CN218931776U - Volute integrated efficient air flotation device - Google Patents

Abstract

The utility model discloses a volute integrated high-efficiency air flotation device, which comprises a body, wherein a stirring room, an air flotation tank, a flotation room and a water outlet room are sequentially arranged on the body; a water inlet is formed in one side of the stirring room, a stirrer is arranged in the stirring room, and a lower shaft seat is arranged on one side of a stirring shaft of the stirrer; a volute air flotation machine and an impeller are arranged in the air flotation box; a slag scraping machine is arranged in the flotation chamber, a speed reducer is arranged on one side of the slag scraping machine, and a sludge collecting hopper and a sludge discharge port are arranged at the bottom of the flotation chamber; a water outlet is arranged between the water outlets. The utility model has small occupied space, strong integrity, low energy consumption, no secondary pollution, high efficiency, oil removal rate of 70-80 percent (for example, dissolved oil and emulsified oil can be treated by adding drugs) and suspended matter removal rate of 60-80 percent; COD removal rate can reach 50%.

Description

Volute integrated efficient air flotation device

Technical Field

The utility model relates to the technical field of air floatation devices, in particular to a volute integrated efficient air floatation device.

Background

Air floatation is to introduce air into water to generate fine bubbles, and coagulant or floatation agent is added to raise air floatation effect, so that fine suspended matters in water adhere to air bubbles and float to water surface together with the air bubbles to form scum, thus recovering suspended matters in water and improving water quality. The diameter size of the generated bubbles and the dispersion degree of the bubbles in water are important factors influencing the air floatation effect; the smaller the bubble diameter, the better the adhesion effect (below 50 μm) of the particles, and the bubbles larger than 100 μm hardly play a role in air floatation. The method is classified according to the method for generating bubbles, and three types of pressurized dissolved air flotation, jet flow flotation and impeller flotation are conventional. The impeller air floatation is to form negative pressure in a certain space by the high-speed rotation of the impeller, and suck air from an air pipe. The air and the circulating water flow entering the water are fully mixed by the impeller to become tiny bubbles, the tiny bubbles are thrown out of the guide blades, smile bubbles are generated after high-speed rotary cutting, the bubbles vertically rise to carry out air floatation, and the scum is formed to continuously and slowly rotate and is scraped into the slag collecting groove by the scum scraper.

Disadvantages of conventional cochlear air flotation devices are: the diameter of the bubbles is large (1 mm), the efficiency is inferior to the pressurized dissolved air flotation effect, the dissolved air efficiency is about 80%, and the volume of the flotation cell body is large.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the spiral concave integrated high-efficiency air flotation device, which has the advantages of small occupied space, strong integrity, low energy consumption, no secondary pollution, high efficiency, oil removal rate of 70-80 percent (such as adding medicine to the dissolved oil and the emulsified oil) and suspended matter removal rate of 60-80 percent; COD removal rate can reach 50%.

In order to solve the technical problems, the utility model provides a volute integrated high-efficiency air floatation device, which comprises a body, wherein a stirring room, an air floatation box, a floatation room and a water outlet room are sequentially arranged on the body; a water inlet is formed in one side of the stirring room, a stirrer is arranged in the stirring room, and a lower shaft seat is arranged on one side of a stirring shaft of the stirrer; a volute air flotation machine and an impeller are arranged in the air flotation box; a slag scraping machine is arranged in the flotation chamber, a speed reducer is arranged on one side of the slag scraping machine, and a sludge collecting hopper and a sludge discharge port are arranged at the bottom of the flotation chamber; a water outlet is arranged between the water outlets.

Further, a bracket is arranged at the bottom of the body.

Further, a cover plate is movably arranged at the top of the floatation chamber, and an observation port is formed in the cover plate.

Further, the body top is provided with deodorization collecting conduit.

Further, the volute air floatation machine comprises a motor, a fixing seat, a rotating shaft, a shell and a water-air mixed explosion head, wherein the fixing seat is arranged on the body and used for fixing the motor, and the rotating shaft is connected to an output shaft of the motor.

Further, an effluent weir is arranged between the effluent room and the floatation room.

Further, guardrails are arranged on two sides of the body.

Further, the main part of the inner side of the body adopts a carbon steel or stainless steel structure.

Further, reinforcing ribs are arranged on the inner side and the outer side of the body.

The utility model has the beneficial effects that: the integrated structure is adopted, a stirrer, a water outlet weir, a slag scraping machine, a spiral concave air flotation machine, a sludge discharge device (a sludge collecting hopper and a sludge discharge port) and a deodorizing and sealing device (a deodorizing and collecting pipeline) are arranged in a stirring room, an air flotation tank, a floatation room and a water outlet room, sewage firstly enters the stirring room, is respectively added with a coagulant and a flocculant, and enters the air flotation tank after two-stage coagulation and flocculation stirring, and microbubbles generated by the spiral concave air flotation machine are fully mixed. The flocs are attached to the small bubbles and vertically rise to the liquid level, and the scum is formed to continuously and slowly rotate and is scraped into the mud discharging device at the bottom.

