CN110005806A - Dustproof test box takes out pressure test interface connector - Google Patents
Dustproof test box takes out pressure test interface connector Download PDFInfo
- Publication number
- CN110005806A CN110005806A CN201910254946.3A CN201910254946A CN110005806A CN 110005806 A CN110005806 A CN 110005806A CN 201910254946 A CN201910254946 A CN 201910254946A CN 110005806 A CN110005806 A CN 110005806A
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- CN
- China
- Prior art keywords
- test
- shell
- test specimen
- sealing
- locking nut
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
A kind of dustproof test box disclosed by the invention takes out pressure test interface connector, it is intended to a kind of high reliability, simply, conveniently, versatility is high, can be improved the pumping pressure test test specimen end interface connector of conventional efficient.The technical scheme is that: it is evacuated between end and screw-threaded coupling end in interface and is formed with the boss with snap effect, on the thread spindle concentric with multi-diameter shaft boss, clamping is installed by the locking nut of test specimen shell, it is sealed between flat shim and sealing ring by test specimen shell, by the locking nut fit sealing, tight seal is realized by smearing silica gel again after sealing.The present invention solves, the problem of test interface processing and fabricating difficulty many kinds of by test specimen shell.
Description
Technical field
The present invention relates to one kind to be mainly used for shell protection rank test, and negative port connector is taken out at dust-proof test test specimen end.
Corresponding national standard is examined for the IP5X (dust-proof) in GB/T4208-2017/IEC60529:2013, IP6X (dirt is close) dust-proof grade
Nuclear test, prevents solid small particles foreign matter from entering dust-proof rank examination experimental rig in shell suitable for various electrical appliance enclosures
The pumping at test specimen end presses port connections.
Background technique
National standard dust test chamber is a kind of suitable for carrying out the various dust-proof rank tests of electrical appliance enclosure IP5X and IP6X
Testing equipment, be the test equipment of the fields such as Aeronautics and Astronautics, automobile, household electrical appliances, scientific research indispensability.Automobile, lamp lighting, low pressure
The products such as electric appliance, communication, motor, instrument, household electrical appliance often shadow by dirt environment in storage, transport and use process
It rings.Dustproof test box is exactly to use manual simulation's dirt environment, to examine test specimen to help the testing equipment of dirt environmental protection ability
The device that dust enters subject shell ability is resisted in evaluation equipment, can identify whether the performance of product can reach by test
To requirement, to be used for the design of product, improvement, identification and exfactory inspection.Dustproof test box is mainly by microcomputer programmable
Logic controller, equipped with pressure gauge, air filtration, pressure regulation three linked piece, connecting tube, the vacuum system of vacuum pump, circulating fan, powder
Dirt heating system composition.Equipment has the air-flow for carrying dust vertical circulation, and test dust can be recycled；Equipment itself has
The situation of laboratory test can be clearly viewed in good sealing performance, when test；Equipment is equipped with a set of pumped vacuum systems, takes out true
Remote control and the parameters such as electrodeless adjustment pressure difference and flow functionally may be implemented in empty set system, increase equipment under test shell
The reliability and operability that dirt exclusion capabilities are examined, improve the efficiency entirely tested；Replaceable dust is arranged at the bottom of equipment
Device, the attached headlamp of large size observation form keeps becoming clear in case, and utilizes the embedded tempered glass of heater, clearly sees at any time
Situation in measuring tank.Instrument connection equipped with the diameter 50mm used for external test power supply line or signal wire.Test is sliding with dirt
Mountain flour.The gas of subject shell is drawn into pumped vacuum systems, filters the dust and water in vacuum-pumping pipeline system by filter
Point, and via electronic type vacuum proportional valve, gas buffer pressure tank shows output signal.
By to product carry out environmental test, research product stored under certain environmental conditions, transport and use in exist
Defect and its failure mechanism, continuously improve the design of product, it is ensured that the environmental suitability of product, to improve product quality,
Save the cost is extremely important.Existing domestic dust-proof test standard is using GB4208-2017 shell protection
Test method specified in grade (IP code), test clause are the clauses in the equivalent IEC60529:2013 used.Standard
In to a kind of types of housings dust-proof test when have a following regulation: subject shell is placed in chamber, and pressure is protected with vacuum pump in shell
It holds subatmospheric.Aspirating hole should be connected on the hole for aiming at test setting.If special product standard is not specified by, this hole
It should be located at against the position of easily worn part.If special hole cannot be arranged, exhaust tube should be connected on cable inlet.As there are also it
His hole (such as more cable inlets or drain hole), this some holes should keep normal operating condition.Test objective is to utilize pressure difference
Air in case is pumped into tested device, sucking rate is 80 times of subject shell volumes, and the speed of evacuation is no more than per hour outside 60 times
Shell volume.Pressure difference must not exceed 2kPa in any case.If the speed of evacuation is 40~60 times of shell volumes per hour, then test into
Row 2h.If maximum differential pressure is 2kPa, and the speed of evacuation is lower than 40 times of shell volumes per hour, then should continuously pump full 80 times of volumes or
After pumping full 8h, test can just stop.As it can be seen that the pressure difference being tested in shell, the speed of evacuation and sucking rate that vacuumize in standard
Relevant regulations are done.In these three variables, pressure difference when test in subject shell, which is no more than 2kPa, be must satisfy.
