Sewage treatment device for colored paper production

Abstract

The invention relates to the technical field of sewage treatment, and discloses a sewage treatment device for colored paper production. Gas in a gas conveying pipe is sequentially guided into a U-shaped cavity through a three-way cavity, a first gas guide pipe and a second gas guide pipe and is sprayed outwards through a small spray head; by means of the arrangement, on one hand, a single air pipe air outlet mode can be changed into a U-shaped air outlet mode, the air outlet area is increased, the air outlet effect is enhanced, and on the other hand, through front-back reciprocating movement of the U-shaped frame, the comprehensive and uniform air outlet effect on the bottom of the purification box can be achieved; according to the air flotation device, generated tiny bubbles can provide uniform bubbles for light particles scattered in the purification box randomly, the light particles are made to rise in an attached mode, meanwhile, fixed-point air outlet at different fixed positions can be achieved, compared with a traditional single air outlet mode, the device can achieve the more comprehensive and uniform air outlet effect with the small air outlet amount, and the air flotation efficiency is improved.

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 acid and alkali 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] Generally, sewage needs to be pre-treated before it is discharged. That is, a screen or grid is used to remove large solid particles 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 are attached to the bubbles and float to the water surface, thereby removing most of the suspended solids. 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 precipitated material after being affected by the rising bubbles during the sedimentation process has always been an important reason 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 wastewater treatment tank is too simple, and a uniform and comprehensive flotation effect cannot be achieved in the wastewater tank. As a result, the lightweight particles randomly distributed in the wastewater treatment tank cannot attach to the bubbles in large quantities and float to the water surface, 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 advantages of being able to change a single air pipe outlet mode into a U-shaped outlet mode, which not only increases the outlet area but also enhances the outlet effect, and on the other hand, cooperates with the forward and backward reciprocating movement of the U-shaped frame to achieve a comprehensive and uniform outlet effect on the bottom of the purification box, and the tiny bubbles generated can provide uniform bubbles for lightweight particles randomly scattered in the purification box, causing them to adhere and rise, and at the same time, it can also achieve the advantage of fixed-point outlet at different positions, so as to solve the problem that when the existing wastewater treatment device for colored paper production performs sedimentation flotation treatment, the air pipe structure leading to the sewage treatment box is too simple, and a uniform and comprehensive flotation effect cannot be achieved in the sewage treatment box, resulting in that the lightweight particles randomly distributed in the sewage treatment box cannot be attached to the bubbles in large quantities and float to the water surface, resulting in a poor flotation effect.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a sewage treatment device for colored paper production, comprising a purification box connected to an external water inlet pipe, a cover plate for isolating sediment materials is 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 plate, 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 penetrated 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 ends respectively pass through the purification box and the two ends of the top of the U-shaped frame, and are 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, and the top of the piston block and the top of the inner cavity of the air delivery pipe are jointly fixedly connected with a first spring, and a three-way cavity is jointly provided 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 matched with the piston block is embedded in the first air guide hole.

[0009] The maximum rising distance of the piston block is matched with 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 air outlets formed 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 motor 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] A strip baffle is fixedly connected to the bottom of the magnetic strip to prevent sediment from rising quickly 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 arranged 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: The U-shaped frame is then used to push the hemispherical block upward, thereby compressing the first spring and exposing the left and right ends of the top of the three-way cavity provided in the piston block and the hemispherical block to the air supply pipe, thereby achieving the goal of introducing the gas in the air supply pipe into the U-shaped cavity through the three-way cavity, the first air guide pipe and the second air guide pipe in sequence, and spraying it outward through the small nozzle. On the one hand, this arrangement can change the single air pipe outlet mode into a U-shaped outlet mode, which not only increases the outlet area but also enhances the outlet effect. On the other hand, with the back-and-forth reciprocating movement of the U-shaped frame, the bottom of the purification box can be fully and evenly exhausted. The tiny bubbles generated can provide uniform bubbles for the lightweight particles randomly scattered in the purification box, causing them to adhere and rise. The invention can also realize the fixed-point gas outlet at different positions. Compared with the traditional single gas outlet method, the device can achieve a more comprehensive and uniform gas outlet effect with a smaller gas outlet volume, thereby improving the flotation efficiency. In addition, a rotatable rotating plate is arranged between the cover plates, and the principle of mutual repulsion between the same magnetism of the magnetic strip and the rotating plate is utilized to make the rotating plate deflect and shake left and right. With the back-and-forth reciprocating movement of the strip cleaning brush, the flocculent precipitate mixed with the coagulant can be swept under the cover plate for isolation, thereby preventing the tiny bubbles ejected from the air pipe from re-rolling up the originally descending precipitate, thereby reducing the sedimentation efficiency. The invention 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, resulting in the inability of the lightweight particles randomly distributed in the sewage treatment tank to attach to the bubbles in large quantities and float to the water surface, thereby causing the poor flotation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work: Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of a half-section structure of the present invention; Figure 3 It is a schematic diagram of the structure inside the purification box of the present invention; Figure 4 It is a structural schematic diagram of the threaded rod, U-shaped frame and gas transmission pipe in the present invention; Figure 5 It is a schematic cross-sectional structure diagram of the end of the gas transmission pipe in the present invention; Figure 6 It is a schematic cross-sectional view of the connection between the end of the gas transmission pipe and the U-shaped pipe in the present invention; Figure 7 It is a schematic diagram of the structure of the cover plate and the rotating plate in the present invention.

