A sewage treatment device for colored paper production

Abstract

The present application relates to the technical field of sewage treatment and discloses a sewage treatment device for colored paper production. The device introduces the gas in the gas transmission pipe into a U-shaped cavity through a three-way cavity, a first air guide pipe and a second air guide pipe in sequence, and sprays the gas outward through a small nozzle. On the one hand, this arrangement can change the single air pipe gas outlet mode into a U-shaped gas outlet mode, which not only increases the gas outlet area but also enhances the gas outlet effect. On the other hand, in conjunction with the back-and-forth reciprocating movement of the U-shaped frame, a comprehensive and uniform gas outlet effect can be achieved on the bottom of the purification box. The tiny bubbles generated can provide uniform bubbles for lightweight particles randomly scattered in the purification box, causing them to adhere and rise. At the same time, fixed-point gas outlet at different positions can also be achieved. Compared with the traditional single gas outlet mode, the device can achieve a more comprehensive and uniform gas outlet effect with a smaller gas outlet volume, thereby improving the flotation efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to a sewage treatment device for colored paper production. Background Art

[0002] The production process of colored paper on the market uses a large amount of pure water. After participating in various processes of colored paper production, this pure water becomes sewage and is discharged. However, the sewage discharged from the colored paper production process contains a large amount of pollutants, including floating objects, organic matter, inorganic matter, various acidic and alkaline toxic substances, and even other impurities such as mud and plastic skin. These impurities need to undergo graded treatment and other targeted purification treatments before they can be discharged into the natural environment.

[0003] Sewage generally requires pretreatment before discharge, that is, using a screen or grille to remove large particles of solid matter and fiber fragments in the wastewater to protect subsequent treatment equipment from damage and reduce the treatment load. Then, through sedimentation and flotation, heavy suspended particles are settled, and light particles attach to the bubbles and float to the water surface, thereby removing most of the suspended solids. Among them, when the sewage water body is precipitated and flotated, whether the tiny bubbles generated in the air pipe can rise evenly in the sewage treatment tank and during the flotation process, the sedimentation rate of the sediment after being affected by the rising bubbles during the sedimentation process has always been an important factor affecting the efficiency of the sedimentation and flotation process.

[0004] When the existing wastewater treatment equipment for colored paper production performs sedimentation flotation treatment, the air pipe structure leading to the sewage treatment tank is too simple, and it is impossible to achieve a uniform and comprehensive flotation effect in the sewage tank. As a result, the lightweight particles randomly distributed in the sewage treatment tank cannot attach to the bubbles and float to the water surface in large quantities, resulting in poor flotation effect. Summary of the Invention

[0005] The present application proposes a wastewater treatment device for colored paper production, which has the function of changing a single air pipe outlet mode into a U-shaped air outlet mode, which not only increases the air outlet area but also enhances the air outlet effect. On the other hand, in conjunction with the back-and-forth reciprocating movement of the U-shaped frame, it can achieve a comprehensive and uniform air outlet effect on the bottom of the purification box. The tiny bubbles generated can provide uniform bubbles for the lightweight particles randomly scattered in the purification box, causing them to adhere and rise. At the same time, it can also achieve the advantage of fixed-point air outlet at different positions, so as to solve the problem that the existing wastewater treatment device for colored paper production cannot achieve a uniform and comprehensive flotation effect in the sewage tank during sedimentation flotation treatment due to the overly simple air pipe structure leading to the sewage treatment tank. As a result, the lightweight particles randomly distributed in the sewage treatment tank cannot adhere to the bubbles in large quantities and float to the water surface, resulting in poor flotation effect.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solution: a sewage treatment device for colored paper production, comprising a purification box connected to an external water inlet pipe, a cover for isolating sediment materials fixedly installed near the bottom of the inner wall of the purification box, a motor is installed on the outer wall of the purification box above the cover, the two ends of the threaded rod are respectively rotatably connected to the two sides of the inner wall of the purification box, and one end is fixedly connected to the output shaft of the motor, a strip transmission frame is provided through the threaded rod and is threadedly connected to the strip transmission frame, and U-shaped frames are installed at both ends of the strip transmission frame , and both ends of the U-shaped frame are slidably connected to the inner wall of the purification box, a U-shaped cavity adapted to its contour is opened in the U-shaped frame, and a plurality of air outlet holes connected to the outside are opened on the inner wall of the U-shaped cavity, one end of the two air pipes is connected to the external aeration equipment, and the other end passes through the purification box and the two ends of the top of the U-shaped frame respectively, and is fixedly installed in the purification box, a plurality of first air guide holes distributed in an array are opened at the bottom of the inner cavity of the air pipe, and second air guide holes adapted to the first air guide holes are opened on the top of the inner cavity at both ends of the U-shaped cavity, and the second air guide holes are connected to the U-shaped cavity.

[0007] A piston block is slidably arranged in each of the first air guide holes, and the bottom end of the piston block is fixedly connected to a hemispherical block for squeezing and pushing the piston block. The top of the piston block and the top of the inner cavity of the air pipe are fixedly connected to a first spring. A three-way cavity is jointly opened in the piston block and the hemispherical block, and the bottom end of the three-way cavity is on the same vertical line as the first air guide hole and the second air guide hole.

[0008] A sealing ring adapted to the piston block is embedded in the first air guide hole.

[0009] The maximum rising distance of the piston block is adapted to the distances between the left and right ends of the three-way cavity and the first air guide hole.

[0010] Small nozzles for improving the air outlet effect are embedded in the multiple exhaust holes opened on the inner wall of the U-shaped cavity.

[0011] A limiting slide groove parallel to the strip transmission frame is provided in the purification box, and protrusions extending into the limiting slide groove are provided on the outer walls at both ends of the U-shaped frame, and the protrusions are slidably connected with the limiting slide groove.

[0012] The cover plate is provided with a plurality of strip-shaped through slots, and a rotating plate is rotatably connected in the strip-shaped through slots. The rotating plate is in an inverted V shape and is made of a magnetic material.

[0013] A magnetic strip having the same magnetic properties as the rotating plate is fixedly installed at the bottom of the U-shaped frame, and a strip-shaped cleaning brush for cleaning sediment is fixedly connected to the bottom of the magnetic strip.

[0014] The bottom of the magnetic strip is fixedly connected with a strip baffle for preventing sediment from quickly rising after being cleaned by the strip cleaning brush, and the inner angle of the strip baffle is an obtuse angle.

[0015] A blocking rod is provided between the two ends of the bottom of the rotating plate, and a second spring is fixedly connected to the blocking rod and the inner walls at both ends of the rotating plate.

[0016] The beneficial effects of the present invention are as follows:

[0017] The U-shaped air filter is a kind of air filter that is used to filter the air in the air filter, and the U-shaped air filter is a kind of air filter that is used to filter the air in the air filter. It can also realize fixed-point air outlet at different positions. Compared with the traditional single air outlet method, the device can achieve a more comprehensive and uniform air outlet effect with a smaller air outlet volume, thereby improving the flotation efficiency. In addition, a rotatable rotating plate is set between the cover plates, and the principle of mutual repulsion between the magnetic strips and the rotating plate is used to make the rotating plate deflect and shake left and right. Combined with the back and forth movement of the strip cleaning brush, the flocculent sedimentation material mixed with the coagulant can be swept under the cover plate for isolation, avoiding the tiny bubbles ejected from the air pipe from rolling up the originally descending sedimentation material, thereby reducing the sedimentation efficiency. The device solves the problem that the existing sewage treatment device for colored paper production cannot achieve a uniform and comprehensive flotation effect in the sewage tank during sedimentation flotation treatment due to the overly simple structure of the air pipe leading to the sewage treatment tank. As a result, the lightweight particles randomly distributed in the sewage treatment tank cannot attach to the bubbles in large quantities and float to the water surface, resulting in poor flotation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only embodiments of the present invention. Those skilled in the art can also derive other drawings based on the provided drawings without inventive work.

[0019] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0020] Figure 2 This is a schematic diagram of a half-section structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure inside the purification box of the present invention;

[0022] Figure 4 This is a schematic structural diagram of the threaded rod, U-shaped frame and gas pipe in the present invention;

[0023] Figure 5 Schematic diagram of the cross-sectional structure of the end portion of the gas transmission pipe in the present invention;

[0024] Figure 6 Schematic diagram of the cross-sectional structure of the connection between the end of the gas transmission pipe and the U-shaped pipe in the present invention;

[0025] Figure 7 It is a structural schematic diagram of the cover plate and the rotating plate in the present invention.

