CN2348171Y

CN2348171Y - Self-priming pump

Info

Publication number: CN2348171Y
Application number: CN 98223784
Authority: CN
Inventors: 应让东
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-21
Filing date: 1998-04-21
Publication date: 1999-11-10
Anticipated expiration: 2008-04-21

Abstract

The utility model relates to a self-sucking pump, which comprises a pump body, a bearing body, a pump shaft, an impeller, an end cover, a bearing and mechanical seal. Steps which are used for limiting a bearing location are arranged in the bearing body; the limiting steps are positioned at one side of the mechanical seal. Because the steps in the bearing body are arranged at one side of the mechanical seal, the utility model can be more convenient in the processes of manufacture and installation. In manufacturing processes, the manufacture can be conveniently completed to enhance work efficiency. Because the outer surface of the bearing body is provided with reinforcing rods, materials can be saved. Semicircular small convex blocks which are provided with openings are extended at the connecting point of the bearing body and the pump body, which can save materials and can reduce the weight of the complete machine.

Description

Self-priming pump

The utility model relates to the water pump field, particularly a kind of self-priming pump.

At present, self-priming pump generally comprises: parts such as the pump housing, bearing support, pump shaft, impeller, end cap, bearing, mechanical seal, inherent end cap one side of bearing support is provided with the step that is used to limit bearing, in installation process, need earlier pump shaft to be packed into bearing support then two bearings install respectively from the both sides of bearing support; In maintenance process, need split out the wherein bearing of a side earlier, pump shaft could be split out then, bring inconvenience to work.Because the bearing support surface of internal cavity has certain requirement to machining accuracy, step is in end cap one side, and the processing inner chamber also needs from both sides processing, and has brought inconvenience to processing.The tube wall of bearing support is thicker, needs more material, adopts general bolt to be connected design with pump housing joint on bearing support, also needs more material, makes manufacture cost higher.

The purpose of this utility model is: provide a kind of manufacturing maintenance convenient, but difficulty of processing is low and the self-priming pump of economical with materials.

In order to reach the foregoing invention purpose, the utility model is achieved through the following technical solutions:

A kind of self-priming pump comprises the pump housing, bearing support, pump shaft, impeller, end cap, bearing, mechanical seal, is provided with the step that is used to limit the position of bearings in bearing support, and described limited step is positioned at bearing support near mechanical seal one side.

The bearing support outer surface is provided with stiffening rib.

On bearing support, extend to the semicircle small lugs of band perforate with the bolt joint of the pump housing.

Reaching the purpose of this utility model key point is: the position of limited step is mechanical seal one side.

Advantage of the present utility model is: because the step in the bearing support is located at mechanical seal one side, can earlier parts such as bearing be loaded on earlier on the pump shaft in making installation process, the bearing support of packing in the lump then in maintenance process, can split out two bearings in the lump.Because the step in the bearing support is located at mechanical seal one side, in course of working, because finishing of needing in the inner chamber that bearings mounted position just can conveniently process in the same side increased work efficiency greatly.Because the bearing support outer surface is provided with stiffening rib, the bearing body wall can be done thinly, and do not influence the intensity of bearing support, can economical with materials, extend to the semicircle small lugs of band perforate on the bearing support with pump housing joint, also can economical with materials, alleviate complete machine weight.

For clearer explanation the utility model, be elaborated below in conjunction with accompanying drawing:

Fig. 1 is a complete machine structure schematic representation of the present utility model.

Fig. 2 is the structural representation of bearing support of the present utility model.

Fig. 3 is the structural representation of the bearing support in the existing self-priming pump.

Fig. 4 is the side view of bearing support of the present utility model.

As shown in Figure 1 and Figure 2: the pump housing 1 is connected with bearing support 2, is provided with pump shaft 7 in the bearing support 2, and bearing 6, mechanical seal 4 are housed on the pump shaft 7, is provided with end cap 8 in the bearing support port.In bearing support 2, be positioned at mechanical seal 4 places one side and be provided with limited step 5.Be used for the same side that bearings mounted inner chamber is positioned at limited step 5 in the bearing support, and the inner chamber bore of bearing support is not less than the bore of the pump shaft elder generation insertion end of loading onto bearing, make self-priming pump in installation process, can on pump shaft, install the some bearings that need earlier, the bearing support of packing in the lump then; Split out in the process in maintenance and also can split out in the lump easily.Increase work efficiency greatly.In course of working, owing to need bearings mounted position to be in limited step the same side, that can conveniently process finishes.The bearing body wall is thinner, can economical with materials.

As shown in Figure 3: the limited step 5 of the bearing support 2 in the existing self-priming pump near end cap one side, is unfavorable for installing and maintenance between two bearings of need dress.Bearing body wall 3 is thicker, and is big to the materials demand amount.

As shown in Figure 4, on bearing support, be provided with stiffening rib 9 among the figure, because stiffening rib arranged, can do bearing support thinly and do not influence intensity, economical with materials.On bearing support, extend to the semicircle small lugs 10 of band perforate with the bolt joint of the pump housing, also can economical with materials, reduce cost.

Claims

1, a kind of self-priming pump comprises the pump housing, bearing support, pump shaft, impeller, end cap, bearing, mechanical seal, is provided with the step that is used to limit the position of bearings in bearing support, it is characterized in that: described limited step is positioned at bearing support near mechanical seal one side.

2, self-priming pump according to claim 1 is characterized in that: the bearing support outer surface is provided with stiffening rib.

3, self-priming pump according to claim 1 is characterized in that: the semicircle small lugs that extends to the band perforate on bearing support with pump housing joint.