Gardening greenhouse ventilation device

Abstract

The utility model discloses a gardening greenhouse ventilation device, which relates to the technical field of gardening greenhouse ventilation and comprises a ventilation pipe, a filtering mechanism is fixedly mounted at one end in the ventilation pipe, a fan is arranged in the middle in the ventilation pipe, and an adjusting mechanism is fixedly mounted on the outer side of one end, close to the filtering mechanism, in the ventilation pipe. By the adoption of the structure, the driving motor is started to drive the lead screw to rotate and drive the sliding rod to slide in the outer guide rail, so that the blocking plate moves upwards to adjust the ventilation pipe opening, in the adjusting process, the blocking plate drives the brush plate to move, the brush plate stably makes contact with the filter screen under the action of the telescopic spring, and the ventilation opening is adjusted every time. The filter screen can be synchronously cleaned and brushed, dust accumulation is effectively prevented from affecting the ventilation effect, the design has the opening adjusting function and the automatic cleaning function, the dust cleaning frequency of the filter screen is reduced, the device is more convenient to use, and the overall practicability and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of horticulture greenhouse ventilation, especially relates to a horticulture greenhouse ventilation device. BACKGROUND

[0002] Horticulture greenhouse is a kind of facility agricultural building widely used in horticulture field, it mainly utilizes support to build up frame structure, and common support material has steel pipe, bamboo and so on, these frames constitute the basic skeleton of the greenhouse, guarantee its stability, and the frame outside is covered with material with good light transmission, such as plastic film or glass, plastic film is lower in cost, easy to install, and can satisfy basic illumination demand;Glass material is more durable, light transmission and heat preservation performance are more superior, horticulture greenhouse creates a relatively independent space to adjust internal temperature, humidity, illumination and gas composition and other environmental factors, it can provide suitable growth environment for horticultural crops under adverse external climatic conditions, such as heat preservation in cold winter, blocking cold air, prolonging the growth cycle of crops;Adjust temperature through ventilation facilities and sunshade measures in hot summer to avoid high temperature damage to plants, simultaneously, it can also reduce the invasion of pests and diseases, and to a certain extent, it can isolate harmful organisms from the outside, which helps to improve the yield and quality of horticultural crops, and is an important infrastructure for modern horticultural planting;

[0003] At present, the ventilation device of the existing flower greenhouse is used in severe cold weather, when cold air flows into the greenhouse through the ventilation opening, the staff needs to manually move the cover plate to adjust the size of the air outlet of the ventilation pipe body, so as to realize the purpose of adjusting the ventilation volume, the Chinese patent with publication number "CN216018132U" discloses a kind of adjustable flower greenhouse ventilation device, it includes ventilation pipe body, support rod, air exchange motor and air exchange fan, ventilation pipe body is arranged in the greenhouse outside as air inlet at one end close to air exchange fan, the top and bottom of air inlet are both fixedly installed with cover body sliding groove, the slotted end of two cover body sliding grooves is oppositely arranged, a ventilation pipe cover is arranged in two cover body sliding grooves, two fixed blocks are fixedly installed at the position close to the air outlet end of the bottom of ventilation pipe body, a same cover plate threaded screw rod is connected between two fixed blocks through bearing, cover plate threaded screw rod is threadedly sleeved with cover plate moving block on its circumference, connection block is arranged on the end of ventilation pipe cover away from ventilation pipe body, the utility model has the advantages that the ventilation volume of ventilation pipe body air outlet can be conveniently adjusted;

[0004] The ventilation device of the flower greenhouse can automatically adjust the size of the ventilation opening, but still has some obvious defects in the specific application process, one of which is that the filter screen of the fan cannot be easily disassembled during use, and we all know that the filter screen of the fan will be gradually clogged with dust after a long time of use, especially in the position of the greenhouse directly contacting the land, the dust content in the air is larger, and regular cleaning is particularly necessary, but the problem is that the ventilation pipe is usually located at a high position inside the greenhouse, so when regular disassembly and maintenance are needed, the workers have to climb to a high place to disassemble and clean the dust, which is undoubtedly more cumbersome and inconvenient, not only needs to consume a lot of time and energy, but also has a high requirement on the physical strength of the workers, and the cleaning and maintenance operation at a high position itself has a certain operation risk, and slight carelessness may cause accidents, threatening the life safety of the workers, and in view of the above, in order to improve the practicability, safety and convenience of the device, it is imperative to improve it. Practical new type content

[0005] In view of the problems mentioned in the background art, the purpose of the present application is to provide a horticultural greenhouse ventilation device to solve the problems raised in the background art.

