CN208185044U - A kind of self-balanced multiple-stage centrifugal pump centre Wear-resistance flow regulator - Google Patents
A kind of self-balanced multiple-stage centrifugal pump centre Wear-resistance flow regulator Download PDFInfo
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- CN208185044U CN208185044U CN201820296290.2U CN201820296290U CN208185044U CN 208185044 U CN208185044 U CN 208185044U CN 201820296290 U CN201820296290 U CN 201820296290U CN 208185044 U CN208185044 U CN 208185044U
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- alloy
- axle sleeve
- self
- intermediate axle
- centrifugal pump
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Abstract
A kind of self-balanced multiple-stage centrifugal pump centre Wear-resistance flow regulator, including pump shaft, the pump shaft sleeve is equipped with intermediate first intermediate axle sleeve and the second intermediate axle sleeve, the intermediate axle sleeve of described first is provided with the first stop pin close to the end face of the second intermediate axle sleeve, alloy sheath neck bush is set between the intermediate axle sleeve of described first and the second intermediate axle sleeve and positioned at pump shaft surface, the alloy sheath neck bush outer rim is set with intermediate alloy set, the intermediate alloy set outer rim is set with alloy housing, the alloy housing outer rim is set with outer jointing jacket, the outer jointing jacket outer rim is set with outer throat bushing, the alloy housing and outer jointing jacket is limited by alloy jacket gland.The self-balanced multiple-stage centrifugal pump of the utility model uses inside and outside alloy sheath as intermediate throttling set, keeps intermediate gap smaller, restriction effect is more preferable, and the service life is longer.
Description
Technical field
The utility model relates to arrive centrifugal multistage pump multiple centrifugal pump field, it is wear-resisting to be related specifically to a kind of self-balanced multiple-stage centrifugal pump centre
Throttling set.
Background technique
Centrifugal multistage pump multiple centrifugal pump is widely used in the fields such as chemical industry, petroleum, and centrifugal multistage pump multiple centrifugal pump pressure difference is big, and it is better that lift is high
Balancing axial thrust generallys use impeller and arranges back-to-back, centre setting nockbush.Weight of the nockbush as centrifugal multistage pump multiple centrifugal pump
Component part is wanted, the stability and safety of pump shaft operation are affected.Due between the high speed rotation of pump shaft, with static bushing
Fluid makees complicated movement, and streaming flow will play a supporting role for pump shaft in gap at this time, while can also produce to pump shaft
Raw corresponding fluid force, and the fluid force under different gap size also can be different, and then influence the critical of pump shaft
Revolving speed.When pump shaft rotary speed working is when critical speed and its neighbouring revolving speed, shafting vibration is violent, seriously affects multistage centrifugal pump machine
The safety of group and operator, it is therefore necessary to prevent such happen.
MD type self-balanced multiple-stage centrifugal pump is usually used in coal mine underground water drainage, makes due to using the method for being arranged symmetrically impeller
Obtain axial force automatic balancing.This has created reverse impeller and positive impeller intermediate pressure are poor (the 1/2 of outlet pressure).MD type pump
Structure shown in FIG. 1 is generally used, using intermediate throat bushing and intermediate restrictor sleeve, due to consolidating in the sewage of underground containing a small amount of
Body particle, there are also a small amount of sands, and intermediate throttling service using life is caused to shorten.
Therefore, it is badly in need of improving in view of the above technical problems.
Summary of the invention
The purpose of the utility model is to overcome shortcomings in the prior art.
The utility model is realized in this way:
A kind of self-balanced multiple-stage centrifugal pump centre Wear-resistance flow regulator, including pump shaft, it is characterised in that: the pump shaft sleeve
It is set equipped with intermediate first intermediate axle sleeve and the second intermediate axle sleeve, the intermediate axle sleeve of described first close to the end face of the second intermediate axle sleeve
It is equipped with the first stop pin, is set with alloy sheath between the intermediate axle sleeve of described first and the second intermediate axle sleeve and positioned at pump shaft surface
Neck bush, the alloy sheath neck bush outer rim are set with intermediate alloy set, and the intermediate alloy set outer rim is set with alloy
Housing, the alloy housing outer rim are set with outer jointing jacket, and the outer jointing jacket outer rim is set with outer throat bushing, described
Alloy housing and outer jointing jacket are limited by alloy jacket gland.
Further, the alloy housing is provided with the second stop pin.
Further, the outer throat bushing and alloy jacket gland are bolted.
