CN204828132U - Hydraulic pressure overflow return circuit and hydraulic pressure grouting pump - Google Patents
Hydraulic pressure overflow return circuit and hydraulic pressure grouting pump Download PDFInfo
- Publication number
- CN204828132U CN204828132U CN201520546410.6U CN201520546410U CN204828132U CN 204828132 U CN204828132 U CN 204828132U CN 201520546410 U CN201520546410 U CN 201520546410U CN 204828132 U CN204828132 U CN 204828132U
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- valve
- pressure
- pilot operated
- compound relief
- 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
- 150000001875 compounds Chemical class 0.000 claims abstract description 51
- 239000000945 filler Substances 0.000 claims description 20
- 239000002002 slurry Substances 0.000 claims description 19
- 239000007788 liquid Substances 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 8
- 230000007257 malfunction Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model provides a hydraulic pressure overflow return circuit and hydraulic pressure grouting pump, include: pilot operated compound relief valve and direct action type overflow valve, pilot operated compound relief valve's the oil inlet and the oil inlet of direct action type overflow valve all with hydraulic system's work oil circuit intercommunication, pilot operated compound relief valve's oil -out and the oil -out of direct action type overflow valve all communicate with hydraulic system's work oil return, the controlled pressure of direct action type overflow valve is greater than pilot operated compound relief valve's the biggest controlled pressure, and the controlled pressure of direct action type overflow valve is less than hydraulic system's maximum working pressure. The utility model provides a hydraulic pressure overflow return circuit and hydraulic pressure grouting pump can restrict the top pressure of hydraulic pressure grouting pump work, avoids pilot operated compound relief valve normally to work and causes hydraulic cylinder or the fried potential safety hazard of splitting of thick liquid jar.
Description
Technical field
The utility model relates to technical field of hydraulic, particularly relates to a kind of hydraulic overflow loop and hydraulic grouting pump.
Background technique
Hydraulic grouting pump is the capital equipment of down-hole drilling hole-sealing grouting, it provides power source with conventional hydraulic drill rig, grouting pressure scope wide (0 ~ 10MPa), the application of hydraulic grouting pump significantly reduces the labor intensity of drilling and sealing personnel, achieves continuous mechanized operation.
Hydraulic grouting pump is primarily of slurry cylinder, hydraulic jack, selector valve and hydraulic overflow loop composition, existing a kind of hydraulic overflow loop comprises pilot operated compound relief valve, the filler opening of pilot operated compound relief valve is communicated with the working oil path of hydraulic system, and the return opening of pilot operated compound relief valve is communicated with the work oil return of hydraulic system.Pilot operated compound relief valve is for regulating and the working pressure of hydraulic control system, play safety valve function, the working principle of hydraulic grouting pump is: the high-voltage oil liquid that hydraulic drill rig provides is through the filler opening of the working oil path arrival pilot operated compound relief valve of hydraulic system, then carry out after pressure is adjusted to normal working pressure through pilot operated compound relief valve, make hydraulic jack reciprocating by selector valve, and then the suction of slurry cylinder is starched, reach the effect of draining, slip casting.
The valve inner structure of pilot operated compound relief valve is comparatively accurate, easy blocking or occur the problems such as pilot valve spool jam, and make pilot operated compound relief valve lose safety valve function further, now the working pressure of hydraulic grouting pump is the pressure (can reach more than 22MPa) that rig provides, slurry cylinder can be made to build the pressure, hydraulic jack or slurry cylinder can be caused time serious to burst, there is larger potential safety hazard.
Model utility content
For prior art defect, the utility model provides a kind of hydraulic overflow loop and hydraulic grouting pump, can limit the maximum pressure of hydraulic grouting pump work, avoids pilot operated compound relief valve cisco unity malfunction to cause hydraulic jack or the potential safety hazard that bursts of slurry cylinder.
First aspect, the utility model provides a kind of hydraulic overflow loop, comprising:
Pilot operated compound relief valve and direct-acting overflow valve, the filler opening of described pilot operated compound relief valve is all communicated with the working oil path of hydraulic system with the filler opening of described direct-acting overflow valve, the oil outlet of described pilot operated compound relief valve is all communicated with the work oil return of described hydraulic system with the oil outlet of described direct-acting overflow valve, the pilot pressure of described direct-acting overflow valve is greater than the maximum pilot pressure of described pilot operated compound relief valve, and the pilot pressure of described direct-acting overflow valve is less than the maximum service pressure of hydraulic system.
Further, also comprise:
One-way valve, described one-way valve one end is communicated with the working oil path of described hydraulic system, and one end is communicated with the work oil return of described hydraulic system.
Further, the logical oil of described one-way valve one direction, oppositely ends.
Further, the pilot pressure of described direct-acting overflow valve is greater than 10MPa.
Second aspect, the invention provides a kind of hydraulic grouting pump, comprises the hydraulic overflow loop described in above-mentioned first aspect, hydraulic jack, selector valve and slurry cylinder.
The hydraulic overflow loop that the utility model provides and hydraulic grouting pump, by pilot operated compound relief valve and direct-acting overflow valve jointly as safety valve, the pilot pressure presetting direct-acting overflow valve is greater than the maximum pilot pressure of pilot operated compound relief valve, and the pilot pressure of direct-acting overflow valve is less than the maximum service pressure of hydraulic system, no matter whether pilot operated compound relief valve is intact, the pressure that rig provides is much, the Maximum operating pressure of hydraulic grouting pump can not exceed the maximum pressure of direct-acting overflow valve setting, therefore one deck safety protection that made hydraulic grouting pump many, pilot operated compound relief valve cisco unity malfunction can be avoided to cause hydraulic jack or the potential safety hazard that bursts of slurry cylinder.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model hydraulic overflow loop embodiment one;
Fig. 2 is the schematic diagram of the utility model hydraulic overflow loop embodiment two;
Fig. 3 is the fundamental diagram of the utility model hydraulic grouting pump embodiment one;
Fig. 4 is the fundamental diagram of the utility model hydraulic grouting pump embodiment two.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model, technological scheme in the utility model is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the schematic diagram of the utility model hydraulic overflow loop embodiment one, as shown in Figure 1, the hydraulic overflow loop of the present embodiment comprises: pilot operated compound relief valve 1 and direct-acting overflow valve 2, the filler opening of pilot operated compound relief valve 1 is all communicated with the working oil path of hydraulic system with the filler opening of direct-acting overflow valve 2, the oil outlet of pilot operated compound relief valve 1 is all communicated with the work oil return of hydraulic system with the oil outlet of direct-acting overflow valve 2, the pilot pressure of direct-acting overflow valve 2 is greater than the maximum pilot pressure of pilot operated compound relief valve 1, and the pilot pressure of direct-acting overflow valve 2 is less than the maximum service pressure of hydraulic system.Pilot operated compound relief valve 1 and direct-acting overflow valve 2 are relation in parallel, and it should be noted that, direct-acting overflow valve 2 can adopt any one direct-acting overflow valve existing.
The working principle of hydraulic overflow loop of the present utility model is specially: direct-acting overflow valve 2 presets the maximum pressure of a hydraulic grouting pump job, the pressure preset is greater than the maximum pilot pressure of pilot operated compound relief valve 1, the high-voltage oil liquid that hydraulic drill rig provides is after the working oil path of hydraulic system arrives the filler opening of pilot operated compound relief valve 1 and the filler opening of direct-acting overflow valve 2, if pilot operated compound relief valve 1 normally works, high-voltage oil liquid carries out pressure through pilot operated compound relief valve 1 and is adjusted to normal working pressure, if pilot operated compound relief valve 1 cisco unity malfunction, high-voltage oil liquid carries out through direct-acting overflow valve 2 maximum pressure that pressure is adjusted to hydraulic grouting pump work, therefore, no matter whether pilot operated compound relief valve 1 is intact, the pressure that rig provides is much, the Maximum operating pressure of hydraulic grouting pump can not exceed the maximum pressure (more than 10MPa) of direct-acting overflow valve 2 setting, therefore one deck safety protection that made hydraulic grouting pump many, pilot operated compound relief valve 1 cisco unity malfunction can be avoided to cause hydraulic jack or the potential safety hazard that bursts of slurry cylinder.
Further, also there is a defect in existing hydraulic overflow loop, when reality uses, misoperation when if workman connects hydraulic grouting pump filler opening, return opening oil pipe anti-or reversing valve operated, the former return opening of hydraulic grouting pump becomes filler opening, and now all safety valve groups are all inoperative, the working pressure of hydraulic grouting pump is the pressure (can reach more than 22MPa) that rig provides, slurry cylinder can be made to build the pressure, slurry cylinder or hydraulic jack can be caused time serious to burst, there is larger potential safety hazard.For solving this problem, the utility model also provides a kind of hydraulic overflow loop.