[0018] 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

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention. Embodiment 1

[0020] Please refer to Figure 1-Figure 6As shown, when the device is in use, firstly, sewage is discharged into the purification box 1 through an external water inlet pipe, and 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 delivery 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, and the light particles attached to the bubbles are driven to float to the water surface by the principle of air flotation, so as to remove 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 thereto to rotate. Since the threaded rod 301 is rotatably connected to the inner wall of the purification box 1, and is threadedly connected to the strip transmission frame 302, 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, 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 introduce the gas in the gas pipe 304 into the gas pipe 304 through the multiple first air guide holes 307 opened in the gas pipe 304 and the second air guide holes 308 opened at the top of the two ends of 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, which greatly improves the uniform floating effect of the light particles and the floating efficiency of the light particles, and avoids the problem that the light particles in some areas of the purification box 1 cannot float quickly due to uneven aeration.

[0021] 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 relevant structure, and improving the U-shaped frame 303. In order to achieve a smooth 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 be compressed and deformed. 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 are 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 is in the same vertical line as the first gas guide hole 307 and the second gas guide hole 308. The gas is introduced into the second gas guide hole 308 through the first gas guide hole 307. Since the second gas 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, so that they are attached to the tiny bubbles and float upward. On the contrary, when the U-shaped frame 303 is detached, the light particles at the bottom of the purification box 1 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, and the sealing of the three-way cavity 311 can save the aeration amount of the aeration equipment and cover a larger aeration area with a smaller aeration amount.

[0022] 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.

[0023] 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. Embodiment 2

[0024] 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 grooves, and the plurality of strip-shaped through grooves are all rotatably connected with a rotating plate 201, and the two ends of the rotating plate 201 are adapted to the width of the strip-shaped through grooves, so that the sediment material can fall conveniently without being affected by the flow of water and rolling up the sediment material again when the U-shaped frame 303 moves, thereby achieving the effect of isolating the sediment material. Moreover, because the rotating plate 201 is made of magnetic material, and the bottom of the U-shaped frame 303 is fixedly connected with a magnetic strip 202 having the same magnetic property 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 at a certain angle, thereby increasing the inclination angle of the adjacent side, accelerating the sliding of the sediment material, and causing it to fall to the bottom of the rotating plate 201 and the cover plate 2. The U-shaped frame 303 is used to isolate 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 inclined surfaces on the left and right sides 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 located in the middle of the angle, and the second springs 206 are fixedly connected to the inner wall of the angle of the rotating plate 201 on both sides, so that 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 shaking-off effect of the sediment, and also avoiding the problem that the rotating plate 201 cannot be reset when it is deflected for a long time.

[0025] It is worth noting that a strip cleaning brush 203 is fixedly connected to the bottom of the magnetic strip 202 and is closely connected to 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.

[0026] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but rather 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 installed on the inner wall of the purification box (1) near the bottom, and a motor (3) is installed on the outer wall of the purification box (1) above the cover plate (2); A threaded rod (301), wherein two ends of the threaded rod (301) are rotatably connected to two 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) matching 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 the two air delivery pipes (304) being connected to an external aeration device, and the other end of the two air delivery pipes (304) respectively passing through the purification box (1) and the two ends of the top of the U-shaped frame (303), and being 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), and 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).

2. A wastewater treatment device for colored paper production according to claim 1, characterized in that: A piston block (309) is slidably disposed in each of the first air guide holes (307); a hemispherical block (310) is fixedly connected to the bottom end of the piston block (309) for squeezing and pushing the piston block (309); a first spring (312) is fixedly connected to the top of the piston block (309) and the top of the inner cavity of the air delivery pipe (304); a three-way cavity (311) is formed in the piston block (309) and the hemispherical block (310); 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 wastewater treatment device for colored paper production 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. A 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. A wastewater treatment device for colored paper production according to claim 1, characterized in that: A limiting slide groove (305) parallel to the strip-shaped 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 at both ends of the U-shaped frame (303), and the protrusions are slidably connected to the limiting slide groove (305).

7. A wastewater treatment device for colored paper production according to claim 1, characterized in that: The motor (3) 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.

8. A wastewater treatment device for colored paper production according to claim 7, characterized in that: 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).

9. A wastewater treatment device for colored paper production according to claim 8, characterized in that: A strip baffle (204) is fixedly connected to the bottom of the magnetic strip (202) and is used to prevent sediment from rapidly rising after being cleaned by the strip cleaning brush (203). The inner angle of the strip baffle (204) is an obtuse angle.

10. A wastewater treatment device for colored paper production according to claim 9, characterized in that: 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).

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