CN205313143U - Single loop filter system for washing and sweeping vehicle - Google Patents

Abstract

The utility model discloses a single loop filter system for washing and sweeping vehicle, including sewage case, solution tank, water pump and connecting line, the sewage case passes through the pipeline to be connected with the water pump, and the water pump passes through the pipeline to be connected with one or more than one filter, and the filter passes through the pipeline to be connected with the sewage case, and the clear water of filter exports and passes through the pipeline and be connected with solution tank, the filter is ceramic membrane filter, and ceramic membrane filter is that ceramic membrane tube sets up in seal shell, and the seal shell both ends are the import of conduct sewage, outlet of sewer and tube coupling respectively, and the last clear water that is provided with of seal shell exports, the utility model discloses can extensively be used for clean urban street's sanitation vehicle, not only can improve effectively washing of washing and sweeping vehicle by a wide margin and sweep the activity duration, reduce the number of times that the operation vehicle removed water station filling clear water and removed the wasteyard effluence, can reduce vehicle purchase and use cost in the work area of unit moreover, reduce the emission of sewage, improve the utilization ratio of water resource.

Description

A single-circulation filter system applied to washing and sweeping vehicles

technical field

The utility model belongs to the technical field of special vehicles for sanitation, in particular to a single-circulation filter system applied to a cleaning vehicle, which is mainly used for the sewage filtration and recovery work of the cleaning vehicle.

Background technique

With the wide application of road cleaning vehicles in the sanitation industry, how to improve the effective operating time of cleaning vehicles and reduce the purchase and use costs of cleaning vehicles per unit operating area has become a new research topic. At present, the sewage collected by conventional vehicles on the market after washing the road surface is generally discharged directly, which not only causes waste of water resources, but also needs to repeatedly go to the water station to fill with clean water and discharge sewage to the garbage station, which greatly limits cleaning. Effective operating time of the vehicle. Therefore, sanitation vehicles using sewage filters can not only reduce sewage discharge, but also improve water reuse rate and increase the operating time of vehicles. The conventional filtration system currently used in the market is not only huge in size, which seriously occupies the limited space of the cleaning vehicle, but also has low sewage treatment efficiency, and the filtration device is easily blocked and difficult to clean. It has the characteristics of short working cycle and high maintenance cost.

The patent No. CN203899295U applied by Fujian Longma Environmental Sanitation Equipment Co., Ltd. is "Sweeping Vehicle Recycling Water Recycling Device". It uses PE sintered membrane as the filter membrane, which is easy to clog and needs to be cleaned manually after each use. Zoomlion’s patent No. CN102561241A “Control method, device and system for washing and sweeping vehicles” adopts the method of pumping out the air and water in the filtration membrane for pressure filtration. The biggest disadvantage of this filtration method is The pressure difference inside and outside the membrane is small, the filtration efficiency is low, and the filter membrane is easy to clog, difficult to clean, and difficult to maintain.

Contents of the invention

The purpose of the utility model is to improve the deficiencies of the prior art and provide a cleaning and sweeping vehicle capable of cleaning roads in various harsh working conditions, greatly prolonging the effective working time of the cleaning and sweeping vehicle, not easy to be blocked, high in sewage filtration efficiency, and easy to maintain Sewage Filtration System.

The purpose of this utility model is achieved in this way. A single-cycle filter system applied to washing and sweeping vehicles includes a sewage tank, a clean water tank, a water pump and a connecting pipeline. It is characterized in that the sewage tank is connected to the water pump through the pipeline, and the water pump passes through The pipeline is connected to one or more filters, the filter is connected to the sewage tank through the pipeline, and the clean water outlet of the filter is connected to the clean water tank through the pipeline, the filter is a ceramic membrane filter, and the ceramic membrane filter is a ceramic The membrane tube is arranged in the sealed casing, and the two ends of the sealed casing are respectively used as the sewage inlet and the sewage outlet to connect with the pipeline, and the clean water outlet is arranged on the sealed casing.

