CN203265195U - Low pressure-maintaining overflow and stopping unit for high-pressure jetting machines - Google Patents
Low pressure-maintaining overflow and stopping unit for high-pressure jetting machines Download PDFInfo
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- CN203265195U CN203265195U CN 201220630301 CN201220630301U CN203265195U CN 203265195 U CN203265195 U CN 203265195U CN 201220630301 CN201220630301 CN 201220630301 CN 201220630301 U CN201220630301 U CN 201220630301U CN 203265195 U CN203265195 U CN 203265195U
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- push rod
- spool
- valve pocket
- nut
- low pressure
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Abstract
The utility model relates to a low pressure-maintaining overflow and stopping unit for high-pressure jetting machines, which comprises a valve bush, a spool, a spring, a nut, a lifting rod, a push rod and a microswitch, the interior of the valve bush is provided with a step, one end of the spring is arranged on the step, the spool is inserted in the spring and the valve bush, one end of the spool is connected with one end of the lifting rod, the other end of the spool is extended out of the valve bush, moreover, the outer diameter of the part extended out of the valve bush is greater than the inner diameter of the valve bush, the other end of the lifting rod passes through the nut to be in contact with the push rod, the push rod is in contact with the microswitch, the outside of one end of the lifting rod connected with the spool is provided with a cylindrical surface, a seal ring is arranged on the cylindrical surface, and is located between the nut and the valve bush, the lifting rod is also provided with a tapered step, and the tapered step is located on one side of the cylindrical surface, which is close to the nut. When water pressure is overhigh to push the lifting rod and the spool to move, the unit starts to release pressure, the seal ring drops into the tapered step, a system keeps a low pressure-maintaining state, at the same time, the motion of the lifting rod triggers the microswitch to keep a state of cutting off the power, and thereby the effect of overflow and stopping is achieved.
Description
Technical field
The utility model relates to a kind of low pressure holding overflow arresting gear for jetting machine.
Background technology
Jetting machine generally comprises motor, high-pressure pump, high-voltage tube and high-pressure spray gun, and the work of driven by motor high-pressure pump produces high water pressure, and by high-voltage tube, high-pressure spray gun ejection, metope, vehicle etc. is carried out cleaning.Be typically provided with one " overflow-shutdown " device on high-pressure pump in jetting machine, automatically motor power cut off when high-pressure spray gun is closed, the purpose that reach energy efficient, extends service life of a machine, conveniently uses.Generally whether higher than operating pressure, " overflow-shutdown " device is divided into two types according to the pipeline residual pressure: a kind of is low pressure holding " overflow-shutdown " device, and after this device closes rifle, system residual pressure is lower than operating pressure; A kind of is high pressurize " overflow-shutdown " device, and after this device closes rifle, system residual pressure is pressed higher than work.General high pressurize " overflow-shutdown " device there is no technological difficulties, simultaneously also reliable in device design itself, but this device has following shortcoming because residual pressure is larger:
1. pipeline connects the easily breakage of sealing place sealing ring;
To high-voltage tube, high-pressure spray gun intensity require highly, cause cost to increase;
3. residual pressure produces hidden danger to personal security greatly.
And the structure of low pressure holding " overflow-shutdown " device is more complicated.
Therefore, how providing a kind of simple in structure, reliable in action, the low pressure holding overflow arresting gear that is used for jetting machine that cost is low is the technical problem that those skilled in the art need to be resolved hurrily.
The utility model content
The utility model provides a kind of low pressure holding overflow arresting gear for jetting machine, to solve the baroque problem of low pressure holding overflow arresting gear in prior art.
for solving the problems of the technologies described above, the utility model provides a kind of low pressure holding overflow arresting gear for jetting machine, comprise valve pocket, spool, spring, nut, push rod, push rod and microswitch, the inside of described valve pocket is provided with step, one end of described spring is by being located on described step, described spool is inserted in described spring and valve pocket, one end of described spool is connected with an end of described push rod, the other end of spool stretches out described valve pocket, and stretch out the external diameter of part of valve pocket greater than the internal diameter of described valve pocket, the other end of described push rod passes described nut and contacts with described push rod, described push rod contacts with described microswitch, the outside of the end that described push rod is connected with described spool is provided with a cylinder, a sheathed sealing ring on described cylinder, described sealing ring is between described nut and described valve pocket, also be provided with the tapering step on described push rod, described tapering step is positioned at described cylinder near described nut one side.
Preferably, described spool stretch out the part of described valve pocket and valve pocket both touching position be respectively the conical surface that is complementary.
Preferably, described push rod and described spool are threaded connection.
Preferably, also be provided with pad between an end of described spring and described valve pocket.
