Lower-acid-in type pickling tank

Abstract

The utility model relates to quartz sand pickling technical field, concretely is a kind of lower part enters acid type pickling tank, including tank body, the top and bottom of tank body are provided with feed inlet and discharge outlet respectively, the bottom inner wall of tank body is fixed with the coaxial arrangement of multiple turns annular acid delivery coil pipe, it is connected through communicating pipe between adjacent acid delivery coil pipe, the acid supply pipe that the acid delivery coil pipe in the lowermost is connected with passing through tank body lateral wall, first valve is installed on acid supply pipe, the top of acid delivery coil pipe is equipped with multiple acid outlet nozzle, the inside of tank body is provided with anti-blocking subassembly, the top of tank body is installed with pressure relief subassembly.The utility model discloses through the multiple turns coaxial acid delivery coil pipe of tank body bottom, it is connected and communicates through communicating pipe between adjacent coil pipe, then cooperate with the multiple acid outlet nozzle of the top inclination of acid delivery coil pipe setting, make acid liquor form " disturbance flow field " when being sprayed from lower portion to upper portion in tank body, acid liquor can be fully penetrated to quartz sand material from lower portion to upper portion in tank body, avoid cleaning dead zone, overcome the deficiency of prior art.

Description

Technical Field

[0001] This utility model relates to the field of quartz sand pickling technology, specifically a bottom-inlet pickling tank. Background Technology

[0002] The main purpose of acid washing of quartz sand is to remove metal oxides such as iron, aluminum, and magnesium, as well as amorphous impurities, from the surface and even inside of quartz sand particles through the chemical reaction between acid and impurity components, thereby significantly improving its chemical purity and whiteness.

[0003] Currently, the "top-entry acid" pickling process is commonly used in industry, where acid is injected from the top of the pickling tank and allowed to flow naturally through the quartz sand layer under gravity. However, this method has inherent drawbacks: as the acid penetrates the dense material layer, it easily forms fixed vertical preferential channels due to the "channeling effect," resulting in a large amount of quartz sand located between the channels failing to effectively contact the acid, thus creating cleaning dead zones. Ultimately, this leads to problems such as uneven pickling, low efficiency, and material waste.

[0004] To overcome the aforementioned technical bottlenecks, it is particularly urgent to develop a new type of pickling equipment that can achieve uniform acid distribution. Utility Model Content

[0005] This invention provides a bottom-inlet acid pickling tank to solve the problem of dead zones in top-inlet acid pickling tanks mentioned in the background art.

[0006] To address the existing problems, this utility model provides a bottom-inlet acid pickling tank, comprising a tank body, with an inlet and a outlet at the top and bottom of the tank body, respectively. Multiple coaxially arranged annular acid delivery coils are fixedly installed on the inner wall of the bottom of the tank body, with adjacent acid delivery coils connected by a connecting pipe. An acid supply pipe passing through the side wall of the tank body is connected to the lowest acid delivery coil, and a first valve is installed on the acid supply pipe. Multiple acid outlets are located at the top of the acid delivery coils. An anti-clogging component is installed inside the tank body, and a pressure relief component is installed at the top of the tank body.

[0007] Furthermore, the anti-clogging component includes a water pipe arranged along the tank axis, the lower end of the water pipe extending and aligned with the upper port of the discharge port, and the upper end of the water pipe penetrating the top of the tank and connected to a second valve.

[0008] Furthermore, the pressure relief assembly includes a pressure relief pipe fixed to the top of the tank, and a solenoid valve is installed on the pressure relief pipe.

[0009] Furthermore, the acid outlet is an inclined nozzle, and its spray direction is configured to create a disturbed acid flow field inside the tank.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention utilizes a multi-coil coaxial acid delivery coil at the bottom of the tank, with adjacent coils connected by a connecting pipe. Combined with multiple acid outlets tilted at the top of the acid delivery coil, this creates a "turbulent flow field" when the acid is sprayed upwards from the bottom of the tank. The acid can fully penetrate the quartz sand material from bottom to top within the tank, avoiding dead zones during cleaning and overcoming the shortcomings of existing technologies. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the tank body of this utility model;

[0014] In the diagram: 1. Tank body; 2. Inlet; 3. Outlet; 4. Annular acid conveying coil; 5. Connecting pipe; 6. Acid supply pipe; 7. First valve; 8. Acid outlet; 9. Anti-clogging component; 901. Water pipe; 902. Second valve; 10. Pressure relief component; 1001. Pressure relief pipe; 1002. Solenoid valve. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-2 A bottom-inlet acid pickling tank includes a tank body 1. The top and bottom of the tank body 1 are respectively provided with an inlet 2 and a outlet 3. The bottom inner wall of the tank body 1 is fixedly provided with a multi-ringed acid conveying coil 4 arranged coaxially. Adjacent acid conveying coils 4 are connected by a connecting pipe 5. The bottom acid conveying coil 4 is connected to an acid supply pipe 6 that passes through the side wall of the tank body 1. A first valve 7 is installed on the acid supply pipe 6. The top of the acid conveying coil 4 is provided with multiple acid outlets 8. The inside of the tank body 1 is provided with an anti-clogging component 9, and the top of the tank body 1 is provided with a pressure relief component 10.

[0017] The anti-blocking component 9 includes a water pipe 901 arranged along the axis of the tank body 1. The lower end of the water pipe 901 extends and is aligned with the upper port of the discharge port 3. The upper end of the water pipe 901 passes through the top of the tank body 1 and is connected to a second valve 902.

[0018] The pressure relief assembly 10 includes a pressure relief pipe 1001 fixed to the top of the tank body 1, and a solenoid valve 1002 is installed on the pressure relief pipe 1001.

[0019] Among them, the acid outlet 8 is an inclined nozzle, and its spray direction is configured to create a disturbed acid flow field inside the tank.

[0020] Working Principle: Before use, the pickling tank is installed in the production workshop via flanges on the inlet 2 and outlet 3. During operation, the quartz sand raw material to be treated is first added into the tank through the inlet 2 at the top of the tank 1. After addition, ensure that the inlet 2 is sealed. Next, open the first valve 7 on the acid supply pipe 6. The pressurized acid is then transported through the acid supply pipe 6 to the multi-ringed acid delivery coil 4 fixedly installed on the inner wall of the bottom of the tank 1. Since adjacent acid delivery coils 4 are connected by connecting pipes 5, the acid can be evenly distributed within each coil. Subsequently, the acid is sprayed out from multiple inclined acid outlets 8 at the top of the acid delivery coils 4. The inclined acid outlets 8 create a turbulent acid flow field within the tank 1, causing the acid to flow upwards from the bottom of the tank 1, fully contacting and reacting with the quartz sand inside the tank. This effectively avoids the "channeling effect" and the generation of cleaning dead zones, ensuring uniform pickling.

[0021] During the pickling process, the solenoid valve 1002 on the pressure relief pipe 1001 in the pressure relief assembly 10 can be controlled to open, releasing the pressure inside the tank through the pressure relief pipe 1001, facilitating the smooth upward flow of acid within the tank 1. After the pickling operation is completed, the discharge port 3 at the bottom of the tank 1 is opened to discharge the treated quartz sand and waste liquid. If the discharge port 3 becomes blocked, the second valve 902 on the water pipe 901 in the anti-blocking assembly 9 is opened, and pressurized water is delivered through the water pipe 901 to the upper port of the discharge port 3 to flush the blockage and ensure smooth discharge.

[0022] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A bottom-feed pickling tank, comprising a tank body (1), wherein the top and bottom of the tank body (1) are respectively provided with a feed inlet (2) and a discharge outlet (3), characterized in that: The bottom inner wall of the tank (1) is fixedly provided with a multi-ringed acid delivery coil (4) arranged coaxially. Adjacent acid delivery coils (4) are connected by a connecting pipe (5). The lowest acid delivery coil (4) is connected to an acid supply pipe (6) that passes through the side wall of the tank (1). A first valve (7) is installed on the acid supply pipe (6). The top of the acid delivery coil (4) is provided with multiple acid outlets (8). The tank (1) is equipped with an anti-blocking component (9) inside and a pressure relief component (10) is installed on the top of the tank (1).

2. The bottom-inlet acid pickling tank according to claim 1, characterized in that: The anti-clogging component (9) includes a water pipe (901) arranged along the axis of the tank (1), the lower end of the water pipe (901) extends and is aligned with the upper port of the discharge port (3), and the upper end of the water pipe (901) passes through the top of the tank (1) and is connected to a second valve (902).

3. A bottom-inlet acid pickling tank according to claim 1, characterized in that: The pressure relief assembly (10) includes a pressure relief pipe (1001) fixed to the top of the tank (1), and a solenoid valve (1002) is installed on the pressure relief pipe (1001).

4. A bottom-inlet acid pickling tank according to any one of claims 1 to 3, characterized in that: The acid outlet (8) is an inclined nozzle whose spray direction is configured to create a disturbed acid flow field inside the tank.

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