A removable screen ventilation device for a harvester cab

Abstract

The utility model relates to cab ventilation equipment technical field discloses a kind of detachable filter screen ventilation devices of harvester cab, including air duct and filter screen, air duct is horizontal rectangular duct, bottom is equipped with at least one with the mounting slot parallel to rectangular duct width, filter screen is rectangular flake, with rectangular duct and mounting slot width is equal, can be inserted into rectangular duct and both sides inner wall sliding connection, rectangular duct top inner wall and filter screen top are equipped with first magnetic stripe and second magnetic stripe respectively, filter screen is close to rectangular duct top, and magnetic stripe adsorption makes filter screen and rectangular duct into an organic whole. The utility model uses extraction formula multilayer filter screen, can be quickly disassembled, cleaned and replaced, facilitate driver operation, effectively promote cab air quality.

Description

Technical Field

[0001] This utility model relates to the technical field of cab ventilation equipment, specifically to a detachable filter ventilation device for a harvester cab. Background Technology

[0002] In mechanized agricultural operations, harvesters are crucial pieces of machinery, and the cab is the workplace for the driver, where they spend extended periods of time. However, when harvesters are working in the fields, the cab's air intake often draws in large amounts of dust, particulate matter, and other impurities. These impurities not only reduce the air quality inside the cab but can also harm the driver's respiratory health, affecting work efficiency and operational quality. Furthermore, traditional cab ventilation systems typically use fixed filters; once these filters become clogged, cleaning and replacement are cumbersome, time-consuming, and labor-intensive, shortening working hours and causing considerable inconvenience to the driver.

[0003] Currently, although some harvester cab ventilation devices with filtration functions exist on the market, most have the following shortcomings: firstly, the filtration effect of the filters is limited and cannot effectively filter out fine particulate matter; secondly, the process of disassembling and cleaning the filters is complicated and inconvenient for daily maintenance by the driver. This makes it difficult to effectively guarantee the air quality in the harvester cab, thereby affecting the harvester driver's operating efficiency and working hours. Utility Model Content

[0004] The purpose of this utility model is to provide a detachable filter ventilation device for the cab of a harvester, so as to solve the problems of difficult filter removal, cleaning and replacement of the ventilation device in the cab of a harvester.

[0005] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution: a detachable filter ventilation device for a harvester cab, comprising: The air duct has a horizontally arranged rectangular pipe and an air inlet and an air outlet at both ends of the pipe. A fan for driving airflow is provided at the air outlet. At least one mounting groove is provided at the bottom of the rectangular pipe, and each mounting groove is parallel to the width direction of the rectangular pipe. The filter screen has a rectangular sheet structure, the width of which is equal to that of the rectangular pipe and the mounting groove, and it can be inserted into the rectangular pipe through the mounting groove and slidably connected to the inner walls of both sides of the rectangular pipe; The top inner wall of the rectangular pipe and the top of the filter screen are respectively provided with a first magnetic strip and a second magnetic strip for adsorption connection. When the filter screen moves closer to the top of the rectangular pipe along the mounting groove, the first magnetic strip and the second magnetic strip are attracted together under the action of magnetic force, connecting the filter screen and the rectangular pipe into a whole.

[0006] Furthermore, multiple filters are sequentially inserted into the corresponding mounting slots along the airflow direction from the air inlet to the air outlet, and the mesh count of two adjacent filters increases progressively, so that impurities are intercepted step by step.

[0007] Furthermore, the filter screen is installed at an angle inside the rectangular pipe.

[0008] Furthermore, slide rails are provided on both inner walls of the rectangular pipe, and the filter screen is slidably connected to the slide rails so that the filter screen can be inserted into or removed from the mounting groove.

[0009] Furthermore, a baffle is provided at the lower edge of the filter screen, which closes the corresponding mounting groove when the filter screen is inserted into place, and the mating surfaces of the baffle and the mounting groove are respectively provided with a third magnetic strip and a fourth magnetic strip that attract each other.

[0010] Furthermore, the top surface of the baffle is also provided with an annular sealing strip. When the filter screen and the rectangular pipe are adsorbed together, the sealing strip is tightly fitted to the bottom surface of the rectangular pipe to seal the gap between the mounting groove and the filter screen.

[0011] Furthermore, the lower end face of the baffle is provided with a vertically downward handle.

[0012] Furthermore, a rain cover is also provided above the air inlet.

