Treatment device for paper mill sludge

Abstract

The utility model relates to a kind of paper mill paper mill sludge's processing device, it is characterized by including inlet hopper, solid filter screen, stirring mechanism, gate machine, filter mechanism, processing mechanism, the solid filter screen is installed in the inlet hopper inside, the inlet hopper is connected with filter screen by buckle, the inlet hopper below is equipped with stirring mechanism, the stirring mechanism below is equipped with gate machine, the gate machine below is equipped with filter mechanism, the filter mechanism below is equipped with processing mechanism, the utility model increases these components and can effectively improve the treatment efficiency of paper mill sludge wastewater, realize multistage separation and purification.Stirring mechanism is driven by motor to stir blade to waste material is fully agitated, prevent jam;Filter mechanism combines impurity filter screen and activated carbon, cooperate with dosing machine to add coagulant, accelerate sludge settlement and remove suspended solids and harmful substances, improve water purification effect, the processing mechanism increased then through motor drive push rod and screen mesh cooperative operation, realize solid-liquid efficient separation.

Description

Technical Field

[0001] This utility model relates to the field of papermaking production technology, and in particular to a device for treating papermaking sludge from paper mills. Background Technology

[0002] Paper mill sludge, a byproduct of wastewater treatment, contains large amounts of fiber, lignin, heavy metals, and organic pollutants. Its complex composition and high water content make it susceptible to environmental problems such as soil and groundwater pollution and odor spread if directly landfilled or improperly disposed of. Traditional treatment methods, such as simple landfilling, not only consume land resources but also generate greenhouse gases from the decomposition of organic matter, exacerbating carbon emission pressures. Incineration, on the other hand, faces challenges of high energy consumption and significant secondary pollution risks. With increasingly stringent environmental regulations and rising demands for resource utilization, developing efficient and low-energy-consumption sludge treatment technologies has become an urgent industry need, aiming to achieve a synergistic goal of sludge reduction, harmlessness, and resource recovery.

[0003] Existing application number CN202221109685.X proposes a treatment device for papermaking sludge, including a dewatering machine. The dewatering machine has a sludge outlet on one side wall and a drain outlet on the other side wall. A mounting frame is located at the bottom of the dewatering machine, and a collection trough for collecting the sludge output from the outlet is provided on the surface of the mounting frame. A sludge treatment mechanism is installed inside the collection trough. The sludge treatment mechanism includes a cylinder, a pusher plate, a mold chamber, an electric push rod, a discharge plate, and a water collection trough. The cylinder is located on one side wall of the collection trough, and its output end passes through the collection trough and is fixedly connected to the pusher plate. The mold chamber is located inside the collection trough, and one side wall of the mold chamber is designed to fit the opening of the pusher plate. However, the existing technology has difficulty effectively separating impurities during sludge treatment, leading to limited subsequent resource utilization. Furthermore, the separation efficiency between wastewater and sludge is low, easily causing blockage of the drain outlet and affecting continuous operation. Utility Model Content

[0004] In view of the above technical problems, this utility model provides a treatment device for papermaking sludge in paper mills, characterized in that it includes a feeding hopper, a solid filter screen, a stirring mechanism, a gate machine, a filtering mechanism, and a treatment mechanism. The feeding hopper is equipped with a solid filter screen, and the feeding hopper and the filter screen are connected by a snap fastener. A stirring mechanism is installed below the feeding hopper, a gate machine is installed below the stirring mechanism, a filtering mechanism is installed below the gate machine, and a treatment mechanism is installed below the filtering mechanism. The mixing mechanism consists of a mixing tank, a mixing shaft, a mounting shaft, a connecting shaft, a rotating shaft, mixing blades, a motor, a feed inlet, and a discharge outlet. The connecting shaft is installed inside the mixing tank, and multiple mounting shafts, mixing shafts, rotating shafts, and mixing blades are mounted on the connecting shaft. The rotating shaft is mounted on the side of the mounting shaft, and a mixing shaft is mounted on the side of the rotating shaft. Multiple mixing blades are mounted on the rotating shaft, and the rotating shaft and mixing blades are connected by bolts and nuts. The motor is mounted on the side of the mixing tank and is connected to the connecting shaft, thereby driving the rotating shaft to rotate the mixing blades. A feed inlet is opened at the top of the mixing tank, and a discharge outlet is opened at the bottom of the mixing tank. The filtration mechanism consists of a filter box, an impurity filter screen, a conveying pipe, a suction fan, an exhaust port, a collection bag, activated carbon, and a dosing machine. The impurity filter screen is installed inside the filter box, and an exhaust port is opened on the side of the filter box. A suction fan is installed on the exhaust port and connected to a collection bag. A dosing machine is installed on the side of the filter box. The dosing machine adds polyaluminum chloride as a coagulant to make the papermaking sludge settle quickly. Activated carbon is installed inside the filter box, and an outlet is opened at the bottom of the filter box. A conveying pipe is installed at the outlet. The processing mechanism consists of a mounting frame, mounting blocks, connecting plates, screens, push rods, motors, electric telescopic rods, a processing box, a coupling, a ramp, an output pipe, and a water collection tank. Mounting blocks are mounted on the side of the mounting frame, connecting it to the filtration mechanism. A connecting plate is mounted on the side of the mounting frame, and a processing box is mounted on the side of the connecting plate. A screen is installed inside the processing box, and an electric telescopic rod is installed inside the processing box. A push rod is mounted on the side of the electric telescopic rod, and a ramp is installed below the push rod. A connection port is located at the bottom of the processing box, and an output pipe is installed at the connection port. A water collection tank is located below the output pipe. A motor and a coupling are mounted on the side of the processing box, connecting the motor to the electric telescopic rod. The motor drives the electric telescopic rod to extend and retract through the coupling.

