Wastewater treatment device for papermaking

Abstract

The invention discloses a papermaking wastewater treatment device which comprises a filtering mechanism, a calcium removal mechanism and a replacement mechanism, the calcium removal mechanism comprises a top cover, a placement pool, a calcium removal motor, a calcium removal screw rod, a crushing plate, a spring rod, a barrier plate, a scaling pipe, a spoiler and a calcium removal box, and the top cover is fixedly connected with the placement pool; an output shaft of the calcium removal motor is fixedly connected with a calcium removal screw rod, the calcium removal screw rod is in threaded connection with a crushing plate, and the crushing plate is in sliding connection with the interior of the calcium removal box. By arranging the filtering mechanism, scale in the device can be generated in a scaling pipe in advance, so that the content of substances capable of scaling in wastewater is reduced, the effect of reducing the scaling amount on the electrode is achieved, the effect of prolonging the service time of the electrode is achieved, and the filtering efficiency of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a wastewater treatment device for papermaking. Background Technology

[0002] Papermaking wastewater treatment equipment is an environmentally friendly device that uses electrochemical oxidation as its core to remove pollutants such as fibers, recalcitrant organic matter, and calcium salts from wastewater, achieving compliant discharge or reuse.

[0003] Existing devices of this type have the problem that impurities adhere to the surface of the removal mechanism when removing surface impurities. For example, a waste paper wastewater treatment device disclosed in Chinese Patent Publication No. CN119240872B uses a fourth limiting body to drive a second scraper to scrape impurities into a movable receiving shell for collection. However, in actual use, due to the viscosity of water, some impurities adhere to the second scraper when it scrapes the impurities into the movable receiving shell. Furthermore, scale buildup occurs on the electrodes during use, affecting their efficiency and requiring regular cleaning. Therefore, this application proposes a wastewater treatment device for papermaking. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a wastewater treatment device for papermaking.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A wastewater treatment device for papermaking includes a filtration mechanism, a calcium removal mechanism, and a replacement mechanism. The calcium removal mechanism includes a top cover, a placement tank, a calcium removal motor, a calcium removal screw, a crushing plate, a spring rod, a baffle plate, a scaling pipe, a flow baffle plate, and a calcium removal box.

[0007] The top cover is fixedly connected to the placement pool, the output shaft of the calcium removal motor is fixedly connected to the calcium removal screw, the calcium removal screw is threadedly connected to the crushing plate, the crushing plate is slidably connected to the inside of the calcium removal box, and the flow baffle is fixedly connected to one end of the scaling pipe.

[0008] One end of the scaling tube is fixedly connected to the crushing plate, and the other end of the scaling tube is fixedly connected to the calcium removal box. The calcium removal screw is rotatably and sealingly connected to the calcium removal box. The second spring rod is fixedly connected to the side wall of the calcium removal box, and the rear side wall of the calcium removal box is slidably connected to the baffle plate.

[0009] Preferably, the filtration mechanism includes a tension spring rod, a tension spring, a guide rod, a pressure rod, a sleeve, and a bottom filter screen;

[0010] The lower end of the tension spring rod is fixedly connected to the inner bottom of the placement pool, the lower end of the sleeve is fixedly connected to the inner bottom of the placement pool, the bottom filter screens are fixedly connected to each other, the bottom filter screens are slidably connected to the guide rod, and one end of the tension spring is fixedly connected to the bottom filter screen.

[0011] Preferably, the pressure rod is slidably connected to the sleeve, the bottom end of the pressure rod is in contact with the upper surface of the bottom filter screen, and the other end of the tension spring is fixedly connected to the top cover.

[0012] Preferably, the replacement mechanism includes a replacement box, a linkage plate, a lifting screw, a lifting guide rod, a water inlet pipe, a transmission box, a cylinder, a lifting motor, a transmission gear set, and a linkage bearing;

[0013] The replacement box is fixedly connected to the side wall of the placement pool. A filter block is fixedly connected inside the linkage plate. The linkage plate is slidably connected to the lifting guide rod and threadedly connected to the lifting screw.

