Bag-type dust collector for rotary kiln

Abstract

The bag-type dust collector for the rotary kiln is simple in structure, long in service life and good in smoke filtering effect and comprises a box body, a rotatable mounting plate is arranged in the box body, a filtering bag is fixedly arranged on the mounting plate, the interior of the box body is divided into an upper cavity and a lower cavity by the mounting plate, and the upper cavity and the lower cavity are communicated with each other. The filter bag is located in the lower cavity, a driving mechanism for driving the mounting plate to rotate is arranged in the upper cavity, a plurality of raised lines are fixedly arranged on the side wall of the lower cavity in the axial direction of the box body, and the driving mechanism comprises a connecting sleeve fixedly mounted on the top wall of the upper cavity; a connecting sleeve is arranged in the upper cavity, a driving motor is fixedly mounted in the connecting sleeve, an output shaft of the driving motor is fixedly connected with the mounting plate, a plurality of heat dissipation holes communicated with the interior of the connecting sleeve are formed in the top wall of the upper cavity, and an air cooling channel used for cooling the driving motor is further formed in the upper cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection equipment, in particular to a bag dust collector for a rotary kiln. Background Art

[0002] In many production industries such as building materials, metallurgy, chemical industry, and environmental protection, rotary drum equipment is widely used to mechanically, physically or chemically treat solid materials. This type of equipment is called a rotary kiln. However, the waste gas and dust generated during the production process of the rotary kiln will have a great impact on the environment and industrial production. Therefore, it is necessary to use bag dust collector technology to control and treat the waste gas and dust. The rotary kiln bag dust collector is a kind of dust collector that uses bag filtration and back-blowing cleaning technology to remove dust from high-temperature, high-humidity, high-corrosion and other industrial waste gases emitted from the rotary kiln, so as to achieve the purpose of environmental pollution control and production safety.

[0003] For example, the Chinese patent with publication number CN210251590U discloses a rotary kiln bag dust collector with a vibration function. By arranging an oscillation mechanism on the bag body, the bag body can be vibrated to a certain extent without stopping the filtration process, thereby achieving the purpose of filtering and vibrating and cleaning, and indirectly improving the filtration efficiency of dust-containing gas.

[0004] The oscillation component in this patent includes an electromagnet, an annular connecting plate, a spring and an iron block. When the electromagnet is energized, it generates a certain magnetic force, which acts on the iron block on the top of the annular connecting plate. The annular connecting plate is moved upward by this magnetic force, thereby driving the cloth bag body to move upward. At this time, the spring is in a stretched state, and then the electromagnet is powered off. At this time, the magnetic force between the electromagnet and the iron block disappears. Under the action of the spring, the annular connection will move up and down repeatedly until it stops. During the resetting of the spring, the cloth bag body vibrates along with the annular connecting plate, and the cake layer on the cloth bag body can be shaken off by this vibration.

[0005] However, the temperature of the flue gas entering the bag filter is relatively high, which makes the ambient temperature inside the bag filter relatively high. This causes the electromagnet to work in a high-temperature environment for a long time. After long-term use, its magnetic properties will weaken, affecting its service life. At the same time, the structure is relatively complex, the production cost is high, and it is not economical and practical. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a bag dust collector for a rotary kiln, which has a simple structure, a long service life and a good smoke filtering effect.

[0007] In order to solve the above technical problems, the technical solution of the utility model is: a bag dust collector for a rotary kiln, comprising a box body, a rotatable mounting plate is provided in the box body, a filter bag is fixedly provided on the mounting plate, the mounting plate divides the interior of the box body into an upper cavity and a lower cavity, the filter bag is located in the lower cavity, a driving mechanism for driving the mounting plate to rotate is provided in the upper cavity, a plurality of convex strips are fixedly provided on the side wall of the lower cavity along the axial direction of the box body, the driving mechanism comprises a connecting sleeve fixedly installed on the top wall of the upper cavity, a driving motor is fixedly installed in the connecting sleeve, the output shaft of the driving motor is fixedly connected to the mounting plate, a plurality of heat dissipation holes connected to the interior of the connecting sleeve are provided on the top wall of the upper cavity, and an air cooling channel for cooling the driving motor is also provided in the upper cavity.

