Clean room ventilation structure capable of preventing dust

Abstract

The application relates to the technical field of dustproof ventilation, and particularly discloses a dustproof ventilation structure for a clean room, which comprises a supporting platform, a filtering structure, an air outlet pipeline, a flow interruption structure and a cleaning device. The supporting platform can support the whole device to stably operate. The filtering structure is arranged at the rear end of the top surface of the supporting platform and close to the center. The air outlet pipeline is arranged at the air outlet at the bottom of the right end of the filtering structure, and the bottom of the filtering structure is fixedly connected with the supporting platform. The flow interruption structure is arranged at the front end of the top surface of the supporting platform and close to the center. The top of the flow interruption structure extends to the top center of the air outlet pipeline, and the flow interruption structure can interrupt the flow of the air outlet pipeline. The cleaning device is arranged at a corner of the left end of the top surface of the supporting platform. The device can interrupt the input of pollution sources by mechanical flow interruption and impurity collection of the flow interruption structure, and reduce the internal dust sources generated by dust accumulation of filter materials by active dust cleaning of the cleaning device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dustproof ventilation, in particular to a dustproof ventilation structure for clean room. BACKGROUND

[0002] In the existing clean room ventilation system, in order to prevent unfiltered air from flowing back into the filtering structure such as high efficiency filter, filter cartridge, etc. to cause pollution, a one-way valve is usually arranged in the air outlet pipeline. However, the conventional one-way valve has significant defects in actual application: during the closing process of the valve disc and the valve seat of the one-way valve, foreign matters such as dust, mechanical wear debris, human hair, etc. in the air are easy to be stuck in the gap, resulting in sealing failure. Once the sealing is not tight, unfiltered dust-containing air will flow back into the inside of the filtering structure, polluting the filtered clean air source, and further damaging the air quality of the clean room, affecting the stability of production or experiment.

[0003] At the same time, the filter cartridge in the filtering structure will gradually accumulate dust and other particulate matters on the surface during long-term use. If these accumulations are not cleaned in time, on the one hand, it will cause the air permeability of the filter material to decrease, reducing the filtering efficiency; on the other hand, the accumulated particulate matters may fall off due to air flow disturbance, enter the air outlet pipeline with clean air, and finally enter the clean room to form secondary pollution and become a new dust source. In the existing technology, the cleaning of the filter material mainly relies on manual regular disassembly and cleaning or replacement, which is not only cumbersome to operate but also difficult to realize real-time and automatic cleaning, and cannot meet the needs of continuous and stable operation of the clean room. SUMMARY

[0004] The present application aims to provide a dustproof ventilation structure for clean room to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a dustproof ventilation structure for clean room, comprising: a support platform, a filtering structure, an air outlet pipeline, a flow interruption structure and a cleaning device, the support platform can support the stable operation of the whole device; the filtering structure is arranged at the rear end near the center of the top surface of the support platform; the air outlet pipeline is arranged at the air outlet of the bottom right end of the filtering structure, and the bottom of the filtering structure is connected and fixed with the support platform; the flow interruption structure is arranged at the front end near the center of the top surface of the support platform, the top of the flow interruption structure extends into the top center of the air outlet pipeline, and the flow interruption structure can interrupt the flow of the air outlet pipeline; the cleaning device is arranged at one corner of the left end of the top surface of the support platform, and the cleaning device can cooperate with the flow interruption structure, so that the cleaning device can clean the filter cartridge in the air outlet pipeline.

[0006] Preferably, in order to prevent the air in the air outlet pipeline from flowing back, the cut-off structure comprises: a first support rod, a first support plate, a concave plate, a first drive assembly, a cut-off plate, a long plate, a moving groove, a groove, a collection groove, a collection barrel and a bottom cover, the first support rod is arranged at the front end of the top surface of the support platform near the center; the first support plate is arranged at the top end of the first support rod; the concave plate is arranged at the front end of the top surface of the first support plate; the first drive assembly is arranged in the concave plate; the cut-off plate is arranged at the moving end of the first drive assembly; the long plate is arranged in the center of the top of the air outlet pipeline; the collection barrel is arranged at one end of the bottom surface of the long plate; and the bottom cover is sleeved with the outer wall of the bottom end of the collection barrel.

[0007] Preferably, one end of the long plate is provided with a moving groove, the cut-off plate is embedded in one end of the long plate, and the cut-off plate can move along the limit of the long plate, and the outer wall of the long plate is provided with a groove on both sides, and the two grooves are respectively left and right through to the inner cavity of the air outlet pipeline.

[0008] Preferably, one end of the bottom of the moving groove is provided with an up-and-down through collection groove, and the inner cavity of the collection barrel is through to the collection groove.

[0009] Preferably, in order to cut off and close the air outlet pipeline, the first drive assembly comprises: an electric push rod, a rack, a gear, a contact rod and a contact inductor, the electric push rod is arranged in the concave plate; the rack is arranged at the pushing end of the electric push rod, and one end of the rack is fixedly connected with the center of one end of the cut-off plate; the gear is arranged at the rear end of the top surface of the first support plate near the center through the first bearing, and the gear is meshed with the rack; the contact rod is arranged on one side of the gear teeth of the outer wall of the gear; and the contact inductor is arranged at the rear end of the top surface of the first support plate near the left corner.

[0010] Preferably, the electric push rod drives the rack to rotate the gear, and when the cut-off plate collides and stops in the moving groove, the contact rod is rotated to 90 degrees and contacts the contact inductor.

[0011] Preferably, in order to clean the filter barrel in the filtering structure, the cleaning device comprises: a second support rod, a second support plate, a second drive assembly and a rubber hitting head, the second support rod is arranged at the left corner of the top surface of the support platform; the second support plate is arranged at the top end of the second support rod; the second drive assembly is arranged on the top surface of the second support plate; and the rubber hitting head is arranged at the moving end of the second drive assembly, and the rubber hitting head is in contact with the left center of the outer wall of the filtering structure.

[0012] Preferably, in order to generate vibration by hitting the filter structure shell, the second driving assembly comprises a DC motor, a rotating block, a lever, a first connecting rod, a cylindrical block, a second connecting rod, a first joint, a second joint, a moving rod, a pressing plate, a limiting seat and a spring, the DC motor is arranged at one end of the bottom surface of the second supporting plate and extends upward through the second supporting plate, the DC motor is electrically connected with the contact sensor, the rotating block is arranged at the rotating end of the DC motor and has a certain distance from the top surface of the second supporting plate, the bottom of the outer wall of the rotating block is sleeved with a second bearing, the number of the levers is two, which are symmetrically arranged at the two ends of the top of the outer wall of the rotating block, the first connecting rod is arranged at one side of the outer wall of the second bearing, the cylindrical block is arranged at one end of the top surface of the first connecting rod, the second connecting rod is arranged at the other end of the top surface of the first connecting rod through a third bearing and is higher than the rotating block and has a certain distance, the first joint is arranged at one end of the second connecting rod, the second joint is sleeved in the first joint and can rotate in the first joint, the moving rod is arranged at one end of the outer wall of the second joint, the pressing plate is arranged at one end of the moving rod and is fixedly connected with the rubber hitting head at the center of one side of the outer wall of the pressing plate, the number of the limiting seats is two, one of the limiting seats is sleeved at the other end of the moving rod and the bottom surface of the limiting seat sleeved on the moving rod is fixedly connected with the top surface of the second supporting plate, the other limiting seat is arranged at the right end of the top surface of the second supporting plate, the outer wall of the limiting seat arranged at the right end of the top surface of the second supporting plate is in contact with one side of the outer wall of the pressing plate, and one end of the rubber hitting head is sleeved in the other limiting seat, and the spring ring is sleeved on the outer wall of the moving rod and the two ends of the spring are respectively in contact with one side of the outer wall of one limiting seat and the other side of the outer wall of the pressing plate.

[0013] Preferably, the DC motor drives the rotating block to rotate, one lever drives the cylindrical block to pull the second connecting rod and the moving rod, the pressing plate extrudes the spring to generate deformation, and when the cylindrical block moves to more than 180 degrees, the rubber hitting head is driven by the elasticity of the spring to hit the left center of the outer wall of the filter structure.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1. The traditional one-way valve is easy to cause sealing failure due to the blockage of solid particles, human hair and other foreign matters in the closing process, thereby causing the unfiltered air to flow back into the filtering structure and pollute the clean air source; the flow interruption structure is used to replace the traditional one-way valve, when the flow interruption plate moves along the moving groove to realize flow interruption and closure, it can directly push the solid particles, mechanical wear debris and other matters accumulated in the groove into the collecting barrel through the collecting groove to actively remove the impurities, and can form a cutting action on the blocked foreign matters through its own movement to avoid the sealing failure caused by the blockage of foreign matters; the design blocks the path of the unclean air backflow from the root, ensures that the air output from the filtering structure is always clean, and provides a reliable dustproof barrier for the clean room.

[0016] 2. The filter surface of the filtering structure is easy to accumulate dust due to long-term use, if not cleaned in time, the filtering efficiency will be reduced, and even the dust will fall into the air outlet pipeline to become a potential dust source of the clean room; the flow interruption structure and the cleaning device are linked in the application: when the flow interruption plate completes the flow interruption and closure and collides, the contact rod triggers the contact inductor, and the DC motor drives the rubber hitting head to hit the outer wall of the filtering structure at high frequency; through the vibration action, the dust attached to the surface of the filter can be shaken off to the dust collecting area at the bottom of the filtering structure, so that the dust does not enter the clean room with the airflow; the active cleaning function ensures the long-term high-efficiency filtering capacity of the filtering structure, reduces the secondary pollution risk caused by the dust accumulation of the filter, and continuously ensures the air cleanliness entering the clean room. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the application;

[0018] Figure 2 It is a position structure schematic diagram of the flow interruption structure of the application;

[0019] Figure 3 It is an enlarged view of A in Figure 2

[0020] Figure 4 It is a long plate structure schematic diagram of the flow interruption structure of the application;

[0021] Figure 5 It is a long plate cross section and long plate connecting part exploded structure schematic diagram of the flow interruption structure of the application;

[0022] Figure 6 It is a position structure schematic diagram of the cleaning device of the application;

[0023] Figure 7 It is an enlarged view of B in Figure 6

[0024] Figure 8 It is a left end exploded structure schematic diagram of the second driving assembly of the cleaning device of the application; ​​

[0025] Figure 9 Figure 2 is a schematic view of the second driving assembly of the cleaning device according to the present application.

[0026] In the figure: 1, support platform; 2, filter structure; 3, air outlet pipeline; 4, flow interruption structure; 5, cleaning device; 41, first support rod; 42, first support plate; 43, concave plate; 44, electric push rod; 45, rack; 46, gear; 47, contact rod; 48, contact sensor; 49, flow interruption plate; 410, long plate; 411, moving groove; 412, concave groove; 413, collecting groove; 414, collecting barrel; 415, bottom cover; 51, second support rod; 52, second support plate; 53, DC motor; 54, rotating block; 55, lever; 56, first connecting rod; 57, cylindrical block; 58, second connecting rod; 59, first joint; 510, second joint; 511, moving rod; 512, extrusion plate; 513, limiting seat; 514, spring; 515, rubber hitting head. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0028] Please refer to Figures 1-9The application provides a clean room ventilation structure capable of preventing dust, which comprises a support platform 1, a filtering structure 2, an air outlet pipeline 3, a flow interruption structure 4 and a cleaning device 5. The support platform 1 can support the whole device to stably run and is the base plate of the whole device. The filtering structure 2 is arranged at the rear end of the top surface of the support platform 1 close to the center, can filter air to discharge clean air, and can collect solid particles in the air at the bottom of the filtering structure 2. The blowing inlet at the left end of the top surface of the filtering structure 2 is used to be connected with a fan, and the unfiltered air is sent into the filtering structure 2 through the fan. The air outlet pipeline 3 is arranged at the air outlet at the right end bottom of the filtering structure 2, and the bottom of the filtering structure 2 is connected and fixed with the support platform 1. The flow interruption structure 4 is arranged at the front end of the top surface of the support platform 1 close to the center, and the top of the flow interruption structure 4 extends into the top center of the air outlet pipeline 3, and the flow interruption structure 4 can interrupt the air outlet pipeline 3. The flow interruption structure 4 has the same effect as the one-way valve, but the traditional one-way valve may be stuck with solid particles or human hair in the closing process, so that the unclean air appears backflow. The traditional one-way valve cannot be cut when encountering foreign matter, and cannot be handled in an emergency. However, the structure has a cutting action, and can also collect solid particles generated by mechanical parts loss in the air outlet pipeline 3, has a certain cleaning ability, can prevent air backflow, and the blowing end of the air outlet pipeline 3 is connected with a static pressure tank at the top or side of the clean room. The static pressure tank is connected with a plurality of branch pipes to make the clean air enter the clean room. The cleaning device 5 is arranged at a corner at the left end of the top surface of the support platform 1, and the cleaning device 5 can cooperate with the flow interruption structure 4, so that the cleaning device 5 can clean the filter cartridge in the air outlet pipeline 3.

[0029] As a preferred solution, further, as Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, the flow interruption structure 4 comprises: a first support rod 41, a first support plate 42, a concave plate 43, a first drive assembly, a flow interruption plate 49, a long plate 410, a moving groove 411, a concave groove 412, a collection groove 413, a collection barrel 414, and a bottom cover 415. The first support rod 41 is arranged at the front end of the top surface of the support platform 1 near the center, the height of the first support rod 41 can enable the flow interruption plate 49 to be embedded in the moving groove 411, and the first support rod 41 and the first support plate 42 serve to support the top surface connecting component; the first support plate 42 is arranged at the top end of the first support rod 41; the concave plate 43 is arranged at the front end center of the top surface of the first support plate 42, and the concave plate 43 can stably fix the electric push rod 44; the first drive assembly is arranged in the concave plate 43; the flow interruption plate 49 is arranged at the moving end of the first drive assembly, and the flow interruption plate 49 is used for closing the air outlet pipeline 3 to prevent unfiltered air from entering the filter device; the long plate 410 is arranged in the center of the top of the air outlet pipeline 3, one end of the long plate 410 is provided with the moving groove 411, the bottom of the moving groove 411 is used for collecting solid particles or part debris, the bottom of the moving groove 411 is used for collecting solid particles or part debris, the flow interruption plate 49 is embedded in one end of the long plate 410, and the flow interruption plate 49 can be limitedly moved along the long plate 410, the outer wall of the long plate 410 is provided with the concave groove 412 on both sides, and the two concave grooves 412 are respectively and left-right through to the inner cavity of the air outlet pipeline 3, the bottom end of the moving groove 411 is provided with the collection groove 413 which is through up and down, and the collection groove 413 is a collection port for solid particles or part debris; the collection barrel 414 is arranged at one end of the bottom surface of the long plate 410, and the inner cavity of the collection barrel 414 is through to the collection groove 413, the collection barrel 414 is a solid particle or part debris storage collection place, and the bottom end of the collection barrel 414 is hollow for cooperation with the bottom cover 415; the bottom cover 415 is sleeved on the outer wall of the bottom end of the collection barrel 414, and the bottom cover 415 is designed to be twistable to facilitate the cleaning of the staff.

[0030] As a preferred solution, further, as Figure 3 and Figure 4As shown, the first driving assembly comprises: an electric push rod 44, a rack 45, a gear 46, a contact rod 47 and a contact sensor 48. The electric push rod 44 is arranged in the recessed plate 43 and can be extended and retracted in the horizontal direction. The electric push rod 44 is electrically connected with an external control system and can be programmed to set the extension stroke and speed to provide a power source for the whole driving assembly. The rack 45 is arranged at the pushing end of the electric push rod 44. One end of the rack 45 is fixedly connected with the center of one end of the flow breaking plate 49. The two ends of the rack 45 are respectively welded and fixed with the electric push rod 44 and the flow breaking plate 49, and the connection strength can withstand the impact force when the flow breaking plate 49 moves. The gear 46 is arranged at the rear end near the center of the top surface of the first support plate 42 through a first bearing. The gear 46 can rotate with the first bearing. The gear 46 is meshed with the rack 45. The modulus of the gear 46 matches the rack 45. The tooth surface is quenched to improve wear resistance. The contact rod 47 is arranged at one side of the gear teeth on the outer wall of the gear 46. The rack 45 can drive the gear 46 to rotate to make the contact rod 47 rotate by 90 degrees. The contact rod 47 is used to contact the contact sensor 48. When the rack 45 moves linearly, the gear 46 is driven to rotate around the center shaft through the meshing of the gear teeth, thereby driving the contact rod 47 to rotate in a 90-degree sector trajectory. The rotation angle is accurately controlled by the stroke of the rack 45. The contact sensor 48 is arranged at the rear end near the left corner of the top surface of the first support plate 42. The electric push rod 44 drives the rack 45 to make the gear 46 rotate. When the flow breaking plate 49 is stopped and collides in the moving groove 411, the contact rod 47 is rotated to 90 degrees to contact the contact sensor 48. The contact sensor 48 is a power signal source of the DC motor 53.

[0031] As a preferred solution, further as shown in Figure 6 , Figure 7 and Figure 9 , the cleaning device 5 comprises: a second support rod 51, a second support plate 52, a second driving assembly and a rubber hitting head 515. The second support rod 51 is arranged at the left end corner of the top surface of the support platform 1. The second support rod 51 and the second support plate 52 support the top surface connecting component. The second support plate 52 is arranged at the top end of the second support rod 51. The plate surface of the second support plate 52 is quenched to improve the anti-deformation ability and can withstand the high-frequency vibration load generated during the hitting process of the rubber hitting head 515. The second driving assembly is arranged on the top surface of the second support plate 52. The rubber hitting head 515 is arranged at the moving end of the second driving assembly and contacts the left center of the outer wall of the filter structure 2. The rubber hitting head 515 has good elastic deformation ability. When hitting, it can absorb part of the impact force through its own compression deformation to avoid rigid collision and damage to the shell of the filter structure 2. It is especially suitable for components such as filter structures that need to maintain sealing and integrity.

