A dewatering device based on a papermaking process

Abstract

The application belongs to the technical field of papermaking wastewater treatment, and particularly relates to a dewatering device based on a papermaking process, which comprises a dewatering cylinder, solid-phase discharge ports and liquid-phase discharge ports are arranged on the two sides of the dewatering cylinder, a support frame is fixedly connected to the outer wall of the middle part of the dewatering cylinder, and a first base is fixedly connected to the bottom end of the support frame. Through efficient solid-liquid separation technology, papermaking sludge dewatering and recycling are realized, and the traditional sludge treatment problem is effectively solved. The dewatering device realizes solid-liquid separation by the following steps: sludge enters a rotating drum, a centrifugal force generated by high-speed rotation of the rotating drum throws the sludge to the inner wall of the rotating drum to form a filter cake layer, a screw feeder pushes the sludge to the solid-phase discharge port for discharge, and wastewater is thrown out to the liquid-phase discharge port at the same time. The air flushing plate periodically cleans the blockage of the solid-phase discharge hole through the strong blowing action of the pneumatic assembly, the scraper reduces the sludge adhesion on the inner wall of the rotating drum by combining with the rotation of the rotating drum, and the continuous and stable dewatering efficiency is ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of papermaking wastewater treatment, and particularly relates to a dewatering device based on a papermaking process. BACKGROUND

[0002] Dewatering technology is widely used in various industrial productions, such as textile, papermaking, chemical industry and food, etc. A large amount of wastewater sludge is produced in the process of papermaking, and the main components of the sludge are residual paper pulp, calcium carbonate powder, porcelain clay powder and modified starch and other impurities. Dewatering of the wastewater sludge produced in papermaking is also an important link.

[0003] A patent application with the publication number CN113754232A discloses a sludge dewatering equipment for wastewater treatment in a paper mill, which comprises a box body and a dewatering tank. The box body and the dewatering tank are connected by bolts. A heating cavity is arranged between the box body and the dewatering tank. The inner wall of the heating cavity is fixed with a heater. The two ends of the outer wall of one side of the heating cavity are respectively provided with an inlet and a discharge port. This application can reduce the adhesion of sludge on the transmission belt and reduce the long-term wear of the surface of the transmission belt by the scraper.

[0004] When dewatering the wastewater sludge produced in papermaking, although the above-mentioned dewatering equipment can reduce the adhesion of sludge on the transmission belt, in the dewatering process, the wastewater can be smoothly discharged, and the sludge has adhesion, so that part of the sludge will still adhere to the sludge discharge port of the dewatering equipment, thereby easily causing the blockage of the sludge discharge port and affecting the discharging at the sludge discharge port.

[0005] Therefore, the application provides a dewatering device based on a papermaking process. SUMMARY

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

[0007] The technical scheme adopted by the present application to solve its technical problems is: a dehydration device based on a papermaking process, comprising a dehydration cylinder; a solid phase discharge port and a liquid phase discharge port are arranged on the two 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 mechanism is fixedly connected to the output end of the first servo motor; a rotary drum is rotatably connected to the inside of the dehydration cylinder, and one end of the rotary drum is fixedly connected to the differential mechanism; a plurality of solid phase discharge holes are formed in the outer wall of one end of the rotary drum close to the solid phase discharge port; a gas flushing plate is arranged on the rotary drum close to the solid phase discharge hole, and the two sides of the gas flushing plate are arranged obliquely; a pneumatic assembly is arranged on the first base, and the pneumatic assembly is used to drive the gas flushing plate to treat the sludge at the plurality of solid phase discharge holes; a matching assembly is arranged in the rotary drum, and the matching assembly is used to assist in the dehydration of the papermaking sludge.

[0008] Preferably, the matching assembly comprises a spiral feeder, a feed inlet, a feed pipe and a spiral blade; the spiral feeder is fixedly connected to the differential mechanism, and the spiral feeder is located in the inside of the rotary drum; a plurality of feed inlets are formed in the middle position of the spiral feeder; the feed pipe is fixedly connected to one end of the spiral feeder away from the differential mechanism, and the feed pipe can be in communication with the plurality of feed inlets; and the spiral blade is fixedly connected to the outer wall of the spiral feeder.

