Filtering and washing composite dust removal device

Abstract

The invention relates to the technical field of industrial waste gas treatment equipment, and discloses a filtering and washing composite dust removal device which comprises a machine body, the top of the machine body is connected with a finished product catcher, and the outer side of the finished product catcher is connected with a cyclone dust collector. Through cooperative arrangement of the cyclone dust collector and the finished product catcher, firstly, coarse particles are efficiently separated by utilizing centrifugal force, and then ultrafine particles are captured by filtering, so that the problem that dust with different particle sizes is difficult to consider in a single dust removal mode is effectively solved; an injection pipe of the rotatable nozzle group is matched with the circulating washing system to prevent the filter bag from hardening and blocking; the continuous deslagging system composed of the rotary discharger and the blow-off pipe avoids dust accumulation, the maintenance frequency is remarkably reduced, the device can keep stable and efficient dust removal performance when treating complex industrial dust, energy consumption and maintenance cost are greatly reduced, and the problem of a traditional single-function dust removal device is perfectly solved.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial waste gas treatment equipment, and in particular to a filtering and washing composite dust removal device. Background Art

[0002] In modern industrial production and urban environments, dust pollution is a critical issue affecting air quality, equipment lifespan, and human health. Dust removal devices, as highly effective environmental management devices, utilize physical filtration, electrostatic adsorption, or mechanical separation technologies and are widely used in high-dust industries such as thermal power generation, metallurgy, chemicals, and building materials. For example, bag filters use fiber filter media to intercept micron-sized particles, electrostatic precipitators utilize high-voltage electric fields to absorb charged dust, and cyclone dust collectors rely on centrifugal force to separate larger particles.

[0003] Existing single-function dust removal devices have obvious defects in dealing with complex dust pollution in industry due to the lack of synergistic effects of filtration and washing. Sticky dust or high-humidity gas can easily cause filter bag caking, and ultrafine particles are difficult to effectively capture through simple water washing, resulting in increased system operation resistance and increased energy consumption. The actual dust removal efficiency is often lower than the design value. At the same time, this technical limitation will significantly increase the frequency of equipment maintenance and the cost of replacing consumables, making enterprises face higher pressure to meet environmental standards and operating expenses. Summary of the Invention

[0004] In view of the above-mentioned problems existing in the existing dry and wet dust removal devices, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a filtering and washing composite dust removal device.

[0006] In order to solve the above technical problems, the present invention provides the following technical solution: comprising a machine body, a finished product collector is connected to the top of the machine body, and a cyclone dust collector is connected to the outer side of the finished product collector.

[0007] As a preferred solution of the filtering and washing composite dust removal device of the present invention, the outer side of the finished product collector is connected to an inlet pipe, and the end of the inlet pipe is connected to a circulating water pump.

[0008] As a preferred solution of the filtering and washing composite dust removal device of the present invention, the outer side of the circulating water pump is connected to a circulating water pool, and the top of the circulating water pool is connected to a washing pipe.

[0009] As a preferred embodiment of the filtering and washing composite dust removal device of the present invention, the end of the washing pipe is connected to a spray pipe, the end of the spray pipe is connected to a water discharge pipe, and the other end of the spray pipe is connected to the outside of the circulating water pool.

[0010] As a preferred solution of the filtering and washing composite dust removal device of the present invention, the end of the water outlet pipe is connected to a gas outlet pipe, and the bottom of the gas outlet pipe is connected to a fan.

[0011] As a preferred solution of the filtering and washing composite dust removal device of the present invention, the bottom of the cyclone dust collector is connected to a rotary feeder, and the bottom of the rotary feeder is fixedly connected to the top of the machine body.

[0012] As a preferred solution of the filtering and washing composite dust removal device of the present invention, a sewage pipe is connected to the outside of the circulating water pool, and the sewage pipe is connected to the sludge dewatering device.

[0013] As a preferred solution of the filtering and washing composite dust removal device of the present invention, the injection pipe is provided with a rotatable nozzle group, and the nozzle angle adjustment range is thirty degrees to ninety degrees.

[0014] As a preferred solution of the filtering and washing composite dust removal device described in the present invention, the finished product collector has a built-in pressure difference sensor, which forms a closed-loop control with the circulating water pump, and the pressure difference alarm threshold is 1500~2000Pa.

[0015] As a preferred solution of the filtering and washing composite dust removal device of the present invention, a pressure regulating valve is provided between the washing pipe and the spraying pipe for controlling the spraying pressure.

