Papermaking wastewater recycling device for impregnated paper production

Abstract

The invention discloses a papermaking wastewater recycling device for impregnated paper production, and relates to the technical field of papermaking wastewater recycling, the papermaking wastewater recycling device comprises a shell assembly, the shell assembly is internally provided with a filtered matter conveying and collecting mechanism and a uniform mixing mechanism, a centrifugal filtering mechanism and a lifting mechanism are sequentially arranged on the outer side of the uniform mixing mechanism from top to bottom in a transmission mode, and a sealing mechanism is arranged on the lifting mechanism; the lifting mechanism comprises a fixing frame fixedly arranged at the bottom of the lower shell, and an avoiding channel is formed in the center of the bottom of the fixing frame in the vertical direction in a penetrating mode. According to the device, resetting can be actively achieved after the primary dipping tank cleaning wastewater recovery process is finished, and the problems that manpower is consumed due to manual resetting, and the overall treatment efficiency of papermaking wastewater is affected due to too long downtime are solved; therefore, filter screen residues can be effectively reduced, and the practical application effect is more ideal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of papermaking wastewater recycling, in particular to a papermaking wastewater recycling and recycling device for impregnated paper production. BACKGROUND

[0002] Impregnated paper is a functional paper treated by a special process. The core is to immerse base paper such as wood pulp paper and kraft paper in a resin solution, and after drying and curing, a material with specific properties is formed. It is widely used in the fields of furniture and building materials. During the production of impregnated paper, the impregnation tank used to hold the resin solution needs to be cleaned regularly. The cleaning wastewater produced during the cleaning process contains organic resin and suspended solids, etc. Therefore, it needs to be treated by coagulation and filtration and other steps to ensure that the wastewater can meet the discharge or recycling standards.

[0003] The invention patent with the authorized announcement number CN117919826B discloses a papermaking wastewater recycling and recycling device. By connecting the bottom plate in the filter box, the filter in the wastewater is collected on the bottom plate, and then the connecting plate is used to pull the bottom plate to extrude the filter, which facilitates the workers to quickly process the filter, so that the water in the filter is squeezed out as much as possible, increasing the practicability of the device and improving the work efficiency of the workers.

[0004] However, the above-mentioned device still needs manual adjustment and resetting of the device after separating and outputting the filter, which not only consumes too much labor but also causes the equipment downtime to be too long, thereby affecting the overall processing efficiency of the papermaking wastewater. In addition, although the water in the filter is squeezed out, due to the limited angle of inclination of the bottom plate, part of the filter screen will still be attached to the bottom plate and cannot fall off, so the actual application effect is not ideal.

[0005] Therefore, it is necessary to invent a papermaking wastewater recycling and recycling device for impregnated paper production to solve the above-mentioned problems. SUMMARY

[0006] The papermaking wastewater recycling device for impregnated paper production can be reset actively after the recycling process of the wastewater from the primary impregnation tank is completed, and the problems of wasting manpower caused by manual reset and affecting the overall treatment efficiency of the papermaking wastewater due to too long downtime are solved.

[0007] To achieve the above object, the present application provides the following technical scheme: a papermaking wastewater recycling device for impregnated paper production, comprising a shell assembly, a filter transmission and collection mechanism and a mixing mechanism are arranged inside the shell assembly, a centrifugal filter mechanism and a lifting mechanism are sequentially arranged on the outer side of the mixing mechanism from top to bottom, and a sealing mechanism is arranged on the lifting mechanism.

[0008] The lifting mechanism comprises a fixed frame fixedly arranged at the bottom of the lower shell, an avoiding passage is arranged through the center of the bottom of the fixed frame in the vertical direction, a lower movable ring is rotatably nested on the inner bottom of the fixed frame through a bearing, a lifting plate is slidably attached to the inner top of the fixed frame in the vertical direction, the lifting plate is sleeved and arranged on the outer bottom of the rotating shaft and is threadedly connected with the rotating shaft, an outer threaded sleeve is slidably sleeved on the outer side of the rotating shaft and is fixedly arranged at the bottom of the lifting plate in the vertical direction, a spring A, an upper movable ring and a horizontal plate are sequentially sleeved on the outer side of the outer threaded sleeve from top to bottom, the spring A is fixedly connected between the lifting plate and the upper movable ring, the upper movable ring is rotatably nested on the top of the horizontal plate through a bearing, and the outer threaded sleeve and the horizontal plate are both provided with threads on the outer side and the inner side, respectively.

[0009] Preferably, the shell assembly comprises a lower shell, a support base is fixedly arranged at the bottom of the lower shell, and an upper shell is fixedly arranged at the top of the lower shell.

[0010] Preferably, a drain pipe is fixedly and penetratively arranged at the bottom of the left side of the lower shell, and a water inlet pipe and a dosing pipe are sequentially fixedly and penetratively arranged on the top of the right side of the upper shell from top to bottom.

[0011] Preferably, the filter transmission and collection mechanism comprises a transmission pipe fixedly and penetratively arranged at the right top of the lower shell and communicating with the inner cavity of the upper shell, and the filter transmission and collection mechanism further comprises a transmission channel formed in the bottom of the lower shell.

[0012] Preferably, the filter transmission collection mechanism further comprises a base plate fixedly arranged in the inner side of the support base, and a collection barrel is arranged on the top of the base plate and located directly below the transmission channel.

[0013] Preferably, the mixing mechanism comprises a rotating shaft rotatably arranged in the inner cavity of the upper shell through a bearing, and a motor fixedly arranged on the top of the upper shell and in transmission connection with the rotating shaft, and the rotating shaft penetrates the lower shell in the vertical direction and is rotatably connected with the lower shell through a bearing, and a plurality of stirring rods are uniformly fixedly arranged on the outer side of the rotating shaft.

[0014] Preferably, the centrifugal filtering mechanism comprises a rotating disc fixedly sleeved on the outer side of the rotating shaft, the rotating disc seals the bottom opening of the transmission pipe, and a plurality of cylindrical filter screens are uniformly fixedly arranged on the top of the rotating disc.

[0015] Preferably, the sealing mechanism comprises a sliding shaft slidingly penetrating the horizontal plate in the vertical direction, a sealing block for sealing the transmission channel is fixedly arranged on the top end of the sliding shaft, and a spring B is fixedly connected between the horizontal plate and the sealing block and sleeved on the outer side of the sliding shaft.

[0016] The application also provides a use method of the papermaking wastewater recycling device for impregnated paper production, and the method specifically comprises the following steps:

[0017] S1, the impregnation tank cleaning wastewater is input into the inner part of the upper shell through the water inlet pipe, the bottom end of the transmission pipe is sealed by the rotating disc, and the untreated impregnation tank cleaning wastewater cannot be discharged through the transmission pipe, then the coagulant and the flocculant are added into the inner part of the upper shell through the dosing pipe in sequence, and the coagulant and the flocculant are mixed with the impregnation tank cleaning wastewater in sequence to make the flocculating substance in the cleaning wastewater precipitate;

[0018] S2, the motor is started, and the motor drives the rotating shaft to rotate when the motor is started, the rotating shaft drives the plurality of stirring rods to continuously rotate in the inner part of the upper shell when the rotating shaft rotates, and the flocculating substance is uniformly dispersed in the water body, the rotating shaft drives the rotating disc to synchronously rotate when the rotating shaft rotates, and the plurality of cylindrical filter screens are sequentially passed through the bottom opening of the transmission pipe when the rotating disc rotates.

[0019] S3, when the plurality of cylindrical filter screens are sequentially passed below the transmission pipe, the cleaning wastewater in the inner part of the upper shell drives the flocculating substance to continuously pass through the transmission pipe and enter the inner side of the plurality of cylindrical filter screens, and the water in the inner side of the cylindrical filter screen is filtered out from the inner side of the cylindrical filter screen under the centrifugal action and enters the inner part of the lower shell and is output back for use through the drain pipe during the synchronous rotation of the plurality of cylindrical filter screens and the rotating disc.

[0020] S4, in the rotating process of the rotating shaft, the lifting plate guided by the fixed frame is driven to continuously move down, and the lifting plate drives the outer threaded sleeve, spring A, upper movable ring and horizontal plate to move down synchronously, in this process, the spring B in the compressed state is continuously restored, thereby the sealing block always keeps blocking the transmission channel;

[0021] S5, with the continuous downward movement of the horizontal plate, the spring B gradually restores, at this time, the treated cleaning wastewater is completely discharged, and the flocculation is left inside the plurality of cylindrical filter screens, and subsequently, with the continuous downward movement of the horizontal plate, the sealing block moves down synchronously with the horizontal plate, thereby unblocking the transmission channel;

[0022] S6, the horizontal plate is attached to the top of the avoidance channel due to the continuous downward movement, at this time, the top surface of the sealing block is flush with the bottom surface of the lower shell, and due to the blockage of the avoidance channel, the horizontal plate cannot drive the sealing block to move down, and simultaneously, with the continuous downward movement of the lifting plate, the lifting plate compresses the spring A, and simultaneously drives the outer threaded sleeve to move down inside the horizontal plate;

[0023] S7, the outer threaded sleeve drives the horizontal plate to rotate when moving down, and the horizontal plate drives the sealing block to rotate synchronously through the sliding shaft, in this process, the flocculation possibly existing on the top surface of the sealing block is scraped off by the inner wall of the transmission channel, and after the sealing block is completely moved away from the bottom of the transmission channel, the rotating speed of the motor is reduced;

[0024] S8, when the plurality of cylindrical filter screens pass above the transmission channel again in sequence, at this time, under the action of gravity, the flocculation inside the plurality of cylindrical filter screens falls into the collection barrel and is collected, after the flocculation is completely collected, the motor drives the rotating shaft to rotate reversely, thereby resetting each component, and subsequently, the motor is stopped.

[0025] Technical effects and advantages of the present application:

[0026] The present application is provided with a mixing mechanism, a centrifugal filtering mechanism, a lifting mechanism and a sealing mechanism, so as to stir the cleaning wastewater of the immersion tank by the mixing mechanism, thereby synchronously driving the centrifugal filtering mechanism and the lifting mechanism, unblocking the transmission pipe by the centrifugal filtering mechanism, realizing the synchronous centrifugal treatment of the cleaning wastewater and the flocculation, and subsequently, the lifting mechanism drives the sealing mechanism to unblock the transmission channel, and drives the sealing mechanism to move away from below the transmission channel, thereby enabling the flocculation inside the centrifugal filtering mechanism to directly fall into the collection barrel under the action of gravity, compared with the prior art, the present application can automatically reset after the cleaning wastewater recycling process of the immersion tank is completed, and there is no problem of wasting manpower caused by manual resetting and affecting the overall treatment efficiency of the papermaking wastewater due to too long downtime, in addition, since the filtered material is output along the vertical direction by gravity, the residual filter screen can be effectively reduced, and the actual application effect is more ideal. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the whole structure schematic diagram of the application;

[0028] Figure 2 It is the whole structure schematic diagram of the application;

[0029] Figure 3 It is the structure schematic diagram of the shell assembly, the filter transmission collection mechanism and the mixing mechanism of the application;

[0030] Figure 4 It is the structure schematic diagram of the centrifugal filter mechanism of the application;

[0031] Figure 5 It is the structure schematic diagram of the lifting mechanism and the sealing mechanism of the application.

[0032] In the drawing: 1, shell assembly;11, lower shell;12, support base;13, upper shell;14, drain pipe;15, water inlet pipe;16, dosing pipe;2, filter transmission collection mechanism;21, transmission pipe;22, transmission channel;23, pad;24, collection barrel;3, mixing mechanism;31, rotating shaft;32, motor;33, stirring rod;4, centrifugal filter mechanism;41, rotating disc;42, cylindrical filter screen;5, lifting mechanism;51, fixed frame;52, avoidance channel;53, lower movable ring;54, lifting plate;55, external threaded sleeve;56, spring A;57, upper movable ring;58, cross plate;6, sealing mechanism;61, sliding shaft;62, sealing block;63, spring B. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0034] The application provides a papermaking wastewater recycling device for impregnated paper production, as shown in Figures 1-5 The application provides a papermaking wastewater recycling device for impregnated paper production, as shown in

[0035] As shown in Figure 3As shown, the shell assembly 1 includes a lower shell 11, the lower shell 11 is fixedly provided with a support base 12 at the bottom and an upper shell 13 at the top, the lower shell 11 and the upper shell 13 are both welded from 304 stainless steel material, the thickness is 5-8mm, which has acid and alkali corrosion resistance characteristics, can adapt to the long-term erosion of residual resin and chemical agents in papermaking wastewater, the support base 12 is cast iron material, the lower shell 11 is fixedly provided with a drain pipe 14 at the bottom on the left side, and the upper shell 13 is fixedly provided with a water inlet pipe 15 and a dosing pipe 16 from top to bottom on the right side at the top.

[0036] By setting the above structure, the immersion tank cleaning wastewater is input into the inside of the upper shell 13 through the water inlet pipe 15, and then the coagulant and the flocculant are added into the inside of the upper shell 13 through the dosing pipe 16, respectively. The coagulant and the flocculant are mixed with the immersion tank cleaning wastewater, respectively, to make the flocculating material in the cleaning wastewater precipitate.

[0037] As shown in the figure, Figure 3 The filter transmission and collection mechanism 2 includes a transmission pipe 21 fixedly provided on the right side of the top of the lower shell 11 and communicated with the inner cavity of the upper shell 13, the transmission pipe 21 is a stainless steel seamless pipe, the inner wall of the pipe is treated with polytetrafluoroethylene coating to reduce the adhesion of the flocculating material, and a sealing ring is fixedly nested in the inside of the open end of the transmission pipe 21, the filter transmission and collection mechanism 2 further includes a transmission channel 22 opened in the bottom of the lower shell 11, and the filter transmission and collection mechanism 2 further includes a backing plate 23 fixedly provided in the inside of the support base 12, and the backing plate 23 has a collection barrel 24 placed on the top and located directly below the transmission channel 22.

[0038] As shown in the figure, Figure 3 The mixing mechanism 3 includes a rotating shaft 31 rotatably nested in the inner cavity of the top of the upper shell 13 through a bearing, the rotating shaft 31 is provided with a thread at the bottom of the outer side, the mixing mechanism 3 further includes a motor 32 fixedly provided on the top of the upper shell 13 and in transmission connection with the rotating shaft 31, the rotating shaft 31 penetrates the lower shell 11 in the vertical direction and is rotatably connected with the lower shell 11 through a bearing, a plurality of stirring rods 33 are uniformly fixedly provided on the outer side of the rotating shaft 31, the stirring rods 33 are made of stainless steel, and the plurality of stirring rods 33 are staggered to make the flocculating material more uniformly dispersed.

[0039] By setting the above structure, the motor 32 drives the rotating shaft 31 to rotate after starting, the rotating shaft 31 drives the plurality of stirring rods 33 to continuously rotate in the inside of the upper shell 13 when rotating, and then the flocculating material is uniformly dispersed in the water body, avoiding that too much flocculating material is discharged at the beginning of subsequent drainage, which causes too much flocculating material to accumulate in the inside of the cylindrical filter screen 42, and affects the centrifugal drainage efficiency.

[0040] As shown in the figure, Figure 4As shown, the centrifugal filtering mechanism 4 includes a rotating disc 41 fixedly sleeved on the outside of the rotating shaft 31, the rotating disc 41 is made of aluminum alloy material, the surface is anodized to enhance wear resistance, the rotating disc 41 blocks the bottom opening of the transmission pipe 21, a plurality of cylindrical filter screens 42 are uniformly fixedly sleeved on the top of the rotating disc 41, the bottom opening of the cylindrical filter screen 42 is blocked by the inner wall of the lower shell 11, the material of the cylindrical filter screen 42 is 316L stainless steel, a silica gel sealing ring is installed at the bottom of the cylindrical filter screen 42 and the inner wall of the lower shell 11, which prevents unfiltered wastewater from leaking.

[0041] By setting the above structure, in the initial state, the untreated cleaning wastewater in the upper shell 13 cannot be discharged through the transmission pipe 21 because the bottom opening of the transmission pipe 21 is blocked by the rotating disc 41. When the rotating shaft 31 rotates, the rotating disc 41 rotates synchronously, and the plurality of cylindrical filter screens 42 rotate in turn through the bottom opening of the transmission pipe 21. When the plurality of cylindrical filter screens 42 pass through the bottom of the transmission pipe 21, the cleaning wastewater in the upper shell 13 drives the flocculation material to continuously pass through the transmission pipe 21 into the inside of the plurality of cylindrical filter screens 42. At the same time, the plurality of cylindrical filter screens 42 rotate synchronously with the rotating disc 41, and the water inside the cylindrical filter screen 42 is filtered out under the centrifugal action and enters the inside of the lower shell 11 through the drain pipe 14 for recycling.

[0042] As shown, Figure 5 The lifting mechanism 5 includes a fixed frame 51 fixedly arranged at the bottom of the lower shell 11, an avoiding passage 52 is vertically arranged at the center of the bottom of the fixed frame 51, a lower movable ring 53 is rotatably nested in the inside of the fixed frame 51, a lifting plate 54 is vertically slidably attached to the inside of the fixed frame 51, the lifting plate 54 is sleeved on the outside of the bottom of the rotating shaft 31 and is threadedly connected with the rotating shaft 31, an external thread sleeve 55 is vertically slidably sleeved on the outside of the rotating shaft 31 and is fixedly arranged at the bottom of the lifting plate 54, a spring A 56, an upper movable ring 57 and a horizontal plate 58 are sequentially sleeved on the outside of the external thread sleeve 55 from top to bottom, the spring A 56 is fixedly connected between the lifting plate 54 and the upper movable ring 57, the spring A 56 is a cylindrical helical compression spring, which ensures that the lifting plate 54 can drive the horizontal plate 58 to move synchronously when the lifting plate 54 moves downward, and provides a rebound force when the lifting plate 54 is reset, the upper movable ring 57 is rotatably nested on the top of the horizontal plate 58, the external thread sleeve 55 and the horizontal plate 58 are both provided with threads on the outside and the inside, respectively, and the external thread sleeve 55 is threadedly connected with the horizontal plate 58.

[0043] By setting the above structure, the lifting plate 54 guided by the fixed frame 51 continuously moves downward synchronously with the rotating shaft 31 during the rotation of the rotating shaft 31.

[0044] AsFigure 5 As shown, the sealing mechanism 6 comprises a sliding shaft 61 sliding through the horizontal plate 58 in the vertical direction, the top end of the sliding shaft 61 is fixedly provided with a sealing block 62 for sealing the transmission channel 22, the outer side of the sliding shaft 61 is sleeved with a spring B 63 fixedly connected between the horizontal plate 58 and the sealing block 62, the spring B 63 is also a cylindrical helical compression spring, which can provide a continuous sealing force after being compressed, so as to ensure that the sealing block 62 always adheres to the transmission channel 22 at the initial stage of the downward movement of the horizontal plate 58.

[0045] By arranging the lifting mechanism 5 and the sealing mechanism 6, the spring B 63 in the compressed state can continuously recover during the downward movement of the horizontal plate 58, so that the sealing block 62 always maintains the plugging of the transmission channel 22, thereby avoiding the filtered cleaning wastewater and coagulum from being discharged through the transmission channel 22 at this time. With the continuous downward movement of the horizontal plate 58, the spring B 63 gradually recovers, and subsequently, with the continuous downward movement of the horizontal plate 58, the sealing block 62 synchronously descends with the horizontal plate 58, thereby releasing the plugging of the transmission channel 22. Since the treated cleaning wastewater has been completely discharged for reuse at this time, and the flocculating material remains inside the plurality of cylindrical filter screens 42, the cleaning wastewater will not be discharged through the unsealed transmission channel 22. When the horizontal plate 58 adheres to the top of the avoiding channel 52 due to the continuous downward movement, the top surface of the sealing block 62 is flush with the bottom surface of the lower shell 11. Due to the blocking of the avoiding channel 52, the horizontal plate 58 cannot drive the sealing block 62 to move downward any more. At the same time, with the continuous downward movement of the lifting plate 54, the lifting plate 54 compresses the spring A 56, and simultaneously drives the outer threaded sleeve 55 to move downward inside the horizontal plate 58. When the outer threaded sleeve 55 moves downward, it drives the horizontal plate 58 to rotate. When the horizontal plate 58 rotates, it drives the sealing block 62 to rotate synchronously through the sliding shaft 61. Until the sealing block 62 is completely removed from the bottom of the transmission channel 22. During this process, the flocculating material that may exist on the top surface of the sealing block 62 is scraped off by the inner wall of the transmission channel 22, thereby avoiding the residual flocculating material. At the same time, the removed sealing block 62 can avoid blocking the transmission channel 22 in the vertical direction, so that the flocculating material cannot fall smoothly.

[0046] The application also provides a use method of the papermaking wastewater recycling device for impregnated paper production, which specifically comprises the following steps:

[0047] S1, the impregnation tank cleaning wastewater is input into the upper shell 13 through the water inlet pipe 15, the bottom end of the transmission pipe 21 is blocked by the rotating disc 41, and the untreated impregnation tank cleaning wastewater cannot be discharged through the transmission pipe 21. Then, the coagulant and the flocculating agent are added into the upper shell 13 through the dosing pipe 16 in sequence, and the coagulant and the flocculating agent are mixed with the impregnation tank cleaning wastewater in sequence to make the flocculating material precipitate in the cleaning wastewater.

[0048] S2, start the motor 32, the motor 32 starts to drive the rotating shaft 31 to rotate, the rotating shaft 31 rotates to drive the plurality of stirring rods 33 to rotate continuously in the upper shell 13, thereby making the flocculation evenly dispersed in the water body, avoiding the subsequent drainage, when the flocculation is discharged too much, the flocculation is accumulated too much in the cylindrical filter screen 42, and the centrifugal drainage efficiency is affected, the rotating shaft 31 rotates to drive the rotating disc 41 to rotate synchronously, and the rotating disc 41 rotates to drive the plurality of cylindrical filter screens 42 to pass through the bottom opening of the transmission pipe 21 in turn;

[0049] S3, when the plurality of cylindrical filter screens 42 pass through below the transmission pipe 21 in turn, the cleaning wastewater in the upper shell 13 drives the flocculation to continuously pass through the transmission pipe 21 and enter the inside of the plurality of cylindrical filter screens 42, and in the process that the plurality of cylindrical filter screens 42 rotate synchronously with the rotating disc 41, the water in the inside of the cylindrical filter screen 42 is filtered out from the inside of the cylindrical filter screen 42 under the centrifugal action and enters the inside of the lower shell 11 and is output back to use through the drainage pipe 14;

[0050] S4, in the rotating process of the rotating shaft 31, the lifting plate 54 guided by the fixed frame 51 is continuously lowered, the outer threaded sleeve 55, the spring A 56, the upper movable ring 57 and the horizontal plate 58 are lowered synchronously, in the process, the spring B 63 in the compressed state is continuously restored, thereby making the sealing block 62 always keep the blocking of the transmission channel 22;

[0051] S5, with the continuous lowering of the horizontal plate 58, the spring B 63 is gradually restored, at this time, the treated cleaning wastewater is completely discharged, and the flocculation remains in the inside of the plurality of cylindrical filter screens 42, and subsequently, with the continuous lowering of the horizontal plate 58, the sealing block 62 is lowered synchronously with the horizontal plate 58, thereby unblocking the transmission channel 22;

[0052] S6, the horizontal plate 58 is in contact with the top of the avoiding channel 52 due to the continuous lowering, at this time, the top surface of the sealing block 62 is flush with the bottom surface of the lower shell 11, and due to the blockage of the avoiding channel 52, the horizontal plate 58 cannot lower the sealing block 62 any more, and simultaneously, with the continuous lowering of the lifting plate 54, the lifting plate 54 compresses the spring A 56, and simultaneously drives the outer threaded sleeve 55 to move downwards in the inside of the horizontal plate 58;

[0053] S7, the outer threaded sleeve 55 drives the horizontal plate 58 to rotate when moving downwards, the horizontal plate 58 rotates to drive the sealing block 62 to rotate synchronously through the sliding shaft 61, in the process, the flocculation possibly existing on the top surface of the sealing block 62 is scraped off by the inner wall of the transmission channel 22, and after the sealing block 62 is completely moved away from the bottom of the transmission channel 22, the rotating speed of the motor 32 is reduced;

[0054] S8, when the plurality of cylindrical filter screen 42 again in turn through the transmission channel 22 above, at this time under the action of gravity, the plurality of cylindrical filter screen 42 inside the flocculation material is all dropped to the collection bucket 24 inside is collected, after the flocculation material is completely collected, make the motor 32 drive rotating shaft 31 reverse rotation, and then make each component reset, then stop the motor 32.

[0055] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although in the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, for the foregoing embodiments of the technical solutions are recorded, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A papermaking wastewater recycling device for impregnated paper production, characterized by: The shell assembly (1) is internally provided with a filter transmission and collection mechanism (2) and a mixing mechanism (3), the mixing mechanism (3) is externally provided with a centrifugal filter mechanism (4) and a lifting mechanism (5) in sequence from top to bottom, and the lifting mechanism (5) is provided with a sealing mechanism (6) on the upper side. The lifting mechanism (5) comprises a fixed frame (51) fixedly arranged on the bottom of the lower shell (11), an avoiding channel (52) is vertically arranged in the center of the bottom of the fixed frame (51), a lower movable ring (53) is rotatably nested on the inner bottom of the fixed frame (51) through a bearing, a lifting plate (54) is vertically slidably attached to the inner top of the fixed frame (51), the lifting plate (54) is sleeved on the outer bottom of the rotating shaft (31) and is threadedly connected with the rotating shaft (31), an outer threaded sleeve (55) is vertically slidably sleeved on the outer side of the rotating shaft (31) and is fixedly arranged on the bottom of the lifting plate (54), a spring A (56), an upper movable ring (57) and a cross plate (58) are sequentially sleeved on the outer side of the outer threaded sleeve (55) from top to bottom, the spring A (56) is fixedly connected between the lifting plate (54) and the upper movable ring (57), the upper movable ring (57) is rotatably nested on the top of the cross plate (58) through a bearing, and the outer threaded sleeve (55) and the cross plate (58) are both provided with threads on the outer side and the inner side, respectively.

2. The papermaking wastewater recycling device for impregnated paper production according to claim 1, characterized in that: The shell assembly (1) comprises a lower shell (11), a support base (12) is fixedly arranged on the bottom of the lower shell (11), and an upper shell (13) is fixedly arranged on the top of the lower shell (11).

3. The papermaking wastewater recycling device for impregnated paper production according to claim 2, characterized in that: A drain pipe (14) is fixedly and penetratively arranged on the left bottom of the lower shell (11), and a water inlet pipe (15) and a dosing pipe (16) are sequentially fixedly and penetratively arranged on the right top of the upper shell (13) from top to bottom.

4. The papermaking wastewater recycling device for impregnated paper production according to claim 3, characterized in that: The filter transmission and collection mechanism (2) comprises a transmission pipe (21) fixedly and penetratively arranged on the right top of the lower shell (11) and communicating with the inner cavity of the upper shell (13), and further comprises a transmission channel (22) formed on the bottom of the lower shell (11).

5. The papermaking wastewater recycling device for impregnated paper production according to claim 4, characterized in that: The filter transmission and collection mechanism (2) further comprises a backing plate (23) fixedly arranged on the inner side of the support base (12), and a collection barrel (24) is placed on the top of the backing plate (23) and directly below the transmission channel (22).

6. The papermaking wastewater recycling device for impregnated paper production according to claim 5, characterized in that: The mixing mechanism (3) comprises a rotating shaft (31) rotatably nested on the top of the inner cavity of the upper shell (13) through a bearing, the outer bottom of the rotating shaft (31) is provided with threads, the mixing mechanism (3) further comprises a motor (32) fixedly arranged on the top of the upper shell (13) and drivingly connected with the rotating shaft (31), the rotating shaft (31) penetrates the lower shell (11) in the vertical direction and is rotatably connected with the lower shell (11) through a bearing, and a plurality of stirring rods (33) are uniformly fixedly arranged on the outer side of the rotating shaft (31).

7. The papermaking wastewater recycling device for impregnated paper production according to claim 6, characterized in that: The centrifugal filtering mechanism (4) comprises a rotating disc (41) fixedly sleeved on the outside of the rotating shaft (31), the rotating disc (41) blocks the bottom opening of the transmission pipe (21), and a plurality of cylindrical filter screens (42) are uniformly fixedly sleeved on the top of the rotating disc (41).

