Filtering piece and belt dryer

Abstract

The utility model provides a filtering piece and a belt dryer. The filter part is installed at an exhaust port of the belt dryer and used for filtering dust carried in exhausted gas. The filtering piece comprises a frame body, a filtering assembly and an adjusting assembly. And a filtering opening is formed in the frame body. The filtering assembly is installed in the filtering opening and is a rigid plate, and a plurality of filtering holes are evenly formed in the rigid plate. The adjusting assembly is mounted on the filtering assembly and comprises a filtering plate, and the filtering plate is arranged on the filtering assembly and can partially shield the filtering holes. According to the filtering piece provided by the utility model, the filtering assembly is arranged to be the rigid plate, so that the filtering assembly cannot deform due to factors such as exhaust and wind blowing during filtering operation, and the filtering effect is ensured. And the size of the filter holes can be adaptively adjusted according to the size of the dried materials, and the ventilation quantity of the exhaust port is guaranteed under the condition that the materials cannot leak out of the exhaust port, so that the drying effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of dryers, and more specifically, to a filter element and a belt dryer. Background Art

[0002] As a continuous drying device, a belt dryer can enable hot air to fully contact the materials to be dried through a conveyor belt, so that the moisture in the materials gradually evaporates, thereby achieving the purpose of drying. During the use of the belt dryer, since the belt dryer is mainly applicable to the drying of sheet-shaped, strip-shaped, and granular materials with good air permeability, dust is usually generated during the drying process, especially for materials that are prone to generating dust themselves, and a large amount of dust is more likely to be generated during the drying process. In addition, during the drying process, the moisture or solvent on the surface of the materials will be evaporated and carried away, and this process may be accompanied by the separation and flying of some fine particles.

[0003] In the related art, in order to ensure the normal operation of the belt dryer and avoid poor heat dissipation, a flexible wire mesh is usually arranged at the exhaust port to filter the dust generated during the drying process and prevent the dust from affecting the belt dryer. However, the flexible wire mesh will be frequently blocked and needs to be cleaned frequently. Not only is the process of disassembling, installing, and cleaning the wire mesh cumbersome, but it also affects the normal progress of the drying operation. The size of the mesh holes of the flexible wire mesh cannot be adjusted either, and the usage scenario is single, and the usage effect is poor. Summary of the Utility Model

[0004] In order to avoid the defects existing in the related art, the utility model provides a filter element and a belt dryer.

[0005] The embodiments of the utility model are implemented as follows:

[0006] A filter element is installed at the exhaust port of a belt dryer and is used to filter the dust carried in the exhausted gas. The filter element includes a frame body, a filter assembly, and an adjustment assembly. A filter opening is formed on the frame body. The filter assembly is installed in the filter opening. The filter assembly is set as a rigid plate, and a plurality of filter holes are evenly distributed on the rigid plate. The adjustment assembly is installed on the filter assembly. The adjustment assembly includes a filter plate, the filter plate is arranged on the filter assembly, and the filter plate can partially block the filter holes.

[0007] Further, the frame body includes an end face and an extension plate, and the extension plate is vertically arranged at the edge of the end face. The filter opening is formed at the center of the end face, and the frame body is installed on the exhaust passage through the extension plate.

[0008] Further, the filter assembly is arranged on the side of the end face facing the exhaust passage. When the frame body is installed on the exhaust passage, the end face abuts against the exhaust passage.

[0009] Further, the filter plate is disposed between the filtering component and the exhaust passage. The filter plate includes a frame body and a shielding portion, and the shielding portion is disposed within the frame body to shield the filtering holes.

[0010] Further, the wall thickness of the exhaust passage is L1, and the distance between the frame body and the extension plate is L2, satisfying: L1 ≥ L2.

[0011] Further, the shielding portion includes shielding rods, and a plurality of the shielding rods are arranged in parallel within the frame body.

[0012] Further, at least two filter plates are disposed on the filtering component, and the shielding rods of two adjacent filter plates are perpendicularly arranged.

