CN204737776U - Natural ventilation equipment and have this natural ventilation equipment's biological filter - Google Patents

Abstract

The utility model provides a natural ventilation equipment, its characterized in that includes wind -collecting cover, gas distribution house steward, guide duct and one -way admission valve, the wind -collecting cover has air inlet port and air -out port, and aforementioned air inlet port bore to air -out port bore progressively reduces, the gas distribution house steward has a plurality of branch air distribution pipe, has seted up a plurality of gas distribution holes on the aforesaid branch air distribution pipe, vertical setting of guide duct and upper end are connected with the air -out port of aforementioned wind -collecting cover, and the lower extreme meets with gas distribution house steward's air inlet, one -way admission valve is arranged near the air -out port in locating aforementioned wind -collecting cover. The utility model also discloses a biological filter. Compared with the prior art, the utility model has the advantages of: utilize natural air to flow for the biological filter auxiliary air, remedy the not enough of present plus power aeration, be favorable to energy -concerving and environment -protectively, do not lead to the fact the pollution to the environment, and the cost drops into and the plant maintenance in the aspect of cost greatly reduced.

Description

Natural ventilation device and biological filter with the same

technical field

The utility model relates to a ventilation device, and also relates to a biological filter, which belongs to the technical field of sewage treatment.

Background technique

With the sharp increase in industrial and agricultural production and residential water consumption, as well as the generation and discharge of various sewage, problems such as water resource shortage and water environmental pollution have become increasingly prominent. The issue of sewage treatment is also getting more and more attention.

There are various processes for sewage treatment. The biofilter sewage treatment process is one of various purification processes such as comprehensive filtration, adsorption and biological action. It has the advantages of large volume load and hydraulic load, short hydraulic retention time, low infrastructure investment, and good effluent quality. A certain amount of filter material with a small particle size is filled in the filter, and biofilm grows on the surface of the filter material. Through the aerobic and anaerobic effects of microorganisms, nitrification and denitrification can be realized simultaneously, and nitrogen removal can be achieved while removing organic matter. Purpose. It has a good effect of removing SS, COD, BOD, N, and P.

In order to ensure the normal growth and reproduction of microorganisms, currently used biofilters usually use external power aeration to ensure sufficient oxygen for the growth and reproduction of microorganisms, and at the same time promote the replacement of biofilms to ensure the performance of biofilms. Related documents can refer to the Chinese invention patent application publication "multimedia rapid percolation sewage treatment device and method thereof" (publication number CN101456620A) whose application number is 200910076029.7, and the Chinese invention patent "V Biological Nitrogen and Phosphorus Removal Process and Supporting Devices for Sewage Biological Aerated Filter" (authorized announcement number is CN101734829B).

The air intake pipes mentioned in the above literature are generally driven by an air pump to obtain a continuous flow of air, but this kind of external power aeration consumes energy on the one hand, and on the other hand increases the complexity of the equipment and its operation, management and maintenance.

Utility model content

The technical problem to be solved by the utility model is to provide an energy-saving and environment-friendly natural ventilation device in view of the above-mentioned technical status, especially suitable for non-submerged biological filter tanks.

Another technical problem to be solved by the utility model is to provide an energy-saving and environment-friendly biological filter in view of the above-mentioned technical status quo.

Another technical problem to be solved by the utility model is to provide a biological filter with low operation and maintenance costs in view of the above-mentioned technical status quo.

The technical solution adopted by the utility model to solve the above technical problems is: a natural ventilation device, which is characterized in that it includes

The air collecting hood has an air inlet port and an air outlet port, and the diameter of the aforementioned air inlet port is gradually reduced to the diameter of the air outlet port;

The air distribution main pipe has a plurality of air distribution branch pipes, and the aforementioned air distribution branch pipes are provided with a plurality of air distribution holes;

The air guide pipe is arranged vertically and the upper end is connected to the air outlet port of the aforementioned air collecting hood, and the lower end is connected to the air inlet of the air distribution main pipe; and

The one-way air intake valve is located in the aforementioned air collecting hood and arranged near the air outlet port.

