CN104071926A - V-shaped filter chamber - Google Patents
V-shaped filter chamber Download PDFInfo
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- CN104071926A CN104071926A CN201410331946.6A CN201410331946A CN104071926A CN 104071926 A CN104071926 A CN 104071926A CN 201410331946 A CN201410331946 A CN 201410331946A CN 104071926 A CN104071926 A CN 104071926A
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Abstract
The invention relates to a V-shaped filter chamber, comprising a plurality of main V-shaped filter chamber bodies, an intake device, a discharge device and a backwashing device. The V-shaped filter chamber also comprises top walls, a plurality of manholes, and a control system, wherein each top wall is arranged at the top of each main V-shaped filter chamber body and seals each main V-shaped filter chamber body; the plurality of manholes are formed in the top walls; a person can enter the main V-shaped filter chamber bodies to overhaul through the manholes; the control system is used for monitoring the filtering effect of each main V-shaped filter chamber body and can control the backwashing device to carry out backwashing on the main V-shaped filter chamber bodies when the numerical value of the monitored filtering effect is lower than the set value. By adopting the V-shaped filter chamber, the main V-shaped filter chamber bodies can be completely prevented from being directly irradiated by sunlight, bacteria and microorganisms can be more effectively controlled by a disinfectant in a sealed environment, and propagation of moss is adverse. Furthermore, the V-shaped filter chamber is less in investment and maintenance cost, and the overall appearance is clear and concise. In addition, the control system is convenient to manage and run; meanwhile, manpower is also saved; the V-shaped filter chamber is applicable to advanced treatment of water works.
Description
Technical field
the invention belongs to clean water treatment industry, be specifically related to a kind of V-type filter tank.
Background technology
type filter tank full name is AQUAZUR V-type filter tank, is a kind of rapid filter of being developed by French Degremont S.A, gains the name because water inlet adopts V-type groove.First adopt latter stage in the sixties in Paris Ao Li water factory, and the seventies is widely used in Europe gradually, successively, after state's application such as Italy, Israel, Morocco, Honduras, Venezuela, is subject to various countries' favorable comment, is progressively promoted in the world.Since the eighties, China also recognizes unique developing result of the air-water backwashing technology after external innovation, and Introduced From Abroad advanced person's air-water backwashing technique is successively widely used in new enlarging water factory.
type filter tank, because both sides (or a side also can) inlet flume is designed to V font and gains the name, is provided with row's aperture at the bottom of pond, both can be used as to filter time, intake, again can be for laterally sweeping the water that washes cloth when flushing.The principal feature in V-type filter tank is: 1, can adopt compared with the thicker filtering layer of coarse media to increase filtration cycle.During due to back flushing, filtering layer does not expand, therefore whole filtering layer is substantially even in the size distribution of depth direction, hydraulic classification phenomenon does not occur, i.e. so-called " homogeneous filtering material " makes filtering layer contain dirty ability and improve.General sand filtering material, effective size of grain 0.95-1.50mm, nonuniformity coefficient (1) 2-1.5, the thick about 0.95-1.5m of filtering layer of adopting.2, the recoil of gas, water adds the lateral surfaces existing all the time again and sweeps and wash, and developing result is good, and washing water quantity greatly reduces.
type filter tank is generally uncovered layout, is convenient to observe in real time and intuitively the various running statuses of filter grid, in time according to running condition adjust operation parameter and technique.Overhaul also more convenient, as long as water emptying and carry out safety prevention measure and can carry out.But uncovered layout dust is large, animalcule winged insect flying bird etc. easily enters is drowned, and opened type direct sunlight is easily grown moss.And while carrying out degree of depth water treatment, steel structure canopy or indoor must be done in filter tank, investment maintenance cost is high, and maintenance difficulty is large.The investment cost of steel structure canopy or indoor design is quite high, general about 5 years of steel structure canopy must large-scale maintaining once, and degree-of-difficulty factor is larger.