[0006] The above technical purpose of the present application is realized by the following technical scheme:

[0007] A horticultural greenhouse ventilation device, comprising a ventilation pipe, a filter mechanism is fixedly installed at one end of the inside of the ventilation pipe, a fan is arranged in the middle of the ventilation pipe, an adjusting mechanism is fixedly installed on the outside of one end of the ventilation pipe close to the filter mechanism, the adjusting mechanism is arranged on the outside of the filter mechanism, a dust collection mechanism is fixedly installed on one side of the bottom of the ventilation pipe close to the adjusting mechanism, and the top of the dust collection mechanism is connected with the adjusting mechanism and the dust collection mechanism in the ventilation pipe;

[0008] The adjusting mechanism comprises an outer guide rail and a driving assembly, the outer guide rail is fixedly installed at both ends of the outer side of the ventilation pipe, an inner slide of the outer guide rail is connected with a slide rod, the inner side of the slide rod is fixedly installed with a blocking plate, a cleaning assembly is fixedly installed on one side of the blocking plate close to the filter mechanism, the cleaning assembly is connected with the surface of the filter mechanism, the driving assembly is fixedly installed on one side of one end of the ventilation pipe close to the outer guide rail, the slide rod and the driving assembly are screw connected, the outer end of the outer guide rail penetrates through the ventilation pipe, and the outer end of the blocking plate also penetrates through the ventilation pipe.

[0009] As a preferred technical scheme, the driving assembly comprises a fixing frame, a lead screw and a first gear, the fixing frame is fixedly installed on one side of the ventilation pipe close to one end of the outer guide rail, a driving motor is fixedly connected to the bottom of the fixing frame, a second gear is fixedly installed on the output end of the driving motor, the lead screw is rotatably connected to the inner part of the outer guide rail close to the fixing frame, the bottom of the lead screw penetrates the ventilation pipe, the first gear is fixedly installed on the bottom of the lead screw, and the first gear and the second gear are in meshing connection.

[0010] As a preferred technical scheme, the cleaning assembly comprises telescopic springs, the telescopic springs are fixedly installed on the lower end of one side of the blocking plate close to the filtering mechanism in linear arrangement at equal intervals, brush plates are fixedly installed on the end portions of the telescopic springs, and the outer sides of the brush plates are in abutting connection with the filtering mechanism.

[0011] As a preferred technical scheme, the brush plates are fixedly connected with supporting rods at equal intervals on one side close to the blocking plate, the end portions of the supporting rods penetrate the blocking plate, and the telescopic springs are all sleeved on the outer surfaces of the supporting rods.

[0012] As a preferred technical scheme, the filtering mechanism comprises inner guide rails, the inner guide rails are fixedly installed on both sides of one end of the ventilation pipe close to the outer guide rail, a sliding plate is slidably connected to the inner part of the inner guide rail, a filter screen is fixedly installed on the inner side of the sliding plate, the inner side of the brush plate is in abutting connection with the outer surface of the filter screen, a top plate is fixedly installed on the top of the sliding plate, fixed plates are fixedly installed on both sides of the bottom of the top plate, hand-tightening type screw rods are threadedly connected to the lower ends of the fixed plates, and the fixed plates are connected with the ventilation pipe through the hand-tightening type screw rods.

[0013] As a preferred technical scheme, the dust collecting mechanism comprises a material guiding frame, the material guiding frame is fixedly installed on the bottom of the ventilation pipe, a collecting box is fixedly installed on the bottom of the material guiding frame, a collecting drawer is slidably connected to the inner side of the collecting box, a sealing cover is fixedly installed on the outer side of the collecting drawer, hand-tightening type screw rods are arranged on both sides of the sealing cover, and the sealing cover is connected with the collecting box through the hand-tightening type screw rods.

