A cleaning wastewater treatment device for waste plastic regeneration

Abstract

The present application relates to wastewater treatment technical field, propose a kind of for waste plastic regeneration cleaning wastewater treatment device, comprising: air floatation tank, air floatation tank has separation chamber, separation chamber is used to separate the impurity in wastewater;Scraper is arranged on separation chamber, scraper has scraping surface, and scraping surface is used to scrape the impurity suspended in the surface of wastewater;Support lifting is arranged on air floatation tank;Sweeping brush is slidably arranged on support, and sweeping brush is used to scrape the impurity attached on scraping surface;Cleaning box is slidably arranged on support, and cleaning box is used to clean sweeping brush, after cleaning box moves, sweeping brush enters or cancels into cleaning box. Through the above technical scheme, the problem that the impurity suspended in air floatation tank in related art is not completely treated and the processing speed is slow is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, in particular, to a cleaning wastewater treatment device for waste plastic regeneration. BACKGROUND

[0002] After waste plastics are recycled, they are processed into plastic particles to realize resource regeneration. In this process, the waste plastics need to be cleaned, which will generate a large amount of cleaning wastewater. These wastewaters contain various chemical substances, such as oil stains, dyes, heavy metal ions, and organic matter. In the traditional treatment of wastewater, the wastewater first flows through a grid to remove larger impurities, and then enters a conditioning tank. In the conditioning tank, due to the action of gravity, the substances with a larger specific gravity in the wastewater, such as sand, will settle at the bottom of the tank, playing a clarifying role. The effluent of the conditioning tank is lifted by a pump to a flotation tank, which is equipped with an automatic dosing system. The polyaluminum chloride and polyacrylamide are added into the flotation tank with the water flow. With the action of the reagents, the small particles of suspended solids and colloids in the wastewater coagulate into larger particles and are removed by overflow. The effluent of the flotation tank enters a biochemical tank for biochemical treatment to remove most of the organic matter, ammonia nitrogen and other substances. Then, the sludge and water are quickly separated, and the impurities in the wastewater are further filtered out through filtration. Finally, after treatment by a disinfection tank and disinfection device, clean water that meets the standard for recycling can be obtained.

[0003] In the flotation process, a scraper is usually used to remove the impurities suspended on the surface of the wastewater. However, due to the presence of oil stains and other highly adhesive substances, a part of the impurities will stick to the scraper after being scraped off, or a part of the impurities will fall slowly on the scraper and be brought back to the flotation tank by the scraper, resulting in incomplete treatment of the suspended impurities and slow treatment speed. Even the suspended impurities will stay on the water surface for a long time, leading to dry clumping and then sinking into the wastewater. SUMMARY

[0004] The present application provides a cleaning wastewater treatment device for waste plastic regeneration, which solves the problems of incomplete treatment and slow treatment speed of the suspended impurities in the flotation tank in the related art.

[0005] The technical scheme of the present application is as follows:

[0006] A cleaning wastewater treatment device for waste plastic regeneration, comprising:

[0007] A flotation tank having a separation chamber for separating impurities in wastewater;

[0008] A scraper is cyclically moved on the separation chamber, and the scraper has a scraping surface for scraping off the impurities suspended on the surface of the wastewater;

[0009] A support is liftably arranged on the flotation tank;

[0010] A cleaning brush is slidably arranged on the support, and is used to scrape off impurities adhered to the scraping surface;

[0011] A cleaning box is slidably arranged on the support, and is used to clean the cleaning brush, and the cleaning brush enters or cancels entering the cleaning box after the cleaning box is moved.

[0012] Preferably, the air float tank has a collecting groove located at the discharging side of the separation chamber, and is used to collect impurities scraped off by the scraping surface and suspended on the water surface, and the cleaning brush is located directly above the collecting groove and slides along the length direction of the collecting groove.

[0013] Preferably, the air float tank further comprises:

[0014] A driving chain is arranged on the separation chamber, and the scraping plates are hingedly arranged on the driving chain at intervals, and the cleaning brush is used to clean the scraping surface after the scraping plates are moved above the collecting groove.

