CN2141480Y - Balance type pedal reversal valve - Google Patents
Balance type pedal reversal valve Download PDFInfo
- Publication number
- CN2141480Y CN2141480Y CN 92216957 CN92216957U CN2141480Y CN 2141480 Y CN2141480 Y CN 2141480Y CN 92216957 CN92216957 CN 92216957 CN 92216957 U CN92216957 U CN 92216957U CN 2141480 Y CN2141480 Y CN 2141480Y
- Authority
- CN
- China
- Prior art keywords
- water
- equivalent
- valve
- backwater
- spray orifice
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000007921 spray Substances 0.000 claims description 18
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000011086 high cleaning Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 210000000038 chest Anatomy 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The utility model relates to a balance type foot pedal reversal valve for a high-pressure water-jet flow cleaner, comprising a water inlet cavity, one valve body of a water outlet cavity, a valve seat which is provided with a backwater cavity, and a valve core which is controlled by a pedal, wherein, equivalent water outlet jet holes and equivalent backwater jet holes are arranged on the sealing section of the cylindrical surface of the valve core along a radial direction; the upper and the lower ends of the shoulder of the valve core are of conical surface structures. The utility model has the advantages of stable and reliable operation, no pressure impact, high cleaning efficiency, and energy saving, and has the advantage that the service life of the hydraulic system of the high-pressure water-jet flow cleaner is extended.
Description
The utility model relates to a kind of hydrovalve, especially for the foot-operated selector valve of the balanced type of high pressure water-jet cleaner.
The foot control valve of existing high pressure water-jet cleaner Control work nozzle, all adopt one-way valve to make to open and close the switch of control nozzle, one-way valve is when opening state, the high pressure water of the high-pressure service pump output of high pressure water-jet cleaner is by the pressure release of work nozzle, when from opening state when closed condition is changed, one-way valve forces the high pressure water of high-pressure service pump output through the relief valve recovery tank, cause relief valve pressure to rise or be periodicity (0-set pressure) pulsing, make the whole hydraulic system pressure instability of high pressure water-jet cleaner, each parts of hydraulic system are because the compression shock that one-way valve causes, shorten working life, reduced cleaning efficiency.
The purpose of this utility model provides the foot-operated selector valve of a kind of balanced type, the selector valve that it could eliminate or alleviate water jet washing machine Control work nozzle causes the pressure surge of hydraulic system when the conversion work state, improve the sealing of valve, prolong the working life of hydraulic system, improve cleaning efficiency.
The purpose of this utility model is achieved in that this device comprises the spool of the valve body that water-inlet cavity, water chamber are housed, the valve seat that backwater cavity is housed, foot treadle control, wherein radially open equivalent water outlet spray orifice and equivalent backwater spray orifice on spool cylinder seal section, the upper and lower end of spool land adopts cone structure.
Because the utility model radially adopts equivalent water outlet spray orifice and equivalent backwater spray orifice and conical surface shoulder at spool, so it can eliminate the valve internal leakage, the pressure loss is little.Be applied in the control of high pressure water-jet cleaner work nozzle, make its hydraulic work system reliable and stable, eliminate compression shock, improved the working life of high pressure water-jet cleaner hydraulic system, simultaneously, a washing machine can be installed the foot-operated selector valve of two above balanced types simultaneously, has improved cleaning efficiency, has saved the energy.
Fig. 1 is a kind of concrete structure schematic representation of the utility model opening state.
Below in conjunction with Fig. 1 the utility model is described in further detail.
Foot treadle 1 depresses, push rod 2 compresses push rod stage clip 3, spool 8 is displaced downwardly to the intake tunnel 7 in it is connected water chamber 5 and water-inlet cavity 10, backwater cavity 13 is closed, high pressure water enters water chamber 5 through water-inlet cavity 10, intake tunnel 7, by the work nozzle pressure release of washing machine, this moment, selector valve was in opening state (as shown in Figure 1).When foot treadle 1 lifts, push rod stage clip 3 and spool stage clip 14 reset, and move on the spool 8, water chamber 5 is closed, water-inlet cavity 10 is connected with equivalent backwater spray orifice 11, and high pressure water passes through 11 pressure releases of equivalent backwater spray orifice to backwater cavity 13 through water-inlet cavity 10, and this moment, selector valve was in closed condition.If selector valve is when opening the transition state that conversion closes, move on the spool 8, the water outlet 18 of intake tunnel 7 enters the cylinder seal section, water chamber 5 is all connected with equivalent water outlet spray orifice 6, high pressure water exports spray orifice 6 pressure releases to water chamber 5 through water-inlet cavity 10 and intake tunnel 7 by equivalent, flow out through the work nozzle again, spool 8 moves on again, equivalent water outlet spray orifice 6 and equivalent backwater spray orifice 11 equivalent are closed and are opened, guarantee that selector valve is constant at transfer process mesohigh water pressure release state, transfer process finishes, equivalent water outlet spray orifice 6 contract fullys, water-inlet cavity 10 seals by spool land upper end cone structure with water outlet thorax 5, and equivalent backwater spray orifice 11 is connected entirely with water-inlet cavity 10, and high pressure water flows in the water tank through equivalent backwater spray orifice 11 pressure releases to backwater cavity 13.Selector valve is when cutting out the transition state that conversion opens, and working principle is the same.This shows, introduce equivalent water outlet spray orifice 6 and equivalent backwater nozzle 11 structures, when having guaranteed that valve is changed in working order, the pressure stability of high pressure water.
Claims (2)
1, a kind of foot-operated selector valve of balanced type that is used for high pressure water-jet cleaner, the spool that comprises the valve body that water-inlet cavity, water chamber are housed, the valve seat that backwater cavity is housed, foot treadle control, it is characterized in that radially opening on spool cylinder seal section equivalent water outlet spray orifice and equivalent backwater spray orifice, the upper and lower end of spool land adopts cone structure.
2, selector valve according to claim 1 is characterized in that equivalent backwater spray orifice and equivalent water outlet spray orifice at least respectively have one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92216957 CN2141480Y (en) | 1992-09-08 | 1992-09-08 | Balance type pedal reversal valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92216957 CN2141480Y (en) | 1992-09-08 | 1992-09-08 | Balance type pedal reversal valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2141480Y true CN2141480Y (en) | 1993-09-01 |
Family
ID=33764984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92216957 Expired - Fee Related CN2141480Y (en) | 1992-09-08 | 1992-09-08 | Balance type pedal reversal valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2141480Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817677A (en) * | 2012-08-30 | 2012-12-12 | 无锡市凯龙汽车设备制造有限公司 | Secondary cylindrical surface sealing structure of metering nozzle |
| CN102828807A (en) * | 2012-08-30 | 2012-12-19 | 无锡市凯龙汽车设备制造有限公司 | Metering nozzle structure provided with accommodating chamber and used for automobile tail gas processing system |
-
1992
- 1992-09-08 CN CN 92216957 patent/CN2141480Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817677A (en) * | 2012-08-30 | 2012-12-12 | 无锡市凯龙汽车设备制造有限公司 | Secondary cylindrical surface sealing structure of metering nozzle |
| CN102828807A (en) * | 2012-08-30 | 2012-12-19 | 无锡市凯龙汽车设备制造有限公司 | Metering nozzle structure provided with accommodating chamber and used for automobile tail gas processing system |
| CN102817677B (en) * | 2012-08-30 | 2015-12-16 | 凯龙高科技股份有限公司 | A kind of measuring jet two stage column surface seal structure |
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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 |