Indoor ventilation and odor removal equipment for decoration construction

Abstract

This invention relates to the field of indoor ventilation technology, and more particularly to an indoor ventilation and odor removal device for decoration and construction. The device includes: a ventilation housing with an internal fan and an exhaust duct on the upper surface of the ventilation housing that can communicate with an external exhaust pipe. One side of the ventilation housing is provided with a splicing unit, a noise reduction adjustment mechanism, an anti-blocking mechanism, and connecting components. Based on the coordinated arrangement of multiple components in the noise reduction adjustment mechanism, when workers are decorating indoors, the rectifier blades and variable diameter blades are driven to retract, reducing the duct diameter and flow diameter. This forces the airflow to be straightened by the reduced flow diameter when it enters the connecting end through the splicing pipe, enhancing rectification and suppressing the vortex formed in the connecting end, thus automatically reducing noise. Furthermore, the angle of the variable diameter blades can be adjusted to control the airflow, allowing the airflow to be adjusted according to demand while simultaneously adjusting the rectification intensity, thereby reducing noise in the ventilation and odor removal device.

Description

Technical Field

[0001] This invention relates to the field of indoor ventilation technology, and in particular to an indoor ventilation and odor removal device for decoration and construction. Background Technology

[0002] Ventilation equipment is a device that achieves air exchange through natural or mechanical means. It is mainly used to regulate indoor air quality and meet the ventilation needs of industrial production, medical care, agriculture and other fields. Its core functions include introducing fresh air, expelling pollutants and regulating temperature and humidity. It can be divided into two categories: natural ventilation and mechanical ventilation. In the process of achieving indoor air exchange, it simultaneously removes odors from the indoor air to avoid indoor air turbidity and odors caused by poor air circulation.

[0003] Most existing ventilation and odor removal devices work by actively drawing in and expelling air through a fan, creating an indoor-outdoor air circulation. This process expels odor-laden, polluted air while simultaneously introducing and purifying fresh outdoor air. The typical ventilation and odor removal process involves opening indoor windows to allow outdoor air to enter the room, and then forcibly expelling the polluted indoor air through a fan, providing continuous ventilation throughout the house. This method is suitable for ventilation in houses undergoing renovation.

[0004] However, when existing ventilation and odor removal equipment is used in the interior decoration process, because odors and dust are continuously generated at the decoration site, a sufficiently large air volume is required to meet the ventilation and odor removal requirements during the decoration construction process. However, during the interior decoration construction process, workers need to stay indoors, and a large air volume requires a large equipment, which will generate a lot of noise when in use, affecting the workers. As a result, workers cannot stay indoors for a long time to carry out the decoration, thus affecting the progress of the interior decoration construction.

[0005] Therefore, the present invention provides an indoor ventilation and odor removal device for decoration and construction to solve the above-mentioned problems. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing an indoor ventilation and odor removal device for decoration and construction.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An indoor ventilation and odor removal device for decoration and construction includes: a ventilation housing with a fan inside and an exhaust duct disposed on the upper surface of the ventilation housing and which can be connected to an external exhaust duct. A splicing unit, a noise reduction adjustment mechanism, an anti-blocking mechanism and a connecting component are provided on one side of the ventilation housing.

[0009] The noise reduction adjustment mechanism includes two parallel mounting rings, variable diameter blades and rectifier blades arranged in a ring array with the mounting rings as the center, a connecting plate that matches the number of variable diameter blades and rectifier blades and is evenly distributed in a ring, and a drive unit. The two mounting rings are fixedly installed inside the splicing unit. The variable diameter blades and rectifier blades are rotatably installed inside the mounting rings by means of pins. The two sides of the connecting plate are rotatably connected to the variable diameter blades and rectifier blades by means of pins, respectively.

[0010] Preferably, the splicing unit includes a connecting end and a splicing pipe that are fixedly mounted to the air inlet end of the ventilation housing by bolts. One end of the connecting end is slidably inserted with an elastic pad that is fixedly connected to the splicing pipe. One end of the elastic pad is fixedly connected to a tapered air inlet pipe. The mounting ring is fixedly mounted inside the connecting end.