[0015] Preferably, the support has a working surface, and further comprises:

[0016] A first driving part is arranged on the working surface;

[0017] A slide rail is arranged on the first driving part, and the cleaning brush is slidably arranged on the slide rail, and the first driving part is used to drive the cleaning brush to approach or move away from the scraping plates;

[0018] A second driving part is arranged on the first driving part, and is used to drive the cleaning brush to reciprocally move along the slide rail.

[0019] Preferably, the second driving part comprises:

[0020] A first driving gear is rotatably arranged on the first driving part;

[0021] A first swing rod has one end arranged on the first driving gear;

[0022] A second swing rod has one end hingedly arranged on the other end of the first swing rod, and the other end of the second swing rod is hingedly arranged on the cleaning brush.

[0023] Preferably, the working surface has a slide groove, the cleaning box is slidably arranged in the slide groove, the sliding direction of the cleaning box along the slide groove is perpendicular to the moving direction of the cleaning brush along the slide rail, and the air float tank further comprises:

[0024] A rack is arranged on the bottom surface of the cleaning box;

[0025] A second driving gear is arranged at the bottom of the working surface, the second driving gear is engaged with the rack, and the rack moves back and forth along the chute after the second driving gear rotates.

[0026] Preferably, the application further comprises:

[0027] A plurality of first barriers are symmetrically arranged in the cleaning box.

[0028] A plurality of cleaning rollers are arranged on each of the first barriers, and the cleaning rollers are used to clean the cleaning brush in the cleaning box.

[0029] Preferably, the bottom of the cleaning box has a plurality of protrusions, and the protrusions are used to move the bristles of the cleaning brush.

[0030] Preferably, the application further comprises:

[0031] A second barrier is arranged in the cleaning box.

[0032] A pump is arranged in the cleaning box, the pump has a movable end and an exhaust port, the exhaust port is arranged at the end of the second barrier, and the exhaust port is used to blow air to the bristles of the cleaning brush after the cleaning brush pushes the movable end.

[0033] Preferably, the application further comprises:

[0034] A hydraulic rod is arranged on the air float tank, one end of the hydraulic rod away from the air float tank is arranged on the support, and the hydraulic rod is used to drive the support to rise and fall.

[0035] The working principle and advantages of the application are as follows:

[0036] In the application, wastewater enters the separation chamber from the water inlet of the air float tank, air is introduced into the air float tank to form small bubbles, and impurities float to the water surface. The scraping surface of the scraper scrapes the impurities floating on the water surface and guides them to one side of the air float tank. With the movement of the scraper, the cleaning brush will periodically contact the scraping surface to remove the residual impurities. After completing the cleaning task, the cleaning brush will enter the cleaning box for cleaning, and then return to the initial position during the interval of the work of multiple scrapers to prepare for the next round of cleaning work. The application improves the cleaning and wastewater treatment efficiency in the process of recycling waste plastics. BRIEF DESCRIPTION OF DRAWINGS

[0037] The above characteristics, technical features, advantages and implementation methods of the application will be further described in the following preferred embodiments in a clear and easy-to-understand manner combined with the drawings.

[0038] Figure 1 It is a structure diagram of the air float tank and the support of the application.

[0039] Figure 2 Structure diagram of the cleaning brush and the cleaning box of the present application;

[0040] Figure 3 Structure diagram of the rack of the present application;

[0041] Figure 4 Structure diagram of the rack of the present application; Figure 2 Enlarged view of part A in the middle;

[0042] Figure 5 Structure diagram of the collecting groove of the present application.

[0043] In the figure: 1, air float box; 101, separation chamber; 102, collecting groove; 103, discharge side; 2, support; 201, working surface; 202, chute; 3, cleaning brush; 301, brush hair; 4, cleaning box; 401, protruding part; 5, scraper; 5021, scraping surface; 501, driving chain; 6, first driving part; 7, slide rail; 8, second driving part; 801, first driving gear; 802, first swing lever; 803, second swing lever; 9, first fence; 10, cleaning roller; 11, second fence; 1101, exhaust port; 12, rack; 13, second driving gear; 14, hydraulic rod; 15, air pump; 1501, movable end. DETAILED DESCRIPTION

