| 摘要 |
A control valve for pouring color paste in both large amount and small amount comprises a valve body and a valve core disposed inside the valve body, where a large pump inlet/outlet, a small pump inlet/outlet, a color paste bucket inlet/outlet, and a color paste pouring outlet are disposed on the valve body. A channel is provided on the valve core, and the valve core is rotated, to enable the large pump inlet/outlet and the small pump inlet/outlet to connect to a color paste bucket or to pour color paste, where at least three connection structures as follows are comprised: (1). The large pump inlet/outlet is connected to the color paste bucket, the small pump inlet/outlet is connected to the color paste bucket, and the large pump inlet/outlet and the small pump inlet/outlet are both connected to the color paste bucket, the foregoing three manners being separate or combined. (2) The large pump inlet/outlet separately pours color paste or the large pump inlet/outlet and the small pump inlet/outlet pour color paste together, or the large pump inlet/outlet is connected to the color paste pouring outlet to pour color paste or the large pump inlet/outlet and the small pump inlet/outlet are connected together to the color paste pouring outlet to pour color paste. (3) The small pump inlet/outlet separately pours color paste or the small pump inlet/outlet is connected to the color paste pouring outlet to pour color paste. The control valve disclosed in the present invention has a compact structure and ingenious design, and an objective of pouring color paste in large amount or in small amount can be desirably achieved by rotating a valve core to a different direction. Meanwhile, an objective of cleaning a pump body and preventing drying and clogging of color paste flowing in a pipeline and color paste at a paste outlet can be achieved, and air that enters a pump body or a valve body can be further removed conveniently, thereby effectively ensuring the precision of pouring color paste. |
