JP3158689U - Check valve assembly - Google Patents

Abstract

Provided is a check valve assembly that can be easily assembled and removed and can be easily miniaturized. The check valve on both the discharge side and the suction side is integrated and incorporated, and a pipe attachment port and a flange for fixing the entire pump are also integrated. [Selection] Figure 1

Description

  The present invention relates to a check valve used in a hand pump used for pumping liquid.

  In general, a piston-type hand pump requires one check valve on each of the suction side and the discharge side, but each must be provided on the suction and discharge lines. Processing such as drilling is required.

  The discharge side check valve must be installed by drilling the side wall of the pump cylinder, which is troublesome. Also, the check valve mounted outside the cylinder protrudes from the pump body, and often becomes a hindrance when the pump is mounted.

  A check valve assembly having a flange for mounting the suction side and the discharge side check valve in an integrated manner, and mounting the pipe mounting port and the entire pump on the lid of the container containing the liquid is produced.

  The suction side and discharge side pipes may be attached to the respective attachment ports provided in the check valve assembly, and the cylinder side wall need not be drilled.

  Since only the check valve assembly can be attached to the pipe and the container, the cylinder is not required to be piped and can be easily assembled and removed. Moreover, it becomes easy to reduce in size.

  A discharge side pipe and a check valve are provided in the block that also serves as a mounting flange. A cylinder is provided on the upper side of the block so that a cylinder can be connected to the lower side and a valve chamber having a suction-side check valve on the lower side. A pipe line is provided in the block so that the suction side valve chamber and the piston chamber in the cylinder communicate with each other.

  Embodiments will be described below with reference to the accompanying drawings. The discharge valve block 1 is provided with a discharge side check valve 2, a discharge pipe mounting port 4, and a flange portion mounting hole 10. A cylinder mounting screw 16 is provided at the upper part, and a suction side valve body mounting screw 17 is provided at the lower part. A check valve assembly is configured by attaching the suction side valve body 6 to the suction side valve body mounting screw 17.

  By assembling the cylinder 11 to the cylinder mounting screw 16 of the discharge valve block 1, the pump and its pipe line are configured. The entire pump is fixed to the container lid 19 by screwing it to the container lid 19 through the flange portion mounting hole 10 of the discharge valve block 1.

  When the piston 12 is pulled upward in such a state, the volume of the piston chamber 13 increases, and the liquid in the liquid container 18 flows into the piston chamber 13 through the suction side valve chamber 7 and the communication conduit 5. Next, when the piston 12 is pushed down, the liquid in the piston chamber 13 flows out to the discharge pipe 14 through the communication conduit 5 and the discharge side valve chamber 8.

  The discharge pipe 14 and the suction pipe 15 may be of arbitrary shapes attached to the respective attachment ports 4 and 9, and the connection of the check valve assembly including the pump and the pipe composed of the cylinder 11 and the piston 12 is performed. Only one cylinder mounting screw 16 is required.

  Sectional view showing structure of check valve assembly and conceptual diagram of pump part, piping, and liquid container joined to it

DESCRIPTION OF SYMBOLS 1 Discharge valve block 2 Discharge side check valve 3 Discharge pipe 4 Discharge piping attachment port 5 Communication pipe 6 Suction side valve body 7 Suction side valve chamber 8 Discharge side valve chamber 9 Suction piping attachment port 10 Flange part attachment hole 11 Cylinder 12 Piston 13 Piston chamber 14 Discharge piping 15 Suction piping 16 Cylinder mounting screw 17 Suction side valve body mounting screw 18 Liquid container 19 Lid

Claims (2)

A check valve assembly that integrates a suction-side check valve, a discharge-side check valve, a suction-side pipe mounting port, a discharge-side piping mounting port, and a pump mounting flange. A hand pump using the check valve assembly according to claim 1.

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