Hoe de levensduur van een pneumatische kogelkraan te verlengen

Pneumatische kogelkraan omvat kleplichaam, kogel, klepsteel en pneumatische actuator. Op de klepsteel is een beugel aangebracht tussen het klephuis en de pneumatische aandrijving. De ventielsteel tussen de beugel en de klepsteel is achtereenvolgens van onder naar beneden voorzien van een pakkingwartel, een pakking en een pakkingkussen. Een schuifbus is aangebracht tussen de klepsteel en het kleplichaam, het ene uiteinde van het klephuis is verbonden met een keramisch klepdeksel en de bol is een bol gemaakt van volledig keramisch sinteren. Het andere uiteinde van het klephuis is voorzien van een flens die integraal is gevormd met het klephuis. Tussen de kogel en het klephuis is een klepzitting geïnstalleerd en de klepzitting en de boostercompensatieveer vormen een lineaire afdichting. De onderkant van het klephuis is voorzien van een gat, een bodemdeksel is in het gat geïnstalleerd, de binnenste staaf van het bodemdeksel is verbonden met de bol en er is een pakking aangebracht tussen de binnenste stang van het bodemdeksel en het klephuis.


Bij het verlengen van de pneumatische klep moet rekening worden gehouden met de volgende factoren:

1. Before use, use water to clean the pipeline and the overflow part of the valve body to prevent residual iron filings and other debris from entering the valve body cavity.

2. When the ball valve is closed, there is still a part of the medium remaining in the valve body, and it also bears a certain pressure. Before overhauling the ball valve, close the shut-off valve in front of the ball valve, open the ball valve that needs to be overhauled, and completely release the internal pressure of the valve body. If it is an electric ball valve or a pneumatic ball valve, the power supply and air supply should be disconnected first.

3. Generally, PTFE is used as the sealing material for soft-sealed ball valves, and the sealing surface of hard-sealed ball valves is made of metal surfacing. If the pipeline ball valve needs to be cleaned, care should be taken to prevent damage to the sealing ring and leakage during disassembly.

4. When disassembling and assembling the flanged ball valve, the bolts and nuts on the flange should be fixed first, then all the nuts should be tightened slightly, and finally fixed firmly. If the individual nuts are forcibly fixed first, and then other nuts are fixed, the uneven surface between the flange surfaces will cause damage or rupture of the cushion surface, resulting in the leakage of the medium from the valve flange.

5. If the valve is cleaned, the solvent used must not conflict with the accessories to be cleaned and not corrode. If it is a gas-specific ball valve, it can be cleaned with gasoline. Other parts can generally be washed with reclaimed water. When cleaning, it is necessary to thoroughly clean the residual dust, oil and other attachments. If it cannot be cleaned with clean water, it can be cleaned with alcohol and other cleaning agents on the premise of not damaging the valve body and parts. After the cleaning is completed, wait for the cleaning agent to completely evaporate before assembling.

6. If there is a slight leakage at the packing during use, you can tighten the valve stem nut slightly until the leakage stops, but do not continue to tighten.

7. Long-term storage in the open air will cause the valve body and components to corrode and cannot be used normally. The ball valve should be protected from rain, water, and moisture when stored, and the flange cover should be tightly closed. Valves stored for more than 12 months should be re-tested when used to ensure stable performance.

The control device of the pneumatic ball valve includes a pneumatic bracket, a cylinder, a pin and a sliding sleeve. The pneumatic bracket of the product is connected to the cylinder; the cylinder is provided with a piston rod, the pneumatic bracket is provided with a pneumatic connection handle, and one end of the pneumatic connection handle of the product is provided with an ellipse. The other end is provided with a square groove, the square groove of the product is fixed with the valve rod in the valve body; the pin and the sliding sleeve of the product pass through the oval groove, and are fixed with the piston rod through the circlip provided at the bottom. The beneficial effects of the pneumatic ball valve are as follows: the trouble of processing parts is omitted, the packaging space is small, the raw materials are saved, and the environmental protection is strong.