A compound magnetic drive centrifugal pump

Abstract

The present invention discloses a compound magnetic drive centrifugal pump, which includes a support base and a magnetic centrifugal pump body. An external protection component is provided at the connection between the output end of the magnetic centrifugal pump body and the pipeline. The protection component includes a first protective sleeve and a second protective sleeve. A combined disc is fixedly connected to the top of the second protective sleeve, and a plurality of insertion blocks are fixedly connected to one side of the second protective sleeve. The first protective sleeve includes a first protective sleeve body, and an inner sleeve plate is fixedly connected to the inside of the first protective sleeve body. It relates to the technical field of magnetic centrifugal pumps, solves the technical problems that the connection between the pump body and the pipeline is not tightly sealed, which is likely to cause freezing in cold weather, and secondly, the large volume is inconvenient for carrying the pump body. Through the provided protection component, the protection component is used to carry out heat preservation and anti-freezing treatment on the connection between the output end of the magnetic centrifugal pump body and the pipeline, avoiding the influence on the subsequent use of the pump body and the pipeline caused by freezing due to weak sealing.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic centrifugal pumps, and particularly to a compound magnetic drive centrifugal pump. Background Art

[0002] Magnetic drive technology is a new type of coupling drive technology that comprehensively applies the integrated technologies of machinery, materials, electromagnetic induction, and control. A magnetic drive centrifugal pump mainly consists of components such as a pump body, an impeller, an outer magnetic rotor, an inner magnetic rotor, a shield, a pump shaft, and a motor. Currently, the development trend of magnetic pumps is from low power to high power. With the development of new materials with high strength, wear resistance, and high temperature resistance, it is inevitable to develop heavy-duty magnetic pumps with high temperature, large flow rate, and corrosion resistance.

[0003] When the existing magnetic pumps are in use, there is a problem of poor sealing when the pipeline connected to the outside of the pump body is connected to the pump body itself. Therefore, there is a leakage situation during use. When used in cold weather, the leaked water is likely to cause freezing at the pipeline connection, which will further affect the subsequent use of the magnetic pump and the pipeline. Secondly, due to the large volume of the magnetic pump itself, it is inconvenient to carry the magnetic pump during handling. Summary of the Invention

[0004] The purpose of the present invention is to provide a compound magnetic drive centrifugal pump to solve the following technical problems:

[0005] The connection between the pump body and the pipeline has poor sealing, resulting in easy freezing in cold weather. Secondly, the large volume makes it inconvenient to carry the pump body.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A compound magnetic drive centrifugal pump includes a support base and a magnetic centrifugal pump body. The magnetic centrifugal pump body is based on the existing centrifugal pump and magnetic coupling. Secondly, a cylindrical magnetic drive coupling is proposed for the magnetic coupling, which mainly consists of an inner magnetic rotor, an outer magnetic rotor, and an isolation sleeve. The magnetic field of the cylindrical arranged and combined magnetic circuit is simultaneously affected by attractive force and tensile force. The magnetic steel utilization rate of the magnetic drive coupling is high, and the transmission torque obtained by the permanent magnet per unit volume is relatively large. The designed structure of the magnetic drive centrifugal pump is compact. The isolation cover is directly fastened to the pump shell, and the transported medium is separated from the outside through a static seal, achieving no shaft seal and complete leakage-free. According to the working characteristics and performance requirements of the centrifugal pump, the structure of the magnetic drive centrifugal pump is designed. Utilizing the technical advantages of magnetic non-contact transmission, the dynamic seal structure of the traditional shaft transmission power is transformed into a static seal structure, realizing flexible non-contact power transmission between the motor and the pump wheel main shaft. An external protective component is provided at the connection between the output end of the magnetic centrifugal pump body and the pipeline. The protective component is used to insulate the pipeline connection. The magnetic centrifugal pump body has the following mechanical characteristics: flexible connection between the motor shaft and the load shaft; tolerance of misalignment error to reduce system vibration; when jammed or overloaded, no "stalling" phenomenon occurs at the motor end to avoid motor damage; after the motor starts, the load gradually increases to reduce the motor starting current and achieve soft start; during the shutdown process, it has the characteristic of soft stop; completely leakage-free;

[0008] The protective component includes a first protective sleeve and a second protective sleeve. The internal structures of the first protective sleeve and the second protective sleeve are the same with individual differences. A combined disc is fixedly connected to the top of the second protective sleeve. A plurality of plug-in blocks are fixedly connected to one side of the second protective sleeve. The plug-in blocks cooperate with plug-in holes to complete the installation of the first protective sleeve and the second protective sleeve. The first protective sleeve includes a protective sleeve body one. An inner sleeve plate is fixedly connected inside the protective sleeve body one. A plurality of heating tubes are fixedly connected inside the cavity formed by the inner sleeve plate and the protective sleeve body one. The leaked water is heated and evaporated by the heating tubes arranged inside the cavity. Secondly, the heating of the heating tubes can achieve heat preservation and anti-freezing work at the connection, improving the overall working safety. A storage battery is fixedly connected to the top of the heating tube. An installation seat is arranged at the bottom of the heating tube. A sliding disc is slidably connected inside the installation seat. The sliding disc moves under the buoyancy of water.

[0009] As a further scheme of the present invention: A plurality of water injection holes are opened outside the installation seat. A plurality of stoppers are fixedly connected to the bottom of the inner cavity of the installation seat. A conduction wire is fixedly connected to the top of the sliding disc, and a conduction piece is fixedly connected to the top of the conduction wire. The conduction piece is used to conduct with the heating tube to form a complete circuit to promote the work of the heating tube.

[0010] As a further solution of the present invention: a fixed disc is fixedly connected to the top of the protective sleeve main body, a plurality of through holes are opened on the surface of the inner sleeve plate, a plurality of plug-in holes are opened on one side of the fixed disc, the diameter of the plug-in holes matches the diameter of the plug-in blocks, and sealing gaskets are fixedly connected to the surfaces of the plug-in holes, and the plug-in holes are used to strengthen the sealing of the installed plug-in blocks and the plug-in holes.

[0011] As a further solution of the present invention: a plurality of movable components are fixedly connected to the bottom of the support base, and two of the movable components are connected via a linkage shaft transmission. The movable component includes an outer support shell fixedly connected to the support base, an inner cavity of the outer support shell is rotatably connected to a worm, one side of the worm is meshingly connected to a worm wheel, one side of the worm wheel is fixedly connected to the linkage shaft, and the other side of the linkage shaft is fixedly connected to another worm wheel, and one side of the worm wheel is meshingly connected to a lifting rod.

[0012] As a further solution of the present invention: a moving wheel is arranged at the bottom of the lifting rod, a limiting rod is fixedly connected to one side of the lifting rod, a limiting groove is opened on one side of the outer support shell, and the limiting rod is slidably connected to the limiting groove.

[0013] As a further solution of the present invention: the top of the support base is movably connected with a mounting plate, and a plurality of mounting bolt holes are opened on the surface of the mounting plate, which are fixed to the bottom of the magnetic centrifugal pump body by bolts through the mounting bolt holes, and a plurality of shock-absorbing blocks are arranged inside the support base, and a damper is arranged inside the shock-absorbing blocks. The shock-absorbing blocks are used to reduce the vibration generated during the operation of the magnetic centrifugal pump body, thereby improving the working stability of the magnetic centrifugal pump body.

[0014] Beneficial effects of the present invention:

[0015] 1. Through the protection components set up, the output end of the magnetic centrifugal pump body and the pipe connection are treated with warmth and antifreeze, so as to avoid leakage caused by poor sealing and freezing, which will affect the subsequent use of the pump body and pipes;

[0016] 2. The vibration of the magnetic centrifugal pump body during operation can be reduced by setting the shock-absorbing block. Secondly, the setting of the mobile component can facilitate the overall handling work. At the same time, the mobile component can be used to support the entire support base. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the magnetic centrifugal pump of the present invention;

[0019] Figure 2It is a schematic diagram of the explosion structure of the support base of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the protection component of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the first protective sleeve of the present invention;

[0022] Figure 5 It is a schematic diagram of the sectional structure of the first protective sleeve of the present invention;

[0023] Figure 6 It is the present invention Figure 5 A magnified schematic diagram of the structure at A in;

[0024] Figure 7 It is a schematic diagram of the sectional structure of the second protective sleeve of the present invention;

[0025] Figure 8 It is a schematic diagram of the inclined structure of the support base of the present invention;

[0026] Figure 9 It is a schematic diagram of the sectional structure of the moving component of the present invention.

[0027] In the figure: 1. Support base; 2. Magnetic centrifugal pump body; 3. Protection component; 301. First protective sleeve; 302. Second protective sleeve; 303. Combined disc; 304. Plug-in block; 311. Protective sleeve main body one; 312. Inner sleeve plate; 313. Fixed disc; 314. Heating pipe; 315. Storage battery; 316. Mounting seat; 317. Water injection hole; 318. Sliding disc; 319. Conducting wire; 320. Stopper; 321. Plug-in hole; 322. Sealing gasket; 323. Through hole; 4. Moving component; 401. Outer support housing; 402. Worm; 403. Worm gear; 404. Lifting rod; 405. Moving wheel; 406. Limiting rod; 407. Limiting groove; 5. Mounting plate; 6. Mounting bolt hole; 7. Shock absorber; 8. Linking shaft. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0029] Embodiment 1

[0030] Please refer to Figure 1 and Figures 3 to 7As shown in the figure, the present invention is a compound magnetic drive centrifugal pump, including a support base 1 and a magnetic centrifugal pump body 2. The magnetic centrifugal pump body 2 is based on the existing centrifugal pump and magnetic coupling. Secondly, a cylindrical magnetic drive coupling is proposed for the magnetic coupling, which mainly consists of an inner magnetic rotor, an outer magnetic rotor, and an isolation sleeve. The magnetic field of the cylindrical arranged and combined magnetic circuit is simultaneously affected by attractive force and tensile force. The magnetic steel utilization rate of the magnetic drive coupling is high, and the transmission torque obtained by the permanent magnet per unit volume is relatively large. The designed structure of the magnetic drive centrifugal pump is compact. The isolation cover is directly fastened to the pump shell, and the conveying medium is separated from the outside through a static seal form, achieving no shaft seal and complete leakage. According to the working characteristics and performance requirements of the centrifugal pump, the structure of the magnetic drive centrifugal pump is designed. Utilizing the advantages of magnetic non-contact drive technology, the dynamic seal structure of the traditional shaft transmission power is transformed into a static seal structure, realizing the flexible non-contact transmission of power between the motor and the pump wheel main shaft. An external protection component 3 is provided at the connection between the output end of the magnetic centrifugal pump body 2 and the pipeline. The protection component 3 is used to insulate the pipeline connection. The magnetic centrifugal pump body 2 has the following mechanical characteristics: flexible connection between the motor shaft and the load shaft; tolerance of misalignment error, reducing system vibration; when stuck or overloaded, no "stuck rotation" phenomenon occurs at the motor end, avoiding motor damage; after the motor starts, the load gradually increases to reduce the motor starting current and achieve soft start; during the shutdown process, it has the characteristic of soft stop; complete leakage-free;

[0031] The protection component 3 includes a first protection sleeve 301 and a second protection sleeve 302. The internal structures of the first protection sleeve 301 and the second protection sleeve 302 are the same with individual differences. A combined disc 303 is fixedly connected to the top of the second protection sleeve 302. A plurality of plug-in blocks 304 are fixedly connected to one side of the second protection sleeve 302. The plug-in blocks 304 cooperate with the plug-in holes 321 to complete the installation of the first protection sleeve 301 and the second protection sleeve 302. The first protection sleeve 301 includes a protection sleeve main body one 311. An inner sleeve plate 312 is fixedly connected inside the protection sleeve main body one 311. A plurality of heating tubes 314 are fixedly connected inside the cavity formed by the inner sleeve plate 312 and the protection sleeve main body one 311. The leaked water is heated and evaporated by the heating tubes 314 arranged inside the cavity. Secondly, the heating by the heating tubes 314 can achieve the work of heat preservation and anti-freezing at the connection, improving the safety of the overall work. A storage battery 315 is fixedly connected to the top of the heating tubes 314. An installation seat 316 is arranged at the bottom of the heating tubes 314. A sliding disc 318 is slidably connected inside the installation seat 316. The sliding disc 318 moves under the buoyancy of water.

