Damping type water guide bearing
By introducing an interference fit and clamping structure for spacers and bushings in the water guide bearing, the vibration and noise problems of the water guide bearing during pump shaft rotation are solved, achieving stable operation of the equipment and reducing wear.
Patent Information
- Application Number
- CN202423155450.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing water-guided bearings are prone to vibration and noise when the pump shaft rotates, and impurities in the water film tend to accumulate, affecting the vibration damping effect.
The design employs a bearing bracket, spacer, bushing, and bearing assembly. Through interference fit and compression structure, the elastic deformation of the spacer and bushing is used to dampen and buffer, and impurities are discharged through a water guide channel to ensure the stability of the bearing assembly.
It effectively reduces vibration and noise of the pump shaft and bearings, ensures stable operation of the equipment, reduces wear, and improves the operational stability of the equipment.
Smart Images
Figure CN223578282U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the bearing field, concretely relates to a novel water guide bearing. BACKGROUND
[0002] The water guide bearing is a key component for keeping the center position of the pump shaft, and plays a role of bearing the radial force of the rotating part of the pump shaft and stabilizing the rotation of the impeller. If the water guide bearing is worn too much or damaged, the dynamic runout of the unit shaft will increase, the vibration will intensify, and even the blade will collide with the shell. The water guide bearing is currently widely used in the fields of nuclear power, coal power, hydroelectricity main pump and multi-stage vertical circulating pump.
[0003] The existing water guide bearing comprises a bearing support, a damping layer and a bearing bush layer, the damping layer is tightly attached to the inner surface of the bearing support, the bearing bush layer is arranged on the inner surface of the damping layer, the bearing bush layer is composed of a plurality of strip bushings, the plurality of strip bushings are distributed in the circumferential direction of the damping layer, and medium liquid grooves are formed between adjacent strip bushings. However, the damping layer is only arranged between the bearing support and the bearing bush layer, and the damping layer is only simply matched with the bearing body and the bearing bush layer. Therefore, when the pump shaft rotates and shakes with the bearing bush, the relative rotation between the bearing bush and the damping layer and the bearing support is easily caused, the rotation of the pump shaft relative to the bearing cannot be guaranteed, the vibration of the pump shaft is intensified when the pump shaft rotates, the plastic deformation of the damping layer is easily caused after the damping layer is extruded and deformed, the damping effect of the damping layer on the bearing bush cannot be continuously guaranteed, the gap between the pump shaft and the bearing bush forms a water film when the pump shaft rotates, the friction and wear are reduced, and the damping and buffering effects are achieved. However, the impurities in the water film are accumulated in the gap between the pump shaft and the bearing bush, and the damping effect is affected. CONTENT
[0004] The utility model solves the problem of providing a damping type water guide bearing, which can reduce the vibration and noise generated by the pump shaft and the bearing during work, and make the whole equipment run more stably.
[0005] The utility model relates to a damping type water guide bearing, which comprises a bearing support, a spacer sleeve, a bushing, a bearing bush assembly and a gland. The spacer sleeve is installed in the bearing support, the bushing is installed in the spacer sleeve, and the bearing bush assembly is installed in the bushing. The spacer sleeve and the bushing assembly are in interference fit with the bearing support, and the gland is in fit with the inner hole of the bearing support and is tightly pressed on the end surface of the bushing and the bearing bush assembly.
[0006] Further, the bearing support comprises a sleeve pipe, a base and an inner retainer ring. The upper sleeve pipe and the lower base are integrally formed, and the inner retainer ring is integrally formed in the base.
[0007] Further, four recessed spacer sleeve limiting grooves are uniformly arranged on the inner surface of the sleeve pipe in the circumferential direction. Four protruding spacer sleeve outer clamping strips are uniformly arranged on the outer surface of the spacer sleeve in the circumferential direction. The spacer sleeve outer clamping strips are installed in the spacer sleeve limiting grooves.
[0008] Further, the inner surface of the spacer sleeve is uniformly provided with four recessed bushing limiting grooves in the circumferential direction, and the spacer sleeve outer clamping strip is arranged in a staggered manner with the bushing limiting grooves; the outer surface of the bushing is uniformly provided with four protruding bushing outer clamping strips in the circumferential direction; the bushing outer clamping strip is installed inside the bushing limiting groove.
[0009] Further, the lower end of the spacer sleeve is provided with a gasket, and the upper and lower ends of the gasket are in contact with the bottom of the bearing shell assembly and the inner retainer ring, respectively.
[0010] Further, the bearing shell assembly comprises a bearing shell body, a metal outer protective tube and a plurality of support rings; the inner surface of the bearing shell body is uniformly provided with a plurality of water guide grooves in the circumferential direction, and the inner surface of the bearing shell body is provided with a plurality of support rings in the height direction; the outer surface of the bearing shell body is sleeved with a metal outer protective tube.
[0011] Further, the upper part of the metal outer protective tube is provided with four positioning clamping grooves, and the lower end surface of the gland is integrally formed with four positioning clamping strips, which are arranged in the positioning clamping grooves.
[0012] Further, the outer surface of the gland is uniformly provided with four protruding pressing ears in the circumferential direction, and the pressing ears are installed inside the spacer sleeve limiting groove.
[0013] Further, the inner retainer ring is circumferentially provided with a plurality of limiting holes, the spacer sleeve is circumferentially provided with a plurality of guide holes, and the gland is circumferentially provided with a plurality of connecting holes, and the positions of the connecting holes, guide holes and limiting holes correspond to each other.
[0014] Further, the spacer sleeve is a nitrile rubber component, the bushing is a stainless steel component, and the bearing shell body is a silicon nitride ceramic component.
[0015] The advantages of the shock-absorbing water guide bearing of the utility model are as follows: first, the spacer sleeve and the bushing are arranged between the bearing support and the bearing shell assembly, and the gland is used to compress the bushing and the bearing shell assembly, so that when the bearing shell assembly installed outside the pump shaft vibrates, the spacer sleeve and the bushing can buffer the displacement of the bearing shell assembly through their own deformation; second, the spacer sleeve has good elasticity and can withstand large deformation, and can restore its original shape after deformation, thereby reducing the vibration and noise generated by the pump shaft and the bearing during work, and making the whole equipment run more smoothly; third, when the pump shaft rotates, the impurities in the water film formed between the pump shaft and the bearing shell body can flow out through the water guide grooves, and cannot accumulate in the gap between the pump shaft and the bearing, thereby reducing the wear between the pump shaft and the bearing, weakening the vibration when the pump shaft rotates, and ensuring the stable operation of the equipment. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a perspective view of the bearing of the utility model.
[0017] Figure 2 It is the exploded view of the bearing of the utility model;
[0018] Figure 3 It is the sectional view of the bearing of the utility model;
[0019] Figure 4 It is Figure 3 It is the enlarged structural schematic view of A in the middle;
[0020] Figure 5 It is the schematic view of the bearing bush assembly in the utility model. DETAILED DESCRIPTION
[0021] The technical scheme of the utility model will be described below in combination with the drawings and embodiments.
[0022] Embodiment 1
[0023] From Figure 1 , Figure 2 , Figure 3 It can be known that the utility model relates to a shock-absorbing water guide bearing which comprises a bearing support 1, a spacer sleeve 2, a bushing 3, a bearing bush assembly 4 and a gland 5.
[0024] The utility model has the advantages that the spacer sleeve 2 and the bushing 3 are arranged between the bearing support 1 and the bearing bush assembly 4, so that when the bearing bush assembly 4 is installed outside the pump shaft and vibrates, the spacer sleeve 2 and the bushing 3 can absorb and buffer the displacement of the bearing bush assembly 4 by deforming themselves; meanwhile, the bushing 3 is installed in an interference fit between the spacer sleeve 2 and the bearing bush assembly 4, so that the bushing 3 can reliably transfer the impact force to the spacer sleeve 2 under the impact and vibration load, thereby reducing the vibration when the pump shaft rotates and ensuring the stable operation of the equipment.
[0025] Embodiment 2
[0026] From Figure 2 , Figure 3 It can be known that the utility model relates to a shock-absorbing water guide bearing which comprises a bearing support 1, a spacer sleeve 2, a bushing 3, a bearing bush assembly 4 and a gland 5.
[0027] The bearing bracket 1 uses the sleeve 11, base 12 and inner support ring 14 to position the spacer 2 axially and radially, ensuring the reliability of the axial and radial positioning between the spacer 2 and the bearing bracket 1. This ensures that the bearing assembly will not be displaced when the pump shaft rotates, reduces the vibration when the pump shaft rotates, and ensures the stable operation of the equipment.
