how is the lid on an open head drum fastened

How is the Lid on an Open Head Drum Fastened?

Open head drums are versatile containers made for storing, transporting, and dispensing different types of fluids such as chemicals, pharmaceutical ingredients, and food products. One of their most notable features is their removable lid, which can be fastened using different means depending on the type of drum and the application. In this article, we will discuss how the lid on an open head drum is fastened and the different options available for securing it.

Understanding the Open Head Drum Anatomy

An open head drum has a cylindrical body with two openings on top, one larger than the other. The larger opening is called the bunghole, and it has a diameter of 2 inches or more. The smaller opening, which is located at the center of the bunghole, is called the bung, and it has a diameter of approximately 3/4 inches. The bung serves as a vent and a filling/dispensing point, while the bunghole is used for inserting and removing the lid.

The lid for an open head drum is typically made of steel or plastic, and it can be in different designs depending on the application. Some common types of drum lids include:

- Bolt ring lid: This type of lid has a steel ring that wraps around the drum's top and a latch that secures it to the drum body. Bolt ring lids are common for drums used in industrial settings that require high security and durability.

- Lever lock lid: This type of lid has a steel band that wraps around the drum's top and a lever that secures it to the drum body. Lever lock lids are easy to operate and are commonly used for drums that are frequently opened and closed.

- Screw-on lid: This type of lid screws onto the bunghole and is usually made of plastic. Screw-on lids are common for drums used in the food and beverage industry and for packaging small quantities of chemicals and cosmetics.

- Snap-on lid: This type of lid snaps onto the bunghole and is also commonly made of plastic. Snap-on lids are easy to install and remove and are ideal for drums used for short-term storage and transportation.

Fastening Options for Open Head Drum Lids

1. Bolt Ring Fastening

The bolt ring fastening method involves using a steel ring and a latch to secure the lid to the drum body. To fasten the lid using a bolt ring, you need to follow these steps:

- Position the lid onto the drum's top, aligning the holes on the lid with those on the drum body.

- Place the steel ring around the body of the drum, making sure it rests on the lip of the drum's top.

- Tighten the bolt ring until it secures the lid tightly to the drum body.

Bolt ring fastenings are strong and secure, and they are commonly used for drums used in harsh environments and for transporting hazardous materials. However, they can also be cumbersome to operate, and they require a tool to open and close.

2. Lever Lock Fastening

The lever lock fastening method involves using a steel band and a lever to secure the lid to the drum body. To fasten the lid using a lever lock, you need to follow these steps:

- Position the lid onto the drum's top, aligning the holes on the lid with those on the drum body.

- Wrap the steel band around the body of the drum, making sure it rests on the lip of the drum's top.

- Push the lever down until it locks onto the steel band, securing the lid tightly to the drum body.

Lever lock fastenings are easy to operate, and they are commonly used for drums used in industrial and commercial settings. They provide a secure seal but can be prone to leakage over time.

3. Screw-On Fastening

The screw-on fastening method involves screwing the lid onto the bunghole using threading. To fasten the lid using a screw-on method, you need to follow these steps:

- Align the lid's threads with the threads on the bunghole.

- Begin to twist the lid clockwise to initiate the screw-on process.

- Keep twisting the lid until it sits tightly onto the bunghole, creating a seal.

Screw-on fastenings are commonly used for drums used in the food and beverage industry and for packaging small quantities of chemicals and cosmetics. They are easy to operate and provide a secure seal, but can be prone to leakage if not installed correctly.

4. Snap-On Fastening

The snap-on fastening method involves snapping the lid onto the bunghole by applying pressure on the lid's edges. To fasten the lid using a snap-on method, you need to follow these steps:

- Position the lid onto the bunghole, making sure it aligns with the opening.

- Press down on the lid's edges, creating pressure and causing the lid to snap, creating a seal.

Snap-on fastenings are ideal for drums used for short-term storage and transportation. They are easy to operate and can be quickly installed and removed, but they do not offer the same level of security as bolt ring or lever lock fastenings.

Conclusion

The lid on an open head drum can be fastened using different methods depending on the type of drum and the application. Bolt ring, lever lock, screw-on, and snap-on fastenings are some of the common options available for securing open head drum lids. Each method has its benefits and drawbacks, and choosing the right fastening option depends on the drum's intended use and the operator's preferences.