[0014] Preferably, the water inlet pipe is fixedly connected to the side wall of the placement tank, and the position of the water inlet pipe corresponds to the position of the filter block.

[0015] Preferably, the lower end of the lifting screw is slidably connected to a bevel gear in the transmission gear set, and the cylinder is fixedly connected to the bottom of the placement pool.

[0016] Preferably, the output shaft of the cylinder is fixedly connected to the linkage bearing, and the transmission gear set consists of a pair of meshing bevel gears. One bevel gear of the transmission gear set is slidably connected to the bottom end of the lifting screw through a spline, and the other bevel gear of the transmission gear set is fixedly connected to the output shaft of the lifting motor.

[0017] Preferably, a dust cover is fixedly connected to the outer wall of the placement pool, and a belt drive assembly is provided inside the dust cover.

[0018] Preferably, the belt drive assembly consists of a pair of pulleys and a drive belt, with a tensioning pulley fixedly connected to one of the pulleys, and a cleaning belt provided on the tensioning pulley.

[0019] Preferably, the tensioning wheel is rotatably connected to the inside of the top cover, the inside of the top cover contains a collection box, a water pump and a water motor are fixedly connected to the side wall of the placement pool, and a pin is fixedly connected to the lower end of the pressure rod.

[0020] The present invention has the following beneficial effects:

[0021] 1. By setting up a filtration mechanism, scale can be generated in the scale-forming tube in advance, thereby reducing the content of scale-forming substances in the wastewater, thus reducing the amount of scale on the electrodes, thereby extending the service life of the electrodes and improving the filtration efficiency of the device.

[0022] 2. By setting up a calcium removal mechanism, the scale that forms in this device can be broken down and collected, thus enabling the reuse of the scale-forming tube. During use, the scale-forming tube is squeezed, thereby breaking down the scale. This extends the working time of the scale-forming tube and prevents it from being blocked by scale, thereby reducing the calcium content in the water and making the wastewater easier to treat.

[0023] 3. By setting a bottom filter, residual floating matter in this device will be filtered out of the wastewater and collected at the same time, thus avoiding the problem of impurities sticking to the surface of the removal mechanism, which exists in other similar devices. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a wastewater treatment device for papermaking proposed in this invention.

[0025] Figure 2 This is a schematic diagram of scaling on the side of a wastewater treatment device for papermaking proposed in this invention.

[0026] Figure 3 for Figure 2 Enlarged view at point A;

[0027] Figure 4 This is a schematic diagram showing the location of the cleaning belt in a wastewater treatment device for papermaking according to the present invention.

[0028] Figure 5 This is a schematic diagram of the cleaning belt of a wastewater treatment device for papermaking proposed in this invention;

[0029] Figure 6 This is a schematic diagram of the collection box mechanism of a wastewater treatment device for papermaking proposed in this invention;

[0030] Figure 7 This is a schematic diagram showing the location of the calcium removal motor in a wastewater treatment device for papermaking according to the present invention.

[0031] Figure 8 for Figure 7 Schematic diagram at point B;

[0032] Figure 9 for Figure 7 Schematic diagram at point C;

[0033] Figure 10 This is a schematic diagram showing the position of the linkage plate in a wastewater treatment device for papermaking proposed in this invention.

[0034] Figure 11 This is a schematic diagram of the bottom filter screen of a wastewater treatment device for papermaking proposed in this invention;

[0035] Figure 12 This is a schematic diagram of the structure of the crushing plate of a wastewater treatment device for papermaking proposed in this invention;

[0036] Figure 13 This is a schematic diagram showing the position of the baffle plate in a wastewater treatment device for papermaking proposed in this invention.

[0037] Figure 14 This is a schematic diagram showing the location of the scaling pipe in a wastewater treatment device for papermaking according to the present invention.

[0038] Figure 15 This is a schematic diagram of the scaling pipe in a wastewater treatment device for papermaking according to the present invention.

[0039] Figure 16 This is a schematic diagram of the structure of a filter block in a wastewater treatment device for papermaking proposed in this invention;

[0040] Figure 17 This is a schematic diagram showing the position of the pin in a wastewater treatment device for papermaking proposed in this invention.

[0041] In the diagram: 1. Top cover, 2. Collection box, 3. Inlet pipe, 4. Dust cover, 5. Cleaning belt, 6. Transmission box, 7. Decalcification motor, 8. Pumping motor, 9. Water pump, 10. Placement tank, 11. Scale pipe, 12. Baffle plate, 13. Lifting screw, 14. Lifting guide rod, 15. Tensioning wheel, 16. Belt drive assembly, 17. Cathode, 18. Guide rod, 19. Tension spring, 20. Tension spring rod, 21. Decalcification box, 22. Downward pressure rod, 23. Sleeve, 24. Replacement box, 25. Transmission gear set, 26. Linkage bearing, 27. Cylinder, 28. Lifting motor, 29. Bottom filter screen, 30. Decalcification screw, 31. Crushing plate, 32. Spring rod, 33. Baffle plate, 34. Linkage plate, 35. Filter block, 36. Pin. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0043] Example 1:

[0044] A wastewater treatment device for papermaking includes a filtration mechanism, a calcium removal mechanism, and a replacement mechanism. The calcium removal mechanism includes a top cover 1, a placement tank 10, a calcium removal motor 7, a calcium removal lead screw 30, a crushing plate 31, a spring rod 32, a baffle plate 33, a scaling pipe 11, a flow baffle plate 12, and a calcium removal box 21.

[0045] The top cover 1 is fixedly connected to the placement tank 10, the output shaft of the calcium removal motor 7 is fixedly connected to the calcium removal screw 30, the calcium removal screw 30 is threadedly connected to the crushing plate 31, the crushing plate 31 is slidably connected to the inside of the calcium removal box 21, and the flow baffle 12 is fixedly connected to one end of the scaling pipe 11.

[0046] One end of the scaling tube 11 is fixedly connected to the crushing plate 31, and the other end of the scaling tube 11 is fixedly connected to the calcium removal box 21. The calcium removal screw 30 is rotatably and sealingly connected to the calcium removal box 21. The second spring rod 32 is fixedly connected to the side wall of the calcium removal box 21, and the rear side wall of the calcium removal box 21 is slidably connected to the baffle plate 33. The lower end of the pressure rod 22 is fixedly connected to a pin 36.

[0047] The wastewater is rich in calcium ions, sulfate ions, carbon ions, etc., brought in from waste paper fillers, raw materials and raw water. In the cathode area of ​​electrochemical treatment, the reduction reaction will continuously generate hydroxide ions, creating a strongly alkaline environment in the local area. This promotes the rapid combination of calcium ions with carbonate and sulfate ions to form insoluble calcium carbonate and calcium sulfate crystals. At the same time, suspended solids such as fibrous flocs and ink particles in the wastewater will be adsorbed on the crystal surface to form a complex scale layer. The negatively charged characteristic of the cathode will attract cations and neutral pollutants to migrate in a directional manner. In addition, the rough area of ​​the electrode surface provides crystal nucleation sites, which ultimately leads to the rapid accumulation of scale mainly at the cathode and in dead corners of water flow.

[0048] refer to Figure 7 In this device, the calcium removal box 21 is located near the cathode 17, and it divides the interior of the placement tank 10 into two areas, which are connected by a flexible scaling tube 11 with a rough inner surface. Therefore, scaling substances in the wastewater accumulate on the cathode 17 through the scaling tube 11. Due to the rough inner wall of the scaling tube 11, scale forms first on the tube, thereby reducing the content of scaling substances in the wastewater and thus reducing the scale formation on the cathode 17.

