CN205446051U - Horizontal centrifugal pump structure of single -stage - Google Patents
Horizontal centrifugal pump structure of single -stage Download PDFInfo
- Publication number
- CN205446051U CN205446051U CN201620145651.4U CN201620145651U CN205446051U CN 205446051 U CN205446051 U CN 205446051U CN 201620145651 U CN201620145651 U CN 201620145651U CN 205446051 U CN205446051 U CN 205446051U
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- Prior art keywords
- impeller
- bearing
- bearing housing
- centrifugal pump
- pump
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- Expired - Fee Related
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Abstract
The utility model provides a horizontal centrifugal pump structure of single -stage, belongs to the single -stage centrifugal pump of horizontal axis and makes technical field. This kind of horizontal centrifugal pump structure of single -stage includes that the pump body, impeller, pump cover, bearing housing, impeller shaft, stabilizer blade, impeller fixed knot construct and bearing clearance adjusts the structure, the tip of impeller setting impeller shaft in stretching into the pump body, be arranged in be equipped with in proper order on the shaft part of the impeller shaft of bearing housing sealed group, single -row radial ball bearing and two each other for the single row radial thrust ball bearing of positive and negative setting, impeller fastening nut is fixed the impeller with the impeller shaft key -type connection to adopt the 2nd soket head cap screw to pass impeller fastening nut and impeller shaft fixed connection, bearing clearance adjusts the structure and adopts the round nut that is located single row radial thrust ball bearing one side, be equipped with a stabilizer blade under the drive end of bearing housing, adopt set screw to be connected between stabilizer blade and the bearing housing. This centrifugal pump structure is should be simply compact, the atress is reasonable, and intensity and rigidity increase, and the deflection is little, reduce the vibration, long service life.
Description
Technical field
This utility model relates to a kind of single-stage horizontal centrifugal pump structure, belongs to single-stage horizontal centrifugal pump manufacturing technology field.
Background technology
Existing single-stage horizontal centrifugal pump is widely used in the industries such as power plant, Coal Chemical Industry, petrochemical industry, papermaking, food, has operational performance quite reliably.And the rear bearing axial restraint of original structure uses shaft block ring structure, bearing clearance to be difficult to ensure.Fore bearing single row roller bearing, Internal and external cycle separates, and is difficult to assembling, and frictional force is big, and radial clearance is big, is easily formed at impeller sagging, and impeller port ring cylindrical is prone to pump housing choma internal diameter frictional interference.The fixed form of impeller easily loosens when impeller inverts, and damages the seal member of rotor portion.Leg is fixing from bearing housing driving side end face bolt and pad, usually causes due to the reason of perpendicularity: leg and bearing housing end face bolt are time tight, with base by unreal bottom leg；With base bolt time tight bottom leg, leg and bearing housing are by unreal；It is high inconsistent with the center of bearing housing leg that both states have resulted in pump housing center, causes vibration exceeding the standard.
Summary of the invention
In order to overcome problems of the prior art, this utility model provides a kind of single-stage horizontal centrifugal pump structure, this centrifugal pump structure should the compactest, reasonable stress, intensity and rigidity increases, and deflection is little, reduces vibration, and service life is long.
The technical solution adopted in the utility model is: a kind of single-stage horizontal centrifugal pump structure, it includes the pump housing, impeller, pump cover, bearing housing and impeller axle, it also includes that leg, impeller fixed structure and bearing clearance adjust structure, the described pump housing is fixed together with pump cover, bearing housing successively, impeller is arranged on the end stretching into pump housing middle period wheel shaft, and the shaft part of the impeller axle being positioned in bearing housing is sequentially provided with black box, single-row radial ball bearing and the single row angular contact ball bearing of two settings the most positive and negative；Described impeller fixed structure comprises impeller clamp nut and the second soket head cap screw, and the impeller being connected with impeller axle key fixed by impeller clamp nut, and uses the second soket head cap screw to be connected through impeller clamp nut and impeller axle are fixing；Described bearing clearance adjusts structure and uses the round nut of the single row angular contact ball bearing side being positioned at two settings the most positive and negative, uses fine thread to coordinate between round nut with impeller axle；The drive end of described bearing housing be arranged right below a leg, between leg with bearing housing use two fixing screws be connected.
Described leg uses that riser is fixing connects top panel and lower panel, is positioned at the floor of riser side and fixes with riser, top panel and lower panel and be connected, is equipped with installation screw on top panel and lower panel.
Described bearing housing uses cone cylinder structure.
The beneficial effects of the utility model are: this single-stage horizontal centrifugal pump structure includes that the pump housing, impeller, pump cover, bearing housing, impeller axle, leg, impeller fixed structure and bearing clearance adjust structure, impeller is arranged on the end stretching into pump housing middle period wheel shaft, and the shaft part of the impeller axle being positioned in bearing housing is sequentially provided with black box, single-row radial ball bearing and the single row angular contact ball bearing of two settings the most positive and negative；The impeller being connected with impeller axle key fixed by impeller clamp nut, and uses the second soket head cap screw to be connected through impeller clamp nut and impeller axle are fixing；Bearing clearance adjusts structure and uses the round nut of the single row angular contact ball bearing side being positioned at two settings the most positive and negative；The drive end of bearing housing be arranged right below a leg, between leg with bearing housing use two fixing screws be connected.This centrifugal pump structure should the compactest, reasonable stress, intensity and rigidity increases, and deflection is little, reduces vibration, and service life is long.
Accompanying drawing explanation
Fig. 1 is the main sectional view of a kind of horizontal single-stage centrifugal pump structure.
Fig. 2 is bearing housing leg front view.
Fig. 3 is bearing housing leg left view.
In figure: 1, the pump housing, 2, impeller, 3, pump cover, 4, bearing housing, 4a, fixing bolt, 5, single-row radial ball bearing, 6, impeller axle, 7, single row angular contact ball bearing, 8, round nut, 9, leg, 9a, top panel, 9b, riser, 9c, floor, 9d, lower panel, 10, black box, 11, the first soket head cap screw, 12, gasket seal, 13, impeller clamp nut, 14, the second soket head cap screw, 14a, sealing gasket, 15, fixing screw.
Detailed description of the invention
Fig. 1 shows the main sectional view of a kind of horizontal single-stage centrifugal pump structure.In figure, a kind of single-stage horizontal centrifugal pump structure includes that the pump housing 1, impeller 2, pump cover 3, bearing housing 4, impeller axle 6, leg 9, impeller fixed structure and bearing clearance adjust structure, the pump housing 1 is fixed together with pump cover 3, bearing housing 4 successively, and bearing housing 4 uses cone cylinder structure.Impeller 2 is arranged on the end stretching into the pump housing 1 middle period wheel shaft 6, is positioned on the shaft part of the impeller axle 6 in bearing housing 4 and is sequentially provided with black box 10, single-row radial ball bearing 5 and the single row angular contact ball bearing 7 of two settings the most positive and negative.Impeller fixed structure comprises impeller clamp nut 13 and the second soket head cap screw 14, and impeller clamp nut 13 impeller 2 bonded with impeller axle 6 is fixed, and uses the second soket head cap screw 14 to fix through impeller clamp nut 13 with impeller axle 6 to be connected.Bearing clearance adjusts structure and uses the round nut 8 of single row angular contact ball bearing 7 side being positioned at two settings the most positive and negative, uses fine thread to coordinate between round nut 8 with impeller axle 6；The drive end of described bearing housing 4 be arranged right below a leg 9, between leg 9 with bearing housing 4 use two fixing screws 15 be connected.
Fig. 2,3 structure charts showing bearing housing leg.Leg 9 uses riser 9b to be welded on top panel 9a and lower panel 9d, and the floor 9c and riser 9b, top panel 9a and the lower panel 9d that are positioned at riser 9b side are welded to connect, and are equipped with installation screw on top panel 9a and lower panel 9d.
Above-mentioned technical scheme compared with prior art exists the most progressive, such as: rear bearing inner ring is all with shaft block ring axial restraint all the time.Because shaft block ring has bigger thickness deviation, car adjusting pad thickness is very inconvenient, existing with having the round nut of retaining pad to lock reliably for this, is securely fixed on axle by thrust bearing (angular contact ball bearings of 7300 types of back-to-back installation)
Impeller is the core part of pump, is most important rotor component, it is necessary to have the ability safe operation that is locked reliably.The design loosens this phenomenon with regard to the impeller nut that standard chemical pump often occurs and has carried out the design improvement shown in Fig. 1.One hexagon socket cap head screw adds a sealing gasket, by being tightened on the impeller nut of spindle nose screw thread, tightens in the female thread of axle head, make impeller nut because stop time may reversion and do not loosen so that impeller will not axially displacement, eliminate potential faults.
