CN208749588U

CN208749588U - Without sealing MODEL VERTICAL MULTISTAGE PUMP

Info

Publication number: CN208749588U
Application number: CN201821402735.7U
Authority: CN
Inventors: 韩燕云; 李秋菊; 张丽荣; 李春颜
Original assignee: DANAI PUMPS Co Ltd
Current assignee: DANAI PUMPS Co Ltd
Priority date: 2018-08-29
Filing date: 2018-08-29
Publication date: 2019-04-16
Anticipated expiration: 2028-08-29

Abstract

The utility model relates to without sealing MODEL VERTICAL MULTISTAGE PUMP, including, axis, the axis lower part is equipped with impeller, the impeller is correspondingly arranged on guide vane, middle section is equipped with outside the impeller, the middle section top is equipped with lifting pipe, the middle pars infrasegmentalis is equipped with water absorbing section, the lifting pipe top is equipped with water exit end, is equipped with balancing drum in the water exit end, the balancing drum upper surface is respectively equipped with retaining ring and bisecting snap ring, the bisecting snap ring is fixed by retaining ring and axis, is successively arranged parts of bearings and electric machine support above the balancing drum.After water enters on the inside of water exit end from water absorbing section, due to balancing drum and water exit end gap very little, play throttling action, after water is flowed out from gap, since the baffling structure of balancing drum designs, water can be back to water exit end outside, it is flowed back in priming reservoir by return port, this completes circulations, have subtracted mechanical seal, reduce the maintenance frequency.

Description

Without sealing MODEL VERTICAL MULTISTAGE PUMP

Technical field

The utility model relates to multistage pump technical fields, and in particular to without sealing MODEL VERTICAL MULTISTAGE PUMP.

Background technique

It is fixedly connected between vertical multi-stage pump shaft top and the pump housing by sealing element, due to lift height, the big original of axial force Cause, sealing element in the case where the high-pressure extrusion and axis of interior media are mobile, often reveal by sealing element, needs to regularly replace sealing element, The maintenance frequency is increased, operating cost is increased.

Utility model content

Purpose of the utility model is to solve the above problems and provide without sealing MODEL VERTICAL MULTISTAGE PUMP, in the prior art Sealing improved, reduce seal member damage after replacement.

To solve the above-mentioned problems, the technical solution adopted in the utility model is as follows:

Without sealing MODEL VERTICAL MULTISTAGE PUMP, it is characterised in that: including axis, axis lower part is equipped with impeller, and impeller, which is correspondingly arranged on, leads Leaf, impeller outside are equipped with middle section, and middle section top is equipped with lifting pipe, and middle pars infrasegmentalis is equipped with water absorbing section, and lifting pipe top, which is equipped with, to be discharged Section, water exit end is interior to be equipped with balancing drum, and balancing drum upper surface is respectively equipped with retaining ring and bisecting snap ring, and bisecting snap ring passes through retaining ring It is fixed with axis, is successively arranged parts of bearings and electric machine support above balancing drum.

Preferably, the water outlet pars infrasegmentalis is equipped with return port.

Working principle of the utility model is:

Balancing drum is used to balancing axial thrust, and remaining axial force is undertaken by parts of bearings.The utility model eliminates machinery Sealing, is arranged to baffling form for balancing drum, plays partially liq medium back flow.When medium is by balancing drum, in balancing drum folding Under flow structure effect, medium meeting baffling flows back to pond by return port, will not thus be leaked to the external world, subtract into water exit end The maintenance frequency is lacked.

Compared with prior art, the utility model advantageous effects are as follows:

The utility model is designed by the baffling structure of balancing drum, has been subtracted mechanical seal, has been reduced the maintenance frequency, Reduce operation cost.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of balancing drum described in the utility model；

Description of symbols: axis -1, guide vane -3, middle section -4, lifting pipe -5, water absorbing section -6, water exit end -7, is put down at impeller -2 It weighs and rouses -8, retaining ring -9, bisecting snap ring -10, parts of bearings -11, electric machine support -12, return port -13.

Specific embodiment

The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear Define.

Refering to shown in Figure of description 1 and Fig. 2, no sealing MODEL VERTICAL MULTISTAGE PUMP guide vane 3, middle section 4, is pumped up water by axis 1, impeller 2 Pipe 5, water absorbing section 6, water exit end 7, balancing drum 8, retaining ring 9, bisecting snap ring 10, parts of bearings 11, electric machine support 12 form.It is multiple Impeller 2 is mounted in series on axis 1, and guide vane 3 is mounted in middle section 4, and middle section 4 is between water absorbing section 6 and lifting pipe 5, water suction Section 6 is located at bottom, and lifting pipe 5 is connected with water exit end 7, and balancing drum 8 is located in water exit end 7, passes through retaining ring 9, bisecting snap ring 10 is fixed with axis 1, and top is parts of bearings 11, and balancing drum 8 balances most of axial force, and residual axial force is by thrust bearing division Part 11 undertakes, and is that electric machine support 12 is used to connect motor above parts of bearings 11.When water enters in water exit end 7 from water absorbing section 6 Behind side, due to balancing drum 8 and 7 gap very little of water exit end, throttling action is played, after water is flowed out from gap, due to balancing drum 8 The design of baffling structure, water can be flowed back in priming reservoir back to the outside of water exit end 7 by return port 13, this completes circulation, There is no leakages, so reducing the maintenance frequency there is no need to mechanical seal.

The utility model is designed by the baffling structure of balancing drum 8, has subtracted mechanical seal, reduces maintenance frequency It is secondary, reduce operation cost.

Basic principles, main features, and advantages of the present invention has been shown and described above.Current row The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, retouching in above embodiments and description The preference of only the utility model is stated, the utility model is not limited by above-mentioned preference, is not departing from the utility model Under the premise of spirit and scope, the utility model can also have various changes and modifications, these changes and improvements both fall within practical In novel claimed range.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of without sealing MODEL VERTICAL MULTISTAGE PUMP, it is characterised in that: including axis, the axis lower part is equipped with impeller, and the impeller is corresponding It is provided with guide vane, middle section is equipped with outside the impeller, the middle section top is equipped with lifting pipe, and the middle pars infrasegmentalis is equipped with water suction Section, the lifting pipe top are equipped with water exit end, are equipped with balancing drum in the water exit end, the balancing drum upper surface is respectively equipped with lock Tight ring and bisecting snap ring, the bisecting snap ring are fixed by retaining ring and axis, are successively arranged parts of bearings above the balancing drum And electric machine support.

2. according to claim 1 without sealing MODEL VERTICAL MULTISTAGE PUMP, it is characterised in that: the water outlet pars infrasegmentalis is equipped with reflux Hole.