Wastewater circulating device for paperboard production

Abstract

The utility model discloses a waste water circulating device for paperboard production, which comprises a sewage tank, a filtering and separating device and a controller, the sewage tank is arranged above the filtering and separating device, and the controller is arranged on the front side of the sewage tank and is in telecommunication connection with the filtering and separating device; the filtering and separating device further comprises a pretreatment device, a filtering device and a precipitation and separation device, the pretreatment device is arranged below the sewage tank, the filtering device is arranged on the right side of the pretreatment device, and the precipitation and separation device is arranged on the right side of the filtering device. The device has the functions of reducing the energy consumption generated by heating and treating sewage, saving resources and reducing the production cost; water in the impurities is prevented from being hard to clean after being evaporated, and dust generated in the cleaning process is prevented from polluting the environment; the workload of subsequent devices is reduced, impurities are classified and treated, and the sewage treatment effect of the device is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of wastewater recycling devices, and in particular relates to a wastewater recycling device for paperboard production. Background Technology

[0002] During the paperboard production process, a lot of wastewater mixed with pulp and paper scraps is generated. After recycling treatment, this wastewater can be recycled back into the production line for reuse.

[0003] Existing technologies, such as the wastewater recovery device for a cardboard production line disclosed in Chinese Patent (CN215856937U), include a base plate, a wastewater tank, and an inclined plate. A heater is fixedly installed on the right side surface of the wastewater tank, and a heating pipe is fixedly installed on the left side surface of the heater. A connecting pipe is fixedly installed at the end of the heating pipe away from the heater. A rotary motor is fixedly installed on the right side surface of the wastewater tank, and a movable threaded rod is fixedly installed at the output end of the rotary motor. A movable frame is movably sleeved on the outside of the movable threaded rod, and a movable scraper is fixedly installed on the outer surface of the movable frame. This wastewater recovery device for cardboard production lines heats the wastewater by activating the heater, causing the internal moisture to evaporate. The evaporated water vapor contacts the inclined plate and drips into the recovery box under the action of the protruding pointed strip, thus greatly improving the efficiency of solid-liquid separation of wastewater.

[0004] This method has the following drawbacks: First, it uses heated wastewater to separate fibrous impurities, which is energy-intensive in practice. The heat from water vapor evaporation and condensation is dissipated into the air, resulting in low energy efficiency. Second, after evaporation, the fibrous impurities adhere to the inner wall of the device, making it difficult to completely remove them with a scraper. Furthermore, the process of removing impurities generates dust, polluting the working environment. Third, the wastewater contains a small amount of paper scraps and other debris. The device lacks a pretreatment mechanism to remove these debris, leading to low efficiency in separating and recycling wastewater.

[0005] Therefore, this paper provides a wastewater recycling device for paperboard production. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model discloses a wastewater recycling device for cardboard production. This device employs physical and chemical filtration to separate impurities from the wastewater, reducing energy consumption from heating the wastewater, saving resources, and lowering production costs. After wastewater filtration, the device automatically cleans the separated impurities to prevent them from becoming difficult to remove after moisture evaporates, thus eliminating dust pollution during the cleaning process. An additional pretreatment step filters out larger impurities such as paper scraps and strips from the wastewater, reducing the workload of subsequent devices and classifying the impurities to improve the device's wastewater treatment efficiency.

[0007] To achieve the above-mentioned technical effects, this utility model provides a wastewater recycling device for paperboard production, including a wastewater tank, a filtration and separation device, and a controller. The wastewater tank is located above the filtration and separation device, and the controller is located in front of the wastewater tank and is electrically connected to the filtration and separation device. The filtration and separation device also includes a pretreatment device, a filtration device, and a sedimentation and separation device. The pretreatment device is located below the wastewater tank, the filtration device is located to the right of the pretreatment device, and the sedimentation and separation device is located to the right of the filtration device.

[0008] Preferably, a water distribution trough is also provided at the bottom left side of the sewage tank.

[0009] Preferably, the pretreatment device further includes a mounting base, a filter rod, and a cleaning mechanism a, with the filter rod located on the right side of the mounting base and the cleaning mechanism a located on the left side of the filter rod.

[0010] Preferably, the mounting base also includes a vibration motor and a spring base, with the vibration motor located on the left side of the mounting base and the spring base located below the mounting base.

[0011] Preferably, the cleaning mechanism a further includes a telescopic electric cylinder, a magnet, and a cleaning plate. The telescopic electric cylinder is located on the left side of the filter rod, the magnet is located at the right output end of the telescopic electric cylinder and is slidably installed inside the filter rod, and the cleaning plate is slidably connected to the filter rod and magnetically attracted to the magnet.