Summary of the invention
the technical problem to be solved in the present invention is to provide the V-type filter tank that a kind of maintenance cost is low.
for solving the problems of the technologies described above, a kind of technical scheme that the present invention adopts is: a kind of V-type filter tank, comprise multiple V-type filter tank main bodys for filtered water, for the water feed apparatus to each described V-type filter tank main body water inlet, for the discharging device that the clear water after filtering is discharged, for the back-purge system that each described V-type filter tank main body is cleaned, described V-type filter tank also comprises the crown wall that is positioned at the top of each described V-type filter tank main body and each described V-type filter tank main body is sealed, be opened on described crown wall and can enter multiple manholes that described V-type filter tank main body is overhauled for people, the Controlling System of described V-type filter tank main body being carried out to back flushing for monitoring the filter effect of described V-type filter tank main body and the back-purge system described in the filter effect numerical value monitoring can be controlled during lower than set(ting)value.
particularly, described V-type filter tank also comprises multiple cover plates that can be used for observing the situation in described V-type filter tank main body on the crown wall described in being opened in.
particularly, multiple described V-type filter tank main bodys are along the symmetrically arranged two groups of V-type filter tank main body groups of symmetry axis, and the bearing of trend of described symmetry axis is vertical with the bearing of trend of each described V-type filter tank main body.
particularly, described water feed apparatus comprises the total canal of the water inlet for passing into water to be filtered, be connected with the described total canal of water inlet for by the settling tank of described water precipitation to be filtered, the skip-cage combination shaft being connected with described settling tank, be connected for the chemical feed pipe of dosing in the skip-cage combination shaft to described with described skip-cage combination shaft, be arranged in described skip-cage combination shaft the stirrer for water to be filtered and medicine are mixed, the water inlet distributing canal being connected with described skip-cage combination shaft, multiple influent weirs between described water inlet distributing canal and multiple described V-type filter tank main body, for being communicated with multiple water inlet pneumatic gate valves of described water inlet distributing canal and multiple described influent weirs, be opened on described influent weir the prosopyle of the V-type groove for being communicated with described influent weir and described V-type filter tank main body.
particularly, described discharging device comprise many exit branch that are connected with the clear water output of each V-type filter tank main body, the multiple wet wells that are connected with the exit branch described in every, Graceful water valve on the outfall sewer that is connected with each described wet well, exit branch described in being arranged on every.
more specifically, described multiple wet wells and described outfall sewer, between two groups of described V-type filter tank main body groups, are provided with the viewing window for observing situation in described wet well on each described wet well.
particularly, described back-purge system comprises recoil inlet manifold, many recoil air intake branches that are connected with described recoil inlet manifold, recoil air valve on recoil air intake branch described in being arranged on every, the multiple gas distribution pipes that are connected with the recoil air intake branch described in every, recoil water inlet manifold, many recoil water inlet pipes that are connected with described recoil water inlet manifold, recoil water valve on recoil water inlet pipe described in being arranged on every, the multiple water distributing pores that are connected with the recoil water inlet pipe described in every, be arranged on the blow device purging for the top layer of the filtration main body to described on the sidewall of described filtration main body, the total canal of recoil draining being connected with the total canal of filter back washing of each described V-type filter tank main body, multiple draining pneumatic gate valves between the total canal of filter back washing of the V-type filter tank main body described in being arranged on and the described total canal of recoil draining, the water shoot being connected with the described total canal of recoil draining, multiple described gas distribution pipes and multiple described water distributing pore are uniformly distributed along the bearing of trend of described V-type filter tank main body, multiple described gas distribution pipes are arranged on the supporting layer of described V-type filter tank main body, multiple described water distributing pores are arranged on the bottom of described V-type filter tank main body, described recoil inlet manifold and described recoil water inlet manifold are between two groups of described V-type filter tank main body groups.
particularly, described Controlling System comprise the influent turbidity instrument that is arranged on described water feed apparatus, be arranged on delivery turbidity instrument on described discharging device, be arranged on the ultrasonic liquid leveller for detection of water level in described V-type filter tank main body, be arranged on described discharging device, can reflect the aperture valve of filtration situation, for controlling the controller of operation in described V-type filter tank.
particularly, described V-type filter tank also comprises the filtrate to waste pipe of discharging for the water that described V-type filter tank main body is filtered for the first time that is connected with each described V-type filter tank main body.
particularly, described water feed apparatus comprises into water pneumatic gate valve, described discharging device comprises Graceful water valve, described back-purge system comprises recoil air valve, recoil water valve, draining pneumatic gate valve, and described V-type filter tank also comprises gas-holder, drying machine and the air compressor machine for the water inlet pneumatic gate valve to described, Graceful water valve, recoil air valve, recoil water valve, draining pneumatic gate valve air feed.
scope of the present invention, is not limited to the technical scheme that the particular combinations of above-mentioned technical characterictic forms, and also should contain by above-mentioned technical characterictic or its equivalent feature and carry out arbitrary combination and other technical scheme of forming simultaneously.The technical characterictic that such as, in above-mentioned feature and the application disclosed (but being not limited to) has a similar functions is replaced mutually and technical scheme of forming etc.
