CN214093051U - Split type magnetic liquid sealing device - Google Patents
Split type magnetic liquid sealing device Download PDFInfo
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- CN214093051U CN214093051U CN202022809308.4U CN202022809308U CN214093051U CN 214093051 U CN214093051 U CN 214093051U CN 202022809308 U CN202022809308 U CN 202022809308U CN 214093051 U CN214093051 U CN 214093051U
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- pole shoe
- bearing
- rotating shaft
- pole
- lobes
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- 238000007789 sealing Methods 0.000 title claims abstract description 73
- 239000007788 liquid Substances 0.000 title claims abstract description 60
- 239000011553 magnetic fluid Substances 0.000 claims description 14
- 238000002955 isolation Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims 1
- 241000446313 Lamella Species 0.000 abstract description 9
- 230000005389 magnetism Effects 0.000 description 22
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 15
- 239000000565 sealant Substances 0.000 description 12
- 238000009434 installation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a split magnetic liquid sealing device, including the housing part, the apparatus further comprises a rotating shaft, first pole shoe, second pole shoe and permanent magnet, there is the cavity in the housing part, the housing part includes first casing and second casing, the cavity is formed between first casing and second casing, the pivot is worn to establish on the housing part, first casing and second casing are relative in pivot footpath, first pole shoe and second pole shoe all are located the cavity, first pole shoe and second pole shoe encircle respectively in the pivot and at the axial interval of pivot, first pole shoe includes a plurality of first pole shoe lamella that end to end in the pivot week, the second pole shoe includes a plurality of second pole shoe lamella that end to end in the pivot week, the permanent magnet is located the cavity, the ring is around in the pivot and is located between first pole shoe and the second pole shoe. The utility model discloses a split magnetic liquid sealing device can make the even distribution of magnetic liquid between utmost point tooth and pivot, improves sealing device pressure-resistant ability.
Description
Technical Field
The utility model belongs to the technical field of the liquid seal, concretely relates to split magnetic liquid sealing device.
Background
The components in the magnetic liquid seal device need to be assembled from the shaft end of the rotating shaft. When the shaft diameter of the rotating shaft is large or other complicated equipment is connected to two ends of the rotating shaft, the assembly and disassembly are not allowed or inconvenient. In these cases, the entire process is labor and material intensive to install or remove the seal, and may require downtime, resulting in economic losses.
The split type magnetic liquid sealing device is provided in the related art, shaft end parts do not need to be disassembled in the installation and disassembly processes, and the working efficiency is improved. However, the magnetic liquid in this manner is unevenly distributed on the adjacent teeth, and even a magnetic liquid seal is not formed on some teeth, thereby lowering the practical pressure resistance of the sealing device.
Disclosure of Invention
Therefore, the embodiment of the utility model provides a split magnetic liquid sealing device, this split magnetic liquid sealing device can make the even distribution of magnetic liquid between utmost point tooth and pivot, improves sealing device pressure resistance.
According to the utility model discloses split magnetic liquid sealing device includes: the shell component is provided with a cavity inside and comprises a first shell and a second shell, two side surfaces of the first shell and two side surfaces of the second shell are correspondingly connected, and the cavity is formed between the first shell and the second shell; the rotating shaft penetrates through the shell component and can rotate relative to the shell component, at least part of the rotating shaft is positioned in the cavity, and the first shell and the second shell are oppositely arranged in the radial direction of the rotating shaft; the first pole shoe and the second pole shoe are positioned in the cavity and respectively surround the rotating shaft, the first pole shoe and the second pole shoe are arranged at intervals in the axial direction of the rotating shaft, the first pole shoe comprises a plurality of first pole shoe sections which are connected end to end in the circumferential direction of the rotating shaft, the second pole shoe comprises a plurality of second pole shoe sections which are connected end to end in the circumferential direction of the rotating shaft; the permanent magnet is positioned in the cavity, surrounds the rotating shaft and is positioned between the first pole shoe and the second pole shoe.
According to the utility model discloses split magnetic liquid sealing device can make the even distribution of magnetic liquid between utmost point tooth and pivot, improves sealing device pressure-resistant ability.
In some embodiments, the first pole piece comprises two first pole piece lobes disposed opposite and connected to each other in a radial direction of the shaft, and the second pole piece comprises two second pole piece lobes disposed opposite and connected to each other in the radial direction of the shaft.
