A plant replacement ventilation dust removal equipment

Abstract

The embodiment of the utility model provides a kind of plant replacement ventilation dust removal equipment, including fan, filtering mechanism and adjusting mechanism;The input of the fan is connected with the filtering mechanism, the filtering mechanism is connected with the adjusting mechanism, the adjusting mechanism includes elbow pipe, swan neck pipe, backing plate, sliding chute, sliding block and air inlet pipe, it is related to industrial ventilation dust removal field.The coordinated work of fan, filtering mechanism and adjusting mechanism solves the defect that traditional fixed ventilation dust removal equipment cannot be adjusted according to different working environment changes.Such equipment has flexibility and adjustability, can be adjusted according to different needs in workshop, improve ventilation efficiency and dust removal effect.

Description

Technical Field

[0001] This utility model relates to the field of industrial ventilation and dust removal, specifically to a factory replacement ventilation and dust removal device. Background Technology

[0002] During industrial production, factories generate large amounts of waste gas and dust. These pollutants not only threaten worker health but also have a serious impact on the environment. Therefore, ventilation and dust removal equipment in factories plays a crucial role in improving air quality and ensuring a safe working environment. Currently, most industrial plants rely on fans, filtration systems, and certain ventilation ducts to complete the emission and purification of waste gas and dust.

[0003] While existing ventilation and dust removal equipment can improve air quality to some extent, most of these devices still have certain limitations in their design. Traditional ventilation and dust removal equipment is mostly a fixed design, which cannot be adjusted according to changes in different working environments. Utility Model Content

[0004] According to an embodiment of this utility model, a factory replacement ventilation and dust removal device is provided. This device is used to solve the technical problems existing in the background art described above.

[0005] In a first aspect, a factory replacement ventilation and dust removal device is provided.

[0006] The ventilation and dust removal equipment for this factory building includes: a fan, a filter mechanism, and an adjustment mechanism; the input end of the fan is connected to the filter mechanism, the filter mechanism is connected to the adjustment mechanism, and the adjustment mechanism includes a bend, a gooseneck tube, a pad, a slide, a slider, and an air inlet pipe;

[0007] The bent tube is connected to the filter mechanism, and the other end of the bent tube is connected to the gooseneck tube. The air inlet pipe is installed on the gooseneck tube, and the air inlet pipe is positioned away from the bent tube on the gooseneck tube. The bent tube is connected to the pad plate, and the slide groove is machined on the pad plate. The slide groove is slidably connected to the slider, and the slider is connected to the gooseneck tube. The connection position between the slider and the gooseneck tube is away from the bent tube.

[0008] Preferably, the adjustment mechanism further includes a protective shell and an operating hole;

[0009] The protective shell is connected to the pad, and the operating hole is machined on the top of the protective shell, allowing the user to move the slider through the operating hole.

[0010] Preferably, it also includes a positioning mechanism for positioning the slider and the gooseneck tube.

[0011] Preferably, the positioning mechanism further includes a top plate, a rotating plate, a locking part, a rubber pad, and a toothed plate;

[0012] The toothed plate is connected to the pad plate, and adjacent toothed blocks on the toothed plate can engage with the snap-fit ​​part. The snap-fit ​​part is machined on the rotating plate, and the rotating plate is rotatably connected to the top plate. The rotating plate and the top plate are connected to the rubber pad, and the top plate is connected to the slider.

[0013] Preferably, the positioning mechanism includes a bracket, a shaft, a bearing, a handle, a cam, and a contact portion;

[0014] The bracket is connected to the slider, the bracket is rotatably connected to the shaft, the handle is mounted on the shaft, the shaft is connected to the cam, the contact part is connected to the rotating plate and is located on the side away from the locking part, the protruding position of the cam can contact the contact part and drive the rotating plate and the locking part to deflect.

[0015] Preferably, it also includes a duct, a first butterfly valve, a first pipe body, and a fresh air duct;

[0016] The duct is connected to the output end of the fan. The duct has two output ports, one of which is connected to the first butterfly valve. The first butterfly valve is connected to the fresh air duct through the first pipe body.

[0017] Preferably, it further includes a second butterfly valve, a second pipe body, and a circulation pipe; the second butterfly valve is connected to another outlet of the conduit, and the second butterfly valve is connected to the circulation pipe through the second pipe body.