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0045] In order to make the drawing simple, only the parts related to the invention are shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0046] In this article, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0048] Reference Figures 1-5 For the first embodiment of the present application, a cleaning wastewater treatment device for waste plastic regeneration is provided, comprising: a gas float box 1 having a separation chamber 101 for separating impurities in wastewater; a scraper 5 arranged on the separation chamber 101, the scraper 5 having a scraping surface 5021 for scraping the impurities suspended on the surface of the wastewater; a bracket 2 arranged on the gas float box 1; a cleaning brush 3 slidably arranged on the bracket 2, the cleaning brush 3 being used to scrape the impurities adhered to the scraping surface 5021; a cleaning box 4 slidably arranged on the bracket 2, the cleaning box 4 being used to clean the cleaning brush 3, and after the cleaning box 4 moves, the cleaning brush 3 enters or cancels entering the cleaning box 4.

[0049] In the above scheme, the gas float box 1 is provided with a separation chamber 101, air or small bubbles are introduced into the separation chamber 101, so that the impurities in the wastewater rise to the water surface along with the bubbles, thereby realizing the separation from water. With the continuous movement of the scraper 5, the scraping surface 5021 can continuously scrape the impurities floating on the water surface and guide them to be discharged to one side of the gas float box 1. The bracket 2 is a lifting structure, the bracket 2 is arranged on one side of the top of the gas float box 1, by adjusting the height of the bracket 2, the height of the cleaning brush 3 can be changed. The cleaning brush 3 is installed on the bracket 2 and can slide up and down with the bracket 2. The cleaning brush 3 will periodically contact and scrape the impurities adhered to the scraping surface 5021, to prevent the impurities from falling into the wastewater again. The cleaning box 4 is also slidably arranged on the bracket 2, when the cleaning brush 3 completes a cleaning task, through the movement of the bracket 2, the cleaning brush 3 will automatically enter the cleaning box 4 for cleaning, to ensure that it remains clean for the next use.

[0050] Working principle: wastewater treatment: wastewater enters the separation chamber 101 from the water inlet of the air floatation tank 1, and air is introduced into the air floatation tank 1 to form micro-bubbles, which make the impurities float to the water surface. Impurity scraping: the scraping surface 5021 of the scraper 5 scrapes the impurities floating on the water surface and guides them to one side of the air floatation tank 1. Impurity cleaning: the cleaning brush 3 will periodically contact the scraping surface 5021 to remove the remaining impurities. Cleaning of the cleaning brush 3: after completing the cleaning task, the cleaning brush 3 enters the cleaning box 4 for cleaning, and then returns to the initial position in the gap between the multiple scrapers 5 to prepare for the next round of cleaning work. The present application improves the efficiency of wastewater treatment in the process of recycling waste plastics.

[0051] Further, the air floatation tank 1 has a collection tank 102 located on the discharge side 103 of the separation chamber 101, which is used to collect the impurities scraped by the scraping surface 5021 floating on the water surface. The cleaning brush 3 is located directly above the collection tank 102 and slides along the length direction of the collection tank 102.

[0052] In the above scheme, the collection tank 102 is located on the discharge side 103 of the separation chamber 101 of the air floatation tank 1. After the wastewater is treated by air floatation, the impurities are scraped and concentrated into the collection tank 102. The collection tank 102 is used to contain and guide the suspended impurities scraped by the scraper 5. These impurities float to the water surface during the air floatation process due to the action of air bubbles, and then are taken away from the water surface by the scraper 5. When the impurities are scraped off the water surface by the scraper 5, they will fall into the collection tank 102 along the trajectory of the scraper 5. The collection tank 102 ensures that the impurities do not fall back into the air floatation tank 1, but are effectively isolated. The cleaning brush 3 is located directly above the collection tank 102 and is in a position where it can contact any attached impurities on the scraping surface 5021. The cleaning brush 3 can slide along the length direction of the collection tank 102, so that the cleaning brush 3 covers the entire length of the collection tank 102, ensuring that all impurities on the scraping surface 5021 are cleaned. The sliding mechanism of the cleaning brush 3 allows it to periodically contact the scraping surface 5021, and the impurities attached to the scraping surface 5021 are scraped off by the cleaning brush 3 and fall into the collection tank 102. By placing the collection tank 102 on the discharge side 103 of the separation chamber 101 of the air floatation tank 1, the suspended impurities scraped by the scraper 5 can be effectively collected. The cleaning brush 3 is located directly above the collection tank 102 and can slide along the length direction of the collection tank 102, ensuring that the impurities on the scraping surface 5021 are thoroughly removed, avoiding the impurities falling back into the air floatation tank 1. Not only improves the efficiency of impurity removal, but also reduces maintenance cost and operation complexity. Effectively solves the problem mentioned in the background art that the scraped impurities may fall back into the water, resulting in incomplete treatment. By using the collection tank 102 and the cleaning brush 3, it can be ensured that the impurities are effectively removed, thereby improving the overall wastewater treatment efficiency.

