A sewage treatment tank

Abstract

This utility model discloses a wastewater treatment tank, belonging to the field of wastewater treatment technology. It includes a tank body and a filter plate. The tank body has an inlet and an outlet at both ends, forming an internal chamber. The filter plate divides this chamber into a storage chamber and a filtration chamber. The filtration chamber contains first, second, and third filter cylinders, through which wastewater flows sequentially. A suction pipe is installed in the storage chamber to the bottom for cleaning impurities. The filter screens in each filter cylinder are cylindrical, with gaps between them and the cylinder wall. The inlet at the lower end of the first filter cylinder leads to the center of the filter screen, facilitating uniform liquid distribution. The second and third filter cylinders are connected by a bent pipe to guide the smooth flow of liquid. A fixed cone on one side of the third filter cylinder connects to the outlet. Some filter cylinders have one end penetrating the tank body and are equipped with a cap. This design achieves gradual interception of impurities of different particle sizes in wastewater, greatly improving filtration accuracy and effectively removing various impurities.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and specifically to a wastewater treatment tank. Background Technology

[0002] Traditional wastewater treatment methods have many shortcomings in terms of treatment efficiency and quality. Some simple filtration devices can only perform single-stage filtration, which cannot effectively remove impurities of different particle sizes from wastewater, resulting in treated water that fails to meet environmental protection requirements. Moreover, in some wastewater treatment equipment, the filtered liquid lacks independent storage space, making it susceptible to secondary pollution from untreated wastewater or residual impurities inside the equipment, seriously affecting the treatment effect.

[0003] In wastewater treatment, the accumulation of impurities at the bottom of the storage chamber is a significant problem. If not cleaned promptly, it not only affects the normal operation of the equipment but may also cause impurities to re-enter the filtered liquid, reducing treatment quality. Furthermore, traditional filtration equipment is prone to clogging, affecting filtration efficiency, and filter replacement and maintenance are inconvenient, increasing operating costs. In addition, unreasonable internal liquid flow paths, such as turbulence and short-circuiting, prevent the filtration device from fully functioning, limiting the improvement of wastewater treatment efficiency and quality. Utility Model Content

[0004] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a wastewater treatment tank that improves wastewater treatment efficiency through multi-stage filtration.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a sewage treatment tank, comprising:

[0006] The tank body has an inlet and an outlet at both ends, and the interior of the tank body has a chamber.

[0007] A filter plate that divides the tank into a liquid storage chamber and a filter chamber;

[0008] The filtration chamber is equipped with a first filter cylinder, a second filter cylinder, and a third filter cylinder. When sewage passes through the chamber, it can pass through the filter screens inside the first filter cylinder, the second filter cylinder, and the third filter cylinder in sequence.

[0009] Preferably, a sludge suction pipe is installed inside the liquid storage chamber, and the sludge suction pipe extends to the bottom of the liquid storage chamber.

[0010] Preferably, the first filter cylinder, the second filter cylinder, and the third filter cylinder are all equipped with filter screens. The filter screens are cylindrical, and there is a gap between the outer surface of the filter screen and the inner wall of the first filter cylinder, the second filter cylinder, and the third filter cylinder.

[0011] Preferably, the first filter cylinder and the second filter cylinder are connected by a connecting pipe, and a partition is connected between the first filter cylinder and the second filter cylinder. The partition is connected to the inner wall of the tank and is sleeved on the outside of the connecting pipe.

[0012] Preferably, the lower end of the first filter cylinder is provided with a liquid inlet, which is connected to the center of the filter screen inside the first filter cylinder.

[0013] Preferably, both the second and third filter cartridges have openings at their ends and are connected by a bent pipe.

[0014] Preferably, a cone is fixed to one side of the third filter cartridge, and the cone is connected to the liquid outlet.

[0015] Preferably, one end of the cone is attached to the side wall of the third filter cylinder, and the other end is connected to the liquid outlet.

[0016] Preferably, one end of the first filter cylinder, the second filter cylinder, and the third filter cylinder extends through the outside of the tank and is fixed with a cap.

[0017] Preferably, a sludge pump is installed at one end of the sludge suction pipe that extends to the outside of the tank.

[0018] The beneficial effects of this utility model are as follows:

[0019] The multi-stage filter cartridge design enables the progressive interception of impurities of different particle sizes in wastewater. Wastewater passes sequentially through the first, second, and third filter cartridges, with each stage's filter screen targeting impurities within a specific particle size range. This significantly improves filtration precision, effectively removing various impurities from wastewater and enhancing the quality of the treated water.