[0018] Preferably, the filtration mechanism includes a housing, a door, an outer frame, a filter assembly, a snap-fit ​​component, a protrusion, and a bump;

[0019] The top and bottom of the housing are respectively connected to the input end of the fan and the bend. The protrusion is connected to the door and the connection position is set on the side close to the housing. The protrusion is slidably connected to the inner wall of the housing. The inner side of the protrusion is connected to the outer frame. The outer frame is fitted to the inner wall of the housing. The filter assembly is installed in the outer frame. The protrusion is connected to the door. The snap-fit ​​is rotatably connected to the housing. The snap-fit ​​can be snapped onto the protrusion.

[0020] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0021] 1. This utility model provides a factory ventilation and dust removal device that, through the coordinated operation of a fan, a filtration mechanism, and an adjustment mechanism, solves the problem of traditional fixed ventilation and dust removal devices being unable to adjust to changes in different working environments. Such equipment is flexible and adjustable, and can be modified according to different needs within the factory, improving ventilation efficiency and dust removal effectiveness.

[0022] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0023] The above and other features, advantages, and aspects of the various embodiments of the present invention will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0024] Figure 1 A three-dimensional connection structure diagram of a factory replacement ventilation and dust removal device according to an embodiment of the present invention is shown;

[0025] Figure 2 An exploded view of a factory replacement ventilation and dust removal device according to an embodiment of the present invention is shown;

[0026] Figure 3 A schematic diagram of the connection structure of the adjustment mechanism of a factory replacement ventilation and dust removal device according to an embodiment of the present invention is shown.

[0027] Figure 4 An exploded view of the adjustment mechanism of a factory replacement ventilation and dust removal device according to an embodiment of the present invention is shown.

[0028] Figure 5 A schematic diagram of the connection structure of the positioning mechanism and the chute of the factory replacement ventilation and dust removal equipment according to an embodiment of the present invention is shown.

[0029] Figure 6 A schematic diagram of the connection structure of the positioning mechanism of a factory replacement ventilation and dust removal equipment according to an embodiment of the present invention is shown.

[0030] Figure 7 An exploded view of the positioning mechanism of a factory replacement ventilation and dust removal device according to an embodiment of the present invention is shown.

[0031] Figure 8 A schematic diagram of the connection structure of the positioning mechanism and the slider of the factory replacement ventilation and dust removal equipment according to an embodiment of the present invention is shown.

[0032] Figure 9A schematic diagram of the connection structure of the filter mechanism of a factory replacement ventilation and dust removal equipment according to an embodiment of the present invention is shown.

[0033] Figure 10 An exploded view of the filtration mechanism of a factory replacement ventilation and dust removal device according to an embodiment of the present invention is shown.

[0034] Figure 11 A front view structural schematic diagram of the housing and protrusions of a factory replacement ventilation and dust removal device according to an embodiment of the present invention is shown.

[0035] The attached figures are labeled as follows:

[0036] 1-Fan, 2-Filter mechanism, 201-Box body, 202-Door body, 203-Outer frame, 204-Filter assembly, 205-Snap-fit ​​part, 206-Protrusion, 207-Protrusion block, 3-Adjustment mechanism, 301-Slider, 302-Slide groove, 303-Pad plate, 304-Gooseneck tube, 305-Inlet pipe, 306-Protective shell, 307-Operating hole, 308-Bend, 4-Positioning mechanism, 401-Shaft body, 402-Handle, 403-Bracket, 404-Bearing, 405-Cam, 406-Contact part, 407-Rotating plate, 408-Snap-fit ​​part, 409-Top plate, 410-Gear plate, 411-Rubber pad, 5-Conduit, 6-First butterfly valve, 7-Second butterfly valve, 8-First pipe body, 9-Second pipe body, 10-Fresh air duct, 11-Circulation pipe. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0039] like Figures 1 to 11As shown, the ventilation and dust removal equipment in this factory mainly consists of a fan 1, a filter mechanism 2, and an adjustment mechanism 3. The fan 1, as the core component of the ventilation and dust removal system, is responsible for providing airflow. The input end of the fan 1 is connected to the filter mechanism 2, and the output end of the filter mechanism 2 is connected to the air inlet of the fan 1. The air is purified and dust-removed by the filter mechanism 2. The inlet end of the filter mechanism 2 is connected to the adjustment mechanism 3, which consists of a bend 308, a gooseneck tube 304, a pad 303, a slide 302, a slider 301, and an air inlet pipe 305. The function of the adjustment mechanism 3 is to adjust the air inlet position to achieve the best air treatment effect.

