CN111138014A - Secondary water supply tank and method - Google Patents
Secondary water supply tank and method Download PDFInfo
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- CN111138014A CN111138014A CN202010061086.4A CN202010061086A CN111138014A CN 111138014 A CN111138014 A CN 111138014A CN 202010061086 A CN202010061086 A CN 202010061086A CN 111138014 A CN111138014 A CN 111138014A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 348
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004062 sedimentation Methods 0.000 claims abstract description 84
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 239000010865 sewage Substances 0.000 claims abstract description 11
- 238000005352 clarification Methods 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 12
- 239000008399 tap water Substances 0.000 claims description 10
- 235000020679 tap water Nutrition 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 230000001954 sterilising effect Effects 0.000 claims description 2
- 230000000994 depressogenic effect Effects 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 9
- 239000010410 layer Substances 0.000 description 42
- 230000000694 effects Effects 0.000 description 9
- 238000004659 sterilization and disinfection Methods 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
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- Sewage (AREA)
Abstract
The invention discloses a secondary water supply tank and a method, which comprises a tank body and is characterized in that: this internal vertical barricade that is equipped with two mutually perpendicular of water tank, divide into the three region that the upper portion space is linked together with the water tank body, be the intake pond according to the rivers direction, sedimentation tank and clean water basin, the intake pond is adjacent with the sedimentation tank, separate by first barricade between, the bottom of first barricade is equipped with the inhalant canal of intercommunication intake pond and sedimentation tank, separate by the second barricade between two ponds and the clean water basin, the top of second barricade is equipped with the overflow path who communicates sedimentation tank and clean water basin, be equipped with a plurality of sedimentation units in the sedimentation tank, municipal administration water pipeline is connected with the intake pond, pipeline port department is equipped with the water intaking valve, be equipped with the liquid level detection mechanism who is used for switching water intaking valve on-off state in the clean water basin, the sedimentation tank bottom is equipped with sewage: the sedimentation efficiency is high, the cleaning is convenient, and meanwhile, the normal secondary water supply of residents is not influenced.
Description
Technical Field
The invention relates to the field of urban and rural secondary water supply, in particular to a secondary water supply tank and a method.
Background
The safety guarantee of drinking water is closely related to the life health of people and the sustainable development of economic society, and is an important mark of the development level of modern cities and the quality of life of urban and rural residents. Tap water treated by a water plant is conveyed to each household through a huge municipal pipeline system for secondary water supply, and nowadays more and more communities are provided with water tanks underground for storing tap water and then conveyed to households through a pressurizing pump. Generally, tap water treated by a water plant can meet the national drinking water sanitation standard, but a huge underground pipe network system is like a large-scale reactor, and a lot of water quality problems mainly occur in the intermediate links between the water plant and the water faucet of each household. On one hand, the problems of aging corrosion of pipeline materials of the underground pipe network system, leakage of joint points of water pipes, falling of coatings on the inner walls of metal pipelines and the like are brought about by substances which are main sources of 'secondary pollution', wherein municipal pipe network secondary pollutants mainly comprise metal corrosion products, soluble organic matters, mud and sand suspended matters mixed into the pipe network and the like. On the other hand, when water supply equipment such as a water tank and a water pump is used for secondary water supply, the problem of pollution is easily caused due to poor management or untimely maintenance, and the safety of domestic water is affected.
And the pollution problem of the secondary water supply system has universality, multiplicity and uncertainty. Because the central urban area scope is continuously enlarged, the work load of old pipe transformation is big, the construction degree of difficulty is high, operations such as cutting off the water supply and takeover are big to the water supply system disturbance, consequently can't thoroughly clear up the underground water supply pipe network for the "secondary pollution" problem of running water in the transportation process does not fundamentally obtain solving, still has the gap between city running water quality of residence and people's life demand.