[0005] The beneficial effects of this utility model are as follows: This invention adds a stirring mechanism, a filtration mechanism, and a treatment mechanism to the original design. These additions effectively improve the treatment efficiency of papermaking sludge wastewater, achieving multi-stage separation and purification. The stirring mechanism uses an electric motor to drive the stirring blades, thoroughly agitating the waste material to prevent clogging. The filtration mechanism combines an impurity filter screen with activated carbon, and works in conjunction with a dosing machine to add coagulants, accelerating sludge settling and removing suspended solids and harmful substances, thus improving water purification. The added treatment mechanism uses an electric motor to drive a push rod, which works in conjunction with a screen to achieve efficient solid-liquid separation.

[0006] The newly added stirring mechanism of this utility model consists of a stirring box, a stirring shaft, a mounting shaft, a connecting shaft, a rotating shaft, stirring blades, a motor, a feed inlet, and a discharge outlet. The added stirring shaft and rotating shaft are linked through the connecting shaft and powered by the motor, ensuring that the waste generated during papermaking is mixed evenly during the stirring process, improving stirring efficiency and reaction sufficiency, avoiding local sedimentation or clumping, and making subsequent filtration smoother.

[0007] The newly added filtration mechanism of this utility model consists of a filter box, an impurity filter screen, a conveying pipe, a suction fan, an exhaust port, a collection bag, activated carbon, and a dosing machine. Through a combination of multi-layer filtration and chemical treatment, it accelerates the settling speed of sludge. The impurity filter screen intercepts large particles of impurities, the activated carbon adsorbs organic matter and odors, the dosing machine quantitatively adds coagulant to promote the flocculation and settling of fine particles, and the suction fan draws in waste gas through the exhaust port and guides it into the collection bag to prevent secondary pollution.

[0008] The newly added processing mechanism of this utility model consists of a mounting frame, mounting block, connecting plate, screen, push rod, motor, electric telescopic rod, processing box, coupling, inclined platform, output pipe, and water collection tank. The processing mechanism drives the electric telescopic rod through the motor-driven coupling, which in turn drives the push rod to reciprocate. This causes the waste material generated by the paper mill on the screen to achieve solid-liquid separation under the action of vibration and inclination. The liquid is filtered by the screen and flows into the water collection tank through the output pipe, while the sludge slides down the inclined platform for centralized treatment, effectively improving the processing efficiency and automation level. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of the paper mill sludge treatment device of this utility model; Figure 2 This is a diagram of the stirring mechanism of the paper mill sludge treatment device of this utility model; Figure 3 This is a partial schematic diagram of the paper mill sludge treatment device of this utility model; Figure 4 This is a diagram of the filtration mechanism of the paper mill sludge treatment device of this utility model; Figure 5 This is a schematic diagram of the treatment mechanism of the paper mill sludge treatment device of this utility model; Figure 6 This is a partial schematic diagram of the paper mill sludge treatment device of this utility model; Figure 7 This is a partial schematic diagram of the paper mill sludge treatment device of this utility model; Figure 8 This is a partial schematic diagram of the paper mill sludge treatment device of this utility model; 1-Mixing tank, 2-Mixing shaft, 3-Mounting shaft, 4-Connecting shaft, 5-Rotating shaft, 6-Mixing blade, 7-Motor, 8-Inlet, 9-Outlet, 10-Filter box, 11-Impurity filter screen, 12-Conveying pipe, 13-Suction fan, 14-Exhaust port, 15-Collection bag, 16-Activated carbon, 17-Dosing machine, 18-Mounting frame, 19-Mounting block, 20-Connecting plate, 21-Screen, 22-Push rod, 23-Motor, 24-Electric telescopic rod, 25-Processing box, 26-Inclined platform, 27-Outlet pipe, 28-Water collection tank, 29-Inlet hopper, 30-Solid filter screen, 31-Gate machine. Detailed Implementation Example 1