[0032] As a preferred solution, further as shown in Figure 7 ,Figure 8 and Figure 9As shown, the second driving assembly comprises a DC motor 53, a rotating block 54, a lever 55, a first connecting rod 56, a cylindrical block 57, a second connecting rod 58, a first joint 59, a second joint 510, a moving rod 511, a pressing plate 512, a limiting seat 513 and a spring 514. The DC motor 53 is arranged at one end of the bottom surface of the second supporting plate 52, and the DC motor 53 extends upward through the second supporting plate 52 by a part, and the DC motor 53 is electrically connected with the contact type sensor 48. The rotating block 54 is arranged at the rotating end of the DC motor 53, and the rotating block 54 is a certain distance away from the top surface of the second supporting plate 52, and the bottom of the outer wall of the rotating block 54 is sleeved with a second bearing. The number of the levers 55 is two, which are symmetrically arranged at the diameter ends of the top of the outer wall of the rotating block 54, and the two levers 55 are rigidly connected with the top of the outer wall of the rotating block 54, so as to guarantee the stability of the two levers 55 during operation. The first connecting rod 56 is arranged at one side of the outer wall of the second bearing. The cylindrical block 57 is arranged at one end of the top surface of the first connecting rod 56. The second connecting rod 58 is arranged at the other end of the top surface of the first connecting rod 56 through a third bearing, and the second connecting rod 58 is higher than the rotating block 54 and has a certain distance, and the distance is a certain movement space when the second connecting rod 58 is pulled to above the rotating block 54 through rotation. The first joint 59 is arranged at one end of the second connecting rod 58. The second joint 510 is sleeved in the first joint 59, and the second joint 510 can rotate in the first joint 59. The first joint 59 and the second joint 510 are used to offset the rotating force generated by the rotation of the first connecting rod 56, so as to only generate a horizontal pulling force on the moving rod 511. The moving rod 511 is arranged at one end of the outer wall of the second joint 510. The pressing plate 512 is arranged at one end of the moving rod 511, and the center of one side of the outer wall of the pressing plate 512 is connected and fixed with the rubber hitting head 515. The pressing plate 512 is used to press the spring 514. The number of the limiting seats 513 is two. One limiting seat 513 is sleeved at the other end of the moving rod 511, and the bottom surface of the limiting seat 513 sleeved on the moving rod 511 is connected and fixed with the top surface of the second supporting plate 52. The other limiting seat 513 is arranged at the right end of the top surface of the second supporting plate 52. The outer wall of the limiting seat 513 arranged at the right end of the top surface of the second supporting plate 52 is in contact with one side of the outer wall of the pressing plate 512, and one end of the rubber hitting head 515 is sleeved in the other limiting seat 513. The two limiting seats 513 and the top surface of the second supporting plate 52 are welded and fixed, and can bear the high-frequency vibration load generated during the hitting process. The spring 514 is annularly sleeved on the outer wall of the moving rod 511. The surface of the spring 514 is subjected to zinc plating anti-rust treatment, so as to prolong the service life of the spring 514, and the two ends of the spring 514 are respectively in contact with one side of the outer wall of one limiting seat 513 and the other side of the outer wall of the pressing plate 512.The direct current motor 53 drives the rotating block 54 to rotate, and drives the cylindrical block 57 to move the second connecting rod 58 and the moving rod 511 through a push rod 55, so that the spring 514 is deformed by being squeezed by the squeezing plate 512, and when the cylindrical block 57 moves to more than 180 degrees, the elastic release of the spring 514 drives the rubber hitting head 515 to hit the left center of the outer wall of the filtering structure 2, and the number of times of hitting of the rubber hitting head 515 can be controlled by the staff.

[0033] The detailed connection means is a technology known in the art, and the working principle and process are described below. The specific work is as follows.

[0034] The device provides stable support through the support platform 1, relies on the filtering structure 2 to realize air purification, uses the air outlet pipeline 3 to transport clean air, blocks air backflow and cleans impurities through the flow interruption structure 4, and actively cleans the filtering structure 2 through the cleaning device 5 to form a full-process dustproof closed loop. The specific working principle is as follows:

[0035] The filtering structure 2 is arranged at the top rear end of the support platform 1. The external air blower blows the air to be filtered from the top left end of the filtering structure 2 into the inlet, and after being filtered by the internal filter material, the clean air enters the air outlet pipeline 3 through the bottom air outlet at the right end, and is finally transported to the clean room (the air outlet pipeline 3 is connected with the clean room static pressure tank).

[0036] The flow interruption structure 4 replaces the traditional one-way valve to prevent unfiltered air from backflowing by mechanical flow interruption and active impurity removal. The working process is as follows:

[0037] Flow interruption action: The electric push rod 44 is fixed in the concave plate 43, the pushing end of the electric push rod 44 is connected with the rack 45, the other end of the rack 45 is fixed with the flow interruption plate 49, and the electric push rod 44 drives the rack 45 to drive the flow interruption plate 49 to move horizontally in the moving groove 411 of the long plate 410 when the electric push rod 44 is extended or retracted. When the flow interruption plate 49 completely closes the moving groove 411, the air outlet pipeline 3 is blocked, preventing air backflow. When the flow interruption plate 49 retreats, the air outlet pipeline 3 resumes ventilation (the grooves 412 on both sides of the long plate 410 ensure air flow).

[0038] Impurity collection: The solid particles (such as dust and mechanical debris) accumulated at the bottom of the moving groove 411 are pushed to the collection groove 413 when the flow interruption plate 49 moves, and fall into the collection barrel 414 below. The bottom cover 415 is sleeved at the bottom end of the collection barrel 414, and can be disassembled to clean the impurities inside.

[0039] Linkage triggering: When the rack 45 moves, the rack 45 is engaged with the gear 46, drives the gear 46 to rotate, and makes the contact rod 47 fixed to the outer wall of the gear 46 rotate by 90 degrees. When the flow interruption plate 49 is stopped and collides in the moving groove 411 (the flow interruption is completed), the contact rod 47 is just rotated to contact the contact-type inductor 48, triggering the cleaning device 5 to start.

[0040] The cleaning device 5 is linked with the flow interruption structure 4, and the dust on the surface of the filter material in the filter structure 2 is cleaned by hitting and vibration:

[0041] Power transmission: after the contact inductor 48 is triggered, the direct current motor 53 is started, and the rotating end drives the rotating block 54 to rotate, and the two lever rods 55 on the outer wall of the rotating block 54 rotate with it;

[0042] Preparation for hitting: when the lever rod 55 rotates, the cylindrical block 57 on the top surface of the first connecting rod 56 is pushed, the first connecting rod 56 is driven to rotate around the second bearing, and then the second connecting rod 58, the first joint 59, the second joint 510 and the moving rod 511 are pulled; the moving rod 511 drives the extrusion plate 512 to extrude the spring 514 (the ends of the spring 514 abut against the limiting seat 513 and the extrusion plate 512), so that the spring 514 is deformed to store energy;

[0043] Hitting action: when the cylindrical block 57 rotates with the rotating block 54 to more than 180 degrees, the lever rod 55 and the cylindrical block 57 are separated, the spring 514 is elastically released, the extrusion plate 512 is pushed to drive the rubber hitting head 515 to quickly impact the left center of the outer wall of the filter structure 2; through high-frequency vibration (the direct current motor 53 is continuously driven to realize multiple hitting), the dust on the surface of the filter material is shaken off to the dust collection area at the bottom of the filter structure 2, so that the dust is prevented from entering the clean room with the airflow.

[0044] The device blocks the input of the pollution source through the mechanical flow interruption of the flow interruption structure 4 and the collection of impurities, reduces the internal dust source generated by the dust accumulation of the filter material through the active dust cleaning of the cleaning device 5, and forms a closed loop from the three dimensions of "preventing backflow, cleaning impurities, and keeping clean" through the sealing design of the filter structure 2 and the air outlet pipeline 3, so as to continuously provide stable clean air for the clean room.

[0045] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A dust-proof ventilation structure for cleanrooms, comprising: The support platform (1) can support the stable operation of the entire device; The filter structure (2) is located at the rear end of the top surface of the support platform (1) near the center; An air outlet duct (3) is installed at the bottom right end of the filter structure (2), and the bottom of the filter structure (2) is connected and fixed to the support platform (1). The flow interruption structure (4) is located at the front end of the top surface of the support platform (1) near the center. The top of the flow interruption structure (4) extends to the top center of the air outlet duct (3) and the flow interruption structure (4) can interrupt the air outlet duct (3). The cleaning device (5) is located at the left corner of the top surface of the support platform (1). The cleaning device (5) can cooperate with the flow interruption structure (4) so ​​that the cleaning device (5) can clean the filter cartridge in the air outlet duct (3). The flow interruption structure (4) includes: The first support rod (41) is located at the front end of the top surface of the support platform (1) near the center; The first support plate (42) is disposed at the top of the first support rod (41); A concave plate (43) is disposed at the front end center of the top surface of the first support plate (42); The first drive component is disposed within the recess (43); A flow interrupter (49) is disposed at the moving end of the first drive component; The long plate (410) is partitioned and located in the center of the top of the air outlet duct (3); A collection bucket (414) is disposed at one end of the bottom surface of the long plate (410); The bottom cover (415) is fitted onto the outer wall of the bottom end of the collection bucket (414); The long plate (410) has a moving groove (411) at one end, the flow cut-off plate (49) is embedded in one end of the long plate (410), and the flow cut-off plate (49) can move along the long plate (410) within a limited position. The long plate (410) has grooves (412) on both sides of its outer wall, and the two grooves (412) are respectively connected to the inner cavity of the air outlet pipe (3) on the left and right. The first driving component includes: An electric push rod (44) is disposed within the concave plate (43); A rack (45) is provided at the pushing end of the electric push rod (44), and one end of the rack (45) is fixedly connected to the center of one end of the flow cut-off plate (49); The gear (46) is mounted on the rear end of the top surface of the first support plate (42) near the center via a first bearing, and the gear (46) meshes with the rack (45); A contact rod (47) is disposed on one side of the outer tooth of the gear (46); A contact sensor (48) is located at the rear end of the top surface of the first support plate (42) near the left corner.

