CN203144220U - Gravity type hydraulic aeration fine filter - Google Patents

Abstract

The utility model discloses a gravity type hydraulic aeration fine filter machine, which comprises an aeration dissolved oxygen box and four fine filter tanks arranged around the lower end of the aeration dissolved oxygen box. Water distribution tank, aeration and dissolved oxygen chamber and aeration tank. The lower end of the aeration tank is separated from the water inlet distribution tank and aeration and dissolved oxygen chamber by the aeration bar. A gas-liquid separation pipe is provided at the lower end of the gas-liquid separation pipe, and a gas-liquid confluence pipe is provided at the upper end of the gas-liquid separation pipe to connect with the aeration and dissolved oxygen chamber. The fine filter tank is divided into a clean water tank, a filter chamber and a water collection chamber from top to bottom. The top of the chamber is provided with a siphon pipe, the upper side of the gas-liquid separation pipe is connected with the siphon pipe through a connecting pipe, the filter chamber is provided with a fine filter layer, the water collection chamber and the clean water tank are connected through a recoil pipe, and the upper end side of the water collection chamber is provided There is a water outlet. The utility model has the beneficial effects of simple structure, automatic backwashing function and low maintenance cost.

Description

Gravity hydraulic aeration fine filter

technical field

The utility model relates to equipment for treating rivers, lakes, swimming pools and other water bodies, in particular to a gravity type hydraulic aeration fine filter.

Background technique

At present, in swimming pools, landscape rivers and lakes, freshwater farms, seawater desalination, industrial circulating water and recreational water sites, there are usually two ways to treat sewage: 1. Discharge all the sewage and then fill it with clean water. Water; 2. Use filtering equipment to filter out impurities and harmful substances in the sewage, and reuse them through the circulation disinfection system. In the first method, water needs to be changed regularly, which consumes manpower and material resources, and the cost is very high. In today's world of water shortage, it is obviously a huge waste to adopt the first method. Therefore, most of them now use the second method. However, there are many kinds of sewage filtration equipment in the market, but this kind of sewage treatment equipment has complex structure, high cost, and large power consumption. Although it will not waste water resources, the cost of sewage treatment is very high, and the filtration equipment needs to be cleaned regularly. , very troublesome, difficult to popularize and promote the use of.

For example, the Chinese patent authorization announcement number: CN2589042Y, the date of the authorization announcement was December 3, 2003, which disclosed a sewage treatment equipment, including a sewage collection tank, a pump, a filter cartridge, a clean water tank, a clean water tower and a computer control box. When filtering, the pump will input the sewage into the sewage collection tank, and then the pump will input the sewage in the sewage collection tank into the filter cartridge to filter impurities, and the filtered clean water will flow into the clean water tank through the outlet pipe under the filter cartridge, and the clean water in the clean water tank The pump is input into the clean water tower. When backwashing, the pump sends the clean water in the clear water tank into the filter cartridge through the water inlet pipe at the bottom of the filter cartridge, and the accumulation in the filter cartridge is sent into the sedimentation tower through the sludge discharge pipe. The accumulated material is then pumped into the exposure tank, and the computer control box fully and automatically controls the entire equipment. This kind of sewage treatment equipment can effectively treat sewage. The disadvantage is that the structure of this kind of sewage treatment equipment is complex. The transportation and flow of sewage are driven by pumps, which consume a lot of power. high.

Utility model content

In order to overcome the problems of complex structure, high power consumption, regular cleaning and replacement of filter mechanism and high maintenance cost in the existing sewage treatment equipment, the utility model provides a simple structure, automatic backwashing function, easy to use and maintain. Low-cost gravity hydraulic aeration fine filter.

In order to achieve the above object, the utility model adopts the following technical solutions:

A gravity-type hydraulic aeration fine filter, comprising an aeration dissolved oxygen box and four fine filter tanks arranged around the lower end of the aeration dissolved oxygen box, the aeration dissolved oxygen box is provided with a water distribution tank , an aeration dissolved oxygen chamber and an aeration tank, the upper end of the aeration tank is connected to the atmosphere, the lower end of the aeration tank is separated from the water inlet distribution tank and the aeration and dissolved oxygen chamber by an aeration bar, the water inlet distribution The side of the box is connected with a water inlet pipe, and the lower end of the aeration and dissolved oxygen chamber is provided with a gas-liquid separation pipe, and the gas-liquid confluence pipe with the upper end connected with the aeration and dissolved oxygen chamber is arranged inside the gas-liquid separation pipe. The inside of the fine filter tank is respectively a clean water tank, a filter chamber and a water collection chamber from top to bottom. The top of the filter chamber is provided with a siphon pipe, and the upper side of the gas-liquid separation pipe communicates with the siphon pipe through a connecting pipe. The filter chamber is provided with a fine filter layer, the water collection chamber is communicated with the fresh water tank through a recoil pipe, and the upper side of the water collection chamber is provided with a water outlet pipe. Sewage enters the water distribution tank from the water inlet pipe, and then enters the aeration tank through the aeration bar. The sewage is in contact with the outside air, and harmful gases such as carbon dioxide, ammonia, and nitrogen in the sewage escape from the water, and at the same time, the pollutants in the air Oxygen dissolves into the water to form dissolved oxygen. Nitrogen, phosphorus, dissolved protein and other organic matter in the sewage are oxidized by oxygen to form foam. The sewage mixed with foam enters the gas-liquid separation pipe through the gas-liquid confluence cylinder. The foam floats on the water surface and then flows from the connecting pipe. The solid particles in the foam and sewage are blocked by the fine filter layer. The filtered water enters the water collection chamber and fills the clean water tank through the recoil pipe. When the clean water in the clean water tank is full, it is discharged from the outlet pipe. With the accumulation of solid impurities and oxidized foam on the top of the fine filter layer, the water flow resistance of the fine filter layer gradually increases, so that the water in the connecting pipe enters the filter chamber and the water level rises to full As the water level in the siphon rises, a siphon phenomenon is formed, so that the treated clean water counterflows and backwashes the filter medium. With the discharge of impurities in the fine filter layer, the water level in the clean water tank decreases, and the siphon effect is destroyed. Automatically reset and restart to filter sewage. The whole process is formed automatically without manual control. Therefore, this gravity-type hydraulic aeration fine filter has a simple structure and automatic backwashing function, so that the cost of effective use and maintenance is reduced. The processing cost is low and the application range is very wide.

Preferably, a precision filter plate is provided on the lower side of the fine filter layer. After the sewage is filtered through the fine filter layer, it is then filtered through the fine filter plate for the second time to prevent the fine filter layer from being penetrated by impurities, and the impurities will directly enter the water collection chamber and clean water tank to ensure a good sewage treatment effect.

Preferably, the siphon pipe is U-shaped as a whole, including a siphon rising pipe, a siphon transition pipe and a siphon descending pipe, one end of the siphon transition pipe communicates with the upper end of the siphon descending pipe, and the other end communicates with the upper end of the siphon rising pipe , The lower end of the siphon downpipe is connected with a sewage pipe. When the siphon phenomenon occurs, the clean water flows backwards, and the water and impurities at the top of the filter chamber rise along the siphon ascending pipe, pass through the siphon transition pipe and enter the siphon descending pipe, and the water in the siphon descending pipe flows downward under the action of gravity, thus filtering The air at the top of the chamber is pumped out to form a negative pressure, so as to ensure that the impurities in the fine filter layer enter the siphon with the water flow and are finally discharged from the sewage pipe, so as to realize the backwashing of the filter sand.

Preferably, both the aeration dissolved oxygen box and the fine filter tank are made of UPVC material. Products made of UPVC materials have many advantages such as corrosion resistance, small fluid resistance, high mechanical strength, sanitation and non-toxicity, light texture, convenient installation, good sealing performance, etc. The filter tanks all have the above characteristics, so this kind of gravity hydraulic aeration fine filter is easy to install, has good sealing performance and long service life.

Therefore, the utility model has the beneficial effects of simple structure, automatic backwashing function, and low maintenance cost.

At the same time, the utility model also has the beneficial effects of convenient installation, corrosion resistance, no rust, good sealing performance and long service life.

Description of drawings

Fig. 1 is a schematic structural diagram of the sewage treatment state of the utility model.

Fig. 2 is a structural schematic diagram of the backwashing state of the utility model.

In the figure: aeration dissolved oxygen tank 1 water inlet distribution tank 11 aeration dissolved oxygen chamber 12 aeration tank 13 aeration bar 14 fine filter tank 2 clean water tank 21 filter chamber 22 water collection chamber 23 recoil pipe 24 water inlet pipe 3 gas Liquid separation pipe 4 Gas-liquid confluence pipe 41 Siphon pipe 5 Siphon ascending pipe 51 Siphon transition pipe 52 Siphon descending pipe 53 Connecting pipe 6 Fine filter layer 7 Precision filter plate 71 Outlet pipe 8 Sewage pipe 9

Detailed ways

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

A kind of gravity type hydraulic aeration fine filter machine as shown in Figure 1, comprises an aeration dissolved oxygen box 1 and is located at four fine filter tanks 2 around the lower end of the aeration dissolved oxygen box, in the aeration dissolved oxygen box 1 There are water distribution tank 11, aeration dissolved oxygen chamber 12 and aeration tank 13, the upper end of the aeration tank 13 is connected with the atmosphere, and the lower end of the aeration tank 13 is connected with the water intake distribution tank 11, aeration dissolving tank 13 through the aeration bar 14. The oxygen chamber 12 is separated, and the water inlet pipe 3 is connected to the side of the water inlet distribution tank 11. The sewage enters the water inlet distribution tank 11 from the water inlet pipe 3, and the sewage in the water inlet distribution tank 11 passes upward through the aeration bar 14 and enters the aeration The tank 13 is in full contact with the air, and the aeration strip 14 can fully subdivide the water, thereby increasing the contact surface between the sewage and the air, facilitating the discharge of toxic gases such as carbon dioxide and ammonia nitrogen in the sewage, and at the same time facilitating the dissolution of oxygen in the air into the air. In the water; the lower end of the aeration and dissolved oxygen chamber 12 is provided with a gas-liquid separation pipe 4, and the gas-liquid separation pipe 4 is provided with a gas-liquid confluence pipe 41 whose upper end communicates with the aeration and dissolved oxygen chamber 12. The bottom is clean water tank 21, filter chamber 22 and water collection chamber 23 respectively, and the top of filter chamber 22 is provided with siphon pipe 5, and the upper end side of gas-liquid separation pipe 4 communicates with siphon pipe 5 through connection pipe 6, and the inside of described filter chamber 22 A fine filter layer 7 is provided, and the fine filter layer is composed of multi-layer filter media. The lower side of the fine filter layer 7 is provided with a fine filter plate 71, and the water collection chamber 23 and the clean water tank 21 are connected through the recoil pipe 24, and the water collection The upper side of the chamber 23 is provided with an outlet pipe 8. After oxygen dissolves into the sewage, the gas-liquid confluence pipe 41 oxidizes with organic matter such as nitrogen, phosphorus, and dissolved protein in the sewage, and produces a lot of foam, which passes through the gas-liquid separation pipe 4. Finally, it is separated from the sewage and floats on the sewage. The sewage and foam enter the filter chamber through the connecting pipe 6. The foam and various impurities in the sewage accumulate on the upper side of the fine filter layer 7 under the filtration of the fine filter layer. The fresh water filtered by the layer 7 and the precision filter plate 71 is accumulated in the water collection chamber 23, and with the accumulation of clean water in the water collection chamber, the clean water finally enters the clean water tank 21 through the recoil pipe 24, and then is discharged through the outlet pipe 8 Clean water, so as to realize the treatment of sewage.

As shown in Figure 2, the siphon tube 5 is U-shaped as a whole, including a siphon riser 51, a siphon transition tube 52 and a siphon drop tube 53, one end of the siphon transition tube 52 communicates with the upper end of the siphon drop tube 53, and the other end communicates with the siphon riser The upper end of 51 is connected, and the lower end of siphon descending pipe 53 is connected with sewage pipe 9. As solid impurities and foam formed after oxidation accumulate on the top of fine filter layer 7, the resistance of fine filter layer to water flow is gradually increased, so that the connecting pipe The water in 6 enters the filter chamber and the water level rises to fill the siphon riser pipe 51, the siphon transition pipe 52 and finally flows into the siphon descender pipe 53, and the water in the siphon descender pipe 53 flows downward under the action of gravity, thereby turning the top of the filter chamber 22 The air is pumped out to form a negative pressure, resulting in a siphon phenomenon, and the clean water in the water collection chamber 23 flows upwards, as shown by the arrow in the figure, the clean water continuously washes away the impurities in the fine filter layer, so that the impurities in the fine filter layer follow the water flow. Enter the siphon pipe and finally discharge from the sewage pipe, so as to realize the backwash of the filter sand. With the discharge of impurities in the fine filter layer, the water level in the clean water tank will drop, the siphon effect will be destroyed, the filter material will automatically reset, and the sewage will be filtered again. , the whole process is formed automatically without manual control. Therefore, the utility model has the beneficial effects of simple structure, automatic backwashing function, and low maintenance cost. In this embodiment, both the aeration dissolved oxygen box 1 and the fine filter tank 2 are made of UPVC material. The aeration fine filter also has the beneficial effects of convenient installation, good sealing performance and long service life.

The above-mentioned embodiments only express the specific implementation manners of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims (4)

1. A gravity-type hydraulic aeration fine filter, comprising an aeration dissolved oxygen box (1) and four fine filter tanks (2) arranged around the lower end of the aeration dissolved oxygen box, characterized in that the The aeration and dissolved oxygen box (1) is equipped with a water inlet distribution tank (11), an aeration and dissolved oxygen chamber (12) and an aeration tank (13). The upper end of the aeration tank (13) is connected to the atmosphere. The lower end of the aeration tank (13) is separated from the water inlet distribution tank (11) and the aeration dissolved oxygen chamber (12) by the aeration bar (14), and the side of the water inlet distribution tank (11) is connected with a water inlet pipe ( 3), the lower end of the aeration and dissolved oxygen chamber (12) is provided with a gas-liquid separation pipe (4), and the upper end of the gas-liquid separation pipe (4) is provided to communicate with the aeration and dissolved oxygen chamber (12) The gas-liquid confluence pipe (41), the fine filter tank (2) from top to bottom are the clean water tank (21), the filter chamber (22) and the water collection chamber (23), the filter chamber ( The top of 22) is provided with a siphon tube (5), the upper side of the gas-liquid separation tube (4) communicates with the siphon tube (5) through the connecting tube (6), and the filter chamber (22) is equipped with a fine filter layer (7), the water collection chamber (23) communicates with the clean water tank (21) through a recoil pipe (24), and the upper end side of the water collection chamber (23) is provided with a water outlet pipe (8) . 2. The gravity type hydraulic aeration fine filter according to claim 1, characterized in that a fine filter plate (71) is provided on the lower side of the fine filter layer (7). 3. The gravity type hydraulic aeration fine filter according to claim 1, characterized in that, the siphon pipe (5) is U-shaped as a whole, including a siphon rising pipe (51), a siphon transition pipe (52) and a siphon The descending pipe (53), one end of the siphon transition pipe (52) communicates with the upper end of the siphon descending pipe (53), and the other end communicates with the upper end of the siphon ascending pipe (51), and the siphon descending pipe (53) The lower end is connected with a blowdown pipe (9). 4. The gravity hydraulic aeration fine filter according to claim 1, 2 or 3, characterized in that both the aeration dissolved oxygen box (1) and the fine filter tank (2) are made of UPVC material.

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