[0010] This utility model provides a treatment device for paper mill sludge, characterized in that it includes a connecting shaft 4 installed inside a mixing tank 1, on which multiple mounting shafts 3, a mixing shaft 2, a rotating shaft 5, and mixing blades 6 are mounted. A rotating shaft 5 is mounted on the side of the mounting shaft 3, and a mixing shaft 2 is mounted on the side of the rotating shaft 5. Multiple mixing blades 6 are mounted on the rotating shaft 5, and the rotating shaft 5 and mixing blades 6 are connected by bolts and nuts. A motor 7 is mounted on the side of the mixing tank 1, and the motor 7 is connected to the connecting shaft 4, thereby driving the rotating shaft 5 to rotate the mixing blades 6. An inlet 8 is opened at the top of the mixing tank 1, and an outlet 9 is opened at the bottom of the mixing tank 1. An impurity filter screen 11 is installed inside the filter tank 10. An exhaust port 14 is opened on the side of the filter tank 10, and a suction fan 13 is mounted on the exhaust port 14. The suction fan 13 is connected to a collection bag 15. A collection bag 15 is also installed on the side of the filter tank 10. The dosing machine 17 uses polyaluminum chloride as a coagulant to rapidly settle papermaking sludge. Activated carbon 16 is installed inside the filter box 10, and a conveying pipe 12 is installed below the filter box 10. An mounting block 19 is installed on the side of the mounting frame 18, connecting the mounting frame 18 to the filtration mechanism via the mounting block 19. A connecting plate 20 is installed on the side of the mounting frame 18, and a processing box 25 is installed on the side of the connecting plate 20. A screen 21 is installed inside the processing box 25, and an electric telescopic rod 24 is installed inside the processing box 25. A push rod 22 is installed on the side of the electric telescopic rod 24, and a ramp 26 is installed below the push rod 22. An output pipe 27 is installed below the processing box 25, and a water collection tank 28 is located below the output pipe 27. A motor 23 is installed on the side of the processing box 25. A solid filter screen 30 is installed inside the feed hopper 29, and a gate machine 31 is installed below the mixing tank 1. Example 2

[0011] When using this utility model, the papermaking sludge is first introduced into the mixing tank 1 through the feed hopper 29. During the introduction process, the papermaking sludge is first filtered through the solid filter screen 30 inside the feed hopper 29 to intercept large particles of impurities. Then the sludge falls into the mixing tank 1. The motor 7 drives the connecting shaft 4 to drive the stirring blade 6 on the rotating shaft 5 to rotate, so as to fully stir the sludge to break the clump structure and make it evenly dispersed. After the sludge has been stirred for a period of time, the operator opens the gate valve 31, allowing the stirred sludge to enter the filter box 10 of the filtration mechanism through the discharge port 9. The papermaking sludge produced by the paper mill further traps particles through the impurity filter screen 11, blocking the trapped particles on the screen. At the same time, polyaluminum chloride is added to the filter box 10 through the dosing machine 8, allowing it to fully mix and react with the sludge, promoting the flocculation and sedimentation of suspended solids. Then, the suction fan 12 is turned on to create negative pressure in the filter box 10, accelerating the downward flow of liquid through the impurity filter screen 11. Odors are discharged through the exhaust port 13 into the collection bag 15, while solid impurities are... The liquid and sludge trapped in the filter box 10 are discharged into the treatment box 25 through the conveying pipe 12 after the activated carbon layer adsorbs harmful substances. After entering the treatment box 25, the solid and liquid are further separated under the secondary filtration of the screen 26. At the same time, the motor 27 is turned on, and the motor drives the electric telescopic rod 24 through the coupling. The electric telescopic rod 24 pushes the push rod 22 to drive the push rod to reciprocate, pushing the solid sludge accumulated on the screen 21 to the inclined platform 26 for easy centralized discharge. At the same time, the liquid flows into the water collection tank 28 through the output pipe, realizing the efficient separation and treatment of sludge. The whole process has a high degree of automation, stable operation, and effectively improves the efficiency of sewage treatment. After treatment, the operator can recycle the clean water in the water collection tank 28 or discharge it in compliance with standards, while the solid sludge on the screen 21 slides down the inclined platform 26 to the collection device to realize resource utilization. Furthermore, the impurities on the solid filter screen 30 on the feed hopper 29 can be cleaned regularly to avoid clogging and affecting the feeding efficiency. At the same time, the impurity filter screen 11 in the filter box 10 can also be disassembled and replaced to ensure the long-term efficient operation of the equipment.

