Pre-filtering device of fresh exhaust air processor

Abstract

The utility model relates to the technical field of exhaust devices, in particular to a pre-filtering device of a fresh exhaust air processor. The utility model provides a pre-filtering device of a fresh exhaust air processor, which comprises an exhaust fan body and filter screens, and the filter screens are fixed at two ends of the exhaust fan body through screws. A bearing is mounted in the center of the filter screen; the cleaning mechanism comprises a first cleaning plate and a second cleaning plate which are respectively connected to the inner side and the outer side of the filter screen; the cleaning mechanism capable of freely rotating is arranged on an existing filter screen, and when the filter screen is cleaned, only a hand rocker in the cleaning mechanism needs to be rotated, so that a first cleaning plate and a second cleaning plate which are located on the inner side and the outer side of the filter screen respectively do circular motion on the surface of the filter screen; therefore, dust and impurities adhering to the filter screen are scraped through the bristles on the two cleaning plates, the step that the filter screen needs to be detached in traditional cleaning is omitted, and rapid cleaning can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to an exhaust device technical field, concretely relates to a new exhaust air treatment machine's prefiltering device. BACKGROUND

[0002] Exhaust fan, is by motor drive vane rotation drive airflow, make indoor and outdoor air exchange a kind of air conditioning electric appliance, also called ventilation fan. Exhaust purpose is to remove indoor dirty air, adjust temperature, humidity, widely used in family and public place.

[0003] Workshop is equipped with exhaust fan, the both ends of the existing exhaust fan are provided with filter screen, the filter screen has the function of protection and filtering impurities, in actual use, because workshop production environment is complex, exhaust fan will adhere more impurity dust on filter screen after long-term use, affect exhaust effect, the existing processing mode is to disassemble and clean filter screen, but in the process of disassembly and cleaning, exhaust fan lacks the protection of filter screen and cannot continue to use, thereby affecting ventilation, and filter screen disassembly and installation are relatively time-consuming, inconvenient normal use. UTILITARIAN CONTENT

[0004] In order to solve the above technical problems, the utility model embodiment provides a new exhaust air treatment machine's prefiltering device, including exhaust fan body and filter screen, the filter screen is fixed on the both ends of the exhaust fan body by screw;Bearing is installed at the center of the filter screen;It further includes cleaning mechanism, the cleaning mechanism includes one cleaning plate and two cleaning plates connected to the inside and outside of the filter screen respectively, the one cleaning plate and the two cleaning plates can rotate freely, and the cleaning mechanism is used for cleaning the filter screen.

[0005] Further, the cleaning mechanism further includes a main shaft piece sleeved on the bearing, one end of the one cleaning plate and the two cleaning plates is respectively connected with a first sleeve piece and a second sleeve piece, and the first sleeve piece and the second sleeve piece are sleeved on the main shaft piece.

[0006] Further, the opposite sides of the one cleaning plate and the two cleaning plates are provided with a plurality of uniformly distributed bristles, and the bristles are in close contact with the filter screen.

[0007] Further, one end of the main shaft piece is fixed with a limiting head, the limiting head is located in the interior of the exhaust fan body, the other end of the main shaft piece is threadedly connected with a threaded sleeve, the threaded sleeve is located outside the exhaust fan body, and the one cleaning plate is fixed through the threaded sleeve.

[0008] Further, the annular inner wall of the first sleeve piece is fixed with a first positioning piece, and a second positioning groove matched with the first positioning piece is formed on the main shaft piece.

[0009] Further, the second sleeve connector is provided with a first positioning slot, and a second positioning member matched with the first positioning slot is fixed on the main shaft.

[0010] Further, an internal hexagonal groove is formed on the end face of the main shaft close to the screw sleeve, and a hand lever is further included, one end of the hand lever is fixed with an external hexagonal rod matched with the internal hexagonal groove, and the external hexagonal rod is inserted into the internal hexagonal groove.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] By setting the cleaning mechanism rotating freely on the existing filter screen, when cleaning the filter screen, only need to rotate the hand lever in the cleaning mechanism, and the first cleaning plate and the second cleaning plate respectively located on the two sides of the filter screen make circular motion on the surface of the filter screen, so that the dust and impurities adhered on the filter screen are scraped off through the brush hairs on the two cleaning plates, the step of disassembling the filter screen in traditional cleaning is avoided, the filter screen can be cleaned quickly, the air exhaust machine body can be quickly put into work, and the practicability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0014] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0015] Figure 2 It is the structure schematic diagram of the filter screen and the cleaning mechanism;