[0016] The beneficial effects of the present invention are as follows: through the coordinated arrangement of the cyclone dust collector and the finished product collector, coarse particles are first separated efficiently by centrifugal force, and then ultrafine particles are captured by filtration, which effectively solves the problem that a single dust removal method is difficult to take into account dust of different particle sizes; the injection pipe of the rotatable nozzle group is combined with the circulating washing system to prevent the filter bag from being compacted and blocked; the continuous slag discharge system composed of the rotary feeder and the sewage pipe avoids dust accumulation and significantly reduces the maintenance frequency, so that the device can maintain stable and efficient dust removal performance when dealing with complex industrial dust, and greatly reduces energy consumption and maintenance costs, perfectly overcoming the problems of traditional single-function dust removal devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2It is a schematic diagram of the single-machine composite dust removal structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the independent equipment composite dust removal structure of the present invention.

[0021] In the figure: 1. Machine body; 2. Inlet pipe; 3. Cyclone dust collector; 4. Finished product collector; 5. Circulating water pump; 6. Circulating water tank; 7. Washing pipe; 8. Spray pipe; 9. Water discharge pipe; 10. Gas discharge pipe; 11. Fan; 12. Rotary feeder; 13. Sewage pipe. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0025] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0026] Example 1

[0027] Reference Figures 1 to 3 , which is the first embodiment of the present invention, provides a filtering and washing composite dust removal device, which includes a body 1, a finished product collector 4 is connected to the top of the body 1, and a cyclone dust collector 3 is connected to the outside of the finished product collector 4.

[0028] Among them, the body 1 is used as the core carrier, and the finished product collector 4 and the cyclone dust collector 3 are integrated on the top to form a compact composite dust removal system. This layout design effectively optimizes the equipment space utilization, makes the airflow path more reasonable, and ensures the seamless connection of primary dust removal and fine filtration functions. The body 1 serves as the overall supporting structure, providing a stable installation foundation for each functional module, which is convenient for subsequent maintenance and inspection.

[0029] Specifically, the outside of the finished product collector 4 is connected to the inlet pipe 2, the end of the inlet pipe 2 is connected to the circulating water pump 5, the outside of the circulating water pump 5 is connected to the circulating water pool 6, and the top of the circulating water pool 6 is connected to the washing pipe 7.

[0030] By directly connecting the inlet pipe 2 to the circulating water pump 5, a coordinated channel for dust-laden gas entry and liquid circulation is constructed, so that the dust-laden gas can form initial contact with the washing liquid after entering the system, wetting the dust particles in advance, reducing the difficulty of subsequent dust removal. The layout of the circulating water pump 5 optimizes the pipeline direction, reduces energy loss during fluid transportation, and provides a stable power source for the entire washing system.

[0031] The vertical arrangement of the circulating water tank 6 and the washing pipe 7 forms a complete liquid circulation loop, allowing the washing liquid to naturally flow back to the circulating water tank 6 by gravity, reducing pumping energy consumption. The washing pipe 7 is installed at the top of the circulating water tank 6, ensuring uniform distribution of the washing liquid and facilitating observation and maintenance. This layout also optimizes the water-air contact area, improving washing efficiency.

[0032] Furthermore, the end of the washing pipe 7 is connected to the injection pipe 8, the end of the injection pipe 8 is connected to the water distribution discharge pipe 9, and the other end of the injection pipe 8 is interconnected with the outside of the circulating water pool 6, the end of the water distribution discharge pipe 9 is connected to the gas discharge pipe 10, and the bottom of the gas discharge pipe 10 is connected to the fan 11. The injection pipe 8 is provided with a rotatable nozzle group, and the nozzle angle adjustment range is thirty degrees to ninety degrees.

[0033] The combination of the spray pipe 8 and the water separation and discharge pipe 9 constitutes an efficient spray washing system. The spray pipe 8 evenly sprays the washing liquid in the air flow channel, forming a dense water mist barrier that effectively captures dust particles. The provision of the water separation and discharge pipe 9 enables the orderly discharge of the liquid after gas-liquid separation, preventing secondary entrainment. It is particularly suitable for handling sticky dust and can avoid the clogging problem common in traditional single dust removal methods.

[0034] The cooperation between the gas exhaust pipe 10 and the fan 11 forms a stable airflow power system. The reasonable arrangement of the gas exhaust pipe 10 ensures the smooth discharge of the purified gas. The position selection of the fan 11 optimizes the negative pressure distribution of the system, which not only ensures sufficient processing air volume but also avoids airflow short-circuiting, making the entire dust removal process more efficient and stable.

[0035] It should be noted that the innovative design of the rotatable nozzle assembly significantly improves spray coverage and uniformity. The adjustable angle allows the nozzle to be flexibly adjusted to suit different working conditions, ensuring optimal water mist distribution. This is particularly suitable for treating unevenly distributed dust airflows, effectively solving the blind spot problem of fixed nozzles.

[0036] Preferably, the bottom of the cyclone dust collector 3 is connected to a rotary feeder 12, the bottom of the rotary feeder 12 is fixedly connected to the top of the body 1, the outside of the circulating water pool 6 is connected to a sewage pipe 13, and the sewage pipe 13 is connected to the sludge dewatering device.

[0037] Among them, the innovative installation position of the rotary feeder 12 achieves a balance between continuous dust discharge and system sealing. Its connection method with the bottom of the cyclone dust collector 3 ensures the timely discharge of coarse particles and prevents accumulation from affecting the dust removal effect. The fixed connection with the body 1 enhances the overall structural stability and facilitates maintenance operations. It is particularly suitable for handling high-concentration dust conditions; the connection between the sewage pipe 13 and the sludge dewatering device constitutes a complete waste residue treatment system. The reasonable pipe diameter design not only ensures smooth sewage discharge, but also avoids the waste of resources caused by excessive pipe diameter, and realizes the efficient disposal of sludge generated during the dust removal process, solves the pain point of waste residue treatment difficulties in traditional dust removal devices, and significantly reduces the risk of secondary pollution.

[0038] Furthermore, the finished product collector 4 has a built-in pressure difference sensor, which forms a closed-loop control with the circulating water pump 5. The pressure difference alarm threshold is 1500~2000Pa. A pressure regulating valve is provided between the washing pipe 7 and the spray pipe 8 to control the spray pressure.

[0039] Among them, the closed-loop control system of the pressure difference sensor and the circulating water pump 5 realizes intelligent operation. By real-time monitoring of the changes in the filter material resistance, the washing intensity is automatically adjusted, which not only ensures the dust removal efficiency, but also optimizes the energy consumption level, significantly extends the service life of the filter material, and reduces the operation and maintenance costs; the setting of the pressure regulating valve improves the spray pressure precision control system. By adjusting the pressure between the washing pipe 7 and the injection pipe 8, the spraying conditions can be optimized for dust with different characteristics, and the water volume can be accurately controlled, avoiding the problem of excessive or insufficient water volume in traditional spraying systems, saving water resources while ensuring the dust removal effect.

[0040] During use, the dust-laden gas first enters the cyclone dust collector 3 tangentially through the inlet pipe 2, and primary separation of coarse particles is achieved under the action of centrifugal force. The air then rises and enters the finished product collector 4 for fine filtration. At the same time, the circulating water pump 5 transports the washing liquid in the circulating water pool 6 through the washing pipe 7 to the spray pipe 8 with an adjustable angle, forming a uniform water mist for secondary washing of the air flow. The purified gas is discharged from the system by the fan 11 through the gas discharge pipe 10, and the separated dust is continuously discharged through the rotary feeder 12. The washing wastewater is returned to the circulating water pool 6 through the water diversion discharge pipe 9 for recycling, and the deposited sludge is discharged to the dehydration device through the sewage pipe 13. The whole process uses the pressure difference sensor to monitor the filter material resistance in real time, automatically adjust the spray pressure and circulating water volume, and form an efficient and stable dust removal closed-loop system.

[0041] In summary, by integrating the cyclone dust collector 3 and the finished product collector 4 into the same body 1, a compact and efficient composite dust removal system is formed, which realizes the synergistic effect of centrifugal separation of coarse particles and deep filtration of fine dust. The closed-circuit washing system composed of the circulating water pump 5, the circulating water tank 6 and the injection pipe 8, combined with the multi-angle adjustment function of the rotatable nozzle group, significantly improves the uniformity of water mist coverage and the dust collection efficiency. The optimized design of the rotary feeder 12 and the sewage pipe 13 ensures continuous dust discharge and efficient sludge treatment. The intelligent control system of the pressure difference sensor and the pressure regulating valve realizes the precise adjustment of the dust removal parameters. While ensuring excellent dust removal effect, it significantly reduces energy consumption and maintenance costs, and solves the problems of large space occupation, high energy consumption and difficult maintenance of traditional dust removal devices. It is particularly suitable for industrial dust removal needs under high concentration and complex working conditions.

[0042] Example 2

[0043] Reference Figure 2 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that the filtering and washing composite dust removal device adopts a single-machine composite structure.

