Filtering device

Abstract

This application provides a filtering device, the filtering device including a housing having a cavity; a dust-blocking device disposed in the cavity, such that the cavity is divided into a filtering cavity located above the dust-blocking device and a dust-collecting cavity located below the dust-blocking device; and a filtering device disposed in the filtering cavity for filtering dust-laden gas flowing through the filtering device; wherein the dust-blocking device includes a plurality of baffles, the plurality of baffles being spaced apart to form openings, allowing dust in the filtering cavity to pass through the openings into the dust-collecting cavity, and the plurality of baffles being further configured to prevent dust in the dust-collecting cavity from re-entering the filtering cavity through the dust-blocking device.

Description

Technical Field

[0001] This application relates to the field of filtration devices, and more specifically to a filtration device with a dust collection function. Background Technology

[0002] Gas transport systems typically include filtration devices to ensure the cleanliness of the transported gas. To maintain the filtration efficiency, the filters in these devices need to be cleaned regularly. However, cleaning the filters is quite tedious, therefore a device is needed that can ensure the cleanliness of the transported gas even when the filters are not cleaned in a timely manner. Summary of the Invention

[0003] This application provides a filtration device, the filtration device comprising:

[0004] A housing having a cavity;

[0005] A dust-blocking device, wherein the dust-blocking device is disposed in the cavity, such that the cavity is divided into a filter cavity located above the dust-blocking device and a dust collection cavity located below the dust-blocking device; and

[0006] A filter, disposed in the filter chamber, for filtering dusty gas flowing through the filter;

[0007] The dust-blocking device includes several baffles, which are spaced apart to form openings, allowing dust in the filter chamber to pass through the openings and enter the dust collection chamber. The baffles are also configured to prevent dust in the dust collection chamber from re-entering the filter chamber through the dust-blocking device.

[0008] According to the above-described filtering device, the plurality of baffles are arranged in one or more rows along the baffle arrangement direction X.

[0009] According to the above-mentioned filtration device, the baffle arrangement direction X is arranged parallel to the flow direction of the gas flowing through the filter or inclined to the flow direction of the gas flowing through the filter.

[0010] According to the above-mentioned filtering device, the plurality of baffles are arranged in multiple rows, and there is a vertical distance L between the bottom of the upper row of baffles and the top of the lower row of baffles in two adjacent rows.

[0011] According to the above-mentioned filtering device, the longitudinal cross-section of each of the plurality of baffles is straight, arc-shaped, or bent.

[0012] According to the above-described filtering device, the plurality of baffles are arranged obliquely or perpendicularly to the baffle arrangement direction X.

[0013] According to the above-mentioned filter device, the spacing between adjacent baffles along the baffle arrangement direction X gradually decreases along the airflow direction or adjacent baffles are evenly arranged along the baffle arrangement direction (X).

[0014] According to the above-described filtering device, the baffles along the baffle arrangement direction X include a first part of baffles near the upstream of the airflow and a second part of baffles near the downstream of the airflow. The spacing m between adjacent baffles of the first part of baffles is greater than the spacing n between adjacent baffles of the second part of baffles.

[0015] According to the above-mentioned filtering device, the plurality of baffles are arranged in a row along the baffle arrangement direction X. The baffles have a windward side surface facing the airflow and a leeward side surface facing away from the airflow. The baffles are tilted such that the windward side surface is located above the leeward side surface.

[0016] According to the above-mentioned filtering device, the plurality of baffles includes an upper row of baffles and a lower row of baffles, and the upper row of baffles and the lower row of baffles are respectively arranged along the baffle arrangement direction X;

[0017] Each of the upper row of baffles has a windward side surface facing the airflow and a leeward side surface facing away from the airflow, and each of the lower row of baffles has a windward side surface facing the airflow and a leeward side surface facing away from the airflow.

[0018] Each of the upper row of baffles is configured such that the windward side surface is above the leeward side surface, and each of the lower row of baffles is configured such that the windward side surface is below the leeward side surface.

[0019] According to the above-mentioned filtering device, one row of baffles in the upper row and the lower row is a straight baffle or an arc-shaped baffle, and the other row of baffles in the upper row and the lower row is a straight baffle or an arc-shaped baffle;

[0020] The straight baffle is inclined to the baffle arrangement direction X, and the chord of the arc-shaped baffle is inclined relative to the arrangement direction.

[0021] According to the above-mentioned filtration device, each of the upper row of baffles is an arc-shaped baffle, and the windward side surface of the arc-shaped baffle protrudes towards the filter cavity.

[0022] According to the above-mentioned filtering device, the acute angle θ between the straight baffle and the baffle arrangement direction X satisfies: 15°≤θ≤35°.

[0023] According to the above-mentioned filtering device, the radius r of the arc-shaped baffle satisfies: 8mm≤r≤15mm, and the acute angle w between the chord of the arc-shaped baffle and the baffle arrangement direction X satisfies: 15°≤w≤45°.

[0024] According to the above-mentioned filter device, the spacing L = 0 mm or the spacing L satisfies: 8 mm ≤ L ≤ 15 mm.

