A kind of wood pulp white card processing wastewater treatment device

Abstract

The utility model relates to wood pulp white card wastewater treatment technical field, and disclose a kind of wastewater treatment device for wood pulp white card processing, it include: air floatation tank and scraper, air floatation tank is used to accommodate wastewater and carries out air floatation effect to wastewater;Scraper is slidably arranged above air floatation tank, and the floating dregs on the surface of air floatation tank is scraped away by the sliding of scraper, while the floating dregs adhered to the surface of scraper is shaken off by the shaking of scraper itself when the floating dregs is scraped away by scraper.The application, the shaking of scraper can be generated in the process of scraping floating dregs, which can shake off the floating dregs adhered to the scraper synchronously, so as to reduce the operating burden of scraper, ensure that scraper can be long-term stable operation, also make the scraping of scraper more thorough, and, air flow is also generated to blow air to the surface of scraper in the moving process of scraper, which can remove the floating dregs for shaking off, so as to further ensure the cleanliness of scraper.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology for wood pulp white cardboard, and more specifically to a wastewater treatment device for wood pulp white cardboard processing. Background Technology

[0002] Wood pulp white cardboard is a type of thick paper made primarily from high-quality wood pulp. It features high stiffness, high whiteness, and a smooth surface, and is widely used in packaging, printing, and other fields. The production process of wood pulp white cardboard generates a lot of wastewater, which needs to be treated by a dedicated wastewater treatment device before it can be discharged.

[0003] Currently, conventional wastewater treatment devices for wood pulp white cardboard processing mainly include air flotation tanks, which remove suspended solids and fibers from wastewater through air flotation. Due to their simple structure, they are widely used.

[0004] However, the aforementioned device still has certain drawbacks, namely:

[0005] The scum floating on the surface of the flotation tank is usually scraped away by a scraper. However, wood pulp white cardboard requires bleaching and other processes during processing, so the concentration of pollutants in its wastewater is relatively higher than that of ordinary papermaking wastewater. As a result, the scum produced by the wood pulp white cardboard wastewater under the flotation effect is more viscous, making it easier for the scum to stick to the scraper. This leads to a heavy burden on the scraper, making it difficult to operate and causing incomplete scraping. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a wastewater treatment device for wood pulp white cardboard processing, so as to solve the problems existing in the background art.

[0007] This utility model provides the following technical solution: a wastewater treatment device for wood pulp white cardboard processing, comprising:

[0008] A flotation tank is used to contain wastewater and perform flotation on it.

[0009] The scraper is slidably positioned above the flotation tank. As the scraper slides, it scrapes away the scum on the surface of the flotation tank. At the same time, as the scraper scrapes away the scum, it swings to shake off the scum adhering to its surface.

[0010] Furthermore, the scraper is equipped with a drive assembly, which includes a motor, a sprocket, a chain, and a connecting seat. The sprocket is rotatably mounted on the flotation tank, the chain meshes with the sprocket, and the rotation of the sprocket will drive the chain to rotate. The motor is fixedly mounted on the flotation tank, and the motor output shaft is connected to the sprocket and can drive the sprocket to rotate. The connecting seat is fixedly mounted on one link of the sprocket and moves with the chain. The scraper is connected to the connecting seat and moves synchronously with the connecting seat.

[0011] Furthermore, the scraper is also equipped with a frame and a support. The frame is fixedly connected to the connecting seat, and the support is installed in the hollow area of ​​the frame in a reciprocating rotation. The surface of the frame near the flotation tank has an opening, and the scraper extends into the frame from the opening and is fixedly connected to the support.

[0012] Furthermore, the scraper is also equipped with a power assembly, which includes a rack, a gear, a screw, a sleeve, and a connecting rod. The rack is fixedly installed on the inner wall of the flotation tank. The gear is rotatably installed in the hollow area of ​​the support cylinder and close to the end of the support cylinder. When the scraper moves the scum, the gear meshes with the rack, causing the gear to rotate. The screw is coaxially connected to the shaft of the support. The sleeve is threaded onto the screw. When the sleeve slides along the axis of the screw, it drives the screw to rotate. One end of the connecting rod is rotatably connected to the end of the sleeve, and the other end is rotatably connected to the surface of the gear. When the gear rotates, it drives the end of the connecting rod connected to it to move. When the end of the connecting rod close to the gear is driven by the gear, it drives the sleeve to slide back and forth along the axis of the screw.

[0013] Furthermore, the scraper is also equipped with an air blowing assembly, which is fixedly installed on the surface of the frame. The oscillation of the scraper will drive the air blowing assembly to blow air onto the surface of the scraper in contact with the scum.

