Reciprocating plunger pump and its engine body, the slider crank mechanism and the slide block, the bearing seat, the crankcase upper cover and the plunger seat

A reciprocating plunger pump, comprising a plunger pump body, a plunger pump head, and a slider crank mechanism which is located inside of the plunger pump body;

• wherein the plunger pump body comprises an engine seat, a crankcase upper cover provided on the engine seat, and a bearing seat provided within the internal space formed within the engine seat of the plunger pump body and the crankcase upper cover;
• wherein the engine seat of the plunger pump comprises a bottom wall and a bottom sidewall which is integrally formed with the bottom wall and extends away from an edge of the bottom wall and away from a surface of the bottom wall;
• wherein the crankcase upper cover comprises an upper wall and an upper sidewall which extends from the upper wall and away from a surface of the upper wall;
• wherein the engine seat of the plunger pump and the crankcase upper cover are connected such that the upper sidewall and bottom sidewall are connected by a connector;
• wherein two crankshaft penetrating bores are formed through the sidewalls of the connected engine seat and crankcase upper cover;
• wherein each crankshaft penetrating bore is formed by half bores located respectively on the upper sidewall and the bottom sidewall;
• wherein the internal space formed between the engine seat of the plunger pump and the crankcase upper cover is a crankcase space which is provided with the bearing seat, the bearing seat is provided with at least one lower half bearing bore;
• the bearing seat and the crankcase upper cover are connected, and the lower half bearing bore and an upper half bearing bore which is located on the crankcase upper cover form a complete bearing bore which is a middle bearing bore;
• wherein the middle bearing bore is located in the middle of the two crankshaft penetrating bores;
• wherein the crankcase upper cover is penetrated by a plunger bore;
• wherein the slider crank mechanism includes reciprocating parts, an unsplit crankshaft, and a slide block;
• wherein the reciprocating parts contain a reciprocating parts body which is provided with a circular through bore which is an accommodation bore of the slide block;
• wherein the reciprocating parts body is provided with a guide section which is along a reciprocating motion direction with an oriented surface;
• wherein the slide block comprises a slide block body and an annular outer ring which is fitted over a peripheral region of the slide block body;
• wherein the slide block body is a split structure comprising a first section and a second section and provided with an eccentric circular bore, which bore comprises two identical half bores, which are respectively arranged on the first section and the second section, which first section and second section each have a subdivision surface;
• wherein the first section of the slide block body is provided with a first section assembly bore which is located on the subdivision surface of the first section;
• wherein the second section is provided with a through bore penetrating from the subdivision surface to a peripheral surface of the second section;
• wherein the unsplit crankshaft contains at least one crankpin;
• wherein the crankpin of the unsplit crankshaft is at least fitted over by the slide block by penetrating the eccentric circular bore, wherein the slide block is fitted into the accommodation bore of the reciprocating parts;
• wherein the unsplit crankshaft is located in a crankshaft space, wherein a corresponding crankshaft main journal and a crank arm are supported in the middle bearing bore of the bearing seat or in one of the two crankshaft penetrating bores;
• and
• wherein one end of a part of the reciprocating parts, which cooperates with the plunger pump head provided on an outer side of the plunger bore, penetrates into the plunger bore.