Steel pipe pickling equipment capable of recycling acid liquid

Abstract

The utility model provides a kind of steel pipe pickling equipment of recyclable acid liquor, it is related to steel pipe pickling field.The steel pipe pickling equipment of recyclable acid liquor, including pickling tank and seal cover, the middle part of the seal cover is provided with two groups of fixed mechanism, the fixed mechanism includes fixed ring and fixed sleeve, the bottom of the pickling tank is provided with pickling mechanism, and the pickling mechanism includes acid liquor purification tank, delivery pipe, solenoid valve and circulation pipe.The steel pipe pickling equipment of recyclable acid liquor, by fixed ring, it is convenient to hoist and enter the inside of pickling tank with steel pipe, improve steel pipe hoisting and pickling efficiency, by acid liquor purification tank and delivery pipe, the acid liquor in the inside of acid liquor purification tank is sent into the inside of pickling tank, and steel pipe is pickled, by circulation pipe, the excess acid liquor in the inside of pickling tank is backflowed into the inside of acid liquor purification tank, by the circulation filtration to acid liquor, improve the purity degree of acid liquor, improve the pickling effect of acid liquor to steel pipe.

Description

Technical Field

[0001] This utility model relates to a steel pipe pickling equipment, specifically a steel pipe pickling equipment that can recycle acid solution, belonging to the field of steel pipe pickling technology. Background Technology

[0002] Pickling is a method of removing scale and rust from the surface of steel using acid solutions. It is a way to clean metal surfaces. The pickling solution in the pickling process is generally a mixture of various acids. Existing galvanized steel pipes can be pickled by pickling equipment to make the surface of the steel pipe smooth, clean and uniform, and to form a phosphate film, thereby improving the corrosion resistance and appearance quality of the steel pipe.

[0003] Utility model patent CN214361716U discloses a seamless steel pipe pickling equipment, including a pickling tank, a hoisting device, and a top cover. The pickling tank is open, and the top cover is installed at the opening of the pickling tank. The hoisting device drives the top cover to rise and fall. The support assembly of this utility model places the steel pipes sequentially, preventing a large number of steel pipes from piling up and improving the pickling effect. The top cover and side baffles can reduce the diffusion of acid mist during the pickling process, improving the environmental performance of the pickling equipment.

[0004] During steel pipe production, the steel pipes need to be pickled. Although the pickling equipment in the aforementioned patent avoids the diffusion of acid mist to the outside, the acid solution is easily contaminated with impurities and dirt residue after repeated use, affecting the purity of the acid solution. Turbid acid solution can reduce the pickling effect of steel pipes. Therefore, we provide a steel pipe pickling equipment that can recycle acid solution to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a steel pipe pickling device that can recycle acid solution in order to solve the above-mentioned problems, thereby addressing the issue of impurities remaining in the acid solution described in the prior art.

[0006] This utility model is achieved through the following technical solution: a steel pipe pickling equipment that can recycle acid solution.

[0007] The device includes an acid pickling tank and a sealing cover. The sealing cover has two sets of fixing mechanisms in the middle, each of which includes a fixing ring and a fixing sleeve. The bottom of the acid pickling tank is equipped with an acid pickling mechanism, which includes an acid purification tank, a delivery pipe, a water outlet pipe, and a circulation pipe. Both ends of the delivery pipe, the water outlet pipe, and the circulation pipe are fixedly connected to the acid pickling tank and the acid purification tank, respectively.

[0008] Preferably, a condenser is fixedly connected to the surface of the sealing cover, and both ends of the condenser are fixedly connected to the sealing cover. The sealing cover is fitted onto the top of the pickling tank.

[0009] Preferably, the fixing sleeve is fixedly connected to the sealing cover, and the fixing ring is slidably connected to the fixing sleeve. A locking rod is slidably connected inside the fixing sleeve, and the locking rod is inserted into the fixing ring.

[0010] Preferably, one end of the lever is fixedly connected to a pull plate, the surface of the pull plate is fixedly connected to a telescopic spring and a first protective cover, and the other end of the telescopic spring and the first protective cover are both fixedly connected to a fixed sleeve.

[0011] Preferably, an electromagnet is fixedly connected to the surface of the fixing sleeve, and the electromagnet is magnetically attracted to the other end of the clamp rod. A second protective cover is fixedly connected to the surface of the fixing sleeve to protect the electromagnet.

[0012] Preferably, a coarse filter screen is slidably connected to the bottom of the pickling tank, a spray head is fixedly connected to the surface of the pickling tank, and the spray head is fixedly connected to the top of the delivery pipe. An acid-resistant pump for controlling the delivery pipe is installed on the surface of the acid purification tank.

