Papermaking wastewater precipitation and recovery device for papermaking

Abstract

The utility model relates to the technical field of papermaking equipment, in particular to a papermaking wastewater precipitation and recovery device for papermaking, which comprises a precipitation tank, a water inlet pipe is communicated with the upper side of one end of the precipitation tank, and a water outlet is communicated with the lower side of the other end of the precipitation tank. A plurality of uniformly distributed lower baffles are arranged at the bottom of the settling tank, a first settling chamber is formed between one side, close to the water inlet pipe, of each lower baffle and the side wall of the settling tank, a plurality of settling chambers are formed between the other side of each lower baffle and the other lower baffle, and a drainage chamber is formed between the lower baffle close to the drainage port and the side wall of the settling tank; a plurality of upper baffles are arranged at the lower end of the box cover, the multiple sets of upper baffles correspond to the settling chambers and are inserted into the settling chambers, and the device has the beneficial effects that continuous settling work can be carried out, the efficiency is higher, the settling and impurity filtering effects are better, and the more efficient treatment effect can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment, specifically a papermaking wastewater sedimentation and recovery device. Background Technology

[0002] The paper production process generates a large amount of wastewater. The wastewater discharged from paper mills pollutes the environment in several ways, including polluting water sources. In addition to harmful inorganic chemicals, dyeing and printing wastewater also contains volatile phenols, precipitated solids, suspended solids, lignin, and other organic matter. After the wastewater is left to stand, a large amount of sediment will form, which is also part of the paper wastewater treatment process. In the existing technology for treating paper wastewater, the general sedimentation and filtration method requires settling. Conventional sedimentation methods are slow, inefficient, and affect work efficiency. They also make it difficult to remove the internal sedimented substances and clean the inside of the sedimentation device, affecting the subsequent use effect. Therefore, there is a need for a device that can quickly settle wastewater and continuously perform sedimentation and filtration. To address this, this utility model proposes a paper wastewater sedimentation and recovery device to solve the above-mentioned problems. Utility Model Content

[0003] The purpose of this invention is to provide a papermaking wastewater sedimentation and recovery device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a papermaking wastewater sedimentation and recovery device, comprising...

[0005] A sedimentation tank has an inlet pipe connected to the upper side of one end and a drain outlet connected to the lower side of the other end. The upper opening of the sedimentation tank forms a fixing groove, and a tank cover is fixedly connected inside the fixing groove. Several evenly distributed lower baffles are provided at the bottom of the sedimentation tank. The side of the lower baffle near the inlet pipe forms a first sedimentation chamber with the side wall of the sedimentation tank, and the other side of the lower baffle forms a second sedimentation chamber with another lower baffle. Several sedimentation chambers are formed, among which the lower baffle near the drain outlet forms a drain chamber with the side wall of the sedimentation tank. Several upper baffles are provided at the lower end of the tank cover. Several sets of upper baffles are arranged corresponding to the sedimentation chambers and inserted into the sedimentation chambers.

[0006] Preferably, the lower baffle is provided in several groups, each group having a different height, arranged sequentially from right to left in a manner from high to low. A filter plate is fixedly connected to the upper end of the lower baffle in a right-angle shape. The mesh size of the filter plate increases sequentially from left to right, and the front and rear ends of the filter plate are fixedly connected to the front and rear side walls of the sedimentation tank.

[0007] Preferably, the upper baffle is provided with several groups corresponding to the sedimentation chamber between the lower baffle, each group having a different height, arranged sequentially from right to left in an order of increasing height, the upper baffle being inserted into the middle of the sedimentation chamber, and one side of the upper baffle being in contact with one side of the filter plate on the lower baffle.

[0008] Preferably, the upper end of the shortest set of the rightmost side of the upper baffle is fixedly connected to the tank cover with a support member, and the support member is provided in several sets evenly distributed front and back, with the rightmost upper baffle corresponding to the water inlet pipe.

[0009] Preferably, a purification port is provided at the lower end of one side of the sedimentation tank, and several purification ports are provided corresponding to the sedimentation chamber. A sealing plate is fixedly connected to the outside of the purification port, and the sealing plate is detachable.

[0010] Preferably, a hydraulic push rod is fixedly connected to the lower side of the sedimentation tank. The output end of the hydraulic push rod is inserted into the sedimentation tank, and a scraper is fixedly connected to its end. The shape of the scraper corresponds to the impurity removal port, and the lower end of the scraper is attached to the bottom of the sedimentation tank.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention employs a staggered arrangement of upper and lower baffles of different heights, arranged sequentially from highest to lowest. The upper baffles are arranged in the opposite order to the lower baffles. A filter plate is also installed at the upper end of the lower baffle. After the upper baffle is inserted, one side of it fits against the end of the filter plate. When papermaking wastewater enters, the shortest upper baffle blocks the water flow, buffering the flow rate and reducing the impact. The longest lower baffle traps the water in the first sedimentation chamber until it overflows through the filter plate into the second sedimentation chamber on the other side. At this point, the flow rate of the wastewater in the first sedimentation chamber is greatly reduced, and some larger impurities settle to the bottom and undergo preliminary filtration through the filter plate. The overflowing water is initially purified, and the impurity content in the overflowing wastewater is greatly reduced. This allows for continuous sedimentation and filtration in subsequent sedimentation chambers, resulting in higher efficiency, better sedimentation and impurity filtration, and a more efficient treatment effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 This is an exploded view of the structure of this utility model;

[0016] Figure 4 for Figure 3The right-side structural view.

