricultural chemicals are requisite will adopt pesticide dispersal equipment.Spray bar type spraying machine is a kind of common pesticide dispersal equipment, and spray bar type spraying machine is a kind of by the engine-driven atomiser of cartridge nozzle on horizontal spray boom or setting spray boom.The operating efficiency of spray bar type spraying machine is high, sprinkling quality is good, spouting liquid is evenly distributed, and applicable large area sprays the liquid formulation of various agricultural chemicals, fertilizer and plant growth regulation etc., is widely used in field crop, lawn, nursery, wall-vineyard and specific occasion.
Spray bar type spraying machine in existing technology; usually shower nozzle is directly installed on the outlet end of spray boom; spray bar type spraying machine shutting down, shift, keep in repair, add water, in the process such as dosing; liquid in pipeline is constantly outflowed by shower nozzle; thus cause the waste of liquid and liquid to the pollution of surrounding environment; especially for some go out natural disposition and optionally liquid; may cause that crop is long, weeds are not long; poisoning is the longest reaches 3 years; namely do not grow grass and crop in 3 years by liquid medicine contamination district, harm is serious.
Along with the application of anti-dripping valve and the appearance of corresponding local regulation, the shower nozzle of spray bar type spraying machine does not assemble anti-dripping valve is forbidden to enter field work, and above-mentioned pollution situation makes moderate progress.But existing anti-dripping valve rustic, antidrip effect is poor, still has part liquid and flows out from shower nozzle, still have part liquid and be wasted, and these liquids flowed out still can pollute surrounding environment.
Summary of the invention
The object of the invention is the shortcoming overcoming above-mentioned prior art, provide a kind of spray equipment stop after the anti-dripping valve of no longer dropping liquid.
To achieve these goals, anti-dripping valve of the present invention has following formation:
This anti-dripping valve, its main feature is, described anti-dripping valve comprises bellows, cylinder and valve seat; The first end of described bellows is connected with the first port of described valve seat, second end of described bellows is connected with the exhaust outlet of described cylinder, the air inlet of described cylinder is connected with compressed air, second port of described valve seat is connected with nozzle, and the second port of described valve seat is connected with pump for adding liquid.
Further, described bellows is welding bellows.
Further, described anti-dripping valve also comprises a guide pipe, described guide pipe is sheathed on the outside of described welding bellows, slide along the inwall of described guide pipe to make described welding bellows, and the first end of described guide pipe is tightly connected mutually with described valve seat, the second end of described guide pipe is tightly connected mutually with described cylinder.
Further, described cylinder is connected with described compressed air by a two-position three way magnetic valve.
Further, the second port of described valve seat is connected with pump for adding liquid by the two-position two-way solenoid valve of an one-way conduction.
Have employed the anti-dripping valve in this invention, compared with prior art, there is following useful technique effect:
1) antidrip effective;
2) anti-dripping valve structure is simple, and the life-span is long, low cost of manufacture;
3) volume is little, easy for installation.
Accompanying drawing explanation
Fig. 1 is the structural representation of anti-dripping valve in one embodiment of the invention.
Fig. 2 is the structural representation of anti-dripping valve when spray equipment works in one embodiment of the invention.
Fig. 3 is the structural representation of anti-dripping valve when spray equipment quits work in one embodiment of the invention.
Wherein,
1 welding bellows
2 cylinders
3 valve seats
4 nozzles
5 pump for adding liquids
6 guide pipes
7 two-position three way magnetic valves
8 two-position two-way solenoid valves
Embodiment
In order to more clearly describe technology contents of the present invention, conduct further description below in conjunction with specific embodiment.
In the present invention, anti-dripping valve adopts is inverted Method for Installation, and during suck-back, volume increases, nozzle 4 forefront pressure removal.
Anti-dripping valve comprises can reciprocating welding bellows 1, welding bellows 1 is allowed to produce reciprocating cylinder 2, the guide pipe 6 (because welding bellows 1 is axially softer, so want guide pipe 6 normally to stretch) be used for as welding bellows 1 leads, valve seat 3 and other annexes.
The realization of anti-dripping valve function depends primarily on the technical characteristic of welding bellows 1.
Welding bellows is a kind of by many thin type hollow membrane shaping with impact style, utilizes the high-fidelity made by precision welding and flexible metal tube.Welding bellows 1 has following characteristic: withstand voltage, heatproof, corrosion-resistant, good airproof performance, and the bellows than tradition shaping also has two outstanding advantages: deflection is large, the life-span is long.
Refer to shown in Fig. 2, when spray equipment starts, two-position three way magnetic valve 7 obtains electric simultaneously, and cylinder 2 push rod stretches out, and welding bellows 1 is in confined state, and cavity volume diminishes; Two-position two-way solenoid valve 8 one-way conduction, spray equipment normally works.
Refer to shown in Fig. 3, when pump for adding liquid 5 stops, cylinder 2 pusher retracted simultaneously, welding bellows 1 relies on the elasticity of self naturally to extend, cavity volume becomes large, thus creating suck-back power, the soldered bellows 1 of residual liquid be in around nozzle 4 absorbs, and prevents the generation of nozzle 4 dropping liquid phenomenon.
During unlatching spray equipment, cylinder 2 stretches out again, and the liquid that soldered bellows 1 absorbs is discharged, and so periodic work, prevents the generation of dropping liquid phenomenon.
In a kind of preferred embodiment, the following condition of selection demand fulfillment of cylinder 2:
(1) minimum thrust of cylinder 2
According to the pressure in nozzle 4, the minimum thrust that cylinder 2 needs can be extrapolated, cylinder 2 cylinder diameter can be determined.
(2) effective travel
Need the distance of suck-back (the L length in Fig. 2) that the effective travel of cylinder 2 can be extrapolated according to nozzle 4 and liquid.
