Pneumatic Double Gate Ceramic Feed Valve

YGZ644TC pneumatic ceramic feed valve has a wide range of applications in the ash system of power plants, but its wear resistance is an urgent problem to be solved. Nowadays, with the wide application of ceramics, the emergence of ceramic discharge valves has solved the problem of valve wear resistance. The ceramic feed valve is suitable for the dry ash system of the power plant, the feeding and conveying of the silo pump, and it is also suitable for the opening and closing of various abrasive dry dust, water and other media such as mining, papermaking, chemical industry, etc. on the pipeline. The ceramic feed valve refers to Armstrong valve technology. After closing, it is completely sealed in any direction. The valve body and bonnet are welded with WCB steel castings and seamless steel pipes. The packing is made of hard seals. It has good sealing performance, strong wear resistance, small starting load, less dust jamming and ash formation, and long service life.

Structural features

1. The unique structural design of the gate plate and the gate rod makes the valve plate spin when the valve is closed. In this way, the self-fitting sealing between the valve plate and the valve seat and the uniform wear of the valve plate are realized, and the durable sealing performance can be achieved in the medium with abrasive materials. Flexible opening and closing, reliable sealing

The design of the 2-chamber completely avoids the problem of jamming, and is suitable for silo pump or economizer feed valve, silo top switching valve

3 The nominal pressure of the pneumatic actuator is 0.4-0.6Mpa, and the nominal pressure of the valve is 1MPa

4. It can meet a variety of installation methods and transmission devices, manual, pneumatic, electric. Adopt pneumatic transmission mode, non-standard can be customized

5. More than 200,000 static tests in fly ash, reliable sealing. The gate, gate seat and flow-through parts are made of high-performance structural ceramics, which are resistant to wear and have a long service life.

Performance advantage

YGZ644TC pneumatic ceramic feed valve adopts structural ceramics as sealing pair, which is resistant to erosion and good wear resistance!

The ceramic feed valve has a polishing and self-cleaning function during the opening and closing process. When the valve is closed, it is sealed in both directions, and the opening and closing are flexible.

Non-standard, purging ports can be set according to different working conditions, automatic purging system, suitable for the transportation of dry ash, slurry, materials and other media, small starting load, less ash accumulation, no jamming, simple maintenance, long service life .

working principle

The principle of the pneumatic ceramic feed valve is: when the air source enters from the upper air inlet, the valve stem drives the valve plate to move downward, and the valve closes. When the air source enters from the lower air inlet, the valve stem drives the valve plate to move upward, and the valve opens. A spring is loaded between the valve plate and the valve seat, and the spring force always presses the valve plate to the valve seat to ensure the sealing of the valve, and allows the valve plate to move vertically up and down, which helps to compensate the thermal expansion and contraction of the valve parts, and It can overcome the effect of any back pressure change on the seal and prevent particulate media from entering between the two sealing surfaces. During the opening and closing process, the valve plate can rotate, which makes grinding and polishing between the sealing surfaces, and because the valve body is eccentric to the channel, when the material is opened and discharged, a vortex will be generated, and the formed material vortex will clean the valve by itself. lumen. This valve is a double gate and single seal, and the unique lower valve body slope design ensures that the inner cavity of the valve does not accumulate dust. All these features make this valve have a long service life and provide a reliable guarantee for the safe operation of your system.

Specifications

The only national standard for ceramic valves: JB/T10529-2005

Design and manufacturing standards: API6D-2008, API608-2002

Structure length standard: GB/T 12221-2005, ANSI B16.10

Connection flange standard: GB/T 9113, ANSI B16.5

Pressure temperature grade: GB/T 12224-2005, ASMEB16.34-2004

Test and inspection standard: GB/T 13927-2008API 598

Installation and use points

1. Read this instruction carefully before installation, and check the valve model, diameter and technical parameters.

2. It is strictly forbidden to weld the flange after installing the valve, so as not to damage the valve sealing ring. The valve installation distance reserved by the pipeline should be appropriate, and gaskets should be added on both sides of the flange.

3. The center of the two pipelines and the center of the valve diameter should be kept coaxial, and the flange surface should be flat, and no large deflection of the flange surface is allowed to ensure the clamping and normal operation of the valve. Tighten bolts should be uniform and symmetrical.