CN215719543U

CN215719543U - Centrifugal pump with anti-corrosion structure

Info

Publication number: CN215719543U
Application number: CN202122074788.9U
Authority: CN
Inventors: 虞育芳; 尹吉祥
Original assignee: Changzhou Jintan Swan Spray Irrigation Machinery Co ltd
Current assignee: Changzhou Jintan Swan Spray Irrigation Machinery Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-02-01
Anticipated expiration: 2031-08-30

Abstract

The utility model relates to the technical field of centrifugal pumps and discloses a centrifugal pump with an anti-corrosion structure, which comprises a first motor, wherein the output end of the first motor is fixedly connected with a pump shaft through a coupler, the left part of the coupler is fixedly connected with a support, the left part of the support is fixedly connected with a pump shell, the left part of the pump shell is fixedly connected with a pump cover, and the left side of the pump cover is provided with a first inlet. Through the fixing device setting, rotate when first motor, thereby drive the second screw rod and rotate, make the impeller rotate, thereby be carry corrosive liquid from first import, under impeller pivoted atmospheric pressure effect, make corrosive liquid flow from the second export, cooperation spring shim and spring play absorbing effect when first motor is rotatory, solved traditional impeller and can't dismantle, and manufacturing cost is high, reaches the effect of conveniently dismantling the impeller, reduction in production cost.

Description

Centrifugal pump with anti-corrosion structure

Technical Field

The utility model relates to the technical field of centrifugal pumps, in particular to a centrifugal pump with an anti-corrosion structure.

Background

The centrifugal pump has various forms such as vertical type, horizontal type, single stage, multistage, single suction, double suction, self suction and the like. Centrifugal pumps operate by causing water to move centrifugally as a result of the rotation of an impeller. Before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to rotate at a high speed, the water is thrown to the outer edge of the impeller to be thrown into a water pressure pipeline of the water pump through a flow channel of the volute-shaped pump shell. Decentering is in fact a manifestation of the inertia of an object, such as a water droplet on an umbrella, which rotates with the umbrella when it rotates slowly, because the friction between the umbrella and the water droplet acts as a centripetal force to the water droplet. However, if the umbrella is rotated faster, the friction is not enough to make the water drop move circularly, then the water drop will leave the umbrella and move to the outer edge, like pulling a rope to pull a stone to move circularly, if the speed is too fast, the rope will break, the stone will fly out, which is called centrifugation; centrifugal pumps have very wide application in production and life; the centrifugal pump in the prior art has a complex structure, the impeller of the centrifugal pump is inconvenient to disassemble, the secondary use is influenced, the manufacturing cost is high, and the pump is easy to rust, so that the centrifugal pump with an anti-corrosion structure is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a centrifugal pump with an anti-corrosion structure, which achieves the aim of mechanical corrosion resistance.

In order to achieve the purpose, the utility model provides the following technical scheme: a centrifugal pump with an anti-corrosion structure comprises a first motor, wherein the output end of the first motor is fixedly connected with a pump shaft through a coupler, the left part of the coupler is fixedly connected with a support, the left part of the support is fixedly connected with a pump shell, the left part of the pump shell is fixedly connected with a pump cover, the left side of the pump cover is provided with a first inlet, the top of the pump cover is provided with a second outlet, the inner part of the pump shell is rotatably connected with a pump shaft, the outer wall of the pump shaft is fixedly sleeved with a shaft sleeve, the right part of the shaft sleeve is fixedly connected with the pump shell, the outer wall of the shaft sleeve is provided with inner magnetism, the outer wall of the pump shaft is provided with a fixing device, the fixing device comprises a threaded hole, a first screw, a second screw, a spring gasket, a nut, a spring, an impeller and a sealing ring, the threaded hole is formed in the outer wall of the pump shaft, and the outer wall of the first screw is in threaded connection with the inner wall of the threaded hole, the right part of second screw rod and the left part fixed connection of first screw rod, impeller threaded connection is on the second screw rod, the left part of interior magnetism is connected with the right part contact of impeller, the right part of sealing washer is connected with the left part contact of pump shaft, the right part of spring is connected with the left part contact of sealing washer, the right part of spring gasket is connected with the left part contact of spring, the right part of nut and the left part swing joint of spring gasket.

Preferably, the pump cover, the impeller and the shaft sleeve are all formed by integrally sintering and pressing the metal inserts wrapped with the fluoroplastics.

Preferably, a second bearing is arranged on the lower side of the pump shell, and a double-sided tape dustproof cover is arranged on the outer wall of the second bearing.

Preferably, the side wall of the second outlet is provided with a cast steel reinforcing rib which is triangular.

Preferably, a motor protective cover is sleeved on the outer wall of the first motor, and a brass sheet material is arranged inside the motor protective cover.

Preferably, the pump shell is provided with a metal shell lining made of fluorinated ethylene propylene.

The utility model provides a centrifugal pump with an anti-corrosion structure. The method has the following beneficial effects:

1. according to the utility model, through the arrangement of the fixing device, when the first motor rotates, the second screw rod is driven to rotate, the impeller is driven to rotate, so that corrosive liquid is conveyed from the first inlet, and flows out from the second outlet under the action of air pressure generated by rotation of the impeller, and the spring gasket and the spring are matched to play a role in damping when the first motor rotates, so that the problems that the traditional impeller cannot be disassembled and is high in production cost are solved, the effect of conveniently disassembling the impeller is achieved, and the production cost is reduced.

2. The cast steel reinforcing ribs are arranged on the side wall of the second outlet, so that the pump shell and the side wall of the second inlet and the second outlet are stabilized, the problem that the traditional pump is not firm is solved, the production cost is reduced, and the practicability and the economy are high.

Drawings

FIG. 1 is a front view of the present invention.

Fig. 2 is a front view of the fixing device of the present invention.

Fig. 3 is a cross-sectional view of an impeller of the present invention.

Fig. 4 is a top view of the spring washer of the present invention.

Fig. 5 is a front view of the first and second screws of the present invention.

In the figure: 1. a first motor; 2. a second bearing; 3. a coupling; 4. a pump shaft; 5. internal magnetism; 6. A support; 7. a pump housing; 8. a pump cover; 9. a fixing device; 901. a threaded hole; 902. a first screw; 903. A second screw; 904. a spring washer; 905. a nut; 906. a spring; 907. an impeller; 908. a seal ring; 10. a second outlet; 12. a shaft sleeve; 15. a double-sided tape dust cap; 16. casting a steel body reinforcing rib; 17. A first inlet; 18. a motor shroud.

Detailed Description

As shown in fig. 1 to 5, the present invention provides a technical solution: a centrifugal pump with an anti-corrosion structure comprises a first motor 1, a motor protective cover 18 is sleeved on the outer wall of the first motor 1, a brass sheet material is arranged inside the motor protective cover 18, corrosion of corrosive liquid to the first motor 1 in work is avoided, durability of use is guaranteed, an output end of the first motor 1 is fixedly connected with a pump shaft 4 through a coupler 3, a left part of the coupler 3 is fixedly connected with a support 6, a left part of the support 6 is fixedly connected with a pump shell 7, a lower side of the pump shell 7 is provided with a second bearing 2, the outer wall of the second bearing 2 is provided with a double-sided dustproof cover 15, when the centrifugal pump is used, the double-sided dustproof cover 15 plays a role in preventing dust and preventing the effect of the corrosion-resistant liquid, lubricant is added inside, lubricant does not need to be added after the use, the left part of the pump shell 7 is fixedly connected with a pump cover 8, the pump cover 8, an impeller 907 and the shaft sleeve 12 are all formed by integrally sintering and pressing metal insert outer-coated with fluoroplastic, the corrosion of corrosive liquid to the pump cover 8, the impeller 14 and the shaft sleeve 12 is avoided, the durability of the use of the pump cover 8, the impeller 14 and the shaft sleeve 12 is ensured, the left side of the pump cover 8 is provided with a first inlet 17, the top of the pump cover 8 is provided with a second outlet 10, the side wall of the second outlet 10 is provided with cast steel reinforcing ribs 16, the cast steel reinforcing ribs 16 are triangular, the cast steel reinforcing ribs 16 are arranged through the side wall of the second outlet 10, the pump shell 7 and the side wall of the second inlet 10 are favorably stabilized, the infirm of the traditional pump is solved, the production cost is reduced, the pump cover has high practicability and economy, the pump shaft 4 is rotatably connected inside the pump shell 7, the shaft sleeve 12 is fixedly sleeved on the outer wall of the pump shaft 4, the pump shell 7 is fixedly connected on the right part of the shaft sleeve 12, the inner magnet 5 is arranged on the outer wall of the shaft sleeve 12, the pump shell 7 is arranged as a metal shell liner fluorinated ethylene propylene, and when the impeller 907 drives the corrosive liquid to rotate, the corrosion of corrosive liquid to the pump shell 7 is avoided, the fixing device 9 is arranged on the outer wall of the pump shaft 4, the fixing device 9 is arranged, when the first motor 1 rotates 902 to rotate, the second screw rod 903 is driven to rotate, the impeller 907 rotates, so that the corrosive liquid is conveyed from the first inlet 17, under the action of air pressure generated by rotation of the impeller 907, the corrosive liquid flows out from the second outlet 10, so that the corrosive liquid is conveyed, the spring gasket 904 and the spring 906 are matched to play a role in damping when the first motor 1 rotates, the problem that the traditional impeller 907 cannot be disassembled is solved, the production cost is high, the impeller 907 is convenient to disassemble is achieved, the production cost is reduced, the fixing device 9 comprises a threaded hole 901, a first screw rod 902, a second screw rod 903, a spring gasket 904, a nut 905, a spring 906, the impeller 907 and a sealing ring 908, and the threaded hole 901 is arranged on the outer wall of the pump shaft 4, the outer wall of the first screw 902 is in threaded connection with the inner wall of the threaded hole 901, the right portion of the second threaded rod 903 is fixedly connected with the left portion of the first screw 902, the impeller 907 is in threaded connection with the second screw 903, the left portion of the inner magnet 5 is in contact connection with the right portion of the impeller 907, the right portion of the sealing ring 908 is in contact connection with the left portion of the pump shaft 4, the right portion of the spring 906 is in contact connection with the left portion of the sealing ring 908, when the impeller 907 rotates and drives corrosive liquid to rotate, corrosion of the pump shaft 4 and the shaft sleeve 12 by the corrosive liquid is prevented, the right portion of the spring gasket 904 is in contact connection with the left portion of the spring 906, and the right portion of the nut 905 is in movable contact with the left portion of the spring gasket 904.

