Wastewater treatment equipment for corrugated paper production

Abstract

The invention relates to the field of corrugated paper production, in particular to waste water treatment equipment for corrugated paper production, which comprises an aeration tank, an aeration head and an isolation cylinder, a plurality of aeration heads for conveying air into the wastewater are mounted in the aeration tank; a plurality of isolation cylinders are mounted in the aeration tank, and each aeration head is positioned in one isolation cylinder; a filter screen part for blocking impurities in the wastewater is arranged on the isolation cylinder; the device further comprises a shaft rod, a first rotary driving piece and blades. A plurality of shaft rods and a rotary driving piece I for driving the shaft rods to rotate are mounted on the aeration tank; each shaft rod is located in the corresponding isolation cylinder. Each shaft rod is provided with a plurality of blades, and the blades do circular motion in the isolation cylinder. According to the invention, bubbles can be scattered and thrown out, the coverage range of the bubbles is increased, the bubbles are driven to penetrate through the filter screen part in an accelerated manner, and the penetrating and cutting efficiency of the bubbles is improved.

Description

Technical Field

[0001] This invention relates to the field of corrugated paper production, and more particularly to a wastewater treatment device for corrugated paper production. Background Technology

[0002] The production of corrugated paper generates a large amount of wastewater containing a large amount of suspended solids and chemicals. These pollutants need to be removed or reduced through physical, chemical or biological treatment processes to purify the wastewater.

[0003] For example, Chinese patent CN118993453A discloses a wastewater treatment device and method for papermaking wastewater. By adding a bubble-dispersing and dust-blocking mechanism to the aeration head, it can not only intercept suspended impurities in the wastewater and prevent the aeration head's pores from being blocked, but also further cut and break the bubbles through the spikes of the dispersion holes, causing them to split into smaller microbubbles, thereby improving the bubble dispersion effect and oxygen transfer efficiency. However, it still has the following drawbacks: 1. The bubble output path of the aeration head is a straight upward line, which makes it impossible for the bubbles to disperse to the surrounding area, resulting in low aeration efficiency; 2. Although covering the aeration head with the bubble-dispersing and dust-blocking mechanism blocks suspended impurities in the wastewater, it also prevents the bubbles from rising quickly, which also reduces the aeration efficiency. Summary of the Invention

[0004] In order to overcome the drawback that the protective structure added to the aeration head in existing wastewater treatment equipment affects the aeration efficiency, this invention provides a wastewater treatment device for corrugated paper production.

[0005] The technical solution is as follows: A wastewater treatment device for corrugated paper production includes an aeration tank, aeration heads, and isolation cylinders; the aeration tank is equipped with multiple aeration heads for supplying air into the wastewater; the aeration tank is equipped with multiple isolation cylinders, with each aeration head located in one isolation cylinder; the isolation cylinders are provided with filter screens for blocking impurities in the wastewater; the device also includes shafts, a rotary drive component, and blades; the aeration tank is equipped with multiple shafts and a rotary drive component for driving the shafts to rotate; each shaft is located in one isolation cylinder; multiple blades are installed on each shaft, and the blades move in a circular motion within the isolation cylinder; the circular motion of the blades agitates the wastewater, causing the air bubbles released by the aeration heads to be thrown laterally out of the isolation cylinders.

[0006] Preferably, the height of the isolation cylinder is higher than the height of the wastewater in the aeration tank.

[0007] Preferably, a scraping bar is installed on the shaft, and the scraping bar contacts the outer surface of the corresponding isolation cylinder to scrape and clean the filter screen.

[0008] Preferably, all the blades on the shaft are arranged in a ring array above the corresponding aeration head, and the central axis of the shaft is the same as the central axis of the corresponding aeration head.

[0009] Preferably, the air outlets on the aeration head are arranged in a ring array.

[0010] Preferably, the aeration tank has a cylindrical structure, and an agitator is provided in the middle of the aeration tank, forming an annular flow channel between the aeration tank and the agitator; all the aeration heads are distributed equidistantly in the annular flow channel; the agitator is used to agitate the wastewater in the aeration tank, causing the wastewater to flow in an annular manner.

[0011] Preferably, the agitation assembly includes a second rotary drive component and an agitation shaft; the second rotary drive component is installed on the aeration tank; an agitation shaft for agitating wastewater is installed in the middle of the aeration tank; the agitation shaft is connected to the drive end of the second rotary drive component.

[0012] Preferably, the filter section is vertically shaped and extends vertically through the side wall of the isolation cylinder.