[0032] A plurality of water injection holes 317 are provided on the outside of the mounting seat 316, a plurality of blocks 320 are fixedly connected to the bottom of the inner cavity of the mounting seat 316, a conducting wire 319 is fixedly connected to the top of the sliding disk 318, and a conducting plate is fixedly connected to the top of the conducting wire 319, which is connected to the heating tube 314 through the action of the conducting plate, thereby forming a complete circuit to promote the operation of the heating tube 314.

[0033] A fixed disc 313 is fixedly connected to the top of the protective sleeve body 311, a plurality of through holes 323 are provided on the surface of the inner sleeve plate 312, a plurality of plug holes 321 are provided on one side of the fixed disc 313, the diameter of the plug holes 321 matches the diameter of the plug block 304, and a sealing gasket 322 is fixedly connected to the surface of the plug holes 321, the plug holes 321 are used to strengthen the sealing of the installed plug block 304 and the plug holes 321, and the protective component 3 is set to use the protective component 3 to perform warm and antifreeze treatment on the connection between the output end of the magnetic centrifugal pump body 2 and the pipeline, so as to avoid leakage caused by poor sealing and freezing that affects the subsequent use of the pump body and the pipeline.

[0034] Embodiment 2

[0035] This embodiment includes all the structures in the first embodiment. Figure 2 and Figures 8 to 9 The present invention is a composite magnetic drive centrifugal pump, a plurality of moving components 4 are fixedly connected to the bottom of a support base 1, two moving components 4 are connected by a linkage shaft 8, the moving component 4 comprises an outer support shell 401 fixedly connected to the support base 1, an inner cavity of the outer support shell 401 is rotatably connected to a worm 402, one side of the worm 402 is meshingly connected to a worm wheel 403, one side of the worm wheel 403 is fixedly connected to the linkage shaft 8, and the other side of the linkage shaft 8 is fixedly connected to another worm wheel 403, one side of the worm wheel 403 is meshingly connected to a lifting rod 404.

[0036] A moving wheel 405 is provided at the bottom of the lifting rod 404 , a limiting rod 406 is fixedly connected to one side of the lifting rod 404 , a limiting slot 407 is provided on one side of the outer supporting shell 401 , and the limiting rod 406 is slidably connected to the limiting slot 407 .

[0037] The top of the support base 1 is movably connected with a mounting plate 5. A plurality of mounting bolt holes 6 are provided on the surface of the mounting plate 5. The bottom of the magnetic centrifugal pump body 2 is fixed to the mounting plate 5 through bolts using the mounting bolt holes 6. A plurality of shock-absorbing blocks 7 are arranged inside the support base 1. A damper is arranged inside the shock-absorbing block 7. The shock-absorbing block 7 is used to reduce the vibration generated during the operation of the magnetic centrifugal pump body 2 and improve the working stability of the magnetic centrifugal pump body 2. By arranging the shock-absorbing block 7, the vibration generated by the magnetic centrifugal pump body 2 during operation can be reduced. Secondly, with the arrangement of the moving component 4, the overall handling work is facilitated. At the same time, the moving component 4 can be used to support the entire support base 1.

[0038] The working principle of the present invention: When the centrifugal pump is in use, first, the moving component 4 is used to carry out the overall handling work. By rotating the worm 402, the rotation of the worm gear 403 is driven. Thus, under the action of the linkage shaft 8, the operation of the two sets of moving components 4 on the same side is driven. During the rotation of the worm gear 403, it is meshed and connected with the lifting rod 404, thereby driving the lowering of the moving wheel 405. The limiting rod 406 slides inside the limiting groove 407 to support and limit the entire moving wheel 405. When all four moving wheels 405 are operated, the support base 1 can be driven to move by the moving wheels 405;

[0039] When moving to the designated working position, the worm 402 is rotated in the reverse direction to drive the contraction of the moving wheel 405. After the contraction is completed, the outer support housing 401 is used to support the whole;

