A clarifying tank capable of removing scum
By installing a foam guiding channel and a scraper in the clarification tank, combined with a closed guiding channel and an overflow hole, the foam problem in the use of carbide lime solution is solved, ensuring clarity and stable system operation.
Patent Information
- Application Number
- CN202522024039.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-20
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-20
AI Technical Summary
When using calcium lime solution, existing clarification tanks are prone to producing foam, which affects the turbidity of the supernatant, leading to a decrease in the absorption effect of the spray absorption tower, wear or blockage of the scrubbing pump, and in severe cases, system shutdown.
A foam guiding tank and a foam scraper are installed in the clarification tank. Combined with a closed supernatant guiding tank and an overflow hole, the foam is removed by the scraper driven by the stirring shaft, and the foam is discharged through the foam rinsing port to prevent it from entering the supernatant storage tank.
Effectively removes scum, ensures the clarity of the supernatant, prevents wear and blockage of the scrubbing pump, ensures the normal operation of the spray absorption tower, and reduces the risk of system shutdown.
Smart Images
Figure CN224672167U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clarifier technology, and in particular to a clarifier capable of removing foam. Background Technology
[0002] Clarifying tanks are mostly used for solid-liquid separation in chemical production. They utilize the principles of centrifugal sedimentation and gravity sedimentation to precipitate and separate insoluble substances such as calcium and magnesium in brine. The precipitate is discharged from the bottom of the tank. Clarifying tanks are also suitable for treating chlorosilane waste gas.
[0003] Chlorosilane tail gas treatment systems typically use an alkaline solution obtained by dissolving calcium lime. Solid-liquid separation is achieved in a clarifier tank, with the supernatant entering a spray absorption tower for tail gas absorption. Solid slurry sediment is discharged from the bottom of the clarifier tank. In actual operation, using calcium lime, compared to calcium carbide slurry solution, easily leads to hydrolysate forming foam at the top of the clarifier tank, affecting the turbidity of the supernatant. This results in turbidity at the top of the clarifier tank, ultimately impacting the absorption efficiency of the spray absorption tower. Furthermore, it causes wear and tear on the scrubbing pump, potentially clogging it and forcing the spray absorption tower to shut down. In severe cases, it can lead to a system-wide shutdown. Therefore, foam removal from the clarifier tank is extremely important. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a clarification tank that can remove foam. It can effectively prevent the foam in the clarification tank from affecting the absorption of the spray absorption tower and causing wear on the scrubbing pump.
[0005] To achieve this technical objective, the present invention adopts the following solution: A clarification tank capable of removing foam includes a tank body, a slurry inlet on one side of the tank body, a slurry discharge outlet at the bottom of the tank body, a supernatant guide channel at the top of the tank body, the supernatant guide channel being connected to a supernatant overflow outlet, a foam guide channel above the supernatant guide channel being fixedly connected to the tank body, the foam guide channel being connected to a foam collection outlet, a foam scraper being positioned above the foam guide channel, and a stirring shaft being installed inside the tank body, with the foam scraper being connected to the stirring shaft.
[0006] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention features a foam guiding channel and a foam scraper above the supernatant guiding channel, effectively removing foam from the clarification tank and preventing it from affecting the absorption of the spray absorption tower and causing wear on the scrubbing pump. The supernatant guiding channel is a closed structure with an overflow hole, allowing the supernatant to collect into the supernatant storage tank while preventing foam from entering. The foam guiding channel also includes a foam rinsing port to flush away the collected foam, effectively preventing clogging.
[0007] Furthermore, a central cylinder is provided inside the barrel, which is fixedly connected to the barrel by a support, and the slurry inlet extends inward into the interior of the central cylinder.
[0008] Furthermore, the supernatant guiding channel is composed of an annular first supernatant guiding channel and multiple radial second supernatant guiding channels. The first supernatant guiding channel is fixedly connected to the barrel body, and one end of the second supernatant guiding channel is connected to the central cylinder, while the other end is connected to the first supernatant guiding channel.
[0009] Furthermore, the supernatant guiding tank has a closed structure and is equipped with an overflow hole.
[0010] Furthermore, both the supernatant overflow port and the foam collection port are located on the side wall of the tank.