[0025] According to the above-mentioned filtration device, the filtration device further includes a vibration device, which is connected to the dust blocking device and is used to cause the dust blocking device to vibrate, so that the dust attached to the dust blocking device can enter the dust collection cavity through the opening.

[0026] According to the above-described filtration device, the plurality of baffles are coated with Teflon material.

[0027] The filtration device of this application can effectively prevent dust in the dust collection chamber from re-entering the filtration chamber, thereby ensuring the cleanliness of the gas passing through the filtration device.

[0028] Other features, advantages, and embodiments of this application may be set forth or become apparent from the following detailed description, accompanying drawings, and claims. Furthermore, it should be understood that the above description and the following detailed description are exemplary and intended to provide further explanation, without limiting the scope of the claimed application. However, the detailed description and specific examples only indicate preferred embodiments of this application. Various changes and modifications within the spirit and scope of this application will become apparent to those skilled in the art through these detailed descriptions. Attached Figure Description

[0029] These and other features and advantages of this application can be better understood by reading the following detailed description with reference to the accompanying drawings, wherein:

[0030] Figure 1A This is a perspective view of the filtration device of this application;

[0031] Figure 1B yes Figure 1A An exploded view of the filtration device is shown.

[0032] Figure 2 This is one embodiment of the dust-blocking device using the present application. Figure 1A Enlarged cross-sectional view of the area within the dashed box;

[0033] Figure 3 This is yet another embodiment of the dust-blocking device using the present application. Figure 1A Enlarged cross-sectional view of the area within the dashed box;

[0034] Figure 4 It is a simulation diagram of the dust-blocking device in the computer system;

[0035] Figures 5A-5B Is using Figure 3 The dust-blocking device shown is in Figure 4 The simulation results are shown in the diagram under the simulated conditions.

[0036] Figure 6 This is another embodiment of the dust-blocking device using the present application. Figure 1A Enlarged cross-sectional view of the area within the dashed box;

[0037] Figure 7 Is using Figure 6 The dust-blocking device shown is in Figure 4 The simulation results are shown in the diagram under the simulated conditions.

[0038] Figure 8 This is yet another embodiment of using several baffles from this application. Figure 1A Enlarged cross-sectional view of the area within the dashed box;

[0039] Figure 9 Is using Figure 8 The dust-blocking device shown is in Figure 4 The simulation results are shown in the diagram under the simulated conditions.

[0040] Figure 10 This is yet another embodiment of using several baffles from this application. Figure 1A Enlarged cross-sectional view of the area within the dashed box;

[0041] Figure 11 Is using Figure 10 The dust-blocking device shown is in Figure 4 The simulation results are shown in the diagram under the simulated conditions.

[0042] Figure 12 This is another embodiment of the dust-blocking device using the present application. Figure 1A Enlarged cross-sectional view of the area within the dashed box;

[0043] Figure 13 Is using Figure 12 The dust-blocking device shown is in Figure 4 The simulation results are shown in the figure under the simulated conditions.

[0044] Figure 14 It is a filter device with a vibration mechanism. Detailed Implementation

[0045] Various specific embodiments of this application will now be described with reference to the accompanying drawings, which form part of this specification. It should be understood that although directional terms such as "front," "rear," "up," "down," "left," "right," "top," and "bottom" are used in this application to describe various exemplary structural parts and elements, their use is merely for illustrative purposes and is based on the exemplary orientations shown in the drawings. Since the embodiments disclosed in this application can be arranged in different orientations, these directional terms are for illustrative purposes only and should not be considered limiting. In the following drawings, the same reference numerals are used for the same components.

[0046] Figure 1A This is a perspective view of the filter device 100 of this application; Figure 1B yes Figure 1A An exploded view of the filter device 100 is shown. Figure 1A-1B As shown, the filter device 100 includes a housing 102. Figure 1A-1B The housing 102 shown omits the front panel to better illustrate the internal structure of the filter device 100. The housing 102 is generally square and has a cavity 104.

[0047] The filter device 100 also includes a dust-blocking device 106. The dust-blocking device 106 includes a plurality of baffles 132 and a pair of plates 134. The plurality of baffles 132 are spaced apart to form openings. The plurality of baffles 132 are fixed to the pair of plates 134. The pair of plates 134 can engage with grooves (not shown) in the housing 102, thereby allowing the plurality of baffles 132 to be installed in the housing 102 via the pair of plates 134. The bottom of the filter device 100 maintains a distance D from the bottom of the cavity 104. The distance D satisfies: 0 mm < D ≤ the height of the cavity 104. The dust-blocking device 106 divides the cavity 104 into a filter cavity 122 located above the dust-blocking device 106 and a dust collection cavity 124 located below the dust-blocking device 106.

[0048] The filter cavity 122 has an air inlet opening 112 on its right side wall (the right side of the housing 102) and an air outlet opening 114 on its left side wall (the left side of the housing 102). The air inlet opening 112, the air outlet opening 114 and the filter cavity 122 are in fluid communication, so that gas flows into the filter cavity 122 from the air inlet opening 112 and can flow out of the filter device 100 through the air outlet opening 114.