[0009] Preferably, the pneumatic assembly comprises a gas pump, a first gas pipe and a gas guide plate; the gas pump is fixedly connected to the first base; the first gas pipe is fixedly connected to one output end of the gas pump; the gas guide plate is fixedly connected to the dehydration cylinder, and the first gas pipe can be in communication with the gas flushing plate through the gas guide plate; and a liquid phase discharge tank is fixedly connected to the outer wall of the dehydration cylinder close to the liquid phase discharge port.

[0010] Preferably, a scraper is fixedly connected to the outer wall of the rotary drum; the scraper is located at the solid phase discharge port of the dehydration cylinder, and the scraper can scrape 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 attached to 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 gas pipe is fixedly connected to one output end of the gas pump; a third gas pipe is fixedly connected to the second gas pipe, and the third gas pipe is in communication between the inner wall of the dehydration cylinder and the sliding rod.

[0013] Preferably, the third air pipe is fixed with a solenoid valve; the solenoid valve is fixed with a fourth air pipe; the fourth air pipe is fixed with a gas guide block at the end away from the solenoid valve, and the gas guide block is located at the solid phase discharge port; the bottom end of the gas guide block is fixed with a plurality of air pipes, and the air pipes can be connected with the fourth air pipe through the gas guide block; the bottom end of the gas guide block is fixed with a pneumatic stirrer; the output end of the pneumatic stirrer is fixed with a plurality of stirring blades.

[0014] Preferably, the top end of the single-hole plate is fixed with two filter screen plates; the inside of the single-hole plate is provided with a storage groove, and the storage groove is connected with the two filter screen plates.

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

[0016] Preferably, the bottom end of the single-hole plate is fixed with a fixed plate; the fixed plate is inserted with a storage plate; the outer wall of the storage plate is fixed with a handle.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. The dehydration device based on the papermaking process, through the efficient solid-liquid separation technology, realizes the dehydration of papermaking sludge and facilitates the recycling, effectively solves the problem of traditional sludge treatment, the dehydration device realizes the solid-liquid separation by the centrifugal force generated by the high-speed rotation of the sludge entering the rotating drum to the sludge to the inner wall of the rotating drum to form a filter cake layer, the screw feeder pushes the sludge to the solid phase discharge port to discharge, at the same time, the waste water is thrown out to the liquid phase discharge port, the air blowing plate periodically cleans the blockage of the solid phase discharge hole through the strong blowing action of the pneumatic assembly, and the scraper reduces the sludge adhesion of the inner wall of the rotating drum in combination with the rotation of the rotating drum, so that the continuous and stable dehydration efficiency is ensured.

[0019] 2. The dehydration device based on the papermaking process, through the cooperation of the four-hole plate, the single-hole plate and the second servo motor, the sludge is quantitatively discharged, and the pressure cover plate and the pneumatic stirrer are matched, so that the sludge is formed and dried, the sludge forming effect is improved, the two filter screen plates can filter the moisture of the sludge, which is convenient for subsequent dehydration, the top plate and the pressure sensor realize the sludge weighing and forming, and finally the fixed plate and the storage plate realize the recycling of the formed sludge cake. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described below in combination with the drawings.

[0021] Figure 1 is a perspective view of the present application;

[0022] Figure 2 is a partial structure sectional view of the dehydration cylinder in the present application;

[0023] Figure 3 is the structural diagram of the air punching plate in the application;

[0024] Figure 4 is the structural diagram of the electromagnetic valve in the application;

[0025] Figure 5 is the structural diagram of the air guide block in the application;

[0026] Figure 6 is the structural diagram of the four-hole plate in the application;

[0027] Figure 7 is the structural diagram of the storage groove in the application.