[0014] Furthermore, the air blowing assembly includes an air blowing hood, a fixed plate, and a movable plate. The air blowing hood is fixedly installed on the surface of the frame, and the air outlet of the air blowing hood faces the surface where the scraper contacts the scum. The fixed plate is fixedly installed inside the frame, and the movable plate is fixedly installed on the support. The fixed plate, the movable plate, the support, and the inner wall of the frame together form a working chamber. An air inlet and an air outlet are respectively opened in the working chamber. A ventilation hole is opened on the surface of the frame. The air inlet and the ventilation hole are connected, and the working chamber can only draw in air through the air inlet and the ventilation hole. The air outlet is connected to the air blowing hood, and the air in the working chamber can only flow out from the air outlet.

[0015] Furthermore, the rotation of the bracket causes the movable plate to rotate away from the fixed plate, increasing the working chamber and drawing air into the working chamber through the air inlet and vent. The bracket then causes the movable plate to move closer to the fixed plate, reducing the working chamber and expelling the air from the working chamber through the air outlet.

[0016] In this application, the scraper can oscillate during the scraping of scum, which can simultaneously shake off the scum adhering to the scraper, thereby reducing the operating burden of the scraper and ensuring that the scraper can operate stably for a long time. At the same time, it also makes the scraper scrape the material more thoroughly. In addition, during the movement of the scraper, an airflow is generated to blow air onto the surface of the scraper, which can remove the unshaken scum, thereby further ensuring the cleanliness of the scraper. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a first-view schematic diagram of the internal structure of the frame of this utility model;

[0019] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 This is a second-view schematic diagram of the internal structure of the frame of this utility model;

[0021] Figure 5 This utility model Figure 4 Enlarged diagram of point B in the middle.

[0022] The attached figures are labeled as follows:

[0023] 100. Air flotation tank;

[0024] 200. Scraper;

[0025] 210. Drive assembly; 211. Motor; 212. Sprocket; 213. Chain; 214. Connector;

[0026] 220. Frame tube;

[0027] 230. Bracket;

[0028] 240. Power assembly; 241. Rack; 242. Gear; 243. Screw; 244. Screw sleeve; 245. Connecting rod;

[0029] 250. Air blowing assembly; 251. Air blowing cover; 252. Fixed plate; 253. Movable plate; 254. Air inlet; 255. Air outlet; 256. Vent. Detailed Implementation

[0030] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The wastewater treatment device for wood pulp white cardboard processing involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] Reference Figure 1-3This utility model provides a wastewater treatment device for wood pulp white cardboard processing, including: an air flotation tank 100 and a scraper 200. The air flotation tank 100 is used to contain wastewater and perform air flotation on the wastewater. The scraper 200 is slidably disposed above the air flotation tank 100, and the scraper 200 will scrape away the scum on the surface of the air flotation tank 100 when it slides. At the same time, when the scraper 200 scrapes away the scum, the scraper 200 itself will swing to shake off the scum adhering to its surface.

[0032] The scraper 200 is equipped with a drive assembly 210, which includes a motor 211, a sprocket 212, a chain 213, and a connecting seat 214. The sprocket 212 is rotatably mounted on the flotation tank 100. The chain 213 meshes with the sprocket 212, and the rotation of the sprocket 212 will drive the chain 213 to rotate. The motor 211 is fixedly mounted on the flotation tank 100, and the output shaft of the motor 211 is connected to the sprocket 212 and can drive the sprocket 212 to rotate. The connecting seat 214 is fixedly mounted on a link of the sprocket 212 and moves with the chain 213. The scraper 200 is connected to the connecting seat 214 and moves synchronously with the connecting seat 214.

[0033] The scraper 200 is also equipped with a frame 220 and a support 230. The frame 220 is fixedly connected to the connecting seat 214. The support 230 is installed in the hollow area of ​​the frame 220 in a reciprocating rotation. The surface of the frame 220 near the flotation tank 100 has an opening. The scraper 200 extends into the frame 220 through the opening and is fixedly connected to the support 230.

[0034] The scraper 200 is also equipped with a power assembly 240, which includes a rack 241, a gear 242, a screw 243, a screw sleeve 244, and a connecting rod 245. The rack 241 is fixedly installed on the inner wall of the flotation tank 100. The gear 242 is rotatably installed in the hollow area of ​​the support cylinder 220 and close to the end of the support cylinder 220. When the scraper 200 moves the scum, the gear 242 meshes with the rack 241, causing the gear 242 to rotate. The screw 243 is coaxially connected to the rotating shaft of the support 230. The threaded sleeve 244 is threaded onto the screw 243. When the threaded sleeve 244 slides along the axis of the screw 243, it drives the screw 243 to rotate. One end of the connecting rod 245 is rotatably connected to the end of the threaded sleeve 244, and the other end is rotatably connected to the surface of the gear 242. When the gear 242 rotates, it drives the end of the connecting rod 245 connected to it to move. When the end of the connecting rod 245 near the gear 242 is driven by the gear 242, it drives the threaded sleeve 244 to slide back and forth along the axis of the screw 243.

