Magnetic drive vertical multi-stage barrel bag pump

Abstract

The utility model discloses a kind of magnetic transmission vertical multi-stage cylinder bag pumps, comprising: main mounting plate;Outer shell, connect with main mounting plate;First support frame, connect on main mounting plate;Motor, connect on first support frame;Second support frame, connect on main mounting plate;Bearing seat, connect with second support frame;Main shaft, wear on bearing seat;Magnetic force part, connect with motor, second support frame, bearing seat and main shaft;Pump body assembly, the other end of supporting main shaft, pump body assembly has medium access channel and first medium outflow channel, medium access channel is communicated with first space, and first medium outflow channel is worn out main mounting plate;Inner shell, connect between bearing seat and pump body assembly;Multi-stage impeller assembly, connect on main shaft, set between bearing seat and pump body assembly;And pull rod, connect between bearing seat and pump body assembly;So as to overcome the technical problem that leakage easily appears, there is security risk.

Description

Technical Field

[0001] This utility model relates to the field of pump technology, specifically a magnetically driven vertical multistage bag pump. Background Technology

[0002] A pump is a mechanical device used to draw in and discharge media, capable of transferring media from one place to another or lifting them to a higher place;

[0003] There are many types of pumps, and the vertical multistage bag pump is one of them. It is commonly used to transport flammable and volatile media such as liquefied gas, hydrocarbons, alkanes, liquid chlorine, liquid ammonia, and phosgene. Traditional vertical multistage bag pumps are prone to leakage between stages due to their vertical multistage structure, which poses a safety hazard. Utility Model Content

[0004] In view of the above-mentioned shortcomings in the related technologies, the purpose is to provide a magnetic drive vertical multistage bag pump to solve the technical problems of easy leakage and safety hazards in the related technologies;

[0005] The technical solution to achieve the objective is: a magnetically driven vertical multistage bag pump, comprising:

[0006] Main mounting plate;

[0007] The outer casing has one end connected to the bottom of the main mounting plate and has a first space between it and the main mounting plate. The side wall of the outer casing has a medium inlet, which communicates with the first space.

[0008] The first support frame is connected to the top of the main mounting plate;

[0009] An electric motor is connected to the first support frame, and a drive shaft on the electric motor extends into the first support frame;

[0010] The second support frame is connected to the bottom of the main mounting plate and is disposed in the first space;

[0011] A bearing housing, connected to the second support frame, is disposed in the first space, and a second space exists between the bearing housing and the second support frame, the main mounting plate, and the first support frame;

[0012] A main shaft is mounted on the bearing housing, with one end of the main shaft extending into the second space and spaced apart from the drive shaft, and the other end away from the bearing housing;

[0013] A magnetic component is disposed in the second space and connected to the motor, the second support frame, the bearing housing and the main shaft, and is used to rotate the main shaft in conjunction with the transmission shaft when the transmission shaft rotates;

[0014] A pump body assembly is disposed in the first space and supports the other end of the main shaft. The pump body assembly has a medium inlet channel and a first medium outlet channel. The medium inlet channel communicates with the first space, and the first medium outlet channel extends out of the main mounting plate.

[0015] The inner housing is connected between the bearing housing and the pump body assembly;

[0016] A multi-stage impeller assembly is connected to the main shaft and disposed between the bearing housing and the pump body assembly. It has a second medium outflow channel between itself and the inner housing, and the second medium outflow channel leads to the first medium outflow channel.

[0017] And several tie rods are provided on the outside of the inner housing and connected between the bearing seat and the pump body assembly.

[0018] Furthermore: the outer casing includes: an outer cylinder having the first space between it and the main mounting plate, and the medium inlet having a side wall of the outer cylinder;

[0019] A flange is attached to the top of the outer cylinder and connected to the main mounting plate.

[0020] A first sealing element is connected to the flange and disposed between the flange and the main mounting plate;

[0021] A support cylinder, one end of which is connected to the bottom of the outer cylinder;

[0022] A support plate is connected to the other end of the support cylinder;

[0023] And a first port, which is connected to the bottom of the outer cylinder and extends out of the support cylinder.

[0024] Furthermore: the bearing housing includes: a housing body, connected to the second support frame and the magnetic part, surrounding the main shaft and spaced apart from the main shaft;

[0025] At least two adjustable supports are symmetrically connected to the base body for positioning one end of the multi-stage impeller assembly;

[0026] Two first bearing structures are symmetrically connected to the base and the main shaft to support the main shaft;

[0027] And a second seal, connected to the seat body and disposed between the seat body and the inner housing.

[0028] Furthermore: the adjustable support includes: a support column connected to the base; and a positioning pin threaded to the support column for insertion into one end of the multi-stage impeller assembly;

[0029] The first bearing structure includes: a first bearing connected to the main shaft; a bearing connecting sleeve connected to the housing and spaced apart from the first bearing; a second bearing connected to the bearing connecting sleeve and surrounding the first bearing; a backstop ring positioning seat connected to the main shaft; and a backstop ring connected to the backstop ring positioning seat, blocking one end of the first bearing and the second bearing.

[0030] Furthermore: the magnetic component includes an external magnetic rotor, one end of which is connected to the drive shaft;

[0031] The first bushing is fitted onto the main shaft, with one end abutting against the anti-reverse ring positioning seat;

[0032] An inner magnetic rotor is sleeved on the main shaft, contacts the other end of the first bushing, and surrounds the first bushing;

[0033] A locking nut, connected to the main shaft, presses the inner magnetic rotor;

[0034] An isolation sleeve end plate is disposed between the base body and the second support frame;

[0035] An inner isolation sleeve, one end of which is connected to the end plate of the isolation sleeve, separates the inner magnetic rotor and the outer magnetic rotor, and is spaced apart from the inner magnetic rotor;

[0036] An outer isolation sleeve, one end of which is connected to the end plate of the isolation sleeve, is fitted onto the inner isolation sleeve and is spaced apart from the outer magnetic rotor;

[0037] The third sealing element is connected to the isolation sleeve end plate and is disposed between the isolation sleeve end plate and the second support frame;

[0038] And a fourth sealing element, connected to the isolation sleeve end plate, disposed between the isolation sleeve end plate and the seat body.

[0039] Furthermore: the pump body assembly includes: a pump body having the medium inlet channel and the first medium outlet channel;

[0040] A support base is connected to the bottom of the pump body and to one end of the pull rod;

[0041] The second bearing structure is connected to the pump body and the main shaft, and is used to support the other end of the main shaft;

[0042] The fifth seal is connected to the pump body and disposed between the pump body and the inner housing;

[0043] And a medium outlet pipe, one end of which is connected to the pump body and the other end of which extends out of the main mounting plate, the medium outlet pipe having the first medium outlet channel.

[0044] Furthermore: the second bearing structure includes: a second bushing, sleeved on the main shaft, with one end abutting against the multi-stage impeller assembly;

[0045] The third bearing is sleeved on the main shaft and contacts the other end of the second bushing.

[0046] A pressure ring is used to press down the third bearing.

[0047] The first clamping bolt is connected to the main shaft and presses down the pressure ring;

[0048] The fourth bearing is connected to the pump body and surrounds the third bearing;

[0049] And a second clamping bolt, connected to the pump body, to limit the fourth bearing.

[0050] Furthermore: the multi-stage impeller assembly includes: a plurality of impeller structures, continuously arranged on the main shaft, with one end of the first impeller structure inserted into the adjustable support member in the direction from top to bottom;

[0051] An end support is provided between the last impeller structure and the pump body assembly;

[0052] And at least two tension straps are connected between one end of the first impeller structure and the end support to tighten the impeller structure.

[0053] Furthermore, the impeller structure includes: a third bushing fitted on the main shaft; a guide vane housing having a second medium outflow channel between it and the inner housing; a guide vane flow channel connected inside the guide vane housing, with one end surrounding the third bushing; an impeller connected to the main shaft and aligned with the other end of the guide vane flow channel; and a flow guide connected to the guide vane flow channel and spaced apart from the impeller for guiding the medium into the impeller.

[0054] The end support includes: an end support base connected to the guide vane housing and the flow guide and inserted into the pump body assembly; and a bent outer support connected to the end support base for connecting the pull strap.

[0055] Furthermore, it also includes at least one second port extending out of the main mounting plate, with one end disposed in the first space near the bottom of the outer casing, and the other end disposed outside the main mounting plate, spaced apart from the first support frame.

[0056] The above technical solution has the following beneficial effects: A magnetic drive vertical multistage bag pump, compared with related technologies, is provided with a main mounting plate, outer shell, first support frame, motor, second support frame, bearing seat, main shaft, magnetic part, pump body assembly, inner shell, multistage impeller assembly and tie rod;

[0057] The main mounting plate, the first support frame, and the second support frame form a reliable support structure, which is conducive to connecting other components and makes assembly relatively convenient.

[0058] The motor generates rotational driving force, which, through the magnetic part, drives the main shaft to rotate, thereby driving the partial rotation of the multi-stage impeller assembly. This allows the medium in the first space to enter through the medium inlet channel, flow along the multi-stage impeller assembly into the second medium outlet channel, and then flow out through the first medium outlet channel, thus realizing the transport of the medium.

[0059] The use of a magnetic component not only enables the motor to rotate in conjunction with the main shaft, but also creates a barrier to prevent media leakage, making it relatively safe.

[0060] Because it is equipped with an outer shell and an inner shell, it can block and contain the medium. Moreover, after the multi-stage impeller assembly is assembled, it is locked and positioned between the inner shell, bearing housing and pump body assembly by tie rods, which reduces the chance of leakage and makes it relatively safe.

[0061] This overcomes the technical problems of easy leakage and potential safety hazards, achieving a relatively safe technical effect by reducing the probability of leakage, and is practical. Attached Figure Description

[0062] Figure 1 This is a sectional view of the final assembly.

[0063] Figure 2 For the reason Figure 1 A partial sectional view of the upper half after being divided by line A;

[0064] Figure 3 For the reason Figure 1 A partial sectional view of the lower half after being divided by line A;

[0065] Figure 4 for Figure 2 A magnified view of part B in the diagram;

[0066] Figure 5 for Figure 4 A magnified view of part E in the diagram;

[0067] Figure 6 for Figure 3 A magnified view of part C in the diagram;

[0068] Figure 7for Figure 3 A magnified view of part D in the diagram;

[0069] In the diagram: 10. Main mounting plate, 20. Outer shell, 21. First space, 22. Medium inlet, 20-1. Outer cylinder, 20-2. Flange, 20-3. First seal, 20-4. Support cylinder, 20-5. Support plate, 20-6. First port, 30. First support frame, 40. Motor, 41. Drive shaft, 50. Second support frame, 60. Bearing housing, 61. Second space, 60-1. Seat, 60-2. Adjustable support, 60-21. Support column, 60- 22. Locating pin; 60-3. First bearing structure; 60-31. First bearing; 60-32. Bearing connecting sleeve; 60-33. Second bearing; 60-34. Anti-reverse ring positioning seat; 60-35. Anti-reverse ring; 60-4. Second seal; 70. Main shaft; 80. Magnetic part; 80-1. Outer magnetic rotor; 80-2. First shaft sleeve; 80-3. Inner magnetic rotor; 80-4. Locking nut; 80-5. Isolation sleeve end plate; 80-6. Inner isolation sleeve; 80-7. Outer isolation sleeve. 80-8. Third seal, 80-9. Fourth seal, 90. Pump body assembly, 91. Medium inlet channel, 92. First medium outlet channel, 90-1. Pump body, 90-2. Support seat, 90-3. Second bearing structure, 90-31. Second bushing, 90-32. Third bearing, 90-33. Pressure ring, 90-34. First clamping bolt, 90-35. Fourth bearing, 90-36. Second clamping bolt, 90-4. Fifth seal, 90-5. Medium 100. Inner shell, 110. Multi-stage impeller assembly, 111. Second medium outlet channel, 110-1. Impeller structure, 110-11. Third bushing, 110-12. Guide vane shell, 110-13. Guide vane flow channel, 110-14. Impeller, 110-15. Guide component, 110-2. End support, 110-21. End support seat, 110-22. Bending external support, 110-3. Pull belt, 120. Pull rod, 130. Second outlet. Detailed Implementation

[0070] To make the content easier to understand, the following detailed description is provided with reference to specific embodiments and accompanying drawings;

[0071] A magnetically driven vertical multistage bag pump solves the technical problems of easy leakage and safety hazards in related technologies. It can be manufactured and used, achieving the positive effect of reducing the probability of leakage and ensuring relative safety. The overall concept is as follows:

[0072] Implementation

[0073] like Figure 1 ,Figure 2 , Figure 3 As shown; a magnetically driven vertical multistage bag pump, comprising:

[0074] Main mounting plate 10;

[0075] The outer casing 20 is connected at one end to the bottom of the main mounting plate 10 and has a first space 21 between it and the main mounting plate 10. The outer casing 20 has a medium inlet 22 on its side wall, and the medium inlet 22 communicates with the first space 21.

[0076] The first support frame 30 is connected to the top of the main mounting plate 10;

[0077] A motor 40 is connected to the first support frame 30, and a drive shaft 41 on the motor 40 extends into the first support frame 30;

[0078] The second support frame 50 is connected to the bottom of the main mounting plate 10 and is disposed in the first space 21;

[0079] The bearing housing 60 is connected to the second support frame 50 and is disposed in the first space 21, and there is a second space 61 between the bearing housing 60 and the second support frame 50, the main mounting plate 10 and the first support frame 30;

[0080] A main shaft 70 is threaded onto the bearing housing 60. One end of the main shaft 70 extends into the second space 61 and is spaced apart from the drive shaft 41, while the other end is away from the bearing housing 60.

[0081] A magnetic part 80 is disposed in the second space 61 and is connected to the motor 40, the second support frame 50, the bearing seat 60 and the main shaft 70, and is used to rotate the main shaft 70 in conjunction with the transmission shaft 41 when the transmission shaft 41 rotates;

[0082] A pump body assembly 90 is disposed in the first space 21 and supports the other end of the main shaft 70. The pump body assembly 90 has a medium inlet channel 91 and a first medium outlet channel 92. The medium inlet channel 91 communicates with the first space 21, and the first medium outlet channel 92 extends out of the main mounting plate 10.

[0083] The inner housing 100 is connected between the bearing seat 60 and the pump body assembly 90;

[0084] A multi-stage impeller assembly 110 is connected to the main shaft 70 and is disposed between the bearing housing 60 and the pump body assembly 90. It has a second medium outflow channel 111 between itself and the inner housing 100. The second medium outflow channel 111 leads to the first medium outflow channel 92.

[0085] And several tie rods 120 are provided on the outside of the inner housing 100 and connected between the bearing seat 60 and the pump body assembly 90;

[0086] Specifically, during implementation, the system includes a main mounting plate 10, an outer casing 20, a first support frame 30, a motor 40, a second support frame 50, a bearing seat 60, a main shaft 70, a magnetic part 80, a pump body assembly 90, an inner casing 100, a multi-stage impeller assembly 110, and a tie rod 120.

[0087] The main mounting plate 10, the first support frame 30, and the second support frame 50 form a reliable support structure, which is conducive to connecting other components and makes assembly relatively convenient.

[0088] The motor 40 generates rotational driving force, which, through the magnetic unit 80, drives the main shaft 70 to rotate, thereby causing partial rotation of the multi-stage impeller assembly 110. This allows the medium in the first space 21 to enter through the medium inlet channel 91, flow along the multi-stage impeller assembly 110 into the second medium outlet channel 111, and then out through the first medium outlet channel 92, thus realizing the transport of the medium (medium flow direction, such as...). Figure 1 (as indicated by the arrow in the image).

[0089] The magnetic part 80 is used, which not only enables the motor 40 to rotate in conjunction with the spindle 70, but also forms a barrier to prevent media leakage, making it relatively safe.

[0090] Because of the outer shell 20 and the inner shell 100, the medium can be blocked and contained. Moreover, after the multi-stage impeller assembly 110 is assembled, it is locked and positioned between the inner shell 100, the bearing seat 60 and the pump body assembly 90 by the tie rod 120, which reduces the probability of leakage, makes it relatively safe and improves the efficiency of conveying.

[0091] Another implementation method:

[0092] like Figure 1 , Figure 2 , Figure 4 As shown; in practice, the main mounting plate 10 is a circular plate structure;

[0093] The first support frame 30 has an approximate "I" shape and is connected to the main mounting plate 10 by bolts, which facilitates the connection of the motor 40 and makes assembly relatively convenient.

[0094] The motor 40 is a common structure in the prior art, such as a vertical motor, which is connected to the first support frame 30 by bolts to generate rotational driving force;

[0095] The second support frame 50 has an approximate "I" shape and is connected to the main mounting plate 10 by bolts, which facilitates the connection between the bearing seat 60 and the magnetic part 80 and makes assembly relatively convenient.

[0096] A sixth sealing element is also provided between the second support frame 50 and the main mounting plate 10. The sixth sealing element is an O-ring to prevent the medium in the first space 21 from leaking out, which is relatively safe.

[0097] Another implementation method:

[0098] like Figure 1 , Figure 2 , Figure 3 As shown; in implementation, the outer casing 20 includes: an outer cylinder 20-1, having the first space 21 between it and the main mounting plate 10, and the medium inlet 22 on the side wall of the outer cylinder 20-1; a flange 20-2, connected to the top of the outer cylinder 20-1 and connected to the main mounting plate 10; a first sealing element 20-3, connected to the flange 20-2 and disposed between the flange 20-2 and the main mounting plate 10; a support cylinder 20-4, one end of which is connected to the bottom of the outer cylinder 20-1; a support plate 20-5, connected to the other end of the support cylinder 20-4; and a first pipe opening 20-6, connected to the bottom of the outer cylinder 20-1 and extending out of the support cylinder 20-4;

[0099] The outer cylinder 20-1 is roughly cylindrical with an arc-shaped bottom, forming a first space 21, which is conducive to containing the medium;

[0100] A medium inlet 22 is provided for connection to the medium flow pipeline, which facilitates the entry of the medium into the first space 21;

[0101] The flange 20-2 is welded to the outer cylinder 20-1 and is used to connect to the main mounting plate 10 via bolts, making assembly relatively convenient.

[0102] The first sealing element 20-3 is an O-ring to prevent leakage of the medium in the first space 21, which is relatively safe.

[0103] The support cylinder 20-4 is a cylindrical body and is welded to the outer cylinder 20-1;

[0104] The support plate 20-5 is a plate-shaped structure that is welded to the support cylinder 20-4, which facilitates connection with the anchor bolts reserved on the foundation and makes it relatively easy to install the magnetic drive vertical multistage bag pump.

[0105] The first pipe opening 20-6 is composed of a straight pipe, a bend, and a flange. One end is welded to the outer cylinder 20-1. When cleaning the outer cylinder 20-1, the first pipe opening 20-6 is opened to facilitate the discharge of liquid in the first space 21. When not cleaning, the first pipe opening 20-6 is closed, which is relatively convenient to use.

[0106] Another implementation method:

[0107] like Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown; in implementation, the bearing housing 60 includes: a housing 60-1, connected to the second support frame 50 and the magnetic part 80, surrounding the main shaft 70 and spaced apart from the main shaft 70; at least two adjustable support members 60-2, symmetrically connected to the housing 60-1, for positioning one end of the multi-stage impeller assembly 110; two first bearing structures 60-3, symmetrically connected to the housing 60-1 and the main shaft 70, supporting the main shaft 70; and a second sealing member 60-4, connected to the housing 60-1 and disposed between the housing 60-1 and the inner housing 100;

[0108] The base 60-1 is connected to the second support frame 50 and the magnetic part 80 by bolts, making assembly relatively convenient.

[0109] The adjustable support 60-2 includes: a support column 60-21 connected to the base 60-1; and a positioning pin 60-22 threadedly connected to the support column 60-21 for insertion into one end of the multi-stage impeller assembly 110; the support column 60-21 is welded to the base 60-1; the positioning pin 60-22 is threadedly connected to the support column 60-21, which facilitates adjustment of the position of the positioning pin 60-22, allowing it to be inserted into the circular groove on the guide vane housing 110-12 to position the multi-stage impeller assembly 110. The positioning pin 60-22 also acts as a barrier, providing relatively good assembly flexibility.

[0110] The first bearing structure 60-3 includes: a first bearing 60-31 connected to the main shaft 70; a bearing connecting sleeve 60-32 connected to the seat 60-1 and spaced apart from the first bearing 60-31; a second bearing 60-33 connected to the bearing connecting sleeve 60-32 and surrounding the first bearing 60-31; a retaining ring positioning seat 60-34 connected to the main shaft 70; and a retaining ring 60-35 connected to the retaining ring positioning seat 60-34, blocking one end of the first bearing 60-31 and the second bearing 60-33.

[0111] The first bearing 60-31 is a sliding bearing;

[0112] The bearing connecting sleeve 60-32 is connected to the housing 60-1 by bolts, which facilitates the connection of the second bearing 60-33.

[0113] The second bearing 60-33 is a sliding bearing used to contact the first bearing 60-31, so that the main shaft 70 is positioned, preventing the main shaft 70 from wobbling when rotating, and the coaxiality during rotation is relatively good, which improves the stability of operation.

[0114] The anti-reverse ring positioning seat 60-34 is connected to the main shaft 70, and a key is provided between the anti-reverse ring positioning seat 60-34 and the main shaft 70 so that the anti-reverse ring positioning seat 60-34 can rotate synchronously with the main shaft 70;

[0115] The anti-reverse ring 60-35 is secured on the anti-reverse ring positioning seat 60-34. The material is YWN8, which forms a barrier to prevent the second bearing 60-33 from disengaging from the bearing connecting sleeve 60-32. The structure has relatively good reliability.

[0116] Among them, the second sealing element 60-4 is an O-ring, which prevents media leakage and is relatively safe;

[0117] Another implementation method:

[0118] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown; during implementation, the main shaft 70 is a stepped shaft made of 17-4PH stainless steel, machined from a section of round steel, and has relatively high structural strength;

[0119] Another implementation method:

[0120] like Figure 1 , Figure 2 , Figure 4As shown; in implementation, the magnetic part 80 includes: an outer magnetic rotor 80-1, one end of which is connected to the drive shaft 41; a first bushing 80-2, which is sleeved on the main shaft 70, one end of which abuts against the anti-reverse ring positioning seat 60-34; an inner magnetic rotor 80-3, which is sleeved on the main shaft 70, contacts the other end of the first bushing 80-2, and surrounds the first bushing 80-2; a locking nut 80-4, which is connected to the main shaft 70 and presses the inner magnetic rotor 80-3; an isolation sleeve end plate 80-5, which is disposed between the seat 60-1 and the second support frame 50; and an inner isolation sleeve 80-6, one end of which is connected to the isolation sleeve An end plate 80-5 is connected, separating the inner magnetic rotor 80-3 and the outer magnetic rotor 80-1, and is spaced apart from the inner magnetic rotor 80-3; an outer isolation sleeve 80-7, one end of which is connected to the isolation sleeve end plate 80-5, is fitted onto the inner isolation sleeve 80-6, and is spaced apart from the outer magnetic rotor 80-1; a third sealing member 80-8 is connected to the isolation sleeve end plate 80-5 and is disposed between the isolation sleeve end plate 80-5 and the second support frame 50; and a fourth sealing member 80-9 is connected to the isolation sleeve end plate 80-5 and is disposed between the isolation sleeve end plate 80-5 and the seat 60-1;

[0121] The outer magnetic rotor 80-1 includes: a first body made of Q235A, roughly in the shape of a "T", one end of which is connected to the drive shaft 41, and the other end of which surrounds the outer isolation sleeve 80-7 and is spaced apart from the outer isolation sleeve 80-7; an outer magnet made of neodymium iron boron, connected to the inner wall of the first body and facing the inner magnetic rotor 80-3; and at least one tightening bolt, which is an internal hexagonal bolt, threadedly connected to the first body and tightening the drive shaft 41.

[0122] Among them, the first bushing 80-2 is fitted onto the main shaft 70;

[0123] The inner magnetic rotor 80-3 includes: a second main body made of 304 stainless steel, roughly cylindrical in shape, with a stepped through hole in the middle, which fits onto the main shaft 70, and a key is provided between the inner magnetic rotor 80-3 and the main shaft 70 (the key facilitates synchronous rotation between the inner magnetic rotor 80-3 and the main shaft 70), and abuts against the first bushing 80-2; and an inner magnet made of neodymium iron boron, connected to the outer wall of the second main body, facing the outer magnet.

[0124] Among them, the locking nut 80-4 is a commonly used structure in the prior art. It is threaded to the main shaft 70 and is used to press the inner magnetic rotor 80-3. It is relatively easy to assemble.

[0125] Among them, the isolation sleeve end plate 80-5 is connected to the base 60-1 and the second support frame 50 by bolts, which makes assembly relatively convenient;

[0126] The inner isolation sleeve 80-6 has a roughly "U" shaped structure and is welded to the isolation sleeve end plate 80-5.

[0127] The outer isolation sleeve 80-7 has a roughly "U" shaped structure, which is fitted onto the inner isolation sleeve 80-6 and welded to the isolation sleeve end plate 80-5. This improves the structural strength and together with the inner isolation sleeve 80-6 forms a barrier to prevent media leakage. This is relatively safe and will not affect the rotation of the outer magnetic rotor 80-1 in conjunction with the inner magnetic rotor 80-3.

[0128] Among them, the third sealing element 80-8 is an O-ring, which prevents media leakage and is relatively safe;

[0129] Among them, the fourth sealing element 80-9 is an O-ring, which prevents media leakage and is relatively safe;

[0130] When the outer magnetic rotor 80-1 is rotated in conjunction with the drive shaft 41, the outer magnetic rotor 80-1 rotates in conjunction with the inner magnetic rotor 80-3, utilizing the principle of magnetic coupling to transmit power, which is common knowledge.

[0131] Another implementation method:

[0132] like Figure 1 , Figure 3 , Figure 7 As shown; in implementation, the pump body assembly 90 includes: a pump body 90-1 having the medium inlet channel 91 and the first medium outlet channel 92; a support base 90-2 connected to the bottom of the pump body 90-1 and connected to one end of the pull rod 120; a second bearing structure 90-3 connected to the pump body 90-1 and the main shaft 70 for supporting the other end of the main shaft 70; a fifth seal 90-4 connected to the pump body 90-1 and disposed between the pump body 90-1 and the inner housing 100; and a medium outlet port 90-5, one end of which is connected to the pump body 90-1 and the other end of which extends out of the main mounting plate 10, the medium outlet port 90-5 having the first medium outlet channel 92;

[0133] The pump body 90-1 has a medium inlet channel 91 and a first medium outlet channel 92, which is conducive to medium flow. The pump body 90-1 can position the inner shell 100 and the multi-stage impeller assembly 110, and has relatively good structural reliability and is relatively easy to assemble.

[0134] Among them, the support base 90-2 is a plate-shaped structure, which is connected to the pump body 90-1 by bolts and is used to connect the tie rod 120.

[0135] The second bearing structure 90-3 includes: a second bushing 90-31, sleeved on the main shaft 70, with one end abutting against the multi-stage impeller assembly 110; a third bearing 90-32, sleeved on the main shaft 70, contacting the other end of the second bushing 90-31; a pressure ring 90-33, pressing the third bearing 90-32; a first clamping bolt 90-34, connected to the main shaft 70, pressing the pressure ring 90-33; a fourth bearing 90-35, connected to the pump body 90-1, surrounding the third bearing 90-32; and a second clamping bolt 90-36, connected to the pump body 90-1, limiting the fourth bearing 90-35.

[0136] The second bushing 90-31 is fitted onto the main shaft 70, which is beneficial for positioning the multi-stage impeller assembly 110 and the third bearing 90-32;

[0137] The third bearing, 90-32, is a sliding bearing;

[0138] The pressure ring 90-33 is used to press down the third bearing 90-32;

[0139] The first clamping bolt 90-34 is an internal hex bolt, which is threaded to the main shaft 70 and is used to clamp the pressure ring 90-33.

[0140] The fourth bearing 90-35 is a sliding bearing, used to contact the third bearing 90-32 to position the main shaft 70, prevent the main shaft 70 from wobbling when rotating, and ensure relatively good coaxiality during rotation, thereby improving the stability of operation.

[0141] The second clamping bolt 90-36 is an internal hex bolt, which is threaded to the pump body 90-1 and is used to limit the fourth bearing 90-35 to prevent the fourth bearing 90-35 from disengaging from the pump body 90-1.

[0142] Among them, the fifth sealing element 90-4 is an O-ring, which prevents media leakage and is relatively safe;

[0143] The medium outlet 90-5 is composed of a straight pipe, a bend, and a flange. One end is connected to the pump body 90-1 by bolts, and the other end extends out of the main mounting plate 10. The medium is transported along the first medium outlet channel 92.

[0144] Another implementation method:

[0145] like Figure 1 , Figure 2 , Figure 3 , Figure 6 As shown; during implementation, the inner shell 100 has a cylindrical structure, which can block and contain the medium, reducing the chance of leakage and making it relatively safe;

[0146] Another implementation method:

[0147] like Figure 1 , Figure 2 , Figure 3 , Figure 6 As shown; in implementation, the multi-stage impeller assembly 110 includes: a plurality of impeller structures 110-1, continuously arranged on the main shaft 70, from top to bottom, one end of the first impeller structure 110-1 is inserted into the adjustable support 60-2; an end support 110-2 is disposed between the last impeller structure 110-1 and the pump body assembly 90; and at least two pull belts 110-3 are connected between one end of the first impeller structure 110-1 and the end support 110-2 to tighten the impeller structure 110-1;

[0148] The impeller structure 110-1 includes: a third bushing 110-11, sleeved on the main shaft 70; a guide vane housing 110-12, having a second medium outflow channel 111 between itself and the inner housing 100; a guide vane flow channel 110-13, connected inside the guide vane housing 110-12, with one end surrounding the third bushing 110-11; an impeller 110-14, connected to the main shaft 70 and aligned with the other end of the guide vane flow channel 110-13; and a flow guide 110-15, connected to the guide vane flow channel 110-13 and spaced apart from the impeller 110-14, for guiding the medium into the impeller 110-14.

[0149] The number of impeller structures 110-1 is seven;

[0150] The third bushing 110-11 is fitted onto the main shaft 70 and rotates together with the main shaft 70;

[0151] The guide vane shells 110-12 are roughly cylindrical in shape. The guide vane shells 110-12 are interlocked and assembled, which is relatively convenient and forms a barrier.