[0014] As a preferred technical scheme, one side of the ventilation pipe is fixedly installed with a mounting frame, the outer side of the mounting frame is fixedly installed with a mounting plate, mounting holes are formed in the outer side of the mounting plate at equal intervals, the mounting holes penetrate the mounting plate, and the mounting holes are all arranged as counter-sunk holes.

[0015] In summary, the utility model mainly has the following beneficial effects:

[0016] First, the device is provided with an adjusting mechanism, the driving motor starts to drive the screw rod to rotate, drives the sliding rod to slide in the outer guide rail, so that the blocking plate moves up to adjust the ventilation pipe opening, during the adjusting process, the blocking plate drives the brush plate to move, the brush plate stably contacts the filter screen under the action of the extension spring, each time the ventilation opening is adjusted, the filter screen can be cleaned by the brush at the same time, dust accumulation affecting the ventilation effect is effectively prevented, this design has the functions of adjusting the opening and automatic cleaning, reduces the frequency of filter screen dust cleaning, makes the device more convenient during use, improves the overall practicality and efficiency;

[0017] Second, the device is also provided with a dust collecting mechanism, when the blocking plate drives the cleaning assembly to move, the filter screen can be brushed and cleaned, dust falls into the collecting drawer of the collecting box through the material guide frame, if the collecting drawer is full, the sealing cover can be removed by loosening the hand screw rod, the drawer can be pulled out for cleaning, if the filter screen is to be disassembled for detailed cleaning, the hand screw rod on the fixed plate is loosened, and the slide plate and the filter screen can be pulled out, the device has the functions of automatic cleaning and reduces the maintenance frequency, and the filter screen and the collecting drawer are convenient to disassemble, which provides convenience for subsequent maintenance and cleaning, and greatly improves the overall use convenience of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the overall structure schematic diagram of the utility model;

[0019] Figure 2 is the front view structure schematic diagram of the split state of the utility model;

[0020] Figure 3 is the rear view structure schematic diagram of the split state of the utility model;

[0021] Figure 4 is the structure schematic diagram of the blocking plate and the cleaning mechanism of the utility model;

[0022] Figure 5 is the A place of the utility model Figure 2 enlarged structure schematic diagram.

[0023] Fig. 1, ventilation pipe; 2, filter mechanism; 21, inner guide rail; 22, slide plate; 23, filter screen; 24, top plate; 25, fixed plate; 26, hand screw rod; 3, adjusting mechanism; 31, outer guide rail; 32, driving assembly; 321, fixed frame; 322, screw rod; 323, first gear; 324, driving motor; 325, second gear; 33, sliding rod; 34, blocking plate; 35, cleaning assembly; 351, extension spring; 352, brush plate; 353, support rod; 4, dust collecting mechanism; 41, material guide frame; 42, collecting box; 43, collecting drawer; 44, sealing cover; 5, mounting bracket; 6, mounting plate; 7, mounting hole. DETAILED DESCRIPTION

[0024] Embodiment

[0025] Reference Figures 1 to 5 The horticultural greenhouse ventilation device comprises a ventilation pipe 1, a filter mechanism 2 is fixedly installed at one end inside the ventilation pipe 1, a fan is arranged in the middle of the ventilation pipe 1, an adjusting mechanism 3 is fixedly installed at the outer side of one end of the ventilation pipe 1 close to the filter mechanism 2, the adjusting mechanism 3 is arranged outside the filter mechanism 2, a dust collection mechanism 4 is fixedly installed at the side of the bottom of the ventilation pipe 1 close to the adjusting mechanism 3, and the top of the dust collection mechanism 4 is connected with the adjusting mechanism 3 and the dust collection mechanism 4 in the ventilation pipe 1.

[0026] The adjusting mechanism 3 comprises an outer guide rail 31 and a driving assembly 32. The outer guide rail 31 is fixedly installed at both ends of the outer side of the ventilation pipe 1. An inner sliding rod 33 is slidingly connected to the inner side of the outer guide rail 31. A blocking plate 34 is fixedly installed at the inner side of the sliding rod 33. A cleaning assembly 35 is fixedly installed at the side of the blocking plate 34 close to the filter mechanism 2. The cleaning assembly 35 is connected with the surface of the filter mechanism 2. The driving assembly 32 is fixedly installed at one side of the end of the ventilation pipe 1 close to the outer guide rail 31. The sliding rod 33 is threadedly connected with the driving assembly 32. The outer end of the outer guide rail 31 penetrates through the ventilation pipe 1. The outer end of the blocking plate 34 also penetrates through the ventilation pipe 1. The outer guide rail 31 is fixed at both ends of the outer side of the ventilation pipe 1, thereby providing a stable sliding track for the sliding rod 33 and ensuring smooth movement of the sliding rod 33. The blocking plate 34 at the inner side of the sliding rod 33 can be flexibly adjusted to the opening of the ventilation pipe 1 by movement of the sliding rod 33, thereby meeting different ventilation requirements. The cleaning assembly 35 at one side of the blocking plate 34 is connected with the surface of the filter mechanism 2, thereby cleaning the filter mechanism 2 during the adjusting process. The driving assembly 32 can accurately control the movement of the sliding rod 33, thereby realizing automatic adjustment. The design of the entire adjusting mechanism 3 can flexibly adjust the ventilation volume and automatically clean the filter mechanism 2 during use, thereby reducing the frequency of cleaning of the filter screen 23 and improving the overall use convenience and practicality of the device.

[0027] Reference Figures 2-3The driving assembly 32 comprises a fixing frame 321, a lead screw 322 and a first gear 323, the fixing frame 321 is fixedly installed on one side of the ventilation pipe 1 near one end of the outer guide rail 31, the bottom of the fixing frame 321 is fixedly connected with a driving motor 324, the output end of the driving motor 324 is fixedly installed with a second gear 325, the lead screw 322 is rotatably connected to the inner part of the outer guide rail 31 near the side of the outer guide rail 31 close to the fixing frame 321, the bottom of the lead screw 322 penetrates through the ventilation pipe 1, the first gear 323 is fixedly installed on the bottom of the lead screw 322, the first gear 323 and the second gear 325 are meshingly connected, the fixing frame 321 provides a stable installation basis for the driving motor 324 and the lead screw 322, the driving motor 324 serves as a power source, the second gear 325 at the output end of the driving motor 324 is meshingly connected with the first gear 323 at the bottom of the lead screw 322, efficient power transmission is realized, the transmission mode is stable and reliable, and the rotation of the lead screw 322 can be accurately controlled, when the driving motor 324 operates, the second gear 325 is driven to rotate, and then the first gear 323 and the lead screw 322 are driven to rotate, the rotation of the lead screw 322 drives the sliding rod 33 to slide in the outer guide rail 31, so that the blocking plate 34 is driven to move, the adjustment of the opening of the ventilation pipe 1 is realized, and the cleaning operation of the cleaning assembly 35 on the filtering mechanism 2 is realized, the whole driving assembly 32 is compact in structure and stable in operation, and provides a powerful guarantee for the automatic adjustment and cleaning function of the ventilation device.

[0028] With reference to Figure 4 The cleaning assembly 35 comprises linearly arranged extension springs 351 fixedly installed on the lower end of one side of the blocking plate 34 close to the filtering mechanism 2, the end of the extension spring 351 is fixedly installed with a brush plate 352, the outer side of the brush plate 352 is abuttingly connected with the filtering mechanism 2, the side of the brush plate 352 close to the blocking plate 34 is fixedly connected with a support rod 353 at equal intervals, the end of the support rod 353 penetrates through the blocking plate 34, and the extension spring 351 is sleeved on the outer surface of the support rod 353, the linearly arranged extension springs 351 at equal intervals on the lower end of one side of the blocking plate 34 provide stable elastic support for the brush plate 352, when the blocking plate 34 moves, the extension spring 351 can make the brush plate 352 always abut tightly with the filtering mechanism 2, so that the cleaning operation can be effectively performed in various situations, the brush plate 352 can stably brush and clean the filtering mechanism 2 under the joint action of the extension spring 351 and the support rod 353, the support rod 353 not only provides a guiding action for the brush plate 352, so that the brush plate 352 moves more stably, but also prevents the extension spring 351 from deviating during compression and expansion, the design of the cleaning assembly 35 can automatically clean the filtering mechanism 2, avoids the influence of the ventilation effect caused by the dust accumulation on the filter screen 23, reduces the dust cleaning frequency of the filter screen 23, and improves the overall use convenience and reliability of the ventilation device.

