CN206513836U - A kind of reciprocating magnetic liquid self-circulation lubricating sealing device - Google Patents
A kind of reciprocating magnetic liquid self-circulation lubricating sealing device Download PDFInfo
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- CN206513836U CN206513836U CN201720019315.XU CN201720019315U CN206513836U CN 206513836 U CN206513836 U CN 206513836U CN 201720019315 U CN201720019315 U CN 201720019315U CN 206513836 U CN206513836 U CN 206513836U
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- piston
- cylinder
- pistons end
- ring
- annular magnet
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- 239000007788 liquid Substances 0.000 title claims abstract description 44
- 238000007789 sealing Methods 0.000 title claims abstract description 18
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 11
- 239000000314 lubricant Substances 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims description 3
- 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 21
- 238000010586 diagram Methods 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 229910003145 α-Fe2O3 Inorganic materials 0.000 description 2
- 101100118236 Candida albicans (strain SC5314 / ATCC MYA-2876) EFH1 gene Proteins 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model is related to a kind of reciprocating magnetic liquid self-circulation lubricating sealing device, it is spindle including annular magnet, piston and cylinder etc., in the middle part of piston, middle part forms angle α with end junction, middle part, which is provided with annular groove, annular groove, is provided with O-ring seals and piston ring；Annular magnet is placed on the outside of cylinder, positioned at the midpoint of piston back-and-forth movement.The utility model compact conformation, can meet the condition of work of high-voltage high-speed, effectively can reduce and prevent the leakage and loss of lubricant, improve the service life and sealing effectiveness of piston ring；And to piston movement direction without particular/special requirement.
Description
Technical field
The utility model belongs to reciprocating mechanical field, and in particular to a kind of reciprocating magnetic liquid self-circulation lubricating
Sealing device, available for reciprocating machines such as internal combustion engine, air-conditioning system, heavy-duty machinery bearings.
Background technology
The soliquid that magnetic liquid is made up of nano magnetic particle, base load liquid and the part of surfactant three, be
Have the functional fluid of magnetic and mobility concurrently.Due to the peculiar property of magnetic liquid, magnetic liquid is widely used as in sealing
Agent and lubricant, these most of applications are to realize static sealing or rotatory sealing by magnetic liquid, are such as applied to true
Sky sealing and rotation motor etc.；Magnetic liquid is less applied to reciprocating mechanical structure, and most of magnetic fluid sealing
Structure can not realize that the self-loopa of magnetic liquid is utilized.
Different structure and the reciprocating machine of size are widely used in industry and domestic appliance, and typical example has：It is interior
Reciprocal bearing in combustion engine, air-conditioning system and heavy-duty machinery.Traditional reciprocating machine reaches by piston ring to pumping chamber
To sealing effectiveness, and add grease series lubricant agent.It is mechanical for continuous back and forth movement, during the back and forth movement of piston, lubrication
Agent or sealant can be thrown off the zone of action under inertia force effect；If not supplementing in time, bleeding of lubricant may make device
Break down and bring security threat to staff.Enough lubricants are provided to ensure between reciprocal axle and its surrounding structure
It is always the technological difficulties that reciprocating machine faces not lose lubrication.
Utility model content
In order to overcome the shortcoming of prior art, the utility model provide one kind effectively can reduce and prevent lubricant be lost in and
The reciprocating magnetic liquid self-circulation lubricating sealing device of leakage.
The technical solution adopted in the utility model is as follows：
A kind of reciprocating magnetic liquid self-circulation lubricating sealing device, including piston shaft 1, magnetic liquid lubrication agent 3, annular
Magnet 5, piston 8 and cylinder 9；
Piston 8 includes 8a, the 8b of pistons end I and the 8c of pistons end II in the middle part of piston；8a is spindle in the middle part of piston, middle
Section diameter is maximum and cylindrical, and the ratio that interlude accounts for 8a overall lengths in the middle part of piston is more than 25%, less than 100%, toward piston middle part
8a two ends diameter is gradually reduced；8a two ends are connected with the 8b of pistons end I and the 8c of pistons end II respectively in the middle part of piston, junction shape
90 ° of angulation α, α ＜；The 8b of pistons end I is connected with piston shaft 1；
Piston 8 is placed in inside cylinder 9, is provided with least one annular groove 4, annular groove 4 and is set in the middle part of 8a in the middle part of piston
There are O-ring seals 7, the overcoat ring plugging 6 of O-ring seals 7, piston ring 6 is contacted with the inwall of cylinder 9, magnetic liquid lubrication agent 3
Lubricant liquid film is formed between piston ring 6 and the inwall of cylinder 9；Gap 2 is formed in the middle part of piston between 8a two ends and the inwall of cylinder 9；
The 8b of the pistons end I and 8c of pistons end II is smaller than 0.143mm with the inwall of cylinder 9；
Annular magnet 5 is placed in the outside of cylinder 9 and combined closely with its outer surface, and annular magnet 5 is located at the back and forth movement of piston 8
Midpoint, piston 8 remains that the 8b of pistons end I and the 8c of pistons end II are respectively at 5 pairs of annular magnet in motion process
Answer the both sides of position；Radially, magnetic blow out centre regional magnetic field intensity is more than 1.5kA/m to the magnetizing direction of annular magnet 5.
The quantity of annular magnet 5 is more than one；Annular magnet 5 is permanent magnet, can be a complete entirety, also may be used
To be made up of polylith magnet.
Utility model works principle：
Below so that piston moves horizontally in cylinder as an example, its operation principle is illustrated, but in actual applications,
To piston movement direction without particular/special requirement, available for level, vertical or other any directions.
Under the magneticaction that annular magnet 5 is produced, magnetic liquid lubrication agent 3 can be adsorbed to the corresponding position of annular magnet 5
On the inwall of cylinder 9 put；Piston 8 is moved reciprocatingly under the drive of piston shaft 1 in cylinder 9, and piston ring 6 is produced with the inwall of cylinder 9
Raw mutually to slide, magnetic liquid lubrication agent 3 forms lubricant liquid film between piston ring 6 and the inwall of cylinder 9（Also serve as simultaneously close
Seal agent）.
When piston 8 is turned right from high order end to be accelerated, a small amount of magnetic liquid lubrication agent 3 can be stagnant under inertia force effect
After the motion of piston 8, the gap in the left side of piston ring 6 is flowed to, remaining magnetic liquid lubrication agent 3 continues in piston ring 6 and cylinder 9
Lubricating liquid film is formed between inwall, lubrication is played；When piston ring 6, piston 8 will do retarded motion to the right behind midpoint, used
Property power effect under a small amount of magnetic liquid lubrication agent 3 can flow to the right side gap of piston ring 6；As shown in Fig. 2 now as piston 8 connects
Terminal on the right side of nearly stroke, annular magnet 5 is located above the gap in the left side of piston ring 6, and now, piston 8 is accelerated from left to right
When be thrown off the magnetic liquid lubrication agent 3 of piston ring 6 gas with the corresponding position of annular magnet 5 will be adsorbed under magneticaction
On the inwall of cylinder 9；
Piston 8, which is moved to, to be started after the terminal of right side from the right return motion for turning left and doing and first accelerating to slow down afterwards, when piston ring 6 is passed through
When crossing 5 underface of annular magnet, the magnetic liquid lubrication agent 3 taken away and be adsorbed in the corresponding position of annular magnet 5 can be scraped, profit is continuously formed
Sliding film.As shown in figure 3, near piston movement to left side terminal, annular magnet 5 is located above the gap on the right side of piston ring 6, quilt
Get rid of to magnetic liquid lubrication agent 3 herein and be adsorbed under magneticaction on the inwall of cylinder 9 of the corresponding position of annular magnet 5, treated
When piston 8 is moved across again, the magnetic liquid lubrication agent 3 being adsorbed in herein will be scraped by piston ring 6 to be taken away, and continuously forms lubrication
Liquid film.As described above, the self-loopa of lubricant can be realized, the leakage and loss of lubricant are effectively reduced and prevented.
Magnetic liquid lubrication agent 3 can be limited in gap 2 by 8a using spindle-type α-Fe2O3 in the middle part of piston, the 8b of pistons end I
Gap with the 8c of pistons end II and the inwall of cylinder 9 is minimum, can effectively prevent the leakage of lubricant；The center of piston 8 is provided with ring
Connected in star 4, which is conducive to magnetic liquid lubrication agent 3 being limited near piston ring 6, reaches sealing effectiveness.
The beneficial effects of the utility model：
1st, the utility model utilizes magnetic liquid property, applies magnetic field by annular magnet, realizes in reciprocating machine
The self-loopa of lubricant is utilized, and effectively can reduce and prevent lubricant leakage, improves the service life of piston ring；
2nd, sealing lubricating arrangement of the present utility model can meet higher operating pressure and movement velocity；
3rd, lubricating system of the present utility model to piston movement direction without particular/special requirement, available for level, it is vertical or other
Any direction；
4th, annular groove is provided with the middle of piston, is conducive to lubricant being limited near piston ring；
5th, piston uses spindle-type α-Fe2O3, is conducive to lubricant being limited in the gap between piston and cylinder, enters one
Step reduces the leakage of lubricant.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model device；
Fig. 2 is the fundamental diagram that the utility model device piston 8 moves to terminal on the right side of stroke；
Fig. 3 is the fundamental diagram that the utility model device piston 8 moves to terminal on the left of stroke；
Fig. 4 is the apparatus structure schematic diagram described in embodiment 2；
Fig. 5 is the apparatus structure schematic diagram described in embodiment 3；
Fig. 6 is the apparatus structure schematic diagram described in embodiment 4；
Fig. 7 is the apparatus structure schematic diagram described in embodiment 5；
Fig. 8 is the annular magnet structural representation that the described device of embodiment 6 is used.
In figure：1- piston rods, 2- gaps, 3- magnetic liquid lubrication agent, 4- annular grooves, 5- annular magnets, 6- piston rings,
In the middle part of 7-O shape sealing rings, 8- pistons, 8a- pistons, 8b- pistons ends I, 8c- pistons ends II, 9- cylinders.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, but content of the present utility model is not limited to
Shown in embodiment and accompanying drawing.
Embodiment 1
As shown in figure 1, a kind of reciprocating magnetic liquid self-circulation lubricating sealing device, including piston shaft 1, magnetic liquid profit
Lubrication prescription 3, annular magnet 5, piston 8 and cylinder 9；
Piston 8 includes 8a, the 8b of pistons end I and the 8c of pistons end II in the middle part of piston；8a is spindle in the middle part of piston, middle
Section diameter is maximum and cylindrical, and interlude accounts for 30% of 8a overall lengths in the middle part of piston, gradually subtracts toward piston middle part 8a two ends diameter
It is small；8a two ends are connected with the 8b of pistons end I and the 8c of pistons end II respectively in the middle part of piston, and it is 70 ° that junction, which forms angle α,；Piston
The 8b of end I is connected with piston shaft 1；
Piston 8 is placed in inside cylinder 9, and the internal diameter of cylinder 9 is to be provided with a 2.65 × 2.65mm in the middle part of 8a in the middle part of 16mm, piston
Annular groove 4, provided with the O-ring seals 7 that specification is 15 × 2.65 in annular groove 4, the overcoat of O-ring seals 7 loads onto piston
Ring 6, piston ring 6 is contacted with the inwall of cylinder 9, and magnetic liquid lubrication agent 3 forms lubricant between piston ring 6 and the inwall of cylinder 9
Liquid film；Gap 2 is formed in the middle part of piston between 8a two ends and the inwall of cylinder 9；In the 8b of the pistons end I and 8c of pistons end II and cylinder 9
The gap of wall is less than 0.143mm；Magnetic liquid lubrication agent 3 is 20mL models EFH1 Oil-based magnetic liquid, its saturated magnetization
Intensity is 11kA/m；
Annular magnet 5 is neodymium iron boron annular permanent magnet, and rectangular cross-section, magnetic blow out centre regional magnetic field intensity is more than 1.5kA/
M, is placed in the outside of cylinder 9 and is combined closely with its outer surface, annular magnet 5 is located at the midpoint of the back and forth movement of piston 8, the row of piston 8
Journey is 30mm, and piston 8 remains that the 8b of pistons end I and the 8c of pistons end II are respectively at annular magnet 5 in motion process
The both sides of correspondence position；The magnetizing direction of annular magnet 5 is radially.
Embodiment 2
With reference to the structure of embodiment 1, the present embodiment is with the difference of embodiment 1, and the section of annular magnet 5 is 120 ° of drift angle
Isosceles triangle, magnetic field intensity is more than both sides in the middle part of magnet, the drop of magnetic liquid lubrication agent 3 being scattered caught by magnet after from two
Side is adsorbed to center, as shown in Figure 4.
Embodiment 3
With reference to the structure of embodiment 1, the present embodiment is with the difference of embodiment 1, in the middle part of piston the 8a and 8b of pistons end I and
The angle α of the 8c junctions of pistons end II is 45 °, and the 8b of pistons end I and the 8c of pistons end II protrude to form point close to the side of gap 2
Angle, as shown in figure 5, the leakage of lubricant can more effectively be prevented by reducing angle [alpha].
Embodiment 4
With reference to the structure of embodiment 1, the present embodiment is with the difference of embodiment 1, and three rings are provided with the middle of 8a in the middle part of piston
O-ring seals 7 and piston ring 6 are equipped with connected in star 4, each annular groove 4, as shown in Figure 6.This structure is more beneficial for moistening
Lubrication prescription is limited near piston ring 6, and can further improve device bearing capacity and operation stability.
Embodiment 5
With reference to the structure of embodiment 1, the present embodiment is with the difference of embodiment 1, and piston is implemented by multiple in the present embodiment
Piston 8 described in example 1 is constituted, each piston 8 one annular magnet 5 of correspondence, forms multistage lubrication and seal as shown in Figure 7
Structure, can meet that piston stroke is longer, and seal pressure is higher, the condition of work high to piston movement stability requirement.
Embodiment 6
With reference to the structure of embodiment 1, the present embodiment is that annular magnet 5 uses polylith with the difference of embodiment 1（Even number）N、
S grades of opposite sector electromagnet alternative splicings are formed, as shown in figure 8, this magnet arrangement can be produced on the internal face of cylinder 9 it is higher
The magnetic field of gradient, the magnetic volume power suffered by increase magnetic liquid.
Claims (8)
1. a kind of reciprocating magnetic liquid self-circulation lubricating sealing device, including piston shaft（1）, magnetic liquid lubrication agent（3）, ring
Shape magnet（5）, piston（8）And cylinder（9）；
Piston（8）Including in the middle part of piston（8a）, pistons end I（8b）With pistons end II（8c）；In the middle part of piston（8a）For spindle
Shape, interlude diameter is maximum and cylindrical, toward piston middle part（8a）Two ends diameter is gradually reduced；In the middle part of piston（8a）Two ends point
Not with pistons end I（8b）With pistons end II（8c）Connection, junction forms angle α；Pistons end I（8b）With piston shaft（1）
Connection；
Piston（8）It is placed in cylinder（9）In the middle part of inside, piston（8a）Middle part is provided with least one annular groove（4）, annular groove
（4）It is interior to be provided with O-ring seals（7）, O-ring seals（7）Overcoat ring plugging（6）, piston ring（6）With cylinder（9）Inwall connects
Touch, magnetic liquid lubrication agent（3）In piston ring（6）With cylinder（9）Lubricant liquid film is formed between inwall；In the middle part of piston（8a）Two
End and cylinder（9）Gap is formed between inwall（2）；
Annular magnet（5）It is placed in cylinder（9）Outside is simultaneously combined closely with its outer surface, annular magnet（5）Positioned at piston（8）Come and go
The midpoint of motion, piston（8）Pistons end I is remained in motion process（8b）With pistons end II（8c）It is respectively at ring
Shape magnet（5）The both sides of correspondence position.
2. device according to claim 1, it is characterised in that in the middle part of piston（8a）Cylindrical interlude is accounted in piston
Portion（8a）The ratio of overall length is more than 25%, less than 100%.
3. device according to claim 1, it is characterised in that in the middle part of piston（8a）Two ends respectively with pistons end I（8b）
With pistons end II（8c）90 ° of the angle α ＜ that junction is formed.
4. device according to claim 1, it is characterised in that pistons end I（8b）With pistons end II（8c）With cylinder
（9）Inwall is smaller than 0.143mm.
5. device according to claim 1, it is characterised in that annular magnet（5）Magnetizing direction radially, its center
Domain magnetic field intensity is more than 1.5kA/m.
6. device according to claim 1, it is characterised in that annular magnet（5）Quantity be more than one.
7. device according to claim 1, it is characterised in that annular magnet（5）For permanent magnet.
8. device according to claim 1, it is characterised in that annular magnet（5）For an entirety, or by polylith group of magnets
Into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720019315.XU CN206513836U (en) | 2017-01-09 | 2017-01-09 | A kind of reciprocating magnetic liquid self-circulation lubricating sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720019315.XU CN206513836U (en) | 2017-01-09 | 2017-01-09 | A kind of reciprocating magnetic liquid self-circulation lubricating sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206513836U true CN206513836U (en) | 2017-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720019315.XU Expired - Fee Related CN206513836U (en) | 2017-01-09 | 2017-01-09 | A kind of reciprocating magnetic liquid self-circulation lubricating sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206513836U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499824A (en) * | 2017-01-09 | 2017-03-15 | 昆明理工大学 | A kind of reciprocating magnetic liquid self-circulation lubricating sealing device |
-
2017
- 2017-01-09 CN CN201720019315.XU patent/CN206513836U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499824A (en) * | 2017-01-09 | 2017-03-15 | 昆明理工大学 | A kind of reciprocating magnetic liquid self-circulation lubricating sealing device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170922 Termination date: 20190109 |
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| CF01 | Termination of patent right due to non-payment of annual fee |