When in use, the output end of the first motor 1 is fixedly connected with a pump shaft 4 through a coupling 3, when the first motor 1 rotates, the pump shaft 4 is driven to rotate, thereby driving the first screw 902 to rotate, thereby driving the second screw 903 to rotate, causing the impeller 907 to rotate, thereby conveying the corrosive liquid from the first inlet 17, the corrosive liquid flows out from the second outlet 10 under the action of the air pressure generated by the rotation of the impeller 907, and the spring gasket 904 and the spring 906 are matched to play a role of shock absorption when the first motor 1 rotates, so that the effect of conveniently disassembling the impeller is achieved, when setting up to the metal casing inside lining at pump case 7 and gathering perfluoroethylene propylene, have fine anticorrosion effect, first motor 1 is in the work, and second export 10 lateral walls are equipped with cast steel body strengthening rib 16, are favorable to firm pump case 7 and second import and export 10 lateral walls, and reduction in production cost has very high practicality and economic nature.

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

Claims

1. A centrifugal pump with a corrosion prevention structure, comprising a first electric motor (1), characterized in that: the output end of the first motor (1) is fixedly connected with a pump shaft (4) through a coupling (3), the left part of the coupling (3) is fixedly connected with a support (6), the left part of the support (6) is fixedly connected with a pump shell (7), the left part of the pump shell (7) is fixedly connected with a pump cover (8), the left side of the pump cover (8) is provided with a first inlet (17), the top of the pump cover (8) is provided with a second outlet (10), the inside of the pump shell (7) is rotatably connected with the pump shaft (4), the outer wall of the pump shaft (4) is fixedly sleeved with a shaft sleeve (12), the right part of the shaft sleeve (12) is fixedly connected with the pump shell (7), the outer wall of the shaft sleeve (12) is provided with an inner magnet (5), the outer wall of the pump shaft (4) is provided with a fixing device (9), and the fixing device (9) comprises a threaded hole (901) and a first screw rod (902), a second screw rod (903), a spring gasket (904), a nut (905), a spring (906), an impeller (907) and a sealing ring (908), the threaded hole (901) is arranged on the outer wall of the pump shaft (4), the outer wall of the first screw (902) is in threaded connection with the inner wall of the threaded hole (901), the right part of the second screw rod (903) is fixedly connected with the left part of the first screw rod (902), the impeller (907) is in threaded connection with the second screw rod (903), the left part of the inner magnet (5) is in contact connection with the right part of the impeller (907), the right part of the sealing ring (908) is in contact connection with the left part of the pump shaft (4), the right part of the spring (906) is in contact connection with the left part of the sealing ring (908), the right part of the spring washer (904) is in contact connection with the left part of the spring (906), the right part of the nut (905) is movably contacted with the left part of the spring gasket (904).

2. A centrifugal pump having a corrosion prevention structure according to claim 1, characterized in that: the pump cover (8), the impeller (907) and the shaft sleeve (12) are all formed by integrally sintering and pressing a metal insert coated with fluoroplastic.

3. A centrifugal pump having a corrosion prevention structure according to claim 1, characterized in that: a second bearing (2) is arranged on the lower side of the pump shell (7), and a double-sided tape dustproof cover (15) is arranged on the outer wall of the second bearing (2).

4. A centrifugal pump having a corrosion prevention structure according to claim 1, characterized in that: and cast steel body reinforcing ribs (16) are arranged on the side wall of the second outlet (10), and the cast steel body reinforcing ribs (16) are triangular.

5. A centrifugal pump having a corrosion prevention structure according to claim 1, characterized in that: the outer wall of the first motor (1) is sleeved with a motor protective cover (18), and a brass sheet material is arranged inside the motor protective cover (18).

6. A centrifugal pump having a corrosion prevention structure according to claim 1, characterized in that: the pump shell (7) is provided with a metal shell liner made of fluorinated ethylene propylene.