UA139359U - SLEEVE PUMP LINING - Google Patents

Abstract

The lining of the slurry pump contains the lining of the front cover of the pump housing, the lining of the rear cover of the pump housing, the lining of the suction made of elastomeric material. The connection surface between the lining of the front cover of the pump housing and the lining of the suction is made in the form of a truncated cone with an angle of 10-25 degrees. The surface of the connection between the lining of the rear cover of the pump housing and the armor plate is made in the form of a truncated cone with an angle of 3-15 degrees. The smaller diameter of the cut cone of the suction lining is 2-7% larger than the smaller diameter of the cut cone of the front cover lining. The smaller diameter of the cut cone of the armor disc lining is 2-7% larger than the smaller diameter of the cut cone of the back cover lining.

Description

The useful model belongs to mechanical engineering, namely to pump engineering, in particular to the design of submersible pumps for pumping slurries, and can be used in mining, chemical, metallurgical and other industries.

An analogue of the useful model is the lining of slurry pumps (patent of Ukraine Mo 85848 C2 IPK

ЕО40 29/42 dated 10.03.2009) in the form of an insert, which includes at least two parts that can be connected together in an assembled lay, is made of elastomeric material and contains annular flanges on each of its sides. The disadvantage of the analogue is that increased wear occurs in the joints of the lining under the action of the abrasive pulp.

The closest analog of a useful model is the lining of slurry pumps (patent KO Mo 2449175 C1 MPK 040 29/44 dated 22.12.2010), made of elastomers, containing the lining of the front cover, the lining of the rear cover, the lining of the suction and the lining of the rear armored disc, which are mounted pre-compressed spiral springs that provide pressure on the elastomer volume to increase its wear resistance.

The disadvantage of the closest analogue is that the compression of the elastomer occurs only on one side of the spiral spring, which increases the wear resistance of the elastomer, and the stretching of the elastomer occurs on the other side of the spring, which reduces its wear resistance. In addition, in the practical implementation of such a design, there are great complications of installing a spiral spring in the volume of the elastomer.

The useful model is based on the task of increasing the wear resistance of the elastomer lining of slurry pumps, especially in the places of its connection.

The problem is solved by the fact that in the lining of the slurry pump, which includes the lining of the front cover of the pump housing, the lining of the rear cover of the pump housing, the lining of the suction made of elastomeric material, according to the useful model, the connection surface between the lining of the front cover of the pump housing and the lining the suction is made in the form of a truncated cone with an angle of 10-25 degrees, and the connection surface between the lining of the rear cover of the pump housing and the armored disk is made in the form of a truncated cone with an angle of 3-15 degrees, and the diameter of the truncated cone of the suction lining is 2- 7 965 more than the smaller diameter of the cut cone of the lining of the front cover, and the smaller diameter of the cut cone of the lining of the armored disc by 2-7 95 more than the smaller diameter of the cut cone of the rear lining

From the cover

According to a useful model, the linings of the front and rear covers of the pump housing are made in such a way that when the pump housing is disassembled, their connecting flanges protrude above the metal housing by a distance equal to 20-5095 of the thickness of the lining at the point of connection.

In the entire volume of the elastomeric lining, elastic highly elastic deformation is ensured with the corresponding strengthening, which is triggered by abrasive impact on the elastomer.

This effect is achieved due to the fact that forces are provided at the joints of the lining elements that compress the elastomer over the entire volume. These forces occur in the case when the connection surface between the lining of the front cover of the pump housing and the suction lining is made in the form of a truncated cone with an angle of 10-25 degrees, and the connection surface between the lining of the rear cover of the pump housing and the armor disc is made in the form of truncated cone with an angle of 3-15 degrees, and the smaller diameter Orutvs. of the cut cone of the suction lining. by 2-7 95 more than the smaller diameter of the adutlpk. of the truncated cone of the lining of the front cover, and the smaller diameter of the truncated cone of the lining of the armored disc andYafutsd. by 2-7 96 more than the smaller diameter of the truncated cone Ofugzk lining of the back cover. At the same time, the linings of the front lining of the front cover and the back cover of the pump housing are made in such a way that, when the pump housing is disassembled, their connecting flanges protrude above the metal housing by a distance B equal to 20-50 95 of the thickness of the linings of the front and rear covers at the point of connection.

