Guide to Types of Anaerobic Adhesive Dispensing Valves

**Guide to Anaerobic Adhesive Dispensing Valve Types**

The anaerobic adhesive dispensing valve is a specialized device used for dispensing, widely applied in various fields such as electronics, optoelectronics, communications, and industrial manufacturing. Its characteristics of high precision, strong stability, and ease of maintenance make the anaerobic adhesive dispensing valve a key component in many production lines. This article will detail the types, working principles, and application scenarios of anaerobic adhesive dispensing valves, helping readers better understand and choose the dispensing valve that suits their needs.

1. Definition and Characteristics of Anaerobic Adhesive Dispensing Valve

The anaerobic adhesive dispensing valve is a device that uses the principle of pressure bar propulsion to accurately dispense anaerobic adhesive as needed. It mainly consists of components such as the pressure bar, valve body, valve needle, anaerobic adhesive barrel, and solenoid valve, which work closely together to form the entire dispensing system. The characteristics of the anaerobic adhesive dispensing valve are mainly reflected in the following aspects:

1. High Precision: The anaerobic adhesive dispensing valve uses a high-precision propulsion system that can accurately control the dispensing amount, ensuring consistency in the amount of adhesive applied each time.

2. Strong Stability: The valve body and valve needle are made of high-quality materials, which have good corrosion resistance and wear resistance, maintaining stability during long-term use.

3. Easy Maintenance: The valve needle and valve body can be disassembled and replaced, facilitating daily maintenance and cleaning, thus reducing maintenance costs.

4. Wide Applicability: The anaerobic adhesive dispensing valve can be used for various types of dispensing operations, such as SMT assembly, LED chip dispensing, and general PCB dispensing.

2. Types of Anaerobic Adhesive Dispensing Valves

Anaerobic adhesive dispensing valves can be classified into various types based on different classification criteria. The following are the types of anaerobic adhesive dispensing valves listed according to common classification methods:

1. Classification by Working Principle

   * Pneumatic Valve: The pneumatic valve is driven by timed air pulses to open or close the sealing ring, allowing the adhesive to flow out. Pneumatic valves are characterized by fast operation speed and strong reliability, widely used in various dispensing operations.

   * Electric Valve: The electric valve controls the flow of adhesive through a solenoid valve, featuring fast response speed and high control precision. In situations requiring high-precision dispensing, electric valves are a better choice.

2. Classification by Structural Characteristics

   * Spray Valve: The spray valve is suitable for low-viscosity fluids, especially those with a viscosity of less than 1000 cps. It ensures that the fluid is atomized before spraying and quickly returns to its original state after spraying, preventing blockage in the valve.

   * Needle Valve: The needle valve has strong operability for liquids and is suitable for various single-component fluids, commonly used in micro adhesive dispensing applications. The needle valve is adjustable and can operate high-viscosity non-filled fluids under high pressure.

   * Diaphragm Valve: The diaphragm valve is used for adjustable, high-frequency dispensing applications and is suitable for many low to medium viscosity fluids, such as adhesives, solvents, and abrasive materials.

   * Short Tube Valve: The short tube valve is suitable for high-viscosity paste, syrup, and gel-like fluids, and must operate under high pressure. Additionally, the short tube valve is also suitable for line drawing applications.

   * Volume Valve: The volume valve is used for high-precision micro-dispensing operations and is divided into pneumatic control valves and electric control valves. The electric control valve, also known as a screw valve, is suitable for micro adhesive dispensing applications with high-viscosity fluids.

3. Application Scenarios of Anaerobic Adhesive Dispensing Valves

Due to their high precision and stability, anaerobic adhesive dispensing valves are widely used in various production fields. Here are some typical application scenarios:

1. SMT Chip Assembly: The anaerobic adhesive dispensing valve can accurately dispense adhesive, ensuring the fixation and connection quality of chip components, thus improving production efficiency.

2. LED Chip Dispensing: The anaerobic adhesive dispensing valve can adjust the dispensing speed and amount, ensuring the packaging quality of LED chips and avoiding waste and insufficient adhesive.

3. PCB Dispensing: The anaerobic adhesive dispensing valve can quickly adjust the dispensing amount and range, improving dispensing efficiency and product quality, ensuring the stability and reliability of PCB boards.

4. Maintenance and Care of Anaerobic Adhesive Dispensing Valves

To ensure the long-term stable operation of the anaerobic adhesive dispensing valve, regular maintenance and care are required. Here are some common maintenance and care measures:

1. Regularly clean the valve body and valve needle to prevent impurities and adhesive residue from causing blockages.