[0049] When there is a large amount of scale on the scaling pipe 11, the descaling motor 7 can be turned on. The rotation of the output shaft of the descaling motor 7 will cause the descaling screw 30 to rotate. Since the crushing plate 31 is threadedly connected to the descaling screw 30, the rotation of the descaling screw 30 will cause the crushing plate 31 to move, thereby squeezing the scaling pipe 11 and breaking up the scale inside the scaling pipe 11. Since the scaling pipe 11 is in a slightly tilted state during installation, the scale will be restored to its original position by the crushing plate 31. Figure 12 When it is in a certain state, it will flow into the calcium removal box 21 along the slope, thus completing the collection of scale.

[0050] refer to Figure 13 The rear side wall of the calcium box 21 is slidably connected to the baffle plate 33, and then refer to... Figure 14Both the baffle plate 33 and the crushing plate 31 have an inclined surface. When the crushing plate 31 breaks up the scale, it moves towards the interior of the descaling box 21, causing the two inclined surfaces to come into contact with each other. Under the action of the inclined surfaces, the baffle plate 33 will press down, thus blocking the outlet at the other end of the scale-forming pipe 11. (Refer to the attached diagram in the instruction manual.) Figure 15 The flow-blocking plate 12 has a notch, and the scaling pipe 11 also has a notch at the end near the baffle plate 33. When the breaking plate 31 breaks up the scale, the flow-blocking plate 12, which is fixedly connected to the breaking plate 31, will also move, thereby aligning the notch on the flow-blocking plate 12 with the notch on the scaling pipe 11, thus allowing the scale to fall off. It should be noted that the end near the breaking plate 31 is the lower end of the scaling pipe 11.

[0051] refer to Figure 13 A guide rod is fixedly connected to the spring rod 32, and a baffle plate 33 is slidably connected to the guide rod. At the same time, a spring for resetting is located below the baffle plate 33 in the spring rod 32. The surface of the spring is made of insulating material to achieve the resetting of the baffle plate 33.

[0052] Example 2: The filtration mechanism includes a tension spring rod 20, a tension spring 19, a guide rod 18, a pressing rod 22, a sleeve 23, and a bottom filter screen 29. The lower end of the tension spring rod 20 is fixedly connected to the inner bottom of the placement tank 10, the lower end of the sleeve 23 is fixedly connected to the inner bottom of the placement tank 10, the bottom filter screens 29 are fixedly connected to each other, the bottom filter screens 29 are slidably connected to the guide rod 18, and one end of the tension spring 19 is fixedly connected to the bottom filter screen 29.

[0053] The pressure rod 22 is slidably connected to the sleeve 23, and the bottom end of the pressure rod 22 contacts the upper surface of the bottom filter screen 29. The other end of the tension spring 19 is fixedly connected to the top cover 1. The belt drive assembly 16 consists of a pair of pulleys and a drive belt. A tension pulley 15 is fixedly connected to one of the pulleys, and a cleaning belt 36 is provided on the tension pulley 15.

[0054] The tension wheel 15 is rotatably connected to the inside of the top cover 1. The inside of the top cover 1 is a collection box 2. The side wall of the placement pool 10 is fixedly connected to a water pump 8 and a water pump 9.

[0055] During the treatment process, water molecules or electrolyte ions decompose into gas under the influence of an electric field, which agitates impurities in the wastewater, causing them to float to the surface. At this point, the pressure rod 22 can be rotated. The bottom end of the pressure rod 22 has a pin 36. An L-shaped groove is formed on the sleeve 23, and the pin 36 is located in the transverse portion of the groove on the sleeve 23. At this time, the position of the bottom filter screen 29 is restricted by the pin 36, thus ensuring its position is as follows: Figure 11 As shown, it should be noted that the pin 36 is fixedly connected to the pressure rod 22.

[0056] When pin 36 is rotated to the vertical part of the L-shaped groove, pin 36 can move vertically upward because the vertical part passes through sleeve 23 in the vertical direction. At this time, the force on tension spring 19 can be released. Since guide rod 18 is slidably connected to bottom filter screen 29, and tension spring 19 is fixedly connected to bottom filter screen 29.

[0057] Therefore, the tension spring 19 will pull the bottom filter 29 upward. Since the bottom filter 29 covers the bottom of the device, it will perform secondary filtration of the wastewater, thereby achieving secondary collection of impurities in the wastewater.

[0058] Example 3: The replacement mechanism includes a replacement box 24, a linkage plate 34, a lifting screw 13, a lifting guide rod 14, a water inlet pipe 3, a transmission box 6, a cylinder 27, a lifting motor 28, a transmission gear set 25, and a linkage bearing 26. The replacement box 24 is fixedly connected to the side wall of the placement pool 10. A filter block 36 is fixedly connected inside the linkage plate 34. The linkage plate 34 is slidably connected to the lifting guide rod 14, and the linkage plate 34 is threadedly connected to the lifting screw 13.

[0059] The inlet pipe 3 is fixedly connected to the side wall of the placement tank 10, and the position of the inlet pipe 3 corresponds to the position of the filter block 36. The lower end of the lifting screw 13 is slidably connected to a bevel gear in the transmission gear set 25, and the cylinder 27 is fixedly connected to the bottom of the placement tank 10. A dust cover 4 is fixedly connected to the outer side wall of the placement tank 10, and a belt drive assembly 16 is installed inside the dust cover 4.

[0060] The output shaft of cylinder 27 is fixedly connected to the linkage bearing 26. The transmission gear set 25 consists of a pair of meshing bevel gears. One bevel gear of the transmission gear set 25 is slidably connected to the bottom end of the lifting screw 13 via a spline. The bevel gear of the other transmission gear set 25 is fixedly connected to the output shaft of the lifting motor 28.

[0061] refer to Figure 10 The lifting motor 28 is always on, and its output shaft will always rotate. The position of the cylinder 27 is fixed, and the linkage bearing 26 is fixedly connected to its output shaft. A bevel gear in the transmission gear set 25 is rotatably connected to it and slidably connected to the lifting screw 13. The slidable connection part is splined. Therefore, the bevel gear can be driven up and down by the output shaft of the cylinder 27, thereby realizing up and down movement.

[0062] After a period of use, the efficiency of a filter block 35 will decrease due to the large amount of impurities it filters. At this time, cylinder 27 can be activated, and the output shaft of cylinder 27 extends, which drives the linkage bearing 26 to move downward, thereby driving one of the bevel gears in the transmission gear set 25 to move downward. Another bevel gear in the transmission gear set 25 is fixedly connected to the output shaft of the lifting motor 28, so it is always rotating. When the bevel gear rotatably connected to the linkage bearing 26 is pressed down, the two bevel gears mesh with each other, thereby transmitting their power to the lifting screw 13. This causes the lifting screw 13 to lift the linkage plate 34 upward, raising its position, thus realizing the replacement of multiple filter blocks 35.

[0063] At the same time, the rotation of the output shaft of the lifting motor 28 will cause the belt drive assembly 16 to operate. One of the pulleys in the belt drive assembly 16 is fixedly connected to the output shaft of the lifting motor 28. When the output shaft of the lifting motor 28 rotates, it will cause the pulley to rotate. Through the drive belt, the pulley fixedly connected to the tension wheel 15 will also rotate, thereby causing the cleaning belt 5 to rotate, so that it wipes off the impurities on the bottom filter screen 29 and pushes them into the collection box 2.

[0064] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wastewater treatment device for papermaking, comprising a filtration mechanism, a calcium removal mechanism, and a replacement mechanism, characterized in that, The calcium removal mechanism includes a top cover (1), a placement tank (10), a calcium removal motor (7), a calcium removal screw (30), a crushing plate (31), a spring rod (32), a baffle plate (33), a scaling pipe (11), a flow baffle plate (12), and a calcium removal box (21). The top cover (1) is fixedly connected to the placement pool (10), the output shaft of the calcium removal motor (7) is fixedly connected to the calcium removal screw (30), the calcium removal screw (30) is threadedly connected to the crushing plate (31), the crushing plate (31) is slidably connected to the inside of the calcium removal box (21), and the flow baffle (12) is fixedly connected to one end of the scaling pipe (11). One end of the scaling tube (11) is fixedly connected to the crushing plate (31), and the other end of the scaling tube (11) is fixedly connected to the calcium removal box (21). The calcium removal screw (30) is rotatably and sealedly connected to the calcium removal box (21). The second spring rod (32) is fixedly connected to the side wall of the calcium removal box (21). The rear side wall of the calcium removal box (21) is slidably connected to the barrier plate (33).

2. The wastewater treatment device for papermaking according to claim 1, characterized in that, The filtration mechanism includes a tension spring rod (20), a tension spring (19), a guide rod (18), a pressure rod (22), a sleeve (23), and a bottom filter screen (29). The lower end of the tension spring rod (20) is fixedly connected to the inner bottom of the placement pool (10), the lower end of the sleeve (23) is fixedly connected to the inner bottom of the placement pool (10), the bottom filter screens (29) are fixedly connected, the bottom filter screens (29) are slidably connected to the guide rod (18), and one end of the tension spring (19) is fixedly connected to the bottom filter screens (29).

3. The wastewater treatment device for papermaking according to claim 1, characterized in that, The pressure rod (22) is slidably connected to the sleeve (23), the bottom end of the pressure rod (22) is in contact with the upper surface of the bottom filter screen (29), and the other end of the tension spring (19) is fixedly connected to the top cover (1).

4. The wastewater treatment device for papermaking according to claim 1, characterized in that, The replacement mechanism includes a replacement box (24), a linkage plate (34), a lifting screw (13), a lifting guide rod (14), a water inlet pipe (3), a transmission box (6), a cylinder (27), a lifting motor (28), a transmission gear set (25), and a linkage bearing (26). The replacement box (24) is fixedly connected to the side wall of the placement pool (10). The filter block (36) is fixedly connected inside the linkage plate (34). The linkage plate (34) is slidably connected to the lifting guide rod (14). The linkage plate (34) is threadedly connected to the lifting screw (13).

5. The wastewater treatment device for papermaking according to claim 4, characterized in that, The water inlet pipe (3) is fixedly connected to the side wall of the placement pool (10), and the position of the water inlet pipe (3) corresponds to the position of the filter block (36).

6. The wastewater treatment device for papermaking according to claim 1, characterized in that, The lower end of the lifting screw (13) is slidably connected to a bevel gear in the transmission gear set (25), and the cylinder (27) is fixedly connected to the bottom of the placement pool (10).

7. The wastewater treatment device for papermaking according to claim 1, characterized in that, The output shaft of the cylinder (27) is fixedly connected to the linkage bearing (26). The transmission gear set (25) consists of a pair of meshing bevel gears. One bevel gear of the transmission gear set (25) is slidably connected to the bottom end of the lifting screw (13) via a spline. The other bevel gear of the transmission gear set (25) is fixedly connected to the output shaft of the lifting motor (28).

8. The wastewater treatment device for papermaking according to claim 1, characterized in that, A dust cover (4) is fixedly connected to the outer wall of the placement pool (10), and a belt drive assembly (16) is provided inside the dust cover (4).

9. A wastewater treatment device for papermaking according to claim 8, characterized in that, The belt drive assembly (16) consists of a pair of pulleys and a drive belt, with a tensioning pulley (15) fixedly connected to one of the pulleys, and a cleaning belt (36) provided on the tensioning pulley (15).

10. A wastewater treatment device for papermaking according to claim 1, characterized in that, The tensioning wheel (15) is rotatably connected to the inside of the top cover (1). A collection box (2) is placed inside the top cover (1). A water pump motor (8) and a water pump (9) are fixedly connected to the side wall of the placement pool (10). A pin (36) is fixedly connected to the lower end of the pressure rod (22).

Images