There are multiple air collecting hoods arranged around the upper end of the air guide pipe, correspondingly, each air collecting hood is provided with a one-way air intake valve. The air collecting hood faces in different directions to adapt to the change of wind direction, so that the whole system can use the air flow in different directions to improve the efficiency of the ventilation system and maintain its relatively stable operating state.

Further, a one-way air intake valve is also provided at the connection between the air guiding pipe and the main air distribution pipe.

In order to reduce wind resistance, the wind collecting hood is trumpet-shaped and has a smooth outward expansion curve.

A biological filter, including a filter and a biological filler arranged in the filter, is characterized in that a natural ventilation device is also provided in the filter, and the natural ventilation device includes

The air collecting hood has an air inlet port and an air outlet port, and the diameter of the aforementioned air inlet port is gradually reduced to the diameter of the air outlet port;

The air distribution main pipe is arranged in the aforementioned biological filler and has multiple air distribution branch pipes, and the aforementioned air distribution branch pipes are provided with a plurality of air distribution holes;

The air duct is arranged vertically and the upper end is connected to the air outlet port of the aforementioned air collecting hood, and the lower end is placed in the aforementioned biological filler and connected to the air inlet of the air distribution main pipe; and

The one-way air intake valve is located in the aforementioned air collecting hood and arranged near the air outlet port.

Further, both the air collecting hood and the air guide pipe are buried in the biological filler, and the air inlet end of the air collecting hood is opened on the side wall of the filter tank. This design integrates the air collecting hood and the filter tank into one body, making the structure more compact and helping to reduce the installation height.

Compared with the prior art, the utility model has the advantages of: using the natural air flow to supplement the air for the biological filter, making up for the deficiency of the existing external power aeration, which is beneficial to energy saving and environmental protection, does not cause pollution to the environment, and costs less And the cost of equipment maintenance is greatly reduced, because no electricity is needed during use, which makes its installation and use more adaptable; the overall component assembly is convenient, and maintenance and replacement are also more convenient.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the embodiment.

Fig. 2 is a partial top view of the embodiment.

Figure 3 is a combination diagram of the air distribution main pipe and the air distribution branch pipe.

Fig. 4 is a schematic structural diagram of embodiment 2.

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

Embodiment 1, as shown in Figure 1, Figure 2 and Figure 3, the biofilter in this embodiment is usually built under the ground, including a filter 1, a biological filler 2 arranged in the filter 1 and a biofilter arranged in the filter 1 natural ventilation. The filter tank 1 has a water outlet 11 and a water distribution pipe 12 is arranged inside, and the biological filler 2 can be made of various materials arranged in layers.

The natural ventilation device includes an air collecting hood 3, an air distribution main pipe 5 and an air guide pipe 4. The air collecting hood 3 is exposed to the filter tank 1. The air collecting hood 3 is trumpet-shaped and has a smooth outward expansion curve. The air collecting hood 3 has an advanced The diameter of the air inlet port and the air outlet port gradually decreases from the air inlet port to the air outlet port; according to the fluid mechanics characteristics, the air velocity at the large section is small and the pressure is high; the air velocity at the small section is large and the pressure is low. The pressure difference and the inertia work together to make the air flow into the air duct 4 smoothly from the air inlet port.

The air distribution main pipe 5 is arranged in the biological filler 2 and has a plurality of air distribution branch pipes 6, and a plurality of air distribution holes are opened on the air distribution branch pipes 6; the incoming air finally flows out through the air distribution holes on the air distribution branch pipe 6 and enters the biofilter , to achieve the effect of aeration and oxygenation.

The air guide pipe 4 is arranged longitudinally and the upper end is connected with the air outlet port of the air collecting hood 3, and the lower end is placed in the biological filler 2 and connected with the air inlet of the air distribution main pipe 5; the one-way air intake valve 31 is arranged in the air collecting hood 3 and arranged near the air outlet.

The one-way air intake valve 31 is set in the air collecting hood 3 and is arranged close to the air outlet port. , the one-way intake valve 31 is turned on to allow air to flow in; otherwise, the one-way intake valve 31 is closed to prevent the air from flowing out in reverse.

