CN102927669B - Bilateral shock-wave resistant air vent valve - Google Patents
Bilateral shock-wave resistant air vent valve Download PDFInfo
- Publication number
- CN102927669B CN102927669B CN201210480899.2A CN201210480899A CN102927669B CN 102927669 B CN102927669 B CN 102927669B CN 201210480899 A CN201210480899 A CN 201210480899A CN 102927669 B CN102927669 B CN 102927669B
- Authority
- CN
- China
- Prior art keywords
- shock
- spool
- wave
- valve body
- air vent
- 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.)
- Active
Links
Landscapes
- Building Environments (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention relates to heating and ventilation equipment for buildings, particularly to heating and ventilation equipment for buildings in case of explosion, and particularly provides a bilateral shock-wave resistant air vent valve, which includes a valve body and valve cores, wherein the valve body forms a valve body framework with a front cover, a rear cover, a beam A and a beam B. The bilateral shock-wave resistant air vent valve is characterized in that holes are arranged in the valve body and communicated with the front cover and the rear cover; the valve cores are placed in the holes and performs translational movement inside the holes; the bilateral shock-wave resistant air vent valve further includes a reset device connected with the valve body and the valve cores respectively; under the normal ventilation condition, the valve cores are placed inside the middle parts of the holes under the acting force of the reset device, and when explosive shock wave impacts the valve cores and force exerted on the valve cores within the action scope of the shock wave exceeds the set value of the reset device, the valve cores move toward one sides of the holes gradually to close a ventilation passage. The invention has the advantages that the bilateral shock-wave resistant air vent valve can be used for protecting the building and inside facilities in case of shock wave, and meets the requirement for ventilation under the normal condition.
Description
Technical field
The present invention relates to the heating and ventilating equipment of building, particularly relating to the heating and ventilating equipment of the building when blasting, be specially a kind of bilateral shock-wave resistant air vent valve.
Background technology
As shown in Figure 1, explosion wave mainly contains two stages and can produce more broken ring: the first stage be blast when occurring explosion center point release high temperature and several ten thousand atmospheric shock waves of about 3000 degree thereupon.Shock wave moves to surrounding at a high speed with sphere form, this shock wave to object, there is very large impact cutting ring power.The increase of shock wave displacement thereupon, the pressure of shock wave can be decayed rapidly; Second stage is the effect of inertia of air due to fluctuation of explosion center point, air occurs and shrinks generation negative pressure, and incident is once strong suction wave.When suction wave produces, building internal gas pressure is greater than outdoor air pressure, thus produces the thrust of from-inner-to-outer to ventilation valve.The suction wave of some strength can cause brokenly ring to facility in building equally, particularly when ventilation valve is very near by explosion center.
The shock-wave resistant air vent valve of prior art as shown in Figure 2 and Figure 3, the mode all adopting moving vane to rotate carries out closing or opening vent passages.When normally ventilating, applying certain torsion by spring mechanism to blade, making it open to set angle, ventilation function is provided.When being subject to shock wave and impacting, when the torsion that the shock wave pressure putting on blade produces is greater than design torsion, blade is closed, and prevents shock wave from entering shielded Architectural Equipment.Existing shock-wave resistant air vent valve all considers the impact tackling malleation shock wave, but when suction wave arrives, as shown in Figure 4, the shock-wave resistant air vent valve of prior art will open blade automatically to maximum angle, thus can not for building the protection that interior facility provides enough.
Summary of the invention
The technical problem to be solved in the present invention is: provide two stages that a kind of malleation at blast impulse is impacted and negative pressure is impacted, all can protect facility in building and building, and the bilateral shock-wave resistant air vent valve of satisfactory draught capacity can be met when normal condition.
The object of the present invention is achieved like this:
Bilateral shock-wave resistant air vent valve, comprises valve body and spool, and valve body forms valve body framework by protecgulum, bonnet, Liang Jia and Liang Yi, it is characterized in that, described valve body is provided with hole, the through protecgulum in described hole and bonnet; Described spool to be placed in described hole and can translation in described hole, also comprise resetting means, described resetting means connects described valve body and described spool respectively, under normal ventilation condition, described spool is in the middle part in described hole by the active force of described resetting means, when described in blast impulse wave impact during spool, and the stressed setting value exceeding described resetting means of described spool in shock wave territory, described spool moves to the side in described hole, until close vent passages.