[0013] Preferably, a solenoid valve is fixedly connected to the bottom of the outlet pipe, an inlet pipe is fixedly connected to the top of the acid purification tank, a drain pipe is fixedly connected to the bottom of the acid purification tank, and a liquid level probe is fixedly connected inside the acid purification tank.

[0014] Preferably, a support frame is fixedly connected inside the acid purification box, a filter basket is slidably connected to the surface of the support frame, and a sealing ring is fixedly connected to the surface of the filter basket, and the sealing ring is compatible with the acid purification box.

[0015] This invention provides a steel pipe pickling device that can recycle acid solution, which has the following beneficial effects:

[0016] 1. This steel pipe pickling equipment with recyclable acid solution uses a fixed sleeve to fix a fixed ring and a sealing cover together. The fixed ring secures a stack of steel pipes, facilitating the hoisting of the steel pipes into the pickling tank when the sealing cover is lifted by external equipment, thus improving the efficiency of steel pipe hoisting and pickling. The acid solution in the acid purification tank is transported into the pickling tank through the acid purification tank and the delivery pipe to pickle the steel pipes. Excess acid solution in the pickling tank is returned to the acid purification tank through the circulation pipe. After pickling, the acid solution in the pickling tank is discharged into the acid purification tank through the outlet pipe. By circulating and filtering the acid solution, the purity of the acid solution is improved, thus enhancing the pickling effect of the steel pipes.

[0017] 2. This recyclable acid pickling equipment for steel pipes uses a condenser to condense the acid mist inside the pickling tank and then transports the condensed acid back into the tank, improving the efficiency of acid recycling. A clamping rod secures the fixing ring to the fixing sleeve, facilitating pipe replacement by changing the fixing ring. A telescopic spring provides thrust to the pulling plate, moving the clamping rod away from the fixing ring. A first protective cover protects the telescopic spring from acid corrosion, improving its operational stability. An electromagnet attracts the clamping rod, and a second protective cover protects the electromagnet from acid corrosion, further improving its operational stability.

[0018] 3. This recyclable acid-washing steel pipe equipment uses a coarse filter to remove large particles and iron filings from the pickling tank. The coarse filter is easily cleaned after each batch of steel pipes has been pickled. An acid-resistant pump extracts acid from the purification tank, improving the convenience of acid circulation. A solenoid valve controls the opening and closing of the outlet pipe, while an inlet pipe allows for easy addition of acid to the purification tank. A drain pipe facilitates the discharge of spent acid. A level probe monitors the acid level and alerts staff to replenish acid when it is low. A support frame positions the filter basket, which filters impurities and sludge from the acid. A sliding connection facilitates easy cleaning and replacement of the filter basket. A sealing ring seals the connection between the filter basket and the purification tank, preventing acid leakage and improving the tank's operational airtightness. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the pickling tank and acid purification tank of this utility model;

[0021] Figure 3 This is a schematic diagram of the fixing mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the filter basket structure of this utility model.

[0023] [Explanation of Key Component Symbols]

[0024] 1. Pickling tank; 2. Sealing cover; 3. Condenser;

[0025] 4. Fixing mechanism; 401. Fixing ring; 402. Fixing sleeve; 403. Clamping rod; 404. Pulling plate; 405. Telescopic spring; 406. First protective cover; 407. Electromagnet; 408. Second protective cover;

[0026] 5. Pickling mechanism; 501. Acid purification tank; 502. Delivery pipe; 503. Acid-resistant pump; 504. Spray head; 505. Water outlet pipe; 506. Solenoid valve; 507. Circulation pipe; 508. Filter basket; 509. Support frame; 510. Sealing ring; 511. Liquid level probe; 512. Liquid inlet pipe; 513. Sewage discharge pipe; 514. Coarse filter screen. Detailed Implementation

[0027] This utility model provides a steel pipe pickling equipment that can recycle acid solution.

[0028] Please see Figure 1 and Figure 2 The device includes a pickling tank 1 and a sealing cover 2. A condenser 3 is fixedly connected to the surface of the sealing cover 2, and both ends of the condenser 3 are fixedly connected to the sealing cover 2. The condenser 3 is the same as the device in the prior art. The sealing cover 2 is fitted on the top of the pickling tank 1. The condenser 3 condenses the acid mist inside the pickling tank 1 and transports the condensed acid liquid into the pickling tank 1, thereby improving the acid liquid recycling efficiency.

[0029] Please see Figure 1 , Figure 2 and Figure 3 Two sets of fixing mechanisms 4 are provided in the middle of the sealing cover 2. The fixing mechanism 4 includes a fixing ring 401 and a fixing sleeve 402. The fixing ring 401 is fixed to the sealing cover 2 through the fixing sleeve 402. A pile of steel pipes is fixed through the fixing ring 401. When the external equipment lifts the sealing cover 2, it is convenient to lift the steel pipes into the pickling tank 1, thereby improving the efficiency of steel pipe lifting and pickling.

[0030] The fixed sleeve 402 is fixedly connected to the sealing cover 2, and the fixed ring 401 is slidably connected to the fixed sleeve 402. The fixed sleeve 402 is slidably connected to the locking rod 403, and the locking rod 403 is inserted into the fixed ring 401. The locking rod 403 fixes the fixed ring 401 and the fixed sleeve 402 together, making it convenient to replace the steel pipe by replacing the fixed ring 401.

[0031] One end of the lever 403 is fixedly connected to a pull plate 404. A telescopic spring 405 and a first protective cover 406 are fixedly connected to the surface of the pull plate 404. The other ends of the telescopic spring 405 and the first protective cover 406 are fixedly connected to the fixed sleeve 402. The telescopic spring 405 provides a pushing force to the pull plate 404, causing the lever 403 to move away from the fixed ring 401. The first protective cover 406 provides protection for the telescopic spring 405, preventing acid from corroding the telescopic spring 405 and improving the stability of the telescopic spring 405 during operation.

[0032] An electromagnet 407 is fixedly connected to the surface of the fixed sleeve 402. The electromagnet 407 is existing technology, and its detailed parameters and model will not be described in detail in this application. The electromagnet 407 is magnetically attracted to the other end of the clamp 403. The clamp 403 is made of iron. A second protective cover 408 is fixedly connected to the surface of the fixed sleeve 402 to protect the electromagnet 407. The electromagnet 407 attracts the clamp 403, and the second protective cover 408 protects the electromagnet 407, preventing acid corrosion of the electromagnet 407 and improving the stability of the operation of the electromagnet 407.

[0033] Please see Figure 1 , Figure 2 and Figure 4 The bottom of the pickling tank 1 is equipped with a pickling mechanism 5, which includes an acid purification tank 501, a conveying pipe 502, a water outlet pipe 505, and a circulation pipe 507. Both ends of the conveying pipe 502, the water outlet pipe 505, and the circulation pipe 507 are fixedly connected to the pickling tank 1 and the acid purification tank 501, respectively. The acid inside the acid purification tank 501 is conveyed into the pickling tank 1 through the acid purification tank 501 and the conveying pipe 502 to pickle the steel pipe. The excess acid inside the pickling tank 1 is returned to the acid purification tank 501 through the circulation pipe 507. After pickling is completed, the acid inside the pickling tank 1 is conveniently discharged into the acid purification tank 501 through the water outlet pipe 505.

[0034] A coarse filter screen 514 is slidably connected to the bottom of the pickling tank 1. A spray head 504 is fixedly connected to the surface of the pickling tank 1, and the spray head 504 is fixedly connected to the top of the conveying pipe 502. An acid-resistant pump 503 controlling the conveying pipe 502 is installed on the surface of the acid purification tank 501. Large particulate impurities and iron filings inside the pickling tank 1 are filtered through the coarse filter screen 514. After a batch of steel pipes is pickled, it is convenient to clean the coarse filter screen 514. The acid solution inside the acid purification tank 501 is drawn through the acid-resistant pump 503 and sprayed into the pickling tank 1 through the spray head 504, improving the convenience of acid solution circulation.

[0035] The acid-resistant pump 503 is a prior art technology, and its detailed parameters and models will not be described in detail in this application.

[0036] A solenoid valve 506 is fixedly connected to the bottom of the water outlet pipe 505. The solenoid valve 506 is existing technology, and its detailed parameters and model will not be described in detail in this application. An inlet pipe 512 is fixedly connected to the top of the acid purification tank 501, and a drain pipe 513 is fixedly connected to the bottom of the acid purification tank 501. A liquid level probe 511 is fixedly connected inside the acid purification tank 501. The solenoid valve 506 controls the start or stop of the water outlet pipe 505. The inlet pipe 512 facilitates the addition of acid to the inside of the acid purification tank 501, and the drain pipe 513 facilitates the discharge of expired acid. The liquid level probe 511 can detect the acid level inside the acid purification tank 501 and prompt the staff to replenish the acid when the acid level is too low.

[0037] An internal support frame 509 is fixedly connected to the acid purification tank 501. A filter basket 508 is slidably connected to the surface of the support frame 509. A sealing ring 510 is fixedly connected to the surface of the filter basket 508, and the sealing ring 510 is compatible with the acid purification tank 501. The support frame 509 positions the filter basket 508, which filters impurities and sludge in the acid. The sliding connection facilitates timely cleaning and replacement of the filter basket 508. The sealing ring 510 seals the connection between the filter basket 508 and the acid purification tank 501, preventing acid from seeping out of the acid purification tank 501 and improving the sealing performance of the acid purification tank 501.

[0038] Both the coarse filter screen 514 and the filter basket 508 are made of acid-resistant materials such as glass fiber, polyethylene, or ceramic fiber.

[0039] Working principle: First, steel pipes are piled up inside the fixing ring 401. By moving the sealing cover 2, the fixing sleeve 402 is fitted onto the top of the fixing ring 401. The electromagnet 407 pulls the clamping rod 403, and the clamping rod 403 fixes the fixing ring 401 and the fixing sleeve 402 together. Excess acid in the pickling tank 1 is returned to the acid purification tank 501 through the circulation pipe 507 and transported to the filter basket 508. Impurities and mud in the acid are filtered through the filter basket 508. The acid in the acid purification tank 501 is then pumped by the acid-resistant pump 503. The acid is extracted and sprayed into the pickling tank 1 through the spray head 504. By making the acid flow inside the pickling tank 1, the steel pipe is washed, improving the pickling effect. After the steel pipe pickling is completed, the water outlet pipe 505 is started by the solenoid valve 506. The acid is discharged from the pickling tank 1 into the acid purification tank 501 through the water outlet pipe 505, and then passes through the coarse filter screen 514 to filter out large particles and iron filings inside the pickling tank 1. Through the above devices, the acid is filtered and purified, improving the purity of the acid and the pickling effect of the steel pipe.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A steel pipe pickling plant capable of recycling acid solution, comprising a pickling tank (1) and a sealing cover (2), characterized in that: Two sets of fixing mechanisms (4) are provided in the middle of the sealing cover (2). The fixing mechanism (4) includes a fixing ring (401) and a fixing sleeve (402). The bottom of the pickling tank (1) is provided with a pickling mechanism (5). The pickling mechanism (5) includes an acid purification tank (501), a conveying pipe (502), a water outlet pipe (505), and a circulation pipe (507). The two ends of the conveying pipe (502), the water outlet pipe (505), and the circulation pipe (507) are respectively fixedly connected to the pickling tank (1) and the acid purification tank (501).

2. The steel pipe pickling apparatus capable of recycling acid liquid according to claim 1, characterized in that: The surface of the sealing cover (2) is fixedly connected to the condenser (3), and both ends of the condenser (3) are fixedly connected to the sealing cover (2). The sealing cover (2) is fitted on the top of the pickling tank (1).

3. The steel pipe pickling apparatus capable of recycling acid liquid according to claim 1, characterized in that: The fixed sleeve (402) is fixedly connected to the sealing cover (2), and the fixed ring (401) is slidably connected to the fixed sleeve (402). The fixed sleeve (402) is slidably connected to the inside of the fixed sleeve (402), and the fixed ring (403) is inserted into the fixed ring (401).

4. The steel pipe pickling apparatus capable of recycling acid liquid according to claim 3, characterized in that: One end of the lever (403) is fixedly connected to a pull plate (404), and a telescopic spring (405) and a first protective cover (406) are fixedly connected to the surface of the pull plate (404). The other ends of the telescopic spring (405) and the first protective cover (406) are both fixedly connected to the fixed sleeve (402).

5. The steel pipe pickling apparatus capable of recycling acid liquid according to claim 1, characterized in that: An electromagnet (407) is fixedly connected to the surface of the fixed sleeve (402), and the electromagnet (407) is magnetically attracted to the other end of the lever (403). A second protective cover (408) is fixedly connected to the surface of the fixed sleeve (402) to protect the electromagnet (407).

6. The steel pipe pickling apparatus capable of recycling an acid solution according to claim 1, characterized by: The bottom of the pickling tank (1) is slidably connected to a coarse filter screen (514), the surface of the pickling tank (1) is fixedly connected to a spray head (504), and the spray head (504) is fixedly connected to the top of the delivery pipe (502). The surface of the acid purification tank (501) is equipped with an acid-resistant pump (503) that controls the delivery pipe (502).

7. The steel pipe pickling apparatus capable of recycling acid liquid according to claim 1, characterized in that: The bottom of the water outlet pipe (505) is fixedly connected to a solenoid valve (506), the top of the acid purification tank (501) is fixedly connected to an inlet pipe (512), the bottom of the acid purification tank (501) is fixedly connected to a drain pipe (513), and a liquid level probe (511) is fixedly connected inside the acid purification tank (501).

8. The steel pipe pickling apparatus capable of recycling acid liquid according to claim 1, characterized in that: The acid purification box (501) is internally fixedly connected to a support frame (509), and a filter basket (508) is slidably connected to the surface of the support frame (509). A sealing ring (510) is fixedly connected to the surface of the filter basket (508), and the sealing ring (510) is compatible with the acid purification box (501).

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