Waste gas filtering and dust collecting device

Abstract

The utility model discloses a waste gas filtering and dust collecting device which comprises a waste gas filtering treatment box, comprising a waste gas filtering box body, a bottom cover which is combined and connected with the bottom of the waste gas filtering box body, a dust collecting hopper which is arranged on the bottom cover, an exhaust fan which is connected with a gas outlet end on the side surface of the waste gas filtering box body, a gas inlet pipeline which is connected with a gas inlet end of the waste gas filtering box body, and supporting legs, a filter bag is arranged in the waste gas filter box body; the supporting legs comprise supporting legs connected with the surface of the waste gas filter box body and stabilizing blocks of which the top ends are connected with the bottom surfaces of the supporting legs; according to the filtering and dust collecting device, the dust removing component is convenient to clean, the electric push rod is lifted to drive the transverse plate and the pre-filtering plate to move upwards, impurities exposed on the surface of the pre-filtering plate are convenient to clean, the electric push rod is adjusted to drive the bottom cover and the dust collecting hopper to move downwards, and dust impurities blocked on a filtering bag in the waste gas filtering box body are convenient to clean.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas filtration and dust collection treatment devices, and particularly relates to a waste gas filtration and dust collection device. Background Technique

[0002] The waste gas generated in the processing operations of a chemical plant workshop contains pollutants such as dust, flue gas soot, odor gas, toxic and harmful gases, etc. It is necessary to treat the waste gas to reduce or eliminate the content of harmful substances in the waste gas so that it meets the national emission standards or environmental protection requirements, thereby protecting the environment and human health. The Chinese utility model authorized patent application number CN202021329613.7 discloses an exhaust gas filtration device for environmental protection. Filtering and treating waste gas is a conventional environmental protection measure. A common method for waste gas treatment is filtration and dust collection, filtering impurities such as dust and flue gas soot contained in the discharged waste gas, and collecting them in the ash hopper to a certain extent and then centrally treating them;

[0003] When filtering the welding fume waste gas in the workshop, common waste gas treatment devices include welding fume purifiers, bag filters, etc. Although the dust removal effect can be achieved, the dust removal parts are inconvenient. For example, the dust removal bag is installed inside the device to filter dust and flue gas soot impurities in the waste gas, making it inconvenient to clean the filtered impurities and easily causing blockages; when treating waste gas, there is a problem in the design of a filter and dust collection device that does not facilitate cleaning the dust removal components. Therefore, this application proposes a waste gas filtration and dust collection device. Content of the Utility Model

[0004] The purpose of the utility model is to provide a waste gas filtration and dust collection device to solve the problem that there is no filter and dust collection device that is convenient for cleaning the dust removal components during waste gas treatment as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A waste gas filtration and dust collection device, including

[0006] A waste gas filtration and treatment box, including a waste gas filtration box body, a bottom cover combined and connected to the bottom of the waste gas filtration box body, a dust collection ash hopper installed on the bottom cover, an exhaust fan connected to the side air outlet end of the waste gas filtration box body, an intake pipe connected to the intake end of the waste gas filtration box body, and support feet. A fixed frame for supporting the exhaust fan is provided on the side of the waste gas filtration box body. A filter bag is provided inside the waste gas filtration box body. The support feet include legs connected to the surface of the waste gas filtration box body and a stabilizing block with the top connected to the bottom surface of the legs;

[0007] An adjustment component, including a fixed arm installed on the top surface of the waste gas filtration box body, an adjustment electric push rod with the top connected to the end of the fixed arm, and a connection block installed on the surface of the bottom cover and connected to the bottom end of the adjustment electric push rod;

[0008] The pre-treatment filtration component includes a lifting electric push rod with its bottom end connected to a supporting leg on one side, a cross plate with its end connected to the top end of the lifting electric push rod, a sealing cover connected to the middle position of the cross plate, and pre-filter plates of vertical sealing covers evenly distributed at equal intervals.

[0009] Preferably, the pre-filter plates arranged side by side on the sealing cover are pre-filter plate a, pre-filter plate b, and pre-filter plate c in sequence. Filter holes are provided on the pre-filter plates, and the pore diameters of the filter holes on pre-filter plate a, pre-filter plate b, and pre-filter plate c decrease arithmetically.

[0010] Preferably, the pre-filter plates are parallel to the filter bags. A dust discharge port is provided on the bottom surface of the waste gas filtration box body. A material groove corresponding to the dust discharge port is provided on the bottom cover. The dust collection hopper is a cone structure with a wider top and a narrower bottom, and the top of the dust collection hopper is open. The dust collection hopper is opposite to the dust discharge port.

[0011] Preferably, the fixed arm includes a vertical part and a horizontal part. The top end of the adjusting electric push rod is connected to the end of the horizontal part. The lifting electric push rod is parallel to the adjusting electric push rod and the vertical part.

[0012] Preferably, a sealing groove for cooperating with the sealing cover is provided on the top surface of the waste gas filtration box body. The surface of the sealing cover is flush with the surface of the waste gas filtration box body. The bottom surface of the cross plate fits with the surface opposite to the sealing cover.

[0013] Preferably, a dust cleaning component is provided inside the dust collection hopper. The dust cleaning component includes a cross arm connected to the bottom cover, a motor box connected to the central position of the cross arm, a driving motor installed inside the motor box, a driving shaft with its top end connected to the driving motor, cleaning plates symmetrically distributed on the left and right at the bottom of the driving shaft, and a protective shell detachably installed on the cleaning plates.

[0014] Preferably, the bottom end of the driving motor is of a "T" shape. The cleaning plates are in an inclined state. The cleaning plates are tangent to the inner side wall surface of the dust collection hopper. The cross section of the cleaning plates is in the shape of an isosceles trapezoid.

[0015] Preferably, the protective shell is in the shape of an open isosceles trapezoid. The inner surface of the protective shell fits with the outer surface of the cleaning plates. Protrusions embedded in the surface of the cleaning plates are provided on the waist sides of the protective shell. Brush hairs are provided on the cleaning plates.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] In the present utility model, the dust filtering and collecting device of the present application facilitates the cleaning of the dust removal component. The lifting electric push rod drives the horizontal plate and the pre-filter plate to move upward, facilitating the cleaning of large particle dust and soot impurities filtered out on the surface of the exposed pre-filter plate. The adjusting electric push rod drives the bottom cover and the dust collecting hopper to move downward, creating a certain distance between the bottom cover and the waste gas filtering box body, which is conducive to cleaning the dust impurities blocked on the filter bag inside the waste gas filtering box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a front view structural schematic diagram of the waste gas filtering box body of the present utility model;

[0020] Figure 3 is a sectional structural schematic diagram of the waste gas filtering box body of the present utility model;

[0021] Figure 4 is a three-dimensional structural schematic diagram of the sealing cover of the present utility model;

[0022] Figure 5 is a sectional structural schematic diagram of the protective shell of the present utility model;

[0023] In the figure: 1, waste gas filtering box body; 2, bottom cover; 4, dust collecting hopper; 7, exhaust fan; 11, intake pipe; 12, fixed frame; 13, filter bag; 31, stabilizing block; 32, leg; 41, cross arm; 42, motor box; 43, driving motor; 44, driving shaft; 45, cleaning plate; 46, protective shell; 51, fixed arm; 52, adjusting electric push rod; 53, connecting block; 61, lifting electric push rod; 62, horizontal plate; 63, sealing cover; 64, pre-filter plate; 461, protrusion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] Please refer to Figures 1 to 4, the present utility model provides a technical solution: an exhaust gas filtering and dust collecting device, including an exhaust gas filtering and processing box, which includes an exhaust gas filtering box body 1, a bottom cover 2 combined and connected to the bottom of the exhaust gas filtering box body 1, a dust collecting hopper 4 installed on the bottom cover 2, an exhaust fan 7 connected to the side air outlet end of the exhaust gas filtering box body 1, an intake pipe 11 connected to the intake end of the exhaust gas filtering box body 1, and support feet. The support feet support the exhaust gas filtering box body 1. The exhaust fan 7 operates and sucks the exhaust gas. The exhaust gas enters the interior of the exhaust gas filtering box body 1 from the intake pipe 11, and after being filtered, it is discharged from the air outlet of the exhaust fan 7. The exhaust gas filtering method is a conventional technical means and will not be elaborated in detail in this application. A fixed frame 12 for supporting the exhaust fan 7 is provided on the side of the exhaust gas filtering box body 1. The fixed frame 12 is combined with the exhaust gas filtering box body 1 and the exhaust fan 7 by conventional methods. A filter bag 13 is provided inside the exhaust gas filtering box body 1, and the filter bag 13 functions to filter impurities in the exhaust gas. The support feet include support legs 32 connected to the surface of the exhaust gas filtering box body 1 and a stabilizing block 31 whose top is connected to the bottom surface of the support legs 32. The stabilizing block 31 is combined with the exhaust gas filtering box body 1 and the support legs 32 by conventional methods;

[0027] The adjusting assembly includes a fixed arm 51 installed on the top surface of the exhaust gas filtering box body 1, an adjusting electric push rod 52 whose top is connected to the end of the fixed arm 51, and a connecting block 53 installed on the surface of the bottom cover 2 and connected to the bottom end of the adjusting electric push rod 52. The fixed arm 51 is combined with the exhaust gas filtering box body 1 and the adjusting electric push rod 52 by conventional methods. The split bottom cover 2 is combined and connected to the exhaust gas filtering box body 1. When the adjusting electric push rod 52 operates, the bottom cover 2 and the dust collecting hopper 4 move vertically downward, so that there is a certain distance between the bottom cover 2 and the exhaust gas filtering box body 1, which is conducive to cleaning the blocked dust and impurities on the filter bag 13 inside the exhaust gas filtering box body 1. The joint surface between the bottom cover 2 and the exhaust gas filtering box body 1 is subjected to conventional sealing treatment; The pretreatment filtering assembly includes a lifting electric push rod 61 whose bottom end is connected to one of the support legs 32, a cross plate 62 whose end is connected to the top of the lifting electric push rod 61, a sealing cover 63 connected to the middle position of the cross plate 62, and pre-filter plates 64 arranged equidistantly perpendicular to the sealing cover 63. The cross plate 62 is combined with the lifting electric push rod 61 and the sealing cover 63 by conventional methods. When the lifting electric push rod 61 operates, the cross plate 62 and the pre-filter plates 64 can move vertically upward, and the pre-filter plates 64 are exposed, which is convenient for cleaning the large particle dust and soot impurities filtered out on the surface of the pre-filter plates 64. The joint surface between the sealing cover 63 and the exhaust gas filtering box body 1 is subjected to conventional sealing treatment.

[0028] In this embodiment, the pre-filter plates 64 arranged side by side on the sealing cover 63 are the a pre-filter plate 64, the b pre-filter plate 64, and the c pre-filter plate 64 in sequence. The pre-filter plates 64 are provided with filter holes. The pore diameters of the filter holes on the a pre-filter plate 64, the b pre-filter plate 64, and the c pre-filter plate 64 decrease in an arithmetic progression. The pore sizes of the side-by-side pre-filter plates 64 decrease according to an arithmetic progression, which can pre-filter the exhaust gas before it is filtered by the filter bag 13 and filter out large particle impurities and agglomerated impurities contained in the exhaust gas.

[0029] In this embodiment, the pre-filter plates 64 are parallel to the filter bag 13. A dust discharge port is provided on the bottom surface of the exhaust gas filtering box body 1. A material trough corresponding to the dust discharge port is provided on the bottom cover 2. The dust collecting hopper 4 is a conical structure with a wider top and a narrower bottom, and the top of the dust collecting hopper 4 is open. The dust collecting hopper 4 is opposite to the dust discharge port. The filter bag 13 filters the dust impurities in the exhaust gas, and the filtered dust impurities fall into the interior of the dust collecting hopper 4 and accumulate.

[0030] In this embodiment, the fixed arm 51 includes a vertical portion and a horizontal portion. The top end of the adjusting electric push rod 52 is connected to the end of the horizontal portion. The lifting electric push rod 61 is parallel to the adjusting electric push rod 52 and the vertical portion. A sealing groove for cooperating with the sealing cover 63 is provided on the top surface of the exhaust gas filtering box body 1. The surface of the sealing cover 63 is flush with the surface of the exhaust gas filtering box body 1. The bottom surface of the cross plate 62 fits with the surface opposite to the sealing cover 63. When the lifting electric push rod 61 operates, the cross plate 62 and the pre-filter plates 64 can move vertically upward, and the pre-filter plates 64 are exposed, which is convenient for cleaning the large particle dust and soot impurities filtered out on the surface of the pre-filter plates 64. A conventional sealing treatment is performed between the joint surface of the sealing cover 63 and the exhaust gas filtering box body 1.

[0031] The working principle and usage process of the present utility model: The exhaust fan 7 operates and sucks the exhaust gas. The exhaust gas enters the interior of the exhaust gas filtering box body 1 from the intake pipe 11 and is discharged from the outlet pipe orifice of the exhaust fan 7 after being filtered;

[0032] When the exhaust gas enters the exhaust gas filtering box body 1, the pore sizes of the side-by-side pre-filter plates 64 decrease according to an arithmetic progression, which can pre-filter the exhaust gas before it is filtered by the filter bag 13 and filter out large particle impurities and agglomerated impurities contained in the exhaust gas;

[0033] The pretreated exhaust gas is filtered again by the filter bag 13, and the filtered dust impurities fall into the interior of the dust collecting hopper 4;

[0034] When the lifting electric push rod 61 operates, the cross plate 62 and the pre-filter plates 64 can move vertically upward, and the pre-filter plates 64 are exposed, which is convenient for cleaning the large particle dust and soot impurities filtered out on the surface of the pre-filter plates 64;

[0035] Adjust the operation of the electric push rod 52 to vertically lower the bottom cover 2 and the dust collection hopper 4, so that there is a certain distance between the bottom cover 2 and the waste gas filtering box body 1, which is beneficial to cleaning the dust and impurities blocked on the filter bag 13 inside the waste gas filtering box body 1;

[0036] In summary: The filtering and dust collection device of the present application is convenient for cleaning the dust removal components. The lifting electric push rod 61 drives the cross plate 62 and the pre-filter plate 64 to move upward, which is convenient for cleaning the large-particle dust and soot impurities filtered out on the surface of the exposed pre-filter plate 64. Adjusting the electric push rod 52 drives the bottom cover 2 and the dust collection hopper 4 to move downward, so that there is a certain distance between the bottom cover 2 and the waste gas filtering box body 1, which is beneficial to cleaning the dust and impurities blocked on the filter bag 13 inside the waste gas filtering box body 1.

[0037] Embodiment 2

[0038] Please refer to Figures 1 to 5 , which is the second embodiment of the present utility model. Based on the previous embodiment, in order to increase the dust cleaning effect, a dust cleaning component is provided inside the dust collection hopper 4. The dust cleaning component includes a cross arm 41 connected to the bottom cover 2, a motor box 42 connected to the central position of the cross arm 41, a driving motor 43 installed inside the motor box 42, a driving shaft 44 with its top end connected to the driving motor 43, cleaning plates 45 symmetrically distributed on the left and right at the bottom of the driving shaft 44, and a protective shell 46 detachably installed on the cleaning plates 45. The two ends of the cross arm 41 are respectively combined with the bottom cover 2 by conventional methods. The driving motor 43 operates to drive the driving shaft 44 and the cleaning plates 45 to rotate. The bristles on the cleaning plates 45 clean the dust and impurities remaining on the inner side wall of the dust collection hopper 4, which is convenient for operation. The protective shell 46 protects the cleaning plates 45. When the cleaning operation is not carried out, the cleaning plates 45 are blocked by the protective shell 46, avoiding the interference of the bristles on the cleaning plates 45 by the dust and impurities.

[0039] In this embodiment, the bottom end of the driving motor 43 is of a "T" shape. The cleaning plates 45 are in an inclined state, and the cleaning plates 45 are tangent to the inner side wall surface of the dust collection hopper 4. The cross section of the cleaning plates 45 is in the shape of an isosceles trapezoid. The protective shell 46 is in the shape of an open isosceles trapezoid. The inner surface of the protective shell 46 fits with the outer surface of the cleaning plates 45. There are protrusions 461 embedded in the surface of the cleaning plates 45 on the waist sides of the protective shell 46. There are bristles on the cleaning plates 45, and the bristles can clean the dust remaining on the inner side wall of the dust collection hopper 4. When the cleaning operation is not carried out, the cleaning plates 45 are blocked by the protective shell 46, avoiding the interference of the bristles on the cleaning plates 45 by the dust and impurities.

[0040] In summary: The driving motor 43 operates to drive the driving shaft 44 and the cleaning plates 45 to rotate. The bristles on the cleaning plates 45 clean the dust and impurities remaining on the inner side wall of the dust collection hopper 4, which is convenient for operation.