2. The dustproof ventilation structure for cleanrooms according to claim 1, characterized in that, The bottom end of the movable groove (411) is provided with a collection groove (413) that runs vertically through it, and the inner cavity of the collection bucket (414) extends into the collection groove (413).

3. A dustproof ventilation structure for cleanrooms according to claim 2, characterized in that, The electric push rod (44) drives the rack (45) to rotate the gear (46). When the flow cut-off plate (49) stops and collides in the moving groove (411), the contact rod (47) is rotated to 90 degrees to contact the contact sensor (48).

4. A dustproof ventilation structure for cleanrooms according to claim 3, characterized in that, The cleaning device (5) includes: The second support rod (51) is located at the left corner of the top surface of the support platform (1); The second support plate (52) is disposed at the top of the second support rod (51); The second drive assembly is disposed on the top surface of the second support plate (52); A rubber striking head (515) is disposed at the moving end of the second drive assembly, and the rubber striking head (515) is in contact with the center of the left side of the outer wall of the filter structure (2).

5. A dustproof ventilation structure for cleanrooms according to claim 4, characterized in that, The second driving component includes: A DC motor (53) is disposed at one end of the bottom surface of the second support plate (52), and the DC motor (53) extends upward through the second support plate (52) to a certain extent. The DC motor (53) is electrically connected to the contact sensor (48). A rotating block (54) is disposed at the rotating end of the DC motor (53), and the rotating block (54) is a certain distance away from the top surface of the second support plate (52). A second bearing is sleeved on the bottom of the outer wall of the rotating block (54). Two levers (55) are symmetrically arranged at both ends of the diameter of the top of the outer wall of the rotating block (54); The first connecting rod (56) is disposed on one side of the outer wall of the second bearing; A cylindrical block (57) is disposed at one end of the top surface of the first connecting rod (56); The second link (58) is mounted on the other end of the top surface of the first link (56) via a third bearing, and the second link (58) is higher than the rotating block (54) by a certain distance; The first connector (59) is located at one end of the second connecting rod (58); The second connector (510) is fitted inside the first connector (59), and the second connector (510) can rotate inside the first connector (59); A movable rod (511) is disposed at one end of the outer wall of the second connector (510); An extrusion plate (512) is disposed at one end of the moving rod (511), and the center of one side of the outer wall of the extrusion plate (512) is connected and fixed to the rubber striking head (515); There are two limiting seats (513). One limiting seat (513) is sleeved on the other end of the moving rod (511), and the bottom surface of the limiting seat (513) sleeved on the moving rod (511) is connected and fixed to the top surface of the second support plate (52). The other limiting seat (513) is set on the right end of the top surface of the second support plate (52). One side of the outer wall of the limiting seat (513) set on the right end of the top surface of the second support plate (52) is in contact with one side of the outer wall of the extrusion plate (512), and one end of the rubber striking head (515) is sleeved in the other limiting seat (513). A spring (514) is looped around the outer wall of the moving rod (511), and the two ends of the spring (514) are in contact with one side of the outer wall of a limiting seat (513) and the other side of the outer wall of the extrusion plate (512), respectively.

6. A dustproof ventilation structure for cleanrooms according to claim 5, characterized in that, The DC motor (53) drives the rotating block (54) to rotate, and a lever (55) moves the cylindrical block (57) to pull the second connecting rod (58) and the moving rod (511), thereby squeezing the spring (514) through the extrusion plate (512) to produce deformation. When the cylindrical block (57) moves to more than 180 degrees, the elastic release of the spring (514) drives the rubber striking head (515) to strike the center of the left side of the outer wall of the filter structure (2).

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