SU1513199A1

SU1513199A1 - Gear pump

Info

Publication number: SU1513199A1
Application number: SU874334623A
Authority: SU
Inventors: Сергей Александрович Артишевский; Андрей Николаевич Никончук; Александр Иванович Бобровник; Анатолий Тихонович Скойбеда
Original assignee: Белорусский Политехнический Институт
Priority date: 1987-11-30
Filing date: 1987-11-30
Publication date: 1989-10-07

Abstract

Изобретение позвол ет повысить КПД и надежность шестеренного насоса в работе. Во внутренней полости 2 корпуса 1 размещены шестерни (Ш) 3, 4 с внешними зубь ми 5 и сопр женна с ними гибка Ш 6 с внутренними зубь ми 7. Разделитель (Р) установлен между Ш 3, 4 с образованием полостей 8, 9 всасывани и нагнетани . Боковые радиальные поверхности (РП) 10 Р сопр жены с внешней РП 11 вершин 12 зубьев 5. Р выполнен в виде двух элементов 14, 15 с цилиндрическими расточками 16, соединенными каналами 17 с полост ми 9. Р снабжен плавающими втулками 18 с осевыми каналами 19 и пружинами 20. Кажда втулка 18 установлена одновременно в соосных расточках 16. Пружины 20 установлены в каналах 19 с возможностью взаимодействи с торцовыми поверхност ми 21 расточек 16. На внешней РП 22 втулок 18 выполнены по ски 23 со сферической поверхностью 24. Поверхности 25 элементов 14, 15, сопр женные с РП 26 вершин 27 зубьев 7, выполнены выпуклыми. Наличие по ской 23 с поверхностью 24 обеспечивает герметизацию полостей расточек 16. 2 з.п. ф-лы, 2 ил.The invention allows to increase the efficiency and reliability of the gear pump in operation. Gears (Ø) 3, 4 with external teeth 5 are placed in the internal cavity 2 of housing 1, and their flexible connection is made of Ø 6 with internal teeth 7. A separator (P) is installed between Ø 3, 4 with the formation of suction cavities 8, 9 and pumping. The lateral radial surfaces (RP) 10 P are mated with an outer RP 11 peaks 12 of teeth 5. P is made in the form of two elements 14, 15 with cylindrical bores 16 connected by channels 17 with cavities 9. P is equipped with floating sleeves 18 with axial channels 19 and springs 20. Each sleeve 18 is installed simultaneously in coaxial boring 16. Springs 20 are installed in channels 19 with the possibility of interaction with the end surfaces of 21 bores 16. On the external RP 22 of the sleeves 18 are ski 23 with a spherical surface 24. Surfaces 25 elements 14 , 15, conjugated with RP 26 the tops of the 27 teeth 7, are made convex. The presence of 23 on a surface 24 provides sealing of the bore cavities 16. 2 Cp f-ly, 2 ill.

Description

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Изобретение относитс к машиностроению , в частности к шестеренным насосам.The invention relates to mechanical engineering, in particular to gear pumps.

Цель изобретени - повышение КПД и надежности работы.The purpose of the invention is to increase efficiency and reliability.

На фиг. 1 представлен шестеренный насос , поперечный разрез; на фиг. 2 - разрез А-А на фиг. 1.FIG. 1 shows a gear pump, cross section; in fig. 2 shows section A-A in FIG. one.

Шестеренный насос содержит корпус 1, во внутренней полости 2 которого размещены шестерни 3 и 4 с внешними зубь ми 5 и сопр женна с ними гибка шее- 10 терн 6 с внутренними зубь ми 7, установленный между шестерн ми 3 и 4 с внешними зубь ми 5 с образованием полостей 8 и 9 соответственно всасывани и нагнетани разделитель, боковые радиальные 5 разделител , поверхности 10 которого сопр жены с внешней радиальной поверхностью 11 вершин 12 зубьев 5 шестерен 3 и 4, и торцовые крышки 13, при этом разделитель выполнен в виде одинаковых элементов 14 и 15с цилиндрическими расточками 16, соединенными ка- 20 налами 17 с полост ми 9 нагнетани , и снабжен плавающими втулками 18 с осевыми каналами 19 и пружинами 20, причем кажда плавающа втулка 18 установлена одновременно в соосных цилиндрических рас- 55 точках 16 элементов 14 и 15, а пружины 20 установлены в осевых каналах 19 плавающих втулок 18 с возможностью взаимодействи с торцовыми поверхност ми 21 цилиндрических расточек 16 элементов 14 и 15 разделител , кроме того, на внеш- 30 ней радиальной поверхности 22 плавающих втулок 18 выполнены по ски 23 со сферической поверхностью 24, а поверхности 25 элементов 14 и 15 разделител , сопр женные с радиальной поверхностью 26 вершин 27The gear pump comprises a housing 1, in the internal cavity 2 of which gears 3 and 4 with external teeth 5 are placed and the associated bending of the neck is 10 turn 6 with internal teeth 7 mounted between gear 3 and 4 with external teeth 5 with the formation of cavities 8 and 9, respectively, suction and injection separator, lateral radial 5 separators, surfaces 10 of which are mated with an external radial surface 11 vertices 12 teeth 5 of gears 3 and 4, and end caps 13, while the separator is made in the form of identical elements 14 and 15s qilin 16 boring channels 17 with discharge cavities 9 and provided with floating sleeves 18 with axial channels 19 and springs 20, each floating sleeve 18 being installed simultaneously in coaxial cylindrical races of 16 elements 14 and 15, and springs 20 are installed in axial channels 19 of floating sleeves 18 with the ability to interact with the face surfaces of 21 cylindrical bores 16 of the separator elements 14 and 15, in addition, on the outer radial surface 22 of the floating sleeves 18 are ski 23 erhnostyu 24 and surface 25 of element 14 and separator 15, conjugated with a radial surface 26 vertices 27

