Air flotation method purifying and deslagging device for industrial wastewater treatment

Abstract

The utility model discloses an air flotation method purification and deslagging device for industrial wastewater treatment. The air flotation method purification and deslagging device comprises an air flotation box, a collection box, a scraping mechanism and an aeration pipe, the collecting box is arranged at one end of the air floatation box, the scraping mechanism is arranged above the air floatation box, and the aeration pipe is arranged at the bottom of the air floatation box; aeration is performed through the aeration pipe, and then scum on the surface of the air floatation box is scraped by the scraping mechanism and enters the collecting box to complete primary purification; the scraping mechanism comprises a chain plate, a scraping plate, a second motor, a power roller and a carrier roller, a plurality of aeration pipes are arranged side by side, a plurality of nozzles are arranged on the aeration pipes, and the spraying directions of the nozzles are vertically downward. Water surface scum can be scraped through the scraping mechanism, the effect of quickly cleaning the scum is achieved, and meanwhile omission of a water surface area during water surface scraping can be avoided through the cooperation of the scraping plate and the conical block; secondly, the aeration direction is vertically downward, so that the water body can be comprehensively aerated up and down, and the aeration effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial wastewater treatment, in particular to an air flotation purification and slag removal device for industrial wastewater treatment. Background Art

[0002] Industrial production generates a variety of wastewater, and different treatment processes are used for different wastewaters. Among them, the wastewater generated by the papermaking industry contains a large amount of scum and fiber, and usually uses flotation to perform preliminary scum removal before other treatment processes.

[0003] After searching, the prior art publication number CN 220334908 U shows a wastewater treatment device for ceramic fiber paper production. It uses air collection and distribution pipes to create aeration, using bubbles as carriers to adhere to fibers and impurities in the wastewater and float them to the surface. The air then naturally overflows through an overflow trough and is collected on the side of a second baffle, completing the slag removal effect of the flotation method.

[0004] The disadvantages of this method are as follows: first, the natural overflow method will reduce the efficiency of slag removal. The waiting time for natural overflow is long. When there is less slag, it may even require the wastewater overflow to be greater than the wastewater to drive the slag at one end to complete the overflow; second, the aeration direction of the air distribution pipe is vertically upward, which has a poor aeration effect on the wastewater below the air distribution pipe;

[0005] Therefore, the present invention provides a flotation purification and slag removal device. Summary of the Invention

[0006] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an air flotation purification and slag removal device for industrial wastewater treatment, which can scrape off slag on the water surface through a scraping mechanism to achieve the effect of rapid slag cleaning. At the same time, the use of a scraper in conjunction with a cone block can avoid omissions of water surface areas that cannot be scraped off when scraping the water surface; secondly, the vertical downward aeration direction can ensure comprehensive aeration of the upper and lower parts of the water body, thereby improving the aeration effect.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A flotation purification and slag removal device for industrial wastewater treatment includes a flotation box, a collection box, a scraping mechanism, and an aeration pipe; the collection box is arranged at one end of the flotation box, the scraping mechanism is arranged above the flotation box, and the aeration pipe is arranged at the bottom of the flotation box; aeration is carried out through the aeration pipe, and then the scraping mechanism scrapes the slag on the surface of the flotation box into the collection box to complete preliminary purification.

[0009] The scraping mechanism includes a chain plate, a scraper, a second motor, a power roller, and an idler; the power roller and the idler are provided with several and rotatably connected to the flotation box, and the power roller is provided with a pair and respectively arranged at both ends of the flotation box; the second motor is fixed on the side wall of the flotation box, and the output shaft of the second motor is connected to one of the power rollers and provides power; sprockets are provided at both ends of the power roller, and chains are provided on both sides of the chain plate, and the chains are connected to the sprockets; the idler is provided between the chain plates for support; the scraper is provided with several and arranged on the chain plate, and the scraper is rotatably connected to the chain plate; a fixed limit plate is provided on one side of the scraper, and one end of the limit plate is used to touch the chain plate to prevent the scraper from rotating at an excessively large angle, and an L-shaped elastic sheet is provided on the other side of the scraper, one side of the elastic sheet is fixedly connected to the chain plate, and the other side is fixedly connected to the scraper. The scraper is pushed vertically by utilizing its elastic characteristics and the rotation angle is limited by the limit plate.