In order to further realize the purpose of the utility model, a liquid level sensor may be arranged in the sewage tank, and the liquid level sensor is connected to control a valve arranged on the connecting pipeline between the sewage tank and the water pump.

In order to further realize the purpose of the utility model, the ceramic membrane filter may be a segmented ceramic membrane filter, including two or more filter segments, and the adjacent filter segments are fixed by connecting devices.

In order to further realize the purpose of the utility model, the ceramic membrane filter may be a segmented ceramic membrane filter, including two or more filter segments, one or more filter segments, and adjacent filter segments The segments are connected and fixed by transition segments.

In order to further realize the object of the present utility model, sealing and damping devices may be provided between the ceramic membrane tubes in the segmented ceramic membrane filter and at both ends of each filter segment.

In order to further realize the purpose of the utility model, the ceramic membrane filter can be provided with a backwash port, the backwash port is connected to the water pump through the pipeline, and the water pump is connected to the clean water through the pipeline provided with the valve. box connection.

In order to further realize the purpose of the utility model, the ceramic membrane filter may be provided with a backwash port, and the backwash port is connected to the gas storage tank through a pipeline.

In order to further realize the purpose of the present utility model, it may be that each section of the filter section of the segmented ceramic membrane filter is provided with a backwash port, and the backwash port is connected with a water pump through a pipeline, and the water pump It is connected to the clean water tank through a pipeline with a valve.

In order to further realize the purpose of the utility model, each filter section of the segmented ceramic membrane filter may be provided with a backwash port, and the backwash port is connected to the gas storage tank through a pipeline.

In order to further realize the purpose of the utility model, it may be that the single-circulation filtration system also includes a strong cleaning tank, the strong cleaning tank is connected with the water pump through a pipeline provided with a valve, and the clear water outlet of the filter is connected with the strong cleaning tank. The cleaning tank is connected with the clean water tank through a pipeline provided with a valve.

In order to further realize the purpose of the utility model, it may be that the single-circulation filter system also includes an automatic vibrating filter net, the automatic vibrating filter net is installed at the bottom of the sewage tank and a vibrating pump is installed, and the pipe connecting the sewage tank and the water pump Pressure gauges and pressure switches are installed on the road.

The ceramic membrane tubes in the ceramic membrane filter described in the utility model can be arranged horizontally, obliquely or vertically. The horizontal arrangement means that the axis of the ceramic membrane tubes is parallel to the plane of the chassis of the cleaning vehicle. The oblique arrangement means that the ceramic membrane tubes The axis forms a certain inclination angle with the chassis plane of the sweeper, and the vertical arrangement means that the axis of the ceramic membrane tube is perpendicular to the chassis plane of the sweeper.

The ceramic membrane filter described in the utility model can be arranged horizontally, obliquely or vertically. The horizontal arrangement means that the axis of the ceramic membrane filter is parallel to the plane of the chassis of the cleaning vehicle. The plane of the chassis of the car is inclined at a certain angle, and the vertical arrangement means that the axis of the ceramic membrane filter is perpendicular to the plane of the chassis of the washing machine.

The ceramic membrane tubes in the ceramic membrane filter described in the utility model can be arranged horizontally, obliquely or vertically. The horizontal arrangement means that the axis of the ceramic membrane tubes is parallel to the plane of the chassis of the cleaning vehicle. The oblique arrangement means that the ceramic membrane tubes The axis forms a certain inclination angle with the chassis plane of the sweeper, and the vertical arrangement means that the axis of the ceramic membrane tube is perpendicular to the chassis plane of the sweeper.

The ceramic membrane filter described in the utility model can be arranged horizontally, obliquely or vertically. The horizontal arrangement means that the axis of the ceramic membrane filter is parallel to the plane of the chassis of the cleaning vehicle. The plane of the chassis of the car is inclined at a certain angle, and the vertical arrangement means that the axis of the ceramic membrane filter is perpendicular to the plane of the chassis of the washing machine.

Compared with the prior art, the utility model has the following remarkable features and positive effects: the utility model is provided with a single-circulation filter system connecting the sewage tank and the clean water tank on the car body below the sewage tank, making full use of the sanitation cleaning and sweeping vehicle The inherent space, reasonable layout, and the use of single-cycle filtration system greatly increase the single cleaning operation time of the sweeper, reduce the return time of the sweeper to add water and discharge sewage, and reduce the purchase and cost of the sweeper in the unit operating area. The cost. The ceramic membrane filter is mainly based on the cross-flow filtration principle of the ceramic membrane. The ceramic tube is densely covered with capillary pores. When filtering, some impurities and part of the clean water with a diameter smaller than the capillary pore diameter can pass through the capillary pores, and most of the remaining impurities are absorbed by the high-speed water flow. Flushing out of the ceramic membrane filter can prevent impurities flowing through the ceramic membrane from adhering to the surface of the ceramic membrane, maintaining a good filtration effect for a long time, high filtration efficiency, and low maintenance costs.

Adding a liquid level sensor in the sewage tank and adding a valve to the single-cycle filter system can make the single-cycle filter system automatically start when the sewage in the sewage tank reaches the position of the liquid level sensor, which is easy to operate and increases the automation of the system. When the sewage is lower than the liquid level sensor, the single-cycle filter system is automatically closed to protect the water pump and filter device.

The vertical and oblique arrangement of the ceramic membrane tubes in the ceramic membrane filter can effectively prevent the sedimentation and clogging of sewage when flowing through the ceramic membrane tubes, while the horizontal arrangement of the ceramic membrane tubes can make better use of the limited space of the washing machine.

The segmented ceramic membrane filter is composed of multi-segment ceramic membrane filters fixed by connecting devices. Compared with the integral ceramic membrane filter of the same length, it can reduce the overall size of the ceramic membrane tube while meeting the filtration requirements. Replacement costs when the roots are damaged and blocked, easy to disassemble and repair, and reduce the cost of use.

The sealing device provided between the ceramic membrane tubes in the segmented ceramic membrane filter and at both ends of the filter section of the ceramic membrane filter can effectively prevent the leakage of sewage during filtration. The sealing device is made of rubber, silica gel and other elastic materials. The material also has the effect of shock absorption, reducing the damage of the ceramic membrane due to vibration.

The horizontal, oblique or vertical arrangement of the ceramic membrane filter can be adjusted according to the limited space of the cleaning vehicle. To a certain extent, the effective working length of the ceramic membrane filter is improved on the basis of the inherent space, and the longitudinal and oblique arrangement can effectively prevent the sedimentation and clogging of the garbage in the sewage in the filter.

The horizontal coaxial, horizontal different axis, longitudinal coaxial, vertical different axis, oblique coaxial, and oblique different axes of the segmented ceramic membrane can be adjusted according to the limited space of the cleaning vehicle to maximize the filtration of the ceramic membrane. The effective working length of the device.

The ceramic membrane filter shell is made of corrosion-resistant materials such as stainless steel, polymer materials and composite materials, which can effectively prevent the corrosion and oxidation of the ceramic membrane filter during use, and improve the service life of the ceramic membrane filter.

The backwash port set by the ceramic membrane filter is convenient for backwashing the ceramic membrane filter with compressed air and water flow, and can more effectively remove impurities blocked in the capillary pores on the inner surface of the ceramic membrane tube.

The compressed air backwashing function of the single-circulation filter system can use high-pressure air to backwash the ceramic membrane filter through the backwashing port, which has high flushing efficiency and saves the amount of water required for cleaning.

The single-circulation filtration system can also have the function of backwashing with clean water. This function can use high-pressure water to backwash the ceramic membrane filter through the backwash port. The flushing efficiency is high, the cleaning duration is longer, and the cleaning effect is good.

The single-cycle filtration system can also have a strong cleaning function. By adding a strong acid solution and a strong alkali solution to the strong cleaning tank, the organic impurities that have grown on the inner surface of the ceramic membrane due to long-term non-use can be removed. The organic impurities are usually moss and algae. , it is difficult to remove by conventional cleaning methods.

The utility model can also be provided with an automatic vibrating filter net. Since the sewage sucked into the sewage tank by the suction plate contains large garbage such as leaves and plastic bags, if the coarse filtration is not performed, the ceramic membrane filter system is easily blocked, so the automatic vibration The filter screen can classify large garbage, medium garbage and small garbage in the sewage, thereby avoiding the clogging of the ceramic membrane filter. When there are many garbage attached to the filter, the water pump will not suck enough water. Negative pressure is generated in the pipeline, and when the pressure switch in the pipeline detects the set negative pressure signal, the feedback signal starts the vibrating pump to shake off the garbage attached to the filter net, so that the filter net always maintains a good filtering state.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model.

Fig. 2 is a schematic structural view of the ceramic membrane filter of the present invention.

Fig. 3 is another structural schematic diagram of the utility model.

Fig. 4 is a structural schematic diagram of the series connection of filters of the present invention.

Fig. 5 is a structural schematic diagram of parallel connection of filters of the present invention.

Fig. 6 is another structural schematic diagram of the utility model.

Fig. 7 is a structural schematic diagram of the segmented ceramic membrane filter of the present invention.

Fig. 8 is another structural schematic diagram of the segmented ceramic membrane filter of the present invention.

Fig. 9 is another structural schematic diagram of the segmented ceramic membrane filter of the present invention.

Fig. 10 is a schematic diagram of the horizontal and different axis arrangement of the ceramic membrane filter of the present invention.

Fig. 11 is a schematic diagram of the vertical and off-axis arrangement of the ceramic membrane filter of the present invention.

Fig. 12 is a schematic diagram of the oblique and different axis arrangement of the ceramic membrane filter of the present invention.

Fig. 13 is a schematic diagram of the horizontal coaxial arrangement of the ceramic membrane filter of the present invention.

Fig. 14 is a schematic diagram of the longitudinal coaxial arrangement of the ceramic membrane filter of the present invention.

Fig. 15 is a schematic diagram of the oblique coaxial arrangement of the ceramic membrane filter of the present invention.

Fig. 16 is a structural schematic diagram of a single-circulation filtration system with a backwash outlet filter of the present invention.

Fig. 17 is another structural schematic view of the single-circulation filter system with a backwash filter of the present invention.

Fig. 18 is a schematic structural view of a single-cycle filtration system with a strong cleaning box of the present invention.

Fig. 19 is a structural schematic diagram of a single-cycle filter system with an automatic vibrating filter screen of the present invention.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

A single-cycle filtration system applied to washing and sweeping vehicles, as shown in Figure 1, the sewage tank 1 is connected to the water pump 4 through the pipeline, and the water pump 4 is connected to the sewage inlet of one or more filters 3 through the pipeline, and the filter 3 The sewage outlet is connected with the sewage tank 1 through a pipeline, and the clean water outlet 5 of the filter 3 is connected with the clean water tank 2 through a pipeline. The filter 3 is a ceramic membrane filter. Referring to FIG. 2, the ceramic membrane filter 3 is a ceramic membrane filter. The membrane tube 6 is arranged in the sealed casing 7. The ceramic membrane tube 6 can be arranged horizontally, obliquely or vertically in the sealed casing 7 according to the needs. The two ends of the sealed casing 7 are used as the sewage inlet 10, the sewage outlet 13 and the pipeline respectively. connection, the sealed housing 7 is provided with a clear water outlet 5, and the sewage treatment method of the ceramic membrane tube 6 mainly adopts the principle of cross-flow filtration. Since the ceramic membrane tube has capillary pores, when the sewage flows through the inner hole of the ceramic membrane tube, a part of the clean water and A part of impurities with a diameter smaller than the capillary pores can pass through the capillary pores, while the rest of the sewage flows out of the filter through the inner hole of the ceramic membrane tube 6. In order to better control the ceramic membrane filtration system, a valve can be set on the pipeline, and the valve can be adjusted according to Need to set, the valve can be manual, hydraulic, pneumatic or electric, for example, valve 9 is set on the pipeline between sewage tank 1 and water pump 4, with reference to Fig. 3; A drainpipe with a valve can also be arranged at the bottom of the dirty water tank 1 and the clean water tank 2 .