[0029] With reference to Figures 2-3The filtering mechanism 2 comprises an inner guide rail 21 fixedly installed on both sides of one end of the ventilation pipe 1 close to the outer guide rail 31, a sliding plate 22 slidably connected inside the inner guide rail 21, a filter screen 23 fixedly installed on the inner side of the sliding plate 22, the inner side of the brush plate 352 and the outer surface of the filter screen 23 are in abutting connection, a top plate 24 fixedly installed on the top of the sliding plate 22, a fixed plate 25 fixedly installed on both sides of the bottom of the top plate 24, a hand screw rod 26 threadedly connected to the lower end of the fixed plate 25, and the fixed plate 25 is connected to the ventilation pipe 1 through the hand screw rod 26. The inner guide rail 21 is fixed on both sides of one end of the ventilation pipe 1, which provides a stable sliding track for the sliding plate 22, so that the sliding plate 22 can smoothly move in the inner guide rail 21. The filter screen 23 on the inner side of the sliding plate 22 can effectively block dust and other impurities from entering the ventilation pipe 1, ensuring the quality of ventilation. The inner side of the brush plate 352 is in abutting connection with the outer surface of the filter screen 23. Under the action of the cleaning assembly 35, the filter screen 23 can be automatically cleaned, avoiding the blockage of the filter screen 23 affecting the ventilation effect. The top plate 24 on the top of the sliding plate 22 and the fixed plate 25 on both sides of the bottom thereof play the role of fixing and connecting. The hand screw rod 26 at the lower end of the fixed plate 25 makes the installation and disassembly of the filter screen 23 very convenient. When further cleaning or replacing the filter screen 23 is needed, the hand screw rod 26 can be loosened, and then the sliding plate 22 and the filter screen 23 can be pulled out, which is convenient to operate and improves the overall practicality and maintenance convenience of the ventilation device.

[0030] Reference Figures 1-3 The dust collecting mechanism 4 comprises a guide frame 41 fixedly installed on the bottom of the ventilation pipe 1, a collecting box 42 fixedly installed on the bottom of the guide frame 41, a collecting drawer 43 slidably connected inside the collecting box 42, and a sealing cover 44 fixedly installed on the outer side of the collecting drawer 43. The two sides of the sealing cover 44 are also provided with hand screw rods 26, and the sealing cover 44 is connected to the collecting box 42 through the hand screw rods 26. The guide frame 41 is fixed on the bottom of the ventilation pipe 1 and can accurately guide the dust falling when cleaning the filter screen 23 into the collecting box 42. The collecting drawer 43 inside the collecting box 42 can collect dust in a concentrated manner, which is convenient for subsequent processing. The collecting drawer 43 is slidably connected to the collecting box 42, so that when the collecting drawer 43 is full of dust, the hand screw rods 26 can be loosened to easily pull out the sealing cover 44 and the collecting drawer 43 for cleaning, which is convenient and efficient to operate. The hand screw rods 26 on both sides of the sealing cover 44 not only ensure the sealing property of the collecting drawer 43 during normal use to prevent dust leakage, but also facilitate quick disassembly when cleaning, thereby improving the overall use convenience of the ventilation device and the efficiency of dust collection and processing.

[0031] Reference Figures 1-3The side of the ventilation pipe 1 is fixedly provided with a mounting rack 5, the outer side of the mounting rack 5 is fixedly provided with a mounting plate 6, the outer side of the mounting plate 6 is provided with mounting holes 7 at equal intervals, the mounting holes 7 penetrate through the mounting plate 6, the mounting holes 7 are all provided as counterbores, the mounting rack 5 provides stable support and connection points for the ventilation pipe 1, and ensures the stability of the ventilation pipe 1 during use, the mounting holes 7 provided at equal intervals on the outer side of the mounting plate 6 are designed as counterbores, which on the one hand facilitates the ventilation device to be firmly installed at the specified position of the greenhouse through bolts and other connecting members, so that the installation is more convenient and stable; on the other hand, the counterbores can make the bolt head not protrude from the surface of the mounting plate 6, so as to ensure the overall flatness and aesthetics after installation, and at the same time, the provision of multiple mounting holes 7 provides multiple choices for installation, which can adjust the installation position and angle according to the actual situation, and improves the flexibility and adaptability of the ventilation device installation.

[0032] Principle and advantages: by setting the adjusting mechanism 3, the device can be driven by the driving motor 324 during use, the driving motor 324 can drive the screw rod 322 to rotate, and the rotation of the screw rod 322 can drive the sliding rod 33 to slide smoothly on the inner side of the outer guide rail 31, at this time, the sliding rod 33 can drive the blocking plate 34 to move upwards, the upward movement of the blocking plate 34 can flexibly adjust the opening size of the ventilation pipe 1, realize accurate control of the ventilation volume, and in each adjustment process, the blocking plate 34 can drive the brush plate 352 to move up and down, the brush plate 352 is provided with elastic force by the extension spring 351, which ensures that the brush plate 352 can stably contact the filter screen 23 during movement, and each time the opening is adjusted by the movement of the blocking plate 34, the cleaning assembly 35 can be adaptively adjusted, so that the filter screen 23 can be cleaned and brushed during the adjustment of the ventilation opening each time, which can effectively avoid the situation that a large amount of dust is attached to the surface of the filter screen 23 and affects the ventilation effect, such a design can make the device have the advantages of convenient opening adjustment and automatic cleaning, and the overall use frequency of the filter screen 23 is reduced, which greatly improves the convenience during use;

[0033] By setting dust collecting mechanism 4, so that the device in the application process, each time the sealing plate 34 drive cleaning assembly 35 up and down during the activity, can be brushed on the filter screen 23 dust, at this time the dust can be removed through the guide frame 41 guide effect, automatically fall into the collection drawer 43 in the collection box 42 inside, through the collection drawer 43 to dust collection, long time use if the collection drawer 43 full, only need to loosen the hand screw type screw 26 to remove the sealing cover 44, can be collected drawer 43 out, the whole operation is very convenient, convenient for subsequent dust removal work, and if you need to remove the filter screen 23 for further detailed cleaning, only need to loosen the fixed plate 25 on the hand screw type screw 26, and then pull out the top plate 24 slide plate 22 and filter screen 23 from the inside of the inner guide rail 21, at this time can easily remove the filter screen 23, convenient for the filter screen 23 clean, it is obvious that the whole device not only has the function of automatic cleaning, can reduce the frequency of cleaning and maintenance, and it can be convenient to disassemble the filter screen 23 and collection drawer 43 during use, the whole body is convenient for subsequent maintenance and cleaning, can significantly improve the whole device during use, provides an efficient, reliable solution for the ventilation pipe 1 of the flower greenhouse.