[0013] Further, the filtering component is arranged as a square punching plate, and the filtering holes are arranged as square holes or circular holes.

[0014] Further, the width of the shielding rod is L3, the side length or diameter of the filtering hole is L4, and the distance between adjacent shielding rods is L5, satisfying L5 > L4 > L3.

[0015] The present utility model further provides a belt dryer, including the filtering member described in any one of the above embodiments, and the filtering member is disposed at the exhaust port of the belt dryer.

[0016] The beneficial effects of the embodiments of the present utility model are as follows:

[0017] For the filtering member provided by the present utility model, during use, the filtering component is installed on the frame body, the adjusting component is installed on the filtering component, and then the frame body is installed at the exhaust port of the belt dryer, so as to filter the gas discharged from the exhaust port. When the material to be dried has large particles and cannot pass through the filtering holes, the adjusting component does not need to shield the filtering holes, ensuring the ventilation volume of the exhaust port, thereby achieving a good drying effect; when the material to be dried is small, the adjusting component adaptively shields the filtering holes, preventing the material from leaking out of the filtering component and better filtering dust.

[0018] For the filtering member provided by the present utility model, the filtering component is arranged as a rigid plate. During the filtering operation, the filtering component will not deform due to factors such as exhaust and wind blowing, ensuring the filtering effect. And according to the size of the dried material, the size of the filtering holes can be adaptively adjusted. Without the material leaking out of the exhaust port, the ventilation volume of the exhaust port is ensured, thereby ensuring the drying effect. Description of the Drawings

[0019] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0020] Figure 1 Structural schematic diagram of a perspective of the filter element according to an embodiment of the present utility model;

[0021] Figure 2 Structural schematic diagram of another perspective of the filter element according to an embodiment of the present utility model;

[0022] Figure 3 Structural schematic diagram of a perspective of the filter plate according to an embodiment of the present utility model;

[0023] Figure 4 Structural schematic diagram of yet another perspective of the filter element according to an embodiment of the present utility model.

[0024] Icon:

[0025] 100 - Frame body; 110 - End face; 120 - Extension plate; 200 - Filter assembly; 210 - Filter holes; 300 - Adjustment assembly; 310 - Filter plate; 311 - Frame body; 312 - Blocking rod. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0030] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0031] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] This application provides a filter element to solve the problems in the related art that the filter element at the exhaust port is easily blocked and not easy to clean, which affects the drying efficiency, and the filter holes cannot be adjusted adaptively according to the types of dried materials.

[0033] Please refer to Figures 1 to 3 , this application provides a filter element installed at the exhaust port of a belt dryer, and this filter element is used to filter the dust carried in the discharged gas. The filter element includes a frame body 100, a filter assembly 200, and an adjustment assembly 300. A filter port is provided on the frame body 100. The filter assembly 200 is installed in the filter port. The filter assembly 200 is set as a rigid plate, and a plurality of filter holes 210 are evenly distributed on the rigid plate. The adjustment assembly 300 is installed on the filter assembly 200. The adjustment assembly 300 includes a filter plate 310. The filter plate 310 is arranged on the filter assembly 200, and the filter plate 310 can partially block the filter holes 210.

[0034] In the filter element of this embodiment, during use, the filter assembly 200 is installed on the frame body 100, the adjustment assembly 300 is installed on the filter assembly 200, and then the frame body 100 is installed at the exhaust port of the belt dryer, and it can be used normally to filter the gas discharged from the exhaust port.

[0035] In this embodiment, the filter assembly 200 is set as a rigid plate. During the working process, the filter assembly 200 will not be deformed by the airflow at the exhaust port, making the whole of this embodiment more stable. When there is more moisture entrained in the material, the dust is not easily adhered to the filter assembly 200, improving the blockage situation of this embodiment. Even if blockage occurs, the filter holes 210 on the filter assembly 200 will not be completely blocked, improving the reliability of this embodiment. By reducing the blockage of the filter holes 210, the maintenance frequency of this embodiment can also be reduced, the number of times of cleaning the filter holes 210 is reduced, thereby reducing the maintenance cost. Since the filter element usually needs to stop the belt dryer during cleaning, reducing the number of cleaning times means reducing the number of stops of the belt dryer, thereby indirectly improving the drying efficiency of the belt dryer.