[0013] The embodiments of this utility model have the following beneficial effects: In this embodiment of the invention, a multi-layer removable filter screen is fixed by adsorption using paired magnetic strips, enabling quick disassembly and installation of the filter screen. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] Figure 1 This is a cross-sectional view of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the filter structure according to an embodiment of the present invention; Figure 3 This is an embodiment of the present utility model. Figure 1 Schematic diagram of the structure at point A in the middle; Figure 4This is an embodiment of the present utility model. Figure 1 Schematic diagram of the structure at point B; The labels in the diagram represent the following: Air duct; 101 - Rectangular duct; 102 - Air inlet; 103 - Air outlet; 2-Fan; 3-Mounting slot; 4-Filter screen; 5-First magnetic strip; 6-Second magnetic strip; 7-Slide rail; 8-Baffle; 9-Third magnetic strip; 10-Fourth magnetic strip; 11-Sealing strip; 12-Handle; 13-Rain cover. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] As an important type of agricultural machinery, harvesters typically raise a lot of dust and various particulate matter from crops when working in the fields. Therefore, the filters of the ventilation system need to be cleaned frequently during harvester operation. However, the filters of the existing cab ventilation system are often difficult to disassemble, which greatly affects the driver's work quality.

[0018] Reference Figure 1 and Figure 2 A removable filter ventilation device for a harvester cab, comprising: The air duct 1 has a horizontally arranged rectangular pipe 101 and air inlets 102 and air outlets 103 at both ends of the pipe. A fan 2 for driving airflow is provided at the air outlet 103. At least one mounting groove 3 is provided at the bottom of the rectangular pipe 101, and each mounting groove 3 is parallel to the width direction of the rectangular pipe 101. The filter screen 4 has a rectangular sheet structure. The width of the filter screen 4 is equal to that of the rectangular pipe 101 and the mounting groove 3. It can be inserted into the rectangular pipe 101 through the mounting groove 3 and slidably connected to the inner walls of both sides of the rectangular pipe 101. The top inner wall of the rectangular pipe 101 and the top of the filter screen 4 are respectively provided with a first magnetic strip 5 and a second magnetic strip 6 for adsorption connection. When the filter screen 4 moves along the mounting groove 3 toward the top of the rectangular pipe 101, the first magnetic strip 5 and the second magnetic strip 6 are adsorbed together under the action of magnetic force, connecting the filter screen 4 and the rectangular pipe 101 into a whole.

[0019] By adopting the above scheme, multiple filter screens 4 are equal in width to the rectangular pipe 101, which can cover the entire internal cross-section of the rectangular pipe 101. Multiple horizontal mounting grooves 3 are opened at the top of the rectangular pipe 101, so that the filter screens 4 can smoothly enter and exit the rectangular pipe 101 during installation and disassembly without jamming. The top of the filter screen 4 is provided with a second magnetic strip 6, which is attracted to the first magnetic strip 5 on the inner wall of the top of the rectangular pipe 101, thereby firmly fixing the filter screen 4 inside the rectangular pipe 101 and preventing the filter screen 4 from shifting under the action of airflow or falling under the action of gravity.

[0020] Specific operating procedure: During the operation of the harvester, start the fan 2. The fan 2 drives the airflow from the outside into the rectangular pipe 101. The airflow enters the cab after being filtered by the filter screen 4, providing clean air for the driver. When the filter screen 4 needs to be cleaned or replaced, simply pull the filter screen 4 out of the mounting slot 3 for cleaning or replace it with a new filter screen 4, and then reinsert it into the mounting slot 3 and fix it in place.

[0021] Furthermore, multiple filters 4 are sequentially inserted into the corresponding mounting slots 3 from the air inlet 102 to the air outlet 103 along the airflow direction, and the mesh count of two adjacent filters 4 increases progressively, so that impurities are intercepted step by step.

[0022] By adopting the above scheme, along the airflow direction, the mesh openings of two adjacent filters 4 gradually become smaller, which can effectively trap different particles in the intake air in different areas inside the air duct 1, enhance the filtration effect of the ventilation device, and prevent particles of different sizes from quickly clogging the filters in a short time.

[0023] Furthermore, the filter screen 4 is installed at an angle inside the rectangular pipe 101.

[0024] Furthermore, slide rails 7 are provided on the inner walls of both sides of the rectangular pipe 101, and the filter screen 4 is slidably connected to the slide rails 7 so that the filter screen 4 can be inserted into or removed from the mounting groove 3.

[0025] By adopting the above scheme, the filter screen 4 is inclinedly arranged inside the rectangular pipe 101 along the inclined slide rail 7, which increases the effective filtration area of ​​the filter screen 4.

