In modern pig slaughtering operations, achieving a visually clean and microbiologically safe carcass requires a combination of mechanical and thermal processes. The pig singeing oven (also called a pig singeing furnace) is a critical piece of pig slaughtering equipment that bridges the gap between mechanical dehairing and final carcass polishing. This guide covers everything you need to know about singeing technology, from technical parameters to operational best practices.
What exactly is a singeing oven in pig slaughtering?
A pig singeing oven is a specialized slaughterhouse machine designed to remove residual bristles from pig carcasses after the mechanical dehairing process. The LML-I automatic singeing furnace is mainly used to singe the pig carcasses after hair removal, remove the residual hair, and make the pig carcasses hygienic and hair-free . The machine also serves a critical food safety function: the high-temperature flames reduce bacterial counts on the carcass surface, improving the microbiological quality of pork
Can't the dehairing machine remove all the hair?
No. After mechanical dehairing, most of the pig hair is removed, but fine bristles and fluff remain embedded in the skin. The pig singeing furnace addresses this gap by using high-temperature flames to burn off these residual hairs
What is the working principle of a pig singeing furnace?
1. The pig singeing oven operates on a highly automated principle combining photoelectric sensing, PLC control, and gas combustion systems. When the pig carcass enters the furnace, a photoelectric sensor detects its presence and sends a signal to the control system, which automatically ignites the flames . The carcass passes through the flame zone for an adjustable duration before the flames automatically extinguish as the carcass exits
2. The pig carcass, suspended from the overhead conveyor line, enters the pig singeing furnace after completing the dehairing and washing processes.
3. A photoelectric sensor detects the carcass and sends a signal to the control system.
4. The control system activates the automatic ignition device. Gas valves open, and flames ignite
5. The carcass passes through the flame zone for 2 to 6 seconds (adjustable via the control system). During this time, residual hairs are burned off and surface bacteria are reduced .
6. As the carcass exits, the photoelectric sensor signals the system to automatically extinguish the flames, saving fuel.
|
Parameter |
Specification |
|
Model |
LML-I Automatic Singeing Furnace |
|
Production Capacity |
3000 heads/8 hours (approx. 375 heads/hour) |
|
Singeing Time (Adjustable) |
2 – 6 seconds |
|
Voltage |
AC 220V |
|
Dimensions (L×W×H) |
2200 × 1200 × 3000 mm |
|
Work Pressure (LPG) |
0.3 – 0.5 MPa |
|
Fuel Type |
Liquefied gas / Natural gas |
Modern pig singeing ovens feature a control system that manages the entire singeing process. The PLC receives signals from photoelectric sensors and automatically controls ignition, flame duration, and extinguishing. The system uses advanced gas automatic control technology, allowing flame size and singeing time to be adjustable for different production requirements .
A photoelectric system monitors carcass entry and exit in real time. This on-demand operation ensures that flames are only active when a carcass is present, significantly reducing gas consumption and improving energy efficiency.
Safety is paramount in any equipment using flammable gas. The pig singeing oven is equipped with a gas leak detection and automatic protection system. When the surrounding gas concentration reaches a set value, the system automatically shuts off the power and gas valves . This feature is essential for preventing accidents and ensuring operator safety.
High-quality pig singeing furnaces are equipped with heat reflective panels inside the oven walls. These panels serve two purposes :
Energy saving: They prevent heat from escaping the furnace
Safety: They prevent operators from being burned by the hot exterior surface
The pig singeing oven is constructed with stainless steel (Grade 304) to ensure durability, corrosion resistance, and easy cleaning—essential qualities for any slaughterhouse environment. Stainless steel construction also helps meet food safety and hygiene regulatory requirements
How to properly operate a pig singeing oven?
1.Gas Supply: Ensure gas supply is open and pressure is within specified range (0.3-0.5 MPa)
2. Power: Verify power connection is stable
3. Safety Systems: Test gas leak alarm system functionality
4. Conveyor: Ensure the conveyor line is operating properly
The control system and photoelectric sensors handle the entire singeing process automatically
Singeing time is typically set between 2 and 6 seconds depending on carcass size and desired effect
Operators should monitor the system for any alarms or irregularities
Critical safety step: At the end of each production shift, operators must close the power supply and gas valves to ensure safety.
The pig singeing oven is an indispensable piece of pig slaughtering equipment in modern meat processing. By combining high-temperature flames, automated control systems, photoelectric sensors, and safety features, it effectively removes residual bristles and reduces bacterial counts on the carcass surface. Whether you are setting up a new slaughter line or upgrading existing equipment, investing in a quality singeing furnace is essential for producing visually appealing, microbiologically safe pork products.
If you are considering adding a pig hair removal furnace to your pig slaughtering plant, please choose Qingdao ZBHT Machinery Co., Ltd. - a professional manufacturer with 17 years of experience in slaughtering equipment manufacturing, to provide a reliable guarantee for your production line.
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