Double-layer pickling tank device

Abstract

The utility model belongs to the technical field of metal surface treatment equipment, and particularly relates to a double-layer pickling tank device which comprises a pickling tank main body, the double-layer pickling tank device adopts a double-layer design, a cleaning mechanism and a pickling mechanism are arranged in the pickling tank main body, and a circulating mechanism and a waste gas treatment device are arranged outside the pickling tank main body. According to the double-layer pickling tank device, the cleaning mechanism drives the screw rod by virtue of the motor, so that the scraping plate efficiently cleans the filter plate, metal scraps and impurities are prevented from blocking the filter holes, wastes are timely pushed to the collecting bin, the labor intensity of workers is greatly reduced, the cleaning efficiency is improved, and the stability of pickling operation is guaranteed. The circulation is the same as that of a waste gas treatment mechanism, a circulating pump realizes solution circulation, a concentration detector assists in maintaining the pickling effect, and the cost is reduced; the waste gas treatment mechanism effectively purifies waste gas through neutralization and adsorption, pollution is reduced, the workshop environment is improved, and personnel health and equipment safety are comprehensively guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of metal surface treatment equipment, specifically a double-layer pickling tank device. Background Technology

[0002] In the field of metal processing and manufacturing, metal surface treatment plays a crucial role in improving the performance, extending the service life, and enhancing the aesthetics of metal products. Pickling, as a key step in metal surface treatment, aims to remove impurities such as oxide scale, rust, and oil from metal surfaces, providing favorable surface conditions for subsequent processing steps such as electroplating, coating, and heat treatment. With the booming development of the metal processing industry, higher demands are being placed on the efficiency, quality, and environmental friendliness of pickling processes.

[0003] Traditional pickling tanks have revealed numerous problems in practical applications. Firstly, they suffer from significant deficiencies in cleaning. During the pickling process, metal debris and impurities easily accumulate inside the tank, especially on the filter components. If not cleaned promptly, these debris and impurities will clog the filter pores, severely affecting the circulation of the pickling solution and preventing the solution from uniformly contacting the metal workpiece, thus reducing pickling efficiency and quality. Furthermore, manual cleaning is not only labor-intensive but also prone to interrupting pickling operations due to delayed cleaning, affecting the continuity of production.

[0004] Secondly, the management of pickling solutions is not scientific enough. Existing pickling tanks cannot monitor changes in solution concentration in real time. When the solution concentration is too low, effective pickling cannot be guaranteed; while too high a concentration may lead to resource waste and over-pickling, damaging metal workpieces. In addition, the lack of a sound solution circulation and recycling system keeps pickling costs high.

[0005] Furthermore, the issue of waste gas treatment is prominent. The pickling process generates a large amount of waste gas containing acidic gases, such as hydrochloric acid mist and sulfuric acid mist. If these waste gases are discharged directly without effective treatment, they will not only cause serious pollution to the workshop environment and harm the health of operators, but may also corrode equipment and facilities in the workshop, shorten the service life of equipment, and increase the maintenance costs of enterprises. Therefore, it is urgent to improve a double-layer pickling tank device to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a double-layer pickling tank device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a double-layer pickling tank device, comprising a pickling tank body, a sealing cover movably installed on the top of the pickling tank body, a waste gas treatment device fixedly installed on the sealing cover, a liquid storage tank fixedly installed on the side of the pickling tank body, a pickling device provided inside the pickling tank body, and a cleaning device provided below the pickling device; the double-layer pickling tank device includes a cleaning mechanism, a pickling mechanism, a circulation mechanism, and a waste gas treatment mechanism, the cleaning mechanism including the pickling tank body, a motor fixedly installed on the right side of the pickling tank body, a screw fixedly installed through the output shaft of the motor passing through the pickling tank body, and a scraper movably installed on the screw via threads.

[0008] Preferably, the pickling tank body has an inner pickling tank. The double-layer pickling tank device is a double-layer design, with a partition layer one and a partition layer two between the tanks. The inner pickling tank is made of a material with excellent corrosion resistance, such as polytetrafluoroethylene or fiberglass. It is used to hold the pickling solution and place the metal workpieces to be treated, and directly participates in the pickling reaction. The outer tank is made of a material with certain strength and corrosion resistance, such as carbon steel with an anti-corrosion coating. The interlayer is filled with heat insulation material, such as rock wool or polyurethane foam, to reduce heat loss from the inner tank, maintain the temperature stability of the pickling solution, and reduce energy consumption.

[0009] Preferably, a filter plate is fixedly installed inside the inner pickling tank, the filter plate is provided with multiple sets of filter holes, and waste outlets are provided at both ends of the inner pickling tank.

[0010] Preferably, a fixing rod is fixedly installed inside the first partition, a baffle is movably installed on the fixing rod, a sealing block with the same shape as the waste outlet is provided at the front end of the baffle, a spring is fixedly installed between the baffle and the outer groove, a waste collection bin is movably installed inside the first partition, and a handle is fixedly installed at the front end of the waste collection bin.

[0011] Preferably, the pickling mechanism includes a pickling tank body, an air pump is fixedly installed on the back of the pickling tank body, a folded bend is fixedly installed at the air outlet of the air pump, the folded bend passes through the pickling tank body and is fixedly installed in the inner pickling tank, two sets of support rods are fixedly installed in the inner pickling tank, the folded bend is fixedly installed on the support rods, the folded bend is provided with multiple sets of air outlets, and ultrasonic transducers are fixedly installed on both sides of the inner pickling tank.

[0012] Preferably, the circulation mechanism includes a pickling tank body, a circulation pump is fixedly installed on the right side of the pickling tank body, an outlet pipe is fixedly installed at the outlet of the circulation pump, the end of the outlet pipe passes through the top of the pickling tank body where a folded bend is provided, a delivery pipe is fixedly installed at the outlet of the circulation pump, the end of the delivery pipe passes through a storage tank, a concentration detector is provided in the storage tank, an injection port is provided on the storage tank, and a suction pipe is fixedly installed at the outlet of the storage tank, the suction pipe passes through the pickling tank body and is located below the inner pickling tank.

[0013] Preferably, the waste gas treatment mechanism includes a sealing cover, on which a second air pump is fixedly installed. An air extraction pipe is fixedly installed at the air extraction port of the second air pump. The air extraction pipe passes through the sealing cover and is located above the inner pickling tank. An air outlet pipe is fixedly installed at the air outlet of the second air pump. The air outlet pipe is fixedly installed on the treatment box. A partition is fixedly installed inside the treatment box. A treatment chamber is provided below the partition. An alkaline solution is placed in the treatment chamber. Activated carbon and other adsorption materials are placed above the partition. An exhaust port is provided at the top of the treatment box.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This double-layer pickling tank device, through its cleaning mechanism design, utilizes a motor-driven screw rotation to allow a scraper to move along the screw within the pickling tank body, cleaning the filter plates. This prevents metal debris or impurities from clogging the filter holes during the pickling process, thus avoiding impacts on subsequent recycling and preventing their accumulation from affecting the pickling effect. The reciprocating motion of the scraper promptly pushes waste material to the waste outlet. Combined with the waste collection bin within the first layer, this facilitates centralized collection and cleaning of waste. Furthermore, the cleaning mechanism is simple and efficient to operate, reducing the labor intensity of manual cleaning, improving the cleaning efficiency and work continuity of the pickling tank, and ensuring the stable operation of the pickling process.

[0016] 2. This double-layer pickling tank device, through the design of a circulation mechanism and an exhaust gas treatment mechanism, utilizes a circulation pump to extract the solution from the pickling tank, and circulates the solution between the pickling tank and the storage tank through outlet and delivery pipes. A concentration detector in the storage tank can monitor the solution concentration in real time, facilitating timely replenishment or adjustment to ensure stable pickling results, while also enabling solution recycling and reducing costs. In the exhaust gas treatment mechanism, a second air pump extracts the exhaust gas generated during pickling through an extraction pipe and sends it to the treatment tank. The exhaust gas first neutralizes the acidic components with an alkaline solution, then further purifies it through adsorption materials such as activated carbon above, and finally discharges from the exhaust port, effectively reducing exhaust gas pollution, improving the workshop environment, and ensuring personnel health and equipment safety. Attached Figure Description

[0017] Figure 1This is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 This is a half-sectional schematic diagram of the cleaning mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the pickling mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the installation structure of the circulation mechanism of this utility model;

[0022] Figure 6 This is a schematic diagram of the waste gas treatment mechanism of this utility model.

[0023] In the diagram: 1. Pickling tank body, 2. Sealing cover, 3. Waste gas treatment device, 4. Liquid storage tank, 5. Pickling device, 6. Cleaning device, 201. Motor, 202. Screw, 203. Inner pickling tank, 204. Scraper, 205. Filter plate, 206. Filter hole, 207. Partition 1, 208. Waste outlet, 209. Baffle, 210. Fixing rod, 211. Spring, 212. Waste collection bin, 213. Handle, 214. Partition 2, 301. Air pump 1, 302. Folded bend, 303. Air outlet, 304. Support rod, 305. Ultrasonic transducer, 401. Circulation pump, 402. Liquid outlet pipe, 403. Liquid delivery pipe, 404. Liquid injection port, 405. Liquid extraction pipe, 501. Air pump 2, 502. Air extraction pipe, 503. Air outlet pipe, 504. Processing box, 505. Processing bin, 506. Partition, 507. Exhaust port. Detailed Implementation

[0024] 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.

[0025] Example 1:

[0026] Based on existing technology, in practical applications of traditional pickling tanks, metal debris and impurities easily accumulate inside the tank during the pickling process, especially on the filter components. If not cleaned in time, these debris and impurities will clog the filter pores, severely affecting the circulation of the pickling solution and preventing the solution from contacting the metal workpiece evenly, thus reducing pickling efficiency and quality. Furthermore, manual cleaning is not only labor-intensive but also prone to interrupting pickling operations due to untimely cleaning, affecting production continuity. Therefore, this device is equipped with a cleaning mechanism; please refer to [link / reference]. Figures 1-3 This utility model provides a technical solution: a double-layer pickling tank device, including a pickling tank body 1, a sealing cover 2 movably installed on the top of the pickling tank body 1, a waste gas treatment device 3 fixedly installed on the sealing cover 2, a liquid storage tank 4 fixedly installed on the side of the pickling tank body 1, a pickling device 5 provided inside the pickling tank body 1, and a cleaning device 6 provided below the pickling device 5; the double-layer pickling tank device includes a cleaning mechanism, a pickling mechanism, a circulation mechanism and a waste gas treatment mechanism, the cleaning mechanism includes the pickling tank body 1, a motor 201 fixedly installed on the right side of the pickling tank body 1, a screw 202 fixedly installed through the output shaft of the motor 201 passing through the pickling tank body 1, and a scraper 204 movably installed on the screw 202 through threads.

[0027] The pickling tank body 1 is equipped with an inner pickling tank 203. The double-layer pickling tank device is a double-layer design, with partition 1 207 and partition 214 between the tanks. The inner pickling tank 203 is made of a material with excellent corrosion resistance, such as polytetrafluoroethylene or fiberglass. It is used to hold the pickling solution and place the metal workpieces to be treated, and directly participates in the pickling reaction. The outer tank is made of a material with certain strength and corrosion resistance, such as carbon steel with an anti-corrosion coating.

[0028] A filter plate 205 is fixedly installed inside the inner pickling tank 203. The filter plate 205 has multiple sets of filter holes 206. Waste outlets 208 are provided at both ends of the inner pickling tank 203.

[0029] A fixing rod 210 is fixedly installed inside the first partition 207. A baffle 209 is movably installed on the fixing rod 210. The front end of the baffle 209 is provided with a sealing block that is consistent with the shape of the waste outlet 208. A spring 211 is fixedly installed between the baffle 209 and the outer groove. A waste collection bin 212 is movably installed inside the first partition 207. A handle 213 is fixedly installed at the front end of the waste collection bin 212.