[0010] One end of the flotation tank is provided with a water inlet for taking in water using an inclined surface, and the other end is provided with a water outlet pipe that can be controlled to open and close and a slot for scraping debris; one end of the flotation tank is provided with a cone block and is located at the water inlet. The conical surface of the cone block will not prevent the waste debris from floating up, but also enable the scraper in the scraping mechanism to first contact the conical surface of the cone block and then enter the flotation tank when rotating, which can ensure that no debris is missed when scraping the water surface from one end to the other.

[0011] When the scraper scrapes the water surface, it will touch the cone block at the water inlet. Under the action of the elastic sheet, the scraper rotates and passes over the cone block, and at the same time, the scraper enters the water surface from one end of the flotation tank, which can avoid missing anything when scraping the water surface.

[0012] The aeration pipes are provided with several nozzles arranged in parallel, and the nozzles are sprayed vertically downward to avoid insufficient aeration of the bottom wastewater; both ends of the aeration pipes are fixedly connected to the side walls of the flotation tank; one end of the aeration pipe is provided with a rotary joint and connected to an external air supply device.

[0013] Furthermore, the two ends of the aeration tube are rotatably connected to the side wall of the flotation tank, and gears are provided on the aeration tube and mesh with each other; a control mechanism fixed to the side wall of the flotation tank is provided above the aeration tube; the control mechanism includes a third motor, a control arm, a control shaft, an adjustment arm, and an adjustment slot; the adjustment arm is fixed at one end of the aeration tube, and an adjustment slot is provided on the adjustment arm. The third motor is fixed to the flotation tank through a motor base, one end of the control arm is fixedly connected to the output shaft of the third motor, the control shaft is fixed at one end of the control arm, and the control shaft is provided in the adjustment slot.

[0014] Furthermore, a cleaning mechanism is provided in the collection box, including a first electric push rod, a bracket, a guide shaft, and a cleaning plate; the cleaning plate is fixed on the bracket, one end of the guide shaft is fixedly connected to the bracket, and the other end is slidably connected to the side wall of the collection box, the first electric push rod is fixed on the outer wall of the collection box, and the top shaft of the first electric push rod penetrates the collection box and is fixedly connected to the bracket; the first electric push rod controls the distance between the cleaning plate and the scraper.

[0015] Furthermore, an inclined plate is provided on one side of the collection box to facilitate the collection and cleaning of waste slag and impurities, and a cleaning port is provided at the bottom of the collection box for cleaning slag.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) Wastewater flows into the flotation tank through the water inlet, and then is aerated through the aeration pipe to generate a large number of bubbles and adhere to the waste residue to float up. The second motor in the scraping mechanism then drives the scraper on the chain plate to rotate to scrape off the scum on the water surface. The wastewater that has completed the scum treatment is discharged through the outlet pipe and enters the next treatment process for reprocessing. The scraper will cyclically touch the cleaning plate and the cone block during the rotation and scraping process. When it touches the cone block, it first contacts the conical surface of the cone block and then enters the flotation tank, which can ensure that no water surface area is missed when scraping the scum from one end to the other. The scum on the scraper is then scraped off by the cleaning plate and dropped into the collection box, preventing the scraper from bringing the scum back to the flotation tank. At the same time, the use of the elastic sheet can ensure that the scraper can rotate and smoothly reset when it touches the cone block and the cleaning plate, thereby ensuring the scraping effect.