because technique scheme is used, the present invention compared with prior art has following advantages: the present invention is by adopting crown wall to seal V-type filter tank main body, avoid direct sunlight completely, and the residual sterilizing agent of coming of skip-cage combination shaft can more effectively be controlled bacterium and microorganism under closed environment, is also unfavorable for growing of moss.And, can save many investments and maintaining expense without steel construction structure and interior structure, also very bright and clear, succinct of overall appearance.In addition, by the operation of Controlling System control and monitoring V-type filter tank main body, be convenient to management and operation, also save manpower, be well suited for the utilization of advanced treatment water factory simultaneously.
Brief description of the drawings
accompanying drawing 1 is vertical view of the present invention (one);
accompanying drawing 2 is vertical view of the present invention (two);
accompanying drawing 3 is vertical view of the present invention (three);
accompanying drawing 4 is A-A sectional view of the present invention;
accompanying drawing 5 is B-B sectional view of the present invention;
accompanying drawing 6 is C-C sectional view of the present invention;
wherein: 1, V-type filter tank main body; 2, crown wall; 3, manhole; 4, cover plate; 5, Chi Ti; 6, V-type groove; 7, H type groove; 8, the total canal of filter back washing; 9, sand filter blanket; 10, supporting layer; 11, filter plate; 12, controller; 13, filtrate to waste pipe; 14, gas-holder; 15, drying machine; 16, air compressor machine; 17, gas path pipe; 21, total canal of intaking; 22, settling tank; 23, skip-cage combination shaft; 24, chemical feed pipe; 25, stirrer; 26, water inlet distributing canal; 27, influent weir; 28, water inlet pneumatic gate valve; 29, prosopyle; 30, inflow weir-adjustable plate; 31, overflow weir crest; 41, exit branch; 42, wet well; 43, outfall sewer; 44, Graceful water valve; 45, viewing window; 51, recoil inlet manifold; 52, recoil air valve; 53, gas distribution pipe; 54, recoil water inlet manifold; 55, recoil water valve; 56, water distributing pore; 57, the total canal of recoil draining; 58, draining pneumatic gate valve; 59, water shoot.
Embodiment
as shown in the drawings, a kind of V-type filter tank, comprise multiple V-type filter tank main bodys 1 for filtered water, for the water feed apparatus of intaking to each V-type filter tank main body 1, for the discharging device that the clear water after filtering is discharged, for the back-purge system that each V-type filter tank main body 1 is cleaned, V-type filter tank also comprises the crown wall 2 that is positioned at the top of each V-type filter tank main body 1 and each V-type filter tank main body 1 is sealed, be opened on crown wall 2 and can enter multiple manholes 3 that V-type filter tank main body 1 is overhauled for people, for monitoring the filter effect of V-type filter tank main body 1 and can controlling the Controlling System that back-purge system carries out back flushing to V-type filter tank main body 1 during lower than set(ting)value when the filter effect numerical value monitoring.V-type filter tank also comprises and is opened in multiple cover plates 4 that can be used for observing the situation in V-type filter tank main body 1 on crown wall 2.Preferably, cover plate 4 is toughened glass.
multiple V-types filter tank main body 1 is that the bearing of trend of symmetry axis is vertical with the bearing of trend of each V-type filter tank main body 1 along the symmetrically arranged two groups of V-type filter tank main body groups of symmetry axis.If accompanying drawing 1 is to as shown in accompanying drawing 3, every group of V-type filter tank main body group has between 1, two group of V-type filter tank main body group of three V-type filter tank main bodys and has watch-keeping cubicle.As shown in Figure 4, each V-type filter tank main body 1 comprise opening upwards pond body 5, be filled in filtering layer in pond body 5, be arranged on pond body 5 relative both sides, top two V-type grooves 6, be arranged on the H type groove 7 in the middle of pond body 5, the top of H type groove 7 is that the total canal 8 of filter back washing, bottom are clear water output, and filtering layer is followed successively by sand filter blanket 9, supporting layer 10 and filter plate 11 under upper.In addition, the concrete structure of each V-type filter tank main body 1 can be with reference to conventional V-type filter tank.
