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1. 发明专利

JPS60240885A LIQUID FEED PUMP 失效
公开(公告)号：JPS60240885A
公开(公告)日：1985-11-29
申请号：JP9677784
申请日：1984-05-15
申请人： KAWASAKI HEAVY IND LTD
发明人： MATSUDA SHIYOUZOU , YAMAMOTO AKITOSHI , SHIMOMURA ATSUSHI , CHISAKA SHIROU , KOJIMA SADAMU
IPC分类号： F04B39/12 , F04B53/00 , F04C2/08 , F04C2/18 , F04C15/00 , F04C29/00
摘要： PURPOSE:To improve the durability of sliding face by coating the sliding face of one of two members slidable relatively with correspondence to rotation of input shaft with non-electrolytic nickel galvanization layer while forming the other side face with ceramic material. CONSTITUTION:A gear pump 1 will rotate a drive gear 5 and a driven gear 6 through the input shaft 14 and a coupler 11 to pressurize the low viscosity liquid sucked through suction port in a rear sideboard 4 and deliver through a delivery port. Here, coats of non-electrolytic nickel galvanization layer deposited with silicon carbide are formed onto the entire sliding face of movable members such as the gear 5, its shaft 7, the inverted gear 6, the coupler 11, etc. While each sliding face of static member such as the innercircumferential face of casing 2 facing with the gear containing section, the inner faces of both sideboards 3, 4, the innercircumferential faces of metals 8a, 8b, the outercircumferential face of the shaft 10 of driven gear 6 are made of ceramic material.

2. 发明专利

JPS59583A Gear pump 失效
标题翻译：齿轮泵
公开(公告)号：JPS59583A
公开(公告)日：1984-01-05
申请号：JP10872182
申请日：1982-06-23
申请人： Kawasaki Heavy Ind Ltd
发明人： AIMURA HISAO , CHISAKA SHIROU , MATSUDA SHIYOUZOU , YAMAMOTO AKITOSHI
IPC分类号： F04C2/12 , F04C2/08
CPC分类号： F04C2/084
摘要： PURPOSE:To increase durability of a gear pump, by preventing contact of a driving gear and a driven gear at or near the tooth end corner parts of the gears and thereby preventing seizure or wear of them by making the gears from a ceramics material and applying crowning to them. CONSTITUTION:A driving gear 6 and a driven gear 8 are made of alumina or a ceramics material such as silicon nitride and crowning is applied to them. That is, the tooth thickness of the gears 6, 8 is reduced gradually at the opposite end parts in the direction of the face width of the gears so that they are not brought into contact with each other at said parts. With such an arrangement, it is enabled to prevent breaking of the gear teeth at their tooth end corner parts 15 that has been caused by the impulsive load acted to the gears during operation of a pump. Thus, since seizure at the sliding surfaces or early wear of gears is not caused even if the gear pump is used for a fluid having a low viscosity such as water, warm water or a solvent.
摘要翻译：目的：为了提高齿轮泵的耐用性，通过防止驱动齿轮和从动齿轮在齿轮齿端角部附近接触，从而通过从陶瓷材料制造齿轮并防止其发生卡死或磨损给他们加油构成：驱动齿轮6和从动齿轮8由氧化铝制成，或者氮化硅等陶瓷材料和冠状加工。也就是说，齿轮6,8的齿厚在齿轮的表面宽度方向的相对端部处逐渐减小，使得它们在所述部件处不彼此接触。通过这样的布置，能够防止由于在泵的运转过程中对齿轮作用的脉冲负载而引起的齿端部角部15处齿轮齿的破坏。因此，即使齿轮泵用于具有低粘度的流体如水，温水或溶剂，也不会在滑动表面发生咬合或齿轮的早期磨损。

3. 发明专利

JPS57135288A THREE-GEAR TYPE PUMP 失效
公开(公告)号：JPS57135288A
公开(公告)日：1982-08-20
申请号：JP1943181
申请日：1981-02-10
申请人： KAWASAKI HEAVY IND LTD
发明人： SHIMOMURA ATSUSHI , CHISAKA SHIROU , MIYAZAKI TADASHI
IPC分类号： F04C14/00 , F04C2/14
摘要： PURPOSE:To reduce pulsation in the discharge quantity of a three-gear type pump considerably, by arranging a central gear of each gear set with a phase difference of 1/4 pitch from each other. CONSTITUTION:A central gear 13 is designed to have an odd number of teeth, so that the waveform of discharge quantity of a pump has a phase of 360/2Z (where Z is the number of teeth of the central gear 13). Resultantly, the total discharge quantity of two pumps at the outlet 10 of fluid is 360/2Z and variation in the discharge quantity is DELTAQ/2. Further, the average discharge quantity is 2QM. Therefore, the period of variation is reduced to 1/2 while variation in the discharge quantity is reduced to 1/4. Thus, it is enabled to reduce pulsation of the discharge quantity considerably.

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