[0028] Example 3
[0029] from Figure 2 , Figure 3 As can be seen, in this utility model of shock-absorbing water guide bearing: the inner surface of the sleeve 11 is uniformly provided with four recessed spacer limiting grooves 13 along the circumference; the outer surface of the spacer 2 is uniformly provided with four raised spacer outer retaining strips 21 along the circumference; the spacer outer retaining strips 21 are installed inside the spacer limiting grooves 13.
[0030] The outer retaining strip 21 of the spacer is installed inside the spacer limiting groove 13, which ensures the reliability of the radial positioning of the spacer 2 relative to the sleeve 11, i.e., the bearing bracket 1. This ensures that the bearing assembly will not be displaced when the pump shaft rotates, reduces the vibration when the pump shaft rotates, and ensures the stable operation of the equipment. The outer retaining strip 21 of the spacer is integrally formed with the outer surface of the spacer 2.
[0031] Example 4
[0032] from Figure 2 , Figure 3 As can be seen, in this utility model of shock-absorbing water guide bearing: the inner surface of the spacer 2 is uniformly provided with four recessed bushing limiting grooves 22 along the circumference, and the outer retaining strip 21 of the spacer is misaligned with the bushing limiting groove 22; the outer surface of the bushing 3 is uniformly provided with four raised bushing outer retaining strips 31 along the circumference; the bushing outer retaining strips 31 are installed inside the bushing limiting groove 22.
[0033] The bushing outer retaining strip 31 is installed inside the bushing limiting groove 22, ensuring the reliability of the radial positioning of the bushing 3 relative to the spacer 2, thereby ensuring that the bearing assembly will not be displaced when the pump shaft rotates, reducing the vibration during pump shaft rotation, and ensuring the stable operation of the equipment. The bushing outer retaining strip 31 is integrally formed with the outer surface of the bushing 3.
[0034] Example 5
[0035] from Figure 2 , Figure 3 It can be seen that the shock-absorbing water guide bearing of this utility model has a washer 24 at the lower end of the spacer 2, and the upper and lower parts of the washer 24 are in contact with the bottom of the bearing assembly 4 and the inner support ring 14, respectively.
[0036] The spacer 2 cushions the bearing assembly 4 with the washer 24, reducing vibration during pump shaft rotation and ensuring stable operation of the equipment. The washer 24 and the lower end of the spacer 2 are integrally formed.
[0037] Embodiment 6
[0038] From Figure 4 , Figure 5 It can be known that the damping type water guide bearing of the utility model: the bearing bush assembly 4 includes the bearing bush body 45, the metal outer protective tube 42, a plurality of support rings 44;The inner surface of the bearing bush body 45 is evenly provided with a plurality of water guide grooves 41 along the circumference direction, and the inner surface of the bearing bush body 45 is provided with a plurality of support rings 44 along the height direction;The outer surface of the bearing bush body 45 is sleeved with the metal outer protective tube 42.
[0039] The metal outer protective tube 42 and the support ring 44 support the bearing bush body 45 from the outside and the inside respectively, improve the strength of the bearing bush assembly as a whole;When the pump shaft rotates, the impurities in the water film formed between the pump shaft and the bearing bush body 45 can flow out through the water guide groove 41, and will not accumulate in the gap between the pump shaft and the bearing bush, thereby reducing the wear between the pump shaft and the bearing, weakening the vibration when the pump shaft rotates, and ensuring the stable operation of the equipment. The bearing bush body 45, the metal outer protective tube 42 and the plurality of support rings 44 are integrally formed.
[0040] Embodiment 7
[0041] From Figure 2 , Figure 3 , Figure 5 It can be known that the damping type water guide bearing of the utility model: the upper portion of the metal outer protective tube 42 is provided with four positioning clamping grooves 43, and the lower end surface of the gland 5 is integrally formed with four positioning clamping strips 53, and the positioning clamping strip 53 is arranged in the positioning clamping groove 43.
[0042] The positioning clamping strip 53 is arranged in the positioning clamping groove 43, which ensures the reliability of the axial positioning and the radial positioning of the gland 5 relative to the bearing bush assembly 4, ensures that the bearing bush assembly will not displace when the pump shaft rotates, weakens the vibration when the pump shaft rotates, and ensures the stable operation of the equipment.
