Slide valve, slide valve adjustment mechanism and screw compressor

A slide valve, comprising a static slide valve and a moving slide valve, wherein the static slide valve is fixedly installed in a slide valve cavity, and the static slide valve is provided with an axially-penetrating valve hole;

• wherein a plurality of bypass holes communicating with the valve hole are formed in the sidewall of the static slide valve, an exhaust port is formed in the sidewall of one end of the static slide valve;
• and the moving slide valve comprises a valve body, and the valve body is slidably arranged in the valve hole;
• wherein a limiting structure is provided between the static slide valve and the moving slide valve, and the limiting structure limits a limiting position for the sliding of the valve body towards the exhaust port along the valve hole;
• wherein the valve body opens all of the plurality of bypass holes when moving towards the exhaust port to the limiting position, and the valve body sequentially closes all of the plurality of bypass holes when moving towards a direction away from the exhaust port, and
• wherein the exhaust port is a right-angled groove provided in an outer sidewall of the static slide valve, and the exhaust port and the valve hole are isolated from each other.