CN2302381Y - Ultra-high pressure pedal on-off valve - Google Patents
Ultra-high pressure pedal on-off valve Download PDFInfo
- Publication number
- CN2302381Y CN2302381Y CN 96223459 CN96223459U CN2302381Y CN 2302381 Y CN2302381 Y CN 2302381Y CN 96223459 CN96223459 CN 96223459 CN 96223459 U CN96223459 U CN 96223459U CN 2302381 Y CN2302381 Y CN 2302381Y
- Authority
- CN
- China
- Prior art keywords
- valve
- cavity
- pressure liquid
- highly pressurised
- spool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model relates to a stop valve for high-pressure liquid pump output, comprising a valve seat, the inlet and the outlet of the high-pressure liquid of the valve, a cylindrical main valve core, a valve core sleeve and the valve closing resetting device of the main valve core. The main valve core is slid in the valve core sleeve for blocking or communicating the inlet and the outlet of the valve. The valve is characterized in that a valve core push rod which is communicated with the valve core or is fixed with the valve core is additionally arranged on the valve, and a cavity is formed between the other end of the valve core push rod and the valve seat. The cavity is communicated with the high-pressure liquid cavity which is on the high-pressure liquid inlet part of the valve through a small hole, the cavity passes to the external channel of the valve on the corresponding position of the valve, and the other opening and closing valve core is arranged on the channel on which the cavity and the valve is communicated. The opening and closing force is reduced by the valve to make the control of high-pressure liquid pump output reach an easy situation, and the use of high-pressure liquid pumps is very convenient.
Description
The utility model relates to the output stop valve of pressure liquid pump highly pressurised liquid.
Be used for cleaning, the pressure liquid pump that uses on scale removal and other engineering can be exported the liquid of hundreds of kilograms of pressure, high even reach hyperpressure more than 1000 kilograms, the pressure liquid pump of some specification (also claiming the high-pressure wash pump) has suitable flow (as the per minute flow more than 50 liters), pipeline and spray gun just have certain sectional area, pressure is big more, flow is bigger, the output stop valve just more needs big valve opening force, the output switch valve of existing pressure liquid pump at 300-700 kilogram pressure is because valve opening force is excessive, the normal lever that uses is foot-operated, with bigger valve opening force in order to be passed to spool.Yet this structure of directly driving valve is because valve opening force is excessive, like the limit that has arrived switch valve, still needs the very big strength could switch valve, makes troubles to use.
It is easy that the utility model purpose provides a kind of switch valve, the switch valve that is used for pressure liquid pump highly pressurised liquid break-make easy to use.
Technical solution of the present utility model is: a kind of pressure liquid pump output switch valve, comprise valve block, the highly pressurised liquid of valve is imported and exported, cylindricality main valve plug and valve core housing, main valve plug closes compositions such as valve resetting means, main valve plug slides in valve core housing, be used to intercept or the import and export of connecting valve, it is characterized in that being provided with in addition with spool and contact or affixed spool push rod, form a cavity between the other end of spool push rod and the valve seat, this cavity is connected with the highly pressurised liquid inlet high pressure sap cavity of valve through an aperture, this cavity is provided with towards the valve body external chennel, is provided with another break-make spool on the passage that is communicated with outside cavity and valve body.The aperture of cavity upper valve core aperture is 2-6mm.
Working mechanism of the present utility model such as following: exuberant highly pressurised liquid in the cavity that forms between spool push rod and valve body, when the conducting of break-make spool, the liquid of cavity flows out outside the valve by overflow hole, be unlikely to produce big pressure at spool, and when the break-make spool turn-offs, the cavity internal pressure raises gradually, act on push rod and promote main valve plug, main valve plug is pushed into then highly pressurised liquid output of conduction position, and when the conducting of break-make spool, the cavity internal pressure lowers, and push rod does not have thrust output, then main valve plug resets under the resetting means effect, and the high pressure liquid pump stops output.The Returnning spring on main valve plug that described resetting means can be used always.
Characteristics of the present utility model are: owing to adopt the switch of overflow hole on-off valve to introduce or close the effect of the high pressure of highly pressurised liquid to spool push rod and main valve plug, lowered the strength of switch valve greatly, make to high pressure liquid pump output control reach freely condition, the use of high pressure liquid pump is very convenient.
The utility model is described in further detail below in conjunction with accompanying drawing with by embodiment:
Fig. 1 is the utility model structural representation
Fig. 2 is Fig. 1 outward appearance schematic top plan view
Among Fig. 1,2, the inlet 32 of highly pressurised liquid and outlet 29 are on two faces of valve body, and overflow hole 31 is that the other end and 19 of the valve bodies of spool push rod 12 forms cavity towards the outer hole of valve.
As shown in Figure 1, 2, valve body is installed on the base plate 27, and cylindricality main valve plug 24 slides in guiding swivel nut 26 and spool guide pin bushing 21, and at shown position, outlet 29 is ended by main valve plug, and main valve plug moves to left when leading the swivel nut end, the valve conducting.Push rod 12 can or contact with the main valve plug Joint, for easy to assembly, the two non-affixed can be separately better, on spool push rod 12, establish the aperture 9 of 0.8-1.2mm (during 100Mpa) and be communicated with inlet's highly pressurised liquid of valve, form a cavity 33 at the other end and the valve body of push rod.Cavity is communicated to overflow hole 31, is ball valve core or steel ball ball core at the set break-make spool 6 of this through hole, establishes the depression bar 4 to the ball location on the ball, and the end that contacts with ball of depression bar is provided with corresponding cave, and depression bar places in the depression bar swivel nut 5.Overflow hole 31 on-off valves can be made into foot-operated stop valve, promptly at the end of depression bar 4 touching position pedal 1 are housed, and pedal moves around straight pin, and all the other embodiments can be the spools of ball valve, cone valve, flapper valve, and these all do not exceed scope of the present utility model.
The highly pressurised liquid output stop valve main valve plug that pressure is very high also needs bigger pass valve power when closing valve, close the valve resetting means and can be provided with Returnning spring 25 in the other end of main valve plug, close the valve resetting means and also can adopt the high pressure liquid chamber, promptly have the through hole of 2-3mm from main valve plug, be communicated with the cavity of guiding swivel nut formation in the valve body in the end, the aperture ingress of main valve plug also is connected with valve inlet high pressure sap cavity, and then the high pressure sap cavity of main valve plug forms the valve power of closing.Because the pressure (valve opening force) that main valve plug push rod end high pressure sap cavity forms is then carried out opening and closing of valve easily greater than the pressure that forms in the main valve plug end portion cavity (closing valve power).
Main valve plug end Returnning spring and high pressure sap cavity are combined into the good embodiment that resetting means also is a resetting means.
The high pressure sap cavity of switch valve is communicated with aperture with inlet high pressure sap cavity also different structure, for example can open on valve body.
Give the attachment screw of valve body and base plate among Fig. 2 in addition, overflow hole break-make valve seat 7, the O-ring seals of spool, push rod, back-up ring 30,22,23,15,16,17,18,10,11,13,14,2,3,8 etc.20 is the outer ring of guide pin bushing, and 25 is the Returnning spring of main valve plug.
Claims (6)
1. the pedal type switch valve of a pressure liquid pump highly pressurised liquid, comprise valve block (27), the highly pressurised liquid of valve imports and exports (32,29), cylindricality main valve plug (24) and valve core housing (26), main valve plug closes valve resetting means compositions such as (25), main valve plug slides in valve core housing, be used to intercept or the import and export of connecting valve, it is characterized in that being provided with in addition with spool and contact or affixed spool push rod (12), form a cavity (33) between the other end of spool push rod and the valve seat, this cavity is connected with the highly pressurised liquid inlet high pressure sap cavity of valve through an aperture (9), this cavity is provided with towards the valve body external chennel, is provided with another break-make spool (6) on the passage that is communicated with outside cavity and valve body.
2. by the pedal type switch valve of the described pressure liquid pump highly pressurised liquid of claim 1, it is characterized in that the on-off valve spool that the outer passage of connecting of described cavity and valve body is provided with is the steel ball ball, ball is provided with the depression bar that there is corresponding depression the end.
3. by the pedal type switch valve of claim 1,2 described pressure liquid pump highly pressurised liquids, it is characterized in that described break-make spool is ball valve, poppet valve core.
4. by the pedal type switch valve of claim 1,2 described pressure liquid pump highly pressurised liquids, the resetting means that it is characterized in that described main valve plug is for being provided with Returnning spring (25) in the other end of main valve plug.
5. by the pedal type switch valve of the described pressure liquid pump highly pressurised liquid of claim 1, the aperture on the cavity that it is characterized in that forming between the other end of described spool push rod and the valve seat is for establishing the aperture (9) of 0.8-1.2mm (during 100Mpa) on spool push rod (12).
6. by the pedal type switch valve of claim 1,2 described pressure liquid pump highly pressurised liquids, it is characterized in that described on-off valve can be made into the pedal type switch valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96223459 CN2302381Y (en) | 1996-08-19 | 1996-08-19 | Ultra-high pressure pedal on-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96223459 CN2302381Y (en) | 1996-08-19 | 1996-08-19 | Ultra-high pressure pedal on-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2302381Y true CN2302381Y (en) | 1998-12-30 |
Family
ID=33902680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96223459 Expired - Fee Related CN2302381Y (en) | 1996-08-19 | 1996-08-19 | Ultra-high pressure pedal on-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2302381Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588668A (en) * | 2012-02-08 | 2012-07-18 | 成都力锋清洗机股份有限公司 | Novel foot valve |
-
1996
- 1996-08-19 CN CN 96223459 patent/CN2302381Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588668A (en) * | 2012-02-08 | 2012-07-18 | 成都力锋清洗机股份有限公司 | Novel foot valve |
| CN102588668B (en) * | 2012-02-08 | 2013-06-26 | 成都力锋清洗机股份有限公司 | Novel foot valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |