A calibration and adjustment method for the chute of an old tube - type filter box

Abstract

The present invention discloses a method for calibrating and adjusting the chute of an old tubular filter box body, comprising the following steps: S1. Chute separation: Separating the inlet chute and the outlet chute of the tubular box body from the tubular box body; S2. Parallel calibration: Re-calibrating the parallelism of the inlet chute and the outlet chute to ensure that the inclined surfaces of the inlet chute and the outlet chute of the tubular box body are in the same plane; S3. Chute fixing; S4. Refractory material filling. This method for calibrating and adjusting the chute of the old tubular filter box body can, by readjusting the chute, restore the chute to its original horizontal position, enabling accurate docking when the tubular box body is aligned with the on-line chute, avoiding the situation of uneven staggered layer gaps in the chute after alignment, thus avoiding the blocking relationship formed when the molten aluminum passes through the staggered layer position of the inlet and outlet chutes, effectively avoiding the turbulence of the molten aluminum and the potential hazard of bottom aluminum leakage, and preventing the molten aluminum from being secondarily contaminated, thereby improving the quality of the molten aluminum.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum alloy melting and casting, and specifically to a method for calibrating and adjusting the chute of an old tube-type filter box body. Background Technique

[0002] During the melting and casting production process, the tube-type filter box body is the main on-line purification equipment for aluminum melt in the melting and casting plant. The inlet and outlet of the tube-type box body are upper and lower inclined chutes. When in use, it is connected to the on-line chute through extrusion. Since the tube-type box body of Mitsui is of a assembled structure, during long-term use, the box body is deformed, resulting in the deviation of the inlet and outlet of the filter box body from the centering position. When the tube-type box body is aligned with the on-line chute, it cannot be accurately docked, resulting in uneven staggered gaps in the chute after alignment. After pressing down the sealing material, it is prone to uneven stress and leakage. When the aluminum liquid flows, there is a hidden danger of aluminum leakage; at the same time, when the aluminum liquid passes through the inlet and outlet chutes, a blocking relationship is easily formed at the staggered position, resulting in the appearance of turbulent flow. The oxide scale on the surface of the aluminum liquid is easily involved in the aluminum melt, causing secondary pollution, and there is a great quality risk.

[0003] In order to improve the service life and quality of the box body, through in-depth research on the box body structure and the inlet and outlet chutes, we have explored a method for calibrating and adjusting the chute of an old tube-type filter box body to solve the above problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a method for calibrating and adjusting the chute of an old tube-type filter box body. By readjusting the chute, the chute is restored to its original horizontal position, so that when the tube-type box body is aligned with the on-line chute, it can be accurately docked, avoiding the uneven staggered gaps in the chute after alignment, thereby avoiding the formation of a blocking relationship when the aluminum liquid passes through the staggered position of the inlet and outlet chutes, effectively avoiding the turbulent flow of the aluminum liquid and the hidden danger of bottom aluminum leakage, and avoiding secondary pollution of the aluminum melt, thereby improving the quality of the aluminum melt, and effectively solving the problems in the background technique.

[0005] To achieve the above object, the present invention provides the following technical solution: A method for calibrating and adjusting the chute of an old tube-type filter box body, including the following steps:

[0006] S1. Chute separation: Separate the inlet chute and the outlet chute of the tube-type box body from the tube-type box body;

[0007] S2. Parallel calibration: Re-calibrate the parallelism of the inlet chute and the outlet chute to ensure that the inclined surfaces of the inlet chute and the outlet chute of the tube-type box body are in the same plane;

[0008] S3. Flume Fixing: After calibration and parallel alignment, weld the inlet flume and the outlet flume to the corresponding parts of the tubular box body through extended bolts, and ensure that the inclined surfaces of the inlet flume and the outlet flume are in the same plane. Then, weld steel plates to the sides and bottom of the contact part between the flume and the tubular box body to support the flume.

[0009] S4. Refractory Filling: Fill the gaps between the inlet flume, the outlet flume and the tubular box body with refractory materials. After the refractory materials are fixed, grind them, and then apply a coating to make the inner cavity of the flume flat and ready for normal use.

[0010] As a preferred technical solution of the present invention, in S1, the specific method of flume separation is: Remove the fixing bolts for fixing the inlet flume and the outlet flume, and the flumes can be separated.

[0011] As a preferred technical solution of the present invention, when welding the steel plate in S3, first measure the deformation degree of the box body, and then cut the steel plate and weld it to the sides and bottom of the contact part between the flume and the tubular box body.

[0012] As a preferred technical solution of the present invention, the refractory material includes fiber paper and refractory castable. The steps of filling the refractory material are: First, stick the fiber paper on the opposite end faces of the box body and the flume, and then pour the refractory castable.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The method for calibrating and adjusting the flume of the old tubular filtration box body in the example of the present invention restores the flume to its original horizontal position by readjusting the flume, enabling accurate docking when the tubular box body is aligned with the on-line flume. It can avoid the uneven situation of staggered layer gaps in the flume after alignment, thereby preventing the aluminum liquid from forming a blocking relationship at the staggered layer position of the inlet and outlet flumes, effectively avoiding the hidden dangers of aluminum liquid turbulence and bottom aluminum leakage, and preventing the secondary pollution of the aluminum melt, thus improving the quality of the aluminum melt. Description of the Drawings

[0015] Figure 1 It is a flow chart of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the present invention.

[0017] In the figure: 1 Flume, 2 Steel plate, 3 Inclined surface. Detailed Embodiments

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-2 The present invention provides a technical solution: a method for calibrating and adjusting the flow channel of an old tubular filter box, comprising the following steps:

[0020] S1. Flow channel separation: separating the inlet flow channel and the outlet flow channel of the tubular box from the tubular box;

[0021] S2. Parallel calibration: Recalibrate the parallelism of the inlet flow channel and the outlet flow channel to ensure that the inclined surface of the inlet flow channel of the tubular box and the inclined surface of the outlet flow channel remain in the same plane;

[0022] S3, flow channel fixing: weld the inlet flow channel and the outlet flow channel after calibration and parallelization to the corresponding parts of the tubular box by lengthening bolts, and keep the inclined surface 3 of the inlet flow channel and the inclined surface 3 of the outlet flow channel in the same plane, and then weld steel plates on the side and bottom of the contact part between the flow channel and the tubular box to support the flow channel 1;

[0023] S4. Refractory material filling: fill the gaps between the inlet and outlet chutes and the tubular box with refractory materials, grind them after they are fixed, and apply paint after grinding to keep the inner cavity of the chutes flat before putting them into normal use.

[0024] The paint applied after grinding is boron nitride, a commonly used demoulding material in the production of aluminum processing products.

[0025] Furthermore, in S1, the specific method of separating the flow channels is: removing the fixing bolts used to fix the inlet flow channel and the outlet flow channel to separate the flow channels.

[0026] The flow channel includes an inlet flow channel and an outlet flow channel which are installed on the same side of the tubular box.

[0027] The flow trough is fixed to the tubular box by bolts. Since the box is used in a hot state and cleaned and maintained in a cold state, and the cold and hot states are alternated, the lining is deformed, causing the inlet and outlet to change from a straight-through shape to a trumpet shape. After the flow trough is matched on the production line, it is easy to have staggered layers or poor sealing. In actual production, it is easy to have quality risks of turbulence and safety risks of aluminum leakage. After the flow trough is corrected, it can be restored to its original level, which can effectively avoid the hidden dangers of aluminum liquid turbulence and bottom aluminum leakage.

[0028] Further, when welding the steel plate in S3, first measure the deformation degree of the box body, then cut the steel plate 2 and weld it on the side and bottom of the contact part between the chute 1 and the tubular box body, ensuring a more stable structure between the chute 1 and the box body, not prone to deformation, and stably docking with the on-line chute persistently.

[0029] Further, the refractory material includes fiber paper and refractory castable, and the steps of filling the refractory material are as follows: first, stick the fiber paper on the opposite end faces of the box body and the chute, and then inject the refractory castable. The purpose of the fiber paper is to increase the feeding ability after heating and cooling, and reduce the hidden danger of leakage from the expansion gap after heating expansion. The injection of the castable is to make up for the larger gap left after calibration and avoid the risk of aluminizing.

[0030] Before the transformation, in order to make up for the deformation amount, usually 3 - 4 layers of asbestos were pressed on the deformed box body, increasing the maintenance difficulty. There were easily slag inclusions in the gaps, posing quality hazards, and it was easy to leak aluminum during use. After the transformation, the inside of the chute is flat to avoid slag inclusion, and only 1 layer of asbestos needs to be pressed during alignment, which can prevent aluminum leakage.

[0031] By readjusting the chute in the present invention, the chute is restored to its original horizontal position, enabling accurate docking when the tubular box body is aligned with the on-line chute. It can avoid the situation of uneven staggered layer gaps in the chute after alignment, thereby preventing the formation of a blocking relationship when the molten aluminum passes through the staggered layer position of the inlet and outlet chutes, effectively avoiding the turbulence of the molten aluminum and the hidden danger of bottom aluminum leakage, and preventing the molten aluminum from being secondarily polluted, thus improving the quality of the molten aluminum.

[0032] The parts not disclosed in the present invention are all prior arts, and their specific structures, materials, and working principles will not be elaborated in detail. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A calibration and adjustment method for the chute of an old tube-type filter box, characterized in that: It includes the following steps: S1. Runner separation: Separate the inlet runner and the outlet runner of the tubular box body from the tubular box body; S2. Parallel calibration: Re - calibrate the parallelism of the inlet runner and the outlet runner to ensure that the inclined planes of the inlet runner and the outlet runner of the tubular box body are in the same plane; S3. Runner fixing: Weld the inlet runner and the outlet runner after parallel calibration to the corresponding parts of the tubular box body through extended bolts, and keep the inclined planes of the inlet runner and the outlet runner in the same plane. Then, weld steel plates on the side and bottom of the contact part between the runner and the tubular box body to support the runner. When welding the steel plates, first measure the deformation degree of the box body, then cut the steel plates and weld them on the side and bottom of the contact part between the runner and the tubular box body; S4. Refractory material filling: Fill the gap between the inlet runner, the outlet runner and the tubular box body with refractory materials. After the refractory materials are fixed, polish them. After polishing, brush the coating to make the inner cavity of the runner flat and then it can be put into normal use. The refractory materials include fiber paper and refractory castable. The steps of filling the refractory materials are as follows: First, stick the fiber paper on the opposite end faces of the box body and the runner, and then pour the refractory castable; 2. The calibration adjustment method for the chute of the old tube-type filter box according to claim 1, characterized in that: In S1, the specific way of runner separation is: Remove the fixing bolts used to fix the inlet runner and the outlet runner, and the runners can be separated.

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