[0026] In the figure: 1. processing box; 2. cover plate; 201. rotating plate; 202. magnetic strip; 203. strip cleaning brush; 204. strip baffle; 205. baffle rod; 206. second spring; 3. motor; 301. threaded rod; 302. strip transmission frame; 303. U-shaped frame; 304. air supply pipe; 305. limiting slide groove; 306. U-shaped cavity; 307. first air guide hole; 308. second air guide hole; 309. piston block; 310. hemispherical block; 311. three-way cavity; 312. first spring; 313. sealing ring; 314. small nozzle. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0028] Please refer to Figures 1-6As shown, when the device is in use, first, sewage is discharged into the purification box 1 through the external water inlet pipe. The sewage entering the purification box 1 uses a coagulant to make the suspended solids and organic matter in the wastewater form flocs and settle down. Then, the external aeration device is turned on, and one end is connected to it, and the other end passes through the air pipe 304 fixedly connected to the purification box 1 to discharge gas into the purification box 1 to generate a large number of tiny bubbles. Using the principle of flotation, light particles are attached to the bubbles and float to the water surface, thereby removing most of the suspended solids. In this process, the motor 3 fixedly installed on the outer wall of the purification box 1 is started to make The output shaft drives the threaded rod 301 fixedly connected to it to rotate. Since the threaded rod 301 is rotatably connected to the inner wall of the purification box 1 and is connected to the strip transmission frame 302 by a through-thread method, and the two ends of the strip transmission frame 302 are fixedly connected to the U-shaped frame 303, and since the two ends of the U-shaped frame 303 are slidably connected to the inner wall of the purification box 1, the U-shaped frame 303 provides a stable support effect for the strip transmission frame 302 under the sliding limit of the inner wall of the purification box 1. At this time, when the threaded rod 301 rotates, it will drive the strip transmission frame 302 to move back and forth stably, so that The movement of the noodle-shaped transmission frame 302 can stir the sewage water body, make the added coagulant more evenly distributed, increase the rate of combination of the coagulant with the suspended solids and organic matter in the sewage water body, and thus accelerate the formation of flocs and precipitation. On the other hand, it can drive the U-shaped frame 303 to move back and forth synchronously, increase the contact area with the water body, further enhance the stirring effect, and through the multiple first air guide holes 307 opened in the air pipe 304 and the second air guide holes 308 opened at the top of the two ends of the U-shaped frame 303 to adapt to it, the gas in the air pipe 304 is introduced into the U-shaped frame 303. In the U-shaped cavity 306, the gas is finally discharged through a plurality of exhaust holes connected to the outside world opened on the inner wall of the U-shaped cavity 306. With the reciprocating movement of the U-shaped frame 303 and the rotation control of the motor 3, uniform aeration of the bottom of the sewage and a fixed-point aeration effect with freely adjustable position can be achieved. Under this effect, the light particles randomly dispersed in the sewage will attach to the bubbles to the maximum extent and float to the water surface, greatly improving the uniform floating effect of the light particles and the floating efficiency of the light particles, and avoiding the problem that the light particles in some areas of the purification box 1 cannot float quickly due to uneven aeration.

[0029] Furthermore, by means of the piston block 309 slidably connected in the first air guide hole 307 and the first spring 312 and the hemispherical block 310 fixedly connected at the upper and lower ends of the piston block 309, when the U-shaped frame 303 moves, since they are limited sliding with each other, the movement of the U-shaped frame 303 will squeeze the hemispherical block 310 to move upward. During this period, since the hemispherical block 310 is in the shape of a hemisphere, it can better accept the thrust of the U-shaped frame 303, thereby pushing the piston block 309 to slide upward in the first air guide hole 307, reducing the movement resistance of the U-shaped frame 303, reducing the friction loss on the surface of the related structure, and improving the stability of the U-shaped frame 303. The smooth effect during movement, when the piston block 309 slides upward, it squeezes the first spring 312 which is fixedly connected to the top of the inner cavity of the gas pipe 304 at the other end, causing it to compress and deform. When the piston block 309 moves to the highest position, the left and right ends of the top of the three-way cavity 311 opened in the piston block 309 and the hemispherical block 310 will be completely exposed to the inner cavity of the gas pipe 304. At this time, the gas introduced into the gas pipe 304 by the external aeration equipment will enter the piston block 309 and the hemispherical block 310 through the three-way cavity 311, and the bottom of the three-way cavity 311 will be in the same vertical line as the first air guide hole 307 and the second air guide hole 308. The air is then introduced into the second air guide hole 308 through the first air guide hole 307. Since the second air guide hole 308 is connected to the U-shaped cavity 306, the gas finally enters the U-shaped cavity 306 and is discharged through a plurality of exhaust holes connected to the outside world on the inner wall of the U-shaped cavity 306, thereby changing the gas discharge position and direction, so that the gas can be discharged evenly over a larger area. When the U-shaped frame 303 is affected by the rotation of the threaded rod 301 and moves back and forth, the exhaust hole will evenly aerate the light particles randomly distributed at the bottom of the purification box 1, causing them to attach to the tiny bubbles and float upward. On the contrary, when the U-shaped frame 303 is detached, the light particles are evenly aerated. When leaving the hemispherical block 310, under the elastic reset of the first spring 312, the piston block 309 and the hemispherical block 310 move downward, and finally the left and right ends of the top of the three-way cavity 311 on the piston block 309 will completely cover the first air guide hole 307, and form a seal with the cooperation of the first air guide hole 307 and the sealing ring 313 embedded in the first air guide hole 307, and the bottom of the hemispherical block 310 will extend out of the first air guide hole 307 again, so as to be convenient for receiving the next squeezing and achieve the effect of reuse. The sealing of the three-way cavity 311 can save the aeration volume of the aeration equipment and cover a larger aeration area with a smaller aeration volume.

[0030] It is worth noting that a small nozzle 314 is embedded in each exhaust hole. The setting of the small nozzle 314 can prevent water from flowing back into the U-shaped cavity 306 and improve the bubbling effect when the gas is ejected from the exhaust hole.

[0031] In addition, the limiting sliding connection between the limiting sliding groove 305 provided on the purification box 1 and the U-shaped frame 303 can further enhance the stability of the U-shaped frame 303 during the reciprocating movement. Example 2

[0032] Further supplements are made based on Example 1, please refer to Figure 3-Figure 7 As shown, the cover plate 2 is provided with a plurality of strip-shaped through-slots, and the plurality of strip-shaped through-slots are rotatably connected to a rotating plate 201, and the two ends of the rotating plate 201 are adapted to the width of the strip-shaped through-slots, which facilitates the falling of sediment and prevents the sediment from being rolled up again by the flow of water when the U-shaped frame 303 moves, thereby achieving the effect of isolating the sediment. Moreover, because the rotating plate 201 is made of magnetic material, and the bottom of the U-shaped frame 303 is fixedly connected to a magnetic strip 202 with the same magnetism as the rotating plate 201, when the U-shaped frame 303 moves above the inclined surface of the rotating plate 201, the same magnetic repulsive force between the magnetic strip 202 and the rotating plate 201 will push the rotating plate 201 to deflect by a certain angle, thereby increasing the inclination angle of the adjacent side, accelerating the sliding of the sediment, and causing it to fall to the bottom of the rotating plate 201 and the cover plate 2. The U-shaped frame 303 is isolated and prevents the sediment from being rolled up again under the influence of the water flow driven by the movement of the U-shaped frame 303. As the magnetic strip 202 moves, the left and right inclined surfaces of the rotating plate 201 will deflect and shake respectively, accelerating the sediment attached to the inclined surface of the rotating plate 201 to fall off. When the rotating plate 201 is deflected by the magnetic repulsive force of the magnetic strip 202, the baffle 205 fixedly connected to the inner wall of the purification box 1 is fixedly connected because it is located in the middle of the corner and the second springs 206 are fixedly connected to the inner wall of the corner of the rotating plate 201 on both sides. The two second springs 206 will be compressed and elastically reset respectively, thereby extending the deflection and shaking time and frequency of the rotating plate 201, thereby enhancing the effect of shaking off the sediment, and at the same time avoiding the problem that the rotating plate 201 cannot be reset when deflected for a long time.

[0033] It is worth noting that a strip cleaning brush 203 is fixedly connected to the bottom of the magnetic strip 202 and is in contact with the upper surface of the cover plate 2 and the rotating plate 201, so that when the U-shaped frame 303 drives the magnetic strip 202 to move, the scraping action of the strip cleaning brush 203 can further accelerate the sediment to fall under the cover plate 2 and be isolated. The strip baffle 204, which is also fixedly connected to the bottom of the U-shaped frame 303, has an obtuse inner wall angle. When the sediment is scraped, it can block and cover the sediment rolled up by the water flow, so that it cannot be quickly rolled into the water body above, reducing the rate at which the sediment is rolled up and diffused, and enhancing the effect of the sediment being swept under the cover plate 2.

[0034] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wastewater treatment device for colored paper production, characterized in that: include: A purification box (1) connected to an external water inlet pipe, wherein a cover plate (2) for isolating sediment is fixedly mounted on the inner wall of the purification box (1) near the bottom, and a motor (3) is mounted on the outer wall of the purification box (1) above the cover plate (2); A threaded rod (301), wherein both ends of the threaded rod (301) are rotatably connected to both sides of the inner wall of the purification box (1), and one end is fixedly connected to the output shaft of the motor (3); a strip transmission frame (302) is provided through the threaded rod (301) and is threadedly connected to the strip transmission frame (302); a U-shaped frame (303) is installed at both ends of the strip transmission frame (302), and both ends of the U-shaped frame (303) are slidably connected to the inner wall of the purification box (1); a U-shaped cavity (306) adapted to the contour of the U-shaped cavity (303) is provided in the U-shaped frame (303), and a plurality of air outlet holes connected to the outside are provided on the inner wall of the U-shaped cavity (306); Two air delivery pipes (304), one end of each of the two air delivery pipes (304) is connected to an external aeration device, and the other end thereof passes through the purification box (1) and the top ends of the U-shaped frame (303), and is fixedly installed in the purification box (1); a plurality of first air guide holes (307) distributed in an array are provided at the bottom of the inner cavity of the air delivery pipe (304); second air guide holes (308) adapted to the first air guide holes (307) are provided at the top of the inner cavity at both ends of the U-shaped cavity (306), and the second air guide holes (308) are connected to the U-shaped cavity (306); The cover plate (2) is provided with a plurality of strip-shaped through slots, and a rotating plate (201) is rotatably connected in the strip-shaped through slots. The rotating plate (201) is in an inverted V shape and is made of a magnetic material. A magnetic strip (202) having the same magnetic properties as the rotating plate (201) is fixedly mounted on the bottom of the U-shaped frame (303), and a strip-shaped cleaning brush (203) for cleaning sediment is fixedly connected to the bottom of the magnetic strip (202); A strip baffle (204) is fixedly connected to the bottom of the magnetic strip (202) for preventing sediment from rapidly rising after being cleaned by the strip cleaning brush (203), and the inner angle of the strip baffle (204) is an obtuse angle; A blocking rod (205) is provided between the two ends of the bottom of the rotating plate (201), and a second spring (206) is fixedly connected between the blocking rod (205) and the inner walls at both ends of the rotating plate (201).

2. A colored paper production wastewater treatment device according to claim 1, characterized in that: A piston block (309) is slidably arranged in each of the first air guide holes (307), and the bottom end of the piston block (309) is fixedly connected to a hemispherical block (310) for squeezing and pushing the piston block (309). The top end of the piston block (309) and the top of the inner cavity of the gas pipe (304) are fixedly connected to a first spring (312). The piston block (309) and the hemispherical block (310) are jointly provided with a three-way cavity (311), and the bottom end of the three-way cavity (311) is on the same vertical line as the first air guide hole (307) and the second air guide hole (308).

3. A colored paper production wastewater treatment device according to claim 2, characterized in that: A sealing ring (313) adapted to the piston block (309) is embedded in the first air guide hole (307).

4. A wastewater treatment device for colored paper production according to claim 3, characterized in that: The maximum rising distance of the piston block (309) matches the distance between the left and right ends of the three-way cavity (311) and the first air guide hole (307).

5. The wastewater treatment device for colored paper production according to claim 1, characterized in that: Small nozzles (314) for improving the gas outlet effect are embedded in the multiple gas outlet holes formed on the inner wall of the U-shaped cavity (306).

6. The wastewater treatment device for colored paper production according to claim 1, characterized in that: A limiting slide groove (305) parallel to the strip transmission frame (302) is provided in the purification box (1), and protrusions extending into the limiting slide groove (305) are provided on the outer walls of both ends of the U-shaped frame (303), and the protrusions are slidably connected to the limiting slide groove (305).

Images