[0016] Figure 3 It is Figure 2 The exploded three-dimensional structure schematic diagram;

[0017] Figure 4 It is Figure 3 The structure schematic diagram of the filter screen hidden in

[0018] Figure: 1, air exhaust machine body;2, filter screen;3, first cleaning plate;4, main shaft;5, screw sleeve;6, hand lever;7, second cleaning plate;8, external hexagonal rod;9, bearing;10, first sleeve connector;11, first positioning member;12, second sleeve connector;13, first positioning slot;14, internal hexagonal groove;15, second positioning member;16, limiting head;17, second positioning slot. DETAILED DESCRIPTION

[0019] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application. The embodiments described below and the features in the embodiments can be combined with each other without conflict.

[0020] As Figures 1-4 The embodiment provides a pre-filtering device of a new exhaust air treatment machine, which comprises an exhaust fan body 1 and a filter screen 2, the filter screen 2 is fixed at both ends of the exhaust fan body 1 through screws; a bearing 9 is installed at the center of the filter screen 2; the pre-filtering device further comprises a cleaning mechanism, the cleaning mechanism comprises a first cleaning plate 3 and a second cleaning plate 7 which are connected to the inner and outer sides of the filter screen 2 respectively, the first cleaning plate 3 and the second cleaning plate 7 can rotate freely, the cleaning mechanism is used for cleaning the filter screen 2, the cleaning mechanism further comprises a main shaft 4 which is sleeved on the bearing 9, one end of the first cleaning plate 3 and the second cleaning plate 7 is respectively connected with a first sleeving piece 10 and a second sleeving piece 12, the first sleeving piece 10 and the second sleeving piece 12 are sleeved on the main shaft 4, the opposite sides of the first cleaning plate 3 and the second cleaning plate 7 are provided with a plurality of uniformly distributed bristles, the bristles are attached to the filter screen 2, when cleaning, the exhaust fan body 1 is stopped running, the first cleaning plate 3 and the second cleaning plate 7 are rotated clockwise or counterclockwise, and then dust and impurities on the filter screen 2 can be scraped off, the filter screen 2 is cleaned without being disassembled, the operation is convenient, and the practicability is high.

[0021] In the embodiment, as Figure 3 and Figure 4As shown, one end of the main shaft 4 is fixed with a limiting head 16, which is located inside the exhaust fan body 1, and the other end of the main shaft 4 is threadedly connected with a threaded sleeve 5, which is located outside the exhaust fan body 1, the first cleaning plate 3 is fixed through the threaded sleeve 5, the annular inner wall of the first sleeve 10 is fixed with a first positioning member 11, a second positioning groove 17 is formed on the main shaft 4 and matched with the first positioning member 11, a first positioning groove 13 is formed on the second sleeve 12, and the main shaft 4 is fixed with a second positioning member 15 matched with the first positioning groove 13, after long-term use, when the bristles of the first cleaning plate 3 or the second cleaning plate 7 are seriously damaged and cannot realize normal cleaning work, the corresponding cleaning filter screen 2 is disassembled by using a screwdriver, then the threaded sleeve 5 is unscrewed counterclockwise, at this time, the first cleaning plate 3 can be horizontally moved and disassembled for replacement, in addition, when the first cleaning plate 3 is disassembled, the main shaft 4 is pulled from the side where the limiting head 16 is located, so that the main shaft 4 is separated from the second cleaning plate 7, thereby the second cleaning plate 7 is replaced, during installation, the second cleaning plate 7 is installed on the main shaft 4, then the main shaft 4 is sleeved on the bearing 9, the first cleaning plate 3 is installed, and finally the threaded sleeve 5 is used for fixing, which is simple, convenient and fast.

[0022] In the embodiment, as shown in the drawings, Figures 1 to 4 The end face of the main shaft 4 close to the threaded sleeve 5 is provided with an internal hexagonal groove 14, and the hand lever 6 is further included, one end of the hand lever 6 is fixed with an external hexagonal rod 8 matched with the internal hexagonal groove 14, the external hexagonal rod 8 is inserted into the internal hexagonal groove 14, and the hand lever 6 can be installed and disassembled at any time, when not cleaning, the hand lever 6 is disassembled and stored, which can avoid that the exhaust fan body 1 is misoperated by hands during operation, dust falls and is blown by wind to cause dust raising, and the indoor air environment is affected, and the practicability is improved.

