CN208089612U - A kind of Novel submersible double suction pump configuration - Google Patents

Abstract

The utility model provides a kind of Novel submersible double suction pump configuration, it includes pump case, impeller is equipped in the pump case, it is characterized in that, impeller is socketed on outside shaft, shaft is arranged through the pump housing, pump case both sides are connected with shaft by bearing case, shaft outer shroud is arranged with lip-type packing, bearing case inner edge is connect by lip-type packing with shaft, the outer rim of bearing case both sides and shaft forms side hollow-out parts at two, shaft external rings are arranged with mechanical seal, mechanical seal inner edge coordinates with shaft outer rim, the inner edge of mechanical seal outer rim and sealing cover coordinates；The utility model has the advantage of：Mechanical seal block media leaks into parts of bearings, and the lubrication of mechanical seal and bearing is two different media, has installed rotary shaft lip seal additional again between the two, it is ensured that two kinds of lubricant mediums will not gang up mutually；It can be used under submerged condition, the size of the unlimited pump-type of structure expands the applying working condition of double entry pump.

Description

A kind of Novel submersible double suction pump configuration

Technical field

The utility model is related to double entry pump field more particularly to a kind of Novel submersible double suction pump configurations.

Background technology

A kind of important form of the double entry pump as centrifugal pump, because it has the characteristics that lift is high, flow is big, in engineering To extensive use.The impeller of this pump-type is actually composed of two back-to-back impellers, and the flow flowed out from impeller is converged Enter in a spiral case.Double entry pump has the characteristics that the following：The single-suction (single-in let) impeller that it is equivalent to two same diameters works at the same time, Same impeller outer diameter down-off, which can increase, to be twice；It is opened in pump case level, inspection and maintenance is convenient, meanwhile, double entry pump inlet and outlet In the same direction and perpendicular to pump shaft, it is conducive to arrangement and the installation of pump and inlet and outlet pipes；The blade wheel structure of double entry pump is symmetrical, does not have There are axial force, operation more steady.

Existing double entry pump is dry type extensively using industry such as agricultural, irrigation and drainage, chemical industry, petrochemical industry, power station, mines Installation, does not have diving function, pump bearing body is dipped into the case where water can cause to leak into water.

Utility model content

The purpose of this utility model is to provide a kind of Novel submersible double suction pump configuration, breaks through the not submersible limit of double entry pump System, makes the use occasion of double entry pump wider.

To achieve the goals above, the technical solution of the utility model is：

A kind of Novel submersible double suction pump configuration, it includes pump case, and impeller is equipped in the pump case, and feature exists In the impeller is socketed on the outside of shaft, and the shaft is arranged through pump case, and both sides and the shaft of the pump case pass through Bearing case is connected, and the inside hollow out of the bearing case forms middle hollow-out parts, and bearing, the axis are equipped in the middle hollow-out parts Bearing sleeve is connected to the outside of shaft, and the external rings of the shaft are arranged with a pair of of lip-type packing, the bearing case both sides it is interior Edge is connect by lip-type packing with shaft, and the both ends of the bearing case are annularly protruded in the horizontal direction, outside the bearing The both sides of shell are connect with a sealing cover respectively, and the sealing cover is fixedly connected by fastening bolt with bearing case, described tight Fixing bolt is respectively embedded into the both sides setting of bearing case, and the both sides of the bearing case and the outer rim of sealing cover and shaft are formed Side hollow-out parts at two, also around a pair of of mechanical seal is equipped with, the mechanical seal is located at two for the outside of the shaft In a side hollow-out parts, the inner edge of the mechanical seal and the outer rim of shaft coordinate, the outer rim of mechanical seal and the inner edge of sealing cover Cooperation.

The advantages of technical solution described in the utility model, is：When entire water pump, which immerses it, to be pumped in medium, machinery Sealing can be leaked into block media in parts of bearings, and the lubrication of mechanical seal and bearing is two different media, the two it Between again installed rotary shaft lip seal additional, it is ensured that two kinds of lubricant mediums will not gang up mutually；Use environment（Diving）It cannot Difficulty when meeting is resolved, and the size of the unlimited pump-type of structure expands the applying working condition of double entry pump.

Description of the drawings

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the structural schematic diagram of the utility model middle (center) bearing shell.

Reference numeral：

1 pump case

2 impellers

3 shafts

4 bearing cases

Hollow-out parts in 5

6 lip-type packings

7 sealing covers

8 fastening bolts

9 side hollow-out parts

10 mechanical seals

11 bearings.

Specific implementation mode

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality Novel protected range.

A kind of Novel submersible double suction pump configuration is equipped with leaf as shown in Figure 1, it includes pump case 1 in the pump case 1 Wheel 2, which is characterized in that as depicted in figs. 1 and 2, the impeller 2 is socketed on the outside of shaft 3, and the shaft 3 is in the horizontal direction It is arranged through pump case 1, the both sides of the pump case 1 are connected with shaft 3 by bearing case 4, the inside of the bearing case 4 Hollow out forms middle hollow-out parts 5, is equipped with bearing 11 in the middle hollow-out parts 5, the bearing 11 is socketed on the outside of shaft 3, described The external rings of shaft 3 are arranged with a pair of of lip-type packing 6, and the inner edge of 4 both sides of the bearing case by lip-type packing 6 and turns Axis 3 connects, and the both ends of the bearing case 4 are annularly protruded in the horizontal direction, and the both sides of the bearing case 4 are close with one respectively 7 connection of capping, the sealing cover 7 are fixedly connected by fastening bolt 8 with bearing case 4, and the fastening bolt 8 is respectively embedded into The both sides of bearing case 4 are arranged.

The both sides of the bearing case 4 form side hollow-out parts 9 at two, the shaft with the outer rim of sealing cover 7 and shaft 3 3 outside is also around a pair of of mechanical seal 10 is equipped with, and the sealing medium of mechanical seal 10 is machine oil, bearing case 4 Lubricant medium is lubricating grease, it is ensured that two kinds of lubricant mediums will not gang up mutually, and the mechanical seal 10 is located at two sides In hollow-out parts 9, the inner edge of the mechanical seal 10 and the outer rim of shaft 3 coordinate, and the outer rim of mechanical seal 10 is interior with sealing cover 7 Edge coordinates.

Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new The range of each embodiment technical solution of type.

Claims (1)

1. a kind of Novel submersible double suction pump configuration, it includes pump case, and impeller is equipped in the pump case, which is characterized in that The impeller is socketed on the outside of shaft, and the shaft is arranged through pump case, and both sides and the shaft of the pump case pass through axis It holds shell to be connected, the inside hollow out of the bearing case forms middle hollow-out parts, and bearing, the bearing are equipped in the middle hollow-out parts It is socketed on the outside of shaft, the external rings of the shaft are arranged with a pair of of lip-type packing, the inner edge of the bearing case both sides It is connect with shaft by lip-type packing, the both ends of the bearing case are annularly protruded in the horizontal direction, the bearing case Both sides connect respectively with a sealing cover, the sealing cover is fixedly connected by fastening bolt with bearing case, the fastening Bolt is respectively embedded into the both sides setting of bearing case, and both sides and the outer rim of sealing cover and shaft of the bearing case form two Locate side hollow-out parts, also around a pair of of mechanical seal is equipped with, the mechanical seal, which is located at, to be located at for the outside of the shaft In two side hollow-out parts, the outer rim of the inner edge of the mechanical seal and shaft coordinates, the outer rim of mechanical seal and sealing cover it is interior Edge coordinates.