When the single-circulation filtration system is working, the sewage flows out from the sewage tank 1 and reaches the water pump 4 through the pipeline. The water pump 4 pressurizes the sewage, and the pressurized sewage reaches the filter 3 through the pipeline and is filtered. Clean water flows out from the clean water outlet 5 of the filter 3, and flows into the clean water tank 2 through the pipeline, and the remaining sewage after filtering flows back to the dirty water tank 1 through the pipeline, and this process can be recycled.

When two or more ceramic membrane filters 3 are used, they can be connected in series. Referring to Figure 4, the sewage outlet of the previous ceramic membrane filter 3 is connected to the sewage inlet of the latter ceramic membrane filter 3 through pipelines. ; Or use parallel connection, referring to Fig. 5, that is to connect the sewage inlets and sewage outlets of all ceramic membrane filters 3 together.

A liquid level sensor 8 is arranged in the sewage tank 1. With reference to FIG. When the sensor is 8, the liquid level sensor 8 controls the valve 9 to open, the water pump 4 is delayed to start, the sewage flows out from the sewage tank 1, and reaches the water pump 4 through the pipeline provided with the valve 9, and the water pump 4 pressurizes the sewage. The sewage reaches the ceramic membrane filter 3 through the pipeline, and is filtered. The filtered clean water flows out from the clean water outlet 5 of the ceramic membrane filter 3, and flows into the clean water tank 2 through the pipeline, and the remaining sewage after filtering is passed through the pipeline. The road flows back to the sewage tank 1, and this process can be carried out in a cycle. When the sewage in the sewage tank 1 is lower than the liquid level sensor 8, the water pump 4 is closed, and the valve 9 is closed.

The ceramic membrane filter 3 is a segmented ceramic membrane filter, and the segmented ceramic membrane filter 3 includes a sewage inlet 10, two or more filter sections 11, and a sewage outlet 13, with reference to Fig. 7 , sewage One end of the inlet 10 is connected to the water pump 4 through a pipeline, and the other end is connected and fixed to the filter section 11. One end of the sewage outlet 13 is connected to the sewage tank 1 through a pipeline, and the other end is connected and fixed to the filter section 11. The adjacent filter section 11 Connected together by a connecting device, each filter section 11 is provided with a clean water outlet 5, and the clean water outlet 5 is connected to a water pipe, and a plurality of ceramic membrane tubes 6 are arranged in the filter section 11, and the ceramic membrane tube 6 uses a fixing device and a filter section 11 The connection is fixed.

The segmented ceramic membrane filter 3 can also include a sewage inlet 10, two or more filter sections 11, one or more transition sections 12, and a sewage outlet 13, as shown in Figure 8, the sewage inlet 10 One end is connected and fixed to the pipeline, and the other end is connected and fixed to the filter section 11. One end of the sewage outlet 13 is connected to and fixed to the pipeline, and the other end is connected and fixed to the filter section 11. Adjacent filter sections 11 are connected and fixed together through the transition section 12. , each filter section 11 is provided with a clear water outlet 5, and the clear water outlet 5 is connected with a water pipe, and a plurality of ceramic membrane tubes 6 are arranged in the filter section 11, and the ceramic membrane tubes 6 are connected and fixed with the filter section 11 by a fixing device.

The sewage inlet 10 of the segmented ceramic membrane filter 3, the filter section 11, the transition section 12, the end face connection of the sewage outlet 13, the two ends of the ceramic membrane tube 6, and a sealing reducing device are also installed between the ceramic membrane tube 6. Vibration device 14, with reference to Fig. 9, this sealing device is elastic material such as rubber, silica gel, has shock-absorbing effect simultaneously, can prevent the breakage that ceramic membrane tube 6 takes place because of vibration.