[0030] The pickling mechanism includes a pickling tank body 1. An air pump 301 is fixedly installed on the back of the pickling tank body 1. A folded bend 302 is fixedly installed at the air outlet of the air pump 301. The folded bend 302 passes through the pickling tank body 1 and is fixedly installed in the inner pickling tank 203. Two sets of support rods 304 are fixedly installed in the inner pickling tank 203. The folded bend 302 is fixedly installed on the support rods 304. Multiple air outlets 303 are provided on the folded bend 302. Ultrasonic transducers 305 are fixedly installed on both sides of the inner pickling tank 203.

[0031] Open the sealing cover 2, place the metal to be pickled on the folded tube 302, close the sealing cover 2, start the air pump 301 and ultrasonic transducer 305 to pickle the metal placed on the folded tube 302. The pickling process is accelerated by ultrasonic waves and by injecting gas into the pickling solution. At the same time, start the motor 201, which drives the screw 202 to rotate and drive the scraper 204 to move on the filter plate 205 to clean it. When the scraper 204 moves to the waste outlet 208, it pushes open the baffle 209, allowing the impurities under the scraper 204 to be discharged and fall into the waste collection bin 212. Then the motor 201 reverses, and this process is repeated to prevent the filter hole 206 from becoming clogged.

[0032] Example 2:

[0033] Building upon Example 1, existing pickling tanks struggle to monitor solution concentration changes in real time. When the solution concentration is too low, effective pickling cannot be guaranteed; conversely, excessively high concentrations can lead to resource waste and over-pickling, damaging metal workpieces. Furthermore, the lack of a robust solution circulation and recycling system keeps pickling costs high. Simultaneously, the pickling process generates large quantities of waste gases containing acidic gases, such as hydrochloric acid mist and sulfuric acid mist. Direct emission of these waste gases without effective treatment not only severely pollutes the workshop environment and harms the health of operators but also corrodes equipment and facilities, shortening equipment lifespan and increasing maintenance costs. Therefore, this device also includes a circulation mechanism and a waste gas treatment mechanism. Please refer to [link / reference]. Figures 4-6 This utility model provides a technical solution: a double-layer pickling tank device, the circulation mechanism including a pickling tank body 1, a circulation pump 401 fixedly installed on the right side of the pickling tank body 1, an outlet pipe 402 fixedly installed at the outlet of the circulation pump 401, the end of the outlet pipe 402 passing through the top of the pickling tank body 1 which is provided with a folded bend pipe 302, a delivery pipe 403 fixedly installed at the outlet of the circulation pump 401, the end of the delivery pipe 403 passing through a storage tank 4, a concentration detector is provided in the storage tank 4, an injection port 404 is provided on the storage tank 4, and a suction pipe 405 is fixedly installed at the outlet of the storage tank 4, the suction pipe 405 passing through the pickling tank body 1 and located below the inner pickling tank 203.

[0034] The waste gas treatment mechanism includes a sealing cover 2, on which a second air pump 501 is fixedly installed. An air extraction pipe 502 is fixedly installed at the air extraction port of the second air pump 501. The air extraction pipe 502 passes through the sealing cover 2 and is located above the inner pickling tank 203. An air outlet pipe 503 is fixedly installed at the air outlet of the second air pump 501. The air outlet pipe 503 is fixedly installed on the treatment box 504. A partition 506 is fixedly installed inside the treatment box 504. A treatment chamber 505 is located below the partition 506. An alkaline solution is placed inside the treatment chamber 505. Activated carbon and other adsorption materials are placed above the partition 506. An exhaust port 507 is located above the treatment box 504.

[0035] The circulating pump 401 is started to draw the pickling solution after the reaction through the extraction pipe 405 and let it enter the storage tank 4. The concentration detector is designed in the storage tank 4, and the pickling solution is injected into the storage tank 4 through the injection port 404 to adjust the concentration. The second air pump 501 is started, and the waste gas generated during the pickling process is transported to the treatment tank 504 through the action of the extraction pipe 502 and the outlet pipe 503. The acidic waste gas is neutralized by the alkaline solution placed in the treatment tank 505. The treated waste gas is further treated by the activated carbon placed on the partition 506 to make it meet the emission standards.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A double-layer pickling tank apparatus, comprising a pickling tank body (1), characterized in that: A sealing cover (2) is movably installed on the top of the pickling tank body (1), and a waste gas treatment device (3) is fixedly installed on the sealing cover (2). A liquid storage tank (4) is fixedly installed on the side of the pickling tank body (1). A pickling device (5) is provided inside the pickling tank body (1), and a cleaning device (6) is provided below the pickling device (5). The double-layer pickling tank device includes a cleaning mechanism, a pickling mechanism, a circulation mechanism, and a waste gas treatment mechanism. The cleaning mechanism includes a pickling tank body (1). A motor (201) is fixedly installed on the right side of the pickling tank body (1). The output shaft of the motor (201) passes through the pickling tank body (1) and a screw (202) is fixedly installed thereon. A scraper (204) is movably installed on the screw (202) through a thread.

2. The double-layer pickling tank apparatus according to claim 1, characterized in that: The pickling tank body (1) is provided with an inner pickling tank (203). The double-layer pickling tank device is a double-layer design, with a partition layer one (207) and a partition layer two (214) between the tanks. The inner pickling tank (203) is made of a material with excellent corrosion resistance, such as polytetrafluoroethylene or fiberglass, and the outer tank is made of a corrosion-resistant material, such as carbon steel with an anti-corrosion coating.

3. The double-layer pickling tank apparatus according to claim 2, characterized in that: A filter plate (205) is fixedly installed inside the inner pickling tank (203). The filter plate (205) is provided with multiple sets of filter holes (206). Waste outlets (208) are provided at both ends of the inner pickling tank (203).

4. The double-layer pickling tank apparatus according to claim 3, characterized in that: A fixing rod (210) is fixedly installed inside the first partition (207). A baffle (209) is movably installed on the fixing rod (210). The front end of the baffle (209) is provided with a sealing block that is consistent with the shape of the waste outlet (208). A spring (211) is fixedly installed between the baffle (209) and the outer groove. A waste collection bin (212) is movably installed inside the first partition (207). A handle (213) is fixedly installed at the front end of the waste collection bin (212).

5. The double-layer pickling tank apparatus according to claim 4, characterized in that: The pickling mechanism includes a pickling tank body (1), an air pump (301) is fixedly installed on the back of the pickling tank body (1), a folded bend (302) is fixedly installed at the air outlet of the air pump (301), the folded bend (302) passes through the pickling tank body (1) and is fixedly installed in the inner pickling tank (203), two sets of support rods (304) are fixedly installed in the inner pickling tank (203), the folded bend (302) is fixedly installed on the support rods (304), the folded bend (302) is provided with multiple sets of air outlets (303), and ultrasonic transducers (305) are fixedly installed on both sides of the inner pickling tank (203).

6. The double-layer pickling tank apparatus according to claim 5, characterized in that: The circulation mechanism includes a pickling tank body (1), a circulation pump (401) is fixedly installed on the right side of the pickling tank body (1), an outlet pipe (402) is fixedly installed at the outlet of the circulation pump (401), the end of the outlet pipe (402) passes through the top of the pickling tank body (1) which is provided with a folded bend pipe (302), an infusion pipe (403) is fixedly installed at the outlet of the circulation pump (401), the end of the infusion pipe (403) passes through a storage tank (4), a concentration detector is provided in the storage tank (4), an injection port (404) is provided on the storage tank (4), and a suction pipe (405) is fixedly installed at the outlet of the storage tank (4), the suction pipe (405) passes through the pickling tank body (1) and is located below the inner pickling tank (203).

7. The double-layer pickling tank apparatus according to claim 6, characterized in that: The waste gas treatment mechanism includes a sealing cover (2), on which a second air pump (501) is fixedly installed. An air extraction pipe (502) is fixedly installed at the air extraction port of the second air pump (501). The air extraction pipe (502) passes through the sealing cover (2) and is located above the inner pickling tank (203). An air outlet pipe (503) is fixedly installed at the air outlet of the second air pump (501). The air outlet pipe (503) is fixedly installed on the treatment box (504). A partition (506) is fixedly installed inside the treatment box (504). A treatment chamber (505) is provided below the partition (506). An alkaline solution is placed inside the treatment chamber (505). Activated carbon is placed above the partition (506). An exhaust port (507) is provided above the treatment box (504).

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