CN209686642U - A kind of open explosion venting device for building - Google Patents
A kind of open explosion venting device for building Download PDFInfo
- Publication number
- CN209686642U CN209686642U CN201920301605.2U CN201920301605U CN209686642U CN 209686642 U CN209686642 U CN 209686642U CN 201920301605 U CN201920301605 U CN 201920301605U CN 209686642 U CN209686642 U CN 209686642U
- Authority
- CN
- China
- Prior art keywords
- venting
- dust explosion
- explosion
- wallboard
- dust
- 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.)
- Expired - Fee Related
Links
- 238000004880 explosion Methods 0.000 title claims abstract description 229
- 238000013022 venting Methods 0.000 title claims abstract description 220
- 239000000428 dust Substances 0.000 claims abstract description 198
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 9
- 238000004140 cleaning Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010008190 Cerebrovascular accident Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- WABPQHHGFIMREM-IGMARMGPSA-N lead-207 Chemical compound [207Pb] WABPQHHGFIMREM-IGMARMGPSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The utility model discloses a kind of open explosion venting devices for building, including the first venting of dust explosion wallboard, second venting of dust explosion wallboard and venting of dust explosion node, the first venting of dust explosion wallboard is equipped with the first venting of dust explosion row's needle close to one section of the concrete frame beam, the second venting of dust explosion wallboard is equipped with the second venting of dust explosion row's needle close to one section of the ground, the first venting of dust explosion wallboard is connect by the first venting of dust explosion power seat with the concrete frame beam, the second venting of dust explosion wallboard is connect by the second venting of dust explosion power seat with the ground, the first venting of dust explosion power seat is connect by the first pressure release part with the first venting of dust explosion wallboard, the second venting of dust explosion power seat is connect by the second pressure release part with the second venting of dust explosion wallboard, the explosion-proof pressure of the first pressure release part and the second pressure release part can quantify to adjust.The utility model can effectively reduce the extent of the destruction and derivative secondary disaster that explosion generates wall, reduce the cost that maintenance is replaced and simultaneously prolong the service life.
Description
Technical field
The utility model belongs to the technical field of safety protection equipment of building, more particularly, to a kind of opening for building
Put formula explosion venting device.
Background technique
For having the workshop of hidden peril of explosion, such as chemical factory, boiler factory and pharmaceutical factory, due to specific production technology or
Storage material may leak out imflammable gas or dust in workshop, can explode under certain condition and generate powerful rush
Blast is hit, building and surrounding property is destroyed, causes huge economic loss and casualties.In order to reduce in the state of accident
To the extent of the destruction of fabric structure, what is generallyd use is venting of dust explosion wall system.Wherein, venting of dust explosion wall system passes through venting of dust explosion accessory or dress
It sets, wall is made to open and release stress, be to increase building safety to control the generation of explosion or extent of the destruction is made to reach minimum
Major way.
There are two main classes for venting of dust explosion wall system in the prior art: one kind is using the fixed light steel class wall of special venting of dust explosion bolt
Plate keeps wallboard de- when the pressure acted on wallboard under accident condition reaches certain value by the effect of venting of dust explosion spacer for bolt
It falls, achievees the purpose that pressure release, the main problem of this configuration is under the action of the shake of windy area apoplexy, due to venting of dust explosion spiral shell
The limited strength of bolt gasket and be easy nature loosen and fall off, need periodic maintenance to replace, bolt cost and maintenance cost are higher,
And the reliability of building normal use is affected;Another kind of is the maintenance wall that building is done using fragile material, works as thing
Therefore the pressure acted on wallboard under state, when reaching certain value, broken by wallboard achievees the purpose that pressure release, this construction
The main problem of mode is the heading for a large amount of fragments that explosive damage generates in the state of accident and splashes down range and cannot get
Effective control, object of easily hurting sb.'s feelings.
Utility model content
The purpose of this utility model is to provide a kind of open explosion venting devices for building, can effectively reduce explosion
The extent of the destruction generate to wall and derivative secondary disaster reduce the cost of maintenance replacement and prolong the service life.
A kind of open explosion venting device for building provided by the embodiment of the utility model, including with outer concrete frame
It sets a roof beam in place the first venting of dust explosion wallboard of connection, is fixed on the second venting of dust explosion wallboard on ground and is set to the first venting of dust explosion wallboard and
Venting of dust explosion node between two venting of dust explosion wallboards, wherein one section installation of the first venting of dust explosion wallboard close to the concrete frame beam
There is the first venting of dust explosion to arrange needle, the second venting of dust explosion wallboard is equipped with the second venting of dust explosion row's needle close to one section of the ground, and described first
Venting of dust explosion wallboard is fixedly connected by the first venting of dust explosion power seat with the concrete frame beam, and the second venting of dust explosion wallboard is let out by second
Quick-fried power seat is fixedly connected with the ground, and the first venting of dust explosion power seat is located at by the first pressure release part and the first venting of dust explosion wallboard
Indoor side connection, the second venting of dust explosion power seat are located at indoor side by the second pressure release part and the second venting of dust explosion wallboard
The explosion-proof pressure of connection, the first pressure release part and the second pressure release part can quantify to adjust.
Further, the first pressure release part includes the first pressure release power for running through and being fixed on the first venting of dust explosion wallboard
The first pressure release power key on the first venting of dust explosion power seat is locked and is fixed on, the second pressure release part includes running through and being fixed on institute
State the on the second venting of dust explosion wallboard second the second pressure release power key letting out Prssure lock and being fixed on the second venting of dust explosion power seat.
Further, the open explosion venting device for building further includes the first traction fixing bolt, the first venting of dust explosion
Draught line and the first venting of dust explosion fixed expansion bolt, wherein the first traction fixing bolt is fixed on the first venting of dust explosion wallboard
In, the first venting of dust explosion fixed expansion bolt is fixed on indoor ground, and the first venting of dust explosion draught line is connected to described first
It draws between fixing bolt and the first venting of dust explosion fixed expansion bolt.
Further, the open explosion venting device for building further includes the second traction fixing bolt, the second venting of dust explosion
Draught line and the second venting of dust explosion fixed expansion bolt, wherein the second traction fixing bolt is fixed on the second venting of dust explosion wallboard
In, the second venting of dust explosion fixed expansion bolt is fixed on indoor ground, and the second venting of dust explosion draught line is connected to described second
It draws between fixing bolt and the second venting of dust explosion fixed expansion bolt.
Further, the first venting of dust explosion row's needle and the second venting of dust explosion row's needle are Z-type row's needle.
Further, the first venting of dust explosion power seat and the second venting of dust explosion power seat are all set in indoor and are Z-type venting of dust explosion power seat.
Further, the bevel edge side of the Z-type venting of dust explosion power seat is set as arc-shaped.
Further, the first venting of dust explosion wallboard and the second venting of dust explosion wallboard respectively include external pressure template, interior contour plate and fill out
Fill the fireproof and heat-insulating material between the external pressure template and interior contour plate.
Further, the weight of the first venting of dust explosion wallboard and the second venting of dust explosion wallboard is not more than 60 kg/m2。
In conclusion the utility model is equipped in the first venting of dust explosion wallboard close to one section of the concrete frame beam
First venting of dust explosion arranges needle, and the second venting of dust explosion wallboard is equipped with the second venting of dust explosion row's needle close to one section of the ground, and described first lets out
Quick-fried wallboard is fixedly connected by the first venting of dust explosion power seat with the concrete frame beam, and the second venting of dust explosion wallboard passes through the second venting of dust explosion
Power seat is fixedly connected with the ground, and the first venting of dust explosion power seat is located at room by the first pressure release part and the first venting of dust explosion wallboard
Interior side connection, the second venting of dust explosion power seat are located at indoor side company by the second pressure release part and the second venting of dust explosion wallboard
It connects, the explosion-proof pressure of the first pressure release part and the second pressure release part can quantify to adjust.It so, it is possible to effectively reduce explosion to wall
The extent of the destruction and derivative secondary disaster that body generates reduce the cost of maintenance replacement and prolong the service life.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram of open explosion venting device for building provided by the embodiment of the utility model.
Icon:
First venting of dust explosion wallboard 100;Second venting of dust explosion wallboard 200;Venting of dust explosion node 300;Concrete frame beam 400;
Ground 500;First venting of dust explosion arranges needle 101;First venting of dust explosion power seat 102;First pressure release part 103;
First lets out Prssure lock 104;First pressure release power key 105;First traction fixing bolt 106;First venting of dust explosion draught line
107;
First venting of dust explosion fixed expansion bolt 108;Second venting of dust explosion arranges needle 201;Second venting of dust explosion power seat 202;Second pressure release part
203;
Second lets out Prssure lock 204;Second pressure release power key 205;Second traction fixing bolt 206;Second venting of dust explosion draught line
207;
Second venting of dust explosion fixed expansion bolt 208.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Apply example, those of ordinary skill in the art's every other embodiment obtained without creative labor, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile it is practical new at this
In the description of type, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relatively important
Property.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral;It can be
Mechanical connection, is also possible to be electrically connected;It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
As shown in Figure 1, a kind of open explosion venting device for building provided by the embodiment of the utility model may include
First venting of dust explosion wallboard 100, the second venting of dust explosion wallboard 200 and venting of dust explosion node 300.Wherein, the first venting of dust explosion wallboard 100 and outside
Concrete frame beam 400 connects, and the second venting of dust explosion wallboard 200 is fixed on ground 500, and the venting of dust explosion node 300 is set to
Between the first venting of dust explosion wallboard 100 and the second venting of dust explosion wallboard 200.The i.e. described first venting of dust explosion wallboard 100 and the second venting of dust explosion wallboard
200 can open and not interfere with each other independently of each other, effectively reduce the cost of maintenance replacement and prolong the service life.
Preferably, the first venting of dust explosion wallboard 100 and the second venting of dust explosion wallboard 200 respectively include external pressure template, interior contour plate
And the fireproof and heat-insulating material being filled between the external pressure template and interior contour plate.When implementation, 100 He of the first venting of dust explosion wallboard
The weight of second venting of dust explosion wallboard 200 is not more than 60 kg/m2。
In the present embodiment, the first venting of dust explosion wallboard 100 is equipped with first close to one section of the concrete frame beam 400
Venting of dust explosion arranges needle 101, and the second venting of dust explosion wallboard 200 is equipped with the second venting of dust explosion row's needle 201 close to one section of the ground 500.Its
In, the first venting of dust explosion row's needle 101 and the second venting of dust explosion row's needle 201 are Z-type row's needle.In the present embodiment, by first venting of dust explosion
Row's needle 101 and the second venting of dust explosion row's needle 201, which are set as Z-type row's needle, can effectively reduce extent of the destruction that explosion generates wall and spread out
Raw secondary disaster etc..
In addition, the first venting of dust explosion wallboard 100 is fixed by the first venting of dust explosion power seat 102 and the concrete frame beam 400
Connection, the second venting of dust explosion wallboard 200 are fixedly connected by the second venting of dust explosion power seat 202 with the ground 500.Wherein, described
One venting of dust explosion power seat 102 is located at indoor side with the first venting of dust explosion wallboard 100 and is connect by the first pressure release part 103, and described the
Two venting of dust explosion power seats 202 are located at indoor side with the second venting of dust explosion wallboard 200 by the second pressure release part 203 and connect.This implementation
In example, the explosion-proof pressure of the first pressure release part 103 and the second pressure release part 203 can quantify to adjust.Based on first venting of dust explosion
The explosion-proof pressure that wallboard 100, the second venting of dust explosion wallboard 200 and venting of dust explosion node 300 construct can quantify the open explosion venting device adjusted,
It can effectively solve the problem that venting of dust explosion problem and reduce the cost of maintenance replacement.
Further, the first venting of dust explosion power seat 102 and the second venting of dust explosion power seat 202 are all set in indoor and are Z-type venting of dust explosion
Power seat.The bevel edge side of the Z-type venting of dust explosion power seat is set as arc-shaped.Wherein, the arc-shaped cleaning that can be convenient for dust,
To keep the cleaning etc. of indoor environment.
Specifically, the first pressure release part 103 includes that first for running through and being fixed on the first venting of dust explosion wallboard 100 lets out
Prssure lock 104 and the first pressure release power key 105 being fixed on the first venting of dust explosion power seat 102.The second pressure release part 203 wraps
Second for running through and being fixed on the second venting of dust explosion wallboard 200 is included to let out Prssure lock 204 and be fixed on the second venting of dust explosion power
The second pressure release power key 205 on seat 202.Prssure lock 104 and second can be let out by setting described first let out the thickness of Prssure lock 204
Degree and shape and the quantity for changing washer can quantify to adjust the explosion-proof of the first pressure release part 103 and the second pressure release part 203
Pressure.
In the present embodiment, the open explosion venting device for building further includes the first traction fixing bolt 106, first
Venting of dust explosion draught line 107 and the first venting of dust explosion fixed expansion bolt 108.Wherein, the first traction fixing bolt 106 is fixed on described
In first venting of dust explosion wallboard 100, the first venting of dust explosion fixed expansion bolt 108 is fixed on indoor ground 500, first venting of dust explosion
Draught line 107 is connected between the first traction fixing bolt 106 and the first venting of dust explosion fixed expansion bolt 108.It so, it is possible
Effectively reduce the extent of the destruction and derivative secondary disaster that explosion generates the first venting of dust explosion wallboard 100.
In addition, the open explosion venting device for building further includes that the second traction fixing bolt 206, the second venting of dust explosion are led
Lead 207 and the second venting of dust explosion fixed expansion bolt 208.Wherein, the second traction fixing bolt 206 is fixed on described second and lets out
In quick-fried wallboard 200, the second venting of dust explosion fixed expansion bolt 208 is fixed on indoor ground 500, the second venting of dust explosion draught line
207 are connected between the second traction fixing bolt 206 and the second venting of dust explosion fixed expansion bolt 208.It so, it is possible effectively to subtract
The extent of the destruction and derivative secondary disaster that few explosion generates the second venting of dust explosion wallboard 200.
In conclusion the utility model is in the first venting of dust explosion wallboard 100 close to one section of the concrete frame beam 400
First venting of dust explosion row's needle 101 is installed, the second venting of dust explosion wallboard 200 is equipped with the second venting of dust explosion close to one section of the ground 500
Needle 201 is arranged, the first venting of dust explosion wallboard 100 is fixedly connected by the first venting of dust explosion power seat 102 with the concrete frame beam 400,
The second venting of dust explosion wallboard 200 is fixedly connected by the second venting of dust explosion power seat 202 with the ground 500, the first venting of dust explosion power seat
102, which are located at indoor side with the first venting of dust explosion wallboard 100 by the first pressure release part 103, connect, the second venting of dust explosion power seat
202, which are located at indoor side with the second venting of dust explosion wallboard 200 by the second pressure release part 203, connect, the first pressure release part 103
It can quantify to adjust with the explosion-proof pressure of the second pressure release part 203.It so, it is possible to effectively reduce the destruction journey that explosion generates wall
Degree and derivative secondary disaster reduce the cost of maintenance replacement and prolong the service life.
Above description is merely a prefered embodiment of the utility model, is not intended to limit the utility model, for
For those skilled in the art, various modifications and changes may be made to the present invention.All spirit and original in the utility model
Within then, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of open explosion venting device for building, which is characterized in that including connect with outer concrete Vierendeel girder
One venting of dust explosion wallboard, be fixed on the second venting of dust explosion wallboard on ground and be set to the first venting of dust explosion wallboard and the second venting of dust explosion wallboard it
Between venting of dust explosion node, wherein the first venting of dust explosion wallboard is equipped with the first venting of dust explosion row close to one section of the concrete frame beam
Needle, the second venting of dust explosion wallboard are equipped with the second venting of dust explosion row's needle close to one section of the ground, and the first venting of dust explosion wallboard passes through
First venting of dust explosion power seat is fixedly connected with the concrete frame beam, the second venting of dust explosion wallboard by the second venting of dust explosion power seat with it is described
Ground is fixedly connected, and the first venting of dust explosion power seat is located at indoor side company by the first pressure release part and the first venting of dust explosion wallboard
It connecing, the second venting of dust explosion power seat is located at indoor side with the second venting of dust explosion wallboard and is connect by the second pressure release part, and described the
The explosion-proof pressure of one pressure release part and the second pressure release part can quantify to adjust.
2. the open explosion venting device according to claim 1 for building, which is characterized in that the first pressure release part packet
First for running through and being fixed on the first venting of dust explosion wallboard is included to let out Prssure lock and be fixed on the first venting of dust explosion power seat
First pressure release power key, the second pressure release part include second for running through and being fixed on the second venting of dust explosion wallboard let out Prssure lock with
And it is fixed on the second pressure release power key on the second venting of dust explosion power seat.
3. the open explosion venting device according to claim 1 for building, which is characterized in that the opening for building
The formula explosion venting device of putting further includes the first traction fixing bolt, the first venting of dust explosion draught line and the first venting of dust explosion fixed expansion bolt, wherein
The first traction fixing bolt is fixed in the first venting of dust explosion wallboard, and the first venting of dust explosion fixed expansion bolt is fixed on room
Interior ground, the first venting of dust explosion draught line be connected to it is described first traction fixing bolt and the first venting of dust explosion fixed expansion bolt it
Between.
