CN105268596B - A kind of hole sealing device and workpiece hole-sealing technology - Google Patents
A kind of hole sealing device and workpiece hole-sealing technology Download PDFInfo
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- CN105268596B CN105268596B CN201510761026.2A CN201510761026A CN105268596B CN 105268596 B CN105268596 B CN 105268596B CN 201510761026 A CN201510761026 A CN 201510761026A CN 105268596 B CN105268596 B CN 105268596B
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Abstract
The invention discloses a kind of hole sealing device and workpiece hole-sealing technology, the hole sealing device includes sealing of hole tank, the first vavuum pump being tightly connected by pipeline and sealing of hole tank, the second vavuum pump on the pipeline between sealing of hole tank and the first vavuum pump and the filter for preventing hole sealing agent from entering in the first vavuum pump and the second vavuum pump；The entrance point and the port of export of filter are both connected on the pipeline between sealing of hole tank and first, second vavuum pump, and closed-loop path is formed between the pipe-and-filter；The high vacuum butterfly valve for connecting and disconnecting with sealing of hole tank for controlling filter is also equipped with pipeline between the entrance point of filter and the port of export.The hole sealing device combines unit by using two kinds of vavuum pumps and vacuumized twice, and the air in sealing of hole tank is at utmost drained only, greatly improves the sealing effectiveness of workpiece sealing of hole, reduces porosity.
Description
Technical field
The present invention relates to workpiece hole sealing technology field, more specifically to a kind of hole sealing device and workpiece hole-sealing technology.
Background technology
In the prior art, the general completion in sealing of hole tank of technique for workpiece being carried out by sealing of hole using resin, before sealing of hole,
The air in sealing of hole tank is extracted out first with mechanical pump, resin is reinjected and sealing of hole is carried out to workpiece.
But it is due to that mechanical pump can not thoroughly drain the air in sealing of hole tank only, sealing of hole tank and workpiece hole are also remained
A certain amount of air and air pressure, cause liquid resin to fully penetrate into workpiece, and when carrying out sealing of hole to workpiece, effect is not very
Ideal, some workpiece sealing of hole imprecisions.Further, since mechanical pump is directly connected with sealing of hole tank by pipeline, carrying out second
During vacuum pumping, the resin in sealing of hole tank, due to the change of pressure, easily gasification, and enter along pipeline in mechanical pump, so
Solidify afterwards in mechanical pump, so as to damage mechanical pump performance, influence the effect and service life vacuumized.
The content of the invention
For the drawbacks described above of prior art, the technical problem to be solved in the present invention be there is provided a kind of hole sealing device and
The technique that workpiece sealing of hole is carried out using the hole sealing device, the hole sealing device is vacuumized twice by using two groups of vavuum pumps,
Air in sealing of hole tank is thoroughly drained only, the sealing effectiveness of workpiece sealing of hole is greatly improved；In addition, in mechanical pump and sealing of hole tank
Filter is installed on the pipeline of connection so that during third time is vacuumized, the resin of gasification is flowed into airflow direction
In filter, and it is trapped in filter, so as to effectively prevent resin gasification from entering mechanical pump and damaging mechanical pump
Performance.
The technical solution adopted for the present invention to solve the technical problems is：A kind of hole sealing device is provided, including it is sealing of hole tank, logical
Second on the first vavuum pump that piping and sealing of hole tank are tightly connected, the pipeline between sealing of hole tank and the first vavuum pump
Vavuum pump and the filter for preventing hole sealing agent from entering in the first vavuum pump and the second vavuum pump；The import of the filter
End and the port of export are both connected on the pipeline between sealing of hole tank and the second vavuum pump, and closure is formed between the pipe-and-filter
Loop；It is also equipped with connecting with sealing of hole tank for controlling filter on pipeline between the entrance point of the filter and the port of export
With the high vacuum butterfly valve of disconnection.
Hole sealing device of the present invention, wherein, the hole sealing device also includes being used to control the first vavuum pump and sealing of hole tank
Connection and the first suction filtration valve disconnected, the second suction filtration valve for connecting and disconnecting with sealing of hole tank for the second vavuum pump of control and use
In the main valve for protecting the first vavuum pump and the second vavuum pump.
Hole sealing device of the present invention, wherein, the filter includes hollow vessel, hollow upper lid, hollow lower cover, the
One support chip, the second support chip, filtration core and several connecting poles；First support chip and the second support chip are separately positioned on
Upper and lower ends in hollow vessel, first support chip, the second support chip and hollow vessel enclose filter jointly
Filtration zone；Multiple through holes are offered on first support chip and the second support chip；Described connecting pole one end is connected to
On one support chip, the other end of connecting pole is connected on the second support chip, and the filtration core is wrapped in the first support chip and second
On connecting pole between support chip；The hollow upper lid is sealedly connected on the top of hollow vessel, and the hollow lower cover sealing connects
It is connected on the bottom of hollow vessel.
Hole sealing device of the present invention, wherein, second support chip is fixedly connected on the lower end in hollow vessel, institute
State connecting pole to be vertically fixed on the second support chip, position corresponding with the connecting pole, which is offered, on first support chip passes through
Perforation, first support chip is set on connecting pole and movable along connecting pole axial direction.
Hole sealing device of the present invention, wherein, the hollow upper lid is fixedly connected with hollow vessel by flange, described
Flange includes upper flange and lower flange, and the annular groove for placing flange gasket is provided with lower flange, the upper flange
Bore is less than the bore of lower flange.
Hole sealing device of the present invention, wherein, the filtration core is wire.
Hole sealing device of the present invention, wherein, the sealing of hole tank is also connected with for hole sealing agent to be delivered into sealing of hole tank
Conveyance conduit.
Hole sealing device of the present invention, wherein, first vavuum pump is mechanical pump, and second vavuum pump is Roots
Pump.
The present invention also provides a kind of workpiece hole-sealing technology based on above-mentioned hole sealing device, comprises the following steps：
(1) workpiece is placed in sealing of hole tank；
(2) start the first vavuum pump slightly to vacuumize sealing of hole tank, the pressure in control sealing of hole tank is less than 1000Pa；
(3) start the second vavuum pump to vacuumize sealing of hole tank progress essence, control the pressure of sealing of hole tank in 0.1-30Pa, and
Kept for more than 30 minutes；
(4) close main valve, close the second vavuum pump, after turn off the first vavuum pump, stop vacuumizing；
(5) toward injection liquid resin glue in sealing of hole tank, after liquid resin glue covers all workpiece, injection liquid tree is stopped
Fat glue；
(6) main valve is opened, closing conversion high vacuum butterfly valve makes sealing of hole tank be connected with filter, while starting the first vavuum pump
Sealing of hole tank is vacuumized, the pressure of control sealing of hole tank is less than 200Pa, and is kept for more than 30 minutes, you can complete workpiece
Sealing of hole.
Implement the hole sealing device and workpiece hole-sealing technology of the present invention, have the advantages that：
(1) hole sealing device is vacuumized twice by using two groups of vavuum pumps, by the air maximum journey in sealing of hole tank
Degree is drained only, greatly improves the sealing effectiveness of workpiece sealing of hole, reduces porosity；
(2) in addition, installing filter on the second vavuum pump and the tank connected pipeline of sealing of hole so that take out true in third time
In empty process, the resin of gasification is trapped in filter with airflow direction inflow filter, so as to effectively prevent
Only resin gasification enters mechanical pump and damages the performance of mechanical pump；
(3) filtration core in filter of the invention uses wire, because filtration core is metal material, makes gasification
Resin preferably solidifies in filter, reduces the amount entered in mechanical pump；In addition, using the filtration core of metal material, no
It can only stop that gasification resin enters mechanical pump to a certain degree, and not influence the effect that vacuumizes again.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation of the hole sealing device of present pre-ferred embodiments；
Fig. 2 is the structural representation of the filter in the hole sealing device of present pre-ferred embodiments；
Fig. 3 be present pre-ferred embodiments filter in the first support chip structural representation；
Fig. 4 be present pre-ferred embodiments filter in flange structural representation；
Fig. 5 is the air flow direction figure vacuumized for the first time in the hole-sealing technology of present pre-ferred embodiments；
Fig. 6 is the air flow direction figure vacuumized for the second time in the hole-sealing technology of present pre-ferred embodiments；
Fig. 7 is the air flow direction figure vacuumized for the third time in the hole-sealing technology of present pre-ferred embodiments；
Wherein, 1, sealing of hole tank；11st, conveyance conduit；2nd, the first vavuum pump；3rd, the second vavuum pump；4th, filter；41st, it is hollow
Tank body；42nd, hollow upper lid；43rd, hollow lower cover；44th, the first support chip；45th, the second support chip；46th, connecting pole；47th, through hole；
48th, through hole；49th, flange；491st, upper flange；492nd, lower flange；5th, the first suction filtration valve；6th, the second suction filtration valve；7th, main valve；8th, it is high
Vacuum butterfly valve.
Embodiment
Below, with reference to accompanying drawing and embodiment, the present invention is described further：
It is the structural representation of the hole sealing device of present pre-ferred embodiments as shown in Figure 1, the hole sealing device includes sealing of hole
Tank 1, the first vavuum pump 2 being tightly connected by pipeline and sealing of hole tank 1, between the vavuum pump 2 of sealing of hole tank 1 and first
The second vavuum pump 3 on pipeline and the filter 4 for preventing hole sealing agent from entering in the first vavuum pump 2 and the second vavuum pump 3；
The entrance point and the port of export of the filter 4 are both connected on the pipeline between the vavuum pump 3 of sealing of hole tank 1 and second, in the pipeline
Closed-loop path is formed between filter 4.Wherein, first vavuum pump 2 is mechanical pump, and second vavuum pump 3 is Roots
Pump.
The hole sealing device, which also includes being arranged on pipeline between the first vavuum pump 2 and the second vavuum pump 3, is used to controlling the
The first suction filtration valve 5 that one vavuum pump 2 is connected and disconnected with sealing of hole tank 1, the pipe between the second vavuum pump 3 and filter 4
It is used to control the second vavuum pump 3 the second suction filtration valve 6 for connecting and disconnect with sealing of hole tank 1 and installed in sealing of hole tank 1 and mistake on road
It is used for main valve 7 and the import installed in filter 4 for protecting the first vavuum pump 2 and the second vavuum pump 3 between filter 4 on pipeline
Hold the high vacuum butterfly valve with being also equipped with connecting and disconnecting with sealing of hole tank 1 for controlling filter 4 in the pipeline between the port of export
8.The sealing of hole tank 1 is also connected with the conveyance conduit 11 for hole sealing agent to be delivered to sealing of hole tank 1.
Wherein, as in Figure 2-4 for present pre-ferred embodiments hole sealing device and the structural representation of part, institute
Stating filter 4 includes hollow vessel 41, hollow upper lid 42, hollow lower cover 43, the first support chip 44, the second support chip 45, filtering
Core (not shown) and several connecting poles 46；The support chip 45 of first support chip 44 and second is separately positioned on hollow vessel
Upper and lower ends in 41, first support chip 44, the second support chip 45 and hollow vessel 41 enclose filter jointly
Filtration zone；Multiple through holes 47 are offered on the support chip 45 of first support chip 44 and second；Described one end of connecting pole 46
It is connected on the first support chip 44, the other end of connecting pole 46 is connected on the second support chip 45, the filtration core is wrapped in
On connecting pole 46 between one support chip 44 and the second support chip 45；The hollow upper lid 42 is sealedly connected on hollow vessel 41
Top, the hollow lower cover 43 is sealedly connected on the bottom of hollow vessel 41.The hollow upper lid 42 and hollow lower cover 43 are set
The cushion space of air-flow can be increased by putting, and advantageously collected and spread in air-flow, and further optimization balance is filtered and vacuumized
Effect.
Specifically, the lower end that second support chip 45 is fixedly connected by welding in hollow vessel 41, the connection
Post 46 is vertically welded on the second support chip 45, is opened up on first support chip 44 with the corresponding position of the connecting pole 46
There is through hole 48, first support chip 44 is set on connecting pole 46 and movable along the axial direction of connecting pole 46.When filter 4
When not working, the first support chip 44 is pressed on filtration core, when filter 4 works, and the resin of taking offence of zone of pressure is under hollow
Lid 43 enters, and the resin of gasification passes through filtration core, and solidifies on filtration core, under the influence of air pressure, the edge of the first support chip 44
Connecting pole 46 and moved up and down between filtration core and upper flange 491.
Wherein, the hollow upper lid 42 is fixedly connected with hollow vessel 41 by flange 49, and the flange 49 includes upper method
Orchid 491 and lower flange 492, are provided with the annular groove for placing flange gasket on lower flange 492, and the flange gasket is used to seal
Upper flange 491 and lower flange 492 to be tightly connected hollow upper lid 42 and hollow vessel 41, wherein, the bore of the upper flange 491
Less than the bore of lower flange 492, wherein, the purpose of the setting is the scope of activities for limiting the first support chip 44, prevent due to
When air pressure is excessive, air pressure ejects the first support chip 44 outside hollow vessel 41.
Preferably, the filtration core uses wire, such as aluminum metal, copper metal, ferrous metal, it is preferable that the material
For a diameter of 0.1-0.3 millimeters, machined flattening, then a kind of helical form or the metal of network structure being wound
Silk.Because filtration core is metal material, the resin of gasification is preferably solidified in filter, reduce and enter in mechanical pump
Amount, in order to ensure filter effect, periodic replacement wire can be carried out.In addition, using the filtration core of metal material, not only necessarily
Degree can stop that gasification resin enters mechanical pump, and not influence the effect that vacuumizes again.It is worth noting that, the mistake of the present invention
Filter core should not use filter cloth, although the filter effect of filter cloth can be more preferable, but because filter cloth adds air flow resistance,
The effect of vacuum filtration can be reduced.Experiment proves that, filtration core uses cloth or other materials, during use, easily blocks, its
The vacuum pressure value of filter is 300-400Pa, and the bigger explanation Suction filtration device of the vacuum pressure value is easier to be blocked.And use
The wire filter core of the present invention, the vacuum pressure value of filter is 10-15Pa, it can be seen that, the vacuum of wire filter core
Pressure value is small more than using cloth or its vacuum pressure value of other materials filter core, illustrates the filter core of the present invention and can take into account the need of filtering
Ask, the purpose of gas circulation can be taken into account again.The vacuum pressure value is the vacuum pressure that filter is determined when being vacuumized
Force value, if being not added with filter, vacuum values can reach 200Pa by suction filtration, if having added the filter of cloth material, very
Null value can be up to 300-400Pa, and vacuum pressure value is too high, does not reach technological requirement.It can be seen that, using the wire conduct of the present invention
Filtration core, the resin of precipitation gasification can not only be retained well, and ensure that air-flow can be in gap between wire
Pass through, so as to ensure the effect vacuumized.
Preferably, the filtration zone of hollow vessel 41 accounts for the 1/2 of filter, and hollow upper lid 42 and hollow lower cover 43 are respectively accounted for
1/4, wherein, hollow upper lid 42 and hollow lower cover 43 are respectively provided with camber structure, and the body of hollow upper lid 42 and hollow lower cover 43
Product is equal with the volume of filtration zone.The purpose set using arc is to make the cushion space of increase air-flow, is pumped through from sealing of hole tank 1
It is process of the high flow rate to low flow velocity, (pipeline section is small, mistake when the air-flow come is 4 from connecting pipe to filter
Filter section is big), due to the change of pressure, gasification resin has a liquefied process；The air-flow in hollow lower cover 43 here
The air-flow of a rotation is formed, centrifugal force is produced, gasification or liquefaction (semi-liquefied) resin are thrown on four perisporiums, make it more preferable
Liquefaction, the resin for the shape that liquefies flows to the slag-drip opening of lower section along four perisporiums.Simultaneously because the effect of air-flow, residue gasification state tree
Fat also can be evenly distribution, by filter core, in the link, curing reaction is produced with filter core, so as to further enhance filtering effect
Really.Wherein, offered on the hollow lower cover 43 and offer discharging opening on charging aperture and slag-drip opening, the hollow upper lid 42.
The slag-drip opening is used to remove the impurity after filtering.
The present invention also provides a kind of workpiece hole-sealing technology based on above-mentioned hole sealing device, comprises the following steps：
(1) workpiece is placed in sealing of hole tank 1；
(2) start the first vavuum pump 2 slightly to vacuumize sealing of hole tank 1, while opening the first suction filtration valve 5, high vacuum butterfly
Pressure in valve 8, main valve 7, control sealing of hole tank 1 is less than 1000Pa, as shown in Figure 5；
(3) start the second vavuum pump 3 to carry out essence to sealing of hole tank 1 and vacuumize, while opening the second suction filtration valve 6 and closing first
Suction filtration valve 5, the pressure of control sealing of hole tank 1 is kept for more than 30 minutes in 0.1-30Pa；Make the air quilt completely in sealing of hole tank 1
Take away, be that the injection liquid resin of sealing of hole tank 1 is more fine and close into workpiece, reduce the space that bubble is produced, as shown in Figure 6；
(4) main valve 7 is closed, the second vavuum pump 3 is closed and the second suction filtration valve 6 stops vacuumizing, while opening the first suction filtration
Valve 5, turns off the first vavuum pump 2 and the first suction filtration valve 5；Open Here is set to be to protect with closing the order purpose of each valve
Protect the second vavuum pump；
(5) toward injection liquid resin glue in sealing of hole tank 1, after liquid resin glue covers all workpiece, injection liquid is stopped
Resin glue；
(6) the first suction filtration valve 5 and main valve 7 are opened, closing high vacuum butterfly valve 8 makes sealing of hole tank 1 be connected with filter 4, simultaneously
Start the first vavuum pump 2 to vacuumize sealing of hole tank 1, the pressure of control sealing of hole tank 1 is less than 200Pa, and keep 30 minutes with
On, you can the sealing of hole of workpiece is completed, as shown in Figure 7.
Implement the workpiece hole-sealing technology of the present invention, by adding the second vavuum pump so that sealing of hole tank is vacuumized more thorough
Bottom.Concrete operations are first to be evacuated down to below 1000Pa to sealing of hole tank with mechanical pump, be then turned on the second vavuum pump, make sealing of hole tank
Interior air pressure reaches 0.1-30Pa, and is kept for more than 30 minutes.Make workpiece sealing of hole more accurate by this technique sealing of hole, reduce hole
Rate.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection domain of the claims in the present invention
Within.
Claims (7)
1. a kind of hole sealing device, it is characterised in that the first vacuum being tightly connected including sealing of hole tank, by pipeline and sealing of hole tank
Pump, the second vavuum pump on the pipeline between sealing of hole tank and the first vavuum pump and for preventing hole sealing agent from entering first
Filter in vavuum pump and the second vavuum pump；The entrance point of the filter and the port of export are both connected to sealing of hole tank and second true
On pipeline between empty pump, closed-loop path is formed between the pipe-and-filter；The entrance point and the port of export of the filter
Between pipeline on be also equipped with the high vacuum butterfly valve that connects and disconnect with sealing of hole tank for controlling filter;
The filter include hollow vessel, hollow upper lid, hollow lower cover, the first support chip, the second support chip, filtration core and
Several connecting poles；First support chip and the second support chip are separately positioned on the upper and lower ends in hollow vessel, described first
Support chip, the second support chip and hollow vessel enclose the filtration zone of filter jointly；First support chip and second
Multiple through holes are offered on support chip；Described connecting pole one end is connected on the first support chip, the other end connection of connecting pole
On the second support chip, the filtration core is wrapped on the connecting pole between the first support chip and the second support chip；It is described hollow
Upper to cover the top for being sealedly connected on hollow vessel, the hollow lower cover is sealedly connected on the bottom of hollow vessel;
Second support chip is fixedly connected on the lower end in hollow vessel, and the connecting pole is vertically fixed on the second support chip
On, position corresponding with the connecting pole offers through hole on first support chip, and first support chip is set in company
Connect on post and movable along connecting pole axial direction.