Dust-proof IP5 first kind product and the close IP6 of dirt in GB4208-2017 shell protection grade (IP code) are required to outer to subject
Shell takes out negative pressure.It is smaller due to testing used dust granule, it is desirable that interface needs good sealing performance.Meanwhile it testing
Usually time requirement is tight, and subject shell is many kinds of, increases many difficulty to the processing and fabricating of test interface.Especially when connecing
Mouthful sealing performance is bad and when shell dust being caused to enter, will be unable to determine whether shell reaches required shell protection etc.
Grade.
Summary of the invention
It is existing many kinds of by test specimen shell the purpose of the present invention is being directed to, test interface processing and fabricating is difficult, the period is long,
Costly problem and its existing shortcoming provides a kind of simple, convenient, and reliable property height, versatile, can be improved reality
The dustproof test box for testing efficiency takes out pressure test test specimen end interface connector.
The present invention realizes that above-mentioned purpose dustproof test box takes out pressure test interface connector, comprising: it is formed with the connector 1 of venthole,
It is characterized by: the connector 1 is that one end is formed with screw thread, one end can connect the bite type straight pipe of exhaust tube, and in thread segment
The boss with snap effect of step shaft type transitional face even is formed between bleeding point, in the screw thread concentric with multi-diameter shaft boss
On axis, clamping is installed by the locking nut 5 of test specimen shell 3, by test specimen shell 3 be sealed in flat shim 4 and sealing ring 2 it
Between, by 5 fit sealing of locking nut, tight seal is realized by smearing silica gel again after sealing.
The present invention has the following beneficial effects: compared with the prior art
High reliability.The present invention will be sealed between flat shim and sealing ring by test specimen shell, be fastened by the locking nut
Sealing realizes tight seal by smearing silica gel again after sealing.By screw threads for fastening sealing ring, then smears the mode of silica gel and realize
Tight seal has good leakproofness, is not susceptible to leak.
Simply, conveniently.The present invention, which is utilized, generally has the characteristics of wiring hole by test specimen, passes through the multi-diameter shaft with snap effect
Clamping is installed by the locking nut of test specimen shell on the thread spindle of connector, can be convenient and quickly realize sealing function, sealing letter
Singly, conveniently.
It is versatile.The present invention uses the connector of thread spindle multi-diameter shaft boss, and it is numerous can easily to produce adaptation type
The port connections of the seriation of more subject shells, because can be adapted for different types of by test specimen and with versatility.
High efficiency.Double-layered quilt test specimen shell is sealed between flat shim and sealing ring clamping by the present invention, is mentioned with locking nut
Dust-proof IP5 first kind shell in shell protection rank test and the close IP6 of dirt are completed for enough pretightning force fit sealings
Degree of protection test, increases test reliability, so that test interface reliability is higher, facilitates operation, improves experiment effect
Rate.By actual test, there is no interface leak event.The processing and manufacturing period of interface is considerably reduced, examination has been saved
Test time cost.Due to port connections can Reusability no longer generate additional test in addition to processing interface needs cost for the first time
Expense, and reduce experimentation cost.It is many kinds of to solve subject shell, the problem of test interface processing and fabricating difficulty.
The present invention is suitable for all kinds of electrical appliance enclosures and does anti-dust performance test and the test of dust-proof rank examination.
Detailed description of the invention
Fig. 1 is the cross-sectional view that institute's dustproof test box of the present invention takes out pressure test interface connector use state.
In figure: 1 connector, 2 sealing rings, 3 by test specimen shell, 4 flat shims, 5 locking nuts, 6 ventholes.
Specific embodiment
Refering to fig. 1.In the embodiment described below, dustproof test box takes out pressure test interface connector, comprising: is formed with ventilation
The connector 1 in hole.The connector 1 is that one end is formed with screw thread, and one end can connect the bite type straight pipe of exhaust tube, and thread segment with
The boss with snap effect of step shaft type transitional face even is formed between bleeding point, in the thread spindle concentric with multi-diameter shaft boss
On, clamping is installed by the locking nut 5 of test specimen shell 3, is sealed between flat shim 4 and sealing ring 2 by test specimen shell 3,
By 5 fit sealing of locking nut, tight seal is realized by smearing silica gel again after sealing.It can pacify after silica gel dries
It fills and starts to test.
It is sealed between flat shim 4 and sealing ring 2 by test specimen shell 3, it is tight to provide enough pretightning forces with locking nut 5
Gu sealing to complete the test of the degree of protection of dust-proof IP5 first kind shell and the close IP6 of dirt in shell protection rank test.
The above embodiments are only used to illustrate the present invention, and not limitation of the present invention, in relation to the common of technical field
Technical staff, in the case where not departing from the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on are all contained in
Within protection scope of the present invention.Such as observation shell protection test by test specimen, and if being needed by test specimen without circular opening
Using the device, need to process the circular opening of suitable size.Round wiring aperture is formed with by test specimen, selects size and this
The aperture that invention equipment series match is tested.
Claims (2)
1. a kind of dustproof test box takes out pressure test interface connector, comprising: be formed with the connector (1) of venthole, it is characterised in that: described
Connector (1) is that one end is formed with screw thread, and one end can connect the bite type straight pipe of exhaust tube, and make between thread segment and bleeding point
There is the boss with snap effect of step shaft type transitional face even that folder is installed on the thread spindle concentric with multi-diameter shaft boss
Tightly by the locking nut (5) of test specimen shell (3), it is sealed between flat shim (4) and sealing ring (2) by test specimen shell (3), quilt
Described locking nut (5) fit sealing realizes tight seal by smearing silica gel again after sealing.
2. dustproof test box as described in claim 1 takes out pressure test test specimen end interface connector, it is characterised in that: outside double-layered quilt test specimen
Shell (3) is sealed between flat shim (4) and sealing ring (2), provides enough pretightning force fit sealings with locking nut (5) come complete
It is tested at the shell protection of dust-proof IP5 first kind shell and the close IP6 of dirt in shell protection rank test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910254946.3A CN110005806A (en) | 2019-03-29 | 2019-03-29 | Dustproof test box takes out pressure test interface connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910254946.3A CN110005806A (en) | 2019-03-29 | 2019-03-29 | Dustproof test box takes out pressure test interface connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110005806A true CN110005806A (en) | 2019-07-12 |
Family
ID=67169143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910254946.3A Pending CN110005806A (en) | 2019-03-29 | 2019-03-29 | Dustproof test box takes out pressure test interface connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110005806A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3861690A (en) * | 1971-02-16 | 1975-01-21 | Itt | Mechanical seal device |
| CN2570074Y (en) * | 2002-08-20 | 2003-09-03 | 昌河飞机工业（集团）有限责任公司 | Air faucet for shaped rubber gasbag |
| CN2681265Y (en) * | 2004-02-09 | 2005-02-23 | 蔡文平 | A magnetic safety warning sign |
| US20050043689A1 (en) * | 2003-08-19 | 2005-02-24 | Lite-On It Corporation | Sealing piston for syringe |
| CN2697934Y (en) * | 2003-12-16 | 2005-05-04 | 上海安乃达驱动技术有限公司 | Water seal structure for water cooling base of motor |
| CN102996954A (en) * | 2011-09-19 | 2013-03-27 | 无锡市永兴金属软管有限公司 | Hose coupler with reliable leak tightness |
| CN202863582U (en) * | 2012-10-09 | 2013-04-10 | 浙江吉利汽车研究院有限公司杭州分公司 | Connecting structure of access hole cover and access hole |
| CN104121297A (en) * | 2014-06-28 | 2014-10-29 | 南车青岛四方机车车辆股份有限公司 | Key groove sealing structure of drum gear coupling |
| CN204062240U (en) * | 2014-06-30 | 2014-12-31 | 江苏九鼎新材料股份有限公司 | A kind of petrochemical industry accumulator joint |
| CN105156447A (en) * | 2015-09-22 | 2015-12-16 | 浙江萤尔光电科技有限公司 | Rivet nut, method for processing waterproof joint on processed lamp shell and pressing block used in method |
-
2019
- 2019-03-29 CN CN201910254946.3A patent/CN110005806A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3861690A (en) * | 1971-02-16 | 1975-01-21 | Itt | Mechanical seal device |
| CN2570074Y (en) * | 2002-08-20 | 2003-09-03 | 昌河飞机工业（集团）有限责任公司 | Air faucet for shaped rubber gasbag |
| US20050043689A1 (en) * | 2003-08-19 | 2005-02-24 | Lite-On It Corporation | Sealing piston for syringe |
| CN2697934Y (en) * | 2003-12-16 | 2005-05-04 | 上海安乃达驱动技术有限公司 | Water seal structure for water cooling base of motor |
| CN2681265Y (en) * | 2004-02-09 | 2005-02-23 | 蔡文平 | A magnetic safety warning sign |
| CN102996954A (en) * | 2011-09-19 | 2013-03-27 | 无锡市永兴金属软管有限公司 | Hose coupler with reliable leak tightness |
| CN202863582U (en) * | 2012-10-09 | 2013-04-10 | 浙江吉利汽车研究院有限公司杭州分公司 | Connecting structure of access hole cover and access hole |
| CN104121297A (en) * | 2014-06-28 | 2014-10-29 | 南车青岛四方机车车辆股份有限公司 | Key groove sealing structure of drum gear coupling |
| CN204062240U (en) * | 2014-06-30 | 2014-12-31 | 江苏九鼎新材料股份有限公司 | A kind of petrochemical industry accumulator joint |
| CN105156447A (en) * | 2015-09-22 | 2015-12-16 | 浙江萤尔光电科技有限公司 | Rivet nut, method for processing waterproof joint on processed lamp shell and pressing block used in method |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190712 |