The device is provided with a water outlet weir for adjusting the liquid level height, and the liquid level height in the pool can be adjusted according to the water inflow; the bottom of the tank is provided with a sludge collecting hopper, and a valve can be opened periodically to discharge sludge; the deodorizing collecting pipeline is arranged on the device, and the released gas can be discharged by the deodorizing collecting pipeline, so that secondary pollution is avoided; the operation mode of the slag scraping machine can be automatically or manually controlled.

Drawings

Fig. 1 is a schematic view of the overall structure of the present utility model.

Fig. 2 is a schematic diagram of a spiral air flotation machine according to the present utility model.

Fig. 3 is a schematic view of the impeller structure of the present utility model.

The reference numerals in the figures illustrate: 1. a body; 2. stirring room; 3. an air flotation tank; 4. a flotation cell; 5. a water outlet room; 6. a water inlet; 7. a stirrer; 8. a lower shaft seat; 9. a volute air floatation machine; 91. a motor; 92. a fixing seat; 93. a rotation shaft; 94. a housing; 95. a water-gas mixing explosion head; 10. an impeller; 11. a slag scraping machine; 12. a speed reducer; 13. a mud collecting hopper; 14. a mud discharging port; 15. a water outlet; 16. a bracket; 17. a cover plate; 18. an observation port; 19. a deodorizing collection pipe; 20. a water outlet weir; 21. guard bars; 22. reinforcing ribs.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 3, an embodiment of a volute integrated efficient air floatation device of the utility model comprises a body 1, wherein a stirring room 2, an air floatation tank 3, a floatation room 4 and a water outlet room 5 are sequentially arranged on the body 1; a water inlet 6 is formed in one side of the stirring room 2, a stirrer 7 is arranged in the stirring room 2, and a lower shaft seat 8 is arranged on one side of a stirring shaft of the stirrer 7; a volute air floatation machine 9 and an impeller 10 are arranged in the air floatation tank 3; a slag scraping machine 11 is arranged in the flotation cell 4, a speed reducer 12 is arranged on one side of the slag scraping machine 11, and a sludge collecting hopper 13 and a sludge discharge port 14 are arranged at the bottom of the flotation cell 4; the water outlet room 5 is provided with a water outlet 15.

The bottom of the body 1 is provided with a bracket 16 for protecting the whole device and the ground; the guardrails 21 are arranged on two sides of the body 1, so that the repair of personnel is facilitated;

the volute air floatation machine 9 comprises a motor 91, a fixed seat 92, a rotating shaft 93, a shell 94 and a water-air mixing explosion head 95, wherein the fixed seat 92 is arranged on the body 1 and used for fixing the motor 91, the rotating shaft 93 is connected to an output shaft of the motor 91, pretreated sewage flows into an inflating section of the volute air floatation machine, the sewage is fully mixed with microbubbles generated by the volute air floatation machine through the inflating section in the rising process, and the volute air floatation machine transfers air on the water surface to the water through a shell body. The working principle of the Wobble concave mixed air floatation machine is that a vacuum area is formed in water by utilizing the high-speed rotation of the air dispersing impeller 10 at the bottom of the shell, and air on the liquid level is input into the water through the aerator to fill the vacuum; meanwhile, the concave mixed dissolved air flotation machine sucks sewage from a water inlet valve at the bottom, the sewage is centrifugally thrown out in the form of tiny particles through rotary cutting by rotating an impeller 10 at a high speed, air is mixed with the sewage flowing into the air flotation machine shell through a jet flow mixing principle to form a large number of air-dissolved water microbubbles, the microbubbles spirally descend and then rise to the water surface under the flow guide of a guide cover, and oxygen in the air is dissolved into the water. The air inflow and the bubble size can be adjusted by adjusting the size of the water inlet valve. Due to the imbalance in density between the gas-water mixture and the liquid, a vertical upward buoyancy force is created, bringing it to the surface. In the floating process, micro bubbles can be attached to the water surface, and the micro bubbles are supported and maintained on the water surface after reaching the water surface. The discontinuities floating on the water surface are removed by a chain mud scraper.

The main part of the inner side of the body 1 adopts a carbon steel or stainless steel structure, and the inner side and the outer side are both provided with reinforcing ribs 22 for reinforcing the whole structure.

The whole integrated structure that adopts is provided with mixer 7, water outlet weir 20, slag scraper 11, snail concave air float 9, mud discharging device (mud collecting hopper 13 and mud discharging port 14) and deodorization sealing device (deodorization collecting pipeline 19) in stirring room 2, air float 3, flotation room 4 and water outlet room 5, sewage at first gets into stirring room 2, respectively adds coagulant and flocculant and mixes through two-stage coagulation and flocculation, reentrant air float 3, the microbubble intensive mixing that produces in snail concave air float 9. The flocs are attached to the small bubbles and vertically rise to the liquid level, and the slag scraping machine 11 which continuously and slowly rotates to form scum scrapes into a mud discharging device at the bottom.