[0028] In the figure: 1, dehydration cylinder; 11, support frame; 12, No. 1 base; 13, No. 2 base; 14, No. 1 servo motor; 15, rotating drum; 16, solid-phase discharge hole; 17, air punching plate; 2, screw feeder; 21, feeding port; 22, feeding pipe; 23, screw blade; 3, air pump; 31, No. 1 air pipe; 32, air guide plate; 33, liquid-phase discharge box; 4, scraper; 5, No. 2 servo motor; 51, four-hole plate; 52, single-hole plate; 6, sliding rod; 61, pressing cover plate; 62, No. 2 air pipe; 63, No. 3 air pipe; 7, electromagnetic valve; 71, No. 4 air pipe; 72, air guide block; 73, air pipe; 74, pneumatic stirrer; 75, stirring blade; 8, filter screen plate; 81, storage groove; 9, top plate; 91, No. 2 elastic member; 92, pressure sensor; 93, fixed plate; 94, storage plate; 95, handle. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, purposes and effects realized by the application easy to understand, the application is further described below in combination with specific embodiments.

[0030] As Figures 1 to 4As shown, the papermaking process-based dewatering device comprises a dewatering cylinder 1; solid-phase discharge ports and liquid-phase discharge ports are arranged on the two sides of the dewatering cylinder 1 respectively; a support frame 11 is fixedly connected to the outer wall of the middle part of the dewatering 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 mechanism is fixedly connected to the output end of the first servo motor 14; a rotary drum 15 is rotatably connected to the inside of the dewatering cylinder 1, and one end of the rotary drum 15 is fixedly connected to the differential mechanism; a plurality of solid-phase discharge holes 16 are arranged on the outer wall of one end of the rotary drum 15 close to the solid-phase discharge ports; a gas flushing plate 17 is arranged on the rotary drum 15 close to the solid-phase discharge holes 16, and the two sides of the gas flushing plate 17 are arranged to be inclined; a pneumatic assembly is arranged on the first base 12, and the pneumatic assembly is used to drive the gas flushing plate 17 to treat the sludge at the solid-phase discharge holes 16; a matching assembly is arranged in the rotary drum 15, and the matching assembly is used to assist in dewatering the papermaking sludge; when the wastewater sludge generated in the papermaking process is dewatered, the two sides and the middle part of the dewatering cylinder 1 are supported by the first base 12, the support frame 11 and the second base 13, the mixed wastewater sludge is pumped into the inside of the rotary drum 15 by the matching assembly, the rotary drum 15 and the matching assembly connected to the differential mechanism driven by the output end of the first servo motor 14 are rotated, under the action of the centrifugal force generated by high-speed rotation, the sludge in the mixture is thrown to the inner wall of the rotary drum 15 and gradually accumulates to form a filter cake layer due to the large density, the sludge is pushed by the matching assembly and delivered to the solid-phase discharge holes 16, the sludge is thrown out of the solid-phase discharge holes 16 by the high-speed rotation of the rotary drum 15, and the sludge is discharged from the solid-phase discharge ports, while the wastewater is thrown out of the rotary drum 15 from the liquid-phase discharge ports on the side of the rotary drum 15 close to the differential mechanism due to the small density under the action of the centrifugal force, so as to realize solid-liquid separation, at the same time, due to the long operation of the dewatering device, part of the sludge will adhere to the inner wall of the solid-phase discharge holes 16 and the outer wall of the rotary drum 15 close to the solid-phase discharge holes 16, the pneumatic assembly is used to pump air into the gas flushing plate 17, the sludge adhering to the inner wall of the solid-phase discharge holes 16 is blown off by the strong blowing of the bottom end of the gas flushing plate 17 at the corresponding solid-phase discharge holes 16, the cleaning of the inner wall of the solid-phase discharge holes 16 is realized, the inclined surfaces on the two sides of the gas flushing plate 17 can cooperate with the scrapers to scrape off the sludge adhering to the outer wall of the rotary drum 15 when the rotary drum 15 rotates, and the probability of sludge blockage can be reduced.