[0013] Preferably, the number of blades on the shaft is the same as the number of filter screens on the isolation cylinder, and the bottom of the blade is provided with a clearance groove for avoiding the aeration head. The contact position between the blade and the isolation cylinder is a contact surface, which can cover the filter screen.

[0014] Preferably, a waterproof sealing strip is provided on the inner wall of the isolation cylinder at a position on both sides of the filter section.

[0015] Beneficial effects: This invention not only enables bubbles to be scattered and thrown out, increasing the coverage area of ​​the bubbles, but also allows the bubbles to be driven to pass through the filter screen more quickly, improving the efficiency of bubble passage and separation.

[0016] This invention isolates suspended impurities in wastewater outside the isolation cylinder, thus creating a rapid upward path for bubbles inside the isolation cylinder and preventing suspended impurities from obstructing the bubbles.

[0017] This invention ensures that the bubbles are separated by blades before being thrown out of the isolation cylinder, thereby guaranteeing the dispersion of the bubbles during the throwing process. Attached Figure Description

[0018] Figure 1 The diagram shown is a three-dimensional structural schematic of the wastewater treatment equipment for corrugated paper production according to the present invention.

[0019] Figure 2 The diagram shown is a three-dimensional structural diagram of the internal structure of the aeration tank of this invention;

[0020] Figure 3 The diagram shown is a three-dimensional structural schematic of the isolation cylinder of the present invention;

[0021] Figure 4 The diagram shown is a three-dimensional structural illustration of the internal structure of the isolation cylinder of the present invention.

[0022] The labels in the diagram are as follows: 1-Aeration tank, 2-Aeration head, 3-Isolation cylinder, 31-Filter screen section, 4-Shaft, 5-Rotary drive component one, 6-Blade, 61-Allowing groove, 62-Contact surface, 7-Scraper bar, 8-Rotary drive component two, 9-Agitator shaft. Detailed Implementation

[0023] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0024] Example 1: A wastewater treatment device for corrugated paper production, such as... Figures 1-4 As shown, the aeration tank includes an aeration tank 1, aeration heads 2, and isolation cylinders 3. Multiple aeration heads 2 are installed on the bottom wall of the aeration tank 1. Multiple isolation cylinders 3 are installed on the bottom wall of the aeration tank 1, with each isolation cylinder 3 corresponding to one aeration head 2, and each aeration head 2 located within one isolation cylinder 3. A filter screen 31 is provided on the wall surface of each isolation cylinder 3. The aeration tank also includes shafts 4, a rotary drive component 5, and blades 6. Multiple shafts 4 and rotary drive components 5 are installed on the aeration tank 1; the rotary drive component 5 is a waterproof motor. Each shaft 4 is located within one isolation cylinder 3. Three blades 6 in a circular array are installed on each shaft 4.

[0025] The height of the isolation cylinder 3 is higher than the height of the wastewater in the aeration tank 1.

[0026] Two symmetrical scraping strips 7 are installed on the shaft 4, and the scraping strips 7 can cover and scrape the entire filter screen section 31.

[0027] Example 2: Based on Example 1, as follows Figures 1-4 As shown, all the blades 6 on the shaft 4 are arranged in a ring array above the corresponding aeration head 2, and the central axis of the shaft 4 is the same as the central axis of the corresponding aeration head 2.

[0028] The air outlet holes on the aeration head 2 are arranged in a ring array.

[0029] The aeration tank 1 has a cylindrical structure, and an agitation component is provided in the middle of the aeration tank 1. An annular flow channel is formed between the aeration tank 1 and the agitation component; all the aeration heads 2 are distributed equidistantly in the annular flow channel.

[0030] The agitation assembly includes a rotary drive component 2 8 and an agitation shaft 9; the rotary drive component 2 8 is installed on the top of the aeration tank 1, and the rotary drive component 2 8 is a waterproof motor; the agitation shaft 9 is installed in the middle of the aeration tank 1; the agitation shaft 9 is connected to the drive end of the rotary drive component 2 8.

[0031] The filter section 31 is vertically shaped and extends vertically through the side wall of the isolation cylinder 3.

[0032] The number of blades 6 on the shaft 4 is the same as the number of filter sections 31 on the isolation cylinder 3. A clearance groove 61 is provided at the bottom of the blade 6. The contact position between the blade 6 and the isolation cylinder 3 is the contact surface 62. The height of the contact surface 62 is the same as that of the filter section 31, and the width of the contact surface 62 is greater than that of the filter section 31.

[0033] Waterproof sealing strips are provided on the inner wall of the isolation cylinder 3 and on both sides of the filter section 31.

[0034] The figure exemplarily illustrates a combination of two sets of aeration heads 2, isolation cylinders 3, shafts 4, rotary drive components 5, blades 6, and scraper bars 7.