Preferably, the material of described valve pocket is POM or nylon.
compared with prior art, the utlity model has following advantage: the low pressure holding overflow arresting gear that is used for jetting machine that the utility model provides, comprise valve pocket, spool, spring, nut, push rod, push rod and microswitch, the inside of described valve pocket is provided with step, one end of described spring is by being located on described step, described spool is inserted in described spring and valve pocket, one end of described spool is connected with an end of described push rod, the other end of spool stretches out described valve pocket, and stretch out the external diameter of part of valve pocket greater than the internal diameter of described valve pocket, the other end of described push rod passes described nut and is fixedly connected with described push rod, described push rod contacts with described microswitch, the outside of the end that described push rod is connected with described spool is provided with a cylinder, a sheathed sealing ring on described cylinder, described sealing ring is between described nut and described valve pocket, also be provided with the tapering step on described push rod, described tapering step is positioned at described cylinder near described nut one side.when closing jetting machine, pressure in water pump raises, make described push rod and spool because thrust produces movement, the movement of described spool causes spool and valve pocket to disengage, reach the pressure release effect, simultaneously, described push rod and described sealing ring generation relative displacement, make described sealing ring fall into described tapering step place, like this, after pressure release is completed, described push rod is retracted rapidly again sealing ring is got back on described cylinder, make system keep the low pressure holding state, residual pressure makes the described push rod of described push rod promotion make described microswitch still be in off-position simultaneously, the effect that reaches not only overflow but also shut down.
Description of drawings
Fig. 1 is the structural representation of the low pressure holding overflow arresting gear that is used for jetting machine of the utility model one specific embodiment;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is the structural representation of the push rod of the utility model one specific embodiment.
In figure: 1-water inlet, 2-delivery port, 3-unloading channel, 10-valve pocket, 20-spool, the 21-conical surface, 30-spring, 31-pad, 40-nut, 41-through hole, 50-push rod, 51-cylinder, 52-tapering step, 60-push rod, 70-microswitch, 80-sealing ring.
The specific embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in detail.It should be noted that, the utility model accompanying drawing all adopts the form of simplification and all uses non-ratio accurately, only in order to convenient, the purpose of aid illustration the utility model embodiment lucidly.
The low pressure holding overflow arresting gear that is used for jetting machine that the utility model provides; please refer to Fig. 1; and in conjunction with Fig. 2 and Fig. 3; comprise valve pocket 10, spool 20, spring 30, nut 40, push rod 50, push rod 60 and microswitch 70; the inside of described valve pocket 10 is provided with step; one end of described spring 30 is by being located on described step; described spool 20 is inserted in described spring 30 and valve pocket 10; one end of described spool 20 is connected with an end of described push rod 50; particularly, described push rod 50 is threaded connection with described spool 20.The other end of spool 20 stretches out described valve pocket 10, and stretch out the external diameter of part of valve pocket 10 greater than the internal diameter of described valve pocket 10, the other end of described push rod 50 passes described nut 40 and contacts with described push rod 60, particularly, described valve pocket 10, spool 20, spring 30 and push rod 50 connect as one, and make spring 30 receive certain precompression, so that described spool 20 stretches out the part and described valve pocket 10 close contacts of described valve pocket 10, reach sealing effectiveness.Described push rod 60 contacts with described microswitch 70, the outside of the end that described push rod 50 is connected with described spool 20 is provided with a cylinder 51, a sheathed sealing ring 80 on described cylinder 51, described sealing ring 80 is between described nut 40 and described valve pocket 10, also be provided with tapering step 52 on described push rod 50, described tapering step 52 is positioned at described cylinder 51 near described nut 40 1 sides.during normal operation, water flows to delivery port 2 from water inlet 1, and penetrate from spray gun, described sealing ring 80 is sheathed on the cylinder 51 of described push rod 50, when closing rifle, delivery port 2 and unloading channel 3 can produce instantaneous pressure, this pressure is around the through hole 41 on described nut 40 enters described push rod 50, promote the elastic force motion that described push rod 50 and spool 20 overcome spring 30, the movement of described spool 20 causes spool 20 and valve pocket 10 to disengage, the beginning pressure release, described push rod 50 disconnects microswitch 70 by described push rod 60, the cutting system power supply, simultaneously, relative displacement occurs with described sealing ring 80 in described push rod 50, make described sealing ring 80 fall into described tapering step 52 places, make the pressurize district, it is the regional moment pressure release that unloading channel 3 connects, and maintenance low pressure holding state, at this moment, system residual pressure is lower than operating pressure, this pressure makes described push rod 50 make microswitch 70 keep the state of outage by described push rod 60, the effect that reaches not only overflow but also shut down.When again shooting, due to the pressure drop of delivery port 2, unloading channel 3, push rod 50 and spool 20 restPose under the effect of spring 30, and described sealing ring 80 is also got back to cylinder 51 places.
Preferably, please continue with reference to figure 1 and Fig. 2, described spool 20 stretch out the part of described valve pocket 10 and valve pocket 10 both touching position be respectively the conical surface 21 that is complementary, be conducive to the sealing between spool 20 and valve pocket 10.
Preferably, please continue with reference to figure 1, also be provided with pad 31 between an end of described spring 30 and described valve pocket 10, in order to regulate the pressure of described spring 30, that is to say, when the limiting value that needs pressure release changes, only need to regulate described pad 31 and get final product.
Preferably, the material of described valve pocket 10 is the POM(polyformaldehyde, Poly oxy methylene) or nylon (Nylon English full name:, being commonly called as of Fypro, English name: Polyamide), described POM has good physics, machinery and chemical property, excellent crocking resistance is especially arranged, and described nylon also has good rub resistance.
in sum, the low pressure holding overflow arresting gear that is used for jetting machine that the utility model provides, comprise valve pocket 10, spool 20, spring 30, nut 40, push rod 50, push rod 60 and microswitch 70, the inside of described valve pocket 10 is provided with step, one end of described spring 30 is by being located on described step, described spool 20 is inserted in described spring 30 and valve pocket 10, one end of described spool 20 is connected with an end of described push rod 50, the other end of spool 20 stretches out described valve pocket 10, and stretch out the external diameter of part of valve pocket 10 greater than the internal diameter of described valve pocket 10, the other end of described push rod 50 passes described nut 30 and contacts with described push rod 60, described push rod 60 contacts with described microswitch 70, the outside of the end that described push rod 50 is connected with described spool 20 is provided with a cylinder 51, a sheathed sealing ring 80 on described cylinder 51, described sealing ring 80 is between described nut 40 and described valve pocket 10, also be provided with tapering step 52 on described push rod 50, described tapering step 52 is positioned at described cylinder 51 near described nut 40 1 sides.when closing jetting machine, pressure in water pump raises, make described push rod 50 and spool 20 because thrust produces movement, the movement of described spool 20 causes spool 20 and valve pocket 10 to disengage, reach the pressure release effect, described push rod 50 disconnects microswitch 70 by described push rod 60, the cutting system power supply, simultaneously, relative displacement occurs with described sealing ring 80 in described push rod 50, make described sealing ring 80 fall into described tapering step 52 places, like this, after pressure release is completed, described push rod 50 is retracted rapidly again sealing ring 80 is got back on described cylinder 51, make system keep the low pressure holding state, residual pressure makes the described push rod 50 described push rods 60 of promotion make described microswitch 70 be in dissengaged positions, reach the effect that overflow is shut down.
Obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model utility model.Like this, if within of the present utility model these were revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also was intended to comprise these change and modification.
Claims (5)
1. low pressure holding overflow arresting gear that is used for jetting machine, comprise valve pocket, spool, spring, nut, push rod, push rod and microswitch, the inside of described valve pocket is provided with step, one end of described spring is by being located on described step, described spool is inserted in described spring and valve pocket, one end of described spool is connected with an end of described push rod, the other end of spool stretches out described valve pocket, and stretch out the external diameter of part of valve pocket greater than the internal diameter of described valve pocket, the other end of described push rod passes described nut and contacts with described push rod, described push rod contacts with described microswitch, it is characterized in that, the outside of the end that described push rod is connected with described spool is provided with a cylinder, a sheathed sealing ring on described cylinder, described sealing ring is between described nut and described valve pocket, also be provided with the tapering step on described push rod, described tapering step is positioned at described cylinder near described nut one side.
2. the low pressure holding overflow arresting gear for jetting machine as claimed in claim 1, is characterized in that, described spool stretch out the part of described valve pocket and valve pocket both touching position be respectively the conical surface that is complementary.
3. the low pressure holding overflow arresting gear for jetting machine as claimed in claim 1, is characterized in that, described push rod and described spool are threaded connection.
4. the low pressure holding overflow arresting gear for jetting machine as claimed in claim 1, is characterized in that, also is provided with pad between an end of described spring and described valve pocket.
5. the low pressure holding overflow arresting gear for jetting machine as claimed in claim 1, is characterized in that, the material of described valve pocket is POM or nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220630301 CN203265195U (en) | 2012-11-23 | 2012-11-23 | Low pressure-maintaining overflow and stopping unit for high-pressure jetting machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220630301 CN203265195U (en) | 2012-11-23 | 2012-11-23 | Low pressure-maintaining overflow and stopping unit for high-pressure jetting machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203265195U true CN203265195U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220630301 Expired - Fee Related CN203265195U (en) | 2012-11-23 | 2012-11-23 | Low pressure-maintaining overflow and stopping unit for high-pressure jetting machines |
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| CN (1) | CN203265195U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989734A (en) * | 2012-11-23 | 2013-03-27 | 上海亿力电器有限公司 | Low pressure maintaining and overflow stop apparatus for high pressure washer |
-
2012
- 2012-11-23 CN CN 201220630301 patent/CN203265195U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989734A (en) * | 2012-11-23 | 2013-03-27 | 上海亿力电器有限公司 | Low pressure maintaining and overflow stop apparatus for high pressure washer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170428 Address after: Zhejiang province Jiashan County Luoxing street scenery Road No. 111 Patentee after: ZHEJIANG YILI CLEANING EQUIPMENT CO., LTD. Address before: Xiangyang Road Minhang District town Shanghai City No. 1358 201108 Patentee before: Shanghai Yili Electric Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20171123 |