[0043] Embodiment 8
[0044] From Figure 1 , Figure 2 It can be known that the damping type water guide bearing of the utility model: the outer surface of the gland 5 is evenly provided with four convex pressing ears 51 along the circumference direction, and the pressing ear 51 is installed in the inside of the spacer sleeve limiting groove 13.
[0045] The pressing ear 51 is installed in the spacer sleeve limiting groove 13, which ensures the reliability of the positioning of the gland 5 relative to the bearing support 1, so that the bushing 3 and the bearing bush assembly 4 can be reliably pressed, and the bearing bush assembly will not displace when the pump shaft rotates, the vibration when the pump shaft rotates is weakened, and the stable operation of the equipment is ensured. The gland 5 and the pressing ear 51 are integrally formed.
[0046] Embodiment 9
[0047] From Figure 1 、 Figure 2 、 Figure 3 It can be known that the damping type water guide bearing: the inner retainer ring 14 is uniformly distributed with a plurality of limiting holes 15 along the circumference, the spacer sleeve 2 is uniformly distributed with a plurality of guide holes 23 along the circumference, and the gland 5 is uniformly distributed with a plurality of connecting holes 52 along the circumference, the positions of the connecting hole 52, the guide hole 23 and the limiting hole 15 correspond to each other.
[0048] The bolt and the nut connect the gland 5, the spacer sleeve 2 and the bearing support 1 through the connecting hole 52, the guide hole 23 and the limiting hole 15, so that the rotation between the gland 5, the spacer sleeve 2 and the bearing support 1 is prevented, and the gland 5 is pressed against the bushing 3 and the bearing bush assembly 4, so that the displacement of the bearing bush assembly is prevented when the pump shaft rotates, the vibration of the pump shaft is reduced when the pump shaft rotates, and the stable operation of the equipment is ensured.
[0049] Example 10
[0050] The damping type water guide bearing of the utility model: the spacer sleeve 2 is a butyl rubber component, the bushing 3 is a stainless steel component, and the bearing bush body 45 is a silicon nitride ceramic component.
[0051] The spacer sleeve 2 has good elasticity and can withstand large deformation, and can restore the original shape after deformation, thereby reducing the vibration and noise generated by the pump shaft and the bearing during work, and making the entire equipment run more smoothly.
[0052] When the damping type water guide bearing is assembled: first, the spacer sleeve 2 is installed inside the sleeve pipe 11, the spacer sleeve outer clamping strip 21 is installed inside the spacer sleeve limiting groove 13, and the guide hole 23 and the limiting hole 15 are in position correspondence; then the bearing bush assembly 4 is installed inside the bushing 3; then the bushing 3 is installed inside the spacer sleeve 2, the bushing outer clamping strip 31 is installed inside the bushing limiting groove 22; then the gland 5 is installed inside the bearing support 1, the pressing lug 51 is installed inside the spacer sleeve limiting groove 13, the positioning clamping strip 53 is clamped in the positioning clamping groove 43, and the connecting hole 52 and the guide hole 23 are in position correspondence; finally, the bolt and the nut are used to connect and fix the gland 5, the spacer sleeve 2 and the bearing support 1, so that the rotation between the gland 5, the spacer sleeve 2 and the bearing support 1 is prevented, the gland 5 is pressed against the bushing 3 and the bearing bush assembly 4, the displacement of the bearing bush assembly is prevented when the pump shaft rotates, the vibration of the pump shaft is reduced when the pump shaft rotates, and the stable operation of the equipment is ensured. The entire water guide bearing is connected with the guide vane body through the mounting hole 16.