[0011] Preferably, the drive unit includes an electric push rod fixedly connected inside the ventilation housing. The output end of the electric push rod is fixedly connected to a push ring slidably connected inside the connecting end. One side of the push ring is rotatably connected to a connector via a pin. One side of the connector is rotatably connected to the rectifier blade via a pin.

[0012] Preferably, both the connecting end and the splicing pipe are provided with insertion grooves with the same diameter as the elastic pad. The inner arc surface of the elastic pad is parallel to the inner arc surface of the splicing pipe. Based on the setting of the insertion groove, after the elastic pad and the splicing pipe are inserted into the connecting end, the splicing pipe, the elastic pad, and the inner arc surface of the connecting end are arranged in parallel.

[0013] Preferably, the lower surface of the conical air inlet pipe is fixedly connected to a support frame by bolts, and the lower surface of the support frame is provided with a movable wheel, and the lower surface of the movable wheel is at the same horizontal line as the lower surface of the ventilation housing.

[0014] Preferably, the anti-blocking mechanism includes a movable ring slidably disposed inside one of the splicing pipes. On one side of the movable ring, electrostatic adsorption sheets are arranged in a circular array with the movable ring as the center, for adsorbing dust contained in the air intake inside the splicing pipe. The electrostatic adsorption sheets are provided with a gap between them and the inner wall of the splicing pipe.

[0015] Preferably, the anti-clogging mechanism further includes two scraping plates respectively attached to the outer arc surface and the inner arc surface of the electrostatic adsorption sheet. A connecting block is fixedly connected to the opposite sides of the two scraping plates. A movable rod extending to the outside of the conical air inlet pipe is fixedly connected to one side of the connecting block. A handle is fixedly connected to one end of the two movable rods.

[0016] Preferably, the connecting assembly includes two linkage rods rotatably connected to one side of the moving ring via pins. One side of each linkage rod is rotatably connected to two variable diameter blades via pins. Both inner walls of one of the splicing pipes are longitudinally provided with multiple parallel protrusions, and the protrusions are located on both sides of the moving ring. The moving ring is made of an elastic material.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. Based on the coordinated setting of multiple components in the noise reduction and adjustment mechanism, when workers are doing interior decoration, the electric push rod is activated, which drives the rectifier blades and variable diameter blades to retract, reducing the diameter of the air duct and the flow diameter. This improves the rectification effect when the air enters the connection end through the splicing pipe. The airflow is forcibly straightened by the reduced flow diameter, suppressing the vortex formed by the air in the connection end, thus achieving automatic noise reduction. Furthermore, the air volume can be controlled by adjusting the angle of the variable diameter blades, so that the air volume can be adjusted according to the demand, while the rectification intensity is also adjusted to reduce the noise of the ventilation and odor removal equipment, so as to avoid the noise of the ventilation and odor removal equipment being too loud and affecting the workers when they are doing interior decoration.

[0019] 2. Based on the synergistic effect of multiple components such as splicing units and support frames, the device can freely adjust the extension length of the air inlet duct according to the ventilation location of the room, and the conical air inlet pipe can adjust its position according to the length of the duct. This allows the device to achieve ventilation and odor removal in different locations of the room without moving the main body. Furthermore, through the smooth splicing between the splicing pipe, connecting end and elastic pad, the setting of rectifier blades and conical air inlet pipe, when the air enters the splicing pipe, it is guided by the conical air inlet pipe to reduce the generation of air inlet vortices. The smooth splicing also reduces the resistance in the duct and avoids the problem of air volume reduction due to duct extension.

[0020] 3. Based on the synergy of multiple components in the anti-blocking mechanism, after indoor air enters the splicing pipe, the dust in the air is adsorbed by the electrostatic adsorption sheet, which prevents dust from following the air into the connection end and accumulating in the air duct, increasing the internal resistance of the air duct, and affecting the ventilation and odor removal during the indoor decoration process. In addition, through the cooperation of the scraping plate, connecting block and moving rod, when the electrostatic adsorption sheet is used, pulling the handle and moving rod causes the connecting block to drive the scraping plate to slide on the electrostatic adsorption sheet, scraping off the dust on its surface and bringing it out of the splicing pipe, avoiding excessive dust adsorption that would affect the normal use of the electrostatic adsorption sheet;

[0021] 4. Based on the configuration of multiple components in the connecting assembly, when the electric push rod adjusts the angle of the rectifier blade and the variable diameter blade, the change in the angle of the variable diameter blade drives the linkage rod to slide inside the splicing pipe, thereby pushing the moving ring to move synchronously. Furthermore, due to the elastic material of the moving ring, when the moving ring moves on the protrusion, it deforms and resets upon disengaging from the protrusion, impacting the splicing pipe and generating vibration. This vibration is transmitted to the electrostatic adsorption sheet, causing the accumulated dust on it to fall into the splicing pipe. This achieves coupled control of dust cleaning from the electrostatic adsorption sheet and duct diameter adjustment, avoiding frequent cleaning of the dust on the electrostatic adsorption sheet by workers and further improving the effectiveness of the device. Attached Figure Description

[0022] Figure 1 This is a front structural diagram of an indoor ventilation and odor removal device for decoration and construction proposed in this invention;

[0023] Figure 2 This is a schematic diagram of the disassembled structure of the splicing unit and anti-blocking mechanism of an indoor ventilation and odor removal device for decoration and construction proposed in this invention;

[0024] Figure 3 This is a side view of an indoor ventilation and odor removal device for decoration and construction proposed in this invention.

[0025] Figure 4 This is a schematic diagram of the noise reduction adjustment structure, anti-blocking mechanism, and connecting components of an indoor ventilation and odor removal device for decoration and construction proposed in this invention.

[0026] Figure 5 This is a schematic diagram of the noise reduction adjustment mechanism of an indoor ventilation and odor removal device for decoration and construction proposed in this invention;

[0027] Figure 6 This is a schematic diagram of the anti-clogging mechanism of an indoor ventilation and odor removal device for decoration and construction proposed in this invention.

[0028] Figure 7 This is a schematic diagram of the protrusions, scraping plate, and electrostatic adsorption sheet of an indoor ventilation and odor removal device for decoration and construction proposed in this invention.

[0029] Figure 8 This is a schematic diagram of the splicing pipe, conical air inlet pipe, protrusion, and moving ring structure of an indoor ventilation and odor removal device for decoration and construction proposed in this invention.

[0030] In the diagram: 1. Ventilation housing; 2. Exhaust duct; 3. Mounting ring; 4. Variable diameter blade; 5. Rectifying blade; 6. Connecting plate; 7. Connecting end; 8. Elastic pad; 9. Splicing pipe; 10. Conical air inlet pipe; 11. Electric push rod; 12. Push ring; 13. Connector; 14. Insertion slot; 15. Support frame; 16. Moving ring; 17. Electrostatic adsorption sheet; 18. Scraper; 19. Connecting block; 20. Moving rod; 21. Linkage rod; 22. Protrusion. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0033] Reference Figures 1-8 An indoor ventilation and odor removal device for decoration and construction includes: a ventilation housing 1 with a fan inside and an exhaust duct 2 disposed on the upper surface of the ventilation housing 1 and connected to an external exhaust duct. The ventilation housing 1 is characterized in that a splicing unit, a noise reduction adjustment mechanism, an anti-blocking mechanism and a connecting component are provided on one side.

[0034] Before using the device, the external exhaust pipe is bolted into the exhaust duct 2 and one end of the exhaust pipe is extended to the outside, so that after the fan draws out the indoor air and odors, it can exhaust the polluted air to the outside, thereby achieving indoor ventilation and odor removal.

[0035] The noise reduction adjustment mechanism includes two parallel mounting rings 3, variable diameter blades 4 and rectifier blades 5 arranged in a ring array with the mounting rings 3 as the center, a connecting plate 6 that matches the number of variable diameter blades 4 and rectifier blades 5 and is evenly distributed in a ring, and a drive unit. The two mounting rings 3 are fixedly installed inside the splicing unit. The variable diameter blades 4 and rectifier blades 5 are rotatably installed inside the mounting rings 3 by means of pins. The two sides of the connecting plate 6 are rotatably connected to the variable diameter blades 4 and rectifier blades 5 by means of pins respectively.

[0036] Among them, the variable diameter blade 4 is used to adjust the ventilation diameter of the air duct;

[0037] The air duct is an air supply channel assembled from splicing pipe 9, connecting end 7, elastic padding layer 8 and conical air inlet pipe 10;

[0038] Among them, the rectifier blade 5 is used to adjust the rectification intensity in the air duct;

[0039] Among them, the connecting plate 6 is used to connect the rectifier blade 5 and the variable diameter blade 4 to realize the linkage between the two and make them move synchronously.

[0040] In the embodiments of the above technical solution, when workers are doing interior decoration, the drive unit is activated, which drives the rectifier blades 5 to retract on the mounting ring 3, thereby moving the connecting plate 6. The connecting plate 6 then drives the variable diameter blades 4 to adjust their angles in accordance with the rectifier blades 5. This adjusts the ventilation diameter of the air duct and the rectification intensity in the air duct. As a result, after the wind enters the air duct, the airflow is forcibly straightened by the reduced flow diameter, suppressing the vortex formed by the wind in the air duct and achieving automatic noise reduction. This allows the device to be used by workers during the decoration process.

[0041] Furthermore, through the cooperation between the drive unit and the variable diameter blades 4, the intensity of ventilation and odor removal can be adjusted according to whether the workers are decorating. When the workers finish decorating, the drive rectifier blades 5 open, so that the variable diameter blades 4 open synchronously, thereby increasing the ventilation diameter of the air duct, reducing its internal wind resistance, and achieving high-power and high-efficiency ventilation. During the workers' construction, the equipment is adjusted to a low-power and low-noise ventilation mode, so that the device can be used for ventilation and odor removal in different scenarios.

[0042] Reference Figure 2 The splicing unit includes a connecting end 7 and a splicing pipe 9, which are fixed to the air inlet end of the ventilation housing 1 by bolts. One end of the connecting end 7 is slidably inserted with an elastic pad 8 that is fixedly connected to the splicing pipe 9. One end of the elastic pad 8 is fixedly connected to a tapered air inlet pipe 10. The mounting ring 3 is fixedly set inside the connecting end 7.

[0043] The connecting end 7 is used to connect to the ventilation housing 1;

[0044] Among them, the splicing pipe 9 is inserted into the connecting end 7 through the elastic pad 8 to complete the splicing of the air duct;

[0045] The conical air inlet pipe 10 serves as the air inlet end and guides the air entering the air duct to prevent eddies from forming when the air enters the air duct.

[0046] After connecting the connecting end 7 to the ventilation housing 1 with bolts, the elastic pad 8 is inserted into the insertion groove 14 in the connecting end 7. Due to the elasticity of the elastic pad 8, the elastic pad 8 expands outward in the insertion groove 14, thereby increasing the friction between the elastic pad 8 and the connecting end 7, achieving a tight connection between the splicing pipe 9 and the connecting end 7. Furthermore, through the setting of the elastic pad 8 and the insertion groove 14, the air duct can be extended at will, and the conical air inlet pipe 10 can adjust its position according to the length of the air duct, so that the device can achieve ventilation and odor removal in different parts of the room without moving the main body.

[0047] Reference Figure 5 The drive unit includes an electric push rod 11 fixedly connected inside the ventilation housing 1. The output end of the electric push rod 11 is fixedly connected to a push ring 12 slidably connected inside the connection end 7. One side of the push ring 12 is connected to a connector 13 in a ring-shaped manner via a pin. One side of the connector 13 is rotatably connected to the rectifier blade 5 via a pin.

[0048] Among them, the electric push rod 11 is used to provide power to the push ring 12;

[0049] Among them, the push ring 12 is used to drive the connector 13 to move in the air duct;

[0050] Among them, the connector 13 is used to drive the angle adjustment of the rectifier blade 5;

[0051] When it is necessary to adjust the angle of the rectifier blade 5 and the variable diameter blade 4, the electric push rod 11 is activated, which drives the push ring 12 to move in the air duct, thereby driving the connector 13 to move synchronously. This causes the connector 13 to drive the rectifier blade 5 to open and close on the mounting ring 3, thereby adjusting the angle of the rectifier blade 5 in the air duct. At the same time, through the setting of the connecting plate 6, the angle of the variable diameter blade 4 is driven, thereby adjusting the rectification intensity of the air duct and the ventilation diameter.

[0052] Reference Figure 2 and Figure 8 Both the connecting end 7 and the splicing pipe 9 are provided with insertion grooves 14 with the same diameter as the elastic pad 8. The inner arc surface of the elastic pad 8 is parallel to the inner arc surface of the splicing pipe 9. Based on the setting of the insertion grooves 14, after the elastic pad 8 and the splicing pipe 9 are inserted into the connecting end 7, the splicing pipe 9, the elastic pad 8 and the inner arc surface of the connecting end 7 are set in parallel.

[0053] The insertion slot 14 is used for splicing between multiple splicing pipes 9 and between splicing pipes 9 and connecting end 7;

[0054] By smoothly splicing the splicing pipe 9, connecting end 7, and elastic pad 8, and by setting the rectifier blades 5 and the conical air inlet pipe 10, when the air enters the splicing pipe 9, it is guided by the conical air inlet pipe 10 to reduce the generation of air inlet vortices. The smooth splicing of the air duct reduces the resistance in the air duct. Thus, when the position of the air duct in the room is adjusted according to the needs and the length of the air duct is changed, the ventilation efficiency of the air duct will not be affected by the increase in air duct resistance, the decrease in air volume, and the generation of vortices and the increase in noise due to the extension of the air duct, the increase of the number of bends in the air duct, and the sudden change of the cross section, without adjusting the fan power.

[0055] A support frame 15 is fixedly connected to the lower surface of the conical air inlet pipe 10 by bolts. The lower surface of the support frame 15 is provided with a movable wheel, and the lower surface of the movable wheel is at the same horizontal line as the lower surface of the ventilation housing 1.

[0056] Among them, the support frame 15 is used to support the conical air inlet pipe 10 to avoid the angle change between the conical air inlet pipe 10 and the splicing pipe 9 when the air duct is extended, which would result in the inability to stably guide the air.

[0057] Among them, the movable wheels are used to drive the support frame 15 to move, making it easier for the support frame 15 to drive the conical air inlet pipe 10 to move, thus making it easier to adjust the length of the air duct.

[0058] By setting the lower surface of the movable wheel to be at the same horizontal level as the lower surface of the ventilation housing 1, the conical air inlet pipe 10 is always stably supported during the extension of the air duct.

[0059] Reference Figure 6 The anti-blocking mechanism includes a movable ring 16 that is slidably disposed inside one of the splicing pipes 9. On one side of the movable ring 16, electrostatic adsorption sheets 17 are arranged in a ring array with the movable ring 16 as the center, which are used to adsorb dust contained in the air intake inside the splicing pipe 9. The electrostatic adsorption sheets 17 are provided with a gap between them and the inner wall of the splicing pipe 9.

[0060] Among them, the moving ring 16 is used to move in the splicing tube 9, thereby driving the electrostatic adsorption sheet 17 to move synchronously;

[0061] Among them, the electrostatic adsorption sheet 17 is used to electrostatically adsorb dust in the wind to avoid dust affecting the air duct.

[0062] The gap between the electrostatic adsorption sheet 17 and the inner wall of the splicing pipe 9 is used to install the scraper 18 and the connecting block 19.

[0063] During the ventilation and odor removal process of this device, the air enters the air duct through the conical air inlet pipe 10 and passes through the opposite sides of multiple electrostatic adsorption plates 17. The electrostatic adsorption plates 17 adsorb the dust in the air, reducing the dust content in the air, thereby preventing dust from accumulating inside the air duct and on the surface of the variable diameter blades 4, which would increase the resistance of the air duct and affect the ventilation and odor removal of this device.

[0064] The anti-blocking mechanism also includes two scraping plates 18 that are respectively attached to the outer arc surface and the inner arc surface of the electrostatic adsorption plate 17. The two scraping plates 18 are fixedly connected to a connecting block 19 on opposite sides. A movable rod 20 extending to the outside of the conical air inlet pipe 10 is fixedly connected to one side of the connecting block 19. A handle is fixedly connected to one end of the two movable rods 20.

[0065] Among them, the scraper 18 is used to scrape off the dust on the surface of the electrostatic adsorption sheet 17;

[0066] The connecting block 19 and the moving rod 20 are used to drive the scraping plate 18 to move on the surface of the electrostatic adsorption sheet 17.

[0067] The handle is used to manually drive the moving lever 20 to move.

[0068] After the electrostatic adsorption sheet 17 adsorbs dust in the wind, by pulling the handle, the moving rod 20 is driven to move the connecting block 19 in the air duct, so that the scraper 18 slides on the surface of the electrostatic adsorption sheet 17 to scrape off the dust adsorbed on its surface and carry the dust out of the conical air inlet pipe 10, thus completing the removal of dust and avoiding excessive dust adsorption that would affect the normal use of the electrostatic adsorption sheet 17.

[0069] Reference Figures 4-6 The connecting component includes two linkage rods 21 that are rotatably connected to one side of the moving ring 16 via pins. One side of the linkage rod 21 is rotatably connected to two variable diameter blades 4 via pins. Both inner walls of one of the splicing pipes 9 are longitudinally provided with multiple parallel protrusions 22, and the protrusions 22 are provided on both sides of the moving ring 16. The moving ring 16 is made of elastic material.

[0070] Among them, the linkage rod 21 is used to connect the variable diameter blade 4 and the moving ring 16;

[0071] Among them, the protrusion 22 is used to squeeze the moving ring 16;

[0072] Among them, the movable ring 16 is made of elastic rubber. When it moves onto the protrusion 22, it will be squeezed by the protrusion 22 and deformed.

[0073] When in use, the electrostatic adsorption sheet 17 continuously adsorbs dust in the air. When the ventilation diameter and rectification intensity are adjusted by changing the angle of the variable diameter blade 4 and the rectifier blade 5, the angle of the variable diameter blade 4 rotates, driving the linkage rod 21 to slide in the air duct. This causes the linkage rod 21 to drive the moving ring 16 to move in the air duct, making the moving ring 16 contact the protrusion 22 and deform under the pressure of the protrusion 22. After the moving ring 16 separates from the protrusion 22, it automatically resets based on its own elasticity and impacts the surface of the air duct during reset, causing the moving ring 16 to vibrate. This vibration is transmitted to the electrostatic adsorption sheet 17, causing the electrostatic adsorption sheet 17 to vibrate and shake the dust adsorbed on its surface into the air duct, reducing the frequency of manual cleaning of the electrostatic adsorption sheet 17 and extending its service life.

