Indoor and outdoor circulating ventilation device for constructional engineering and ventilation method of indoor and outdoor circulating ventilation device

Abstract

The invention discloses an indoor and outdoor circulating ventilation device for constructional engineering and a ventilation method of the indoor and outdoor circulating ventilation device, and relates to the technical field of constructional engineering ventilation. The inner filtering device is mounted in the outer shell in a manner of sliding up and down; the lower exhaust device is detachably fixed at the bottom opening of the inner filtering device and is in contact with the inner filtering device; the top cover assembly is detachably fixed at the top opening of the outer shell and is in contact with the inner filtering device; through the arrangement of the dust discharging assembly, dust filtered by the inner filtering device can be discharged, the inner filtering device blocked by the dust can be normally unblocked, when the inner filtering device is unblocked, the inner filtering device does not need to be disassembled, normal operation of the fan is kept, and normal use of equipment is not affected; the blocked filtering device can be cleaned at any time.

Description

Technical Field

[0001] The present invention relates to the technical field of building engineering ventilation, and in particular to an indoor and outdoor circulation ventilation device for building engineering and a ventilation method thereof. Background Art

[0002] Indoor and outdoor circulation ventilation devices are often used in construction projects to achieve air flow and maintain indoor air quality. This device can be achieved through natural ventilation or mechanical ventilation. When designing such a system, it is necessary to consider the structure and layout of the building, as well as indoor and outdoor temperature, humidity and other factors. By controlling the indoor and outdoor air flow, the indoor air quality can be effectively improved, and the comfort of the living and working environment can be improved.

[0003] At present, due to changes in location and weather of construction projects, there will be a large amount of dust in the air. The outdoor dust is difficult to handle due to the influence of external airflow and will enter the room with the airflow.

[0004] The Chinese patent document with application publication number CN202110028668.7 discloses a building indoor air ventilation, purification and humidification device: when the equipment stops running, the dust exhaust component is subjected to the torsion force of the torsion spring and flips outward to fit onto the inner wall of the right end of the air duct, thereby blocking the air inlet at the right end of the air duct, preventing dust in the air from entering when the equipment is turned off, thereby maintaining the effective purification ability of the filtering device.

[0005] The above-mentioned indoor air ventilation, purification and humidification device of a building needs to stop running when cleaning, which limits the cleaning time and duration of the equipment. It cannot be cleaned in time after the filter device is blocked, and the indoor air quality cannot be maintained during cleaning. Summary of the invention

[0006] The present invention provides an indoor and outdoor circulation ventilation device and a ventilation method for construction projects, so as to solve the problems in the prior art that the equipment needs to be stopped when cleaning, which limits the cleaning time and duration of the equipment, cannot be cleaned in time after the filter device is blocked, and cannot maintain the indoor air quality during cleaning.

[0007] The technical problem solved by the present invention is achieved by adopting the following technical solutions:

[0008] An indoor and outdoor circulation ventilation device for construction engineering and a ventilation method thereof, comprising:

[0009] outer shell;

[0010] An inner filter device, the inner filter device is installed inside the outer shell so as to be slidable up and down;

[0011] A lower exhaust device, which is detachably fixed to the bottom opening of the inner filter device and contacts the inner filter device;

[0012] A top cover assembly, the top cover assembly is detachably fixed to the top opening of the outer shell and contacts the inner filter device;

[0013] A high-pressure fan, wherein the high-pressure fan is fixed to the air inlet of the top cover assembly;

[0014] A dust exhaust assembly, the dust exhaust assembly being mounted on the lower exhaust device and the inner filter device;

[0015] A pneumatic telescopic rod, the two ends of which are fixedly connected to the inner filter device and the top cover assembly respectively;

[0016] A pipe joint, which is fixed to the top of the pneumatic telescopic rod and extends above the top cover assembly;

[0017] A limiting device is installed inside the outer shell and limits the height of the inner filter device.

[0018] Optionally, the inner filtering device comprises:

[0019] A filter screen is arranged inside the outer shell

[0020] A lower adjusting member, wherein the lower adjusting member is fixed to the bottom of the filter screen;

[0021] An upper blocking ring, wherein the upper blocking ring is detachably fixed on the top of the filter screen;

[0022] A sealing gasket is bonded to the top of the upper blocking ring and contacts the top cover assembly.

[0023] Optionally, the lower adjusting member includes:

[0024] A sealing sleeve, wherein the sealing sleeve is fixed on the top of the filter screen;

[0025] A first magnet, wherein a plurality of the first magnets are provided and fixed at the bottom of the sealing sleeve in an annular array;

[0026] A plurality of blade plates are provided and fixed on the outside of the sealing sleeve in an annular array and connected to the pneumatic telescopic rod;

[0027] A first air pressure sensor is installed on the top of the fan blade.

[0028] Optionally, the lower exhaust device includes:

[0029] A lower bottom plate, the lower bottom plate being fixed at the bottom opening of the outer shell:

[0030] A sealing ring, which is fixed to the top of the lower base plate and contacts the outer shell;

[0031] Exhaust holes, wherein a plurality of exhaust holes are provided and are provided in a circular array on the lower bottom plate and the sealing ring, forming a structure in which the fan blades close the exhaust holes after descending;

[0032] A second magnet is fixed on the top of the lower base plate and repels the first magnet.

[0033] Optionally, the top cover assembly includes:

[0034] A top cover plate, which is detachably fixed to the top opening of the outer shell and contacts the sealing gasket;

[0035] An air inlet duct, which is fixed on the top of the top cover plate and sleeved on the outside of the high-pressure fan;

[0036] A receiving ring, which is fixed inside the air inlet duct and fixedly connected to the high-pressure blower;

[0037] An upper blocking piece is fixed inside the air inlet duct.

[0038] Optionally, the upper blocking member includes:

[0039] A frame plate, the frame plate being fixed at the bottom opening of the air inlet duct;

[0040] A suspension rod, which is fixed to the bottom of the frame plate and extends to the interior of the filter screen;

[0041] The sealing plate is fixed at the bottom of the suspension rod, forming a structure in which the sealing plate contacts the upper sealing ring after the filter screen is lowered to seal the upper sealing ring.

[0042] Optionally, the dust exhaust component includes:

[0043] A dust exhaust duct is fixed inside the lower base plate and inserted upward into the interior of the sealing sleeve;

[0044] An air guide channel, wherein a plurality of air guide channels are provided on the dust exhaust duct in an annular array, forming a structure in which the air guide channels are connected to the filter screen after the filter screen is lowered;

[0045] An upper plate, the upper plate is fixed to the top of the dust exhaust duct and is located inside the sealing sleeve;

[0046] A second air pressure sensor is fixed on the top of the upper plate.

[0047] Optionally, the limiting device includes:

[0048] A plug-in slot, wherein a plurality of the plug-in slots are provided and are opened on the inner wall of the outer shell in a circular array;

[0049] A limit head, which is slidably mounted inside the plug slot and limits the height of the fan blade plate;

[0050] A compression spring, two ends of which are respectively fixedly connected to the inner wall of the plug-in slot and the limit head.

[0051] Optionally, include the following steps:

[0052] Step 1: When ventilating, start the high-pressure fan, and the wind enters the inside of the filter through the air inlet duct, is filtered by the filter, flows to the outside of the filter, and is discharged through the exhaust hole:

[0053] Step 2: When adjusting the wind direction, the pneumatic telescopic rod drives the filter to descend, so that the filter drives the fan blade to descend to block the exhaust hole, and drives the upper blocking ring to contact and seal with the sealing plate, drives the sealing gasket and the top cover plate away, and connects the air guide channel with the filter;

[0054] Step 3: When the filter is self-cleaning, wind enters the outer shell through the air inlet duct, cleans the filter, and drives the dust to enter the dust exhaust duct through the air guide channel, and drives the dust to be discharged;

[0055] Step 4: Adjust to the normal discharge state. The repulsive force between the second magnet and the first magnet drives the filter to rise, so that the filter drives the fan blade to open the exhaust hole, drives the upper sealing ring and the sealing plate to move away, and drives the sealing gasket to contact and seal with the top cover plate, so that the air guide channel moves to the inside of the sealing sleeve, and the sealing sleeve seals the air guide channel.

[0056] The present invention has the following beneficial effects:

[0057] The dust exhaust component can be set to discharge the dust filtered by the inner filter device, so that the inner filter device blocked by dust can be unblocked normally. When the inner filter device is unblocked, it does not need to be disassembled and the normal operation of the fan is maintained, which will not affect the normal use of the equipment, and the blocked filter device can be cleaned at any time.

[0058] The fan blade can block the exhaust hole when the filter is blocked and lowered, changing the flow of airflow, so that the airflow changes the defense line to clean the filter;

[0059] The sealing plate is arranged to seal the top of the filter when the filter is lowered, thereby preventing the airflow from directly entering the interior of the filter and allowing the airflow to enter from the outside of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0061] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0062] Figure 2 This is a schematic diagram of the self-cleaning state of the filter screen of the present invention;

[0063] Figure 3 This is a schematic diagram of the filtering state of the filter screen of the present invention;

[0064] Figure 4 It is a schematic diagram of the structure of the limiting device of the present invention;

[0065] Figure 5 This is a schematic diagram of the sealing sleeve structure of the present invention;

[0066] Figure 6 This is a schematic diagram of the structure of the dust removal component of the present invention;

[0067] Figure 7 It is a schematic diagram of the structure of the upper blocking member of the present invention.

[0068] In the figure: 100, outer shell;

[0069] 200, inner filter device; 210, filter screen; 220, lower adjustment member; 221, sealing sleeve; 222, first magnet; 223, fan blade plate; 224, first air pressure sensor; 230, upper blocking ring; 240, sealing gasket;

[0070] 300, lower exhaust device; 310, lower bottom plate; 320, sealing ring; 330, exhaust hole; 340, second magnet;

[0071] 400, top cover assembly; 410, top cover plate; 420, air inlet duct; 430, receiving ring; 440, upper blocking member; 441, frame plate; 442, suspension rod; 443, sealing plate;

[0072] 500, high pressure fan;

[0073] 600, dust exhaust assembly; 610, dust exhaust duct; 620, air guide channel; 630, upper plate; 640, second air pressure sensor;

[0074] 700, pneumatic telescopic rod;

[0075] 800, pipe joint;

[0076] 900, limit device; 910, plug-in slot; 920, limit head; 930, compression spring. DETAILED DESCRIPTION

[0077] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0078] Reference Figure 1-7 An indoor and outdoor circulation ventilation device and a ventilation method for a construction project are shown, comprising:

[0079] Outer shell 100;

[0080] The inner filter device 200 is slidably installed inside the outer shell 100;

[0081] A lower exhaust device 300, which is detachably fixed at the bottom opening of the inner filter device 200 and contacts the inner filter device 200;

[0082] A top cover assembly 400, which is detachably fixed to the top opening of the outer shell 100 and contacts the inner filter device 200;

[0083] A high-pressure fan 500, the high-pressure fan 500 is fixed to the air inlet of the top cover assembly 400;

[0084] A dust exhaust assembly 600, the dust exhaust assembly 600 is installed on the lower exhaust device 300 and the inner filter device 200;

[0085] A pneumatic telescopic rod 700, both ends of which are fixedly connected to the inner filter device 200 and the top cover assembly 400;

[0086] A pipe joint 800, which is fixed to the top of the pneumatic telescopic rod 700 and extends to the top of the top cover assembly 400;

[0087] The limiting device 900 is installed inside the outer shell 100 and limits the height of the inner filter device 200 .

[0088] Among them, the dust filtered by the inner filter device 200 can be discharged through the setting of the dust exhaust assembly 600, so that the inner filter device 200 blocked by dust can be unblocked normally, and when the inner filter device 200 is unblocked, it does not need to be disassembled and the normal operation of the fan 500 is maintained, and the normal use of the equipment is not affected, and the blocked filter device can be cleaned at any time;

[0089] The high-pressure fan 500 is provided to ensure the normal flow of airflow, and the airflow velocity generated by the high-pressure fan 500 is relatively large, and a relatively large pressure can be generated when the inner filter device 200 is blocked, thereby ensuring the normal adjustment of the inner filter device 200;

[0090] The pneumatic telescopic rod 700 is set to push the inner filter device 200 to move downward when gas is introduced, and is connected to the air pump pipeline through the pipeline joint 800, so that the air pump fills gas into the inside of the pneumatic telescopic rod 700.

[0091] In some embodiments of the present invention, reference Figure 3 As shown, the inner filter device 200 includes:

[0092] The filter screen 210 is disposed inside the outer shell 100.

[0093] A lower adjusting member 220, wherein the lower adjusting member 220 is fixed to the bottom of the filter screen 210;

[0094] An upper blocking ring 230, the upper blocking ring 230 is detachably fixed on the top of the filter screen 210;

[0095] The sealing gasket 240 is bonded to the top of the upper sealing ring 230 and contacts the top cover assembly 400 .

[0096] The filter 210 is used to filter the flowing air, thereby preventing dust from entering the room and affecting the indoor air quality, thereby ensuring the comfort of the living and working environment.

[0097] The sealing gasket 240 can ensure the sealing between the upper sealing ring 230 and the top cover assembly 400, and ensure that the air will first enter the interior of the filter 210 for filtration before the filter 210 is lowered;

[0098] The top of the filter screen 210 is sealed by the setting of the upper sealing ring 230, so that the airflow enters the interior of the filter screen 210 through the upper sealing ring 230, and the normal bonding and fixing of the sealing gasket 240 is ensured.

[0099] In some embodiments of the present invention, reference Figure 4 and Figure 5 As shown, the lower adjustment member 220 includes;

[0100] A sealing sleeve 221, wherein the sealing sleeve 221 is fixed on the top of the filter screen 210;

[0101] A first magnet 222, wherein a plurality of first magnets 222 are provided and fixed at the bottom of the sealing sleeve 221 in an annular array;

[0102] The blade plates 223 are provided in plurality and are fixed to the outside of the sealing sleeve 221 in an annular array and connected to the pneumatic telescopic rod 700;

[0103] The first air pressure sensor 224 is installed on the top of the fan blade plate 223.

[0104] The bottom of the filter screen 210 is blocked by the setting of the sealing sleeve 221, so that the gas inside the filter screen 210 flows along a preset distance;

[0105] Among them, after the filter screen 210 is blocked and contacted, the air pressure between the filter screen 210 and the outer shell 100 will decrease. When the air pressure drops to a certain level, the first air pressure sensor 224 will be triggered, so that the first air pressure sensor 224 will open the pneumatic telescopic rod 700, so that the gas inside the pneumatic telescopic rod 700 can be discharged normally, and the first air pressure sensor 224 adopts an existing air pressure sensor that is publicly traded.

[0106] In some embodiments of the present invention, reference Figure 6 As shown, the lower exhaust device 300 includes:

[0107] The lower bottom plate 310 is fixed at the bottom opening of the outer shell 100:

[0108] A sealing ring 320, the sealing ring 320 is fixed to the top of the lower base plate 310 and is in contact with the outer shell 100;

[0109] Exhaust holes 330, a plurality of exhaust holes 330 are provided, and are provided in a circular array on the lower bottom plate 310 and the sealing ring 320, so that the fan blade plate 223 forms a structure in which the exhaust holes 330 are closed after being lowered;

[0110] The second magnet 340 is fixed on the top of the lower base plate 310 and repels the first magnet 222 .

[0111] The fan blade plate 223 can block the exhaust hole 330 when the filter 210 is blocked and lowered, changing the flow of the airflow so that the airflow changes the defense line to clean the filter 210, and after the fan blade plate 223 releases the blockage of the exhaust hole 330, the gas will be discharged into the room through the exhaust hole 330;

[0112] The lower bottom plate 310 and the sealing ring 320 are arranged to seal the filter screen 210 after it is blocked and lowered, so that the gas can only be discharged from the dust exhaust assembly 600 through the filter screen 210, and the filter screen 210 is cleaned;

[0113] The cooperation between the second magnet 340 and the first magnet 222 pushes the filter 210 to return to its original position when the internal pressure of the pneumatic telescopic rod 700 decreases, so that the filter 210 returns to its original position and operates normally.

[0114] In some embodiments of the present invention, reference Figure 2 and Figure 3 As shown, the top cover assembly 400 includes:

[0115] A top cover plate 410, which is detachably fixed to the top opening of the outer shell 100 and contacts the sealing gasket 240;

[0116] The air inlet duct 420 is fixed to the top of the top cover plate 410 and sleeved on the outside of the high-pressure fan 500;

[0117] A receiving ring 430, which is fixed inside the air inlet duct 420 and fixedly connected to the high-pressure blower 500;

[0118] The upper blocking member 440 is fixed inside the air inlet duct 420 .

[0119] The top of the outer shell 100 is sealed by setting the top cover plate 410, and the sealing gasket 240 is squeezed so that the sealing gasket 240 ensures the seal between the top cover plate 410 and the upper sealing ring 230;

[0120] The air inlet duct 420 is provided to ensure normal air entry, and the high-pressure fan 500 is normally installed and fixed with the cooperation of the receiving ring 430, so that the high-pressure fan 500 can drive the air flow normally.

[0121] In some embodiments of the present invention, reference Figure 7 As shown, the upper blocking member 440 includes:

[0122] A frame plate 441, the frame plate 441 is fixed at the bottom opening of the air inlet duct 420;

[0123] A suspension rod 442, the suspension rod 442 is fixed to the bottom of the frame plate 441 and extends to the inside of the filter screen 210;

[0124] The sealing plate 443 is fixed to the bottom of the suspension rod 442 , so that the sealing plate 443 contacts the upper sealing ring 230 after the filter screen 210 is lowered, thereby sealing the upper sealing ring 230 .

[0125] The mounting and fixing of the sealing plate 443 is ensured by the cooperation of the frame plate 441 and the suspension rod 442, and the position of the sealing plate 443 is ensured so that the sealing plate 443 can slide relative to the filter screen 210 when the filter screen 210 is raised or lowered.

[0126] The sealing plate 443 is arranged to seal the top of the filter 210 when the filter 210 descends, thereby preventing the airflow from directly entering the interior of the filter 210 and allowing the airflow to enter from the outside of the filter 210 .

[0127] In some embodiments of the present invention, reference Figure 6 As shown, the dust exhaust assembly 600 includes:

[0128] A dust exhaust duct 610, which is fixed inside the lower base plate 310 and inserted upward into the sealing sleeve 221;

[0129] A plurality of air guide channels 620 are provided on the dust exhaust duct 610 in a circular array, so that the air guide channels 620 are connected to the filter 210 after the filter 210 is lowered;

[0130] An upper plate 630 , which is fixed to the top of the dust exhaust duct 610 and is located inside the sealing sleeve 221 ;

[0131] The second air pressure sensor 640 is fixed on the top of the upper plate 630 .

[0132] Among them, the dust blown down can be discharged normally after the filter 210 is lowered by the coordinated arrangement of the dust exhaust duct 610 and the air guide channel 620. At the same time, a U-shaped duct is arranged at the air outlet of the dust exhaust duct 610. A plurality of filter holes are opened on the U-shaped duct, so that part of the incoming wind force drives the dust to be discharged, and part of the air enters the room. A filter bag can also be arranged at the air outlet of the dust exhaust duct 610. After the air and dust enter the filter bag, the dust will remain inside the filter bag. When the air enters the room, the filter bag can be removed and cleaned after the filter 210 is cleaned.

[0133] The upper plate 630 is configured to be sealed with the sealing sleeve 221, so that when the filter screen 210 is in normal use, the gas is prevented from entering the dust exhaust duct 610 and being discharged;

[0134] Among them, after the filter 210 is blocked, the air pressure inside the filter 210 will increase. When the air pressure reaches a certain level, it will trigger the second air pressure sensor 640, causing the second air pressure sensor 640 to start the air pump and fill gas into the pneumatic telescopic rod 700, so that the pneumatic telescopic rod 700 extends under the action of air pressure, driving the filter 210 to move.

[0135] In some embodiments of the present invention, reference Figure 4 As shown, the limiting device 900 includes:

[0136] A plurality of plug-in slots 910 are provided and are arranged in a circular array on the inner wall of the outer shell 100;

[0137] The limit head 920 is slidably installed inside the plug slot 910 and limits the height of the fan blade plate 223;

[0138] The compression spring 930 has two ends fixedly connected to the inner wall of the insertion slot 910 and the limit head 920 respectively.

[0139] The arrangement of the plug-in slot 910 provides space for the installation of the limit head 920 and the compression spring 930;

[0140] The fan blade plate 223 is limited by the setting of the limit head 920, so that the pneumatic telescopic rod 700 can push the fan blade plate 223 to move only after a certain amount of gas is filled. At the same time, it can also prevent the filter screen 210 from jumping up and down under the action of the airflow during normal filtering, which affects the sealing effect of the sealing gasket 240, and prevents the gas from being discharged through the exhaust hole 330 without being filtered when the filter screen 210 is not blocked;

[0141] The compression spring 930 is arranged to compress the limiting head 920 after the extrusion force on the limiting head 920 reaches a certain force, so that the limiting head 920 moves to the inside of the plug-in slot 910 .

[0142] In some embodiments of the present invention, when the device is applied to a mine cave or a larger factory building, a high-pressure fan 500 is required to provide a larger wind force. Under the larger wind force, the wind force pushes the filter 210 to move normally when the filter 210 is blocked. The pneumatic telescopic rod 700 can be replaced by a tension spring, so that the filter 210 moves and stretches the tension spring under the action of wind pressure when blocked. After the blockage of the filter 210 is unblocked, the stretching drives the filter 210 to reset. At the same time, the limit head 920 can limit the position of the filter 210 to prevent the filter 210 from rising and opening the exhaust hole 330 just after being cleaned. After the filter 210 is self-cleaned, the tension of the tension spring is greater than the limiting force of the limit head 920 and the resistance of the air pressure, so that the filter 210 is reset.

[0143] In some embodiments of the present invention, the following steps are included:

[0144] Step 1: During ventilation, the high-pressure fan 500 is started, and the wind enters the interior of the filter 210 through the air inlet duct 420, is filtered by the filter 210, flows to the outside of the filter 210, and is discharged through the exhaust hole 330:

[0145] Step 2: When adjusting the wind direction, the pneumatic telescopic rod 700 drives the filter 210 to descend, so that the filter 210 drives the fan blade plate 223 to descend to block the exhaust hole 330, and drives the upper blocking ring 230 to contact and seal with the sealing plate 443, drives the sealing gasket 240 and the top cover plate 410 to move away, and makes the air guide channel 620 communicate with the filter 210;

[0146] Step 3: When the filter 210 is self-cleaning, wind enters the interior of the outer shell 100 through the air inlet duct 420, cleans the filter 210, and drives the dust to enter the interior of the dust exhaust duct 610 through the air guide channel 620, and drives the dust to be discharged;

[0147] Step 4: Adjust to the normal discharge state. The repulsive force between the second magnet 340 and the first magnet 222 drives the filter 210 to rise, so that the filter 210 drives the fan blade plate 223 to open the exhaust hole 330, drives the upper sealing ring 230 and the sealing plate 443 away, and drives the sealing gasket 240 and the top cover plate 410 to contact and seal, so that the air guide channel 620 moves to the inside of the sealing sleeve 221, so that the sealing sleeve 221 seals the air guide channel 620.

[0148] Working method of the present invention:

[0149] When in use, the high-pressure fan 500 is started, and the wind generated by the high-pressure fan 500 drives the air into the interior of the filter 210, and is filtered by the filter 210. The filtered air is discharged into the room through the exhaust hole 330, and the dust remains in the interior of the filter 210.

[0150] When the filter 210 is clogged, the air pressure inside the filter 210 will increase and be sensed by the second air pressure sensor 640, which controls the air pump to start and fill the inside of the pneumatic telescopic rod 700 with air, so that the pneumatic telescopic rod 700 is extended and retracted to drive the fan blade plate 223, the filter 210, the sealing sleeve 221, the sealing gasket 240 and the upper blocking ring 230 to descend, so that the fan blade plate 223 descends to block the exhaust hole 330, the sealing gasket 240 and the upper blocking ring 230 descend and move away from the top cover plate 410, and as the upper blocking ring 230 descends, they contact the sealing plate 443 to block the upper blocking ring 230, and when the sealing sleeve 221 descends, the dust exhaust duct 610 is extended into the interior of the filter 210, and the air guide channel 620 is connected with the filter 210;

[0151] The high-pressure fan 500 will drive the gas into the interior of the outer shell 100, and enter the interior of the filter 210 through the filter holes of the filter 210, and clean the filter holes of the filter 210. The air will drive the dust into the interior of the dust exhaust duct 610 through the air guide channel 620 and be discharged;

[0152] When the filter 210 is self-cleaned, the air pressure inside the outer shell 100 will drop and be sensed by the first air pressure sensor 224, causing the first air pressure sensor 224 to control the pneumatic telescopic rod 700 to open and close the air pump, so that the filter 210 is reset under the repulsive force of the first magnet 222 and the second magnet 340, and the exhaust hole 330 and the upper sealing ring 230 are opened, the air guide channel 620 is blocked, and the sealing gasket 240 and the top cover plate 410 are squeezed.

[0153] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An indoor and outdoor circulation ventilation device for construction engineering, characterized in that: include: An outer shell (100); An internal filter device (200), the internal filter device (200) being installed inside the outer shell (100) in a manner that allows it to slide up and down; A lower exhaust device (300), wherein the lower exhaust device (300) is detachably fixed at the bottom opening of the inner filter device (200) and is in contact with the inner filter device (200); A top cover assembly (400), the top cover assembly (400) is detachably fixed at the top opening of the outer shell (100) and is in contact with the inner filter device (200); A high-pressure fan (500), wherein the high-pressure fan (500) is fixed at the air inlet at the top of the top cover assembly (400); A dust exhaust assembly (600), wherein the dust exhaust assembly (600) is installed on the lower exhaust device (300) and the inner filter device (200); A pneumatic telescopic rod (700), wherein two ends of the pneumatic telescopic rod (700) are respectively fixedly connected to the inner filter device (200) and the top cover assembly (400); A pipe joint (800), the pipe joint (800) being fixed to the top of the pneumatic telescopic rod (700) and extending to the top of the top cover assembly (400); A limiting device (900) is installed inside the outer shell (100) and limits the height of the inner filter device (200).

2. The indoor and outdoor circulation ventilation device for construction engineering according to claim 1, characterized in that: The inner filtering device (200) comprises: A filter screen (210), wherein the filter screen (210) is arranged inside the outer shell (100); A lower adjusting member (220), wherein the lower adjusting member (220) is fixed to the bottom of the filter screen (210); An upper sealing ring (230), wherein the upper sealing ring (230) is detachably fixed on the top of the filter screen (210); A sealing gasket (240) is bonded to the top of the upper sealing ring (230) and is in contact with the top cover assembly (400).

3. The indoor and outdoor circulation ventilation device for construction engineering according to claim 2, characterized in that: The lower adjusting member (220) comprises: A sealing sleeve (221), wherein the sealing sleeve (221) is fixed on the top of the filter screen (210); A first magnet (222), wherein a plurality of the first magnets (222) are provided and fixed at the bottom of the sealing sleeve (221) in an annular array; A plurality of blade plates (223) are provided and fixed on the outside of the sealing sleeve (221) in an annular array and connected to the pneumatic telescopic rod (700); A first air pressure sensor (224), wherein the first air pressure sensor (224) is installed on the top of the fan blade plate (223).

4. The indoor and outdoor circulation ventilation device for construction engineering according to claim 3, characterized in that: The lower exhaust device (300) comprises: A lower bottom plate (310), wherein the lower bottom plate (310) is fixed at the bottom opening of the outer shell (100): A sealing ring (320), wherein the sealing ring (320) is fixed to the top of the lower base plate (310) and is in contact with the outer shell (100); An exhaust through hole (330), wherein a plurality of the exhaust through holes (330) are provided and are provided in an annular array on the lower bottom plate (310) and the sealing ring (320), so as to form a structure in which the fan blade plate (223) blocks the exhaust through holes (330) after descending; The second magnet (340) is fixed on the top of the lower base plate (310) and repels the first magnet (222).