2. hole sealing device according to claim 1, it is characterised in that the hole sealing device also includes being used to control the first vacuum
The first suction filtration valve that pump is connected and disconnected with sealing of hole tank, second for controlling the second vavuum pump to connect and disconnect with sealing of hole tank are taken out
Trap valve and the main valve for protecting the first vavuum pump and the second vavuum pump.
3. hole sealing device according to claim 1, it is characterised in that the hollow upper lid and hollow vessel are solid by flange
Fixed connection, the flange includes upper flange and lower flange, the annular groove for placing flange gasket, institute is provided with lower flange
The bore for stating upper flange is less than the bore of lower flange.
4. the hole sealing device according to claim any one of 1-3, it is characterised in that the filtration core is wire.
5. the hole sealing device according to claim any one of 1-3, it is characterised in that the sealing of hole tank is also connected with being used to seal
Hole agent is delivered to the conveyance conduit of sealing of hole tank.
6. the hole sealing device according to claim any one of 1-3, it is characterised in that first vavuum pump is mechanical pump,
Second vavuum pump is lobe pump.
7. a kind of workpiece hole-sealing technology of the hole sealing device based on described in claim 2, it is characterised in that comprise the following steps：
（1）Workpiece is placed in sealing of hole tank；
（2）Start the first vavuum pump slightly to vacuumize sealing of hole tank, the pressure in control sealing of hole tank is less than 1000Pa；
（3）Start the second vavuum pump to vacuumize sealing of hole tank progress essence, control the pressure of sealing of hole tank in 0.1-30Pa, and keep 30
More than minute；
（4）Close main valve after, close the second vavuum pump, after turn off the first vavuum pump, stop vacuumizing；
（5）Injection liquid resin glue in toward sealing of hole tank, after liquid resin glue covers all workpiece, stops injection liquid resin
Glue；
（6）Main valve is opened, closing conversion high vacuum butterfly valve makes sealing of hole tank be connected with filter, while starting the first vavuum pump to envelope
Hole tank is vacuumized, and the pressure of control sealing of hole tank is less than 200Pa, and is kept for more than 30 minutes, you can complete the sealing of hole of workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510761026.2A CN105268596B (en) | 2015-11-09 | 2015-11-09 | A kind of hole sealing device and workpiece hole-sealing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510761026.2A CN105268596B (en) | 2015-11-09 | 2015-11-09 | A kind of hole sealing device and workpiece hole-sealing technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105268596A CN105268596A (en) | 2016-01-27 |
| CN105268596B true CN105268596B (en) | 2017-10-24 |
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| CN201510761026.2A Active CN105268596B (en) | 2015-11-09 | 2015-11-09 | A kind of hole sealing device and workpiece hole-sealing technology |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112275519B (en) * | 2020-12-02 | 2021-07-20 | 苏州热工研究院有限公司 | Vacuum hole sealing equipment and hole sealing method suitable for thermal spraying coating |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2255873Y (en) * | 1996-04-05 | 1997-06-11 | 营口高中压阀门总厂 | High precisive quick-action oxygen filter |
| CN101285868B (en) * | 2008-06-11 | 2010-11-17 | 重庆大学 | Differential pressure type multifunctional vacuum oil immersion equipment |
| CN102806176A (en) * | 2011-06-02 | 2012-12-05 | 张家港市佳龙真空浸漆设备制造厂 | Vacuum pressure lacquer-dipping cluster device |
| CN204591673U (en) * | 2015-04-08 | 2015-08-26 | 兰州真空设备有限责任公司 | The special unit of finding time of low-temperature powder insulated storage tank |
| CN205146586U (en) * | 2015-11-09 | 2016-04-13 | 中山市新泰兴粉末冶金有限公司 | Hole sealing device |
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