CN220748065U - Antiknock shutter and two-way antiknock rainproof shutter - Google Patents

Abstract

The utility model provides an antiknock shutter and a bidirectional antiknock rainproof shutter, comprising: the frame body, two sides of the frame body opposite to each other are provided with a first gas flow surface and a second gas flow surface which are communicated with the outside; the anti-explosion blade assembly is arranged in the frame body and comprises a plurality of anti-explosion blades, the anti-explosion blades are rotatably arranged on one side close to the first gas flow surface, and a first buffer channel capable of changing the flow direction of the impact gas flow is formed between two adjacent anti-explosion blades; the first traction assembly is connected to the outer side of the frame body and used for adjusting the rotation angles of the antiknock blades. The anti-explosion shutter and the bidirectional anti-explosion and rainproof shutter are provided with the anti-explosion blade assembly capable of automatically adjusting the anti-explosion structure according to the intensity of shock waves, and the optimal anti-explosion effect can be realized on the premise of ensuring the maximum ventilation quantity.

Description

Antiknock shutter and two-way antiknock rainproof shutter

Technical Field

The utility model relates to the technical field of shutters, in particular to an antiknock shutter and a bidirectional antiknock rainproof shutter.

Background

The shutter is widely used in daily life and industry as a multifunctional article with rainproof, light blocking and privacy improving functions, but the shutter on the market at present basically has no antiknock performance, so the shutter is not suitable for being arranged in places with explosion hidden danger such as closed environments, closed channels and the like.

In recent years, in order to expand the application range of the shutter, a shutter with an anti-explosion function has been disclosed, for example, CN 217054939U describes an anti-explosion blade with an S-shaped cross section, which is arranged in a row in a window frame, and the anti-explosion shutter can consume and weaken an explosion shock wave through an upturned part and a downturned part of the blade, but an inclined channel exists between the anti-explosion blades arranged in a row, and when explosion occurs, an explosion shock wave which diverges outwards from a certain point is formed, wherein part of the explosion shock wave can be flushed out along a direction parallel to the inclined channel, so that part of the explosion shock wave can penetrate the anti-explosion shutter, and the anti-explosion shutter has a certain anti-explosion function but the effect is not ideal. In addition, there is a shutter with a protection function as shown in CN 215408339U at the present stage, which can alleviate the above problems to some extent, but in such a structure, the relative fixing between the blades, the impact strength that it can withstand depends largely on the strength of the blades, and only can satisfy the daily protection, while when it is subjected to a large impact wave such as explosion, the fast flowing impact air flow forms a vortex with high impact strength and a great pressure difference between the blades, so that it can withstand the impact strength and the application range are limited.

Disclosure of Invention

Therefore, the utility model aims to solve the technical problems of poor antiknock performance and limited application range of the shutter in the prior art and provides the antiknock shutter and the bidirectional antiknock and rainproof shutter.

In order to solve the technical problems, the utility model provides an antiknock shutter, comprising: the device comprises a frame body, wherein two opposite sides of the frame body are provided with a first gas flow surface and a second gas flow surface which are communicated with the outside; the anti-explosion blade assembly is arranged in the frame body and comprises a plurality of anti-explosion blades and a plurality of bending pieces, the anti-explosion blades are rotatably arranged on one side close to the first gas flow surface, and a first buffer channel capable of changing the flow direction of the impact gas flow is formed between two adjacent anti-explosion blades; the first traction assembly is connected to the outer side of the frame body and used for adjusting the rotation angles of the antiknock blades, the bending pieces are arranged on one side close to the second gas flow surface, and the bending pieces correspond to the antiknock blades one by one and form a plurality of second buffer channels capable of changing the flow direction of the impact gas flow again.

In one embodiment of the utility model, the antiknock blades comprise air deflectors extending along three different directions in radiation and limiting plates connected to the tail end of one air deflector, and the limiting plates can be abutted with the air deflectors of the adjacent antiknock blades.

In an embodiment of the present utility model, the antiknock blade assembly further includes an upper blocking blade and a lower blocking blade which are separately disposed at two opposite sides of the frame body along the arrangement direction of the antiknock blades, and the upper blocking blade and the lower blocking blade can be abutted with the antiknock blades.

In one embodiment of the present utility model, the first traction assembly includes a first fixing block, a first connecting rod, a first elastic member and a first transmission plate, where the first transmission plate extends along the arrangement direction of the plurality of antiknock blades and moves along the extension direction of the first transmission plate, the first connecting rod and the first elastic member are connected end to end and are disposed in the same direction as the first transmission plate, the first elastic member is connected to the first transmission plate, the first fixing block is disposed on the frame, and the first connecting rod penetrates through the first fixing block and moves along the extension direction of the first fixing block to adjust the stretching degree of the first elastic member.

In one embodiment of the present utility model, the first connecting rod includes a rod body, an adjusting member and a connecting end, wherein the adjusting member and the connecting end are respectively disposed at two ends of the rod body, the connecting end is connected with the elastic member, and the rod body is movably connected to the fixed block through the adjusting member.

In an embodiment of the present utility model, the first traction assembly further includes a first rotating shaft penetrating through centers of the plurality of antiknock blades, a plurality of first rotating rods rotating synchronously with the plurality of first rotating shafts, and the plurality of first rotating rods are connected to the first transmission plate, respectively, and the plurality of antiknock blades, the plurality of first rotating shafts, the plurality of first rotating rods, and the first transmission plate synchronously move.

In one embodiment of the present utility model, the side surface of the frame body is provided with a plurality of sliding grooves corresponding to the plurality of antiknock blades, the first traction assembly further includes a plurality of sliding blocks corresponding to the plurality of sliding grooves one by one, the plurality of sliding blocks are connected to the first transmission plate, any sliding block penetrates through the sliding grooves to abut against the antiknock blades, and the plurality of antiknock blades, the plurality of sliding blocks and the first transmission plate synchronously move.

In one embodiment of the present utility model, the bending piece is rotatably connected to the second gas flow surface, and a return piece for limiting the rotation angle of the bending piece is connected between any bending piece and the second gas flow surface.

In order to solve the technical problems, the utility model also provides a bidirectional antiknock rainproof shutter, which comprises the antiknock shutter; the shielding blade assembly is arranged on the outer side of the second gas flowing surface and comprises a plurality of shielding blades which are connected with the frame body in a rotating mode and a plurality of second traction assemblies which are connected with the shielding blades, wherein the shielding blades, the bending blades and the frame body between the bending blades extend in a radiation mode along three different directions, a third buffer channel which is communicated with the second buffer channel in a non-linear mode is formed between every two adjacent shielding blades, and the second traction assemblies are connected with the frame body to limit the rotation angles of the shielding blades.

In one embodiment of the utility model, the lower surface of the frame body is obliquely arranged and at least one water outlet is arranged.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

the antiknock shutter and the bidirectional antiknock rainproof shutter are provided with the antiknock blade assembly which can automatically adjust the antiknock structure according to the intensity of shock waves, and can realize the optimal antiknock effect on the premise of ensuring the maximum ventilation quantity; the bidirectional antiknock rainproof shutter has bidirectional antiknock capability to reduce the influence of positive pressure and negative pressure of explosion shock waves on a ventilation channel.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.

FIG. 1 is a schematic perspective view of an antiknock blind according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic view of the internal structure of the antiknock blind of FIG. 1;

FIG. 3 is an enlarged schematic view of the antiknock blind A of FIG. 1;

FIG. 4 is an enlarged schematic view of the antiknock blind B of FIG. 1;

FIG. 5 is a schematic perspective view of an antiknock blind according to another embodiment of the present utility model;

FIG. 6 is an enlarged schematic view of FIG. 5 at C;

FIG. 7 is a schematic view of the internal structure of the antiknock blind of FIG. 5;

FIG. 8 is a schematic illustration of the attachment of the slider and seal of FIG. 5;

fig. 9 is a schematic perspective view of an antiknock blind according to a third embodiment of the present utility model;

fig. 10 is a perspective view of an antiknock blind according to a fourth embodiment of the present utility model;

FIG. 11 is a schematic perspective view of a bi-directional antiknock rain-proof blind of the present utility model;

fig. 12 is a schematic view of the internal structure of the bi-directional antiknock rain shutter of fig. 11.