[0040] One end of the bend 308 is fixedly connected to the filter mechanism 2, and the other end is connected to the gooseneck tube 304. The design of the bend 308 ensures that the air entering the filter mechanism 2 from the gooseneck tube 304 can undergo reasonable flow redirection, effectively preventing large particles from directly impacting the filter mechanism 2, thereby avoiding unnecessary losses caused by airflow impact. The gooseneck tube 304 connects the bend 308 and the air inlet pipe 305, which helps guide the airflow and provides sufficient space for more stable airflow. The air inlet pipe 305 is installed on one side of the gooseneck tube 304, away from the bend 308. The function of the air inlet pipe 305 is to draw in air from the outside and introduce it into the regulating mechanism 3, maintaining airflow during equipment operation. The pad 303 is connected to the bend 308, serving a fixing function and providing a stable connection platform. A groove 302 is machined on the pad 303 and slidably connected to a slider 301. The slider 301 is connected to the gooseneck tube 304. By sliding the slider 301 in the groove 302, the length of the gooseneck tube 304 can be adjusted, thereby adjusting the air inlet position. The connection position between the slider 301 and the gooseneck tube 304 is away from the bend 308. The adjustment mechanism 3 of this equipment can flexibly adjust the air inlet position under different working conditions, ensuring the high efficiency and stability of the equipment.

[0041] In practical use, when the factory needs dust removal and ventilation, after starting the fan 1, air enters the gooseneck tube 304 through the intake pipe 305. Operators can manually or automatically adjust the slider 301 according to different environmental needs, causing the gooseneck tube 304 to move radially. The flexibility of the gooseneck tube 304 allows for adaptive adjustment in the vertical direction, thereby adjusting the air intake position. The bend 308 guides the air to the filter mechanism 2, which filters the incoming air, removing dust, impurities, and other harmful substances to ensure air cleanliness. The filtered air then enters the fan 1 for subsequent use.

[0042] In this embodiment, to further facilitate operation, the adjustment mechanism 3 is also provided with a protective shell 306 and an operating hole 307. The protective shell 306 is installed on the outside of the adjustment mechanism 3 and fixedly connected to the pad 303. It has the same width as the pad 303 and serves to protect the adjustment components. The design of the protective shell 306 not only effectively protects the internal adjustment mechanism 3 from external contamination and physical damage, but also ensures the safety and stability of the equipment during operation. The operating hole 307 is machined on the top of the protective shell 306, allowing the user to move the slider 301. The limiting design of the operating hole 307 allows the user to easily move the slider 301, thereby adjusting the relative position between the slider 301 and the slide groove 302, and thus adjusting the length of the gooseneck tube 304 and changing the position where air enters.

[0043] In actual use, when it is necessary to adjust the position of the air intake pipe 305, the operator applies a pushing force along the direction of the slide groove 302 through the operating hole 307 on the protective shell 306 to move the slider 301, causing the gooseneck tube 304 to extend and retract synchronously. After observing that the air intake pipe 305 has reached the target position, the operator stops moving the slider 301. The edge of the operating hole 307 can be equipped with a rubber edging to protect the operator's hands from scratches.

[0044] In this embodiment, to ensure the precise position of the slider 301 and the gooseneck tube 304, the plant replacement ventilation and dust removal equipment is further provided with a positioning mechanism 4, which can ensure that the slider and the gooseneck tube 304 are precisely aligned during the adjustment process, improve the accuracy of the air intake direction, and prevent deviation caused by improper operation or vibration.

[0045] In actual use, when operators need to perform ventilation and dust removal, the positioning mechanism 4 accurately positions the slider 301 and the gooseneck tube 304 at different positions to ensure that the air entry position meets the requirements.

[0046] In this embodiment, the positioning mechanism 4, to achieve precise positioning, comprises a top plate 409, a rotating plate 407, a locking part 408, a rubber pad 411, and a toothed plate 410 assembly. Two parallel toothed plates 410 are longitudinally fixed to the surface of the pad 303. The surface has multiple spaced toothed blocks, and the gaps between the toothed blocks form locking positions. The main function of these locking positions is to achieve accurate positioning through cooperation with the locking part 408, ensuring the positional accuracy of other components. The rotating plate 407 is rotatably connected to the top plate 409, providing a certain degree of rotational flexibility to ensure that the rotating plate 407 can rotate around the top plate 409. The rotating plate 407 has protruding locking parts 408 machined on it, which can mesh with the gaps between the toothed blocks of the toothed plate 410, providing a stable connection during positioning. The locking of adjacent toothed blocks makes positioning more precise, thereby ensuring the stability of the overall structure. A rubber pad 411 is placed between the rotating plate 407 and the top plate 409 to buffer the impact force when the rotating plate 407 rotates and provide frictional resistance, ensuring the stability of the engagement and reducing noise, thus guaranteeing the stability and accuracy of the equipment during long-term operation. The top plate 409 is fixedly connected to the slider 301 and is made of a sturdy material such as steel plate or other alloy material, capable of withstanding the force brought by rotation. The linear movement of the slider 301 drives the entire positioning mechanism 4 to move.

[0047] In actual use, the positioning mechanism 4 should first be installed in the correct position on the equipment, ensuring that the top plate 409 is firmly connected to the slider 301, and that the rotating plate 407 is firmly connected to the top plate 409, ensuring that the teeth on the toothed plate 410 can smoothly engage with the locking part 408. During positioning adjustment, the operator manually or by driving the slider 301 to move, simultaneously moving the positioning mechanism 4. The locking part 408 of the rotating plate 407 will automatically engage with the adjacent tooth gap along with the tooth shape of the toothed plate 410, with each engagement corresponding to a fixed position. When the equipment needs fine-tuning, external force is applied to cause the rotating plate 407 to overcome the friction of the rubber pad 411, deflecting it out of the current tooth gap, sliding to the next tooth position, and then resetting and locking it. When the equipment is stationary, to prevent the slider 301 from being accidentally displaced, the engagement between the locking part 408 and the toothed plate 410 is kept self-locked under the pressure of the rubber pad 411. If unlocking is required, push the slider 301 until the rotating plate 407 is completely disengaged from the current toothed block. At this time, the rubber pad 411 is compressed, allowing continuous sliding.

[0048] In this embodiment, to facilitate the operation of the positioning mechanism 4, a bracket 403, a shaft 401, a bearing 404, a handle 402, a cam 405, and a contact portion 406 are further provided. The bracket 403 is made of metal, has strong support capacity and durability, and is connected to the slider 301 to ensure the stability of the positioning mechanism during movement. The bracket 403 and the shaft 401 are rotatably connected via the bearing 404, allowing the shaft 401 to rotate freely inside the bracket 403. The rotatable connection between the bracket 403 and the shaft 401 provides the rotation function of the positioning mechanism 4, facilitating adjustment. The handle 402 is fixedly installed at both ends of the shaft 401, and its design ensures that the user can easily operate it manually. The shaft 401 is connected to the cam 405, which is an eccentric wheel structure. When the cam 405 rotates, the part with the largest radial dimension (i.e., the protruding position) pushes or pulls towards the contact portion 406, thereby changing the position of the contact portion 406.

[0049] In actual use, the operator holds the handles 402 at both ends of the shaft 401 and applies a clockwise rotational force, causing the shaft 401 to rotate around the bearing 404. The rotation of the shaft 401 drives the cam 405 connected to it to rotate synchronously. When the protruding part of the cam 405 rotates to fit against the contact part 406, the contact part 406 rotates, and at the same time, the rotating plate 407 rotates, thereby causing the locking part 408 on the rotating plate 407 to disengage from the toothed plate 410. At this time, the handle 402 can be pulled to move laterally. After reaching the designated position, the handle 402 can be turned counterclockwise to release it. Since the rubber pad 411 is in a compressed state at this time, when the rubber pad 411 loses external support, it can drive the locking part 408 to engage with the other tooth blocks of the toothed plate 410 for fixation, realizing the positioning of the intake pipe 305 at different positions. The whole process is easy for the user to operate.

[0050] In this embodiment, to exhaust the filtered air from the factory to the outside, the equipment is equipped with a duct 5, a first butterfly valve 6, a first pipe body 8, and a fresh air duct 10. The fan 1 provides a powerful airflow output to the equipment. The duct 5 is sealed to its output end, guiding the airflow. The duct 5 has two outlets, each connected to a different pipe to adjust the airflow direction, distributing the airflow in two different directions to ensure air circulation for different purposes. One outlet of the duct 5 is connected to the first butterfly valve 6, which is connected to the fresh air duct 10 via the first pipe body 8. This valve controls the opening and closing of the airflow. By adjusting the opening of the first butterfly valve 6, the airflow direction and flow rate can be precisely controlled to adapt to different working requirements. The first pipe body 8 connects the first butterfly valve 6 to the fresh air duct 10, providing guidance and support to ensure smooth airflow into the duct 10. The fresh air duct 10 extends to the ventilated areas of the factory, exhausting filtered and purified air to meet the environmental standards for factory air emissions.

[0051] In actual use, when it is necessary to exhaust air from the factory, the operator should first close the second butterfly valve 7 to cut off the circulation pipe 11; then open the first butterfly valve 6 and turn on the fan 1, so that the airflow output by the fan 1 enters the fresh air duct 10 through the duct 5 and the first pipe body 8. The fresh air duct 10 can be directly connected to the wall or to external pipes, depending on the actual structure of the factory, so as to smoothly exhaust the purified air from the factory.

[0052] In this embodiment, to achieve air recycling within the factory, the present invention further includes a second butterfly valve 7, a second pipe body 9, and a circulation pipe 11. The second butterfly valve 7 is located at another outlet of the conduit 5, allowing adjustment of the airflow on / off state and flow rate according to requirements under different operating conditions. By adjusting the opening of the second butterfly valve 7, the distribution of airflow can be precisely controlled, allowing air to flow into the circulation pipe 11 through the second pipe body 9. The circulation pipe 11 reintroduces the filtered and dust-removed air into the factory ventilation system or other areas requiring air, achieving air recycling, ensuring that air quality does not decline and preventing excessive external air pollution from entering. This helps improve equipment efficiency and reduce energy waste.

[0053] In actual use, first close the first butterfly valve 6 and open the second butterfly valve 7. The opening angle of the second butterfly valve 7 can be adjusted as needed to control the airflow. Then turn on the fan 1, and the air will enter the circulation pipe 11 through the second pipe 9 and re-participate in the ventilation and dust removal process. This setting is suitable for use when the outdoor air quality is poor (such as smog) or when energy saving and heat preservation are required.

[0054] In this embodiment, the filter mechanism 2, as an important component of the factory's ventilation and dust removal equipment, mainly consists of a housing 201, a door 202, an outer frame 203, a filter assembly 204, a snap-fit ​​component 205, a protrusion 206, and a bump 207. The housing 201 is the outer shell of the entire filter mechanism 2, connected to the input end of the fan 1 at the top and to the bend 308 at the bottom, forming an airflow channel. The door 202 is an openable component, mounted at the front of the housing 201. A bump 207 is provided on the door 202, fixed to the side of the door 202 near the housing 201, and sliding along the inner wall of the housing 201, facilitating the opening and closing of the door 202. The outer frame 203 is fixed inside the bump 207 and fits against the inner wall of the housing 201, ensuring good sealing. Its function is to fix the filter assembly 204 and securely install it inside the housing. A filter assembly 204 (which can be a filter screen or a cloth bag) is installed inside the outer frame 203 to filter impurities such as iron filings. A snap-fit ​​connector 205 is rotatably connected to the housing 201. The snap-fit ​​connector 205 is designed to snap onto the protrusion 206, ensuring the stable opening and closing of the door 202. The protrusion 206 is located on the door 202 to help secure the door and ensure its sealing effect. When the door 202 is closed, the protrusion 206 engages with the snap-fit ​​connector 205, locking the door 202 and preventing air leakage.

[0055] In actual use, when the equipment needs to be operated, the operator starts the fan 1, and the dust-laden gas begins to pass through the filtration mechanism. The airflow enters the housing 201 from the fan inlet, and before entering the filter assembly 204, it needs to pass through the flow channel between the door 202 and the housing. After being purified by the filter assembly 204, it enters the fan and is discharged or enters the circulation system as needed. When it is necessary to replace or clean a damaged or excessively contaminated filter assembly 204, the operator can rotate the latch 205 to disengage it from the protrusion 206, thereby unlocking the door 202. The door 202 can slide along the inner wall of the housing 201 under the action of the protrusion 207, allowing convenient internal operations after opening. After opening the door, the filter assembly 204 inside the outer frame 203 can be replaced or cleaned as needed. The new filter assembly 204 is installed inside the outer frame 203, ensuring that its secure position is consistent with the original assembly. After the filter assembly 204 is installed, push the outer frame 203 into the housing 201, ensuring it fits snugly against the inner wall. Close the door 202, allowing the snap-fit ​​205 to re-engage with the protrusion 206, ensuring the door 202 is sealed and locked. After replacing the filter assembly 204, check that all connections are secure, ensuring there are no air leaks at the connection between the housing 201 and the fan 1. Also, ensure that the snap-fit ​​205 and protrusion 206 are functioning properly to avoid affecting equipment performance due to unstable connections.