[0049] The filtration device 100 also includes a filter 108 for filtering dust-laden gas flowing through it. The filter 108 consists of a plurality of electrostatic precipitator plates 142. Specifically, each of the electrostatic precipitator plates 142 is arranged vertically and parallel to each other in the front-to-back direction. Adjacent electrostatic precipitator plates 142 are spaced at a distance K such that airflow from the air inlet opening 112 can flow through the space between adjacent plates to the air outlet opening 114. The number of electrostatic precipitator plates 142 and the spacing K can be adjusted according to the required dust removal capacity. The electrostatic precipitator plates 142 can be fitted into holes (not shown) in the housing 102 using screws (not shown), thereby arranging them in the filter cavity 122. Alternatively, as another example, the electrostatic precipitator plates 142 can also be installed in the housing 102 using other connection methods (e.g., plug-in, snap-fit, etc.).

[0050] When the filtration device 100 is operating, several electrostatic precipitator plates 142 are energized, creating an electrostatic field in the space between them. Gas carrying dust (e.g., metal powder, wood chips, airborne dust, etc.) enters the filter chamber 122 through the gas inlet opening 112. The dust in the gas becomes charged in the electrostatic field and is subsequently adsorbed onto the electrostatic precipitator plates 142, while the gas flows out of the filtration device 100 through the space between the electrostatic precipitator plates 142 and exits through the gas outlet opening 114. Thus, the dust in the gas is filtered by the filter 108, and the gas exiting through the gas outlet opening 114 has a higher cleanliness level than the gas entering through the gas inlet opening 112. It should be noted that the cleanliness of the gas described in this application refers to the degree of dust content per cubic meter of gas. The more dust per cubic meter of gas, the lower the cleanliness level; conversely, the less dust per cubic meter of gas, the higher the cleanliness level.

[0051] When the filter device 100 is not operating, the electrostatic precipitator plates 142 are not energized, so there is no electrostatic field in the space between the electrostatic precipitator plates 142. The dust adsorbed on the electrostatic precipitator plates 142 falls off due to gravity, and the dust can pass through the openings between the baffles 132 and be collected in the dust collection cavity 124.

[0052] When the filter device 100 is running again, due to the velocity of the gas entering from the gas inlet 112, the gas will pass through the openings between the baffles 132 and enter the dust collection chamber 124. In the dust collection chamber 124, the gas, carrying dust from the dust collection chamber 124, returns to the filter chamber 122 through the openings between the baffles 132, resulting in a decrease in the cleanliness of the gas flowing out of the filter device 100.

[0053] The dust blocking device 106 of this application is configured to prevent the air from flowing into the dust collection chamber 124 from the filter chamber 122, and to prevent the gas carrying dust after entering the dust collection chamber 124 from entering the filter chamber 122, thereby ensuring the cleanliness of the gas flowing out of the filter device 100.

[0054] For ease of explanation, in the embodiments of this application, the airflow velocity is 2.5 m / s and the direction of gas movement is horizontal, so as to describe the movement state of the gas after it enters the filter device 100 from the gas inlet opening 112 when the filter device 100 is run again (i.e., the dust collection cavity 124 has contained dust).

[0055] Figure 2 This is one embodiment of the dust-blocking device 106 of this application. Figure 1A An enlarged cross-sectional view of the area within the dashed box shows the specific structure and arrangement of several baffles 132. For example... Figure 2 As shown, several baffles 132 are arranged along the baffle arrangement direction X (e.g., Figure 2 The baffles (shown as dashed lines) are arranged in a row, and each of the baffles 132 is a straight baffle. Each baffle is arranged at an angle relative to the baffle arrangement direction X, and the angles are the same. The baffle arrangement direction X is parallel to the flow direction of the gas through the filter 108. The acute angle θ between each baffle and the baffle arrangement direction X satisfies: 15° ≤ θ ≤ 35°. Each baffle has a windward side surface 204 facing the airflow and a leeward side surface 206 facing away from the airflow. The baffles 132 are arranged at an angle such that the windward side surface 204 is above the leeward side surface 206.

[0056] Specifically, in Figure 2 In the illustrated embodiment, each baffle is a straight plate and has the same dimensions. The baffles are arranged at equal intervals along a direction parallel to the bottom surface of the housing 102 (i.e., the baffle arrangement direction X), such that the center point of each baffle lies on a straight line (i.e., ... Figure 2 (As shown by the dashed line). The upper part of each baffle is tilted to the left, and the acute angle θ between each baffle and the baffle arrangement direction X is the same.

[0057] Figure 2 The dashed line with an arrow indicates the flow state of gas in the filter device 100 when the dust blocking device 106 is not installed; Figure 2 A solid line with an arrowhead indicates that, for example, ... Figure 2The diagram shows the flow state of gas within the filter device 100 at the several baffles 132. Specifically, without the dust-blocking device 106 in the filter device 100, when the gas flows horizontally from right to left, a portion of the gas entering the filter device 100 flows horizontally from right to left, while another portion flows towards the bottom of the filter device 100. The gas flowing towards the bottom of the filter device 100 carries dust from the bottom of the filter device 100 (dust at the bottom of the filter device 100 is shown as dotted shades) out of the filter device 100, resulting in a lower cleanliness of the gas exiting the filter device 100. However, when the filter device 100 is equipped with the dust-blocking device 106, the baffles are arranged at an angle such that the windward side surface 204 is above the leeward side surface 206, thereby effectively blocking the airflow that may enter the dust collection chamber 124. In this way, by effectively preventing airflow from entering the dust collection chamber 124, the possibility of gas carrying dust from the dust collection chamber 124 out of the filter device 100 can be reduced, thereby ensuring the cleanliness of the gas flowing out of the filter device 100.

