CN201262089Y - Hydraulic system for supplying work medium with different filter fineness to different elements of hydraulic support - Google Patents
Hydraulic system for supplying work medium with different filter fineness to different elements of hydraulic support Download PDFInfo
- Publication number
- CN201262089Y CN201262089Y CNU2008201352402U CN200820135240U CN201262089Y CN 201262089 Y CN201262089 Y CN 201262089Y CN U2008201352402 U CNU2008201352402 U CN U2008201352402U CN 200820135240 U CN200820135240 U CN 200820135240U CN 201262089 Y CN201262089 Y CN 201262089Y
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- pilot valve
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- filter
- flow pipeline
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Abstract
The utility model relates to a hydraulic system for supplying working medium with different filtration fineness to different elements of a hydraulic support. The hydraulic system supplied the working medium for a master valve, an auxiliary valve, a lifting jack and an upright post, which has low requirement for filtration fineness, with a large-diameter pipeline after low-filtration fineness filtration; and supplies the working medium for a pilot valve, which has high requirement for filtration fineness, with an independent pipeline after high-filtration fineness filtration. The hydraulic system mainly comprises a pilot valve dedicated medium supply pipeline for supplying medium to the pilot valve and a high-pressure medium supply pipeline for supplying high-pressure working medium to all the hydraulic elements except the pilot valve. The pilot valve dedicated medium supply pipeline comprises pilot valve dedicated high-filtration fineness filtration stations/filers which are sequentially arranged on the pipeline; and the high-pressure medium supply pipeline comprises pilot valve dedicated low-filtration fineness filtration stations/filers which are sequentially arranged on the pipeline. The filtration area of each filtration link of the pilot valve dedicated medium supply pipeline is much larger than that of the pilot valve filter in the prior art, and the filtration link has low clogging liability due to very low flow rate.
Description
Technical field
The utility model relates to a kind of mine roof support technology, relates in particular to a kind of pilot valve and other Hydraulic Elements hydraulic system at the different elements of hydraulic support supplying work medium with different filter fineness of supplying work medium with different filter fineness respectively.
Background technology
The liquid-supplying system that generally is used at present hydraulic support adopts same power source pumping plant, and it can be formed with 2 tunnel even 3 road liquid-supplying systems by many parallel connection of pumps feed flows, but is not the pipeline of independent, the special feed flow of electromagnetic priority valve of electrohydraulic control system.
Existing hydraulic support liquid-supplying system among the figure, with 4 function pilot valves, every support of main valve representative, is represented the full face with 2 supports as shown in Figure 1, represents the pumping plant train with single pump.As can be seen from the figure, existing hydraulic support liquid-supplying system adopts single filtering accuracy, working media from liquid case 1 is pumped into high filtering precision filter station 4 by pump 2, be provided with unloader 3 between pump and the high filtering precision filter station, working media imports high filtering precision strainer 6 in the support by high pressure feed pipe 5 after high filtering precision filter station 4 filters, high filtering precision strainer 6 filters working media once more in the support, working media after the filtration is divided into two pipelines, wherein the sub-fraction working media is supplied with electromagnetic priority valve 9 after pilot valve strainer 7 filters, because main valve events causes the system pressure bust, in order to keep pilot valve action, also pilot valve feed liquor one way valve 8 will be increased in system and pilot valve returns liquid one way valve 11; All the other most of working medias are by major diameter pipeline other Hydraulic Elements through main valve 10 supply hydraulic supports, and after support returns liquid cutout valve 12, total liquid back pipe 13 rework solution casees 1, working media recycles.
Above-mentioned existing hydraulic system at the different elements of hydraulic support supplying work medium with different filter fineness, though main valve 10, jack, column etc. require lower to the filtering accuracy of working media, it is the low precision of 60 μ m, but electromagnetic priority valve 9 is by the automatically controlled action of essential safe type, and promptly voltage, electric current, inductance are all very little.For this reason, pilot valve valve port opening amount only is 0.25mm, and like this, just the cleannes to working media require very high, generally adopt at present both at home and abroad filter station, the multistage filter of 25 μ m to filter, therefore necessarily require the filtering accuracy of filter station, support internal filter to reach the high accuracy of 25 μ m.
Therefore, adopt existing filtration system mainly to have following defective, because need be with filter station, the filtering accuracy of multistage filter is brought up to 25 μ m from 60 μ m, on the one hand, because main valve 10, jack, other Hydraulic Elements working media flow such as column is big, up to 400-1500L/min, filter station by 25 μ m, the working media that multistage filter filters is to all hydraulic element feed flow, certainly will cause the extensive work medium through filter station, multistage filter, not only increase and filter cost, also cause the obstruction unnecessary of filter station and multistage filter, cause full face pilot system paralysis during ballast; On the other hand, because main valve events causes the system pressure bust,, also pilot valve feed liquor one way valve 8 will be increased in system and pilot valve returns liquid one way valve 11 in order to keep the pilot valve action.
