CN201351639Y

CN201351639Y - Multi-stage pump with improved support

Info

Publication number: CN201351639Y
Application number: CNU2009200181302U
Authority: CN
Inventors: 李阳; 常少彬; 孙晓妍
Original assignee: YANTAI SUNSHINE PUMP CO Ltd
Current assignee: YANTAI SUNSHINE PUMP CO Ltd
Priority date: 2009-01-15
Filing date: 2009-01-15
Publication date: 2009-11-25
Anticipated expiration: 2019-01-15

Abstract

The utility model relates to a multi-stage pump with improved support which comprises a main shaft, a bearing frame, an oil ring, an end cap, a bearing gland and a cylinder roller bearing which is installed on the main shaft, wherein the main shaft is coaxially provided with a bearing inner sleeve and a bearing outer sleeve, an angular contact ball bearing is installed between the bearing inner sleeve and the bearing outer sleeve, the bearing frame is provided with an oil box and an oil-cooling cover, an oil-cooling pipe is arranged in the oil box, the bearing outer sleeve is fixedly installed on the bearing frame, one end of the bearing outer sleeve is contacted with one end surface of the end cap, and one end of the bearing inner sleeve is provided with a nut. The improved multi-stage pump increases the loading capability of the bearing, enlarges the capacity of the oil box, improves lubricating conditions of the bearing, and guarantees the working temperature of the bearing in the bearing scope, thereby solving the shaft sticking phenomenon in the operating process of the pump, and furthermore, as the bearing inner sleeve is added, the multi-stage pump has simple disassembly and convenient maintenance.

Description

A kind of multistage pump that improves support

Technical field

The utility model belongs to mechanical field, relates in particular to a kind of multistage pump that improves support.

Background technique

Original multistage pump, adopt the balancing drum balancing axial thrust, non-driven-end bearing is selected tapered roller bearing for use, because the lifting surface area of balancing drum is less, can not balance most axial force, remaining axial force is come balance by tapered roller bearing, this has just strengthened the load of bearing, causes the intensification of bearing easily, produces the phenomenon of seize, pump can not be run well, influenced normally carrying out of producing; Bearing directly is contained on the axle, and the dismounting difficulty has caused later maintenance inconvenience.

Summary of the invention

The utility model provides a kind of multistage pump that improves support, has solved the easy seize of original multistage pump and shortcoming that pump can not be run well.

The technical solution of the utility model is achieved in that a kind of multistage pump that improves support, constitute by main shaft, bearing bracket stand, disc, end cap, bearing gland and the roller bearing that is installed on the main shaft, coaxial bearing inner sleeve, the bearing outside of being equipped with is equipped with angular contact ball bearing between bearing inner sleeve, the bearing outside on the main shaft;

Bearing bracket stand is provided with fuel tank, oil cooling lid, establishes oil-cooled tube in the fuel tank;

Bearing outside is fixedly mounted on the bearing bracket stand, and bearing outside one end contacts with end cap one end face;

Bearing inner sleeve one end is established nut.

The beneficial effects of the utility model are: the multistage pump after the improvement, increased the bearing load ability, enlarged the capacity of fuel tank, improved the bearing lubrication condition, the operating temperature that has guaranteed bearing in tolerance range, thereby solved the seize phenomenon that pump occurs in running, increased bearing inner sleeve in addition, dismounting is simple, and is easy to maintenance.

Description of drawings

Fig. 1 is the utility model non-driven-end bearing modular construction schematic representation;

Fig. 2 is the connection diagram of the utility model oil-cooled tube and oil cooling lid.

Part explanation: 1, roller bearing, 2, angular contact ball bearing, 3, bearing bracket stand, 4, bearing inner sleeve, 5, disc, 6, oil-cooled tube, 7, fuel tank, 8, the oil cooling lid, 9, main shaft, 10, bearing gland, 11, end cap, 12, bearing outside.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described: a kind of multistage pump that improves support, by main shaft 9, bearing bracket stand 3, disc 5, end cap 11, bearing gland 10 and the roller bearing 1 that is installed on the main shaft 9 constitute, the coaxial bearing inner sleeve 4 that is equipped with on the main shaft 9, bearing outside 12, bearing inner sleeve 4, be equipped with angular contact ball bearing 2 between the bearing outside 12, bearing bracket stand 3 is provided with fuel tank 7, oil cooling lid 8, establish oil-cooled tube 6 in the fuel tank 7, bearing outside 12 is fixedly mounted on the bearing bracket stand 3, bearing outside 12 1 ends contact with end cap 11 1 end faces, and bearing inner sleeve 4 one ends are established nut.

The axial force that balancing drum can not balance, bearing by anti-drive end bears, the combination of angular contact ball bearing 2 and roller bearing 1 has strengthened the bearing capacity of bearing, has avoided bearing because of stressed phenomenon of generating heat greatly, in fuel tank 7, increased oil-cooled tube 6, can directly cool off the lubricant oil in the fuel tank, cooling effect is obvious, thereby avoids the seize phenomenon, increased bearing inner sleeve 25, avoided bearing to be directly installed on axle and gone up and cause the dismounting difficulty.

Claims

1, a kind of multistage pump that improves support, constitute by main shaft (9), bearing bracket stand (3), disc (5), end cap (11), bearing gland (10) and the roller bearing (1) that is installed on the main shaft (9), it is characterized in that upward coaxial bearing inner sleeve (4), the bearing outside (12) of being equipped with of main shaft (9), be equipped with angular contact ball bearing (2) between bearing inner sleeve (4), the bearing outside (12).

2, a kind of multistage pump that improves support according to claim 1 is characterized in that bearing bracket stand (3) is provided with fuel tank (7), oil cooling lid (8), establishes oil-cooled tube (6) in the fuel tank (7).

3, a kind of multistage pump that improves support according to claim 1 is characterized in that bearing outside (12) is fixedly mounted on the bearing bracket stand (3), and bearing outside (12) one ends contact with end cap (11) one end faces.

4, a kind of multistage pump that improves support according to claim 1 is characterized in that bearing inner sleeve (4) one ends establish nut.