[0044] Furthermore, the cyclone dust collector 3 and the finished product collector 4 are integrated into the same body 1 to form a compact processing unit. The cyclone dust collector 3 is located upstream of the airflow, achieving efficient separation of coarse particles through centrifugal action, while the finished product collector 4 is located downstream, deeply filtering the remaining fine dust, forming a two-stage dust removal synergy.

[0045] Furthermore, the circulating water tank 6 and the spray pipe 8 form a closed-circuit system. The washing liquid, pressurized by the circulating water pump 5, is then delivered to the spray pipe 8 through the washing pipe 7, achieving uniform spraying and wetting of the dust-laden airflow. The sprayed liquid then flows back to the circulating water tank 6 through the water diversion and discharge pipe 9, completing the recycling of the washing liquid.

[0046] Dust-laden gas enters cyclone dust collector 3 tangentially from inlet pipe 2. Under the action of centrifugal force, large dust particles are thrown toward the wall of the device and settle. The gas then rises into the finished product collector 4 for fine filtration. Residual dust is captured on the surface of the filter material. The purified gas is discharged by fan 11 through gas discharge pipe 10. The separated dust is continuously discharged through rotary feeder 12, and the sludge produced by washing is regularly discharged through sewage pipe 13.

[0047] Furthermore, when the dust-laden gas enters the washing pipe 7, under the pressurized action of the circulating water pump 5, the washing liquid is sprayed out from the rotating nozzle group of the injection pipe 8 at high speed, forming a dense water mist barrier. The high-speed sprayed water flow and the dust-laden gas collide violently and mix turbulently in the tube cavity, generating strong impact and shearing effects, which promote efficient contact between dust particles and liquid droplets. In this process, the gas flow rate is significantly increased, which enhances the turbulence of the gas-liquid two-phase. The dust particles are fully captured by the droplets due to inertial collision, interception effect and diffusion under the wrapping of water mist; at the same time, the negative pressure zone formed by the sprayed water flow further enhances the gas-liquid mixing effect, making sticky dust and fine particles easier to be wetted and agglomerated. This dynamic washing mechanism not only greatly improves the dust removal efficiency, but also effectively avoids the common problems of nozzle blockage and uneven airflow distribution in traditional wet dust removal.

[0048] In summary, structural optimization has achieved an organic combination of cyclone dust removal and filtration washing, which significantly reduces the equipment footprint and energy consumption while ensuring efficient dust removal. It is especially suitable for industrial sites with limited space.

[0049] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0050] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A filtering and washing composite dust removal device, characterized in that: The invention comprises a machine body (1), the top of the machine body (1) is connected to a finished product collector (4), and the outer side of the finished product collector (4) is connected to a cyclone dust collector (3).

2. The filtering and washing composite dust removal device according to claim 1, characterized in that: The outer side of the finished product collector (4) is connected to an inlet pipe (2), and the end of the inlet pipe (2) is connected to a circulating water pump (5).

3. The filtering and washing composite dust removal device according to claim 2, characterized in that: The outer side of the circulating water pump (5) is connected to a circulating water pool (6), and the top of the circulating water pool (6) is connected to a washing pipe (7).

4. The filtering and washing composite dust removal device according to claim 3, characterized in that: The end of the washing pipe (7) is connected to a spray pipe (8), the end of the spray pipe (8) is connected to a water discharge pipe (9), and the other end of the spray pipe (8) is in communication with the outside of the circulating water pool (6).

5. The filtering and washing composite dust removal device according to claim 4, characterized in that: The end of the water discharge pipe (9) is connected to a gas discharge pipe (10), and the bottom of the gas discharge pipe (10) is connected to a fan (11).

6. The filtering and washing composite dust removal device according to claim 5, characterized in that: The bottom of the cyclone dust collector (3) is connected to a rotary feeder (12), and the bottom of the rotary feeder (12) is fixedly connected to the top of the machine body (1).

7. The filtering and washing composite dust removal device according to claim 6, characterized in that: The outer side of the circulating water pool (6) is connected to a sewage pipe (13), and the sewage pipe (13) is connected to a sludge dewatering device.

8. The filtering and washing composite dust removal device according to claim 7, characterized in that: The spray pipe (8) is provided with a rotatable nozzle group, and the nozzle angle adjustment range is 30 degrees to 90 degrees.

9. The filtering and washing composite dust removal device according to claim 8, characterized in that: The finished product collector (4) has a built-in pressure difference sensor, which forms a closed-loop control with the circulating water pump (5), and the pressure difference alarm threshold is 1500-2000Pa.

10. The filtering and washing composite dust removal device according to claim 9, characterized in that: A pressure regulating valve is provided between the washing pipe (7) and the spraying pipe (8) for controlling the spraying pressure.

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