The utility model content
For the hydraulic system cost height that overcomes existing hydraulic support, the shortcoming of stopping up easily, the purpose of this utility model provides a kind of hydraulic system at the different elements of hydraulic support supplying work medium with different filter fineness, working media to the less demanding main valve of filtering accuracy, auxiliary valve, jack, column, adopt low filtering accuracy to filter, with major diameter pipeline feed flow; And, adopt high filtering precision to filter to the working media of the demanding pilot valve of filtering accuracy, by the independent pipeline feed flow.
Need to prove that the described high filtering precision of the application, low filtering accuracy are comparatively speaking, are for convenience of description, they not merely refer to some definite numerical value.
In order to realize above-mentioned utility model purpose, the hydraulic system at the different elements of hydraulic support supplying work medium with different filter fineness that the utility model provides realizes by the following technical solutions: a kind of hydraulic system at the different elements of hydraulic support supplying work medium with different filter fineness comprises: the liquid case; Hydraulic support with pilot valve; Connecting liquid case and pilot valve also is the special-purpose feed flow pipeline of pilot valve of pilot valve feed flow; Connect liquid case and hydraulic support and the high pressure feed flow pipeline of high-pressure working medium is provided for all hydraulic element except that pilot valve; The special-purpose feed flow pipeline of described pilot valve comprises the pilot valve dedicated pump that is successively set on the pipeline, special-purpose high filtering precision filter station/strainer of pilot valve and the high filtering precision three-way cut-off valve filter assemblies that satisfies the pilot valve operating accuracy; Described high pressure feed flow pipeline comprises the pump that is successively set on the pipeline, the low filtering accuracy filter station/strainer that satisfies the hydraulic support operating accuracy.
The purpose of this utility model and technical solution problem thereof can also be further achieved by the following technical measures:
Special-purpose feed flow pipeline of described pilot valve and described high pressure feed flow pipeline are equipped with unloader.
The low filtering accuracy filter station/strainer of described high pressure feed flow pipeline comprises low filtering accuracy strainer in low filtering accuracy filter station and the support.
Connect branch road after the special-purpose feed flow pipeline of the described pilot valve three-way cut-off valve filter assemblies, the pressure that improves described pilot valve dedicated pump can make this branch road provide the high filtering precision working media for hydraulic support high pressure setting prop control valve.
In order to realize the utility model purpose, what the utility model provided can also be by the following technical solutions at the hydraulic system of different elements of hydraulic support supplying work medium with different filter fineness:
A kind of hydraulic system at the different elements of hydraulic support supplying work medium with different filter fineness is characterized in that comprising: the liquid case; Hydraulic support with pilot valve; Connect liquid case and hydraulic support and the high pressure feed flow pipeline of high-pressure working medium is provided; Described high pressure feed flow pipeline comprises the pump that is successively set on the pipeline, the low filtering accuracy filter station/strainer that satisfies the hydraulic support operating accuracy; Also comprise: the special-purpose feed flow pipeline of pilot valve that the high filtering precision working media is provided for pilot valve, the special-purpose feed flow pipeline of described pilot valve is got branch from the outflow pipeline of the low filtering accuracy filter station/strainer of high pressure feed flow pipeline, and be provided with the special-purpose high filtering precision filter station of pilot valve, the further high filtering precision of the low filtering accuracy working media of high pressure feed flow pipeline is filtered the back supply with pilot valve.
A kind of hydraulic system at the different elements of hydraulic support supplying work medium with different filter fineness is characterized in that comprising: the liquid case; Hydraulic support with pilot valve; Connect liquid case and hydraulic support and the high pressure feed flow pipeline of high-pressure working medium is provided; Described high pressure feed flow pipeline comprises that the pump that is successively set on the pipeline, the low filtering accuracy filter station that satisfies the hydraulic support operating accuracy and support hang down the filtering accuracy internal filter; Also comprise: the special-purpose feed flow pipeline of pilot valve that the high filtering precision working media is provided for pilot valve, the special-purpose feed flow pipeline of described pilot valve outflow pipeline of low precision strainer in the support of high pressure feed flow pipeline is got branch, connect high filtering precision big filter area strainer and the pilot valve feed liquor one way valve that satisfies the pilot valve operating accuracy again, the working media of high filtering precision is provided for pilot valve.
