Dehydration device based on papermaking process

Abstract

The invention belongs to the technical field of papermaking wastewater treatment, and particularly relates to a dewatering device based on a papermaking process. A solid-phase feed opening and a liquid-phase feed opening are respectively formed in two sides of the dewatering cylinder; a support frame is fixedly connected to the outer wall of the middle part of the dewatering cylinder; a first base is fixedly connected to the bottom end of the supporting frame. Through an efficient solid-liquid separation technology, papermaking sludge is dewatered and convenient to recycle, the problem of traditional sludge treatment is effectively solved, the sludge enters the rotary drum, centrifugal force generated by high-speed rotation throws the sludge to the inner wall of the rotary drum to form a filter cake layer, and the sludge is pushed to a solid-phase discharge port to be discharged through the spiral conveyor. Meanwhile, waste water is thrown out to a liquid phase discharging opening, solid-liquid separation is achieved, the air flushing plate regularly cleans blockage of the solid phase discharging opening through the strong blowing effect of the pneumatic assembly, the scraping plate is combined with the rotary drum to rotate, sludge attached to the inner wall of the rotary drum is reduced, and the continuous and stable dewatering efficiency is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of papermaking wastewater treatment, and specifically relates to a dehydration device based on the papermaking process. Background Art

[0002] Dehydration technology is widely used in various industrial productions, such as textile, papermaking, chemical industry, and food. During the papermaking process, a large amount of wastewater sludge is generated. The main components of the sludge are residual pulp, calcium carbonate powder, kaolin powder, modified starch and other impurities. Dehydrating the wastewater sludge generated from papermaking is also an important link.

[0003] A patent application with the publication number CN113754232A discloses a sludge dehydration device for papermaking mill wastewater treatment, including a box body and a dehydration tank. The box body and the dehydration tank are connected by bolts. A heating cavity is arranged between the box body and the dehydration tank. A heater is fixed on the inner wall of the heating cavity. An inlet and an outlet are respectively opened at both ends of the outer wall on one side of the heating cavity. This application can reduce the adhesion of sludge on the conveyor belt and at the same time reduce the long-term wear of the surface of the conveyor belt by the scraper.

[0004] When dehydrating the wastewater sludge generated from papermaking, although the above-mentioned dehydration device can reduce the adhesion of sludge on the conveyor belt, during the dehydration process, the wastewater can be discharged smoothly, while the sludge has adhesiveness, resulting in part of the sludge still adhering to the sludge discharge port of the dehydration device, thus easily causing blockage of the sludge discharge port and affecting the discharging at the sludge discharge port.

[0005] Therefore, the present invention provides a dehydration device based on the papermaking process. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A dehydration device based on a papermaking process according to the present invention includes a dehydration cylinder; solid-phase discharge ports and liquid-phase discharge ports are respectively arranged on both sides of the dehydration cylinder; a support frame is fixedly connected to the outer wall of the middle part of the dehydration cylinder; a first base is fixedly connected to the bottom end of the support frame; a second base is arranged on the side of the first base; a first servo motor is fixedly connected to the top end of the second base; a differential is fixedly connected to the output end of the first servo motor; a rotating drum is rotatably connected inside the dehydration cylinder, and one end of the rotating drum is fixedly connected to the differential; a plurality of solid-phase discharge holes are formed in the outer wall of one end of the rotating drum close to the solid-phase discharge port; an air injection plate is arranged on the rotating drum close to the solid-phase discharge holes, and both sides of the air injection plate are inclined; a pneumatic assembly is arranged on the first base, and the pneumatic assembly is used to drive the air injection plate to process sludge at the plurality of solid-phase discharge holes; a matching assembly is arranged inside the rotating drum, and the matching assembly is used to assist in dehydrating papermaking sludge.

[0008] Preferably, the matching assembly includes a screw feeder, a feed inlet, a feed pipe and screw blades; the screw feeder is fixedly connected to the differential, and the screw feeder is located inside the rotating drum; a plurality of the feed inlets are formed in the middle position of the screw feeder; the feed pipe is fixedly connected to one end of the screw feeder away from the differential, and the feed pipe can communicate with the plurality of feed inlets; the screw blades are fixedly connected to the outer wall of the screw feeder.

[0009] Preferably, the pneumatic assembly includes an air pump, a first air pipe and a gas guide plate; the air pump is fixedly connected to the first base; the first air pipe is fixedly connected to an output end of the air pump; the gas guide plate is fixedly connected to the dehydration cylinder, and the first air pipe can communicate with the air injection plate through the gas guide plate; a liquid-phase discharge box is fixedly connected to the outer wall of the dehydration cylinder close to the liquid-phase discharge port.

[0010] Preferably, a scraping plate is fixedly connected to the outer wall of the rotating drum; the scraping plate is located at the solid-phase discharge port of the dehydration cylinder, and the scraping plate can scrape by fitting the inner wall of the dehydration cylinder.

[0011] Preferably, a second servo motor is fixedly connected to the bottom end of the dehydration cylinder close to the solid-phase discharge port; a four-hole plate is fixedly connected to the bottom end of the second servo motor; a single-hole plate is fixedly connected to the first base, and the single-hole plate is in contact with the four-hole plate.

[0012] Preferably, a sliding rod is slidably connected to the inner wall of the bottom end of the dehydration cylinder through a first elastic member; a pressing plate is fixedly connected to the bottom end of the sliding rod, and the pressing plate corresponds to the holes of the four-hole plate; a second air pipe is fixedly connected to an output end of the air pump; a third air pipe is fixedly connected to the second air pipe, and the third air pipe communicates between the inner wall of the dehydration cylinder and the sliding rod.

[0013] Preferably, a solenoid valve is fixedly connected to the third air pipe; a fourth air pipe is fixedly connected to the solenoid valve; one end of the fourth air pipe away from the solenoid valve is fixedly connected to an air guide block, and the air guide block is located at the solid-phase blanking port; a plurality of air pipes are fixedly connected to the bottom end of the air guide block, and the air pipes can be communicated with the fourth air pipe through the air guide block; a pneumatic stirrer is fixedly connected to the bottom end of the air guide block; a plurality of stirring blades are fixedly connected to the output end of the pneumatic stirrer.

[0014] Preferably, two filter plates are fixedly connected to the top end of the single-hole plate; a storage tank is formed inside the single-hole plate, and the storage tank is communicated with the two filter plates.

[0015] Preferably, a top plate is slidably connected inside the single-hole plate; a plurality of second elastic members are fixedly connected between the inner wall of the single-hole plate and the top plate; a pressure sensor is fixedly connected inside the single-hole plate and near the lower side of the top plate, and the pressure sensor is electrically connected to the second servo motor.

[0016] Preferably, a fixing plate is fixedly connected to the bottom end of the single-hole plate; a storage plate is inserted into the fixing plate; a handle is fixedly connected to the outer wall of the storage plate.

[0017] The beneficial effects of the present invention are as follows: 1. For the dehydration device based on the papermaking process of the present invention, through an efficient solid-liquid separation technology, the dehydration of papermaking sludge is realized and it is convenient for recycling, effectively solving the problems of traditional sludge treatment. The dehydration device enables the sludge to enter the drum, and the centrifugal force generated by the high-speed rotation throws the sludge towards the inner wall of the drum to form a filter cake layer. The spiral feeder pushes the sludge towards the solid-phase discharge port for discharge, and at the same time, the wastewater is thrown out to the liquid-phase discharge port to achieve solid-liquid separation. The air blowing plate regularly clears the blockage of the solid-phase discharge holes through the strong blowing action of the pneumatic component, and the scraper rotates in combination with the drum to reduce the adhesion of sludge on the inner wall of the drum, ensuring a continuous and stable dehydration efficiency.

[0018] 2. For the dehydration device based on the papermaking process of the present invention, the quantitative feeding of sludge is realized through the cooperation of the four-hole plate, the single-hole plate and the second servo motor, and it is equipped with a pressing plate and a pneumatic stirrer to shape and dry the sludge, improving the shaping effect of the sludge. The two filter plates can filter the moisture of the sludge, facilitating subsequent dehydration. The top plate and the pressure sensor realize the weighing and shaping of the sludge, and finally, the formed sludge cake is recycled through the fixing plate and the storage plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a perspective view of the present invention; Figure 2 is a partial structural cross-sectional view of the dehydration cylinder in the present invention; Figure 3It is a schematic structural diagram of the air inflation plate in the present invention; Figure 4 It is a schematic structural diagram of the solenoid valve in the present invention; Figure 5 It is a schematic structural diagram of the air guide block in the present invention; Figure 6 It is a schematic structural diagram of the four-hole plate in the present invention; Figure 7 It is a schematic structural diagram of the storage tank in the present invention.