[0058] Figure 3 This is yet another embodiment of the dust-blocking device 106 of this application. Figure 1A The enlarged cross-sectional view within the dashed box illustrates the specific structure and arrangement of several baffles 132. For example... Figure 3 As shown, several baffles 132 are arranged in two rows vertically, namely, an upper row of baffles 302 and a lower row of baffles 304. Each baffle in the upper row of baffles 302 and the lower row of baffles 304 is arranged along the baffle arrangement direction X (e.g., ...). Figure 3 The dotted lines shown in the diagram are evenly distributed. Each of the several baffles 132 is a straight baffle.

[0059] Specifically, each baffle 306 in the upper row of baffles 302 is arranged at an angle relative to the baffle arrangement direction X, and the angles are all in the same direction. Each baffle 306 is configured such that its upper part is tilted to the left, and the acute angle θ1 between the baffle 306 and the baffle arrangement direction X satisfies: 15° ≤ θ1 ≤ 35°. Each baffle 306 in the upper row of baffles 302 has a windward side surface 312 facing the airflow and a leeward side surface 314 facing away from the airflow. The tilting arrangement of the baffles 306 allows the windward side surface 312 to be positioned above the leeward side surface 314.

[0060] Each baffle 308 in the lower row of baffles 304 is arranged at an angle relative to the baffle arrangement direction X, and the angles are all in the same direction. The upper part of each baffle 308 in the lower row of baffles 304 is tilted to the right, and the acute angle θ2 between the baffle 308 and the baffle arrangement direction X satisfies: 15°≤θ2≤35°. Each baffle 308 in the lower row of baffles 304 has a windward side surface 322 facing the airflow and a leeward side surface 324 facing away from the airflow. The tilting arrangement of the baffles 308 allows the windward side surface 322 to be located below the leeward side surface 324.

[0061] Figure 3 A solid line with an arrowhead indicates a setting such as... Figure 3 The diagram illustrates the flow state of gas within the filter device 100 when several baffles 132 are present. Specifically, when the filter device 100 is equipped with a dust-blocking device 106, the upper row of baffles 302 is arranged at an angle, causing the windward side surface 312 to be positioned above the leeward side surface 314. This effectively blocks any gas that might enter the dust collection chamber 124. Even if a small portion of the gas flows into the dust collection chamber 124 through the openings between the baffles 132, the airflow carrying dust from the dust collection chamber 124 will impact the windward side surface 322 of the lower row of baffles 304 as it flows upward. The dust, being heavier, falls upon impact, while the gas can return to the filter chamber 122 through the openings between the baffles 132. In this way, the airflow entering the dust collection chamber 124 is effectively prevented, and the gas carrying dust from the dust collection chamber 124 is also prevented from flowing out of the dust collection chamber 124, thereby ensuring the cleanliness of the gas exiting the filter device 100.

[0062] Figure 4 This is a simulation diagram of the dust-blocking device 106 in a computer system. (Example) Figure 4 As shown, in computer simulation, such as Figure 1A The filter device 100 shown has a dust collection chamber 124 at the bottom containing 5mm of dust. A dust-blocking device 106 is installed at a distance of J = 30mm from the bottom of the dust collection chamber 124.

[0063] Figures 5A-5B For use Figure 3 The dust-blocking device 106 shown is in Figure 4 The simulation results are shown in the diagram under the simulated conditions. Specifically, the acute angle θ1 between each baffle 306 in the upper row of baffles 302 and the baffle arrangement direction X, and the acute angle θ2 between each baffle 308 in the lower row of baffles 304 and the baffle arrangement direction X, satisfy: θ1=θ2, the horizontal spacing between adjacent baffles is 12mm, and the length of baffles 306 and 308 is 15mm.

[0064] Figure 5AIn the diagram, a, b, c, d, e, and f correspond to simulations when θ1 and θ2 are 15°, 30°, 35°, 45°, 55°, and 75°, respectively. From... Figure 5A As can be seen, when θ1 and θ2 are 15°, 30°, and 35°, the bottom of the dust collection cavity 124 has a certain amount of dust (i.e., the dark part in the figure), which is not carried away by the airflow above the dust blocking device 106. However, when θ1 and θ2 are 45°, 55°, and 75°, very little dust remains at the bottom of the dust collection cavity 124, as it is carried away by the airflow above the dust blocking device 106.

[0065] Figure 5B The percentage of remaining dust is further shown at different acute angles θ1 and θ2. Figure 5B As can be seen, when the acute angle between the baffles is θ1 = θ2 = 35°, the percentage of remaining dust drops sharply from approximately 90%. Therefore, when 15° ≤ θ ≤ 35° (i.e., 15° ≤ θ1 ≤ 35° and 15° ≤ θ2 ≤ 35°), the dust-blocking device 106 can effectively retain dust in the dust collection cavity 124.

