Air flotation oil removal device

Abstract

The utility model discloses an air floatation oil removal device, which belongs to the technical field of air floatation oil removal and comprises a reaction box and an oil removal box, a stirring roller is arranged in the reaction box, a plurality of aerators are arranged below the stirring roller, the oil removal box is positioned on one side of the reaction box and connected with the reaction box, and a channel is arranged on the side wall of the reaction box connected with the oil removal box. A driving part is arranged on one side wall of the oil removal box, the output end of the driving part is located in the oil removal box and provided with a cleaning part, the upper portion of the cleaning part abuts against the channel to enable the reaction box to be in a closed state, when the cleaning part is far away from the channel, waste liquid in the reaction box can enter the oil removal box from the channel, and the bottom of the cleaning part adsorbs and cleans oil drops on the surface of the waste liquid; through cooperation of the stirring roller and the aerator, preliminary separation of oil and water in the waste liquid is accelerated, so that oil drops and bubbles are combined to float on the water surface, and then the oil drops enter the oil removal tank to be cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of air flotation oil removal, in particular to an air flotation oil removal device. Background Art

[0002] Flotation oil removal is a commonly used industrial treatment technology for removing oil from water or other liquids. It is based on the principle of flotation and uses the buoyancy of bubbles to separate oil from liquid. The working principle of flotation oil removal is to introduce the liquid containing oil into a device, add air or other gases to generate bubbles, and combine the bubbles with the oil particles to form a floating body. Due to the buoyancy of the bubbles, the floating body will float to the surface of the liquid to form a floating oil layer. Then, the floating oil layer is separated from the liquid by different separation methods, such as scraper separation or centrifugal separation. .

[0003] For example, an oil separator proposed in the Chinese patent application number CN201910507747.9 is used to treat oil sludge pollutants and separate the oil components therein, and is characterized in that it includes: a stirring device, which mixes and stirs the oil sludge pollutants with water in a stirring tank so that the oil components in the oil sludge pollutants float above the liquid surface at a specified height; and an oil scraping device, which is arranged at a liquid surface position at a specified height in the mixer, including a circulating rotating chain and an oil scraping plate arranged at a specified distance on the chain, and the oil scraping plate is used to scrape the oil components floating above the liquid surface out of the stirring tank. The U-shaped stirring tank structure and the double helical blade structure are adopted to make the material have more sufficient contact with the barrel wall to achieve the purpose of sufficient stirring; the setting of the oil scraping device and the oil collecting tank realizes the separation and recycling of oil in the oil sludge pollutants; the horizontal mixer can well realize the separation and recycling of oil in the oil sludge pollutants, but the device still has the following problems: the floating rate of oil particles in the waste liquid is slow, and the oil separation efficiency is far from achieving the expected purpose. Utility Model Content

[0004] The main purpose of the utility model is to provide an air flotation oil removal device, aiming to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model proposes an air flotation oil removal device, including a reaction box and an oil removal tank, wherein a stirring roller is arranged in the reaction box, a plurality of aerators are arranged below the stirring roller, the oil removal tank is located on one side of the reaction box and is connected to the reaction box, a channel is opened on the side wall where the reaction box and the oil removal tank are connected, a driving member is arranged on one side wall of the oil removal tank, an output end of the driving member is located in the oil removal tank and is provided with a cleaning member, the upper part of the cleaning member abuts against the channel to make the reaction box in a closed state, when the cleaning member is away from the channel, the waste liquid in the reaction box can enter the oil removal tank from the channel, and the bottom of the cleaning member adsorbs and cleans the oil droplets on the surface of the waste liquid.

[0006] Optionally, the stirring roller comprises a rotating shaft and a plurality of stirring blades, the stirring blades are arranged in sequence along the arc surface of the rotating shaft, and each stirring blade is provided with a plurality of bubble holes.

[0007] Optionally, the cleaning component includes a shielding portion and a cleaning portion, the shielding portion and the cleaning portion are vertically arranged, and the shielding portion and the side wall of the oil removal tank are parallelly arranged.

[0008] Optionally, a plurality of scrapers are provided at the lower end of the cleaning portion, and adsorption cotton is provided at the lower end of the scrapers.

[0009] Optionally, a driving motor is provided outside the reaction box, and the driving motor is connected to the rotating shaft to drive the stirring roller to rotate.

[0010] Optionally, the reaction box is provided with a water inlet for discharging waste liquid into the reaction box.