[0031] As Figures 1 to 3As shown, the matching assembly includes a screw feeder 2, a feed port 21, a feed pipe 22 and a screw blade 23; the screw feeder 2 is fixed on the differential, and the screw feeder 2 is located inside the rotating drum 15; a plurality of feed ports 21 are arranged on the middle part of the screw feeder 2; the feed pipe 22 is fixed on the end of the screw feeder 2 away from the differential, and the feed pipe 22 can communicate with the plurality of feed ports 21; the screw blade 23 is fixed on the outer wall of the screw feeder 2; when the wastewater sludge is dehydrated, the mixed wastewater sludge is pumped into the screw feeder 2 through the feed pipe 22, and the wastewater sludge enters the inside of the screw feeder 2, and when the wastewater sludge reaches the plurality of feed ports 21, it is thrown into the inside of the rotating drum 15 under the high-speed rotation of the rotating drum 15; the screw feeder 2 and the rotating drum 15 are respectively connected to the differential, and the rotating speed of the rotating drum 15 is faster than that of the screw feeder 2; the wastewater and sludge are separated by the centrifugal force, and the separated sludge is pushed to the plurality of solid-phase discharge holes 16 by the screw blade 23, thereby achieving the effect of solid-liquid separation of wastewater sludge.

[0032] As shown in Figures 1 to 4 , the pneumatic assembly includes an air pump 3, a first air pipe 31 and a gas guide plate 32; the air pump 3 is fixed on the first base 12; the first air pipe 31 is fixed on one output end of the air pump 3; the gas guide plate 32 is fixed on the dehydration cylinder 1, and the first air pipe 31 can communicate with the gas flushing plate 17 through the gas guide plate 32; the outer wall of the dehydration cylinder 1 is fixed with a liquid-phase discharge box 33 near the liquid-phase discharge port; when the plurality of solid-phase discharge holes 16 and the outer wall of the rotating drum 15 at the solid-phase discharge holes 16 are attached with sludge, the air pump 3 is used to supply air, the gas is pumped into the gas flushing plate 17 through the first air pipe 31 and the gas guide plate 32, and the gas is discharged from the bottom of the gas flushing plate 17; when the gas hole at the bottom of the gas flushing plate 17 corresponds to each solid-phase discharge hole 16, the discharged high-strength gas flushes the inner wall of the solid-phase discharge hole 16, reduces the sludge attachment on the inner wall of the plurality of solid-phase discharge holes 16, and reduces the occurrence of sludge blockage; the liquid-phase discharge box 33 is fixed at the liquid-phase discharge port, and is used for guiding and discharging the separated wastewater.

[0033] The outer wall of the rotating drum 15 is fixed with a scraper 4; the scraper 4 is located at the solid-phase discharge port of the dehydration cylinder 1, and the scraper 4 can scrape the inner wall of the dehydration cylinder 1; when the rotating drum 15 rotates at high speed and a large amount of sludge is thrown out from the plurality of solid-phase discharge holes 16, part of the sludge is attached to the inner wall of the dehydration cylinder 1; the scraper 4 is fixed on the outer wall of the rotating drum 15, and the scraper 4 is attached to the inner wall of the dehydration cylinder 1; the scraper 4 scrapes the inner wall of the dehydration cylinder 1 with the rotation of the rotating drum 15, thereby reducing the sludge attachment on the inner wall of the dehydration cylinder 1.

[0034] As shown in Figures 1 to 3 , Figure 6 , and Figure 7As shown, the bottom end of the dehydration cylinder 1 is fixed with a second servo motor 5 near the solid phase discharge port; the bottom end of the second servo motor 5 is fixed with a four-hole plate 51; the first base 12 is fixed with a single-hole plate 52, and the single-hole plate 52 is attached to the four-hole plate 51; when discharging sludge, the sludge is discharged from the solid phase discharge port of the dehydration cylinder 1, and 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 scrapes the stored sludge away, so that the next empty hole groove is located below the solid phase discharge port to continue receiving material, until the hole groove with material reaches the hole groove of the single-hole plate 52, and the sludge in the hole groove is discharged, which plays a role in quantitative discharging of sludge.

[0035] As shown in Figures 1 to 4 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 fixed with a pressing plate 61, and the pressing plate 61 corresponds to the hole of the four-hole plate 51; one output end of the air pump 3 is fixed with a second air pipe 62; the second air pipe 62 is fixed with a third air pipe 63, and the third air pipe 63 communicates between the inner wall of the dehydration cylinder 1 and the sliding rod 6; when the sludge is quantitatively discharged, a large amount of paper pulp contained in the sludge can be recycled, and the sludge is discharged into a hole groove of the four-hole plate 51; when the amount of sludge reaches a set amount, the output end of the second servo motor 5 drives the stored sludge to be transported to a position below the pressing plate 61, the air pump 3 works to supply air to the second air pipe 62, and then the air is sent to the inner wall of the dehydration cylinder 1 and the sliding rod 6 through the third air pipe 63, the gas punches the sliding rod 6 to slide downward, the first elastic member is stretched, and the pressing plate 61 at the bottom end of the sliding rod 6 extrudes the sludge in the hole groove of the four-hole plate 51 below at this time, and the loose sludge is pressed into a cake shape, and the cake-shaped sludge falls when it is transferred to the hole groove of the single-hole plate 52, which plays a role in forming loose sludge for recycling.