Description of the specification reference numerals: 100. a frame; 110. a first gas flow face; 120. a second gas flow surface; 121. a vent; 130. a side frame; 131. a chute; 140. an upper surrounding frame; 150. a lower surrounding frame; 151. a water outlet; 200. an antiknock blade assembly; 210. a top baffle; 220. a lower baffle blade; 230. antiknock blades; 231. an air deflector; 232. a limiting plate; 233. a first buffer channel; 240. a first traction assembly; 241. a first fixed block; 242. a first connecting rod; 2421. a first adjustment member; 2422. a connection end; 2423. a rod body; 243. an elastic member; 244. a first rotating shaft; 245. a first rotating lever; 246. a first drive plate; 247. bending the sheet; 2471. a blocking plate; 2472. a return piece; 248. a second buffer channel; 249. a slide block; 2491. a stop portion; 2492. a sliding part; 2493. a seal; 300. a shutter blade assembly; 310. a second traction assembly; 311. a second rotating shaft; 312. a second fixed block; 313. a second connecting rod; 314. a second elastic member; 315. a second rotating lever; 316. a second drive plate; 320. the blades are shielded.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

Example 1

The embodiment provides an antiknock shutter, including: the frame 100, two opposite sides of the frame 100 are provided with a first gas flow surface 110 and a second gas flow surface 120 which are communicated with the outside; the antiknock blade assembly 200, the antiknock blade assembly 200 is connected to the inside of the frame 100, and comprises a plurality of bending pieces 247, a plurality of antiknock blades 230 and a first traction assembly 240, wherein the antiknock blades 230 are rotatably arranged at the inner side of the first gas flow surface 110, a first buffer channel 233 with at least one inflection point is formed between two adjacent antiknock blades 230, the bending pieces 247 are arranged at one side of the second gas flow surface 120 and are not vertically connected to the second gas flow surface 120, the bending pieces 247 are in one-to-one correspondence with the antiknock blades 230 and respectively form a plurality of nonlinear second buffer channels 248, and the first traction assembly 240 is connected to the outer side of the frame 100 to elastically maintain the angles of the antiknock blades 230.

The antiknock shutter of the utility model is provided with the antiknock blade component 200 which can automatically adjust the antiknock structure according to the intensity of the shock wave, and can realize the optimal antiknock effect on the premise of ensuring the maximum ventilation quantity, in particular, the antiknock shutter in the embodiment is in an open state when receiving the impact air flow with lower intensity; when the air flow is impacted with high strength, the air flow is in a closed state.

Referring to fig. 1 and 2, in this embodiment, the antiknock shutter shown in fig. 2 is used as a reference, the frame 100 is a rectangular frame 100 with front and rear sides both communicating with the outside and the remaining four sides being closed, specifically includes two side frames 130 respectively disposed on the left and right sides, an upper surrounding frame 140 and a lower surrounding frame 150 respectively disposed on the upper and lower sides, wherein in this embodiment, a first gas flow surface 110 is disposed on the rear surface and a second gas flow surface 120 is disposed on the front surface, further, in this embodiment, the first gas flow surface 110 is an antiknock surface and is mounted on a mounting surface for preferentially bearing shock waves such as explosion or strong wind, the gas flows from the first gas flow surface 110, and further, a plurality of ventilation openings 121 are disposed on the second gas flow surface 120 at intervals along the height direction. In this embodiment, the plurality of bending pieces 247 and the plurality of antiknock blades 230 are disposed inside the frame 100 and above the corresponding ventilation openings 121, and the first traction assembly 240 is connected to the outside of the frame 100 and can penetrate through the frame 100 to be connected with the plurality of antiknock blades 230.

Referring to fig. 2, the antiknock blades 230 include air deflectors 231 radiating in three different directions and a limiting plate 232 connected to the end of one air deflector 231, and the limiting plate 232 can be abutted against the air deflector 231 of its neighboring antiknock blade 230. In this embodiment, the three air deflectors 231 are arranged in a herringbone manner, wherein an included angle between two adjacent air deflectors 231 forming the first buffer channel 233 is 90 ° and an initial position of the other air deflector 231 is vertical, further, in other embodiments, corresponding effects can be achieved when the included angle between two adjacent air deflectors 231 forming the first buffer channel 233 is 60 ° to 110 °, the extending lengths of the three air deflectors 231 are the same, the limiting plate 232 is arranged at the free end of the air deflector 231 facing the first gas flow surface 110, and the included angle between the limiting plate 232 and the air deflector 231 is 135 ° so as to ensure that the antiknock blade 230 can uniformly rotate and improve the relative matching degree between the limiting plate 232 and the air deflector 231. In this embodiment, when the explosion impact airflow enters the first buffer channel 233 from the first airflow surface 110, the impact airflow forms a vortex when passing through the inflection point, which can slow down and reduce the flow speed of the impact airflow in the first buffer channel 233 by means of the vortex, so as to play a role in buffering the explosion impact wave. Further, in the present embodiment, the relative position of the antiknock blade 230 when not receiving an impact is as shown in fig. 2, and when receiving an impact, the air guide plate 231 provided with the stopper plate 232 receives an impact first, so that the antiknock blade 230 is rotated clockwise.

Referring to fig. 2, the antiknock blade assembly 200 further includes an upper blocking blade 210 and a lower blocking blade 220 respectively disposed on two opposite sides of the frame 100 along the arrangement direction of the antiknock blades 230, and the upper blocking blade 210 and the lower blocking blade 220 can be abutted against the antiknock blades 230. In this embodiment, the upper baffle 210 is perpendicular to the upper enclosure frame 140 and extends vertically downwards, the lower baffle 220 is disposed on the lower enclosure frame 150 and extends vertically upwards, further, with the antiknock shutter shown in fig. 2 as a reference, the upper baffle 210 is disposed between the uppermost antiknock blade 230 and the first gas flow surface 110, when the antiknock blade 230 is impacted and rotates clockwise, the air deflector 231 can abut against the upper baffle 210, correspondingly, the lower baffle 220 is disposed on the left side of the lowest antiknock blade 230, and when the antiknock blade 230 is impacted and rotates clockwise, the lower baffle 220 can abut against the limiting plate 232 of the lowest Fang Kangbao blade 230.

Referring to fig. 3, the first traction assembly 240 includes a first fixing block 241, a first connecting rod 242, a first elastic member 243, and a first driving plate 246, wherein the first driving plate 246 extends along the arrangement direction of the plurality of antiknock blades 230 and moves along the extending direction thereof, the first connecting rod 242 and the first elastic member 243 are connected end to end and are disposed in the same direction as the first driving plate 246, the first elastic member 243 is connected to the first driving plate 246, the first fixing block 241 is disposed on the frame 100, and the first connecting rod 242 penetrates through the first fixing block 241 and moves along the extending direction thereof to adjust the stretching degree of the first elastic member 243. In this embodiment, the first traction assembly 240 is disposed on the side frame 130, the antiknock shutter shown in fig. 1 is used as a reference, the first driving plate 246 is attached to the outer surface of the side frame 130, and the first fixing block 241, the first connecting rod 242 and the first elastic member 243 are sequentially connected from top to bottom, wherein the first fixing block 241 is disposed on the top end of the first driving plate 246 and is fixedly connected with the side frame 130, the first connecting rod 242 and the first elastic member 243 are both disposed on the outer surface of the first driving plate 246, further, the first driving plate 246 is inserted into the first fixing block 241, the first elastic member 243 is fixedly connected with the first driving plate 246, and the first driving plate 246 can drive the first elastic member 243 to move relative to the first connecting rod 242, thereby imparting different stretching degrees to the first elastic member 243.

Referring to fig. 3 and 4, the first connecting rod 242 includes a rod 2423, an adjusting member 2421 and a connecting end 2422 respectively disposed at two ends of the rod 2423, the connecting end 2422 is connected to the elastic member, and the rod 2423 is movably connected to the first fixing block 241 through the adjusting member 2421. In this embodiment, the upper end portion of the first connecting rod 242 is configured as a threaded rod, which is inserted into the first fixing block 241, the adjusting member 2421 is configured as a nut and is located above the first fixing block 241, and is connected with the threaded rod inserted into the upper side of the first fixing block 241, so as to achieve the purpose of adjusting the connection height of the threaded rod, in this embodiment, the lower end of the rod 2423 is configured with a connecting end 2422, and the connecting end 2422 is preferably a hook-shaped element capable of connecting with the first elastic element 243.

Referring to fig. 4, the first traction assembly 240 further includes a first rotating shaft 244 penetrating through the centers of the plurality of antiknock blades 230, a plurality of first rotating rods 245 rotating synchronously with the plurality of first rotating shafts 244, the plurality of first rotating rods 245 being connected to a first driving plate 246, respectively, and the plurality of antiknock blades 230, the plurality of first rotating shafts 244, the plurality of first rotating rods 245 and the first driving plate 246 synchronously moving. In this embodiment, the connection parts of the three air deflectors 231 in the plurality of antiknock blades 230 are respectively penetrated and connected with a plurality of first rotating shafts 244, the plurality of first rotating shafts 244 are respectively connected to the first driving plate 246 through a first rotating rod 245, further, in this embodiment, the first rotating shafts 244 and the corresponding antiknock blades 230 rotate synchronously, the end parts of the first rotating shafts 244 are arranged to be non-circular, correspondingly, one end of the first rotating rod 245 is correspondingly provided with a non-circular connecting hole for the first rotating shafts 244 to penetrate, which is used for ensuring that the antiknock blades 230 can rotate synchronously along with the first rotating shafts 244, and relative slipping does not occur in the rotating process, so as to influence the linking effect, the other end of the plurality of first rotating shafts 245 is rotationally connected to the first driving plate 246, which can change the acting direction of the antiknock blades 230, and convert the rotating force of the first rotating shafts 244 into the force for driving the first driving plate 246 to move along the up-down direction, thereby realizing the following linking process, and the following steps are specifically as follows: firstly, after the first traction assembly 240 is connected with the antiknock blade 230, the tensile force of the first elastic member 243 is preset by adjusting the relative position between the first fixing block 241 and the first connecting rod 242, so as to preset the rotation tensile force of the antiknock blade assembly 200, in this embodiment, specifically, when the first adjusting member 2421 rotates downward, the rod body 2423 moves upward, so as to pull the first elastic member 243 to increase the tensile force thereof, and further, the antiknock blade 230 can rotate under a larger impact force, when the impact air flow enters the first buffer channel 233 and the impact air flow is smaller, the impact force does not exceed the preset tensile force received by the antiknock blade 230, and at this time, the antiknock blade 230 is in a fixed state and can buffer the impact air flow through its own structure, so as to play a role in primary antiknock; when the impact airflow is large, the impact force makes the pressure borne by the antiknock blades 230 exceed the preset tensile force, at this time, the antiknock blades 230 rotate, the antiknock blades 230 at the upper end are propped against the upper baffle blades 210, the antiknock blades 230 at the lower end are propped against the lower baffle blades 220, the middle antiknock blades 230 rotate and then are mutually overlapped, at this time, the antiknock blades 230 seal the first gas flow surface 110 and block the impact airflow from passing through in a mode of being communicated with the outside, so that antiknock and antiknock effects are achieved. In addition, in this embodiment, when two adjacent antiknock blades 230 rotate, the lower air deflector 231 and the upper limiting plate 232 move relatively at the same time, so that the closing distance and time of the antiknock blades 230 can be reduced by one time, and the impact air flow can be reduced to the greatest extent.

In this embodiment, the plurality of bending pieces 247 are all disposed at a fixed angle on the side of the second gas flow surface 120, the bending pieces 247 are disposed opposite to the first buffer channel 233, and when the impact gas flow is discharged from the first buffer channel 233, the impact gas flow enters the second buffer channel 248 enclosed by two adjacent bending pieces 247, so as to change the path of the impact gas flow, thereby further reducing the impact pressure of the impact gas flow and achieving the effect of secondary buffering and antiknock.

Example two

The specific structural arrangement and principle of the bending piece 247, the upper baffle blade 210, the lower baffle blade 220 and the antiknock blade 230 are the same as those in the first embodiment, the arrangement of the fixing block, the connecting rod and the elastic piece is also the same as those in the first embodiment, and the excessive description is not made here, and the elastic limitation on the rotation angle of the antiknock blade 230 is realized by the other structural arrangement of the first traction component 240 in this embodiment, specifically as follows:

referring to fig. 5 to 7, the side frame 130 is provided with a plurality of sliding grooves 131 corresponding to a plurality of antiknock blades 230, the first traction assembly 240 further includes a plurality of sliding blocks 249 corresponding to the sliding grooves 131 one by one, the sliding blocks 249 are connected to the first driving plate 246, any sliding block 249 passes through the sliding grooves 131 to abut against the corresponding antiknock blades 230, and the antiknock blades 230, the sliding blocks 249 and the first driving plate 246 synchronously move. In this embodiment, the antiknock blade 230 is rotatably connected to the side frame 130 through the first rotation shaft 244, the first traction assembly 240 is disposed at a side close to the second gas flow surface 120, any sliding block 249 is matched with the air deflector 231 corresponding to the antiknock blade 230 at a side close to the second gas flow surface 120, specifically, in this embodiment, the sliding chute 131 is a rectangular through hole penetrating through the side frame 130, the sliding block 249 is a protrusion capable of sliding inside the sliding chute 131, specifically, the sliding block includes a stop portion 2491 and a sliding portion 2491 which are vertically connected to each other, further, the sliding portion 2492 is fixedly connected to the first transmission plate 246, the stop portion 2491 is disposed outside the side frame 130 to limit the sliding block 249 in the horizontal direction, and the sliding block 249 has the functions equivalent to the first rotation shaft 244 and the first rotation rod 245 in the first embodiment, specifically: when the antiknock blade 230 is impacted and rotates clockwise, the plurality of air deflectors 231 can correspondingly abut against the plurality of sliding blocks 249 and push the sliding blocks 249 to move upwards along the sliding grooves 131, further, the sliding blocks 249 stretch the first elastic piece 243 and stop when reaching a preset tensile force, so that the limitation of the rotation angle of the antiknock blade 230 is realized, the torsional force of the first rotating shaft 244 can be reduced, and the service life of the antiknock blade 230 is prolonged.

Referring to fig. 8, the first traction assembly 240 further includes a sealing member 2493, where the sealing member 2493 is disposed on the periphery of the sliding block 249, and the attaching chute 131 moves synchronously with the sliding block 249. In this embodiment, since the chute 131 is disposed on the side frame 130, in order to avoid the leakage of the impact air flow from the contact portion between the chute 131 and the slide block 249, the periphery of the slide block 249 is provided with the sealing member 2493, the sealing member 2493 moves synchronously with the slide block 249, and the sealing member 2493 can completely fit to and cover the chute 131, and further, the specific material and shape of the sealing member 2493 are not limited in the present utility model.

Example III

Referring to fig. 9, the bending piece 247 is provided with a blocking plate 2471 perpendicularly connected thereto, and the second buffer passage 248 has at least one inflection point. In this embodiment, a blocking plate 2471 is added on the basis of the first embodiment, any blocking plate 2471 is fixedly connected with the bending piece 247, and when the impact air flow passes through the first buffer channel 233, the flow path of the impact air flow is guided by the first inflection point of the second buffer channel 248 to flow obliquely upwards, and when the impact air flow flows to the connection position of the blocking plate 2471 and the bending piece 247, a buffering vortex is formed again, so that the air flow is buffered again.

Example IV

Referring to fig. 10, the bending piece 247 is rotatably connected to the second gas flow surface 120, and further, a restoring member 2472 for limiting the rotation angle of the bending piece 247 is connected between any bending piece 247 and the second gas flow surface 120. The embodiment increases the rotation angle of the bending piece 247 on the basis of the first embodiment, and the area of the bending piece 247 is not smaller than the area of the ventilation opening 121, and the structure is arranged to enable the impact air flow to be in contact with the bending piece 247 which can rotate after being buffered by the first buffer channel 233, when the impact force of the air flow is still large, the bending piece 247 can rotate clockwise under the impact action, so that the area of the ventilation opening 121 is reduced, even the ventilation opening 121 is closed, the purpose of reducing the outflow of the impact air flow to the greatest extent is achieved, and the best antiknock effect is achieved by the antiknock shutter. The return member 2472 in the present embodiment is preferably a spring connected between the second gas flow surface 120 and the bent piece 247, which can ensure that the vent 121 is always in communication with the outside and maintains the maximum ventilation area when the impact force of the gas flow flowing through the second buffer channel 248 is not large.