[0011] Optionally, an aeration pipe is provided between each aerator, and the aeration pipes are all connected to a main pipeline, and the main pipeline is connected to the outside of the reaction box. An oxygen pump is provided outside the reaction box, and the main pipeline is connected to the oxygen pump.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The flotation oil removal device of the technical solution of the utility model is provided with a reaction box and an oil removal box, wherein a stirring roller is provided in the reaction box, and a plurality of aerators are provided below the stirring roller, and the oil removal box is located at one side of the reaction box and connected thereto, and a channel is provided on the side wall where the reaction box and the oil removal box are connected, and a driving member is provided on one side wall of the oil removal box, and the output end of the driving member is located in the oil removal box and is provided with a cleaning member, and the upper part of the cleaning member abuts against the channel to make the reaction box in a closed state, and when the cleaning member is away from the channel, the waste liquid in the reaction box can enter the oil removal tank from the channel, and the bottom of the cleaning member adsorbs and cleans the oil droplets on the surface of the waste liquid; through the cooperation of the stirring roller and the aerator, the preliminary separation of oil and water in the waste liquid is accelerated, so that the oil droplets combine with the bubbles and float on the water surface, and then enter the oil removal tank to clean the oil droplets. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0015] Figure 1 This is a structural schematic diagram of an embodiment of the air flotation oil removal device of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the air flotation oil removal device of the utility model;

[0017] Figure 3 This is a schematic diagram of the planar structure of the connection between the aerator and the oxygen pump.

[0018] Description of Figure Numbers:

[0019] Label name Label name 100 Air flotation oil removal device 10 Reaction box 11 Water Inlet 12 aisle 13 Observation window 20 Oil removal tank 21 Drain 30 Mixing roller 31 Shaft 32 Mixing blade 33 Bubble hole 40 Drive motor 50 Drive parts 60 Cleaning pieces 61 Blocking part 62 Cleaning Department 63 Scraper 64 Absorbent cotton 70 Aerator 71 Aeration pipe 72 Main pipeline 80 Oxygen pump

[0020] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0024] The utility model provides an air flotation oil removal device 100 .

[0025] See also Figure 1-Figure 3In one embodiment of the utility model, the flotation oil removal device 100 includes a reaction box 10 and an oil removal box 20, wherein the reaction box 10 is provided with a stirring roller 30, and a plurality of aerators 70 are provided below the stirring roller 30, and the oil removal box 20 is located on one side of the reaction box 10 and connected thereto, and a channel 12 is provided on the side wall where the reaction box 10 and the oil removal box 20 are connected, and a driving member 50 is provided on one side wall of the oil removal box 20, and an output end of the driving member 50 is located in the oil removal box 20 and is provided with a cleaning member 60, and the upper part of the cleaning member 60 abuts against the channel 12 to make the reaction box 10 in a closed state, and when the cleaning member 60 is away from the channel 12, the waste liquid in the reaction box 10 can enter the oil removal box 20 from the channel 12, and the bottom of the cleaning member 60 adsorbs and cleans the oil droplets on the surface of the waste liquid.

[0026] In this embodiment, the reaction box 10 is provided with a water inlet 11 for discharging waste liquid into the reaction box 10. The driving member 50 can be an electric push rod that can reciprocate and drive the cleaning member 60 to reciprocate. Waste liquid is discharged into the reaction box 10 from the water inlet 11. The reaction box 10 is provided with an observation window 13. The water level in the reaction box 10 is observed from the observation window 13. When the water level in the reaction box 10 exceeds the channel 12, the filling of water into the reaction box 10 is stopped. In the initial state, the output end of the driving member 50 extends so that the upper part of the cleaning member 60 is against the channel 12, so that the waste liquid in the reaction box 10 will not flow from the channel 12 to the deoiling tank 20.

[0027] Among them, the stirring roller 60 includes a rotating shaft 31 and a plurality of stirring blades 32, and the stirring blades 32 are arranged in sequence along the arc surface of the rotating shaft 31. Each stirring blade 32 is provided with a plurality of bubble holes 33. The reaction box 10 is provided with a driving motor 40 outside, and the driving motor 40 is connected to the rotating shaft 31. The driving motor 40 can be a common stepping motor, which is used to drive the stirring roller 30 to rotate. During the rotation of the stirring blade 32, water passes through the bubble holes 33 to generate fine bubbles. Under the action of surface tension, the generated fine bubbles adhere the tiny oil droplets dispersed in the waste liquid to the bubbles. This adhesion process increases the buoyancy of the bubbles, which helps the oil droplets to float up. As the buoyancy of the bubbles increases, the bubbles with oil droplets begin to float to the water surface.

[0028] During this process, a stable combination is formed between the air bubbles and the oil droplets, ensuring that the oil droplets can float up with the air bubbles. When the air bubbles carrying oil droplets float to the water surface, a layer of scum is formed. This layer of scum is mainly composed of oil and bubbles, which is convenient for subsequent oil-water separation.

[0029] In one embodiment of the utility model, an aeration pipe 71 is provided between each aerator 70 , and the aeration pipes 71 are connected to a main pipeline 72 , and the main pipeline 72 is connected to the outside of the reaction box 10 . An oxygen pump 80 is provided outside the reaction box 10 , and the main pipeline 72 is connected to the oxygen pump 80 .