In addition, when the secondary water supply tank is periodically maintained or cleaned, there are still some problems: on one hand, because the water tank is large in volume, the sediments accumulated for a long time are distributed on the inner walls of the water tank, so that the cleaning task of workers is heavy; on the other hand, when the water tank is cleaned, the secondary water supply for the residents is required to be suspended, and the water supply is resumed after the water tank is cleaned or maintained, so that the water consumption of the residents is greatly inconvenient, in addition, the disturbance of the secondary water supply system caused by the water cut-off maintenance is increased, the possibility of water quality pollution of the water supply in stages or in a sudden manner is caused, and the secondary water supply quality of regional users is also influenced.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the secondary water supply tank and the method, which can carry out enhanced precipitation on secondary water supply, remove secondary pollutants, have high precipitation efficiency and do not influence the normal secondary water supply of residents during cleaning.
The technical scheme adopted by the invention for solving the technical problems is as follows: a secondary water supply tank comprises a tank body, wherein two retaining walls which are vertical to each other are vertically arranged in the tank body, the tank body is divided into three areas which are communicated with each other in the upper space, a water inlet pool, a sedimentation pool and a clean water pool are sequentially arranged according to the water flow direction, the water inlet pool is adjacent to the sedimentation pool and is separated by a first retaining wall, the bottom of the first retaining wall is provided with a water inlet channel communicated with the water inlet pool and the sedimentation pool, the two pools and the clean water pool are separated by a second retaining wall, the top of the second retaining wall is provided with an overflow channel communicated with the sedimentation pool and the clean water pool, a plurality of sedimentation units used for blocking the passing of particulate matters are arranged in the sedimentation pool, a municipal water pipeline is connected with the water inlet pool, and one end of the municipal water pipeline entering the water inlet pool is provided with a water inlet valve, the clean water tank in be provided with water intaking valve connection and be used for switching water intaking valve on-off state's liquid level detection mechanism, the bottom of sedimentation tank be provided with the blowdown pipeline, the blowdown pipeline on be provided with the blowoff valve, the rear side and the secondary water supply pipe connection of clean water tank.
In some embodiments, the first retaining wall the second retaining wall with the water tank body all adopt the same material, the second retaining wall including separate the intake chamber with the second retaining wall A section of clean water pond and separate the sedimentation tank with the second retaining wall B section of clean water pond, second retaining wall A section with first retaining wall height the same, the height of second retaining wall B section be less than the height of second retaining wall A section, the difference in height scope is at 50 ~ 150mm, the top of second retaining wall B section form overflow channel. From this can guarantee that the liquid level height of intake pool, sedimentation tank and clean water basin reduces gradually, forms the liquid level difference, and under the normal water supply condition, water flows through these three ponds of intake pool, sedimentation tank and clean water basin in proper order under the action of gravity that the liquid level difference formed, realizes filtering.
In some embodiments, the sedimentation tank sequentially comprises a buffer layer, a baffling layer and a clarifying layer from bottom to top, the buffer layer is communicated with the water inlet pool through the water inlet channel, the clarification layer is communicated with the clean water pool through the overflow channel, the sedimentation unit is a hollow inclined tube, a plurality of inclined tubes are obliquely arranged on the baffling layer, the two ends of the inclined tubes are respectively communicated with the buffer layer and the clarification layer, the cross sections of the inclined tubes are all regular hexagons, the adjacent inclined tubes are tightly connected and arranged in an array shape, the pipe chute from top to bottom keep away from the direction slope of first barricade, make rivers be reverse Z style of calligraphy and pass through in proper order by supreme down the buffer layer the pipe chute with the clarification layer, get into with the overflow mode from overflow passage the clean water basin. The water from the water inlet tank enters the sedimentation tank from the bottom of the first retaining wall, sequentially passes through the buffer layer, the baffling layer and the clarification layer from bottom to top, the purified water enters the clean water tank from the clarification layer in an overflow mode, and the impurities are blocked by the inner wall of the inclined tube of the baffling layer under the action of water flow and gravity and are accumulated at the bottom of the sedimentation tank; this spatial structure makes rivers change the flow direction many times, and impurity such as suspended particles is kept off under the inertia and is fallen and deposit on the lower half side inner wall of pipe chute, along the pipe chute deposit to sedimentation tank bottom or wash away by wasing water, has better precipitation effect to secondary pollutant such as suspended particles from this.
