CN1257168A - Pressure differential valve - Google Patents
Pressure differential valve Download PDFInfo
- Publication number
- CN1257168A CN1257168A CN 98125478 CN98125478A CN1257168A CN 1257168 A CN1257168 A CN 1257168A CN 98125478 CN98125478 CN 98125478 CN 98125478 A CN98125478 A CN 98125478A CN 1257168 A CN1257168 A CN 1257168A
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- valve
- auxiliary
- stamen
- piston
- cavity
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Abstract
The pressure difference valve is composed of main valve and auxiliary valve, in which the upper portion of main valve core of main valve is piston, its middle portion is cylindrical body whose diameter is less than that of piston, and its lower portion is valve cover whose diameter is slightly greater than that of cylindrical body, and the upper cavity, lower cavity and water outlet are respectively equipped with upper, middle and lower flow passages which are respectively communicated with middle, upper and lower small holes of auxiliary valve body of auxiliary valve, and the auxiliary valve core is a piston rod, when the valve core of auxiliary valve is controlled to move upwards or downwards, it can make upper flow passage respectively communicate with middle flow passage or lower flow passage to change the stress of upper and lower two directions of main valve so as to obtain upward or downward movement of main valve core, and can open or close valve.
Description
The present invention relates to valve.
The present large-capacity valve door that uses on the market, a kind of is mortor operated valve, a kind of is the leading type valve.Mortor operated valve need be with motor and driving mechanism not only complex structure but also price height.The leading type valve need have pilot hole, and not only complex structure but also the restriction that is subjected to hydraulic pressure can only be used in certain range hydraulic pressure, but also is subjected to the restriction of water quality, if as blowdown valve, tiny impurity makes pilot hole stop up easily and makes defective valve.
The objective of the invention is to overcome the defective of above-mentioned valve, a kind of valve that utilizes pressure reduction to change control structure is provided.
The solution of the present invention is: valve is made up of main valve and auxiliary-valve, the body cavity of main valve has upper and lower cavity, the epicoele diameter is slightly little than cavity of resorption, the main valve stamen is installed in the cavity of resorption, main valve stamen top is piston, the middle part is the cylindrical body of diameter less than piston, the bottom is that slightly larger in diameter is in cylindrical valve gap, the main valve body epicoele has upper runner to lead to auxiliary-valve, cavity of resorption also has middle runner to lead to auxiliary-valve, the main valve body water outlet has a lower flow channel to lead to auxiliary-valve in addition, and water intake is arranged on the lumen piston below of main valve body.Auxiliary-valve is made up of auxiliary valve body and secondary valve stamen, auxiliary valve body inner chamber upper, middle and lower have respectively three holes respectively with main valve body in, upper and lower runner communicates, the auxiliary valve body inner chamber is a piston cavity, and secondary valve stamen is made up of piston and piston rod, and the piston rod outer end is connected with active force mechanism.
The invention has the advantages that: utilize the pressure difference principle, only need very little active force can open the valve of the big flow of heavy caliber.If make solenoid valve, then only need by the big valve of little tractive force magnet control.
Accompanying drawing 1 is the structural representation of pressure differential valve.
Accompanying drawing 2 is rotary auxiliary-valve structural representation.
1 is upper runner among the figure, and 2 is main valve body, and 3 is the main valve stamen, and 4 is lower flow channel, and 5 is middle runner, and 6 is secondary valve stamen, and 7 is auxiliary valve body.
The present invention implements like this: valve is made up of main valve and auxiliary-valve, the body cavity of main valve has upper and lower cavity, the epicoele diameter is slightly little than cavity of resorption, the main valve stamen is installed in the cavity of resorption, main valve stamen top is piston, the middle part is the cylindrical body of diameter less than piston, the bottom is that slightly larger in diameter is in cylindrical valve gap, the main valve body epicoele has upper runner to lead to auxiliary-valve, cavity of resorption also has middle runner to lead to secondary valve, the main valve body water outlet has a lower flow channel to lead to auxiliary-valve in addition, and water intake is arranged on the lumen piston below of main valve body.Auxiliary-valve is made up of auxiliary valve body and secondary valve stamen, auxiliary valve body inner chamber upper, middle and lower have respectively three holes respectively with main valve body in, upper and lower runner communicates, the auxiliary valve body inner chamber is a piston cavity, and secondary valve stamen is made up of piston and piston rod, and the piston rod outer end is connected with active force mechanism.Outer application mechanism can be an electromagnet, also can be manual rod.
