Rotary sub agitating inert powder multiuse dust collector

Abstract

The utility model provides a kind of rotation sub stirring inert powder multipurpose dust collector, including dust collector main body, filter device, back flushing gas bag and inert powder multipurpose device. Dust collector main body is equipped with dust removal cavity, waste gas air inlet and clean gas air outlet;Filter device is used to filter waste gas;Back flushing gas bag is towards filter device pulse back flushing dust cleaning, dust that covers in filter core filter surface is blown off;Inert powder multipurpose device includes rotary stirring mechanism, jet pipe and gas jet head, rotary stirring mechanism is located at the bottom of dust removal cavity, for stirring and dispersing deposition dust, jet pipe is connected external gas source, gas jet head is towards stirring mechanism and sprays, and inert powder is blown up, realizes inert powder circulation and multipurpose use. The utility model effectively prevents dust hardening, improves inert powder multipurpose utilization, and guarantees filtration efficiency and equipment stable operation.

Description

Technical Field

[0001] This utility model relates to the field of dust collector technology, and more specifically, to a rotary stirring inert powder reuse dust collector. Background Technology

[0002] In dust removal and waste gas treatment processes in industries such as chemical engineering, mining, and environmental protection, there are often large quantities of dust or waste gas containing flammable, explosive, and easily adhesive particles. If these pollutants directly enter the dust collector, they are highly susceptible to combustion and explosion risks due to friction and static electricity buildup. Furthermore, dust adhesion to the inner walls of the equipment can clog filter bags and obstruct airflow, severely impacting the stability of equipment operation. Therefore, pre-coating the inside of the dust collector with inert powder (calcium carbonate, diatomaceous earth, etc.) has become a crucial pretreatment method for these conditions. The inert powder forms an inert protective layer on the inner walls of the equipment and the surface of the filter bags, effectively reducing the activity of pollutants, mitigating safety hazards, and minimizing adhesion problems.

[0003] However, existing pre-coating processes have significant technical drawbacks: during the spraying process, inert powder is prone to agglomeration due to factors such as interparticle attraction and humidity changes, forming large-diameter agglomerates. Simultaneously, these agglomerated inert powders further combine with subsequently introduced pollutant dust to form mixed particles. These large or mixed particles, due to their high density, are difficult to pass through the filter structure with the airflow and tend to deposit at the bottom of the dust collector. After long-term operation, the deposited dust particles gradually accumulate and caking, not only preventing the inert powder from continuously providing protection and inerting effects, significantly reducing its utilization rate and dust removal efficiency, but also potentially clogging the ash discharge device, increasing equipment maintenance costs and downtime risks, thus limiting the application effectiveness of this type of dust collector. Utility Model Content

[0004] This application mainly addresses the problem that in the existing pre-spraying process, large particles formed by inert powder agglomeration and mixed dust particles are deposited and caking at the bottom of the dust collector, resulting in low inert powder utilization, reduced dust removal efficiency, high equipment maintenance costs, and high downtime risk. To overcome the above-mentioned defects of the prior art, this application provides a rotary stirring inert powder reuse dust collector.

[0005] This application provides a rotary agitator inert powder reuse dust collector, comprising: The dust collector body has a dust removal chamber inside, and the dust collector body has an exhaust gas inlet and a clean air outlet that connect to the dust removal chamber. A filtration device, installed inside the dust removal chamber, is used to filter the exhaust gas entering the dust removal chamber; A backflush air manifold is installed inside the dust removal chamber. The air blowing direction of the backflush air manifold is towards the filter device, and it is used to blow the dust adhering to the surface of the filter device to the bottom of the dust removal chamber. An inert powder reuse device includes a rotary stirring mechanism, an air jet pipe, and an air nozzle. The rotary stirring mechanism is installed at the bottom of the dust removal chamber and is used to stir and disperse the dust deposited at the bottom of the dust removal chamber. One end of the air jet pipe extends through the dust collector body into the dust removal chamber, and the other end is connected to an external air source. The air nozzle is fixedly connected to the end of the air jet pipe located in the dust removal chamber, and the air jet nozzle faces the rotary stirring mechanism for spraying air into the rotary stirring mechanism.

[0006] Compared with existing technologies, the rotary agitator inert powder reuse dust collector disclosed in this application has the following advantages: Exhaust gas enters the dust collection chamber through the exhaust gas inlet and is filtered by a filter device. The back-blowing air manifold promptly blows dust from the surface of the filter device to the bottom of the dust collection chamber, preventing clogging and ensuring smooth airflow. In the inert powder reuse device, the rotary agitator actively stirs and disperses the dust particles deposited at the bottom, preventing dust accumulation and caking at the source. Air nozzles spray air onto the rotary agitator, which not only helps disperse the dust but also reduces dust adhesion to the agitator, ensuring stable stirring effect. This solves the core technical defects of inert powder agglomeration and mixed dust particle deposition and caking in existing pre-coating processes, improves inert powder utilization, ensures its continuous inert protection and inerting effect, reduces safety risks caused by flammable, explosive, and easily adherent pollutants, and avoids filter clogging, reducing equipment maintenance costs and downtime risks, significantly improving the operational stability and dust removal efficiency of the dust collector.

[0007] In one possible implementation, the rotary stirring mechanism includes a pulverizing rotor and a rotary driver. The pulverizing rotor is rotatably connected to the bottom of the dust collection chamber and extends horizontally. The rotary driver is installed on the outer bottom of the dust collector body and drives the pulverizing rotor to rotate. Compared with the prior art, the horizontally extending pulverizing rotor can cover the bottom area of ​​the dust collection chamber, achieving uniform stirring of the deposited dust and improving the anti-caking effect. The rotary driver is installed on the outer bottom of the dust collector body, which avoids corrosion and interference of the driving components from the internal working conditions, facilitates the later inspection and maintenance of the driving components, and ensures stable transmission of driving power, guaranteeing the continuous operation of the stirring mechanism.

[0008] In one possible implementation, the pulverizing rotor has a cylindrical multi-mesh structure, and several stirring blades are evenly distributed circumferentially on its outer wall. Compared with the prior art, the cylindrical multi-mesh structure of the pulverizing rotor can help disperse fine dust particles and improve the dispersing effect; the stirring blades evenly distributed circumferentially on the outer wall can achieve multi-directional stirring of deposited dust, avoid local dust accumulation and caking, and further optimize the anti-caking performance.

[0009] In one possible implementation, multiple air nozzles are connected at intervals to the air jet pipe and positioned directly above the pulverizing rotor. Compared to existing technologies, the multiple spaced air nozzles expand the air jet coverage, ensuring that the key working areas of the rotating stirring mechanism receive airflow. Combined with the stirring blades, this achieves a synergistic dispersing effect of "mechanical stirring and airflow assistance," further improving dust dispersing efficiency. The air nozzles, positioned directly above the pulverizing rotor, can precisely spray air onto the stirring blades, promptly removing dust adhering to the blade surface, preventing dust buildup on the blades and reducing stirring performance, thus ensuring the continuous and stable operation of the stirring mechanism.

[0010] In one possible implementation, a monitoring probe is installed at the bottom of the dust removal chamber to monitor the dust level at the bottom of the chamber. Compared with existing technologies, the monitoring probe can monitor the dust level at the bottom of the dust removal chamber in real time, providing operators with accurate deposition data and avoiding caking problems caused by excessively high dust levels. This facilitates dynamic adjustment of the inert powder reuse device's operating status and ash removal timing based on the dust level, improving the intelligence of equipment operation and reducing ineffective energy consumption and unnecessary maintenance.

[0011] In one possible implementation, a pulse solenoid valve is installed on the section of the jet pipe located outside the dust collector body. Compared with the prior art, the pulse solenoid valve can flexibly control the switching cycle according to actual working conditions, thus assisting in the dispersion of dust at the bottom. This achieves precise control of the jet intensity, ensuring optimal anti-caking effects at different operating stages and further guaranteeing the stability and efficiency of the equipment operation.

[0012] In one possible implementation, the bottom of the dust collector body is provided with a dust discharge port, which communicates with the dust collection chamber and can be connected to an external high-negative-pressure dust discharge device. Compared with the prior art, the dust discharge port provides a clear discharge channel for deposited dust, and in conjunction with the external high-negative-pressure dust discharge device, it can achieve continuous and efficient dust discharge, while reducing the workload of manual dust removal and lowering operation and maintenance costs.

[0013] In one possible implementation, the dust collector body is equipped with an inspection door for maintaining the internal components. Compared with the prior art, the inspection door provides a convenient passage for the maintenance of the internal components, allowing personnel to directly inspect, repair, and replace core components such as the filter device, back-flushing air manifold, rotary stirring mechanism, and air nozzles, thus reducing maintenance difficulty. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this application. Figure 1 ; Figure 2This is a schematic diagram of the structure of this application. Figure 2 ; Figure 3 A cross-section of this application Figure 1 ; Figure 4 A cross-section of this application Figure 2 ; Figure 5 This is a schematic diagram of the structure of a powdered rotator; Explanation of reference numerals in the attached figures: 1. Dust collector body; 11. Dust collection chamber; 12. Exhaust gas inlet; 13. Clean air outlet; 14. Ash discharge port; 15. Inspection door; 2. Filter device; 3. Back-blowing air manifold; 4. Inert powder reuse device; 41. Rotary stirring mechanism; 411. Powdering rotor; 412. Rotary drive; 413. Stirring blades; 42. Air jet pipe; 421. Pulse solenoid valve; 43. Air nozzle; 5. Monitoring probe. Detailed Implementation

[0015] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0016] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0017] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0018] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] See Figures 1 to 5This application discloses a rotary stirring inert powder reuse dust collector, including: a dust collector body 1, a filter device 2, a back-blowing air manifold 3, and an inert powder reuse device 4.

[0020] The dust collector body 1 is a box structure welded from steel plates, forming a dust collection chamber 11 inside. The exhaust gas inlet 12 is located on the lower side wall of the dust collector body 1 and is connected to an external exhaust gas delivery pipeline via a flange, ensuring that the exhaust gas enters the dust collection chamber 11 evenly. The clean air outlet 13 is located at the top of the dust collector body 1, with a diameter matching the inlet. It is connected to an induced draft fan via a flange, creating a negative pressure dust collection environment, allowing the exhaust gas to enter from the bottom and exit from the top, extending the airflow path and improving filtration efficiency.

[0021] The filter device 2 is installed in the middle area of ​​the dust removal chamber 11, above the exhaust gas inlet 12 and below the clean gas outlet 13, ensuring that the exhaust gas can completely flow through the filter device 2. The filter device 2 is made of high-temperature resistant and corrosion-resistant filter bags or filter cartridges.

[0022] The back-blowing air manifold 3 is located at the top of the dust collection chamber 11 and consists of an air blowing pipe and a pulse valve. The air blowing direction is downward and aimed at the filter device 2. The back-blowing air manifold 3 is connected to an external air source. By controlling the pulse valve to trigger pulse jet blowing, the dust adhering to the surface of the filter device 2 is blown off to the bottom of the dust collection chamber 11.

[0023] The inert powder reuse device 4 includes a rotary stirring mechanism 41, an air jet pipe 42, and an air nozzle 43. The rotary stirring mechanism 41 is mounted at the bottom of the dust collection chamber 11 via a bracket, and its stirring range covers the bottom area of ​​the dust collection chamber 11, ensuring that the deposited dust particles are stirred. One end of the air jet pipe 42 penetrates into the dust collection chamber 11 from the side wall of the dust collector body 1, and the other end is connected to an external compressed air source; the pipe body is made of corrosion-resistant material, and the penetration part is sealed to prevent leakage. The air nozzle 43 is fixed to the end of the air jet pipe 42, with the air jet nozzle pointing downwards towards the rotary stirring mechanism 41, and spraying airflow to help disperse the dust.