[0021] In the figure: 1. dehydration cylinder; 11. support frame; 12. first base; 13. second base; 14. first servo motor; 15. drum; 16. solid-phase discharge hole; 17. air inflation plate; 2. screw conveyor; 21. feed inlet; 22. feed pipe; 23. screw blade; 3. air pump; 31. first air pipe; 32. air guide plate; 33. liquid-phase blanking box; 4. scraper; 5. second servo motor; 51. four-hole plate; 52. single-hole plate; 6. sliding rod; 61. pressing plate; 62. second air pipe; 63. third air pipe; 7. solenoid valve; 71. fourth air pipe; 72. air guide block; 73. air duct; 74. pneumatic stirrer; 75. stirring blade; 8. filter plate; 81. storage tank; 9. top plate; 91. second elastic member; 92. pressure sensor; 93. fixing plate; 94. storage plate; 95. handle. Specific embodiments

[0022] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0023] Such as Figures 1 to 4As shown in the figure, a dehydration device based on a papermaking process according to an embodiment of the present invention includes a dehydration cylinder 1; a solid-phase feeding port and a liquid-phase feeding port are respectively arranged on both sides of the dehydration cylinder 1; a support frame 11 is fixedly connected to the outer wall of the middle part of the dehydration cylinder 1; a first base 12 is fixedly connected to the bottom end of the support frame 11; a second base 13 is arranged on the side of the first base 12; a first servo motor 14 is fixedly connected to the top end of the second base 13; a differential is fixedly connected to the output end of the first servo motor 14; a rotating drum 15 is rotatably connected to the inside of the dehydration cylinder 1, and one end of the rotating drum 15 is fixedly connected to the differential; a plurality of solid-phase discharge holes 16 are formed in the outer wall of one end of the rotating drum 15 close to the solid-phase feeding port; an air injection plate 17 is arranged on the rotating drum 15 close to the solid-phase discharge holes 16, and both sides of the air injection plate 17 are inclined; a pneumatic component is arranged on the first base 12, and the pneumatic component is used to drive the air injection plate 17 to process sludge at a plurality of solid-phase discharge holes 16; a matching component is arranged inside the rotating drum 15, and the matching component is used to assist in dehydrating papermaking sludge; when dehydrating the waste water sludge generated by papermaking, the first base 12 cooperates with the support frame 11 and the second base 13 to support both sides and the middle part of the dehydration cylinder 1, the mixed waste water sludge is pumped into the inside of the rotating drum 15 through the matching component, and as the output end of the first servo motor 14 drives the rotating drum 15 and the matching component connected to the differential to rotate, under the action of the centrifugal force generated by high-speed rotation, the sludge in the mixture, due to its large density, is thrown towards the inner wall of the rotating drum 15 and gradually accumulates to form a filter cake layer. As the matching component pushes the sludge to be transported to a plurality of solid-phase discharge holes 16, the sludge is thrown out of the rotating drum 15 through the plurality of solid-phase discharge holes 16 as the rotating drum 15 rotates at a high speed, and the sludge is discharged from the solid-phase feeding port, while the waste water, due to its small density, is thrown out of the rotating drum 15 from the liquid-phase feeding port on the side of the rotating drum 15 close to the differential under the action of the centrifugal force, so as to realize solid-liquid separation. At the same time, due to the long-term operation of the dehydration device, part of the sludge will adhere to the inner wall of a plurality of solid-phase discharge holes 16 and the outer wall of the rotating drum 15 close to the solid-phase discharge holes 16. The pneumatic component is used to pump air into the air injection plate 17, and when the bottom end of the air injection plate 17 is corresponding to the solid-phase discharge holes 16, it blows strongly, and the sludge adhering to the inner wall of the solid-phase discharge holes 16 is blown off respectively, so as to clean the inner wall of a plurality of solid-phase discharge holes 16. The inclined surfaces on both sides of the air injection plate 17 can cooperate with a scraper when the rotating drum 15 rotates to scrape off the sludge adhering to the outer wall of the rotating drum 15, and the probability of sludge blockage can be reduced.

[0024] As Figures 1 to 3As shown in the figure, the matching component includes a spiral feeder 2, a feed inlet 21, a feed pipe 22, and a spiral blade 23; the spiral feeder 2 is fixedly connected to the differential, and the spiral feeder 2 is located inside the drum 15; a plurality of the feed inlets 21 are opened at the middle position of the spiral feeder 2; the feed pipe 22 is fixedly connected to one end of the spiral feeder 2 away from the differential, and the feed pipe 22 can communicate with a plurality of the feed inlets 21; the spiral blade 23 is fixedly connected to the outer wall of the spiral feeder 2; when dehydrating wastewater sludge, the mixed wastewater sludge is pumped in through the feed pipe 22, and the wastewater sludge enters the inside of the spiral feeder 2. With the high-speed rotation of the drum 15, when the wastewater sludge reaches a plurality of the feed inlets 21, it is thrown into the inside of the drum 15. The spiral feeder 2 and the drum 15 are respectively connected to the differential, and the rotation speed of the drum 15 is faster than that of the spiral feeder 2. The wastewater and sludge are separated by the action of centrifugal force. The spiral blade 23 then pushes the separated sludge to a plurality of solid-phase discharge holes 16 for external discharge as the spiral feeder 2 rotates, playing a role in separating the solid and liquid of the wastewater sludge.

[0025] As Figures 1 to 4 shown, the pneumatic component includes an air pump 3, a first air pipe 31, and a gas guide plate 32; the air pump 3 is fixedly connected to the first base 12; the first air pipe 31 is fixedly connected to an output end of the air pump 3; the gas guide plate 32 is fixedly connected to the dewatering cylinder 1, and the first air pipe 31 can communicate with an air injection plate 17 through the gas guide plate 32; a liquid-phase discharge box 33 is fixedly connected to the outer wall of the dewatering cylinder 1 near the liquid-phase discharge port; when sludge adheres to the outer wall of the drum 15 at a plurality of the solid-phase discharge holes 16 and at the solid-phase discharge holes 16, the air pump 3 is used to supply air. The gas is pumped into the air injection plate 17 through the first air pipe 31 and the gas guide plate 32 and is discharged from the bottom of the air injection plate 17. When the air holes at the bottom of the air injection plate 17 correspond to each solid-phase discharge hole 16, the discharged high-strength gas flushes the inner wall of the solid-phase discharge hole 16, reducing the sludge adhesion on the inner wall of a plurality of the solid-phase discharge holes 16 and reducing the occurrence of blockage caused by sludge. The liquid-phase discharge box 33 is fixed at the liquid-phase discharge port and is used to guide the discharged wastewater for discharge.

[0026] A scraper 4 is fixedly connected to the outer wall of the drum 15; the scraper 4 is located at the solid-phase discharge port of the dewatering cylinder 1, and the scraper 4 can scrape while fitting the inner wall of the dewatering cylinder 1; when the drum 15 rotates at a high speed and a large amount of sludge is thrown out from a plurality of the solid-phase discharge holes 16, part of the sludge adheres to the inner wall of the dewatering cylinder 1. The scraper 4 is fixed to the outer wall of the drum 15, and the scraper 4 fits the inner wall of the dewatering cylinder 1. The scraper 4 scrapes the inner wall of the dewatering cylinder 1 as the drum 15 rotates, reducing the sludge adhesion on the inner wall of the dewatering cylinder 1.

[0027] As Figures 1 to 3 、 Figure 6 and Figure 7As shown, a second servo motor 5 is fixedly connected to the bottom end of the dehydration cylinder 1 near the solid-phase feeding port; a four-hole plate 51 is fixedly connected to the bottom end of the second servo motor 5; a single-hole plate 52 is fixedly connected to the first base 12, and the single-hole plate 52 is in contact with the four-hole plate 51; when discharging sludge, the sludge is discharged from the solid-phase feeding port of the dehydration cylinder 1, the sludge falls into a hole groove of the four-hole plate 51 and is placed on the single-hole plate 52. When the sludge in the hole groove is stored to a set amount, the output end of the second servo motor 5 drives the four-hole plate 51 to rotate, and the four-hole plate 51 sweeps the stored sludge away, so that the next empty hole groove is located below the solid-phase feeding port to continue receiving materials. Until the hole groove with materials reaches the corresponding position of the hole groove of the single-hole plate 52, the sludge in the hole groove is discharged, which plays a role in quantitatively discharging the sludge.

[0028] As Figures 1 to 4 As shown, a sliding rod 6 is slidably connected to the inner wall of the bottom end of the dehydration cylinder 1 through a first elastic member; a pressing plate 61 is fixedly connected to the bottom end of the sliding rod 6, and the pressing plate 61 corresponds to the holes of the four-hole plate 51; an output end of the air pump 3 is fixedly connected to a second air pipe 62; a third air pipe 63 is fixedly connected to the second air pipe 62, and the third air pipe 63 communicates between the inner wall of the dehydration cylinder 1 and the sliding rod 6; when quantitatively discharging sludge, a large amount of pulp in the sludge can be recycled. The sludge is discharged into a hole groove of the four-hole plate 51. After the sludge amount reaches the set amount, the output end of the second servo motor 5 drives the stored sludge to be transferred to the position below the pressing plate 61. The air pump 3 works to supply air into the second air pipe 62, and then it is sent to the space between the inner wall of the dehydration cylinder 1 and the sliding rod 6 through the third air pipe 63. The gas presses the sliding rod 6 to slide down, the first elastic member stretches, and the pressing plate 61 at the bottom end of the sliding rod 6 squeezes the sludge in the hole groove of the four-hole plate 51 below at this time, pressing the loose sludge into a cake shape. When the cake-shaped sludge turns to the hole groove of the single-hole plate 52 and falls, it plays a role in forming the loose sludge for easy recycling.

[0029] As Figures 1 to 5As shown, a solenoid valve 7 is fixedly connected to the third air pipe 63; a fourth air pipe 71 is fixedly connected to the solenoid valve 7; one end of the fourth air pipe 71 away from the solenoid valve 7 is fixedly connected to an air guide block 72, and the air guide block 72 is located at the solid-phase feeding port; a plurality of air pipes 73 are fixedly connected to the bottom end of the air guide block 72, and the air pipes 73 can be communicated with the fourth air pipe 71 through the air guide block 72; a pneumatic stirrer 74 is fixedly connected to the bottom end of the air guide block 72; a plurality of stirring blades 75 are fixedly connected to the output end of the pneumatic stirrer 74; when the sludge is discharged and fed from a plurality of solid-phase discharge holes 16, the solenoid valve 7 is used to control the opening at the fourth air pipe 71, so that the gas supplied by the air pump 3 enters the interior of the fourth air pipe 71. After the gas enters the air guide block 72, it is divided. Part of the gas enters the pneumatic stirrer 74, driving a plurality of stirring blades 75 fixed on its output end to rotate. The plurality of stirring blades 75 can disperse the sludge falling at the solid-phase feeding port, and cooperate with part of the gas discharged from a plurality of air pipes 73 to be air-dried, improving the forming effect of the dehydrated sludge. At the same time, when a plurality of air pipes 73 blow air at the solid-phase feeding port, it can reduce the adhesion of the sludge on the inner wall of the solid-phase feeding port.

[0030] As Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, two filter plates 8 are fixedly connected to the top end of the single-hole plate 52; a storage tank 81 is formed inside the single-hole plate 52, and the storage tank 81 is communicated with the two filter plates 8; when part of the sludge has a small amount of moisture, the two filter plates 8 are fixed on the single-hole plate 52, and the two filter plates 8 are installed away from the solid-phase feeding port and the hole slots of the single-hole plate 52. When the four-hole plate 51 transfers the falling and collected sludge to the filter plate 8, the moisture in the sludge is filtered through the filter plate 8, and the moisture is fed and stored in the storage tank 81. To ensure the forming effect of the sludge, the two filter plates 8 can also be installed as one filter plate 8 to play a role in draining water from the sludge.

[0031] A top plate 9 is slidably connected inside the single-hole plate 52; a plurality of second elastic members 91 are fixedly connected between the inner wall of the single-hole plate 52 and the top plate 9; a pressure sensor 92 is fixedly connected inside the single-hole plate 52 and near the lower side of the top plate 9, and the pressure sensor 92 is electrically connected to the second servo motor 5; when the sludge is fed from the solid-phase feeding port, the sludge falls on the top plate 9. As the gravity of the continuously increasing sludge presses down, the plurality of second elastic members 91 at the bottom of the top plate 9 contract until the top plate 9 presses down to trigger the pressure sensor 92. At this time, the sludge received on the top plate 9 has reached the forming amount, and the top plate 9 is already flush with the top surface of the single-hole plate 52. After the pressure sensor 92 is subjected to pressure, it sends a signal to the total controller, and the total controller sends a signal to the second servo motor 5, so that the output end of the second servo motor 5 drives the four-hole plate 51 to transfer the sludge until it is formed, playing a role in weighing and forming the sludge.

[0032] A fixed plate 93 is fixedly connected to the bottom end of the single-hole plate 52; a storage plate 94 is inserted into the fixed plate 93; a handle 95 is fixedly connected to the outer wall of the storage plate 94; when collecting the formed sludge, the fixed plate 93 is fixed at the bottom of the single-hole plate 52 as a partial guiding shield, the storage plate 94 is inserted into the fixed plate 93, and the fixed plate 93 and the storage plate 94 form a receiving cylinder. When the formed sludge cake falls into the receiving cylinder for temporary storage when the hole grooves of the four-hole plate 51 and the hole grooves of the single-hole plate 52 correspond, when too much sludge cake is collected in the receiving cylinder, the handle 95 is pulled to pull out the storage plate 94, and the received sludge cake can be collected, playing a role in recycling the sludge cake.

[0033] Working process: When dehydrating the wastewater sludge generated in papermaking, the first base 12 cooperates with the support frame 11 and the second base 13 to support the two sides and the middle of the dehydration cylinder 1. The mixed wastewater sludge is pumped into the inside of the drum 15 through the cooperation component. As the output end of the first servo motor 14 drives the drum 15 and the cooperation component connected by the differential to rotate, under the action of the centrifugal force generated by the high-speed rotation, the sludge in the mixture, due to its greater density, is thrown towards the inner wall of the drum 15 and gradually accumulates to form a filter cake layer. As the cooperation component pushes the sludge and transports it to multiple solid-phase discharge holes 16, the sludge is thrown out of the drum 15 through the multiple solid-phase discharge holes 16 as the drum 15 rotates at a high speed, and the sludge is discharged from the solid-phase discharge port, while the wastewater, due to its smaller density, is thrown out of the drum 15 through the liquid-phase discharge port on the side of the drum 15 close to the differential under the action of the centrifugal force, thus realizing solid-liquid separation. At the same time, due to the long-term operation of the dehydration device, some sludge will adhere to the inner walls of the multiple solid-phase discharge holes 16 and the outer wall of the drum 15 near the solid-phase discharge holes 16. The pneumatic component is used to pump air into the air injection plate 17, and when the bottom end of the air injection plate 17 corresponds to the solid-phase discharge holes 16, it blows strongly, blowing off the sludge adhering to the inner walls of the solid-phase discharge holes 16 respectively, realizing the cleaning of the inner walls of the multiple solid-phase discharge holes 16. The inclined surfaces on both sides of the air injection plate 17 can cooperate with the scraping shovel when the drum 15 rotates, scraping off the sludge adhering to the outer wall of the drum 15, which can reduce the probability of sludge blockage; when dehydrating the wastewater sludge, the mixed wastewater sludge is pumped in through the feed pipe 22. The wastewater sludge enters the inside of the spiral feeder 2. As the drum 15 rotates at a high speed, when the wastewater sludge reaches multiple feed ports 21, it is thrown into the inside of the drum 15. The spiral feeder 2 and the drum 15 are respectively connected to the differential, and the rotation speed of the drum 15 is faster than that of the spiral feeder 2. The centrifugal force is used to separate the wastewater and sludge into solid and liquid phases. The spiral blade 23 then pushes the separated sludge to multiple solid-phase discharge holes 16 for external discharge as the spiral feeder 2 rotates, playing a role in solid-liquid separation of the wastewater sludge. When there is sludge adhering to the outer wall of the drum 15 at multiple solid-phase discharge holes 16 and the solid-phase discharge holes 16, the air pump 3 is operated to supply air. The gas is pumped into the air injection plate 17 through the first air pipe 31 and the air guide plate 32, and discharged from the bottom of the air injection plate 17. When the air holes at the bottom of the air injection plate 17 correspond to each solid-phase discharge hole 16, the high-strength gas discharged scours the inner wall of the solid-phase discharge hole 16, reducing the sludge adhesion on the inner walls of the multiple solid-phase discharge holes 16 and reducing the occurrence of blockage caused by sludge. The liquid-phase feeding box 33 is fixed at the liquid-phase feeding port and is used to guide and discharge the separated wastewater; when quantitatively feeding the sludge, a large amount of pulp in the sludge can be recycled. The sludge is fed into a hole groove of the four-hole plate 51. After the sludge volume reaches the set amount, the output end of the second servo motor 5 drives the stored sludge to be transferred to the position below the pressing plate 61. The air pump 3 supplies air into the second air pipe 62, and then to the inner wall of the dehydration cylinder 1 and between the sliding rods 6 through the third air pipe 63. The gas presses the sliding rod 6 to slide down, stretching the first elastic member. The pressing plate 61 at the bottom of the sliding rod 6 squeezes the sludge in the hole groove of the four-hole plate 51 below at this time, pressing the loose sludge into a cake shape. When the cake-shaped sludge turns to the hole groove of the single-hole plate 52 and falls, it plays a role in forming the loose sludge for easy recycling; when the sludge is thrown out and fed from multiple solid-phase discharge holes 16, the solenoid valve 7 is used to control the opening at the fourth air pipe 71, so that the gas supplied by the operation of the air pump 3 enters the inside of the fourth air pipe 71. After the gas enters the air guide block 72, it is divided. Part of the gas enters the pneumatic stirrer 74, driving the rotation of the multiple stirring blades 75 fixed on its output end. The multiple stirring blades 75 can disperse the sludge falling at the solid-phase