[0035] A horizontal plate is installed on the aeration tank 1, and the shaft 4, the first rotary drive component 5, and the second rotary drive component 8 are all installed on the horizontal plate.

[0036] In this invention, the bottom pipe of the aeration head 2 extends out of the aeration tank 1 and is connected to an external air delivery device. Wastewater requiring aeration is added to the aeration tank 1, and then air is delivered to the aeration head 2 through the external air delivery device. The aeration head 2 releases the air into the wastewater in the aeration tank 1 to perform aeration treatment on the wastewater.

[0037] In this design, an isolation cylinder 3 surrounding the aeration head 2 protects the aeration head 2. The filter screen 31 on the isolation cylinder 3 intercepts suspended impurities in the wastewater outside the cylinder 3, allowing only wastewater to enter. Furthermore, the wastewater can only enter the isolation cylinder 3 through the filter screen 31. Considering that the bubbles released by the aeration head 2 rise gradually from the bottom of the wastewater, and that the wastewater contains a large amount of suspended impurities that hinder the rise of the bubbles, causing the bubbles to concentrate mainly in the lower half of the wastewater, while the upper half has lower contact efficiency with the bubbles, the isolation cylinder 3 is designed to protect the aeration head 2. The height of the aeration head is designed to be higher than that of the wastewater. Since suspended impurities in the wastewater are isolated outside the isolation cylinder 3, a rapid upward path for air bubbles can be formed inside the isolation cylinder 3, avoiding obstruction of the air bubbles by suspended impurities. Simultaneously, a shaft 4 and blades 6 are installed inside the isolation cylinder 3. The shaft 4 is driven to rotate by a rotary drive component 5, causing the blades 6 to move in a circular motion, agitating the wastewater inside the isolation cylinder 3. This agitation causes the air bubbles released from the aeration head 2 to be thrown outwards, allowing the bubbles to be thrown laterally. When the bubbles pass through the filter screen 31, they are further divided by the filter screen 31, making the bubbles smaller. Figure 3 As shown, the filter section 31 is open from top to bottom, so the air bubbles on this vertical path inside the isolation cylinder 3 can be quickly thrown out. This not only allows the air bubbles to be scattered and thrown out, increasing the coverage area of ​​the air bubbles, but also allows the air bubbles to be driven to pass through the filter section 31 more quickly, improving the efficiency of air bubble passage and separation.

[0038] In this design, the rotation of the rotating drive component 5 to rotate the shaft 4 can be set to intermittent rotation. This allows the bubbles released from the aeration head 2 to first fill the vertical path inside the isolation cylinder 3, and then the shaft 4 to drive the blades 6 to move and stir the wastewater, further improving the dispersion effect of the bubbles.

[0039] Furthermore, such as Figure 4 As shown, all the blades 6 on the shaft 4 are arranged in a ring array above the aeration head 2, and the air outlets on the aeration head 2 are also arranged in a ring array. In this way, the area above the aeration head 2 can be divided into multiple spaces by the ring array of blades 6, allowing the bubbles released by the aeration head 2 to disperse into each of the divided spaces. Since the end of the blade 6 away from the shaft 4 is in contact with the inner wall of the isolation cylinder 3, the bubbles are separated by the blades 6 until they are thrown out of the isolation cylinder 3, thus ensuring the dispersion of the bubbles during the throwing process. The filter part 31 on the isolation cylinder 3 is also arranged in a ring array like the blades 6, so the bubbles separated in each space can also pass through the filter part 31 at different positions, allowing the bubbles to be dispersed and thrown out from all directions, increasing the coverage area of ​​the bubbles.

[0040] Furthermore, the rotating scraper 7 driven by the shaft 4 can scrape and clean the outside of the filter screen 31, reducing the adhesion of suspended impurities in the wastewater at this location.

[0041] Furthermore, the present invention designs the aeration tank 1 as a cylinder, and adds a rotating drive component 2 8 and an agitator 9 in the middle, so that an annular flow channel is formed between the inner wall of the aeration tank 1 and the agitator 9. The aeration head 2, the isolation cylinder 3, the shaft 4, the rotating drive component 1 5, the blades 6 and the scraper 7 form an aeration combination, and multiple aeration combinations can be set. Two sets are shown in the figure as an example. Multiple aeration combinations are distributed in an annular array in the above-mentioned annular flow channel. The rotating drive component 2 8 drives the agitator 9 to rotate, so that the wastewater in the aeration tank 1 flows along the annular flow channel. The agitator 9 can be set to rotate intermittently, so that the wastewater can alternately approach the area near the aeration head 2, thereby further improving the aeration efficiency of the wastewater.

[0042] In this case, considering the different aeration requirements of wastewater, such as some wastewater requiring a large amount of air and others requiring a small amount, when treating wastewater requiring a small amount of air, it is not necessary to use all aeration heads 2; only some aeration heads 2 need to be operational. In this case, the blades 6 on the control shaft 4 are rotated to align with and cover the filter screen 31, as shown in the figure. This allows the contact surface 62 of the blades 6 to cover the filter screen 31. In conjunction with the waterproof sealing strips installed on the inner wall of the isolation cylinder 3 on both sides of the filter screen 31, the contact surface 62 of the blades 6 can completely seal the filter screen 31. This allows the isolation cylinder 3 to completely isolate the wastewater, preventing it from entering the isolation cylinder 3 and contacting the aeration heads 2. This prevents the aeration heads 2 that are not in operation from contacting the wastewater, further reducing the corrosion and pollution of the aeration heads 2 by the wastewater.

[0043] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. All equivalent substitutions made within the principles of the present invention should be included within the scope of protection of the present invention. Contents not described in detail in this invention are existing technologies known to those skilled in the art.

Claims

1. A wastewater treatment device for corrugated paper production, comprising an aeration tank (1), aeration heads (2), and isolation cylinders (3); wherein the aeration tank (1) is equipped with a plurality of aeration heads (2) for supplying air into the wastewater; wherein the aeration tank (1) is equipped with a plurality of isolation cylinders (3), each aeration head (2) being located within one of the isolation cylinders (3); wherein the isolation cylinders (3) are provided with a filter screen (31) for blocking impurities in the wastewater; characterized in that, It also includes shafts (4), a rotary drive component (5), and blades (6); multiple shafts (4) and a rotary drive component (5) for driving the shafts (4) to rotate are installed on the aeration tank (1); each shaft (4) is located in an isolation cylinder (3); multiple blades (6) are installed on each shaft (4), and the blades (6) make circular motions in the isolation cylinder (3); the wastewater is stirred by the circular motion of the blades (6), so that the bubbles released by the aeration head (2) are thrown out of the isolation cylinder (3) laterally.

2. The wastewater treatment equipment for corrugated paper production according to claim 1, characterized in that, The height of the isolation cylinder (3) is higher than the height of the wastewater in the aeration tank (1).

3. The wastewater treatment equipment for corrugated paper production according to claim 1, characterized in that, A scraper (7) is installed on the shaft (4). The scraper (7) contacts the outer surface of the corresponding isolation cylinder (3) and scrapes and cleans the filter part (31) by the scraper (7).

4. The wastewater treatment equipment for corrugated paper production according to claim 1, characterized in that, All the blades (6) on the shaft (4) are arranged in a ring array above the corresponding aeration head (2), and the central axis of the shaft (4) is the same as the central axis of the corresponding aeration head (2).

5. The wastewater treatment equipment for corrugated paper production according to claim 4, characterized in that, The air outlet holes on the aeration head (2) are arranged in a ring array.

6. The wastewater treatment equipment for corrugated paper production according to claim 1, characterized in that, The aeration tank (1) is a cylindrical structure. An agitation component is provided in the middle of the aeration tank (1), and an annular flow channel is formed between the aeration tank (1) and the agitation component. All the aeration heads (2) are distributed equidistantly in the annular flow channel. The agitation component is used to agitate the wastewater in the aeration tank (1) so that the wastewater flows in an annular manner.

7. The wastewater treatment equipment for corrugated paper production according to claim 6, characterized in that, The agitation assembly includes a second rotary drive component (8) and an agitation shaft (9); the second rotary drive component (8) is installed on the aeration tank (1); the agitation shaft (9) for agitating wastewater is installed in the middle of the aeration tank (1); the agitation shaft (9) is connected to the drive end of the second rotary drive component (8).

8. The wastewater treatment equipment for corrugated paper production according to claim 1, characterized in that, The filter section (31) is vertically shaped and extends vertically through the side wall of the isolation cylinder (3).

9. A wastewater treatment device for corrugated paper production according to claim 8, characterized in that, The number of blades (6) on the shaft (4) is the same as the number of filter screens (31) on the isolation cylinder (3). The bottom of the blades (6) is provided with a clearance groove (61) for avoiding the aeration head (2). The contact position between the blades (6) and the isolation cylinder (3) is a contact surface (62), which can cover the filter screen (31).

10. A wastewater treatment device for corrugated paper production according to claim 9, characterized in that, Waterproof sealing strips are provided on the inner wall of the isolation cylinder (3) and on both sides of the filter part (31).

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