CN211039131U

CN211039131U - Enhanced bearing bush for centrifugal pump

Info

Publication number: CN211039131U
Application number: CN201921932551.6U
Authority: CN
Inventors: 徐梦甜; 刘军
Original assignee: Shandong Shuanglun Co Ltd
Current assignee: Shandong Shuanglun Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-07-17
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses an enhancement mode axle bush for centrifugal pump, including the cylinder axle bush, its characterized in that the axle bush cover is on the pump shaft, the fixed flange that is equipped with in axle bush periphery, the first wall middle part of axle bush is equipped with the semi-annular and leads to the groove, the semi-annular leads to the groove along circumference setting, owing to adopt above-mentioned structure, have novel structure, processing convenience, pump shaft deformation little, the operation is stable, do not have vibration and noise, long service life, cost of maintenance low, advantage such as work efficiency height.

Description

Enhanced bearing bush for centrifugal pump

Technical Field

The utility model relates to the field of fluid machinery, specific enhancement mode axle bush for centrifugal pump that says so.

Background

At present, when an existing centrifugal pump works, a rotating pump shaft drives an oil slinger to rotate and bring lubricating oil to the upper portion of a cavity of a bearing box and then fall onto the pump shaft, and the bearing bush and the pump shaft are lubricated through the lubricating oil, so that dry grinding and burning caused by dry contact between the pump shaft and the bearing bush are avoided. But the following defects exist in the using process: one, because slide bearing is higher as the concentricity, size precision, the assembly precision requirement of stationary part for the pump shaft rotating member, use and carry out the overhaul after the centrifugal pump passes through a period of time, reuse, just hardly guarantee the precision requirement, this just need be when the equipment through the pump shaft with join in marriage the high point of finding out the axle bush inner wall, reuse scraper scrapes, finally make axle bush hole and pump shaft concentric, consequently, cost of maintenance is high, work efficiency is low, the processing degree of difficulty is big, it is inconvenient to maintain.

Through the search, CN208793305 discloses a utility model patent of an oil slinger structure that can make oil smoothly pass through a shaft, and a sliding bearing of this structure, namely a bearing bush, is a halved structure, and this structure not only has the same substantive deficiency of the whole bearing bush, but also has the following two disadvantages: firstly, because the oil throwing damage is limited by a limiting channel of an inner cavity of a bearing bush, when the pump shaft rotates at a high speed, the oil throwing damage is easily limited by the limiting channel of the bearing bush to cause that the rotation is not flexible or the rotation cannot be performed, and further an oil throwing ring belt is not oiled, so that the pump shaft and the bearing bush are subjected to dry grinding and burnt;

secondly, because the clearance between axle bush and the pump shaft is very little, bring little lubricating oil into pump shaft and axle bush clearance through the oil slinger, the heat gives off slowly, leads to the high temperature of pump shaft during the operation, and then leads to the pump shaft to warp and produce vibration, big noise, and life is short.

Disclosure of Invention

The utility model aims at solving the not enough of above-mentioned prior art, provide a novel structure, pump shaft deformation little, the operation is stable, do not have vibration and noise, long service life, cost of maintenance low, the enhancement mode axle bush for centrifugal pump that work efficiency is high.

The utility model provides a technical scheme that its technical problem adopted is:

an enhanced bearing bush for a centrifugal pump comprises a cylindrical bearing bush and is characterized in that the bearing bush is sleeved on a pump shaft, a fixed flange is fixedly arranged on the periphery of the bearing bush, a semi-annular through groove is arranged in the middle of the upper half wall of the bearing bush and is arranged along the circumferential direction, so that a sliding bearing oil slinger passes through oil slinger movable insertion holes on two sides of an oil slinger constraint sleeve, the upper part of the sliding bearing oil slinger is placed in the semi-annular through groove of the bearing bush and falls on the pump shaft through self weight, the lower part of the sliding bearing oil slinger is positioned at the lower part of the oil slinger constraint sleeve and is contacted with lubricating oil in a bearing box body, when the sliding bearing oil slinger is driven by the pump shaft to rotate, the upper part of the sliding bearing oil slinger can movably rotate in an oil slinger movable space, the lubricating oil is brought into the bearing bush, make lubricating oil be extruded and produce the rigidity oil film and lift up the pump shaft, form the oil film between pump shaft and the axle bush like this, the heat that the oil film will be between pump shaft and axle bush is taken out and is flowed along with side clearance b2 and top clearance b1, makes the utility model provides an oil supplementing quantity of axle bush is higher than other structures greatly for the pump shaft warp little, the operation is stable, long service life, cost of maintenance are low, work efficiency is high.

The utility model discloses can a bearing bush lateral wall is equipped with the inlet port, and another lateral wall is equipped with the oil outlet, makes slide bearing oil slinger when the pump shaft drives down rotatoryly, and upper portion can be rotatory at oil slinger activity space internalization, passes through the whipping of slide bearing oil slinger with lubricating oil, brings lubricating oil into in the bearing bush in the oil slinger restraint cover through the semi-annular logical groove on inlet port and upper portion, and the oil film takes out and discharges along with the oil outlet with the heat between pump shaft and bearing bush, reaches the effect with the heat quick replacement in the bearing bush.

The utility model discloses axle bush inner wall circumference interval is equipped with the oil drain, the oil drain sets up along the axial. So as to be beneficial to more fully storing oil for the bearing bush.

The utility model discloses can axle bush inner wall both ends are equipped with the oil baffle wall respectively, the internal diameter of oil baffle wall is less than the axle bush internal diameter, oil baffle wall inner wall axial is equipped with out the oil groove, it is linked together with the oil drain to go out the oil groove, and the width is less than the oil drain width to do benefit to and carry out the pressurize through the oil baffle wall to the oil in the axle bush.

The utility model discloses owing to adopt above-mentioned structure, have novel structure, processing convenience, pump shaft deformation little, the operation is stable, do not have vibration and noise, long service life, cost of maintenance low, advantages such as work efficiency height.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left side view of fig. 1 (with pump shafts added).

Fig. 3 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

The present invention will be described with reference to the accompanying drawings and examples.

As shown in the attached drawings, the enhanced bearing bush for the centrifugal pump comprises a bearing bush body, and is characterized in that the bearing bush 4 is sleeved on a pump shaft 8, a fixed flange 12 is fixedly arranged on the periphery of the bearing bush 4, a semi-annular through groove 14 is arranged in the middle of the upper half wall of the bearing bush 4, the semi-annular through groove 14 is arranged along the circumferential direction, so that a sliding bearing oil slinger 5 passes through oil slinger movable insertion holes 11 on two sides of an oil slinger restraint sleeve 9, the upper part of the sliding bearing oil slinger 5 is placed in the semi-annular through groove 14 of the bearing bush and falls on the pump shaft 8 through self weight, the lower part of the sliding bearing oil slinger restraint sleeve 9 is positioned at the lower part of the oil slinger restraint sleeve 9 and is contacted with lubricating oil in a bearing box body 1, when the sliding bearing oil slinger 5 rotates under the driving of the pump shaft 8, the upper part can movably rotate in an oil slinger movable, because pump shaft 8 and axle bush 4 decentraction, and its lower part clearance dwindles gradually, make lubricating oil be extruded and produce the rigidity oil film and lift pump shaft 8, form the oil film between pump shaft 8 and axle bush 4 like this, the oil film takes out the heat between pump shaft 8 and axle bush 4 and flows along with side clearance b2 and top clearance b1, makes the utility model provides an axle bush 4's the oil supply volume is higher than other structures greatly for the pump shaft warp little, the operation is stable, long service life, cost of maintenance are low, work efficiency is high.

The utility model discloses can 4 lateral walls of axle bush are equipped with inlet port 15, and another lateral wall is equipped with oil outlet 16, when making slide bearing oil slinger 5 rotatory under the drive of pump shaft 8, and upper portion can be rotatory at oil slinger activity space 13 internalization, passes through slide bearing oil slinger 5's whipping with lubricating oil, in bringing into the axle bush in oil slinger restraint sleeve 9 through oil inlet 15 and the semi-annular logical groove 14 on upper portion with lubricating oil, the oil film takes out and discharges along with the oil outlet with the heat between pump shaft 8 and axle bush 4, reaches the effect with the quick replacement of the heat in the axle bush.

The utility model discloses 4 inner wall circumference intervals of axle bush are equipped with oil drain 17, oil drain 17 sets up along the axial. So as to be beneficial to more fully storing oil for the bearing bush 4.

The utility model discloses can axle bush inner wall both ends are equipped with oil baffle wall 18 respectively, oil baffle wall's internal diameter is less than the axle bush internal diameter, oil baffle wall 18 inner wall axial is equipped with out oil groove 19, it is linked together with oil ditch 17 to go out oil groove 19, and the width is less than oil ditch 17 width to do benefit to and carry out the pressurize through oil baffle wall to the oil in the axle bush.