[0018] 2) Furthermore, the control arm and control shaft in the control mechanism control the adjustment arm to swing back and forth, which can control the aeration tube to rotate back and forth, so that the aeration bubbles are dispersed more evenly and the scum effect is improved; secondly, the vertical downward aeration direction can ensure comprehensive aeration of the water body from top to bottom, thereby improving the aeration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attachment Figure 1 This is a schematic diagram of the structure of an air flotation purification and slag removal device for industrial wastewater treatment. Figure 1 ;

[0020] Attachment Figure 2 This is a schematic diagram of the structure of an air flotation purification and slag removal device for industrial wastewater treatment. Figure 2 ;

[0021] Attachment Figure 3 It is a structural diagram of the control mechanism;

[0022] Attachment Figure 4 It is a structural diagram of the aeration pipe;

[0023] Attachment Figure 5 This is the structural diagram of the scraping mechanism Figure 1 ;

[0024] Attachment Figure 6 This is the structural diagram of the scraping mechanism Figure 2 ;

[0025] In the figure: 1. flotation tank; 11. outlet pipe; 12. cone block; 13. water inlet; 14. notch; 2. collection box; 21. cleaning port; 22. cleaning mechanism; 221. first electric push rod; 222. bracket; 223. cleaning plate; 224. guide shaft; 23. inclined plate; 3. scraping mechanism; 31. chain plate; 311. chain; 32. scraper; 321. elastic sheet; 322. limit plate; 33. second motor; 34. power roller; 341. sprocket; 35. roller; 4. aeration pipe; 41. nozzle; 42. gear; 43. rotary joint; 5. control mechanism; 51. third motor; 52. control arm; 53. control shaft; 54. adjustment arm; 55. adjustment slot. DETAILED DESCRIPTION

[0026] To facilitate understanding by those skilled in the art, Figure 1-6 , the technical solution of the utility model is further described in detail.

[0027] Example 1:

[0028] A flotation purification and slag removal device for industrial wastewater treatment includes a flotation tank 1, a collection tank 2, a scraping mechanism 3, and an aeration pipe 4; the collection tank 2 is arranged at one end of the flotation tank 1, the scraping mechanism 3 is arranged above the flotation tank 1, and the aeration pipe 4 is arranged at the bottom of the flotation tank 1; aeration is carried out through the aeration pipe 4, and then the scraping mechanism 3 scrapes the slag on the surface of the flotation tank 1 into the collection tank 2 to complete preliminary purification.

[0029] The scraping mechanism 3 includes a chain plate 31, a scraper 32, a second motor 33, a power roller 34, and an idler 35; the power rollers 34 and the idler 35 are provided with a plurality of them and are rotatably connected to the flotation tank 1, and the power rollers 34 are provided with a pair and are respectively provided at both ends of the flotation tank 1; the second motor 33 is fixed to the side wall of the flotation tank 1, and the output shaft of the second motor 33 is connected to one of the power rollers 34 and provides power; sprockets 341 are provided at both ends of the power roller 34, and chains 311 are provided on both sides of the chain plate 31, and the chains 311 are connected to the sprockets 341; the idler 35 It is provided between the chain plates 31 for support; the scraper plates 32 are provided with a plurality of them and are arranged on the chain plates 31, and the scraper plates 32 are rotatably connected to the chain plates 31; a fixed limit plate 322 is provided on one side of the scraper plate 32, and one end of the limit plate 322 is used to touch the chain plates 31 to prevent the scraper plate 32 from rotating at an excessive angle, and an L-shaped elastic piece 321 is provided on the other side of the scraper plate 32, and one side of the elastic piece 321 is fixedly connected to the chain plates 31, and the other side is fixedly connected to the scraper plate 32, and the scraper plate 32 is pushed vertically by utilizing its elastic characteristics and the rotation angle is limited by the limit plate 322.

[0030] The flotation tank 1 is provided with a water inlet 13 at one end for water intake through an inclined surface, and a water outlet pipe 11 that can be controlled to open and close and a notch 14 for scraping debris at the other end.

[0031] A conical block 12 is provided at one end of the flotation tank 1 and is located at the water inlet 13. The conical surface of the conical block 12 does not prevent the waste residue from floating up, but also enables the scraper 32 in the scraping mechanism 3 to first contact the conical surface of the conical block 12 when rotating, and then enter the flotation tank 1, which can ensure that no waste residue is missed when scraping the water surface from one end to the other.

[0032] When scraping the water surface, the scraper 32 will touch the cone block 12 at the water inlet 13. Under the action of the elastic sheet 321, the scraper 32 will rotate and pass over the cone block 12, and at the same time, the scraper 32 will enter the water surface from one end of the flotation tank 1, which can avoid missing any part of the water surface when scraping.

[0033] The aeration pipes 4 are provided with several nozzles 41 arranged in parallel, and the nozzles 41 are sprayed vertically downward to avoid insufficient aeration of the bottom wastewater; both ends of the aeration pipes 4 are fixedly connected to the side walls of the flotation tank 1; one end of the aeration pipe 4 is provided with a rotary joint 43 and connected to an external air supply device.

[0034] Example 2: The difference compared with Example 1 is that;

[0035] The two ends of the aeration tube 4 are rotatably connected to the side wall of the flotation tank 1, and gears 42 are provided on the aeration tube 4 and mesh with each other; a control mechanism 5 fixed to the side wall of the flotation tank 1 is provided above the aeration tube 4; the control mechanism 5 includes a third motor 51, a control arm 52, a control shaft 53, an adjustment arm 54, and an adjustment slot 55; the adjustment arm 54 is fixed to one end of the aeration tube 4, and the adjustment slot 55 is provided on the adjustment arm 54. The third motor 51 is fixed to the flotation tank 1 through a motor base, one end of the control arm 52 is fixedly connected to the output shaft of the third motor 51, the control shaft 53 is fixed to one end of the control arm 52, and the control shaft 53 is arranged in the adjustment slot 55.

[0036] Real-time Example 3: Based on Real-time Example 1;

[0037] A cleaning mechanism 22 is provided in the collection box 2, including a first electric push rod 221, a bracket 222, a guide shaft 224, and a cleaning plate 223; the cleaning plate 223 is fixed on the bracket 222, one end of the guide shaft 224 is fixedly connected to the bracket 222, and the other end is slidably connected to the side wall of the collection box 2, the first electric push rod 221 is fixed on the outer wall of the collection box 2, and the top shaft of the first electric push rod 221 penetrates the collection box 2 and is fixedly connected to the bracket 222.

[0038] Furthermore, a slanted plate 23 is provided on one side of the collecting box 2 to facilitate the collection and cleaning of waste slag and impurities, and a cleaning port 21 is provided at the bottom of the collecting box 2 for cleaning slag.

[0039] An air flotation purification and slag removal device for industrial wastewater treatment, the working process is as follows

[0040] Wastewater flows into the flotation tank 1 through the water inlet 13, and is then aerated through the aeration pipe 4 to generate a large number of bubbles and adhere to the waste residue to float up. The second motor 33 in the scraping mechanism 3 then drives the scraper 32 on the chain plate 31 to rotate to scrape off the scum on the water surface. The wastewater after the scum treatment is discharged through the outlet pipe 11 and enters the next treatment process for reprocessing. The scraper 32 will cyclically contact the cleaning plate 223 and the cone block 12 during the rotation and scraping process. When contacting the cone block 12, it first contacts the conical surface of the cone block 12 and then enters the flotation tank 1, which can ensure that no water surface area is missed when scraping the scum from one end to the other. The scum on the scraper 32 is then scraped off by the cleaning plate 223 and falls into the collection box 2, preventing the scraper 32 from bringing the scum back to the flotation tank 1. At the same time, the use of the elastic sheet 321 can ensure that the scraper 32 can rotate and smoothly reset when contacting the cone block 12 and the cleaning plate 223, thereby ensuring the scraping effect.

[0041] Furthermore, the control arm 52 and the control shaft 53 in the control mechanism 5 control the adjustment arm 54 to swing back and forth, thereby controlling the aeration pipe 4 to rotate back and forth, so that the aeration bubbles are dispersed more evenly and the scum removal effect is improved.

[0042] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In summary, the electronic or electrical components including but not limited to electric push rods, motors, etc. are components in the prior art, obtained through private customization or purchase, and the electrical connections between the components are conventional circuit connections or electrical connections in the prior art, and are not within the scope of protection of the present invention;

[0044] The above content is merely an example and explanation of the structure of the present utility model. Technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the scope of protection of the present utility model.

