Filter element and liquid removal device

Abstract

The utility model provides a filter element and a liquid removal device, and relates to the technical field of industrial gas treatment.The filter element comprises a flow guide structure, the flow guide structure comprises a first end face and a second end face which are opposite, and the flow guide structure is arranged in the direction from the first end face to the second end face; a bent and extending channel is arranged in the flow guide structure, one end of the channel is communicated with the first end face and forms an inlet, and the other end of the channel is communicated with the second end face and forms an outlet.

Description

Technical Field

[0001] This utility model relates to the field of industrial gas treatment technology, and in particular to a filter element and a liquid removal device. Background Technology

[0002] In industrial production processes, liquid droplets carried in gases can adversely affect equipment operation and product quality. Therefore, liquid removal devices are widely used in chemical, petroleum, and pharmaceutical industries.

[0003] Commonly used liquid removal devices include: baffle demisters, wire mesh demisters, cyclone separators, and fiber demisters. These devices mainly remove liquid droplets from the gas through gravity separation, inertial impaction, or filtration.

[0004] Baffle-type demisters utilize changes in gas flow direction to cause droplets to collide and coalesce on the baffles, thus achieving gas-liquid separation. Wire mesh demisters use a multi-layered metal wire mesh filter layer to separate droplets through collision and agglomeration on the mesh surface. Cyclone separators use centrifugal force to separate droplets from the gas, while fiber demisters remove tiny droplets through the filtration effect of fiber materials.

[0005] However, these devices have some limitations in practical applications: baffle-type liquid separators lack baffles around their edges, allowing some gas to pass directly through without collision, making it impossible to guarantee that all gas undergoes liquid removal; cyclone separators have low efficiency in separating small droplets and generate significant noise during operation; wire mesh demisters and fiber demisters are prone to clogging, resulting in high maintenance costs. These problems, to some extent, affect the effectiveness and economic benefits of liquid removal devices. Utility Model Content

[0006] The purpose of this invention is to provide a filter element and a liquid removal device to alleviate the technical problem of poor cleaning effect of existing liquid removal devices.

[0007] In a first aspect, the present invention provides a filter element comprising:

[0008] A flow guiding structure includes a first end face and a second end face facing each other. Along the direction from the first end face to the second end face, a bent and extended channel is provided inside the flow guiding structure. One end of the channel is connected to the first end face to form an inlet, and the other end is connected to the second end face to form an outlet.

[0009] Furthermore, the number of channels is at least two.

[0010] Furthermore, the flow guiding structure includes multiple multi-bend fins, each of which is arranged in parallel and spaced apart, and the gap between two adjacent multi-bend fins forms the channel.

[0011] Furthermore, the front-to-back distance between two adjacent multi-bent fins is less than the front-to-back length of the multi-bent fin.

[0012] Furthermore, the range of the front-to-back distance between two adjacent multi-bend fins is 10mm-20mm.

[0013] Furthermore, the filter element also includes a top plate and a first side plate, the top plate being provided with through holes penetrating its upper and lower surfaces, the through holes being connected to the outlet;

[0014] There are two first side plates. One first side plate is connected to the left edge of each of the multi-bent fins to close the gap formed by two adjacent multi-bent fins from the left. The other first side plate is connected to the right edge of each of the multi-bent fins to close the gap formed by two adjacent multi-bent fins from the right.

[0015] Furthermore, the filter element also includes a second side plate, and there are two second side plates. One of the second side plates is located on the front side of the flow guiding structure and is connected to the bottom surface of the top plate, and the other second side plate is located on the rear side of the flow guiding structure and is connected to the bottom surface of the top plate.

[0016] The left and right sides of the second side plate are respectively connected to the two first side plates, so that the first side plates and the second side plates form a cylindrical structure, and the through hole is located inside the area enclosed by the cylindrical structure.

