Filter screen type dust removal mechanism with self-cleaning function

Abstract

The utility model discloses a filter screen type dust removal mechanism with a self-cleaning function, and relates to the technical field of structures of filter screen type dust removal mechanisms, a filter screen (8) is welded on the top surface of a mounting frame (5), and the filter screen (8) covers a central cavity (6) of the mounting frame (5); a blowing mechanism (9) for blowing meshes of the filter screen (8) is arranged on the right side wall of the shell (1); a shaking mechanism (14) used for driving the filter screen (8) to shake up and down is arranged on the left side wall of the shell (1), the shaking mechanism (14) comprises a rotating shaft (15) rotationally installed between the left side wall and the right side wall of the shell (1) and a driving motor (16) fixedly arranged on the left side wall of the shell (1), the rotating shaft (15) is located under the installation frame (5), and the left end of the rotating shaft (15) is connected with an output shaft of the driving motor (16). And a plurality of cams (17) are fixedly arranged on the rotating shaft (15). The filter screen cleaning device has the advantages that the working intensity of workers is relieved, and the filter screen cleaning efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of the structure of filter-type dust removal mechanisms, and in particular to a filter-type dust removal mechanism with a self-cleaning function. Background Technology

[0002] Waste incinerators are used to burn municipal solid waste. During the incineration process, hot flue gas is generated. In order to recover and utilize the heat from the flue gas, workers usually connect a screen-type dust removal mechanism and a heat exchanger sequentially at the end of the flue gas pipe of the waste incinerator. The screen-type dust removal mechanism is used to filter out dust from the flue gas, while the heat exchanger is used to recover the heat from the flue gas, thereby achieving the purpose of heat recovery.

[0003] The structure of a certain filter-type dust removal mechanism is as follows: Figures 1-2 As shown, the filter-type dust removal mechanism includes a housing 1, a top cover 2 detachably connected to the top surface of the housing 1, a smoke outlet pipe 3 fixed to the top cover 2, and a smoke inlet pipe 4 fixed to the outer side wall of the housing 1. A mounting frame 5 is fixed inside the housing 1, and a central cavity 6 is opened inside the mounting frame 5. A filter screen 8 is fixedly connected to the top surface of the mounting frame 5 by screws 7, and the filter screen 8 covers the central cavity 6 of the mounting frame 5.

[0004] The method by which this filter-type dust removal mechanism removes dust from flue gas is as follows:

[0005] Workers connect the inlet pipe 4 on the outer shell 1 to the exhaust pipe of the waste incinerator. When the waste incinerator is burning municipal solid waste, the flue gas generated passes through the inlet pipe 4, the inner cavity of the outer shell 1, the central cavity 6 of the mounting frame 5, and the mesh of the filter screen 8 in sequence, and is finally discharged into the heat exchanger from the top port of the outlet pipe 3. When the flue gas passes through the filter screen 8, the filter screen 8 filters out the dust in the flue gas.

[0006] After a period of use, a layer of dust will accumulate on the bottom surface of filter 8, clogging the mesh openings. Dust will also accumulate inside the mesh openings. To ensure that flue gas can pass smoothly through filter 8, workers need to clean it regularly. The specific cleaning steps are as follows: First, remove the top cover 2 located on the top of the outer casing 1. Then, remove the screws 7 between filter 8 and the mounting frame 5. Next, remove filter 8 from the outer casing 1. After removal, clean the dust layer adhering to the bottom surface of filter 8 and the dust clogging the mesh openings. After cleaning, reinstall filter 8 inside the outer casing 1 to ensure its normal operation.

[0007] However, although this type of filter-type dust removal mechanism can filter out dust from flue gas, it still has the following technical defects:

[0008] Workers must first remove the top cover 2, and then remove the multiple screws 7 between the filter screen 8 and the mounting frame 5 before they can remove the filter screen 8 from the outer casing 1. Only then can the filter screen 8 be cleaned from the outside. This not only increases the workload for workers but also adds to the cleaning process, thus reducing the cleaning efficiency of the filter screen 8. Furthermore, after cleaning the filter screen 8, workers need to reinstall the filter screen 8 and the top cover 2, which undoubtedly further increases the workload for workers.

[0009] Therefore, there is an urgent need for a filter-type dust removal mechanism that can reduce the workload of workers and improve the efficiency of filter cleaning. Utility Model Content

[0010] The purpose of this invention is to overcome the shortcomings of the prior art and provide a filter-type dust removal mechanism with self-cleaning function that reduces the workload of workers and improves the efficiency of filter cleaning.

[0011] The purpose of this utility model is achieved through the following technical solution: a filter-type dust removal mechanism with self-cleaning function, comprising a shell, a top cover detachably connected to the top surface of the shell, a smoke outlet pipe fixed to the top cover, a smoke inlet pipe fixed to the outer side wall of the shell, and an installation frame fixed inside the shell, wherein a central cavity is opened in the installation frame. The feature is that a filter screen is welded to the top surface of the installation frame, the filter screen covers the central cavity of the installation frame, and a blowing mechanism for blowing the mesh of the filter screen is provided on the right side wall of the shell.

[0012] The purging mechanism includes a feed cylinder fixed to the right side wall of the housing. The piston rod of the feed cylinder extends to the left through the right side wall of the housing, and a longitudinally arranged air outlet plate is fixed on the extended end. The air outlet plate is located directly above the right end of the filter screen. Multiple air outlet holes communicating with the inner cavity of the air outlet plate are opened on the bottom surface of the air outlet plate. A pipe is welded to the right end face of the air outlet plate. The left end of the pipe is connected to the inner cavity of the air outlet plate, and the right end of the pipe extends to the right through the right side wall of the housing and is connected to the working port of the air compressor.

[0013] The left side wall of the housing is provided with a shaking mechanism for driving the filter screen to shake up and down. The shaking mechanism includes a rotating shaft rotatably mounted between the left and right side walls of the housing and a drive motor fixed on the left side wall of the housing. The rotating shaft is located directly below the mounting frame. The left end of the rotating shaft is connected to the output shaft of the drive motor. Multiple cams are also fixed on the rotating shaft, and each cam extends into the central cavity of the mounting frame.

[0014] Multiple support legs, which are fixed to the ground, are fixed on the bottom surface of the outer shell.

[0015] A sealing cap is detachably connected to the material discharge hole of the outer casing.

[0016] The air outlet holes are evenly distributed on the air outlet plate along its length.

[0017] A guide hole corresponding to the pipe is provided on the right side wall of the outer casing, and the pipe slides in conjunction with the guide hole.

[0018] Two cams are fixed on the rotating shaft, and the two cams are located on the left and right sides of the mounting frame, respectively.

[0019] This utility model has the following advantages: reducing the workload of workers and improving the efficiency of filter cleaning. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a filter-type dust removal mechanism.

[0021] Figure 2 for Figure 1 AA section view;

[0022] Figure 3 This is a schematic diagram of the structure of this utility model;

[0023] Figure 4 for Figure 3 BB section view;

[0024] Figure 5 for Figure 4 Enlarged view of part C;

[0025] Figure 6 This is an isometric view of the air outlet plate;

[0026] Figure 7 for Figure 6 A cross-sectional schematic diagram;

[0027] Figure 8 An isometric view of the mounting frame;

[0028] Figure 9 for Figure 8 Main section diagram;

[0029] Figure 10 This is a connection diagram of the vibration mechanism;

[0030] Figure 11 This is a schematic diagram showing the air outlet plate moving to directly above the left end of the filter screen.

[0031] In the picture:

[0032] 1-Outer shell, 2-Top cover, 3-Exhaust pipe, 4-Inlet pipe, 5-Mounting frame, 6-Central cavity, 7-Screw, 8-Filter screen;

[0033] 9-Purge mechanism, 10-Feed cylinder, 11-Outlet disc, 12-Outlet hole, 13-Pipe, 14-Vibration mechanism, 15-Rotating shaft, 16-Drive motor, 17-Cam, 18-Sealing cover. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description:

[0035] like Figures 3-10 As shown, a filter-type dust removal mechanism with self-cleaning function includes a housing 1, a top cover 2 detachably connected to the top surface of the housing 1, a smoke outlet pipe 3 fixed to the top cover 2, and a smoke inlet pipe 4 fixed to the outer side wall of the housing 1. A mounting frame 5 is fixed inside the housing 1, and a central cavity 6 is opened in the mounting frame 5. The feature is that a filter screen 8 is welded to the top surface of the mounting frame 5, and the filter screen 8 covers the central cavity 6 of the mounting frame 5. A blowing mechanism 9 for blowing the mesh of the filter screen 8 is provided on the right side wall of the housing 1.

