CN206845534U - A kind of impeller anti-wear structure on water pump - Google Patents

Abstract

The utility model discloses the impeller anti-wear structure on a kind of water pump, including motor, support and the pump housing, axis hole is provided with support, bearing hole is provided with the medial surface of support, the bearing hole is concentric with axis hole, bearing is installed in bearing hole, the rotating shaft of motor matches the axis hole through the interior ring through hole and support of bearing；The internal diameter of the bearing hole is more than or equal to the external diameter of bearing outer ring, and jump-ring slot is provided with bearing hole inwall；One jump ring is fastened in jump-ring slot, and jump ring is acted on the outer ring top surface for being tightly pressed at bearing by inclined plane；Combined between the impeller inner face and the inner face of the flat axle of step provided with pad；The height of the pad combination is more than the distance between flat axle inner face of step to inserts.Impeller anti-wear structure on water pump of the present utility model, simple in construction, easy for installation, difficulty of processing is low, and production cost is low, can effectively prevent damage in impeller.

Description

A kind of impeller anti-wear structure on water pump

Technical field

The utility model is the impeller anti-wear structure on a kind of water pump.

Background technology

Water pump, as shown in figure 1, generally including motor, support 101 and the pump housing, motor includes motor casing, stator and rotor 102, motor casing is fixed on the inner face 103 of support 101, and the outer face 104 of support 101 is fixedly connected with the pump housing, the support 101 Outer face 104 and the inner face of the pump housing be equipped with inserts；There is rotating shaft 105, rotating shaft 105 and support at the center of rotor 102 There is bearing 106, the inner ring of bearing 106 is enclosed in rotating shaft 105 and is interference fitted with rotating shaft 105, outside bearing 106 between 101 In bearing hole 107 of the circle in support 101, and interference fit is realized with the inwall of bearing hole 107；In addition, rotating shaft 105 extends to Outside the other end of support 101, the outer face of rotating shaft 105 is provided with flat axle 108, and impeller 110 is arranged on flat axle 108, impeller 110 Mounting hole 111 be the arcuate apertures that matchs with flat axle 108, mounting hole 111 is excessively cooperation, and the end of impeller 110 with flat axle 108 Face has some circular grooves 109, has the salient point that match with circular groove 109 on flat axle 108, with increase flat axle 108 and impeller 110 it Between assemble firmness, stability.Fastening means between bearing and support above, there is following defect：Bearing passes through Press fitting and bearing hole close-fitting, cause bearing to be easily damaged during press fitting, and scrappage is high so that the average value of production cost Rise, assembly technology is cumbersome, in addition, the assembly relation of close-fitting, in production and processing, to the requirement on machining accuracy of bearing hole compared with Height, it reduce production efficiency, meanwhile, also improve processing cost；The impeller and support of said structure, impeller are being criticized with support Measure in production process, there is machining tolerance, and this causes the finished product of some after the completion of assembling, coordinates there is gap Situation, and the presence of such case, cause during long-play, between impeller and flat axle due to abrasion cause both it Between assembly relation be changed into gap cooperation, impeller has moving displacement in the axial direction, and this causes the inner face of impeller, outer face to divide Inserts, the inserts of pump housing inner face not with support outer face collide, rubbed, and have a strong impact on the service life of impeller, together When also influence the performance of water pump.

The content of the invention

Technical problem to be solved in the utility model is to provide the impeller anti-wear structure on a kind of water pump, and it can letter Change the assembly technology of bearing and support, avoid bearing from improving production efficiency due to being pressed improper caused deformation, scrapping, reduce Production cost；Meanwhile prevent impeller that there is moving displacement with respect to rotating shaft, prevent impeller from colliding, rubbing with inserts.