[0053] The utility model discloses a shock-absorbing water guide bearing's advantages: one, bearing support 1 and bearing bush subassembly 4 between being provided with the spacer 2 and the bush 3, and the bush 3, bearing bush subassembly 4 are pressed tightly by gland 5 simultaneously, make bearing bush subassembly 4 install in the pump shaft outside produce the vibration, and the spacer 2 and the bush 3 carry out shock-absorbing buffer to bearing bush subassembly 4's displacement through own deformation: the bush 3 is installed between the spacer 2 and bearing bush subassembly 4 and is interfered, and the bush 3 can reliably transfer the impact force to the spacer 2 under the impact and vibration load, guarantees equipment steady operation, two, the spacer 2 has good elasticity, can bear big deformation, and can restore the original shape after deformation, reduce the vibration and noise of pump shaft and bearing when working, make the whole equipment operation more stable, three, when the pump shaft rotates, the impurity in the water film formed between pump shaft and bearing bush body 45 can flow out through the water guide groove 41, will not be accumulated to the gap between pump shaft and bearing bush, further reduces the wear and tear between pump shaft and bearing, weakens the vibration when pump shaft rotates, guarantees the stable operation of equipment.
[0054] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement etc. in the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A hydrodynamic journal bearing of the damping type, characterized by: It includes bearing support (1), spacer sleeve (2), bushing (3), bearing shell assembly (4), gland (5); bearing support (1) is installed with spacer sleeve (2) in, spacer sleeve (2) is installed with bushing (3) in, bushing (3) is installed with bearing shell assembly (4) in, and the interference fit between bushing (3) and spacer sleeve (2) and bearing shell assembly (4), gland (5) is matched with the inner hole of bearing support (1) and is pressed on the end face of bushing (3) and bearing shell assembly (4).
2. The hydrodynamic journal bearing of claim 1, wherein: Bearing support (1) includes sleeve pipe (11), base (12), inner ring (14); the sleeve pipe (11) of upper portion is integrally formed with the base (12) of lower portion, and the inner ring (14) is integrally formed in the inside of base (12).
3. The hydrodynamic journal bearing of claim 2, wherein: The inner surface of sleeve pipe (11) is uniformly provided with four recessed spacer sleeve limiting grooves (13) along the circumference; the outer surface of spacer sleeve (2) is uniformly provided with four protruding spacer sleeve outer clamping strips (21) along the circumference; spacer sleeve outer clamping strips (21) are installed in the inside of spacer sleeve limiting grooves (13).
4. The hydrodynamic journal bearing of claim 2, wherein: The inner surface of spacer sleeve (2) is uniformly provided with four recessed bushing limiting grooves (22) along the circumference, and spacer sleeve outer clamping strips (21) are arranged in a staggered manner with bushing limiting grooves (22); the outer surface of bushing (3) is uniformly provided with four protruding bushing outer clamping strips (31) along the circumference; bushing outer clamping strips (31) are installed in the inside of bushing limiting grooves (22).
5. The hydrodynamic journal bearing of claim 2, wherein: The lower end of spacer sleeve (2) is provided with a gasket (24), and the gasket (24) is in contact with the bottom of bearing shell assembly (4) and inner ring (14) respectively.
6. The hydrodynamic journal bearing of claim 1, wherein: Bearing shell assembly (4) includes bearing shell body (45), metal outer protective tube (42) and multiple support rings (44); the inner surface of bearing shell body (45) is uniformly provided with multiple water guide grooves (41) along the circumference, and the inner surface of bearing shell body (45) is provided with multiple support rings (44) along the height direction; the outer surface of bearing shell body (45) is sleeved with metal outer protective tube (42).
7. The hydrodynamic journal bearing of claim 6, wherein: The upper part of metal outer protective tube (42) is provided with four positioning clamping grooves (43), and the lower end surface of gland (5) is integrally formed with four positioning clamping strips (53), and the positioning clamping strips (53) are arranged in the positioning clamping grooves (43).
8. The hydrodynamic journal bearing of claim 1, wherein: The outer surface of gland (5) is uniformly provided with four protruding pressing ears (51) along the circumference, and the pressing ears (51) are installed in the inside of spacer sleeve limiting grooves (13).
9. The hydrodynamic journal bearing of claim 8, wherein: The inner ring (14) is uniformly distributed with multiple limiting holes (15) along the circumference, the spacer sleeve (2) is uniformly distributed with multiple guide holes (23) along the circumference, and the gland (5) is uniformly distributed with multiple connecting holes (52) along the circumference, and the positions of the connecting holes (52), the guide holes (23) and the limiting holes (15) correspond to each other.
10. The hydrodynamic journal bearing of claim 6, wherein: The spacer sleeve (2) is a nitrile rubber component, the bushing (3) is a stainless steel component, and the bearing shell body (45) is a silicon nitride ceramic component.