CN209076230U - A kind of dmp filter purification device - Google Patents

Abstract

The utility model relates to a rainwater filtration and purification device, which is at least composed of a buoy coarse filter screen, a suspended partition wall, a sludge collection tank, a sludge collection net, a sludge discharge pipe and a fine iron wire filter screen; the buoy coarse filter screen is arranged at a water inlet and suspended partitions. The buoy coarse filter is composed of a single layer of barbed wire and symmetrical buoys on both sides. A collection net that is manually pulled is laid in the tank of the sludge collection tank. The material of the collection net is a wire mesh with small pores, which is laid against the wall of the tank. It consists of a cuboid-shaped collection container. The utility model is that the rainwater is filtered twice in the device, and the large solid particles and small solid particles of the floating objects are filtered separately, so as to prevent the large particles and large-area floating objects from adhering to the filter screen during the filtering process and block the pores. Therefore, the filtration speed is increased and the purification efficiency is improved. And the solid waste is concentrated in the device, which can be cleaned manually, the operation is convenient, and the cost is reduced.

Description

A rainwater filter and purification device

technical field

The utility model belongs to the technical field of rainwater utilization and water supply and drainage, in particular to a rainwater filtering and purification device.

Background technique

my country is currently facing a serious shortage of water resources. The purification of sewage, especially the secondary utilization of rainwater, is an important part of energy conservation and environmental protection. Whenever there is precipitation, there is a huge pressure on the rainwater pipe network in the city. In order to promote the timely drainage of rainwater, and to carry out preliminary purification through physical processes during the drainage process to improve water quality, the urban rainwater management system, which is mainly based on rainwater collection and utilization, is constantly being improved. Rainwater collection is mainly based on roof rainwater and road rainwater, but its water quality is poor. The current rainwater collection and utilization facilities are mostly set up with initial rainwater disposal facilities and rainwater collection facilities with filtration systems installed. The construction is complicated, the investment cost is high, and the filtration process is easy to block and difficult to clean. Published patent CN204898776U, 2015-12-23 mentioned rainwater filtration in a rainwater filtration storage device, but there are the following problems: 1. The filter (14) structure is composed of two layers of wire mesh sandwiching a layer of filter membrane, wherein the filter membrane pores It is small and easy to block. In order to ensure the filtration speed, it is necessary to pressurize the filtration side. Under the normal pressure inside the device, the existence of the filter membrane slows down the filtration speed, which is easy to cause excessive water flow to accumulate in the device, which cannot be normal. discharge. 2. The sludge after the precipitation is completed is directly discharged from the sludge discharge pipe (10), and the large and small particles are mixed, which is easy to block the nozzle, causing the device to fail to operate normally. 3. The replacement method of the filter membrane in the filter disc of the device is to manually go down to the well and take the whole filter disc to the top of the well, replace the filter membrane sandwiched by the wire mesh and clean the double-layer wire mesh, which is difficult and unsafe to operate. Published patent CN207016579U, 2018-02-16. A rainwater precipitation filtering device also has the problem that the filter membrane pores in the filter sheet (11) are small, and the sludge after the precipitation is completed is directly discharged from the sludge discharge pipe (6). Therefore, in view of these problems, it is necessary to design a rainwater filtration and purification device to ensure smooth water flow, the discharge process of excess sludge and waste water does not block the sludge discharge pipe, and a safe and convenient device that can complete the cleaning of the filter screen on the artificial well is an urgent need to solve. The problem.

Utility model content

In order to solve the problems of the prior art, the utility model relates to a rainwater filtration and purification device. Using the device, rainwater is collected and filtered during precipitation, and sewage and sludge are separately discharged to ensure smooth water flow, and excess sludge and waste water are discharged. It is a safe and convenient rainwater filtration and purification device and filtration method, such as the unblocking of the mud discharge pipe in the discharge process, and the cleaning of the filter screen can be completed on the artificial well, which is convenient for the urban pipe network to be unblocked, and it is not easy to block the pipeline.

The utility model reforms the internal structure of the device on the basis of the prior art, and preserves the device form and the suspended partition wall inside the device in the prior art; Large floating solid particles and small solid particles are filtered separately. The advantage is to prevent large particles and large-area floating objects from adhering to the filter during the filtration process, blocking the pores, and increasing the filtration speed after improvement; Use a fine wire filter for secondary filtration to replace The filter membrane in the existing patented filter sheet has a good purification effect; the device adds a sludge collection tank and a collection net that can be manually pulled and replaced in the collection tank, which can gather most of the sludge in the net, and the collection net and The removal method of the wire filter is to manually use the long arm hook to lift the edge of the mesh on the well, without the need for personnel to go down to the well to take the mesh, without blocking the sludge discharge pipe, and the operation is safe and convenient. After the dewatering process is completed, the remaining sewage and extremely fine particles are removed from the bottom Mud pipe row.

The utility model adopts the following technical solutions:

A rainwater filtration and purification device at least consists of a buoy coarse filter, a suspended partition wall, a sludge collection tank, a sludge collection network, a sludge discharge pipe, and a fine iron wire filter; the buoy coarse filter is arranged at the water inlet and the suspended partition wall. between.

The buoy coarse filter is composed of a single-layer barbed wire and symmetrical buoys on both sides.

The sludge collection tank is characterized in that a collection net that is manually pulled is laid in the tank. The material of the collection net is a wire mesh with small pores, which is laid against the wall of the tank. It is composed of barbed wire with small pores and is a cuboid-shaped collection container.

There is a horizontal distance between the sludge collection net and the suspended compartment. When the sludge collection net is pulled up and put back into the well, it will not be blocked by the suspended partition wall.

The iron wire filter screen is to filter the water entering the water outlet again. After the precipitation is completed, the solid impurities flow into the bottom sludge collector along the water flow. When cleaning, a long arm hook is used on the well to hook the thin wire filter screen. Pull up, and after cleaning, put the fine wire mesh back into the corresponding card slot and mounting seat in the same way to realize active cleaning and installation.

In the method for filtering and purifying rainwater by using the device of the utility model, during precipitation, the rainwater enters the rainwater filtering and purifying device through the water inlet pipe. The floating buoys on both sides of the buoy coarse filter screen drive the entire buoy coarse filter screen to rotate from a vertical state to a horizontal state, and the inflowing water is filtered for the first time to remove large particles and plastic floating objects; the water after preliminary filtering passes through the mouth of the drain pipe The fine iron wire filter set is set for secondary filtration. After removing small particles, it is discharged from the drain pipe; when the precipitation process is completed, the water level in the device drops, and the coarse filter screen of the buoy returns to a vertical state, and the large particles and plastic floating objects on it will follow. The remaining water flow flows into the collection device in the sludge collection tank, the small particles at the mouth of the drain pipe flow into the collection device in the sludge collection tank with the remaining water flow, and the remaining sewage in the entire device is discharged from the bottom sludge discharge pipe.

Compared with the prior art, the beneficial effect of the utility model is that the rainwater is filtered twice in the device, and the large solid particles and small solid particles of the floating objects are filtered separately. Large particles and large areas of floating objects adhere to the filter screen, blocking the pores. Therefore, the filtration speed is increased and the purification efficiency is improved. In addition, the solid waste is concentrated in the device, which can be cleaned manually, and the operation is convenient and the cost is reduced.

Description of drawings

Figure 1: Schematic diagram of the device, when it is not in the process of precipitation, the buoy filter 5 is in a vertical state;

Figure 2: Schematic diagram of the device, when it is raining, the buoy filter 5 is in a horizontal state;

Among them: 1. Ground, 2. Manhole cover, 3. Water inlet pipe, 4. Buoy, 5. Buoy coarse filter, 6. Suspended partition wall, 7. Water inlet area, 8. Sludge discharge pipe, 9. Sludge collection tank , 10. Mounting seat, 11. Drain pipe, 12. Card slot, 13. Fine wire filter, 14. Filtration and sedimentation area, 15. Sludge collection net

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model is further described:

The rainwater filtration and purification device shown in Figure 1 and Figure 2 is composed of ground (1), manhole cover (2), water inlet pipe (3), buoy (4), buoy coarse filter (5), suspended partition wall (6) ), water inlet area (7), sludge discharge pipe (8), sludge collection tank (9), mounting seat (10), drain pipe (11), card slot (12), fine wire filter (13), The filter sedimentation area (14) and the sludge collection net (15) are formed; the buoy coarse filter net (5) is arranged between the water inlet pipe (3) and the suspended partition wall (6). The buoy coarse filter is composed of a single-layer wire mesh and two symmetrical buoys (4); the device is connected under the manhole cover (2) on the ground (1), and during precipitation, the rainwater enters the rainwater filtering and purifying device through the water inlet pipe (3), Under the blocking action of the suspended partition wall (6), the water flow energy is weakened and flows toward the bottom of the device. When the water level rises, the buoys (4) on both sides of the buoy coarse filter (5) float and drive the entire buoy coarse filter to rotate from a vertical state to a horizontal state, and the inflowing water is filtered for the first time to remove large particles and plastic floating objects. Wait. The water that has been preliminarily filtered passes through the water inlet area (7) and the filter sedimentation area (14) through the fine iron wire filter screen (13) set at the mouth of the drain pipe to obtain secondary filtration. Discharge, wherein, the fine wire filter should be fixed by the mounting seat (10) and the card slot (12); when the precipitation process is completed, the water level in the device drops, the buoy coarse filter returns to the vertical state, and large particles and plastic floats on it. Under the action of backwashing with the remaining water flow, it flows into the sludge collection net (15) in the sludge collection tank (9), and the small particles at the mouth of the drain pipe flow into the sludge under the backwashing action of the remaining water flow. In the sludge collection net in the collection tank, the remaining sewage in the whole device is discharged from the bottom sludge discharge pipe (8). After the precipitation process is over, the sludge collection net is cleaned: the sludge and solid waste are collected in the net, and two long-arm hooks can be used on the well to hook the edge of the collection net, pull it upward, and take out the collection net as a whole for cleaning. In the same way, put the collection net back into the sludge collection tank. Among them, there is a horizontal distance between the sludge collection net and the suspended compartment. When the sludge collection net is lifted and put back on the well, it will not be blocked by the suspended partition; the cleaning of the fine wire mesh (13) in front of the water outlet pipe: use a long arm on the well Hook, hook the fine wire filter and pull it upwards. After cleaning, put the fine wire mesh back into the corresponding slot and mounting seat in the same way. Therefore, the sludge collection screen and the filter screen at the front of the water outlet pipe can be manually removed and cleaned on the well.

Compared with the prior art, the beneficial effect of the utility model is that the rainwater is filtered twice in the device, and the large solid particles and the small solid particles of the floating objects are filtered separately, no filter membrane, no need to pressurize, under the premise of effective filtration. It can ensure the smooth flow of the underground pipe network, increase the filtration speed and improve the purification efficiency. After the precipitation is completed, under the backwashing effect of the remaining rainwater in the device, the filter screen is cleaned, the solid waste is concentrated in the device, and the filter screen and the collection screen can be lifted and cleaned by artificial wells, which is convenient, safe and cost-effective to operate.

Claims (1)

1. A rainwater filtration and purification device is composed of a buoy coarse filter, a suspended partition wall, a sludge collection tank, a sludge collection network, a sludge discharge pipe, and a fine wire filter; the buoy coarse filter is arranged at the water inlet and the suspended partition. between the walls; the buoy coarse filter is composed of a single-layer wire mesh and symmetrical buoys on both sides; the sludge collection tank, a collection net that is manually pulled is laid in the groove, and the collection net is made of wire mesh with small pores, which is fitted The wall of the tank is laid, and the side that receives the sludge inflow has no mesh, and the other five sides are composed of wire mesh with small pores, which are in the form of a cuboid collection container; there is a horizontal distance between the sludge collection mesh and the suspended compartment. When the mud collection net is used, it will not be blocked by the suspended partition wall; the wire filter net is used to filter the water entering the outlet pipe again, and a long arm hook is used on the well to hook the fine wire filter net and pull it upwards to clean it. and install.