[0023] The implementation principle of the pre-filtering device of the new exhaust air treatment machine in the embodiment is as follows: during cleaning, the exhaust fan body 1 is stopped, the hand lever 6 is taken out and installed on the main shaft 4, the hand lever 6 is rotated, the first cleaning plate 3 and the second cleaning plate 7 are rotated clockwise or counterclockwise, and the dust and impurities on the filter screen 2 are scraped off, which is convenient to operate and has high practicability;

[0024] During replacement, the corresponding cleaning filter screen 2 is disassembled by using a screwdriver, then the threaded sleeve 5 is unscrewed counterclockwise, at this time, the first cleaning plate 3 can be horizontally moved and disassembled for replacement, in addition, when the first cleaning plate 3 is disassembled, the main shaft 4 is pulled from the side where the limiting head 16 is located, so that the main shaft 4 is separated from the second cleaning plate 7, thereby the second cleaning plate 7 is replaced, during installation, the second cleaning plate 7 is installed on the main shaft 4, then the main shaft 4 is sleeved on the bearing 9, the first cleaning plate 3 is installed, and finally the threaded sleeve 5 is used for fixing, which is simple, convenient and fast.

[0025] In the description of the utility model, it is necessary to explain that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the utility model product is used, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0026] In the description of the utility model, it is also necessary to explain that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] The above is only the preferred embodiment of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement and the like made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A pre-filter device for a new exhaust air handling unit, comprising an exhaust fan body (1) and a filter screen (2), characterized in that: The filter screen (2) is fixed to both ends of the exhaust fan body (1) by screws; A bearing (9) is installed at the center of the filter screen (2); The invention also includes a cleaning mechanism, wherein the cleaning mechanism includes a first cleaning plate (3) and a second cleaning plate (7) respectively connected to the inner and outer sides of the filter screen (2), and the first cleaning plate (3) and the second cleaning plate (7) are freely rotatable. The cleaning mechanism is used to clean the filter screen (2).

2. A pre-filter device for a fresh exhaust air handling unit according to claim 1, characterized in that: The cleaning mechanism further comprises a main shaft member (4) sleeved on the bearing (9), one end of the No. 1 cleaning plate (3) and the No. 2 cleaning plate (7) are respectively connected to a No. 1 sleeve member (10) and a No. 2 sleeve member (12), and the No. 1 sleeve member (10) and the No. 2 sleeve member (12) are both sleeved on the main shaft member (4).

3. The pre-filter device of the fresh exhaust air handling unit according to claim 1, characterized in that: The opposite sides of the No. 1 cleaning plate (3) and the No. 2 cleaning plate (7) are provided with a plurality of evenly distributed bristles, and the bristles are in contact with the filter screen (2).

4. The pre-filter device of the fresh exhaust air handling unit according to claim 2, characterized in that: A limit head (16) is fixed to one end of the main shaft (4), and the limit head (16) is located inside the exhaust fan body (1). A threaded sleeve (5) is screwed to the other end of the main shaft (4), and the threaded sleeve (5) is located outside the exhaust fan body (1). The No. 1 cleaning plate (3) is fixed by the threaded sleeve (5).

5. The pre-filter device of the fresh exhaust air handling unit according to claim 2, characterized in that: A No. 1 positioning piece (11) is fixed to the annular inner wall of the No. 1 sleeve (10), and a No. 2 positioning groove (17) adapted to the No. 1 positioning piece (11) is provided on the main shaft (4).

6. The pre-filter device of the fresh exhaust air handling unit according to claim 2, characterized in that: A No. 1 positioning groove (13) is provided on the No. 2 sleeve connector (12), and a No. 2 positioning member (15) adapted to the No. 1 positioning groove (13) is fixed on the main shaft member (4).

7. The pre-filter device of the fresh exhaust air handling unit according to claim 4, characterized in that: The main shaft (4) is provided with an inner hexagonal groove (14) on the end surface close to the threaded sleeve (5), and also includes a hand crank (6), one end of which is fixed with an outer hexagonal rod (8) adapted to the inner hexagonal groove (14), and the outer hexagonal rod (8) is inserted into the inner hexagonal groove (14).

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