Clearance position adjusting device for pump body bearing

Abstract

The utility model provides a clearance position adjusting device for a pump body bearing, which comprises a pump shaft, a shaft sleeve, a jackscrew, a locking nut and a disc spring, the outer side of the pump shaft is provided with a group of internal adjusting threads used for adjusting the position of an external thread sleeve, and the outer side of the internal adjusting threads is provided with a group of external thread sleeves used for adjusting the front and back positions of the pump shaft. Compared with the prior art, the utility model has the following beneficial effects: the shaft sleeve is used for keeping the gap between the pump shaft and the inner bearing and improving the axial force on the pump shaft, so that the clearance between the inner ring and the outer ring of the inner bearing and the rolling body can be eliminated, and the initial contact elastic deformation is generated; therefore, the rigidity and the rotating precision of the inner bearing in a working state are improved, and meanwhile, by adjusting the position of the inner bearing and eliminating the clearance between the inner ring and the rolling body and between the outer ring and the rolling body, friction and abrasion can be reduced, and the service life of the inner bearing is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of pump body bearing clearance adjustment technology, and relates to a clearance position adjustment device for pump body bearings. Background Technology

[0002] The main drawbacks of existing pump body bearing clearance adjustment are insufficient precision, high adjustment complexity, increased maintenance costs, and potential negative impact on bearing life. These drawbacks arise primarily because adjusting bearing clearance requires precise measurement and adjustment techniques, while the limited internal space of the pump body and harsh working environments (such as high temperature, high pressure, and corrosive media) make precise adjustment difficult.

[0003] Conventional solutions include using mechanical means such as preload springs, adjusting shims, or adjustable bearing housings to adjust clearance. While these methods can solve the clearance problem to some extent, their drawbacks are also obvious. Preload springs, although providing stable preload force, have limited reliability due to spring stiffness and lifespan. Adjusting shims, while simple and easy to use, require frequent disassembly and replacement, increasing maintenance workload and downtime. Adjustable bearing housings offer a large adjustment range, but their complex structure, high cost, and difficulty in adjustment within the pump body can easily introduce new errors. Therefore, there is an urgent need for a clearance position adjustment device for pump body bearings to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a clearance position adjustment device for pump body bearings, so as to solve the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: a clearance position adjustment device for a pump body bearing, comprising: a pump shaft and a disc spring, wherein the pump shaft is provided with a set of internal adjusting threads for adjusting the position of the external threaded sleeve, the external adjusting threads are provided with a set of external threaded sleeves for adjusting the front and rear positions of the pump shaft, and the right side of the external threaded sleeve is provided with a set of external sealing rings for sealing engagement with the internal adjusting threads.

[0006] The outer sealing ring has a set of inner limiting baffles for limiting the inner bearing. Behind the inner limiting baffles is a set of inner bearings for limiting the movement of the pump shaft. Inside the inner bearings is a set of bushings for movably sealing the connection with the pump shaft. The right side of the bushing has an annular cross-section. The left side of the bushing has a disc spring for maintaining tension and limiting the bushing. Outside the disc spring are several sets of locking nuts for connecting it to the bushing.

[0007] In a preferred embodiment, several sets of locking nuts are evenly distributed on the outside of the disc spring and connected to the disc spring. Several sets of set screws are provided on the outside of the disc spring to maintain the limiting connection between the bushing and the inner bearing. During the use of this pump body, the gap between the pump shaft and the inner bearing is maintained by using the bushing, and the axial force on the pump shaft is increased by using the bushing. This can eliminate the clearance between the inner and outer rings of the inner bearing and the rolling elements, generating initial contact elastic deformation, thereby improving the stiffness and rotational accuracy of the inner bearing in the working state. At the same time, by adjusting the position of the inner bearing to eliminate the clearance between the inner and outer rings and the rolling elements, friction and wear can be reduced, and the service life of the inner bearing can be extended.

[0008] In a preferred embodiment, several sets of set screws are evenly distributed at an angle on the left side of the bushing, and the position of the bushing is defined. A connecting screw groove is provided on the inner side of the external threaded sleeve.

[0009] In a preferred embodiment, the connecting screw groove is screwed into the internal adjusting thread, and the outer sealing ring is fixedly connected to the outer threaded sleeve. The outer sealing ring is a rubber seal.

[0010] In a preferred embodiment, a set of pump sleeves for sealing the left side of the pump casing is provided on the rear side of the outer sealing ring, and a set of sealing cover plates for sealing the inside of the pump sleeves is provided on the left side of the pump sleeves.

[0011] In a preferred embodiment, the upper end of the pump sleeve is provided with a set of locking bolts for connecting and fixing the pump sleeve to the pump housing, and the right side of the pump sleeve is provided with a set of pump housing for protecting and sealing the inside of the pump body.

[0012] In a preferred embodiment, the upper end of the pump casing is provided with a set of connecting hooks for limiting its connection, and the right side of the pump casing is provided with a set of pump sleeve two for sealing the right side of the pump casing. The upper end of the pump sleeve two is provided with a set of locking bolts two for connecting and fixing the pump sleeve two to the pump casing. When the operator needs to adjust the clearance position, the external threaded sleeve is adjusted from the inside of the pump shaft, and the sealing cover is removed from the outside of the pump sleeve one and the pump sleeve two, thereby exposing the bearing, disc spring and locking nut, so that the operator can quickly adjust them.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are as follows: by using a bushing to maintain the clearance between the pump shaft and the inner bearing, and by using a bushing to increase the axial force on the pump shaft, the clearance between the inner and outer rings of the inner bearing and the rolling elements can be eliminated, generating initial contact elastic deformation, thereby improving the rigidity and rotational accuracy of the inner bearing in the working state. At the same time, by adjusting the position of the inner bearing to eliminate the clearance between the inner and outer rings and the rolling elements, friction and wear can be reduced, and the service life of the inner bearing can be extended.

[0014] When the clearance position needs to be adjusted, the external threaded sleeve is adjusted from the inside of the pump shaft, and the sealing cover is removed from the outside of pump sleeve one and pump sleeve two, thereby exposing the bearing, disc spring and locking nut so that the operator can quickly adjust them. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a top view of the left oblique front side of the structure of a clearance position adjustment device for a pump body bearing according to the present invention;

[0017] Figure 2 This is a top view of the left oblique front side of the structure position of the inner bearing in the clearance position adjustment device for pump body bearing of this utility model.

[0018] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This is a rear view of the internal structure of the inner bearing in a pump body bearing clearance position adjustment device according to the present invention.

[0020] In the diagram: 100-pump shaft, 110-external threaded sleeve, 120-internal adjusting thread, 130-external sealing ring, 140-sealing cover plate, 150-pump sleeve one, 160-locking bolt one, 170-connecting hook, 180-pump sleeve two, 190-locking bolt two, 200-side connector, 210-pump housing, 220-inner limit stop plate, 230-inner bearing, 240-shaft sleeve, 250-set screw, 260-locking nut, 270-disc spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4A clearance position adjustment device for a pump body bearing includes: a pump shaft 100, a bushing 240, a set screw 250, a lock nut 260, and a disc spring 270. The pump shaft 100 is provided with a set of internal adjusting threads 120 for adjusting the position of the external threaded sleeve 110. The external threaded sleeve 110 is provided with a set of external threaded sleeves 110 for adjusting the front and rear positions of the pump shaft 100. The external threaded sleeve 110 is provided with a set of external sealing rings 130 for sealing engagement with the internal adjusting threads 120 on the right side.

[0023] The inner side of the outer sealing ring 130 is provided with a set of inner limiting baffles 220 for limiting the inner bearing 230. The inner bearing 230 is provided behind the inner limiting baffles 220 for limiting the movement of the pump shaft 100. The inner side of the inner bearing 230 is provided with a set of bushings 240 for movably sealing and connecting with the pump shaft 100. The right side cross-section of the bushing 240 is an annular structure. The left side of the bushing 240 is provided with a disc spring 270 for maintaining the tension limit of the bushing 240. The outer side of the disc spring 270 is provided with several sets of locking nuts 260 for connecting with the bushing 240.

[0024] As the first embodiment of this utility model: several sets of locking nuts 260 are evenly distributed on the outside of the disc spring 270 and connected to the disc spring 270. Several sets of set screws 250 are provided on the outside of the disc spring 270 to keep the bushing 240 and the inner bearing 230 in a limiting connection. When the pump body is in use, the bushing 240 is used to maintain the gap between the pump shaft 100 and the inner bearing 230. The bushing 240 is also used to increase the axial force on the pump shaft 100. This can eliminate the clearance between the inner and outer rings of the inner bearing 230 and the rolling elements, and generate initial contact elastic deformation, thereby improving the rigidity and rotational accuracy of the inner bearing 230 in the working state. At the same time, by adjusting the position of the inner bearing 230, the clearance between the inner and outer rings and the rolling elements can be eliminated, which can reduce friction and wear and extend the service life of the inner bearing 230.

[0025] Several sets of set screws 250 are evenly distributed at an angle on the left side of the bushing 240, and the position of the bushing 240 is defined. The inner side of the external threaded sleeve 110 is provided with a connecting screw groove.

[0026] The connecting screw groove is screwed into the internal adjusting thread 120, and the outer sealing ring 130 is connected and fixed to the outer threaded sleeve 110. The outer sealing ring 130 is a rubber seal.

[0027] A set of pump sleeve 150 is provided on the rear side of the outer sealing ring 130 for sealing the left side of the pump housing 210. A set of sealing cover plate 140 is provided on the left side of the pump sleeve 150 for sealing the inside of the pump sleeve 150.

[0028] The upper end of the pump sleeve 150 is provided with a set of locking bolts 160 for connecting and fixing the pump sleeve 150 to the pump housing 210. The right side of the pump sleeve 150 is provided with a set of pump housing 210 for protecting and sealing the inside of the pump body.

[0029] As a second embodiment of this utility model: Based on the description in the above embodiments, further, the upper end of the pump housing 210 is provided with a set of connecting hooks 170 for limiting connection, and the right side of the pump housing 210 is provided with a set of pump sleeve 2 180 for sealing the right side of the pump housing 210. The upper end of the pump sleeve 2 180 is provided with a set of locking bolts 2 190 for connecting and fixing the pump sleeve 2 180 and the pump housing 210. When the operator needs to adjust the clearance position, the external threaded sleeve 110 is adjusted from the inside of the pump shaft 100, and the sealing cover plate 140 is taken out from the outside of the pump sleeve 1 150 and the pump sleeve 2 180, thereby exposing the inner bearing 230, disc spring 270 and locking nut 260 so that the operator can quickly adjust them.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A clearance position adjustment device for a pump body bearing, comprising: Pump shaft (100), bushing (240), set screw (250), lock nut (260) and disc spring (270), characterized in that: the pump shaft (100) is provided with a set of internal adjusting threads (120) for adjusting the position of the external threaded sleeve (110) on the outside, the internal adjusting threads (120) is provided with a set of external threaded sleeves (110) for adjusting the front and rear positions of the pump shaft (100) on the outside, and the external threaded sleeve (110) is provided with a set of external sealing rings (130) for sealing engagement with the internal adjusting threads (120) on the right side; The outer sealing ring (130) is provided with a set of inner limiting baffles (220) for limiting the inner bearing (230) on the inner side. The inner limiting baffles (220) is provided with a set of inner bearings (230) for limiting the movement of the pump shaft (100) on the rear side. The inner bearing (230) is provided with a set of bushings (240) for movably sealing the connection with the pump shaft (100) on the inner side. The right side cross-section of the bushing (240) is an annular structure. The left side of the bushing (240) is provided with a disc spring (270) for maintaining the tension limit of the bushing (240). The outer side of the disc spring (270) is provided with several sets of locking nuts (260) for connecting it to the bushing (240).

2. The clearance position adjustment device for a pump body bearing according to claim 1, characterized in that: Several sets of locking nuts (260) are evenly distributed on the outside of the disc spring (270) and connected to the disc spring (270). Several sets of set screws (250) are provided on the outside of the disc spring (270) to keep the bushing (240) and the inner bearing (230) in a limiting connection.

3. The clearance position adjustment device for a pump body bearing according to claim 2, characterized in that: Several sets of set screws (250) are evenly distributed at an angle on the left side of the bushing (240) and limit the position of the bushing (240). The inner side of the external threaded sleeve (110) is provided with a connecting screw groove.

4. The clearance position adjustment device for a pump body bearing according to claim 3, characterized in that: The connecting groove is screwed into the inner adjusting thread (120), and the outer sealing ring (130) is connected and fixed to the outer threaded sleeve (110). The outer sealing ring (130) is a rubber seal.

5. The clearance position adjustment device for a pump body bearing according to claim 4, characterized in that: The outer sealing ring (130) is provided with a set of pump sleeve (150) for sealing the left side of the pump housing (210), and a set of sealing cover plate (140) for sealing the inside of the pump sleeve (150) is provided on the left side of the pump sleeve (150).

6. The clearance position adjustment device for a pump body bearing according to claim 5, characterized in that: The upper end of the pump sleeve (150) is provided with a set of locking bolts (160) for connecting and fixing the pump sleeve (150) and the pump housing (210). The right side of the pump sleeve (150) is provided with a set of pump housing (210) for protecting and sealing the inside of the pump body.

7. The clearance position adjustment device for a pump body bearing according to claim 6, characterized in that: The upper end of the pump housing (210) is provided with a set of connecting hooks (170) for limiting connection. The right side of the pump housing (210) is provided with a set of pump sleeve two (180) for sealing the right side of the pump housing (210). The upper end of the pump sleeve two (180) is provided with a set of locking bolt two (190) for connecting and fixing the pump sleeve two (180) to the pump housing (210).

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