JPH0368575U

JPH0368575U -

Info

Publication number: JPH0368575U
Application number: JP12790389U
Authority: JP
Priority date: 1989-11-02
Filing date: 1989-11-02
Publication date: 1991-07-05

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す断面図、第２
図は本考案の要部を拡大して示す断面図、第３図
は本考案の要部を分解して示す斜視図、第４図は
本考案の他の実施例を要部を拡大して示す断面図
、第５図は従来例の要部を示す断面図である。１１……プランジヤポンプ、２８……プランジ
ヤ、３０……ポンプヘツド、３８……シール室、
３９……プランジヤシール、４０……プランジヤ
摺動孔、４１……吐出通路、４２……吸込通路、
４７……吸込管、４８……吐出管、５３……バイ
パス通路。 Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is an enlarged sectional view of the main parts of the present invention, Figure 3 is an exploded perspective view of the main parts of the invention, and Figure 4 is an enlarged view of another embodiment of the invention. FIG. 5 is a sectional view showing essential parts of a conventional example. 11...Plunger pump, 28...Plunger, 30...Pump head, 38...Seal chamber,
39...Plunger seal, 40...Plunger sliding hole, 41...Discharge passage, 42...Suction passage,
47...Suction pipe, 48...Discharge pipe, 53...Bypass passage.

Claims

[Claims for Utility Model Registration] (1) A suction passage that communicates with the suction pipe inside, a plunger sliding hole that communicates with the passage and slidably accommodates the plunger, and that communicates with the sliding hole. , and in a pump head of a plunger pump provided with a seal chamber capable of accommodating a plunger seal therein, and a discharge passage capable of communicating with the plunger sliding hole and the discharge pipe, one end of the discharge passage communicating with the discharge pipe is sealed. 1. A pump head for a plunger pump, characterized in that the pump head opens into a chamber and forms a single flow path that is continuous with the suction passage, the plunger sliding hole, the seal chamber, and the discharge passage. (2) A suction passage communicating with the suction pipe inside, a plunger sliding hole communicating with the passage and slidably accommodating the plunger, and communicating with the sliding hole and accommodating the plunger seal inside. In the pump head of a plunger pump, the plunger pump is provided with a sealing chamber that can communicate with the plunger sliding hole and a discharge passage that can communicate with the plunger sliding hole and the discharge pipe, wherein the discharge passage and the seal chamber are communicated with each other through a bypass passage. A pump head for a plunger pump according to claim 1 of the patent registration claim.