[0020] The connecting pipe and baffle between the first and second filter cartridges ensure that the liquid passes through each filter cartridge in a predetermined order, preventing short-circuiting or backflow within the filter chamber. This improves the orderliness and stability of the filtration process, thereby enhancing the overall filtration effect. The liquid inlet at the lower end of the first filter cartridge connects to the center of the filter screen, allowing the liquid to be evenly distributed within the screen. This maximizes the utilization of the filter screen's filtration area, prevents localized clogging due to excessive liquid flow, extends the filter screen's lifespan, and improves filtration efficiency and quality. The bend in the pipe between the second and third filter cartridges guides the liquid to flow smoothly, increasing the liquid's residence time within the pipe and promoting further sedimentation of impurities. Simultaneously, the relative positions of the two filter cartridges can be flexibly adjusted, facilitating equipment installation and layout. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is an internal view of the tank.

[0023] Figure 3 This is a connection diagram of the first and second filter cartridges.

[0024] Figure 4 This is a structural diagram of the third filter cartridge.

[0025] Figure 5 This is an internal view of the first filter cartridge.

[0026] Figure 6 for Figure 2 Enlarged view of point A in the image.

[0027] In the diagram: 1. Tank body, 101. Liquid storage chamber, 102. Filter chamber, 2. Liquid inlet, 3. Liquid outlet, 4. Sludge suction pipe, 5. First filter cylinder, 6. Second filter cylinder, 7. Third filter cylinder, 8. Cover, 9. Filter plate, 10. Filter screen, 11. Partition, 12. Connecting pipe, 13. Bend pipe, 14. Conical cylinder. Detailed Implementation

[0028] The present invention is illustrated below with specific embodiments, but these are not intended to limit the scope of the invention.

[0029] Example 1

[0030] like Figures 1-6 As shown in the figure, in this embodiment, a sewage treatment tank is provided, including a tank body 1 and a filter plate 9.

[0031] The tank body 1 has an inlet 2 and an outlet 3 at its two ends, and the tank body 1 has a chamber inside.

[0032] The filter plate 9 divides the tank 1 into a liquid storage chamber 101 and a filter chamber 102.

[0033] The filtration chamber 102 contains a first filter cylinder 5, a second filter cylinder 6, and a third filter cylinder 7. When wastewater passes through the chamber, it sequentially passes through the filter screens 10 inside the first filter cylinder 5, the second filter cylinder 6, and the third filter cylinder 7. The wastewater enters the chamber from the inlet 2 at one end of the tank 1 and is guided to the filtration chamber 102 by the filter plate 9. Under pressure or natural flow, it sequentially passes through the filter screens 10 inside the first filter cylinder 5, the second filter cylinder 6, and the third filter cylinder 7, achieving staged filtration, and finally flows out through the outlet 3. The storage chamber 101, separated by the filter plate 9, is used to temporarily store the filtered liquid and allow some impurities to settle.

[0034] The multi-stage filter cartridge design enables the gradual interception of impurities of different particle sizes in wastewater, improving filtration accuracy. The separation of the liquid storage chamber 101 from the filter chamber 102 ensures that the filtered liquid has independent storage space, reducing the possibility of secondary pollution and improving overall wastewater treatment efficiency and quality.

[0035] Example 2

[0036] like Figures 1-6 As shown, based on Embodiment 1, this embodiment provides the structure of a first filter cartridge 5, a second filter cartridge 6, and a third filter cartridge 7, as detailed below:

[0037] A sludge suction pipe 4 is installed inside the storage chamber 101, extending to the bottom of the chamber. Impurities accumulated at the bottom of the storage chamber 101 will settle over time. Utilizing its structure extending to the bottom of the chamber, the sludge suction pipe 4 can extract the sludge, large particles, and other impurities settled at the bottom using a siphon or pump principle. This allows for regular cleaning of impurities at the bottom of the storage chamber 101, preventing impurities from accumulating and affecting the normal operation of the wastewater treatment tank, avoiding the re-mixing of impurities into the filtered liquid, extending the equipment's service life, and ensuring the stability of wastewater treatment results.

[0038] The first filter cylinder 5, the second filter cylinder 6, and the third filter cylinder 7 are all equipped with filter screens 10. The filter screens 10 are cylindrical, and there is a gap between the outer side of the filter screens 10 and the inner wall of the first filter cylinder 5, the second filter cylinder 6, and the third filter cylinder 7. When sewage flows into the first, second, and third filter cylinders 7, the liquid flows from the outside of the filter screens 10 into the inside. Because the filter screens 10 are cylindrical and there is a gap between them and the inner wall of the cylinder, impurities are intercepted on the outside by the filter screens 10, and clean liquid passes through the filter screens 10 into the gap and continues to flow to the next filter cylinder. The cylindrical filter screens 10 increase the filtration area and increase the amount of sewage filtered per unit time. The gap between the filter screens 10 and the inner wall of the cylinder facilitates the rapid discharge of the filtered liquid, reduces the residence time of the liquid in the cylinder, prevents clogging, and improves the filtration efficiency.

[0039] The first filter cartridge 5 and the second filter cartridge 6 are connected by a connecting pipe 12. A baffle 11 connects the first filter cartridge 5 and the second filter cartridge 6. The baffle 11 is connected to the inner wall of the tank body 1 and is fitted over the outside of the connecting pipe 12. The liquid filtered by the first filter cartridge 5 flows into the second filter cartridge 6 through the connecting pipe 12. The baffle 11 stabilizes the liquid flow direction and prevents turbulence, ensuring that the liquid can only flow from the first filter cartridge 5 to the second filter cartridge 6 through the connecting pipe 12. This guarantees that the liquid passes through each filter cartridge in a predetermined order, avoiding short-circuiting or backflow of the liquid in the filter chamber 102, improving the orderliness and stability of filtration, and thus enhancing the overall filtration effect.

[0040] The lower end of the first filter cylinder 5 is provided with a liquid inlet 2, which is connected to the center of the filter screen 10 inside the first filter cylinder 5. Wastewater enters from the liquid inlet 2 at the lower end of the first filter cylinder 5. Since the liquid inlet 2 is connected to the center of the filter screen 10, the liquid diffuses from the center to the surrounding area. During the diffusion process, impurities are intercepted by the filter screen 10, so that the liquid is evenly distributed in the filter screen 10, making full use of the filtration area of ​​the filter screen 10, avoiding local clogging of the filter screen 10 due to excessive liquid flow, extending the service life of the filter screen 10, and improving filtration efficiency and quality.

[0041] Both the second filter cartridge 6 and the third filter cartridge 7 have openings at their ends and are connected by a bend pipe 13. The liquid filtered by the second filter cartridge 6 flows out from the end opening, changes its flow direction through the bend pipe 13, and flows into the end opening of the third filter cartridge 7 to continue filtration. The bend pipe 13 is designed to guide the liquid smoothly from one filter cartridge to another, while also increasing the residence time of the liquid in the pipe to a certain extent, promoting further sedimentation of impurities, improving the filtration effect, and the bend pipe 13 can flexibly adjust the relative position of the two filter cartridges, which is convenient for equipment installation and layout.

[0042] A cone 14 is fixed to one side of the third filter cartridge 7. The cone 14 is connected to the outlet 3. The liquid filtered by the third filter cartridge 7 enters the cone 14. The cone 14 gathers the liquid and guides it to the outlet 3. The constricting structure of the cone 14 accelerates the liquid outflow. The gathering effect of the cone 14 increases the liquid flow rate, prevents the liquid from accumulating between the third filter cartridge 7 and the outlet 3, reduces the risk of impurity adhesion and blockage, ensures smooth liquid outflow, and improves the efficiency of sewage treatment.

[0043] One end of the cone 14 is attached to the side wall of the third filter cylinder 7, and the other end is connected to the liquid outlet 3. The cone 14 is tightly attached to the side wall of the third filter cylinder 7, and the filtered liquid flows directly from the third filter cylinder 7 into the cone 14. The other end is connected to the liquid outlet 3, realizing efficient liquid discharge. The tightly attached structure reduces the risk of liquid leakage, optimizes the liquid flow path, reduces flow resistance, further ensures the smoothness and stability of liquid discharge, and improves the reliability of equipment operation.

[0044] Example 3

[0045] like Figures 1-6 As shown, based on Embodiment 1 and Embodiment 2, this embodiment provides an installation method for the first filter cartridge 5, the second filter cartridge 6, and the third filter cartridge 7, as detailed below:

[0046] One end of the first filter cartridge 5, the second filter cartridge 6, and the third filter cartridge 7 penetrates the outside of the tank body 1 and is fixed with a cover 8. The cover 8 can be opened when needed to facilitate the inspection, cleaning, or replacement of the filter screens 10 inside the first, second, and third filter cartridges 7. When the equipment is running, the cover 8 is closed to ensure the sealing of the filter chamber 102, which facilitates equipment maintenance, extends the service life of the filter cartridges and filter screens 10, reduces maintenance costs, and improves the operability and continuous operation capability of the equipment without affecting the overall structure and operation of the equipment.

[0047] A sludge pump is installed at one end of the sludge suction pipe 4 that extends to the outside of the tank body 1. The sludge pump provides power to the sludge suction pipe 4, and the impurities at the bottom of the liquid storage chamber 101 are extracted from the tank body 1 through the sludge suction pipe 4. This enhances the sludge suction capacity, so that the impurities at the bottom of the liquid storage chamber 101 can be extracted more efficiently and quickly, thereby improving cleaning efficiency, reducing the difficulty and frequency of manual cleaning, and ensuring the long-term stable operation of the sewage treatment tank.

[0048] Working principle:

[0049] The wastewater treatment tank mainly consists of a tank body 1 and a filter plate 9. The tank body 1 has an inlet 2 and an outlet 3 at both ends, forming an internal chamber. The filter plate 9 divides the tank body 1 into a storage chamber 101 and a filtration chamber 102. Wastewater enters the chamber through the inlet 2 and is guided by the filter plate 9 to the filtration chamber 102. Inside the filtration chamber 102, the wastewater sequentially passes through a first filter cylinder 5, a second filter cylinder 6, and a third filter cylinder 7. Each filter cylinder has a cylindrical filter screen 10 installed inside, with a gap between the filter screen 10 and the inner wall of the cylinder. When wastewater flows into the filter cylinder, it flows from the outside of the filter screen 10 to the inside. Impurities are intercepted on the outside of the filter screen 10, while clean liquid passes through the filter screen 10 into the gap and continues to flow to the next filter cylinder.

[0050] The first filter cylinder 5 has a liquid inlet 2 at its lower end, which connects to the center of the filter screen 10. Wastewater is filtered by the filter screen 10 as it diffuses from the center outwards. The first filter cylinder 5 and the second filter cylinder 6 are connected by a connecting pipe 12, and a partition 11 is provided between them. The partition 11 is fitted over the connecting pipe 12 and connected to the inner wall of the tank 1. The liquid filtered by the first filter cylinder 5 flows into the second filter cylinder 6 through the connecting pipe 12. The partition 11 stabilizes the liquid flow and prevents turbulence. The ends of the second filter cylinder 6 and the third filter cylinder 7 are connected by a bent pipe 13. The liquid filtered by the second filter cylinder 6 flows out from its end opening and flows into the end opening of the third filter cylinder 7 through the bent pipe 13 for further filtration. Finally, a cone 14 fixed to one side of the third filter cylinder 7 collects the filtered liquid and guides it to the outlet 3 for discharge.

[0051] The storage chamber 101 is used to temporarily store the filtered liquid and some of the settled impurities. The sludge suction pipe 4 installed in the storage chamber 101 extends to the bottom of the chamber. It can use the principle of siphon or pump to extract the sludge, large particles and other impurities settled at the bottom of the tank 1, so as to realize the periodic cleaning of impurities at the bottom of the storage chamber 101.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate and not limit the technical solutions of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model without departing from the spirit and scope of this utility model. Any modifications or partial substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A sewage treatment tank characterised in that, include: The tank (1) has an inlet (2) and an outlet (3) at its two ends, and the tank (1) has a chamber inside. The filter plate (9) divides the tank (1) into a liquid storage chamber (101) and a filter chamber (102). The filter chamber (102) is provided with a first filter cylinder (5), a second filter cylinder (6) and a third filter cylinder (7). When sewage passes through the chamber, it can pass through the filter screens (10) inside the first filter cylinder (5), the second filter cylinder (6) and the third filter cylinder (7) in sequence.

2. A sewage treatment tank as claimed in claim 1, wherein The liquid storage chamber (101) is equipped with a sludge suction pipe (4), which extends to the bottom of the liquid storage chamber (101).

3. A sewage treatment tank as claimed in claim 2, wherein The first filter cylinder (5), the second filter cylinder (6) and the third filter cylinder (7) are all equipped with filter screens (10). The filter screens (10) are cylindrical, and there is a gap between the outside of the filter screens (10) and the inner walls of the first filter cylinder (5), the second filter cylinder (6) and the third filter cylinder (7).

4. The sewage treatment tank of claim 1, wherein The first filter cylinder (5) and the second filter cylinder (6) are connected by a connecting pipe (12). A partition (11) is connected between the first filter cylinder (5) and the second filter cylinder (6). The partition (11) is connected to the inner wall of the tank (1) and is sleeved on the outside of the connecting pipe (12).

5. The sewage treatment tank of claim 1, wherein The lower end of the first filter cylinder (5) is provided with a liquid inlet (2), which is connected to the center of the filter screen (10) inside the first filter cylinder (5).

6. The sewage treatment tank of claim 1, wherein The ends of the second filter cylinder (6) and the third filter cylinder (7) are both provided with openings and are connected by a bent pipe (13).

7. The sewage treatment tank of claim 1, wherein A cone (14) is fixed on one side of the third filter cylinder (7), and the cone (14) is connected to the liquid outlet (3).

8. A sewage treatment tank as claimed in claim 7, wherein One end of the cone (14) is attached to the side wall of the third filter cylinder (7), and the other end is connected to the liquid outlet (3).

9. A sewage treatment tank as claimed in claim 8, wherein One end of the first filter cylinder (5), the second filter cylinder (6) and the third filter cylinder (7) penetrates the outside of the tank body (1) and is fixed with a cap (8).

10. The sewage treatment tank of claim 2, wherein A sludge pump is installed at one end of the sludge suction pipe (4) that extends to the outside of the tank body (1).

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