The segmented ceramic membrane filter 3 can be arranged horizontally, obliquely, or vertically. The horizontal arrangement of a plurality of segmented ceramic membrane filters 3 is horizontal coaxial arrangement or horizontal different axis arrangement, and the longitudinal arrangement is longitudinal coaxial arrangement or longitudinal different axis arrangement. Arrangement, oblique arrangement is oblique coaxial or oblique different axis arrangement, Figure 10 is horizontal different axis, Figure 11 is vertical different axis, Figure 12 is oblique different axis, Figure 13 is horizontal coaxial, Figure 14 is longitudinal Coaxial, Figure 15 is oblique coaxial.

The ceramic membrane filter 3 is provided with a backwash port, and the backwash port is connected to the gas storage tank 23 through a pipeline provided with a valve 22. Referring to FIG. 16, the ceramic membrane filter 3 is also provided with a backwash sewage discharge pipe The pipeline is provided with a valve 24, a valve 26 is set on the pipeline connecting the sewage outlet of the filter 3 and the sewage tank 1, a valve 25 is established on the pipeline connecting the clean water outlet 5 of the filter 3 and the clean water tank 2, and a valve 25 is established on the pipeline connecting the sewage tank 2 A valve 9 is set on the connecting pipeline with the water pump 4. When the clean water flow rate of the clean water outlet 5 of the ceramic membrane filter 3 is lower than the set value, the valve 9, the valve 26 and the valve 25 are closed, the valve 22 and the valve 24 are opened, and the gas storage The compressed air in the tank 23 reaches the ceramic membrane filter 3 through the pipeline provided with the valve 22, and the clear water that has been filtered out in the ceramic membrane filter 3 is discharged into the ceramic membrane tube 6, thereby removing the blockage in the ceramic membrane. Impurities in the pipe 6 capillary pores are cleaned up, and the cleaned sewage is discharged to the outside of the cleaning and sweeping vehicle through the pipeline provided with valve 24.

The ceramic membrane filter 3 is provided with a backwash port, and the backwash port is connected to the water pump 4 through a pipeline provided with a valve 22, and the clean water tank 2 is connected to the water pump 4 through a pipeline provided with a valve 27, referring to FIG. 17 , The ceramic membrane filter 3 is also provided with a backwash sewage discharge pipeline, the pipeline is provided with a valve 24, a valve 26 is established on the pipeline connecting the sewage outlet of the filter 3 and the sewage tank 1, and a valve 26 is established on the pipeline connecting the sewage outlet of the filter 3, and the clean water outlet 5 of the filter 3 is connected to the sewage tank 1. A valve 25 is set on the connecting pipeline of the clean water tank 2, a valve 9 is set on the connecting pipeline between the sewage tank 2 and the water pump 4, and a valve 28 is set on the sewage inlet connecting pipeline between the water pump 4 and the filter 3, when the filter system works normally At this time, valve 22 and valve 27 are closed, valve 9, valve 25, valve 26 and valve 28 are opened, sewage flows out from sewage tank 1, reaches water pump 4 through valve 9, and the sewage pressurized by water pump 4 enters ceramic ceramics through valve 28 Membrane filter 3, the filtered clean water flows out from the clean water outlet 5, and reaches the clean water tank 2 through the pipeline and valve 25, and the remaining sewage after filtration flows to the sewage tank 1 through the pipeline and valve 26; when the ceramic membrane filter 3 When the clean water flow rate of the clean water outlet 5 is lower than the set value, the valve 27 and the valve 22 are opened, and the other valves are closed, and the clean water flows out from the clean water tank 2, passes through the pipeline with the valve 27 to the water pump 4, and then enters the ceramic membrane for filtration. The backwash port of the device 3, and the filtered water in the filter 3 is squeezed into the ceramic membrane tube 6, so as to clean up the impurities blocked in the capillary pores of the ceramic membrane tube 6, and the cleaned sewage is provided with a valve. 24 pipe discharge.

When a segmented ceramic membrane filter is used, the connection of the backwash port on each filter segment 11 is the same as that described above, and will not be described in detail here.