In a kind of preferred embodiment, the following condition of selection demand fulfillment of welding bellows 1:
(1) sealing of welding bellows 1
This anti-dripping valve need utilize the sealing of welding bellows 1 absorb liquid and discharge, so welding bellows 1 and can not have leakage phenomenon with the junction of welding bellows.
(2) good springiness
This anti-dripping valve needs to move back and forth, so elasticity will be got well.Concrete reciprocating motion number of times (or life-span) can be determined according to the frequency of nozzle 4 periodic switch.
(3) intensity will be got well
This anti-dripping valve needs to bear certain pressure, so welding bellows 1 needs certain intensity, the great power of concrete needs, needs to calculate according to the pressure in nozzle 4.
(4) material of welding bellows 1 is selected according to the character of liquid (acid, alkaline etc.).
(5) need internal diameter and the length of the position calculation bellows of suck-back according to the diameter of fluid pipeline and liquid, anti-dripping valve has suitable volume just can complete release and antidrip.
When liquid spraying equipment completes the spraying operation of one-period, nozzle quits work and anti-dripping valve starts, thus make the state of welding bellows change elongation state into from by compression, at this moment welding bellows volume is large from little change, create suck-back power, thus can absorption nozzle surrounding liquid, force the residual liquid at nozzle place to enter welding bellows, prevent nozzle dropping liquid phenomenon to occur, ensure that the quality of product.
Have employed the anti-dripping valve in this invention, compared with prior art, there is following useful technique effect:
1) antidrip effective;
2) anti-dripping valve structure is simple, and the life-span is long, low cost of manufacture;
3) volume is little, easy for installation.
Above-described embodiment is this patent preferred embodiment; not be used for limiting practical range of the present invention; those skilled in the art under the prerequisite not departing from the principle of the invention, the improvement done, change, combination, substitute etc., all belong within the claims in the present invention scope required for protection.
In this description, the present invention is described with reference to its specific embodiment.But, still can make various amendment and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (5)
1. an anti-dripping valve, is characterized in that, described anti-dripping valve comprises bellows, cylinder and valve seat; The first end of described bellows is connected with the first port of described valve seat, second end of described bellows is connected with the exhaust outlet of described cylinder, the air inlet of described cylinder is connected with compressed air, second port of described valve seat is connected with nozzle, and the second port of described valve seat is connected with pump for adding liquid.
2. anti-dripping valve according to claim 1, is characterized in that, described bellows is welding bellows.
3. anti-dripping valve according to claim 2, it is characterized in that, described anti-dripping valve also comprises a guide pipe, described guide pipe is sheathed on the outside of described welding bellows, slide along the inwall of described guide pipe to make described welding bellows, and the first end of described guide pipe is tightly connected mutually with described valve seat, the second end of described guide pipe is tightly connected mutually with described cylinder.
4. anti-dripping valve according to claim 1, is characterized in that, described cylinder is connected with described compressed air by a two-position three way magnetic valve.
5. anti-dripping valve according to claim 1, is characterized in that, the second port of described valve seat is connected with pump for adding liquid by the two-position two-way solenoid valve of an one-way conduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510646604.8A CN105123661A (en) | 2015-10-08 | 2015-10-08 | Anti-dripping valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510646604.8A CN105123661A (en) | 2015-10-08 | 2015-10-08 | Anti-dripping valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105123661A true CN105123661A (en) | 2015-12-09 |
Family
ID=54709556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510646604.8A Pending CN105123661A (en) | 2015-10-08 | 2015-10-08 | Anti-dripping valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105123661A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113142828A (en) * | 2021-04-09 | 2021-07-23 | 苏州大学附属儿童医院 | Narcotic storage device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2252803Y (en) * | 1995-12-13 | 1997-04-23 | 广东轻工业机械集团公司 | Leakage-proof device of liquid bottling machine |
| CN2392960Y (en) * | 1998-05-14 | 2000-08-23 | 郑夫凯 | Leakage-proof valve |
| JP2002310313A (en) * | 2001-04-09 | 2002-10-23 | Kioritz Corp | Pressure regulating valve for pump |
| CN1576671A (en) * | 2003-07-07 | 2005-02-09 | Smc株式会社 | Suction valve |
| CN103831187A (en) * | 2012-11-20 | 2014-06-04 | Seb公司 | Spraying device comprising a nozzle for dispensing a liquid spray and household appliance provided with such a spraying device |
| CN205018143U (en) * | 2015-10-08 | 2016-02-10 | 上海曼孚机电控制工程有限公司 | Dripping proof valve |
-
2015
- 2015-10-08 CN CN201510646604.8A patent/CN105123661A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2252803Y (en) * | 1995-12-13 | 1997-04-23 | 广东轻工业机械集团公司 | Leakage-proof device of liquid bottling machine |
| CN2392960Y (en) * | 1998-05-14 | 2000-08-23 | 郑夫凯 | Leakage-proof valve |
| JP2002310313A (en) * | 2001-04-09 | 2002-10-23 | Kioritz Corp | Pressure regulating valve for pump |
| CN1576671A (en) * | 2003-07-07 | 2005-02-09 | Smc株式会社 | Suction valve |
| CN103831187A (en) * | 2012-11-20 | 2014-06-04 | Seb公司 | Spraying device comprising a nozzle for dispensing a liquid spray and household appliance provided with such a spraying device |
| CN205018143U (en) * | 2015-10-08 | 2016-02-10 | 上海曼孚机电控制工程有限公司 | Dripping proof valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113142828A (en) * | 2021-04-09 | 2021-07-23 | 苏州大学附属儿童医院 | Narcotic storage device |
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Application publication date: 20151209 |
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| WD01 | Invention patent application deemed withdrawn after publication |