[0040] Then, the pipeline is connected to the output end of the magnetic centrifugal pump body 2. After the connection is completed, the protection component 3 is installed outside to carry out heat preservation and protection work on the connection part;

[0041] During the water pumping process of the centrifugal pump, when there is a leak at the connection between the pipeline and the output end of the magnetic centrifugal pump body 2, the leaked water will pass through the through hole 323 and enter the cavity between the protective sleeve main body 311 and the inner sleeve plate 312. Along with the continuous operation of the centrifugal pump, the water will accumulate inside the cavity. When the water accumulates to a certain height, the water will enter the inside of the mounting seat 316 through the water injection hole 317 and drive the overall rise of the sliding disk 318 under the buoyancy of the water. When the sliding disk 318 rises, it will drive the overall rise of the conduction wire 319 and the conduction piece fixedly connected to the top of the conduction wire 319, so as to contact the bottom of the heating pipe 314 to form a circuit. At this time, the storage battery 315 will trigger the heating work of the whole heating pipe 314 when the circuit is formed. On the one hand, the heating of the heating pipe 314 is used to carry out heat preservation and anti-freezing work on the connection part. On the other hand, the heating pipe 314 will heat and evaporate the water inside the protection component 3, thereby reducing the internal accumulated water and avoiding damage to the pipeline and the pump body caused by the freezing of the accumulated water.

[0042] The above has described in detail an embodiment of the present invention. However, the above content is only a preferred embodiment of the present invention and should not be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A compound magnetic drive centrifugal pump, comprising a support base (1) and a magnetic centrifugal pump body (2), characterized in that A protective component (3) is provided outside the connection between the output end of the magnetic centrifugal pump body (2) and the pipeline, and the protective component (3) is used to insulate the connection between the pipeline; The protection assembly (3) comprises a first protection sleeve (301) and a second protection sleeve (302); the top of the second protection sleeve (302) is fixedly connected to a combination disc (303); one side of the second protection sleeve (302) is fixedly connected to a plurality of plug-in blocks (304); the first protection sleeve (301) comprises a first protection sleeve body (311); an inner sleeve plate (312) is fixedly connected to the interior of the first protection sleeve body (311); a plurality of heating tubes (314) are fixedly connected to the interior of a cavity formed by the inner sleeve plate (312) and the first protection sleeve body (311); the top of the heating tube (314) is fixedly connected to a storage battery (315); a mounting seat (316) is provided at the bottom of the heating tube (314); a sliding disc (318) is slidably connected to the interior of the mounting seat (316); The outside of the mounting seat (316) is provided with a plurality of water injection holes (317); the bottom of the inner cavity of the mounting seat (316) is fixedly connected to a plurality of stoppers (320); and the top of the sliding plate (318) is fixedly connected to a conducting wire (319); A fixed disc (313) is fixedly connected to the top of the protective sleeve body (311), a plurality of through holes (323) are provided on the surface of the inner sleeve plate (312), a plurality of plug holes (321) are provided on one side of the fixed disc (313), and sealing gaskets (322) are fixedly connected to the surfaces of the plug holes (321); A plurality of moving assemblies (4) are fixedly connected to the bottom of the support base (1), two of the moving assemblies (4) are connected in transmission via a linkage shaft (8), the moving assembly (4) comprising an outer support shell (401) fixedly connected to the support base (1), an inner cavity of the outer support shell (401) being rotatably connected to a worm (402), one side of the worm (402) being meshingly connected to a worm wheel (403), and one side of the worm wheel (403) being meshingly connected to a lifting rod (404); A moving wheel (405) is provided at the bottom of the lifting rod (404), one side of the lifting rod (404) is fixedly connected to a limiting rod (406), one side of the outer support shell (401) is provided with a limiting groove (407), and the limiting rod (406) is slidably connected to the limiting groove (407).

2. The compound magnetic drive centrifugal pump according to claim 1, characterized in that, The top of the support base (1) is movably connected to a mounting plate (5), a surface of the mounting plate (5) is provided with a plurality of mounting bolt holes (6), and a plurality of shock absorbing blocks (7) are arranged inside the support base (1).

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