[0036] As shown in Figures 1 to 5As shown, the third air pipe 63 is fixedly connected with the electromagnetic valve 7; the electromagnetic valve 7 is fixedly connected with the fourth air pipe 71; the end of the fourth air pipe 71 away from the electromagnetic valve 7 is fixedly connected with the air guide block 72, and the air guide block 72 is located at the solid phase discharging port; the bottom end of the air guide block 72 is fixedly connected with a plurality of air pipes 73, and the air pipes 73 can be communicated with the fourth air pipe 71 through the air guide block 72; the bottom end of the air guide block 72 is fixedly connected with the pneumatic stirrer 74; the output end of the pneumatic stirrer 74 is fixedly connected with a plurality of stirring blades 75; when the sludge is discharged from the solid phase discharging port, the electromagnetic valve 7 is used to control the opening of the fourth air pipe 71, so that the gas supplied by the air pump 3 enters the inside of the fourth air pipe 71, and after the gas enters the inside of the air guide block 72, it is branched, part of the gas enters the pneumatic stirrer 74, drives the plurality of stirring blades 75 fixed on the output end to rotate, and the plurality of stirring blades 75 can scatter the sludge falling at the solid phase discharging port, cooperate with the air discharged from the plurality of air pipes 73 to dry, improve the molding effect of the dewatered sludge, and at the same time, the plurality of air pipes 73 blow air at the solid phase discharging port, which can reduce the adhesion of the sludge on the inner wall of the solid phase discharging port.

[0037] As shown in Figure 1 , Figure 2 , Figure 6 and Figure 7 , the top end of the single-hole plate 52 is fixedly connected with two filter screen plates 8; the inside of the single-hole plate 52 is provided with a storage groove 81, and the storage groove 81 is communicated with the two filter screen plates 8; when part of the sludge has a small amount of water, the two filter screen plates 8 are fixed on the single-hole plate 52, and the two filter screen plates 8 are installed away from the solid phase discharging port and the hole groove of the single-hole plate 52, when the sludge collected by the four-hole plate 51 is transferred to the filter screen plate 8, the water in the sludge is filtered from the filter screen plate 8, and the water is stored in the storage groove 81, in order to ensure the molding effect of the sludge, the two filter screen plates 8 can also be installed as one filter screen plate 8, which plays a role in draining water from the sludge.

[0038] The inside of the single-hole plate 52 is slidably connected with the top plate 9; 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 to the inside of the single-hole plate 52 and below the top plate 9, and the pressure sensor 92 is electrically connected with the second servo motor 5; when the sludge is discharged from the solid phase discharging port, the sludge falls on the top plate 9, and as the gravity of the sludge continues to increase, the plurality of second elastic members 91 at the bottom of the top plate 9 are contracted, until the top plate 9 is pressed to trigger the pressure sensor 92, at this time, the sludge on the top plate 9 has reached the molding amount, and the top plate 9 has been leveled with the top surface of the single-hole plate 52, the pressure sensor 92 sends a signal to the total controller after being pressed, 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 molded, which plays a role in weighing and molding the sludge.

[0039] The bottom end of the single-hole plate 52 is fixedly connected with a fixed plate 93; the fixed plate 93 is inserted with a storage plate 94; the outer wall of the storage plate 94 is fixedly connected with a handle 95; when the formed sludge is collected, the fixed plate 93 is fixed at the bottom of the single-hole plate 52 as a local guide shield, the storage plate 94 is inserted on the fixed plate 93, and the fixed plate 93 and the storage plate 94 form a receiving cylinder; when the sludge cake corresponds to the hole groove of the four-hole plate 51 and the hole groove of the single-hole plate 52, the formed sludge cake falls into the receiving cylinder for temporary storage; when the sludge cake in the receiving cylinder is collected too much, the handle 95 is pulled to pull out the storage plate 94, so that the collected sludge cake can be collected, and the effect of recycling the sludge cake is achieved.

[0040] Working process: when the wastewater sludge generated in papermaking is dewatered, the two sides and the middle part of the dewatering cylinder 1 are supported by the first base 12, the supporting frame 11 and the second base 13, the mixed wastewater sludge is pumped into the inside of the rotary drum 15 through the matching assembly, the rotary drum 15 and the matching assembly connected by the differential mechanism are driven by the output end of the first servo motor 14 to rotate, under the action of the centrifugal force generated by high-speed rotation, the sludge in the mixture is thrown to the inner wall of the rotary drum 15 and gradually accumulates to form a filter cake layer due to the large density, the sludge is pushed by the matching assembly to the multiple solid-phase discharge holes 16, the sludge is thrown out of the multiple solid-phase discharge holes 16 by the high-speed rotation of the rotary drum 15, and the sludge is discharged from the solid-phase discharge port, while the wastewater is thrown out of the rotary drum 15 from the liquid-phase discharge port on the side of the rotary drum 15 close to the differential mechanism due to the small density under the action of the centrifugal force, so as to realize solid-liquid separation; at the same time, due to the long-time operation of the dewatering device, part of the sludge will adhere to the inner wall of the multiple solid-phase discharge holes 16 and the outer wall of the rotary drum 15 close to the solid-phase discharge holes 16, the pneumatic assembly is used to pump air into the air-blowing plate 17, the sludge adhering to the inner wall of the solid-phase discharge holes 16 is blown off by the strong blowing of the bottom end of the air-blowing plate 17 at the corresponding solid-phase discharge holes 16, so as to realize the cleaning of the inner wall of the multiple solid-phase discharge holes 16, the two side inclined surfaces of the air-blowing plate 17 can cooperate with the scraper to scrape off the sludge adhering to the outer wall of the rotary drum 15 when the rotary drum 15 rotates, so as to reduce the probability of sludge blockage; when the wastewater sludge is dewatered, the mixed wastewater sludge is pumped into the inside of the spiral feeder 2 through the feeding pipe 22, the wastewater sludge is thrown into the inside of the rotary drum 15 when the wastewater sludge reaches the multiple feeding ports 21 under the high-speed rotation of the rotary drum 15, the spiral feeder 2 and the rotary drum 15 are respectively connected to the differential mechanism, and the rotating speed of the rotary drum 15 is faster than that of the spiral feeder 2, the wastewater and the sludge are separated by the action of the centrifugal force, and the spiral blade 23 pushes the separated sludge to the multiple solid-phase discharge holes 16 for external discharge, so as to realize the solid-liquid separation of the wastewater sludge;

[0041] When the multiple solid phase discharge holes 16 and the solid phase discharge holes 16 are attached with sludge on the outer wall of the rotating drum 15, the air pump 3 is used to supply air, the gas is pumped into the air jet plate 17 through the first air pipe 31 and the air guide plate 32, and the gas is discharged from the bottom of the air jet plate 17. When the air holes at the bottom of the air jet plate 17 correspond to each solid phase discharge hole 16, the high-strength gas discharged from the air holes at the bottom of the air jet plate 17 washes the inner wall of the solid phase discharge hole 16, reduces the sludge attached to the inner wall of the multiple solid phase discharge holes 16, and reduces the occurrence of sludge blockage. The liquid phase discharge tank 33 is fixed at the liquid phase discharge port and is used for guiding the discharge of separated wastewater; when the sludge is quantitatively discharged, a large amount of paper pulp contained in the sludge can be used for recycling. The sludge is discharged into one hole slot of the four-hole plate 51, and when the amount of sludge reaches the set amount, the output end of the second servo motor 5 drives the stored sludge to the position below the pressing plate 61. The air pump 3 supplies air to the second air pipe 62, and then the air is sent to the inner wall of the dehydration cylinder 1 and between the sliding rod 6 through the third air pipe 63. The air pressure makes the sliding rod 6 slide down, the first elastic member is stretched, and the pressing plate 61 at the bottom end of the sliding rod 6 extrudes the sludge in the hole slot of the four-hole plate 51 below at this time, and the loose sludge is pressed into a cake shape. When the cake-shaped sludge is transferred to the hole slot of the single-hole plate 52, it falls, which plays a role in forming loose sludge for recycling; when the sludge is discharged from the multiple solid phase discharge holes 16, the electromagnetic valve 7 is used to control the opening of the fourth air pipe 71, so that the gas supplied by the air pump 3 enters the inside of the fourth air pipe 71. After the gas enters the inside of the air guide block 72, it is branched, part of the gas enters the air-driven mixer 74, drives the multiple stirring blades 75 fixed on the output end to rotate, and the multiple stirring blades 75 can scatter the sludge falling at the solid phase discharge port. Part of the gas is discharged from the multiple air pipes 73 to dry, which improves the forming effect of the dewatered sludge, and at the same time, the multiple air pipes 73 blow air at the solid phase discharge port, which can reduce the attachment of sludge on the inner wall of the solid phase discharge port;