In order to solve the above technical problems, the technical solution of the impeller anti-wear structure on a kind of water pump of the utility model For：

A kind of inner face connection of impeller anti-wear structure on water pump, including motor, support and the pump housing, motor and support Fixed, the pump housing is arranged on the outer face of support, and the inner face in the outer face of support and the pump housing is equipped with inserts, on the support Provided with axis hole, bearing hole is provided with the medial surface of support, the bearing hole is concentric with axis hole, and bearing is installed in bearing hole, Machine shaft matches the axis hole through the interior ring through hole and support of bearing and extended on the outside of the outer face of support, the motor Impeller is installed on the flat axle of step of rotating shaft, is provided with external screw thread axle on the outer face of the flat axle of step, on the external screw thread axle according to Secondary to put plain cushion, spring washer, be then spirally connected nut on outer thread spindle, is relatively fixed so that impeller is realized with machine shaft；Institute The internal diameter for stating bearing hole is more than or equal to the external diameter of bearing outer ring, and jump-ring slot is provided with bearing hole inwall；The jump-ring slot be with The rotary body that right-angled trapezium is formed for section around the rotation of bearing centerline hole, and there is bottom surface, side and top surface, the top surface For inclined plane, the top surface of bearing outer ring is higher than the bottom surface of jump-ring slot and is fastened on jump-ring slot less than the top surface of jump-ring slot, a jump ring Interior, jump ring is acted on the outer ring top surface for being tightly pressed at bearing by inclined plane；Mechanical seal is also equipped with the machine shaft Component, the mechanical sealing assembly are built in the fixing groove of support, and the fixing groove is in the outer face of support and and axis hole With one heart；Combined between the impeller inner face and the inner face of the flat axle of step provided with pad, the shim pack trap turns in motor On axle and pad combination one end be against on the inner face of the flat axle of step, the other end is against on impeller；The height of the pad combination Degree is more than the distance between flat axle inner face of step to inserts；The pad combination is made up of some gasket units.

The top surface is the inclined plane tilted down, has upper edge and a lower edge, the lower edge to bearing outer ring top surface away from From the thickness less than jump ring, the distance on upper edge to bearing outer ring top surface is more than or equal to the thickness of jump ring.

What the utility model can reach has the technical effect that：

Compared with prior art, the bearing hole of the impeller anti-wear structure on water pump of the present utility model, bearing and support Between be that pine is matched somebody with somebody, and by jump ring come prevent bearing depart from bearing hole, in order to allow bearing in bearing hole normal work, it is necessary to will The outer ring of bearing is fixed with bearing hole, and the top droop face of jump-ring slot make use of the elastic force expanded outwardly of jump ring well, Jump ring is enabled to extrude the outer ring top surface of bearing along inclined plane, the top surface of the outer ring of bearing is against on jump ring, and bottom surface is against Bearing hole bottom surface, and finally with support realize fix, there is it is easy for installation, requirement on machining accuracy is low, reduces the advantages that cost, There is mobile possibility in the axial direction so as to prevent machine shaft；

Compared with prior art, the impeller anti-wear structure on water pump of the present utility model, when machine shaft opposite brackets After having prevented mobile possibility, pad is set to combine between mechanical sealing assembly and impeller, pad is combined as some pads Unit, by adjust pad combine height, can adjust impeller the pump housing interior edge machine shaft axial direction position, so as to obtain leaf The best position of wheel, i.e.,：The distance of the inner face of impeller to the inserts of support outer face is equal to the outer face of impeller to pump The distance of the inserts of internal end face, makes the performance of water pump reach optimal, meanwhile, impeller and machine shaft are fixed by screw, Make impeller along the axial space do not moved of machine shaft, so as to avoid impeller and support, the pump housing from colliding friction.

Brief description of the drawings

The utility model is described in further detail with reference to the accompanying drawings and detailed description：

Fig. 1 is the stereogram of background technology of the present utility model；

Fig. 2 is the three-dimensional exploded view of an angle of the impeller anti-wear structure on the utility model water pump；

Fig. 3 is the three-dimensional exploded view of another angle of the impeller anti-wear structure on the utility model water pump；

Fig. 4 is the sectional view of the impeller anti-wear structure on the utility model water pump；

Fig. 5 is Fig. 4 A portions enlarged drawing；

Fig. 6 is Fig. 4 B portions enlarged drawing.

