CN212594177U - Shallow sand filter with bypass pressure reducing device - Google Patents
Shallow sand filter with bypass pressure reducing device Download PDFInfo
- Publication number
- CN212594177U CN212594177U CN202021174479.8U CN202021174479U CN212594177U CN 212594177 U CN212594177 U CN 212594177U CN 202021174479 U CN202021174479 U CN 202021174479U CN 212594177 U CN212594177 U CN 212594177U
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- water
- way valve
- perforated plate
- casing
- installs
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- 239000004576 sand Substances 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000012856 packing Methods 0.000 claims abstract description 22
- 238000011001 backwashing Methods 0.000 description 18
- 238000001914 filtration Methods 0.000 description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- 239000012535 impurity Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000009287 sand filtration Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- Filtration Of Liquid (AREA)
Abstract
The utility model provides a shallow sand filter with bypass pressure relief device, it includes casing (16), installs perforated plate (5) in the casing, installs water collecting cap (6) on perforated plate (5), installs outlet pipe (7) on the casing of perforated plate (5) lower part, and upper portion on perforated plate (5) is equipped with packing layer (4), and water distributor (3), characterized by are installed on upper portion in casing (16) on packing layer (4) the end of intaking of water distributor (3) is linked together with delivery port (14) of two three-way valve (2), and water inlet (13) of two three-way valve (2) are linked together with inlet tube (1), and mud discharge outlet (15) and mud pipe (8) of two three-way valve (2) are linked together. The utility model discloses simple structure, back flush convenient and reliable, it is quick, only solve the inconvenient problem of traditional back flush valve control with a two-position three-way valve.
Description
Technical Field
The utility model relates to a water treatment technology, especially a sand filtration formula water filter, specifically speaking are shallow sand filter with bypass pressure relief device.
Background
The shallow medium filter is a high-efficiency filtering device which utilizes quartz sand as a filtering medium, filters water with higher turbidity through granular or non-granular quartz sand with certain thickness under certain pressure, effectively intercepts and removes suspended matters, organic matters, colloidal particles, microorganisms, chlorine, odor, partial heavy metal ions and the like in the water, and finally achieves the effects of reducing the water turbidity and purifying the water quality. Is suitable for agricultural irrigation, industrial water, domestic water and municipal water supply system: 1. the method is mainly used for pre-stage pretreatment of water treatment turbidity removal, water softening, electrodialysis and reverse osmosis, and can also be used for surface water, underground water and the like. Can effectively remove suspended matters, organic matters, colloid, silt and the like in water. 2. Can be widely applied to electronic power, petrochemical industry, metallurgical electroplating, papermaking and textile, and pharmaceutical dialysis. The shallow medium filter has wide application, but the packing layer in the water collecting area is often disordered and runs sand during backwashing, so that the drainage cap is blocked and damaged, and the effluent quality is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at to the current shallow layer media filter often causes the indiscriminate layer of packing layer in catchment area when the backwash, runs the sand, blocks up, damages the drain cap, influences the problem of play water quality of water, designs a shallow layer sand filter with bypass pressure relief device.
The technical scheme of the utility model is that:
the utility model provides a shallow sand filter with bypass pressure relief device, it includes casing 16, installs perforated plate 5 in the casing, installs water collecting cap 6 on the perforated plate 5, installs outlet pipe 7 on the casing of perforated plate 5 lower part, and upper portion on the perforated plate 5 is equipped with packing layer 4, and water distributor 3, characterized by are installed on the upper portion in the casing 16, on packing layer 4 the end of intaking of water distributor 3 is linked together with two three-way valve 2's delivery port 14, and two three-way valve 2's water inlet 13 is linked together with inlet tube 1, and two three-way valve 2's mud discharging port 15 is linked together with mud pipe 8.
One path of the water outlet pipe 7 is communicated with water using equipment through an electromagnetic valve 9, and the other path of the water outlet pipe is communicated with a back flush water source or a water outlet pipe of another filter through a pressure reducing valve 10.
The upper part of the shell 16 is provided with a manhole 11, and the lower part is provided with a hand hole 12.
The utility model has the advantages that:
1. the filter is fully matched with a water distributor to distribute water uniformly, and has high filtering flow rate and high efficiency; an internal circulation is formed during back flushing, and sand does not run.
2. Unfiltered water flows uniformly through the packing layer even at high flow rates and maintains a flat water surface above the packing layer.
3. The filter bottom evenly is equipped with 3 hand holes, and the water collector is conveniently installed, can be used to empty and maintain. The upper part is provided with a manhole for observing, feeding and replacing the water distributor.
4. Water inlet and outlet pipe diameter DN100, single filtering area 1.1m, filtering speed 20-35m/h, single-tank processing capacity 20-40m high speed/h, multi-tank simultaneous operation, adjustment according to processing capacity
The utility model discloses simple structure, back flush convenient and reliable, it is quick, only solve the inconvenient problem of traditional back flush valve control with a two-position three-way valve.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the two-position three-way valve of the present invention when operating in the filtering state.
Fig. 3 is a schematic structural diagram of the two-position three-way valve of the present invention when operating in a back-flushing state.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1-3.
A shallow sand filter with a bypass pressure reducing device comprises a shell 16, wherein a manhole 11 is arranged at the upper part of the shell 16, and a hand hole 12 is arranged at the lower part of the shell. The shell is internally provided with a porous plate 5, the porous plate 5 is provided with a water collecting cap 6, the shell at the lower part of the porous plate 5 is provided with a water outlet pipe 7, one path of the water outlet pipe 7 is communicated with water using equipment through an electromagnetic valve 9, and the other path of the water outlet pipe is communicated with a back flush water source or the water outlet pipe of another filter through a pressure reducing valve 10. The upper part of the porous plate 5 is provided with a packing layer 4, the upper parts of the shell 16 and the packing layer 4 are provided with a water distributor 3, the water inlet end of the water distributor 3 is communicated with the water outlet 14 of the two-position three-way valve 2, the water inlet 13 of the two-position three-way valve 2 is communicated with the water inlet pipe 1, and the sludge discharge port 15 of the two-position three-way valve 2 is communicated with the sludge discharge pipe 8. As shown in fig. 1.