[0074] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An indoor ventilation and odor removal device for decoration and construction, comprising: The ventilation housing (1) with a fan inside and an exhaust duct (2) disposed on the upper surface of the ventilation housing (1) and connected to an external exhaust duct are characterized in that a splicing unit, a noise reduction adjustment mechanism, an anti-blocking mechanism and a connecting component are provided on one side of the ventilation housing (1). The noise reduction adjustment mechanism includes two parallel mounting rings (3), variable diameter blades (4) and rectifier blades (5) arranged in a ring array with the mounting rings (3) as the center, a connecting plate (6) that matches the number of variable diameter blades (4) and rectifier blades (5) and is evenly distributed in a ring, and a driving unit. The two mounting rings (3) are fixedly installed inside the splicing unit. The variable diameter blades (4) and rectifier blades (5) are rotatably installed inside the mounting rings (3) by means of pins. The two sides of the connecting plate (6) are rotatably connected to the variable diameter blades (4) and rectifier blades (5) by means of pins.

2. The indoor ventilation and odor removal device for decoration and construction as described in claim 1, characterized in that, The splicing unit includes a connecting end (7) and a splicing pipe (9) fixed to the air inlet end of the ventilation housing (1) by bolts. One end of the connecting end (7) is slidably inserted with an elastic pad (8) fixedly connected to the splicing pipe (9). One end of the elastic pad (8) is fixedly connected to a conical air inlet pipe (10). The mounting ring (3) is fixedly set inside the connecting end (7).

3. The indoor ventilation and odor removal device for decoration and construction as described in claim 2, characterized in that, The drive unit includes an electric push rod (11) fixedly connected inside the ventilation housing (1). The output end of the electric push rod (11) is fixedly connected to a push ring (12) slidably connected inside the connection end (7). One side of the push ring (12) is connected to a connector (13) in a ring-shaped manner via a pin. One side of the connector (13) is rotatably connected to the rectifier blade (5) via a pin.

4. The indoor ventilation and odor removal device for decoration and construction according to claim 2, characterized in that, Both the connecting end (7) and the splicing pipe (9) are provided with insertion grooves (14) with the same diameter as the elastic pad (8). The inner arc surface of the elastic pad (8) is parallel to the inner arc surface of the splicing pipe (9). Based on the setting of the insertion groove (14), after the elastic pad (8) and the splicing pipe (9) are inserted into the connecting end (7), the splicing pipe (9), the elastic pad (8) and the inner arc surface of the connecting end (7) are set in parallel.

5. The indoor ventilation and odor removal device for decoration and construction as described in claim 2, characterized in that, The lower surface of the conical air inlet pipe (10) is fixedly connected to a support frame (15) by bolts. The lower surface of the support frame (15) is provided with a moving wheel, and the lower surface of the moving wheel is at the same horizontal line as the lower surface of the ventilation housing (1).

6. The indoor ventilation and odor removal device for decoration and construction according to claim 2, characterized in that, The anti-blocking mechanism includes a movable ring (16) that is slidably disposed inside one of the splicing pipes (9). On one side of the movable ring (16), there are electrostatic adsorption sheets (17) arranged in a ring array with the movable ring (16) as the center, which are used to adsorb dust contained in the air intake inside the splicing pipe (9). The electrostatic adsorption sheets (17) are provided with a gap between them and the inner wall of the splicing pipe (9).

7. The indoor ventilation and odor removal device for decoration and construction as described in claim 6, characterized in that, The anti-blocking mechanism also includes two scraping plates (18) respectively attached to the outer arc surface and inner arc surface of the electrostatic adsorption sheet (17). The two scraping plates (18) are fixedly connected to a connecting block (19) on opposite sides. A moving rod (20) extending to the outside of the conical air inlet pipe (10) is fixedly connected to one side of the connecting block (19). A handle is fixedly connected to one end of the two moving rods (20).

8. The indoor ventilation and odor removal device for decoration and construction as described in claim 6, characterized in that, The connecting assembly includes two linkage rods (21) rotatably connected to one side of the moving ring (16) by a pin. One side of the linkage rod (21) is rotatably connected to two variable diameter blades (4) by a pin. Both inner walls of one of the splicing pipes (9) are longitudinally provided with multiple parallel protrusions (22), and the protrusions (22) are provided on both sides of the moving ring (16). The moving ring (16) is made of elastic material.

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