Automatic scale cleaning device in quenching tank

Abstract

The utility model discloses a kind of automatic cleaning devices of oxide scale in quenching pool, solve the problem such as the cooling efficiency decline caused by traditional quenching pool bottom iron oxide scale residue deposition, cleaning difficulty.It is characterized by: in one side wall in pool body, oxide scale automatic cleaning device is by high-pressure air pipe (1), porous residue suction head (2), exhaust duct (3), impurity collector connecting pipe (4), high-pressure air injection pipe (5), high-pressure air branch pipe and exhaust valve (7) and intelligent control module composition.High-pressure air is connected to quenching pool bottom by special pipeline, high-speed airflow is generated in specific outlet area, and the density difference generated by up and down drives the precipitated iron oxide scale residue to be discharged to external collection device along airflow through pipeline.The device can be started regularly or as needed, realize the automation of deslagging process, high efficiency, avoid the security risk of manual cleaning in pool, and help to maintain the cleanliness of cooling liquid and quenching quality stability.

Description

Technical Field

[0001] This utility model belongs to the technical field of industrial heat treatment equipment, specifically relating to maintenance and cleaning equipment for quenching tanks, and particularly a device that uses high-pressure air to generate a density difference and efficiently discharges deposited iron oxide scale and other residues through pipelines. Background Technology

[0002] During the quenching process of steel pipes, a large amount of iron oxide scale peels off the surface. These impurities precipitate in the quenching liquid and gradually accumulate at the bottom of the tank. The accumulation of residue at the bottom of the tank causes multiple problems: first, it reduces the circulation efficiency of the coolant, affecting the uniformity of cooling of the steel pipe, which may lead to uneven hardness and deformation; second, the impurities may re-adhere to the steel pipe at high temperatures, affecting surface quality; and third, it requires periodic shutdowns for manual cleaning, which is labor-intensive, inefficient, and poses safety hazards. Although there are currently filtration and circulation systems, it is difficult to clean the sediment tightly attached to the bottom of the tank, especially the high-density, large-particle iron oxide scale. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an automatic scale cleaning device for quenching tanks that has a reasonable structure, high slag removal efficiency, strong automation, and safe and convenient operation.

[0004] The technical solution of this utility model is as follows: It includes a quenching tank and an automatic control device. Multiple sets of automatic oxide scale cleaning devices are installed in a recessed area on one side wall of the tank. These automatic oxide scale cleaning devices consist of a high-pressure air pipe, a porous slag suction head, an exhaust pipe, an impurity collector connecting pipe, a high-pressure air jet pipe, high-pressure air branch pipes, an exhaust valve, and an intelligent control module. The high-pressure air pipe provides clean high-pressure gas through a compressor and a storage tank, and is connected to a high-pressure air jet pipe horizontally positioned at the bottom of the quenching tank. The porous slag suction head is installed in the area where iron oxide scale easily accumulates at the bottom of the quenching tank. The lower end of the exhaust pipe is connected to the porous slag suction head, and the upper part is connected to the impurity collector connecting pipe through an exhaust valve. A lower high-pressure air branch pipe and an upper high-pressure air branch pipe are respectively installed at the upper and lower ends of the exhaust pipe. The intelligent control module integrates a pressure sensor and a time controller for setting and controlling the start, stop, and cycle of the high-pressure slag removal operation.

[0005] Furthermore, the pneumatic acceleration chamber of the porous slag suction head is designed as a Laval tubular structure to enhance gas flow rate and density difference between the upper and lower parts.

[0006] Furthermore, the exhaust pipe is a wear-resistant and corrosion-resistant special coated pipe that transports airflow carrying solid particles.

[0007] Furthermore, the impurity collector adopts a cyclone separator or filter collection device, and the pipeline is equipped with an airflow accelerator and a buffer separation section to achieve the separation of solid residues and gases. The collected purified air can be discharged or recycled.

[0008] The beneficial effects of this invention are as follows: it utilizes the density difference generated by high-pressure air within the pipeline to directly remove iron oxide scale and blocky impurities from the bottom of the quenching tank without manual intervention. Furthermore, it causes minimal disturbance to the liquid within the tank, thus not affecting the stability of the ongoing quenching process. It boasts advantages such as a reasonable structure, high slag removal efficiency, strong automation, and safe and convenient operation. It automates and streamlines the slag removal process, avoids the safety hazards of manual cleaning, and helps maintain the cleanliness of the coolant and the stability of the quenching quality. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the quenching tank along its length. In the diagram: 1 is the high-pressure air pipe, 2 is the porous slag suction head, 3 is the exhaust pipe, 4 is the connecting pipe, 5 is the high-pressure air injection pipe, 6 is the high-pressure air lower branch pipe, 7 is the exhaust valve, and 8 is the high-pressure air upper branch pipe. Detailed Implementation

[0010] like Figure 1 , Figure 2As shown, an automatic scale removal device for a quenching tank includes a quenching tank and an automatic control device, etc. Multiple sets of automatic scale removal devices are installed on one side wall of the tank. This automatic scale removal device consists of a high-pressure air pipe 1, a porous slag suction head 2, an exhaust pipe 3, an impurity collector connecting pipe 4, a high-pressure air injection pipe 5, high-pressure air branch pipes, an exhaust valve 7, and an intelligent control module. The high-pressure air pipe 1 provides clean high-pressure gas through a compressor and a storage tank, and is connected to the high-pressure air injection pipe 5, which is horizontally located at the bottom of the quenching tank. The pneumatic acceleration chamber of the porous slag suction head 2 is designed with a Laval tubular structure to enhance gas flow rate and the density difference effect, and is installed in the easily accumulated area at the bottom of the quenching tank. The exhaust pipe 3 is a wear-resistant and corrosion-resistant specially coated pipe, connected at the lower end to the porous slag suction head 2, and at the upper end to the impurity collector connecting pipe 4 via the exhaust valve 7. Simultaneously, a high-pressure air lower branch pipe 6 and a high-pressure air upper branch pipe 8 are respectively installed at the upper and lower ends of the exhaust pipe 3. The impurity collector employs a cyclone separator or filter-type collection device. The pipeline includes an airflow accelerator and a buffer separation section to separate solid residue from gas. The collected purified air can be vented or recycled. The intelligent control module integrates a pressure sensor and a time controller for setting and controlling the start, stop, and cycle of the high-pressure slag removal operation. To implement this invention, the following steps can be followed: Installation: Fix the multi-hole slag suction head 2 at a pre-set cleaning point at the bottom of the quenching tank (multiple heads can be set according to the residue distribution pattern) and connect it to the exhaust pipe 3. The other end of the exhaust pipe 3 is connected to an external impurity collector via an exhaust valve 7 and a connecting pipe 4. Connection and Control: Set up the connection between the intelligent control module and the high-pressure air unit, and adjust the control parameters (such as working pressure, single working time, interval cycle, etc.). Operation: Upon system startup, the high-pressure air unit supplies high-pressure gas to the high-pressure air jet pipe 5 located at the bottom of the quenching tank via high-pressure air pipe 1. The high-pressure gas jetting from the bottom of the tank agitates the iron oxide scale particles and small iron blocks deposited thereon. High-pressure gas is then supplied to the exhaust pipe 3 via the high-pressure air lower branch pipe 6 and the high-pressure air upper branch pipe 8. Upon entering the exhaust pipe 3, the high-pressure gas creates a density difference, drawing in the surrounding iron oxide scale deposited thereon. This scale is then carried by the high-speed airflow through the exhaust pipe 3 to the impurity collector connected to the connecting pipe 4. During operation, it can be set to automatically start at specific times each day, or triggered by a detection signal indicating the thickness of the residue at the bottom of the tank. Maintenance: Regularly check the wear of the pipes and the amount of slag collected in the impurity collector. Clean or replace the filter element or slag collection bucket in the collector. This invention features a reasonable structure, high slag removal efficiency, strong automation, and safe and convenient operation. It automates and efficiently removes slag, avoids the safety hazards of manual cleaning in the tank, and helps maintain the cleanliness of the coolant and the stability of the quenching quality.

Claims

1. An automatic scale removal device for a quenching tank, comprising a quenching tank and an automatic control device, characterized in that: Multiple sets of automatic scale removal devices are installed on one side wall of the pool. The automatic scale removal device consists of a high-pressure air pipe (1), a porous slag suction head (2), an exhaust pipe (3), an impurity collector connecting pipe (4), a high-pressure air jet pipe (5), a high-pressure air branch pipe, an exhaust valve (7), and an intelligent control module. The high-pressure air pipe (1) provides clean high-pressure gas through a compressor and a storage tank and is connected to the high-pressure air jet pipe (5) which is horizontally set at the bottom of the quenching pool. The porous slag suction head (2) is installed in the easy-to-accumulate area at the bottom of the quenching pool. The lower end of the exhaust pipe (3) is connected to the porous slag suction head (2), and the upper part is connected to the impurity collector connecting pipe (4) through the exhaust valve (7). At the same time, a high-pressure air lower branch pipe (6) and a high-pressure air upper branch pipe (8) are respectively set at the upper and lower ends of the exhaust pipe (3). The intelligent control module integrates a pressure sensor and a time controller to set and control the start and stop and cycle of the high-pressure slag removal operation.

2. The automatic oxide scale cleaning device in a quenching tank according to claim 1, characterized in that: The pneumatic acceleration chamber of the porous slag suction head (2) is designed as a Laval tubular structure.

3. An automatic scale removal device for a quenching tank according to claim 1 or 2, characterized in that: The exhaust pipe (3) is a wear-resistant and corrosion-resistant special coating pipe.

4. An automatic scale removal device for a quenching tank according to claim 1 or the present invention, characterized in that: The impurity collector adopts a cyclone separator or filter collection device, and the pipeline is equipped with an airflow accelerator and a buffer separation section to achieve the separation of solid residues and gases. The collected purified air can be discharged or recycled.

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