[0066] Although the acute angle θ1 between each baffle 306 in the upper row of baffles 302 and the baffle arrangement direction X and the acute angle θ2 between each baffle 308 in the lower row of baffles 304 and the baffle arrangement direction X are shown in this application, those skilled in the art will understand that the acute angles θ1 and θ2 may not be equal.

[0067] Figure 6 This is another embodiment of the dust-blocking device 106 of this application. Figure 1A The enlarged cross-sectional view at the position of the dashed box in the middle shows the specific structure and arrangement of several baffles 132. Figure 6 and Figure 3 The difference in the arrangement of the middle baffles lies in, Figure 6 The spacing between adjacent baffles 132 shown is not exactly the same, and Figure 6 The acute angles θ1 and θ2 of the several baffles 132 shown have a wider range of values. Specifically, the several baffles 132 include a first part of baffles near the air inflow opening 112 (right side, i.e., upstream of the airflow) and a second part of baffles near the air outflow opening 114 (left side, i.e., downstream of the airflow). In the first part of baffles, the distance between horizontally adjacent baffles is m. In the second part of baffles, the distance between horizontally adjacent baffles is n. Wherein, the distance m > the distance n. The acute angle θ1 between each baffle 306 in the upper row of baffles 302 and the baffle arrangement direction X satisfies: 15° ≤ θ1 ≤ 45°. The acute angle θ2 between each baffle 308 in the lower row of baffles 304 and the baffle arrangement direction X satisfies: 15° ≤ θ2 ≤ 45°.

[0068] As described Figure 3 As described above, when a small portion of the gas flows into the dust collection chamber 124 through the openings between the baffles 132, the gas carrying dust from the dust collection chamber 124 flows upward and impacts the windward surface 322 of the lower baffle 304. The dust, due to its greater mass, falls after being impacted, while the gas can return to the filter chamber 122 through the openings between the baffles 132. Figure 6 In the illustrated embodiment, the spacing n and spacing m are configured such that the spacing n between the second set of baffles is smaller than the spacing m between the first set of baffles. This further increases the likelihood that the airflow carrying dust from the dust collection chamber 124 will impact the windward surface 322 of the lower baffle 304. Furthermore, larger acute angles θ1 and θ2 facilitate dust falling into the dust collection chamber 124. Thus, while allowing more dust to fall into the dust collection chamber 124, it also hinders the airflow carrying dust from the dust collection chamber 124 from flowing out of the dust collection chamber 124, thereby ensuring the cleanliness of the gas exiting the filter device 100.

[0069] Figure 7 For use Figure 6 The dust-blocking device 106 shown is in Figure 4 The simulation results are shown under the simulated conditions. Specifically, Figure 7 The acute angle θ1 between each baffle 306 in the upper row of baffles 302 and the baffle arrangement direction X, and the acute angle θ2 between each baffle 308 in the lower row of baffles 304 and the baffle arrangement direction X, satisfy: θ1=θ2=45°, and the spacing m is 13mm, the spacing n is 7mm, and the length of baffles 306 and 308 is 15mm. Figure 7 As can be seen, a significant amount of dust tends to accumulate on the left side of the dust collection chamber 124, at which point the percentage of remaining dust can reach 91.3%.

[0070] Those skilled in the art will also understand that the baffles 132 may not be divided into a first baffle on the right and a second baffle on the left. Instead, the baffles 132 may be configured such that the spacing between adjacent baffles in each row gradually decreases along the airflow direction (i.e., from right to left). This can also achieve the purpose of preventing the airflow carrying dust in the dust collection chamber 124 from flowing out of the dust collection chamber 124 and ensuring the cleanliness of the gas flowing out of the filter device 100.

[0071] Although in this application Figure 3 and Figure 6 The several baffles 132 shown are arranged in two rows. Those skilled in the art will understand that bent baffles arranged in a row can also be used, which are also within the scope of protection of this application and can achieve the purpose of this application.

[0072] Figure 8This is yet another embodiment using several baffles 132 of this application. Figure 1A The enlarged cross-sectional view at the position of the dashed box in the middle shows the specific structure and arrangement of several baffles 132. Figure 8 and Figure 3 The difference in the arrangement of the middle baffles lies in, Figure 8 The vertical distance L between the bottom of the upper row of baffles 302 and the top of the lower row of baffles 304 shown satisfies: 8mm ≤ L ≤ 15mm, and Figure 3 The bottom of the upper row of baffles 302 and the top of the lower row of baffles 304 are arranged adjacent to each other in the vertical direction, that is, their spacing L = 0 mm.

[0073] and Figure 3 Compared to the arrangement of the baffles shown, the vertical spacing between the upper row of baffles 302 and the lower row of baffles 304 is more effective in preventing dust from being carried back to the filter chamber 122 after entering the dust collection chamber 124. This is because when there is a vertical spacing between the upper row of baffles 302 and the lower row of baffles 304, the velocity of the airflow flowing from the filter chamber 122 toward the dust collection chamber 124 will decrease in stages (i.e., the velocity decreases twice when passing through the upper row of baffles 302 and the lower row of baffles 304). This allows the airflow to experience a greater velocity reduction than after passing through two closely arranged rows of baffles, and the lower velocity airflow is less likely to carry dust.