Claims

1. A ventilation device for a horticultural greenhouse comprising a ventilation duct (1), characterized in that: The inside one end of the ventilation pipe (1) is fixedly installed with a filtering mechanism (2), a fan is arranged in the ventilation pipe (1), an adjusting mechanism (3) is fixedly installed on the outside of the ventilation pipe (1) near the filtering mechanism (2), the adjusting mechanism (3) is arranged on the outside of the filtering mechanism (2), a dust collecting mechanism (4) is fixedly installed on the bottom of the ventilation pipe (1) near the adjusting mechanism (3), and the top of the dust collecting mechanism (4) is communicated with the adjusting mechanism (3) and the dust collecting mechanism (4) in the ventilation pipe (1). The adjusting mechanism (3) comprises outer guide rails (31) and a driving assembly (32), the outer guide rails (31) are fixedly installed at both ends of the outer side of the ventilation pipe (1), sliding rods (33) are slidingly connected in the outer guide rails (31), the inner side of the sliding rod (33) is fixedly installed with a blocking plate (34), a cleaning assembly (35) is fixedly installed on the side of the blocking plate (34) near the filtering mechanism (2), the cleaning assembly (35) is connected with the surface of the filtering mechanism (2), the driving assembly (32) is fixedly installed on one side of the ventilation pipe (1) near one end of the outer guide rail (31), the sliding rod (33) and the driving assembly (32) are screw-connected, the outer end of the outer guide rail (31) penetrates the ventilation pipe (1), and the outer end of the blocking plate (34) also penetrates the ventilation pipe (1).

2. The greenhouse ventilation device according to claim 1, characterized in that: The driving assembly (32) comprises a fixed frame (321), a lead screw (322) and a first gear (323), the fixed frame (321) is fixedly installed on one side of the ventilation pipe (1) near one end of the outer guide rail (31), a driving motor (324) is fixedly connected to the bottom of the fixed frame (321), a second gear (325) is fixedly installed on the output end of the driving motor (324), the lead screw (322) is rotatably connected to the inside of the outer guide rail (31) near the fixed frame (321) on one side of the two outer guide rails (31), the bottom of the lead screw (322) penetrates the ventilation pipe (1), and the first gear (323) is fixedly installed on the bottom of the lead screw (322).

3. The greenhouse ventilation device according to claim 1, characterized in that: The cleaning assembly (35) comprises telescopic springs (351), the telescopic springs (351) are fixedly installed on the lower end of the blocking plate (34) near the filtering mechanism (2) in linear arrangement at equal intervals, brush plates (352) are fixedly installed at the ends of the telescopic springs (351), and the outer side of the brush plate (352) is connected with the filtering mechanism (2).

4. The greenhouse ventilation device according to claim 3, characterized in that: The brush plate (352) is fixedly connected with supporting rods (353) at equal intervals on the side near the blocking plate (34), the ends of the supporting rods (353) penetrate the blocking plate (34), and the telescopic springs (351) are all sleeved on the outer surfaces of the supporting rods (353).

5. The greenhouse ventilation device according to claim 4, characterized in that: The filter mechanism (2) includes an inner guide rail (21) fixedly installed on both sides of one end of the ventilation pipe (1) close to the outer guide rail (31), the inner guide rail (21) is slidably connected with a sliding plate (22) inside, the inner side of the sliding plate (22) is fixedly installed with a filter screen (23), the inner side of the brush plate (352) and the outer surface of the filter screen (23) are connected, the top of the sliding plate (22) is fixedly installed with a top plate (24), the bottom of the top plate (24) is fixedly installed with a fixed plate (25) on both sides, the lower end of the fixed plate (25) is threadedly connected with a hand screw rod (26), and the fixed plate (25) is connected with the ventilation pipe (1) through the hand screw rod (26).

6. The greenhouse ventilation device according to claim 5, characterized in that: The dust collecting mechanism (4) includes a guide frame (41) fixedly installed at the bottom of the ventilation pipe (1), the bottom of the guide frame (41) is fixedly installed with a collecting box (42), the inner side of the collecting box (42) is slidably connected with a collecting drawer (43), the outer side of the collecting drawer (43) is fixedly installed with a sealing cover (44), both sides of the sealing cover (44) are also provided with a hand screw rod (26), and the sealing cover (44) is connected with the collecting box (42) through the hand screw rod (26).

7. The greenhouse ventilation device according to claim 1, characterized in that: One side of the ventilation pipe (1) is fixedly installed with a mounting bracket (5), the outer side of the mounting bracket (5) is fixedly installed with a mounting plate (6), the outer side of the mounting plate (6) is equally spaced to be provided with mounting holes (7), the mounting holes (7) penetrate through the mounting plate (6), and the mounting holes (7) are all provided as countersunk holes.

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