[0042] When the rotating drum 15 rotates at high speed and a large amount of sludge is thrown out from the multiple solid phase discharge holes 16, part of the sludge is attached to the inner wall of the dehydration cylinder 1. The scraper 4 is fixed on the outer wall of the rotating drum 15, and the scraper 4 is attached to the inner wall of the dehydration cylinder 1. The scraper 4 scrapes the inner wall of the dehydration cylinder 1 with the rotation of the rotating drum 15, which reduces the attachment of sludge on the inner wall of the dehydration cylinder 1;

[0043] When discharging the sludge, the sludge is discharged from the solid phase discharge port of the dewatering cylinder 1, falls into a hole groove of the four-hole plate 51, and is placed on the single-hole plate 52. When the sludge stored in the hole groove reaches a 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 away the stored sludge, so that the next empty hole groove is located below the solid phase discharge port to continue receiving the sludge, until the sludge-containing hole groove reaches the hole groove of the single-hole plate 52, the sludge in the hole groove is discharged, and the function of quantitative discharging of the sludge is realized. When part of the sludge contains a small amount of water, two filter screen plates 8 are fixed on the single-hole plate 52, and are installed away from the solid phase discharge port and the hole groove of the single-hole plate 52. When the four-hole plate 51 transfers the collected sludge to the filter screen plate 8, the water in the sludge is filtered from the filter screen plate 8, and the water is stored in the storage groove 81. In order to ensure the forming effect of the sludge, the two filter screen plates 8 can also be installed as one filter screen plate 8, and the function of draining water from the sludge is realized. When the sludge is discharged from the solid phase discharge port, the sludge falls on the top plate 9, and the gravity of the continuously increasing sludge presses the multiple second elastic members 91 at the bottom of the top plate 9 to shrink, until the top plate 9 presses and triggers 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 has been leveled with the top surface of the single-hole plate 52. The pressure sensor 92 sends a signal to the general controller after being pressed, and the general 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 the sludge is formed, and the function of weighing and forming the sludge is realized. When the formed sludge is collected, the fixed plate 93 is fixed on the bottom of the single-hole plate 52 as a local guide shield, and the storage plate 94 is inserted into the fixed plate 93. The fixed plate 93 and the storage plate 94 form a receiving cylinder. When the hole groove of the four-hole plate 51 corresponds to the hole groove of the single-hole plate 52, the formed sludge cake falls into the receiving cylinder for temporary storage. When the sludge cake in the receiving cylinder is collected too much, the handle 95 is pulled out of the storage plate 94, so that the received sludge cake can be discharged, and the function of recycling the sludge cake is realized.