The utility model obtain the utility model has the advantages that
The self-balanced multiple-stage centrifugal pump of the utility model uses inside and outside alloy sheath as intermediate throttling set, makes centre
Gap is smaller, and restriction effect is more preferable, and the service life is longer.
Detailed description of the invention
Fig. 1 is structural schematic diagram in the prior art；
Fig. 2 is the structural schematic diagram of the utility model；
In figure: 1, the first intermediate axle sleeve, the 2, first stop pin, 3, intermediate alloy set, 4, alloy sheath neck bush, in 5, second
Between axle sleeve, 6, outer throat bushing, 7, alloy housing, 8, outer jointing jacket, the 9, second stop pin, 10, alloy jacket gland, 11, pump shaft.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
A kind of self-balanced multiple-stage centrifugal pump centre Wear-resistance flow regulator, including pump shaft 11, it is characterised in that: the pump shaft
11 are set with intermediate first intermediate axle sleeve 1 and the second intermediate axle sleeve 5, and the intermediate axle sleeve 1 of described first is close to the second intermediate axle sleeve 5
End face be provided with the first stop pin 2, between the intermediate axle sleeve 1 of described first and the second intermediate axle sleeve 5 and be located at 11 table of pump shaft
Surface cover is equipped with alloy sheath neck bush 4, and 4 outer rim of alloy sheath neck bush is set with intermediate alloy set 3, the intermediate alloy
It covers 3 outer rims and is set with alloy housing 7,7 outer rim of alloy housing is set with outer jointing jacket 8,8 outer rim of outer jointing jacket
It is set with outer throat bushing 6, the alloy housing 7 and outer jointing jacket 8 and passes through the lid limit of alloy casing pressure 10；The alloy housing
7 are provided with the second stop pin 9；The outer throat bushing 6 and alloy jacket gland 10 is bolted.
Working principle: self-balanced multiple-stage centrifugal pump rotates under the drive of motor, to liquid work done, increases its energy
Add, thus make to need the liquid of quantity by suction pit via the inlet segment of pump, positive impeller, guide vane, middle section, water exit end level
Water outlet, coupling tube, secondary inlet segment, anti-impeller, return guide vane, water exit end water-exit vertically mouth after, endlessly by liquid
It sends out, the self-balanced multiple-stage centrifugal pump of the utility model uses inside and outside alloy sheath as intermediate throttling set, makes between centre
Gap is smaller, and restriction effect is more preferable, and the service life is longer.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model, and the available prior art of each component part being not known in the present embodiment adds
To realize.
Claims (3)
1. Wear-resistance flow regulator among a kind of self-balanced multiple-stage centrifugal pump, including pump shaft, it is characterised in that: the pump shaft suit
There are intermediate first intermediate axle sleeve and the second intermediate axle sleeve, the intermediate axle sleeve of described first is arranged close to the end face of the second intermediate axle sleeve
There is the first stop pin, is set in alloy sheath between the intermediate axle sleeve of described first and the second intermediate axle sleeve and positioned at pump shaft surface
Bushing, the alloy sheath neck bush outer rim are set with intermediate alloy set, and the intermediate alloy set outer rim is set with outside alloy
Set, the alloy housing outer rim are set with outer jointing jacket, and the outer jointing jacket outer rim is set with outer throat bushing, the conjunction
Golden housing and outer jointing jacket are limited by alloy jacket gland.
2. Wear-resistance flow regulator among a kind of self-balanced multiple-stage centrifugal pump according to claim 1, it is characterised in that: described
Alloy housing be provided with the second stop pin.
3. Wear-resistance flow regulator among a kind of self-balanced multiple-stage centrifugal pump according to claim 1, it is characterised in that: described
Outer throat bushing and alloy jacket gland be bolted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820296290.2U CN208185044U (en) | 2018-03-04 | 2018-03-04 | A kind of self-balanced multiple-stage centrifugal pump centre Wear-resistance flow regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820296290.2U CN208185044U (en) | 2018-03-04 | 2018-03-04 | A kind of self-balanced multiple-stage centrifugal pump centre Wear-resistance flow regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208185044U true CN208185044U (en) | 2018-12-04 |
Family
ID=64439846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820296290.2U Expired - Fee Related CN208185044U (en) | 2018-03-04 | 2018-03-04 | A kind of self-balanced multiple-stage centrifugal pump centre Wear-resistance flow regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208185044U (en) |
-
2018
- 2018-03-04 CN CN201820296290.2U patent/CN208185044U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181204 Termination date: 20200304 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |