CN217873292U

CN217873292U - Vertical multistage magnetic drive pump with double-deck protection

Info

Publication number: CN217873292U
Application number: CN202221464866.4U
Authority: CN
Inventors: 刘文星; 张德波; 张希策; 钱鸿宇
Original assignee: Dalian Jinshi Pump Co ltd
Current assignee: Dalian Jinshi Pump Co ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-11-22
Anticipated expiration: 2032-06-13

Abstract

The utility model discloses a vertical multistage magnetic drive pump with double-deck protection, including the pump shaft, on the left side external diameter of pump shaft from a left side right side first impeller of fixedly connected with, second impeller, third impeller and fourth impeller in proper order, be provided with first sliding bearing subassembly on the external diameter on the fourth impeller right side of being located of pump shaft, the pump shaft is located and is provided with the bearing body on the external diameter on first sliding bearing subassembly right side, the right side of bearing body links to each other with first separation sleeve subassembly through first interior hexagon head screw. The utility model discloses in, fix a bag body on a section of thick bamboo bag blind flange through third stud and nut, set up first sealed pad between a bag body and a section of thick bamboo bag blind flange, reach sealed effect under the effect of third stud and nut pretension power, a bag body and a section of thick bamboo bag blind flange form a sealed chamber, with whole pump, all seal in the third chamber except that the motor, reduced the leakage point of pump.

Description

Vertical multistage magnetic drive pump with double-deck protection

Technical Field

The utility model relates to a magnetic drive pump technical field especially relates to a vertical multistage magnetic drive pump with double-deck protection.

Background

The magnetic drive pump is characterized in that an outer magnetic rotor assembly and an inner magnetic drive assembly of the magnetic coupler are isolated by an isolation sleeve assembly for the magnetic pump, the motor drives the outer magnetic rotor assembly to rotate through a coupler, a magnetic field penetrates through an air gap and the isolation sleeve, and the inner magnetic rotor assembly and an impeller fixed on the pump shaft together with the inner magnetic rotor assembly are driven to rotate through the magnetic force. The non-contact transmission of power is realized, the dynamic seal of a common centrifugal pump is converted into a static seal, and no leakage is realized.

The magnetic pump is widely applied to various industries such as petroleum, chemical industry, textile and the like by virtue of the completely non-leakage, safe and reliable performance, but when the magnetic pump is used for conveying extremely dangerous media such as high pressure, high lift, extremely flammable, extremely explosive, extremely toxic and the like, the magnetic pump has high requirements on the pressure bearing performance and the sealing performance, so the improvement on the magnetic pump is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a vertical multistage magnetic pump with double-layer protection.

In order to realize the purpose, the utility model adopts the following technical scheme: a first impeller, a second impeller, a third impeller and a fourth impeller are fixedly connected to the outer diameter of the left side of the pump shaft from left to right in sequence, a first sliding bearing assembly is arranged on the outer diameter of the right side of the fourth impeller of the pump shaft, a bearing body is arranged on the outer diameter of the right side of the first sliding bearing assembly of the pump shaft, the right side of the bearing body is connected with the first isolation sleeve assembly through a first inner hexagon head screw, a third sealing gasket is arranged between the bearing body and the first inner hexagon head screw, a second isolation sleeve assembly is arranged outside the first isolation sleeve assembly, the second isolation sleeve assembly is connected with the bearing body through a second stud, a second sliding bearing assembly is arranged on the right side of the bearing body of the pump shaft, an inner magnetic bearing assembly is arranged on the right side of the second sliding bearing assembly, an outer magnetic driving assembly is arranged outside the inner magnetic driving assembly, a connecting frame is arranged outside the outer magnetic driving assembly, the right side of the connecting frame is connected with a bearing box and a barrel bag flange cover through the first stud, an upper side and a lower side of the barrel bag cover are respectively connected with a cavity of a first chamber, and a second double stud chamber is arranged between the left side of the inner magnetic driving assembly and a left side of the barrel bag flange cover.

As a further description of the above technical solution:

and a second sealing gasket is arranged between the bearing body and the second isolation sleeve component.

As a further description of the above technical solution:

the left side of the first impeller is provided with a sixth sealing gasket, a seventh sealing gasket is arranged between the first impeller and the second impeller, a fifth sealing gasket is arranged between the second impeller and the third impeller, and a fourth sealing gasket is arranged between the third impeller and the fourth impeller.

As a further description of the above technical solution:

a first sealing gasket is arranged between the right side of the cylinder bag body and the cylinder bag flange cover.

As a further description of the above technical solution:

and a third sealing gasket is arranged outside the first cavity.

As a further description of the above technical solution:

and a third chamber is arranged between the barrel bag body and the barrel bag flange cover.

As a further description of the above technical solution:

and a ninth sealing gasket is arranged on the left side of the bearing body.

As a further description of the above technical solution:

and an eighth sealing gasket is arranged on the right side of the fourth impeller.

The utility model discloses following beneficial effect has:

in the utility model, when dealing with extremely dangerous special working conditions such as high pressure, high lift, high inflammability, high explosiveness, high toxicity and the like, the right side of the bearing body is fixed with the first inner hexagon head screw to form the first isolation sleeve component, a third sealing gasket is arranged between the bearing body and the first inner hexagon head screw, the sealing effect is achieved through the pretightening force of the first inner hexagon head screw, the second isolation sleeve component is added outside the first isolation sleeve component and is fixed on the bearing body by the second stud and the nut, the second sealing gasket is arranged between the bearing body and the second isolation sleeve component, the sealing effect is achieved through the pretightening force of the second stud and the nut, the first cavity is full of conveyed media when the pump is operated, the left side of the first isolation sleeve component is an overflowing component which is in contact with the media, the cavity is arranged in the second cavity, if the pressure in the pump is overhigh, the first isolation sleeve component leaks, the media can leak in the second cavity, at the moment, the second isolation sleeve component plays a role of protection, so that the pump works normally, the barrel bag body and the barrel bag flange cover are added, the barrel bag flange cover is fixed on the bearing box through the first stud and the nut, the barrel bag body is fixed on the barrel bag flange cover through the third stud and the nut, the first sealing gasket is arranged between the barrel bag body and the barrel bag flange cover, and the sealing effect is achieved under the action of the pre-tightening force of the third stud and the nut, in the structure, the barrel bag body and the barrel bag flange cover form a sealed cavity, the whole pump except a motor is sealed in the third cavity, the leakage point of the pump is reduced, even if the fourth sealing gasket, the fifth sealing gasket, the sixth sealing gasket, the seventh sealing gasket, the eighth sealing gasket and the ninth sealing gasket are leaked, a leaked medium can leak in the third cavity, the barrel bag body and the barrel bag flange cover play roles of second pressure bearing and second protection, the potential safety hazard caused by leakage of highly toxic and harmful liquid is avoided, and the use safety of the magnetic pump is improved.

Drawings

Fig. 1 is a schematic structural view of a vertical multistage magnetic pump with double-layer protection according to the present invention.

Illustration of the drawings:

1. a first impeller; 2. a second impeller; 3. a third impeller; 4. a fourth impeller; 5. a first plain bearing assembly; 6. a pump shaft; 7. a first isolation sleeve assembly; 8. a bearing body; 9. a second isolation sleeve assembly; 10. A second plain bearing assembly; 11. a connecting frame; 12. an inner magnetic rotor assembly; 13. a cartridge bag body; 14. an external magnetic drive assembly; 15. a cylinder bag flange cover; 16. a bearing housing; 17. a first chamber; 18. a second stud and nut; 19. a first seal gasket; 20. a second chamber; 21. a second gasket; 22. a first socket head cap screw; 23. a third gasket; 24. a third chamber; 25. a fourth gasket; 26. a fifth gasket; 27. a sixth gasket; 28. a seventh gasket; 29. an eighth gasket; 30. a ninth gasket; 31. a first stud and nut; 32. a third stud and a nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Referring to fig. 1, the present invention provides an embodiment: a vertical multistage magnetic pump with double-layer protection comprises a pump shaft 6, a first impeller 1, a second impeller 2, a third impeller 3 and a fourth impeller 4 are fixedly connected to the outer diameter of the left side of the pump shaft 6 from left to right in sequence, a first sliding bearing assembly 5 is arranged on the outer diameter of the left side of the pump shaft 6 on the right side of the fourth impeller 4, a bearing 8 is arranged on the outer diameter of the pump shaft 6 on the right side of the first sliding bearing assembly 5, the right side of the bearing 8 is connected with a first isolation sleeve assembly 7 through a first inner hexagon head screw 22, a third sealing gasket 23 is arranged between the bearing 8 and the first inner hexagon head screw 22, a second isolation sleeve assembly 9 is arranged outside the first isolation sleeve assembly 7, the second isolation sleeve assembly 9 is connected with a nut 18 and the bearing 8 through a second double-headed screw, the pump shaft 6 is provided with a second sliding bearing assembly 10 on the right side of the bearing 8, an inner magnetic rotor assembly 12 is arranged on the right side of the second sliding bearing assembly 10, an outer magnetic rotor assembly 14 is arranged outside the outer magnetic drive assembly 14, a connecting frame 11 is arranged outside the outer magnetic drive assembly 14, the right side of the pump shaft 6 is connected with a first double-head screw assembly 10 through a first double-barrel-mounted nut assembly 10, a first high-pressure barrel-mounted chamber 17, a first chamber 14 is arranged between the first chamber 14 and a first chamber 17, a first chamber 17 for handling high-head screw cap-head cap 15, the sealing effect is achieved through the pretightening force of a first hexagon socket head screw 22, a second isolation sleeve component 9 is added outside a first isolation sleeve component 7 and is fixed on a bearing body 8 through a second stud and a nut 18, a second sealing gasket 21 is arranged between the bearing body 8 and the second isolation sleeve component 9, the sealing effect is achieved through the pretightening force of the second stud and the nut 18, a first cavity 17 is filled with a conveyed medium when a pump runs, the left side of the first isolation sleeve component 7 is a flow passage component which is in contact with the medium, a cavity is formed in a second cavity 20, if the pressure in the pump is too high, the first isolation sleeve component 7 leaks, the medium leaks in the second cavity 20, the second isolation sleeve component 9 plays a role in protection, the pump works normally, a cylinder bag body 13 and a cylinder bag flange cover 15 are added, the cylinder bag body 15 is fixed on a bearing box 16 through the first stud and the nut 31, the cylinder bag flange cover 13 is fixed on a cylinder bag flange cover 15 through the third stud and the nut 32, the cylinder bag body 13 and the nut 15 are arranged between the cylinder bag body 15, the cylinder bag cover 15, the sealing gasket 28 and the pressure reducing the harmful secondary leakage of a pressure-bearing pump, even if the leakage of the pressure-bearing box 24 is formed by the pressure-bearing box 24, the pressure-bearing pump, the pressure-bearing structure of the pressure-bearing box 13, the pressure-reducing effect of the pressure-bearing pump, the pressure-sealing gasket 28, the pressure-bearing cylinder bag 24, when the extremely dangerous special working conditions such as high pressure, high lift, extremely inflammable, extremely explosive and extremely toxic are met, the first isolation sleeve component 7 is fixed on the right side of the bearing body 8 through the first hexagon socket head cap screw 22, the third sealing gasket 23 is arranged between the bearing body 8 and the first hexagon socket head cap screw 22, the sealing effect is achieved through the pretightening force of the first hexagon socket head cap screw 22, the second isolation sleeve component 9 is additionally arranged outside the first isolation sleeve component 7 and is fixed on the bearing body 8 through the second stud and the nut 18, the second sealing gasket 21 is arranged between the bearing body 8 and the second isolation sleeve component 9, the sealing effect is achieved through the pretightening force of the second stud and the nut 18, the first cavity 17 is filled with a conveyed medium when the pump is operated, the left side of the first isolation sleeve component 7 is an overflowing component which is in contact with the medium, the cavity is formed in the second cavity 20, and if the pressure in the pump is overhigh, the first separation sleeve component 7 leaks, a medium leaks in the second chamber 20, at the moment, the second separation sleeve component 9 plays a role in protection, the pump works normally, the barrel bag body 13 and the barrel bag flange cover 15 are added, the barrel bag flange cover 15 is fixed on the bearing box 16 through the first stud and the nut 31, the barrel bag body 13 is fixed on the barrel bag flange cover 15 through the third stud and the nut 32, the first sealing gasket 19 is arranged between the barrel bag body 13 and the barrel bag flange cover 15, and the sealing effect is achieved under the action of the pre-tightening force of the third stud and the nut 32, in the structure, the barrel bag body 13 and the barrel bag flange cover 15 form a sealed chamber, the whole pump is sealed in the third chamber 24 except a motor, the leakage point of the pump is reduced, even if high pressure causes the fourth sealing gasket 25, the fifth sealing gasket 26, the sixth sealing gasket 27 and the seventh sealing gasket 28, the eighth sealing gasket 29 and the ninth sealing gasket 30 are in leakage, leaked media can be leaked in the third chamber 24, the barrel body 13 and the barrel flange cover 15 play roles of secondary pressure bearing and secondary protection, potential safety hazards caused by leakage of highly toxic and harmful liquid are avoided, the use safety of the magnetic pump is improved, the first impeller 1, the second impeller 2, the third impeller 3 and the third impeller 4 which are arranged meet the high-lift working condition, the pump is designed to be of a vertical structure, and the problem that the bearing body 8 bears the excessive load is solved due to the fact that the pump shaft 6 of the vertical structure pump is not in contact with the bearing body 8.

A second sealing gasket 21 is arranged between the bearing body 8 and the second isolation sleeve component 9, a sixth sealing gasket 27 is arranged on the left side of the first impeller 1, a seventh sealing gasket 28 is arranged between the first impeller 1 and the second impeller 2, a fifth sealing gasket 26 is arranged between the second impeller 2 and the third impeller 3, a fourth sealing gasket 25 is arranged between the third impeller 3 and the fourth impeller 4, a first sealing gasket 19 is arranged between the right side of the cylinder bag body 13 and the cylinder bag flange cover 15, a third sealing gasket 23 is arranged outside the first chamber 17, a third chamber 24 is arranged between the cylinder bag body 13 and the cylinder bag flange cover 15, even if high pressure causes the fourth sealing gasket 25, the fifth sealing gasket 26, the sixth sealing gasket 27, the seventh sealing gasket 28, an eighth sealing gasket 29 and the ninth sealing gasket 30 to leak, leaked media can leak into the third chamber 24, the cylinder bag body 13 and the cylinder bag flange cover 15 play roles of secondary pressure bearing and secondary protection, so as to avoid the potential safety hazard caused by leakage of toxic and harmful liquid, the use of the magnetic force of the pump is improved, the left side of the bearing body 8 is provided with the ninth sealing gasket 30, and the fourth sealing gasket 29 is provided with the eighth sealing gasket 29.

The working principle is as follows: when the extremely dangerous special working conditions such as high pressure, high lift, extremely inflammable, extremely explosive and extremely toxic are met, the first isolation sleeve component 7 is fixed on the right side of the bearing body 8 through the first hexagon socket head cap screw 22, the third sealing gasket 23 is arranged between the bearing body 8 and the first hexagon socket head cap screw 22, the sealing effect is achieved through the pretightening force of the first hexagon socket head cap screw 22, the second isolation sleeve component 9 is additionally arranged outside the first isolation sleeve component 7 and is fixed on the bearing body 8 through the second stud and the nut 18, the second sealing gasket 21 is arranged between the bearing body 8 and the second isolation sleeve component 9, the sealing effect is achieved through the pretightening force of the second stud and the nut 18, the first cavity 17 is filled with a conveyed medium when the pump is operated, the left side of the first isolation sleeve component 7 is an overflowing component which is in contact with the medium, the cavity is formed in the second cavity 20, and if the pressure in the pump is overhigh, the first isolation sleeve component 7 leaks, medium leaks in the second chamber 20, at the moment, the second isolation sleeve component 9 plays a role in protection, so that the pump works normally, the barrel bag body 13 and the barrel bag flange cover 15 are added, the barrel bag flange cover 15 is fixed on the bearing box 16 through the first stud and the nut 31, the barrel bag body 13 is fixed on the barrel bag flange cover 15 through the third stud and the nut 32, the first sealing gasket 19 is arranged between the barrel bag body 13 and the barrel bag flange cover 15, and the sealing effect is achieved under the action of the pre-tightening force of the third stud and the nut 32, in the structure, the barrel bag body 13 and the barrel bag flange cover 15 form a sealed chamber, the whole pump is sealed in the third chamber 24 except a motor, the leakage points of the pump are reduced, even if high pressure causes the fourth sealing gasket 25, the fifth sealing gasket 26, the sixth sealing gasket 27 and the seventh sealing gasket 28, the eighth sealing gasket 29 and the ninth sealing gasket 30 are leaked, leaked media can be leaked in the third chamber 24, the barrel bag body 13 and the barrel bag flange cover 15 have the functions of secondary pressure bearing and secondary protection, potential safety hazards caused by leakage of highly toxic and harmful liquid are avoided, and the use safety of the magnetic pump is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a vertical multistage magnetic drive pump with double-deck protection, includes pump shaft (6), its characterized in that: the utility model provides a pump shaft, including pump shaft (6), first impeller (1), second impeller (2), third impeller (3) and fourth impeller (4) of fixedly connected with in proper order from a left side to the right side on the left side external diameter of pump shaft (6), be provided with first sliding bearing subassembly (5) on the external diameter on the fourth impeller (4) right side that is located of pump shaft (6), be provided with bearing body (8) on the external diameter on first sliding bearing subassembly (5) right side that is located, the right side of bearing body (8) links to each other with first separation sleeve subassembly (7) through first interior hexagon head screw (22), be provided with third sealed pad (23) between bearing body (8) and first interior hexagon head screw (22), the outside of first separation sleeve subassembly (7) is provided with second separation sleeve subassembly (9), second separation sleeve subassembly (9) link to each other with bearing body (8) through second double-end stud and nut (18), pump shaft (6) are located the inside magnet of bearing body (8) right side and are provided with second sliding bearing subassembly (10), the right side of second sliding bearing subassembly (10) is provided with second double-end stud and drives nut (12), the outside magnetic bearing subassembly (11) and drive nut (11) and be provided with outer magnetic bearing box (11), the outside drive the rotor subassembly (11) and be provided with the bearing box (11) and be provided with the bearing subassembly (11), the bearing box (11) and be connected the bearing subassembly (11), the bearing subassembly (11) the outside drive the bearing box (11) that is provided with the bearing subassembly (11) and be provided with the bearing subassembly (11) and the outside drive the bearing subassembly (11) and the bearing subassembly (11) that is provided with the bearing subassembly (11) and the bearing body (11) is provided with the outside drive the bearing body (11) and the bearing body (11) is provided with the bearing body (11) and the bearing body (11) are provided with the bearing body (11) and the outside ) And a cylinder bag flange cover (15), the upper and lower sides of the cylinder bag flange cover (15) are connected with the upper and lower ends of the right side of the cylinder bag body (13) through a third stud and a nut (32) respectively, the left side of the inner magnetic rotor assembly (12) is provided with a first cavity (17), and a second cavity (20) is arranged between the left side of the second isolation sleeve assembly (9) and the first cavity (17).

2. The vertical multistage magnetic pump with double-layer protection according to claim 1, characterized in that: and a second sealing gasket (21) is arranged between the bearing body (8) and the second isolation sleeve component (9).

3. The vertical multistage magnetic pump with double-layer protection according to claim 1, characterized in that: the left side of first impeller (1) is provided with the sixth sealed pad (27), be provided with the seventh sealed pad (28) between first impeller (1) and second impeller (2), be provided with the fifth sealed pad (26) between second impeller (2) and third impeller (3), be provided with the fourth sealed pad (25) between third impeller (3) and fourth impeller (4).

4. The vertical multistage magnetic pump with double-layer protection according to claim 1, characterized in that: a first sealing gasket (19) is arranged between the right side of the cylinder bag body (13) and the cylinder bag flange cover (15).

5. The vertical multistage magnetic pump with double-layer protection according to claim 1, characterized in that: and a third sealing gasket (23) is arranged outside the first chamber (17).

6. The vertical multistage magnetic pump with double-layer protection according to claim 1, characterized in that: and a third chamber (24) is arranged between the cylinder bag body (13) and the cylinder bag flange cover (15).

7. The vertical multistage magnetic pump with double-layer protection according to claim 1, characterized in that: and a ninth sealing gasket (30) is arranged on the left side of the bearing body (8).

8. The vertical multistage magnetic pump with double-layer protection according to claim 1, characterized in that: and an eighth sealing gasket (29) is arranged on the right side of the fourth impeller (4).