Urban and rural water treatment device

Abstract

The utility model relates to the technical field of water treatment, in particular to an urban and rural water treatment device which comprises a coarse filter and a fine filter connected with the coarse filter, a coarse filter screen used for coarsely filtering water is mounted in the coarse filter, a fine filter screen used for finely filtering water is mounted in the fine filter, and the coarse filter screen is connected with the fine filter. The central position of the fine filter is connected with a second connecting pipe, one end of the second connecting pipe is connected with an ultrafiltration filter, an ultrafiltration membrane assembly used for finally filtering water is installed in the ultrafiltration filter, the bottom of the ultrafiltration filter is further connected with a third connecting pipe, one end of the third connecting pipe is connected with a back-flushing pressure pump, and the other end of the third connecting pipe is connected with a water pump. The reverse flushing coarse filter, the fine filter and the ultrafiltration filter are adopted, the reverse flushing is opposite to a water production line, the flushing effect is much better than that of the forward flushing, and the service life of a coarse filter screen, a fine filter screen and an ultrafiltration membrane assembly inside can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a device for treating urban and rural water. Background Art

[0002] Rural water use typically involves drawing water from mountain ponds or reservoirs, settling it in a collective pool, and then supplying it directly to villagers' homes. Some users install hand-washable ultrafiltration membranes, regularly disassembling and hand-washing them to restore their lifespan.

[0003] Existing treatment devices that don't use ultrafiltration membranes will also become turbid and contaminated when the water source is turbid, such as during rain. Using ultrafiltration membranes can quickly clog, requiring frequent, manual cleaning. Some treatment devices also use forward flushing with raw water, which is only moderately effective in removing accumulated contaminants from the ultrafiltration membranes. Utility Model Content

[0004] The purpose of the utility model is to provide an urban and rural water treatment device that adopts reverse flushing of coarse filter, fine filter and ultrafiltration filter. The reverse flushing is opposite to the water production route, and the flushing effect is much better than the forward flushing, which is beneficial to prolonging the service life of the internal coarse filter, fine filter and ultrafiltration membrane assembly.

[0005] In order to solve the problems of the prior art, the utility model provides an urban and rural water treatment device, comprising a coarse filter and a fine filter connected to the coarse filter, the coarse filter being equipped with a coarse filter screen for coarsely filtering water, the fine filter being equipped with a fine filter screen for finely filtering water, a second connecting pipe being connected to the center position of the fine filter, one end of the second connecting pipe being connected to an ultrafiltration filter, an ultrafiltration membrane assembly for final filtration of the water being installed in the ultrafiltration filter, a third connecting pipe being further connected to the bottom of the ultrafiltration filter, one end of the third connecting pipe being connected to a backwash pressure pump, and one end of the backwash pressure pump being connected to a clean water storage tank for storing clean water through a pipeline, the backwash pressure pump being used to reversely allow water in the clean water storage tank to enter the ultrafiltration filter, the fine filter and the coarse filter, and when it is necessary to clean the internal ultrafiltration membrane assembly, the fine filter screen and the coarse filter screen, the backwash pressure pump allows water in the clean water storage tank to enter the ultrafiltration filter, the fine filter and the coarse filter for cleaning impurities on the ultrafiltration membrane assembly, the fine filter screen and the coarse filter screen.

[0006] Preferably, a water inlet for water intake is provided near the top of the coarse filter, a first connecting pipe is connected to the center of one side of the coarse filter, and one end of the first connecting pipe is connected to the top position of one side of the fine filter.

[0007] Preferably, a first impurity bin for storing impurities is fixed at the center of the bottom of the coarse filter, and a second impurity bin for storing impurities is fixed at the center of the bottom of the fine filter.

[0008] Preferably, an openable exhaust hole is provided at the center of the top of the coarse filter, and an openable exhaust hole is also provided at the center of the top of the fine filter.

[0009] Preferably, a sewage pipe for discharging sewage is further provided at the bottom of the coarse filter, fine filter and ultrafiltration filter.

[0010] Preferably, the drain pipe is connected to the bottom of the first impurity bin, and a first control valve for controlling the water flow is installed at the connection of the drain pipe to the first impurity bin. The drain pipe is connected to the bottom of the second impurity bin, and a second control valve for controlling the water flow is installed at the connection of the drain pipe to the second impurity bin. The drain pipe is connected to the ultrafiltration filter and a third control valve for controlling the water flow is installed.

[0011] Preferably, the mesh size of the coarse filter is 20 meshes.

[0012] Preferably, the mesh size of the fine filter is 400 meshes.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the urban and rural water treatment device has a reasonable structure and has the following advantages:

[0014] (1) By installing a backwash pressure pump between the filtration device and the clean water storage tank, when the device is in the filtration mode, water passes normally, and impurities will gradually accumulate on the coarse filter, fine filter and ultrafiltration membrane assembly. When impurities accumulate too much on the coarse filter, fine filter and ultrafiltration membrane assembly, the backwash pressure pump starts to reverse the water in the clean water storage tank to the coarse filter, fine filter and ultrafiltration filter, and remove the impurities on the coarse filter, fine filter and ultrafiltration membrane assembly. The flushing water source is cleaner and is not easy to re-contaminate the ultrafiltration membrane. At the same time, the reverse flushing is opposite to the water production route, and the flushing effect will be much better than the forward flushing, which is beneficial to delay the service life of the internal coarse filter, fine filter and ultrafiltration membrane assembly;

[0015] (2) The structure of coarse and fine filtration is in-line and out-line, top-line and middle-line, and a dirt bin is set at the bottom so that pollutants can be deposited and accumulated at the bottom before being discharged;

[0016] (3) This device is mostly used in rural water supply areas. Currently, most rural ultrafiltration devices are hand-washed membranes. This device can realize automatic water production and automatic timed cleaning without manual operation and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a three-dimensional structural diagram of a rural and urban water treatment device;

[0018] Figure 2 It is a schematic diagram of the exploded structure of a rural and urban water treatment device;

[0019] Figure 3 It is a flow chart of water use in urban and rural water treatment devices;

[0020] Figure 4 The present invention is a backwash flow chart of a rural and urban water treatment device.

[0021] The numbers in the figure are: 1. coarse filter; 11. first impurity bin; 12. water inlet; 13. coarse filter; 2. fine filter; 21. second impurity bin; 22. fine filter; 3. first connecting pipe; 4. drain pipe; 41. first control valve; 42. second control valve; 43. third control valve; 5. ultrafiltration filter; 51. ultrafiltration membrane assembly; 6. second connecting pipe; 7. third connecting pipe; 8. backflush pressure pump; 9. clean water storage tank. DETAILED DESCRIPTION

[0022] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] Reference Figure 1-Figure 4As shown, the utility model provides: a water treatment device for urban and rural areas, including a coarse filter 1 and a fine filter 2 connected to the coarse filter 1, the coarse filter 1 is equipped with a coarse filter 13 for coarse filtering of water, the mesh number of the coarse filter 13 is 20 meshes, and the coarse filter 1 is used as the first line of defense, and the 20-mesh coarse filter 13 is adopted. This mesh number can effectively remove large particles of impurities in the water, such as mud, suspended matter, etc., and reduce the burden of the subsequent filtration system, the fine filter 2 is equipped with a fine filter 22 for fine filtering of water, the mesh number of the fine filter 22 is 400 meshes, and the 400-mesh fine filter 22 can further remove tiny particles and suspended matter in the water, including preliminary interception of some bacteria and other microorganisms, thereby improving the purity of the water, the center of the fine filter 2 is connected to a second connecting pipe 6, one end of the second connecting pipe 6 is connected to an ultrafiltration filter 5, and the ultrafiltration filter 5 is equipped with an ultrafiltration membrane assembly 51 for final filtration of the water, the ultrafiltration membrane assembly 51 has the characteristics of small pore size and high retention rate, and can effectively remove colloids, Bacteria, viruses and other tiny impurities are removed to ensure that the water quality of the outlet reaches high standards. A third connecting pipe 7 is also connected to the bottom of the ultrafiltration filter 5, one end of the third connecting pipe 7 is connected to a backwash pressure pump 8, and one end of the backwash pressure pump 8 is connected to a clean water storage tank 9 for storing clean water through a pipeline. The backwash pressure pump 8 is used to reverse the water in the clean water storage tank 9 into the ultrafiltration filter 5, the fine filter 2 and the coarse filter 1. When the internal ultrafiltration membrane assembly 51, the fine filter 22 and the coarse filter 13 need to be cleaned, the backwash pressure pump 8 allows the water in the clean water storage tank 9 to enter the ultrafiltration filter 5, the fine filter 2 and the coarse filter 1 for cleaning the impurities on the ultrafiltration membrane assembly 51, the fine filter 22 and the coarse filter 13.

[0024] When impurities accumulate too much on the coarse filter 13, the fine filter 22 and the ultrafiltration membrane assembly 51, the backwash pressure pump 8 is started to reverse the water in the clean water storage tank 9 to the coarse filter 1, the fine filter 2 and the ultrafiltration filter 5, and remove the impurities on the coarse filter 13, the fine filter 22 and the ultrafiltration membrane assembly 51, making the water source cleaner and less likely to re-contaminate the ultrafiltration membrane. At the same time, backwashing is opposite to the water production route, and the flushing effect will be much better than forward flushing, which is beneficial to extend the service life of the internal coarse filter 13, the fine filter 22 and the ultrafiltration membrane assembly 51.

[0025] Through the three-stage filtration system of coarse filtration, fine filtration and ultrafiltration, the water quality is gradually improved to ensure the purity of the output water. The built-in backwash pressure pump 8 and clean water storage tank 9 realize automatic cleaning of the equipment, reducing the frequency and difficulty of manual maintenance.

[0026] A water inlet 12 for water intake is provided near the top of the coarse filter 1. A first connecting pipe 3 is connected to the center position of one side of the coarse filter 1. One end of the first connecting pipe 3 is connected to the top position of one side of the fine filter 2. The water inlet 12 allows water to enter the coarse filter 1 from a high place, which helps to evenly distribute the water flow inside the coarse filter 1, reduce dead corners and short-flow phenomena, and improve filtration efficiency; secondly, top water inlet can ensure that the water flow is buffered and dispersed to a certain extent before passing through the coarse filter screen 13, which helps to reduce the direct impact of the water flow on the coarse filter screen 13 and extend the service life of the coarse filter screen 13.

[0027] A first impurity bin 11 for storing impurities is fixed at the center of the bottom of the coarse filter 1. This bin collects and stores large impurities, such as silt and suspended solids, separated from the water. This prevents impurities from re-entering the water flow and affecting subsequent filtration. A second impurity bin 21 for storing impurities is fixed at the center of the bottom of the fine filter 2. This bin facilitates the collection and storage of fine impurities separated from the water.

[0028] An openable vent hole is also provided at the center position of the top of the coarse filter 1, and an openable vent hole is also provided at the center position of the top of the fine filter 2. A sewage pipe 4 for sewage discharge is also provided at the bottom of the coarse filter 1, the fine filter 2 and the ultrafiltration filter 5.

[0029] The drain pipe 4 is connected to the bottom of the first impurity bin 11, and a first control valve 41 for controlling the water flow is installed at the connection with the first impurity bin 11. The drain pipe 4 is connected to the bottom of the second impurity bin 21, and a second control valve 42 for controlling the water flow is installed at the connection with the second impurity bin 21. The drain pipe 4 is connected to the ultrafiltration filter 5 and a third control valve 43 for controlling the water flow is installed.

[0030] The program controls the start of the backflushing pressure pump 8, and the program opens the first control valve 41, the second control valve 42 and the third control valve 43 in sequence. The duration of each independent opening is 2 minutes, and it will automatically close after the time. The ultrafiltration membrane assembly 51, the fine filter screen 22 and the coarse filter screen 13 can be backwashed in sequence.

[0031] The above embodiments merely represent one or several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A water treatment device for urban and rural use, characterized in that: The invention comprises a coarse filter (1) and a fine filter (2) connected to the coarse filter (1), wherein the coarse filter (1) is provided with a coarse filter screen (13) for coarsely filtering water, and the fine filter (2) is provided with a fine filter screen (22) for finely filtering water, a second connecting pipe (6) is connected to the center of the fine filter (2), one end of the second connecting pipe (6) is connected to an ultrafiltration filter (5), an ultrafiltration membrane assembly (51) for final filtration of water is provided in the ultrafiltration filter (5), and a third connecting pipe (7) is further connected to the bottom of the ultrafiltration filter (5), one end of the third connecting pipe (7) is connected to a reverse filter. A backwash pressure pump (8) is provided, and one end of the backwash pressure pump (8) is connected to a clean water storage tank (9) for storing clean water through a pipeline. The backwash pressure pump (8) is used to reversely allow water in the clean water storage tank (9) to enter the ultrafiltration filter (5), the fine filter (2) and the coarse filter (1). When it is necessary to clean the ultrafiltration membrane assembly (51), the fine filter (22) and the coarse filter (13) inside, the backwash pressure pump (8) allows the water in the clean water storage tank (9) to enter the ultrafiltration filter (5), the fine filter (22) and the coarse filter (1) to clean impurities on the ultrafiltration membrane assembly (51), the fine filter (22) and the coarse filter (13).

2. The urban and rural water treatment device according to claim 1, characterized in that: A water inlet (12) for water intake is provided near the top of the coarse filter (1), a first connecting pipe (3) is connected to the center of one side of the coarse filter (1), and one end of the first connecting pipe (3) is connected to the top of one side of the fine filter (2).

3. The urban and rural water treatment device according to claim 1, characterized in that: A first impurity bin (11) for storing impurities is fixed at the center of the bottom of the coarse filter (1), and a second impurity bin (21) for storing impurities is fixed at the center of the bottom of the fine filter (2).

4. The urban and rural water treatment device according to claim 1, characterized in that: An openable exhaust hole is also provided at the center of the top of the coarse filter (1), and an openable exhaust hole is also provided at the center of the top of the fine filter (2).

5. The urban and rural water treatment device according to claim 1, characterized in that: A sewage pipe (4) for sewage discharge is also provided at the bottom of the coarse filter (1), the fine filter (2) and the ultrafiltration filter (5).

6. The urban and rural water treatment device according to claim 5, characterized in that: The sewage pipe (4) is connected to the bottom of the first impurity bin (11), and a first control valve (41) for controlling water flow is installed at the connection of the sewage pipe (4) to the first impurity bin (11). The sewage pipe (4) is connected to the bottom of the second impurity bin (21), and a second control valve (42) for controlling water flow is installed at the connection of the sewage pipe (4) to the second impurity bin (21). A third control valve (43) for controlling water flow is installed at the connection of the sewage pipe (4) to the ultrafiltration filter (5).

7. The urban and rural water treatment device according to claim 1, characterized in that: The mesh number of the coarse filter (13) is 20 meshes.

8. The urban and rural water treatment device according to claim 1, characterized in that: The mesh number of the fine filter (22) is 400 meshes.

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