Elevator cross flow fan

Abstract

The utility model discloses an elevator cross flow fan which comprises an air blowing mechanism and an air draft mechanism, air outlets and air inlets of the air blowing mechanism and the air draft mechanism are provided with filtering mechanisms, one end of a placing platform is connected with a moving seat in a sliding mode, and the inner side wall, opposite to the moving seat, of the placing platform is provided with a first limiting inserting block. A second limiting insertion block is arranged on the moving seat, a first filter screen is placed in the placing platform, and limiting insertion grooves matched with the first limiting insertion block and the second limiting insertion block are formed in the two ends of the first filter screen correspondingly; when the first filter screen is placed in the placement platform, the first limiting insertion block and the second limiting insertion block are inserted into the limiting insertion grooves in the two ends of the first filter screen; a second filter screen is inserted into the mounting base, a mounting slot is formed in the mounting base, and a mounting insertion block is arranged on the side edge of the second filter screen; and when the second filter screen is inserted into the mounting base, the mounting insertion block and the mounting insertion groove are in an insertion connection state. The device effectively improves the air quality in the elevator car.

Description

Technical Field

[0001] This utility model relates to the field of crossflow fan technology, specifically to an elevator crossflow fan. Background Technology

[0002] Elevator cars, due to their enclosed environment, suffer from poor air circulation, making passengers feel stuffy, especially in hot weather. The traditional solution is to install cross-flow fans in the elevator car to achieve cooling and air circulation. However, these cross-flow fans are usually single-unit structures that only have a blowing function, not an exhaust function. To extract the air from inside the elevator car, additional exhaust equipment must be installed, which is both cumbersome and costly.

[0003] Chinese patent (authorization announcement number CN218717570U) discloses a crossflow fan with parallel airflow and exhaust components. By integrating a blowing assembly and an exhaust assembly onto a single crossflow fan, the blowing assembly draws air from the top of the elevator car and blows it into the car's interior, while the exhaust assembly draws air from inside the elevator car and blows it out to the space above the car, achieving air circulation. However, this crossflow fan lacks a filtration mechanism during the blowing and exhaust processes, which may draw dust from the outside air into the elevator car, thus reducing the air quality inside the elevator.

[0004] Therefore, the present invention aims to provide an elevator constant flow fan to solve the above problems. Utility Model Content

[0005] To address the aforementioned issues, an elevator crossflow fan is provided. By installing a placement platform and a mounting base on the crossflow fan, a first filter is placed in the placement platform, and a second filter is inserted into the mounting base. Whether air enters or is drawn out of the elevator car, it undergoes two filtrations. This double filtration solves the problem of dust from the outside air being drawn into the elevator car due to the lack of a filtration mechanism, thus reducing the air quality inside the elevator.

[0006] To address the problems of existing technologies, this utility model provides an elevator crossflow fan, including a blower mechanism and an exhaust mechanism. Both the air outlet and air inlet of the blower mechanism and the exhaust mechanism are equipped with a filter mechanism. The filter mechanism includes a placement platform and a mounting base. The placement platform is located at the air inlet of the blower mechanism and the air outlet of the exhaust mechanism, and the mounting base is located at the air outlet of the blower mechanism and the air inlet of the exhaust mechanism. A movable seat is slidably connected to one end of the placement platform. A first limiting block is provided on the inner sidewall of the placement platform opposite to the movable seat. The movable seat is equipped with... The system includes a second limiting block and a first filter screen placed within a placement platform. Both ends of the first filter screen have limiting slots that respectively mate with the first and second limiting blocks. When the first filter screen is placed within the placement platform, the first and second limiting blocks are inserted into the limiting slots at both ends of the first filter screen. A second filter screen is inserted into a mounting base, which has a mounting slot. A mounting block is located on the side of the second filter screen. When the second filter screen is inserted into the mounting base, the mounting block and the mounting slot are in a plugged-in state.

[0007] Preferably, a guide groove is provided at one end of the placement platform that abuts against the movable seat, and a guide rod is provided at one end of the movable seat that abuts against the placement platform. The guide rod is inserted into the guide groove and a return spring is sleeved on the guide rod.

[0008] Preferably, the placement platform and the mounting base are provided with a protective mechanism, which includes a first grid plate and a second grid plate; the first grid plate is hinged to the placement platform, and the second grid plate is hinged to the mounting base.

[0009] Preferably, a fixing sleeve is provided at the end of the first grid plate and the placement platform away from the hinge part, and a fixing pin is inserted in the fixing sleeve; when the first grid plate covers the placement platform, the fixing pin is simultaneously inserted into the fixing sleeve on the first grid plate and the placement platform; the second grid plate and the mounting base are connected by a snap-fit ​​connection.

[0010] Preferably, the surfaces of the first and second filter screens are provided with a cleaning mechanism; the cleaning mechanism includes an upper cleaning plate, a lower cleaning plate, and a connecting block; the upper cleaning plate abuts against the surface of the first filter screen, and the lower cleaning plate abuts against the surface of the second filter screen; the upper cleaning plate and the lower cleaning plate are fixedly connected by the connecting block.

[0011] Preferably, a mounting platform is provided on each side of the top of the crossflow fan; a through hole is provided on the mounting platform, a threaded rod is inserted through the through hole, a rotating sleeve is provided at one end of the threaded rod, and an anti-detachment block is provided at the other end of the threaded rod; a servo motor is also provided at the top of the crossflow fan, and a rotating shaft is provided on the output shaft of the servo motor, which drives the rotating sleeve to rotate through a synchronous belt; a movable block is provided at the bottom of the upper cleaning plate, and a threaded hole is provided on the movable block, which is threadedly connected to the threaded rod through the threaded hole.

[0012] Preferably, the placement platform and mounting base are provided with a dust collection box at the end away from the cleaning mechanism.

[0013] Preferably, the dust collection box includes an upper collection box and a lower collection box; the end of the placement platform and the mounting base away from the cleaning mechanism is provided with a plug-in block, and the upper collection box and the lower collection box are provided with plug-in slots. The upper collection box is installed on the side of the placement platform through the plug-in block next to the placement platform, and the lower collection box is installed on the side of the mounting base through the plug-in block next to the mounting base. At this time, the plug-in block and the plug-in slot are in the plugged-in state.

[0014] The advantages of this utility model compared to the prior art are:

[0015] 1. This utility model effectively prevents dust and other impurities from entering or leaving the fan mechanism by setting filter mechanisms at both the air outlet and air inlet of the blower and exhaust mechanisms. This ensures that the elevator crossflow fan can continuously provide clean air during operation, avoids the impact on the air quality inside the elevator during long-term air supply and exhaust, and improves the comfort of the elevator environment.

[0016] 2. The cleaning mechanism in this utility model is driven by a servo motor to rotate the threaded rod, which in turn drives the upper and lower cleaning plates to move synchronously. This can effectively and thoroughly remove dust and impurities from the surfaces of the first and second filter screens without the need for manual cleaning, greatly improving cleaning efficiency and convenience, and also extending the service life of the filter screens.

[0017] 3. The dust collection box design in this utility model effectively collects and processes dust swept off the filter by the cleaning mechanism, preventing it from scattering and affecting the overall cleanliness and operating efficiency of the elevator crossflow fan. Users only need to periodically remove the dust collection box for cleaning to easily maintain the cleanliness and efficient operation of the elevator crossflow fan, reducing maintenance costs. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of an elevator crossflow fan according to the present invention.

[0019] Figure 2This is a three-dimensional schematic diagram of the blower and exhaust mechanism of an elevator crossflow fan according to this utility model.

[0020] Figure 3 yes Figure 2 Enlarged view of a portion of point A in the middle.

[0021] Figure 4 This is a three-dimensional schematic diagram of a platform for placing a cross-flow fan in an elevator according to this utility model.

[0022] Figure 5 This is a cross-sectional view of a guide rod of an elevator crossflow fan of the present invention, inserted into a guide groove.

[0023] Figure 6 This is an exploded view of the mounting base for an elevator crossflow fan according to this utility model.

[0024] Figure 7 This is a three-dimensional schematic diagram of the upper collection box of an elevator crossflow fan according to this utility model.