[0026] Furthermore, a baffle 8 is provided on the lower edge of the filter screen 4. When the filter screen 4 is inserted into place, the baffle 8 closes the corresponding mounting groove 3. The mating surfaces of the baffle 8 and the mounting groove 3 are respectively provided with a third magnetic strip 9 and a fourth magnetic strip 10 that attract each other.

[0027] By adopting the above scheme, a third magnetic strip 9 and a fourth magnetic strip 10 that attract each other are respectively provided on the mating surface of the baffle 8 and the mounting groove 3, which apply a fixing force to the bottom of the filter screen 4 again, preventing the harvester from violently shaking on bumpy road sections and throwing the filter screen 4 out of the rectangular pipe 101.

[0028] Furthermore, the top surface of the baffle 8 is also provided with an annular sealing strip 11. When the filter screen 4 and the rectangular pipe 101 are adsorbed together, the sealing strip 11 is tightly attached to the bottom surface of the rectangular pipe 101 to seal the gap between the mounting groove 3 and the filter screen 4.

[0029] By adopting the above solution, when the baffle 8 and the mounting groove 3 are fitted together, the sealing strip 11 around the bottom of the filter screen 4 completely seals the gap between the baffle 8 and the mounting groove 3, ensuring the airtightness of the rectangular pipe 101 and preventing unfiltered dust air from bypassing.

[0030] Furthermore, a vertically downward handle 12 is provided on the lower end face of the baffle 8.

[0031] Furthermore, a rain cover 13 is installed above the air inlet 102.

[0032] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered as falling within the scope of protection of this utility model.

Claims

1. A detachable filter ventilation device for a harvester cab, characterized in that, include: The air duct (1) has a horizontally arranged rectangular pipe (101) and an air inlet (102) and an air outlet (103) at both ends of the pipe. A fan (2) for driving airflow is provided at the air outlet (103). At least one mounting groove (3) is provided at the bottom of the rectangular pipe (101), and each mounting groove (3) is parallel to the width direction of the rectangular pipe (101). The filter screen (4) has a rectangular sheet structure. The width of the filter screen (4) is equal to that of the rectangular pipe (101) and the mounting groove (3). It can be inserted into the rectangular pipe (101) through the mounting groove (3) and slidably connected to the inner walls of both sides of the rectangular pipe (101). The top inner wall of the rectangular pipe (101) and the top of the filter screen (4) are respectively provided with a first magnetic strip (5) and a second magnetic strip (6) for adsorption connection. When the filter screen (4) moves along the mounting groove (3) toward the top of the rectangular pipe (101), the first magnetic strip (5) and the second magnetic strip (6) are adsorbed together under the action of magnetic force, connecting the filter screen (4) and the rectangular pipe (101) into a whole.

2. The detachable filter ventilation device for a harvester cab according to claim 1, characterized in that, Multiple filters (4) are sequentially inserted into the corresponding mounting slots (3) from the air inlet (102) to the air outlet (103) along the airflow direction, and the mesh count of two adjacent filters (4) increases step by step, so that impurities are intercepted step by step.

3. The detachable filter ventilation device for a harvester cab according to claim 1, characterized in that, The filter (4) is installed at an angle inside the rectangular pipe (101).

4. A detachable filter ventilation device for a harvester cab according to claim 3, characterized in that, The inner walls of both sides of the rectangular pipe (101) are provided with slide rails (7), and the filter screen (4) is slidably connected to the slide rails (7) so that the filter screen (4) can be inserted into or removed from the mounting groove (3).

5. A detachable filter ventilation device for a harvester cab according to claim 1, characterized in that, The lower edge of the filter screen (4) is provided with a baffle (8). When the filter screen (4) is inserted into place, the baffle (8) closes the corresponding mounting groove (3). The mating surfaces of the baffle (8) and the mounting groove (3) are respectively provided with a third magnetic strip (9) and a fourth magnetic strip (10) that attract each other.

6. A detachable filter ventilation device for a harvester cab according to claim 5, characterized in that, The top surface of the baffle (8) is also provided with an annular sealing strip (11). When the filter screen (4) and the rectangular pipe (101) are adsorbed together, the sealing strip (11) is tightly attached to the bottom surface of the rectangular pipe (101) to seal the gap between the mounting groove (3) and the filter screen (4).

7. A detachable filter ventilation device for a harvester cab according to claim 6, characterized in that, The lower end face of the baffle (8) is provided with a vertically downward handle (12).

8. A detachable filter ventilation device for a harvester cab according to claim 1, characterized in that, A rain cover (13) is also provided above the air inlet (102).

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