HORIZONTAL INTERNAL GEAR PUMP

• Main Authors: ISHII TAKUYA, HATTORI KEI
• Format: Patent
• Language: English; Japanese
• Published: 20.08.2015
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; WEAPONS

PROBLEM TO BE SOLVED: To provide a horizontal internal gear pump which is manufacturable at a low cost, and high in a safety factor in a function.SOLUTION: A horizontal internal gear pump 1 has: a trochoid 4 in which a suction-side capacity chamber in which an inner rotor 3 having a plurality of outer teeth is rotatably accommodated in an outer rotor 2 having a plurality of inner teeth in an eccentric state in a state that the outer teeth are engaged with the inner teeth, and which sucks liquid between the inner teeth and the outer teeth, and a discharge-side capacity chamber for discharging the liquid which is sucked into the suction-side capacity chamber are formed; a liquid suction nozzle 9 which is extended non-vertically with respect to a trochoid rotating face, and whose tip is immersed in a liquid sump 18; a pump casing 5 in which a recess 5a for accommodating the trochoid is formed; and a pump cover 6 for blocking the recess. A suction cover 8 having a liquid suction nozzle 9 is fixed to the pump casing 5, and the liquid suction nozzle 9 and the suction cover 8 are integrally molded by injection-molding a resin composition. 【課題】低コストで製造可能であり、かつ、機能面での安全率も高い横型内接歯車ポンプを提供する。【解決手段】横型内接歯車ポンプ１は、複数の内歯を有するアウタロータ２内に、複数の外歯を有するインナロータ３が、外歯が内歯に噛み合い、かつ、偏心する状態で回転自在に収容され、内歯と外歯との間に、液体を吸入する吸入側容積室と、この吸入側容積室に吸入した液体を吐出する吐出側容積室が形成されるトロコイド４と、トロコイド回転面に対して非垂直方向に延設されて先端を液体溜め１８に浸漬させた液体吸入ノズル９と、トロコイドを収容する凹部５ａが形成されたポンプケーシング５と、該凹部を閉塞するポンプカバー６とを有し、ポンプケーシング５に液体吸入ノズル９を有する吸入カバー８が固定され、液体吸入ノズル９と吸入カバー８とが樹脂組成物の射出成形により一体に成形されている。【選択図】図３