CN105692948B - A kind of dmp filter purifier - Google Patents

Abstract

The invention discloses a rainwater filtering and purifying device. The device has a double-wall structure. The chamber surrounded by the inner chamber wall is a filtering chamber. A filtering component is arranged in the filtering chamber, and a collecting port is arranged above the filtering member. The chamber between the wall and the outer chamber wall is a drainage chamber, the bottom of the inner chamber wall is provided with a through hole, which connects the filter chamber with the drainage chamber, the upper part of the outer chamber wall is provided with a water inlet connected with the drainage chamber, and the bottom of the device is provided with a filter Cavity through the sewage outlet. The beneficial effect of the present invention is that the filtering parts are modularized and combined, and the reverse filtering scheme is adopted, so that the water quality of rainwater filtration is good, and at the same time, the problem of automatic cleaning and discharge of filtering residues is effectively solved, the filtering and purification efficiency is high, and maintenance is convenient.

Description

A rainwater filter and purification device

technical field

The invention relates to a filtering and purifying device, in particular to a device for filtering, purifying and collecting rainwater in sponge city construction.

Background technique

In the past, the idea of urban construction to solve the problem of rainwater drainage was to quickly discharge and release, collect and drain the municipal rainwater pipe network system through the ground stormwater outlet, and finally divert it to natural waters. This treatment method does not consider the collection and reuse of rainwater, which wastes natural resources, and does not set up storage and purification facilities. In the heavy rainfall environment, the garbage and sundries involved in the pipeline system by rainwater not only easily block the pipeline, It will also cause environmental pollution to natural waters.

In order to solve the above problems, the country has proposed the concept of "sponge city", which is a new concept of stormwater management designed for modern cities, so that urban infrastructure can adapt to environmental changes, and can flexibly respond to the impact of rainwater. Rainwater, retained rainwater, purified rainwater, stored rainwater, infiltrated rainwater, and released the stored rainwater when needed;

Before the rainwater enters the final collection container for storage, the rainwater must be filtered and purified; in traditional rainwater filtration and purification devices, most of the filter elements are made of one or more materials mixed in a container, and the water inlet is introduced from the upper part of the filter element. Using the weight of water to filter downwards, this filtering method has the following disadvantages: (1) The filter material is single or multiple materials are mixed together, which is not conducive to the classification and purification of suspended particles in rainwater, and is not conducive to the interchangeability of filter elements in the later stage And maintenance. (2) Rainwater is filtered from top to bottom, so that the filtered impurities will remain on the filter element. Over time, these impurities will accumulate too much, which will pollute and block the filter element, resulting in a decrease in the filtration efficiency of the filter element. At the same time, the quality of the filtered water cannot be guaranteed. , Seriously, it will even block the filter element; (3) After the traditional filter element has been used for a period of time, the filter element needs to be rinsed with clean water to remove the impurities attached to it. In serious cases, the filter element material needs to be replaced as a whole, which will waste a lot The clean water will also increase the maintenance cost and increase the workload of workers.

Contents of the invention

The purpose of the present invention is to provide a filter and purification device that realizes high-efficiency deep filtration of rainwater and automatic cleaning and discharge of filtered impurities, which is achieved through the following technical solutions:

A rainwater filtration and purification device, the device is a double-wall structure, the chamber surrounded by the inner cavity wall is a filter cavity, a filter component is arranged in the filter cavity, a collection port is arranged above the filter component, the inner cavity wall and the outer cavity The chamber between the walls is a drainage chamber, the bottom of the inner chamber wall is provided with a through hole, which connects the filter chamber with the drainage chamber, the upper part of the outer chamber wall is provided with a water inlet connected with the drainage chamber, and the bottom of the device is provided with a sewage discharge pipe connected with the filter chamber. mouth.

The present invention adopts the reverse filter design, and through the above-mentioned structural arrangement, when the water flow enters the drainage cavity from the water inlet, it enters the bottom of the filter cavity through the through hole to accumulate, and when the liquid level is accumulated to a certain level, it enters the filter cavity from the bottom through the filter component, Then enter the rainwater collection system through the collection port.

As an option, the area of the water inlet is greater than the area of the sewage outlet. When the water flow enters from the water inlet, it will not all enter the sewage outlet quickly, and the undischarged rainwater will be accumulated in the filter chamber and enter the collection port through the filter part due to the liquid level pressure to realize reverse filtration.

As an option, the bottom of the body is provided with a valve device for controlling the opening and closing of the sewage outlet.

Alternatively, the valve device is a float valve.

When the liquid level continues to a certain stage, the float valve will close the sewage outlet, further improving the liquid level accumulation and filtration speed.

As an option, the ball float valve includes a float ball, a lever and a ball plug, and a liquid leakage port is arranged on the ball plug.

As an option, the filter component includes a frame and a filter module, several layers of filter grids are arranged inside the frame, the filter module is arranged in the filter grid, and a filter core is arranged in the filter module, and the size and size of the filter modules are equal to each other. replaceable.

Alternatively, the filter core body is quartz sand, activated carbon, filter screen or filter cloth.

As an option, the frame is provided with three layers of filter grids. According to the direction of rainwater filtration, the filter core set in the first layer of filter module is 50 mesh quartz sand, the middle layer is 100 mesh quartz sand, and the tail layer is activated carbon.

The filter components adopt filter modules of the same size and size, which can be replaced at any time. When maintaining or adjusting the filter requirements, the filter modules can be pulled out from the filter grid for replacement; the filter core is made of various materials, which can be replaced at any time according to the filter requirements ; The first layer and the middle layer filter the impurities and large particles in the rainwater, and the activated carbon in the tail layer absorbs the fine particles to achieve the purpose of purification. If there is an installation gap between the filter component and the inner cavity wall, a sealing layer or a sealing sheet can be added at the joint between the edge of the frame and the installation position to prevent unfiltered rainwater from leaking from the joint.

As an option, an inspection port is provided on the top of the device, and maintenance personnel can enter the interior of the device to maintain the filter components and the float valve, which is convenient and reliable.

Work process of the present invention is:

1. Rainwater flows in from the water inlet through the drainage cavity, and the impurities deposited after the last filtration are flushed out from the sewage outlet. Since the area of the sewage discharge outlet is smaller than the water inlet, the rainwater accumulates in the filter cavity and the drainage cavity;

2. When the liquid level is accumulated to a certain position, the float valve will close the sewage outlet to further increase the liquid level accumulation speed;

3. Under the action of hydraulic pressure, the rainwater enters the top of the filter chamber through the filter part, and the filtered and purified rainwater enters the rainwater collection pipeline through the collection port;

4. When the rainfall stops, the water inlet stops entering the water, and the rainwater accumulated in the device is slowly discharged from the leakage port on the ball plug of the float valve, and the water level in the filter chamber drops to bring out the filter impurities attached to the filter module. Deposits on the bottom of the filter cavity;

5. When the liquid level drops to a certain stage, the float valve opens, and the remaining rainwater is discharged from the sewage outlet. At the same time, some impurities deposited by the filter are taken away, and the device is reset to wait for the next filter.

In summary, the beneficial effects of the present invention:

1. The components are designed in a modular manner, and the external dimensions of the filter modules are exactly the same. Each module is filled with a filter material, and the modules filled with different filter materials are combined together, which can filter and purify the fine suspended particles in the rainwater in stages and improve the filtering effect. At the same time, when the filter element needs to be repaired and replaced, it can be replaced with a new module, and the maintenance is very simple;

2. Use the countercurrent method to filter, so that the filtered impurities remain in the lower part of the filter module. When the filtration process ends, the countercurrent rainwater will take the impurities attached to the lower part of the module out of the filter module under the action of gravity;

3. The sewage outlet and float valve set at the bottom of the device can realize automatic cleaning and discharge of filtered impurities.

Description of drawings

Fig. 1 is the schematic diagram when the present invention starts water intake;

Fig. 2 is the schematic diagram that begins to filter and collect after the water flow of the present invention is accumulated;

Fig. 3 is a schematic diagram of the draining state of the present invention after stopping the water intake;

Fig. 4 is a partial enlarged schematic diagram of the working state of the leakage port of the float valve in Fig. 3;

Fig. 5 is a schematic structural view of a filter element;

In the figure, 1 is a filter and purification device, 2 is an inspection port, 3 is a water inlet, 4 is a drainage cavity, 5 is a filter cavity, 6 is a sewage outlet, 7 is a float valve, 8 is a filter component, 9 is a collection port, 10 is a through hole, 11 is a tail layer filter module, 12 is a middle layer filter module, 13 is a first layer filter module, 14 is a frame, 15 is a filter grid, 16 is a float ball, 17 is a lever, 18 is a ball plug, and 19 is a drain liquid mouth.

