CN104069673A - Back washing double filters - Google Patents
Back washing double filters Download PDFInfo
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- CN104069673A CN104069673A CN201410349637.1A CN201410349637A CN104069673A CN 104069673 A CN104069673 A CN 104069673A CN 201410349637 A CN201410349637 A CN 201410349637A CN 104069673 A CN104069673 A CN 104069673A
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- mouth
- valve
- hydraulic control
- way valve
- filter
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- 238000011001 backwashing Methods 0.000 title abstract 3
- 239000007788 liquid Substances 0.000 claims abstract description 99
- 238000011010 flushing procedure Methods 0.000 claims description 46
- 238000004140 cleaning Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000000839 emulsion Substances 0.000 description 30
- 238000001914 filtration Methods 0.000 description 21
- 239000012535 impurity Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
Abstract
The invention belongs to the technical field of filter systems, relates to a filter system for cleaning a filter by utilizing a back washing principle, particularly to a double filter parallel filter system, and aims to provide a filter system fast to clean and capable of cleaning a filter screen without being dismounted. According to the filter system, two filters are connected in parallel, and the working condition of the two filters is controlled through switching of condition conversion valves; in back washing, one filter filters an original emulsified liquid, and the other filter is cleaned by utilization of the filtered cleaning emulsified liquid. The cleaning time is short, the cleaning effect of the filters is good, and secondary pollution can be avoided.
Description
Technical field
The invention belongs to filtration system technical field, relate to a kind of filtration system of utilizing backwash principle to carry out cleaning and filtering, be specifically related to a kind of filtration system of twinfilter parallel connection.
Background technology
Under coal mine, high-pressure emulsion recycles after need filtering at present, the general screen pack that adopts filters, because environment under ore deposit is severe, screen pack used after a period of time, will on filter screen, adhere to very many impurity, these impurity can affect the rate of filtration and the filter efficiency of filter core, therefore, need in time filter core to be cleared up.Filter core need be pulled down to rear cleaning at present, this will shut down replacing filter screen, and impact is normally produced, and cost is higher simultaneously, and the replacing time is longer.
Summary of the invention
The present invention overcomes the deficiency of prior art existence, and technical problem to be solved is cleaned fast for providing a kind of, gets final product the filtration system of cleaning and filtering net without dismounting.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: backwash twinfilter, comprise the first filter and the second filter, in described the first filter, be divided into exocoel I and inner chamber I by screen pack I, one side of described the first filter is provided with the first liquid collecting cavity being connected with exocoel I, opposite side is provided with the second liquid collecting cavity being connected with exocoel I, on described the first liquid collecting cavity, be provided with the first inlet being connected with system feed tube I, on the second liquid collecting cavity, be provided with the first liquid outlet being connected with the drain pipe I that recoils, the outside of described the first liquid collecting cavity is also provided with the first joint being connected with inner chamber I, the overhanging port of the first joint is the second inlet being connected with backwash feed tube I, the arranged outside of described the second liquid collecting cavity has the second joint being connected with inner chamber I, the overhanging end of the second joint is the second liquid outlet being connected with system drain pipe I.
Wherein, between the first inlet and system feed tube I, be connected by hydraulic lock I, hydraulic lock I is made up of the first hydraulic control one-way valve and first check valve of differential concatenation, the P mouth of described the first hydraulic control one-way valve is connected with the first inlet, the P mouth of the first check valve is connected with system feed tube I, between the first liquid outlet and recoil drain pipe I, be connected by the second hydraulic control one-way valve, the first liquid outlet is connected with the T mouth of the second hydraulic control one-way valve, between described the second inlet and recoil feed tube I, be connected by the second check valve, the second inlet is connected with the T mouth of the second check valve, recoil feed tube I is connected with the T mouth of the second check valve, between the second liquid outlet and system drain pipe I, be connected by hydraulic lock II, hydraulic lock II is made up of the 3rd hydraulic control one-way valve and the 3rd check valve of differential concatenation, the second liquid outlet is connected with the T mouth of the 3rd hydraulic control one-way valve, system drain pipe I is connected with the T mouth of the 3rd check valve.