[0011] Furthermore, a motor is fixed at the upper end of the barrel, the output end of the motor is connected to the stirring shaft, and a mud collecting rake is connected to the lower end of the stirring shaft. The mud collecting rake is located at the bottom of the barrel.
[0012] Furthermore, a foam rinsing port is provided on the side wall of the barrel, and the foam rinsing port is connected to the foam guiding tank.
[0013] Furthermore, a manhole is also provided at the bottom of the barrel. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the clarification tank structure capable of removing foam in an embodiment of this utility model.
[0015] Figure 2 This is a top view of the clarification tank capable of removing foam in an embodiment of this utility model.
[0016] The following are marked in the diagram: 1. Tank body; 2. Slurry / residue inlet; 3. Slurry / residue discharge outlet; 4. First supernatant guide channel; 5. Supernatant overflow outlet; 6. Motor; 7. Agitator shaft; 8. Foam scraper; 9. Foam guide channel; 10. Foam collection outlet; 11. Foam rinsing outlet; 12. Central cylinder; 13. Support; 14. Second supernatant guide channel; 15. Manhole; 16. Sludge rake. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0018] Please see Figure 1 and Figure 2 This utility model provides a clarification tank capable of removing foam, including a tank body 1, a slurry inlet 2, a slurry discharge outlet 3, a first supernatant guide channel 4, a supernatant overflow outlet 5, a motor 6, a stirring shaft 7, a foam scraper 8, a foam guide channel 9, a foam collection outlet 10, a foam rinsing outlet 11, a central cylinder 12, a support 13, a second supernatant guide channel 14, a manhole 15, and a mud rake 16.
[0019] The tank body 1 has a central cylinder 12 inside, which is fixedly connected to the tank body 1 by a support 13. A slurry inlet 2 is provided on one side of the tank body 1, extending inward into the central cylinder 12. A supernatant guiding channel is provided at the top of the tank body 1, consisting of an annular first supernatant guiding channel 4 and multiple radial second supernatant guiding channels 14. The first supernatant guiding channel 4 is fixedly connected to the tank body 1. One end of each second supernatant guiding channel 14 is connected to the central cylinder 12, and the other end is connected to the first supernatant guiding channel 4. A supernatant overflow port 5, at the same height as the first supernatant guiding channel 4, is provided on the side wall of the tank body 1. The supernatant overflow port 5 is connected to the first supernatant guiding channel 4 and is also connected to a supernatant storage tank.
[0020] In one specific embodiment, the first supernatant guiding tank 4 and the second supernatant guiding tank 14 are closed structures, and the supernatant guiding tank is provided with an overflow hole. When the height of the supernatant reaches the height of the supernatant guiding tank, the supernatant enters the supernatant guiding tank through the overflow hole, and then collects through the first supernatant guiding tank 4 and enters the supernatant storage tank through the supernatant overflow port 5. The foam is blocked outside the supernatant guiding tank, preventing the foam from entering the supernatant and affecting the normal operation of the subsequent spray absorption tower and scrubbing pump.
[0021] A motor 6 is fixed at the upper end of the barrel 1. The output end of the motor 6 is connected to a stirring shaft 7. The stirring shaft 7 extends into the interior of the barrel 1. The stirring shaft 7 passes through the central cylinder 12 and is connected to a mud collection rake 16. The mud collection rake 16 is located at the bottom of the barrel 1. A slurry discharge port 3 is provided at the lower end of the barrel 1.
[0022] The top of the tank body 1 is equipped with a foam scraper 8 and a foam guiding channel 9. The foam scraper 8 is connected to the stirring shaft 7 and is located above the foam guiding channel 9. The foam guiding channel 9 is fixedly connected to the tank body 1 and is located above the first supernatant guiding channel 4. The foam scraper 8 rotates at a low speed with the stirring shaft 7 of the clarification tank, scraping the foam higher than the supernatant guiding channel into the foam guiding channel 9. One side of the tank body 1 is equipped with a foam collection port 10 at the same height as the foam guiding channel 9, and the other side is equipped with a foam rinsing port 11 at the same height as the foam guiding channel 9. Both the foam collection port 10 and the foam rinsing port 11 are connected to the foam guiding channel 9. The foam rinsing port 11 can rinse the foam collected in the foam guiding channel 9 and allow it to flow back to the carboxylic acid tank through the foam collection port 10, effectively preventing the foam in the foam guiding channel 9 from settling and clogging the foam guiding channel 9.
[0023] A manhole 15 is also provided at the bottom of the barrel body 1 for maintenance.
[0024] The working process of this utility model is as follows: The calcium lime slag slurry enters the central cylinder 12 of the clarification tank through the slurry inlet 2 and settles downwards. As the calcium lime slag slurry enters, the supernatant level gradually rises. The supernatant is collected through the overflow hole on the second supernatant guiding channel 14 and flows into the second supernatant guiding channel 14, then through the first supernatant guiding channel 4 and the supernatant overflow port 5 into the supernatant storage tank, and then transported to the spray absorption tower by a rinsing pump. Foam is accumulated between the second supernatant guiding channels 14. The motor 6 is started, driving the foam scraper 8 to rotate and scrape the foam into the foam guiding channel 9. A portion of the supernatant is pumped through the supernatant flushing port 11 to flush the foam guiding channel 9, and finally flows to the calcium lime pool. The slag discharge port 3 discharges the bottom sediment, and the motor 6 drives the mud rake 16 to rotate to prevent the slag slurry from continuously settling and solidifying, causing blockage.
[0025] This invention effectively ensures the clarity of the supernatant, preventing some foam from entering the supernatant storage tank. It reduces wear on the supernatant transfer pump and decreases the frequency of maintenance, preventing system shutdown due to severe blockage of the rinsing pump, thus ensuring the safe and stable operation of the production system.
[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. If these modifications and variations fall within the scope of the claims of this utility model and their equivalents, they should be considered to be within the protection scope of this utility model.
Claims
1. A clarification tank capable of removing scum, comprising a tank body (1), a slurry inlet (2) provided on one side of the tank body (1), and a slurry discharge outlet (3) provided at the bottom of the tank body (1), characterized in that, A supernatant guide channel is provided on the upper part of the barrel (1), and the supernatant guide channel is connected to the supernatant overflow port (5). A foam guide channel (9) is provided above the supernatant guide channel. The foam guide channel (9) is fixedly connected to the barrel (1). The foam guide channel (9) is connected to the foam collection port (10). A foam scraper (8) is provided above the foam guide channel (9). A stirring shaft (7) is provided inside the barrel (1). The foam scraper (8) is connected to the stirring shaft (7).
2. The clarifying tank capable of removing scum according to claim 1, characterized in that, The barrel (1) has a central cylinder (12) inside. The central cylinder (12) is fixedly connected to the barrel (1) by a support (13). The slurry inlet (2) extends inward into the interior of the central cylinder (12).
3. The clarifying tank capable of removing scum according to claim 2, characterized in that, The supernatant guiding channel is composed of a first annular supernatant guiding channel (4) and multiple radial second supernatant guiding channels (14). The first supernatant guiding channel (4) is fixedly connected to the barrel body (1). One end of the second supernatant guiding channel (14) is connected to the central cylinder (12), and the other end is connected to the first supernatant guiding channel (4).
4. The clarifier tank capable of removing scum according to claim 1, characterized in that, The supernatant guide tank has a closed structure and is equipped with an overflow hole.
5. The clarifying tank capable of removing scum according to claim 1, characterized in that, The supernatant overflow port (5) and the foam collection port (10) are both located on the side wall of the barrel (1).
6. The clarifying tank capable of removing scum according to claim 1, characterized in that, A motor (6) is fixed at the upper end of the barrel (1). The output end of the motor (6) is connected to the stirring shaft (7). A mud collection rake (16) is connected at the lower end of the stirring shaft (7). The mud collection rake (16) is located at the bottom of the barrel (1).
7. The clarifying tank capable of removing scum according to claim 1, characterized in that, A foam rinsing port (11) is also provided on the side wall of the barrel (1), and the foam rinsing port (11) is connected to the foam guiding tank (9).
8. The clarifying tank capable of removing scum according to claim 1, characterized in that, A manhole (15) is also provided at the bottom of the barrel (1).