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ANALYSIS OF A TRIBOTECHNICAL COUPLE OF A PERISTALTIC PUMP OPERATING ELEMENT

Abstract

Dependable operation of pumps is mostly determined by the wear resistance of two elements of the operating element - a flexible hose and a shoe. The objective of this research was to analyze different friction couples used in the operating element of peristaltic pumps. Testing was carried out using a modified friction test machine. Values of friction factor for the couples under study, wear and roughness of their surfaces, and medium temperature were obtained. The comparative analysis of the obtained data was carried out. To evaluate tribotechnical properties of material couples proposed to be used in the operating element of a pump, tests using modified friction machine SMTs-2 were carried out. The friction machine was equipped with an analog-digital converter allowing registration of friction moment values and temperature in a digitized form. The tests were performed according to the scheme “test member-roller” with roller dipping into the bath with distilled glycerin PK-94, used as a cooling-lubricating fluid in flexible hose pump units. Rollers- counter samples were made of materials intended for shoe fabrication: steel 45, deformable aluminum D16 and AB85, and anti-friction silumin AS. Test member-sample was cut out directly from the pump hose in the form of a lengthwise segment. Pump hose materials are synthetic rubbers SRI and SRB. It is highlighted that from the perspective of less friction and heating loss which is critical for efficient operation of peristaltic pump units, steel 45 can be recommended for fabrication of shoes running together with artificial rubber hoses. It also should be noted that while fabricating such shoes it is advisable to obtain roughness of the working face similar to the roughness obtained during testing since this can reduce early hose damage during operating element break-in process.

About the Authors

N. A. Krylov
St. Petersburg State Polytechnic University Peter the Great
Russian Federation


V. V. Medvedev
St. Petersburg State Polytechnic University Peter the Great
Russian Federation


A. D. Breki
St. Petersburg State Polytechnic University Peter the Great
Russian Federation


K. V. Petrovskaya
St. Petersburg State Polytechnic University Peter the Great
Russian Federation


A. E. Gvozdev
Tula State Lev Tolstoy Pedagogical University
Russian Federation


N. E. Starikov
Tula State University
Russian Federation


D. A. Provotorov
SME «Vulkan-TM»
Russian Federation


A. N. Sergeev
Tula State Lev Tolstoy Pedagogical University
Russian Federation


E. V. Ageev
Southwest State University
Russian Federation


D. V. Maliy
Tula State Lev Tolstoy Pedagogical University
Russian Federation


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Review

For citations:


Krylov N.A., Medvedev V.V., Breki A.D., Petrovskaya K.V., Gvozdev A.E., Starikov N.E., Provotorov D.A., Sergeev A.N., Ageev E.V., Maliy D.V. ANALYSIS OF A TRIBOTECHNICAL COUPLE OF A PERISTALTIC PUMP OPERATING ELEMENT. Proceedings of the Southwest State University. 2016;(4):32-38. (In Russ.)

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ISSN 2223-1560 (Print)
ISSN 2686-6757 (Online)