[0025] Figure 8 This is a three-dimensional schematic diagram of a cleaning mechanism for an elevator crossflow fan according to this utility model.

[0026] Figure 9 yes Figure 8 Enlarged view of section B in the middle.

[0027] The diagram is labeled as follows: 1. Blower mechanism; 2. Exhaust mechanism; 3. Filter mechanism; 31. Placement platform; 311. Guide groove; 32. First filter screen; 33. First limiting block; 34. Movable seat; 341. Second limiting block; 342. Guide rod; 35. Mounting base; 351. Mounting slot; 36. Second filter screen; 361. Mounting block; 4. Protective mechanism; 41. First grid plate; 411. Fixing sleeve; 412. Fixing pin; 42. Second grid plate; 5. Cleaning mechanism; 51. Upper cleaning plate; 52. Lower cleaning plate; 53. Connecting block; 54. Movable block; 55. Mounting platform; 56. Threaded rod; 57. Rotating sleeve; 6. Dust collection box; 61. Upper collection box; 62. Lower collection box; 63. Insertion block; 64. Insertion groove. Detailed Implementation

[0028] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0029] Reference Figures 1-9As shown: An elevator crossflow fan includes a blower mechanism 1 and an exhaust mechanism 2. Both the blower mechanism 1 and the exhaust mechanism 2 have a filter mechanism 3 at their air outlet and air inlet. The filter mechanism 3 includes a placement platform 31 and a mounting base 35. The placement platform 31 is located at the air inlet of the blower mechanism 1 and the air outlet of the exhaust mechanism 2, and the mounting base 35 is located at the air outlet of the blower mechanism 1 and the air inlet of the exhaust mechanism 2. A movable seat 34 is slidably connected to one end of the placement platform 31. A first limiting block 33 is provided on the inner sidewall of the placement platform 31 opposite to the movable seat 34, and a second limiting block 341 is provided on the movable seat 34. A first filter screen 32 is placed inside the platform 31. The first filter screen 32 has limiting slots at both ends that are adapted to the first limiting block 33 and the second limiting block 341, respectively. When the first filter screen 32 is placed inside the platform 31, the first limiting block 33 and the second limiting block 341 are inserted into the limiting slots at both ends of the first filter screen 32. A second filter screen 36 is inserted inside the mounting base 35. The mounting base 35 has a mounting slot 351. The side of the second filter screen 36 is provided with a mounting block 361. When the second filter screen 36 is inserted inside the mounting base 35, the mounting block 361 and the mounting slot 351 are in a plugged-in state.

[0030] In existing technology, no filter mechanism 3 is installed at the air outlet and air inlet of the blower and exhaust device. Since the elevator is a closed system, long-term air supply and exhaust may lead to a decrease in air quality inside the elevator. To address this issue, the elevator crossflow fan includes a blower mechanism 1 and an exhaust mechanism 2, which work together to promote airflow. Filter mechanisms 3 are installed at the air outlet and air inlet of both the blower mechanism 1 and the exhaust mechanism 2 to ensure the cleanliness of the airflow, thereby avoiding the impact on the air quality inside the elevator during long-term air supply and exhaust. A placement platform 31 is provided at the air inlet of the blower mechanism 1 and the air outlet of the exhaust mechanism 2, while a mounting base 35 is provided at the air outlet of the blower mechanism 1 and the air inlet of the exhaust mechanism 2.

[0031] When the fan is running, the blower mechanism 1 draws in outside air, which first passes through the placement platform 31 at its air inlet. A first filter 32 is placed within the placement platform 31. Once the first filter 32 is correctly positioned, a first limiting block 33 and a second limiting block 341 insert into their corresponding limiting slots, thus securely fixing the first filter 32 and preventing it from shifting or falling off during airflow. Therefore, the air entering the blower mechanism 1 is first filtered by the first filter 32, removing impurities and dust.

[0032] The air processed by the blower mechanism 1 is then blown out, passing through the mounting base 35 at the air outlet of the blower mechanism 1. A second filter 36 is inserted into the mounting base 35. Therefore, the blown air passes through the second filter 36 again before leaving the blower mechanism 1, further ensuring the cleanliness of the air.

[0033] Meanwhile, the exhaust mechanism 2 is also operating, drawing in air from the other side. This air first passes through the mounting base 35 at its air inlet, and is filtered by the second filter 36 to remove impurities. Then, the purified air enters the interior of the exhaust mechanism 2, and finally passes through the placement platform 31 at its air outlet, is filtered again by the first filter 32, and is finally discharged.

[0034] Throughout the process, the presence of the filter mechanism 3 effectively prevents dust and other impurities from entering or leaving the fan mechanism, thereby maintaining the efficient operation of the elevator crossflow fan and the continuous cleanliness of the air.

[0035] Reference Figures 1-5 As shown: The placement platform 31 has a guide groove 311 at one end that abuts against the movable seat 34, and the movable seat 34 has a guide rod 342 at one end that abuts against the placement platform 31. The guide rod 342 is inserted into the guide groove 311 and a return spring is sleeved on the guide rod 342.

[0036] When an external force is applied to the movable seat 34, causing it to move along the guide groove 311, the placement platform 31 loses its limiting function on the first filter screen 32. At this time, the user can disassemble and replace the first filter screen 32. After replacement, when no external force is applied, the return spring will spring the movable seat 34 back to its initial position. In this way, even without external force, the movable seat 34 can remain stable, ensuring that the first filter screen 32 is firmly fixed in the placement platform 31.

[0037] Reference Figures 1-6 As shown: a protective mechanism 4 is provided on the placement platform 31 and the mounting base 35. The protective mechanism 4 includes a first grid plate 41 and a second grid plate 42. The first grid plate 41 is hinged to the placement platform 31, and the second grid plate 42 is hinged to the mounting base 35.

[0038] The first grid plate 41 and the second grid plate 42 can not only effectively prevent external objects or personnel from accidentally entering the fan and causing safety hazards, but also block dust and debris from entering to a certain extent, keeping the inside of the fan clean and the working environment tidy.

[0039] Meanwhile, when maintenance or replacement of internal fan components is required, users can easily open the grille to perform the necessary operations. After the operations are completed, the grille can quickly return to its original position and continue to perform its protective function.

[0040] Reference Figures 1-4 As shown: The first grid plate 41 and the placement platform 31 are provided with a fixing sleeve 411 at the end away from the hinge part, and a fixing pin 412 is inserted into the fixing sleeve 411; when the first grid plate 41 covers the placement platform 31, the fixing pin 412 is simultaneously inserted into the fixing sleeve 411 on the first grid plate 41 and the placement platform 31; the second grid plate 42 and the mounting base 35 are connected by a snap-fit ​​connection.

[0041] When the first grid plate 41 is closed on the placement platform 31, the user can insert the fixing pin 412 into the corresponding fixing sleeve 411 to achieve a stable connection between the first grid plate 41 and the placement platform 31. This design not only effectively prevents the first grid plate 41 from accidentally opening during fan operation, but also ensures that the internal components of the fan are adequately protected.

[0042] The second grid plate 42 and the mounting base 35 are connected by a snap-fit ​​mechanism, which allows the second grid plate 42 to be easily attached to the mounting base 35 and to be easily removed when needed. When the second grid plate 42 is snapped onto the mounting base 35, it forms a tight barrier, effectively preventing external objects or dust from entering the fan.

[0043] Reference Figures 1-9 As shown: The first filter screen 32 and the second filter screen 36 are provided with a cleaning mechanism 5; the cleaning mechanism 5 includes an upper cleaning plate 51, a lower cleaning plate 52 and a connecting block 53; the upper cleaning plate 51 abuts against the surface of the first filter screen 32, and the lower cleaning plate 52 abuts against the surface of the second filter screen 36; the upper cleaning plate 51 and the lower cleaning plate 52 are fixedly connected by the connecting block 53.

[0044] The upper cleaning plate 51 is tightly fitted to the surface of the first filter screen 32, while the lower cleaning plate 52 is in close contact with the surface of the second filter screen 36. This design ensures that the cleaning mechanism 5 can thoroughly and effectively remove dust and impurities from the surfaces of the first filter screen 32 and the second filter screen 36.

[0045] The connecting block 53 serves as a fixed connection between the upper cleaning plate 51 and the lower cleaning plate 52, enhancing the overall stability of the cleaning mechanism 5 and enabling them to move synchronously during the cleaning process. When the user needs to clean the filter, simply push either the upper cleaning plate 51 or the lower cleaning plate 52, and they will slide along the surface of the filter, removing dust and impurities from it.

[0046] Reference Figure 8 and Figure 9As shown: a mounting platform 55 is provided on each side of the top of the crossflow fan; a through hole is provided on the mounting platform 55, and a threaded rod 56 is inserted through the through hole. A rotating sleeve 57 is provided at one end of the threaded rod 56, and an anti-detachment block is provided at the other end of the threaded rod 56; a servo motor is also provided at the top of the crossflow fan, and a rotating shaft is provided on the output shaft of the servo motor. The rotating shaft drives the rotating sleeve 57 to rotate through a synchronous belt; a movable block 54 is provided at the bottom of the upper cleaning plate 51. A threaded hole is provided on the movable block 54, and the movable block 54 is threadedly connected to the threaded rod 56 through the threaded hole.

[0047] Both mounting platforms 55 have through holes through which the threaded rod 56 passes and is fixed. One end of the threaded rod 56 is equipped with a rotating sleeve 57 for connecting to the timing belt, and the other end of the threaded rod 56 is provided with an anti-detachment block to prevent the threaded rod 56 from falling off during rotation.

[0048] Meanwhile, a rotating shaft is connected to the output shaft of the servo motor, and the rotating shaft is connected to the rotating sleeve 57 at one end of the threaded rod 56 via a synchronous belt. When the servo motor starts and drives the output shaft to rotate, the rotating shaft will rotate accordingly, which in turn drives the rotating sleeve 57 to rotate the threaded rod 56 via the synchronous belt.

[0049] The bottom of the upper cleaning plate 51 is provided with a movable block 54, and the movable block 54 has a threaded hole that matches the threaded rod 56. When the threaded rod 56 rotates under the drive of the servo motor, the movable block 54 at the bottom of the upper cleaning plate 51 will move along the threaded rod 56, thereby cleaning the first filter screen 32. At the same time, the lower cleaning plate 52 cleans the second filter screen 36 simultaneously.

[0050] Reference Figures 1-9 As shown: The placement platform 31 and the mounting base 35 are provided with a dust collection box 6 at the end away from the cleaning mechanism 5.

[0051] When the cleaning mechanism 5 starts working, the upper cleaning plate 51 and the lower cleaning plate 52 will slide along the surfaces of the first filter screen 32 and the second filter screen 36 respectively to remove the attached dust and impurities.

[0052] The dust collection box 6 can effectively intercept and collect these falling dust and impurities, preventing them from scattering everywhere and affecting the overall cleanliness and operating efficiency of the elevator crossflow fan.

[0053] As cleaning continues, dust and impurities will gradually accumulate in the dust collection box 6. Therefore, users only need to periodically remove the dust collection box 6 and empty or dispose of the dust and impurities to easily keep the elevator cross-flow fan clean and operate efficiently.

[0054] Reference Figures 1-9As shown: The dust collection box 6 includes an upper collection box 61 and a lower collection box 62; the placement platform 31 and the mounting base 35 are provided with a plug-in block 63 at the end away from the cleaning mechanism 5. The upper collection box 61 and the lower collection box 62 are provided with plug-in slots 64. The upper collection box 61 is installed on the side of the placement platform 31 through the plug-in block 63 on the side of the placement platform 31, and the lower collection box 62 is installed on the side of the mounting base 35 through the plug-in block 63 on the side of the mounting base 35. At this time, the plug-in block 63 and the plug-in slot 64 are in the plugged-in state.

[0055] During installation, the upper collection box 61 will connect with the connecting block 63 next to the placement platform 31 via its connecting slot 64, thereby achieving a stable installation on the side of the placement platform 31. Similarly, the lower collection box 62 will also connect with the connecting block 63 next to the mounting base 35 via its connecting slot 64, thereby achieving a stable installation on the side of the mounting base 35.

[0056] When the dust in the dust collection box 6 accumulates to a certain level, the user can easily remove the upper collection box 61 and the lower collection box 62 from the placement platform 31 and the mounting base 35 by simply disconnecting the plug-in relationship, so as to empty the dust or perform further processing.

[0057] First, the blower mechanism 1 and the exhaust mechanism 2, as the core of the fan, promote air circulation through their air outlet and air inlet. To ensure air quality, a filter mechanism 3 is provided at both the air outlet and the air inlet. The filter mechanism 3 includes a placement platform 31 and a mounting base 35.

[0058] At the air inlet of the blower mechanism 1, a platform 31 supports the first filter 32. The first filter 32 is securely installed by cooperating with the movable base 34 via a first limiting block 33 and a second limiting block 341. When the blower mechanism 1 is working, external air first passes through the first filter 32, removing most impurities. Subsequently, the air enters the interior of the blower mechanism 1, is processed, and then passes through the mounting base 35 and the second filter 36 at its air outlet for further purification before being discharged.

[0059] The working process of the exhaust mechanism 2 is similar, but in the opposite direction. It first draws in outside air through the mounting base 35 and the second filter 36. After preliminary filtration, the air enters the interior of the exhaust mechanism 2, and then undergoes secondary filtration through the placement platform 31 at its air outlet and the first filter 32 before finally being discharged.

[0060] To facilitate the replacement and maintenance of the first filter screen 32, a guide groove 311, a guide rod 342, and a return spring are designed between the placement platform 31 and the movable seat 34. When the user needs to replace the first filter screen 32, simply move the movable seat 34 to disengage the first limiting block 33 and the second limiting block 341 from the limiting slot, and the first filter screen 32 can be easily removed. After replacement, the return spring will automatically spring the movable seat 34 back to its original position, re-fixing the first filter screen 32.

[0061] In addition, to prevent external objects or dust from entering the fan, a protective mechanism 4 is provided on the placement platform 31 and the mounting base 35, including a first grid plate 41 and a second grid plate 42.

[0062] To maintain the cleanliness of the filters, the elevator cross-flow fan is also equipped with a cleaning mechanism 5. This mechanism consists of an upper cleaning plate 51, a lower cleaning plate 52, and a connecting block 53. The upper cleaning plate 51 is tightly fitted to the surface of the first filter 32, and the lower cleaning plate 52 is tightly fitted to the surface of the second filter 36. When the servo motor starts, it drives the threaded rod 56 to rotate via a synchronous belt, which in turn drives the moving block 54 at the bottom of the upper cleaning plate 51 to move along the threaded rod 56, thus cleaning the first filter 32. At the same time, the lower cleaning plate 52 moves synchronously to clean the second filter 36. Dust and impurities generated during the cleaning process are collected in the dust collection box 6 on the side of the placement platform 31 and the mounting base 35.

[0063] The dust collection box 6 consists of an upper collection box 61 and a lower collection box 62. The upper collection box 61 and the lower collection box 62 are connected to the insertion blocks 63 on the placement platform 31 and the mounting base 35 via insertion slots 64 to achieve a stable installation. When the dust in the dust collection box 6 accumulates to a certain level, the user can easily disconnect the insertion relationship and remove the upper collection box 61 and the lower collection box 62 for cleaning.