Example five

Referring to fig. 11 and 12, the present embodiment provides a bidirectional antiknock rainproof shutter, which uses the antiknock shutter in the first embodiment as a basic mechanism, and adds a shielding blade assembly 300 and a rainproof structure for antiknock on the second gas flow surface 120, specifically: in this embodiment, the lower surface of the frame 100 is inclined and provided with at least one drain outlet 151; the shielding vane assembly 300 is disposed outside the second gas flow surface 120, and includes a plurality of shielding vanes 320 rotatably connected to the frame body 100 and a second traction assembly 310 connected to the plurality of shielding vanes 320, wherein the shielding vanes 320, the bending pieces 247, and the frame body 100 therebetween are radially extended in three different directions, a third buffer channel in non-linear communication with the second buffer channel 248 is formed between two adjacent shielding vanes 320, and the second traction assembly 310 is connected to the frame body 100 to limit the rotation angle of the plurality of shielding vanes 320.

The bidirectional antiknock rainproof shutter in the embodiment has bidirectional antiknock and rainproof functions, so that the antiknock protection function is expanded, and the problem that the service life of the shutter is shortened due to ponding corrosion is avoided.

Referring to fig. 11 and 12, in this embodiment, the shielding blades 320 are rotatably connected to the outer sides of the corresponding bending blades 247, the shielding blades 320, the bending blades 247 and the second gas flow surface 120 can form a herringbone structure identical to that of the antiknock blades 230, further, the area of the shielding blades 320 is not smaller than that of the ventilation openings 121, the enclosed third buffer channel can be combined with the second buffer channel 248 to form a buffer structure identical to that of the first buffer channel 233, the specific buffer principle is described in the first embodiment, and the second traction assembly 310 with the same structure as that of the first traction assembly 240 is not repeated herein, further, the second traction assembly 310 includes a second rotating shaft 311 connected to the shielding blades 320, a second rotating rod 315 connected to the second rotating shafts 311, a second transmission plate 316 connected to the second rotating rods 315, a second fixing block 312 arranged above the second transmission plate 316, a second connecting rod 313 penetrating the second fixing block 312, and a second connecting rod 313 connected to the lower side of the second transmission plate 314 and simultaneously connected to the second transmission plate 314. When the second gas flow surface 120 where the shielding blades 320 are located is used as an explosion-facing surface, similarly, when the shielding blades 320 are subjected to small impact force, the shielding blades 320 keep the largest ventilation area under the action of the second traction assembly 310, and only the third buffering channel is used for buffering, when the shielding blades are subjected to large impact force, the shielding blades 320 can rotate anticlockwise to reduce the area of the ventilation opening 121, and even cover the ventilation opening 121 to completely isolate gas, so that the purpose of high-efficiency explosion prevention is achieved, and in the embodiment, the connection angle between the shielding blades 320 and the bending pieces 247 can be selected according to actual use conditions so as to change the airflow path. In addition, when the explosion shock wave acts on the first gas flow surface 110 in a positive pressure state, the bidirectional antiknock rainproof shutter can buffer or block forward air flow through the plurality of antiknock shutters 230, negative pressure can be formed nearby the shutter after the positive pressure is finished, and the rotatable shielding blades in the bidirectional antiknock rainproof shutter can block negative pressure air flow to reversely pass through the antiknock shutters 230, so that the bidirectional antiknock effect is achieved, and a good protection effect can be achieved on a ventilation channel.

Referring to fig. 11 and 12, the lower peripheral frame 150 extends from the inside of the frame body 100 to the outside and gradually slopes downward, and a drain port 151 is provided on the extending path, and further, the drain port 151 is located near the lower baffle 220. When the shutter is washed by rain, most of rain cannot enter the frame 100 under the combined action of the shielding blades 320 and the antiknock blades 230, and when a small part of rain enters the frame 100, the rain flows along the inclined lower surrounding frame 150 towards the lower shielding blades 220 and is discharged outwards through the water outlet 151, so that the retention of the rain is avoided, the service life of the shutter is further reduced, and further, the specific number and shape of the water outlet 151 are not limited.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims (10)

1. An antiknock blind, characterized in that: comprising the following steps:

the device comprises a frame body, wherein two opposite sides of the frame body are provided with a first gas flow surface and a second gas flow surface which are communicated with the outside;

the anti-explosion blade assembly is arranged in the frame body and comprises a plurality of anti-explosion blades and a plurality of bending pieces, the anti-explosion blades are rotatably arranged on one side close to the first gas flow surface, a first buffer channel capable of changing the flow direction of the impact gas flow is formed between two adjacent anti-explosion blades, the bending pieces are arranged on one side close to the second gas flow surface, and the bending pieces are in one-to-one correspondence with the anti-explosion blades and respectively form a plurality of second buffer channels capable of changing the flow direction of the impact gas flow again;

the first traction assembly is connected to the outer side of the frame body and used for adjusting the rotation angles of the antiknock blades.

2. The antiknock blind according to claim 1, characterized in that: the antiknock blade comprises air deflectors extending along three different directions in a radiation mode and limiting plates connected to the tail ends of the air deflectors, and the limiting plates can be abutted to the air deflectors of the adjacent antiknock blades.

3. The antiknock blind according to claim 1, characterized in that: the anti-knock blade assembly further comprises an upper blocking blade and a lower blocking blade which are respectively arranged on two opposite sides of the frame body along the arrangement direction of the anti-knock blades, and the upper blocking blade and the lower blocking blade can be abutted with the anti-knock blades.

4. The antiknock blind according to claim 1, characterized in that: the first traction assembly comprises a first fixed block, a first connecting rod, a first elastic piece and a first transmission plate, wherein the first transmission plate extends along a plurality of anti-explosion blades in the arrangement direction and moves along the extension direction of the anti-explosion blades, the first connecting rod and the first elastic piece are connected end to end and are arranged in the same direction as the first transmission plate, the first elastic piece is connected with the first transmission plate, the first fixed block is arranged on the frame body, and the first connecting rod penetrates through the first fixed block and moves along the extension direction of the first fixed block so as to adjust the stretching degree of the first elastic piece.

5. The antiknock blind of claim 4, wherein: the first connecting rod comprises a rod body, an adjusting piece and a connecting end, wherein the adjusting piece and the connecting end are respectively arranged at two ends of the rod body, the connecting end is connected with the elastic piece, and the rod body is movably connected with the fixed block through the adjusting piece.

6. The antiknock blind of claim 5, wherein: the first traction assembly further comprises a first rotating shaft penetrating through the centers of the antiknock blades respectively, and a plurality of first rotating rods rotating synchronously along with the first rotating shafts, wherein the first rotating rods are connected to the first transmission plate respectively, and the antiknock blades, the first rotating shafts, the first rotating rods and the first transmission plate synchronously move.

7. The antiknock blind of claim 6, wherein: the side of the frame body is provided with a plurality of sliding grooves corresponding to the plurality of antiknock blades, the first traction assembly further comprises a plurality of sliding blocks corresponding to the sliding grooves one to one, the sliding blocks are connected to the first transmission plate, any sliding blocks penetrate through the sliding grooves to be abutted to the antiknock blades, and the antiknock blades, the sliding blocks and the first transmission plate synchronously move.

8. The antiknock blind according to claim 1, characterized in that: the bending piece is rotationally connected to the second gas flow surface, and a return piece limiting the rotation angle of the bending piece is connected between any bending piece and the second gas flow surface.

9. A bidirectional antiknock rainproof shutter is characterized in that: comprising an antiknock shutter according to any one of claims 1 to 8;

the shielding blade assembly is arranged on the outer side of the second gas flowing surface and comprises a plurality of shielding blades which are connected with the frame body in a rotating mode and a plurality of second traction assemblies which are connected with the shielding blades, wherein the shielding blades, the bending blades and the frame body between the bending blades extend in a radiation mode along three different directions, a third buffer channel which is communicated with the second buffer channel in a non-linear mode is formed between every two adjacent shielding blades, and the second traction assemblies are connected with the frame body to limit the rotation angles of the shielding blades.

10. The bi-directional antiknock rain-proof blind according to claim 9, wherein: the lower surface of the frame body is obliquely arranged and is provided with at least one water outlet.