[0012] Preferably, the filtration device further includes a filter plate, a cleaning mechanism b, and a connecting hopper, with the filter plate positioned below the filter rod, the cleaning mechanism positioned above the filter plate, and the connecting hopper positioned to the right of the filter plate.

[0013] Preferably, the filter plate has a rough textured surface.

[0014] Preferably, the cleaning mechanism b further includes a drive motor, a drive wheel, a driven wheel, a transmission belt, a screw, a cleaning block, and a slag storage box. The drive motor is located on the rear side of the filter plate, the drive wheel is located at the output end of the front side of the drive motor, the driven wheel is located on the left side of the drive wheel, the drive wheel and the driven wheel are connected by a transmission belt, the screw is located on the front side of the drive wheel and the driven wheel respectively, the cleaning block made of flexible material is located above the filter plate and is threadedly connected to the screw, and the slag storage box is located on the front side below the filter plate.

[0015] Preferably, the sedimentation separation device further includes a dosing tank, a stirring tank, an observation tube, a slag discharge pipe, and a drain pipe. The dosing tank is located above the stirring tank. A transparent observation tube is located on the right side of the stirring tank. The upper end of the observation tube is connected to the top of the stirring tank through a pipe, and the lower end of the observation tube is connected to the bottom of the stirring tank through a pipe. The slag discharge pipe is located below the stirring tank, and the drain pipe is located to the right of the slag discharge pipe.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The device is equipped with a filtration and separation unit that uses physical and chemical filtration to separate impurities from the wastewater, reducing energy consumption from heating the wastewater, saving resources, and lowering production costs. Cleaning mechanisms A and B automatically clean the separated impurities after wastewater filtration, preventing them from becoming difficult to remove after moisture evaporates, and eliminating dust pollution during the cleaning process. The addition of a pretreatment process filters out larger impurities such as paper scraps and strips from the wastewater, reducing the workload of subsequent devices, and classifying the impurities to improve the device's wastewater treatment efficiency. Attached Figure Description

[0018] Figure 1 This is a front view of the present invention;

[0019] Figure 2 This is the left view of this utility model;

[0020] Figure 3 yes Figure 2 A sectional view of section a.

[0021] Figure 4 yes Figure 3 A partial schematic diagram of b in the middle;

[0022] Figure 5 This is an isometric view of the present invention;

[0023] Figure 6 yes Figure 5 A partial schematic diagram of c in the middle;

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Wastewater tank; 2. Controller; 3. Diversion trough; 4. Mounting base; 5. Filter rod; 6. Vibration motor; 7. Spring base; 8. Telescopic electric cylinder; 9. Magnet; 10. Cleaning plate; 11. Filter plate; 12. Connecting hopper; 13. Drive motor; 14. Drive wheel; 15. Driven wheel; 16. Transmission belt; 17. Screw; 18. Cleaning block; 19. Slag storage tank; 20. Dosing tank; 21. Mixing tank; 22. Observation tube; 23. Slag discharge pipe; 24. Drainage pipe. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. Example 1

[0027] like Figures 1 to 6 As shown, the prior art in this embodiment has the following problems: The inventors have found the following defects in the prior art: First, this method uses heating wastewater to separate fibrous impurities from the wastewater. In actual use, this method has high energy consumption, and the heat from water vapor evaporation and condensation is dissipated into the air, resulting in low energy efficiency of the device; Second, after evaporation, the fibrous impurities stick to the inner wall of the device, and it is difficult to completely scrape the impurities off with a scraper. In addition, dust will be generated during the scraping process, polluting the working environment; Third, the wastewater contains a small amount of paper scraps and other debris. The device does not have a pretreatment mechanism to remove these debris first, resulting in low efficiency of the device in separating and recycling wastewater.

[0028] Therefore, the inventor provides a wastewater recycling device for paperboard production, including a wastewater tank 1, a filtration and separation device, and a controller 2. The wastewater tank 1 is located above the filtration and separation device, and the controller 2 is located in front of the wastewater tank 1 and is electrically connected to the filtration and separation device. The filtration and separation device also includes a pretreatment device, a filtration device, and a sedimentation and separation device. The pretreatment device is located below the wastewater tank 1, the filtration device is located to the right of the pretreatment device, and the sedimentation and separation device is located to the right of the filtration device.

[0029] Using the above scheme, the sewage falls from sewage tank 1, passes through a pretreatment device to filter out larger paper scraps, then passes through a filtration device to separate and filter out most of the sludge and fiber impurities, and finally enters a sedimentation separation device where flocculant is added and stirred to cause fine impurities to settle down, and finally is discharged separately from the water for recycling. Example 2

[0030] like Figures 1 to 6 As shown:

[0031] Furthermore, a water distribution trough 3 is also provided at the bottom left side of the sewage tank 1;

[0032] Furthermore, the pretreatment device also includes a mounting base 4, a filter rod 5, and a cleaning mechanism a. The filter rod 5 is located on the right side of the mounting base 4, and the cleaning mechanism a is located on the left side of the filter rod 5.

[0033] Furthermore, the mounting base 4 also includes a vibration motor 6 and a spring base 7. The vibration motor 6 is located on the left side of the mounting base 4, and the spring base 7 is located below the mounting base 4.

[0034] Furthermore, the cleaning mechanism a also includes a telescopic electric cylinder 8, a magnet 9, and a cleaning plate 10. The telescopic electric cylinder 8 is located on the left side of the filter rod 5, the magnet 9 is located on the right output end of the telescopic electric cylinder 8 and is slidably installed inside the filter rod 5, and the cleaning plate 10 is slidably connected to the filter rod 5 and magnetically attracted to the magnet 9.

[0035] In this process, wastewater flows from wastewater tank 1 through water distribution channel 3 and passes through filter rod 5. Larger paper scraps and impurities in the wastewater are blocked by filter rod 5 and accumulate on filter rod 5. After the wastewater is treated, the telescopic electric cylinder 8 can be started by controller 2. The telescopic electric cylinder 8 drives the cleaning plate 10 through magnet 9 to push the impurities accumulated on the filter rod 5 to the front right side of filter rod 5. At the same time, the vibration motor 6 is started, causing the mounting base 4 to vibrate on the spring base 7, shaking off the impurities adhering to the cleaning plate 10. This completes the pretreatment and cleaning of paper scraps. In this step, the device pre-treats the larger paper scraps in the wastewater, reducing the burden on subsequent devices and improving the filtration efficiency. Example 3

[0036] like Figures 1 to 6 As shown:

[0037] Furthermore, the filtration device also includes a filter plate 11, a cleaning mechanism b, and a connecting hopper 12. The filter plate 11 is located below the filter rod 5, the cleaning mechanism is located above the filter plate 11, and the connecting hopper 12 is located on the right side of the filter plate 11.

[0038] Furthermore, the filter plate 11 has a rough textured surface.

[0039] Furthermore, the cleaning mechanism b also includes a drive motor 13, a drive wheel 14, a driven wheel 15, a transmission belt 16, a screw 17, a cleaning block 18, and a slag storage box 19. The drive motor 13 is located on the rear side of the filter plate 11, the drive wheel 14 is located on the front output end of the drive motor 13, the driven wheel 15 is located on the left side of the drive wheel 14, the drive wheel 14 and the driven wheel 15 are connected by the transmission belt 16, the screw 17 is located on the front side of the drive wheel 14 and the driven wheel 15 respectively, the cleaning block 18 made of flexible material is located above the filter plate 11 and is threadedly connected to the screw 17, and the slag storage box 19 is located on the front side below the filter plate 11.

[0040] In this process, the wastewater filtered by the pretreatment device falls onto the filter plate 11 and flows down to the right. During this process, most of the impurities in the wastewater are adsorbed and trapped on the surface of the filter plate 11. The filtered wastewater is discharged to the right from the connecting hopper 12 into the sedimentation and separation device. The impurities accumulated on the filter plate 11 can be removed by starting the drive motor 13 to drive the drive wheel 14, which transmits the power to the driven wheel 15 via the conveyor belt. This causes the screw 17 to drive the cleaning block 18 to move from back to front, pushing the impurities accumulated on the filter plate 11 together with the impurities cleaned off the pretreatment device into the slag box 19 below. This method can clean the filtered impurities immediately after the wastewater is filtered, preventing the dried impurities from sticking to the outer wall of the device and eliminating dust pollution caused by cleaning the dried impurities. Example 4

[0041] like Figures 1 to 6 As shown:

[0042] Furthermore, the sedimentation separation device also includes a dosing tank 20, a stirring tank 21, an observation tube 22, a slag discharge pipe 23, and a drain pipe 24. The dosing tank 20 is located above the stirring tank 21. A transparent observation tube 22 is located on the right side of the stirring tank 21. The upper end of the observation tube 22 is connected to the top of the stirring tank 21 through a pipe, and the lower end of the observation tube 22 is connected to the bottom of the stirring tank 21 through a pipe. The slag discharge pipe 23 is located below the stirring tank 21, and the drain pipe 24 is located on the right side of the slag discharge pipe 23.

[0043] In this process, wastewater is treated by a pretreatment device and a filtration device, and then collected in a mixing tank 21. Flocculant is added to the mixing tank 21 from a dosing tank 20. After stirring in the mixing tank 21, the impurities in the wastewater coagulate and precipitate. After the coagulation and separation of the wastewater is observed through the observation pipe 22, the slag discharge pipe 23 is opened through the controller 2 to discharge the coagulated impurities for recycling. After the impurities are observed to have been discharged through the observation pipe 22, the slag discharge pipe 23 is closed, and the drain pipe 24 is opened to discharge the treated water into the recycling water equipment. By adopting the above scheme, the energy consumption of the wastewater treatment and recycling device is reduced, resources are saved, and production costs are reduced.

[0044] The working principle of this utility model:

[0045] Wastewater falls from wastewater tank 1 and passes through filter rod 5. Larger paper scraps and impurities in the wastewater are blocked by filter rod 5 and accumulate on filter rod 5. After the wastewater is treated, the telescopic electric cylinder 8 can be started by controller 2. The telescopic electric cylinder 8 drives the cleaning plate 10 through magnet 9 to push the impurities accumulated on the filter rod 5 to the front right side of filter rod 5. At the same time, the vibration motor 6 is started, causing the mounting base 4 to vibrate on the spring base 7, shaking off the impurities attached to the cleaning plate 10. This completes the pretreatment and cleaning of paper scraps. In this step, the device pre-treats the larger paper scraps in the wastewater, reducing the burden on subsequent devices and improving the filtration efficiency.

[0046] After being filtered by the pretreatment device, the wastewater falls onto the filter plate 11 and flows down to the right. During this process, most of the impurities in the wastewater are adsorbed and trapped on the surface of the filter plate 11. The filtered wastewater flows to the right from the connecting hopper 12 into the sedimentation and separation device. The impurities accumulated on the filter plate 11 can be removed by starting the drive motor 13 to drive the drive wheel 14, which transmits power to the driven wheel 15 via the conveyor belt. This causes the screw 17 to drive the cleaning block 18 to move from back to front, pushing the impurities accumulated on the filter plate 11 together with the impurities cleaned off the pretreatment device into the slag box 19 below. This method can clean the filtered impurities immediately after the wastewater is filtered, preventing the dried impurities from sticking to the outer wall of the device and eliminating dust pollution caused by cleaning the dried impurities.

[0047] The wastewater is collected in the mixing tank 21. Flocculant is added to the mixing tank 21 from the dosing tank 20. After being stirred in the mixing tank 21, the impurities in the wastewater coagulate and precipitate. After the wastewater coagulation and separation is observed through the observation pipe 22, the slag discharge pipe 23 is opened through the controller 2 to discharge the coagulated impurities for recycling. After the impurities are observed to be emptied through the observation pipe 22, the slag discharge pipe 23 is closed and the drain pipe 24 is opened to discharge the treated water into the recycling water equipment. By adopting the above scheme, the energy consumption of the wastewater treatment and recycling equipment is reduced, resources are saved, and production costs are reduced.

[0048] This concludes the description of the working principle of the device.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paperboard production wastewater recycling device, comprising a sewage tank (1), a filtering separation device, a controller (2), the sewage tank (1) is arranged above the filtering separation device, and the controller (2) is arranged between the front side of the sewage tank (1) and the filtering separation device and is electrically connected, characterized in that: The filter separation device further comprises a pretreatment device, a filter device and a sedimentation separation device. ​ 2. A wastewater recycling device for paperboard production according to claim 1, characterized in that: The sewage tank (1) is further provided with a water distribution tank (3) on the left bottom.

3. A paperboard production wastewater recycling device according to claim 1, characterized in that: The pretreatment device further comprises a mounting seat (4), a filter rod (5) and a cleaning mechanism a.

4. A paperboard production wastewater recycling device according to claim 3, characterized in that: The mounting seat (4) further comprises a vibration motor (6) and a spring base (7).

5. A paperboard production wastewater recycling device according to claim 3, characterized in that: The cleaning mechanism a further comprises a telescopic electric cylinder (8), a magnet (9) and a cleaning plate (10).

6. A paperboard production wastewater recycling device according to claim 1, characterized in that: The filter device further comprises a filter plate (11), a cleaning mechanism b and a connecting hopper (12).

7. A paperboard production wastewater recycling device according to claim 6, characterized in that: The filter plate (11) is provided with rough concave-convex lines on the top.

8. A paperboard production wastewater recycling device according to claim 6, characterized in that: The cleaning mechanism b further comprises a driving motor (13), a driving wheel (14), a driven wheel (15), a transmission belt (16), a screw rod (17), a cleaning block (18) and a residue storage tank (19).

9. A paperboard production wastewater recycling device according to claim 1, characterized in that: The sedimentation separation device further comprises a dosing tank (20), a stirring barrel (21), an observation tube (22), a residue discharge pipe (23) and a water discharge pipe (24). The dosing tank (20) is arranged above the stirring barrel (21).

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