In some embodiments, the bottom of the overflow channel is provided with an overflow weir, the overflow weir is composed of a plurality of horizontally arranged concave overflow chutes, and the cross section of each overflow chute is triangular, circular arc, rectangular or inverted trapezoid. Thereby further settling and stabilizing the water flow.
In some embodiments, the height ratio of the buffer layer, the baffling layer and the clarification layer is (5-10): 10 (5-10), and the inclined angle of the inclined tube in the horizontal direction is 45-60 degrees. The height of each functional layer and the inclined angle of the inclined tube are specially selected, and the sedimentation filtering effect and the sedimentation efficiency are better.
In some embodiments, the liquid level detection mechanism includes a floating ball disposed in the clean water tank, the floating ball is connected to the water inlet valve through a connecting rod, the connecting rod spans above the second retaining wall, a set water level is disposed in the clean water tank, and the floating ball controls the water inlet valve to open when the water level in the clean water tank is lower than the set water level; when the water level in the clean water tank is higher than or equal to the set water level, the floating ball controls the water inlet valve to be closed, and the liquid level detection mechanism can control water inlet in another tank (water inlet tank) through the liquid level in the clean water tank, so that the liquid level of the water inlet tank, the liquid level of the sedimentation tank and the liquid level of the clean water tank are gradually reduced to form a liquid level difference.
In some embodiments, the height of the bottom end of the first retaining wall is 25-100 cm. Therefore, the device has better effect, prevents blockage and is convenient to overhaul.
In some embodiments, the volume ratio of the inlet tank to the sedimentation tank is in the range of: 1: 1-1: 9, the ratio of the volume of the water inlet pool plus the sedimentation pool to the volume of the clean water pool is in the range: 1: 9-1: 1. The volume of three ponds is the specific selection, combines above-mentioned other structures to constitute this scheme jointly, realizes the water tank and deposits and the dynamic balance of supplying water, has better effect.
In some embodiments, the device further comprises a disinfection device, wherein the disinfection device is arranged in the clean water tank or on the secondary water supply pipeline. The disinfection device can adopt ultraviolet or ozone disinfection, thereby further purifying the quality of secondary water supply.
A secondary water supply method adopting the secondary water supply tank comprises the following steps: opening a water inlet valve, enabling municipal water to enter a water inlet pool in a mode of feeding water above the liquid level and then flow to a sedimentation tank from a water inlet channel at the bottom, deflecting the municipal water in a reverse Z shape from bottom to top and passing through an inclined tube sedimentation unit, enabling purified tap water to overflow from the top to a clean water pool for storage, and opening a valve of a secondary water supply pipeline to supply the purified tap water to residents; settling suspended particles in water in the opposite direction, depositing at the bottom of a settling pond, and discharging through a bottom sewage discharge pipeline; when the liquid level detection mechanism detects that the liquid level of the clean water tank is lower than the set water level, the water inlet valve is automatically opened, and when the liquid level detection mechanism detects that the liquid level of the clean water tank is higher than or equal to the set water level, the water inlet valve is controlled to be closed.