General part parts of bearings leg traditionally is all that side is fixed, and there is leg always and fixes the unreasonable vibration problem caused.Now it is designed to hold structure from bearing housing bottom, has been " cross and position " equally, but this has been to eliminate out of plumb to affect, deform minimum, good rigidly, stable, rational " statically indeterminate beam ".
Feeding back according to user scene, bearing housing window root often has the situation of fracture；Manufacturing between brand-name computer extra bus, be frequently found the deformation of bearing housing large flange and look for the most greatly the most positive situation.Searching reason, be straight tube structure at original bearing housing window, during big impeller, bearing housing seam size and excircle dimension are very big, so that the difference of external diameter is too big at big external diameter and window root, make flanged plate be easily deformed.Operationally also it is easily broken off at window root.Bearing housing is designed to cone cylinder structure, and strengthens at window, increases with sectional area, composite bending modulus and the torsional modulus at flange contact, and stressing conditions improves, and intensity and rigidity are greatly increased, and deflection reduces, and eliminates the hidden danger of fracture, reduces vibration.
Test and on-the-spot operation prove, the design is very successful, and serviceability is reliable, has done again Fine design in overall structure simultaneously, saves material, makes more compact structure, and cost does not rise anti-fall, the new product of super quality and competitive price, is received by the market.
Claims (3)
1. a single-stage horizontal centrifugal pump structure, it includes the pump housing (1), impeller (2), pump cover (3), bearing housing (4) and impeller axle (6), it is characterized in that: further comprising leg (9), impeller fixed structure and bearing clearance adjust structure, the described pump housing (1) successively with pump cover (3), bearing housing (4) is fixed together, impeller (2) is arranged on the end stretching into the pump housing (1) middle period wheel shaft (6), it is positioned on the shaft part of the impeller axle (6) in bearing housing (4) and is sequentially provided with black box (10), the single row angular contact ball bearing (7) of single-row radial ball bearing (5) and two settings the most positive and negative；Described impeller fixed structure comprises impeller clamp nut (13) and the second soket head cap screw (14), the impeller (2) bonded with impeller axle (6) fixed by impeller clamp nut (13), and uses the second soket head cap screw (14) to be connected through impeller clamp nut (13) and impeller axle (6) are fixing；Described bearing clearance adjusts structure and uses the round nut (8) of single row angular contact ball bearing (7) side being positioned at two settings the most positive and negative, uses fine thread to coordinate between round nut (8) with impeller axle (6)；The drive end of described bearing housing (4) be arranged right below a leg (9), between leg (9) with bearing housing (4) use two fixing screws (15) be connected.
A kind of single-stage horizontal centrifugal pump structure the most according to claim 1, it is characterized in that: described leg (9) uses riser (9b) fixing connection top panel (9a) and lower panel (9d), it is positioned at that the floor (9c) of riser (9b) side is fixing with riser (9b), top panel (9a) and lower panel (9d) to be connected, top panel (9a) and lower panel (9d) are equipped with installation screw.
A kind of single-stage horizontal centrifugal pump structure the most according to claim 1, is characterized in that: described bearing housing (4) uses cone cylinder structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620145651.4U CN205446051U (en) | 2016-02-28 | 2016-02-28 | Horizontal centrifugal pump structure of single -stage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620145651.4U CN205446051U (en) | 2016-02-28 | 2016-02-28 | Horizontal centrifugal pump structure of single -stage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205446051U true CN205446051U (en) | 2016-08-10 |
Family
ID=56582585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620145651.4U Expired - Fee Related CN205446051U (en) | 2016-02-28 | 2016-02-28 | Horizontal centrifugal pump structure of single -stage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205446051U (en) |
-
2016
- 2016-02-28 CN CN201620145651.4U patent/CN205446051U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20200228 |