[0017] Furthermore, the top surface of the top plate is a slope, and the cross-sectional area of ​​the top surface of the top plate gradually decreases from top to bottom. The through hole is located at the lowest position of the top plate.

[0018] Secondly, the present invention provides a liquid removal device, including the above-mentioned filter element. The liquid removal device also includes a housing, on which an air inlet and an air outlet are provided. The flow guiding structure is disposed between the air inlet and the air outlet, and the circumferential outer wall of the flow guiding structure is sealed to the circumferential inner wall of the housing, so that the gas entering through the air inlet flows into the air outlet only after passing through the channel.

[0019] Thirdly, the present invention provides a liquid removal device, including the above-mentioned filter element. The liquid removal device also includes a housing, on which an air inlet and an air outlet are provided. The flow guiding structure is disposed between the air inlet and the air outlet. Furthermore, the circumferential outer wall of the top plate is sealed to the circumferential inner wall of the housing, so that the gas entering through the air inlet flows into the air outlet only after passing through the channel.

[0020] This utility model has at least the following advantages or beneficial effects:

[0021] The filter element provided by this utility model includes: a flow guiding structure, the flow guiding structure including a first end face and a second end face opposite to each other, the flow guiding structure having a bent and extended channel inside, one end of the channel communicating with the first end face to form an inlet, and the other end communicating with the second end face to form an outlet.

[0022] After the gas-liquid mixture enters through the filter element inlet, as it passes through the tortuous channel, the droplets in the gas-liquid mixture come into contact with the tortuous channel wall, resulting in a higher droplet collision and adhesion rate. Then, under the action of gravity, the droplets flow back to the lower end, making it easier for the gas and liquid to separate and achieve the dehumidification effect. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A cross-sectional view of the filter element provided in Embodiment 1 of this utility model;

[0025] Figure 2 A schematic diagram of the filter element provided in Embodiment 2 of this utility model;

[0026] Figure 3 This is a front view of the filter element provided in Embodiment 2 of this utility model;

[0027] Figure 4 A bottom view of the filter element provided in Embodiment 2 of this utility model;

[0028] Figure 5 This is a cross-sectional view of the filter element provided in Embodiment 2 of this utility model;

[0029] Figure 6 This is a schematic diagram of the internal structure of the liquid removal device provided in Embodiment 4 of this utility model.

[0030] Icons: 1 - airflow guide structure; 2 - channel; 3 - multi-bent fins; 4 - top plate; 5 - first side plate; 6 - second side plate; 7 - through hole; 8 - shell; 9 - air inlet; 10 - air outlet. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Example 1

[0038] like Figure 1 As shown, the filter element provided by this utility model is installed in the air passage of the liquid removal device to remove liquid from the gas flowing through the air passage, thereby obtaining gas with lower humidity and liquid droplets.

[0039] The filter element includes a flow guiding structure 1, which includes a first end face and a second end face facing each other. In this embodiment, the first end face faces downward and the second end face faces upward. Along the direction from the first end face to the second end face, the flow guiding structure 1 has a bent and extending channel 2. The bend can be a continuous "Z" shape. One end of the channel 2 is connected to the first end face to form an inlet, and the other end is connected to the second end face to form an outlet.

[0040] After the gas-liquid mixture enters through the filter element inlet, as it passes through the tortuous channel 2, the droplets in the gas-liquid mixture come into contact with the wall of the tortuous channel 2, resulting in a higher droplet collision and adhesion rate. Then, under the action of gravity, the droplets flow back to the lower end, making it easier for the gas and liquid to separate and achieve the dehumidification effect.

[0041] In a limited space, to improve liquid removal efficiency, the number of channels 2 must be at least two. The more channels 2 there are, the smaller their width becomes. An excessively narrow channel width may cause blockage, especially if the filtered droplets are prone to crystallization or have high viscosity. Therefore, in this design, the width of channel 2 can be set to 10mm-20mm, for example, 15mm. Channel 2 can be formed by two adjacent multi-bent fins 3, which are parallel and spaced apart. The width of channel 2 refers to the longitudinal length between two adjacent multi-bent fins 3.

[0042] The front-to-back distance between two adjacent multi-bend fins 3 is less than the front-to-back length of the multi-bend fin 3, so that the gas-liquid mixture collides with the fin when passing through each bend, thus increasing the collision frequency.

[0043] In this embodiment, the filter element can be placed inside the air passage of the housing 8 of the liquid removal device and welded to the circumferential inner wall of the air passage, so that the gas-liquid mixture flowing through the air passage must pass through the filter element before it can flow out of the liquid removal device.

[0044] Example 2

[0045] like Figure 2 - Figure 5 As shown, the filter element also includes a top plate 4 and a first side plate 5. The top plate 4 is provided with through holes 7 penetrating its upper and lower surfaces. The through holes 7 are connected to the outlet, and the gas flowing out of the outlet flows upward through the through holes 7.

[0046] The circumferential edge of the top plate 4 is used to connect with the inner wall of the housing 8 of the liquid removal device, thereby dividing the interior of the housing 8 into upper and lower parts. The air inlet 9 is located in the lower part and the air outlet 10 is located in the upper part. Under the obstruction of the top plate 4, the gas entering through the air inlet 9 flows into the air outlet 10 only through the channel 2.

[0047] There are two first side plates 5. One of the first side plates 5 is connected to the left edge of each of the multi-bent fins 3 to close the gap formed by two adjacent multi-bent fins 3 from the left. The other first side plate 5 is connected to the right edge of each of the multi-bent fins 3 to close the gap formed by two adjacent multi-bent fins 3 from the right, so as to prevent gas from not completely passing through the channel 2.

[0048] The first side plate 5 and the multi-bend fin 3 can be welded together.

[0049] The filter element also includes two second side plates 6. One second side plate 6 is located on the front side of the flow guiding structure 1 and connected to the bottom surface of the top plate 4. The other second side plate 6 is located on the rear side of the flow guiding structure 1 and connected to the bottom surface of the top plate 4. The second side plate 6 is welded to the two multi-bend fins 3 on the frontmost and rearmost sides, and also welded to the top plate 4.

[0050] The left and right sides of the second side plate 6 are respectively connected to the two first side plates 5, so that the first side plates 5 and the second side plates 6 form a rectangular cylindrical structure. The through hole 7 is located inside the area enclosed by the cylindrical structure. The cylindrical structure is welded together with the top plate 4 to improve the sealing performance. The baffle, the first side plate 5 and the second side plate 6 are used to ensure that all gas can pass through the fins for liquid removal.

[0051] like Figure 3 As shown, the top surface of the top plate 4 is an inclined plane with a slope. From top to bottom, the cross-sectional area of ​​the top surface of the top plate 4 gradually decreases, and the through hole 7 is located at the lowest position of the top plate 4. Droplets falling on the upper surface of the top plate 4 flow along the inclined plane into the through hole 7, and then into the channel 2.

[0052] Example 3

[0053] The liquid removal device provided by this utility model includes the filter element in Embodiment 1 above. The device also includes a housing 8, on which an air inlet 9 and an air outlet 10 are provided. A flow guiding structure 1 is disposed between the air inlet 9 and the air outlet 10, and the circumferential outer wall of the flow guiding structure 1 is sealed to the circumferential inner wall of the housing 8. This ensures that the gas entering through the air inlet 9 flows only through the channel 2 to the air outlet 10. All gas-liquid mixtures must be filtered through the channel 2 before flowing out from the air outlet, thus preventing some gas-liquid mixtures from flowing out unfiltered. No baffles are used; the fin edges are directly aligned with the inner side of the cylindrical housing 8 and then welded to the housing 8. The fluid flows based on the system pressure difference, requiring no additional power. The low flow rate facilitates thorough gas-liquid separation and avoids excessive noise.

[0054] Example 4

[0055] like Figure 6 As shown, the liquid removal device provided by this utility model includes the filter element in Embodiment 2 above. The liquid removal device also includes a housing 8, on which an air inlet 9 and an air outlet 10 are provided. The flow guiding structure 1 is disposed between the air inlet 9 and the air outlet 10. Furthermore, the circumferential outer wall of the top plate 4 is sealed to the circumferential inner wall of the housing 8, so that the gas entering through the air inlet 9 flows into the air outlet 10 only after passing through the channel 2. The fluid flows by relying on the system pressure difference, without the need for additional power. The low flow rate is conducive to sufficient gas-liquid separation and will not generate excessive noise.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A filter element, characterized in that, include: The flow guiding structure (1) includes a first end face and a second end face facing each other. Along the direction from the first end face to the second end face, the flow guiding structure (1) is provided with a bent and extended channel (2). One end of the channel (2) is connected to the first end face and forms an inlet, and the other end is connected to the second end face and forms an outlet.

2. The filter element according to claim 1, characterized in that, The number of channels (2) is at least two.

3. The filter element according to claim 2, characterized in that, The flow guiding structure (1) includes multiple multi-bend fins (3), each of which is arranged in parallel and spaced apart, and the gap between two adjacent multi-bend fins (3) forms the channel (2).

4. The filter element according to claim 2, characterized in that, The front-to-back distance between two adjacent multi-bent fins (3) is less than the length of the multi-bent fin (3) in the front-to-back direction.

5. The filter element according to claim 2, characterized in that, The range of the front-to-back distance between two adjacent multi-bend fins (3) is 10mm-20mm.

6. The filter element according to any one of claims 3-5, characterized in that, The filter element also includes a top plate (4) and a first side plate (5). The top plate (4) is provided with a through hole (7) that penetrates its upper and lower surfaces. The through hole (7) is connected to the outlet. There are two first side plates (5), one of which is connected to the left edge of each of the multi-bent fins (3) to close the gap formed by two adjacent multi-bent fins (3) from the left, and the other is connected to the right edge of each of the multi-bent fins (3) to close the gap formed by two adjacent multi-bent fins (3) from the right.

7. The filter element according to claim 6, characterized in that, The filter element also includes a second side plate (6), and there are two second side plates (6). One of the second side plates (6) is located on the front side of the flow guiding structure (1) and is connected to the bottom surface of the top plate (4). The other second side plate (6) is located on the rear side of the flow guiding structure (1) and is connected to the bottom surface of the top plate (4). The left and right sides of the second side plate (6) are respectively connected to the two first side plates (5) so that the first side plates (5) and the second side plates (6) form a cylindrical structure, and the through hole (7) is located inside the area enclosed by the cylindrical structure.

8. The filter element according to claim 6, characterized in that, The top surface of the top plate (4) is an inclined surface. From top to bottom, the cross-sectional area of ​​the top surface of the top plate (4) gradually decreases. The through hole (7) is located at the lowest position of the top plate (4).

9. A liquid removal device, characterized in that, The filter element according to any one of claims 1-5, the liquid removal device further includes a housing (8), the housing (8) is provided with an air inlet (9) and an air outlet (10), the flow guiding structure (1) is disposed between the air inlet (9) and the air outlet (10), and the circumferential outer wall of the flow guiding structure (1) is sealed to the circumferential inner wall of the housing (8) so that the gas entering through the air inlet (9) flows into the air outlet (10) only through the channel (2).

10. A liquid removal device, characterized in that, The filter element according to any one of claims 6-8 is included, and the liquid removal device further includes a housing (8), on which an air inlet (9) and an air outlet (10) are provided. The flow guiding structure (1) is disposed between the air inlet (9) and the air outlet (10). Furthermore, the circumferential outer wall of the top plate (4) is sealed to the circumferential inner wall of the housing (8) so that the gas entering through the air inlet (9) flows into the air outlet (10) only through the channel (2).

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