[0053] Further, the drive chain 501 is arranged on the separation chamber 101, and the scraper 5 is hinged on the drive chain 501 at intervals, and the cleaning brush 3 is used to clean the scraping surface 5021 when the scraper 5 moves above the collecting groove 102.

[0054] In the above scheme, the drive chain 501 is a circulating chain that can withstand certain load and friction. The drive chain is arranged on the separation chamber 101 of the air floatation tank 1, usually on the top or side of the separation chamber 101, so as to facilitate the installation and movement of the scraper 5. The main function of the drive chain 501 is to serve as a support and driving mechanism for the scraper 5, driving the scraper 5 to move circularly above the surface of the wastewater. The scraper 5 has multiple scrapers, and each scraper 5 is connected to the drive chain 501 by hinging. The scraper 5 has a scraping surface 5021, which is the part that directly contacts the surface of the wastewater and scrapes off impurities. The scraper 5 moves under the drive of the drive chain 501, and its scraping surface 5021 contacts the surface of the wastewater, pushing the impurities suspended on the water surface into the collecting groove 102. Since there is a certain interval between adjacent scrapers 5, it helps to better collect the impurities.

[0055] During the movement of the scraper 5, some impurities may adhere to the scraping surface 5021 of the scraper 5 and are difficult to remove, so cleaning is needed. The cleaning brush 3 is located directly above the collecting groove 102, and when the scraper 5 moves above the collecting groove 102, the cleaning brush 3 can contact the scraping surface 5021 of the scraper 5. The function of the cleaning brush 3 is to clean the scraping surface 5021 of the scraper 5 to remove the residues that may be adhered to the scraper 5 during the process of scraping off impurities. The cleaning brush 3 can slide in the length direction of the collecting groove 102, so as to cover the entire scraping surface 5021 of the scraper 5, ensuring that it is thoroughly cleaned.

[0056] In summary, the drive chain 501 drives the scrapers 5 hinged at intervals to move circularly above the surface of the wastewater. The scraping surface 5021 of the scraper 5 contacts the surface of the wastewater, pushing the impurities suspended on the water surface into the collecting groove 102. When the scraper 5 moves above the collecting groove 102, the cleaning brush 3 cleans the scraping surface 5021 to remove the impurities residues that may be adhered. This ensures effective collection of impurities and continuous cleaning of the scraper 5, thereby improving the efficiency and effectiveness of wastewater treatment.

[0057] Further, the support 2 has a working surface 201, and further comprises a first driving part 6 arranged on the working surface 201, a sliding rail 7 arranged on the first driving part 6, and the cleaning brush 3 is slidingly arranged on the sliding rail 7. The first driving part 6 is used to drive the cleaning brush 3 to approach or move away from the scraper 5, and a second driving part 8 is arranged on the first driving part 6, and the second driving part 8 is used to drive the cleaning brush 3 to move reciprocally along the sliding rail 7.

[0058] In the above scheme, the first driving part 6 is arranged on the working surface 201, and the main function of the first driving part 6 is to drive the cleaning brush 3 to approach or move away from the scraper 5, so that the cleaning brush 3 can contact the scraping surface 5021 of the scraper 5 to perform cleaning work. The slide rail 7 provides a sliding path for the cleaning brush 3, so that the cleaning brush 3 can move smoothly on the track. The function of the slide rail 7 is to guide the moving direction of the cleaning brush 3, and to ensure that the cleaning brush 3 can move along the predetermined path. The cleaning brush 3 is slidably arranged on the slide rail 7 and can slide along the direction of the slide rail 7. The function of the cleaning brush 3 is to clean the impurities on the scraper 5. When the scraper 5 moves above the collection groove 102, the cleaning brush 3 will contact the scraping surface 5021 of the scraper 5 and scrape the impurities thereon. The second driving part 8 is arranged on the first driving part 6, and the main function of the second driving part 8 is to drive the cleaning brush 3 to reciprocate along the slide rail 7, that is, to move back and forth along the direction of the slide rail 7, so as to ensure that the cleaning brush 3 can cover the entire scraping surface 5021 of the scraper 5 and perform effective cleaning.