[0152] The guide vane channel 110-13 is an arc-shaped channel with several arc-shaped blades inside, such as four arc-shaped blades. The arc-shaped blades divide the arc-shaped channel into four arc-shaped spaces, which is beneficial for guiding the medium. When the medium flows along the arc-shaped spaces, the stability is relatively good and vibration is reduced.

[0153] The guide vane channel 110-13 and the third bushing 110-11 are spaced apart, so as not to affect the rotation of the third bushing 110-11 with the main shaft 70.

[0154] Using guide vane channels 110-13 to guide the medium is common knowledge. Anyone skilled in the art can directly and without doubt know how to set up guide vane channels 110-13 after seeing the disclosed content, without needing to put in creative effort or conduct excessive experiments.

[0155] Impeller 110-14 is a closed impeller connected to the main shaft 70. A key is set between the impeller and the main shaft 70. When the main shaft 70 rotates, the impeller 110-14 rotates synchronously. The medium enters the impeller 110-14 and flows along the guide vane channel 110-13.

[0156] The guide element 110-15 is connected to the guide vane channel 110-13, for example by welding, to form a guide, which is conducive to the smooth entry of the medium into the impeller 110-14 and the stability of the medium flow is relatively good.

[0157] The end support 110-2 includes: an end support base 110-21, which is connected to the guide vane housing 110-12 and the flow guide 110-15 and is inserted into the pump body assembly 90; and a bent outer support 110-22, which is connected to the end support base 110-21 and is used to connect the pull strap 110-3.

[0158] The end support base 110-21 is provided, which is connected to the guide vane housing 110-12 and the flow guide 110-15, which facilitates insertion with the pump body assembly 90 and makes assembly relatively convenient.

[0159] Welding the outer bending support 110-22 to the end support base 110-21 facilitates the connection of the pull strap 110-3.

[0160] There are two pull straps 110-3, made of 304 stainless steel. One end is connected to the first guide vane housing 110-12 (the first one from top to bottom) by bolts, and the other end is hooked to the bent outer support 110-22. This helps to tighten the impeller structure 110-1 and the end support 110-2, making the impeller structure 110-1 and the end support 110-2 tightly connected, reducing the chance of leakage and making it relatively safe.

[0161] Another implementation method:

[0162] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown; in implementation, there are four tie rods 120, one end of which is threaded onto the support seat 90-2 and the other end is threaded to the seat body 60-1. One end of the tie rod 120 has a hexagonal nut. After the hexagonal nut is tightened, the tie rod 120 pulls the bearing seat 60 and the pump body assembly 90, so that the inner shell 100 and the multi-stage impeller assembly 110 are reliably positioned, and the operation stability is relatively good.

[0163] Another implementation method:

[0164] like Figure 1 , Figure 2 , Figure 3 As shown; in practice, it also includes: at least one second port 130, which extends out of the main mounting plate 10, with one end set in the first space 21 near the bottom of the outer shell 20, and the other end set outside the main mounting plate 10, spaced apart from the first support frame 30.

[0165] The second pipe opening 130 is composed of a straight pipe, a bend, and a flange, and is welded to the main mounting plate 10. This facilitates the emptying of the medium in the first space 21 and makes cleaning the first space 21 relatively convenient. When it is not necessary to clean the first space 21, the second pipe opening 130 is closed.

[0166] In the description, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings, and are only for the convenience or simplification of the description, rather than indicating a specific orientation that must be present; the operation process described in the embodiments is not an absolute usage step, and corresponding adjustments can be made in actual use;

[0167] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art; the words “first,” “second,” and similar terms used in the specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components, and similarly, the words “a” or “a” and similar terms do not determine a quantity limitation, but rather indicate the presence of at least one, as determined by the content of the embodiments;

[0168] The above description is only a preferred embodiment, but the scope of protection is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the disclosed technology, based on the technical solution and inventive concept, should be included within the scope of protection.

Claims

1. A magnetically driven vertical multistage bag pump, characterized in that, include: Main mounting plate; The outer casing has one end connected to the bottom of the main mounting plate and has a first space between it and the main mounting plate. The side wall of the outer casing has a medium inlet, which communicates with the first space. The first support frame is connected to the top of the main mounting plate; An electric motor is connected to the first support frame, and a drive shaft on the electric motor extends into the first support frame; The second support frame is connected to the bottom of the main mounting plate and is disposed in the first space; A bearing housing, connected to the second support frame, is disposed in the first space, and a second space exists between the bearing housing and the second support frame, the main mounting plate, and the first support frame; A main shaft is mounted on the bearing housing, with one end of the main shaft extending into the second space and spaced apart from the drive shaft, and the other end away from the bearing housing; A magnetic component is disposed in the second space and connected to the motor, the second support frame, the bearing housing and the main shaft, and is used to rotate the main shaft in conjunction with the transmission shaft when the transmission shaft rotates; A pump body assembly is disposed in the first space and supports the other end of the main shaft. The pump body assembly has a medium inlet channel and a first medium outlet channel. The medium inlet channel communicates with the first space, and the first medium outlet channel extends out of the main mounting plate. The inner housing is connected between the bearing housing and the pump body assembly; A multi-stage impeller assembly is connected to the main shaft and disposed between the bearing housing and the pump body assembly. It has a second medium outflow channel between itself and the inner housing, and the second medium outflow channel leads to the first medium outflow channel. And several tie rods are provided on the outside of the inner housing and connected between the bearing seat and the pump body assembly.

2. The magnetically driven vertical multistage bag pump according to claim 1, characterized in that: The outer casing includes: an outer cylinder having the first space between it and the main mounting plate, and the medium inlet being located on the side wall of the outer cylinder; A flange is attached to the top of the outer cylinder and connected to the main mounting plate. A first sealing element is connected to the flange and disposed between the flange and the main mounting plate; A support cylinder, one end of which is connected to the bottom of the outer cylinder; A support plate is connected to the other end of the support cylinder; And a first port, which is connected to the bottom of the outer cylinder and extends out of the support cylinder.

3. The magnetically driven vertical multistage bag pump according to claim 1, characterized in that: The bearing housing includes: a housing body, connected to the second support frame and the magnetic part, surrounding the main shaft and spaced apart from the main shaft; At least two adjustable supports are symmetrically connected to the base body for positioning one end of the multi-stage impeller assembly; Two first bearing structures are symmetrically connected to the base and the main shaft to support the main shaft; And a second seal, connected to the seat body and disposed between the seat body and the inner housing.

4. A magnetically driven vertical multistage bag pump according to claim 3, characterized in that: The adjustable support includes: a support column connected to the base; and a positioning pin threaded to the support column for insertion into one end of the multi-stage impeller assembly. The first bearing structure includes: a first bearing connected to the main shaft; a bearing connecting sleeve connected to the housing and spaced apart from the first bearing; a second bearing connected to the bearing connecting sleeve and surrounding the first bearing; a backstop ring positioning seat connected to the main shaft; and a backstop ring connected to the backstop ring positioning seat, blocking one end of the first bearing and the second bearing.

5. A magnetically driven vertical multistage bag pump according to claim 4, characterized in that: The magnetic component includes: an external magnetic rotor, one end of which is connected to the drive shaft; The first bushing is fitted onto the main shaft, with one end abutting against the anti-reverse ring positioning seat; An inner magnetic rotor is sleeved on the main shaft, contacts the other end of the first bushing, and surrounds the first bushing; A locking nut, connected to the main shaft, presses the inner magnetic rotor; An isolation sleeve end plate is disposed between the base body and the second support frame; An inner isolation sleeve, one end of which is connected to the end plate of the isolation sleeve, separates the inner magnetic rotor and the outer magnetic rotor, and is spaced apart from the inner magnetic rotor; An outer isolation sleeve, one end of which is connected to the end plate of the isolation sleeve, is fitted onto the inner isolation sleeve and is spaced apart from the outer magnetic rotor; The third sealing element is connected to the isolation sleeve end plate and is disposed between the isolation sleeve end plate and the second support frame; And a fourth sealing element, connected to the isolation sleeve end plate, disposed between the isolation sleeve end plate and the seat body.

6. A magnetically driven vertical multistage bag pump according to claim 1, characterized in that: The pump assembly includes: a pump body having the medium inlet channel and the first medium outlet channel; A support base is connected to the bottom of the pump body and to one end of the pull rod; The second bearing structure is connected to the pump body and the main shaft, and is used to support the other end of the main shaft; The fifth seal is connected to the pump body and disposed between the pump body and the inner housing; And a medium outlet pipe, one end of which is connected to the pump body and the other end of which extends out of the main mounting plate, the medium outlet pipe having the first medium outlet channel.

7. A magnetically driven vertical multistage bag pump according to claim 6, characterized in that: The second bearing structure includes: a second bushing, which is fitted onto the main shaft, with one end abutting against the multi-stage impeller assembly; The third bearing is sleeved on the main shaft and contacts the other end of the second bushing. A pressure ring is used to press down the third bearing. The first clamping bolt is connected to the main shaft and presses down the pressure ring; The fourth bearing is connected to the pump body and surrounds the third bearing; And a second clamping bolt, connected to the pump body, to limit the fourth bearing.

8. A magnetically driven vertical multistage bag pump according to claim 4, characterized in that: The multi-stage impeller assembly includes: a plurality of impeller structures, which are continuously arranged on the main shaft, with one end of the first impeller structure being inserted into the adjustable support member from top to bottom. An end support is provided between the last impeller structure and the pump body assembly; And at least two tension straps are connected between one end of the first impeller structure and the end support to tighten the impeller structure.

9. A magnetically driven vertical multistage bag pump according to claim 8, characterized in that: The impeller structure includes: a third bushing fitted on the main shaft; a guide vane housing having a second medium outflow channel between it and the inner housing; a guide vane flow channel connected inside the guide vane housing, with one end surrounding the third bushing; an impeller connected to the main shaft and aligned with the other end of the guide vane flow channel; and a flow guide connected to the guide vane flow channel and spaced apart from the impeller for guiding the medium into the impeller. The end support includes: an end support base connected to the guide vane housing and the flow guide and inserted into the pump body assembly; and a bent outer support connected to the end support base for connecting the pull strap.

10. A magnetically driven vertical multistage bag pump according to claim 1, characterized in that: Also includes: At least one second port extends out of the main mounting plate, with one end located in the first space near the bottom of the outer casing, and the other end located outside the main mounting plate, spaced apart from the first support frame.

Images