[0008] Furthermore, the box body is provided with an air inlet connected to the lower cavity and an air outlet connected to the upper cavity, and the air inlet is located below the filter bag.

[0009] Furthermore, a waste outlet is provided on the lower cavity.

[0010] Furthermore, the material of the convex strip is high temperature resistant rubber.

[0011] Furthermore, the filter bag is a pps filter bag.

[0012] Furthermore, the driving mechanism also includes a fixing plate, the fixing plate is rotatably connected to the mounting plate, and the connecting sleeve is fixedly connected to the fixing plate.

[0013] Furthermore, the output shaft of the driving motor passes through the fixing plate and is fixedly connected to the mounting plate, and the output shaft of the driving motor is rotatable relative to the fixing plate.

[0014] Furthermore, a mounting groove is provided on the side wall of the box body, and the mounting plate is rotatably disposed in the mounting groove.

[0015] Furthermore, the air cooling channel includes a first air inlet channel, a second air inlet channel and an air inlet port, the first air inlet channel is opened on the top wall of the upper cavity, the second air inlet channel is opened on the side wall of the connecting sleeve, the first air inlet channel is connected to the second air inlet channel, and the first air inlet channel and the second air inlet channel are both opened perpendicular to the mounting plate, the air inlet port is opened on the side wall of the connecting sleeve and the air inlet port is opened along the radial direction of the connecting sleeve, and the air inlet port is connected to the second air inlet channel.

[0016] Furthermore, an activated carbon plate is fixedly installed in the upper cavity, and a through hole is opened on the activated carbon plate for the connecting sleeve to pass through.

[0017] By adopting the above technical solution, the utility model has the following beneficial effects:

[0018] 1. The air inlet is located below the filter bag, which can extend the flow distance and time of the smoke in the lower cavity, so that the particle impurities in the smoke can be fully filtered by the filter bag. At the same time, it can prevent the harder metal particle impurities in the smoke from hitting the filter bag and causing damage to the filter bag;

[0019] 2. When the driving motor is working, it drives the mounting plate to rotate in the mounting groove. During the rotation process, the mounting plate drives the filter bag to rotate in the lower cavity. When the filter bag rotates, it rubs against the convex strips on the side wall of the lower cavity to generate vibration, which can make the impurities attached to the surface of the filter bag fall off;

[0020] 3. The filter bag is a pps filter bag with a straight and smooth longitudinal surface, and the dust is easy to peel off. At the same time, it is resistant to high temperature, has high strength, good wear resistance, and has excellent acid and alkali resistance. It is also a good flame retardant filter material with extremely high thermal stability.

[0021] 4. During operation, cooling gas is introduced into the first air inlet channel, and the cooling gas enters the connecting sleeve through the first air inlet channel, the second air inlet channel and the air inlet in sequence, so as to cool the driving motor and the output shaft in the connecting sleeve. The hot air floats up and is discharged through the heat dissipation holes on the top wall of the upper cavity, thereby increasing the service life of the driving motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of a bag dust collector for a rotary kiln of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the bag dust collector for the rotary kiln of the utility model after removing part of the box body;

[0024] Figure 3 It is a cross-sectional schematic diagram of a bag dust collector for a rotary kiln of the utility model;

[0025] Figure 4 for Figure 3 A magnified view of part A;

[0026] Figure 5 for Figure 3 A magnified view of part B;

[0027] Figure 6 for Figure 3 Enlarged view of part C.

