Pointer electroscope pointer electroscope pointer is not flexible or open angle is small, first check whether the bearing screw is too tight, whether the shaft tip can move freely, dust and dirt inside the bearing will also hinder the pointer swing. The bearing here is actually a shallow socket with a drill at the end of the bearing screw. If the inside is not smooth enough, it should be polished when the dirt is removed, or a suitable drill bit can be held in the bearing to improve its smoothness. The shaft tip is rusty and should be wiped clean. The hands are made of thin aluminum sheets with a slightly lower end that naturally hangs down the holder when there is no charge. If the lower end is too heavy, its opening angle is small under the same charge, but when the lower end is very light, the top and bottom feet will be upside down; when the upper and lower ends are exactly the same, the balance will occur.
The light weight of the lower end of the pointer affects the sensitivity of the electroscope. The adjustment can be done in two ways: one is to stick a small piece of paper on the upper end of the pointer, adjust the size of the paper to maximize the opening angle, and not reverse it; the second is to apply varnish on the upper end. Or paint pieces (dry paint, shellac), it is necessary to make the two electroscopes have the same angle of the pointer under the same electric quantity, in order to adapt to the inspection of the equipotential body, it is recommended to use the method of sticking paper, because the paper is increased or decreased. Convenience. When the pointer can't be close to the bracket, pay attention to the upper, middle, and lower points of the pointer. It may not be in a straight line. Generally, when the upper end is to the right, the lower end will be off the bracket to the left. Adjust the upper end slightly to the left, so that the lower end of the pointer is close to the bracket. Of course, it should not be over-adjusted to avoid affecting the sensitivity. If the insulator is damaged or cracks occur, replace the insulator. Refer to the method of reforming the foil electroscope. Pointed conductors, pincushion conductors, and spherical conductors are also called electrical appliances. The conductor itself generally does not cause any malfunction unless it is rusted or shaped. The conductor is required to be plated cleanly. If there is rust, the blade can be used to remove the rust marks and varnish. The surface of the conductor after repair can not be rough, otherwise the weak charge will run away. The insulation of the pillars is good and can be bonded or replaced after damage.
Impeller normally applied in the centrifugal pumps.
Impeller is a rotating component equipped in the Pump Housing, help to transfer to energy from the motor that drives the pump to the fluid being pumped by accelerating the fluid outwards from the center of rotation.
QFAP supply various kinds of impellers to all over the world, main of our customers are from Europe, North America, Japan and Southeast of Asia.
Materials: grey Iron, ductile iron, steel castings, aluminum die castings, etc.
Surface treatment: painting, zinc plating, passivation, nickel plating, anodizing, polishing, etc.
Heat treatment: according to customer`s requirement.
QFAP have specialized in producing high precision Agriculture Parts more than 10years, Because of the long term cooperation, we could supply our customers not only the products but also our recommendation on the designs to saving costs.
Boat Impeller,Fan Impeller,Oil Pump Impeller,Blower Impeller
SHAOXING QIFENG AUTO PARTS CO., LTD. , https://www.sxqfap.com