Fig. 2 is the schematic diagram of the utility model hydraulic overflow loop embodiment two, as shown in Figure 2, the hydraulic overflow loop of the present embodiment is on the basis shown in Fig. 2, also comprise one-way valve 3, one-way valve 3 one end is communicated with the working oil path of hydraulic system, one end is communicated with the work oil return of hydraulic system, and the logical oil of one-way valve one direction, oppositely ends.The working principle of the hydraulic overflow loop of the present embodiment is: when high-voltage oil liquid flows to correct, one-way valve is inoperative, when oil-feed anisotropy, one-way valve opens, fluid is turned back to the oil return system of rig, avoids hydraulic grouting pump filler opening, the return opening oil pipe slurry cylinder that misoperation causes when connecing anti-or reversing valve operated or the potential safety hazard that oil cylinder bursts.
The utility model also provides a kind of hydraulic grouting pump, comprises the hydraulic overflow loop shown in Fig. 1, hydraulic jack, selector valve and slurry cylinder.Fig. 3 is the fundamental diagram of the utility model hydraulic grouting pump embodiment one, as shown in Figure 3, the high-voltage oil liquid that hydraulic drill rig provides arrives the filler opening of pilot operated compound relief valve 1 and the filler opening of direct-acting overflow valve 2 through the working oil path of hydraulic system, then carry out after pressure is adjusted to normal working pressure through pilot operated compound relief valve 1 or direct-acting overflow valve 2, make hydraulic jack 4 reciprocating by selector valve 5, and then the suction of slurry cylinder is starched, reach the effect of draining, slip casting.Direct-acting overflow valve 2 presets the maximum pressure of a hydraulic grouting pump job, the pressure preset is greater than the maximum pilot pressure of pilot operated compound relief valve 1, the high-voltage oil liquid that hydraulic drill rig provides is after the working oil path of hydraulic system arrives the filler opening of pilot operated compound relief valve 1 and the filler opening of direct-acting overflow valve 2, if pilot operated compound relief valve 1 normally works, high-voltage oil liquid carries out pressure through pilot operated compound relief valve 1 and is adjusted to normal working pressure, if pilot operated compound relief valve 1 cisco unity malfunction, high-voltage oil liquid carries out through direct-acting overflow valve 2 maximum pressure that pressure is adjusted to hydraulic grouting pump work, therefore, no matter whether pilot operated compound relief valve is intact, the pressure that rig provides is much, the Maximum operating pressure of hydraulic grouting pump can not exceed the maximum pressure (more than 10MPa) of direct-acting overflow valve 2 setting, therefore one deck safety protection that made hydraulic grouting pump many, pilot operated compound relief valve cisco unity malfunction can be avoided to cause hydraulic jack or the potential safety hazard that bursts of slurry cylinder.
The utility model also provides a kind of hydraulic grouting pump, comprises the hydraulic overflow loop shown in Fig. 2, hydraulic jack, selector valve and slurry cylinder.Fig. 4 is the fundamental diagram of the utility model hydraulic grouting pump embodiment two, as shown in Figure 4, the high-voltage oil liquid that hydraulic drill rig provides arrives the filler opening of pilot operated compound relief valve and the filler opening of direct-acting overflow valve 2 through the working oil path of hydraulic system, then carry out after pressure is adjusted to normal working pressure through pilot operated compound relief valve 1 or direct-acting overflow valve 2, make hydraulic jack 4 reciprocating by selector valve 5, and then the suction of slurry cylinder is starched, reach the effect of draining, slip casting.No matter whether pilot operated compound relief valve is intact; the pressure that rig provides is much; the Maximum operating pressure of hydraulic grouting pump can not exceed the maximum pressure (more than 10MPa) of direct-acting overflow valve setting; therefore one deck safety protection that made hydraulic grouting pump many, potential safety hazard pilot operated compound relief valve cisco unity malfunction can being avoided to cause hydraulic jack or slurry cylinder burst.And, when high-voltage oil liquid flows to correct, one-way valve 3 is inoperative, when oil-feed anisotropy, one-way valve 3 is opened, fluid is turned back to the oil return system of rig, also can avoid hydraulic grouting pump filler opening, the return opening oil pipe slurry cylinder that misoperation causes when connecing anti-or reversing valve operated or the potential safety hazard that oil cylinder bursts.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristics; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment's technological scheme of the utility model.