[0041] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas filtering and dust collecting device, characterized in that: include An exhaust gas filtering treatment box comprises an exhaust gas filtering box body (1), a bottom cover (2) assembled and connected to the bottom of the exhaust gas filtering box body (1), a dust collecting hopper (4) mounted on the bottom cover (2), an exhaust fan (7) connected to the exhaust outlet end of the exhaust gas filtering box body (1), an air intake duct (11) connected to the exhaust intake end of the exhaust gas filtering box body (1), and a support leg, wherein a fixing frame (12) for supporting the exhaust fan (7) is provided on the side of the exhaust gas filtering box body (1), a filter bag (13) is provided inside the exhaust gas filtering box body (1), and the support leg comprises a support leg (32) connected to the surface of the exhaust gas filtering box body (1), and a stabilizing block (31) whose top end is connected to the bottom surface of the support leg (32); The adjustment component comprises a fixed arm (51) mounted on the top surface of the exhaust gas filter box (1), an adjustment electric push rod (52) whose top end is connected to the end of the fixed arm (51), and a connection block (53) mounted on the surface of the bottom cover (2) and connected to the bottom end of the adjustment electric push rod (52); The pre-treatment filter assembly comprises a lifting electric push rod (61) whose bottom end is connected to a support leg (32) on one side, a horizontal plate (62) whose end is connected to the top of the lifting electric push rod (61), a sealing cover (63) connected to the middle position of the horizontal plate (62), and a pre-filter plate (64) with equidistantly distributed vertical sealing covers (63).

2. The exhaust gas filtering and dust collecting device according to claim 1, characterized in that: The pre-filter plates (64) arranged side by side on the sealing cover (63) are pre-filter plate a (64), pre-filter plate b (64), and pre-filter plate c (64) in sequence. The pre-filter plates (64) are provided with filter holes, and the apertures of the filter holes on the pre-filter plate a (64), the pre-filter plate b (64), and the pre-filter plate c (64) decrease in equal and different degrees.

3. The exhaust gas filtering and dust collecting device according to claim 1, characterized in that: The pre-filter plate (64) is parallel to the filter bag (13); a dust discharge port is provided on the bottom surface of the exhaust gas filter box (1); a material trough corresponding to the dust discharge port is provided on the bottom cover (2); the dust collecting hopper (4) is a cone structure that is wide at the top and narrow at the bottom, and the top end of the dust collecting hopper (4) is open; the dust collecting hopper (4) is opposite to the dust discharge port.

4. The exhaust gas filtering and dust collecting device according to claim 1, characterized in that: The fixed arm (51) comprises a vertical portion and a horizontal portion, the top end of the adjusting electric push rod (52) is connected to the end of the horizontal portion, and the lifting electric push rod (61) is parallel to the adjusting electric push rod (52) and the vertical portion.

5. The exhaust gas filtering and dust collecting device according to claim 1, characterized in that: The top surface of the exhaust gas filter box (1) is provided with a sealing groove that cooperates with the sealing cover (63), the sealing cover (63) and the surface of the exhaust gas filter box (1) are flush, and the bottom surface of the horizontal plate (62) is consistent with the surface opposite to the sealing cover (63).

6. The exhaust gas filtering and dust collecting device according to claim 1, characterized in that: The dust collecting hopper (4) is provided with a cleaning component inside, and the cleaning component comprises a cross arm (41) connected to the bottom cover (2), a motor box (42) connected to the center position of the cross arm (41), a driving motor (43) installed inside the motor box (42), a driving shaft (44) connected to the driving motor (43) at the top, a cleaning plate (45) symmetrically distributed at the bottom of the driving shaft (44), and a protective shell (46) installed in a split manner on the cleaning plate (45).

7. The exhaust gas filtering and dust collecting device according to claim 6, characterized in that: The bottom end of the driving motor (43) is a "T"-shaped structure, the cleaning plate (45) is in an inclined state, the cleaning plate (45) is tangent to the inner wall surface of the dust collecting hopper (4), and the cross-section of the cleaning plate (45) is an isosceles trapezoid.

8. The exhaust gas filtering and dust collecting device according to claim 7, characterized in that: The protective shell (46) is in the shape of an open isosceles trapezoid. The inner surface of the protective shell (46) matches the outer surface of the cleaning plate (45). The waist edge of the protective shell (46) is provided with a protrusion (461) embedded in the surface of the cleaning plate (45). The cleaning plate (45) is provided with bristles.

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