разделител к радиальной поверхности 26 вершин 27 зубьев 7 гибкой щестерни 6. При работе шестеренного насоса рабоча жидкость высокого давлени из полости 9 нагнетани поступает в полости цилиндрических расточек 16, что обеспечивает дополнительное поджатие соответствующих поверхностей элементов 14 и 15 разделител к поверхност м 11 и 26 зубьев 5 и 7 шестерен 3, 4 и 6.the separator to the radial surface 26 of the vertices 27 of the teeth 7 of the flexible brush 6. During operation of the gear pump, the high-pressure working fluid from the injection cavity 9 enters the cavity of the cylindrical bores 16, which provides additional pressing of the corresponding surfaces of the elements 14 and 15 of the separator to the surfaces 11 and 26 of the teeth 5 and 7 gears 3, 4 and 6.

Наличие по сков 23 со сферической поверхностью 24 у плавающих втулок 18 обеспечивает герметизацию полостей цилиндрических расточек 16 при взаимном перемещении и перекосе элементов 14 и 15The presence of 23 with a spherical surface 24 of the floating sleeves 18 provides sealing of the cavities of the cylindrical bores 16 with the mutual movement and misalignment of elements 14 and 15

Claims

1. A gear pump, comprising a housing, in the internal cavity of which gears with external teeth are placed and associated with them is a flexible gear with internal teeth, mounted between gears with external teeth with the formation of suction and pressure cavities separator, lateral radial the surfaces of which are matched with the outer radial surface of the tops of the teeth of the gears, and end caps, characterized in that, in order to increase efficiency and reliability of operation, the separator is made in the form of two elements with cylindrical p From the point of interconnected channels with pumping cavities, and is provided plavayushi- E bushings with axial channels, and springs, each plavayusha sleeve installed simultaneously in coaxial 7 tsizubev flexible gear 6 are made of cylindrical bores 35 of the two elements.

convex.

Gear pump works as follows.

When the gears 3 and 4 rotate, the working fluid is caught by the teeth 5 of the gears 3 and 4 and is transferred into the interdental cavities from the suction cavity 8 to the injection cavity 9. Pre spring 20 pushes the separator elements 14 and 15 and provide a tight fit of the side radial surfaces 10 to the outer radial surface 11 of the tips of the 12 teeth 5 of the gears 3 and 4, as well as the convex surfaces 25 of the elements 14 and 15

separator

the separator to the radial surface 26 of the vertices 27 of the teeth 7 of the flexible brush 6. During operation of the gear pump, the high-pressure working fluid from the injection cavity 9 enters the cavity of the cylindrical bores 16, which provides additional pressing of the corresponding surfaces of the elements 14 and 15 of the separator to the surfaces 11 and 26 of the teeth 5 and 7 gears 3, 4 and 6.

The presence of 23 with a spherical surface 24 of the floating sleeves 18 provides sealing of the cavities of the cylindrical bores 16 with the mutual movement and misalignment of elements 14 and 15

,

Invention Formula

separator

1. A gear pump, comprising a housing, in the internal cavity of which gears with external teeth are placed and associated with them is a flexible gear with internal teeth, mounted between gears with external teeth with the formation of suction and pressure cavities separator, lateral radial the surfaces of which are matched with the outer radial surface of the tops of the teeth of the gears, and end caps, characterized in that, in order to increase efficiency and reliability of operation, the separator is made in the form of two elements with cylindrical p From the point of interconnected channels with pumping cavities, and is provided plavayushi- E bushings with axial channels, and springs, each plavayusha sleeve installed simultaneously in coaxial tsi0

s

and the springs are installed in the axial channels of the floating bushings with the possibility of interaction with the end surfaces of the cylindrical bores of the separator elements.

2. Pump according to claim I, characterized in that on the outer radial surface of the floating sleeves are made differently with a spherical surface.

3. Pump on PP. 1 and 2, characterized in that the surfaces of the elements of the separator, mating with the radial surface of the tips of the teeth of the flexible gear, are made convex.

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