4. the open explosion venting device according to claim 3 for building, which is characterized in that the opening for building
The formula explosion venting device of putting further includes the second traction fixing bolt, the second venting of dust explosion draught line and the second venting of dust explosion fixed expansion bolt, wherein
The second traction fixing bolt is fixed in the second venting of dust explosion wallboard, and the second venting of dust explosion fixed expansion bolt is fixed on room
Interior ground, the second venting of dust explosion draught line be connected to it is described second traction fixing bolt and the second venting of dust explosion fixed expansion bolt it
Between.
5. the open explosion venting device according to claim 1 for building, which is characterized in that first venting of dust explosion arranges needle
It is Z-type row's needle with the second venting of dust explosion row's needle.
6. the open explosion venting device according to claim 1 for building, which is characterized in that the first venting of dust explosion power seat
It is all set in indoor with the second venting of dust explosion power seat and is Z-type venting of dust explosion power seat.
7. the open explosion venting device according to claim 6 for building, which is characterized in that the Z-type venting of dust explosion power seat
Bevel edge side be set as arc-shaped.
8. the open explosion venting device according to claim 1-7 for building, which is characterized in that described first
Venting of dust explosion wallboard and the second venting of dust explosion wallboard respectively include external pressure template, interior contour plate and are filled in the external pressure template and interior contour plate
Between fireproof and heat-insulating material.
9. the open explosion venting device according to claim 8 for building, which is characterized in that the first venting of dust explosion wallboard
It is not more than 60kg/m with the weight of the second venting of dust explosion wallboard2。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201920301605.2U CN209686642U (en) | 2019-03-11 | 2019-03-11 | A kind of open explosion venting device for building |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201920301605.2U CN209686642U (en) | 2019-03-11 | 2019-03-11 | A kind of open explosion venting device for building |
Publications (1)
Publication Number | Publication Date |
---|---|
CN209686642U true CN209686642U (en) | 2019-11-26 |
Family
ID=68604231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201920301605.2U Expired - Fee Related CN209686642U (en) | 2019-03-11 | 2019-03-11 | A kind of open explosion venting device for building |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN209686642U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109779084A (en) * | 2019-03-11 | 2019-05-21 | 河南安筑建筑科技有限公司 | A kind of open explosion venting device for building |
-
2019
- 2019-03-11 CN CN201920301605.2U patent/CN209686642U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109779084A (en) * | 2019-03-11 | 2019-05-21 | 河南安筑建筑科技有限公司 | A kind of open explosion venting device for building |
CN109779084B (en) * | 2019-03-11 | 2024-03-19 | 河南安筑建筑科技有限公司 | Open explosion venting device for building |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN209686642U (en) | A kind of open explosion venting device for building | |
CN203572230U (en) | Heating furnace explosion door | |
CN207863220U (en) | A kind of novel embedded venting of dust explosion wall | |
CN109779084A (en) | A kind of open explosion venting device for building | |
CN105135589A (en) | Air curtain isolating device | |
CN112144932A (en) | A fixed fireproof and anti-explosion blocking structure to protect the high-end valve hall of the converter station | |
CN106122669B (en) | Self-operated type pipe cap and self-operated type pipe cap mounting structure | |
CN211050796U (en) | Fireproof device of intelligent building | |
CN214659765U (en) | Steel fireproof door | |
CN209686643U (en) | A kind of open explosion venting device for toilet | |
CN214170076U (en) | Fixed fire-proof anti-explosion blocking structure for protecting high-end valve hall of convertor station | |
CN210530907U (en) | Anti-deformation outburst prevention air door for coal mine tunnel | |
CN203536884U (en) | Fireproof groove box for cables | |
CN213654889U (en) | Utility tunnel long distance interval structure that ventilates | |
CN112482956A (en) | Steel fireproof door | |
CN218761459U (en) | Fire-proof valve for tunnel fire-fighting ventilation | |
CN218205076U (en) | Stone material curtain entrance to a cave department fire prevention block structure | |
CN212388823U (en) | Explosion venting roof suitable for tobacco redrying combined workshop | |
CN204791949U (en) | Natural draft sound arrester | |
CN104001608A (en) | Sound insulation device suitable for coal mill and method | |
CN210195606U (en) | Rubber tube type explosion-proof wave valve | |
CN217679771U (en) | Mesoporous composite fireproof and thermal insulation sealing structure | |
CN211422336U (en) | Electric control outward-opening lower-suspension smoke exhaust window | |
CN214425434U (en) | High-efficiency flame-retardant fireproof PVC pipeline | |
CN210978638U (en) | Explosion-proof automatic check valve for ventilating duct of inflammable and explosive clean workshop |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191126 |