JPH0479977U

JPH0479977U -

Info

Publication number: JPH0479977U
Application number: JP12182090U
Authority: JP
Priority date: 1990-11-22
Filing date: 1990-11-22
Publication date: 1992-07-13

Description

[Brief explanation of the drawing]

第１図は本考案の１実施例を示すものでイはプ
ランジヤーポンプのネツクブツシユの構造を示す
斜視図で、ロはネツクブツシユの縦断面図である
。第２図は竪型プランジヤーポンプの機構概略を
説明するための縦断面図、第３図はプランジヤー
の軸封装置を構成するスタツフイングボツクスと
その上端部、アツパークロスヘツドとプランジヤ
ーシヤフトとの連結部を示す縦断面図である。１……クランク室、２……シリンダ、３……吸
入弁、４……吐出弁、５……プランジヤー、５′
……プランジヤーシヤフト、６……クランクシヤ
フト、７……コネクチングロツド、８……クロス
ヘツド、９……サイドロツド、１０……アツパー
クロスヘツド、１１……連結ボルト、１２……締
着ナツト、１３，１４……球面座、１５……テレ
スコーピングパイプ、１６……締付ナツト、１７
……スタツフイングボツクス、１８……グランド
パツキン、１９……吸入側マニホールド、２０…
…吐出側マニホールド、２２……防食シールリン
グ、２４……ビス、ＲＳ……リング状スリツト、
Ｓ……縦スリツト、ＮＢ……ネツクブツシユ（本
考案例）、ＮＢｏ……ネツクブツシユ（従来例）
。 FIG. 1 shows one embodiment of the present invention, in which A is a perspective view showing the structure of a neck bush of a plunger pump, and B is a longitudinal sectional view of the neck bush. Fig. 2 is a vertical sectional view for explaining the mechanism of the vertical plunger pump, and Fig. 3 shows the stuffing box and its upper end, the upper crosshead, and the plunger shaft, which constitute the shaft sealing device of the plunger. FIG. 1...Crank chamber, 2...Cylinder, 3...Suction valve, 4...Discharge valve, 5...Plunger, 5'
... Plunger shaft, 6 ... Crankshaft, 7 ... Connecting rod, 8 ... Cross head, 9 ... Side rod, 10 ... Upper cross head, 11 ... Connection bolt, 12 ... Tightening nut, 13, 14... Spherical seat, 15... Telescoping pipe, 16... Tightening nut, 17
...Stuffing box, 18...Gland packing, 19...Suction side manifold, 20...
...Discharge side manifold, 22...Anti-corrosion seal ring, 24...Screw, RS...Ring-shaped slit,
S...Vertical slit, NB...Next button (example of the present invention), NBo...Next button (conventional example)
.

Claims

[Scope of utility model registration request]

In a vertical plunger pump, the bottom of the inner wall surface is made into a tapered surface that widens toward the end, and at an arbitrary midpoint in the longitudinal direction of the inner wall surface in the neck bushing disposed at the lowest end of the stuffing box that seals the plunger. A vertical plunger pump characterized in that a ring-shaped slit is formed, and vertical slits extending from the ring-shaped slit to the lower end of the inner wall surface are formed at appropriate intervals in the circumferential direction of the inner wall surface.