The device is provided with a water outlet weir 20 for adjusting the liquid level height, and the liquid level height in the pool can be adjusted according to the water inflow; the bottom of the tank is provided with a sludge collecting hopper 13, and a valve can be opened periodically to discharge sludge; the deodorizing collecting pipe 19 is arranged on the device, and the released gas can be discharged by the deodorizing collecting pipe 19, so that secondary pollution is avoided; the operation mode of the slag scraping machine 11 can be controlled automatically or manually.

The aeration part adopts the principle of water-air miscibility, so that the treatment effect is good, the bubble quantity is large, the bubble diameter can reach 10-30 microns, and the novel Wobble-concave miscibility air floatation machine is completely different in appearance and structure from the first generation to the second generation; but also the working principle is different. The aerator cylinder is made of stainless steel, and adopts a sand blasting passivation treatment process; the corrosion resistance is improved; the upper part of the aerator adopts a rolling bearing, is lubricated by using lubricating grease, is provided with a through type pressure oil filling cup, and can be directly filled with oil without stopping. The lower part adopts a water lubrication ceramic bearing, so that the service life is long, and maintenance is not required.

The traction chain of the slag scraping machine 11 is of a roller chain type, the chain plate and the chain shaft are made of 304L stainless steel, the thickness of the chain plate of the chain is more than or equal to 4mm, the thickness of the slag scraping plate is more than or equal to 2mm, the thickness of the rubber plate is more than or equal to 10mm, the roller is made of MC nylon, the pitch is 63.5 mm, four stainless steel traction chain wheels are adopted, the separation inclined plates are of arc elevation angles, so that slag and water separation is facilitated, the resistance of scraping plates is reduced, and the slag is kept clean without splashing. The chain track adopts a carbon steel corrosion-proof (or stainless steel) lining epoxy resin cloth clamping plate, so that abrasion is reduced, the slag scraping machine 11 operates intermittently, and the operation time of the scraping plate can be automatically adjusted according to the actual slag amount, so that the operation is convenient.

The sealing cover shell mounting position is reserved at the edge opening of the air floatation slag section tank body, stainless steel seals (304) are additionally arranged on the periphery of the sealing cover shell, the steam dirty oil outflow is prevented from affecting the appearance of the equipment, the tank body can be sealed by a cover plate 17 made of glass fiber reinforced plastics, an oil-resistant rubber plate is adopted for the gap, the thickness of the cover plate 17 is not less than 8mm, a movable cover plate 17 is adopted above an aeration zone of a water inlet end, the maintenance is convenient, a window is arranged, and the spiral concave effect is convenient to observe. The water outlet end of the device is also provided with an observation port 18, so that the water outlet effect is convenient to observe and the water level is convenient to adjust.

The impeller 10 is added with internal blades, under the same operating condition, the gas yield is large, the distribution is more uniform, the diameters of bubbles can reach 10-30 micrometers, the same type of highest treatment effect is achieved, the operating effect is close to the dissolved air flotation effect, and the power consumption is only 1/5 of the dissolved air power consumption with the same treatment capacity.

The above-described embodiments are merely preferred embodiments for fully explaining the present utility model, and the scope of the present utility model is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present utility model, and are intended to be within the scope of the present utility model. The protection scope of the utility model is subject to the claims.

Claims (9)

1. The volute integrated high-efficiency air floatation device is characterized by comprising a body, wherein a stirring room, an air floatation box, a floatation room and a water outlet room are sequentially arranged on the body; a water inlet is formed in one side of the stirring room, a stirrer is arranged in the stirring room, and a lower shaft seat is arranged on one side of a stirring shaft of the stirrer; a volute air flotation machine and an impeller are arranged in the air flotation box; a slag scraping machine is arranged in the flotation chamber, a speed reducer is arranged on one side of the slag scraping machine, and a sludge collecting hopper and a sludge discharge port are arranged at the bottom of the flotation chamber; a water outlet is arranged between the water outlets.

2. A spiral recess integrated high efficiency air flotation device as claimed in claim 1, wherein the bottom of the body is provided with a bracket.

3. The volute integrated high-efficiency air flotation device according to claim 1, wherein a cover plate is movably arranged at the top of the flotation cell, and an observation port is formed in the cover plate.

4. The integrated, highly efficient air flotation device of claim 1 wherein the top of the body is provided with a deodorizing collection conduit.

5. The device of claim 1, wherein the air flotation machine comprises a motor, a fixed seat, a rotating shaft, a shell and a water-gas mixed explosion head, wherein the fixed seat is arranged on the body and used for fixing the motor, and the rotating shaft is connected to an output shaft of the motor.

6. The integrated, highly efficient air flotation device of claim 1 wherein an effluent weir is provided between the effluent chamber and the flotation chamber.

7. The integrated, highly efficient air flotation device of claim 1 wherein the body has guardrails mounted on both sides.

8. A spiral-concave integrated high-efficiency air flotation device as claimed in claim 1, wherein the main body part inside the body is of carbon steel or stainless steel structure.

9. The integrated, highly efficient air flotation device of claim 1 wherein the body has reinforcing ribs on both the inner and outer sides.

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