[0017] In the diagram: 1. Sedimentation tank, 2. Water inlet pipe, 3. Drain outlet, 4. Fixing trough, 5. Tank cover, 6. Hydraulic push rod, 7. Lower baffle, 8. Filter plate, 9. Upper baffle, 10. Support component, 11. Impurity removal port, 12. Sealing plate, 13. Scraper. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example 1: Please refer to Figures 1-4 This utility model provides a technical solution: a papermaking wastewater sedimentation and recovery device, comprising...

[0020] A sedimentation tank 1 has an inlet pipe 2 connected to the upper side of one end and a drain outlet 3 connected to the lower side of the other end. The upper opening of the sedimentation tank 1 forms a fixing groove, and a tank cover 5 is fixedly connected inside the fixing groove. Several evenly distributed lower baffles 7 are provided at the bottom of the sedimentation tank 1. The side of the lower baffle 7 near the inlet pipe 2 forms a first sedimentation chamber with the side wall of the sedimentation tank 1, and the other side of the lower baffle 7 forms a second sedimentation chamber with another lower baffle 7. Several sedimentation chambers are formed, among which the lower baffle 7 near the drain outlet forms a drain chamber with the side wall of the sedimentation tank 1. Several upper baffles 9 are provided at the lower end of the tank cover 5. Several sets of upper baffles 9 are provided corresponding to the sedimentation chambers and are inserted into the sedimentation chambers.

[0021] Example 2: The lower baffle 7 is provided with several groups, each group having a different height, arranged sequentially from right to left in a way from high to low. Filter plates 8 are fixedly connected to the upper end of the lower baffle 7 at a right angle. The mesh size of the filter plates 8 increases sequentially from left to right, and the front and rear ends of the filter plates 8 are fixedly connected to the front and rear side walls of the sedimentation tank 1.

[0022] The upper baffle 9 is provided with several sets of sedimentation chambers corresponding to the lower baffle 7. Each set has a different height and is arranged from right to left in order of increasing height. The upper baffle 9 is inserted into the middle of the sedimentation chamber and one side is attached to one side of the upper filter plate 8 of the lower baffle 7.

[0023] A support member 10 is fixedly connected between the upper end of the shortest set of the rightmost side of the upper baffle 9 and the box cover 5. The support member 10 has several sets evenly distributed front and back. The rightmost upper baffle 9 corresponds to the water inlet pipe 2. By setting up lower baffles 7 and upper baffles 9 that are staggered vertically, with different heights, and arranged in order from high to low, the upper baffles 9 are arranged in the opposite order to the lower baffles 7. A filter plate 8 is also set on the upper end of the lower baffle 7. After the upper baffle 9 is inserted, one side is attached to the end of the filter plate 8. After the papermaking wastewater enters, the shortest upper baffle 9 can block and buffer the water flow. The water flow rate is reduced, and the impact force is decreased. The longest lower baffle 7 can intercept and temporarily store the water in the first sedimentation chamber until the wastewater overflows through the filter plate 8 into the second sedimentation chamber on the other side. At this time, the flow rate of the wastewater in the first sedimentation chamber is greatly reduced, and some larger impurity particles will settle to the bottom and undergo preliminary filtration through the filter plate 8. The water overflowing from the top is initially purified, and the impurity content in the overflowing wastewater is greatly reduced. Then, the subsequent sedimentation chambers are used for sedimentation and filtration in sequence, which can carry out continuous sedimentation work, with higher efficiency and better sedimentation and impurity filtration effect, achieving a more efficient treatment effect.

[0024] A cleaning port 11 is provided at the lower end of one side of the sedimentation tank 1. Several cleaning ports 11 are provided corresponding to the sedimentation chamber. A sealing plate 12 is fixedly connected to the outside of the cleaning port 11. The sealing plate 12 is detachable. By opening the sealing plate 12, the impurities settled at the bottom of the sedimentation chamber and the mixed water can be discharged from the cleaning port 11, which facilitates the cleaning of the bottom of the sedimentation tank 1.