Unlike the closest analogue, after connecting the metal parts of the pump housing to each other in the places of conical and flange connections, forces arise that compress the lining, which leads to elastic deformation of the elastomer throughout the entire volume. The latter ensures increased wear resistance of the lining against the influence of abrasive pulp.

The useful model is explained by the drawings, where it is presented: in Fig. 1 - a cross section of the slurry pump; in Fig. 2 - the place of connection of the slurry pump housing on the flanges in disassembled form; in Fig. 3 - the place of connection of the slurry pump housing and suction in disassembled form; in Fig. 4 - the place of connection of the slurry pump housing and the armored disk in disassembled form.

The slurry pump liner includes the pump casing front cover liner 1 with flange connection 2 and cone connection 3, the pump casing rear cover liner 4 with flange connection 5 and cone connection 6, suction liner 7 with cone connection connection 8, the lining of the armored disk 9 with the conical connection 10. The linings are placed in the front cover of the metal casing of the pump 11 with the suction 12 and in the rear cover of the metal casing of the pump 13 with the armored disk 14.

The slurry pump liner works as follows.

After placing the lining of the front cover 1 in the front cover of the metal case of the pump 11, the flange connection 2 protrudes above the metal case 11 at a distance equal to 20-5095 from the thickness of the lining. At the same time, after placing the lining of the back cover 4 in the back cover of the metal casing of the pump 13, the flange connection 5 protrudes above the metal casing 13 for a distance equal to 20-50 95 from the thickness of the lining. During the connection of the front 11 and rear 13 pump covers, the protruding part of the flange connection 2 and the flange connection 5 are compressed together, which leads to elastic deformation in the volume of the elastomer. During the connection of the lining of the front cover 1 with the lining of the suction 7, due to the fact that the smaller diameter of the conical connection 8 of the lining of the suction 7 by 2-7 95 is greater than the smaller diameter of the conical connection From the lining of the front cover 1, an elastic elastomer deformation. Similarly, when connecting the lining of the rear cover 4 with the lining of the armored disc 9, due to the fact that the smaller diameter of the conical joint 10 of the lining of the armored disc 9 is 2-7 95 greater than the smaller diameter of the conical joint b of the lining of the rear cover 4, an elastic elastomer deformation. This helps to increase the wear resistance of the lining of the slurry pump against the influence of abrasive pulp.

The useful model can be repeatedly reproduced and used in the form of a slurry pump impeller and applied in mining, metallurgy, chemical and other industries.

List of markings on the drawings of the useful model: 1- lining of the front cover of the pump housing; 2 - flange connection of the lining of the front cover;

C - conical connection of the lining of the front cover; 4 - lining of the back cover of the pump housing; 5- flange connection of the lining of the back cover;

Zo b - conical connection of the lining of the back cover; 7 -- suction lining; 8 - conical connection of the suction lining; 9 - lining of the armored disc; 10 - conical connection of the lining of the armored disc; 11 - front cover of the metal casing of the pump; 12 - suction; 13 - rear cover of the metal pump housing; 14 - armored disc.

Claims (2)

USEFUL MODEL FORMULA 1. Slurry pump liner, which includes the front cover of the pump housing, the lining of the rear cover of the pump housing, the lining of the suction made of an elastomeric material, which is characterized by the fact that the connection surface between the lining of the front cover of the pump housing and the lining of the suction is made in the form of a cut cone with an angle of 10-25 degrees, and the connection surface between the lining of the back cover of the pump housing and the armor disc is made in the form of a truncated cone with an angle of 3-15 degrees, and the smaller diameter of the truncated cone of the suction lining is 2-7 95 larger than the smaller diameter of the truncated cone of the lining of the front cover, and the smaller diameter of the truncated cone of the lining of the armored disc is 2-7 96 larger than the smaller diameter of the truncated cone of the lining of the rear cover 2. 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