Described single cycle filtering system is also provided with strong cleaning box 30, with reference to Fig. 18, strong cleaning box 30 is connected with water pump 4 by the pipeline that is provided with valve 32, and the clear water outlet 5 of ceramic membrane filter 3 passes through strong cleaning box 30 The pipeline connection that is provided with valve 33, described strong cleaning tank 30 is connected with clear water tank 2 by the pipeline that is provided with valve 31, and the bottom of strong cleaning tank 30 is provided with the discharge pipe with valve 29, can make strong cleaning tank 30 The internal cleaning liquid is discharged, and a valve 26 is set on the connecting pipeline between the sewage outlet of the filter 3 and the sewage tank 1, and a valve 25 is set on the connecting pipeline between the clean water outlet 5 of the filter 3 and the clean water tank 2, and the connection between the sewage tank 2 and the water pump 4 A valve 9 is set on the pipeline, and a valve 28 is set on the sewage inlet connection pipeline between the water pump 4 and the filter 3. When the single-cycle filter system does not perform strong cleaning, the valve 31 is opened, and the strong cleaning tank 30 can be used as the clean water tank 2 When the single-circulation filter system works normally, the valve 33, valve 29 and valve 32 are closed, and the other valves are opened, the sewage flows out from the sewage tank 1, and reaches the water pump 4 through the valve 9, and the sewage pressurized by the water pump 4 Enter the ceramic membrane filter 3 through the valve 28, and the filtered clear water flows out from the clear water outlet 5, and reaches the clear water tank 2 through the pipeline and the valve 25, and the remaining sewage after filtering flows to the sewage tank 1 through the pipeline and the valve 26; The ceramic membrane filter 3 has not been used for a long time, and organic debris such as moss and algae are easy to grow on the inner surface of the ceramic membrane tube 6. It is difficult to effectively remove it by conventional cleaning methods. At this time, strong cleaning is required. Alkali solution, valve 32, valve 33, valve 28 are opened, other valves are closed, strong alkali solution flows out from the strong cleaning tank, passes through valve 32 to water pump 4, and then strong alkali solution reaches ceramic membrane filter 3 through pipeline and valve 33 , and then enter the ceramic membrane filter 3 for strong alkali cleaning, the filtered strong alkali solution flows out from the clear water outlet 5, flows back to the strong cleaning tank 30 through the pipeline and valve 28, and the remaining strong alkali solution is filtered from the ceramic membrane The sewage outlet of device 3 is discharged, and flows back to sewage tank 1 through valve 26 and pipeline, and strong alkali cleaning time is 30 seconds, and after strong alkali cleaning is finished, valve 29 is opened, and the strong alkali solution remaining in strong cleaning tank 30 is discharged, And put it in a special container. Carry out clear water flushing then, valve 27, valve 33, valve 25 and valve 26 are opened, all the other valves are closed, clear water flows out from clear water tank 2, reaches water pump 4 through valve 27, and clear water reaches the sewage inlet of ceramic membrane filter 3 by pipeline , then enter the ceramic membrane filter 3 for clean water cleaning, the filtered clean water flows out from the clean water outlet 5, flows back to the clean water tank 2 through the pipeline and valve 25, and the remaining sewage after filtering is discharged from the sewage outlet and flows back through the valve 26 Sewage tank 1, this process was carried out for 10 minutes. Carry out strong acid cleaning then, in strong cleaning box 30, inject strong acid solution, cleaning process is consistent with strong alkali cleaning process, cleaning time is 30 seconds, use clear water to clean 10 minutes again after strong acid cleaning is finished, finish strong cleaning process.

As shown in Figure 19, the single-cycle filter system is also provided with an automatic vibrating filter screen 35, and the automatic vibrating filter screen 35 is installed at the bottom of the sewage tank 1, and a vibrating pump 34 can also be arranged on the described automatic vibrating filter screen 35, and the sewage A pressure gauge 36 and a pressure switch 37 can also be installed on the pipeline connected between the tank 1 and the water pump 4. When the single-cycle filter system was working normally, the sewage flowed out from the sewage tank 1, and was filtered through the filter screen 35, and the Larger garbage such as leaves and garbage bags are filtered out, the coarsely filtered sewage reaches the water pump 4, the sewage pressurized by the water pump 4 enters the filter 3, and the filtered clean water flows out from the clean water outlet 5, and reaches the clean water through the pipeline tank 2, the remaining sewage after filtering flows to the sewage tank 1 through the pipeline. When the surface of the automatic vibrating filter screen 35 is covered by garbage, there is a negative pressure in the connecting pipeline between the sewage tank 1 and the water pump 4, and when the negative pressure in the pipeline reaches a certain level, the pressure switch 37 detects a pressure signal , and feedback signal, start vibration pump 34, described automatic vibration filter screen 35 can be one deck, two layers, also can be multi-layer filter screen, the mesh aperture of two-layer and multi-layer filter screen can be different.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (11)

1. A single-circulation filtration system applied to washing and sweeping vehicles, including a sewage tank, a clean water tank, a water pump and connecting pipelines, characterized in that the sewage tank is connected to the water pump through the pipeline, and the water pump is connected to one or more than one filter through the pipeline. The filter is connected to the sewage tank through the pipeline, and the clean water outlet of the filter is connected to the clean water tank through the pipeline. The filter is a ceramic membrane filter, and the ceramic membrane filter is a ceramic membrane tube arranged in a sealed shell. The two ends of the sealed shell are respectively used as the sewage inlet and the sewage outlet to connect with the pipeline, and the clean water outlet is arranged on the sealed shell. 2. A single-circulation filtration system applied to sweeping vehicles according to claim 1, characterized in that a liquid level sensor is provided in the sewage tank, and the liquid level sensor is connected and controlled by a connecting pipe installed between the sewage tank and the water pump Valve on the way. 3. A single-cycle filtration system applied to cleaning and sweeping vehicles according to claim 1, wherein the ceramic membrane filter is a segmented ceramic membrane filter, comprising two or more filter sections, Adjacent filter sections are fixed by connecting devices. 4. A single-cycle filtration system applied to cleaning vehicles according to claim 1, characterized in that said ceramic membrane filter is a segmented ceramic membrane filter, including two or more stages of filtration Segment, one or more filter segments, adjacent filter segments are connected and fixed by transition segments. 5. A kind of single-cycle filtration system applied to washing and sweeping vehicles according to claim 3 or 4, characterized in that between the ceramic membrane tubes in the segmented ceramic membrane filter and between the two filter sections of each section There is also a sealed shock absorber at the end. 6. A single-cycle filtration system applied to cleaning vehicles according to claim 1, wherein the ceramic membrane filter is provided with a backwash port, and the backwash port is connected to a water pump through a pipeline , the water pump is connected to the clean water tank through a pipeline provided with a valve. 7. A single cycle filtration system applied to cleaning vehicles according to claim 1, characterized in that the ceramic membrane filter is provided with a backwash port, and the backwash port passes through the pipeline and the gas storage tank connection. 8. According to claim 3 or 4, a kind of single-cycle filter system applied to washing and sweeping vehicles is characterized in that each section of the filter section of the segmented ceramic membrane filter is provided with a backwash port, so The backwash port is connected to the water pump through a pipeline, and the water pump is connected to the clean water tank through a pipeline provided with a valve. 9. according to claim 3 or 4, a kind of single-cycle filter system applied to washing and sweeping vehicles is characterized in that each section of filter section of the segmented ceramic membrane filter is provided with a backwash port, so The backwash port mentioned above is connected with the gas storage tank through the pipeline. 10. A single-cycle filter system applied to washing and sweeping vehicles according to claim 1, characterized in that the single-cycle filter system also includes a strong cleaning tank, and the strong cleaning tank passes through a pipeline with a valve and a water pump Connection, the clean water outlet of the filter is connected with the strong cleaning tank, and the strong cleaning tank is connected with the clean water tank through a pipeline provided with a valve. 11. A single-cycle filter system applied to cleaning vehicles according to claim 1, characterized in that the single-cycle filter system also includes an automatic vibration filter, and the automatic vibration filter is installed in the sewage tank A vibration pump is installed at the bottom, and a pressure gauge and a pressure switch are installed on the pipeline connecting the sewage tank and the water pump.