[0064] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. An elevator crossflow fan comprising a blowing mechanism (1) and a sucking mechanism (2), characterized in that, The air blowing mechanism (1) and the air suction mechanism (2) are provided with air outlets and air inlets near the outer shell of the cross flow fan, and the air outlets and air inlets are provided with filter mechanisms (3), the filter mechanism (3) comprises a placing platform (31) and a mounting base (35); The placing platform (31) is arranged at the top end of the outer shell of the cross flow fan, and the mounting base (35) is arranged on the side wall of the outer shell of the cross flow fan; One end of the placing platform (31) is slidably connected with a moving seat (34), a first limiting plug (33) is arranged on the inner side wall opposite to the moving seat (34), a second limiting plug (341) is arranged on the moving seat (34), a first filter screen (32) is arranged in the placing platform (31), and limiting insertion grooves are arranged at both ends of the first filter screen (32) and matched with the first limiting plug (33) and the second limiting plug (341); When the first filter screen (32) is placed in the placing platform (31), the first limiting plug (33) and the second limiting plug (341) are inserted into the limiting insertion grooves at both ends of the first filter screen (32); The mounting base (35) is provided with a second filter screen (36), and the mounting base (35) is provided with a mounting slot (351), and the side of the second filter screen (36) is provided with a mounting plug (361); When the second filter screen (36) is inserted into the mounting base (35), the mounting plug (361) and the mounting slot (351) are in a plug-in state.

2. An elevator crossflow fan according to claim 1, characterized in that The end of the placing platform (31) and the moving seat (34) abutting each other is provided with a guide groove (311), the end of the moving seat (34) and the placing platform (31) abutting each other is provided with a guide rod (342), the guide rod (342) is inserted into the guide groove (311), and a return spring is sleeved on the guide rod (342).

3. An elevator crossflow fan according to claim 1, wherein The placing platform (31) and the mounting base (35) are provided with a protection mechanism (4), and the protection mechanism (4) comprises a first grid plate (41) and a second grid plate (42); The first grid plate (41) is hinged to the placing platform (31), and the second grid plate (42) is hinged to the mounting base (35).

4. An elevator crossflow fan according to claim 3, wherein The end of the first grid plate (41) and the placing platform (31) away from the hinged part is provided with a fixing sleeve (411), and a fixing bolt (412) is inserted into the fixing sleeve (411); when the first grid plate (41) covers the placing platform (31), the fixing bolt (412) is inserted into the fixing sleeve (411) on the first grid plate (41) and the placing platform (31) at the same time; The second grid plate (42) and the mounting base (35) are connected in a clamping manner.

5. An elevator crossflow fan as defined in claim 1 wherein, The surfaces of the first filter screen (32) and the second filter screen (36) are provided with a cleaning mechanism (5); The cleaning mechanism (5) comprises an upper cleaning plate (51), a lower cleaning plate (52) and a connecting block (53); The upper cleaning plate (51) abuts against the surface of the first filter screen (32), and the lower cleaning plate (52) abuts against the surface of the second filter screen (36). The upper cleaning plate (51) and the lower cleaning plate (52) are fixedly connected through the connecting block (53).

6. An elevator crossflow fan as defined in claim 5, wherein Two mounting tables (55) are arranged on both sides of the top end of the cross-flow fan. A through hole is formed in the mounting table (55), a threaded rod (56) is arranged in the through hole, a rotating sleeve (57) is arranged at one end of the threaded rod (56), and an anti-disengagement block is arranged at the other end of the threaded rod (56). A servo motor is arranged at the top end of the cross-flow fan to drive the cleaning mechanism, an output shaft of the servo motor is connected with a rotating shaft, and the rotating shaft drives the rotating sleeve (57) to rotate through a synchronous belt. A moving block (54) is arranged at the bottom of the upper cleaning plate (51), a threaded hole is formed in the moving block (54), and the moving block (54) is threadedly connected with the threaded rod (56) through the threaded hole.

7. An elevator crossflow fan as defined in claim 5 wherein, The dust collecting box (6) is arranged at one end of the placing platform (31) and the mounting base (35) away from the cleaning mechanism (5).

8. An elevator crossflow fan according to claim 7, characterized in that The dust collecting box (6) comprises an upper collecting box (61) and a lower collecting box (62). The placing platform (31) and the mounting base (35) are provided with a plug-in block (63) at one end away from the cleaning mechanism (5), plug-in grooves (64) are formed in the upper collecting box (61) and the lower collecting box (62), the upper collecting box (61) is mounted on the side of the placing platform (31) through the plug-in block (63) beside the placing platform (31), the lower collecting box (62) is mounted on the side of the mounting base (35) through the plug-in block (63) beside the mounting base (35), and at this time, the plug-in block (63) and the plug-in groove (64) are in a plug-in state.

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