CN209705275U - It is a kind of for rotating and moving back and forth the magnetic fluid seal device of equipment - Google Patents
It is a kind of for rotating and moving back and forth the magnetic fluid seal device of equipment Download PDFInfo
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- CN209705275U CN209705275U CN201920263646.7U CN201920263646U CN209705275U CN 209705275 U CN209705275 U CN 209705275U CN 201920263646 U CN201920263646 U CN 201920263646U CN 209705275 U CN209705275 U CN 209705275U
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- annular groove
- pole shoe
- scraping ring
- forth
- seal receptacle
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Abstract
It is a kind of for rotating and moving back and forth the magnetic fluid seal device of equipment, including seal receptacle, its center is equipped with internal diameter and matches with main shaft outer diameter and can be along main shaft through-hole in axial sliding, two-stage continuously step-like annular groove is equipped with to two end symmetrics of seal receptacle along through-hole, it is referred to as annular groove A and B, in annular groove A, it is sequentially with pole shoe II, permanent magnet, pole shoe I, scraping ring from inside to outside, gland is equipped on the outside of scraping ring, the laterally projecting portion of gland matches plus the sum of height of scraping ring and the size of annular groove A；The filler being connected with annular groove B is additionally provided on seal receptacle, for supplementing the loss of magnetic liquid during operation, rotatory sealing both may be implemented in the utility model, the sealing of reciprocating motion can be realized again, solve the problems, such as that mechanical seal and dry gas seals are not available and packing seal has a large amount of leakages, and sealing effect is good, and sealing timeliness is long.
Description
Technical field
The utility model belongs to magnetic fluid sealing field, and in particular to a kind of for rotating and moving back and forth the magnetic of equipment
Property liquid sealing device.
Background technique
On some crystal furnace apparatus, during crystal pulling, it is desirable that the existing rotary motion of main shaft, and have reciprocal fortune
It is dynamic, while it being not allow for any leakage in the process of movement, this proposes very high requirement to sealing, and traditional machinery is close
Envelope, do seal can only realize rotatory sealing, can not achieve reciprocation sealing；Packing seal can accomplish rotation and reciprocation sealing,
But quick abrasion, leakage rate is big, and replacement maintenance is inconvenient.
Summary of the invention
The purpose of the utility model is to provide a kind of for rotating and moving back and forth the magnetic fluid seal device of equipment, uses
In should rotary motion move back and forth equipment again main shaft on, the sealing of rotary motion not only may be implemented, but also may be implemented past
The sealing moved again solves the problems, such as that mechanical seal and dry gas seals are not available and packing seal has a large amount of leakages, and
And sealing effect is good, sealing timeliness is long.
The technical scheme adopted by the utility model is that:
It is a kind of for rotating and moving back and forth the magnetic fluid seal device of equipment, including seal receptacle, in the seal receptacle
The heart is equipped with internal diameter and matches with main shaft outer diameter and can be along main shaft through-hole in axial sliding, along through-hole to two end symmetrics of seal receptacle
Equipped with the continuous step-like annular groove of two-stage, continuously step-like annular groove is referred to as annular groove A and ring to the two-stage
Connected in star B in annular groove A, is sequentially with pole shoe II, permanent magnet, pole shoe I, scraping ring from inside to outside, is equipped on the outside of scraping ring
Section is the gland of T-type, and the laterally projecting portion of gland matches plus the sum of height of scraping ring and the size of annular groove A, scrapes
Ring is made using wear-resisting soft material, prevents loss of magnetic liquid during reciprocal；It is additionally provided on seal receptacle
Filler, for supplementing the loss of magnetic liquid during operation, which is connected with the annular groove B.
Further, gland is connected with seal receptacle using bolt.
Further, the depth of annular groove A radially and the thickness of pole shoe I, pole shoe II match.
Further, one end that pole shoe I, pole shoe II are contacted with main shaft is equipped with the gap flowed through for magnetic liquid, the other end
Equipped with groove C, sealing ring is equipped in groove C.
The utility model has the beneficial effects that
Two groups of symmetrical magnetic fluid sealing units are arranged in the utility model, by two groups of magnetic fluid sealing lists
Magnetic liquid is added between member, and then forms magnetic fluid sealing unit with main shaft and is slidingly sealed, overcomes conventional seals side
Formula shortens the deficiency of seal durability due to dry friction；
In addition, magnetic fluid sealing unit is fixed in seal receptacle, the adding amount (magnetic of magnetic liquid on the one hand can be reduced
Property liquid primary attachment in the outer circle of main shaft), on the other hand, not will increase the load of main shaft in rotary course, avoid transporting
It is swung during turning excessive.
In addition to this, compared with traditional single group magnetic fluid sealing unit, by the way that two groups of symmetrical magnetism are arranged
Hydraulic seal unit is conducive to the holding of magnetic liquid and being uniformly distributed for active force, while this symmetrical configuration position is additionally arranged
Two magnetic liquid fillers, facilitate the supplement of magnetic liquid；That there are also sealing structures is simple for the utility model, and easy for installation is excellent
Point.
Detailed description of the invention
Fig. 1 is utility model device overall structure diagram；
Fig. 2 is seal receptacle structural schematic diagram；
Fig. 3 is scraping ring structural schematic diagram；
In figure, 1, main shaft, 2, bolt, 3, gland, 4, seal receptacle, 5, scraping ring, 6, pole shoe I, 7, permanent magnet, 8, pole shoe II,
9, annular groove B, 10, filler, 11, sealing ring, 12, annular groove A.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As depicted in figs. 1 and 2, a kind of for rotating and moving back and forth the magnetic fluid seal device of equipment, including sealing
Seat 4,4 center of seal receptacle be equipped with internal diameter matched with 1 outer diameter of main shaft and can along the through-hole in axial sliding of main shaft 1, along through-hole to
Two end symmetrics of seal receptacle are equipped with two-stage continuously step-like annular groove, and continuously step-like annular groove divides the two-stage
Also known as it is annular groove A 12 and annular groove B 9, in annular groove A 12, is sequentially with pole shoe II 8, forever from inside to outside
Magnet 7, pole shoe I 6, scraping ring 5, are equipped with the gland 3 that section is T-type on the outside of scraping ring 5, and gland 3 uses 2 phase of bolt with seal receptacle 4
Even, the laterally projecting portion of gland 3 matches plus the sum of height of scraping ring 5 and the radial depth size of annular groove A 12, together
When, the thickness of radial depth and pole shoe I 6, pole shoe II 8 also matches；
Scraping ring 5 is made using wear-resisting soft material, prevents loss of magnetic liquid during reciprocal；It is sealing
It is additionally provided with filler 10 on seat 4, for supplementing the loss of magnetic liquid during operation, the filler 10 and the annular are recessed
Slot B 9 is connected.
One end that pole shoe I 6, pole shoe II 8 are contacted with main shaft 1 is equipped with the gap flowed through for magnetic liquid, and the other end is equipped with recessed
Slot C is equipped with sealing ring 11 in groove C.
In reciprocatory movement, magnetic liquid due to that can be moved back and forth together with main shaft 1 with certain viscosity,
And by setting scraping ring 5, then magnetic liquid can be blocked, it is not allowed to move with main shaft 1, in order to guarantee that it is magnetic that scraping ring stops
The effect of liquid, 1 surface of main shaft need milled processed, and roughness is the smaller the better, and the lip shape of scraping ring is trapezoidal, one side
On the other hand wear-resisting effect plays scraping fluid (as shown in Fig. 3).
Claims (4)
1. a kind of for rotating and moving back and forth the magnetic fluid seal device of equipment, which is characterized in that including seal receptacle (4),
Seal receptacle (4) center is equipped with internal diameter and matches with main shaft (1) outer diameter and can be along main shaft (1) through-hole in axial sliding, along through-hole
The continuous step-like annular groove of two-stage is equipped with to two end symmetrics of seal receptacle, the continuous step-like annular groove of the two-stage
It is referred to as annular groove A (12) and annular groove B (9), in annular groove A (12), is sequentially with pole shoe II from inside to outside
(8), permanent magnet (7), pole shoe I (6), scraping ring (5) are equipped with the gland (3) that section is T-type on the outside of scraping ring (5), gland (3)
Laterally projecting portion matches plus the sum of the height of scraping ring (5) and the size of annular groove A (12), and scraping ring (5) is using wear-resisting
Soft material is made, and prevents loss of magnetic liquid during reciprocal；Filler is additionally provided on seal receptacle (4)
(10), for supplementing the loss of magnetic liquid during operation, which is connected with the annular groove B (9).
2. as described in claim 1 a kind of for rotating and moving back and forth the magnetic fluid seal device of equipment, feature exists
In gland (3) is connected with seal receptacle (4) using bolt (2).
3. as described in claim 1 a kind of for rotating and moving back and forth the magnetic fluid seal device of equipment, feature exists
Match in the thickness of, annular groove A (12) depth radially and pole shoe I (6), pole shoe II (8).
4. as described in claim 1 a kind of for rotating and moving back and forth the magnetic fluid seal device of equipment, feature exists
In one end that pole shoe I (6), pole shoe II (8) are contacted with main shaft (1) is equipped with the gap flowed through for magnetic liquid, and the other end is equipped with recessed
Slot C is equipped with sealing ring (11) in groove C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920263646.7U CN209705275U (en) | 2019-03-01 | 2019-03-01 | It is a kind of for rotating and moving back and forth the magnetic fluid seal device of equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920263646.7U CN209705275U (en) | 2019-03-01 | 2019-03-01 | It is a kind of for rotating and moving back and forth the magnetic fluid seal device of equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209705275U true CN209705275U (en) | 2019-11-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920263646.7U Active CN209705275U (en) | 2019-03-01 | 2019-03-01 | It is a kind of for rotating and moving back and forth the magnetic fluid seal device of equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209705275U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649136A (en) * | 2020-07-14 | 2020-09-11 | 清华大学 | Magnetic powder sealing device for reciprocating shaft |
| CN112392963A (en) * | 2020-11-11 | 2021-02-23 | 清华大学 | Magnetic liquid sealing device |
| CN113848137A (en) * | 2021-09-22 | 2021-12-28 | 天津大学 | Submarine pipeline corrosion fatigue test device capable of dynamically adjusting environmental parameters |
-
2019
- 2019-03-01 CN CN201920263646.7U patent/CN209705275U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649136A (en) * | 2020-07-14 | 2020-09-11 | 清华大学 | Magnetic powder sealing device for reciprocating shaft |
| CN111649136B (en) * | 2020-07-14 | 2020-12-18 | 清华大学 | Magnetic powder sealing device for reciprocating shaft |
| CN112392963A (en) * | 2020-11-11 | 2021-02-23 | 清华大学 | Magnetic liquid sealing device |
| CN113848137A (en) * | 2021-09-22 | 2021-12-28 | 天津大学 | Submarine pipeline corrosion fatigue test device capable of dynamically adjusting environmental parameters |
| CN113848137B (en) * | 2021-09-22 | 2024-04-12 | 天津大学 | Submarine pipeline corrosion fatigue test device capable of dynamically adjusting environmental parameters |
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