CN203965102U - Respirator intelligent checking instrument - Google Patents
Respirator intelligent checking instrument Download PDFInfo
- Publication number
- CN203965102U CN203965102U CN201320811177.0U CN201320811177U CN203965102U CN 203965102 U CN203965102 U CN 203965102U CN 201320811177 U CN201320811177 U CN 201320811177U CN 203965102 U CN203965102 U CN 203965102U
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- Prior art keywords
- pipeline
- respirator
- way solenoid
- tracheae
- manual
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- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims abstract description 56
- 238000012360 testing method Methods 0.000 claims abstract description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 3
- 238000013022 venting Methods 0.000 claims description 3
- 238000012795 verification Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
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- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model discloses a kind of respirator intelligent checking instrument, comprise the inflation/deflation part for respirator being inflated or being bled, for detection of respirator impermeability, discharge pressure, quantitative oxygen flow, test section and the control section for controlling inflation/deflation some work state and the detection information of test section being processed and shown of at least one parameter in large flow and self-complementary pressure, inflation/deflation partly comprises automatic inflating-air device, charge and discharge tracheae and be communicated in the inflation/deflation changeover module charging and discharging between tracheae and automatic inflating-air device inlet end and outlet side, automatic inflating-air device is air pump, respirator of the present utility model can carry out airtight detection to respirator automatically with intelligent checking instrument, discharge pressure detects, self-complementary pressure detection and quantitatively oxygen flow detect, and testing result is intuitively shown on display module, have easy and simple to handle, the advantage that verification efficiency is high.
Description
Technical field
The utility model relates to a kind of respirator calibration equipment, specifically a kind of respirator intelligent checking instrument.
Background technology
Respirator is widely used in the security fields such as colliery, fire-fighting, chemical industry, oil, make fireman or the rescue personnel that speedily carries out rescue work can be under the rugged surroundings that are full of dense smoke, poison gas, steam or anoxic the putting out a fire of safety, rescue and relief work and rescue, the quality of respirator performance directly concerns rescue personnel's inherently safe, so respirator must regularly check in use procedure at equipment, maintenance and verification, guarantees that it is in good use state.Existing respirator is low by tester automaticity, only can realize automatic feeding, needs manual adjustments tester with the different performance parameter of check respirator, and verification efficiency is lower, complex operation.
Therefore, for overcoming the above problems, need a kind of automaticity higher, can automatically to respirator, carry out the respirator intelligent checking instrument of airtight detection, discharge pressure detection, self-complementary pressure detection, quantitative oxygen flow detection and large flow detection.
Utility model content
In view of this, the purpose of this utility model is to overcome defect of the prior art, provides a kind of and can automatically to respirator, carry out the respirator intelligent checking instrument of airtight detection, discharge pressure detection, self-complementary pressure detection and flow detection.
Haustorium of the present utility model intelligent checking instrument, comprise inflation/deflation for respirator being inflated or being bled part, for detection of respirator impermeability, discharge pressure, quantitatively test section and the control section for controlling inflation/deflation some work state and the detection information of test section being processed and shown of oxygen flow, large flow and at least one parameter of self-complementary pressure, inflation/deflation partly comprises automatic inflating-air device, charges and discharge tracheae I and is communicated in the inflation/deflation changeover module charging and discharging between tracheae and automatic inflating-air device inlet end and outlet side; Described automatic inflating-air device is air pump;
Further, described inflation/deflation changeover module comprises draft tube I, escape pipe I and four normal close two-position two-way solenoid I, draft tube I, escape pipe I and charge and discharge tracheae I and be three-way pipe, the first pipeline connection of draft tube I is in the air intake opening of automatic inflating-air device, the second pipeline of draft tube I is communicated in the first pipeline that charges and discharge tracheae I by a normal close two-position two-way solenoid I, the 3rd pipeline of draft tube I is communicated in the external world by a normal close two-position two-way solenoid I, the first pipeline connection of escape pipe I is in the gas outlet of automatic inflating-air device, the second pipeline of escape pipe I is communicated in the second pipeline that charges and discharge tracheae I by a normal close two-position two-way solenoid I, the 3rd pipeline of escape pipe I is communicated in the external world by a normal close two-position two-way solenoid I, charge and discharge the 3rd pipeline of tracheae I for being communicated in the detection gas port of respirator,
Further, described test section comprises detection tracheae, pressure transducer, flow sensor I, normal close two-position two-way solenoid II and two-position two-way solenoid valve I open in usual, detection tracheae is three-way pipe, flow sensor I is located on the first pipeline that detects tracheae for detection of gas flow signal in this pipeline and is produced corresponding flow electric signal, two-position two-way solenoid valve I open in usual and normal close two-position two-way solenoid II are located at successively and are detected on the second pipeline of tracheae and the 3rd pipeline for controlling the break-make of respective line, pressure transducer is located on the 3rd pipeline that detects tracheae for detection of gaseous tension in this pipeline and is produced corresponding electric pressure signal, pressure transducer is close to the 3rd pipeline outer end with respect to the normal close two-position two-way solenoid II on the 3rd pipeline and arranges,
Further, described test section also comprises that connection respirator detects the large flow detection pipe in gas port and the external world, and described large flow detection pipe inside is provided with the flow sensor II that detects the interior gas flow signal of this pipeline and produce corresponding flow electric signal;
Further, described respirator also comprises for controlling the automatic jacking block of respirator vent valve break-make with intelligent checking instrument, and jacking block is controlled automatic ejection and retraction by control section automatically;
Further, described inflation/deflation changeover module also comprises two-position two-way solenoid valve II open in usual; Described two-position two-way solenoid valve II open in usual be located at charge and discharge tracheae the 3rd pipeline for controlling the break-make of this pipeline;
Further, the power module that described control section comprises controller and is connected in described controller signals, battery module and display module, power module is for carrying out transformation and AC-DC conversion to alternating current, controller is electrically connected on normal close two-position two-way solenoid I, two-position two-way solenoid valve I open in usual, two-position two-way solenoid valve II open in usual and normal close two-position two-way solenoid II are used for controlling normal close two-position two-way solenoid I, two-position two-way solenoid valve I open in usual, two-position two-way solenoid valve II open in usual and normal close two-position two-way solenoid II are moved accordingly, pressure transducer, flow sensor I and flow sensor II are connected in the signal input part of controller for corresponding flow electric signal and electric pressure signal are sent to controller, controller is processed backward display module to flow electric signal and electric pressure signal and is sent display measured flow and pressure are intuitively shown,
Further, described respirator also comprises the manual air supply system for respirator is manually inflated and bled with intelligent checking instrument, manually air supply system comprises manual feeder, manual two-position four way change valve for manual switchover punching venting, described in being located at, charge and discharge on tracheae I the 3rd pipeline for switching the manual two position three-way valve of automatic and manual inflation/deflation pattern, be communicated in manual two-position four way change valve and manually between two position three-way valve, charge and discharge tracheae II, be located at and charge and discharge in tracheae II for controlling the manual two position two-way valve of this pipeline break-make and being communicated in two-position four way change valve and manual draft tube II and the escape pipe II between feeder, described manual air supply system also comprises for manually controlling the manual jacking block of respirator vent valve break-make,
Further, described manual feeder comprises air bag, and air bag is provided with air intake opening and gas outlet, and the air intake opening of air bag is communicated in escape pipe II, the gas outlet of air bag is communicated in draft tube II, and manual feeder also comprises is located at the air intake opening of air bag and two retaining valves of gas outlet;
The beneficial effects of the utility model are: respirator of the present utility model can carry out airtight detection, exhaust detection, self-complementary pressure detection, quantitative oxygen flow detection and large flow detection to respirator automatically with intelligent checking instrument, and testing result is intuitively shown on display module, compare existing respirator and only can realize automatic feeding with tester, need manual adjustments tester with the different performance parameter of check respirator, respirator of the present utility model has easy and simple to handle with intelligent checking instrument, the advantage that verification efficiency is high.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model.
Embodiment
Fig. 1 is structural representation of the present utility model, as shown in the figure, haustorium in the present embodiment intelligent checking instrument, comprise the inflation/deflation part for respirator being inflated or being bled, for detection of respirator impermeability, discharge pressure, quantitative oxygen flow, test section and the control section for controlling inflation/deflation some work state and the detection information of test section being processed and shown of at least one parameter in large flow and self-complementary pressure, inflation/deflation partly comprises automatic inflating-air device 1, charge and discharge tracheae I 5 and be communicated in the inflation/deflation changeover module charging and discharging between tracheae I 5 and automatic inflating-air device 1 inlet end and outlet side, described automatic inflating-air device is air pump.
In the present embodiment, described inflation/deflation changeover module comprises draft tube I 2, escape pipe I 3 and four normal close two-position two-way solenoid I 4, draft tube I 2, escape pipe I 3 and charge and discharge tracheae I 5 and be three-way pipe, the first pipeline connection of draft tube I 2 is in the air intake opening of automatic inflating-air device 1, the second pipeline of draft tube I 2 is communicated in the first pipeline that charges and discharge tracheae I 5 by a normal close two-position two-way solenoid I 4, the 3rd pipeline of draft tube I 2 is communicated in the external world by a normal close two-position two-way solenoid I 4, the first pipeline connection of escape pipe I 3 is in the gas outlet of automatic inflating-air device 1, the second pipeline of escape pipe I 3 is communicated in the second pipeline that charges and discharge tracheae I 5 by a normal close two-position two-way solenoid I 4, the 3rd pipeline of escape pipe I 3 is communicated in the external world by a normal close two-position two-way solenoid I 4, charge and discharge the 3rd pipeline of tracheae I 5 for being communicated in the detection gas port 9 of respirator, when respirator is carried out to impermeability, when discharge pressure detects, need inflate detecting gas port 9, when respirator is carried out to self-complementary pressure detection, need bleed to detecting gas port 9, by can realize the switching of inflating and bleeding detecting gas port 9 to the control of normal close two-position two-way solenoid I 4 break-makes.
In the present embodiment, described test section comprises detects tracheae 17, pressure transducer 15, flow sensor I 18, normal close two-position two-way solenoid II 16 and two-position two-way solenoid valve I 8 open in usual, detecting tracheae 17 is three-way pipe, flow sensor I 18 is located on the first pipeline that detects tracheae 17 for detection of gas flow signal in this pipeline and is produced corresponding flow electric signal, two-position two-way solenoid valve I open in usual 8 and normal close two-position two-way solenoid II 16 are located at successively and are detected on the second pipeline of tracheae 17 and the 3rd pipeline for controlling the break-make of respective line, pressure transducer 15 is located on the 3rd pipeline that detects tracheae 17 for detection of gaseous tension in this pipeline and is produced corresponding electric pressure signal, pressure transducer 15 is close to the 3rd pipeline outer end with respect to the normal close two-position two-way solenoid II 16 on the 3rd pipeline and arranges, when tester carries out impermeability detection to lung ventilator, when discharge pressure detection and self-complementary pressure detection, 16 power-off of normal close two-position two-way solenoid II are closed, two-position two-way solenoid valve I 8 energisings simultaneously open in usual are closed, when respirator carries out flow detection with intelligent checking instrument to respirator, 16 energisings of normal close two-position two-way solenoid II are opened, two-position two-way solenoid valve I 8 power-off open in usual are simultaneously opened.
In the present embodiment, described test section also comprises the large flow detection pipe that connects respirator detection gas port and the external world, described large flow detection pipe inside is provided with the flow sensor II 25 that detects the interior gas flow signal of this pipeline and produce corresponding flow electric signal, large flow detection pipe only just accesses respirator and detects gas port when needs are measured hand benefit or self-complementary flow, generally, do not access.
In the present embodiment, described respirator also comprises for controlling the automatic jacking block 14 of respirator vent valve break-make with intelligent checking instrument, automatically jacking block 14 is controlled automatic ejection and retraction by control section, when tester carries out impermeability detection to respirator, automatic jacking block 14 ejects the device vent valve that can ensure respiration and is not opened, when respirator carries out discharge pressure detection with intelligent checking instrument to respirator, jacking block 14 needs automatic retraction can normally open with the device vent valve that ensures respiration automatically.
In the present embodiment, described inflation/deflation changeover module also comprises two-position two-way solenoid valve II 7 open in usual, described two-position two-way solenoid valve II 7 open in usual be located at charge and discharge tracheae I 5 the 3rd pipeline for controlling the break-make of this pipeline, when respirator carries out impermeability detection with intelligent checking instrument to respirator, when inflation/deflation part is to after detecting gas port 9 inflations, two-position two-way solenoid valve II 7 open in usual needs energising to close, to avoid Leakage Gas.
In the present embodiment, the power module 11 that described control section comprises controller 13 and is connected in described controller signals output terminal, battery module 10 and display module 12, power module 10 is for carrying out transformation and AC-DC conversion to alternating current, controller 13 is electrically connected on normal close two-position two-way solenoid I 4, two-position two-way solenoid valve I 8 open in usual, two-position two-way solenoid valve II 7 open in usual and normal close two-position two-way solenoid II 16 are for controlling normal close two-position two-way solenoid I 4, two-position two-way solenoid valve I 8 open in usual, two-position two-way solenoid valve II 7 open in usual and normal close two-position two-way solenoid II 16 are moved accordingly, pressure transducer 15 and flow sensor 18 are connected in the signal input part of controller 13 for corresponding flow electric signal and electric pressure signal are sent to controller 13, 13 pairs of flow electric signal of controller and electric pressure signal are processed backward display module 12 and are sent display measured flow and pressure are intuitively shown, when respirator carries out impermeability with intelligent checking instrument to respirator, discharge pressure, when flow and self-complementary pressure detection, tester can directly be used 220V AC-powered, power module 11 will after alternating current transformation and AC-DC conversion be controller 13 power supplies, controller 13 is controlled automatically to the switching of each solenoid valve, thereby realize the automatic detection to above-mentioned parameter, in the situation that extraneous non-transformer can be used, by battery module 10, it is each sensor, controller and display module power supply.
In the present embodiment, described respirator also comprises the manual air supply system for respirator is manually inflated and bled with intelligent checking instrument, manually air supply system comprises manual feeder, manual two-position four way change valve 20 for manual switchover punching venting, described in being located at, charge and discharge on tracheae I 5 the 3rd pipeline for switching the manual two position three-way valve 6 of automatic and manual inflation/deflation pattern, be communicated in manual two-position four way change valve 20 and manually between two position three-way valve 6, charge and discharge tracheae II 19, be located at and charge and discharge in tracheae II 19 for controlling the manual two position two-way valve 21 of this pipeline break-make and being communicated in two-position four way change valve 20 and manual draft tube II 22 and the escape pipe II 23 between feeder, when without external power supply, can use manual air supply system respirator manually to be inflated or bled the detection of each performance parameter of respirator, when carrying out manual air feed, need manually two position three-way valve 6 to be switched to manual inflation/deflation pattern, by manual two-position four way change valve 20, realize the switching that respirator is inflated and bled simultaneously, manually air supply system also comprises for manually controlling the manual jacking block (not shown) of respirator vent valve break-make, when tester carries out manual impermeability detection to respirator, manual jacking block is manually put into tester relevant position, guarantee that vent valve is not opened, other parameter detecting can directly be taken off manual jacking block.
In the present embodiment, described manual feeder comprises air bag 24, air bag is provided with air intake opening and gas outlet, the air intake opening of air bag is communicated in escape pipe II 23, the gas outlet of air bag is communicated in draft tube II 22, and manual feeder also comprises is located at the air intake opening of air bag 24 and two retaining valves of gas outlet, when respirator is manually detected, only need, with hand extruding gasbag 24 repeatedly, can respirator be inflated or be bled.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (5)
1. a respirator intelligent checking instrument, is characterized in that: comprise inflation/deflation part for respirator being inflated and being bled, for detection of respirator impermeability, discharge pressure, quantitatively test section and the control section for controlling inflation/deflation some work state and the detection information of test section being processed and shown of oxygen flow, large flow and at least one parameter of self-complementary pressure; Described inflation/deflation partly comprises automatic inflating-air device, charges and discharge tracheae I and is communicated in the inflation/deflation changeover module charging and discharging between tracheae I and automatic inflating-air device inlet end and outlet side; Described automatic inflating-air device is air pump;
Described inflation/deflation changeover module comprises draft tube I, escape pipe I and four normal close two-position two-way solenoid I; Described draft tube I, escape pipe I and charge and discharge tracheae I and be three-way pipe; The first pipeline connection of described draft tube I is in the air intake opening of automatic inflating-air device, the second pipeline of draft tube I is communicated in the first pipeline that charges and discharge tracheae I by a normal close two-position two-way solenoid I, the 3rd pipeline of draft tube I is communicated in the external world by a normal close two-position two-way solenoid I; The first pipeline connection of described escape pipe I is in the gas outlet of automatic inflating-air device, the second pipeline of escape pipe I is communicated in the second pipeline that charges and discharge tracheae I by a normal close two-position two-way solenoid I, the 3rd pipeline of escape pipe I is communicated in the external world by a normal close two-position two-way solenoid I; Described the 3rd pipeline that charges and discharge tracheae I is for being communicated in the detection gas port of respirator;
Described inflation/deflation changeover module also comprises two-position two-way solenoid valve II open in usual; Described two-position two-way solenoid valve II open in usual be located at charge and discharge tracheae I the 3rd pipeline for controlling the break-make of this pipeline;
Described test section comprises detects tracheae, pressure transducer, flow sensor I, normal close two-position two-way solenoid II and two-position two-way solenoid valve I open in usual; Described detection tracheae is three-way pipe; Described flow sensor I is located on the first pipeline that detects tracheae for detection of gas flow signal in this pipeline and is produced corresponding flow electric signal; Described two-position two-way solenoid valve I open in usual and normal close two-position two-way solenoid II are located at successively and are detected on the second pipeline of tracheae and the 3rd pipeline for controlling the break-make of respective line; Described pressure transducer is located on the 3rd pipeline that detects tracheae for detection of gaseous tension in this pipeline and is produced corresponding electric pressure signal, and pressure transducer is close to the 3rd pipeline outer end with respect to the normal close two-position two-way solenoid II on the 3rd pipeline and arranges;
Described control section comprises controller and is connected in the power module of described controller, battery module and display module; Described power module is for carrying out transformation and AC-DC conversion to alternating current; Described controller is electrically connected on normal close two-position two-way solenoid I, two-position two-way solenoid valve I open in usual, two-position two-way solenoid valve II open in usual and normal close two-position two-way solenoid II, and described controller is used for controlling normal close two-position two-way solenoid I, two-position two-way solenoid valve I open in usual, two-position two-way solenoid valve II open in usual and normal close two-position two-way solenoid II and moves accordingly; Described pressure transducer, flow sensor I and flow sensor II are connected in the signal input part of controller for corresponding flow electric signal and electric pressure signal are sent to controller, and described controller is processed backward display module to flow electric signal and electric pressure signal and sent display measured flow and pressure are intuitively shown.
