Papermaking wastewater purifying and recycling device for coated white board production
By designing a combination of a purification cylinder, a rotating shaft, spiral blades and a filter screen in the production of coated white paper, the problem of flocculants clogging the filter screen was solved, and efficient purification and stable reuse of papermaking wastewater were achieved.
Patent Information
- Application Number
- CN202422503418.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-16
AI Technical Summary
During the production process of coated white paper, flocculants can easily cause filter blockage, resulting in low papermaking wastewater purification efficiency.
A papermaking wastewater purification and reuse device for coated white board paper production is designed. It adopts a purification cylinder, a rotating shaft, spiral blades, a filter screen, a reagent addition pipe and a wastewater addition pipe. The flocculation agent and wastewater are mixed through the spiral flow channel. The flocculants are filtered out on the filter screen, and the water in the flocculants is removed by pushing with the spiral blades and squeezing with the shrinking pipe.
It effectively avoids flocs from clogging the filter screen, ensuring efficient and stable wastewater purification. The sump collects the wastewater after the flocs are filtered out for easy reuse.
Smart Images
Figure CN223304236U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wastewater purification, in particular to a papermaking wastewater purification and recycling device for producing coated white board paper. Background Art
[0002] Coated white board paper belongs to the category of packaging board. It is a processed board made by coating white paint on the original board and then finishing it. During the production process of coated white board paper, a large amount of papermaking wastewater will be generated, which needs to be purified before it can be reused to reduce water resource consumption.
[0003] At present, when the papermaking wastewater generated during the production of coated white paper is purified by adding flocculants, the flocculants produced need to be filtered out through a filter, but the flocculants can easily cause the filter to be clogged. Therefore, we propose a papermaking wastewater purification and reuse device for the production of coated white paper. Utility Model Content
[0004] The purpose of the utility model is to provide a papermaking wastewater purification and reuse device for coated white board paper production, which has the advantages of avoiding clogging of the filter screen caused by flocculants during the purification process of papermaking wastewater produced by coated white board paper production, thereby ensuring more efficient and stable purification of the wastewater, and solves the problem that when the papermaking wastewater generated by the current coated white board paper production is purified by adding flocculants, the flocculants generated need to be filtered out through the filter screen, but the flocculants easily cause clogging of the filter screen.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a papermaking wastewater purification and reuse device for coated white paper production, comprising a rotating motor and a purification cylinder, wherein one side of the upper surface of the purification cylinder is fixedly connected to a reagent addition pipe and a wastewater addition pipe, and the end of the purification cylinder facing away from the wastewater addition pipe is fixedly connected to a shrinking pipe, a rotating shaft is rotatably installed inside the purification cylinder, and one end of the rotating shaft is located inside the shrinking pipe, a spiral blade is welded on the outer surface of the rotating shaft, and a drain outlet is provided on the side of the lower surface of the purification cylinder close to the shrinking pipe, and a filter screen is fixedly installed inside the drain outlet.
[0006] Preferably, a rotating motor is fixedly mounted on one end of the purification cylinder away from the necking tube, and the end of the output shaft of the rotating motor is fixedly connected to the end of the rotating shaft.
[0007] Preferably, a slag discharge valve is fixedly connected to the end of the necked pipe.
[0008] Preferably, a water collecting trough is fixedly installed on the lower surface of the purification cylinder at a position below the drain outlet, and a drain pipe is fixedly connected to the lower surface of the water collecting trough.
[0009] Preferably, a flexible scraper strip is fixedly installed on the outer surface edge of the spiral blade near the drain outlet.
[0010] Preferably, support columns are fixedly connected to the lower surface of the purification cylinder near both ends, and the lower surfaces of the two support columns are fixedly connected to fixing seats.
[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0012] 1. The utility model achieves the purpose of preventing the filter screen from being clogged by flocculants during the purification process of papermaking wastewater produced by coated white paperboard production by arranging a purification cylinder, a rotating shaft, a spiral blade, a filter screen, a drain outlet, a shrinkage pipe, a chemical addition pipe and a wastewater addition pipe, thereby ensuring a more efficient and stable purification of the wastewater. The papermaking wastewater and the flocculant during the production of coated white paperboard are simultaneously fed into the purification cylinder through the wastewater addition pipe and the chemical addition pipe, and spirally flow in the spiral flow channel composed of the spiral blades, the rotating shaft and the purification cylinder, so that the flocculant and the wastewater are fully mixed and reacted, and the flocculants generated by the reaction are filtered out by the filter screen, and the filtered wastewater passes through the filter screen and is discharged from the drain outlet. In the process of the rotating shaft driving the spiral blades to rotate, the flocculants trapped on the filter screen are pushed away by the spiral blades and squeezed at the shrinkage pipe to remove the residual water in the flocculants, and the flocculants with the water squeezed out are discharged from the shrinkage pipe.
[0013] 2. The utility model provides a water collection tank, which can collect the wastewater after filtering out the flocculants so as to facilitate discharge and reuse.
[0014] 3. The utility model achieves the effect of better scraping off the flocculants on the filter screen by setting a flexible scraping strip. Long-term sliding contact between the spiral blade and the filter screen is prone to wear gaps, making it impossible to scrape off the flocculants on the filter screen. The flocculants on the filter screen can be scraped off by adding a flexible scraping strip to the spiral blade, and the flexible scraping strip causes less wear on the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;
[0016] Figure 2 This is a schematic diagram of the main structure of the utility model;
[0017] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;
[0018] Figure 4 It is a partial three-dimensional schematic diagram of the rotating shaft and spiral blades of the utility model.
[0019] Figure numerals: 1. Rotating motor; 2. Wastewater adding pipe; 3. Chemical adding pipe; 4. Purification cylinder; 5. Narrowing pipe; 6. Slag discharge valve; 7. Support column; 8. Fixed seat; 9. Drain pipe; 10. Water collecting tank; 11. Rotating shaft; 12. Spiral blade; 13. Flexible scraper; 14. Filter screen; 15. Drain outlet. DETAILED DESCRIPTION
[0020] The technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.
[0021] Example 1
[0022] like Figures 1-4 As shown, the utility model proposes a papermaking wastewater purification and reuse device for coated white board production, including a rotating motor 1 and a purification cylinder 4, one side of the upper surface of the purification cylinder 4 is fixedly connected to a chemical addition pipe 3 and a wastewater addition pipe 2, papermaking wastewater and flocculation chemicals during the production of coated white board are simultaneously added to the inside of the purification cylinder 4 through the wastewater addition pipe 2 and the chemical addition pipe 3, the end of the purification cylinder 4 away from the wastewater addition pipe 2 is fixedly connected to a shrinking pipe 5, the shrinking pipe 5 is conical, and the outer diameter of its largest end is equal to the outer diameter 4 of the purification cylinder, the end of the shrinking pipe 5 is fixedly connected to a slag discharge valve 6, and the flocculants generated inside the purification cylinder 4 are discharged through the slag discharge valve 6.
[0023] A rotating shaft 11 is rotatably installed inside the purification cylinder 4, and one end of the rotating shaft 11 is located inside the shrinking tube 5. A rotating motor 1 is fixedly installed on the end of the purification cylinder 4 facing away from the shrinking tube 5. The end of the output shaft of the rotating motor 1 is fixedly connected to the end of the rotating shaft 11. The rotating motor 1 drives the rotating shaft 11 to rotate. A spiral blade 12 is welded on the outer surface of the rotating shaft 11. A drain outlet 15 is provided on the side of the lower surface of the purification cylinder 4 close to the shrinking tube 5. A filter screen 14 is fixedly installed inside the drain outlet 15. The filter screen 14 filters out the flocs produced in the wastewater to achieve the function of filtering and purifying the wastewater. A water collecting tank 10 is fixedly installed on the lower surface of the purification cylinder 4 below the drain outlet 15. The lower surface of the water collecting tank 10 is fixedly connected to a drain pipe 9. The water collecting tank 10 can collect the wastewater after the flocs are filtered out so that it can be discharged and reused through the drain pipe 9.
[0024] When the utility model is in use, papermaking wastewater and flocculating agent in the production of coated white paperboard are simultaneously added into the purification cylinder 4 through the wastewater adding pipe 2 and the agent adding pipe 3, and spirally flow in the spiral flow channel composed of the spiral blade 12, the rotating shaft 11 and the purification cylinder 4, so that the flocculating agent and the wastewater are fully mixed and reacted, and the flocculants generated by the reaction are filtered out by the filter screen 14, and the filtered wastewater passes through the filter screen 14 and is discharged from the drain port 15. In the process of the rotating shaft 11 driving the spiral blade 12 to rotate, the flocculants trapped on the filter screen 14 are pushed away by the spiral blade 12 and are squeezed at the shrinking pipe 5 to remove the residual water in the flocculants, and the flocculants with the water squeezed out are discharged from the shrinking pipe 5.
[0025] Example 2
[0026] like Figure 1 、 Figure 3 and Figure 4 As shown, the utility model proposes a papermaking wastewater purification and reuse device for coated white board paper production. Compared with the first embodiment, this embodiment also includes a flexible scraper 13 fixedly installed at the edge of the outer surface of the spiral blade 12 near the drain outlet 15, and the lower surface of the purification cylinder 4 is fixedly connected to the support columns 7 near the two end positions, and the lower surfaces of the two support columns 7 are fixedly connected to the fixed seats 8, and the upper surface of each fixed seat 8 is provided with fixing holes for bolt installation near the four corners.
[0027] In this embodiment, long-term sliding contact between the spiral blade 12 and the filter screen 14 is likely to cause wear gaps, making it impossible to scrape off the flocs on the filter screen 14. However, the flocs on the filter screen 14 can be scraped off by adding a flexible scraper 13 to the spiral blade 12, and the flexible scraper 13 causes little wear on the filter screen 14.
[0028] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A papermaking wastewater purification and recycling device for coated whiteboard production, comprising a rotating motor (1) and a purification cylinder (4), characterized in that: One side of the upper surface of the purification cylinder (4) is fixedly connected to a reagent addition pipe (3) and a wastewater addition pipe (2); one end of the purification cylinder (4) facing away from the wastewater addition pipe (2) is fixedly connected to a necking pipe (5); a rotating shaft (11) is rotatably mounted inside the purification cylinder (4), and one end of the rotating shaft (11) is located inside the necking pipe (5); a spiral blade (12) is welded to the outer surface of the rotating shaft (11); a drainage port (15) is provided on the side of the lower surface of the purification cylinder (4) close to the necking pipe (5); a filter screen (14) is fixedly mounted inside the drainage port (15).
2. The papermaking wastewater purification and recycling device for coated white board production according to claim 1, characterized in that: A rotating motor (1) is fixedly mounted on one end of the purification cylinder (4) away from the shrinking tube (5), and the end of the output shaft of the rotating motor (1) is fixedly connected to the end of the rotating shaft (11).
3. The papermaking wastewater purification and recycling device for coated white board production according to claim 1, characterized in that: The end of the necked pipe (5) is fixedly connected to a slag discharge valve (6).
4. The papermaking wastewater purification and recycling device for coated white board production according to claim 1, characterized in that: A water collecting trough (10) is fixedly installed on the lower surface of the purification cylinder (4) at a position below the drain outlet (15), and a drain pipe (9) is fixedly connected to the lower surface of the water collecting trough (10).
5. The papermaking wastewater purification and recycling device for coated white board production according to claim 1, characterized in that: A flexible scraper strip (13) is fixedly mounted on the outer surface edge of the spiral blade (12) near the drain outlet (15).
6. The papermaking wastewater purification and recycling device for coated white board production according to claim 1, characterized in that: The lower surface of the purification cylinder (4) is fixedly connected to support columns (7) near both ends, and the lower surfaces of the two support columns (7) are fixedly connected to fixing seats (8).