Embodiment

Fig. 2 to Fig. 6 is referred to, the utility model provides the impeller anti-wear structure on a kind of water pump, including motor, support 1 and the pump housing, motor includes housing, machine shaft 5 and rotor core 15, the inner face 16 of motor and support 1 and is connected, the pump housing Installed in the outer face 17 of support 1, the inner face in the outer face 17 of support 1 and the pump housing is equipped with inserts 18, on the support 1 Provided with axis hole 2, bearing hole 3 is provided with the medial surface of support 1, the bearing hole 3 is concentric with axis hole 2, is installed in bearing hole 3 Bearing 4, machine shaft 5 match through bearing 4 the through hole of inner ring 6 and support 1 axis hole 2 and extend to the outer face of support 1 On the outside of 17, impeller 20 is installed on the flat axle 19 of step of the machine shaft 5, outer spiral shell is provided with the outer face of the flat axle 19 of step Line axle 21, plain cushion 22, spring washer are put successively on the external screw thread axle 21（It is not drawn into figure）, then it is spirally connected on outer thread spindle 21 Nut 23, it is relatively fixed so that impeller 20 is realized with machine shaft 5；The internal diameter of the bearing hole 3 is more than or equal to outside bearing 4 The external diameter of circle 7, jump-ring slot 8 is provided with the inwall of bearing hole 3；It using right-angled trapezium is section around the center of bearing hole 3 that the jump-ring slot 8, which is, The rotary body that line rotates and formed, and with bottom surface 9, side 10 and top surface 11, the top surface 11 is inclined plane, the outer ring 7 of bearing 4 Bottom surface 9 of the top surface higher than jump-ring slot 8 and the top surface 11 less than jump-ring slot 8, a jump ring 12 is fastened in jump-ring slot 8, jump ring 12 The top surface of outer ring 7 for being tightly pressed at bearing 4 is acted on by inclined plane；Mechanical sealing assembly is also equipped with the machine shaft 5 24, the mechanical sealing assembly 24 is built in the fixing groove 25 of support 1, and the fixing groove 25 is in the outer face 17 of support 1 It is and concentric with axis hole 2；26 are combined provided with pad between the inner face 27 of the inner face of impeller 20 axle 19 flat with step, the pad Piece combination 26 is enclosed on machine shaft 5 and one end of pad combination 26 is against on the inner face 27 of the flat axle 19 of step, and the other end supports On impeller 20；The height h of the pad combination 26 is more than the flat inner face 27 of axle 19 of step to the inserts 18 of support outer face 17 The distance between d；The pad combination 26 is made up of some gasket units.

The top surface 11 is the inclined plane that tilts down, have on along 13 with lower along 14, it is described lower along 14 to the outer ring of bearing 4 The distance of 7 top surfaces be less than jump ring 12 thickness, on along 13 to the top surface of 4 outer ring of bearing 7 distance be more than or equal to jump ring 12 thickness Degree.

Impeller anti-wear structure on water pump of the present utility model, in assembling, bearing 4 is placed into bearing hole 3, due to The internal diameter of bearing hole 3 is more than the external diameter of bearing 4, so bearing 4 can be very easily put into bearing hole 3, without instrument or using simple Instrument is that the loading to bearing 4 can be achieved, and then, jump ring 12 is caught in into jump-ring slot 8 using Circlip tongs, due to the top surface of jump-ring slot 8 The design of 11 incline structures, jump ring 12 have the elastic force expanded outwardly, and so, jump ring 12 can move down along inclined plane, and most The top surface of outer ring 7 of bearing 4 is squeezed in eventually, and bearing 4 is fixed in bearing hole 3.

