Magnetic submerged pump convenient to disassemble and assemble

Abstract

The utility model discloses a magnetic submerged pump convenient to disassemble and assemble. The magnetic submerged pump comprises a motor, a base plate, a driving shaft, a magnetic transmission assembly, a pump body, a pump shaft, an impeller and a liquid outlet assembly, wherein the upper end of the liquid outlet assembly is installed on the base plate, and the lower end of the liquid outlet assembly is connected with a liquid outlet of the pump body. A petal-shaped concave-convex matching spigot convenient to disassemble and assemble is arranged between the pump cover and the pump body. A sub-assembly composed of the support, the driving shaft, the magnetic transmission assembly, the pump shaft, the pump cover, the impeller and the like can be integrally disassembled, and a sub-assembly composed of the coupler, the driving shaft, the outer magnetic rotor assembly and the like can also be integrally disassembled. When a certain part of parts need to be maintained, the corresponding sub-assembly bodies can be detached. The magnetic submerged pump can solve the problems that when an existing magnetic submerged pump is overhauled, the disassembly and assembly process is complex, efficiency is low, and when the outer magnetic rotor assembly and the inner magnetic rotor assembly are disassembled, the magnetic force is possibly released suddenly, and damage is caused to maintainers.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of submersible pump, specifically relates to a magnetic submersible pump which is convenient to disassemble and assemble. BACKGROUND

[0002] The magnetic submersible pump is a vertical pump which submerges flow components such as impeller and pump body in the material to be transported and realizes liquid transportation through magnetic transmission. As a kind of leakage-free and high-efficiency fluid transportation equipment, the magnetic submersible pump is widely applied in chemical industry, medicine, electronics and other fields. However, due to its special magnetic driving structure and special application scene, the disassembly thereof is more complicated than traditional pumps, and the disassembled parts need to be recorded in the order of installation and disassembly for subsequent reassembly. In addition, in order to avoid the sudden release of magnetic force causing harm to the maintenance personnel when disassembling the outer magnetic rotor assembly and the inner magnetic rotor assembly, the maintenance personnel need to have high professional skills. SUMMARY

[0003] The utility model provides a magnetic submersible pump convenient to disassemble and assemble, which aims to solve the problems of complicated disassembly process, low efficiency and harm to maintenance personnel caused by the sudden release of magnetic force when disassembling the outer magnetic rotor assembly and the inner magnetic rotor assembly of the existing magnetic submersible pump.

[0004] The utility model technical scheme is as follows:

[0005] A magnetic submersible pump convenient to disassemble and assemble, comprising a motor, a base plate, a drive shaft, a magnetic transmission assembly, a pump body, a pump shaft, an impeller and a liquid outlet assembly installed on the upper end of the base plate and connected with the liquid outlet of the pump body.

[0006] The base plate is located above the pump body, and the motor is installed on the base plate through a support. The output shaft of the motor is connected with the upper end of the drive shaft through a shaft coupling, and then sequentially connected with the pump shaft through the drive shaft and the magnetic transmission assembly. The pump shaft is installed on the pump cover through a sliding bearing assembly, and the pump cover is installed on the pump body and located inside the cylinder. The base plate and the pump body are connected through the cylinder. The magnetic transmission assembly comprises an isolation sleeve assembly installed on the upper end of the pump cover, an inner magnetic rotor assembly installed on the upper end of the pump shaft and located inside the isolation sleeve assembly, and an outer magnetic rotor assembly installed on the lower end of the drive shaft and located outside the isolation sleeve. The outer magnetic rotor assembly and the inner magnetic rotor assembly are located in corresponding positions.

[0007] The upper end of the pump cover is sequentially connected with a connecting body and a support pipe, and the upper end of the support pipe is fixedly connected with the bottom plate of the support. The magnetic transmission assembly is located in the connecting body.

[0008] The inner side of the support pipe is provided with a connecting pipe, the connecting pipe is fixed on the support base plate through the stop structure of the bottom of the bearing seat of the upper end and the bolt, and the outer circular surface of the lower end of the connecting pipe is matched with the inner hole of the lower end of the support pipe.

[0009] The outer circular surface of the pump cover is provided with a petal-shaped convex stop, the inner cavity of the pump body is provided with a recessed stop matched with the convex stop and an annular groove located below the recessed stop.

[0010] Specifically, the driving shaft is rotatably connected with the upper end of the connecting pipe through the first bearing installed in the bearing seat, and the first bearing is tightly installed in the bearing seat of the upper end of the connecting pipe through the bearing cover of the upper end.

[0011] Specifically, the lower end of the driving shaft is fixedly connected with a driving disc, and the outer magnetic rotor assembly is fixedly connected on the driving disc.

[0012] Specifically, the driving shaft is rotatably connected with the lower end of the connecting pipe through the second bearing of the upper end of the driving disc; and the second bearing is installed in the recess of the lower end of the connecting pipe.

[0013] Further, the annular groove is provided with a limiting structure for limiting the limit rotating position of the convex stop.

[0014] Compared with the prior art, the utility model has the following positive effects:

[0015] (1) By setting the recessed and convex stop structure between the pump body and the pump cover, the quick disassembly of the two is realized, so that the support, the driving shaft, the bearing, the bearing cover, the magnetic transmission assembly, the pump shaft, the pump cover and the impeller can be integrally disassembled, the steps of disassembly and reassembly are greatly simplified, and the maintenance efficiency is improved.

[0016] (2) The utility model sets the matching mode between the lower end of the connecting pipe and the support pipe as the shaft hole matching, which not only provides stable support for the connecting pipe and the driving shaft, but also enables the driving shaft, the support pipe and the outer magnetic rotor assembly to be independently disassembled as a whole without disconnecting the connection at the lower end of the connecting pipe during disassembly, so that the personnel injury caused by the sudden release of magnetic force during the disassembly of the outer magnetic rotor assembly and the inner magnetic rotor assembly is avoided.

[0017] (3) The bearing seat integrally arranged with the upper end of the connecting pipe and the first bearing fixed in the bearing seat through the bearing cover realize the stable connection of the driving shaft and the upper end of the connecting pipe, improve the transmission efficiency and stability, and facilitate disassembly and maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic view of the magnetic liquid pump structure of the utility model for facilitating disassembly and assembly;

[0019] Figure 2 It isFigure 1 Partial enlarged view of the middle A node;

[0020] Figure 3 For Figure 1 Partial enlarged view of the middle B node;

[0021] Figure 4 For Figure 1 Partial enlarged view of the middle C node;

[0022] Figure 5 The matching concave stop notch section view of the end part of the pump body of the utility model;

[0023] Figure 6 The matching convex stop notch section view of the end part of the pump cover of the utility model.

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] 1, motor; 2, support; 3, base plate; 4, drive shaft; 5, first bearing; 6, bearing cover; 7, connecting pipe; 7-1, bearing seat; 8, support pipe; 9, cylinder; 10, connecting body; 11, second bearing; 12, drive disc; 13, outer magnetic rotor assembly; 14, inner magnetic rotor assembly; 15, first thrust disc assembly; 16, isolation sleeve assembly; 17, pump shaft; 18, first sliding bearing assembly; 19, pump cover; 19-1, convex stop notch; 20, impeller; 21, pump body; 21-1, concave stop notch; 23, second thrust disc assembly; 24, second sliding bearing assembly. DETAILED DESCRIPTION

[0026] The technical scheme and technical effects of the utility model will be described in detail below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all.

[0027] As Figures 1-4 A magnetic submersible pump convenient to disassemble, comprising motor 1, base plate 3, drive shaft 4, magnetic transmission assembly, pump body 21, pump shaft 17, impeller 20 and liquid outlet assembly installed on the base plate 3 and connected with the liquid outlet of the pump body 21.

[0028] The substrate 3 is located above the pump body 21, and the motor 1 is installed on the substrate 3 through the support 2. The output shaft of the motor 1 is connected with the upper end of the drive shaft 4 through the shaft coupling, and is in driving connection with the pump shaft 17 through the drive shaft 4 and the magnetic transmission assembly in turn. The substrate 3 is connected with the pump body 21 through the cylinder 9. The flange structures at the connection positions of the cylinder 9 with the substrate 3 and the pump body 21 are all provided with sealing rings for preventing liquid from entering the cylinder 9. The pump cover 19 is installed on the upper end of the pump body 21. The pump cover 19 is located inside the cylinder 9, and the upper end of the pump cover 19 is connected with the connecting body 10 and the support pipe 8 in turn. The connecting body 10 and the support pipe 8 are connected through the flange structure. The inner side of the support pipe 8 is provided with the connecting pipe 7.

[0029] As Figure 5 and Figure 6 , the pump cover 19 and the pump body 21 are rotationally engaged through the matched concave-convex stop 19-1 facilitating disassembly and assembly. The outer cylindrical surface of the pump cover 19 is provided with petal-shaped convex stop 19-1, and the inner cavity of the pump body 21 is provided with concave stop 21-1 matched with the convex stop 19-1 and annular groove located below the concave stop 21-1. The annular groove is provided with limiting structure for limiting the limit rotating position of the convex stop 19-1. During installation, the convex stop 19-1 is passed through the concave stop 21-1 downward and rotated by a certain angle, so that the convex part of the convex stop 19-1 is staggered with the groove of the concave stop 21-1, and the close connection is realized. During disassembly, only need to rotate in the opposite direction by a certain angle, so that the convex part corresponds to the groove, and the lock is released.

[0030] As Figure 2 , the drive shaft 4 is rotationally connected with the upper end of the connecting pipe 7 through the first bearing 5 on the upper end thereof. The first bearing 5 is tightly installed in the bearing seat 7-1 on the upper end of the connecting pipe 7 through the bearing cover 6 on the upper end. The bottom of the bearing seat 7-1 is fixedly connected with the bottom plate of the support 2 through the stop structure and bolts. The upper end of the support pipe 8 is fixedly connected with the bottom plate of the support 2.

[0031] As Figure 3 , the magnetic transmission assembly includes the isolation sleeve assembly 16 installed on the upper end of the pump cover 19, the inner magnetic rotor assembly 14 installed on the upper end of the pump shaft 17 and located inside the isolation sleeve assembly 16, and the outer magnetic rotor assembly 13 installed on the lower end of the drive shaft 4 and located outside the isolation sleeve. The outer magnetic rotor assembly 13 corresponds in position to the inner magnetic rotor assembly 14. The magnetic transmission assembly is located in the connecting body 10. The outer magnetic rotor assembly 13 is fixed on the lower end of the drive shaft 4 through the driving disc 12.

[0032] The driving shaft 4 is rotatably connected with the lower end of the connecting pipe 7 through the second bearing 11 on the upper end of the driving disc 12.

[0033] The first bearing 5 and the second bearing 11 are used for keeping the stability of the driving shaft 4, reducing vibration and noise.

[0034] As shown in Figure 3 and Figure 4 , the pump shaft 17 is installed on the pump cover 19 through the first sliding bearing assembly 18 and the second sliding bearing assembly 23 below the first sliding bearing assembly 18. The sliding bearing assembly comprises a shaft bushing installed on the pump shaft 17 through an expansion sleeve and a sliding sleeve installed on the pump cover 19, and the sliding sleeve and the shaft bushing are in sliding fit.

[0035] The pump shaft 17 is further provided with the first thrust disc assembly 15 between the first sliding bearing assembly 18 and the inner magnetic rotor assembly 14 and the second thrust disc assembly 22 between the second sliding bearing assembly 23 and the impeller 20, and the two are used for bearing the axial force when the pump shaft 17 moves.

[0036] As shown in Figure 4 , the impeller 20 is installed on the pump shaft 17 and located in the pump body 21, and rotates at high speed under the driving of the motor 1, and uses a centrifuge to transport the liquid at the lower end inlet of the pump body 21 from the side outlet.

[0037] The pump body 21 adopts a rear door opening design, and the rotor part can be withdrawn for maintenance without moving the pump body 21, so that the difficulty of maintenance is greatly reduced and the work efficiency is improved.

[0038] When the driving shaft 4, the magnetic transmission assembly, the pump cover 19 or the impeller 20 needs to be repaired, the motor 1 is removed, the bolts of the bottom plate of the support 2 and the base plate 3 are loosened, the support 2 is reversely rotated, the convex stop 19-1 corresponds to the concave stop 21-1, the pump cover 19 and the pump body 21 are unlocked, and the sub-assembly composed of the support 2, the driving shaft 4, the connecting pipe 7, the supporting pipe 8, the connecting body 10, the magnetic transmission assembly, the pump shaft 17, the pump cover 19 and the impeller 20 can be integrally disassembled.

[0039] When the outer magnetic rotor assembly 13 or the driving shaft 4 needs to be repaired, the motor 1 is removed, the bolts of the bearing seat 7-1 and the bottom plate of the support 2 are loosened, and the sub-assembly composed of the coupling, the driving shaft 4, the connecting pipe 7 and the outer magnetic rotor assembly 13 can be integrally disassembled.

[0040] It should be noted that, for those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. The scope of the utility model is defined by the claims rather than the above description.

Claims

1. A magnetic submersible pump convenient to disassemble, comprising a motor (1), a base plate (3), a driving shaft (4), a magnetic transmission assembly, a pump body (21), a pump shaft (17), an impeller (20), and a liquid outlet assembly mounted on the base plate (3) at the upper end and connected with a liquid outlet of the pump body (21) at the lower end; The base plate (3) is located above the pump body (21), the motor (1) is mounted on the base plate (3) through a support (2); the output shaft of the motor (1) is connected with the upper end of the driving shaft (4) through a shaft coupling, then sequentially connected with the pump shaft (17) through the driving shaft (4) and the magnetic transmission assembly, the pump shaft (17) is mounted on the pump cover (19) through a sliding bearing assembly, the pump cover (19) is mounted on the pump body (21) and located inside the cylinder (9); the base plate (3) is connected with the pump body (21) through the cylinder (9); the magnetic transmission assembly comprises an isolation sleeve assembly (16) mounted on the upper end of the pump cover (19), an inner magnetic rotor assembly (14) mounted on the upper end of the pump shaft (17) and located inside the isolation sleeve assembly (16), and an outer magnetic rotor assembly (13) mounted on the lower end of the driving shaft (4) and located outside the isolation sleeve; the outer magnetic rotor assembly (13) corresponds to the position of the inner magnetic rotor assembly (14); Characterized in that: The upper end of the pump cover (19) is sequentially connected with a connecting body (10) and a support tube (8), the upper end of the support tube (8) is fixedly connected with the bottom plate of the support (2); the magnetic transmission assembly is located in the connecting body (10); The inner side of the support tube (8) is provided with a connecting tube (7), the connecting tube (7) is fixedly connected on the bottom plate of the support (2) through the stop structure at the bottom of the bearing seat (7-1) at the upper end and bolts, the outer circular surface at the lower end of the connecting tube (7) is matched with the inner hole at the lower end of the support tube (8); The outer circular surface of the pump cover (19) is provided with a petal-shaped convex stop (19-1), the inner cavity of the pump body (21) is provided with a concave stop (21-1) matched with the convex stop (19-1) and an annular groove located below the concave stop (21-1).

2. The magnetic submersible pump of easy assembly and disassembly according to claim 1, characterized in that: The lower end of the driving shaft (4) is fixedly connected with the driving disc (12), the outer magnetic rotor assembly (13) is fixedly connected on the driving disc (12).

3. The magnetic submersible pump of easy assembly and disassembly of claim 1, characterized in that: The lower end of the driving shaft (4) is rotatably connected with the lower end of the connecting tube (7) through the second bearing (11) at the upper end of the driving disc (12); the second bearing (11) is installed in the groove at the lower end of the connecting tube (7).

4. The magnetic submersible pump of easy assembly and disassembly according to claim 3, characterized in that: The annular groove is provided with a limiting structure for limiting the limit rotating position of the convex stop (19-1).

5. The magnetic submersible pump of easy assembly and disassembly of claim 1, characterized in that: ​

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