[0056] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A factory ventilation and dust removal device, characterized in that, It includes a fan (1), a filter mechanism (2) and an adjustment mechanism (3); the input end of the fan (1) is connected to the filter mechanism (2), the filter mechanism (2) is connected to the adjustment mechanism (3), and the adjustment mechanism (3) includes a bend (308), a gooseneck tube (304), a pad (303), a slide (302), a slider (301) and an air inlet pipe (305); The bend (308) is connected to the filter mechanism (2), and the other end of the bend (308) is connected to the gooseneck tube (304). The air inlet pipe (305) is installed on the gooseneck tube (304), and the air inlet pipe (305) is positioned on the gooseneck tube (304) away from the bend (308). The bend (308) is connected to the pad (303), and the slide groove (302) is machined on the pad (303). The slide groove (302) is slidably connected to the slider (301), and the slider (301) is connected to the gooseneck tube (304). The connection position of the slider (301) and the gooseneck tube (304) is away from the bend (308).

2. The factory replacement ventilation and dust removal equipment according to claim 1, characterized in that, The adjustment mechanism (3) also includes a protective shell (306) and an operating hole (307). The protective shell (306) is connected to the pad (303), and the operating hole (307) is machined on the upper part of the protective shell (306). The user can move the slider (301) through the operating hole (307).

3. The factory replacement ventilation and dust removal equipment according to claim 2, characterized in that, It also includes a positioning mechanism (4) for positioning the slider (301) and the gooseneck tube (304).

4. The factory replacement ventilation and dust removal equipment according to claim 3, characterized in that, The positioning mechanism (4) also includes a top plate (409), a rotating plate (407), a snap-fit ​​part (408), a rubber pad (411), and a toothed plate (410). The toothed plate (410) is connected to the pad plate (303). Adjacent toothed blocks on the toothed plate (410) can be engaged with the snap-fit ​​part (408). The snap-fit ​​part (408) is machined on the rotating plate (407). The rotating plate (407) is rotatably connected to the top plate (409). The rotating plate (407) and the top plate (409) are connected to the rubber pad (411). The top plate (409) is connected to the slider (301).

5. The factory replacement ventilation and dust removal equipment according to claim 4, characterized in that, The positioning mechanism (4) includes a bracket (403), a bearing (404), a shaft (401), a handle (402), a cam (405), and a contact part (406). The bracket (403) is connected to the slider (301), the bracket (403) is rotatably connected to the shaft (401), the handle (402) is mounted on the shaft (401), the shaft (401) is connected to the cam (405), the contact part (406) is connected to the rotating plate (407) and is located on the side away from the snap-fit ​​part (408), the protruding position of the cam (405) can contact the contact part (406) and drive the rotating plate (407) and the snap-fit ​​part (408) to deflect.

6. The factory replacement ventilation and dust removal equipment according to claim 1, characterized in that, It also includes a conduit (5), a first butterfly valve (6), a first pipe body (8), and a fresh air duct (10); The duct (5) is connected to the output end of the fan (1). The duct (5) has two output ports, one of which is connected to the first butterfly valve (6). The first butterfly valve (6) is connected to the fresh air duct (10) through the first pipe body (8).

7. The factory replacement ventilation and dust removal equipment according to claim 6, characterized in that, It also includes a second butterfly valve (7), a second pipe body (9) and a circulation pipe (11); the second butterfly valve (7) is connected to another outlet of the conduit (5), and the second butterfly valve (7) is connected to the circulation pipe (11) through the second pipe body (9).

8. The factory replacement ventilation and dust removal equipment according to claim 1, characterized in that, The filter mechanism (2) includes a housing (201), a door (202), an outer frame (203), a filter assembly (204), a snap-fit ​​component (205), a protrusion (206), and a bump (207). The top and bottom of the housing (201) are connected to the input end of the fan (1) and the bend (308) respectively. The protrusion (207) is connected to the door (202) and the connection position is set on the side close to the housing (201). The protrusion (207) is slidably connected to the inner wall of the housing (201). The inner side of the protrusion (207) is connected to the outer frame (203). The outer frame (203) is attached to the inner wall of the housing (201). The filter assembly (204) is installed in the outer frame (203). The protrusion (206) is connected to the door (202). The snap-fit ​​(205) is rotatably connected to the housing (201). The snap-fit ​​(205) can be snapped onto the protrusion (206).

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