2. respirator according to claim 1 intelligent checking instrument, it is characterized in that: described test section also comprises can connect the large flow detection pipe that respirator detects gas port and the external world, described large flow detection pipe inside is provided with the flow sensor II that detects the interior gas flow signal of this pipeline and produce corresponding flow electric signal.
3. respirator according to claim 2 intelligent checking instrument, is characterized in that: described respirator also comprises for controlling the automatic jacking block of respirator vent valve break-make with intelligent checking instrument; Described automatic jacking block is controlled automatic ejection and retraction by described control section.
4. respirator according to claim 3 intelligent checking instrument, is characterized in that: described respirator also comprises the manual air supply system for respirator is manually inflated and bled with intelligent checking instrument, described manual air supply system comprises manual feeder, manual two-position four way change valve for manual switchover punching venting, described in being located at, charge and discharge on tracheae I the 3rd pipeline for switching the manual two position three-way valve of automatic and manual inflation/deflation pattern, be communicated in manual two-position four way change valve and manually between two position three-way valve, charge and discharge tracheae II, be located at and charge and discharge in tracheae II for controlling the manual two position two-way valve of this pipeline break-make and being communicated in two-position four way change valve and manual draft tube II and the escape pipe II between feeder.
5. respirator according to claim 4 intelligent checking instrument, is characterized in that: described manual feeder comprises air bag, and described air bag is provided with air intake opening and gas outlet, and the air intake opening of air bag is communicated in escape pipe II, and the gas outlet of air bag is communicated in draft tube II; Described manual feeder also comprises is located at the air intake opening of air bag and two retaining valves of gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320811177.0U CN203965102U (en) | 2013-12-10 | 2013-12-10 | Respirator intelligent checking instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320811177.0U CN203965102U (en) | 2013-12-10 | 2013-12-10 | Respirator intelligent checking instrument |
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| Publication Number | Publication Date |
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| CN203965102U true CN203965102U (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320811177.0U Expired - Lifetime CN203965102U (en) | 2013-12-10 | 2013-12-10 | Respirator intelligent checking instrument |
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| CN (1) | CN203965102U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146231A (en) * | 2019-06-17 | 2019-08-20 | 蚌埠兴创电子科技有限公司 | A kind of helium Mass Spectrometer Method device for saving helium |
| CN111050859A (en) * | 2017-09-01 | 2020-04-21 | 3M创新有限公司 | Fit testing method for respirators having a sensing system |
| CN111481786A (en) * | 2020-05-14 | 2020-08-04 | 杨建新 | Synchronous auxiliary breathing device of air bag inflation and deflation type breathing machine |
| CN113686518A (en) * | 2021-08-25 | 2021-11-23 | 哈尔滨瑞源矿业装备有限公司 | Novel automatic calibration device |
-
2013
- 2013-12-10 CN CN201320811177.0U patent/CN203965102U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111050859A (en) * | 2017-09-01 | 2020-04-21 | 3M创新有限公司 | Fit testing method for respirators having a sensing system |
| CN111050859B (en) * | 2017-09-01 | 2022-04-29 | 3M创新有限公司 | Fit testing method for respirators having a sensing system |
| CN110146231A (en) * | 2019-06-17 | 2019-08-20 | 蚌埠兴创电子科技有限公司 | A kind of helium Mass Spectrometer Method device for saving helium |
| CN111481786A (en) * | 2020-05-14 | 2020-08-04 | 杨建新 | Synchronous auxiliary breathing device of air bag inflation and deflation type breathing machine |
| CN113686518A (en) * | 2021-08-25 | 2021-11-23 | 哈尔滨瑞源矿业装备有限公司 | Novel automatic calibration device |
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Granted publication date: 20141126 |
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