In some embodiments, the side surface of one of the first pole shoe lobes adjacent the other of the first pole shoe lobes is provided with a first locating portion and a second locating portion, the first locating portion of the one of the first pole shoe lobes mates with the second locating portion of the other of the first pole shoe lobes, the side surface of one of the second pole shoe lobes adjacent the other of the second pole shoe lobes is provided with a third locating portion and a fourth locating portion, and the third locating portion of the one of the second pole shoe lobes mates with the fourth locating portion of the other of the second pole shoe lobes.
In some embodiments, the outer periphery of each of the first plurality of pole shoe lobes is provided with a first groove segment, the first plurality of groove segments are interconnected to form a first groove, the outer periphery of each of the second plurality of pole shoe lobes is provided with a second groove segment, the second plurality of groove segments are interconnected to form a second groove, the magnetic fluid seal further comprises a first seal ring and a second seal ring, the first seal ring is disposed in the first groove and is in contact with the inner circumferential surface of the housing component, the second seal ring is disposed in the second groove and is in contact with the inner circumferential surface of the housing component.
In some embodiments, the split magnetic fluid sealing device further includes a first bearing and a second bearing, the first bearing and the second bearing are located in the cavity, the first bearing and the second bearing are respectively sleeved on the rotating shaft, the first bearing and the second bearing are arranged in the axial direction of the rotating shaft at intervals, the first pole shoe, the second pole shoe and the permanent magnet are located between the first bearing and the second bearing, the first bearing includes a plurality of first bearing lobes, the first bearing lobes are connected end to end in the circumferential direction of the rotating shaft, the second bearing includes a plurality of second bearing lobes, and the second bearing lobes are connected end to end in the circumferential direction of the rotating shaft.
In some embodiments, the split magnetic fluid sealing device further includes a first magnetism isolating ring and a second magnetism isolating ring, the first magnetism isolating ring and the second magnetism isolating ring respectively surround the rotating shaft, the first magnetism isolating ring is disposed between the first bearing and the first pole shoe, and the second magnetism isolating ring is disposed between the second bearing and the second pole shoe.
In some embodiments, the split magnetic liquid sealing device further includes a first positioning element and a second positioning element, the first positioning element and the second positioning element are both located in the cavity, the first positioning element and the second positioning element are respectively sleeved on the rotating shaft, the first positioning element and the second positioning element are arranged in the axial direction of the rotating shaft at intervals, one end of the first positioning element, which is adjacent to the first pole shoe, is in contact with one end of the first bearing, which is far away from the first pole shoe, and one end of the second positioning element, which is adjacent to the second pole shoe, is in contact with one end of the second bearing, which is far away from the second pole shoe.
In some embodiments, the split magnetic liquid sealing device further comprises an end cover member disposed at one side of the housing member, and the rotating shaft is disposed on the end cover member, and the end cover member is used for sealing the chamber.
In some embodiments, the end cap member includes a first end cap and a second end cap, the first end cap and the second end cap are respectively connected to the housing member, and the first end cap and the second end cap are arranged opposite to each other in a radial direction of the rotation shaft.
In some embodiments, the end of the housing member opposite the end cap member is provided with a third groove, and the magnetic liquid seal device further comprises a third seal ring disposed in the third groove.
Drawings
Fig. 1 is a schematic structural diagram of a split magnetic liquid sealing device according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a split magnetic liquid sealing device according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a first pole shoe lobe in a split magnetic fluid seal device according to an embodiment of the present invention.
Figure 4 is a schematic top view of the first pole piece illustrated in figure 3.
Figure 5 is a cross-sectional schematic view of the first pole piece illustrated in figure 3.
Reference numerals:
the housing part 1 is provided with a cover part,
a first housing 101, a second housing 102, a chamber 103, a flange portion 104, a third recess 105,
the rotating shaft (2) is provided with a rotating shaft,
a first pole piece 3, a first pole piece lobe 31, a first positioning portion 311, a second positioning portion 312, a first groove section 313, a first pole tooth 32,
second pole shoe 4, second pole shoe lobes 41, second pole teeth 42,
a permanent magnet 5, a first sealing ring 6, a second sealing ring 7, a first bearing 8, a second bearing 9, a first magnetism isolating ring 10, a second magnetism isolating ring 11, a first positioning piece 12, a second positioning piece 13,
the end cover member 14, the first end cover 141, the second end cover 142, and the third seal ring 15.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1 to 5, the split magnetic liquid sealing device according to the embodiment of the present invention includes a housing member 1, a rotating shaft 2, a first pole piece 3, a second pole piece 4, and a permanent magnet 5.
The housing member 1 has a chamber 103 therein, the housing member 1 includes a first housing 101 and a second housing 102, both sides of the first housing 101 and both sides of the second housing 102 are correspondingly connected, and the chamber 103 is formed between the first housing 101 and the second housing 102. Specifically, the first casing 101 and the second casing 102 are connected by bolts provided outside the first casing 101 and the second casing 102. Preferably, the side of the first casing 101 adjacent to the second casing 102 is coated with the sealant, and the side of the second casing 102 adjacent to the first casing 101 is coated with the sealant. It is to be understood that the connection manner between the first housing 101 and the second housing 102 is not limited thereto.
As shown in fig. 1 and 2, the left end of the housing member 1 is provided with a flange portion 104, the flange portion 104 is provided with a plurality of threaded holes, the flange portion 104 is adapted to be connected with a device to be sealed, and the flange portion 104 is disposed adjacent to a sealing cavity of the device to be sealed. The first housing 101 and the second housing 102 are arranged to face each other in the up-down direction, and the inner wall surfaces of the first housing 101 and the second housing 102 form a chamber 103.
The rotating shaft 2 is arranged on the shell component 1 in a penetrating mode and can rotate relative to the shell component 1, the rotating shaft 2 is at least partially located in the cavity 103, and the first shell 101 and the second shell 102 are arranged oppositely in the radial direction (the up-down direction shown in the figure 2) of the rotating shaft 2. As shown in fig. 1 and 2, the rotating shaft 2 is rotatably provided in the chamber 103, and the rotating shaft 2 extends in the left-right direction, and both left and right ends of the rotating shaft 2 protrude out of the housing member 1.
The first pole shoe 3 and the second pole shoe 4 are both located in the cavity 103, the first pole shoe 3 and the second pole shoe 4 are respectively wound around the rotating shaft 2, the first pole shoe 3 and the second pole shoe 4 are arranged at intervals in an axial direction (a left-right direction as shown in fig. 2) of the rotating shaft 2, the first pole shoe 3 comprises a plurality of first pole shoe lobes 31, the plurality of first pole shoe lobes 31 are connected end to end in a circumferential direction of the rotating shaft 2, the second pole shoe 4 comprises a plurality of second pole shoe lobes 41, and the plurality of second pole shoe lobes 41 are connected end to end in the circumferential direction of the rotating shaft 2.
As shown in fig. 2, a magnetic liquid is attracted between the inner circumferential surface of the first pole piece 3 and the outer circumferential surface of the rotating shaft 2, and a magnetic liquid is attracted between the inner circumferential surface of the second pole piece and the outer circumferential surface of the rotating shaft 2. The inner peripheral surface of the first pole piece 3 is provided with a plurality of first pole teeth 32, the plurality of first pole teeth 32 are arranged at intervals along the left-right direction, the first pole teeth 32 extend along the up-down direction, the profile of the longitudinal section of the first pole teeth 32 is substantially rectangular, a predetermined gap is formed between the inner side surface of the first pole teeth 32 and the outer peripheral surface of the rotating shaft 2 along the up-down direction, and the magnetic liquid is adsorbed in the predetermined gap.
The inner peripheral surface of the second pole piece 4 is provided with a plurality of second pole teeth 42, the plurality of second pole teeth 42 are arranged at intervals along the left-right direction, the second pole teeth 42 extend along the up-down direction, the profile of the longitudinal section of the second pole teeth 42 is substantially rectangular, a predetermined gap is formed between the inner side surface of the second pole teeth 42 and the outer peripheral surface of the rotating shaft 2 along the up-down direction, and the magnetic liquid is adsorbed in the predetermined gap.
The permanent magnet 5 is positioned in the cavity 103, the permanent magnet 5 surrounds the rotating shaft 2, and the permanent magnet 5 is positioned between the first pole piece 3 and the second pole piece 4. As shown in fig. 2, the left end surface of the permanent magnet 5 is in contact with the right end surface of the first pole piece 3, the right end surface of the permanent magnet 5 is in contact with the left end surface of the second pole piece 4, the outer circumferential surface of the permanent magnet 5 is in contact with the inner wall surface of the housing member 1, and the inner circumferential surface of the permanent magnet 5 and the outer circumferential surface of the shaft sleeve have a predetermined distance in the vertical direction.
According to the utility model discloses split magnetic liquid sealing device, through setting up housing part 1, first pole shoe 3 and the second pole shoe 4 of split type, make the even distribution of magnetic liquid between pole shoe and pivot 2, improve sealing device pressure resistance, still be convenient for magnetic liquid sealing device's installation and follow-up maintenance improve assembly efficiency, reduce the maintenance cost.
In some embodiments, the first pole shoe 3 comprises two first pole shoe lobes 31, the two first pole shoe lobes 31 being arranged opposite to each other in the radial direction of the rotating shaft 2 and connected to each other, and the second pole shoe 4 comprises two second pole shoe lobes 41, the two second pole shoe lobes 41 being arranged opposite to each other in the radial direction of the rotating shaft 2 and connected to each other. As shown in fig. 2, the two first pole shoe lobes 31 have the same size, the two first pole shoe lobes 31 are all wound around the rotating shaft 2, the two first pole shoe lobes 31 are connected end to end, the second pole shoe lobes 41 have the same size as the first pole shoe lobes 31, the two second pole shoe lobes 41 are all wound around the rotating shaft 2, and the two second pole shoe lobes 41 are connected end to end. Preferably, the two first pole shoe pieces 31 are adhered to each other by a sealant, and the two second pole shoe pieces 41 are adhered to each other by a sealant. Specifically, the side surface of one first pole shoe segment 31 adjacent to the other first pole shoe segment 31 is coated with a sealant, and the two first pole shoe segments 31 are connected by the sealant. The side surface of one second pole shoe lobe 41 adjacent to the other second pole shoe lobe 41 is coated with a sealant, and the two second pole shoe lobes 41 are connected through the sealant. It is understood that the connection between the two first pole shoe lobes 31 and the connection between the two second pole shoe lobes 41 are not limited thereto.
According to the utility model discloses split magnetic liquid sealing device, two first pole shoe lamellas 31 encircle in pivot 2, make the more even distribution of magnetic liquid between first pole shoe 3 and the pivot 2 in pivot 2 periphery, two second pole shoe lamellas 41 encircle in pivot 2, make the more evenly distributed of magnetic liquid between second pole shoe 4 and the pivot 2 in pivot 2 periphery, improved magnetic liquid sealing device's pressure resistance.
In some embodiments, the side surface of one first pole piece 31 adjacent to the other first pole piece 31 is provided with a first positioning portion 311 and a second positioning portion 312, the first positioning portion 311 of one first pole piece 31 is fitted with the second positioning portion 312 of the other first pole piece 31, the side surface of one second pole piece 41 adjacent to the other second pole piece 41 is provided with a third positioning portion (not shown) and a fourth positioning portion (not shown), and the third positioning portion of one second pole piece 41 is fitted with the fourth positioning portion of the other second pole piece 41.
As shown in fig. 3, both the first positioning portion 311 and the second positioning portion 312 are provided on the lower end surface of the first pole shoe piece 31, and the first positioning portion 311 and the second positioning portion 312 are arranged oppositely in the left-right direction. Specifically, the first positioning portion 311 is a positioning protrusion extending in the up-down direction, the second positioning portion 312 is a positioning groove provided on the first pole shoe segment 31, the positioning groove extends in the up-down direction, and the positioning protrusion on one first pole shoe segment 31 is matched with the positioning groove on the other first pole shoe segment 31. The third positioning portion has the same structure as the first positioning portion 311, and the fourth positioning portion has the same structure as the second positioning portion 312.
According to the utility model discloses split magnetic liquid sealing device through setting up first location portion 311 and second location portion 312, realizes the accurate positioning between two first pole shoe lamella 31, and indirect also can make first pole shoe 3 and the direct magnetic liquid distribution of pivot 2 more even to improve magnetic liquid's pressure resistance. By providing the third positioning portion and the fourth positioning portion, accurate positioning between the two second pole shoe lobes 41 is achieved.
In some embodiments, the outer periphery of the first plurality of pole shoe lobes 31 is provided with a first groove section 313, the first plurality of groove sections 313 are communicated with each other to form a first groove, the outer periphery of the second plurality of pole shoe lobes 41 is provided with a second groove section (not shown), the second plurality of groove sections are communicated with each other to form a second groove, the magnetic liquid sealing device further comprises a first sealing ring 6 and a second sealing ring 7, the first sealing ring 6 is provided in the first groove, the first sealing ring 6 is in contact with the inner circumferential surface of the housing member 1, the second sealing ring 7 is provided in the second groove, and the second sealing ring 7 is in contact with the inner circumferential surface of the housing member 1.
As shown in fig. 3, the first groove section 313 extends in the circumferential direction of the first pole shoe lobe 31, and the dimension of the first groove section 313 in the width direction of the first pole shoe lobe 31 is smaller than the width of the first pole shoe lobe 31. The second groove segment has the same structure and dimensions as the first groove segment 313.
According to the utility model discloses split magnetic liquid sealing device is through setting up first recess and second recess to establish first sealing washer 6 and second sealing washer 7 in first recess and second recess, can avoid magnetic liquid to reveal between by the outer disc of pole shoe and the 1 internal face of housing part, improve magnetic liquid's leakproofness.
In some embodiments, the split magnetic fluid sealing device further includes a first bearing 8 and a second bearing 9, the first bearing 8 and the second bearing 9 are both located in the cavity 103, the first bearing 8 and the second bearing 9 are respectively sleeved on the rotating shaft 2, the first bearing 8 and the second bearing 9 are arranged at intervals in the axial direction of the rotating shaft 2, the first pole shoe 3, the second pole shoe 4 and the permanent magnet 5 are all located between the first bearing 8 and the second bearing 9, the first bearing 8 includes a plurality of first bearing 8 lobes (not shown), the plurality of first bearing 8 lobes are connected end to end in the circumferential direction of the rotating shaft 2, the second bearing 9 includes a plurality of second bearing 9 lobes (not shown), and the plurality of second bearing 9 lobes are connected end to end in the circumferential direction of the rotating shaft 2.
As shown in fig. 2, the first bearing lobes 8 all surround the rotating shaft 2, the first bearing lobes 8 are connected end to end in the circumferential direction of the rotating shaft 2, the second bearing lobes 9 all surround the rotating shaft 2, the second bearing lobes 9 are connected end to end in the circumferential direction of the rotating shaft 2, and the first bearing lobes 8 and the second bearing lobes 9 have the same size. Specifically, the side face of one first bearing 8 lobe adjacent to the other first bearing 8 lobe is coated with a sealant, and the two adjacent first bearing 8 lobes are adhered through the sealant. The side surface of one second bearing 9 lobe, which is adjacent to the other second bearing 9 lobe, is coated with sealant, and the two adjacent second bearing 9 lobes are adhered through the sealant. It is understood that the connection manner between the plurality of first pole shoe lobes 31 is not limited thereto, and the connection manner between the plurality of second pole shoe lobes 41 is not limited thereto.
According to the utility model discloses split magnetic liquid sealing device through setting up split type's first bearing 8 and second bearing 9, can make the even distribution of magnetic liquid between pole shoe and pivot 2, improves magnetic liquid sealing device's compressive capacity, and the installation and the dismantlement of the bearing of still being convenient for improve sealing device's assembly efficiency.
In some embodiments, the split magnetic fluid sealing device further includes a first magnetism isolating ring 10 and a second magnetism isolating ring 11, the first magnetism isolating ring 10 and the second magnetism isolating ring 11 respectively surround the rotating shaft 2, the first magnetism isolating ring 10 is disposed between the first bearing 8 and the first pole shoe 3, and the second magnetism isolating ring 11 is disposed between the second bearing 9 and the second pole shoe 4.
As shown in fig. 2, the left end surface of the first magnetism isolating ring 10 is in contact with the right end surface of the first bearing 8, the right end surface of the first magnetism isolating ring 10 is in contact with the left end surface of the first pole shoe 3, the left end surface of the second magnetism isolating ring 11 is in contact with the right end surface of the second pole shoe 4, and the right end surface of the second magnetism isolating ring 11 is in contact with the left end surface of the second bearing 9.
According to the utility model discloses split magnetic liquid sealing device through setting up first magnetic ring 10 and second magnetic ring 11 that separates, has increased the magnetic resistance of magnetic circuit, makes magnetic liquid adsorb between first pole shoe 3 and pivot 2 and between second pole shoe 4 and pivot 2.
In some embodiments, the split magnetic liquid sealing device further includes a first positioning element 12 and a second positioning element 13, the first positioning element 12 and the second positioning element 13 are both located in the cavity 103, the first positioning element 12 and the second positioning element 13 are respectively sleeved on the rotating shaft 2, the first positioning element 12 and the second positioning element 13 are arranged at intervals in the axial direction of the rotating shaft 2, one end of the first positioning element 12 adjacent to the first pole piece 3 (the right end face of the first positioning element 12 shown in fig. 2) is in contact with one end of the first bearing 8 away from the first pole piece 3 (the left end face of the first bearing 8 shown in fig. 2), and one end of the second positioning element 13 adjacent to the second pole piece 4 (the left end face of the second positioning element 13 shown in fig. 2) is in contact with one end of the second bearing 9 away from the second pole piece 4 (the right end face of the second bearing 9 shown in fig. 2). Specifically, the first positioning member 12 and the second positioning member 13 are both positioning rings.