[0036] An adjustment assembly 300 is provided on the filter assembly 200. By using the filter plate 310 in the adjustment assembly 300 to block the filter holes 210, the effective opening area of the filter holes 210 can be controlled, so that this embodiment can adapt to different sizes of dried materials and meet different filtering requirements; adapt to gases with different dust concentrations and improve the filtering efficiency of this embodiment.

[0037] In some embodiments, by way of example, such as Figure 1 、 Figure 2 As shown, the frame body 100 includes an end face 110 and an extension plate 120. The extension plate 120 is vertically arranged at the edge of the end face 110. The filter port is opened at the center of the end face 110. The frame body 100 is installed on the exhaust passage through the extension plate 120. By means of the extension plate 120 vertically arranged with the end face 110, the contact area between the filter element and the exhaust passage can be increased, improving the installation stability of this embodiment. The design of the extension plate 120 can also enable the filter element to be directly installed on the exhaust passage, simplifying the installation process of this embodiment. The extension plate 120 is arranged on the side wall of the exhaust passage, which can ensure a good connection between the filter element and the exhaust passage, reduce the chance of gas bypassing the filter element, and improve the filtering efficiency. The filter port is opened at the center of the end face 110, that is, the filter assembly 200 is arranged at the center of the end face 110, which can improve the air flow distribution, make the gas pass through the filter holes 210 evenly, and improve the filtering effect of this embodiment.

[0038] In some embodiments, by way of example, such as Figure 1As shown, threaded holes are provided on the end face 110. Correspondingly, threaded holes are also provided at the corresponding positions of the exhaust passage. In this way, during the assembly of this embodiment, the end face 110 can be directly fixed to the exhaust passage by common connecting parts such as screws or bolts. The fixing process is simple and convenient, making this embodiment easy to install and use.

[0039] A seal is also provided on the side of the extension plate 120 facing the exhaust pipe. After the frame body 100 is installed on the exhaust pipe, the end face 110 is connected to the end of the exhaust pipe, and the seal is arranged between the extension plate 120 and the side wall of the exhaust pipe to seal the installation gap between the frame body 100 and the exhaust pipe, so as to ensure that when this embodiment is working, gas will not bypass the filter assembly 200 and directly flow out from the connection between this embodiment and the exhaust pipe.

[0040] In some embodiments, by way of example, as Figure 1 、 Figure 2 shown, the filter assembly 200 is arranged on the side of the end face 110 facing the exhaust passage. When the frame body 100 is installed on the exhaust passage, the end face 110 abuts against the exhaust passage. By directly abutting the end face 110 against the exhaust passage, good sealing performance between the filter assembly 200 and the exhaust passage can be ensured, reducing gas leakage. At the same time, the filter assembly 200 can also be clamped and fixed by the cooperation of the frame body 100 and the exhaust passage, restricting the position of the filter assembly 200, avoiding displacement of the filter assembly 200 during the working process, and also reducing displacement or loosening caused by the vibration of the belt dryer or other external factors, ensuring the reliability of this embodiment.

[0041] It can be understood that by setting this embodiment in this way, with the end face 110 directly abutting against the exhaust passage, the installation process of this embodiment can be simplified, facilitating quick installation and disassembly. That is, when this embodiment needs to be cleaned or maintained after working for a period of time, it can be disassembled and assembled conveniently and quickly, reducing the downtime of the belt dryer and improving the drying efficiency.

[0042] In some embodiments, by way of example, as Figure 1 、 Figure 2 shown, the filter plate 310 is arranged between the filter assembly 200 and the exhaust passage. The filter plate 310 includes a frame body 311 and a shielding portion, and the shielding portion is arranged within the frame body 311 to shield the filter holes 210. Through the shielding portion, the filter holes 210 can be adaptively shielded according to the actual working conditions to adjust the effective filtering area of the filter holes 210, so that this embodiment can filter materials of different sizes, improving the practicability of this embodiment.

[0043] Specifically, when filtering materials with larger particles, there is no need to block the filter holes 210, or a smaller area is blocked to prevent the materials from leaking out of the filter holes 210, while ensuring the ventilation effect of the filter holes 210 and the drying effect of the belt dryer. When filtering materials with smaller particles, the filter holes 210 are adaptively blocked by the blocking portion to also ensure that the materials do not flow out of the filter holes 210.

[0044] The filter plate 310 includes a frame 311 and a shielding portion, and the filter plate 310 can be easily adjusted. When the filter hole 210 needs to be shielded by the shielding portion, the filter plate 310 can be adjusted as a whole by simply moving the frame 311, making the adjustment process simple and convenient.

[0045] In some embodiments, for example, Figure 1 , Figure 2 As shown, the wall thickness of the exhaust channel is L1, and the distance between the frame 311 and the extension plate 120 is L2, which satisfies: L1 ≥ L2. In this way, after the assembly of this embodiment is completed, the end face 110 of the exhaust channel can abut against the filter plate 310, and the filter assembly 200 and the filter plate 310 are fixed through the frame 100 and the exhaust channel, further ensuring that the installation of this embodiment is reliable, and the filter plate 310 will not be displaced during the working process, so that the working process of this embodiment is stable.

[0046] In some embodiments, for example, Figure 3 , Figure 4 As shown, the shielding portion includes a shielding rod 312, and a plurality of shielding rods 312 are arranged in parallel in the frame 311. When in use, when the shielding rod 312 overlaps with the filter assembly 200, that is, the shielding rod 312 does not block the filter hole 210 at all, at this time, the area of ​​the filter hole 210 is the largest. When it is necessary to adjust the area of ​​the filter hole 210, the position of the filter plate 310 is moved so that the shielding rod 312 and the filter assembly 200 are staggered, that is, the shielding rod 312 overlaps with the filter hole 210, and the overlapping part is the shielding part. The larger the overlapping part, the more the filter hole 210 is blocked, and accordingly, the smaller the filter hole 210 is. In this way, the size of the filter hole 210 can be controlled by adjusting the position of the adjustment assembly 300, so that the present embodiment can be applied to drying materials of different sizes.

[0047] In some embodiments, for example, Figure 2As shown, at least two filter plates 310 are provided on the filtering assembly 200, and the blocking rods 312 of two adjacent filter plates 310 are vertically arranged. Arranging a plurality of pull plates on the filtering assembly 200 can make the adjustment of the filter holes 210 by the filter plates 310 more flexible. Exemplarily, when two filter plates 310 are provided and the blocking rods 312 on the two filter plates 310 are vertically arranged, the staggered baffle plates themselves can form a grid-shaped filter screen, which cooperates with the filtering assembly 200 to improve the filtering capacity of this embodiment and prevent materials from leaking out of this embodiment.

[0048] The number of filter plates 310 can also be set arbitrarily, as long as the blocking rods 312 of two adjacent filter plates 310 are vertically arranged. Arranging multiple layers of filter plates 310 can effectively and reliably ensure that materials do not leak out of the filter plates 310 when drying the materials.

[0049] In some embodiments, exemplarily, as Figures 1 to 3 shown, the filtering assembly 200 is set as a square perforated plate, and the filter holes 210 are set as square holes or circular holes. In this way, in cooperation with the staggered baffle plates, the square holes can be decomposed into smaller square grid holes, or the circular holes can be decomposed into smaller fan-shaped holes, so as to control the size of the filter holes 210. In addition, during actual use, the baffle plate can gradually move along the edge of the filter hole 210, that is, gradually block the filter hole 210. That is to say, the filter plate 310 can perform stepless adjustment on the size of the filter hole 210, making this embodiment more practical.

[0050] Setting the filtering assembly 200 as a perforated plate ensures the stability and reliability of the filtering assembly 200 and also makes the filtering assembly 200 easy to clean. In addition, setting the filter holes 210 as regular shapes such as square holes or circular holes, in cooperation with the perforated plate, can also reduce the processing difficulty of this embodiment and make this embodiment easy to produce and process.

[0051] It can be understood that the filter holes 210 can also be set in any shape according to the actual situation, as long as it can ensure that materials do not pass through the filter holes 210.

[0052] In some embodiments, exemplarily, as Figure 1 、 Figure 2 、 Figure 4As shown, the width of the shielding rod 312 is L3, the side length or diameter of the filtering hole 210 is L4, and the distance between adjacent shielding rods 312 is L5, satisfying L5≥L4>L3. When the distance between adjacent shielding rods 312 is greater than or equal to the side length or diameter of the filtering hole 210, it is ensured that when the adjusting assembly 300 is not actuated, it can completely coincide with the filtering assembly 200 without blocking the filtering hole 210, ensuring that the maximum ventilation volume of the filtering hole 210 will not be affected. The side length or diameter of the filtering hole 210 is greater than the width of the shielding rod 312, so that when the shielding rod 312 completely moves to coincide with the filtering hole 210, the filtering hole 210 will not be completely blocked, avoiding the filtering hole 210 from being unable to ventilate and ensuring the normal operation of this embodiment.

[0053] The present utility model further provides a belt dryer, including the filtering member in any one of the above embodiments, and the filtering member is arranged at the exhaust port of the belt dryer.

[0054] The belt dryer of this embodiment includes the filtering member in any one of the above embodiments, and thus has all the beneficial effects of the above filtering member, which will not be elaborated herein.

[0055] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A filter element installed at the exhaust port of a belt dryer to filter dust carried in the exhaust gas; characterized in that: The filter element comprises: A frame (100), wherein a filter port is provided on the frame (100); A filter assembly (200), the filter assembly (200) being installed in the filter port, the filter assembly being configured as a rigid plate, and a plurality of filter holes (210) being evenly distributed on the rigid plate; An adjusting component (300), wherein the adjusting component (300) is mounted on the filtering component (200), wherein the adjusting component (300) comprises a filter plate (310), wherein the filter plate (310) is arranged on the filtering component (200), and wherein the filter plate (310) is capable of partially covering the filtering hole (210).

2. The filter element according to claim 1, characterized in that The frame (100) comprises an end surface (110) and an extension plate (120), wherein the extension plate (120) is vertically arranged at the edge of the end surface (110); The filter port is opened at the center of the end surface (110), and the frame (100) is installed on the exhaust passage through the extension plate (120).

3. The filter element according to claim 2, characterized in that: The filter assembly (200) is arranged on a side of the end surface (110) facing the exhaust passage; when the frame (100) is installed on the exhaust passage, the end surface (110) abuts against the exhaust passage.

4. The filter element according to claim 3, characterized in that: The filter plate (310) is arranged between the filter assembly (200) and the exhaust passage; The filter plate (310) comprises a frame (311) and a shielding portion, wherein the shielding portion is arranged in the frame (311) to shield the filter hole (210).

5. The filter element according to claim 4, characterized in that The wall thickness of the exhaust passage is L1, and the distance between the frame (311) and the extension plate (120) is L2, satisfying: L1≥L2.

6. The filter element according to claim 4, characterized in that: The shielding portion comprises a shielding rod (312), and a plurality of the shielding rods (312) are arranged in parallel in the frame (311).

7. The filter element according to claim 6, characterized in that At least two filter plates (310) are arranged on the filter assembly (200), and the shielding rods (312) of two adjacent filter plates (310) are arranged vertically.

8. The filter element according to claim 6, characterized in that: The filter assembly (200) is configured as a square punching plate, and the filter holes (210) are configured as square holes or circular holes.

9. The filter element according to claim 7, characterized in that: The diameter of the shielding rod (312) is L3, the side length or diameter of the filtering hole (210) is L4, and the distance between adjacent shielding rods (312) is L5, satisfying L5>L4>L3.

10. A belt dryer, characterized in that: The filter element comprises the filter element according to any one of claims 1 to 9, wherein the filter element is arranged at the exhaust port of the belt dryer.

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