Pneumatic acid adding device

Abstract

The utility model provides a pneumatic acid adding device which comprises a pressure stabilizing tank, an acid adding tank, a hose, a T-shaped connector, a throttling valve and a pressure release valve, the top of the pressure stabilizing tank is connected with a first pipeline, and the first pipeline is connected with external air supply equipment and used for conveying compressed air into the pressure stabilizing tank; the side wall of the surge tank is connected with a hose, the hose is connected with a T-shaped joint, the T-shaped joint is connected with an upper cover at the top of the acid adding tank through a second pipeline, the T-shaped joint is connected with a throttle valve through a third pipeline, and the throttle valve is connected with a pressure release valve through a fourth pipeline; an acid adding cover, a radar liquid level meter and a pressure sensor are arranged on an upper cover of the acid adding tank, acid liquor is contained in the acid adding tank, an acid liquor outlet pipe is arranged in the acid adding tank, and the acid liquor outlet pipe is connected with the reaction kettle through a fifth pipeline. The device is simple in structure, acid liquor is not in direct contact with equipment such as a pump and a valve, and the failure rate of the device is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a pneumatic acid adding device. Background Art

[0002] The chemical industry widely requires the addition of an appropriate acid solution to maintain the pH value during the reaction. Existing acid addition systems typically utilize pumps and valves, adjusting the valve opening to vary the amount of acid added. This results in direct contact between the acid and moving components, leading to corrosion and damage, shortening the lifespan of the system. Furthermore, corrosion of pumps and valves to a certain extent can easily lead to acid leaks, posing a safety hazard and even endangering the lives of on-site personnel. Utility Model Content

[0003] In response to the technical problems raised above, a pneumatic acid adding device is provided. The acid adding device of the utility model adopts a pneumatic acid adding method, providing a highly reliable and high-precision acid adding method. The core principle is that no moving parts of the acid adding device are in direct contact with the acid liquid. Only the acid liquid contacts the tank material itself inside the tank body. It has the characteristics of accurate metering, arbitrary adjustment of the acid adding amount as needed, and long service life. The technical means adopted by the utility model are as follows:

[0004] A pneumatic acid adding device, comprising: a pressure stabilizing tank, an acid adding tank, a hose, a T-shaped connector, a throttle valve, and a pressure relief valve; a first pipeline is connected to the top of the pressure stabilizing tank, and the first pipeline is connected to an external air supply device for delivering compressed air into the pressure stabilizing tank;

[0005] The side wall of the pressure stabilizing tank is connected to a hose, the hose is connected to a T-shaped connector, the T-shaped connector is connected to the upper cover on the top of the acid adding tank through a second pipeline, the T-shaped connector is connected to a throttle valve through a third pipeline, and the throttle valve is connected to a pressure relief valve through a fourth pipeline;

[0006] The upper cover of the acid adding tank is provided with an acid adding cover, a radar level gauge and a pressure sensor. Acid is contained in the acid adding tank. An acid outlet pipe is provided in the acid adding tank. The acid outlet pipe is connected to the reactor through a fifth pipeline.

[0007] Furthermore, it also includes a gas flow controller, the hose is connected to the gas flow controller, and the gas flow controller is connected to the T-type connector through a sixth pipeline.

[0008] Furthermore, pipeline butt joints are provided on both sides of the gas flow controller, and the pipeline butt joints on both sides are connected to the hose and the sixth pipeline respectively.

[0009] Furthermore, a pressure gauge is provided on the top of the pressure stabilizing tank.

[0010] Furthermore, a safety valve is provided on the top of the pressure stabilizing tank.

[0011] Furthermore, a one-way valve is provided on the first pipeline.

[0012] Furthermore, a pagoda joint is provided on the upper cover of the acid adding tank, and the top of the acid liquid outlet pipe is connected to the fifth pipeline through the pagoda joint.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The device of the utility model has a simple structure, and the acid liquid does not come into direct contact with equipment such as pumps and valves, which greatly reduces the failure rate of the device.

[0015] 2. The utility model has the advantages of simple operation, stable and reliable operation, accurate dosage, high precision and convenient adjustment.

[0016] 3. The utility model has low cost, easy maintenance and long service life.

[0017] 4. This utility model uses pneumatic acid dosing. Compressed air is introduced into the acid dosing tank. The acid in the tank is then drawn into the corresponding container through the acid outlet pipe due to the air pressure. No moving parts of the dosing device come into direct contact with the acid; only the acid in the tank comes into contact with the tank material itself, resulting in increased system reliability, low cost, and long service life.

[0018] Based on the above reasons, the utility model can be widely promoted in the fields of acid-adding chemical industry production and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 This is a structural diagram of the acid adding device of the utility model.

[0021] In the figure: 1. Check valve; 2. Pressure regulating tank; 3. Pressure gauge; 4. Safety valve; 5. Acid adding tank; 6. Hose; 7. Pipeline butt joint; 8. Gas flow controller; 9. T-type connector; 10. Throttle valve; 11. Pressure relief valve; 12. Acid adding cap; 13. Radar level gauge; 14. Pagoda connector; 15. Pressure sensor. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] The chemical industry widely requires the addition of an appropriate acid solution to maintain the pH value during the reaction. Existing acid addition systems typically utilize pumps and valves, adjusting the valve opening to vary the amount of acid added. This results in direct contact between the acid and moving components, leading to corrosion and damage, shortening the lifespan of the system. Furthermore, corrosion of pumps and valves to a certain extent can easily lead to acid leaks, posing a safety hazard and even endangering the lives of on-site personnel.

[0024] The present invention provides a pneumatic acid dosing device that effectively addresses the aforementioned issues. By adopting a pneumatic acid dosing method, no moving parts of the acid dosing device come into direct contact with the acid solution; only the acid solution contacts the tank material itself within the tank. This device features precise metering, adjustable acid dosing volume as needed, and a long service life. Therefore, the present invention has excellent feasibility and prospects for application.

[0025] The purpose of this utility model is: 1. to greatly improve the service life of the acid adding device; 2. to increase the acid adding accuracy, greatly improve the work efficiency, and ensure the stability of the production process and the safety of personnel.

[0026] This new system uses pneumatic acid dosing, introducing compressed air into the acid dosing tank. The acid in the tank is then drawn into the corresponding container through the acid outlet pipe due to the air pressure. No moving parts of the dosing system come into direct contact with the acid; only the acid in the tank comes into contact with the tank material itself, resulting in increased system reliability, low cost, and a long service life.

[0027] The utility model is a pneumatic acid adding device mainly composed of the following Figure 1As shown, the system primarily comprises a one-way valve 1, a surge tank 2, a pressure gauge 3, a safety valve 4, an acid addition tank 5, a hose 6, a pipeline butt joint 7, a gas flow controller 8, a T-joint 9, a throttle valve 10, a pressure relief valve 11, an acid addition cap 12, a radar level gauge 13, a pagoda joint 14, and a pressure sensor 15. A first pipeline is connected to the top of the surge tank 2, which is connected to an external air supply device for supplying compressed air into the surge tank 2. The first pipeline is provided with a one-way valve 1. The pressure gauge 3 and the safety valve 4 are both mounted on the top of the surge tank 2. The sidewall of the surge tank 2 is connected to one end of a hose 6, the other end of which is connected to a gas flow controller 8. The gas flow controller 8 is connected to a T-joint 9 via a sixth pipeline. Pipeline butt joints 7 are provided on both sides of the gas flow controller 8, each of which is connected to the hose 6 and the sixth pipeline, respectively. T-joint 9 is connected to each other with the loam cake on acid adding tank 5 top by the second pipeline, and T-joint 9 is connected to each other with throttle valve 10 by the 3rd pipeline, and throttle valve 10 is connected to each other with pressure relief valve 11 by the 4th pipeline.Acid adding lid 12, radar level gauge 13, pagoda joint 14 and pressure sensor 15 are all installed on the loam cake on acid adding tank 5, and the inside of acid adding tank 5 fills acid solution, and the inside of acid adding tank 5 is provided with the acid liquid outlet pipe, and the acid liquid outlet pipe is connected to each other with reactor by the 5th pipeline.Wherein the top of the acid liquid outlet pipe is connected to each other with the 5th pipeline by pagoda joint 14.External air supply equipment, the first pipeline, surge tank 2, hose 6, the second pipeline etc. can constitute pneumatic system.

[0028] The main components of this utility model are used for:

[0029] 1) Check valve 1 is used in pneumatic systems to prevent reverse flow of compressed air.

[0030] 2) The pressure-surge tank 2 is used to maintain the pressure of the pneumatic system.

[0031] 3) The gas flow controller 8 (using an existing gas flow controller) is used to control the intake volume of compressed air, thereby changing the rate of addition of the acid solution.

[0032] 4) The pressure relief valve 11 is used to quickly release the air pressure in the tank, allowing the acid liquid in the outlet pipe to quickly flow back, thereby quickly interrupting the acid addition.

[0033] 5) The throttle valve 10 is used to adjust the pressure relief speed to prevent excessive acid backflow instantaneously, which would cause a delayed response to the next acid addition.

[0034] 6) Pressure gauge 3 is used to detect the air pressure in surge tank 2. The pressure value corresponds to the height of the liquid column at the acid outlet. This facilitates the early control of the flow meter (gas flow controller 8) opening to generate back pressure, shortening the time it takes for the acid to flow from the tank to the outlet and improving the system's response speed during acid addition.

[0035] 7) The radar level gauge 13 is used to detect the depth of the liquid level in the acid adding tank 5, so as to monitor the remaining volume of the acid in the tank in real time.

[0036] During the vanadium oxide leaching process, it is necessary to add appropriate dilute sulfuric acid to the reactor to maintain the pH value stable within a certain range during the reaction. The device needs to be operated according to the following steps.

[0037] 1. First, install the gas flow controller 8, pressure sensor 15, throttle valve 10, pressure relief valve 11, and radar level gauge 13 in the pneumatic acid adding device in advance, and connect them to the PLC control system (existing control system) and monitor them through WINCC software (existing software).

[0038] 2. Connect the acid liquid outlet pipe of the acid adding tank 5 to the acid liquid inlet of the reactor.

[0039] 3. Set the compressed air intake speed of the gas flow controller 8.

[0040] 4. Turn on the compressed air switch of the external air supply equipment. The compressed air flows to the acid adding tank 5 through the pressure regulating tank 2. The acid liquid in the acid adding tank 5 enters the reactor through the acid outlet pipe (acid liquid outlet pipe) due to the air pressure. When the acid liquid in the reactor reaches the specified demand, stop introducing compressed air immediately.

[0041] 5. Open the throttle valve 10 and the pressure relief valve 11 (solenoid valve) to quickly release the air pressure in the tank, so that the acid in the acid outlet pipe quickly flows back, thereby quickly interrupting the acid addition. At this time, the acid addition work is completed.

[0042] The utility model has a simple structure, and the acid liquid does not come into direct contact with moving parts of equipment such as pumps and valves, which greatly reduces the failure rate of the device, increases system reliability, and reduces costs. In addition, the dosing is accurate and high-precision, greatly improving work efficiency, ensuring the stability of the production process and the safety of personnel. It can be promoted to the chemical industry in the field of acid addition in highly corrosive environments.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pneumatic acid adding device, characterized in that: include: A pressure stabilizing tank (2), an acid adding tank (5), a hose (6), a T-shaped connector (9), a throttle valve (10) and a pressure relief valve (11); the top of the pressure stabilizing tank (2) is connected to a first pipeline, the first pipeline is connected to an external air supply device and is used to transport compressed air into the pressure stabilizing tank (2); The side wall of the pressure stabilizing tank (2) is connected to a hose (6), the hose (6) is connected to a T-shaped connector (9), the T-shaped connector (9) is connected to the upper cover on the top of the acid adding tank (5) through a second pipeline, the T-shaped connector (9) is connected to a throttle valve (10) through a third pipeline, and the throttle valve (10) is connected to a pressure relief valve (11) through a fourth pipeline; The upper cover of the acid adding tank (5) is provided with an acid adding cover (12), a radar level gauge (13) and a pressure sensor (15); the acid adding tank (5) is filled with acid liquid; the acid adding tank (5) is provided with an acid liquid outlet pipe; and the acid liquid outlet pipe is connected to the reactor through a fifth pipeline.

2. The pneumatic acid adding device according to claim 1, characterized in that: It also includes a gas flow controller (8), the hose (6) is connected to the gas flow controller (8), and the gas flow controller (8) is connected to a T-type connector (9) via a sixth pipeline.

3. The pneumatic acid adding device according to claim 2, characterized in that: Pipeline butt joints (7) are provided on both sides of the gas flow controller (8), and the pipeline butt joints (7) on both sides are connected to the hose (6) and the sixth pipeline respectively.

4. The pneumatic acid adding device according to claim 1, characterized in that: A pressure gauge (3) is provided on the top of the pressure stabilizing tank (2).

5. The pneumatic acid adding device according to claim 1, characterized in that: A safety valve (4) is provided on the top of the pressure stabilizing tank (2).

6. The pneumatic acid adding device according to claim 1, characterized in that: A one-way valve (1) is provided on the first pipeline.

7. The pneumatic acid adding device according to claim 1, characterized in that: A pagoda joint (14) is provided on the upper cover of the acid adding tank (5), and the top of the acid liquid outlet pipe is connected to the fifth pipeline through the pagoda joint (14).

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