[0074] Figure 9 For use Figure 8 The dust-blocking device 106 shown is in Figure 4 The simulation results are shown under the simulated conditions. Specifically, Figure 7 The acute angle θ1 between each baffle 306 in the upper row of baffles 302 and the baffle arrangement direction X, and the acute angle θ2 between each baffle 308 in the lower row of baffles 304 and the baffle arrangement direction X, satisfy: θ1=θ2=30°, and the spacing L is 10mm. Figure 9 As can be seen, the dust deposited in the dust collection cavity 124 is relatively uniform in the horizontal direction, and the percentage of remaining dust can reach 98.1%.

[0075] Figure 10 This is yet another embodiment of the use of several baffles 132 of this application. Figure 1A The enlarged cross-sectional view at the position of the dashed box in the middle shows the specific structure and arrangement of several baffles 132. Figure 10 and Figure 2 The difference in the arrangement of the middle baffles lies in, Figure 2 The acute angle θ between each of the several baffles 132 shown and the baffle arrangement direction X satisfies: 15°≤θ≤35°, and Figure 10Each of the several baffles 132 shown is arranged perpendicular to the baffle arrangement direction X. Specifically, Figure 10 The filter chamber 122 contains several baffles 132, including long baffles and short baffles, which are arranged alternately and are evenly distributed along the baffle arrangement direction X. The bottoms of the long and short baffles are flush. The vertically arranged baffles are more conducive to dust in the filter chamber 122 falling into the dust collection chamber 124.

[0076] Figure 11 For use Figure 10 The dust-blocking device 106 shown is in Figure 4 The simulation results are shown under the simulated conditions. Specifically, Figure 11 The long baffle is 12mm long, the short baffle is 8mm long, and the distance between the long and short baffles is 6mm. From Figure 11 As can be seen, a significant amount of dust tends to accumulate on the left side of the dust collection chamber 124, at which point the percentage of remaining dust can reach 46.5%.

[0077] Although each baffle in the same row in this application has the same size and shape, those skilled in the art will understand that, in accordance with the spirit of this application, arrangements in which each baffle has a different size also fall within the protection scope of this application.

[0078] Although each of the plurality of baffles 132 shown in this application has the same acute angle θ with the baffle arrangement direction X, those skilled in the art will understand that the acute angle θ between each of the plurality of baffles 132 and the baffle arrangement direction X may not be the same.

[0079] Furthermore, in this application, taking the gas flow direction as horizontal as an example, the baffle arrangement direction X is arranged parallel to the gas flow direction and the bottom surface of the dust collection cavity 124. However, those skilled in the art will understand that the baffle arrangement direction X can be arranged not parallel to the gas flow direction (i.e., arranged at an angle), or it can be arranged not parallel to the bottom surface of the dust collection cavity 124.

[0080] Figure 12 This is another embodiment of the dust-blocking device 106 of this application. Figure 1A An enlarged cross-sectional view of the area within the dashed box shows the specific structure and arrangement of several baffles 132. For example... Figure 12 As shown, several baffles 132 are arranged in two rows vertically, namely, an upper row of baffles 302 and a lower row of baffles 304. Each baffle in the upper row of baffles 302 and the lower row of baffles 304 is arranged along the baffle arrangement direction X (e.g., ...). Figure 12 (as shown by the dashed lines). Each of the several baffles 132 is an arc-shaped baffle.

[0081] Specifically, each baffle 306 in the upper row of baffles 302 is arranged at an angle relative to the baffle arrangement direction X, and the angles are in the same direction. Each baffle 306 is configured such that its upper part is tilted to the left, and the acute angle w1 between the chord of the baffle 306 and the baffle arrangement direction X satisfies: 15° ≤ w1 ≤ 50°. Here, the chord of the baffle refers to the straight line connecting the two ends of the baffle 306. The radius r1 of the baffle 306 satisfies: 8mm ≤ r1 ≤ 15mm. Each baffle 306 in the upper row of baffles 302 has a windward side surface 312 facing the airflow and a leeward side surface 314 facing away from the airflow. The tilting arrangement of the baffles 306 allows the windward side surface 312 to be positioned above the leeward side surface 314.

[0082] Each baffle 308 in the lower row of baffles 304 is arranged at an angle relative to the baffle arrangement direction X, and the angles are in the same direction. Each baffle 308 in the lower row of baffles 304 is configured such that its upper part is tilted to the left, and the acute angle w2 between the chord of the baffle 308 and the baffle arrangement direction X satisfies: 15° ≤ w2 ≤ 50°. Here, the chord of the baffle refers to the straight line connecting the two ends of the baffle 308. The radius r2 of the baffle 308 satisfies: 8mm ≤ r2 ≤ 15mm. Each baffle 308 in the lower row of baffles 304 has a windward side surface 322 facing the airflow and a leeward side surface 324 facing away from the airflow. The tilting arrangement of the baffles 308 allows the windward side surface 322 to be located below the leeward side surface 324.

[0083] Because the upper row of baffles 302 is arranged at an angle, the windward side surface 312 is located above the leeward side surface 314, and the baffles 306 in the upper row of baffles 302 are arc-shaped, the windward side surface 312 protrudes towards the filter cavity 122. The area of ​​the windward side surface 312 is larger than that of the leeward side surface 314, which allows the windward side surface 312 to more effectively block the airflow that may enter the dust collection cavity 124. Similarly, for the lower row of baffles 304, the area of ​​the windward side surface 322 is larger than that of the leeward side surface 324, so the windward side surface 322 can more effectively prevent the airflow carrying dust from the dust collection cavity 124 from flowing out of the dust collection cavity 124. Furthermore, the fact that each baffle 306 in the upper row of baffles 302 and each baffle 308 in the lower row of baffles 304 are arc-shaped baffles facilitates the easier entry of dust into the dust collection chamber 124 through the openings between the baffles after it falls from the filter chamber 122. Additionally, since the windward side surface 312 of the upper row of baffles 302 is arc-shaped, when the airflow in the filter chamber 122 contacts the arc-shaped windward side surface 312 and flows horizontally, the arc-shaped windward side surface 312 provides lower wind resistance.

[0084] Figure 13 For use Figure 12 The dust-blocking device 106 shown is in Figure 4The simulation results are shown in the diagram under the simulated conditions. Specifically, the acute angle w1 between the chord of baffle 306 and the baffle arrangement direction X satisfies: w1 = 30°; the acute angle w2 between the chord of baffle 308 and the baffle arrangement direction X satisfies: w2 = 50°; the radii r1 of baffle 306 and r2 of baffle 308 satisfy: r1 = r2 = 12 mm. Under this configuration, the percentage of remaining dust can reach 94.9%. Therefore, when 15° ≤ w ≤ 35° (i.e., 15° ≤ w1 ≤ 50° and 15° ≤ w2 ≤ 50°) and 8 mm ≤ r ≤ 15 mm (i.e., 8 mm ≤ r1 ≤ 15 mm and 8 mm ≤ r2 ≤ 15 mm), the dust-blocking device 106 can effectively retain dust in the dust collection cavity 124.

[0085] Although this application only describes the cases where both the upper row baffle 302 and the lower row baffle 304 are straight baffles and both the upper row baffle 302 and the lower row baffle 304 are curved baffles, those skilled in the art will understand that straight baffles and curved baffles can be used together, that is, one row of the upper row baffles and the lower row baffles are straight baffles or curved baffles, and the other row is straight baffles or curved baffles.

[0086] Furthermore, embodiments of this application illustrate different configurations: when the baffles 132 are arranged in a row, their windward side surface 204 is positioned above the leeward side surface 206 (i.e., the windward side surface 204 faces the upstream direction of the airflow); and when the baffles 132 are arranged in two rows, each baffle 306 in the upper row of baffles 302 is positioned with its windward side surface 312 positioned above the leeward side surface 314 (i.e., the windward side surface 312 faces the upstream direction of the airflow). Such configurations prevent airflow from entering the dust collection chamber 124 through the dust-blocking device 106.

[0087] Furthermore, it should be noted that although only embodiments of baffles 132 arranged in one row and two rows are shown in this application, those skilled in the art will understand that cases where baffles 132 are arranged in more than two rows also fall within the protection scope of this application.

[0088] Figure 14 This is a filter device 100 with a vibration device 1201. For example... Figure 14As shown, the filter device 100 also includes a vibration device 1201 disposed in the housing 102. The vibration device 1201 has an output rod 1202, which is connected to the dust blocking device 106. When the vibration device 1201 is activated, the output rod drives the dust blocking device 106 to vibrate, thereby causing the dust adhering to the dust blocking device 106 to vibrate as well. The vibrated dust can fall into the dust collection chamber 124 through the openings between the baffles and is eventually collected in the dust collection chamber 124. This can reduce the amount of dust adhering to the surface of the dust blocking device 106, thereby reducing the amount of dust entrained by the airflow through the filter chamber 122, so as to ensure the cleanliness of the gas flowing out of the filter device 100.

[0089] As an example, the vibration device 1201 may include a motor or vibrator, etc.

[0090] As another example, the vibration device 1201 can be disposed outside the housing 102 and connected to the dustproof device 106 via a connecting component.

[0091] The baffles 132 of this application can be coated with Teflon material. The Teflon material can make the surface of the baffles 132 smooth, so that the dust falling from the filter cavity 122 is not easy to adhere to the baffles 132, and is more likely to fall into the dust collection cavity 124 through the opening between the baffles 132.

[0092] Those skilled in the art will understand that the filter 108 in this application may also be in other forms besides the electrostatic precipitator 142, such as a bag filter or a granular layer filter.

[0093] Although only some features of this application have been illustrated and described herein, many modifications and variations will be apparent to those skilled in the art. Therefore, it should be understood that the appended claims are intended to cover all such modifications and variations that fall within the essential spirit and scope of this application.

Claims

1. A filtration device (100), characterized in that: The filter device (100) includes: A housing (102) having a cavity (104); A dust-blocking device (106) is disposed in the cavity (104), such that the cavity (104) is divided into a filter cavity (122) located above the dust-blocking device (106) and a dust collection cavity (124) located below the dust-blocking device (106); and A filter (108) is disposed in the filter chamber (122) for filtering dusty gas flowing through the filter (108); The dust-blocking device (106) includes a plurality of baffles (132), which are spaced apart to form openings, allowing dust in the filter chamber (122) to pass through the openings and enter the dust collection chamber (124). Furthermore, the baffles (132) are configured to prevent dust in the dust collection chamber (124) from re-entering the filter chamber (122) through the dust-blocking device (106). The plurality of baffles (132) are configured in any of the following ways: Case (1) – The plurality of baffles (132) are arranged in one or more rows along the baffle arrangement direction (X) and the plurality of baffles (132) are inclined relative to the baffle arrangement direction (X), wherein each baffle in a row adjacent to the filter cavity (122) has a windward side surface facing the airflow and a leeward side surface facing away from the airflow, and each baffle in a row adjacent to the filter cavity (122) is configured such that the windward side surface is located above the leeward side surface; or Case (2) - The plurality of baffles (132) are configured to be arranged in one or more rows along the baffle arrangement direction (X) and the plurality of baffles (132) are arranged perpendicular to the baffle arrangement direction (X), wherein the baffles in each of the one or more rows include long baffles and short baffles, and the long baffles and the short baffles are arranged alternately.

2. The filtration device (100) according to claim 1, characterized in that: The baffles are arranged in a direction (X) parallel to or inclined to the direction of gas flow through the filter (108).

3. The filtration device (100) according to claim 1, characterized in that: The plurality of baffles (132) are arranged in multiple rows, and there is a vertical distance between the bottom of the upper row of baffles and the top of the lower row of baffles in two adjacent rows.

4. The filtration device (100) according to claim 1, characterized in that: Each of the plurality of baffles (132) has a longitudinal cross-section that is straight, arc-shaped, or bent.

5. The filtration device (100) according to claim 1, characterized in that: The spacing between adjacent baffles along the baffle arrangement direction (X) gradually decreases along the airflow direction or adjacent baffles are evenly arranged along the baffle arrangement direction (X).

6. The filtration device (100) according to claim 1, characterized in that: The baffles along the baffle arrangement direction (X) include a first portion of baffles near the upstream of the airflow and a second portion of baffles near the downstream of the airflow, wherein the spacing between adjacent baffles of the first portion of baffles is greater than the spacing between adjacent baffles of the second portion of baffles.

7. The filtration device (100) according to claim 1, characterized in that: In the case (1), the plurality of baffles (132) are arranged in a row along the baffle arrangement direction (X), each of the plurality of baffles having a windward side surface facing the airflow and a leeward side surface facing away from the airflow, the baffles being tilted such that the windward side surface of each baffle is located above the leeward side surface.

8. The filtration device (100) according to claim 1, characterized in that: In the case (1), the plurality of baffles (132) include an upper row of baffles (302) and a lower row of baffles (304), the upper row of baffles (302) and the lower row of baffles (304) being arranged along the baffle arrangement direction (X); Each of the upper row of baffles (302) has a windward side surface facing the airflow and a leeward side surface facing away from the airflow, and each of the lower row of baffles (304) has a windward side surface facing the airflow and a leeward side surface facing away from the airflow; and Each of the upper row of baffles (302) is configured such that the windward side surface is above the leeward side surface, and each of the lower row of baffles (304) is configured such that the windward side surface is below the leeward side surface.

9. The filtration device (100) according to claim 8, characterized in that: One row of baffles in the upper row of baffles (302) and the lower row of baffles (304) is a straight baffle or an arc-shaped baffle, and the other row of baffles in the upper row of baffles (302) and the lower row of baffles (304) is a straight baffle or an arc-shaped baffle; The straight baffle is inclined to the baffle arrangement direction (X), and the chord of the arc-shaped baffle is inclined to the baffle arrangement direction (X).

10. The filtration device (100) according to claim 9, characterized in that: Each of the upper row of baffles (302) is an arc-shaped baffle, and the windward side surface of the arc-shaped baffle protrudes toward the filter cavity (122).

11. The filtration device (100) according to claim 9, characterized in that: The acute angle θ between the straight baffle and the baffle arrangement direction (X) satisfies: 15°≤θ≤35°.

12. The filtration device (100) according to claim 9, characterized in that: The radius r of the arc-shaped baffle satisfies: 8mm≤r≤15mm, and the acute angle w between the chord of the arc-shaped baffle and the baffle arrangement direction (X) satisfies: 15°≤w≤50°.

13. The filtration device (100) according to claim 3, characterized in that: The spacing L = 0 mm or the spacing L satisfies: 8 mm ≤ L ≤ 15 mm.

14. The filtration device (100) according to claim 1, characterized in that: The filter device (100) further includes: A vibration device (1201) is connected to the dust blocking device (106) and is used to cause the dust blocking device (106) to vibrate, so that dust adhering to the dust blocking device (106) can enter the dust collection chamber (124) through the opening.

15. The filtration device (100) according to claim 1, characterized in that: The plurality of baffles (132) are coated with Teflon material.

16. The filter device (100) according to claim 1, in the case (2), the long baffles and the short baffles in each of the row or the multiple rows are evenly arranged along the baffle arrangement direction (X) and are flush at the bottom.

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