When the valve stamen of auxiliary-valve under the piston rod effect, when piston is pushed the bottom to, upper runner communicates with middle runner, this moment, liquid entered cavity between the valve gap that the main valve body cavity of resorption has been full of main valve stamen piston lower surface and main valve stamen bottom by water intake, entered the epicoele that upper runner is full of main valve by middle runner through auxiliary-valve again.This moment, main valve stamen down pressure was the product of piston upper surface and little annular upper surface of valve gap and high hydraulic pressure, this moment, the valve gap compression area only was an annulus, and the main valve stamen upwards pressure and is the area that matches with water outlet in the middle of the product of ring-like lower surface of piston and high hydraulic pressure and the valve gap low hydraulic pressure or the zero hydraulic pressure product with water outlet, so main valve stamen down pressure tightly is pressed in water outlet to the valve gap of main valve stamen greater than upward pressure, water does not circulate.When secondary valve stamen outside application mechanism move upward downwards, upper runner is communicated with lower flow channel, the epicoele of main valve body communicates with water outlet, pressure is released to low pressure or zero pressure, and runner is closed in this moment, make the stressed variation of main valve stamen, upward pressure and multiply by high hydraulic pressure for the big annulus area of piston lower surface, and the area that valve gap and water outlet coincide multiply by low hydraulic pressure or zero hydraulic pressure, prone pressure is that the area of piston upper-end surface multiply by low hydraulic pressure or zero hydraulic pressure and the little annulus area of valve gap and multiply by high hydraulic pressure, obviously, upward pressure, so the main valve stamen rises on the step hole of epicoele greater than downward pressure, valve gap is opened, water intake communicates with water outlet, reaches out the valve effect, needs only when closing once more secondary valve stamen is moved downward just and can go round and begin again.
Also can be made into rotary control mechanism as accompanying drawing 2 auxiliary-valves, form by auxiliary valve body and secondary valve stamen, secondary valve stamen is that the cylindrical body middle part has half slot, the cylindrical body upper end has round bar to be connected with the outer buttons rotation mechanism, cylinder is movingly in the chamber of auxiliary valve body, and auxiliary valve body has three holes corresponding to the half slot orientation of secondary valve stamen, respectively with main valve body in, upper and lower runner is communicated with.
When among accompanying drawing 2 figure during position, upper runner communicates with middle runner, and when secondary valve stamen inhour rotation 90 was spent, upper runner communicated with lower flow channel.
Claims (3)
1, a kind of pressure differential valve, comprise valve body and valve stamen, it is characterized in that valve is made up of main valve and auxiliary-valve, the body cavity of main valve has upper and lower cavity, the epicoele diameter is slightly little than cavity of resorption, the main valve stamen is installed in the cavity of resorption, main valve stamen top is piston, the middle part is the cylindrical body of diameter less than piston, the bottom be slightly larger in diameter in cylindrical valve gap, the main valve body epicoele has upper runner to lead to auxiliary-valve, cavity of resorption also has middle runner to lead to auxiliary-valve, the main valve body water outlet has a lower flow channel to lead to auxiliary-valve in addition, and water intake is arranged on the cavity of resorption piston below of main valve body.
2, a kind of pressure differential valve according to claim 1, it is characterized in that auxiliary-valve is made up of auxiliary valve body and secondary valve stamen, auxiliary valve body inner chamber upper, middle and lower have respectively three holes respectively with main valve body in, upper and lower runner communicates, the auxiliary valve body inner chamber is a piston cavity, secondary valve stamen is made up of piston and piston rod, and the piston rod outer end is connected with active force mechanism.
3, a kind of pressure differential valve according to claim 1, it is characterized in that auxiliary-valve and secondary valve stamen composition, secondary valve stamen is that the cylinder middle part has half slot, the cylindrical body upper end has round bar to be connected with the outer buttons rotation mechanism, cylinder is movingly in the chamber of auxiliary valve body, and auxiliary valve body has three holes corresponding to the half slot orientation of secondary valve stamen, respectively with main valve body in, upper and lower runner is communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98125478A CN1110640C (en) | 1998-12-11 | 1998-12-11 | Pressure differential valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98125478A CN1110640C (en) | 1998-12-11 | 1998-12-11 | Pressure differential valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1257168A true CN1257168A (en) | 2000-06-21 |
| CN1110640C CN1110640C (en) | 2003-06-04 |
Family
ID=5229191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98125478A Expired - Fee Related CN1110640C (en) | 1998-12-11 | 1998-12-11 | Pressure differential valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1110640C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311182C (en) * | 2001-05-16 | 2007-04-18 | Hih发展股份有限公司 | Servo control valve |
-
1998
- 1998-12-11 CN CN98125478A patent/CN1110640C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311182C (en) * | 2001-05-16 | 2007-04-18 | Hih发展股份有限公司 | Servo control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1110640C (en) | 2003-06-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AR01 | Abandonment of patent right to avoid double patenting |
According to article 9 of the patent law and article 13 of the detailed rules for the implementation of the patent law: 98125478 of the invention patents in the current issue of authorization announcement, and at the same time corresponding to the 98249579.X utility model patent to be given up, and in the 19 volume of the 23 issue of the new type of communique on the patent right to abandon the announcement. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |