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Hydraulic dehairing machine pig hog swine abattoir equipment slaughtering machine
In the previous article, we explored the initial stages of the pig abattoir slaughter line, focusing on killing and bloodletting. Now, we will delve into the subsequent steps of the process, namely scalding and dehairing. These essential procedures play a crucial role in ensuring the efficiency and hygiene of pig slaughter operations. This article will outline various methods employed in scalding and dehairing pigs, highlighting their benefits and significance in the industry. (What are the main pig slaughtering equipments needed for modern hog abattoir? )

The first method involves the use of a pig scalding tank. After bleeding, the pigs are unloaded onto the receiving table of the scalding tank. The pig body is then carefully slid into the tank for scalding. Scalding can be performed either manually or using machinery. 

It is important to maintain the water temperature between 58-62℃, as excessively high temperatures may result in a whitening effect on the pig body, which adversely affects the subsequent dehairing process. The recommended scalding time ranges from 4 to 6 minutes. To release water vapor, a “skylight” is designed directly above the pig scalding tank.

An alternative approach involves utilizing a sealed canal-type pig scalding tank. Here, the pig body is automatically transported into the tank via an inclined rail connected to the bloodletting conveyor line. To ensure optimal scalding, the pig remains submerged in the tank for 4-6 minutes. During the conveying and scalding process, a pressure rod is employed to keep the pig body submerged, preventing it from floating. The sealed canal-type tank offers excellent heat preservation capabilities. After scalding, the pigs are automatically transported out through an uphill bend rail via an automated conveyor line.

The steam pig scalding tunnel system represents a significant technological advancement in pig scalding. After bleeding, the pigs are hung on an automatic bloodletting conveyor line and enter the steam scalding tunnel. This method greatly reduces labor intensity, enhances work efficiency, and enables mechanized scalding operations. Moreover, it eliminates the risk of cross-infection between pigs, resulting in more hygienic meat products. Currently, the steam pig scalding tunnel system stands as the most advanced technology available for pig scalding.

For the dehairing process, horizontal pig hydraulic dehairing machines are employed. These machines come in different models catering to small, medium, and large pigs. Once the pig has been scalded, it is removed from the tank using a rake and automatically enters the dehairing machine.

Within the machine, the pig’s hair is removed through the tumbling action of a large drum and the scraping motion of soft paddles. The dehaired pig body is then released onto a trimming conveyor or into a clean water tank for further cleaning.

The spiral pig dehairing machine is utilized in conjunction with a top-sealed scalding tank or a steam scalding tunnel system. Following scalding, the pigs are unloaded from the automatic bloodletting conveyor line using a pig unloader and transferred to the spiral dehairing machine.

Soft paddles and the spiral advancement mechanism work together to remove the remaining hair, pushing the dehaired pig body toward the opposite end of the dehairing machine. The pig then enters the trimming conveyor for final trimming.

Next process is pork carcass splitting.

Scalding and dehairing are vital steps in the pig abattoir slaughter line, contributing to improved efficiency and hygiene in the meat processing industry. The methods discussed in this article offer various approaches to achieve optimal scalding and thorough dehairing of pig carcasses.
The pig scalding tank, whether operated manually or with machinery, provides a controlled environment for scalding, ensuring the removal of hair from the pig’s body. The sealed canal-type scalding tank enhances heat preservation and prevents floating of the pig during the scalding process, maintaining consistent and effective results.
The steam pig scalding tunnel system revolutionizes the scalding process by mechanizing operations, reducing labor intensity, and eliminating cross-contamination risks. This advanced technology not only enhances efficiency but also improves the hygiene standards of the meat produced.
Horizontal and spiral pig dehairing machines further streamline the process by removing hair efficiently and preparing the carcasses for subsequent stages. The combination of tumbling drums, soft paddles, and spiral advancements ensures thorough dehairing, resulting in clean and presentable pig bodies.
By implementing these scalding and dehairing techniques, pig abattoirs can optimize their operations, increase productivity, and deliver high-quality, hygienic meat products to consumers. It is crucial for slaughterhouses to adhere to strict regulations and hygiene standards to ensure food safety and maintain consumer trust.
Continued research and technological advancements in scalding and dehairing processes will further refine these procedures, making them even more efficient, sustainable, and environmentally friendly. The meat processing industry plays a crucial role in meeting the global demand for pork, and by employing the best practices in scalding and dehairing, it can ensure the production of safe, high-quality pork products for consumers worldwide.

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