SU909294A1

SU909294A1 - Peristaltic pump

Info

Publication number: SU909294A1
Application number: SU802915689A
Authority: SU
Inventors: Вячеслав Тарасович Ларин; Анатолий Матвеевич Хохлов; Михаил Исаевич Шишков
Original assignee: Специальное конструкторское бюро биологического приборостроения АН СССР
Priority date: 1980-03-12
Filing date: 1980-03-12
Publication date: 1982-02-28

Description

Изобретение относится к насосостроению, касается перистальтических насосов и может найти применение в медицине, биологии, фармакологии и других областях народного хозяйства для перекачки различных текучих сред.The invention relates to a pump engineering industry, relates to peristaltic pumps, and may find application in medicine, biology, pharmacology and other areas of the national economy for pumping various fluids.

Известен перистальтический насос, содержащий шланг, установленный в корпусе на прижимном основании с опорами, ротор с двумя роликами, взаимодействующими через шланг с основанием, и пережимающий механизм, снабженный взаимодействующим со шлангом подвижным упором с приводом от ротора [ 1 ].Known peristaltic pump containing a hose mounted in a housing on a clamping base with supports, a rotor with two rollers interacting through a hose with a base, and a pinch mechanism equipped with a movable stop interacting with the hose driven by the rotor [1].

Недостатком известного насоса является относительная сложность конструкции из-за сложности механизма привода подвижного упора.A disadvantage of the known pump is the relative complexity of the design due to the complexity of the drive mechanism of the movable stop.

Цель изобретения — упрощение конструкции.The purpose of the invention is to simplify the design.

Указанная цель достигается тем, что основание выполнено в виде двух параллельных плоских прямолинейных пружин, установленных таким образом, что расстояние между ними меньше диаметра описывающей окружности ротора, и закрепленных одним кон2 цом в корпусе, а другим — на подвижном упоре.This goal is achieved by the fact that the base is made in the form of two parallel flat straight-spring springs installed in such a way that the distance between them is less than the diameter of the rotor describing circle and fixed at one end in the housing and the other at the movable stop.

Подвижный упор снабжен регулируемым ограничителем перемещения.The movable stop is equipped with an adjustable travel stop.

На фиг. 1 представлен насос; на фиг. 2 — 5 сечение А—А на фиг. 1.In FIG. 1 shows a pump; in FIG. 2 to 5, section A — A in FIG. 1.

В корпусе 1 выполнены опоры 2. На опорах 2 установлено пружинное' основание, выполненное в виде двух параллельных плоских прямолинейных пружин 3. На пружинах 3 размещен шланг 4. В корпусе 1 ус¹⁰ тановлен также ротор 5 с двумя роликами 6, взаимодействующими через штанг 4 с основанием — пружинами 3. Насос снабжен перемещающим механизмом для шланга 4, выполненным в виде неподвижного 7 и подвиж15 ного 8 упоров, между которыми зажат шланг 4. Неподвижный упор 7 снабжен регули руемым механизмом 9 перемещения. Подвиж ный упор 8 снабжен направляющими 10.Supports 2 are made in the housing 1. On the supports 2 there is a spring base made in the form of two parallel, flat, straight spring 3. On the springs 3 there is a hose 4. In the housing 1, the whisker ¹⁰ also has a rotor 5 with two rollers 6 interacting through the rods 4 with the base - springs 3. The pump is equipped with a moving mechanism for the hose 4, made in the form of a fixed 7 and movable 8 stops, between which the hose 4 is clamped. The fixed stop 7 is equipped with an adjustable movement mechanism 9. The movable stop 8 is provided with guides 10.

При вращении ротора 5 ролики 6 периодически пережимают шланг 4, обкатываются ²⁰ по нему и перемещают перекачиваемую среду к потребителю. Пока ролики 6 не воздействуют на шланг 4, он пережат упорами 7 и 8, что исключает обратный ток перекачиваемой среды. При взаимодействии роликов 6 со шлангом 4 после пережима последнего ро-_ лики 6 воздействуют на пружины 3, выгибая их. Выгибаясь, пружины 3 оттягивают подвижный упор 8 от неподвижного упора 7, освобождая шланг 4 от пережима его этими упорами. При этом перекачивается _sсреда, перемещаемая роликами 6, свободно проходит по шлангу 4 к потребителю.When the rotor 5 is rotated, the rollers 6 periodically squeeze the hose 4, run on it ²⁰ and move the pumped medium to the consumer. While the rollers 6 do not act on the hose 4, it is pinched by the stops 7 and 8, which eliminates the reverse current of the pumped medium. In the interaction of the rollers 6 with the hose 4 after clamping the last rollers 6 act on the springs 3, bending them. Bending, the springs 3 pull the movable stop 8 from the fixed stop 7, freeing the hose 4 from pinching it with these stops. When this is pumped _s medium moved by the rollers 6 freely passes through the hose 4 to the consumer.

