Nowadays, people have a growing demand for hot tubs. In order to meet the requirement of different customers for hot tubs, Aquaspring has designed over 100 hot tub models. But at the same time, some customers have reported that we have too many models and it takes too long to choose the right hot tubs. In order to help you choose the right spa models more quickly, we have specially classified these hot tubs into different categories. You can choose from the categories of number of seater, luxury models and economy models. If you want to looking for a suitable hot tub more conveniently, you can please also send us your needs and we have professional sales representatives to recommend models and provide solutions for you. outdoor spa tubs,outdoor jacuzzi spa,best hot tubs,acrylic outdoor spa,outdoor jacuzzi Foshan Nanhai Halo Sanitary Ware Co., Ltd. , https://www.halobathroom.com
Conceptual Classification of Oil Seal Vacuum Pump and Its Structural Features
Oil-sealed vacuum pump: It is the use of oil sealed between the various moving parts of the gap, reducing the harmful space of a rotating varactor vacuum pump. This pump is usually equipped with gas ballast, it is also known as gas-town vacuum pump. According to its structural characteristics are divided into the following five types. 1, rotary vane vacuum pump: rotor with a certain eccentricity in the pump housing and pump housing fixed surface close to the surface, the rotor slot with two (or more) rotary vane, when the rotor rotation spin Slides reciprocate along their radial grooves and are always in contact with the inner wall of the pump housing. This vane rotates with the rotor to divide the pump chamber into several variable volumes. Rotary vane vacuum pump is a low vacuum pump. It can be used alone or as a foreline pump for other high or ultra-high vacuum pumps. Rotary vane pump for small and medium-sized pump, the product has been series. Rotary vane pump has a single-stage and two-stage, generally made more than two-stage, in order to obtain a higher degree of vacuum. Most of the rotary vane pump is a single working chamber structure, commonly used two radial vane, but also useful three inclined vane. Through-vane vacuum pump also has applications. 2, slide valve vacuum pump: outside the eccentric rotor is equipped with a slide valve, the rotor rotates the slide valve slide along the wall and the inner wall of the pump, the slide valve stem in the upper part of the slide valve slide in the slide, and the The pump chamber is divided into two variable volumes. Sliding valve vacuum pump suction principle and rotary vane pump similar, but the two different structures. Sliding valve vacuum pump is the use of slide valve body to change the suction chamber volume, it is called the spool pump. 3, the fixed-piece vacuum pump: pump housing equipped with an inner rotor near the eccentric rotor, the pump housing is equipped with a rotor surface is always in contact with the radial vane, when the rotor rotates, the vane can slide up and down Divide the pump chamber into two variable volumes. Fixed-chip vacuum pumping speed smaller, a single, two-stage, two-stage pump ultimate vacuum up to 10-1Pa. Pump structure is simple, long service life and easy maintenance, but because of its performance than rotary vane pump, so few have been production and application. 4, trochoidal vacuum pump: In the pump chamber eccentric equipped with a trocar-shaped rotor, which along the pump cavity wall rotation and the pump chamber is divided into two variable volume. Pump dynamic balance is good, so the pump running more stable, vibration is also small, speed can be increased, you can do small size, pumping speed, suitable for the development of large pumping speed mechanical vacuum pump. As the suction pipe is short and thick, help to improve pumping speed under low pressure. Therefore, in the low pressure range (1 ~ l00Pa) trochoidal pump pumping speed curve is better than the slide valve pump. Trochoidal pump rotor and pump body is a pair of conjugate tooth-shaped meshing movement, so the exhaust gas contains a certain amount of dust and small particles are not sensitive. The trochoid pump to adapt to the higher temperature of the work environment, the temperature control device can make the pump chamber to maintain a high temperature (ie trochoidal heat pump), used to extract a large amount of condensable water vapor. 5, multi-chamber rotary vane vacuum pump: In a pump casing mounted in parallel by the same motor-driven multiple independent studio rotary vane vacuum pump.