Hole on wherein said spool and described valve body matches, to ensure that described spool can translation in the hole, the cross section of described spool can be round, also can be rectangle etc.
Under normal circumstances, air between outside described bilateral shock-wave resistant air vent valve and inside described bilateral shock-wave resistant air vent valve carries out convection current by vent passages, but after described bilateral shock-wave resistant air vent valve is subject to malleation or negative pressure is impacted, described spool moves to side, until close vent passages.
Described resetting means is stage clip, and described stage clip is arranged at the both sides of described spool, and described spool is connected with described valve body by described stage clip.Described stage clip can be arranged at the both sides of described spool symmetrically.
Also comprise axle, described stage clip is through on axle, and described spool is provided with through hole, and described axle is connected with valve body through described through hole.
Described valve body also comprises the right baffle-plate and right baffle plate that are respectively in longitudinal centre line both sides, described hole, described right baffle-plate and described right baffle plate are positioned at valve body framework and are fixed on valve body framework, and described right baffle-plate comprises upper left baffle plate and the lower-left baffle plate of the both sides being respectively in described hole cross central line; Described right baffle plate comprises the both sides upper right baffle plate and bottom right baffle plate that are respectively in described hole cross central line.
Further, also comprise framework, described valve body is fixing with on described framework, and described framework is used for fixing with building masonry wall.
Further, be also provided with shock wave peak records device, described shock wave peak records device is fixed on described framework.Described shock wave peak records device, comprises lower cover, upper rack, axle A, spring A, spring B and lower tooth bar; Described spring A be placed in described under cover, described lower tooth bar is placed on described spring A; Described upper rack and described spring B are through on described axle A, and described axle A two ends and described lower cover are fixed, and described spring B two ends abut described lower cover and described upper rack; Described upper rack is placed on described lower tooth bar.Also be provided with upper cover, described upper cover be covered on described under cover and be detachably fixedly connected with described lower cover.
Further, also comprise pad, described pad is arranged between described spool and described stage clip.
Beneficial effect achieved by the present invention is: when explosion happens, and no matter be malleation shock wave or negative pressure shock wave thereupon, the present invention all can protect building and inner facility simultaneously, and the intensity of shock wave can carry out record.
Accompanying drawing explanation
Fig. 1 is that shock wave shows brokenly that ring power is intended to.
Fig. 2 is normal lower prior art view of ventilating.
Prior art view when Fig. 3 is first stage malleation shock wave.
Prior art view when Fig. 4 is second stage negative pressure shock wave.
Fig. 5 is the present invention's schematic diagram in normal ventilation situation.
Fig. 6 is the schematic diagram of the present invention under malleation is impacted.
Fig. 7 is the schematic diagram of the present invention under negative pressure is impacted.
Fig. 8 is structural representation of the present invention.
Fig. 9 is C enlarged schematic partial view in Fig. 8.
Figure 10 is valve body 2 schematic diagram of the present invention.
Figure 11 is the schematic perspective view of valve body 2 of the present invention.
Figure 12 is close-up schematic view in Fig. 5 of the present invention.
Figure 13 is the schematic diagram of the present invention when being provided with shock wave peak records device.
Figure 14 is shock wave peak records device schematic diagram of the present invention.
Figure 15 is Figure 14 A-A generalized section of the present invention.
In figure:
1 framework,
2 valve bodies,
21 holes, 22 protecgulums, 23 bonnets, 24 Liang Jia, 25 beam second, 26a1 baffle plate, 26a2 baffle plate, 26c1 baffle plate, 26c2 baffle plate, 26c3 baffle plate, 26c4 baffle plate, 26b1 baffle plate, 26b2 baffle plate;
3 stage clips,
4 axles,
5 spools,
51 through holes,
6 bolts,
7 pads,
The width in H hole 21,
Distance between Wa1 baffle plate 26a1 and baffle plate 26c1, the distance between Wa2 baffle plate 26c1 and baffle plate 26c3,
Distance between Wa3 baffle plate 26c3 and baffle plate 26a2, the distance between Wb1 baffle plate 26b1 and baffle plate 26c2,
Distance between Wb2 baffle plate 26c2 and baffle plate 26c4, the distance between Wb3 baffle plate 26c4 and baffle plate 26b2,
8 vent passages,
9 shock wave peak records devices,
901 upper covers, 902 lower covers, 903 upper racks, 904 times tooth bars, 905 spring B, 906 spring A, 907 axle A, 908 cap bore, 909 installing holes, 914 teeth groove.
Detailed description of the invention
In order to the beneficial effect more properly describing the present invention and bring, below in conjunction with accompanying drawing, the present invention is described further, but protection scope of the present invention is not limited to the content that detailed description of the invention is stated.
Composition graphs 8, Fig. 9, Figure 10, Figure 11, Figure 12 are known,
Bilateral shock-wave resistant air vent valve, comprises the compositions such as framework 1, valve body 2, stage clip 3, axle 4, spool 5, pad 7.
Valve body 2 and framework 1 are connected and fixed by bolt 6.Bilateral shock-wave resistant air vent valve is fixed on the body of wall of building by framework 1.
Valve body 2: the beam first 24 be connected respectively by tandem protecgulum 22 and bonnet 23 and Liang Yi 25 form valve body framework, valve body 2 is hollow out.The through protecgulum 22 of its mesopore 21 and bonnet 23.
Baffle plate is fixed on valve body framework.Baffle plate comprises right baffle-plate and right baffle plate.Right baffle-plate comprises baffle plate 26a1 and the baffle plate 26a2 of apportion upper/lower terminal; And baffle plate 26c1 between adjacent holes 21 and baffle plate 26c3, wherein baffle plate 26c1 and baffle plate 26c3 is U-shaped; And baffle plate 26c1 and baffle plate 26c3 is between baffle plate 26a1 and baffle plate 26a2.
Right baffle plate comprises baffle plate 26b1 and 26b2 of apportion upper/lower terminal, and baffle plate 26c2 between adjacent holes and baffle plate 26c4, and wherein baffle plate 26c2 and baffle plate 26c4 is U-shaped.And baffle plate 26c2 and baffle plate 26c4 is between baffle plate 26b1 and baffle plate 26b2.
Baffle plate 26a1 and baffle plate 26b1, baffle plate 26c1 and baffle plate 26c2, baffle plate 26c3 and baffle plate 26c4, baffle plate 26a2 and baffle plate 26b2 are respectively in the both sides of hole 21 longitudinal centre line.
Distance Wa1 between baffle plate 26a1 and baffle plate 26c1 is less than the width H in hole 21.Distance Wb1 between baffle plate 26b1 and baffle plate 26c2 is less than the width H in hole 21.And distance Wa1 is identical with distance Wb1.
Distance Wa2 between baffle plate 26c1 and baffle plate 26c3 is less than the width H in hole 21.Distance Wb2 between baffle plate 26c2 and baffle plate 26c4 is less than the width H in hole 21.And distance Wa2 is identical with distance Wb2.
Distance Wa3 between baffle plate 26a2 and baffle plate 26c3 is less than the width H in hole 21.Distance Wb3 between baffle plate 26b2 and baffle plate 26c4 is less than the width H in hole 21.And distance Wa3 is identical with distance Wb3.
Spool 5 is tubulose, and spool 5 is provided with the through hole 51 of a through both sides tube wall.Spool 5 can be rectangular tube, square tube, pipe etc., and the shape in hole 21 and the outline of spool 5 match, and spool 5 to be through in hole 21 and can translation in hole 21.Under normal ventilation condition, spool 5 is in the pressure balance district, middle part in hole 21 during by the active force of resetting means, spool 5 does not contact with right baffle plate with right baffle-plate, and body of wall inside and outside both sides air is undertaken ventilating by passage 8, convection current.
Formed by baffle plate 26a1, baffle plate 26b1, baffle plate 26c1, baffle plate 26c2, baffle plate 26c3, baffle plate 26c4, baffle plate 26a2, baffle plate 26b2 and the gap between hole 21 and spool 5 by passage 8.
Stage clip 3 and axle 4 form resetting means.
Axle 4 is arranged in through hole 51 and two ends and is fixedly connected with valve body 2 respectively.The two ends of axle 4 are also arranged with stage clip 3, and 2 stage clip 3 symmetries are respectively in the both sides of spool 5, and spool 5 can move on axle 4; Axle 4 plays the effect of fixed spool movement locus, and stage clip 3 plays the effect of reset.
Pad 7 is provided with between stage clip 3 and spool 5.Pad 7 plays the effect of sealing.
In varied situations, the operation principle of bilateral shock-wave resistant air vent valve is as follows:
Resetting means connects valve body 2 and spool 5 respectively, under normal ventilation condition, spool 5 is in the middle part (pressure balance district) in hole 21 by the effect of resetting means, when explosion wave dash valve 5, the stressed setting value exceeding resetting means of spool 5 in shock wave territory, spool 5 moves to the side in hole 21, until against right baffle-plate or right baffle plate.
As shown in Fig. 5, Fig. 8, Figure 12: under normal ventilation condition, bilateral shock-wave resistant air vent valve is in the pars intermedia (pressure balance district) in hole 21 by the active force of stage clip 3; Baffle plate 26a1 and there is space between hole 21 and spool 5, baffle plate 26b1 and there is space between hole 21 and spool 5, baffle plate 26c1 and there is gap between hole 21 and spool 5, baffle plate 26c2 and there is gap between hole 21 and spool 5, baffle plate 26c3 and there is gap between hole 21 and spool 5, baffle plate 26c4 and there is gap between hole 21 and spool 5, baffle plate 26a2 and there is space between hole 21 and spool 5, baffle plate 26b2 and there is space between hole 21 and spool 5, air flows between above-mentioned space, forms vent passages 8; Interior of building and extraneous air carry out ventilation by forced draft by vent passages 8, can air intake or outwards air draft.
As shown in Figure 6: when explosion wave impacts spool 5 in export-oriented building, pressure as shock wave territory spool 5 exceedes setting value, spool 5 will move to the right, as shock wave reaches setting close value in the pressure of spool 5, spool 5 incites somebody to action tight abutment baffle plate 26b1 simultaneously, baffle plate 26c2, baffle plate 26c4 and baffle plate 26b2, thus close vent passages 8, namely by closing baffle plate 26b1 and the gap between hole 21 and spool 5, baffle plate 26c2 and the space between hole 21 and spool 5, baffle plate 26c4 and the space between hole 21 and spool 5, baffle plate 26b2 and the gap between hole 21 and spool 5, intercept shock wave, building inner air and outer air is made not form convection current.
As shown in Figure 7: when explosion wave from interior to building, impact spool 5 time, namely when explosion wave transfers negative pressure to from malleation, as building pressure acts on the setting value of spool 5, spool 5 will move to the left, as shock wave reaches setting close value in the pressure of spool 5, spool 5 will be close to baffle plate 26a1 simultaneously, baffle plate 26c1, baffle plate 26c3, baffle plate 26a2, namely baffle plate 26a1 and the space between hole 21 and spool 5 is closed, baffle plate 26c1 and the space between hole 21 and spool 5, baffle plate 26c3 and the space between hole 21 and spool 5, baffle plate 26a2 and the space between hole 21 and spool 5, thus close vent passages 8, intercept shock wave, building inner air and outer air is made not form convection current.
In conjunction with Figure 13,14 and 15 known: framework 1 is provided with screwed hole, shock wave peak records device covers for 9 times and is provided with installing hole 909, bolt is through at installing hole 909 and framework 1 is provided with screwed hole simultaneously, shock wave peak records device 9 is fixed on framework 1.
Shock wave peak records device 9 comprises lower cover 902, upper rack 903, axle A907, spring A905, spring B 906 and lower tooth bar 904; Spring A906 is placed on lower cover 902, and lower tooth bar 904 is placed on spring A906; Upper rack 903 and spring B are through on described axle A907, and axle A907 two ends are fixed by nut and lower cover 902, and spring B 905 two ends abut lower cover 902 and upper rack 903; Upper rack 903 is placed on lower tooth bar 904.
Upper cover 901 to be covered on lower cover 902 and to be connected by bolt and nut with lower cover 902.
When shock wave is impacted by cap bore 908, upper rack 903 can press against lower tooth bar 904 and be moved to the left, and when shock wave disappears, upper rack 903 descends tooth bar 904 to form displacement relatively, and card is to a certain teeth groove 914 place.Record shock wave peak value, the teeth groove 914 only needing numerical digit to move past number, teeth groove 914 number is equivalent to the rank of shock wave.
Back out bolt and nut, loosen upper cover 901, upper rack 903 being returned to initial position can carry out record again.
Claims (9)
1. bilateral shock-wave resistant air vent valve, comprises valve body and spool, and valve body forms valve body framework by protecgulum, bonnet, Liang Jia and Liang Yi, it is characterized in that, described valve body is provided with hole, the through protecgulum in described hole and bonnet;
Described spool to be placed in described hole and can translation in described hole,
Also comprise resetting means, described resetting means connects described valve body and described spool respectively,
Under normal ventilation condition, described spool is in the middle part in described hole by the active force of described resetting means, and the air of described bilateral shock-wave resistant air vent valve both sides can by vent passages convection current,
When described in blast impulse wave impact during spool, the stressed setting value exceeding described resetting means of described spool in shock wave territory, described spool moves to the side in described hole, until close vent passages.
2. bilateral shock-wave resistant air vent valve according to claim 1, is characterized in that, described resetting means is stage clip, and described stage clip is arranged at the both sides of described spool, and described spool is connected with described valve body by described stage clip.
3. bilateral shock-wave resistant air vent valve according to claim 2, is characterized in that, also comprises axle, and described stage clip is through on axle, and described spool is provided with through hole, and described axle is connected with valve body through described through hole.
4. the bilateral shock-wave resistant air vent valve according to any one of claims 1 to 3, it is characterized in that, described valve body also comprises the right baffle-plate and right baffle plate that are respectively in longitudinal centre line both sides, described hole, and described right baffle-plate and described right baffle plate are positioned at valve body framework and are fixed on valve body framework.
5. the bilateral shock-wave resistant air vent valve according to any one of claims 1 to 3, is characterized in that, also comprises framework, and described valve body is fixed on described framework, and described framework is used for fixing with building masonry wall.
6. the bilateral shock-wave resistant air vent valve according to any one of claims 1 to 3, is characterized in that, also comprises pad, and described pad is arranged between described spool and stage clip.
7. bilateral shock-wave resistant air vent valve according to claim 5, is characterized in that, is also provided with shock wave peak records device, and described shock wave peak records device is fixed on described framework.
8. bilateral shock-wave resistant air vent valve according to claim 7, is characterized in that, described shock wave peak records device, comprises lower cover, upper rack, axle A, spring A, spring B and lower tooth bar; Described spring A be placed in described under cover, described lower tooth bar is placed on described spring A; Described upper rack and described spring B are through on described axle A, and described axle A two ends and described lower cover are fixed, and described spring B two ends abut described lower cover and described upper rack; Described upper rack is placed on described lower tooth bar.
