SU1262106A1

SU1262106A1 - Peristaltic-action pump

Info

Publication number: SU1262106A1
Application number: SU853915820A
Authority: SU
Inventors: Анатолий Юрьевич Григорьев
Original assignee: Опытно-конструкторское бюро тонкого биологического машиностроения
Priority date: 1985-05-05
Filing date: 1985-05-05
Publication date: 1986-10-07

Abstract

Изобретение относитс к насосостроению и может быть использовано дл перекачки текучих сред с высокой равномерно5 стью подачи. Цель изобретени - повышение равномерности подачи перекачиваемой среды и расширение функциональных возможностей . Опорный элемент (ОЭ) насоса, размещенный в корпусе 1, выполнен в виде гибкой ленты (ГЛ) 3 с установленным на ней эластичным шлангом 4. Механизм изменени кривизны ОЭ имеет св занные с концами ГЛ 3 тангенциальные регулируемые т ги (РТ) 5 и дополнительные радиально расположенные РТ 6, которые св заны с ГЛ 3 в ее средней части. Регулиру РТ 5 и 6, получают оптимальную форму ОЭ дл минимизации пульсаций давлени . I ил. С/) to 05 N5 О5The invention relates to pump engineering and can be used to pump fluids with a high uniformity of flow. The purpose of the invention is to improve the uniformity of the flow of the pumped medium and the expansion of functionality. The support element (OE) of the pump, housed in the housing 1, is made in the form of a flexible tape (GL) 3 with an elastic hose 4 installed on it. The mechanism for changing the curvature of the OE has tangential adjustable rods (PT) 5 connected to the ends of the GL 3 and additional radially arranged PT 6, which are associated with GL 3 in its middle part. By adjusting PTs 5 and 6, an optimal form of OE is obtained to minimize pressure pulsations. I il. С /) to 05 N5 O5

Description

Изобретение относится к насосостроению, касается перистальтических насосов и может найти применение в различных отраслях народного хозяйства для перекачки текучих сред с высокой равномерно- ₅стью подачи.The invention relates to a pump engineering concerns the peristaltic pump and can find application in various industries for pumping fluids with high flow with uniform Stu _5.

Цель изобретения — повышение равномерности подачи и функциональных возможностей.The purpose of the invention is to increase the uniformity of supply and functionality.

На чертеже представлен предлагаемый насос. ¹⁰ The drawing shows the proposed pump. ¹⁰

Насос содержит корпус 1, в котором размещен ротор с роликами 2, опорный элемет в виде гибкой ленты 3 с установленным на ней эластичным шлангом 4 и механизм изменения кривизны опорного элемен- _!5та, имеющий связанные с концами ленты 3 регулируемые тангенциальные тяги 5. Механизм изменения кривизны опорного элемента — ленты 3, снабжен также радиально расположенными дополнительными регулируемыми тягами 6, связанными с лентой 3 20 в ее средней части.The pump comprises a housing 1, in which a rotor with rollers 2 is placed, a support element in the form of a flexible tape 3 with an elastic hose 4 mounted on it, and a mechanism for changing the curvature of the support element _{! 5} , which has adjustable tangential rods connected to the ends of the tape 3. Mechanism changes in the curvature of the support element - tape 3, is also equipped with radially arranged additional adjustable rods 6 associated with the tape 3 20 in its middle part.

Регулируя тяги 5 и 6 изменяют кривизну отдельных участков ленты 3, получая оптимальную форму опорного элемента для минимизации пульсаций давления. Так может быть получена, например, форма опорного ²⁵элемента, состоящая из трех сопряженных участков, из ^которых средний В¹ АВ имеет профиль дуги окружности, заданный углом 2л/К и радиусом п = го+ 26, а входной СВ выходной В’С¹ участки имеют профили с ₃₀плавным увеличением радиуса кривизны г₂= D 2г где К — количество роликов ротора;By adjusting the rods 5 and 6, the curvature of individual sections of the tape 3 is changed, obtaining the optimal shape of the support element to minimize pressure pulsations. Thus, for example, the shape of the supporting ²⁵ element can be obtained, consisting of three conjugate sections, of which the middle B ¹ AB has a circular arc profile defined by an angle 2l / K and a radius n = r + 26, and the input CB output B'C ¹ sections have profiles with ₃₀ smooth increase in the radius of curvature g ₂ = D ₂ g where K is the number of rotor rollers;

го — радиус окружности, описываемой ₃₅вращающимся ротором;go - the radius of the circle described by ₃₅ rotating rotor;

— толщина стенки эластичного шланга;- wall thickness of the elastic hose;

D — безразмерный параметр, характеризующий степень пережатия шланга 4, зависящий от углового положения ролика на опор ном элементе и изменяющийся в пределах от 0 до 1.D is a dimensionless parameter characterizing the degree of clamping of the hose 4, depending on the angular position of the roller on the support element and varying from 0 to 1.

Заданный таким образом профиль опорного элемента позволяет существенно повысить равномерность подачи перекачиваемой среды за счет приближения скорости обратного всасывания к постоянной величине независимо от углового положения ролика 2 на входном и выходном участках опорного элемента. При этом выбег ролика 2 со шланга 4, который приводит к падению величины мгновенной подачи, компенсируется ее увеличением при движении роликов 2 по криволинейному выходному участку В'С¹. Аналогично набегание ролика 2 на шланг 4 компенсируется снижением подачи при движении роликов по криволинейному входному участку СВ. В процессе работы насоса форма профиля опорного элемента может быть скорректирована.The profile of the support element set in such a way can significantly increase the uniformity of the pumped medium supply due to the approach of the reverse suction speed to a constant value regardless of the angular position of the roller 2 at the input and output sections of the support element. In this case, the run-out of the roller 2 from the hose 4, which leads to a drop in the value of the instantaneous feed, is compensated by its increase when the rollers 2 move along the curved output section B'C ¹ . Similarly, the run-in of the roller 2 on the hose 4 is compensated by a decrease in feed when the rollers move along the curved inlet section of the CB. During operation of the pump, the profile shape of the support element can be adjusted.

Форму цилиндрической расточки корпуса 1, сопрягаемой в точках N и N¹ с профилем опорного элемента — ленты 3, целесообразно выпол нять с радиусом г₃= г ι + Зг, а форму направляющих пазов корпуса 1, в которых уложен шланг 4, — с радиусом г₄— =r₃-cos^.The shape of the cylindrical bore of the housing 1, mating at points N and N ¹ with the profile of the supporting element - the tape 3, it is advisable to carry out with a radius r ₃ = r ι + Зг, and the shape of the guide grooves of the housing 1, in which the hose 4 is laid, with a radius g ₄ - = r ₃ -cos ^.

Claims

The invention relates to pump engineering, KacaevcH peristaltic pumps, and can be used in various industries for pumping fluids with high flow uniformity. The purpose of the invention is to improve the uniformity of supply and functionality. The drawing shows the proposed pump. The pump includes a housing 1 in which a rotor with rollers 2 is placed, a support element in the form of a flexible tape 3 with an elastic hose 4 installed on it and a mechanism for changing the curvature of the support element, having adjustable tangential rods 5 connected to the ends of the belt 3 the support element — the tape 3 — is also provided with radially arranged additional adjustable arms 6, associated with the tape 3 in its middle part. Adjustments 5 and 6 change the curvature of individual sections of the belt 3, obtaining the optimum shape of the support element to minimize pressure pulsations. Thus, for example, the form of the support element can be obtained, consisting of three conjugate sections, of which the middle AB AB has a circular arc profile defined by the angle 2L / K and the radius G | Go + 26, and input SV output VS areas have profiles with a smooth increase in the radius of curvature, + D2r where K is the number of rotor rollers; Go is the radius of the circle described by the rotating rotor; b - wall thickness of the elastic hose; D is a dimensionless parameter characterizing the degree of clamping of the hose 4, depending on the angular position of the roller on the support element and varying from 0 to 1. The profile of the support element specified in this way significantly increases the uniformity of the pumped medium by increasing the rate of reverse suction to a constant value regardless of the angular position of the roller 2 at the inlet and outlet portions of the support element. At the same time, the run out of the roller 2 from the hose 4, which leads to a drop in the instantaneous feed rate, is compensated by its increase as the rollers 2 move along the curvilinear output section of the aircraft. Similarly, the rolling of the roller 2 to the hose 4 is compensated for by a decrease in feed when the rollers move along the curvilinear inlet section ST. During operation of the pump, the shape of the profile of the support element can be adjusted. The shape of the cylindrical bore of the housing 1 matched at the points N and N with the profile of the support element — the tape 3 — is advisable to be made with a radius Гз г i -4- Зg, and the shape of the guide grooves of the housing 1 in which the hose 4 is laid, - with a radius of G4 Gz-C05. The invention includes a peristaltic pump comprising a housing in which a rotor with rollers is placed, a support element B in the form of a flexible tape with an elastic hose installed on it and a mechanism for changing the curvature of the support element having adjustable tangential rods connected to the ends of the belt, characterized in that in order to increase the uniformity of flow and the functionality of the pump, the mechanism for changing the curvature of the support element is provided with radially arranged additional, adjustable rods connected to the belt in its middle part.