[0028] Reference numerals: 1, box body; 2, mounting plate; 3, upper cavity; 4, lower cavity; 5, filter bag; 6, driving mechanism;

[0029] 7. Activated carbon plate; 8. Raised strip; 11. Air inlet; 12. Air outlet; 13. Waste outlet; 14. Installation slot;

[0030] 61. fixing plate; 62. connecting sleeve; 63. driving motor; 64. heat dissipation hole; 65. air cooling channel;

[0031] 651, first air inlet channel; 652, second air inlet channel; 653, air inlet. DETAILED DESCRIPTION

[0032] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0033] like Figure 1-6 As shown, in this embodiment, a bag dust collector for a rotary kiln is provided, including a housing 1, a rotatable mounting plate 2 is provided in the housing 1, a filter bag 5 is fixedly provided on the mounting plate 2, a driving mechanism 6 for driving the mounting plate 2 to rotate is provided in the housing 1, the mounting plate 2 divides the interior of the housing 1 into an upper cavity 3 and a lower cavity 4, the filter bag 5 is located in the lower cavity 4, the driving mechanism 6 is located in the upper cavity 3, and an activated carbon plate 7 is also fixedly installed in the upper cavity 3.

[0034] like Figure 1-3 As shown, in this embodiment, an air inlet 11 connected to the lower cavity 4 is provided on the box body 1, and the air inlet 11 is located below the filter bag 5. The smoke enters the lower cavity 4 through the air inlet 11 and is filtered by the filter bag 5 before entering the upper cavity 3. The box body 1 is also provided with an air outlet 12 connected to the upper cavity 3. The smoke is filtered twice by the activated carbon plate 7 in the upper cavity 3 and then discharged through the air outlet 12.

[0035] like Figure 1-3 As shown, in this embodiment, a waste outlet 13 is also provided on the lower cavity 4 .

[0036] like Figure 1-3 As shown, in this embodiment, the air inlet 11 is located below the filter bag 5, which can extend the flow distance and time of the smoke in the lower cavity 4, so that the particulate impurities in the smoke can be fully filtered by the filter bag 5. At the same time, it can prevent the harder metal particulate impurities in the smoke from colliding with the filter bag 5 and causing damage to the filter bag 5.

[0037] like Figure 1-3 As shown, in this embodiment, a plurality of convex strips 8 are fixedly provided on the side wall of the lower cavity 4 along the axial direction of the box body 1, and the driving mechanism 6 drives the mounting plate 2 to rotate. During the rotation, the mounting plate 2 drives the filter bag 5 to rotate in the lower cavity 4. When the filter bag 5 rotates, it rubs against the convex strips 8 on the side wall of the lower cavity 4 to generate vibration, which can make impurities attached to the surface of the filter bag 5 fall off, thereby increasing the service life of the filter bag 5.

[0038] like Figure 1-3 As shown, in this embodiment, a frame (not shown in the figure) for installing the filter bag 5 is fixedly installed on the mounting plate 2, and the filter bag 5 is sleeved on the frame. The material of the frame is high-hardness carbon steel, which can prevent the frame from being damaged after colliding with the convex strip 8. The material of the convex strip 8 is high-temperature resistant rubber. When the frame collides and rubs with the filter bag 5, the convex strip 8 undergoes elastic deformation to protect the frame and the filter bag 5 from damage. The filter bag 5 is a pps filter bag 5, and the longitudinal surface of the filter bag 5 is straight and smooth, and the dust is easy to peel off. At the same time, it is resistant to high temperature, high strength, good wear resistance, and has excellent acid and alkali resistance. It is also a good flame retardant filter material with extremely high thermal stability.

[0039] like Figure 1-6 As shown, in the present embodiment, the driving mechanism 6 comprises a fixing plate 61, which is rotatably connected to the mounting plate 2, a connecting sleeve 62 is fixedly mounted on the fixing plate 61, the other end of the connecting sleeve 62 is fixedly connected to the top wall of the upper cavity 3, a driving motor 63 is fixedly mounted in the connecting sleeve 62, the output shaft of the driving motor 63 passes through the fixing plate 61 and is fixedly connected to the mounting plate 2, and the output shaft of the driving motor 63 is rotatable relative to the fixing plate 61, a mounting groove 14 is opened on the side wall of the box body 1, and the mounting plate 2 is rotatably arranged in the mounting groove 14, so that the driving motor 63 can drive the mounting plate 2 to rotate in the mounting groove 14 when working.

[0040] like Figure 1-3 As shown, in this embodiment, a through hole (not shown in the figure) for the connecting sleeve 62 to pass through is opened on the activated carbon plate 7, and the activated carbon plate 7 can absorb the pungent smell in the smoke.

[0041] like Figure 1-6As shown, in the present embodiment, since the temperature of the smoke entering the interior of the box body 1 is relatively high, and the output shaft of the driving motor 63 also generates heat when the driving motor 63 is working, in order to prevent the output shaft of the driving motor 63 from being damaged due to excessive temperature, a plurality of heat dissipation holes 64 connected to the interior of the connecting sleeve 62 are provided on the top wall of the upper cavity 3. At the same time, an air cooling channel 65 for cooling the driving motor 63 is also provided in the upper cavity 3. The air cooling channel 65 includes a first air inlet channel 651, a second air inlet channel 652 and an air inlet port 653. The first air inlet channel 651 is provided on the top wall of the upper cavity 3, and the second air inlet channel 652 is provided on the side wall of the connecting sleeve 62. The first air inlet channel 651 is connected to the second air inlet channel 652, and the first air inlet channel 651 is connected to the second air inlet channel 652. 651 and the second air inlet channel 652 are both opened perpendicular to the mounting plate 2, the air inlet 653 is opened on the side wall of the connecting sleeve 62 and the air inlet 653 is opened along the radial direction of the connecting sleeve 62, the air inlet 653 is connected with the second air inlet channel 652, when working, the cooling gas can be introduced into the first air inlet channel 651, the cooling gas passes through the first air inlet channel 651, the second air inlet channel 652 and the air inlet 653 in turn and enters the connecting sleeve 62, so as to cool the driving motor 63 and the output shaft thereof in the connecting sleeve 62, the hot air floats up and is discharged through the heat dissipation holes 64 on the top wall of the upper cavity 3, and at the same time, since the other end of the connecting sleeve 62 is fixedly connected to the top wall of the box body 1, the smoke will not be discharged from the heat dissipation holes 64.

[0042] The working principle of the utility model is as follows: the smoke enters the lower cavity 4 through the air inlet 11, is filtered by the filter bag 5, and then enters the upper cavity 3; the smoke is filtered twice by the activated carbon plate 7 in the upper cavity 3 and is discharged through the air outlet 12; the air inlet 11 is located below the filter bag 5, which can extend the flow distance and time of the smoke in the lower cavity 4, so that the particulate impurities in the smoke are fully filtered by the filter bag 5; at the same time, it can prevent the harder metal particulate impurities in the smoke from hitting the filter bag 5 and causing damage to the filter bag 5; at the same time, when the driving motor 63 is working, it drives the mounting plate 2 to rotate in the mounting groove 14, and the mounting plate 2 drives the filter bag 5 to rotate in the lower cavity 4 during the rotation process; when the filter bag 5 rotates, it rubs against the convex strips 8 on the side wall of the lower cavity 4 to generate vibration, which can cause impurities attached to the surface of the filter bag 5 to fall off, thereby improving the service life of the filter bag 5, and the convex strips 8 can also be used to filter the filter bag 5. The material of 8 is high temperature resistant rubber. When the frame collides and rubs with the filter bag 5, the convex strip 8 undergoes elastic deformation to protect the frame and the filter bag 5 from damage. The filter bag 5 is a pps filter bag 5. The longitudinal surface of the filter bag 5 is straight and smooth, and the dust is easy to peel off. At the same time, it is resistant to high temperature, has high strength, good wear resistance, and has excellent acid and alkali resistance. It is also a good flame retardant filter material with extremely high thermal stability. Further, during operation, cooled gas is introduced into the first air inlet channel 651, and the cooled gas passes through the first air inlet channel 651, the second air inlet channel 652 and the air inlet 653 in turn into the connecting sleeve 62, so as to cool the driving motor 63 and its output shaft in the connecting sleeve 62. The hot air floats up and is discharged through the heat dissipation holes 64 on the top wall of the upper cavity 3, so as to increase the service life of the driving motor 63.

[0043] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bag dust collector for a rotary kiln, comprising a housing (1), a rotatable mounting plate (2) provided in the housing (1), a filter bag (5) fixedly provided on the mounting plate (2), and characterized in that: The mounting plate (2) divides the interior of the box (1) into an upper cavity (3) and a lower cavity (4), the filter bag (5) is located in the lower cavity (4), a driving mechanism (6) for driving the mounting plate (2) to rotate is provided in the upper cavity (3), a plurality of ridges (8) are fixedly provided on the side wall of the lower cavity (4) along the axial direction of the box (1), the driving mechanism (6) comprises a connecting sleeve (62) fixedly mounted on the top wall of the upper cavity (3), a driving motor (63) is fixedly mounted in the connecting sleeve (62), an output shaft of the driving motor (63) is fixedly connected to the mounting plate (2), a plurality of heat dissipation holes (64) connected to the interior of the connecting sleeve (62) are provided on the top wall of the upper cavity (3), and an air cooling channel (65) for cooling the driving motor (63) is also provided in the upper cavity (3).

2. A bag dust collector for a rotary kiln according to claim 1, characterized in that: The box body (1) is provided with an air inlet (11) communicating with the lower cavity (4) and an air outlet (12) communicating with the upper cavity (3), and the air inlet (11) is located below the filter bag (5).

3. The bag dust collector for a rotary kiln according to claim 1, characterized in that: The lower cavity (4) is provided with a waste material outlet (13).

4. The bag dust collector for a rotary kiln according to claim 1, characterized in that: The material of the convex strip (8) is high temperature resistant rubber.

5. The bag dust collector for a rotary kiln according to claim 1, characterized in that: The filter bag (5) is a pps filter bag (5).

6. The bag dust collector for a rotary kiln according to claim 1, characterized in that: The driving mechanism (6) further comprises a fixing plate (61), the fixing plate (61) being rotatably connected to the mounting plate (2), and the connecting sleeve (62) being fixedly connected to the fixing plate (61).

7. The bag dust collector for a rotary kiln according to claim 6, characterized in that: The output shaft of the drive motor (63) passes through the fixed plate (61) and is fixedly connected to the mounting plate (2), and the output shaft of the drive motor (63) is rotatable relative to the fixed plate (61).

8. The bag dust collector for a rotary kiln according to claim 1, characterized in that: A mounting groove (14) is provided on the side wall of the box body (1), and the mounting plate (2) is rotatably arranged in the mounting groove (14).

9. The bag dust collector for a rotary kiln according to claim 1, characterized in that: The air cooling channel (65) includes a first air inlet channel (651), a second air inlet channel (652) and an air inlet port (653), wherein the first air inlet channel (651) is opened on the top wall of the upper cavity (3), and the second air inlet channel (652) is opened on the side wall of the connecting sleeve (62), the first air inlet channel (651) is connected to the second air inlet channel (652), and the first air inlet channel (651) and the second air inlet channel (652) are both opened perpendicular to the mounting plate (2), the air inlet port (653) is opened on the side wall of the connecting sleeve (62) and the air inlet port (653) is opened along the radial direction of the connecting sleeve (62), and the air inlet port (653) is connected to the second air inlet channel (652).

10. The bag dust collector for a rotary kiln according to claim 1, characterized in that: An activated carbon plate (7) is also fixedly installed in the upper cavity (3), and a through hole for the connecting sleeve (62) to pass through is provided on the activated carbon plate (7).

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