Compared with the prior art, the invention has the advantages that:
(1) the original water tank is divided into a water inlet pool, a sedimentation pool and a clean water pool by arranging two retaining walls, sedimentation units such as inclined pipes are arranged in the sedimentation pool for strengthening sedimentation, so that municipal water is fed into the sedimentation pool through the first retaining wall downwards after falling into the water inlet pool in a mode of feeding water above the liquid level, is precipitated and purified in the process of flowing upwards in the sedimentation pool, is fed into the clean water pool from the top of the second retaining wall in an overflow mode for storage, and is pressurized and conveyed to residents through a secondary water supply pipeline arranged below the liquid level by a pump set; the particles in the water are deposited in the sedimentation tank and discharged out of the water tank through a sewage discharge outlet arranged at the bottom. Under the condition of same residence time, the precipitation efficiency can be improved by 3 to 5 times, and the effect of removing suspended particle secondary pollutants is good;
(2) in the invention, secondary pollutants are intensively precipitated and filtered at the bottom of the sedimentation tank, so that the cleaning range is greatly reduced, the pollution discharge is convenient and fast, the problems of large cleaning range, narrow operation space and heavy cleaning task depending on manpower of the existing water tank are solved, and the manpower and the cost are greatly saved;
(3) the liquid level detection mechanism is arranged in the clean water tank and used for controlling the opening and closing of the water inlet valve in the water inlet tank, so that the water inlet in the water inlet tank can be controlled through the liquid level in the clean water tank, the liquid level of the water inlet tank is ensured to be always higher than the liquid level of the sedimentation tank and higher than the liquid level of the clean water tank, the liquid level difference of three tanks is formed, and the proceeding and the effect of sedimentation and filtration are ensured;
(4) the normal secondary water supply of the residents is not influenced while the sedimentation tank is cleaned, and convenience is provided for the residents.
Drawings
FIG. 1 is a front view of an embodiment of a secondary water supply tank according to the present invention;
FIG. 2 is a side perspective view of an embodiment of a secondary water supply tank of the present invention;
FIG. 3 is a side view of an embodiment of a secondary water supply tank according to the present invention;
FIG. 4 is a plan view of an embodiment of a secondary water supply tank according to the present invention;
FIG. 5 is a schematic cross-sectional view illustrating an inclined tube according to an embodiment of a secondary water supply tank of the present invention.
The water tank comprises a water tank body 1, a first retaining wall 2, a second retaining wall 3, a second retaining wall A section 31, a second retaining wall B section 32, a water inlet tank 4, a sedimentation tank 5, a buffer layer 51, a baffling layer 52, a clarification layer 53, an overflow weir 54, an overflow trough 55, a clean water tank 6, a water inlet channel 7, an overflow channel 8, a municipal water pipeline 9, a water inlet valve 10, a sewage discharge pipeline 11, a sewage discharge valve 12, a secondary water supply pipeline 13, an inclined pipe 14, a floating ball 15, a connecting rod 16, a sterilizing device 17, a water flowmeter 18, a first valve 19, a filter 20, a second valve 21 and a water supply pump 22.
Detailed Description
The secondary water supply tank and the method of the present invention will be described in further detail with reference to the accompanying drawings and examples, but the present invention is not limited thereto.
Example one
As shown in the figure, a secondary water supply tank, including water tank body 1, vertically in the water tank body 1 be provided with two mutually perpendicular's barricades: first barricade 2 and second barricade 3 divide into the three region that the upper portion space is linked together with water tank body 1, according to the rivers direction, are intake chamber 4, sedimentation tank 5 and clean water basin 6 in proper order. The first retaining wall 2 and the second retaining wall 3 are spaced apart from the top wall of the tank body 1 so that the upper parts of the three tanks are communicated.
The water inlet tank 4 is adjacent to the sedimentation tank 5 and is separated by the first retaining wall 2, and the bottom of the first retaining wall 2 is provided with a water inlet channel 7 for communicating the water inlet tank 4 with the sedimentation tank 5. The intake pond 4 sets up in one side with sedimentation tank 5 jointly, and clean water basin 6 sets up at the opposite side, is kept off wall 3 by the second between and separates, and the overflow path 8 of intercommunication sedimentation tank 5 and clean water basin 6 is seted up at the top that the wall 3 was kept off to the second. A plurality of sedimentation units used for blocking particles are arranged in the sedimentation tank 5, the municipal water pipeline 9 is connected with the water inlet tank 4, one end, entering the water inlet tank 4, of the municipal water pipeline 9 (namely the water outlet end of the municipal water pipeline 9) is arranged above the liquid level, a water inlet valve 10 is arranged on the pipeline, and the arrangement height of the water inlet valve 10 is higher than the heights of the first retaining wall and the second retaining wall. A liquid level detection mechanism connected to the water inlet valve 10 and used for switching the open/close state of the water inlet valve 10 is provided in the clean water tank 6. The bottom of sedimentation tank 6 is provided with sewage pipes 11, is provided with blowoff valve 12 on the sewage pipes 11, is connected with secondary water supply pipe 13 below the rear side liquid level of clean water basin 6, and secondary water supply pipe 13 is used for supplying water to the resident family.