[0025] A hydraulic push rod 6 is fixedly connected to the lower side of the sedimentation tank 1. The output end of the hydraulic push rod 6 is inserted into the sedimentation tank 1, and a scraper 13 is fixedly connected to the end. The shape of the scraper 13 corresponds to the impurity removal port 11. The lower end of the scraper 13 is attached to the bottom of the sedimentation tank 1. The scraper 13 is pushed by the hydraulic push rod 6 to scrape away the impurities at the bottom of the sedimentation tank 1. The mechanical structure can be used to scrape and clean the impurities, saving manpower and improving the efficiency of use.

[0026] In actual use, by setting up staggered lower baffles 7 and upper baffles 9, with different heights, arranged sequentially from high to low, and the upper baffles 9 arranged in the opposite order to the lower baffles 7, a filter plate 8 is also installed at the upper end of the lower baffles 7. After the upper baffle 9 is inserted, one side is attached to the end of the filter plate 8. After the papermaking wastewater enters, the shortest upper baffle 9 blocks the water flow, buffering the water flow rate and reducing the impact force. The longest lower baffle 7 can intercept and temporarily store the water in the first sedimentation chamber until the wastewater overflows through the filter plate 8 into the second sedimentation chamber on the other side. At this time, the flow rate of the wastewater in the first sedimentation chamber is greatly reduced, and some larger... Impurity particles will settle to the bottom and undergo preliminary filtration through filter plate 8, and the overflowing water at the top will be initially purified, with the impurity content in the overflowing wastewater greatly reduced. Then, it will undergo subsequent sedimentation filtration in the subsequent sedimentation chamber, allowing for continuous sedimentation work with higher efficiency and better sedimentation and impurity filtration effects, achieving a more efficient treatment effect. By opening the sealing plate 12, the impurities and mixed water settled at the bottom of the sedimentation chamber can be discharged from the impurity removal port 11, facilitating the cleaning of the bottom of the sedimentation tank 1. The impurities at the bottom of the sedimentation tank 1 are scraped off by the hydraulic push rod 6 pushing the scraper 13. The mechanical structure can be used to scrape and clean the impurities, saving manpower and improving the usage effect.

[0027] 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 papermaking wastewater sedimentation and recovery device, characterized in that: include A sedimentation tank (1) has an inlet pipe (2) connected to the upper side of one end and a drain outlet (3) connected to the lower side of the other end. The upper opening of the sedimentation tank (1) forms a fixed groove, and a box cover (5) is fixedly connected in the fixed groove. Several evenly distributed lower baffles (7) are provided at the bottom of the sedimentation tank (1). The side of the lower baffle (7) near the inlet pipe (2) forms a first sedimentation chamber with the side wall of the sedimentation tank (1), and the other side of the lower baffle (7) forms a second sedimentation chamber with another lower baffle (7). Several sedimentation chambers are formed, among which the lower baffle (7) near the drain outlet forms a drain chamber with the side wall of the sedimentation tank (1). Several upper baffles (9) are provided at the lower end of the box cover (5). Several sets of upper baffles (9) are provided corresponding to the sedimentation chambers and are inserted into the sedimentation chambers.

2. The papermaking wastewater sedimentation and recovery device according to claim 1, characterized in that: The lower baffle (7) is provided with several groups, each group having a different height, arranged sequentially from right to left in a high-to-low manner. A filter plate (8) is fixedly connected to the upper end of the lower baffle (7) at a right angle. The mesh size of the filter plate (8) increases sequentially from left to right, and the front and rear ends of the filter plate (8) are fixedly connected to the front and rear side walls of the sedimentation tank (1).

3. The papermaking wastewater sedimentation and recovery device according to claim 1, characterized in that: The upper baffle (9) is provided with several sets of sedimentation chambers corresponding to the lower baffle (7). Each set has a different height and is arranged from right to left in a way from low to high. The upper baffle (9) is inserted into the middle of the sedimentation chamber and one side is attached to one side of the upper filter plate (8) of the lower baffle (7).

4. The papermaking wastewater sedimentation and recovery device according to claim 3, characterized in that: The upper end of the shortest set of the rightmost side of the upper baffle (9) is fixedly connected to the box cover (5) with a support member (10). The support member (10) is provided with several sets evenly distributed in front and back. The rightmost upper baffle (9) corresponds to the water inlet pipe (2).

5. The papermaking wastewater sedimentation and recovery device according to claim 1, characterized in that: The sedimentation tank (1) has a cleaning port (11) at the lower end of one side. Several cleaning ports (11) are provided corresponding to the sedimentation chamber. A sealing plate (12) is fixedly connected to the outside of the cleaning port (11). The sealing plate (12) is detachable.

6. A papermaking wastewater sedimentation and recovery device according to claim 5, characterized in that: A hydraulic push rod (6) is fixedly connected to the lower side of the sedimentation tank (1). The output end of the hydraulic push rod (6) is inserted into the sedimentation tank (1), and a scraper (13) is fixedly connected to the end. The shape of the scraper (13) corresponds to the impurity removal port (11), and the lower end of the scraper (13) is attached to the bottom of the sedimentation tank (1).

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