When the centrifugal pump of the utility model is installed, the lower wall in the bearing bush 4 contacts with the lower wall of the pump shaft 8, a top gap b1 is formed between the upper wall and the pump shaft 8, a side gap b2 is formed between the two side walls and the pump shaft, so that the pump shaft 8 avoids large-area contact with the bearing bush 4 and generates heat in the high-speed rotation process, an oil slinger moving space 13 is formed between the upper wall of the bearing bush 4 and the oil slinger restraining sleeve 9, the periphery of one end of the bearing bush 4 is spliced with the fixing ring 10 and fixedly connects the fixing flange 16 with the left end face of the fixing ring 10 through the fixing bolt 23, the oil slinger 5 passes through the oil slinger moving jacks 11 at the two sides of the oil slinger restraining sleeve 9, the upper part is placed in the semi-annular through groove 14 of the bearing bush and falls on the pump shaft 8 through dead weight, the lower part is positioned at the lower part of the oil slinger restraining sleeve 9, the upper portion can be rotatory at the activity in oil slinger activity space 13, pass through the whipping of slide bearing oil slinger 5 with lubricating oil, bring lubricating oil into in the axle bush 4 in the oil slinger restraint cover 9 through the semi-annular logical groove 14 on upper portion, because pump shaft 8 and axle bush 4 are not concentric, and its lower part clearance dwindles gradually, make lubricating oil by the extrusion and produce the rigidity oil film and lift pump shaft 8, form the oil film between pump shaft 8 and axle bush 4 like this, the oil film takes out the heat between pump shaft 8 and axle bush 4 and flows along with side clearance b2 and top clearance b1, make the oil supplementing quantity of axle bush 4 be higher than other structures greatly for the pump shaft warp little, the operation is stable, long service life, cost of maintenance is low, work efficiency is high.

When the pump works, the pump shaft 8 is driven by the driving part to rotate to drive the impeller to pump out liquid, in the high-speed rotation process of the pump shaft 8, the roller bearing oil slinger 21 sleeved on the lock nut 6 slings lubricating oil into the roller bearing 3 to cool and lubricate the roller bearing 3, the sliding bearing oil slinger 5 on the bearing bush 4 is driven by the pump shaft 8 to rotate centrifugally like a hula hoop, the upper part can rotate movably in the oil slinger moving space 13, when the sliding bearing oil slinger 5 is contacted with the pump shaft 8, the lubricating oil brought out by the sliding bearing oil slinger 5 directly falls on the pump shaft 8 through the semi-annular through groove 14 on the upper part, because the pump shaft 8 and the bearing bush 4 are not concentric and the gap on the lower part is gradually reduced, the lubricating oil is extruded to generate a rigid oil film to lift the pump shaft 8, and because the semi-annular through groove 14 on the upper part of the, the heat between the pump shaft 8 and the bearing bush 4 is continuously taken out through the replaced oil film and flows out along with the side clearance and the oil outlet hole, when the sliding bearing oil slinger 5 is lifted up, and the top of the sliding bearing oil slinger 5 is contacted with the upper part of the oil slinger restraint sleeve 9, the lubricating oil is contacted with the inner wall of the oil slinger restraint sleeve 9 and flows out through the oil outlet 20 of the upper wall, so that the lubricating oil flows downwards along the periphery of the oil slinger restraint sleeve 9 and flows into the pump shaft 8 and the roller bearing 3 again.

And, at the high-speed rotatory in-process of pump shaft 8, the oil groove 17 of 4 inner walls of axle bush has stored up lubricating oil for the lubrication between pump shaft 8 and axle bush 4 obtains fully guaranteeing, and the oil baffle wall 18 through 4 both ends of axle bush block, and the slow oil of going out oil groove 19, has further reached the pressurize effect, makes the utility model provides an axle bush 4's the volume of mending oil is higher than other structures greatly, is showing the deflection that has reduced the pump shaft.

Claims

1. The utility model provides a centrifugal pump is with enhancement mode axle bush, includes the cylinder axle bush, its characterized in that the axle bush cover is on the pump shaft, the fixed flange that is equipped with in axle bush periphery, the last semi-annular through groove that is equipped with in the middle part of the semi-wall of axle bush, semi-annular through groove sets up along circumference.

2. The reinforced bearing shell for a centrifugal pump as claimed in claim 1, wherein one side wall of the bearing shell is provided with an oil inlet, and the other side wall of the bearing shell is provided with an oil outlet.

3. The reinforced bearing shell for the centrifugal pump according to claim 1 or 2, wherein the inner wall of the bearing shell is circumferentially provided with oil grooves at intervals, and the oil grooves are axially arranged.

4. The reinforced bearing shell for the centrifugal pump as claimed in claim 3, wherein two ends of the inner wall of the bearing shell are respectively provided with an oil baffle wall, the inner diameter of the oil baffle wall is smaller than the inner diameter of the bearing shell, the inner wall of the oil baffle wall is axially provided with an oil outlet groove, the oil outlet groove is communicated with the oil groove, and the width of the oil outlet groove is smaller than the width of the oil groove.