feeding port, and cooperate with part of the gas discharged from the multiple air pipes 73 to dry, improving the forming effect of the dehydrated sludge. At the same time, the multiple air pipes 73 blow air at the solid-phase feeding port, which can reduce the adhesion of sludge on the inner wall of the solid-phase feeding port; When the drum 15 rotates at a high speed and a large amount of sludge is thrown out from multiple solid-phase discharge holes 16, part of the sludge adheres to the inner wall of the dehydration cylinder 1. The scraper 4 is fixed on the outer wall of the drum 15, and the scraper 4 fits the inner wall of the dehydration cylinder 1. The scraper 4 scrapes the inner wall of the dehydration cylinder 1 as the drum 15 rotates, reducing the sludge adhesion on the inner wall of the dehydration cylinder 1; When discharging sludge, the sludge is discharged from the solid-phase discharge port of the dehydration cylinder 1. The sludge falls into one of the orifice grooves of the four-hole plate 51 and is placed on the single-hole plate 52. When the sludge in the orifice groove is stored to the set amount, the output end of the second servo motor 5 drives the four-hole plate 51 to rotate. The four-hole plate 51 sweeps the stored sludge away, so that the next empty orifice groove is located below the solid-phase discharge port to continue receiving the material. Until the orifice groove with the material reaches the corresponding position of the orifice groove of the single-hole plate 52, the sludge in the orifice groove is discharged, which plays a role in quantitatively discharging the sludge. When some sludge contains a small amount of moisture, two filter plates 8 are fixed on the single-hole plate 52. The two filter plates 8 are installed away from the solid-phase discharge port and the orifice groove of the single-hole plate 52. When the four-hole plate 51 transfers the falling and collected sludge to the filter plate 8, the moisture in the sludge is filtered from the filter plate 8, and the moisture is discharged and stored in the storage tank 81. To ensure the forming effect of the sludge, the two filter plates 8 can also be installed as one filter plate 8, which plays a role in draining the sludge. When the sludge is discharged from the solid-phase discharge port, the sludge falls on the top plate 9. As the gravity of the continuously increasing sludge presses down, the multiple second elastic members 91 at the bottom of the top plate 9 contract until the top plate 9 presses down to trigger the pressure sensor 92. At this time, the sludge received on the top plate 9 has reached the forming amount, and the top plate 9 is already flush with the top surface of the single-hole plate 52. After the pressure sensor 92 is pressurized, it sends a signal to the total controller, and the total controller sends a signal to the second servo motor 5, so that the output end of the second servo motor 5 drives the four-hole plate 51 to transfer the sludge until it is formed, which plays a role in weighing and forming the sludge. When collecting the formed sludge, the fixing plate 93 is fixed at the bottom of the single-hole plate 52 as a partial guiding shield. The storage plate 94 is inserted into the fixing plate 93. The fixing plate 93 and the storage plate 94 form a receiving cylinder. When the orifice groove of the four-hole plate 51 corresponds to the orifice groove of the single-hole plate 52, the formed sludge cake falls into the receiving cylinder for temporary storage. When too much sludge cake is collected in the receiving cylinder, pull the handle 95 to pull out the storage plate 94, and the received sludge cake can be collected, which plays a role in recycling the sludge cake.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A dehydration device based on a papermaking process, characterized in that: It includes a dehydration cylinder (1); a solid-phase discharge port and a liquid-phase discharge port are respectively arranged on both sides of the dehydration cylinder (1); a support frame (11) is fixedly connected to the outer wall of the middle part of the dehydration cylinder (1); a first base (12) is fixedly connected to the bottom end of the support frame (11); a second base (13) is arranged on the side of the first base (12); a first servo motor (14) is fixedly connected to the top end of the second base (13); a differential is fixedly connected to the output end of the first servo motor (14); a drum (15) is rotatably connected inside the dehydration cylinder (1), and one end of the drum (15) is fixedly connected to the differential; a plurality of solid-phase discharge holes (16) are formed in the outer wall of one end of the drum (15) close to the solid-phase discharge port; an air injection plate (17) is arranged on the drum (15) close to the solid-phase discharge holes (16), and both sides of the air injection plate (17) are inclined; a pneumatic assembly is arranged on the first base (12), and the pneumatic assembly is used to drive the air injection plate (17) to treat the sludge at the plurality of solid-phase discharge holes (16); a matching assembly is arranged inside the drum (15), and the matching assembly is used to assist in dehydrating the papermaking sludge.

2. The dehydration device based on the papermaking process according to claim 1, characterized in that: The matching assembly includes a screw feeder (2), a feed inlet (21), a feed pipe (22) and screw blades (23); the screw feeder (2) is fixedly connected to the differential, and the screw feeder (2) is located inside the drum (15); a plurality of the feed inlets (21) are formed in the middle position of the screw feeder (2); the feed pipe (22) is fixedly connected to one end of the screw feeder (2) away from the differential, and the feed pipe (22) can be communicated with the plurality of feed inlets (21); the screw blades (23) are fixedly connected to the outer wall of the screw feeder (2).

3. The dehydration device based on the papermaking process according to claim 1, characterized in that: The pneumatic assembly includes an air pump (3), a first air pipe (31) and an air guide plate (32); the air pump (3) is fixedly connected to the first base (12); the first air pipe (31) is fixedly connected to an output end of the air pump (3); the air guide plate (32) is fixedly connected to the dehydration cylinder (1), and the first air pipe (31) can be communicated with the air injection plate (17) through the air guide plate (32); a liquid-phase discharge box (33) is fixedly connected to the outer wall of the dehydration cylinder (1) close to the liquid-phase discharge port.

4. A dehydration device based on a papermaking process according to claim 1, characterized in that: A scraper (4) is fixedly connected to the outer wall of the drum (15); the scraper (4) is located at the solid-phase discharge port of the dehydration cylinder (1), and the scraper (4) can scrape by fitting the inner wall of the dehydration cylinder (1).

5. The dehydration device based on the papermaking process according to claim 1, characterized in that: A second servo motor (5) is fixedly connected to the bottom end of the dehydration cylinder (1) close to the solid-phase discharge port; a four-hole plate (51) is fixedly connected to the bottom end of the second servo motor (5); a single-hole plate (52) is fixedly connected to the first base (12), and the single-hole plate (52) is attached to the four-hole plate (51).

6. The dehydration device based on the papermaking process according to claim 3, characterized in that: The inner wall of the bottom end of the dehydration cylinder (1) is slidably connected with a sliding rod (6) through a first elastic member; the bottom end of the sliding rod (6) is fixedly connected with a pressing plate (61), and the pressing plate (61) corresponds to the holes of the four-hole plate (51); one output end of the air pump (3) is fixedly connected with a second air pipe (62); a third air pipe (63) is fixedly connected to the second air pipe (62), and the third air pipe (63) communicates between the inner wall of the dehydration cylinder (1) and the sliding rod (6).

7. The dehydration device based on the papermaking process according to claim 6, characterized in that: A solenoid valve (7) is fixedly connected to the third air pipe (63); a fourth air pipe (71) is fixedly connected to the solenoid valve (7); one end of the fourth air pipe (71) far from the solenoid valve (7) is fixedly connected with a gas guide block (72), and the gas guide block (72) is located at the solid-phase feeding port; a plurality of air pipes (73) are fixedly connected to the bottom end of the gas guide block (72), and the air pipes (73) can be communicated with the fourth air pipe (71) through the gas guide block (72); a pneumatic stirrer (74) is fixedly connected to the bottom end of the gas guide block (72); a plurality of stirring blades (75) are fixedly connected to the output end of the pneumatic stirrer (74).

8. An dehydration device based on papermaking process according to claim 5, characterized in that: Two filter plates (8) are fixedly connected to the top end of the single-hole plate (52); a storage groove (81) is formed inside the single-hole plate (52), and the storage groove (81) communicates with the two filter plates (8).

9. The dehydration device based on the papermaking process according to claim 5, characterized in that: A top plate (9) is slidably connected inside the single-hole plate (52); a plurality of second elastic members (91) are fixedly connected between the inner wall of the single-hole plate (52) and the top plate (9); a pressure sensor (92) is fixedly connected inside the single-hole plate (52) and below the top plate (9), and the pressure sensor (92) is electrically connected to the second servo motor (5).

10. A dehydration device based on a papermaking process according to claim 5, characterized in that: A fixing plate (93) is fixedly connected to the bottom end of the single-hole plate (52); a storage plate (94) is inserted into the fixing plate (93); a handle (95) is fixedly connected to the outer wall of the storage plate (94).

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