3results about How to "Shortened installation length" patented technology

The utility model relates to the technical field of valves, in particular to an integrated self-filtering check butterfly valve which comprises a valve body, the valve body is of an integrated casting structure, a flow channel is arranged in the valve body, the left side of the valve body is provided with an inlet end, the right side of the valve body is provided with an outlet end, and the inlet end, the flow channel and the outlet end are communicated. A filter assembly, a check valve assembly and a butterfly valve assembly are sequentially arranged in the flow channel.

This invention relates to an electronic expansion valve, comprising a drive assembly, a screw, a valve needle, a valve seat, a bearing, and a valve needle spring. The valve seat has a fluid passage. The drive assembly drives the screw to rotate and move axially. The valve needle has an axial mounting hole inside, and its upper part has a bearing cavity to accommodate the bearing. The lower end of the screw extends into the axial mounting hole and is rotatably connected to the bearing, allowing for axial sliding. A screw retaining ring is provided at its lower end, and a screw annular protrusion is provided on its outer periphery. The valve needle spring is sleeved on the screw and confined between the screw annular protrusion and the upper end face of the valve needle. Downward movement of the screw compresses the valve needle spring through the screw annular protrusion, pushing the valve needle downward. Upward movement of the screw pushes the valve needle upward through the screw retaining ring against the bearing, thereby achieving stable axial movement of the valve needle to precisely control the opening and closing of the fluid passage. This structure achieves pure axial transmission through the bearing, effectively preventing the valve needle from rotating and vibrating with the screw. The compact layout of the valve needle spring significantly shortens the axial dimension of the valve body, improving transmission reliability and service life.

The utility model relates to the technical field of gate valves, in particular to a multifunctional gate valve which comprises a gate valve shell, a gate plate is arranged in the gate valve shell, and a valve rod used for controlling the gate plate is arranged at the upper end of the gate plate. An automatic cut-off mechanism is arranged at one end of the gate valve shell and comprises a cut-off shell, a cut-off valve seat, a cut-off valve element, an adjusting rod and a self-adaptive spring, the cut-off shell and the gate valve shell are integrally formed, and the cut-off valve seat is arranged at the end, away from the filter cartridge, in the cut-off shell; the cut-off valve element is arranged on one side of the cut-off valve seat, the adjusting rod is arranged in the cut-off valve element, the self-adaptive spring is arranged on one side of the cut-off valve element, and a cut-off sealing face is formed when the cut-off valve element is closed on one side of the cut-off valve seat.