In this embodiment, municipal water is fed into the water inlet tank from above the liquid level, and then fed into the sedimentation tank through the water inlet channel at the bottom of the first retaining wall, and then fed into the clean water tank for storage through the overflow channel at the top of the second retaining wall in an overflow manner, and then fed into the secondary water supply pipeline below the liquid level by the pump unit under pressure. The particles in the water are deposited in the sedimentation tank and discharged out of the water tank through a sewage discharge pipeline arranged at the bottom.
In this embodiment, the first retaining wall 2 and the second retaining wall 3 are made of the same material as the water tank body 1, the second retaining wall 3 includes a second retaining wall a section 31 for separating the water inlet tank 4 and the clean water tank 6 and a second retaining wall B section 32 for separating the sedimentation tank 5 and the clean water tank 6, the second retaining wall a section 31 is as high as the first retaining wall 2, the second retaining wall B section 32 is lower than the second retaining wall a section 31, the height difference range is 50-150 mm, and the overflow channel 8 is formed above the second retaining wall B section 32. The liquid level height that can guarantee intake pond, sedimentation tank and clean water basin reduces gradually from this, forms the liquid level difference, and under the normal water supply condition, water flows through these three ponds of intake pond, sedimentation tank and clean water basin in proper order under the action of gravity that the liquid level difference formed, realizes filtering. In other embodiments, the width of the second retaining wall B section 32 can be reduced appropriately, and the width of the second retaining wall a section 31 is increased accordingly, i.e. the width of the overflow channel 8 is reduced appropriately, so that the settling and purifying path of the tap water can be increased appropriately, and a better effect can be obtained.
Example two
The secondary water supply tank provided by the embodiment is further limited on the structure of the sedimentation tank 5 on the basis of the first embodiment. In this embodiment, the sedimentation tank 5 includes, from bottom to top, a buffer layer 51, a baffle layer 52, and a clarification layer 53 in this order. Wherein, the buffer layer 51 is communicated with the water inlet tank 4 through the water inlet channel 7, and the clarification layer 53 is communicated with the clean water tank 6 through the overflow channel 8. In this embodiment, the sedimentation unit is a hollow inclined tube 14, a plurality of inclined tubes 14 are obliquely arranged on the baffling layer 52, two ends of the inclined tubes 14 are respectively communicated with the buffer layer 51 and the clarifying layer 53, and water flows through the hollow inclined tube 14.
In this embodiment, the water that comes from the intake chamber gets into the sedimentation tank from first barricade bottom, passes through buffer layer, baffling layer and clarification layer from bottom to top in proper order, and the clear water gets into the clean water basin with the overflow mode from the clarification layer, and impurity is then kept off by the pipe chute inner wall on baffling layer under rivers and action of gravity, accumulates in the bottom of sedimentation tank.
In this embodiment, the cross section of pipe chute 14 is regular hexagon, the inscribed circle diameter of pipe chute 14 is 50mm, inscribed circle diameter also can be 35mm in other embodiments, 85mm etc. closely link to each other between the adjacent pipe chute 14 and arrange into the array form, pipe chute 14 can set up one row and also can set up the multirow, pipe chute 14 from top to bottom inclines towards the direction of keeping away from first barricade 2, make rivers be reverse Z style of calligraphy baffling, from bottom to top passes through buffer layer 51, pipe chute 14 and clarification layer 53 in proper order, get into clean water basin 6 from overflow path 8. This spatial structure makes rivers change the flow direction many times, and impurity such as suspended particles is kept off under the inertia and is fallen and deposit on the lower half side inner wall of pipe chute, along the pipe chute deposit to sedimentation tank bottom or wash away by wasing water, has better precipitation effect to secondary pollutant such as suspended particles from this.
