Z644TC pneumatic ceramic double gate valve overview
Pneumatic ceramic double gate valve, also known as Pneumatic dual gate parallel gate valve or dry ash valve is a kind of ceramic gate valve. Therefore, its structure and working principle consistent with the ceramic gate valve, the opening and closing body (valve plate) by the valve stem to move the valve seat sealing surface for lifting movement, can be connected or cut off the fluid channel. When the valve is partially open, eddy current is generated on the back of the ram, easily causing erosion and vibration of the ram and easily damaging the sealing surface of the valve seat, which is difficult to repair. Usually, it is suitable for not requiring frequent opening and closing and keeping the ram full open or full Closed condition. The ceramic rail strip provided on the inner side of the bonnet and the auxiliary spring provided in the three-way valve core can effectively prevent the left and right shutters from moving against the ceramic track strip without any leakage so as to ensure that the valve body Of the normal operation, the utility model is simple in structure, easy to install and use.
Ceramic double gate valve is mainly used for dry powder material into the discharge and delivery pipe for the cut-off and connected to the media channel, so warehouse pump discharge valve, balance valve, exhaust valve, drain valve, can also be used as Pipeline switching valve and gray ash discharge valve, with good sealing performance, starting load is small, ash card and less accumulation of ash, wear resistance, long service life. Ceramic double gate valve is usually flange connection, can be divided into two manual and electric drive. Specifically, the scope of use of this series of products: 1. Power plant ash - dry ash system; 2. Concentrator - dry powder material selection, transportation; 3. Cement industry - dry powder transport, discharge; Flour mill - flour delivery pipe. 5. Other powder or small solid particles and other high wear medium delivery, because these mining media often have hard particles and fibrous dirt and other objects, the valve in the pipeline system as a hoist device, can play an excellent role .
Z644TC pneumatic ceramic double gate valve features
1. The valve has advanced design concept, which has the incomparable characteristics of the ordinary valve, as a fluid control system, effectively solve the long-standing problem can not be solved due to debris caused by the leakage of the sealing surface sealing valve damage.
2. The valve uses a spring self-sealing structure and a special type of sealing surface, so that the seal no matter in any position has always been consistent to completely scrape off the sealing surface of the residual dirt (such as sediment, welding slag and other attachments ), The sealing surface is not subject to any damage, the sealing surface of the high hardness of the corrosion-resistant alloy material, after many manufacturers proved that the structure can not only scrape the sealing surface of a variety of dirt, but also to ф5mm stainless steel electrode Cut off, without any damage to the sealing surface, work properly.
3. Because the valve spring self-sealing structure can automatically compensate for the normal wear and tear on the sealing surface, on the one hand due to a very tight leak rate of zero, on the other hand greatly enhance the service life of the valve, saving costs for the enterprise.
4. The valve uses a wedge roller switch mechanism that can lightly switch the valve, and can compensate for a small amount of leakage seal early warning device. If there is a slight leak in the valve, the valve will remain zero-leaked as long as the handwheel is tight, whereas normal valves do not have this skill.
5 due to the use of a special switching mechanism to prevent the ordinary gate due to large temperature changes, the gate stuck, but not open the phenomenon.
6. The valve at the bottom with automatic sewage system, always keep the body cavity clean, no residue.
7. The valve body is equipped with a dust-proof mechanism to ensure that the valve cavity will not be soaked in dirt, leaving the internal body failure
Z644TC pneumatic ceramic double gate valve structure characteristics
1. Valve plate, valve seat are made of toughened engineering ceramics, erosion resistance, excellent wear resistance;
2. Between the two gate plate is set a spring to the spring bi-directional flexible preload pressure to achieve self-tight seal, with low-pressure two-way seal, opening and closing process without jamming and fouling phenomenon performance;
3 valve opening and closing process, the valve plate rotates evenly with the seat run, the sealing performance durable;
4. The sealing surface in dry powder medium wear evenly in the process of frequent opening and closing, closed sealing performance, long service life;
5. The body of the valve eccentric design, when the valve plate to open the excrement material will produce material vortex, the material vortex will purge the body cavity of the jam material, and the other design of a blowing gray mouth, in order to facilitate the removal of external gas source Fouling within the valve and overhauling the valve.
Z644TC Pneumatic dual gate valve action principle
Ceramic parallel double gate valve works: With the cylinder or hand wheel to provide external power, the valve stem to move the valve plate up and down to achieve the valve opening and closing, valve opening and closing process rely on the double gate between the spring preload Is the valve plate and valve seat in close contact, to achieve sealing. Among them, pneumatic ceramic double gate valve works as follows: When the gas source from the intake port access, the valve stem to move the valve plate down, the valve closed. When the air supply from the lower air inlet, then the valve stem to move the valve plate upward, the valve open. The spring loaded between the valve plate and the valve seat always keeps the valve plate pressed against the valve seat to ensure the sealing of the valve and also allows the valve plate to move vertically. This helps to compensate for the thermal expansion and contraction of the valve parts and Can overcome any back pressure changes on the seal and prevent the particulate media from entering between the two sealing surfaces. In the opening and closing process, the valve plate can produce rotation, making the sealing surface between the grinding, polishing effect, and because of the body of the channel eccentric, open discharge material, will produce eddy current, the formation of the material will vortex clean the valve Cavity. All of these features make this valve has an extremely long service life.
