Pulse dust removal device for pulverizer

Abstract

The utility model provides a pulse dust removal device for a crusher, relates to the technical field of dust removal devices, and aims to solve the problems that fine powder is easy to accumulate on the surfaces of filter bags, the filtering resistance is increased, micro powder suspends among the filter bags due to airflow disturbance, frequent back blowing for dust removal is needed, and the abrasion of the filter bags is accelerated due to direct impact when the conventional dust removal device is used. The bottom of the main body is of a conical structure; the compressed gas tank is fixedly arranged on the top side of the main body; a pipeline is arranged on the compressed gas tank; mounting pieces are arranged at the bottoms of the pipelines; and a spiral guide plate is arranged in the mounting piece. The round hole of the pipeline is of a tangential inclined structure, the inclination angle is 15-35 degrees, the angle of the spiral flow guide plate arranged in the pipeline is 20-50 degrees, dust airflow is guided to form centrifugal rotational flow, the dust cleaning effect is better compared with a direct-flushing type impact mode, filtering resistance is reduced, repeated injection is not needed, energy consumption is reduced, and the dust removal efficiency is improved. And the service life of the filter cloth bag is prolonged to more than six months.

Description

Technical Field

[0001] This utility model belongs to the technical field of dust removal devices, and more specifically, it relates to a pulse dust removal device for a pulverizer. Background Technology

[0002] A pulse jet dust collector is a high-efficiency bag filter that uses high-pressure compressed air pulse jet cleaning. It releases 0.4-0.7MPa high-pressure airflow in a reverse jet to powerfully remove accumulated dust and maintain continuous system operation.

[0003] Based on existing technology, it has been found that when existing dust collection devices are in use, pulse dust collectors mostly adopt a direct-flow air intake design. Uneven dust distribution can lead to fine powder accumulating on the surface of the filter bags, forming a "powder cake layer," which increases filtration resistance. Micropowder is suspended between the filter bags due to airflow disturbance, with an actual dust removal rate of only 70%-80%, requiring frequent back-blowing for cleaning. Direct impact accelerates filter bag wear. In addition, when existing dust collection devices are in use, traditional dust collection devices have a slow efficiency in drawing in coarse particles and allowing them to fall into the ash hopper, resulting in poor dust collection efficiency inside the device. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a pulse dust collector for a pulverizer. This solves the problems of existing dust collectors, which often employ a direct-flow air intake design, leading to fine powder accumulation on the filter bag surface, increasing filtration resistance. Microparticles, due to airflow disturbances, remain suspended between the filter bags, requiring frequent backflushing for cleaning, and direct impact accelerates filter bag wear. Furthermore, existing dust collectors have a slow efficiency in drawing in coarse particles and allowing them to fall into the ash hopper, resulting in poor internal dust removal efficiency.

[0005] This utility model discloses a pulse dust removal device for a pulverizer, which is achieved through the following specific technical means:

[0006] A pulse dust collector for a pulverizer includes a dust removal mechanism, a separation mechanism, a cleaning mechanism, and a filtration mechanism;

[0007] A separation mechanism is provided at the bottom of the dust removal mechanism; a cleaning mechanism is provided at the top of the dust removal mechanism; a filtration mechanism is provided at the top of the dust removal mechanism; and the filtration mechanism is located at the top of the cleaning mechanism.

[0008] The dust removal mechanism includes: a main body, the bottom of which is configured as a conical structure; an air inlet is provided on the bottom side of the main body; and an air outlet is provided on the top side of the main body.

[0009] The cleaning mechanism includes: a compressed air tank, which is fixedly installed on the top side of the main body; a pipe is provided on the compressed air tank; an installation component is provided at the bottom of the pipe; and a spiral guide plate is provided inside the installation component.

[0010] Furthermore, a support is provided at the bottom of the main body; a top cover is provided at the top of the main body by bolts; and one side of the air outlet is connected to an external fan.

[0011] Furthermore, the dust removal mechanism also includes: a collection component;

[0012] The collecting component is fixedly connected to the bottom of the main body by bolts; a drawer is slidably provided on the bottom side of the collecting component.

[0013] Furthermore, the separation mechanism includes: a fixing component and a separating component;

[0014] The fixing component is fixedly installed at the bottom of the main body; the separating component is connected to the output shaft of the motor on the fixing component; blades are evenly arranged on the separating component; the separating component is located at the top of the air inlet.

[0015] Furthermore, the pipe is equipped with a solenoid valve; the circular hole at the bottom of the pipe is configured with a tangentially inclined structure; the inclination angle of the circular hole on the pipe is set to 15°-35°; and the guiding angle of the spiral guide plate is set to 20°-50°.

[0016] Furthermore, the filtration mechanism includes: a fixing plate and a filter bag;

[0017] The fixing plate is fixedly installed inside the top of the main body; the fixing plate is provided with a round hole; the filter bag is provided with a support frame inside; the filter bag is installed inside the round hole on the fixing plate; the filter bag corresponds to the mounting part and the spiral guide plate; the fixing plate is located at the bottom of the air outlet.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This device includes an installation component and a spiral guide plate. The installation component is located at the bottom of the pipe, while the spiral guide plate is located inside the installation component. During use, the compressed air inside the compressed air tank is controlled by a solenoid valve to be discharged through the pipe. The circular hole of the pipe is designed with a tangential inclined structure with an inclination angle of 15°-35°. The spiral guide plate inside has an angle of 20°-50°, which guides the dust airflow to form a centrifugal vortex. Compared with the direct impact method, the dust removal effect is stronger, the filtration resistance is reduced, the need for repeated blowing is eliminated, energy consumption is saved, the wear of the filter bag is reduced, and the service life of the filter bag is extended to more than six months, making it more practical.

[0020] 2. In this device, a separator is installed. This separator is connected to the motor output shaft on the fixed component. Thus, during use, an external fan is connected to the air outlet. The fan forces dust to enter through the air inlet, while the motor on the fixed component drives the separator to rotate. The separator is located at the top of the air inlet, which allows the absorbed dust to rotate and settle along the bottom side wall of the main body (centrifugal acceleration ≥2g). Coarse particles fall into the collection component in advance, and fine powder is more evenly distributed when passing through the filter bag. The dust discharge rate is increased to ≥95%, the separation efficiency is increased by 40% compared with traditional dust collectors, the amount of dust entering the filter bag is reduced by 30%, and the initial resistance of the filter bag is reduced to ≤500Pa. Attached Figure Description

[0021] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention.

[0022] Figure 2 This is a partial cross-sectional three-dimensional structural diagram of the main body of this utility model.

[0023] Figure 3 This is a three-dimensional structural diagram of the separation mechanism of this utility model.

[0024] Figure 4 This is a three-dimensional structural diagram of the filtration and cleaning mechanisms of this utility model.

[0025] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0026] 1. Dust removal mechanism; 101. Main body; 102. Air inlet; 103. Air outlet; 104. Collection component; 2. Separation mechanism; 201. Fixing component; 202. Separating component; 3. Cleaning mechanism; 301. Compressed air tank; 302. Pipeline; 303. Mounting component; 304. Spiral guide plate; 4. Filtration mechanism; 401. Fixing plate; 402. Filter bag. Detailed Implementation

[0027] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0028] Example:

[0029] As attached Figure 1 To be continued Figure 4 As shown:

[0030] This utility model provides a pulse dust removal device for a pulverizer, including a dust removal mechanism 1, a separation mechanism 2, a cleaning mechanism 3, and a filtering mechanism 4;

[0031] A separation mechanism 2 is provided at the bottom of the dust removal mechanism 1; a cleaning mechanism 3 is provided at the top of the dust removal mechanism 1; a filtration mechanism 4 is provided at the top of the dust removal mechanism 1; and the filtration mechanism 4 is located at the top of the cleaning mechanism 3.