5. The indoor and outdoor circulation ventilation device for construction engineering according to claim 2, characterized in that: The top cover assembly (400) comprises: A top cover plate (410), the top cover plate (410) being detachably fixed at the top opening of the outer shell (100) and in contact with the sealing gasket (240); An air inlet duct (420), wherein the air inlet duct (420) is fixed to the top of the top cover plate (410) and sleeved on the outside of the high-pressure fan (500); A receiving ring (430), wherein the receiving ring (430) is fixed inside the air inlet duct (420) and is fixedly connected to the high-pressure fan (500); An upper sealing member (440), wherein the upper sealing member (440) is fixed inside the air inlet duct (420).

6. The indoor and outdoor circulation ventilation device for construction engineering according to claim 5, characterized in that: The upper blocking member (440) comprises: A frame plate (441), wherein the frame plate (441) is fixed at the bottom opening of the air inlet duct (420); A suspension rod (442), wherein the suspension rod (442) is fixed to the bottom of the frame plate (441) and extends to the inside of the filter screen (210); A sealing plate (443) is fixed to the bottom of the suspension rod (442), so that the sealing plate (443) contacts the upper sealing ring (230) after the filter screen (210) is lowered, and seals the upper sealing ring (230).

7. An indoor and outdoor circulation ventilation device for construction engineering according to claim 6, characterized in that: The dust exhaust assembly (600) comprises: A dust exhaust duct (610), wherein the dust exhaust duct (610) is fixed inside the lower base plate (310) and inserted upward into the interior of the sealing sleeve (221); An air guide channel (620), wherein a plurality of the air guide channels (620) are provided on the dust exhaust duct (610) in an annular array, forming a structure in which the air guide channels (620) are connected to the filter screen (210) after the filter screen (210) is lowered; An upper plate (630), wherein the upper plate (630) is fixed to the top of the dust exhaust duct (610) and is located inside the sealing sleeve (221); A second air pressure sensor (640), the second air pressure sensor (640) is fixed on the top of the upper plate (630).

8. The indoor and outdoor circulation ventilation device for construction engineering according to claim 7, characterized in that: The limiting device (900) comprises: A plug-in slot (910), wherein a plurality of the plug-in slots (910) are provided and are opened on the inner wall of the outer shell (100) in a circular array; A limit head (920), wherein the limit head (920) is slidably mounted inside the plug slot (910) and limits the height of the fan blade plate (223); A compression spring (930), wherein two ends of the compression spring (930) are respectively fixedly connected to the inner wall of the insertion slot (910) and the limiting head (920).

9. A ventilation method for an indoor and outdoor circulation ventilation device for construction engineering, characterized in that: The indoor and outdoor circulation ventilation device for construction engineering according to claim 8 further comprises the following steps: Step 1: During ventilation, the high-pressure fan (500) is started, and the wind enters the interior of the filter (210) through the air inlet duct (420), is filtered by the filter (210), flows to the outside of the filter (210), and is discharged through the exhaust hole (330): Step 2: When adjusting the wind direction, the pneumatic telescopic rod 700 drives the filter screen (210) to descend, so that the filter screen (210) drives the fan blade plate (223) to descend to block the exhaust hole (330), and drives the upper blocking ring (230) to contact and seal with the sealing plate (443), drives the sealing pad (240) and the top cover plate (410) to move away, and connects the air guide channel (620) with the filter screen (210); Step 3: When the filter (210) is self-cleaning, wind enters the interior of the outer shell (100) through the air inlet duct (420), cleans the filter (210), enters the interior of the filter (210), and drives dust to enter the interior of the dust exhaust duct (610) through the air guide channel (620), and drives the dust to be discharged; Step 4: Adjust to the normal discharge state. The repulsive force between the second magnet (340) and the first magnet (222) drives the filter (210) to rise, so that the filter (210) drives the fan blade plate (223) to open the exhaust hole (330), drives the upper sealing ring (230) and the sealing plate (443) to move away from each other, and drives the sealing gasket (240) and the top cover plate (410) to contact and seal, so that the air guide channel (620) moves to the inside of the sealing sleeve (221), so that the sealing sleeve (221) seals the air guide channel (620).

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