CN106321789A - Negative pressure sealing device for confined space - Google Patents
Negative pressure sealing device for confined space Download PDFInfo
- Publication number
- CN106321789A CN106321789A CN201610777527.4A CN201610777527A CN106321789A CN 106321789 A CN106321789 A CN 106321789A CN 201610777527 A CN201610777527 A CN 201610777527A CN 106321789 A CN106321789 A CN 106321789A
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- CN
- China
- Prior art keywords
- confined space
- negative pressure
- rod
- sealing device
- bleeding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention provides a negative pressure sealing device for a confined space. The negative pressure sealing device comprises the confined space. An opening communicating with the confined space is formed in the box wall of the confined space; the sealing device is arranged at the opening and comprises a pipe connector connected with the portion, located at the opening, of the box wall; an air extracting sealing screw for extracting air from the confined space is arranged in the pipe connector; the top of the air extracting sealing screw is connected with a fastening nut in a threaded mode; and the fastening nut is screwed to enable the air extracting sealing screw to extend out of the confined space in the axial direction of the pipe connector. The negative pressure sealing device for the confined space can extract the air in the confined space so as to enable the pressure in the confined space to be smaller than the outer atmospheric pressure. The negative pressure sealing device can be applied to a decelerator, and when the decelerator operates, the expansion of hot air enables the air pressure in the decelerator to be still smaller than the outer atmospheric pressure, so that gear oil is no longer pressed outward.
Description
Technical field
The present invention relates to a kind of be used in the reductor of sealing, airtight machinery, deep-sea, deep space device for preventing leakage,
The negative pressure sealing device for housing of confined space such as pack.
Background technology
It is that faying face at casing has stamped fluid sealant when reductor has assembled that traditional reductor seals, and notes the most again
Entering gear oil, generate heat owing to high-speed gear rotates during reductor operates, in the reductor of sealing, gas will be swollen
Swollen so that the air pressure in reductor is more than extraneous atmospheric pressure, and produces gear oil and easily leak.
Summary of the invention
The technical problem to be solved in the present invention is to provide and a kind of extracts the air in confined space, makes confined space
Interior pressure is less than a kind of sealing device of ambient pressure.
It is an object of the invention to realize in the following manner:
The negative pressure sealing device for housing of confined space, including confined space 6, the tank wall of confined space 6 is arranged and communicates with confined space 6
Opening, opening part is provided with sealing device, and described sealing device includes the pipe joint 4 being connected on opening part tank wall, and pipe connects
Being provided with the air extracting seal screw rod 3 bled in confined space 6 in 4, airtight screw rod 3 screw top of bleeding connects fastening
Nut 1, is stretched out along the axis direction of pipe joint 4 by the turn clamp nut 1 airtight screw rod 3 that makes to bleed in confined space 6.
Described air extracting seal screw rod 3 includes the upper and lower being wholely set, and top is be arranged in pipe joint 4 shaft-like
Screw rod, rod-shaped screw tip male thread connects clamp nut 1, and rod-shaped screw is internal is bleed-off passage, arranges bottom bleed-off passage
The pore being in communication with the outside, rod-shaped screw bottom is gasket seal, and rod-shaped screw moves down along pipe joint 4 axis, makes sealing
Pad separates bottom pipe joint 4, and pore communicates with confined space 6；Or rod-shaped screw moves up along pipe joint 4 axis,
Make gasket seal contact with pipe joint 4 sealed bottom, disconnect pore and confined space 6 passage.
Between described sealing screw rod and pipe joint, sealing ring 7 is set.
Having space between described pipe joint 4 and rod-shaped screw, be provided with spring 5 in space, the bottom of spring 5 is pressed on
On pipe joint 4, the top of spring 5 is pressed on the shaft block ring of rod-shaped screw.
Connect on described clamp nut 1 to have and the air in confined space is carried out Automatic-bleeding and confined space is carried out certainly
The negative pressure clamp device of movable sealing.
Described negative pressure clamp device includes push rod 13 of bleeding, and it is downward that the top of push rod 13 of bleeding arranges promotion push rod 13 of bleeding
With the thrust device 12 moved upward, the rotary apparatus that the external connection of push rod 13 bottom of bleeding rotates around push rod 13 of bleeding, rotation
Rotary device bottom is arranged and the wrench socket 17 of clamp nut 1 socket.
Described thrust device 12 includes pushing-type electric magnet, and push rod 13 of bleeding is through pushing-type electric magnet；Described thrust device 12
Including thrust electric magnet, push rod 13 of bleeding is connected as a single entity with pushing-type electric magnet.
Described rotary apparatus includes the hollow axle passed for push rod 13 of bleeding, and hollow axle bottom connects wrench socket 17, empty
Mandrel cylindrical connects rotor 15, rotor 15 external connection motor stator 14.
Connect on described thrust device and rotary apparatus and have handrail controller 16.
Relative to prior art, the air in confined space can be extracted out, make the air pressure in confined space little by the present invention
In external atmosphere pressure.When being applied in reductor, when reductor runs, heating gas expansion makes the air pressure in reductor the least
Gear oil is extruded the most outward in external atmosphere pressure.
Accompanying drawing explanation
Fig. 1 is negative pressure sealing device for housing schematic diagram.
Fig. 2 is the state diagram of bleeding of Fig. 1.
Fig. 3 is negative pressure clamp device structure chart.
Fig. 4 is that Fig. 3 is carried out bleeding the schematic diagram of work.
Wherein, 1 is clamp nut, and 2 is seal washer, and 3 is air extracting seal screw rod, and 4 is pipe joint, and 5 is spring I, and 6 is close
Closing space, 7 is sealing ring, and 11 is pipe joint, and 12 is pushing-type electric magnet, and 13 is push rod of bleeding, and 14 is motor stator, and 15 is motor
Rotor, 16 is handrail controller, and 17 is wrench socket, and 18 is spring II.
Detailed description of the invention
The present invention provides the negative pressure sealing device for housing of a kind of confined space, for being extracted out by the air in confined space, makes close
Close the atmospheric pressure in space and be less than extraneous air pressure, when the air in confined space is heated, still can make inside
The atmospheric pressure of heated air be not more than extraneous air pressure.
The negative pressure sealing device for housing of the confined space of the present invention, is a kind of negative pressure sealing device for housing automatically, is bled by connection
Pump, carries out Automatic-bleeding and generates negative pressure.Pressure size can be controlled by electro connecting pressure gauge, when reaching certain negative pressure, automatically disconnect
And fit sealing.The negative pressure sealing device for housing of the present invention includes confined space 6, and confined space 6 arranges opening, and opening part arranges close
Seal apparatus.Sealing device includes that pipe joint 4, pipe joint 4 are fixedly connected on the tube wall of opening part, in order to increase the firm of connection
Property, the bottom of pipe joint 4 is provided with and the boss of confined space wall contacts, arranges close between boss and the outer wall of confined space
Seal washer II.
Arranging air extracting seal screw rod 3 in pipe joint 4, air extracting seal screw rod 3 top connects automatic gas extraction device, carries out automatically
Bleed.The inner hollow of air extracting seal screw rod 3, bleeds in confined space 6 for connecting the air extractor of outside.Bleed
Airtight screw rod 3 screw top connects clamp nut 1, makes, by turn clamp nut 1, the airtight screw rod 3 axle along pipe joint 4 of bleeding
Line direction is stretched out in confined space 6.
Air extracting seal screw rod 3 includes upper and lower, and top is the rod-shaped screw being arranged in pipe joint 4, rod-shaped screw
Inner hollow, rod-shaped screw screw top connects clamp nut 1, and rod-shaped screw is internal is bleed-off passage, sets bottom bleed-off passage
Putting the pore being in communication with the outside, rod-shaped screw bottom is gasket seal.
When electronic turn clamp nut 1, rod-shaped screw is made to move down when bleeding along pipe joint 4 axis, sealing gasket
Sheet separates bottom pipe joint 4, and the pore bottom bleed-off passage communicates with confined space 6, by the Automatic-bleeding of external connection
Device is bled；When having bled, the tight clamp nut of automatic rotary, rod-shaped screw moves up along pipe joint 4 axis, makes sealing
Pad contacts with pipe joint 4 sealed bottom, disconnects the passage of pore and confined space 6.
Wherein, in order to create the environment more sealed, seal and between screw rod and pipe joint, sealing ring 7 is set.
Having space between pipe joint 4 and rod-shaped screw, be provided with spring 5 in space, the bottom of spring 5 is fixed on pipe and connects
On 4, the top of spring I 5 is fixed on rod-shaped screw.When bleeding, turn clamp nut 1.After having bled, automatic turn is tight
Gu nut 1, with the help of spring I 5 elastic force, air extracting seal screw rod is upwards taken out of, return to the sealing state shown in Fig. 1.
Between above-mentioned air extractor and negative pressure sealing device for housing, negative pressure fastening all-in-one can be set, it is achieved negative pressure fastens
It is automatically brought into operation function.
Be connected the push rod 13 of bleeding carrying out bleeding with negative pressure-fastening all-in-one, and push rod 13 head tube joint 11 of bleeding connects
Air pump is bled, and the top of push rod 13 of bleeding arranges the thrust device 12 promoting push rod 13 of bleeding downwardly and upwardly to move, and takes out
The external connection of pneumatic jack bar 13 bottom is arranged and negative-pressure dense around the rotary apparatus of push rod 13 central rotation of bleeding, rotary apparatus bottom
The wrench socket 17 that the nut of seal apparatus matches.During use, wrench socket is socketed in sealing device and sealing device
On the clamp nut 1 that air exhaust rod is connected, by rotary apparatus, the clamp nut 1 being arranged on negative pressure sealing device for housing is screwed out, place
In state of can bleeding, then automatically promote push rod 13 of bleeding to move down by thrust device 12, sealing screw rod 3 is pushed down on
Open, get through air flue.
Pushing-type electric magnet selected by thrust device 12, and push rod 13 of bleeding can arrange through pushing-type electric magnet and also can be fixedly installed
In pushing-type electric magnet.
Being designed with spring II 18 outside the push rod 13 of bleeding of pushing-type electric magnet, one end of spring II 18 is connected to pushing-type electric magnet
On 12, the other end is connected to bleed on push rod 13.
Above-mentioned rotary apparatus includes the hollow axle that push rod 13 passes for bleeding, and hollow axle is arranged on the push rod 13 times of bleeding
Portion, hollow axle cylindrical connects rotor 15, rotor 15 external connection motor stator 14, drives sky by rotor 15
Central axis, hollow axle bottom connects wrench socket 17, and then drives the rotation of wrench socket 17, tight by negative pressure sealing device for housing
Gu nut fastens or opens.
Negative pressure-fastening all-in-one, upper end housing is connected with air extractor by pipe joint 11, negative pressure-fastening all-in-one,
Lower end housing is connected with pipe joint 4 by pipe joint screw thread, forms automatic gas extraction device, it is achieved Automatic-bleeding function.
The present invention is additionally provided with controller, and controller is arranged on all-in-one with the form of handrail controller 16, handrail control
Arrange two on device 16 processed and drive button and two pass buttons, the energising of push rod device that is respectively used to control to bleed, electric rotating machine
Energising, the closedown of push rod device of bleeding, the closedown of electric rotating machine, or by electro connecting pressure gauge and PLC, it is achieved control negative pressure-
Being automatically brought into operation of fastening all-in-one.
Above-described is only the preferred embodiment of the present invention, it is noted that for a person skilled in the art,
Without departing under general idea premise of the present invention, it is also possible to making some changes and improvements, these also should be considered as the present invention's
Protection domain.
Claims (9)
1. the negative pressure sealing device for housing of confined space, including confined space (6), the tank wall of confined space (6) is arranged and confined air
Between (6) opening of communicating, opening part is provided with sealing device, it is characterised in that: described sealing device includes being connected to opening part
Pipe joint (4) on tank wall, is provided with the air extracting seal screw rod (3) bled in confined space (6) in pipe joint (4),
Airtight screw rod (3) screw top of bleeding connects clamp nut (1), makes, by turn clamp nut (1), airtight screw rod (3) edge of bleeding
The axis direction of pipe joint (4) stretches out in confined space (6).
The negative pressure sealing device for housing of confined space the most according to claim 1, it is characterised in that: described air extracting seal screw rod
(3) including the upper and lower being wholely set, top is the rod-shaped screw being arranged in pipe joint (4), outside rod-shaped screw top
Threaded clamp nut (1), rod-shaped screw is internal is bleed-off passage, arranges the pore being in communication with the outside bottom bleed-off passage,
Rod-shaped screw bottom is gasket seal, and rod-shaped screw moves down along pipe joint (4) axis, makes gasket seal and pipe joint (4)
Separately, pore communicates with confined space (6) in bottom；Or rod-shaped screw moves up along pipe joint (4) axis, makes gasket seal
Contact with pipe joint (4) sealed bottom, disconnect the passage of pore and confined space (6).
The negative pressure sealing device for housing of confined space the most according to claim 2, it is characterised in that: described sealing screw rod connects with pipe
Sealing ring (7) is set between Tou.