According to the utility model discloses split magnetic liquid sealing device through setting up first setting element 12 and second setting element 13, fixes a position and fixes the axial position of first bearing 8 and second bearing 9, prevents that axial displacement from taking place for first bearing 8 and second bearing 9, improves the stability of magnetic liquid sealing device operation.
In some embodiments, the split magnetic liquid sealing device further includes an end cover member 14, the end cover member 14 is disposed on one side of the housing member 1, the rotating shaft 2 is disposed on the end cover member 14, and the end cover member 14 is used for sealing the chamber 103.
As shown in fig. 2, the left end surface of the end cover member 14 abuts against the right end surface of the second bearing 9, the end cover member 14 is provided at the right end of the case member 1, and the end cover member 14 is screwed to the case member 1.
In some embodiments, the end cover member 14 includes a first end cover 141 and a second end cover 142, the first end cover 141 and the second end cover 142 are connected to the housing member 1, respectively, and the first end cover 141 and the second end cover 142 are arranged opposite to each other in the radial direction of the rotation shaft 2.
As shown in fig. 2, the first end cap 141 is coupled to a right end surface of the first casing 101, and the second end cap 142 is coupled to a right end surface of the second casing 102. According to the utility model discloses split magnetic liquid sealing device through setting up first end cover 141 and second end cover 142, can link to each other with first casing 101 and second casing 102 respectively, can improve the leakproofness to cavity 103, still is convenient for magnetic liquid sealing device's installation and dismantlement.
In some embodiments, the housing member 1 is provided with a third groove 105 at an end opposite the end cap member 14 (the right end of the housing member 1 as shown in fig. 2), and the magnetic liquid sealing device further comprises a third sealing ring 15, the third sealing ring 15 being provided in the third groove 105.
The utility model discloses split magnetic liquid sealing device through setting up third sealing washer 15, has improved the leakproofness between casing and the sealed chamber.
The split magnetic liquid seal device of some specific examples of the present invention is described below with reference to fig. 1 to 5.
According to the utility model discloses split magnetic liquid sealing device includes housing part 1, pivot 2, first pole shoe 3, second pole shoe 4, permanent magnet 5, first sealing washer 6, second sealing washer 7, first bearing 8, second bearing 9, first magnetic isolation ring 10, second magnetic isolation ring 11, first setting element 12, second setting element 13, end cover part 14, third sealing washer 15 and establishes third recess 105 on housing part 1.
The housing member 1 has a chamber 103 therein, the housing member 1 includes a first housing 101 and a second housing 102, both sides of the first housing 101 and both sides of the second housing 102 are correspondingly connected, and the chamber 103 is formed between the first housing 101 and the second housing 102. The first casing 101 and the second casing 102 are connected by bolts provided outside the first casing 101 and the second casing 102.
The rotating shaft 2 penetrates through the housing member 1, the rotating shaft 2 is rotatably arranged in the cavity 103, the rotating shaft 2 extends along the left-right direction, the left end and the right end of the rotating shaft 2 extend out of the housing member 1, and the first housing 101 and the second housing 102 are oppositely arranged in the up-down direction.
The first pole shoe 3 and the second pole shoe 4 are both located in the cavity 103, the first pole shoe 3 and the second pole shoe 4 are respectively wound on the rotating shaft 2, the first pole shoe 3 and the second pole shoe 4 are arranged at intervals in the left-right direction, the first pole shoe 3 comprises a plurality of first pole shoe lobes 31, the plurality of first pole shoe lobes 31 are connected end to end in the circumferential direction of the rotating shaft 2, the second pole shoe 4 comprises a plurality of second pole shoe lobes 41, and the plurality of second pole shoe lobes 41 are connected end to end in the circumferential direction of the rotating shaft 2.
The first pole shoe 3 comprises two first pole shoe lobes 31, the two first pole shoe lobes 31 being arranged opposite one another in the radial direction of the rotary shaft 2 and connected to one another, and the second pole shoe 4 comprises two second pole shoe lobes 41, the two second pole shoe lobes 41 being arranged opposite one another in the radial direction of the rotary shaft 2 and connected to one another.
The side surface of one first pole shoe segment 31 adjacent to the other first pole shoe segment 31 is provided with a positioning protrusion and a positioning groove arranged on the first pole shoe segment 31, the positioning groove extends along the up-down direction, the positioning protrusion on one first pole shoe segment 31 is matched with the positioning groove on the other first pole shoe segment 31, the side surface of one second pole shoe segment 41 adjacent to the other second pole shoe segment 41 is provided with a third positioning part (not shown) and a fourth positioning part (not shown), and the third positioning part of one second pole shoe segment 41 is matched with the fourth positioning part of the other second pole shoe segment 41.
The outer peripheries of the first pole shoe petals 31 are provided with first groove sections 313, the first groove sections 313 are communicated with each other to form first grooves, the outer peripheries of the second pole shoe petals 41 are provided with second groove sections (not shown), the second groove sections are communicated with each other to form second grooves, the first sealing ring 6 is arranged in the first grooves, the first sealing ring 6 is in contact with the inner circumferential surface of the housing component 1, the second sealing ring 7 is arranged in the second grooves, and the second sealing ring 7 is in contact with the inner circumferential surface of the housing component 1.
The permanent magnet 5 is positioned in the cavity 103, the permanent magnet 5 surrounds the rotating shaft 2, and the permanent magnet 5 is positioned between the first pole piece 3 and the second pole piece 4.
First bearing 8 and second bearing 9 all are located cavity 103, first bearing 8 and second bearing 9 overlap respectively and establish on pivot 2, and first bearing 8 and second bearing 9 are at the epaxial interval arrangement of pivot 2, first pole piece 3, second pole piece 4 and permanent magnet 5 all are located between first bearing 8 and the second bearing 9, first bearing 8 includes a plurality of first bearing 8 lamellas (not shown), a plurality of first bearing 8 lamellas are end to end in the circumference of pivot 2, second bearing 9 includes a plurality of second bearing 9 lamellas (not shown), a plurality of second bearing 9 lamellas are end to end in the circumference of pivot 2.
The first magnetism isolating ring 10 and the second magnetism isolating ring 11 are respectively surrounded on the rotating shaft 2, the first magnetism isolating ring 10 is arranged between the first bearing 8 and the first pole shoe 3, and the second magnetism isolating ring 11 is arranged between the second bearing 9 and the second pole shoe 4.
The first positioning piece 12 and the second positioning piece 13 are both located in the cavity 103, the first positioning piece 12 and the second positioning piece 13 are respectively sleeved on the rotating shaft 2, the first positioning piece 12 and the second positioning piece 13 are arranged at intervals in the left-right direction, the right end face of the first positioning piece 12 is in contact with the left end face of the first bearing 8, and the left end face of the second positioning piece 13 is in contact with the right end face of the second bearing 9.
The cover member 14 is provided at the right end of the housing member 1, the cover member 14 is screwed to the housing member 1, the rotating shaft 2 is inserted into the cover member 14, the left end surface of the cover member 14 abuts against the right end surface of the second bearing 9, and the cover member 14 seals the chamber 103.
The cover member 14 includes a first cover 141 and a second cover 142, the first cover 141 is connected to the right end surface of the first casing 101, the second cover 142 is connected to the right end surface of the second casing 102, and the first cover 141 and the second cover 142 are arranged opposite to each other in the radial direction of the rotation shaft 2.
The right end of the housing part 1 is provided with a third groove 105, and a third seal ring 15 is arranged in the third groove 105.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A split magnetic liquid seal, comprising:
the shell component is provided with a cavity inside and comprises a first shell and a second shell, two side surfaces of the first shell and two side surfaces of the second shell are correspondingly connected, and the cavity is formed between the first shell and the second shell;
the rotating shaft penetrates through the shell component and can rotate relative to the shell component, at least part of the rotating shaft is positioned in the cavity, and the first shell and the second shell are oppositely arranged in the radial direction of the rotating shaft;
the first pole shoe and the second pole shoe are positioned in the cavity and respectively surround the rotating shaft, the first pole shoe and the second pole shoe are arranged at intervals in the axial direction of the rotating shaft, the first pole shoe comprises a plurality of first pole shoe sections which are connected end to end in the circumferential direction of the rotating shaft, the second pole shoe comprises a plurality of second pole shoe sections which are connected end to end in the circumferential direction of the rotating shaft;
the permanent magnet is positioned in the cavity, surrounds the rotating shaft and is positioned between the first pole shoe and the second pole shoe.
2. The split magnetic fluid seal of claim 1, wherein said first pole piece comprises two first pole piece lobes disposed opposite one another in a radial direction of said shaft and connected to one another,
the second pole shoe comprises two second pole shoe lobes which are arranged opposite to each other in the radial direction of the rotating shaft and are connected with each other.
3. The split magnetic fluid seal of claim 2, wherein a side surface of one of said first pole piece segments adjacent to another of said first pole piece segments is provided with a first detent and a second detent, said first detent of said one of said first pole piece segments mating with said second detent of said another of said first pole piece segments,
and the side surface of one second pole shoe piece, which is adjacent to the other second pole shoe piece, is provided with a third positioning part and a fourth positioning part, and the third positioning part of the one second pole shoe piece is matched with the fourth positioning part of the other second pole shoe piece.
4. The split magnetic fluid seal of claim 1, wherein a plurality of said first pole shoe lobes are each provided with a first groove segment on an outer periphery thereof, said first groove segments being interconnected to form a first groove, a plurality of said second pole shoe lobes are each provided with a second groove segment on an outer periphery thereof, said second groove segments being interconnected to form a second groove,
the magnetic liquid sealing device further comprises a first sealing ring and a second sealing ring, the first sealing ring is arranged in the first groove and is in contact with the inner peripheral surface of the shell component, the second sealing ring is arranged in the second groove and is in contact with the inner peripheral surface of the shell component.
5. The split magnetic fluid seal apparatus of claim 1, further comprising a first bearing and a second bearing, wherein the first bearing and the second bearing are located in the chamber, the first bearing and the second bearing are respectively sleeved on the rotating shaft, the first bearing and the second bearing are arranged at intervals in an axial direction of the rotating shaft, the first pole piece, the second pole piece and the permanent magnet are located between the first bearing and the second bearing,
the first bearing comprises a plurality of first bearing lobes which are connected end to end in the circumferential direction of the rotating shaft, the second bearing comprises a plurality of second bearing lobes which are connected end to end in the circumferential direction of the rotating shaft.
6. The split magnetic fluid seal apparatus of claim 5, further comprising a first magnetic isolation ring and a second magnetic isolation ring, wherein said first magnetic isolation ring and said second magnetic isolation ring respectively surround said rotating shaft, said first magnetic isolation ring is disposed between said first bearing and said first pole shoe, and said second magnetic isolation ring is disposed between said second bearing and said second pole shoe.
7. The split magnetic fluid sealing device according to claim 5 or 6, further comprising a first positioning element and a second positioning element, wherein the first positioning element and the second positioning element are both located in the chamber, the first positioning element and the second positioning element are respectively sleeved on the rotating shaft, the first positioning element and the second positioning element are arranged in the axial direction of the rotating shaft at intervals, one end of the first positioning element, which is adjacent to the first pole piece, is in contact with one end of the first bearing, which is far away from the first pole piece, and one end of the second positioning element, which is adjacent to the second pole piece, is in contact with one end of the second bearing, which is far away from the second pole piece.
8. The split magnetic liquid seal device of claim 1, further comprising an end cap member disposed on one side of the housing member and through which the shaft passes, the end cap member being configured to seal the chamber.
9. The split magnetic liquid seal of claim 8, wherein the end cap member comprises a first end cap and a second end cap, the first end cap and the second end cap being connected to the housing member, respectively, and the first end cap and the second end cap being arranged opposite to each other in a radial direction of the rotating shaft.
10. The split magnetic fluid seal of claim 8 or 9, wherein an end of the housing member opposite the end cap member is provided with a third groove, the magnetic fluid seal further comprising a third seal ring disposed within the third groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022809308.4U CN214093051U (en) | 2020-11-27 | 2020-11-27 | Split type magnetic liquid sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022809308.4U CN214093051U (en) | 2020-11-27 | 2020-11-27 | Split type magnetic liquid sealing device |
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| Publication Number | Publication Date |
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| CN214093051U true CN214093051U (en) | 2021-08-31 |
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| CN202022809308.4U Active CN214093051U (en) | 2020-11-27 | 2020-11-27 | Split type magnetic liquid sealing device |
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| CN (1) | CN214093051U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294423A (en) * | 2021-12-10 | 2022-04-08 | 清华大学 | Magnetic liquid sealing device |
| CN114719022A (en) * | 2022-04-01 | 2022-07-08 | 中国矿业大学 | Split shaft diameter combined type magnetic liquid sealing device |
-
2020
- 2020-11-27 CN CN202022809308.4U patent/CN214093051U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294423A (en) * | 2021-12-10 | 2022-04-08 | 清华大学 | Magnetic liquid sealing device |
| CN114719022A (en) * | 2022-04-01 | 2022-07-08 | 中国矿业大学 | Split shaft diameter combined type magnetic liquid sealing device |
| CN114719022B (en) * | 2022-04-01 | 2022-12-20 | 中国矿业大学 | Split shaft diameter combined type magnetic liquid sealing device |
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