When assembling bearing 4, bearing 4 is typically inserted in machine shaft 5 in place first, so, assemble and complete in bearing 4 While, machine shaft 5 is also achieved with support 1 and is connected, because the opposite brackets 1 of bearing 4 are stationary state all the time, so, electricity The opposite brackets 1 of machine rotating shaft 5 do not have moveable space yet；Then mechanical seal group is inserted in successively from the outer face of machine shaft 5 Part 24, pad combination 26, impeller 20, plain cushion 22, spring washer and nut 23, mechanical sealing assembly 24 are embedded in the fixation of support 1 In groove 25, by measuring the flat inner face of axle 19 of step to the distance of the outer face of inserts 18 of support 1, it is determined that placing pad combination 26 Height, pad combination 26 is made up of some gasket units, specifically, gasket unit has multiple level of thickness, according to reality Need, select suitable gasket unit, so that the pad combination 26 that superposition is formed meets actual requirement, finally, tighten spiral shell Mother 23, impeller 20, pad combination 26 is set to form an entirety with machine shaft 5.

Operationally, no longer moved because machine shaft 5 is limited by bearing 4, be with respect to machine shaft 5 plus impeller 20 Absolute stationary state so that in long-play, will not also collide impeller 20 friction with support 1, the pump housing, pass through pad Combination 26, makes impeller 20 be in optimum assembling position, can obtain preferable runnability.

The impeller anti-wear structure on a kind of water pump provided above the utility model embodiment has carried out detailed Jie Continue, specific case used herein is set forth to principle of the present utility model and embodiment, and above example is said It is bright to be only intended to help to understand the technical scheme disclosed in the utility model；Meanwhile for those of ordinary skill in the art, according to According to thought of the present utility model, there will be changes in specific embodiments and applications, in summary, this specification Content should not be construed as limitation of the present utility model.

Claims (2)

1. the inner face connection of the impeller anti-wear structure on a kind of water pump, including motor, support and the pump housing, motor and support is solid Fixed, the pump housing is arranged on the outer face of support, and the inner face in the outer face of support and the pump housing is equipped with inserts, set on the support There is axis hole, it is characterised in that：The medial surface of the support is provided with bearing hole, and the bearing hole is concentric with axis hole, in bearing hole Interior installation bearing, machine shaft match the axis hole through the interior ring through hole and support of bearing and extended to outside the outer face of support Side, impeller is installed on the flat axle of step of the machine shaft, external screw thread axle is provided with the outer face of the flat axle of step, it is described outer Plain cushion, spring washer are put on thread spindle successively, be then spirally connected nut on outer thread spindle, so that impeller realizes phase with machine shaft To fixation；The internal diameter of the bearing hole is more than or equal to the external diameter of bearing outer ring, and jump-ring slot is provided with bearing hole inwall；The card Spring groove is the rotary body formed using right-angled trapezium as section around the rotation of bearing centerline hole, and has bottom surface, side and top surface, The top surface is inclined plane, and the top surface of bearing outer ring is higher than the bottom surface of jump-ring slot and set less than the top surface of jump-ring slot, a jump ring card In jump-ring slot, jump ring is acted on the outer ring top surface for being tightly pressed at bearing by inclined plane；It is also equipped with the machine shaft Mechanical sealing assembly, the mechanical sealing assembly are built in the fixing groove of support, and the fixing groove is in the outer face of support It is and concentric with axis hole；Combined between the impeller inner face and the inner face of the flat axle of step provided with pad, the shim pack trap On machine shaft and pad combination one end be against on the inner face of the flat axle of step, the other end is against on impeller；The pad The height of combination is more than the distance between flat axle inner face of step to inserts；The pad combination is made up of some gasket units.

2. the impeller anti-wear structure on a kind of water pump according to claim 1, it is characterised in that：The top surface is downward Inclined inclined plane, there is upper edge and lower edge, the distance of the lower edge to bearing outer ring top surface is less than the thickness of jump ring, and upper edge is extremely The distance of bearing outer ring top surface is more than or equal to the thickness of jump ring.