Wherein, in described the second filter, be divided into exocoel II and inner chamber II by screen pack II, one side of described the second filter is provided with the 3rd liquid collecting cavity being connected with exocoel II, opposite side is provided with the 4th liquid collecting cavity being connected with exocoel II, on described the 3rd liquid collecting cavity, be provided with the 3rd inlet being connected with system feed tube II, on the 4th liquid collecting cavity, be provided with the 3rd liquid outlet being connected with the drain pipe II that recoils, the outside of described the 3rd liquid collecting cavity is also provided with the 3rd joint being connected with inner chamber II, the overhanging port of the 3rd joint is the 4th inlet, the arranged outside of described the 4th liquid collecting cavity has the 4th joint being connected with inner chamber I, the overhanging end of the 4th joint is the 4th liquid outlet.
Wherein, between the 3rd inlet and system feed tube II, be connected by hydraulic lock III, hydraulic lock III is made up of the 4th hydraulic control one-way valve and the 4th check valve of differential concatenation, the P mouth of described the 4th hydraulic control one-way valve is connected with the 3rd inlet, system feed tube II is connected with the P mouth of the 4th check valve, between the 3rd liquid outlet and recoil drain pipe II, be connected by the 5th hydraulic control one-way valve, the 3rd liquid outlet is connected with the T mouth of the 5th hydraulic control one-way valve, between described the 4th inlet and recoil feed tube II, be connected by the 5th check valve, the 4th inlet is connected with the T mouth of the 5th check valve, between the 4th liquid outlet and system drain pipe II, be connected by hydraulic lock IV, hydraulic lock IV comprises the 6th hydraulic control one-way valve and the 6th check valve, the 4th liquid outlet is connected with the T mouth of the 6th hydraulic control one-way valve, system drain pipe II is connected with the T mouth of the 6th check valve.
Wherein, described system feed tube II is connected with the P mouth of state switching valve, the A mouth of state switching valve is connected with the oil circuit control of the 3rd hydraulic control one-way valve with the first hydraulic control one-way valve by pipeline, and the B mouth of state switching valve is connected with the oil circuit control of the 6th hydraulic control one-way valve with the 4th hydraulic control one-way valve by pipeline.
Wherein, be also provided with flushing valve I in system, the B mouth of flushing valve I is connected with the oil circuit control of the second hydraulic control one-way valve with the P mouth of the second check valve, and the T mouth of flushing valve I is connected with the T mouth of the 6th check valve.
Wherein, be also provided with flushing valve II in system, the B mouth of flushing valve II is connected with the oil circuit control of the 5th hydraulic control one-way valve with the P mouth of the 5th check valve, and the T mouth of flushing valve II is connected with the T mouth of the 3rd check valve.
Wherein, described flushing valve I, flushing valve II and state switching valve are the three-position four-way valve of Y type.
The present invention compared with prior art has following beneficial effect: the present invention has three kinds of filtration conditions, the first is at state switching valve during in meta, the first filter and the second filter all filter emulsion, emulsion flows from exocoel to inner chamber, and emulsion completes filter process by the filtration of screen pack; The second is when state switching valve is when the next, the first filter is in filtration condition, the second filter is in backwash state, clean emulsion after the first filter filters enters in the second filter, the filter core of the second filter is carried out to backwash with clean emulsion, the impurity in filter core outside is rinsed out, and the cleannes of filter core are high, avoid secondary pollution; The third is that the first filter is in backwash state, the second filter is in filtration condition, and the clean emulsion after the second filter filters enters in the first filter, the filter core of the first filter carried out to backwash with clean emulsion, the cleannes of filter core are high, avoid secondary pollution.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is the structural representation of backwash twinfilter of the present invention.
Fig. 2 is the structural representation of all hydraulic control one-way valves in Fig. 1.
Fig. 3 is the structural representation of all check valves in Fig. 1.
Fig. 4 is flushing valve I in Fig. 1, or is flushing valve II, or is the structural representation of state switching valve.
In figure: 1 is the first filter, 2 is the second filter, 3 is state switching valve, 4 is flushing valve I, 5 is flushing valve II, 11 is exocoel I, 12 is inner chamber I, 13 is the first liquid collecting cavity, 14 is the second liquid collecting cavity, 15 is the first joint, 16 is the second joint, 17 is hydraulic lock I, 18 is the second hydraulic control one-way valve, 19 is hydraulic lock II, 20 is the second check valve, 21 is exocoel II, 22 is inner chamber II, 23 is the 3rd liquid collecting cavity, 24 is the 4th liquid collecting cavity, 25 is the 3rd joint, 26 is the 4th joint, 27 is hydraulic lock III, 28 is the 5th hydraulic control one-way valve, 29 is hydraulic lock IV, 30 is the 5th check valve, 131 is the first inlet, 141 is the first liquid outlet, 151 is the second inlet, 161 second liquid outlets, 171 is the first hydraulic control one-way valve, 172 is the first check valve, 191 is the 3rd hydraulic control one-way valve, 192 is the 3rd check valve, 231 is the 3rd inlet, 241 is the 3rd liquid outlet, 251 is the 4th inlet, 261 is the 4th liquid outlet, 271 is the 4th hydraulic control one-way valve, 272 is the 4th check valve, 291 is the 6th hydraulic control one-way valve, 292 is the 6th check valve.
Detailed description of the invention
In conjunction with the accompanying drawings, the present invention is further detailed explanation, and accompanying drawing is the schematic diagram of simplifying, and basic structure of the present invention is only described in a schematic way, and therefore it only shows the formation relevant with the present invention.
As Figure 1-4, backwash twinfilter, comprise the first filter 1 and the second filter 2, in described the first filter 1, be divided into exocoel I 11 and inner chamber I 12 by screen pack I, one side of described the first filter 1 is provided with the first liquid collecting cavity 13 being connected with exocoel I 11, opposite side is provided with the second liquid collecting cavity 14 being connected with exocoel I 11, on described the first liquid collecting cavity 13, be provided with the first inlet 131 being connected with system feed tube I, on the second liquid collecting cavity 14, be provided with the first liquid outlet 141 being connected with the drain pipe I that recoils, the outside of described the first liquid collecting cavity 13 is also provided with the first joint 15 being connected with inner chamber I 12, the overhanging port of the first joint 15 is the second inlet 151 being connected with backwash feed tube I, the arranged outside of described the second liquid collecting cavity 14 has the second joint 16 being connected with inner chamber I 12, the overhanging end of the second joint 16 is the second liquid outlet 161 being connected with system drain pipe I,
Wherein, between the first inlet 131 and system feed tube I, be connected by hydraulic lock I 17, hydraulic lock I 17 is made up of the first hydraulic control one-way valve 171 and first check valve 172 of differential concatenation, the P mouth of described the first hydraulic control one-way valve 171 is connected with the first inlet 131, the P mouth of the first check valve 172 is connected with system feed tube I, between the first liquid outlet 141 and recoil drain pipe I, be connected by the second hydraulic control one-way valve 18, the first liquid outlet 141 is connected with the T mouth of the second hydraulic control one-way valve 18, between described the second inlet 151 and recoil feed tube I, be connected by the second check valve 20, the second inlet 151 is connected with the T mouth of the second check valve 20, recoil feed tube I is connected with the T mouth of the second check valve 20, between the second liquid outlet 161 and system drain pipe I, be connected by hydraulic lock II 19, hydraulic lock II 19 is made up of the 3rd hydraulic control one-way valve 191 and the 3rd check valve 192 of differential concatenation, the second liquid outlet 161 is connected with the T mouth of the 3rd hydraulic control one-way valve 191, system drain pipe I is connected with the T mouth of the 3rd check valve 192,
