Construction dust collecting and purifying device

Abstract

The invention discloses a construction dust collecting and purifying device, relates to the technical field of air filtering, and aims to solve the problems that a filtering structure cannot be adjusted according to the dust concentration in air, and when the dust concentration in the air is relatively high, the air flowing resistance is increased, and the dust concentration in the air cannot be adjusted in the prior art. In order to solve the problem that a large amount of large-particle dust in air cannot be quickly filtered in the prior art, the invention provides the following scheme that the pre-separation device comprises a pre-separation barrel and a dust collection drawer, the pre-separation barrel comprises a barrel body, a vibration ring concentric with the barrel body and a spiral elastic flow guide plate, and an adjusting mechanism is arranged in the barrel body; the adjusting mechanism comprises four electric push rods achieving synchronous action through a PLC, an extrusion cylinder with a plurality of fixing openings formed in the outer wall of the bottom and a plurality of filter screens. The spiral structure can be adjusted in real time according to the air dust concentration, vibration generated in the construction process and vibration generated during eccentric rotation can be utilized, the air flowing resistance can be prevented from being increased, and large-particle dust can be rapidly pre-separated.

Description

Technical Field

[0001] The present invention relates to the technical field of air filtration, and in particular to a construction dust collecting and purifying device. Background Art

[0002] Air filtration is the process of capturing dust from gas-solid two-phase flow through the action of porous filter materials and purifying the gas.

[0003] Construction projects refer to the engineering entities formed by the construction of various types of buildings and their ancillary facilities, and the installation of supporting wiring, pipelines, and equipment. "Buildings" refer to projects with roofs, beams, columns, walls, foundations, and internal spaces that meet people's needs for production, residence, study, and public activities. The construction of "buildings" includes factories, theaters, hotels, shops, schools, hospitals, and residences. New construction, reconstruction, or expansion of these buildings requires the start of construction and the movement of materials, which can only be achieved through construction activities.

[0004] "Ancillary structures and facilities" refer to water towers, bicycle sheds, pools, etc. that are compatible with buildings, and "installation of lines, pipes, and equipment" refers to the installation activities of electrical, water supply and drainage, HVAC, communication, intelligent, elevator and other lines, pipes, and equipment that are compatible with buildings and their ancillary facilities.

[0005] Based on the existing technology, a large amount of dust is generated during the construction process, and an air filter is needed to filter the dust in the air. However, the air filters in the existing technology usually adopt a fixed order of filtration levels (such as coarse filtration → fine filtration → adsorption) during use, and the filtration structure cannot be adjusted according to the dust concentration in the air. When the dust concentration in the air is high, the air flow resistance increases, and a large amount of large particles of dust in the air cannot be quickly filtered. Summary of the Invention

[0006] The present invention provides a construction dust collection and purification device, which solves the problem that the air filter in the prior art cannot adjust the filtering structure according to the dust concentration in the air. When the dust concentration in the air is high, the air flow resistance increases and a large amount of large dust particles in the air cannot be filtered quickly.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A construction dust collection and purification device includes a pre-separation cylinder and a dust collection drawer, the pre-separation cylinder includes a cylinder, a vibration ring concentric with the cylinder and a spiral elastic guide plate, an adjustment mechanism is provided in the cylinder, the adjustment mechanism includes four electric push rods that realize synchronous action through a PLC controller, an extrusion cylinder with several fixed openings on the bottom outer wall and several filter screens embedded in the several fixed openings, an installation mechanism is provided on the upper part of the cylinder, the limiting ring, the inner ring, the extrusion spring sleeved on the outer wall of the inner ring and the outer ring with two openings on the top outer wall, a filter assembly is provided in the limiting ring, and the filter assembly The parts include a ventilation plate slidably mounted in a limiting ring, an air cylinder connected to the top outer wall of the ventilation plate by bolts, an outer filter ring mounted on the outer wall of the air cylinder and a filter element mounted in the air cylinder. An exhaust mechanism is provided on the upper part of the cylinder body, an eccentric rotating assembly is provided at the bottom of the limiting ring, the eccentric rotating assembly includes an eccentric fixed block with a through hole near the center of the limiting ring and a rotating motor connected to the top outer wall of the eccentric fixed block by bolts, four extrusion assemblies are provided under the eccentric fixed block, the extrusion assembly includes a mounting tube, a reset spring mounted in the mounting tube, a slide plate slidably mounted in the mounting tube and an extrusion rod fixed on the outer wall of the slide plate.

[0009] Preferably, a support ring is welded on the inner wall of the lower part of the cylinder, and an air inlet pipe is fixedly provided on the inner wall of one side of the cylinder located above the support ring. The air inlet pipe allows the dust gas to move in a spiral along the inner wall of the cylinder. The vibration ring is welded inside the support ring, and the elastic guide plate is slidably mounted on the inner wall of the cylinder and the outer wall of the vibration ring.

[0010] Preferably, a fixing ring is welded on the upper inner wall of the cylinder, and the four electric push rods are respectively connected to the outer wall of the bottom of the fixing ring by bolts, the top of the extrusion cylinder is connected to the outer wall of the bottom end of the output shaft of the four electric push rods by bolts, and several air inlets are opened on the lower outer wall of the extrusion cylinder.

[0011] Through the above scheme, the air in the construction environment is transported into the space formed by the cylinder and the vibration ring through the air intake pipe. The air enters the cylinder and spirals up along the inner wall of the cylinder and the elastic guide plate. The centrifugal force generated causes large particles of dust to fall on the elastic guide plate. At the same time, the vibration generated in the construction environment causes the dust on the elastic guide plate to move along the spiral surface and fall into the dust collecting drawer. The filter screen filters the pre-separated air, and then the air passes through the air inlet of the extrusion cylinder. When the dust concentration in the outside air is high, the output shafts of the four electric push rods rise, increasing the pitch of the elastic guide plate and reducing the air flow resistance.

[0012] Preferably, a fixing hole is opened on the lower outer wall of the cylinder, and the collecting drawer is slidably sleeved in the fixing hole, the top and bottom of the collecting drawer are respectively abutted against the bottom outer wall of the support ring and the bottom inner wall of the cylinder, and a magnet is embedded on the outer wall of one side of the collecting drawer.

[0013] Preferably, a mounting ring is welded on the inner wall of the upper portion of the cylinder, and a limiting ring is welded on the outer wall of the bottom of the mounting ring. The inner ring is fixed on the outer wall of the top of the mounting ring, and the outer ring is fixed on the outer wall of the top of the mounting ring.

[0014] Preferably, the sliding sleeve inside the limiting ring is provided with a mounting tube, and two clamping blocks are welded on the outer wall of the top end of the mounting tube, two clamping plates are fixed on the inner wall of the upper part of the mounting tube, and the ventilation plate is connected to the outer wall of the bottom end of the mounting tube by bolts.

[0015] Preferably, the exhaust mechanism includes a cylinder cover connected to the top outer wall of the cylinder body by a hinge, a dustproof net, a mounting block connected to the bottom outer wall of the cylinder cover by bolts, and an axial flow fan connected to the bottom outer wall of the mounting block by bolts. An air outlet is provided on the top outer wall of the cylinder cover, and the dustproof net is embedded in the air outlet.

[0016] Through the above scheme, the internal air is discharged through the axial flow fan, and the outside air enters the device along the air inlet pipe under the action of the pressure difference. The outer filter ring and the filter element finally filter and purify the outside air. The installation cylinder is twisted so that the two blocks are located under the two openings. The installation cylinder is pushed out under the action of the tension of the extrusion spring, and then the installation cylinder is pulled out to replace the filter element.

[0017] Preferably, the bottom end of the output shaft of the rotating motor is connected to a transmission shaft via a coupling, and the bottom end of the transmission shaft is connected to a connecting block via bolts.

[0018] Preferably, the mounting tube is fixed on the outer wall of the connecting block, one end of the extrusion rod abuts against the inner wall of the vibration ring, the inner wall of one end of the mounting tube is connected to the limiting block by a bolt, and one end of the extrusion rod passes through and is slidably installed on the outer wall of the limiting block.

[0019] Through the above scheme, the transmission shaft and multiple mounting tubes are driven to rotate by rotating the output shaft of the rotating motor, and the multiple mounting tubes respectively drive the multiple extrusion rods to rotate eccentrically along the inner wall of the vibration ring. At the same time, under the action of the tension of the reset spring, the extrusion rods are always in contact with the inner wall of the vibration ring, and the vibration generated by the eccentric rotation is used to further clean the dust on the elastic guide plate.

[0020] The beneficial effects of the present invention are:

[0021] 1. The air intake pipe transports the air in the construction environment into the space formed by the cylinder and the vibration ring. The air enters the cylinder and spirals up along the inner wall of the cylinder and the elastic guide plate. The centrifugal force generated causes large particles of dust to fall on the elastic guide plate. The filter screen filters the pre-separated air, and then the air passes through the air inlet of the extrusion cylinder. When the dust concentration in the outside air is high, the output shafts of the four electric push rods rise, increasing the pitch of the elastic guide plate and reducing the air flow resistance. The spiral structure can be adjusted in real time according to the dust concentration in the air to avoid increasing the air flow resistance and achieve rapid pre-separation of large particles of dust.

[0022] 2. The vibration generated in the construction environment causes the dust on the elastic guide plate to move along the spiral surface and fall into the dust collecting drawer. The rotating motor output shaft drives the transmission shaft and multiple mounting tubes to rotate. The multiple mounting tubes respectively drive multiple extrusion rods to rotate eccentrically along the inner wall of the vibration ring. At the same time, under the action of the tension of the reset spring, the extrusion rods are always in contact with the inner wall of the vibration ring. The vibration generated by the eccentric rotation is used to further clean the dust on the elastic guide plate. The vibration generated during the construction process and the vibration generated by the eccentric rotation can be used to clean the dust on the elastic guide plate to prevent the accumulation of dust from increasing the air flow resistance, thereby further realizing the rapid pre-separation of large particles of dust.

[0023] In summary, the present invention can adjust the spiral structure in real time according to the dust concentration in the air, and can utilize the vibration generated during the construction process and the vibration generated during eccentric rotation to prevent the increase of air flow resistance and realize rapid pre-separation of large-particle dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall main structure of a construction dust collection and purification device proposed by the present invention.

[0025] Figure 2 The figure is a schematic diagram of the overall partial cross-sectional structure of a construction dust collection and purification device proposed by the present invention.

[0026] Figure 3 This is a schematic diagram of the main cross-sectional structure of a pre-separation barrel of a construction dust collection and purification device proposed by the present invention.

[0027] Figure 4 This is a schematic diagram of the back structure of the pre-separation cylinder of a construction dust collection and purification device proposed by the present invention.

[0028] Figure 5 This is a schematic diagram of the main structure of the adjustment mechanism of a construction dust collection and purification device proposed by the present invention.

[0029] Figure 6This is a partial cross-sectional structural diagram of the installation mechanism of a construction dust collection and purification device proposed by the present invention.

[0030] Figure 7 The present invention proposes Figure 6 Enlarged structural diagram at point A in the middle.

[0031] Figure 8 This is a partial cross-sectional structural diagram of a filter assembly of a construction dust collection and purification device proposed by the present invention.

[0032] Figure 9 This is a schematic diagram of the cross-sectional structure of the air cylinder portion of a construction dust collection and purification device proposed by the present invention.

[0033] Figure 10 This is a partial cross-sectional structural diagram of the exhaust mechanism of a construction dust collection and purification device proposed by the present invention.

[0034] Figure 11 This is a schematic diagram of the main structure of the eccentric rotating component of the construction dust collection and purification device proposed by the present invention.

[0035] Figure 12 This is a schematic diagram of the main cross-sectional structure of an extrusion component of a construction dust collection and purification device proposed by the present invention.

[0036] Figure: 1, pre-separation cylinder; 101, cylinder; 102, support ring; 103, air inlet pipe; 104, vibration ring; 105, elastic guide plate; 2, adjustment mechanism; 201, fixing ring; 202, electric push rod; 203, extrusion cylinder; 204, filter; 3, dust collection drawer; 4, installation mechanism; 401, installation ring; 402, limit ring; 403, inner ring; 404, extrusion spring; 405, outer ring; 5, filter assembly; 501, installation cylinder; 502, block; 50 3. Clamping plate; 504. Ventilation plate; 505. Breathing tube; 506. Outer filter ring; 507. Filter element; 6. Exhaust mechanism; 601. Tube cover; 602. Dust screen; 603. Mounting block; 604. Axial fan; 7. Eccentric rotating assembly; 701. Eccentric fixing block; 702. Rotating motor; 703. Drive shaft; 704. Connecting block; 8. Extrusion assembly; 801. Mounting tube; 802. Return spring; 803. Slide plate; 804. Extrusion rod; 805. Limit block. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] Example 1, with reference to Figure 1-6, a construction dust collection and purification device includes a pre-separation cylinder 1 and a dust collecting drawer 3. The pre-separation cylinder 1 includes a cylinder 101, a vibration ring 104 concentric with the cylinder 101 and a spiral elastic guide plate 105. A support ring 102 is welded on the inner wall of the lower part of the cylinder 101. An air inlet pipe 103 is fixed on the inner wall of one side of the cylinder 101 above the support ring 102. The air inlet pipe 103 allows the dust gas to move spirally along the inner wall of the cylinder 101. The vibration ring 104 is welded in the support ring 102. The elastic guide plate 105 is slidably sleeved on the inner wall of the cylinder 101 and the outer wall of the vibration ring 104. An adjusting mechanism 2 is provided in the cylinder 101. The adjusting mechanism 2 includes four electric push rods 202 that realize synchronous action through a PLC controller, a bottom outer There are several extrusion cylinders 203 with fixed openings on the wall and several filters 204 embedded in the several fixed openings. A fixing ring 201 is welded on the upper inner wall of the cylinder 101. The four electric push rods 202 are respectively connected to the outer wall of the bottom of the fixing ring 201 by bolts. The top of the extrusion cylinder 203 is connected to the outer wall of the bottom end of the output shaft of the four electric push rods 202 by bolts. The extrusion cylinder 203 is slidably mounted on the outer wall of the vibration ring 104. Several air inlets are opened on the lower outer wall of the extrusion cylinder 203. A fixing hole is opened on the lower outer wall of the cylinder 101. The collecting drawer 3 is slidably mounted in the fixing hole. The top and bottom of the collecting drawer 3 are respectively in contact with the outer wall of the bottom of the support ring 102 and the inner wall of the bottom of the cylinder 101. A magnet is embedded on the outer wall of one side of the collecting drawer 3.

[0039] Example 2, reference Figure 7-9, a construction dust collection and purification device, also includes a mounting mechanism 4, a limiting ring 402 slidably sleeved in the extrusion cylinder 203, an inner ring 403, an extrusion spring 404 sleeved on the outer wall of the inner ring 403 and an outer ring 405 with two openings on the top outer wall, a mounting ring 401 is welded on the upper inner wall of the cylinder 101, the limiting ring 402 is welded to the bottom outer wall of the mounting ring 401, the inner ring 403 is fixed on the top outer wall of the mounting ring 401, the outer ring 405 is fixed on the top outer wall of the mounting ring 401, a filter assembly 5 is provided in the limiting ring 402, the filter assembly 5 includes a ventilation plate 504 slidably sleeved in the limiting ring 402, a breathable cylinder 505 connected to the top outer wall of the ventilation plate 504 by bolts, and a sleeve on the outer wall of the breathable cylinder 505 The outer filter ring 506 on the upper part and the filter element 507 sleeved in the air cylinder 505, the limiting ring 402 is provided with a sliding sleeve of the mounting cylinder 501, two clamping blocks 502 are welded on the outer wall of the top end of the mounting cylinder 501, and two clamping plates 503 are fixed on the inner wall of the upper part of the mounting cylinder 501. The ventilation plate 504 is connected to the outer wall of the bottom end of the mounting cylinder 501 by bolts. An exhaust mechanism 6 is provided on the upper part of the cylinder body 101. The exhaust mechanism 6 includes a cylinder cover 601 connected to the outer wall of the top of the cylinder body 101 by a hinge, a dustproof net 602, a mounting block 603 connected to the outer wall of the bottom of the cylinder cover 601 by bolts, and an axial flow fan 604 connected to the outer wall of the bottom of the mounting block 603 by bolts. An air outlet is provided on the outer wall of the top of the cylinder cover 601, and the dustproof net 602 is embedded in the air outlet.

[0040] Example 3, reference Figure 10-11 , a construction dust collection and purification device also includes an eccentric rotating component 7, the eccentric rotating component 7 includes an eccentric fixed block 701 with a through hole near the center of the limiting ring 402 and a rotating motor 702 connected to the top outer wall of the eccentric fixed block 701 by bolts, the bottom end of the output shaft of the rotating motor 702 is connected to the transmission shaft 703 through a coupling, and the bottom end of the transmission shaft 703 is connected to the connecting block 704 by bolts, and four extrusion components 8 are provided below the eccentric fixed block 701, which are used to extrusion Component 8 includes a mounting tube 801, a return spring 802 sleeved in the mounting tube 801, a slide 803 slidably sleeved in the mounting tube 801, and an extrusion rod 804 fixed on the outer wall of the slide 803. The mounting tube 801 is fixed on the outer wall of the connecting block 704, one end of the extrusion rod 804 abuts against the inner wall of the vibration ring 104, and a limiting block 805 is connected to the inner wall of one end of the mounting tube 801 by a bolt, and one end of the extrusion rod 804 passes through and is slidably installed on the outer wall of the limiting block 805.

[0041] The axial flow fan 604 discharges the internal air, and under the action of the pressure difference, the outside air enters the space formed by the cylinder 101 and the vibration ring 104 along the air inlet pipe 103. The air enters the cylinder 101 and spirals up along the inner wall of the cylinder 101 and the elastic guide plate 105. The centrifugal force generated causes large particles of dust to fall on the elastic guide plate 105. At the same time, the vibration generated in the construction environment causes the dust on the elastic guide plate 105 to move along the spiral surface and fall into the dust collecting drawer 3. The filter 204 filters the pre-separated air, and then the air passes through the air inlet of the extrusion cylinder 203. The outer filter ring 506 and the filter element 507 finally filter and purify the outside air. The output shaft of the rotating motor 702 drives the transmission shaft 703 and multiple mounting pipes 8 01 rotates, and multiple mounting tubes 801 respectively drive multiple extrusion rods 804 to rotate eccentrically along the inner wall of the vibration ring 104. At the same time, under the action of the tension of the return spring 802, the extrusion rod 804 is always in contact with the inner wall of the vibration ring 104, and the vibration generated by the eccentric rotation is used to further clean the dust on the elastic guide plate 105. The mounting cylinder 501 is twisted so that the two blocks 502 are located under the two openings. Under the action of the tension of the extrusion spring 404, the mounting cylinder 501 is pushed out, and then the outer filter ring 506 and the filter element 507 can be replaced by pulling out the mounting cylinder 501. When the dust concentration in the outside air is high, the output shafts of the four electric push rods 202 rise, thereby increasing the pitch of the elastic guide plate 105 and reducing the air flow resistance.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0044] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A construction dust collection and purification device, comprising a pre-separation cylinder (1) and a dust collection drawer (3), characterized in that: The pre-separation cylinder (1) comprises a cylinder (101), a vibration ring (104) concentric with the cylinder (101), and a spiral elastic guide plate (105); An adjusting mechanism (2) is provided in the cylinder (101), the adjusting mechanism (2) comprising four electric push rods (202) whose synchronous actions are realized by a PLC controller, an extrusion cylinder (203) with a plurality of fixed openings on the outer wall of the bottom, and a plurality of filter screens (204) embedded in the plurality of fixed openings; The upper portion of the cylinder (101) is provided with a mounting mechanism (4), a limiting ring (402) slidably sleeved in the extrusion cylinder (203), an inner ring (403), an extrusion spring (404) sleeved on the outer wall of the inner ring (403), and an outer ring (405) with two openings on the top outer wall; A filter assembly (5) is provided in the limiting ring (402), and the filter assembly (5) comprises a ventilation plate (504) slidably mounted in the limiting ring (402), a ventilation cylinder (505) connected to the top outer wall of the ventilation plate (504) by bolts, an outer filter ring (506) mounted on the outer wall of the ventilation cylinder (505), and a filter element (507) mounted in the ventilation cylinder (505); An exhaust mechanism (6) is provided on the upper portion of the cylinder (101); An eccentric rotating assembly (7) is provided at the bottom of the limiting ring (402), and the eccentric rotating assembly (7) comprises an eccentric fixing block (701) with a through hole opened near the center of the limiting ring (402) and a rotating motor (702) connected to the top outer wall of the eccentric fixing block (701) by bolts; Four extrusion assemblies (8) are provided below the eccentric fixed block (701), and the extrusion assemblies (8) include a mounting tube (801), a return spring (802) sleeved in the mounting tube (801), a slide plate (803) slidably sleeved in the mounting tube (801), and an extrusion rod (804) fixed on the outer wall of the slide plate (803).

2. A construction dust collection and purification device according to claim 1, characterized in that: A support ring (102) is welded on the inner wall of the lower part of the cylinder (101), and an air inlet pipe (103) is fixedly provided on the inner wall of one side of the cylinder (101) located above the support ring (102). The air inlet pipe (103) allows the dust gas to move spirally along the inner wall of the cylinder (101). The vibration ring (104) is welded inside the support ring (102), and the elastic guide plate (105) is slidably sleeved on the inner wall of the cylinder (101) and the outer wall of the vibration ring (104).

3. A construction dust collection and purification device according to claim 1, characterized in that: A fixing ring (201) is welded on the inner wall of the upper portion of the cylinder (101), and four electric push rods (202) are respectively connected to the outer wall of the bottom of the fixing ring (201) by bolts. The top of the extrusion cylinder (203) is connected to the outer wall of the bottom ends of the output shafts of the four electric push rods (202) by bolts, and a plurality of air inlets are opened on the outer wall of the lower portion of the extrusion cylinder (203).

4. A construction dust collection and purification device according to claim 2, characterized in that: A fixing hole is provided on the lower outer wall of the cylinder (101), and the collecting drawer (3) is slidably sleeved in the fixing hole. The top and bottom of the collecting drawer (3) respectively abut against the bottom outer wall of the support ring (102) and the bottom inner wall of the cylinder (101). A magnet is embedded on one outer wall of the collecting drawer (3).

5. The construction dust collection and purification device according to claim 1, characterized in that: A mounting ring (401) is welded on the inner wall of the upper portion of the cylinder (101), and a limiting ring (402) is welded on the outer wall of the bottom of the mounting ring (401). The inner ring (403) is fixed on the outer wall of the top of the mounting ring (401), and the outer ring (405) is fixed on the outer wall of the top of the mounting ring (401).

6. The construction dust collection and purification device according to claim 1, characterized in that: The inner sliding sleeve of the limiting ring (402) is provided with a mounting cylinder (501), and two clamping blocks (502) are welded on the outer wall of the top end of the mounting cylinder (501), two clamping plates (503) are fixed on the inner wall of the upper part of the mounting cylinder (501), and the ventilation plate (504) is connected to the outer wall of the bottom end of the mounting cylinder (501) by bolts.

7. The construction dust collection and purification device according to claim 1, characterized in that: The exhaust mechanism (6) comprises a cylinder cover (601) connected to the top outer wall of the cylinder body (101) via a hinge, a dust screen (602), a mounting block (603) connected to the bottom outer wall of the cylinder cover (601) via bolts, and an axial flow fan (604) connected to the bottom outer wall of the mounting block (603) via bolts. An air outlet is provided on the top outer wall of the cylinder cover (601), and the dust screen (602) is embedded in the air outlet.

8. The construction dust collection and purification device according to claim 1, characterized in that: The bottom end of the output shaft of the rotating motor (702) is connected to a transmission shaft (703) via a coupling, and the bottom end of the transmission shaft (703) is connected to a connecting block (704) via bolts.

9. The construction dust collection and purification device according to claim 1, characterized in that: The mounting tube (801) is fixed on the outer wall of the connecting block (704), one end of the extrusion rod (804) is in contact with the inner wall of the vibration ring (104), one end of the mounting tube (801) is connected to the limiting block (805) on the inner wall by a bolt, and one end of the extrusion rod (804) passes through and is slidably mounted on the outer wall of the limiting block (805).

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