Scraper assembly for side wall of forced cooling machine

Abstract

According to the side wall scraper assembly of the forced cooling machine, the convex-concave embedded design is adopted, the number of fasteners is increased or high-strength fasteners are replaced, and the connection stability and the installation strength of the wall scraper plate are improved. The structure effectively reduces the falling phenomenon of the wall scraper, enhances the operation reliability of the forced cooling machine, reduces the maintenance difficulty and the safety risk at the same time, and is suitable for the installation and operation of the side wall scraper of industrial equipment such as the forced cooling machine in a forming workshop.

Description

Technical Field

[0001] This utility model relates to an improvement technology for industrial equipment, specifically to a scraper assembly for the side wall of a forced refrigeration unit in a molding workshop. Background Technology

[0002] In the electrolytic aluminum industry, the quality of anode carbon blocks is particularly important. However, a crucial factor affecting anode quality is the forming production system, and the normal operation of the forced chiller is a vital link in ensuring anode quality. After long-term use, deformation of the inner cylinder wall of the forced chiller makes it difficult to adjust the gap between the side wall scraper and the side wall, resulting in incomplete paste removal. Because the original design had a planar mating surface between the wall scraper and the scraper bracket, and each wall scraper was fixed with only two M10*180 / 8.8 grade bolts, the assembly method of the wall scraper and scraper bracket was flawed, and the installation strength did not meet the usage requirements, leading to frequent wall scraper detachment. This caused production to be unstable and discontinuous. Furthermore, during the installation of detached wall scrapers, the internal temperature of the forced chiller was high, requiring cooling to room temperature before work could proceed. Each replacement took more than 4 hours. Therefore, the frequent detachment of wall scrapers prevented the forced chiller from operating continuously and stably, directly and severely restricting the production capacity of the forming system. However, during maintenance, the internal space of the forced chiller was confined, and replacing wall scrapers required multiple people working together. The residual heat inside, combined with the tilted cylinder, made it impossible for people to stand, posing a high safety risk during maintenance. Therefore, there is an urgent need for an improved wall scraper and scraper support structure to enhance its connection stability and operational reliability. Utility Model Content

[0003] The purpose of this utility model is to provide a side wall scraper assembly for a forced refrigeration unit. By adopting a convex-concave interlocking design and increasing the number of fasteners or replacing them with high-strength fasteners, the installation strength and stability of the wall scraper are improved, thereby solving the problem of frequent wall scraper detachment in traditional structures.

[0004] To achieve the above objectives, the present invention provides a side wall scraper assembly for a forced refrigeration unit, comprising: a wall scraper with a raised structure on its back side that mates with a scraper bracket; a scraper bracket with a grooved structure on its front side that mates with the wall scraper, forming a fitted fit with the raised structure of the wall scraper; at least three fixing bolts for fixing the wall scraper to the scraper bracket, wherein the number of fixing bolts is increased compared to traditional designs, or higher strength bolt materials are used; and a bracket base for connecting the scraper bracket to the side wall of the forced refrigeration unit via the base, the design of which enhances the stability of the overall structure.

[0005] Working principle: The improved wall scraper uses a raised structure that engages with the grooved structure of the scraper bracket, effectively distributing loads during operation and reducing the risk of the scraper falling off due to vibration or impact. Simultaneously, the added fixing bolts or high-strength bolts provide greater connection strength, further improving assembly reliability. The bracket base provides additional support and fixation for the scraper bracket, enhancing overall resistance to deformation.

[0006] Technical efficacy and advantages:

[0007] Improved connection stability: The interlocking design significantly enhances the bonding force between the wall scraper and the scraper bracket, reducing the probability of detachment;

[0008] Improved installation strength: Increasing the number of fasteners or replacing them with high-strength bolts effectively improves the connection's resistance to impact and vibration;

[0009] Enhanced operational reliability: The improved structure can adapt to the long-term operation of the forced refrigeration unit, reduce maintenance frequency, and ensure production continuity;

[0010] Improved ease of maintenance: The interlocking structure makes the installation and removal of the wall scraper easier, reducing maintenance difficulty and safety risks.

[0011] Furthermore, the raised structure is a rectangular raised structure, which can provide a larger scraping surface area and improve the cleaning degree of the paste.

[0012] Furthermore, the fixing bolts are M12*180 / 10.9 grade high-strength bolts to increase their fixing strength and prevent the scraper from falling off.

[0013] Furthermore, the groove structure of the scraper bracket is equipped with reinforcing ribs, which are also designed to provide fixing strength. Attached Figure Description

[0014] Figure 1 This is a front view of the scraper according to an embodiment of the present utility model.

