Patent ID: 10865894

Abstract:
A four-way valve for a backflush filter system comprises a valve body (3) and a rotating valve core (2) having a valve rod at one end of a central shaft. A valve core port IV (16) is arranged at the other end of the central shaft of the valve core (2). Three ports are arranged in the radial direction of the valve core (2): a valve core port I (13), a valve core port II (14) and a valve core port III (15). The valve body (3) encasing the valve core (2) also has four ports. Three radial ports are respectively a valve body port I (9), a valve body port II (10) and a valve body port III (11), and the other port is an axial valve body port IV (12). By increasing the sizes of the relevant ports and sealing end surfaces, the four-way valve solves the problems that a backflush effect is affected by insufficient inflow rate during backflush of a four-way valve in the prior art, the distribution of the relative positions of three ports of the valve body is single, and sealing is difficult.