Detailed ways

The present invention will be further described below in combination with specific embodiments and accompanying drawings.

Referring to Fig. 1, a rainwater filtration and purification device 1 adopts a double-wall structure, the chamber surrounded by the inner wall is a filter chamber 5, a filter part 8 is arranged in the filter chamber, and a collection port is arranged above the filter part 8 9. The chamber between the inner cavity wall and the outer cavity wall is the drainage cavity 4, and the bottom of the inner cavity wall is provided with a through hole 10, which connects the filter cavity 5 with the drainage cavity 4, and the upper part of the outer cavity wall is provided with a hole connected with the drainage cavity 4. The water inlet 3 and the bottom of the device are provided with a sewage outlet 6 connected with the filter cavity 5 . The area of the water inlet 3 is greater than the area of the sewage outlet 6 . The bottom of the body is provided with a ball float valve 7 for controlling the opening and closing of the sewage outlet 6. The ball float valve 7 includes a ball float 16, a lever 17 and a ball plug 18, and the ball plug 18 is provided with a liquid leakage port 19. Described filtering part 8 comprises frame 14, and frame 14 inside is provided with three layers of filter grid 16, is respectively provided with first layer filter module 13 by rainwater filtering sequence, middle layer filter module 12, tail layer filter module 11, the size of each filter module, The sizes are equal and can be replaced with each other. The filter core body provided in the first filter module 13 is 50 mesh quartz sand, the middle layer 12 is 100 mesh quartz sand, and the tail layer 11 is activated carbon.

As shown in Figure 1-3, the rainwater flows in from the water inlet 1 through the drainage chamber 4, and the impurities remaining after the last filtration are flushed out from the sewage outlet 6. Since the area of the sewage outlet 6 is smaller than the water inlet 1, the rainwater flows in the filter chamber 5 and drainage chamber 4; when the liquid level is accumulated to a certain position, the float valve 7 will close the sewage outlet 6 to further increase the speed of liquid level accumulation; under the action of hydraulic pressure, rainwater enters the top of the filter chamber 5 through the filter part 8 and is filtered The purified rainwater enters the rainwater collection pipeline through the collection port 9;

As shown in Figure 5, when the water inlet 1 stops entering the water, the rainwater accumulated in the device is slowly discharged from the leakage port 19 on the ball plug 18 of the float valve 7; when the liquid level drops to a certain stage, the float valve 7 is opened, The rainwater is discharged from the sewage outlet 6, and the device is reset, and the remaining impurities partially filtered remain at the bottom of the filter cavity 5, and wait for the next water inflow to be flushed with the water flow.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (5)

1. a kind of dmp filter purifier, which is characterized in that described device is double-wall structure, the chamber that internal chamber wall is surrounded For filter chamber, it is provided with filter element in filter chamber, is provided with collection port above filter element, the chamber between internal chamber wall and outer chamber wall Room is drainage lumens, and internal chamber wall bottom is provided with through-hole, and filter chamber and drainage lumens are penetrated through, and outer chamber wall top is provided with and drainage lumens The water inlet of perforation, bottom of device are provided with the sewage draining exit penetrated through with filter chamber, and water inlet area is more than blowdown open area, device Bottom is provided with the valving being opened and closed for control of sewage disposal mouth, and valving is ball-cock assembly, and ball-cock assembly includes floating ball, lever and Bulb stopper is provided with leakage mouth on bulb stopper.

2. a kind of dmp filter purifier as described in claim 1, which is characterized in that the filter element include frame and Filtering module, lower portion are provided with several layers of filter grid, and filtering module is arranged in filter grid, was provided in filtering module Filter body, size, the size of filtering module are equal, from each other alternatively.

3. a kind of dmp filter purifier as claimed in claim 2, which is characterized in that the filtering core be quartz sand, Activated carbon, strainer or filter cloth.

4. a kind of dmp filter purifier as claimed in claim 3, which is characterized in that be provided with three layers of mistake in the frame Filter grid, by dmp filter direction, the filtering core being arranged in first floor filtering module is the quartz sand of 50 mesh, and middle layer is 100 mesh Quartz sand, tail layer are activated carbon.

5. a kind of dmp filter purifier as described in claim 1, which is characterized in that be provided with maintenance at the top of described device Mouthful.