Considering the uncertainty of the wind direction, there are multiple air collecting hoods 3 arranged around the upper end of the air guide pipe 4 in this embodiment. Correspondingly, each air collecting hood 3 is provided with a one-way air intake valve 31 . The wind collecting hood 3 is oriented in different directions to adapt to the change of wind direction, so that the whole system can utilize air flows in different directions, improve the efficiency of the ventilation system, and maintain a relatively stable operating state.

A one-way air intake valve 51 is also provided at the junction of the air guide pipe 4 and the air distribution main pipe 5 to ensure that the air does not flow backwards.

This embodiment combines air flow characteristics and system structure design, and uses natural air flow to aerate and oxygenate the biological filter, which greatly improves the shortcomings of the commonly used external power aeration in terms of energy consumption, operation, management and maintenance.

Beneficial effects are reflected in: low construction price: the natural ventilation system of the biological filter has a simple structure, the materials used are common and easy to obtain, and the cost of infrastructure construction is low; energy saving and environmental protection: no external power is needed during the operation, energy consumption is saved, and the environment is not polluted; Strong adaptability: because no electricity is needed during use, it is more adaptable to installation and use; easy to disassemble: the natural ventilation system of the biological filter is connected by various independent parts, when the material is aging, external force damage and other reasons Easy to disassemble and assemble when maintenance and replacement are required

Embodiment 2, as shown in Figure 4, the biofilter in this embodiment is usually built on the ground, wherein, the wind collecting hood 3 and the air guide pipe 4 are buried in the biological filler 2, and the wind collecting hood 3 The air inlet end is provided on the side wall of the filter tank 1. This design connects the wind collecting cover 3 and the filter tank 1 into one body, and the structure is more compact, which is beneficial to reduce the installation height. Refer to Example 1 for other structures.

Claims (9)

1. A natural ventilation device, characterized in that it comprises The air collecting hood has an air inlet port and an air outlet port, and the diameter of the aforementioned air inlet port is gradually reduced to the diameter of the air outlet port; The air distribution main pipe has a plurality of air distribution branch pipes, and the aforementioned air distribution branch pipes are provided with a plurality of air distribution holes; The air guide pipe is arranged vertically and the upper end is connected to the air outlet port of the aforementioned air collecting hood, and the lower end is connected to the air inlet of the air distribution main pipe; and The one-way air intake valve is located in the aforementioned air collecting hood and arranged near the air outlet port. 2. The natural ventilation device according to claim 1, characterized in that there are multiple air collecting hoods arranged around the upper end of the air guide pipe, correspondingly, each air collecting hood is provided with a one-way air intake valve. 3. The natural ventilation device according to claim 2, characterized in that a one-way air intake valve is also provided at the junction of the air guiding pipe and the air distribution main pipe. 4. The natural ventilation device according to claim 1 or 2, characterized in that the wind collecting hood is trumpet-shaped and has a smooth outward expansion curve. 5. A biological filter, comprising a filter and a biological filler arranged in the filter, characterized in that a natural ventilation device is also provided in the filter tank, and the natural ventilation device includes The air collecting hood has an air inlet port and an air outlet port, and the diameter of the aforementioned air inlet port is gradually reduced to the diameter of the air outlet port; The air distribution main pipe is arranged in the aforementioned biological filler and has multiple air distribution branch pipes, and the aforementioned air distribution branch pipes are provided with a plurality of air distribution holes; The air duct is arranged vertically and the upper end is connected to the air outlet port of the aforementioned air collecting hood, and the lower end is placed in the aforementioned biological filler and connected to the air inlet of the air distribution main pipe; and The one-way air intake valve is located in the aforementioned air collecting hood and arranged near the air outlet port. 6. The biological filter according to claim 5, characterized in that the air collecting hood and the air guide pipe are buried in the biological filler, and the air inlet end of the air collecting hood is opened to meet the side wall of the filter tank. superior. 7. The biological filter according to claim 5 or 6, characterized in that there are multiple air collecting hoods arranged around the upper end of the air duct, and correspondingly, each air collecting hood is provided with a one-way Intake valve. 8. The biofilter according to claim 7, characterized in that a one-way air intake valve is also provided at the junction of the air guide pipe and the air distribution main pipe. 9. The biological filter according to claim 5, characterized in that the wind collecting hood is trumpet-shaped and has a smooth outward expansion curve.