Fluorine plastic pump using mechanical seal 11 big misunderstanding

1, the greater the spring compression, the better the sealing effect? In fact, it is not, the spring compression is too large, the friction vice may wear sharply, instantaneous burning. Excessive compression will cause the spring to lose the ability to adjust the movable ring end face, seal failure.

2, fluoroplastic pump ring seal is the tighter the better? In fact, the dynamic ring sticker is very tight is harmful, so that one is to intensify the wear between the sealing ring and sleeve, early leakage. Secondly, increase the dynamic ring axial adjustment, mobile resistance, in the frequent changes in working conditions can not be adjusted in time. Third, the spring is over-fatigued, easy to break. Fourth, the dynamic ring seal deformation, affecting the sealing effect.

3, fluoroplastic pump static ring seal is the tighter the better? The static ring seal is basically in a static state, the sealing effect is better, but too tight is harmful. First, the static ring seal excessive deformation, affecting the sealing effect. Second, the static ring material is mostly graphite, generally brittle, easy to rupture by excessive force. Thirdly, it is difficult to install and disassemble, and easy to damage the static ring.

4, fluoroplastic pump impeller lock mother the tighter the better? Mechanical seal leakage is generally between the sleeve and the shaft. It is generally believed that the leakage between the shafts of chemical industry pumps is that the lock mother of the impeller is not locked, but in fact there are many reasons for the leakage between the shafts, such as the failure of the liner between the shafts, offset, and there are foreign objects between the shafts.

5, the new must be better than the old? In contrast, the use of new mechanical seals is better than the old, but in the case of new mechanical seals of different quality and material selection, the larger the fit size error, the more it will affect the sealing effect.

6, rather than not disintegrate, rather than disintegrate? If the mechanical seal leakage, although the repair is being stepped up, but the seal may not actually be damaged. Adjust the shell, properly adjust the seal can be eliminated leakage.

7, material selection misunderstanding: fluorine plastic pump mechanical seal needs to choose the material compatible with the pump medium. Improper selection may result in a chemical reaction between the sealing material and the medium, resulting in leakage or reduced sealing performance.

8, installation error: the installation needs to ensure the correct installation of mechanical seals. This includes the correct tightening torque, the correct position of the seal, and the cleanliness and flatness of the sealing surface. Incorrect installation may lead to poor sealing performance or premature failure of the pump.

9, maintenance misunderstanding: fluoroplastic pump mechanical seals in the use of the process requires regular maintenance, including checking the sealing environment is clean, lubrication and seals are damaged or worn. Neglecting maintenance may lead to shorten the life of the pump seal or leakage problems.

10, operating conditions misunderstanding: in the use of fluoroplastic pumps, need to comply with its operating conditions, including temperature, pressure and other parameters range. Operation beyond the design conditions may cause damage to the mechanical seal, affecting its sealing performance.

11, leakage treatment misunderstanding: if the pump mechanical seal leakage, need to take the right measures. Improper handling may lead to more serious damage to the seal or other safety issues.

In short, the use of fluoroplastic pump mechanical seals need to be strictly in accordance with the design requirements for selection, installation, maintenance and operation to ensure its normal operation and long-term reliability.