EXAMPLE III
The rest of the structure is the same as the embodiment, except that: in this embodiment, the precipitation unit is the swash plate, and a plurality of swash plates are parallel to each other and arrange in baffling layer 52 in the slope, and buffer layer 51 and clarification layer 53 are connected respectively to the both ends of swash plate, and rivers pass through between the adjacent swash plate, and impurity such as suspended particles is kept off under the inertia effect and is fallen and deposit at the upper surface of swash plate, and deposit to the sedimentation tank bottom or wash away by wasing water along the swash plate.
Example four
The secondary water supply tank provided by the embodiment is further limited in structure of the sedimentation tank 5 on the basis of any one of the above embodiments. In this embodiment, the bottom of the overflow channel 8 is provided with an overflow weir 54, the overflow weir 54 is formed by a plurality of horizontally arranged concave overflow chutes 55, the cross section of each overflow chute 55 is triangular, circular arc, rectangular or inverted trapezoid, and the top end of the overflow weir 54 is lower than the height of the second retaining wall a section 31.
EXAMPLE five
The secondary water supply tank provided by the embodiment is further limited in structure of the sedimentation tank 5 on the basis of the second or third embodiment. In this embodiment, the height ratio of the buffer layer 51, the baffling layer 52 and the clarifying layer 53 is 6:10:6, in other embodiments, the height ratio may be 5:10:5, 10:10:10, and the included angle between the inclined tube 14 and the horizontal direction is 45-60 °.
EXAMPLE six
The secondary water supply tank provided by the embodiment further defines the structure of the liquid level detection mechanism on the basis of the first embodiment. In this embodiment, the liquid level detection mechanism includes a floating ball 15 disposed in the clean water tank 6, the floating ball 15 is connected to the water inlet valve 10 through a connecting rod 16, the connecting rod 16 is disposed above the second blocking wall 3 in a straddling manner, a set water level is disposed in the clean water tank 6, and when the water level in the clean water tank 6 is lower than the set water level, the floating ball 15 controls the water inlet valve 10 to open; when the water level in the clean water tank 6 is higher than or equal to the set water level, the floating ball 15 controls the water inlet valve 10 to be closed, so that the liquid level of the water inlet tank 4, the liquid level of the sedimentation tank 5 and the liquid level of the clean water tank 6 are gradually reduced to form a liquid level difference, and sufficient water quantity in the clean water tank can be ensured, so that secondary water supply of residents is ensured.
EXAMPLE seven
The secondary water supply tank provided by the embodiment is further improved in the rest structure on the basis of any one of the embodiments. In this embodiment, the bottom of the first retaining wall 2 is provided with a water inlet channel 7, so that the water inlet tank 4 is communicated with the bottom of the sedimentation tank 5, and the bottom of the first retaining wall 2 is 25-100 cm high.
In this embodiment, the volume ratio range of the water inlet tank 4 and the sedimentation tank 5 is: 1: 1-1: 9, the ratio of the volume of the water inlet tank 4 plus the sedimentation tank 5 to the volume of the clean water tank 6 (namely, the left tank and the right tank separated by the second retaining wall) is: 1: 9-1: 1.
In this embodiment, the water supply device further comprises an ultraviolet disinfection device 17, the disinfection device 17 is arranged on the secondary water supply pipeline, and tap water is supplied to households after being disinfected by ultraviolet light. In other embodiments, the disinfection device 17 may be disposed in a clean water tank, and the disinfection device 17 may also be disinfected by ozone.
In this embodiment, a water flow meter 18, a first valve 19 and a filter 20 are sequentially provided on the municipal water pipe 9 from front to back, and the water flow meter, the first valve and the filter are all provided outside the tank body 1. The secondary water supply pipeline 13 is sequentially provided with a second valve 21 and at least one water supply pump 22 from front to back, wherein the second valve 21 is used for controlling the opening and closing of the secondary water supply pipeline, and the water supply pump is used for providing secondary water supply pressure for residents.
In this embodiment, the water flow meter, the first valve, the water inlet valve, the liquid level sensor, the water supply pump, the second valve, and the blowdown valve are electrically connected to an external control system (not shown), and the control method is conventional and will not be described again. In other embodiments, each valve can adopt other alternative structures such as a manual valve.
In this embodiment, a circular manhole is provided above the water inlet tank 4 for manual cleaning or maintenance. Can directly wash by water to the intake chamber during washing, perhaps because there is the interval in first barricade top, can directly wash by water to pipe chute or swash plate unit from the manhole, rivers converge to sewage pipes and discharge. The cleaning is convenient, the cleaning area is greatly reduced, and the labor is saved.
Example eight
A method for secondary water supply using the secondary water supply tank of any of the above embodiments, comprising the steps of (arrow indicates normal operation water flow direction): the water inlet valve 10 is opened, so that municipal water enters the water inlet tank 4 in a mode of water inlet above the liquid level and flows to the sedimentation tank 5 from the water inlet channel 7 at the bottom, the municipal water turns in a reverse Z shape and flows back from bottom to top through the inclined pipe 14 or the inclined plate sedimentation unit, purified tap water overflows from the top to the clean water tank 6 for storage, and a valve of the secondary water supply pipeline 13 is opened to supply to residents. The impurities such as suspended particles in the water are precipitated in the sedimentation tank 5 in the opposite direction, are deposited at the bottom of the sedimentation tank and are discharged through a bottom sewage discharge pipeline 11. When the liquid level detection mechanism in the clean water tank 6 detects that the liquid level of the clean water tank is lower than the set water level, the water inlet valve 10 is automatically opened, and when the liquid level detection mechanism detects that the liquid level of the clean water tank is higher than or equal to the set water level, the water inlet valve 10 is controlled to be closed.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereby, and the present invention may be modified in materials and structures, or replaced with technical equivalents, in the constructions of the above-mentioned various components. Therefore, structural equivalents made by using the description and drawings of the present invention or by directly or indirectly applying to other related arts are also encompassed within the scope of the present invention.
Claims (10)
1. A secondary water supply tank comprises a tank body and is characterized in that two retaining walls which are vertical to each other are vertically arranged in the tank body, the tank body is divided into three areas which are communicated with each other in an upper space, according to the water flow direction, the three areas are sequentially provided with a water inlet pool, a sedimentation pool and a clean water pool, the water inlet pool is adjacent to the sedimentation pool and is separated by a first retaining wall, the bottom of the first retaining wall is provided with a water inlet channel communicated with the water inlet pool and the sedimentation pool, the two pools and the clean water pool are separated by a second retaining wall, the top of the second retaining wall is provided with an overflow channel communicated with the sedimentation pool and the clean water pool, a plurality of sedimentation units used for blocking the passing of particulate matters are arranged in the sedimentation pool, a municipal water pipeline is connected with the water inlet pool, one end of the municipal water pipeline entering the water inlet pool is provided with a water inlet valve, the clean water tank in be provided with water intaking valve connection and be used for switching water intaking valve on-off state's liquid level detection mechanism, the bottom of sedimentation tank be provided with the blowdown pipeline, the blowdown pipeline on be provided with the blowoff valve, the rear side and the secondary water supply pipe connection of clean water tank.
2. The secondary water supply tank according to claim 1, wherein said first retaining wall, said second retaining wall and said tank body are made of the same material, said second retaining wall includes a second retaining wall A section for separating said water inlet tank and said clean water tank and a second retaining wall B section for separating said sedimentation tank and said clean water tank, said second retaining wall A section is the same as said first retaining wall in height, said second retaining wall B section is lower than said second retaining wall A section in height, the height difference range is 50-150 mm, and said overflow channel is formed above said second retaining wall B section.
3. The secondary water supply tank as claimed in claim 1, wherein the settling tank comprises a buffer layer, a deflection layer and a clarification layer from bottom to top in sequence, the buffer layer is communicated with the water inlet tank through the water inlet channel, the clarification layer is communicated with the clean water tank through the overflow channel, the settling units are hollow inclined tubes, a plurality of inclined tubes are obliquely arranged on the deflection layer, two ends of each inclined tube are respectively communicated with the buffer layer and the clarification layer, the cross sections of the inclined tubes are regular hexagons, the adjacent inclined tubes are closely connected with each other and arranged in an array shape, the inclined tubes are inclined from top to bottom towards the direction far away from the first retaining wall, so that water flow is in a reverse Z shape and sequentially passes through the buffer layer, the inclined tubes and the clarification layer from bottom to top, and the water enters the clean water tank from the overflow channel in an overflow mode.
4. A secondary water supply tank as defined in claim 3, wherein said overflow channel is provided at the bottom thereof with an overflow weir, said overflow weir is formed by a plurality of horizontally arranged depressed overflow grooves, and the cross section of said overflow grooves is triangular, circular arc, rectangular or inverted trapezoidal.
5. The secondary water supply tank as claimed in claim 4, wherein the height ratio of the buffer layer, the baffling layer and the clarification layer is (5-10): 10 (5-10), and the inclined angle of the inclined tube in the horizontal direction is 45-60 °.
6. The secondary water supply tank as claimed in claim 1, wherein the liquid level detection mechanism comprises a floating ball disposed in the clean water tank, the floating ball is connected to the water inlet valve through a connecting rod, the connecting rod spans above the second retaining wall, a set water level is disposed in the clean water tank, and the floating ball controls the water inlet valve to open when the water level in the clean water tank is lower than the set water level; when the water level in the clean water tank is higher than or equal to the set water level, the floating ball controls the water inlet valve to be closed, so that the liquid level of the water inlet tank, the liquid level of the sedimentation tank and the liquid level of the clean water tank are ensured to be gradually reduced to form a liquid level difference.
7. The secondary water supply tank as claimed in claim 1, wherein the height of the bottom of the first retaining wall is 25 to 100 cm.
8. The secondary water supply tank as claimed in claim 1, wherein the volume ratio of the inlet tank to the settling tank is in the range of: 1: 1-1: 9, the ratio of the volume of the water inlet pool plus the sedimentation pool to the volume of the clean water pool is in the range: 1: 9-1: 1.
9. The secondary water supply tank as claimed in claim 1, further comprising a sterilizing device disposed in said clean water tank or on said secondary water supply line.
10. A secondary water supply method using the secondary water supply tank as claimed in any one of claims 1 to 9, characterized by comprising the steps of: opening a water inlet valve, enabling municipal water to enter a water inlet pool in a mode of feeding water above the liquid level and then flow to a sedimentation tank from a water inlet channel at the bottom, deflecting the municipal water in a reverse Z shape from bottom to top and passing through an inclined tube sedimentation unit, enabling purified tap water to overflow from the top to a clean water pool for storage, and opening a valve of a secondary water supply pipeline to supply the purified tap water to residents; settling suspended particles in water in the opposite direction, depositing at the bottom of a settling pond, and discharging through a bottom sewage discharge pipeline; when the liquid level detection mechanism detects that the liquid level of the clean water tank is lower than the set water level, the water inlet valve is automatically opened, and when the liquid level detection mechanism detects that the liquid level of the clean water tank is higher than or equal to the set water level, the water inlet valve is controlled to be closed.
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| CN202010061086.4A CN111138014A (en) | 2020-01-19 | 2020-01-19 | Secondary water supply tank and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010061086.4A CN111138014A (en) | 2020-01-19 | 2020-01-19 | Secondary water supply tank and method |
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| CN111138014A true CN111138014A (en) | 2020-05-12 |
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