[0044] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A dewatering device based on a papermaking process, characterized by: The utility model provides dehydration cylinder (1), both sides of dehydration cylinder (1) are provided with solid phase discharge port and liquid phase discharge port respectively, the middle part outer wall of dehydration cylinder (1) is fixedly connected with support frame (11), the bottom of support frame (11) is fixedly connected with no. The side of no. The top of no. The output of no. The inside rotation of dehydration cylinder (1) is connected with drum (15), and one end of drum (15) is fixedly connected on differential mechanism, and the outer wall of one end of drum (15) is close to solid phase discharge port and is provided with a plurality of solid phase discharge hole (16), and the both sides of air -blasting plate (17) are inclined and are provided with air -blasting plate (17) on drum (15) close to solid phase discharge hole (16), and the air -blasting plate (17) is used to drive air -blasting plate (17) to handle a plurality of solid phase discharge hole (16) place sludge, and the inside of drum (15) is provided with cooperation component, and cooperation component is used to assist papermaking sludge dewatering, The utility model provides dehydration cylinder (1), both sides of dehydration cylinder (1) are provided with solid phase discharge port and liquid phase discharge port respectively, the middle part outer wall of dehydration cylinder (1) is fixedly connected with support frame (11), the bottom of support frame (11) is fixedly connected with no. The side of no. The top of no. The output of no. The inside rotation of dehydration cylinder (1) is connected with drum (15), and one end of drum (15) is fixedly connected on differential mechanism, and the outer wall of one end of drum (15) is close to solid phase discharge port and is provided with a plurality of solid phase discharge hole (16), and the both sides of air -blasting plate (17) are inclined and are provided with air -blasting plate (17) on drum (15) close to solid phase discharge hole (16), and the air -blasting plate (17) is used to drive air -blasting plate (17) to handle a plurality of solid phase discharge hole (16) place sludge, and the inside of drum (15) is provided with cooperation component, and cooperation component is used to assist papermaking sludge dewatering, The bottom inner wall of dehydration cylinder (1) is slidably connected with sliding rod (6) through no. The bottom of sliding rod (6) is fixedly connected with pressure cover plate (61), and pressure cover plate (61) corresponds with the hole of four -hole plate (51), one output of gas pump (3) is fixedly connected with no. No. The three -way pipe (63) of no. The three -way pipe (63) is connected to the inner wall of dehydration cylinder (1) and sliding rod (6) between, The three -way pipe (63) is fixedly connected with solenoid valve (7), and the solenoid valve (7) is fixedly connected with no. The end of no. The bottom of guide air block (72) is fixedly connected with a plurality of air pipe (73), and air pipe (73) can be communicated with no. The output of pneumatic agitator (74) is fixedly connected with a plurality of stirring vane (75).

2. A dewatering device based on papermaking process according to claim 1, characterized in that: The matching assembly comprises a screw feeder (2), a feeding port (21), a feeding pipe (22) and a screw blade (23); the screw feeder (2) is fixed on a differential mechanism, and the screw feeder (2) is located inside a rotating drum (15); a plurality of feeding ports (21) are arranged on the middle part of the screw feeder (2); the feeding pipe (22) is fixed on the end of the screw feeder (2) away from the differential mechanism, and the feeding pipe (22) can be communicated with the plurality of feeding ports (21); and the screw blade (23) is fixed on the outer wall of the screw feeder (2).

3. A dewatering device based on papermaking process as claimed in claim 1, wherein: The outer wall of the rotating drum (15) is fixed with a scraper (4); the scraper (4) is located at the solid-phase discharge port of the dehydration cylinder (1), and the scraper (4) can be attached to the inner wall of the dehydration cylinder (1).

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

5. A dewatering device based on papermaking process according to claim 4, characterized in that: The top end of the single-hole plate (52) is fixed with two filter screen plates (8); the inside of the single-hole plate (52) is provided with a storage groove (81), and the storage groove (81) is communicated with the two filter screen plates (8).

6. A dewatering device based on papermaking process as claimed in claim 4, wherein: The inside of the single-hole plate (52) is slidably connected with a top plate (9); a plurality of second elastic members (91) are fixed between the inner wall of the single-hole plate (52) and the top plate (9); a pressure sensor (92) is fixed below the top plate (9) in the inside of the single-hole plate (52), and the pressure sensor (92) is electrically connected with the second servo motor (5).

7. A dewatering device based on papermaking process as claimed in claim 4, wherein: The bottom end of the single-hole plate (52) is fixed with a fixed plate (93); the fixed plate (93) is inserted with a storage plate (94); and the outer wall of the storage plate (94) is fixed with a handle (95).

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