9. bilateral shock-wave resistant air vent valve according to claim 8, is characterized in that, is also provided with upper cover, described upper cover be covered on described under cover and be detachably fixedly connected with described lower cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210480899.2A CN102927669B (en) | 2012-11-23 | 2012-11-23 | Bilateral shock-wave resistant air vent valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210480899.2A CN102927669B (en) | 2012-11-23 | 2012-11-23 | Bilateral shock-wave resistant air vent valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102927669A CN102927669A (en) | 2013-02-13 |
| CN102927669B true CN102927669B (en) | 2015-05-20 |
Family
ID=47642533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210480899.2A Active CN102927669B (en) | 2012-11-23 | 2012-11-23 | Bilateral shock-wave resistant air vent valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102927669B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370945B (en) * | 2015-11-06 | 2018-02-27 | 江苏爵格工业设备有限公司 | Shock wave resistance valve |
| CN108344142A (en) * | 2018-01-23 | 2018-07-31 | 浙江上风高科专风实业有限公司 | A kind of sector structure shock-wave resistant air vent valve |
| CN113027796B (en) * | 2021-04-26 | 2021-12-31 | 江苏赛夫特防爆电气有限公司 | Large-diameter explosion-proof type axial flow fan for ship |
| CN114226853B (en) * | 2021-12-16 | 2022-11-08 | 浙江上风高科专风实业股份有限公司 | Double-row valve shaft shock wave resistant valve and machining equipment thereof |
| CN117552701A (en) * | 2023-11-10 | 2024-02-13 | 常州华东人防设备有限公司 | Bidirectional wave-absorbing explosion-proof valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB847283A (en) * | 1957-12-11 | 1960-09-07 | English Electric Co Ltd | Improvements in and relating to relief valves |
| GB2203232B (en) * | 1986-11-13 | 1991-01-16 | Colt Int Ltd | Improvements relating to ventilators |
| CN201013994Y (en) * | 2007-03-13 | 2008-01-30 | 辽宁良工阀门厂 | Pressure relief voltage stabilizer |
| KR101102451B1 (en) * | 2009-04-09 | 2012-01-05 | (주)인디고존 | Explosion-proof Valve |
| CN202992294U (en) * | 2012-11-23 | 2013-06-12 | 无锡斐冠工业设备有限公司 | Double-side shock wave resistant vent valve |
-
2012
- 2012-11-23 CN CN201210480899.2A patent/CN102927669B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB847283A (en) * | 1957-12-11 | 1960-09-07 | English Electric Co Ltd | Improvements in and relating to relief valves |
| GB2203232B (en) * | 1986-11-13 | 1991-01-16 | Colt Int Ltd | Improvements relating to ventilators |
| CN201013994Y (en) * | 2007-03-13 | 2008-01-30 | 辽宁良工阀门厂 | Pressure relief voltage stabilizer |
| KR101102451B1 (en) * | 2009-04-09 | 2012-01-05 | (주)인디고존 | Explosion-proof Valve |
| CN202992294U (en) * | 2012-11-23 | 2013-06-12 | 无锡斐冠工业设备有限公司 | Double-side shock wave resistant vent valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102927669A (en) | 2013-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102927669B (en) | Bilateral shock-wave resistant air vent valve | |
| CN202992294U (en) | Double-side shock wave resistant vent valve | |
| CN105370945B (en) | Shock wave resistance valve | |
| CN101931179B (en) | Directional explosion-proof pressure-relieving device for middle-placed cabinet | |
| CA2524372A1 (en) | Crashworthiness structure and method | |
| CN106059486A (en) | Solar photovoltaic junction box | |
| CN103225667B (en) | Adjustable air damper for split Hopkinson pressure bar | |
| WO2011015421A1 (en) | Protection device for an inspection installation | |
| CN105628397B (en) | A kind of protector and means of defence for being used to protect dynamic impulsion equipment | |
| CN210771315U (en) | Valve table box | |
| CN108240493A (en) | Explosion-wave-preventing Ventilating valve and the ventilating system comprising the valve | |
| CN210246077U (en) | Radiating block terminal of shock attenuation | |
| JP2005134369A5 (en) | ||
| CN213741712U (en) | Two-way anti-knock valve with high air volume for differential pressure protection | |
| CN208208819U (en) | A kind of electric car anticollision box | |
| CN217878033U (en) | Thermal imager with heat dissipation function | |
| CN207936427U (en) | A kind of asymmetry runner shock-wave resistant air vent valve | |
| CN208058058U (en) | A kind of chute type shock-wave resistant air vent valve | |
| CN213160144U (en) | Drying machine | |
| CN109687316B (en) | Constant temperature switch cabinet | |
| CN113795117A (en) | Electric automatization control box | |
| CN219902227U (en) | Front end anti-collision structure of fire-fighting inspection robot | |
| CN208581425U (en) | A kind of modularization cabinet | |
| CN205649979U (en) | Pulsaire collector lets out to explode and prevents device that splashes | |
| CN109595971A (en) | A kind of radiator wind deflector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |