Acid supply system of pickling equipment
By setting up a sealed box in the acid supply system of the pickling equipment and using a PLC controller to achieve automatic water replenishment and pressure difference formation, the problems of frequent acid-resistant pump failures and insufficient adsorption capacity are solved, and the pump is simple to repair and cost reduction are achieved.
Patent Information
- Application Number
- CN202421513187.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-28
AI Technical Summary
In steel production, acid-resistant pumps have frequent failures, especially when they are used at high frequency, which leads to wear and acid leakage in the pump body. After modification to the ground, the existing pumps cannot meet the acid adsorption capacity requirements, which increases the cost and maintenance difficulty.
A pickling equipment acid supply system is designed. By setting up a sealed box and using a PLC controller to achieve automatic water replenishment and pressure difference formation, it attracts the acid liquid in the underground constant temperature tank into the sealed box and is transported to the pickling tank by an acid-resistant pump, which simplifies the pump maintenance process and reduces costs.
It effectively solves the problems of frequent acid-resistant pump failures and insufficient adsorption capacity, simplifies the pump maintenance process, reduces costs, and improves the safety and reliability of the system.
Smart Images
Figure CN222923247U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel production, in particular to an acid supply system for pickling equipment. Background Art
[0002] In steel production, it is necessary to conduct acid pickling macro inspection on products. Acid pickling equipment is used during the macro inspection. To avoid excessive heat loss, during installation, the acid pickling heating tank, i.e., the underground constant temperature tank in this application, is installed in an installation tank set underground. An acid-resistant pump is installed at the bottom of the heating tank. Hydrochloric acid is pumped into the pickling equipment through the acid-resistant pump, and the work is in a long-term circulation state. In actual use, the acid-resistant pump may malfunction, especially more frequently when the usage frequency is high.
[0003] Since the acid-resistant pump is at the bottom of the acid tank, it is troublesome to conduct spot checks and replacements. The acid-resistant pump has a full bakelite main body. If the malfunction of the acid-resistant pump is not discovered in time, the pump body will be severely worn, and acid leakage will occur. There are also significant safety hazards in repairing and dealing with acid leakage. If the acid-resistant pump is moved to the ground, the existing acid-resistant pump cannot meet the requirement for the adsorption capacity of the acid solution. If a new acid-resistant pump that can meet the requirements is purchased, it will increase costs and be time-consuming and laborious. Summary of the Utility Model
[0004] In order to overcome the deficiencies of the above-mentioned prior art, the utility model provides an acid supply system for pickling equipment, which can move the pickling pump to the ground, has a simple structure, is economical and practical, and enables the pickling pump to meet the requirements for adsorption capacity during use.
[0005] The technical solution adopted by the utility model is: an acid supply system for pickling equipment, including an underground constant temperature tank, an acid-resistant pump, and a pickling tank. The underground constant temperature tank is installed in an installation tank below the ground. The input end of the acid-resistant pump is connected to the underground constant temperature tank, and the output end of the acid-resistant pump is connected to the pickling tank arranged on the ground. The acid-resistant pump is arranged on the ground on one side of the pickling tank. A sealing box is connected to the pipeline connecting the acid-resistant pump and the underground constant temperature tank. The sealing box is arranged on the ground on one side of the acid-resistant pump. A first valve is arranged on the pipeline connecting the sealing box and the acid-resistant pump. The sealing box is connected to a water supply device. A second valve is arranged on the pipeline connecting the sealing box and the water supply device.
[0006] Further, the connection port between the sealing box and the underground constant temperature tank is arranged at the top of the sealing box.
[0007] Further, a liquid level observation window is arranged on the side of the sealing box.
[0008] Further, the water supply device includes a water tank, a water supply pump, and a second valve. The water tank is connected to the sealing box. A water supply pump is arranged on the pipeline connecting the water tank and the sealing box. A second valve is arranged on the pipeline connecting the water supply pump and the sealing box.
[0009] Further, a liquid level sensor is arranged in the sealed box. The liquid level sensor is connected to a PLC controller. The first valve and the second valve are both set as electric valves. The first valve, the second valve, and the water supply pump are all connected to the PLC controller.
[0010] In this utility model, a sealed box is provided. When in use, the sealed box is first filled with water and its valves are closed. Then the acid-resistant pump is started to suck out the water in the sealed box, so as to form a pressure difference between the sealed box and the underground constant temperature bath. When the pressure difference is large enough, the acid liquid in the underground constant temperature bath enters the sealed box and is transported to the pickling tank by the acid-resistant pump.
[0011] The structure of this utility model is simple, economical and practical, making the maintenance of the acid-resistant pump more convenient and saving costs. Description of the Drawings
[0012] Figure 1 It is a schematic diagram of the acid supply system before improvement.
[0013] Figure 2 It is a schematic structural diagram of this utility model.
[0014] In the figure: 1. Underground constant temperature bath, 2. Acid-resistant pump, 3. Pickling tank, 4. Sealed box, 5. First valve, 6. Water supply device, 61. Water tank, 62. Water supply pump, 63. Second valve, 7. Observation window, 8. Liquid level sensor, 9. PLC controller. Detailed Embodiments
[0015] In order to more clearly understand the technical solution of this utility model, the following further describes this utility model with reference to the drawings.
[0016] As Figure 1 - Figure 2 shown, an acid supply system for pickling equipment includes an underground constant temperature bath 1, an acid-resistant pump 2, and a pickling tank 3. The underground constant temperature bath 1 is arranged in an installation groove below the ground. The input end of the acid-resistant pump 2 is connected to the underground constant temperature bath 1, and the output end of the acid-resistant pump 2 is connected to the pickling tank 3 arranged on the ground. The acid-resistant pump 2 is arranged on the ground on one side of the pickling tank 3. A sealed box 4 is connected to the pipeline where the acid-resistant pump 2 is connected to the underground constant temperature bath 1. The connection port between the sealed box 4 and the underground constant temperature bath 1 is arranged at the top of the sealed box 4. The sealed box 4 is arranged on the ground on one side of the acid-resistant pump 2. A first valve 5 is arranged on the pipeline where the sealed box 4 is connected to the acid-resistant pump 2. The sealed box 4 is connected to a water supply device 6. A second valve 63 is arranged on the pipeline where the sealed box 4 is connected to the water supply device 6. When in use, the sealed box 4 needs to be first filled with water by the water supply device 6. When filling water into the sealed box 4, the first valve 5 needs to be closed and the second valve 63 needs to be opened. After the sealed box 4 is filled with water, the second valve 63 is closed and the first valve 5 is opened, and then the acid-resistant pump 2 works;
[0017] Preferably, a liquid level observation window 7 is provided on the side of the sealed box 4, which is convenient for the staff to observe the liquid level in the sealed box 4;
[0018] Preferably, the water supply device 6 includes a water tank 61, a water supply pump 62 and a second valve 63. The water tank 61 is connected to the sealed box 4. A water supply pump 62 is provided on the pipeline connecting the water tank 61 and the sealed box 4. A second valve 63 is provided on the pipeline connecting the water supply pump 62 and the sealed box 4. A liquid level sensor 8 is arranged in the sealed box 4, and the liquid level sensor 8 is connected to the PLC controller 9. The first valve 5 and the second valve 63 are both set as electric valves. The first valve 5, the second valve, and the water supply pump 62 are all connected to the PLC controller 9. By setting the PLC controller 9, etc., the water replenishment of the sealed box 4 is automatically controlled. When initially replenishing water to the sealed box 4, the PLC controller 9 controls the first valve 5 to close, the second valve 63 to open, and the water supply pump 62 to start to supply water to the sealed box 4. When the sealed box 4 is filled with water, the liquid level sensor 8 will send a signal to the PLC controller 9, and the PLC controller 9 controls the second valve 63 to close and the water supply pump 62 to stop working.
[0019] Working principle: During use, first fill the sealed box 4 with water. After the sealed box 4 is filled with water, open the first valve 5 and start the acid-resistant pump 2. The acid-resistant pump 2 sucks the water in the sealed box 4, creating a pressure difference between the sealed box 4 and the underground constant temperature tank 1. The acid-resistant pump 2 continues to suck the water in the sealed pump. When the pressure difference is large enough, the pickling solution in the underground constant temperature tank 1 enters the sealed box 4. The liquid level in the sealed box 4 tends to be stable, and the system reaches equilibrium. The acid-resistant pump 2 continues to work, and the water entering the system from the sealed box 4 does not affect the use.
[0020] The above is only the preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made according to the structure, features, and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.
Claims
1. An acid supply system for pickling equipment, comprising an underground thermostatic tank, an acid-resistant pump, and a pickling tank, wherein the underground thermostatic tank is arranged in an installation tank below the ground, the input end of the acid-resistant pump is connected to the underground thermostatic tank, and the output end of the acid-resistant pump is connected to the pickling tank arranged on the ground, characterized in that: The acid-resistant pump is arranged on the ground on one side of the pickling tank, a sealing box is connected to the pipeline connecting the acid-resistant pump and the underground constant temperature tank, the sealing box is arranged on the ground on one side of the acid-resistant pump, a first valve is arranged on the pipeline connecting the sealing box and the acid-resistant pump, the sealing box is connected to a water supply device, and a second valve is arranged on the pipeline connecting the sealing box and the water supply device.
2. The acid supply system for pickling equipment according to claim 1, characterized in that: The connection port between the sealed box and the underground thermostatic tank is arranged at the top of the sealed box.
3. The acid supply system for pickling equipment according to claim 1, characterized in that: A liquid level observation window is arranged on the side of the sealing box.
4. The acid supply system for pickling equipment according to claim 1, characterized in that: The water supply device includes a water tank, a water supply pump and a second valve. The water tank is connected to a sealed box. The water supply pump is arranged on the pipeline connecting the water tank and the sealed box. The second valve is arranged on the pipeline connecting the water supply pump and the sealed box.
5. The acid supply system for pickling equipment according to claim 4, characterized in that: A liquid level sensor is arranged in the sealing box, and the liquid level sensor is connected to the PLC controller. The first valve and the second valve are both arranged as electric valves, and the first valve, the second valve and the water supply pump are all connected to the PLC controller.