[0012] This invention, by adding these components, can effectively improve the treatment efficiency of papermaking sludge wastewater, achieving multi-stage separation and purification. The stirring mechanism uses an electric motor to drive the stirring blades to fully agitate the waste material, preventing clogging; the filtration mechanism combines an impurity filter screen and activated carbon, with a dosing machine adding coagulant to accelerate sludge settling and remove suspended solids and harmful substances, improving water purification; the added treatment mechanism uses an electric motor to drive a push rod and a screen to work together to achieve efficient solid-liquid separation.

[0013] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A treatment device for paper mill sludge, characterized in that... It includes a feeding hopper, a solid filter screen, a stirring mechanism, a gate machine, a filtering mechanism, and a processing mechanism. The feeding hopper is equipped with a solid filter screen, and the feeding hopper and the filter screen are connected by a snap-fit. A stirring mechanism is installed below the feeding hopper, a gate machine is installed below the stirring mechanism, a filtering mechanism is installed below the gate machine, and a processing mechanism is installed below the filtering mechanism.

2. The paper mill sludge treatment device according to claim 1, characterized in that... The mixing mechanism consists of a mixing tank, a mixing shaft, a mounting shaft, a connecting shaft, a rotating shaft, mixing blades, a motor, a feed inlet, and a discharge outlet. The connecting shaft is installed inside the mixing tank, and multiple mounting shafts, mixing shafts, rotating shafts, and mixing blades are mounted on the connecting shaft. The rotating shaft is mounted on the side of the mounting shaft, and the mixing shaft is mounted on the side of the rotating shaft. Multiple mixing blades are mounted on the rotating shaft. The rotating shaft and the mixing blades are connected by bolts and nuts. The motor is mounted on the side of the mixing tank and is connected to the connecting shaft, thereby driving the rotating shaft to rotate the mixing blades. A feed inlet is opened at the top of the mixing tank, and a discharge outlet is opened at the bottom of the mixing tank.

3. The paper mill sludge treatment device according to claim 1, characterized in that... The filtration system consists of a filter box, an impurity filter screen, a conveying pipe, a suction fan, an exhaust port, a collection bag, activated carbon, and a dosing machine. The filter box contains an impurity filter screen, and an exhaust port is located on the side of the filter box. A suction fan is installed on the exhaust port and connected to a collection bag. The dosing machine is located on the side of the filter box. The dosing machine adds polyaluminum chloride as a coagulant to make the papermaking sludge settle quickly. Activated carbon is installed inside the filter box, and an outlet is located at the bottom of the filter box. A conveying pipe is installed at the outlet.

4. The paper mill sludge treatment device according to claim 1, characterized in that... The processing mechanism consists of a mounting frame, mounting blocks, connecting plates, a screen, a push rod, a motor, an electric telescopic rod, a processing box, a coupling, a ramp, an output pipe, and a water collection tank. The mounting frame has mounting blocks mounted on its side, connecting it to the filtration mechanism. A connecting plate is mounted on the side of the mounting frame, and the processing box is mounted on the side of the connecting plate. A screen is installed inside the processing box, and an electric telescopic rod is installed inside the processing box. A push rod is mounted on the side of the electric telescopic rod, and a ramp is installed below the push rod. A connection port is located at the bottom of the processing box, and an output pipe is installed at the connection port. A water collection tank is located below the output pipe. A motor and a coupling are mounted on the side of the processing box, connecting the motor to the electric telescopic rod. The motor drives the electric telescopic rod to extend and retract through the coupling.

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