| 摘要 |
PROBLEM TO BE SOLVED: To obtain a specified plunger pump for a pouring liquid container, by forming a valve body of a suction valve and a delivery valve to make an appropriate, rational, and integral material by use of an elastically deformable flexible material. SOLUTION: A sequential and conical valve plate 3 provided with a tapered suction valve 4 at the upper part and a tapered delivery valve 5 at the lower part are integrally connected at the middle part, at the upper end of a cylindrical body 2 by use of an elastically deformable flexible material. A cylinder 8 opened at both upper and lower faces is inserted water-tightly in the vertical external cylinder 6 in which a suction pipe 26 is extended down from the lower end and a nozzle is projected from the front face. A delivery passage 9 connecting the lower end of the cylinder to the nozzle and a suction passage 10 connecting the suction pipe 26 to the lower end in the cylinder 8, are formed between the cylinder 8 and the external cylinder 6. The plunger 7 is inserted in the cylinder 8 from the upper side so as to freely and reciprocally slide and a sequential suction valve 11 and delivery valve 12 is provided by use of a valve member at the lower end in the external cylinder. |