[0035] Thus, in use, simply start the motor 211. The motor 211 will drive the sprocket 212 to rotate, the sprocket 212 will drive the chain 213 to rotate, the chain 213 will drive the connecting seat 214 to move, the connecting seat 214 will drive the frame cylinder 220 to move synchronously, the frame cylinder 220 will drive the support 230 to move, and the support 230 will drive the scraper 200 to move. When the scraper 200 moves on the surface of the flotation tank 100, it will scrape away the scum floating on the surface of the flotation tank 100. At the same time, during the scraping of the scum, the gear 242 will mesh with the rack 241, thereby driving the gear 242 to rotate. It should be noted that the gear 242, the connecting rod 245, and the screw sleeve 244 constitute a crank-slider mechanism, and the gear 242 belongs to... The crank and the screw sleeve 244 are sliders. Thus, the rotation of the gear 242 will drive the screw sleeve 244 to slide back and forth along the axis of the screw 243. Since the threaded connection between the screw sleeve 244 and the screw 243 is not self-locking, the reciprocating sliding of the screw sleeve 244 on the surface of the screw 243 will drive the screw 243 to rotate back and forth. The reciprocating rotation of the screw 243 will drive the bracket 230 to rotate back and forth, which in turn will drive the scraper 200 to swing. In this way, the scum adhering to the scraper 200 will be partially or completely removed by centrifugal force and vibration. This can greatly reduce the burden of scum on the scraper 200, thereby ensuring that the scraper 200 can operate stably for a long time, and at the same time, it can make the scraper 200 scrape away the scum more thoroughly.

[0036] In the above solution, the centrifugal force and vibration force generated by the oscillation of the scraper 200 are sometimes insufficient, resulting in the incomplete removal of the scum adhering to the scraper 200, and some scum residue may still remain. Therefore, further optimization is proposed as follows:

[0037] like Figure 2 , Figure 3 as well as Figure 5 As shown, the scraper 200 is also equipped with an air blowing assembly 250, which is fixedly installed on the surface of the frame cylinder 220. The oscillation of the scraper 200 will drive the air blowing assembly 250 to blow air onto the surface of the scraper 200 in contact with the scum.

[0038] The air blowing assembly 250 includes an air blowing hood 251, a fixed plate 252, and a movable plate 253. The air blowing hood 251 is fixedly installed on the surface of the frame cylinder 220, and the air outlet of the air blowing hood 251 faces the surface of the scraper 200 that contacts the scum. The fixed plate 252 is fixedly installed inside the frame cylinder 220, and the movable plate 253 is fixedly installed on the support 230. The fixed plate 252, the movable plate 253, the support 230, and the inner wall of the frame cylinder 220 together form a working chamber. An air inlet 254 and an air outlet 255 are respectively opened in the working chamber. A ventilation hole 256 is opened on the surface of the frame cylinder 220. The air inlet 254 and the ventilation hole 256 are connected, and the working chamber can only draw in air through the air inlet 254 and the ventilation hole 256. The air outlet 255 is connected to the air blowing hood 251, and the air in the working chamber can only flow out from the air outlet 255.

[0039] The rotation of the bracket 230 causes the movable plate 253 to rotate away from the fixed plate 252, which increases the working chamber and allows air to be drawn into the working chamber from the air inlet 254 and the air outlet 256. The bracket 230 drives the movable plate 253 to move closer to the fixed plate 252, which reduces the working chamber and allows the air in the working chamber to be discharged from the air outlet 255.

[0040] Thus, when the support 230 reciprocates and drives the scraper 200 to swing, it will simultaneously drive the movable plate 253 away from the fixed plate 252. This will increase the working chamber to generate negative pressure. This negative pressure will draw air from the outside through the air inlet 254 and the air vent 256. Then, when the support 230 rotates and drives the movable plate 253 to move closer to the fixed plate 252, it will cause the working chamber to shrink. In this way, the air inside the working chamber will be squeezed out from the air outlet 255 and blown from the air blowing cover 251 toward the surface of the scraper 200. This will further remove the scum adhering to the surface of the scraper 200, effectively improve the removal effect of the scum on the scraper 200, and further ensure that the scraper 200 can work normally.

[0041] Finally, it should be noted that the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wastewater treatment device for wood pulp white cardboard processing, characterized in that, include: A flotation tank (100) is used to contain wastewater and perform flotation on the wastewater; The scraper (200) is slidably positioned above the flotation tank (100). The scraper (200) will scrape away the scum on the surface of the flotation tank (100) as it slides. At the same time, when the scraper (200) scrapes away the scum, the scraper (200) itself will swing to shake off the scum adhering to its surface.

2. The wastewater treatment device for wood pulp white cardboard processing according to claim 1, characterized in that: The scraper (200) is equipped with a drive assembly (210), which includes a motor (211), a sprocket (212), a chain (213), and a connecting seat (214). The sprocket (212) is rotatably mounted on the flotation tank (100). The chain (213) meshes with the sprocket (212), and the rotation of the sprocket (212) will drive the chain (213) to rotate. The motor (211) is fixedly mounted on the flotation tank (100), and the output shaft of the motor (211) is connected to the sprocket (212) and can drive the sprocket (212) to rotate. The connecting seat (214) is fixedly mounted on a link () of the sprocket (212) and moves with the chain (213). The scraper (200) is connected to the connecting seat (214) and moves synchronously with the connecting seat (214).

3. The wastewater treatment device for wood pulp white cardboard processing according to claim 2, characterized in that: The scraper (200) is also equipped with a frame (220) and a support (230). The frame (220) is fixedly connected to the connecting seat (214). The support (230) is installed in the hollow area of ​​the frame (220) in a reciprocating rotation. The surface of the frame (220) near the flotation tank (100) is provided with an opening. The scraper (200) extends into the frame (220) through the opening and is fixedly connected to the support (230).

4. The wastewater treatment device for wood pulp white cardboard processing according to claim 3, characterized in that: The scraper (200) is also equipped with a power assembly (240), which includes a rack (241), a gear (242), a screw (243), a screw sleeve (244), and a connecting rod (245). The rack (241) is fixedly installed on the inner wall of the flotation tank (100). The gear (242) is rotatably installed in the hollow area of ​​the support cylinder (220) and close to the end of the support cylinder (220). When the scraper (200) moves the scum, the gear (242) meshes with the rack (241) to make the gear (242) rotate. The screw (243) and the support (230) are on the same axis. The shaft is connected, and the threaded sleeve (244) is threaded on the screw (243). When the threaded sleeve (244) slides along the axis of the screw (243), it will drive the screw (243) to rotate. One end of the connecting rod (245) is rotatably connected to the end of the threaded sleeve (244), and the other end is rotatably connected to the surface of the gear (242). When the gear (242) rotates, it will drive the end of the connecting rod (245) connected to it to move. When the end of the connecting rod (245) near the gear (242) is driven by the gear (242), it will drive the threaded sleeve (244) to slide back and forth along the axis of the screw (243).

5. The wastewater treatment device for wood pulp white cardboard processing according to claim 4, characterized in that: The scraper (200) is also equipped with an air blowing assembly (250), which is fixedly installed on the surface of the frame (220), and the swaying of the scraper (200) will drive the air blowing assembly (250) to operate to blow air onto the surface of the scraper (200) in contact with the scum.

6. The wastewater treatment device for wood pulp white cardboard processing according to claim 5, characterized in that: The air blowing assembly (250) includes an air blowing hood (251), a fixed plate (252), and a movable plate (253). The air blowing hood (251) is fixedly installed on the surface of the frame (220), and the air outlet of the air blowing hood (251) faces the surface of the scraper (200) that contacts the scum. The fixed plate (252) is fixedly installed inside the frame (220), and the movable plate (253) is fixedly installed on the bracket (230). The fixed plate (252), the movable plate (253), and the bracket (230) are all connected together. The working chamber is formed by the inner wall of the frame (220) and the frame (254). The working chamber is provided with an air inlet (254) and an air outlet (255). The surface of the frame (220) is provided with a ventilation hole (256). The air inlet (254) and the ventilation hole (256) are connected. The working chamber can only draw in air through the air inlet (254) and the ventilation hole (256). The air outlet (255) is connected to the air blowing hood (251). The air in the working chamber can only flow out from the air outlet (255).

7. The wastewater treatment device for wood pulp white cardboard processing according to claim 6, characterized in that: The bracket (230) rotates, causing the movable plate (253) to rotate away from the fixed plate (252), which increases the working chamber and allows air to be drawn into the working chamber through the air inlet (254) and the air outlet (256). The bracket (230) drives the movable plate (253) to move closer to the fixed plate (252), which reduces the working chamber and allows the air in the working chamber to be discharged through the air outlet (255).

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