Method and device for treating papermaking wastewater

Abstract

The invention relates to the technical field of papermaking wastewater treatment, in particular to a papermaking wastewater treatment method which comprises the following steps: S1, pouring wastewater into an impurity removal box, and respectively driving a first screen and a second screen to shake in a corresponding first groove and a corresponding second groove under the power action of a driving motor and an electric telescopic rod, impurities contained in the wastewater are filtered twice through a first screen and a second screen; s2, after the wastewater is filtered, a side cover is opened, impurities on the surface of the second screen are taken out, and meanwhile, residual impurities on the surface of the first screen are also taken out; the first screen and the second screen can be driven to shake under the power action of the driving motor and the electric telescopic rod, so that the phenomenon that meshes of the screens are blocked by impurities during filtration is avoided, the effect of filtering the impurities in the wastewater is improved, the wastewater falling into the water collecting box is purer, and subsequent wastewater treatment is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of papermaking wastewater treatment, and in particular to a method and device for treating papermaking wastewater. Background Art

[0002] The paper industry uses wood, straw, reeds, rags, etc. as raw materials or directly recycles old paper as raw materials. The cellulose is separated through high-temperature and high-pressure cooking to make pulp. In the production process, wastewater is finally discharged. The wastewater has a foul odor and is highly polluting, so it needs to be treated.

[0003] A papermaking wastewater treatment device with announcement number CN202021177288.7, in which the wastewater is first injected into a wastewater sedimentation tank, and the filter mesh frame above the wastewater sedimentation tank is installed on the filter mesh slot frame. The wastewater sedimentation tank and the wastewater treatment tank are connected by a pump, and a filter is arranged at the connection between the water inlet pipe and the wastewater sedimentation tank. The wastewater after twice filtration is injected into the wastewater treatment tank.

[0004] There are still certain shortcomings in use. Although the wastewater is filtered twice, the position of the filter is fixed, and it is easy for impurities in the wastewater to clog the filter, thereby reducing the filtering quality of the filter for impurities, making the practicability of wastewater treatment limited. In addition, when treating wastewater, filtering alone cannot completely remove the bacteria contained in the wastewater, which also leads to limited wastewater treatment effects. Therefore, we propose a method and device for treating papermaking wastewater. Summary of the invention

[0005] The object of the present invention is to provide a method and device for treating papermaking wastewater, so as to solve the problem proposed in the above-mentioned background technology that although the wastewater is filtered twice during use, the position of the filter is fixed, and it is easy for impurities in the wastewater to clog the filter, thereby reducing the filtering quality of the filter for impurities, making the practicability of wastewater treatment limited, and when treating wastewater, filtering alone cannot completely remove the bacteria contained in the wastewater, which also leads to the problem of limited wastewater treatment effect.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A method for treating papermaking wastewater comprises the following steps:

[0008] S1. Pour the wastewater into the impurity removal box, and drive the first screen and the second screen to shake in the corresponding first groove and the second groove respectively under the power of the drive motor and the electric telescopic rod, and then filter the impurities contained in the wastewater twice through the first screen and the second screen;

[0009] S2. After the wastewater is filtered, open the side cover to remove the impurities on the surface of the second screen, and remove the impurities remaining on the surface of the first screen;

[0010] S3. The filtered wastewater flows into the water collecting box, and then disinfectant is added into the water collecting box, and the cover is placed on the top of the water collecting box. Then, the water collecting box is shaken under the power of the stepper motor to mix the waste liquid and disinfectant inside the water collecting box evenly, and the waste liquid is disinfected. Then, the stepper motor switch is turned off, and the valve is opened to allow the treated waste liquid to flow out of the water collecting box through the outlet pipe.

[0011] A device for treating papermaking wastewater comprises a base plate, the top of which is fixedly connected to a debris removal box, a first groove and a second groove are respectively provided in the debris removal box, the first groove is arranged at the top of the second groove, a first screen and a second screen are respectively slidably connected in the first groove and the second groove, a connecting spring is elastically connected between the first screen and the first groove, a damping rod is arranged in the connecting spring, an elastic rope is fixedly connected between the second groove and the second screen, a vertical plate is fixedly connected to the top of the debris removal box, a cylinder is rotatably connected in the vertical plate, and a second tooth is fixedly connected to the inner wall of the cylinder.

[0012] As a preferred solution of the present invention, a driving motor is installed on the side of the vertical plate, and the output end of the driving motor is fixedly connected to a first tooth, the first tooth extends into the cylinder, and the first tooth meshes with the second tooth.

[0013] As a preferred solution of the present invention, a steel cable is provided between the cylinder and the first screen, one end of the steel cable is wound around the cylinder, and the other end of the steel cable is fixedly connected to the first screen.

[0014] As a preferred solution of the present invention, the surface of the debris removal box is abutted with a side cover, the outer surface of the side cover is fixedly connected to a plastic ring, the side cover is arranged between the first screen and the second screen, and an electric telescopic rod is installed on the outside of the debris removal box, and the electric telescopic rod is fixedly connected to the second screen.

[0015] As a preferred solution of the present invention, a fixing plate is fixedly connected to the top of the bottom plate, a top groove is provided in the fixing plate, a water collecting box is slidably connected to the top of the top groove, and the water collecting box is arranged at the bottom of the debris removal box.

[0016] As a preferred solution of the present invention, a circular groove is opened in the water collecting box, a cover plate is arranged on the top of the water collecting box, a pull ring is fixedly connected to the top of the cover plate, an insertion rod is fixedly connected to the bottom of the cover plate, and the insertion rod extends into the circular groove and is plugged into the circular groove.

[0017] As a preferred solution of the present invention, a buffer spring is elastically connected between the water collecting box and the top groove, a damping member is arranged inside the buffer spring, a water outlet pipe is fixedly connected to the side of the water collecting box, the water outlet pipe is connected to the water collecting box, and a valve is arranged on the outside of the water outlet pipe.

[0018] As a preferred solution of the present invention, a stepper motor is installed on the top of the fixed plate, the output end of the stepper motor is fixedly connected to a turntable, the surface of the turntable is fixedly connected to a limit rod, the side of the water collecting box is fixedly connected to a ring through a push rod, and the limit rod extends into the ring and is slidably connected to the ring.

[0019] As a preferred solution of the present invention, a universal wheel is provided at the bottom of the base plate, and the universal wheel is movably connected to the base plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, by arranging the coordinated use of structures such as a driving motor, a first screen, a second screen, first teeth, a second tooth, a steel cable, a connecting spring, a damping rod, and an electric telescopic rod, the first screen and the second screen can be driven to shake under the power of the driving motor and the electric telescopic rod, thereby avoiding the phenomenon of impurities clogging the mesh of the screen during filtration, improving the effect of filtering impurities in the wastewater, making the wastewater falling into the water collecting box purer, and facilitating the subsequent treatment of the wastewater.

[0022] 2. In the present invention, by setting up a stepper motor, a water collecting box, a buffer spring, a damping block, a ring, a round rod, and a push rod for coordinated use, the wastewater and the disinfectant in the water collecting box can be mixed, thereby improving the disinfection effect on the wastewater, thereby making the wastewater more comprehensive during treatment, and improving the practicality and scope of use of the wastewater treatment device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a bottom view structural schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of the internal structure of the impurity removal box of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the first groove and the second groove of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the water collecting box and the cover plate of the present invention;

[0028] Figure 6 It is a schematic structural diagram of the push rod and the sleeve ring of the present invention.

[0029] In the figure: 1, bottom plate; 2, fixing plate; 3, water collecting box; 4, cover plate; 5, pull ring; 6, water outlet pipe; 7, valve; 8, debris removal box; 9, side cover; 10, plastic ring; 11, vertical plate; 12, cylinder; 13, driving motor; 14, first screen; 15, first tooth; 16, second tooth; 17, stepping motor; 18, turntable; 19, collar; 20, limit rod; 21, push rod; 22, universal wheel; 23, electric telescopic rod; 24, steel cable; 25, second screen; 26, elastic rope; 27, connecting spring; 28, damping rod; 29, first groove; 30, second groove; 31, plug rod; 32, round groove; 33, buffer spring; 34, damping member; 35, top groove. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] For examples, see Figure 1-Figure 6 , the present invention provides a technical solution:

[0032] A method for treating papermaking wastewater comprises the following steps:

[0033] S1. Pour the waste water into the impurity removal box 8, and drive the first screen 14 and the second screen 25 to shake in the corresponding first groove 29 and the second groove 30 under the power of the drive motor 13 and the electric telescopic rod 23, and then filter the impurities contained in the waste water twice through the first screen 14 and the second screen 25;

[0034] S2. After the wastewater is filtered, open the side cover 9 to remove the impurities on the surface of the second screen 25, and also remove the impurities remaining on the surface of the first screen 14;

[0035] S3. The filtered waste water flows into the water collecting box 3, and then disinfectant is added to the water collecting box 3, and the cover plate 4 is covered on the top of the water collecting box 3. Then, the water collecting box 3 is shaken under the power of the stepper motor 17 to mix the waste liquid and disinfectant inside the water collecting box 3 evenly, and the waste liquid is disinfected. Then, the switch of the stepper motor 17 is turned off, and the valve 7 is opened to allow the treated waste liquid to flow out of the water collecting box 3 through the outlet pipe 6.

[0036] A papermaking wastewater treatment device comprises a bottom plate 1, a debris removal box 8 is fixedly connected to the top of the bottom plate 1, a first groove 29 and a second groove 30 are respectively provided in the debris removal box 8, the first groove 29 is arranged on the top of the second groove 30, a first screen 14 and a second screen 25 are respectively slidably connected in the first groove 29 and the second groove 30, a connecting spring 27 is elastically connected between the first screen 14 and the first groove 29, a damping rod 28 is arranged in the connecting spring 27, an elastic rope 26 is fixedly connected between the second groove 30 and the second screen 25, a vertical plate 11 is fixedly connected to the top of the debris removal box 8, a cylinder 12 is rotatably connected in the vertical plate 11, and a second tooth 16 is fixedly connected to the inner wall of the cylinder 12.

[0037] A driving motor 13 is installed on the side of the vertical plate 11, and the output end of the driving motor 13 is fixedly connected to the first tooth 15, which extends into the cylinder 12, and the first tooth 15 is meshed with the second tooth 16. A steel cable 24 is arranged between the cylinder 12 and the first screen 14, and one end of the steel cable 24 is wound around the cylinder 12, and the other end of the steel cable 24 is fixedly connected to the first screen 14. A side cover 9 is abutted on the surface of the debris removal box 8, and a plastic ring 10 is fixedly connected to the outer surface of the side cover 9. The side cover 9 is arranged between the first screen 14 and the second screen 25. An electric telescopic rod 23 is installed on the outside of the debris removal box 8, and the electric telescopic rod 23 is fixedly connected to the second screen 25.

[0038] Among them, the first screen 14 and the second screen 25 can be driven to shake under the power of the driving motor 13 and the electric telescopic rod 23, thereby avoiding the phenomenon of impurities clogging the mesh of the screen during filtering, improving the effect of filtering impurities in the wastewater, and making the wastewater falling into the water collecting box 3 purer, which is convenient for subsequent treatment of the wastewater.

[0039] The top of the bottom plate 1 is fixedly connected with a fixed plate 2, a top groove 35 is provided in the fixed plate 2, a water collecting box 3 is slidably connected to the top of the top groove 35, the water collecting box 3 is arranged at the bottom of the debris removal box 8, a circular groove 32 is provided in the water collecting box 3, a cover plate 4 is arranged on the top of the water collecting box 3, a pull ring 5 is fixedly connected to the top of the cover plate 4, a plug rod 31 is fixedly connected to the bottom of the cover plate 4, the plug rod 31 extends into the circular groove 32 and is plugged into the circular groove 32, a buffer spring 33 is elastically connected between the water collecting box 3 and the top groove 35, and a damping member is provided in the buffer spring 33 34. A water outlet pipe 6 is fixedly connected to the side of the water collecting box 3, and the water outlet pipe 6 is communicated with the water collecting box 3. A valve 7 is arranged on the outside of the water outlet pipe 6. A stepper motor 17 is installed on the top of the fixed plate 2. A turntable 18 is fixedly connected to the output end of the stepper motor 17. A limit rod 20 is fixedly connected to the surface of the turntable 18. A collar 19 is fixedly connected to the side of the water collecting box 3 through a push rod 21. The limit rod 20 extends into the collar 19 and is slidably connected to the collar 19. A universal wheel 22 is arranged at the bottom of the base plate 1, and the universal wheel 22 is movably connected to the base plate 1.

[0040] The wastewater and the disinfectant in the water collecting box 3 can be mixed to improve the disinfection effect on the wastewater, thereby making the wastewater more comprehensive during treatment, thereby improving the practicality and scope of use of the wastewater treatment device during use.

[0041] The working process of the present invention is as follows: when the papermaking wastewater treatment method and treatment device designed by the present invention are in operation, the wastewater is poured into the impurity removal box 8, and then the second screen 25 is driven by the electric telescopic rod 23 to move up and down in the second groove 30 in a circular manner, and the first teeth 15 are driven to rotate by the driving motor 13. Since the first teeth 15 and the second teeth 16 are cyclically intermittently meshed, the cylinder 12 can be driven to rotate in a forward and reverse circular manner, and then the steel cable 24 is cyclically wound around the surface of the cylinder 12, and then the first screen 14 can be driven to move up and down in the first groove 29 in a circular manner, and the first screen 14 and the second screen 25 are driven to rotate in a forward and reverse circular manner. The movement can fully filter the impurities in the wastewater, so that the filtered wastewater falls into the water collecting box 3, and then add disinfectant into the water collecting box 3, and close the cover 4. When the stepper motor 17 is not working, it drives the turntable 18 and the limit rod 20 to rotate, and drives the ring 19, the push rod 21 and the water collecting box 3 to move in a circle through the limit rod 20, and then under the elastic force of the buffer spring 33, the wastewater and disinfectant inside the water collecting box 3 are fully mixed to improve the treatment quality of the wastewater, and then the switch of the stepper motor 17 is turned off, and the valve 7 is opened to allow the wastewater to flow out through the outlet pipe 6, thereby completing the treatment of the wastewater.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for treating papermaking wastewater, characterized in that: The following steps are involved: S1. Pour the waste water into the impurity removal box (8), and drive the first screen (14) and the second screen (25) to shake in the corresponding first groove (29) and the second groove (30) respectively under the power of the drive motor (13) and the electric telescopic rod (23), and then filter the impurities contained in the waste water twice through the first screen (14) and the second screen (25); S2. After the wastewater is filtered, the side cover (9) is opened to remove the impurities on the surface of the second screen (25), and the impurities remaining on the surface of the first screen (14) are also removed; S3. The filtered waste water flows into the water collecting box (3), and then disinfectant is added into the water collecting box (3), and the cover plate (4) is covered on the top of the water collecting box (3). Then, the water collecting box (3) is shaken under the power of the stepper motor (17) to make the waste liquid and disinfectant inside the water collecting box (3) mix evenly, and the waste liquid is disinfected. Then, the switch of the stepper motor (17) is turned off, and the valve (7) is opened to allow the treated waste liquid to flow out of the water collecting box (3) through the outlet pipe (6).

2. A papermaking wastewater treatment device, suitable for the papermaking wastewater treatment method according to claim 1, comprising a bottom plate (1), characterized in that: The top of the base plate (1) is fixedly connected to a debris removal box (8), a first groove (29) and a second groove (30) are respectively provided in the debris removal box (8), the first groove (29) is arranged at the top of the second groove (30), a first screen (14) and a second screen (25) are respectively slidably connected in the first groove (29) and the second groove (30), a connecting spring (27) is elastically connected between the first screen (14) and the first groove (29), a damping rod (28) is arranged in the connecting spring (27), an elastic rope (26) is fixedly connected between the second groove (30) and the second screen (25), a vertical plate (11) is fixedly connected to the top of the debris removal box (8), a cylinder (12) is rotatably connected in the vertical plate (11), and a second tooth (16) is fixedly connected to the inner wall of the cylinder (12).

3. A papermaking wastewater treatment device according to claim 2, characterized in that: A driving motor (13) is installed on the side of the vertical plate (11), and the output end of the driving motor (13) is fixedly connected to a first tooth (15), the first tooth (15) extends into the cylinder (12), and the first tooth (15) is meshed with the second tooth (16).

4. A papermaking wastewater treatment device according to claim 2, characterized in that: A steel cable (24) is arranged between the cylinder (12) and the first screen (14); one end of the steel cable (24) is wound around the cylinder (12), and the other end of the steel cable (24) is fixedly connected to the first screen (14).

5. The papermaking wastewater treatment device according to claim 2, characterized in that: The surface of the debris removal box (8) is in contact with a side cover (9), the outer surface of the side cover (9) is fixedly connected with a plastic ring (10), the side cover (9) is arranged between a first screen (14) and a second screen (25), and an electric telescopic rod (23) is installed outside the debris removal box (8), and the electric telescopic rod (23) is fixedly connected to the second screen (25).

6. The papermaking wastewater treatment device according to claim 2, characterized in that: The top of the bottom plate (1) is fixedly connected to a fixing plate (2), a top groove (35) is provided in the fixing plate (2), the top of the top groove (35) is slidably connected to a water collecting box (3), and the water collecting box (3) is arranged at the bottom of the debris removal box (8).

7. A papermaking wastewater treatment device according to claim 6, characterized in that: A circular groove (32) is provided in the water collecting box (3), a cover plate (4) is provided on the top of the water collecting box (3), a pull ring (5) is fixedly connected to the top of the cover plate (4), an insertion rod (31) is fixedly connected to the bottom of the cover plate (4), and the insertion rod (31) extends into the circular groove (32) and is plugged into the circular groove (32).

8. The papermaking wastewater treatment device according to claim 6, characterized in that: A buffer spring (33) is elastically connected between the water collecting box (3) and the top groove (35), a damping member (34) is arranged inside the buffer spring (33), a water outlet pipe (6) is fixedly connected to the side of the water collecting box (3), the water outlet pipe (6) is communicated with the water collecting box (3), and a valve (7) is arranged outside the water outlet pipe (6).

9. The papermaking wastewater treatment device according to claim 6, characterized in that: A stepper motor (17) is installed on the top of the fixed plate (2); the output end of the stepper motor (17) is fixedly connected to a rotating disk (18); the surface of the rotating disk (18) is fixedly connected to a limiting rod (20); the side of the water collecting box (3) is fixedly connected to a collar (19) via a push rod (21); the limiting rod (20) extends into the collar (19) and is slidably connected to the collar (19).

10. The papermaking wastewater treatment device according to claim 2, characterized in that: A universal wheel (22) is provided at the bottom of the base plate (1), and the universal wheel (22) is movably connected to the base plate (1).

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