Pump shaft convenient to maintain

Abstract

The utility model relates to the technical field of pump shafts, in particular to a pump shaft convenient to maintain, which comprises a motor mounted on a base, the output end of the motor is connected with a coupler, a ring sleeve is mounted at the right end of the coupler, a pump shaft is sleeved on the coupler, a mounting ring is mounted on the pump shaft, and an expansion sleeve is sleeved on the pump shaft. Fastening bolts are in threaded connection with the interiors of threaded holes formed in the mounting ring, the expansion sleeve and the ring sleeve, a bearing seat for providing stable support for rotation of the pump shaft is mounted on the base, and a pump body is arranged at the tail end of the pump shaft. The expansion sleeve and the ring sleeve on the pump shaft can be separated by unscrewing the fastening bolt, then the pump shaft is pulled out of the coupler, the pump shaft can be taken down for maintenance, split type installation is adopted in the whole, special tools are not needed, the pump shaft can be dismantled for maintenance or replacement by unscrewing the fastening bolt, damage to the pump shaft is avoided, and the pump shaft is convenient to use. The operation is very convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to pump shaft technical field especially relates to a pump shaft convenient to maintain. BACKGROUND

[0002] In modern industrial production, pumps are widely used in many fields such as chemical industry, petroleum, electric power and so on as key fluid conveying equipment. As the core transmission component of the pump, the pump shaft is directly related to the running stability and reliability of the pump, and plays a crucial role in the normal operation of industrial production and infrastructure.

[0003] The traditional pump shaft adopts an integral structure and is tightly connected with impellers, bearings and other components. Once the pump shaft appears wear, crack and other faults, the disassembly process is extremely complex. Not only the entire pump body needs to be disassembled, but also professional tools are needed to assist, which consumes time and effort, greatly increases the equipment downtime, seriously affects the production efficiency, and also easily causes damage to other parts of the pump, further increasing the difficulty and cost of maintenance. SUMMARY

[0004] In view of the defects of the prior art, the utility model provides a pump shaft convenient to maintain, which solves the technical problem that the traditional pump shaft adopts an integral structure and is inconvenient to disassemble and maintain, and achieves the purpose of adopting a split type installation for the pump shaft, which is convenient to disassemble and maintain.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a pump shaft convenient to maintain, comprising a motor installed on a base, the output end of the motor is connected with a shaft coupling, the right end of the shaft coupling is installed with a ring sleeve, the shaft coupling is sleeved with a pump shaft, the pump shaft is installed with a mounting ring, the pump shaft is sleeved with an expansion sleeve, the threaded holes opened in the mounting ring, the expansion sleeve and the ring sleeve are connected with fastening bolts in threads, the base is installed with a bearing seat for providing stable support for the rotation of the pump shaft, and the end of the pump shaft is provided with a pump body.

[0006] Further improvement lies in that the expansion sleeve comprises a base matched with the mounting ring, and a tapered sleeve pipe installed on the base, and the base and the tapered sleeve pipe are both provided with through holes matched with the diameter of the pump shaft.

[0007] Further improvement lies in that the ring sleeve, the mounting ring and the base are all provided with threaded holes with the same aperture in a ring-shaped equidistant array, and the ring sleeve is provided with a tapered hole matched with the tapered sleeve pipe.

[0008] Further improvement lies in that the shaft coupling comprises a fixed jaw welded with the output end of the motor, the fixed jaw is installed with a butt joint jaw with a jaw surface matched with the fixed jaw, and the fixed jaw and the butt joint jaw are filled with a plum-blossom type elastic pad.

[0009] Further improvement lies in that the threaded holes opened on the base are all equipped with compression springs outside.

[0010] Further improvement lies in that the bearing seat comprises a fixed shaft seat installed on the base, and a movable shaft cover is hinged on the fixed shaft seat, and the fixed shaft seat and the movable shaft cover are both equipped with connecting plates on one side, and connecting bolts are threadedly connected in the symmetrically opened threaded holes on the two connecting plates.

[0011] By the above technical scheme, the utility model provides a pump shaft convenient to maintain, at least has the following beneficial effects:

[0012] 1. The utility model discloses a pump shaft, which can be separated from the ring sleeve by unscrewing the fastening bolt, and then the pump shaft can be taken out from the shaft coupling for maintenance, which is installed in a split type and does not need special tools, and the pump shaft can be removed, maintained or replaced by unscrewing the fastening bolt, which is very convenient to operate.

[0013] 2. The utility model discloses a pump shaft, which can be separated from the ring sleeve by unscrewing the fastening bolt, and then the pump shaft can be taken out from the shaft coupling for maintenance, which is installed in a split type and does not need special tools, and the pump shaft can be removed, maintained or replaced by unscrewing the fastening bolt, which is very convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which are included to provide a further understanding of the application and constitute a part of this application, illustrate embodiments of the application and serve to explain the principle of the application, and do not constitute improper limitations to the application.

[0015] In the drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the enlarged local structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the split local structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the enlarged bearing seat structure of the utility model.

[0020] In the drawings: 1, base; 2, motor;

[0021] 3, shaft coupling; 31, fixed clamping jaw; 32, butt joint clamping jaw; 33, plum-blossom type elastic pad;

[0022] 4, ring sleeve; 5, pump shaft; 6, mounting ring;

[0023] 7, expansion sleeve; 71, base; 72, conical sleeve;

[0024] 8, fastening bolt; 9, compression spring;

[0025] 10, bearing seat; 101, fixed shaft seat; 102, movable shaft cover; 103, connecting plate; 104, connecting bolt;

[0026] 11, pump body. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] Embodiment one

[0029] In view of the problem that the conventional pump shaft adopts an integral structure and is inconvenient to disassemble and maintain, the embodiment provides a pump shaft convenient to maintain, please refer to Figures 1-4 , which can be installed in a split type and is convenient to disassemble and maintain. The pump shaft convenient to maintain comprises a motor 2 installed on a base 1, a shaft coupling 3 connected to an output end of the motor 2, a ring sleeve 4 installed at a right end of the shaft coupling 3, a pump shaft 5 sleeved on the shaft coupling 3, an installation ring 6 installed on the pump shaft 5, an expansion sleeve 7 sleeved on the pump shaft 5, fastening bolts 8 threadedly connected in threaded holes formed in the installation ring 6, the expansion sleeve 7 and the ring sleeve 4, a bearing seat 10 installed on the base 1 and providing stable support for rotation of the pump shaft 5, and a pump body 11 arranged at an end of the pump shaft 5.

[0030] The expansion sleeve 7 comprises a base 71 matched with the installation ring 6 and a conical sleeve 72 installed on the base 71, and threaded holes are formed in the base 71 and the conical sleeve 72 and matched with a diameter of the pump shaft 5. First, the pump shaft 5 is installed in the bearing seat 10, then the expansion sleeve 7 is sleeved on the pump shaft 5, the base 71 abuts against the installation ring 6, and the threaded holes formed in the base 71 and the installation ring 6 are aligned, the connecting end of the pump shaft 5 is inserted into the shaft coupling 3 through the ring sleeve 4, at this time, the threaded holes formed in the ring sleeve 4, the installation ring 6 and the expansion sleeve 7 are aligned, then the fastening bolts 8 are screwed into the threaded holes in the ring sleeve 4, the installation ring 6 and the expansion sleeve 7, and the ring sleeve 4, the installation ring 6 and the expansion sleeve 7 are tightly connected under the fixation of the fastening bolts 8, so that the installation of the pump shaft 5 is completed, and when disassembled, the pump shaft 5 can be removed and maintained by only unscrewing the fastening bolts 8, without damaging the pump shaft 5, and without using special tools, so that the pump shaft 5 is convenient to maintain or replace, and the operation is very convenient.

[0031] The ring sleeve 4, mounting ring 6 and base 71 are all provided with threaded holes of the same diameter in an equidistant array. The ring sleeve 4 is provided with a tapered hole that matches the tapered sleeve 72, so that the ring sleeve 4 and the tapered sleeve 72 fit more tightly, improve the stability of the connection between the two, and thus improve the stability of the pump shaft 5.

[0032] To facilitate the disassembly and maintenance of the pump shaft 5, maintain its operation, reduce wear, and minimize maintenance frequency, the coupling 3 in this device includes a fixed jaw 31 welded to the output end of the motor 2. The fixed jaw 31 is fitted with a mating jaw 32 whose jaw surfaces are compatible. A plum blossom-shaped spring washer 33 fills the space between the fixed jaw 31 and the mating jaw 32. Simply passing the pump shaft 5 through the mating jaw 32 and inserting it into the plum blossom-shaped spring washer 33 completes the connection between the pump shaft 5 and the fixed jaw 31, making disassembly and maintenance simpler and more convenient. The plum blossom-shaped spring washer 33 possesses excellent elasticity and damping characteristics, effectively absorbing and isolating vibrations and impacts between the motor 2 and the pump shaft 5, reducing vibration transmission, thus better protecting the pump shaft 5 and reducing the frequency of disassembly and maintenance.

[0033] The bearing housing 10 includes a fixed bearing housing 101 mounted on the base 1. A movable bearing cover 102 is hinged to the fixed bearing housing 101. A connecting plate 103 is mounted on one side of both the fixed bearing housing 101 and the movable bearing cover 102. Threaded holes symmetrically opened on the two connecting plates 103 are threaded with connecting bolts 104. When disassembling the pump shaft 5, the connecting bolts 104 are unscrewed, and then the movable bearing cover 102 is flipped up from the fixed bearing housing 101 to remove the pump shaft 5 for maintenance. During installation, the pump shaft 5 is snapped into the fixed bearing housing 101 and the movable bearing cover 102, and then the connecting bolts 104 are tightened. This provides stable support for the rotation of the pump shaft 5.

[0034] Example 2

[0035] To facilitate the removal of the pump shaft 5 from the coupling 3 and the ring 4, therefore, based on Embodiment 1, as follows: Figures 1-4 As shown, compression springs 9 are installed on the outer side of the threaded holes on the base 71 of the device. As the fastening bolts 8 are screwed in, the base 71 gradually moves closer to the ring 4 and compresses the compression springs 9. The presence of the fastening bolts 8 restricts the compression springs 9 to be compressed linearly along the axial position of the fastening bolts 8. When the fastening bolts 8 are unscrewed and the pump shaft 5 is taken out for maintenance, the compression springs 9 return to their original position under their own elasticity, thereby pushing the base 71 away from the ring 4, thus assisting in the extraction and removal of the pump shaft 5 for maintenance.

[0036] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pump shaft for ease of maintenance, comprising a motor (2) mounted on a base (1), characterized in that: The output end of the motor (2) is connected with a shaft coupling (3), the right end of the shaft coupling (3) is provided with a ring sleeve (4), the shaft coupling (3) is sleeved with a pump shaft (5), the pump shaft (5) is provided with a mounting ring (6), the pump shaft (5) is sleeved with an expansion sleeve (7), the threaded holes formed in the mounting ring (6), the expansion sleeve (7) and the ring sleeve (4) are screwed with fastening bolts (8), the base (1) is provided with a bearing seat (10) for providing stable support for the rotation of the pump shaft (5), and the pump shaft (5) is provided with a pump body (11) at the end.

2. A pump shaft for facilitating maintenance in accordance with claim 1, wherein: The expansion sleeve (7) comprises a base (71) matched with the mounting ring (6), and a tapered sleeve (72) mounted on the base (71), and the base (71) and the tapered sleeve (72) are both provided with through holes matched with the diameter of the pump shaft (5).

3. A pump shaft for facilitating maintenance in accordance with claim 2, wherein: The ring sleeve (4), the mounting ring (6) and the base (71) are all provided with threaded holes in a ring-shaped equidistant array, and the threaded holes have the same aperture, the ring sleeve (4) is provided with a tapered hole matched with the tapered sleeve (72).

4. A pump shaft for facilitating repair in accordance with claim 1, wherein: The shaft coupling (3) comprises a fixed jaw (31) welded with the output end of the motor (2), the fixed jaw (31) is provided with a butt jaw (32) matched with the jaw surface, and the fixed jaw (31) and the butt jaw (32) are filled with a plum-blossom type elastic pad (33).

5. A pump shaft for facilitating repair in accordance with claim 3, wherein: The threaded holes formed in the base (71) are all provided with compression springs (9) outside.

6. A pump shaft for facilitating repair in accordance with claim 1, wherein: The bearing seat (10) comprises a fixed shaft seat (101) mounted on the base (1), the fixed shaft seat (101) is hinged with a movable shaft cover (102), and the fixed shaft seat (101) and the movable shaft cover (102) are both provided with connecting plates (103) on one side, and the connecting bolts (104) are screwed in the threaded holes symmetrically formed in the two connecting plates (103).

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