CN201040205Y - Rainwater Filtration Equipment - Google Patents

Abstract

The utility model relates to a rainwater filtering device, which belongs to the technical field of filtering. The utility model includes a clear water pool, four filter cartridges, water inlet pipes, backwash pipes, connecting pipes, water inlet valves, backwash valves, and vent valves; the four filter cartridges have the same structure, and the filter cartridges are divided into three layers. , the upper layer is the clean water tank, the middle layer is the filter chamber, and the lower layer is the filtered water tank. The clean water tanks are connected through connecting pipes, the clean water tank and the filter chamber are sealed, and the filter chamber is provided with a filter material layer. The filtered water tank is separated, and the filtered water tank is connected with the upper fresh water tank through four connecting pipes; the water inlet pipe and the backwash water pipe are connected to the filter chamber through the side wall of the filter cartridge. The utility model has rainwater filtering equipment with four filter cartridges running in parallel or alternately, which solves the problems of complex structure, power consumption and water consumption and short service life of the existing water filtering equipment.

Description

Rainwater Filtration Equipment

technical field

The utility model relates to equipment in the technical field of environmental protection engineering, in particular to rainwater filtering equipment.

Background technique

At present, with the development of my country's national economy, the problems of water resource scarcity and water resource pollution are becoming more and more prominent. Rainwater is a kind of renewable water resource with relatively light pollution and wide distribution. It can be reused after filtration and has broad prospects. The current pressure tank filter in the market consumes a lot of electricity and water, and its effect is poor. The valveless filter type filter has a complex structure and is inconvenient to install and maintain.

After searching the existing technical documents, it is found that the Chinese utility model patent number: 02294741.8, the patent name: water filtration equipment, this system includes a booster pump, a clean water tank, a clean water tower, a filter cartridge, a backwash pump, an overflow tank, etc. But its disadvantages are: complex system structure, power consumption and water consumption, and short service life.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art and provide a rainwater filtering device. The utility model has rainwater filtering equipment with four filter cartridges running in parallel or alternately, which solves the problems of complex structure, power consumption and water consumption and short service life of the existing water filtering equipment.

The utility model is realized through the following technical solutions. The utility model includes a clear water pool, four filter cartridges, water inlet pipes, backwash pipes, connecting pipes, water inlet valves, backwash valves, and vent valves; the water inlet valves are installed in the inlet On the water pipe, the backwash valve is installed on the backwash pipe; the clean water pool is connected to the four filter cartridges through the connecting pipe; the four filter cartridges have the same structure, and the filter cartridges are divided into three layers, the upper layer is the clean water tank, the middle layer It is a filter chamber, and the lower layer is the filtered water tank. The clean water tanks are connected through connecting pipes. The clean water tank and the filter chamber are sealed. There is a filter material layer in the filter chamber. The rear water tank communicates with the upper clean water tank through four connecting pipes; the water inlet pipe and the backwashing water pipe pass through the side wall of the filter cartridge and communicate with the filter chamber.

In the filter cartridge, an observation hole is provided on the side wall of the middle part, so that the filtering effect can be observed at any time.

The clean water tank is provided with a water level gauge on its side wall, which is used to set the water level elevation at the end of backwashing.

The clean water tank has an open top.

The top of the filter chamber is provided with a water distribution port.

The clean water tank and the filter chamber are separated by a partition, and the partition is welded to the inner walls of the clean water tank and the filter chamber respectively.

The utility model also includes a pump, the outlet end of the pump is connected with the water inlet pipe, and the inlet end of the pump is placed in the external source water body.

When the utility model is used for filtering, the pump sends water into the filter chambers of the four filter cartridges, and the filtered clean water flows into the clean water tank on the top of the filter cartridges, and then flows into the clean water pool. When the intercepted matter of a certain filter cartridge reaches a certain amount, the backwash valve of the filter cartridge is opened, the filtering process is converted into a backwashing process, the clean water tank becomes a backwashing water tank, and the impurities trapped in the filtering process in the filter chamber are discharged through the backwashing pipe . When the backwashing process is over, close the backwashing valve, and the system will automatically go to the next filtration cycle.

The working process of the utility model is: the raw water is pumped into the filter chambers of four filter cartridges, the filter material layer in the filter chamber is a composite filter material layer composed of quartz sand, anthracite, etc. match. The filtered clean water flows into the filtered water tank of the lower layer, and the filtered water tank communicates with the upper clean water tank through a connecting pipe, and the open mouth of the clean water tank communicates with the atmosphere. The clean water tanks of each filter cartridge are connected through connecting pipes, and the filtered water flows into the clean water tanks and then enters the clean water pool for storage. A viewing hole is provided on the middle side wall of the filter cartridge. When the retentate of a certain filter cartridge reaches a certain amount, manually open the backwash valve of the filter cartridge, and the filtering process of the filter cartridge will be converted into a backwash process. The clean water tanks on the upper part of each filter cartridge are connected to each other. Converted to a backwash water tank, the direction of water flow is exactly opposite to the direction of filtration, the filter material is tossed and washed, and the impurities trapped in the filtration process in the filter chamber are discharged through the backwash pipe, and a water level gauge is set on the side wall of the clean water tank to set the backwash End the water level elevation, close the backwash valve, the backwash process is over, and go to the next filtration cycle. When one filter cartridge is filtering, the other filter cartridges are performing normal filtering process. The conversion between the filtration process and the backwashing process is only controlled by the same backwashing valve. The filter cartridges can be operated independently or in parallel. When one of the filter cartridges is backwashed or overhauled, the other filter cartridges can work normally.

The utility model does not need complex air-water backwashing equipment, works at low pressure, and can save electric energy required for system operation; the backwashing process with small resistance makes the backwashing process very smooth, can reduce backwashing water volume and backwashing time, and The whole device achieves the purpose of saving water. The system has a compact structure, a small footprint, convenient installation and maintenance, and low requirements for the place of use. The utility model is made of hard polyvinyl chloride (UPVC) material, has strong corrosion resistance and greatly improves service life. Each filter cartridge is controlled by an independent valve, which can work independently or in parallel and interactively. The system is easy to operate. The composite filter material layer composed of quartz sand and anthracite can be fully backwashed during the backwashing process without hardening, and there is no need to replace the filter material during use. For large processing flow, multiple sets of equipment can be operated in parallel, and equipment such as flocculation and disinfection can be loaded, and the system has strong scalability and compatibility. According to the needs of control, manual control or computer programming control can be selected.

Description of drawings

Fig. 1 is the structural front view of the utility model.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a structural schematic diagram of the filter cartridge of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the embodiment of the present utility model is described in detail: present embodiment is carried out under the premise of technical scheme of the present utility model, has provided detailed implementation mode and process, but the protection scope of the present utility model is not limited to the following the described embodiment.

Embodiment Referring to Figures 1, 2, and 3, this embodiment includes: four filter cartridges 1, a clear water tank 2, a water inlet valve 3, a backwash valve 4, a first connecting pipe 13, a second connecting pipe 14, and a water inlet pipe 17 , backwash pipe 18, vent valve 19; clean water tank 2 is connected with four filter cartridges 1 through second connecting pipe 14; four filter cartridges 1 have the same structure, filter cartridge 1 is divided into three layers, and the upper layer is clean water tank 6 , the middle layer is the filter chamber 8, the lower floor is the filtered water tank 12, the clean water tanks 6 are connected through the first connecting pipe 13, the clean water tank 6 and the filter chamber 8 are sealed, and the filter chamber 8 is provided with a filter material layer 10, The filter chamber 8 is separated from the filtered water tank 12 by a filter plate 11 , and the filtered water tank 12 communicates with the upper clear water tank 6 through four first communication pipes 13 . The middle side wall of the filter cartridge 1 is provided with an observation hole 9, so that the filtering effect can be observed at any time. The side wall of the clear water tank 6 is provided with a water level gauge, which is used to set the water level elevation 16 at the end of backwashing. The top of the filter chamber 8 is provided with a water distribution port 5, and both ends of the water distribution port 5 are respectively connected to a water inlet pipe 17 and a backwash pipe 18. The water inlet valve 3 is installed on the water inlet pipe 17 of the filter cartridge 1, the backwash valve 4 is installed on the lower part of the backwash pipe 18 of the filter cartridge 1, and the vent valve 19 is installed on the bottom of the filtered water tank 12 of the filter cartridge 1, so that the four filters Cartridges 1 are independently controlled with their own valves. Clear water tank 6 and filter chamber 8 are separated by dividing plate 7 between the two, and dividing plate 7 is welded with the inwall of clear water tank 6 and filter chamber 8 respectively.

This embodiment also includes a pump, the outlet of the pump is connected to the water inlet pipe 17, and the inlet of the pump is placed in the external water body.

The work of the utility model includes a filtering process and a backwashing process.

Filtration process: the raw water is lifted by the pump, distributed into the four filter cartridges 1 through the water inlet pipe 17, and the water inlet pipe 17 of each filter cartridge 1 is provided with a water inlet valve 3. The water enters each filter chamber 8 through the water distribution port 5, and the impurities in the water are intercepted by the filter material layer 10, and the change of the intercepted amount of impurities in the filter chamber 8 can be understood through the observation hole 9. The filter chamber 8 is separated from the upper clean water tank 6 by a partition 7 . The filtered water flows into the filtered water tank 12 through the filter plate 11, and then flows into the fresh water tank 6 at the upper part of each filter chamber through the first connecting pipe 13. The clean water tanks 6 of the upper filter cartridges are connected through the first connecting pipe 13, and the clean water in the clean water tank 6 flows into the clean water pool 2 for storage through the second connecting pipe 14, and the normal filtration process ends.

Backwash process: When the intercepted matter in a certain filter cartridge 1 reaches a certain amount, or when backwashing is required, the backwash valve 4 of the filter cartridge 1 is opened, and the backwash valve 4 forms a pressure difference with the water level of the clean water tank 6, and the filter cartridge The inlet water of 1 is discharged from the backwash pipe 18 through the backwash valve 4 to form suction, and the water in the filter chamber 8 is under the pressure head of the clean water tank 6 and the suction of the backwash pipe 18, and the water flows upward through the water distribution port 5 and the inlet The water is discharged together, the water in the clean water tank 6 passes through the first connecting pipe 13, the filtered water tank 12, and the filter plate 11 flows into the filter chamber 8. The direction of the water flow is just opposite to the filtering process, and the filter material layer 10 is expanded, and the filter material is fully Backwashing, the backwashing water combined with the trapped impurities is discharged through the backwashing pipe 18. At this moment, the normal filtration water level 15 of the clean water tank 6 begins to drop, and the clean water tanks 6 on the top of each filter cartridge 1 are connected to each other. During backwashing, the clean water tank 6 is converted into In the backwash water tank, the filtered clean water of other filter cartridges 1 also becomes backwash water. When the water in the clean water tank 6 drops to the backwash end water level 16, the backwash ends, and the backwash valve 4 is closed, and the system automatically switches to normal filtration process.

It is only necessary to control the backwash valve 4 to realize the conversion of system filtration and backwash. The backwash valve 4 can be opened manually or electrically. When a certain filter cartridge 1 needs to be repaired or maintained, just close the filter The water inlet valve 3 of the cylinder 1, the filter cylinder 1 needs to be vented, only need to open the vent valve 19, the operation is simple and convenient. The filter cartridges 1 can be operated independently or in parallel. When one of the filter cartridges 1 is backwashed or overhauled, the other filter cartridges 1 can work normally.

Claims (7)

1. A rainwater filtering device, including a clean water tank, four filter cartridges, water inlet pipe, backwash pipe, connecting pipe, water inlet valve, backwash valve, and vent valve; the water inlet valve is installed on the water inlet pipe, and the backwash valve Installed on the backwashing water pipe; the clear water pool is connected to four filter cartridges through a connecting pipe. The feature is that the four filter cartridges have the same structure, and the filter cartridges are divided into three layers. The lower layer is the filtered water tank, and the clean water tanks are connected through connecting pipes. It communicates with the upper clear water tank through four connecting pipes; the water inlet pipe and the backwashing water pipe pass through the side wall of the filter cartridge to connect with the filter chamber. 2. The rainwater filtering device according to claim 1, characterized in that, the side wall of the filter cartridge is provided with an observation hole. 3. The rainwater filtering device according to claim 1, characterized in that, the side wall of the clean water tank is provided with a water level gauge. 4. The rainwater filtering device according to claim 1 or 3, characterized in that, the top end of the clean water tank is open. 5. The rainwater filtering device according to claim 1, characterized in that, the top of the filter chamber is provided with a water distribution port. 6. The rainwater filtering device according to claim 1, wherein the clean water tank and the filter chamber are separated by a partition, and the partition is welded to the inner walls of the clean water tank and the filter chamber respectively. 7 . The rainwater filtering device according to claim 1 , further comprising a pump, the outlet end of the pump is connected to a water inlet pipe, and the inlet end of the pump is placed in an external source of water.

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