The negative pressure sealing device for housing of confined space the most according to claim 2, it is characterised in that: described pipe joint (4) and bar
Having space between shape screw rod, be provided with spring (5) in space, the bottom of spring (5) is pressed on pipe joint (4), spring (5)
Top be pressed on the shaft block ring of rod-shaped screw.
The negative pressure sealing device for housing of confined space the most according to claim 1, it is characterised in that: on described clamp nut (1)
Connect to have and the air in confined space is carried out Automatic-bleeding and confined space is carried out self-sealing negative pressure clamp device.
The negative pressure sealing device for housing of confined space the most according to claim 5, it is characterised in that: described negative pressure clamp device bag
Including push rod of bleeding (13), the top of push rod of bleeding (13) arranges promotion and bleeds the thrust device that push rod (13) downwardly and upwardly moves
(12), the rotary apparatus that the external connection of push rod of bleeding (13) bottom rotates around push rod of bleeding (13), rotary apparatus bottom is arranged
The wrench socket (17) being socketed with clamp nut (1).
The negative pressure sealing device for housing of confined space the most according to claim 5, it is characterised in that: described thrust device (12) wraps
Including pushing-type electric magnet, push rod of bleeding (13) passes pushing-type electric magnet；Described thrust device (12) includes thrust electric magnet, top of bleeding
Bar (13) is connected as a single entity with pushing-type electric magnet.
The negative pressure sealing device for housing of confined space the most according to claim 5, it is characterised in that: described rotary apparatus includes supplying
The hollow axle that push rod (13) of bleeding passes, hollow axle bottom connects wrench socket (17), and hollow axle cylindrical connects rotor
(15), rotor (15) external connection motor stator (14).
The negative pressure sealing device for housing of confined space the most according to claim 5, it is characterised in that: described thrust device and rotation
Connect on device and have handrail controller (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610777527.4A CN106321789B (en) | 2016-08-31 | 2016-08-31 | The negative pressure sealing device for housing of confined space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610777527.4A CN106321789B (en) | 2016-08-31 | 2016-08-31 | The negative pressure sealing device for housing of confined space |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106321789A true CN106321789A (en) | 2017-01-11 |
| CN106321789B CN106321789B (en) | 2019-01-11 |
Family
ID=57789425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610777527.4A Active CN106321789B (en) | 2016-08-31 | 2016-08-31 | The negative pressure sealing device for housing of confined space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106321789B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026592A (en) * | 2018-09-05 | 2018-12-18 | 宁德职业技术学院 | A kind of air pump spanner all-in-one machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5123442A (en) * | 1991-04-30 | 1992-06-23 | Circle Seal Controls, Inc. | Regulating shut off valve |
| CN1799950A (en) * | 2005-01-09 | 2006-07-12 | 周琪凌 | Side wall type automatic negative pressure sealing jar |
| CN201815657U (en) * | 2010-08-19 | 2011-05-04 | 沈阳西子航空产业有限公司 | Fast vacuumizing connector device |
| CN203363188U (en) * | 2013-02-21 | 2013-12-25 | 中国科学院广州地球化学研究所 | Air pumping valve capable of preventing dust blockage |
| CN104743480A (en) * | 2015-02-09 | 2015-07-01 | 长沙今朝科技股份有限公司 | Integrated vacuum, air inflating and pressing device |
-
2016
- 2016-08-31 CN CN201610777527.4A patent/CN106321789B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5123442A (en) * | 1991-04-30 | 1992-06-23 | Circle Seal Controls, Inc. | Regulating shut off valve |
| CN1799950A (en) * | 2005-01-09 | 2006-07-12 | 周琪凌 | Side wall type automatic negative pressure sealing jar |
| CN201815657U (en) * | 2010-08-19 | 2011-05-04 | 沈阳西子航空产业有限公司 | Fast vacuumizing connector device |
| CN203363188U (en) * | 2013-02-21 | 2013-12-25 | 中国科学院广州地球化学研究所 | Air pumping valve capable of preventing dust blockage |
| CN104743480A (en) * | 2015-02-09 | 2015-07-01 | 长沙今朝科技股份有限公司 | Integrated vacuum, air inflating and pressing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026592A (en) * | 2018-09-05 | 2018-12-18 | 宁德职业技术学院 | A kind of air pump spanner all-in-one machine |
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| Publication number | Publication date |
|---|---|
| CN106321789B (en) | 2019-01-11 |
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