[0059] The first driving part 6 and the second driving part 8 jointly act on the cleaning brush 3, so that the cleaning brush 3 can effectively clean the impurities on the scraper 5. The first driving part 6 is responsible for driving the cleaning brush 3 to approach or move away from the scraper 5, so as to ensure that the cleaning brush 3 can contact the scraper 5 at the appropriate time and start cleaning work. The slide rail 7 provides a moving path for the cleaning brush 3, so as to ensure that the cleaning brush 3 can smoothly move along the predetermined direction. The second driving part 8 is responsible for driving the cleaning brush 3 to reciprocate along the slide rail 7, so as to cover the entire scraping surface 5021 of the scraper 5 and perform effective cleaning. In this way, the entire system can efficiently remove the impurities on the scraper 5, ensure the sufficient removal of impurities in the wastewater treatment process, and improve the treatment efficiency.

[0060] Further, the second driving part 8 comprises: a first driving gear 801 rotatably arranged on the first driving part 6; a first swing rod 802 arranged at one end of the first driving gear 801; and a second swing rod 803 hingedly connected at one end of the first swing rod 802 and at the other end of the cleaning brush 3.

[0061] In the above scheme, the first driving gear 801 is arranged on the first driving part 6 and can rotate around its own axis. The first driving gear 801 transmits power to the first swing rod 802 through its rotation. The function of the first swing rod 802 is to convert the rotary motion of the first driving gear 801 into swing motion. When the first driving gear 801 rotates, the first swing rod 802 will swing within a certain range. The other end of the second swing rod 803 is hingedly connected to the cleaning brush 3, so that when the first swing rod 802 swings, the second swing rod 803 will also swing and drive the cleaning brush 3 to reciprocate along the slide rail 7. The second driving part 8 realizes the reciprocating movement of the cleaning brush 3 by using a gear and swing rod mechanism.

[0062] When the first driving gear 801 rotates, the first driving gear 801 converts the rotating motion into the swing of the first swing rod 802 through the connection with the first swing rod 802. The swing of the first swing rod 802 is transmitted to the second swing rod 803 through the hinge point, and the second swing rod 803 also swings. The other end of the second swing rod 803 is hinged to the cleaning brush 3, so when the second swing rod 803 swings, the cleaning brush 3 reciprocates on the slide rail 7 to perform the cleaning work.

[0063] Further, the working surface 201 has a sliding groove 202, the cleaning box 4 is slidingly arranged in the sliding groove 202, the sliding direction of the cleaning box 4 along the sliding groove 202 is perpendicular to the moving direction of the cleaning brush 3 along the slide rail 7, and further comprising: a rack 12 arranged on the bottom surface of the cleaning box 4; and a second driving gear 13 arranged at the bottom of the working surface 201, the second driving gear 13 is engaged with the rack 12, and after the second driving gear 13 rotates, the rack 12 reciprocates along the sliding groove 202.

[0064] In the above scheme, the cleaning box 4 is slidingly arranged in the sliding groove 202, and the cleaning box 4 can freely slide in the sliding groove 202. The cleaning box 4 is used to clean the impurities on the cleaning brush 3, and after the cleaning brush 3 completes a cleaning work, the cleaning box 4 moves to the position below the cleaning brush 3 to receive the impurities cleaned. The sliding direction of the cleaning box 4 along the sliding groove 202 is perpendicular to the moving direction of the cleaning brush 3 along the slide rail 7. When the cleaning brush 3 moves in the horizontal direction, the cleaning box 4 moves in the vertical direction, and the two are perpendicular to each other. The function of the rack 12 is to engage with the second driving gear 13, so as to convert the rotating motion of the second driving gear 13 into the linear motion of the cleaning box 4. The second driving gear 13 is arranged at the bottom of the working surface 201 and can contact the rack 12. The second driving gear 13 is engaged with the rack 12, and when the second driving gear 13 rotates, the rack 12 reciprocates along the sliding groove 202, thereby driving the cleaning box 4 to move. The rotating direction of the second driving gear 13 determines the moving direction of the cleaning box 4. When the second driving gear 13 rotates clockwise, the cleaning box 4 moves in one direction; when the second driving gear 13 rotates counterclockwise, the cleaning box 4 moves in the opposite direction. Through the cooperation of the rack 12 and the second driving gear 13, the reciprocating movement of the cleaning box 4 along the sliding groove is realized. The groove provides a movement path for the cleaning box 4, ensuring that the cleaning box 4 can smoothly move along the predetermined direction. The rack 12 is arranged on the bottom surface of the cleaning box 4 and is engaged with the second driving gear 13. The second driving gear 13 is arranged at the bottom of the working surface 201 and drives the rack 12 to move by rotating, thereby making the cleaning box 4 reciprocate along the sliding groove.

[0065] Working principle: the second drive gear 13 is driven to rotate by an external power source such as a motor. When the second drive gear 13 rotates, it meshes with the rack 12, causing the rack 12 to move along the slide groove. The movement of the rack 12 drives the cleaning box 4 to reciprocate along the slide groove to receive the impurities cleaned by the cleaning brush 3.

[0066] Further, the first enclosure 9 is provided with a plurality of first enclosures 9 symmetrically arranged in the cleaning box 4, and the cleaning roller 10 is provided with a plurality of cleaning rollers 10, one of which is arranged on each first enclosure 9, and the cleaning roller 10 is used to clean the cleaning brush 3 in the cleaning box 4.

[0067] In the above scheme, after the cleaning brush 3 completes a cleaning work, the cleaning box 4 moves to the lower side of the cleaning brush 3, and the cleaning brush 3 enters the cleaning box 4. The cleaning brush 3 contacts the cleaning roller, and the cleaning roller further cleans the residual impurities on the cleaning brush 3. After the cleaning brush 3 completes the second cleaning, the cleaning box 4 moves away, and the cleaning brush 3 leaves the cleaning box 4, preparing for the next cleaning work.

[0068] Further, the bottom of the cleaning box 4 is provided with a plurality of protrusions 401, which are used to move the bristles 301 of the cleaning brush 3.

[0069] In the above scheme, after the cleaning brush 3 completes a cleaning work, the cleaning box 4 moves to the lower side of the cleaning brush 3, and the cleaning brush 3 enters the cleaning box 4. The cleaning brush 3 contacts the cleaning roller, and the cleaning roller further cleans the residual impurities on the cleaning brush 3. After the cleaning brush 3 completes the second cleaning, the cleaning box 4 moves away, and the cleaning brush 3 leaves the cleaning box 4, preparing for the next cleaning work.

[0070] Further, the second enclosure 11 is arranged in the cleaning box 4, and the air pump 15 is arranged in the cleaning box 4, and the air pump 15 has a movable end 1501 and an exhaust port 1101, and the exhaust port 1101 is arranged at the end of the second enclosure 11. After the movable end 1501 of the air pump 15 is pushed by the cleaning brush 3, the exhaust port 1101 is used to blow air to the bristles 301 of the cleaning brush 3.

[0071] In the above scheme, the bristles 301 of the cleaning brush 3 contact the movable end 1501 of the inflator 15, push the movable end 1501, the inflator 15 generates airflow, and blows the bristles 301 of the cleaning brush 3 through the exhaust port 1101 to help clean the impurities on the bristles 301. After the cleaning brush 3 completes the secondary cleaning, the cleaning box 4 is moved away, the cleaning brush 3 leaves the cleaning box 4, and is ready for the next cleaning work. The structure of the inflator 15 is the same as the existing principle of inflating the bicycle. Specifically, when the brush rod of the cleaning brush 3 enters the cleaning box 4, the brush rod will push the movable end 1501 to move, realize the compression in the inflator 15, and the gas in the inflator 15 will be discharged after compression. Further, the brush rod has a magnet block, and the movable end 1501 has an iron sheet or a magnet, which realizes the connection or disconnection of the brush rod and the movable end 1501.

[0072] Further, it also includes a hydraulic rod 14 arranged on the air float box 1, one end of the hydraulic rod 14 away from the air float box 1 is arranged on the support 2, and the hydraulic rod 14 is used to drive the support 2 to ascend and descend. The hydraulic rod 14 is used to control the support 2 to ascend and descend.

[0073] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A wastewater treatment device for washing wastewater from waste plastic recycling, characterized in that, include: The flotation tank (1) has a separation chamber (101) for separating impurities from wastewater; A scraper (5) is circulated and moved on the separation chamber (101). The scraper (5) has a scraping surface (5021) for scraping off impurities suspended on the surface of the wastewater. The support (2) is lifted and lowered on the air flotation box (1); A cleaning brush (3) is slidably disposed on the bracket (2), and the cleaning brush (3) is used to scrape off the impurities attached to the scraping surface (5021); The cleaning box (4) is slidably mounted on the bracket (2). The cleaning box (4) is used to clean the cleaning brush (3). After the cleaning box (4) is moved, the cleaning brush (3) enters or exits the cleaning box (4). The air flotation tank (1) has a collection trough (102), which is located on the discharge side (103) of the separation chamber (101). The collection trough (102) is used to collect impurities suspended on the water surface scraped off by the scraping surface (5021). The cleaning brush (3) is located directly above the collection trough (102) and slides along the length of the collection trough (102). Also includes: A drive chain (501) is disposed on the separation chamber (101). There are several scrapers (5), and the scrapers (5) are all hinged to the drive chain (501) at intervals. After the scraper (5) moves to the top of the collection trough (102), the cleaning brush (3) is used to clean the scraping surface (5021). The support (2) has a working surface (201) and further includes: The first drive unit (6) is disposed on the working surface (201); A slide rail (7) is disposed on the first drive unit (6), and the cleaning brush (3) is slidably disposed on the slide rail (7). The first drive unit (6) is used to drive the cleaning brush (3) to move closer to or away from the scraper (5). The second drive unit (8) is disposed on the first drive unit (6), and the second drive unit (8) is used to drive the cleaning brush (3) to reciprocate along the slide rail (7); The second drive unit (8) includes: The first drive gear (801) is rotatably mounted on the first drive unit (6); The first rocker arm (802) has one end mounted on the first drive gear (801); The second swing arm (803) is hinged at one end to the other end of the first swing arm (802), and the other end of the second swing arm (803) is hinged to the cleaning brush (3); the working surface (201) has a groove (202), the cleaning box (4) is slidably disposed in the groove (202), the sliding direction of the cleaning box (4) along the groove (202) is perpendicular to the moving direction of the cleaning brush (3) along the slide rail (7), and further includes: A rack (12) is disposed on the bottom surface of the cleaning box (4); The second drive gear (13) is located at the bottom of the working surface (201). The second drive gear (13) meshes with the rack (12). After the second drive gear (13) rotates, the rack (12) moves back and forth along the slide groove (202).

2. The wastewater treatment device for waste plastic recycling according to claim 1, characterized in that, Also includes: The first enclosure (9) has a plurality of them, and the plurality of the first enclosure (9) are symmetrically arranged in the cleaning box (4); There are several cleaning rollers (10), and each of the first enclosures (9) is provided with a cleaning roller (10). The cleaning rollers (10) are used to clean the cleaning brushes (3) located in the cleaning box (4).

3. The wastewater treatment device for waste plastic recycling according to claim 2, characterized in that, The bottom of the cleaning box (4) has several protrusions (401) for moving the bristles (301) of the cleaning brush (3).

4. The wastewater treatment device for waste plastic recycling according to claim 3, characterized in that, Also includes: The second enclosure (11) is installed inside the cleaning box (4); An air pump (15) is installed inside the cleaning box (4). The air pump (15) has a movable end (1501) and an exhaust port (1101). The exhaust port (1101) is located at the end of the second enclosure (11). After the cleaning brush (3) pushes the movable end (1501), the exhaust port (1101) is used to blow air onto the bristles (301) of the cleaning brush (3).

5. A wastewater treatment device for waste plastic recycling according to claim 4, characterized in that, Also includes: A hydraulic rod (14) is provided on the air flotation box (1). One end of the hydraulic rod (14) away from the air flotation box (1) is provided on the support (2). The hydraulic rod (14) is used to drive the support (2) to rise and fall.

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