Compare with prior art, the utility model need big flow (main valve of 400 ~ 1500L/min) low filtering accuracies (60 μ m) and follow-up auxiliary valve, jack, column thereof and need high filtering precision (25 μ m) very low discharge (0.4 ~ 4L/min) pilot valve separates.High pressure filtering station, support internal filter filtering accuracy can adopt 60 μ m, and the filtering accuracy that aims at pilot valve solution feed pump, filter station, threeway cut-off filter assembly is 25 μ m, because flow is very little, it filters link and is not easy to stop up.Also can save pilot valve feed liquor one way valve of the prior art.The independent special-purpose liquid-supplying system of pilot valve, because the user is little to the working media demand, pressure oscillation is very little, pilot valve is very strong to the control ability of main valve.(400 ~ 1500L/min) main valve and follow-up auxiliary valve thereof, jack, column respectively filter link with 60 μ m's, and what its plugging rate will be well below prior art respectively filters link and need big flow.If the liquid supply pressure of pilot valve dedicated pump, pilot valve special filtering station, the special-purpose feed flow pipeline of pilot valve, threeway cut-off filter assembly is brought up to the pressure (38 ~ 45MPa) of high pressure setting prop demand, dispose high pressure setting prop control valve again, then can control hydraulic support high pressure setting prop simultaneously.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of manual, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is the liquid-supplying system schematic diagram of hydraulic support in the prior art;
Fig. 2 is the liquid-supplying system schematic diagram of the utility model embodiment one hydraulic support;
Fig. 3 is the liquid-supplying system schematic diagram of the utility model embodiment two hydraulic supports;
Fig. 4 is the liquid-supplying system schematic diagram of the utility model embodiment three hydraulic supports;
Fig. 5 is the liquid-supplying system schematic diagram of the utility model embodiment four hydraulic supports.
Among the figure: 1, liquid case; 2, pump; 3, unloader; 4, high filtering precision filter station; 5, high pressure feed pipe; 6, high filtering precision strainer in the support; 7, pilot valve strainer; 8, pilot valve feed liquor one way valve; 9, electromagnetic priority valve; 10, main valve; 11, pilot valve returns the liquid one way valve; 12, support returns the liquid cutout valve; 13, total liquid back pipe road; 14, low filtering accuracy filter station; 16, low filtering accuracy strainer in the support; 17, pilot valve dedicated pump; 18, the special-purpose high filtering precision filter station of pilot valve; 19, the special-purpose feed flow pipeline of pilot valve; 20, threeway is by the high filtering precision filter assemblies; 21, high pressure setting prop control valve; 22, big filter area high filtering precision strainer.
The specific embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined utility model purpose is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to the utility model proposes at the hydraulic system of different elements of hydraulic support supplying work medium with different filter fineness describe in detail as after.
Need to prove, in each embodiment accompanying drawing, with 4 function pilot valves, every hydraulic support of main valve representative, represent the full face with 2 supports, represent the pumping plant train with single pump, with the low filtering accuracy of 60 μ m precision representative, represent high filtering precision with 25 μ m precision, specific implementation process is not limited thereto.
Embodiment one:
As shown in Figure 2, the utility model is at the hydraulic system of different elements of hydraulic support supplying work medium with different filter fineness, include the liquid case 1 of the required working media of storage hydraulic support work, hydraulic support, the feed flow pipeline is divided into special-purpose feed flow pipeline 19 of pilot valve and high pressure feed flow pipeline 5, need big flow (400 ~ 1500L/min), the feed flow pipeline that hangs down the main valve 10 of filtering accuracy (60 μ m) and follow-up auxiliary valve thereof, jack, column with need high filtering precision (25 μ m), very low discharge (0.4 ~ 4L/min) pilot valve feed flow pipeline separates.High pressure feed flow pipeline 5 is identical with the feed flow pipeline of prior art, but filtering accuracy is reduced to 60 μ m from 25 original μ m.Working media in the liquid case is pumped to 60 μ m filtering accuracy filter stations, and the support internal filter 16 through 60 μ m filtering accuracies arrives hydraulic support main valve 10 again, for main valve 10 provides low filtering accuracy working media.The special-purpose feed flow pipeline 19 of pilot valve provides the working media of 25 μ m filtering accuracies separately for pilot valve 9, working media in the liquid case 1 is pumped to the special-purpose high filtering precision filter station 18 of 25 μ m pilot valves separately by pilot valve dedicated pump 17, three-way cut-off valve filter assemblies 20 through 25 μ m filtering accuracies arrives pilot valve 9 again, for pilot valve 9 provides the high filtering precision working media.The Hydraulic Elements working media of entire bracket work plane is after support returns liquid cutout valve 12, total liquid back pipe 13 rework solution casees 1, and working media recycles.In above-mentioned pipe-line system,, also can be provided with unloader 3 for avoiding overload.
The utility model is at the hydraulic system of different elements of hydraulic support supplying work medium with different filter fineness, the filter area that the special-purpose feed flow pipeline of pilot valve respectively filters link all is far longer than the pilot valve strainer of prior art, because flow is very little, it filters link and is not easy to stop up.Because pilot valve has adopted the liquid-supplying system of independent special use, present embodiment also can be saved pilot valve feed liquor one way valve of the prior art.And because the user is little to the working media demand, pressure oscillation is very little, and pilot valve is very strong to the control ability of main valve.High pressure feed flow pipeline respectively filters link with 60 μ m's, has not only saved the filtration cost, and what its plugging rate also will be well below prior art respectively filters link.
Embodiment two:
As shown in Figure 3, the utility model is at the hydraulic system of different elements of hydraulic support supplying work medium with different filter fineness, be on the basis of Shi Liyi, after the special-purpose feed flow pipeline of pilot valve 19 three-way cut-off valve filter assemblies 20, connect branch road, make this branch road provide the high filtering precision working media for hydraulic support high pressure setting prop control valve 21.During work, the liquid supply pressure of pilot valve dedicated pump 17, the special-purpose high filtering precision filter station 18 of pilot valve, the special-purpose feed flow pipeline 19 of pilot valve, threeway cut-off filter assembly 20 is brought up to the pressure (38 ~ 45MPa) of hydraulic support high pressure setting prop demand, dispose high pressure setting prop control valve 21 again, just can control pilot valve 9 and high pressure setting prop control valve 21 simultaneously with a system, reduce pipeline, save cost.
Embodiment three:
As shown in Figure 4, the utility model is at the hydraulic system of different elements of hydraulic support supplying work medium with different filter fineness, be on the basis of embodiment one, save the pilot valve dedicated pump 12 among the embodiment one, after the low filtering accuracy filter station 14 of 60 μ m of high pressure feed flow pipeline, get the special-purpose feed flow line branching of pilot valve, the special-purpose high filtering precision filter station of 25 μ m pilot valves is set in this branch line to full face pilot valve feed flow.Owing to removed the pilot valve dedicated pump, cause the system pressure bust, keep the pilot valve action for fear of main valve events, in the special-purpose feed flow pipeline 19 of pilot valve, pilot valve feed liquor one way valve 8 is set.
Embodiment four:
As shown in Figure 5, the utility model seems identical with the liquid-supplying system of hydraulic support in the prior art at the hydraulic system of different elements of hydraulic support supplying work medium with different filter fineness, but the liquid-supplying system pilot valve strainer 7 of hydraulic support has essential distinction in the utility model pilot valve big filter area high filtering precision strainer 22 and the prior art.The latter is the little strainers of plug-in type 25 μ m, and the former is big 25 μ m strainers.The utility model pilot valve strainer will be finished high filtering precision alone and filter, and does not rely on front end strainers at different levels.So the utility model filter station, support internal filter all are 60 μ m.Reach the utility model equally to the utility model purpose of different Hydraulic Elements for the working media of different filtering accuracies.
The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.
Claims (9)
1, a kind of hydraulic system to the different elements of hydraulic support supplying work medium with different filter fineness is characterized in that comprising: the liquid case; Hydraulic support with pilot valve; Connecting liquid case and pilot valve also is the special-purpose feed flow pipeline of pilot valve of pilot valve feed flow; Connect liquid case and hydraulic support and the high pressure feed flow pipeline of high-pressure working medium is provided for all hydraulic element except that pilot valve; The special-purpose feed flow pipeline of described pilot valve comprises the pilot valve dedicated pump that is successively set on the pipeline, special-purpose high filtering precision filter station/strainer of pilot valve and the high filtering precision three-way cut-off valve filter assemblies that satisfies the pilot valve operating accuracy; Described high pressure feed flow pipeline comprises the pump that is successively set on the pipeline, the low filtering accuracy filter station/strainer that satisfies the hydraulic support operating accuracy.
2, a kind of hydraulic system to the different elements of hydraulic support supplying work medium with different filter fineness according to claim 1 is characterized in that: special-purpose feed flow pipeline of described pilot valve and described high pressure feed flow pipeline are equipped with unloader.