8. The papermaking wastewater recycling device for impregnated paper production according to claim 7, characterized in that: The sealing mechanism (6) comprises a sliding shaft (61) sliding through the horizontal plate (58) in the vertical direction, a sealing block (62) for sealing the transmission channel (22) is fixedly arranged at the top end of the sliding shaft (61), and a spring B (63) fixedly connected between the horizontal plate (58) and the sealing block (62) is sleeved on the outside of the sliding shaft (61).

9. The papermaking wastewater recycling device for impregnated paper production according to claim 8, characterized in that: The application further relates to a method for using the papermaking wastewater recycling device for impregnated paper production. S1, the impregnation tank cleaning wastewater is input into the upper shell (13) through the water inlet pipe (15), the bottom end of the transmission pipe (21) is blocked by the rotating disc (41), and the untreated impregnation tank cleaning wastewater cannot be discharged through the transmission pipe (21), then coagulant and flocculating agent are added into the upper shell (13) through the dosing pipe (16) in sequence, and the coagulant and the flocculating agent are mixed with the impregnation tank cleaning wastewater in sequence, so that the flocculating material in the cleaning wastewater is precipitated; S2, the motor (32) is started, the motor (32) drives the rotating shaft (31) to rotate after being started, the rotating shaft (31) drives the plurality of stirring rods (33) to continuously rotate in the upper shell (13) when rotating, and then the flocculating material is uniformly dispersed in the water body, the rotating shaft (31) drives the rotating disc (41) to rotate synchronously when rotating, and the rotating disc (41) drives the plurality of cylindrical filter screens (42) to pass through the bottom opening of the transmission pipe (21) in sequence when rotating; S3, when the plurality of cylindrical filter screens (42) pass through below the transmission pipe (21) in sequence, the cleaning wastewater in the upper shell (13) drives the flocculating material to continuously pass through the transmission pipe (21) and enter the inside of the plurality of cylindrical filter screens (42), and the water in the inside of the cylindrical filter screen (42) is filtered out from the inside of the cylindrical filter screen (42) and output into the inside of the lower shell (11) through the drain pipe (14) under the centrifugal action during the synchronous rotation of the plurality of cylindrical filter screens (42) and the rotating disc (41); S4, the rotating shaft (31) drives the lifting plate (54) guided by the fixing frame (51) to continuously move downward during the rotating process, the lifting plate (54) drives the external thread sleeve (55), the spring A (56), the upper movable ring (57) and the horizontal plate (58) to move downward synchronously when moving downward, in this process, the spring B (63) in the compressed state is continuously restored, and then the sealing block (62) always keeps the sealing of the transmission channel (22). S5, with the continuous lowering of the horizontal plate (58), the spring B (63) gradually recovers, at this time the treated cleaning wastewater is completely discharged, and the flocculation is left inside the plurality of cylindrical filter screens (42), and then with the continuous lowering of the horizontal plate (58), the sealing block (62) is lowered synchronously with the horizontal plate (58), and then the sealing of the transmission channel (22) is removed; S6, the horizontal plate (58) is in contact with the top of the avoidance channel (52) due to the continuous lowering, at this time the top surface of the sealing block (62) is flush with the bottom surface of the lower shell (11), and due to the blocking of the avoidance channel (52), the horizontal plate (58) cannot lower the sealing block (62) again, and at the same time, with the continuous lowering of the lifting plate (54), the lifting plate (54) compresses the spring A (56), and at the same time drives the outer threaded sleeve (55) to move downward inside the horizontal plate (58); S7, the outer threaded sleeve (55) drives the horizontal plate (58) to rotate when moving downward, and the horizontal plate (58) drives the sealing block (62) to rotate synchronously through the sliding shaft (61) when rotating, in this process, the flocculation that may exist on the top surface of the sealing block (62) is scraped off by the inner wall of the transmission channel (22), and after the sealing block (62) is completely moved away from the bottom of the transmission channel (22), the rotating speed of the motor (32) is reduced; S8, when the plurality of cylindrical filter screens (42) pass above the transmission channel (22) again in sequence, at this time, under the action of gravity, the flocculation inside the plurality of cylindrical filter screens (42) falls into the collection barrel (24) and is collected, after the flocculation is completely collected, the motor (32) drives the rotating shaft (31) to rotate in the opposite direction, and then the components are reset, and then the motor (32) is stopped.

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