Claims (5)
1. a hydraulic overflow loop, is characterized in that, comprising:
Pilot operated compound relief valve and direct-acting overflow valve, the filler opening of described pilot operated compound relief valve is all communicated with the working oil path of hydraulic system with the filler opening of described direct-acting overflow valve, the oil outlet of described pilot operated compound relief valve is all communicated with the work oil return of described hydraulic system with the oil outlet of described direct-acting overflow valve, the pilot pressure of described direct-acting overflow valve is greater than the maximum pilot pressure of described pilot operated compound relief valve, and the pilot pressure of described direct-acting overflow valve is less than the maximum service pressure of hydraulic system.
2. hydraulic overflow loop according to claim 1, is characterized in that, also comprises:
One-way valve, described one-way valve one end is communicated with the working oil path of described hydraulic system, and one end is communicated with the work oil return of described hydraulic system.
3. hydraulic overflow loop according to claim 2, is characterized in that, the logical oil of described one-way valve one direction, oppositely ends.
4. the hydraulic overflow loop according to any one of claims 1 to 3, is characterized in that, the pilot pressure of described direct-acting overflow valve is greater than 10MPa.
5. a hydraulic grouting pump, is characterized in that, comprises the hydraulic overflow loop described in any one of Claims 1 to 4, hydraulic jack, selector valve and slurry cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520546410.6U CN204828132U (en) | 2015-07-23 | 2015-07-23 | Hydraulic pressure overflow return circuit and hydraulic pressure grouting pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520546410.6U CN204828132U (en) | 2015-07-23 | 2015-07-23 | Hydraulic pressure overflow return circuit and hydraulic pressure grouting pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204828132U true CN204828132U (en) | 2015-12-02 |
Family
ID=54685739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520546410.6U Expired - Fee Related CN204828132U (en) | 2015-07-23 | 2015-07-23 | Hydraulic pressure overflow return circuit and hydraulic pressure grouting pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204828132U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065372A (en) * | 2015-07-23 | 2015-11-18 | 淮南矿业(集团)有限责任公司 | Hydraulic overflow loop and hydraulic grouting pump |
-
2015
- 2015-07-23 CN CN201520546410.6U patent/CN204828132U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065372A (en) * | 2015-07-23 | 2015-11-18 | 淮南矿业(集团)有限责任公司 | Hydraulic overflow loop and hydraulic grouting pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203384149U (en) | Manual hydraulic proportional valve | |
| CN103982475B (en) | A kind of concrete ejection car jib hydraulic control system | |
| CN106812498A (en) | A kind of intelligent well completion downhole flow valve hydraulic control system | |
| CN204828132U (en) | Hydraulic pressure overflow return circuit and hydraulic pressure grouting pump | |
| CN204344557U (en) | A kind of ultrahigh pressure pilot operated compound relief valve | |
| CN203285368U (en) | Wellhead return pressure control system for managed pressure drilling | |
| CN108612516B (en) | Rock drilling machine and hydraulic control valve group thereof | |
| US9482214B2 (en) | Hydraulic circuit for controlling booms of construction equipment | |
| CN104728203A (en) | Electro-hydraulic control reversing valve with internal pressure relief function | |
| CN218408637U (en) | Integrated water valve, water system and operation machine | |
| CN105065372A (en) | Hydraulic overflow loop and hydraulic grouting pump | |
| CN104314923B (en) | A kind of relief valve return liquid system and integrated relief valve return liquid valve block | |
| CN203248435U (en) | Hydraulic driving system, boom system and concrete cloth device | |
| CN104763822A (en) | Load maintaining valve | |
| CN104692254A (en) | Crane secondary ascension downslide prevention system | |
| CN104564877B (en) | A kind of excavator depressurizes throttle system | |
| CN205001276U (en) | A hydraulic circuit system for protecting hydro -cylinder | |
| CN204324803U (en) | A kind of novel hydraulic system of scissors lift bench | |
| CN103511379A (en) | Crane, hydraulic system and change-over valve | |
| CN204199342U (en) | Excavator swing arm damping fluid pressure control device | |
| CN204140514U (en) | The auto-reverse hydraulic system of mining wet-spraying machine stirring motor | |
| CN205207318U (en) | Quick oil return oil circuit of hydraulic cylinder | |
| CN204213085U (en) | A kind of concrete pumping system working connection | |
| CN203532380U (en) | Crane, hydraulic system and changeover valve | |
| CN103758802B (en) | Automatic drill feed liquor pressure control system and operating vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 |