Patent ID: 8342205
Filing Date: 2013-01-01
Classification: F16K,Y10T

Abstract:
1. A slide type valve comprising: a fixed flowpath forming member, the fixed flowpath forming member having a first end surface and a first flowpath formed of at least one flowpath, one end of the first flowpath being opened at the first end surface; an attachment member, the attachment member having a housing hole at a part of the attachment member facing the first end surface, the attachment member being attached to said fixed flowpath forming member from a side of the first end surface; a movable flowpath forming member, the movable flowpath forming member having an external shape substantially coinciding with a shape of the housing hole, said movable flowpath forming member being housed in the housing hole so as to be slidable in a direction perpendicular to the first end surface, said movable flowpath forming member additionally having a second end surface facing the first end surface in a parallel manner and a second flowpath formed of at least one flowpath; a slidable sealing member, the slidable sealing member being disposed between the first end surface and the second end surface, the slidable sealing member being slidable both on the first end surface and on the second end surface, the slidable sealing member having a first seal sliding surface being in slidable contact with the first end surface, a second seal sliding surface being in slidable contact with the second end surface, and a third flowpath formed of at least one flowpath one end of which is opened at the first seal sliding surface and an opposite end of which is opened at the second seal sliding surface; a spring member, the spring member pressing said movable flowpath forming member so that the second end surface of said movable flowpath forming member is tightly pressed against the second seal sliding surface of said slidable sealing member; and an actuator, the actuator rectilinearly moving said slidable sealing member between an original position and a predetermined position; wherein a communication pattern among the first flowpath, the third flowpath, and the second flowpath is set according to a position of said slidable sealing member, and wherein said fixed flowpath forming member is provided with a first base flowpath to be connected to a first base port and a first sample flowpath to be connected to the first sample port, both of the first base flowpath and the first sample flowpath serving as the first flowpath; said movable flowpath forming member is provided with a second base flowpath to be connected to a second base port and a second sample flowpath to be connected to a second sample port, both of the second base flowpath and the second sample flowpath serving as the second flowpath; said slidable sealing member is provided with a third flowpath capable of communicating with the first base flowpath and communicating with the second base flowpath, whereas the slidable sealing member is provided with another third flowpath capable of communicating with the first sample flowpath and communicating with the second sample flowpath; and when said slidable sealing member is slid by actuator driving, the first sample flowpath and the second sample flowpath stop communicating with each other, whereas the first base flowpath and the second base flowpath are connected together and communicate with each other through the another third flowpath located between the first base flowpath and the second base flowpath.