Wherein, in described the second filter 2, be divided into exocoel II 21 and inner chamber II 22 by screen pack II, one side of described the second filter 2 is provided with the 3rd liquid collecting cavity 23 being connected with exocoel II 21, opposite side is provided with the 4th liquid collecting cavity 24 being connected with exocoel II 21, on described the 3rd liquid collecting cavity 23, be provided with the 3rd inlet 231 being connected with system feed tube II, on the 4th liquid collecting cavity 24, be provided with the 3rd liquid outlet 241 being connected with the drain pipe II that recoils, the outside of described the 3rd liquid collecting cavity 23 is also provided with the 3rd joint 25 being connected with inner chamber II 22, the overhanging port of the 3rd joint 25 is the 4th inlet 251, the arranged outside of described the 4th liquid collecting cavity 24 has the 4th joint 26 being connected with inner chamber I 12, the overhanging end of the 4th joint 26 is the 4th liquid outlet 261,
Wherein, between the 3rd inlet 231 and system feed tube II, be connected by hydraulic lock III 27, hydraulic lock III 27 is made up of the 4th hydraulic control one-way valve 271 and the 4th check valve 272 of differential concatenation, the P mouth of described the 4th hydraulic control one-way valve 271 is connected with the 3rd inlet 231, system feed tube II is connected with the P mouth of the 4th check valve 272, between the 3rd liquid outlet 241 and recoil drain pipe II, be connected by the 5th hydraulic control one-way valve 28, the 3rd liquid outlet 241 is connected with the T mouth of the 5th hydraulic control one-way valve 28, between described the 4th inlet 251 and recoil feed tube II, be connected by the 5th check valve 30, the 4th inlet 251 is connected with the T mouth of the 5th check valve 30, between the 4th liquid outlet 261 and system drain pipe II, be connected by hydraulic lock IV 29, hydraulic lock IV 29 comprises the 6th hydraulic control one-way valve 291 and the 6th check valve 292, the 4th liquid outlet 261 is connected with the T mouth of the 6th hydraulic control one-way valve 291, system drain pipe II is connected with the T mouth of the 6th check valve,
Wherein, described system feed tube II is connected with the P mouth of state switching valve 3, the A mouth of state switching valve 3 is connected with the oil circuit control of the 3rd hydraulic control one-way valve 191 with the first hydraulic control one-way valve 171 by pipeline, and the B mouth of state switching valve 3 is connected with the oil circuit control of the 6th hydraulic control one-way valve 291 with the 4th hydraulic control one-way valve 271 by pipeline;
Wherein, be also provided with flushing valve I 4 in system, the B mouth of flushing valve I 4 is connected with the oil circuit control of the second hydraulic control one-way valve 18 with the P mouth of the second check valve 20, and the T mouth of flushing valve I 4 is connected with the T mouth of the 6th check valve 292;
Wherein, be also provided with flushing valve II 5 in system, the B mouth of flushing valve II 5 is connected with the oil circuit control of the 5th hydraulic control one-way valve 28 with the P mouth of the 5th check valve 30, and the T mouth of flushing valve II 5 is connected with the T mouth of the 3rd check valve 192;
Wherein, described flushing valve I 4, flushing valve II 5 and state switching valve 3 are the three-position four-way valve of Y type.
The present invention is by the first filter 1 and the second filter 2 parallel operations, system feed tube I is led to the required pressure emulsified liquid of complete machine, system drain pipe I is clean emulsion after discharging and filtering, backwash feed tube I is common to the emulsion that cleans the first filter core 1, backwash drain pipe I is drained the emulsion cleaning after filter core, system feed tube II is led to the required pressure emulsified liquid of complete machine, system drain pipe II is clean emulsion after discharging and filtering, backwash feed tube II is common to the emulsion that cleans the second filter core 2, backwash drain pipe II is drained the emulsion cleaning after filter core, when two filter work, there are three kinds of duties.
The first, two kinds of filters are all in filtration condition.
When state switching valve 3, flushing valve I and flushing valve II are all in the time of meta, the feed liquor of system enters from the P mouth of state switching valve 3, flow out from A mouth and the B mouth of state switching valve 3, the emulsion flowing out from A mouth is opened the first hydraulic control one-way valve 171 the first filter 1 and the 3rd hydraulic control one-way valve 191, the emulsion of system feed tube I is successively by entering into the first liquid collecting cavity 13 after the first check valve 172 and the first hydraulic control one-way valve 171, then successively by exocoel I 11, screen pack I, inner chamber I 12, the second joint 16, the 3rd hydraulic control one-way valve 191 and the rear discharge of the 3rd check valve 192, complete the filtration to emulsion, at this moment, the second hydraulic control one-way valve 18 and the second check valve 20 are all in closed condition, can leakage.The emulsion flowing out from B mouth is opened the 4th hydraulic control one-way valve 271 and the 6th hydraulic control one-way valve 291, the emulsion of system feed tube II enters the 3rd liquid collecting cavity 23 of the second filter 2 after by the 4th check valve 272, the 4th hydraulic control one-way valve 271, then successively by exocoel II 21, screen pack II, inner chamber II 22, the 4th joint 26, the 6th hydraulic control one-way valve 291, the rear discharge of the 6th check valve 292, complete the filtration to emulsion.At this moment, the 5th hydraulic control one-way valve 28 and the 5th check valve 30, can leakages all in closed condition.
The second, the first filter 1 are in filtration condition, and the second filter 2 is in backwash state.
When state switching valve 3 is when the next, the feed liquor of system enters from the P mouth of state switching valve 3, flow out from the A mouth of state switching valve 3, the emulsion flowing out from A mouth is opened the first hydraulic control one-way valve 171 the first filter 1 and the 3rd hydraulic control one-way valve 191, the second hydraulic control one-way valve 18 and the second check valve 20 are all in closed condition, the emulsion of system feed tube I is successively by entering into the first liquid collecting cavity 13 after the first check valve 172 and the first hydraulic control one-way valve 171, then successively by exocoel I 11, screen pack I, inner chamber I 12, the second joint 16, the 3rd hydraulic control one-way valve 191 and the rear discharge of the 3rd check valve 192, complete the filtration to emulsion.Do not have emulsion to flow out in the B mouth of flushing valve state switching valve 3, flushing valve I 4 is in meta, flushing valve II 5 moves to right position, the emulsion of discharging from the 3rd check valve 192 enters flushing valve II, then discharge from the B mouth of flushing valve II, as the counter-flushing liquid of the second filter 2, counter-flushing liquid is opened the 5th hydraulic control one-way valve 28, hydraulic lock III 27 and hydraulic lock IV 29 are all in closed condition, clean counter-flushing liquid is opened the 5th check valve 30 and enters into the inner chamber II 22 of the second filter 2, then successively by screen pack II, exocoel II 21, the 4th liquid collecting cavity 24, the 3rd liquid outlet 241 and the rear discharge of the 5th hydraulic control one-way valve 28, clean counter-flushing liquid rinses out bur and the impurity in screen pack II outside, ensure the clean of the second filter 2.
The third, the second filter 2 is in filtration condition, the first filter 1 is in backwash state.
When state switching valve 3 is when upper, the feed liquor of system enters from the P mouth of state switching valve 3, flow out from the B mouth of state switching valve 3, the emulsion flowing out from B mouth is opened the 4th hydraulic control one-way valve 271 the second filter 2 and the 6th hydraulic control one-way valve 291, the 5th hydraulic control one-way valve 28 and the 5th check valve 30 are all in closed condition, the emulsion of system feed tube II is successively by entering into the 3rd liquid collecting cavity 23 after the 4th check valve 272 and the 4th hydraulic control one-way valve 271, then successively by exocoel II 21, screen pack II, inner chamber II 22, the 4th joint 26, the 6th hydraulic control one-way valve 291 and the 6th check valve 292 are discharged, complete the filtration to emulsion.Flushing valve I 4 moves to right position, flushing valve II 5 is in meta, clean emulsion from the second filter 2 filters by the B mouth of flushing valve I after as the counter-flushing liquid of the first filter 1, the pressure of counter-flushing liquid is opened the second hydraulic control one-way valve 18, hydraulic lock I 17 and hydraulic lock II 19 are all in closed condition, counter-flushing liquid is from the second check valve 20 enters into the inner chamber I 12 of the first filter 1, successively by filter I, exocoel I 11, the second liquid collecting cavity 14 and the rear discharge of the second hydraulic control one-way valve 18, clean counter-flushing liquid rinses out bur and the impurity in screen pack I outside, ensure the clean of the first filter 1.
The second of the present invention and the third working method, utilize clean backwash emulsion to clean screen pack, can intersect cleaning, and cleaning time is short, and cleaning effect is good.
By reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken possessing those of ordinary skill in the art, can also under the prerequisite that does not depart from aim of the present invention, makes a variety of changes.
Claims (2)
1. backwash twinfilter, it is characterized in that, comprise the first filter (1) and the second filter (2), in described the first filter (1), be divided into exocoel I (11) and inner chamber I (12) by screen pack I, one side of described the first filter (1) is provided with the first liquid collecting cavity (13) being connected with exocoel I (11), opposite side is provided with the second liquid collecting cavity (14) being connected with exocoel I (11), on described the first liquid collecting cavity (13), be provided with the first inlet (131) being connected with system feed tube I, on the second liquid collecting cavity (14), be provided with the first liquid outlet (141) being connected with the drain pipe I that recoils, the outside of described the first liquid collecting cavity (13) is also provided with the first joint (15) being connected with inner chamber I (12), the overhanging port of the first joint (15) is the second inlet (151) being connected with backwash feed tube I, the arranged outside of described the second liquid collecting cavity (14) has the second joint (16) being connected with inner chamber I (12), the overhanging end of the second joint (16) is the second liquid outlet (161) being connected with system drain pipe I,
Between the first inlet (131) and system feed tube I, be connected by hydraulic lock I (17), hydraulic lock I (17) is made up of the first hydraulic control one-way valve (171) and first check valve (172) of differential concatenation, the P mouth of described the first hydraulic control one-way valve (171) is connected with the first inlet (131), the P mouth of the first check valve (172) is connected with system feed tube I, between the first liquid outlet (141) and recoil drain pipe I, be connected by the second hydraulic control one-way valve (18), the first liquid outlet (141) is connected with the T mouth of the second hydraulic control one-way valve (18), between described the second inlet (151) and recoil feed tube I, be connected by the second check valve (20), the second inlet (151) is connected with the T mouth of the second check valve (20), recoil feed tube I is connected with the T mouth of the second check valve (20), between the second liquid outlet (161) and system drain pipe I, be connected by hydraulic lock II (19), hydraulic lock II (19) is made up of the 3rd hydraulic control one-way valve (191) and the 3rd check valve (192) of differential concatenation, the second liquid outlet (161) is connected with the T mouth of the 3rd hydraulic control one-way valve (191), system drain pipe I is connected with the T mouth of the 3rd check valve (192),
In described the second filter (2), be divided into exocoel II (21) and inner chamber II (22) by screen pack II, one side of described the second filter (2) is provided with the 3rd liquid collecting cavity (23) being connected with exocoel II (21), opposite side is provided with the 4th liquid collecting cavity (24) being connected with exocoel II (21), on described the 3rd liquid collecting cavity (23), be provided with the 3rd inlet (231) being connected with system feed tube II, on the 4th liquid collecting cavity (24), be provided with the 3rd liquid outlet (241) being connected with the drain pipe II that recoils, the outside of described the 3rd liquid collecting cavity (23) is also provided with the 3rd joint (25) being connected with inner chamber II (22), the overhanging port of the 3rd joint (25) is the 4th inlet (251), the arranged outside of described the 4th liquid collecting cavity (24) has the 4th joint (26) being connected with inner chamber I (12), the overhanging end of the 4th joint (26) is the 4th liquid outlet (261),
Between the 3rd inlet (231) and system feed tube II, be connected by hydraulic lock III (27), hydraulic lock III (27) is made up of the 4th hydraulic control one-way valve (271) and the 4th check valve (272) of differential concatenation, the P mouth of described the 4th hydraulic control one-way valve (271) is connected with the 3rd inlet (231), system feed tube II is connected with the P mouth of the 4th check valve (272), between the 3rd liquid outlet (241) and recoil drain pipe II, be connected by the 5th hydraulic control one-way valve (28), the 3rd liquid outlet (241) is connected with the T mouth of the 5th hydraulic control one-way valve (28), between described the 4th inlet (251) and recoil feed tube II, be connected by the 5th check valve (30), the 4th inlet (251) is connected with the T mouth of the 5th check valve (30), between the 4th liquid outlet (261) and system drain pipe II, be connected by hydraulic lock IV (29), hydraulic lock IV (29) comprises the 6th hydraulic control one-way valve (291) and the 6th check valve (292), the 4th liquid outlet (261) is connected with the T mouth of the 6th hydraulic control one-way valve (291), system drain pipe II is connected with the T mouth of the 6th check valve (292),
Described system feed tube II is connected with the P mouth of state switching valve (3), the A mouth of state switching valve (3) is connected with the oil circuit control of the 3rd hydraulic control one-way valve (191) with the first hydraulic control one-way valve (171) by pipeline, and the B mouth of state switching valve (3) is connected with the oil circuit control of the 6th hydraulic control one-way valve (291) with the 4th hydraulic control one-way valve (271) by pipeline;
In system, be also provided with flushing valve I (4), the B mouth of flushing valve I (4) is connected with the oil circuit control of the second hydraulic control one-way valve (18) with the P mouth of the second check valve (20), and the T mouth of flushing valve I (4) is connected with the T mouth of the 6th check valve (292);
In system, be also provided with flushing valve II (5), the B mouth of flushing valve II (5) is connected with the oil circuit control of the 5th hydraulic control one-way valve (28) with the P mouth of the 5th check valve (30), and the T mouth of flushing valve II (5) is connected with the T mouth of the 3rd check valve (192).
2. backwash twinfilter according to claim 1, is characterized in that, described flushing valve I (4), flushing valve II (5) and state switching valve (3) are the three-position four-way valve of Y type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410349637.1A CN104069673B (en) | 2014-07-22 | 2014-07-22 | Backwash twinfilter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410349637.1A CN104069673B (en) | 2014-07-22 | 2014-07-22 | Backwash twinfilter |
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| Publication Number | Publication Date |
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| CN104069673A true CN104069673A (en) | 2014-10-01 |
| CN104069673B CN104069673B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410349637.1A Expired - Fee Related CN104069673B (en) | 2014-07-22 | 2014-07-22 | Backwash twinfilter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105833594A (en) * | 2016-05-12 | 2016-08-10 | 中国石油大学(华东) | Self-cleaning continuous filtering machine |
| CN109139146A (en) * | 2017-06-15 | 2019-01-04 | 斗山重工业建设有限公司 | Filter automatic flushing device and method and supercritical fluid electricity generation system |
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| US8007669B1 (en) * | 2010-06-24 | 2011-08-30 | Chernoff Larry J | Top loading filter canister system |
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| EP0240220A2 (en) * | 1986-03-25 | 1987-10-07 | Dowty Mining Machinery Limited | Fluid filtering systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105833594A (en) * | 2016-05-12 | 2016-08-10 | 中国石油大学(华东) | Self-cleaning continuous filtering machine |
| CN109139146A (en) * | 2017-06-15 | 2019-01-04 | 斗山重工业建设有限公司 | Filter automatic flushing device and method and supercritical fluid electricity generation system |
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