SU983316A1 - Flat lobe rotary pump - Google Patents

Description

The invention relates to a pump-structure, and in particular to rotary displacement volume displacement pumps.

A flat-pump pump is known, comprising a housing with inlet and outlet openings, rotors located inside the housing on shafts interconnected by synchronizing gears, and having profiled cams with curved side surfaces made of an elongated epicycloid and c. an external cylindrical surface with a radius R, and the center-to-center distance between the rotors A = RΫ2 11).

A disadvantage of the known pump is that when pumping viscous masses with fibrous inclusions, the latter, penetrating into the gap between the rotor and the outer cylindrical surface of the cams, as well as into a closed space bounded by the surface of one of the rotors, the curved side surface of its cam and the outer cylindrical, the surface of the cam of the other rotor, cause the pump to jam;

The aim of the invention is to expand the functionality of the pump.

This goal is achieved in that each of the surfaces of the rotors located between the curved side surfaces of the cams is made in the form of a concave cylindrical surface.

Moreover, the concave cylindrical surface of the rotor is made with a radius equal to 1,159R.

The drawing shows a pump, a cross section.

The pump comprises a housing 1 with an inlet 2 and an outlet 3, rotors 4 and 5 located inside the housing 1 on the bushes, interconnected by synchronizing gears (not shown), and having profiled cams 6 with curved side surfaces 7 made along an elongated epicycloid and with an outer 'cylindrical surface, type 8 with radius R. The rotors 4 and 5 have a concave cylindrical surface 9 between the curved side surfaces 7. of the cams 6.

The pump operates as follows.

The pumped mass during rotation of the rotors 4 and 5 is captured by the cams 6 and transferred from the inlet 2 to the outlet 3 _ of the housing 1. Due to the concave cylindrical surface 9, the fibrous inclusions do not cause jamming between the rotors 4,5 and the outer cylindrical surfaces 8 of the cams 6. Sealing - between the rotor - 5 mi-4 and 5 is carried out due to the interaction of the curved side surfaces of the cams of one of the rotors with the cams of the other rotor.

Thanks to the implementation of rotors with an indented cylindrical surface, the proposed pump can pump viscous masses with fibrous inclusions, for example, manure.

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Claims (2)

(54) FLAT-BOLEDREDNL NLSOS. . The invention relates to a pump engineering industry, namely, rotary volumetric displacement pumps. A flat-bottom pump is known, comprising a housing with inlet and outlet openings, rotors paic located inside the housing on shafts interconnected by synchronizing gears, and having shaped cams with curvilinear lateral surfaces. mi, made on, mi along the elongated epicycloid and c. external cylindrical surface with radius R, the center-to-center distance between the rotors A RY2 G1 The disadvantage of the known pump lies in the fact that when pumping into such masses with fibrous inclusions, the latter penetrate into the gap between the rotor and the outer cylindrical surface of the cams / and also into the closed space bounded by the surface of one of the rotors, the curved side surface of its cam, and the outer cylindrical surface of the cam of the other rotor, causing the pump to jam. This is an extension of the functionality of the pump. This goal is achieved by the fact that each of the surfaces of the rotors, located between the curved side surfaces of the cams, is shaped like a concave cylindrical surface. Moreover, cylindrical concave. the rotor surface is made with a radius equal to 1,159R. The drawing shows the pump, the cross-section. The pump includes a housing 1 with a bottom hole 2 and an outlet 3, rotors 4 and 5 located inside the housing 1 on, interconnected by synchronizing gears (not shown), and having profiled cams 6 with curvilinear side surfaces 7, are aligned along an extended epicycloid and with an outer cylindrical surface 8 with radius R. The rotors 4 and 5 have a concave cylindrical surface 9 between the curved side surfaces 7. of the cams 6. The pump operates as follows. The pumped mass during rotation of the rotors 4 and 5 is captured by the cams 6 and transferred from the inlet 2 to the outlet 3 of the housing 1. Due to the concave cylindrical surface 9, the fiber inclusions do not cause seizure between the rotors 4.5 and the outer cylindrical surfaces 8 cams 6. The compaction between the rotors mi-4 and 5 is carried out at the expense of wea. and the action of the curved side surfaces of the cams of one of the mouths of the rods with the cams of the other rotor. Due to the implementation of rotors with a concave cylindrical surface, the proposed pump can pump viscous masses with fibrous inclusions, such as manure. Claims 1. Flat pump, comprising a housing with an inlet and an outlet. rotors located inside the housing. on shafts, connected by synchronizing spherical profiles, and having cams with curvilinear lateral surfaces, lined epicycloid and outer surface with radiocylindrical som f, moreover, the center-to-center distance between the rotors A is distinguished, which, with a cefunctional expansion capacity, each of the surfaces of the rotors is located between the curvilinear and lateral surfaces of the cams, is made into a concave cylindrical shape surface finish. 2. The pump on P.1. about tl and h ayushchu-and and with that. that the chickpea of the cylinder has a performance of 1.159R. with a radius equal to. Sources of information taken into account in the examination 1. German patent F 1444, cl. 27 From 1877, S b