as accompanying drawing 1, 2, 4, shown in 6, water feed apparatus comprises the total canal 21 of the water inlet for passing into water to be filtered, be connected for by the settling tank of water precipitation to be filtered 22 with the total canal 21 of water inlet, the skip-cage combination shaft 23 being connected with settling tank 22, be connected with skip-cage combination shaft 23 for the chemical feed pipe 24 to skip-cage combination shaft 23 interior dosings, be arranged in skip-cage combination shaft 23 stirrer 25 for water to be filtered and medicine are mixed, the water inlet distributing canal 26 being connected with skip-cage combination shaft 23, multiple influent weirs 27 between water inlet distributing canal 26 and multiple V-types filter tank main body 1, for being communicated with multiple water inlet pneumatic gate valves 28 of water inlet distributing canal 26 and multiple influent weir 27, be opened on influent weir 27 prosopyle 29 of the V-type groove 6 for being communicated with influent weir 27 and V-type filter tank main body 1.
the front side of every group of V-type filter tank main body group is provided with a settling tank 22 and a skip-cage combination shaft 23, two settling tanks 22 are communicated with water inlet together by total canal 21 of intaking, every group of V-type filter tank main body group is provided with a water inlet distributing canal 26, and water inlet distributing canal 26 is positioned at the outside of every group of V-type filter tank main body group.On influent weir 27, be provided with inflow weir-adjustable plate 30 and overflow weir crest 31.
as shown in accompanying drawing 2,4,5, discharging device comprises the many exit branch 41 that are connected with the clear water output of each V-type filter tank main body 1, the multiple wet wells 42 that are connected with every exit branch 41, the outfall sewer 43 being connected with each wet well 42, is arranged on the Graceful water valve 44 on every exit branch 41.In wet well 42 and outfall sewer 43 watch-keeping cubicle between two groups of V-type filter tank main body groups, on each wet well 42, be provided with the viewing window 45 for observing wet well 42 interior situations.
as accompanying drawing 2, 5, described in 6, back-purge system comprises recoil inlet manifold 51, many recoil air intake branches that are connected with recoil inlet manifold 51, be arranged on every recoil air valve 52 on recoil air intake branch, the multiple gas distribution pipes 53 that are connected with every recoil air intake branch, recoil water inlet manifold 54, many recoil water inlet pipes that are connected with recoil water inlet manifold 54, be arranged on every recoil water valve 55 on recoil water inlet pipe, the multiple water distributing pores 56 that are connected with every recoil water inlet pipe, be arranged on the blow device for the top layer of V-type filter tank main body 1 is purged on the sidewall of V-type filter tank main body 1, the total canal 57 of recoil draining being connected with the total canal 8 of filter back washing of each V-type filter tank main body 1, be arranged on the total canal 8 of filter back washing of V-type filter tank main body 1 and the multiple draining pneumatic gate valves 58 that recoil between the total canal 57 of draining, the water shoot 59 being connected with the total canal 57 of recoil draining, multiple gas distribution pipes 53 and multiple water distributing pore 56 are uniformly distributed along the bearing of trend of V-type filter tank main body 1, multiple gas distribution pipes 53 are arranged on the supporting layer 10 of V-type filter tank main body 1, and multiple water distributing pores 56 are arranged on the bottom of V-type filter tank main body 1.In recoil inlet manifold 51 and the watch-keeping cubicle of recoil water inlet manifold 54 between two groups of V-type filter tank main body groups.
controlling System (without accompanying drawing) comprises the influent turbidity instrument that is arranged on water feed apparatus, be arranged on delivery turbidity instrument on discharging device, be arranged on the ultrasonic liquid leveller for detection of water level in V-type filter tank main body 1, be arranged on discharging device, can reflect the aperture valve of filtration situation, for controlling the controller 12 of operation in V-type filter tank.Controlling System also comprises many stopple coupons that are arranged on water feed apparatus, discharging device.Influent turbidity instrument and delivery turbidity instrument can intuitively reflect the running condition of whole group of V-type filter tank main body 1, by main body 1 Inlet and outlet water turbidity in V-type filter tank being contrasted to the rejection effect (also claim filter effect) of reaction filter tank to impurity, thereby by V-type filter tank main body 1 running condition Real-time Feedback to production run personnel, if rejection effect, lower than 80%, will carry out back flushing to V-type filter tank main body 1.V-type filter tank main body 1 adopts permanent water level control, and water level situation when ultrasonic liquid leveller monitoring V-type filter tank main body 1 is moved, if in the constant situation of liquid level, Graceful water valve 44 apertures become greatly gradually, show the 1 operation conditions decline of V-type filter tank main body, need back flushing.Aperture valve is contained on Graceful water valve 44, can show valve opening per-cent, intuitively reflects V-type filter tank main body 1 running condition, and it is less that the larger explanation V-type of aperture filter tank main body 1 is filtered the water yield, reminds producers that this carries out back flushing to V-type filter tank main body 1.Controller 12 adopts PLC controlling board, in the watch-keeping cubicle of PLC controlling board between two groups of V-type filter tank main body groups.By PLC time variable control, according to Water And Drainage System Design code requirement, the flushing cycle of general sand filter is (45 ~ 48) hour, and filter tank will enter auto-flushing by time variable control after reaching this set(ting)value, and flush time and intensity can manually be adjusted.
as described in accompanying drawing 2,5,6, V-type filter tank also comprises the filtrate to waste pipe 13 being connected with each V-type filter tank main body 1 for first V-type filter tank main body 1 water filtering is discharged, and filtrate to waste pipe 13 is in the watch-keeping cubicle between 1 group of two groups of V-type filter tank main body.After make in V-type filter tank, need first filter tank to be cleaned and after replacing filtrate, filtrate is rinsed, the water after now cleaning is discharged by filtrate to waste pipe 13.
as shown in Figure 3, V-type filter tank also comprises for gas-holder 14, drying machine 15 and air compressor machine 16 to water inlet pneumatic gate valve 28, Graceful water valve 44, recoil air valve 52, recoil water valve 55, draining pneumatic gate valve 58 air feed.In gas-holder 14, drying machine 15 and air compressor machine 16 watch-keeping cubicle between two groups of V-type filter tank main body groups.The dry gas producing by gas-holder 14, drying machine 15 and air compressor machine 16 is delivered to into water pneumatic gate valve 28, Graceful water valve 44, recoil air valve 52, recoil water valve 55, draining pneumatic gate valve 58 air feed by gas path pipe 17.
as mentioned above, we are illustrated according to aim of the present invention completely, but the present invention is not limited to above-described embodiment and implementation method.The practitioner of correlative technology field can carry out different variations and enforcement in the scope of technological thought license of the present invention.
Claims (10)
1. a V-type filter tank, comprise multiple V-type filter tank main bodys (1) for filtered water, for the water feed apparatus to each described V-type filter tank main body (1) water inlet, for the discharging device that the clear water after filtering is discharged, for the back-purge system that each described V-type filter tank main body (1) is cleaned, it is characterized in that: described V-type filter tank also comprises the crown wall (2) that is positioned at the top of each described V-type filter tank main body (1) and each described V-type filter tank main body (1) is sealed, be opened on described crown wall (2) and can enter multiple manholes (3) that described V-type filter tank main body (1) is overhauled for people, the Controlling System of described V-type filter tank main body (1) being carried out to back flushing for monitoring the filter effect of described V-type filter tank main body (1) and the back-purge system described in the filter effect numerical value monitoring can be controlled during lower than set(ting)value.
2. V-type according to claim 1 filter tank, is characterized in that: described V-type filter tank also comprises multiple cover plates (4) that can be used for observing the situation in described V-type filter tank main body (1) on the crown wall (2) described in being opened in.
3. V-type according to claim 1 filter tank, it is characterized in that: multiple described V-type filter tank main bodys (1) are along the symmetrically arranged two groups of V-type filter tank main body groups of symmetry axis, and the bearing of trend of described symmetry axis is vertical with the bearing of trend of each described V-type filter tank main body (1).
4. according to the V-type filter tank described in claim 1 or 3, it is characterized in that: described water feed apparatus comprises the total canal of the water inlet for passing into water to be filtered (21), be connected with the described total canal of water inlet (21) for by the settling tank of described water precipitation to be filtered (22), the skip-cage combination shaft (23) being connected with described settling tank (22), be connected for the chemical feed pipe (24) of the interior dosing of the skip-cage combination shaft to described (23) with described skip-cage combination shaft (23), be arranged in described skip-cage combination shaft (23) stirrer (25) for water to be filtered and medicine are mixed, the water inlet distributing canal (26) being connected with described skip-cage combination shaft (23), be positioned at the multiple influent weirs (27) between described water inlet distributing canal (26) and multiple described V-type filter tank main body (1), for being communicated with multiple water inlet pneumatic gate valves (28) of described water inlet distributing canal (26) and multiple described influent weirs (27), be opened in described influent weir (27) upper for being communicated with the prosopyle (29) of V-type groove (6) of described influent weir (27) and described V-type filter tank main body (1).
5. according to the V-type filter tank described in claim 1 or 3, it is characterized in that: the Graceful water valve (44) on outfall sewer (43) that described discharging device comprises the many exit branch (41) that are connected with the clear water output of each V-type filter tank main body (1), the multiple wet wells (42) that are connected with the exit branch (41) described in every, be connected with each described wet well (42), exit branch (41) described in being arranged on every.
6. V-type according to claim 5 filter tank, it is characterized in that: described multiple wet wells (42) and described outfall sewer (43), between two groups of described V-type filter tank main body groups, are provided with the viewing window (45) for observing the described interior situation of wet well (42) on each described wet well (42).
7. according to the V-type filter tank described in claim 1 or 3, it is characterized in that: described back-purge system comprises recoil inlet manifold (51), many recoil air intake branches that are connected with described recoil inlet manifold (51), recoil air valve (52) on recoil air intake branch described in being arranged on every, the multiple gas distribution pipes (53) that are connected with the recoil air intake branch described in every, recoil water inlet manifold (54), many recoil water inlet pipes that are connected with described recoil water inlet manifold (54), recoil water valve (55) on recoil water inlet pipe described in being arranged on every, the multiple water distributing pores (56) that are connected with the recoil water inlet pipe described in every, be arranged on the blow device purging for the top layer of the filtration main body to described on the sidewall of described filtration main body, the total canal of recoil draining (57) being connected with the total canal of filter back washing (8) of each described V-type filter tank main body (1), multiple draining pneumatic gate valves (58) between the total canal of filter back washing (8) of the V-type filter tank main body (1) described in being arranged on and the described total canal of recoil draining (57), the water shoot (59) being connected with the described total canal of recoil draining (57), multiple described gas distribution pipes (53) and multiple described water distributing pore (56) are uniformly distributed along the bearing of trend of described V-type filter tank main body (1), multiple described gas distribution pipes (53) are arranged on the supporting layer (10) of described V-type filter tank main body (1), multiple described water distributing pores (56) are arranged on the bottom of described V-type filter tank main body (1), described recoil inlet manifold (51) and described recoil water inlet manifold (54) are positioned between described two groups of V-type filter tank main bodys (1) group.
8. according to the V-type filter tank described in claim 1 or 3, it is characterized in that: described Controlling System comprises the influent turbidity instrument that is arranged on described water feed apparatus, be arranged on delivery turbidity instrument on described discharging device, be arranged on the ultrasonic liquid leveller for detection of water level in described V-type filter tank main body (1), be arranged on described discharging device, can reflect the aperture valve of filtration situation, for controlling the controller (12) of operation in described V-type filter tank.
9. according to the V-type filter tank described in claim 1 or 3, it is characterized in that: described V-type filter tank also comprises with each described V-type filter tank main body (1) and being connected for the filtrate to waste pipe (13) that first described V-type filter tank main body (1) water filtering is discharged.
10. according to the V-type filter tank described in claim 1 or 3, it is characterized in that: described water feed apparatus comprises into water pneumatic gate valve (28), described discharging device comprises Graceful water valve (44), described back-purge system comprises recoil air valve (52), recoil water valve (55), draining pneumatic gate valve (58), described V-type filter tank also comprises for the water inlet pneumatic gate valve (28) to described, Graceful water valve (44), recoil air valve (52), recoil water valve (55), the gas-holder (14) of draining pneumatic gate valve (58) air feed, drying machine (15) and air compressor machine (16).
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| CN104606931A (en) * | 2015-01-28 | 2015-05-13 | 张汉桥 | V-shaped filter pond and process utilizing same |
| CN104784990A (en) * | 2015-04-24 | 2015-07-22 | 中国能源建设集团广东省电力设计研究院有限公司 | Dispatching method and system for backwashing devices |
| CN117964021A (en) * | 2024-03-29 | 2024-05-03 | 兴泰建设集团有限公司 | V-shaped filter tank for sewage treatment |
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| CN104606931A (en) * | 2015-01-28 | 2015-05-13 | 张汉桥 | V-shaped filter pond and process utilizing same |
| CN104784990A (en) * | 2015-04-24 | 2015-07-22 | 中国能源建设集团广东省电力设计研究院有限公司 | Dispatching method and system for backwashing devices |
| CN117964021A (en) * | 2024-03-29 | 2024-05-03 | 兴泰建设集团有限公司 | V-shaped filter tank for sewage treatment |
| CN117964021B (en) * | 2024-03-29 | 2024-06-07 | 兴泰建设集团有限公司 | V-shaped filter tank for sewage treatment |
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