[0036] The purging mechanism 9 includes a feed cylinder 10 fixed on the right side wall of the outer casing 1. The piston rod of the feed cylinder 10 extends to the left through the right side wall of the outer casing 1, and a longitudinally arranged air outlet plate 11 is fixed on the extended end. The air outlet plate 11 is located directly above the right end of the filter screen 8. A plurality of air outlet holes 12 communicating with the inner cavity of the air outlet plate 11 are opened on the bottom surface of the air outlet plate 11. The air outlet holes 12 are evenly distributed on the air outlet plate 11 along the length direction of the air outlet plate 11. A pipe 13 is welded to the right end face of the air outlet plate 11. The left end of the pipe 13 is connected to the inner cavity of the air outlet plate 11, and the right end of the pipe 13 extends to the right through the right side wall of the outer casing 1 and is connected to the working port of the air compressor.

[0037] A shaking mechanism 14 for driving the filter screen 8 to vibrate up and down is provided on the left side wall of the outer casing 1. The shaking mechanism 14 includes a rotating shaft 15 rotatably mounted between the left and right side walls of the outer casing 1 and a drive motor 16 fixed on the left side wall of the outer casing 1. The rotating shaft 15 is located directly below the mounting frame 5, and the left end of the rotating shaft 15 is connected to the output shaft of the drive motor 16. A plurality of cams 17 are also fixed on the rotating shaft 15, and each cam 17 extends into the central cavity of the mounting frame 5. Two cams 17 are fixed on the rotating shaft 15, and the two cams 17 are located on the left and right sides of the mounting frame 5, respectively.

[0038] Multiple support legs, which are fixed to the ground, are fixed on the bottom surface of the outer casing 1. A sealing cap 18 is detachably connected to the material discharge hole of the outer casing 1. A guide hole corresponding to the pipe 13 is opened on the right side wall of the outer casing 1, and the pipe 13 slides in conjunction with the guide hole.

[0039] The method by which this filter-type dust removal mechanism removes dust from flue gas is as follows:

[0040] Workers connect the inlet pipe 4 on the outer shell 1 to the exhaust pipe of the waste incinerator. When the waste incinerator is burning domestic waste, the generated flue gas passes through the inlet pipe 4, the inner cavity of the outer shell 1, the central cavity 6 of the mounting frame 5, and the mesh of the filter screen 8 in sequence, and is finally discharged into the heat exchanger from the top port of the exhaust pipe 3. When the flue gas passes through the filter screen 8, the filter screen 8 filters out the dust in the flue gas.

[0041] After a period of use, a layer of dust accumulates on the bottom surface of filter screen 8, clogging the mesh openings. Dust also accumulates inside the mesh, hindering the smooth flow of flue gas. Therefore, the specific steps for cleaning the filter screen are as follows:

[0042] S1. The worker controls the start of the drive motor 16 of the shaking mechanism 14. The drive motor 16 drives the rotating shaft 15 to rotate, and the rotating shaft 15 drives the two cams 17 to rotate simultaneously. The protrusions of the two rotating cams 17 repeatedly strike the left and right ends of the filter screen 8, thereby causing the filter screen 8 to shake repeatedly. During the shaking process, the dust layer attached to the bottom surface of the filter screen 8 falls down, and then the falling dust layer passes through the central cavity 6 of the mounting frame 5 and falls to the bottom of the outer shell 1. After the drive motor 16 has been working for a period of time, the dust layer attached to the bottom surface of the filter screen 8 can be completely cleaned away.

[0043] S2. The worker starts the air compressor, which introduces pressurized gas into pipe 13. The pressurized gas passes sequentially through pipe 13 and the inner cavity of the air outlet plate 11, finally spraying downwards from the air outlet hole 12 of the air outlet plate 11. Then, the worker controls the piston rod of the feed cylinder 10 to extend to the left, causing the air outlet plate 11 to move to the left. During this movement, the pressurized gas sprayed downwards from the air outlet hole 12 blows the dust blocking the mesh downwards. The blown-off dust passes through the central cavity of the mounting frame 5 and falls to the bottom of the outer casing 1. When the air outlet plate 11 moves to directly above the left end of the filter screen 8, as... Figure 11 As shown, this can blow away all the dust clogging the mesh of filter screen 8, thereby cleaning the dust inside the mesh of filter screen 8 and ultimately cleaning the entire filter screen 8, thus ensuring that filter screen 8 can work normally and ensuring that the flue gas entering the outer casing 1 can pass through filter screen 8 smoothly.