The utility model discloses a shallow media filter during operation mainly contains 2 operating condition: a filtration state and a backwash state. When the system is in the filtration state, the unfiltered water passes through the upper water distributor, and the spherical shell is matched to reach the packing layer in the filter in a nearly advection state, as shown in figure 2. As water flows through the packing layer, impurities are trapped within the packing layer. The collector at the bottom of the filter collects and discharges the filtered water uniformly. Head loss (i.e., pressure differential) increases as impurities accumulate in the packing layers. When the pressure difference reaches a certain set limit or the filtering time reaches a set value, the system automatically switches to a backwashing state to clean the packing layer and remove accumulated impurities, and frequent backwashing is necessary for the system to remove the accumulated impurities. When the system enters a backwashing state, the on-off position of the three-way valve (the inlet is closed and the drain outlet is opened) is changed through PLC control (a conventional electric control device), and as shown in figure 3, the filtered water in other filter tanks flows into the filter tank to be backwashed. Because the packing layer of the filter unit of which the system pressure is backwashed is flushed under the impact of water flow, impurities are discharged through the drain outlet of the three-way valve. In an FQG (full-automatic shallow medium filter) system, a specially designed water collector enables a packing layer to form internal circulation when the packing layer is in a backwashing state, and the packing layers are scrubbed mutually, so that the backwashing efficiency is improved to the maximum extent, the required backwashing water is reduced, and the material does not run out during backwashing. When backwashing is finished, the valve is restored to the filtering state, and the next filtering unit enters the backwashing state. Typically, a system consists of multiple filter tanks that are backwashed sequentially to ensure that the backwash is uninterrupted. In order to solve the problem that a packing layer in a water collecting area is disordered or runs sand due to high water inlet pressure and high water flow in a backwashing state, a water outlet pipeline is connected with a flow dividing pipe which has the function of dividing water flow, so that the backwashing state can normally run. The shunt pipe is provided with a pressure reducing valve, the work of the pressure reducing valve is controlled by an electromagnetic valve on the two-position three-way valve, the pressure reducing valve is opened in a backwashing state and is closed in a filtering state. The filtering state and the backwashing state are controlled by a two-position three-way valve, namely the two-position three-way valve special for shallow sand filtration can replace 2 electric or pneumatic valves, a hydraulic control valve special for a full-automatic backwashing filtering system is driven by the pressure of a pipeline system, two-position three-way switching can be automatically carried out, automatic backwashing of the filter is realized, the structure is simple, the reliability is high, long-time stable operation under the condition of no maintenance can be ensured, the flow direction of water can be changed by a diaphragm driving structure only with a short stroke, a water inlet is closed when a backwashing port is opened, and vice versa, and the situation that the filter overflows or clear water and waste water are mixed is avoided
The utility model discloses an at two three-way valves of inlet tube department installation, normal business turn over water state, the inlet outlet is unblocked, and the blowdown is closed, like figure 2. When water pressure or air pressure is fed into the upper part of the diaphragm, the valve is discharged, and sewage is discharged and communicated, as shown in figure 3. A bypass pressure-reducing diversion water pipe is arranged on a water outlet pipe at the lower end of the device, as shown in figure 1. When the equipment runs, the PLC system on the two-position three-way valve simultaneously controls the pressure reducing valve on the bypass device, sets parameters and backwashing interval time of 4-8h, and can also be adjusted according to running conditions.
The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.
Claims (3)
1. The utility model provides a shallow sand filter with bypass pressure relief device, it includes casing (16), installs perforated plate (5) in the casing, installs water collecting cap (6) on perforated plate (5), installs outlet pipe (7) on the casing of perforated plate (5) lower part, and upper portion on perforated plate (5) is equipped with packing layer (4), and water distributor (3), characterized by are installed on upper portion in casing (16) on packing layer (4) the end of intaking of water distributor (3) is linked together with delivery port (14) of two three-way valve (2), and water inlet (13) of two three-way valve (2) are linked together with inlet tube (1), and mud discharge outlet (15) and mud pipe (8) of two three-way valve (2) are linked together.
2. The shallow sand filter with the bypass pressure reducing device as claimed in claim 1, wherein one path of the water outlet pipe (7) is communicated with a water using device through an electromagnetic valve (9), and the other path is communicated with a back flush water source or the water outlet pipe of the other filter through a pressure reducing valve (10).
3. The shallow sand filter with the bypass pressure reducing device as claimed in claim 1, wherein the shell (16) is provided with a manhole (11) at the upper part and a hand hole (12) at the lower part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021174479.8U CN212594177U (en) | 2020-06-23 | 2020-06-23 | Shallow sand filter with bypass pressure reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021174479.8U CN212594177U (en) | 2020-06-23 | 2020-06-23 | Shallow sand filter with bypass pressure reducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212594177U true CN212594177U (en) | 2021-02-26 |
Family
ID=74756305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021174479.8U Expired - Fee Related CN212594177U (en) | 2020-06-23 | 2020-06-23 | Shallow sand filter with bypass pressure reducing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212594177U (en) |
-
2020
- 2020-06-23 CN CN202021174479.8U patent/CN212594177U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210226 |