Claims

1. A flotation-based deslagging device for industrial wastewater treatment, comprising a flotation tank, a collection tank, a scraping mechanism, and an aeration tube; the collection tank is located at one end of the flotation tank, the scraping mechanism is located above the flotation tank, and the aeration tube is located at the bottom of the flotation tank; aeration is performed through the aeration tube, and then the scraping mechanism scrapes away slag on the surface of the flotation tank, which then enters the collection tank for preliminary purification; It is characterized by The scraping mechanism includes a chain plate, a scraper, a second motor, a power roller, and an idler; the power roller and the idler are provided with several and rotatably connected to the flotation box, and the power roller is provided with a pair and respectively arranged at both ends of the flotation box; the second motor is fixed to the side wall of the flotation box, and the output shaft of the second motor is connected to one of the power rollers and provides power; sprockets are provided at both ends of the power roller, and chains are provided on both sides of the chain plate, and the chains are connected to the sprockets; the idler is provided between the chain plates for support; the scraper is provided with several and arranged on the chain plates, and the scraper is rotatably connected to the chain plates; a fixed limit plate is provided on one side of the scraper, and one end of the limit plate is used to touch the chain plate to prevent the scraper from rotating at an excessively large angle, and an L-shaped elastic sheet is provided on the other side of the scraper, one side of the elastic sheet is fixedly connected to the chain plate, and the other side is fixedly connected to the scraper, by utilizing the elastic characteristics to push the scraper vertically and limit the rotation angle by the limit plate; One end of the flotation tank is provided with a water inlet for taking in water using an inclined surface, and the other end is provided with a water outlet pipe that can be controlled to open and close and a slot for scraping debris; one end of the flotation tank is provided with a cone block and is located at the water inlet. The conical surface of the cone block will not prevent the waste debris from floating up, but also enables the scraper in the scraping mechanism to first contact the conical surface of the cone block and then enter the flotation tank when rotating, which can ensure that no debris is missed when scraping the water surface from one end to the other.

2. The air flotation purification and slag removal device for industrial wastewater treatment according to claim 1, characterized in that The aeration pipes are provided with several nozzles arranged in parallel, and the nozzles are sprayed vertically downward to avoid insufficient aeration of the bottom wastewater; both ends of the aeration pipes are fixedly connected to the side walls of the flotation tank; one end of the aeration pipe is provided with a rotary joint and connected to an external air supply device.

3. The air flotation purification and slag removal device for industrial wastewater treatment according to claim 1, characterized in that The two ends of the aeration tube are rotatably connected to the side wall of the flotation tank, and gears are provided on the aeration tube and mesh with each other; a control mechanism fixed to the side wall of the flotation tank is provided above the aeration tube; the control mechanism includes a third motor, a control arm, a control shaft, an adjustment arm, and an adjustment slot; the adjustment arm is fixed to one end of the aeration tube, and the adjustment arm is provided with an adjustment slot; the third motor is fixed to the flotation tank through a motor base, one end of the control arm is fixedly connected to the output shaft of the third motor, the control shaft is fixed to one end of the control arm, and the control shaft is arranged in the adjustment slot.

4. The air flotation purification and slag removal device for industrial wastewater treatment according to claim 1, characterized in that A cleaning mechanism is provided in the collection box, including a first electric push rod, a bracket, a guide shaft, and a cleaning plate; the cleaning plate is fixed on the bracket, one end of the guide shaft is fixedly connected to the bracket, and the other end is slidably connected to the side wall of the collection box, the first electric push rod is fixed on the outer wall of the collection box, and the top shaft of the first electric push rod penetrates the collection box and is fixedly connected to the bracket.

5. The air flotation purification and slag removal device for industrial wastewater treatment according to claim 1, characterized in that An inclined plate is provided on one side of the collection box to facilitate the collection and cleaning of waste slag and impurities, and a cleaning port is provided at the bottom of the collection box for slag cleaning.

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