[0030] In this embodiment, the oxygen pump 80 and the aerator 70 are both prior art and will not be described in detail here. The oxygen pump 80 inhales oxygen from the atmosphere, and under the action of the aerator 70, the oxygen enters the water body and rises to the water surface in the form of bubbles. These bubbles provide a surface area in contact with the water body, promoting the contact between oxygen and water. As the bubbles rise to the water surface, the dissolved oxygen in the water is pushed to the water surface and cooperates with the stirring roller 30 to accelerate the initial separation of oil and water in the waste liquid.

[0031] In one embodiment of the utility model, the cleaning part 60 includes a shielding portion 61 and a cleaning portion 62, the shielding portion 61 and the cleaning portion 62 are vertically arranged, the shielding portion 61 and the side wall of the oil removal tank 20 are parallelly arranged, and a plurality of scrapers 63 are provided at the lower end of the cleaning portion 62, and adsorption cotton 64 is provided at the lower end of the scraper 63.

[0032] In this embodiment, after the reaction box 10 is aerated for 10 minutes, the oil droplets in the waste liquid combine with the bubbles and float on the water surface, and the driving member 50 is started to retract, so that it drives the cleaning member 60 away from the channel 12. At this time, the channel 12 is opened, and the oil-water mixture in the reaction box 10 that is submerged in the channel 12 enters the oil removal tank 20 from the channel 12, driving the driving member 50 to move repeatedly, so that the adsorption cotton 64 at the lower end of the scraper 63 adsorbs and cleans the oil droplets on the water surface. The cleaning member 60 is detachably connected to the driving member 50. When the adsorption cotton 64 needs to be replaced, the oil removal tank 20 is opened, and the cleaning member 60 can be disassembled to replace the adsorption cotton 64; after the oil removal treatment, the drain port 21 on the side wall of the oil removal tank 20 is opened, and water is discharged from the drain port 21.

[0033] Working principle: discharge the waste liquid into the reaction box 10 from the water inlet 11, observe the water level in the reaction box 10 from the observation window 13, and when the water level in the reaction box 10 is above the channel 12, stop filling the reaction box 10 with water, then start the drive motor 40 to drive the stirring roller 30 to rotate, and simultaneously start the aerator 70 to accelerate the generation of fine bubbles, so that the oil droplets and bubbles are mixed and float on the water surface. After reacting for 10 minutes, drive the drive member 50 to drive the cleaning member 60 to contract and open the channel 12. The oil-water mixture in the reaction box 10 that is above the channel 12 enters the de-oiling tank 20 from the channel 12, and drive the drive member 50 to move repeatedly, so that the adsorption cotton 64 at the lower end of the scraper 63 adsorbs and cleans the oil droplets on the water surface.

[0034] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An air flotation oil removal device, characterized in that: It includes a reaction box and an oil removal tank, wherein a stirring roller is arranged in the reaction box, a plurality of aerators are arranged below the stirring roller, the oil removal tank is located at one side of the reaction box and connected thereto, a channel is opened on the side wall where the reaction box and the oil removal tank are connected, a driving component is arranged on one side wall of the oil removal tank, an output end of the driving component is located in the oil removal tank and is provided with a cleaning component, the upper part of the cleaning component abuts against the channel to make the reaction box in a closed state, when the cleaning component is away from the channel, the waste liquid in the reaction box can enter the oil removal tank from the channel, and the bottom of the cleaning component adsorbs and cleans the oil droplets on the surface of the waste liquid.

2. The air flotation oil removal device according to claim 1, characterized in that: The stirring roller comprises a rotating shaft and a plurality of stirring blades. The stirring blades are arranged in sequence along the arc surface of the rotating shaft, and each stirring blade is provided with a plurality of air bubble holes.

3. The air flotation oil removal device according to claim 1, characterized in that: The cleaning part comprises a shielding part and a cleaning part, the shielding part and the cleaning part are arranged vertically, and the shielding part and the side wall of the oil removal tank are arranged parallelly.

4. The air flotation oil removal device according to claim 3, characterized in that: A plurality of scrapers are arranged at the lower end of the cleaning part, and adsorption cotton is arranged at the lower end of the scrapers.

5. The air flotation oil removal device according to claim 2, characterized in that: A driving motor is disposed outside the reaction box, and the driving motor is connected to the rotating shaft and is used to drive the stirring roller to rotate.

6. The air flotation oil removal device according to claim 1, characterized in that: The reaction box is provided with a water inlet for discharging waste liquid into the reaction box.

7. The air flotation oil removal device according to claim 1, characterized in that: An aeration pipe is arranged between each aerator, and the aeration pipes are all connected to a main pipeline, and the main pipeline is connected to the outside of the reaction box. An oxygen pump is arranged outside the reaction box, and the main pipeline is connected to the oxygen pump.

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