[0015] Figure 2 for Figure 1 BB view. Detailed Implementation

[0016] The following detailed description illustrates the specific implementation method:

[0017] Example 1:

[0018] After 13 years of operation, the inner cylinder wall of the forced-cooling machine in the applicant's molding workshop has deformed, and the detachment of the traditional wall scraper has seriously affected production efficiency. The improved wall scraper and scraper support structure described in this utility model is implemented as follows:

[0019] The wall scraper 2 features a raised structure design: two rectangular protrusions 1, each 10mm high, are located on the back of the wall scraper, distributed on both sides of the plate. These protrusions mate with the grooves of the scraper bracket.

[0020] The groove design of the scraper bracket: The front of the scraper bracket is provided with a rectangular groove that matches the size of the protrusion. The groove depth is 14mm to ensure that the convex and concave structures can fit together firmly.

[0021] Selection and configuration of fixing bolts: Replace the original two M10 bolts with four M12*180 / 10.9 grade high-strength bolts 3, and use anti-loosening washers during installation to further improve the stability of the connection.

[0022] Improvements to the support base: The support base is made of high-temperature resistant alloy steel and its thickness has been increased to improve support strength.

[0023] Results after implementation:

[0024] The wall scraper 2 remained stable during the long-term operation of the forced refrigeration unit, without any detachment.

[0025] After each routine maintenance, the installation time was reduced by more than 50%, and the safety risks were significantly reduced.

[0026] The scraper support did not deform or loosen under high temperature conditions, thus improving operational reliability.

[0027] Example 2:

[0028] In another workshop with even higher operating requirements, the protrusions on the wall scraper 2 were replaced with four columnar protrusions that fit into the circular grooves of the scraper bracket. Simultaneously, the fixing bolts were made of 12.9 grade alloy steel. Actual operational data shows that this improvement further enhances structural strength, making it suitable for higher-intensity operating environments.

[0029] After the upgrade, the operating rate of the forced-cooling unit increased from 86% to 96.1%. Statistics show that the forced-cooling unit experienced 236.5 hours of downtime due to malfunctions throughout 2022, with 223.5 hours of downtime occurring from January to September 2022. Since the upgrade was completed in September 2022, there have been zero hours of downtime for the forced-cooling unit, and no malfunctions such as material sticking, blockage, spherical paste, or broken tool blades have occurred. The procurement cost for spare parts such as scraper supports, wall scrapers, and corner scrapers for the forced-cooling unit in 2023 and 2024 was zero.

[0030] The following are the costs of spare parts for the forced-cooling unit's scraper brackets, wall scrapers, and corner scrapers in 2022 and 2023:

[0031] 2022: Purchased scraper brackets, wall scrapers, and corner scrapers of the original design for a total of 198,000 yuan, and purchased improved scraper brackets, wall scrapers, and corner scrapers for a total of 75,000 yuan.

[0032] 2023: 0 yuan.

[0033] Final benefits

[0034] 1. Savings in spare parts costs: 198,000 yuan - 75,000 yuan = 123,000 yuan;

[0035] 2. The failure rate of the forced chiller has decreased. Compared with 2021, the downtime of the forced chiller equipment has been reduced by 200 hours. Based on a production capacity of 34 tons / hour, this translates to an additional 34 tons / hour × 200 hours = 6800 tons of green anodes produced. Based on a green anode price of 6000 yuan / ton, minus the green anode manufacturing cost of 4900 yuan / ton, this indirectly saves 6800 tons × (6000-4900) yuan / ton = 7.48 million yuan.

[0036] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness or practicality of this utility model. The specific embodiments described in the specification can be used to interpret the claims.

Claims

1. A sidewall scraper assembly for a forced-cooling machine, characterized in that, include: The wall scraper has a raised structure on its back side that mates with the scraper bracket; The scraper bracket has a groove structure on its front side that mates with the wall scraper, which fits into the protruding structure of the wall scraper. No fewer than 3 fixing bolts are used to fix the wall scraper to the scraper bracket; The scraper bracket is connected to the side wall of the refrigeration unit via the base.

2. The forced-cooling machine sidewall scraper assembly according to claim 1, characterized in that, The raised structure of the wall scraper is a rectangular protrusion.

3. The forced-cooling unit sidewall scraper assembly according to claim 2, characterized in that, The fixing bolts are M12*180 / 10.9 grade high-strength bolts.

4. The forced-cooling machine sidewall scraper assembly according to any one of claims 1-3, characterized in that, The groove structure of the scraper bracket is provided with reinforcing ribs.

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