После сбега роликов б со шланга 4 пружины 3 выпрямляются, подвижный упор 8 возвращается на место, пережимая совместно с неподвижным, упором 7 шланг 4. Для ю регулирования производительности насоса при помощи регулируемого механизма .9 перемещают неподвижный упор 7. При этом пружинам 3 сообщается деформация (прогиб), величина которой определяет длину дуги контакта роликов 6 со шлангом 4 и, следо- ¹⁵вательно, дозу перекачиваемой среды, вытесненную к потребителю за половину оборота ротора 5.After the rollers b are run off from the hose 4, the springs 3 are straightened, the movable stop 8 returns to its place, squeezing the hose 4 together with the fixed stop 7. To adjust the pump performance using the adjustable mechanism .9, the stationary stop 7 is moved. (deflection), the magnitude of which determines the length of the arc of contact rollers 6 and the hose 4, ¹⁵ sledo- quently, the dose of the pumping medium, to the consumer for the displaced half revolution of the rotor 5.

За счет выполнения основания для шланга 4 в виде двух параллельных плоских прямолинейных пружин 3, установки их нё указанном выше расстоянии друг от друга и закреплении пружин 3 по концам в корпусе 1 и на подвижном упоре 8, упрощается конструкция насоса, так как при этом основа ние выполняет одновременно роль привода неподвижного упора 8.Due to the implementation of the base for the hose 4 in the form of two parallel flat straight spring 3, installing them not above the distance from each other and securing the springs 3 at the ends in the housing 1 and on the movable stop 8, the design of the pump is simplified, since the base simultaneously performs the role of the drive fixed stop 8.

Claims

The invention relates to pump engineering, peristaltic pumps, and can be used in medicine, biology, pharmacology, and other areas of the national economy for pumping various fluids. A peristaltic pump is known, containing a hose mounted in a housing on a pressure base with supports, a rotor with two rollers that interact through a hose with a base, and a pinching mechanism equipped with a movable stop interacting with the hose 1. A disadvantage of the known pump is relative complexity of the design due to the complexity of the mechanism for driving the movable stop. The purpose of the invention is to simplify the design. This goal is achieved by the fact that the base is made in the form of two parallel flat rectilinear springs, installed in such a way that the distance between them is smaller than the diameter of the rotor circumference, and fixed at one end in the housing, and at the other end on the movable stop. The movable stop is provided with an adjustable travel stop. FIG. 1 shows a pump; in fig. 2 is a section A-A in FIG. 1. The casing 1 has supports 2. The supports 2 have a spring base, made in the form of two parallel flat rectilinear springs 3. A spring hose is placed on the springs 3. The casing 1 also has a rotor 5 with two rollers 6 interacting through rods 4 with the base - springs 3. The pump is equipped with a moving mechanism for the hose 4, made in the form of a fixed 7 and movable 8 stops, between which the hose 4 is clamped. The fixed station 7 is equipped with an adjustable movement mechanism 9. The movable stop 8 is provided with guides 10. When the rotor 5 rotates, the rollers 6 periodically pinch the hose 4, roll around it and mix the pumped medium to the consumer. While the rollers 6 do not act on the hose 4, it is clamped by the stops 7 and 8, which excludes the reverse current of the pumped medium. When the interaction of the rollers 6 with the hose 4 after pressing the last po. The faces 6 act on the springs 3, bending them. Bending, the springs 3 deflect the movable stop 8 from the fixed stop 7, freeing the hose 4 from pinching it with these stops. At the same time, the medium is pumped, mixed by the rollers 6, freely passes through the hose 4 to the consumer. After the rollers bounce from the hose 4, the springs 3 are released, the movable stop 8 returns to its place, the hose 4 is clamped together with the fixed stop 7. To adjust the performance with the help of an adjustable mechanism .9 the fixed stop 7 is moved. the deformation (deflection), the magnitude of which determines the length of the arc of contact of the rollers 6 with the hose 4 and, consequently, the dose of the pumped medium displaced to the consumer half a turn of the rotor 5. By making the base for the hose 4 in the form of two parallel flat rectilinear springs 3, installing them at a distance from each other and locking the springs 3 at the ends in the housing 1 and at the movable stop 8, simplifies the design of the pump, since the base simultaneously performs the role of driving the fixed stop 8 The claims 1. Peristaltic pump, containing a hose mounted in a housing on a spring base with supports, a rotor with two rollers, interacting through a hose with a base, and pinching mechanism. equipped with a movable stop interacting with the hose, driven by a rotor, characterized in that, in order to simplify the construction, the base is made in the form of two parallel flat straight springs, installed in such a way that the distance between them is smaller than the diameter of the rotor circumference and fixed by one the end in the case, and the other - on a movable support.

2. A pump according to claim 1, characterized in that the movable stop is provided with an adjustable travel stop. Sources of information taken into account in the examination 1. US Patent No. 4142845, cl. 417-477, 1979.