3, a kind of hydraulic system to the different elements of hydraulic support supplying work medium with different filter fineness according to claim 2 is characterized in that: the low filtering accuracy filter station/strainer of described high pressure feed flow pipeline comprises low filtering accuracy strainer in low filtering accuracy filter station and the support.
4, according to claim 2 or 3 described a kind of hydraulic systems to the different elements of hydraulic support supplying work medium with different filter fineness, it is characterized in that: connect branch road after the special-purpose feed flow pipeline of the described pilot valve three-way cut-off valve filter assemblies, the pressure that improves described pilot valve dedicated pump can make this branch road provide the high filtering precision working media for hydraulic support high pressure setting prop control valve.
5, a kind of hydraulic system to the different elements of hydraulic support supplying work medium with different filter fineness is characterized in that comprising: the liquid case; Hydraulic support with pilot valve; Connect liquid case and hydraulic support and the high pressure feed flow pipeline of high-pressure working medium is provided; Described high pressure feed flow pipeline comprises the pump that is successively set on the pipeline, the low filtering accuracy filter station/strainer that satisfies the hydraulic support operating accuracy; Also comprise: the special-purpose feed flow pipeline of pilot valve that the high filtering precision working media is provided for pilot valve, the special-purpose feed flow pipeline of described pilot valve is got branch from the outflow pipeline of the low filtering accuracy filter station/strainer of high pressure feed flow pipeline, and be provided with the special-purpose high filtering precision filter station of pilot valve, the further high filtering precision of the low filtering accuracy working media of high pressure feed flow pipeline is filtered the back supply with pilot valve.
6, a kind of hydraulic system to the different elements of hydraulic support supplying work medium with different filter fineness according to claim 5 is characterized in that: be provided with unloader between the pump of described high pressure feed flow pipeline and the low filtering accuracy filter station/strainer.
7, a kind of hydraulic system to the different elements of hydraulic support supplying work medium with different filter fineness according to claim 6 is characterized in that: the special-purpose feed flow pipeline of described pilot valve also is provided with high filtering precision filter station/strainer, high filtering precision three-way cut-off valve filter assemblies and the pilot valve feed liquor one way valve that satisfies the pilot valve operating accuracy.
8, according to claim 6 or 7 described a kind of hydraulic systems to the different elements of hydraulic support supplying work medium with different filter fineness, it is characterized in that: the low filtering accuracy filter station/strainer of described high pressure feed flow pipeline comprises low filtering accuracy filter station and the interior low filtering accuracy strainer of support, and the special-purpose feed flow line branching of described pilot valve tie point is arranged in low filtering accuracy filter station and the support and hangs down between the filtering accuracy strainer.
9, a kind of hydraulic system to the different elements of hydraulic support supplying work medium with different filter fineness is characterized in that comprising: the liquid case; Hydraulic support with pilot valve; Connect liquid case and hydraulic support and the high pressure feed flow pipeline of high-pressure working medium is provided; Described high pressure feed flow pipeline comprises that the pump that is successively set on the pipeline, the low filtering accuracy filter station that satisfies the hydraulic support operating accuracy and support hang down the filtering accuracy internal filter; Also comprise: the special-purpose feed flow pipeline of pilot valve that the high filtering precision working media is provided for pilot valve, the special-purpose feed flow pipeline of described pilot valve outflow pipeline of low precision strainer in the support of high pressure feed flow pipeline is got branch, connect high filtering precision big filter area strainer and the pilot valve feed liquor one way valve that satisfies the pilot valve operating accuracy again, the working media of high filtering precision is provided for pilot valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201352402U CN201262089Y (en) | 2008-09-11 | 2008-09-11 | Hydraulic system for supplying work medium with different filter fineness to different elements of hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201352402U CN201262089Y (en) | 2008-09-11 | 2008-09-11 | Hydraulic system for supplying work medium with different filter fineness to different elements of hydraulic support |
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| Publication Number | Publication Date |
|---|---|
| CN201262089Y true CN201262089Y (en) | 2009-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201352402U Expired - Lifetime CN201262089Y (en) | 2008-09-11 | 2008-09-11 | Hydraulic system for supplying work medium with different filter fineness to different elements of hydraulic support |
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| CN (1) | CN201262089Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237014A (en) * | 2019-10-29 | 2020-06-05 | 北京天地玛珂电液控制系统有限公司 | Aqueous medium guarantee system for coal face |
-
2008
- 2008-09-11 CN CNU2008201352402U patent/CN201262089Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237014A (en) * | 2019-10-29 | 2020-06-05 | 北京天地玛珂电液控制系统有限公司 | Aqueous medium guarantee system for coal face |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090624 Effective date of abandoning: 20080911 |