[0032] The dust removal mechanism 1 includes: a main body 101, the bottom of which is a conical structure; an air inlet 102 is provided on the bottom side of the main body 101; and an air outlet 103 is provided on the top side of the main body 101. Here, the main body 101 is the body of the dust removal device, the air inlet 102 is used to allow dust to enter, and the air outlet 103 is used to connect an external fan so that the air inlet 102 can suck in dust. Connecting an external fan is a common technique in the art, and it is connected to the fan through a connecting pipe, which will not be described in detail here.

[0033] The cleaning mechanism 3 includes: a compressed air tank 301, which is fixedly installed on the top side of the main body 101; a pipe 302 is installed on the compressed air tank 301; an installation component 303 is installed at the bottom of the pipe 302; and a spiral guide plate 304 is installed inside the installation component 303. The compressed air tank 301 is used to control the compressed air through the round hole on the pipe 302 via a solenoid valve. The round hole of the pipe 302 is designed with a tangential inclined structure and the inclination angle is set to 15°-35°. The spiral guide plate 303 is installed inside with an angle of 20°-50° to guide the dust airflow to form a centrifugal vortex. Compared with the direct impact method, the dust removal effect is stronger, the filtration resistance is reduced, repeated blowing is not required, energy consumption is saved, and the wear of the filter bag 402 is reduced, extending the service life of the filter bag 402 to more than six months, making it more practical.

[0034] Among them, such as Figure 1 As shown, a support is provided at the bottom of the main body 101; a top cover is provided at the top of the main body 101 by bolts; and one side of the air outlet 103 is connected to an external fan.

[0035] Among them, such as Figure 1 As shown, the dust removal mechanism 1 also includes: a collection component 104; the collection component 104 is fixedly connected to the bottom of the main body 101 by bolts; a drawer is slidably provided on the bottom side of the collection component 104; the drawer slidably provided on the bottom of the collection component 104 here facilitates the handling of dust.

[0036] Among them, such as Figure 3As shown, the separation mechanism 2 includes: a fixing member 201 and a separating member 202; the fixing member 201 is fixedly installed at the bottom of the main body 101; the separating member 202 is connected to the output shaft of the motor on the fixing member 201; blades are evenly arranged on the separating member 202; the separating member 202 is located at the top of the air inlet 102; the separating member 202 is used to rotate by the motor and is located at the top of the air inlet 102, so as to pre-separate the dust, and cooperate with the conical structure at the bottom of the main body 101. The dust rotates and settles along the side wall of the dust collector (centrifugal acceleration ≥2g), the coarse particles fall into the collection member 104 in advance, and the fine powder is more evenly distributed when passing through the filter bag 402, and the powder discharge rate is increased to ≥95%.

[0037] Among them, such as Figure 4 As shown, a solenoid valve is installed on pipe 302; the circular hole at the bottom of pipe 302 is designed with a tangentially inclined structure; the inclination angle of the circular hole on pipe 302 is set to 15°-35°; and the guiding angle of the spiral guide plate 304 is set to 20°-50°.

[0038] Among them, such as Figure 2 As shown, the filtration mechanism 4 includes: a fixing plate 401 and a filter bag 402; the fixing plate 401 is fixedly installed inside the top of the main body 101; a round hole is provided on the fixing plate 401; a support frame is provided inside the filter bag 402; the filter bag 402 is installed inside the round hole on the fixing plate 401; the filter bag 402 corresponds to the mounting part 303 and the spiral guide plate 304; the fixing plate 401 is located at the bottom of the air outlet 103; the fixing part 401 here is used to install the filter bag 402, and the filter bag 402 is used to filter fine powder in the air, and a gap is left between the filter bag 402 and the mounting part 303 so that the filtered air can be discharged from the air outlet 103.

[0039] This device was tested by crushing corn stalks, with an initial dust concentration of 200 g / m³. 3 The experimental group used a pipe 302 with an angle of 25° and a separator 202 with an inclination angle of 30°. The results were compared with those of a jet dust collector as follows:

[0040]

[0041]

[0042] In another embodiment, an integrated differential pressure sensor (monitoring bag resistance), a dust concentration detector (based on laser scattering principle), and a PLC controller can be installed on the main body to dynamically adjust the blade angle and backflushing air pressure based on real-time data and via a motor.

[0043] The specific usage and function of this embodiment are as follows:

[0044] In this invention, when using the device, an external fan is connected to the air outlet 103, allowing dust to be drawn in through the air inlet 102. A motor on the fixing member 201 drives the separating member 202 to rotate, and the separating member 202 is positioned at the top of the air inlet. The blades on the separating member 202 assist in filtering coarse particles, allowing the absorbed dust to rotate and settle along the bottom sidewall of the main body 101. Coarse particles fall into the collection member 104 beforehand, and fine powder is more evenly distributed when passing through the filter bag 402, resulting in higher powder discharge efficiency. The solenoid valve controls the compressed air inside the compressed air tank 301 to be discharged through the pipe 302. The circular hole of the pipe 302 is set with a tangential inclined structure, and the spiral guide plate 304 is set to guide the dust airflow to form a centrifugal vortex, so that compressed air can be sprayed onto the filter bag 402, causing the dust on the filter bag 402 to be shaken off. There is a gap between the mounting part 303 and the filter bag 402, so that the filtered air is discharged through the air outlet 103. The dust inside the collection part 104 can be processed by pulling out the drawer.

Claims

1. A pulse dust collector for a pulverizer, characterized in that: It includes a dust removal mechanism (1), a separation mechanism (2), a cleaning mechanism (3), and a filtration mechanism (4); The dust removal mechanism (1) is provided with a separation mechanism (2) at its bottom; the cleaning mechanism (3) is provided at the top of the dust removal mechanism (1); the filtering mechanism (4) is provided at the top of the dust removal mechanism (1); the filtering mechanism (4) is located at the top of the cleaning mechanism (3); The dust removal mechanism (1) includes: a main body (101), the bottom of which is configured as a conical structure; an air inlet (102) is provided on the bottom side of the main body (101); and an air outlet (103) is provided on the top side of the main body (101). The cleaning mechanism (3) includes: a compressed air tank (301), which is fixedly installed on the top side of the main body (101); a pipe (302) is provided on the compressed air tank (301); an installation component (303) is provided at the bottom of the pipe (302); and a spiral guide plate (304) is provided inside the installation component (303).

2. The pulse dust collector for a pulverizer according to claim 1, characterized in that: The bottom of the main body (101) is provided with a bracket; the top of the main body (101) is provided with a top cover by bolts; one side of the air outlet (103) is connected to an external fan.

3. The pulse dust collector for a pulverizer according to claim 1, characterized in that: The dust removal mechanism (1) further includes: a collection component (104); The collecting component (104) is fixedly connected to the bottom of the main body (101) by bolts; a drawer is slidably provided on the bottom side of the collecting component (104).

4. The pulse dust collector for a pulverizer according to claim 1, characterized in that: The separation mechanism (2) includes: a fixing component (201) and a separating component (202); The fixing member (201) is fixedly installed at the bottom of the main body (101); the separating member (202) is connected to the output shaft of the motor on the fixing member (201); blades are evenly arranged on the separating member (202); the separating member (202) is located at the top of the air inlet (102).

5. A pulse dust collector for a pulverizer according to claim 1, characterized in that: A solenoid valve is provided on the pipe (302); the circular hole at the bottom of the pipe (302) is configured as a tangentially inclined structure; the inclination angle of the circular hole on the pipe (302) is set to 15°-35°; the guiding angle of the spiral guide plate (304) is set to 20°-50°.

6. A pulse dust collector for a pulverizer according to claim 5, characterized in that: The filtration mechanism (4) includes: a fixing plate (401) and a filter bag (402); The fixing plate (401) is fixedly installed inside the top of the main body (101); the fixing plate (401) is provided with a round hole; the filter bag (402) is provided with a support frame inside; the filter bag (402) is installed inside the round hole on the fixing plate (401); the filter bag (402) corresponds to the mounting part (303) and the spiral guide plate (304); the fixing plate (401) is located at the bottom of the air outlet (103).

Images