[0024] In this embodiment, the rotary stirring mechanism 41 includes a pulverizing rotor 411 and a rotary driver 412. The pulverizing rotor 411 is a horizontally placed cylindrical structure with multiple mesh openings to enhance the dispersing effect. Several stirring blades 413 are evenly distributed circumferentially on the outer wall of the pulverizing rotor 411. The stirring blades 413 are strip-shaped and extend along the length of the pulverizing rotor 411, generating strong shearing force during rotation to efficiently disperse agglomerated dust. The pulverizing rotor 411 is mounted at the bottom of the dust collection chamber 11 via bearing seats at both ends. The rotary driver 412 is a geared motor, mounted on the bottom exterior of the dust collector body 1, and connected to the pulverizing rotor 411 via a coupling. The motor controls its rotation speed according to the dust level.

[0025] In this embodiment, there are three air nozzles 43, which are installed at equal intervals along the length of the jet pipe 42. The spacing is determined according to the length of the pulverizing rotor 411. The air nozzles 43 are located directly above the pulverizing rotor 411, with the jet direction pointing downwards and aimed at the surface of the rotor, forming a uniform airflow field that covers the entire working area of ​​the pulverizing rotor 411, enhancing dust pulverization and preventing local caking.

[0026] In this embodiment, a monitoring probe 5 is installed at the bottom of the dust removal chamber 11, and the detection direction of the monitoring probe 5 is pointed towards the dust deposition surface at the bottom of the dust removal chamber 11. The monitoring probe 5 collects the dust level height data at the bottom of the dust removal chamber 11 in real time and transmits the data to the control system. The control system controls the operation of the inert powder reuse device 4 to prevent excessive dust accumulation and caking.

[0027] In this embodiment, a pulse solenoid valve 421 is installed on the jet pipe 42, on the section of the jet pipe 42 located outside the dust collector body 1. By adjusting the valve opening, the airflow and pressure within the jet pipe 42 can be precisely controlled to adapt to different operating conditions. The solenoid valve is connected to the control system, and automatically adjusts the valve opening based on the dust level data collected by the monitoring probe 5, achieving intelligent control.

[0028] In this embodiment, the bottom of the dust collector body 1 is provided with a ash discharge port 14, which is circular in structure and communicates with the dust collection chamber 11. The ash discharge port 14 can be fixedly connected to an external high negative pressure ash discharge device such as a screw conveyor, scraper conveyor or ash discharge valve through a flange. According to the signal of the monitoring probe 5, the high negative pressure ash discharge device can realize intermittent or continuous ash discharge. When the dust level reaches the preset value, the high negative pressure ash discharge device is activated to discharge the dust waste in time, ensuring that the dust level at the bottom of the dust collection chamber 11 is maintained within a reasonable range.

[0029] In this embodiment, the dust collector body 1 is provided with an inspection door 15, which facilitates personnel to enter the interior to replace the filter device 2, clean the back-blowing air bag 3, or maintain the inert powder reuse device 4, greatly improving the equipment's maintenance convenience.

[0030] When the dust collector is working, the exhaust gas enters the dust collection chamber 11 through the exhaust gas inlet 12 at the lower side wall of the dust collector body 1. Under the negative pressure environment created by the induced draft fan, it flows upward and is filtered by the filter device 2 in the middle. The clean gas is discharged from the clean air outlet 13 at the top. The back-blowing air manifold 3 blows the dust on the surface of the filter device 2 to the bottom of the chamber through pulse jet blowing. The monitoring probe 5 monitors the dust level at the bottom in real time and transmits it to the control system. The system controls the operation of the inert powder reuse device 4: the rotary driver 412 drives the pulverizing rotor 411 to rotate. The pulverizing rotor 411, together with the stirring blades 413, disperses the deposited dust. The air nozzles 43 above spray air to assist in dispersing and cleaning the dust adhering to the blades. The pulse solenoid valve 421 adjusts the jet parameters as needed. The high negative pressure ash discharge device discharges the dust waste in a timely manner through the ash discharge port 14 according to the dust level signal.

[0031] The beneficial effects of this application include: I. Solving the core caking problem: The rotating stirring mechanism 41 (pulverizing rotor 411 with stirring blades 413) actively disperses the dust deposited at the bottom, and the air nozzle 43 sprays air to assist in dispersing and cleaning the dust adhering to the blades, thus preventing dust caking from the source, ensuring that the inert powder continues to play its inert protective role, and improving the utilization rate of inert powder.

[0032] II. Ensuring Filtration Efficiency and Safety: The backflush air manifold 3 uses pulses to blow away dust from the surface of the filter device 2, preventing filter clogging; it is suitable for flammable, explosive, and easily adhesive working conditions, reducing safety risks caused by friction and static electricity.

[0033] III. Enhanced Operational Intelligence and Economy: The monitoring probe 5 monitors the dust level in real time, and works with the pulse solenoid valve 421 to precisely control the air and the high negative pressure ash discharge device to discharge ash as needed, reducing ineffective energy consumption and manual maintenance; the design of the external rotary drive 412 and the inspection door 15 reduces maintenance difficulty and cost, and extends the equipment life.

[0034] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0035] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rotary stirring inert powder reuse dust collector, characterized in that, include: The dust collector body has a dust removal chamber inside, and the dust collector body has an exhaust gas inlet and a clean air outlet that connect to the dust removal chamber. A filtration device, installed inside the dust removal chamber, is used to filter the exhaust gas entering the dust removal chamber; A backflush air manifold is installed inside the dust removal chamber. The air blowing direction of the backflush air manifold is towards the filter device, and it is used to blow the dust adhering to the surface of the filter device to the bottom of the dust removal chamber. An inert powder reuse device includes a rotary stirring mechanism, an air jet pipe, and an air nozzle. The rotary stirring mechanism is installed at the bottom of the dust removal chamber and is used to stir and disperse the dust deposited at the bottom of the dust removal chamber. One end of the air jet pipe extends through the dust collector body into the dust removal chamber, and the other end is connected to an external air source. The air nozzle is fixedly connected to the end of the air jet pipe located in the dust removal chamber, and the air jet nozzle faces the rotary stirring mechanism for spraying air into the rotary stirring mechanism.

2. The rotary stirring inert powder reuse dust collector according to claim 1, characterized in that, The rotary stirring mechanism includes a pulverizing rotor and a rotary driver. The pulverizing rotor is rotatably connected to the bottom of the dust removal chamber and extends horizontally. The rotary driver is installed on the outer bottom of the dust collector body and is used to drive the pulverizing rotor to rotate.

3. The rotary stirring inert powder reuse dust collector according to claim 2, characterized in that, The pulverizing rotor has a cylindrical multi-mesh structure, and several stirring blades are evenly distributed around the outer wall of the pulverizing rotor.

4. The rotary stirring inert powder reuse dust collector according to claim 2, characterized in that, There are multiple air nozzles, which are connected at intervals to the jet pipe and located directly above the pulverizing rotor.

5. The rotary stirring inert powder reuse dust collector according to claim 1, characterized in that, A monitoring probe is installed at the bottom of the dust removal chamber, and the monitoring probe is used to monitor the dust level at the bottom of the dust removal chamber.

6. The rotary stirring inert powder reuse dust collector according to claim 1, characterized in that, A pulse solenoid valve is installed on the section of the jet pipe located outside the main body of the dust collector.

7. The rotary stirring inert powder reuse dust collector according to claim 1, characterized in that, The bottom of the dust collector body is provided with a dust discharge port, which is connected to the dust collection chamber and can be connected to an external high negative pressure dust discharge device.

8. The rotary stirring inert powder reuse dust collector according to claim 1, characterized in that, The dust collector body is equipped with an inspection door for maintaining the internal components.

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