CN211712813U

CN211712813U - Medicine-adding air flotation device

Info

Publication number: CN211712813U
Application number: CN201922262991.1U
Authority: CN
Inventors: 朱建强; 姜琦; 张樱
Original assignee: Wuhan Gelin Huanyuan Purifying Engineering Co ltd
Current assignee: Wuhan Gelin Huanyuan Purifying Engineering Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-10-20
Anticipated expiration: 2029-12-17

Abstract

The utility model provides a medicine air supporting device adds, including centrifugal pump, inlet tube, outlet pipe and intake pipe, the inlet tube passes through the centrifugal pump and communicates each other with the outlet pipe, the intake pipe is installed near the side of centrifugal pump one end to the inlet tube, the intake pipe communicates each other with the inlet tube. The utility model discloses directly produce the bubble in the water pipe, carry out the gas-liquid mixture, do not need extra configuration to dissolve the gas pitcher, dissolve the air pump, practice thrift area, save equipment investment cost.

Description

Medicine-adding air flotation device

Technical Field

The utility model relates to a sewage treatment field especially relates to a medicine air supporting device.

Background

In sewage treatment, an air floatation process is usually used, namely, certain air is introduced into sewage to generate a large amount of fine bubbles in the sewage, and small suspended particles in the sewage adhere to the bubbles and float to the water surface together with the bubbles to form foam scum, so that suspended matters in the water are separated. The water treated by the air flotation process is generally added with a proper amount of flocculating agent to form a network flocculating constituent filled with water, the sedimentation speed of the flocculating constituent is slow, and the specific gravity of the flocculating constituent is smaller than that of the water after a certain amount of air bubbles are adhered, so that the floating speed of the flocculating constituent is much faster than the descending speed of the initial flocculating constituent, and the time for separating impurities from the water by adopting the air flotation process is greatly shortened. Therefore, the air flotation process has application in the fields of water supply, industrial wastewater and municipal sewage treatment.

The common air floatation process adopts two methods of aeration air floatation and dissolved air floatation to generate bubbles, and the aeration air floatation method needs to arrange a micropore diffusion plate or a diffusion pipe at the bottom of an air floatation tank or arrange an impeller at the bottom of the tank; the dissolved air floatation method requires the arrangement of a dissolved air pump, a dissolved air tank and other equipment beside the floatation tank. The prior art sets up aeration pipe or other aeration equipment and need set up extra dissolved air equipment, and equipment investment is high, and area is big to the aeration pipe produces the scheduling problem that blocks up very easily.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a effectual, the saving area's of air supporting medicine air supporting device of air supporting.

The technical scheme of the utility model is realized like this: the utility model provides a medicine air supporting device adds, including centrifugal pump, inlet tube, outlet pipe and intake pipe, the inlet tube passes through the centrifugal pump and communicates each other with the outlet pipe, the intake pipe is installed near the side of centrifugal pump one end to the inlet tube, intake pipe and inlet tube communicate each other.

On the basis of the above technical solution, preferably, the centrifugal pump includes an inducer, and the inducer is coaxially installed on the central shaft of the centrifugal pump impeller and located upstream of the first-stage impeller.

On the basis of the technical scheme, preferably, the dosing air flotation device further comprises a nozzle, the nozzle is located inside the water inlet pipe, one end of the nozzle is communicated with the air inlet pipe, and the opening at the other end of the nozzle faces the centrifugal pump.

Further, preferably, an end of the nozzle remote from the air inlet pipe opens on the axis of the centrifugal pump impeller.

On the basis of the technical scheme, preferably, the dosing air flotation device further comprises an adjusting valve, and the adjusting valve is installed on the air inlet pipe.

On the basis of the above technical scheme, preferably, the chemical feeding air flotation device further comprises a water outlet valve, and the water outlet valve is installed on the water outlet pipe.

On the basis of the technical scheme, preferably, the dosing air floatation device further comprises a first dosing pipe, and the first dosing pipe is installed on the side face of the water inlet pipe and communicated with the water inlet pipe.

On the basis of the technical scheme, preferably, the medicine-adding air flotation device further comprises a second medicine-adding pipe, and the second medicine-adding pipe is installed on the side surface of the water outlet pipe and communicated with the water outlet pipe.

The utility model discloses a add medicine air supporting device has following beneficial effect for prior art:

(1) the device of the utility model generates bubbles in the water inlet pipeline by arranging the air inlet pipe and the centrifugal pump, so that sewage and the bubbles are fully mixed in the pipeline and then enter the air floatation tank, and a dissolved air pump and a dissolved air tank are not required to be equipped, thereby greatly reducing the occupied area and saving the equipment investment cost;

(2) the inducer is arranged on the upstream of the impeller of the centrifugal pump, and the nozzle is arranged at the air inlet pipe, so that bubbles are cut smaller and more uniformly, the air floatation effect is better, the use amount of compressed air can be reduced by more than 30% under the same working condition, and the cavitation phenomenon of the pump can be effectively prevented;

(3) the chemical feeding pipe is arranged on the water pipe, so that sewage and a chemical can be fully mixed in the pipeline, and a flocculating constituent rises to the liquid surface along with bubbles after entering the air floatation tank to realize solid-liquid separation, so that the mixing reaction time is prolonged, the sewage and the chemical are more fully mixed, the impurity removal effect is better, and the chemical feeding amount is reduced;

(4) the device has the advantages of simple structure, convenient operation, high gas dissolving efficiency and low investment cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the chemical-adding air-floating device of the present invention;

fig. 2 is the structure diagram of the inside of the pipeline between the air inlet pipe and the centrifugal pump.

The device comprises a centrifugal pump 1, an inducer 11, an induction wheel 2, a water inlet pipe 3, a water outlet pipe 4, an air inlet pipe 5, a nozzle 6, an adjusting valve 7, a water outlet valve 8, a first dosing pipe 9 and a second dosing pipe 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

As shown in fig. 1, with reference to fig. 2, the utility model discloses a chemical feeding air supporting device, it includes centrifugal pump 1, inlet tube 2, outlet pipe 3, intake pipe 4, nozzle 5, governing valve 6, outlet valve 7, first chemical feeding pipe 8, second chemical feeding pipe 9, inducer 11.

The water inlet of the centrifugal pump 1 is communicated with the water inlet pipe 2, the water outlet of the centrifugal pump 1 is communicated with the water outlet pipe 3, one end of the water inlet pipe 2, which is far away from the centrifugal pump 1, is communicated with the regulating tank, and one end of the water outlet pipe 3, which is far away from the centrifugal pump 1, is communicated with the air flotation tank. The air inlet pipe 4 is arranged on the side surface of one end of the water inlet pipe 2 close to the centrifugal pump 1 and is communicated with the water inlet pipe 2. The sewage passing through the regulating tank enters the water inlet pipe 2, and simultaneously compressed air is introduced into the air inlet pipe 4, and under the action of high-speed rotation of the impeller of the centrifugal pump, the compressed air is instantaneously cut into a large number of micro bubbles and dissolved in the sewage under high pressure, so that the air flotation effect is exerted.

As an alternative embodiment, the inducer 11 is arranged upstream of the first-stage impeller of the centrifugal pump 1, and the inducer 11 is coaxially mounted on the central shaft of the impeller of the centrifugal pump 1. The inducer is arranged at the upper stream of the centrifugal pump impeller, so that the lift generated by the inducer can be utilized to pressurize the centrifugal pump impeller at the back, the suction performance of the centrifugal pump is improved, the cavitation is effectively prevented, and the harmful effect of the cavitation on the flow is reduced to the minimum.

The nozzle 5 is located inside the water inlet pipe 2, one end of the nozzle 5 is communicated with the air inlet pipe 4, and the other end of the nozzle 5 is opened towards the centrifugal pump 1. Compressed air is injected into the inducer and the impeller of the centrifugal pump through the nozzle, so that the inducer blade and the impeller blade of the centrifugal pump can cut the compressed air more effectively. Preferably, the end of the nozzle 5 remote from the inlet pipe 4 opens towards the axis of the impeller of the centrifugal pump 1, so that the cut bubbles are smaller and more uniform.

As an alternative embodiment, a regulating valve 6 is provided in the intake pipe 4 to regulate the intake flow rate of compressed air, thereby controlling an appropriate gas-liquid flow rate ratio.

As an alternative embodiment, a water outlet valve 7 is arranged on the water outlet pipe 3 so as to control the water outlet flow and pressure.

The first chemical feeding pipe 8 can be communicated with the air floatation tank, and the chemicals are directly put into the air floatation tank for coagulation reaction. More preferably, first medicine pipe 8 is installed in inlet tube 2 side and rather than intercommunication each other, adds medicament A from first medicine pipe, and medicament A and sewage mix in the inlet tube, behind the centrifugal pump impeller, are dispersed the mixing fast, and medicament and sewage mix more fully in the pipeline, have saved the medicament and have thrown the dose.

As an optional implementation mode, a second dosing pipe 9 is arranged on the side face of the water outlet pipe 3, and the second dosing pipe 9 is communicated with the water outlet pipe 3. Coagulant is added at the first dosing pipe 8, coagulant aid is added at the second dosing pipe 9, so that coagulation reaction is more thorough, and impurity removal effect is better.

The device has the following operation process: the sewage from the regulating tank enters a water inlet pipe, coagulant added from a first dosing pipe and the sewage are subjected to coagulation reaction in a water inlet pipeline and then enter a centrifugal pump, meanwhile, compressed air enters the water inlet pipeline through a gas inlet pipe, air-water mixed liquid passes through an inducer, the compressed air is instantly chopped into micro bubbles and dissolved in the sewage under high pressure under the action of high-speed rotation of an impeller of the centrifugal pump, pumped water is further subjected to coagulation reaction in a water outlet pipeline and coagulant aid added from a second dosing pipe to form large cyminum floc, the effluent enters an air floatation tank, the pressure is instantly reduced, the compressed air is released from the sewage, nano-scale micro bubbles are formed in the air floatation tank, and after the floc adsorbs the bubbles, the density is reduced and the floc floats to the liquid level of the air floatation tank, so that solid-liquid separation is realized.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a medicine air supporting device, includes centrifugal pump (1), inlet tube (2), outlet pipe (3) and intake pipe (4), its characterized in that: the water inlet pipe (2) is communicated with the water outlet pipe (3) through the centrifugal pump (1), the air inlet pipe (4) is installed on the side edge, close to one end of the centrifugal pump (1), of the water inlet pipe (2), and the air inlet pipe (4) is communicated with the water inlet pipe (2) in a mutual mode.

2. The chemical-adding air flotation device according to claim 1, characterized in that: the centrifugal pump (1) comprises an inducer (11), wherein the inducer (11) is coaxially arranged on the central shaft of the impeller of the centrifugal pump (1) and is positioned at the upstream of the first-stage impeller.

3. The chemical-adding air flotation device according to claim 1, characterized in that: still include nozzle (5), nozzle (5) are located inlet tube (2) inside, nozzle (5) one end and intake pipe (4) intercommunication each other, nozzle (5) other end opening orientation centrifugal pump (1).

4. The chemical-adding air flotation device according to claim 3, characterized in that: and one end of the nozzle (5) far away from the air inlet pipe (4) is opened to face the axis of the impeller of the centrifugal pump (1).

5. The chemical-adding air flotation device according to claim 1, characterized in that: still include governing valve (6), governing valve (6) are installed on intake pipe (4).

6. The chemical-adding air flotation device according to claim 1, characterized in that: the water outlet device also comprises a water outlet valve (7), wherein the water outlet valve (7) is arranged on the water outlet pipe (3).

7. The chemical-adding air flotation device according to claim 1, characterized in that: still include first dosing pipe (8), first dosing pipe (8) are installed in inlet tube (2) side and are communicate each other with it.

8. The chemical-adding air flotation device according to claim 1, characterized in that: the device is characterized by further comprising a second dosing pipe (9), wherein the second dosing pipe (9) is installed on the side face of the water outlet pipe (3) and communicated with the water outlet pipe.