[0044] As can be seen from steps S1-S2, this filter-type dust removal mechanism only needs to first use the shaking mechanism 14 to make the filter screen 8 reciprocate continuously to quickly remove the dust layer attached to the bottom surface of the filter screen 8; then, through the linkage of the air outlet plate 11 of the blowing mechanism 9 and the air compressor, the pressurized gas can be used to quickly clean the mesh holes clogging the filter screen 8. Therefore, this filter-type dust removal mechanism, compared to... Figures 1-2The filter-type dust removal mechanism shown eliminates the need for workers to manually remove the top cover 2 and then remove the filter 8 for external cleaning. Instead, it automatically and online cleans the filter 8, which not only greatly reduces the workload of workers but also significantly improves the cleaning efficiency of the filter 8.

[0045] Furthermore, since there is no need to remove and clean the filter 8, there is no need to reinstall the filter 8, which further reduces the workload of workers.

[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A filter-type dust removal mechanism with self-cleaning function, comprising a housing (1), a top cover (2) detachably connected to the top surface of the housing (1), a smoke outlet pipe (3) fixed to the top cover (2), and a smoke inlet pipe (4) fixed to the outer side wall of the housing (1), wherein a mounting frame (5) is fixed inside the housing (1), and a central cavity (6) is formed inside the mounting frame (5), characterized in that: A filter screen (8) is welded on the top surface of the mounting frame (5). The filter screen (8) covers the central cavity (6) of the mounting frame (5). A blowing mechanism (9) for blowing the mesh of the filter screen (8) is provided on the right side wall of the outer shell (1). The purging mechanism (9) includes a feed cylinder (10) fixed on the right side wall of the outer shell (1). The piston rod of the feed cylinder (10) passes through the right side wall of the outer shell (1) to the left, and a longitudinally arranged air outlet plate (11) is fixed on the extended end. The air outlet plate (11) is located directly above the right end of the filter screen (8). Multiple air outlet holes (12) connected to the inner cavity of the air outlet plate (11) are opened on the bottom surface of the air outlet plate (11). A pipe (13) is welded on the right end face of the air outlet plate (11). The left port of the pipe (13) is connected to the inner cavity of the air outlet plate (11), and the right port of the pipe (13) passes through the right side wall of the outer shell (1) to the right and is connected to the working port of the air compressor. The left side wall of the outer casing (1) is provided with a shaking mechanism (14) for driving the filter screen (8) to shake up and down. The shaking mechanism (14) includes a rotating shaft (15) rotatably mounted between the left and right side walls of the outer casing (1) and a drive motor (16) fixed on the left side wall of the outer casing (1). The rotating shaft (15) is located directly below the mounting frame (5). The left end of the rotating shaft (15) is connected to the output shaft of the drive motor (16). Multiple cams (17) are also fixed on the rotating shaft (15). Each cam (17) extends into the central cavity of the mounting frame (5).

2. The filter-type dust removal mechanism with self-cleaning function according to claim 1, characterized in that: Multiple support legs that are supported on the ground are fixed on the bottom surface of the outer shell (1).

3. A filter-type dust removal mechanism with self-cleaning function according to claim 1, characterized in that: A sealing cap (18) is detachably connected to the material discharge hole of the outer casing (1).

4. A filter-type dust removal mechanism with self-cleaning function according to claim 1, characterized in that: The air outlets (12) are evenly distributed on the air outlet plate (11) along the length of the air outlet plate (11).

5. A filter-type dust removal mechanism with self-cleaning function according to claim 1, characterized in that: The outer casing (1) has a guide hole on the right side wall corresponding to the pipe (13), and the pipe (13) slides in conjunction with the guide hole.

6. A filter-type dust removal mechanism with self-cleaning function according to claim 1, characterized in that: Two cams (17) are fixed on the rotating shaft (15), and the two cams (17) are located on the left and right sides of the mounting frame (5) respectively.

Images