A spiral dust removal device for descending slope

Abstract

The invention relates to a descending spiral dust removal device, comprising a dust extraction component, an air inlet pipe (5-1), a dust collector body (5) and an air outlet pipe (5-7) connected in sequence, the dust collector body (5) is also provided with a spray component and a drain pipe (5-4), the dust collector body (5) comprises an upper cover, a partition layer (5-11) and a spiral descending bottom plate (5-9), the bottom plate height of the spiral descending bottom plate (5-9) gradually decreases from the center in the direction of a spiral line, the partition layer adopts a spiral structure corresponding to the spiral descending bottom plate (5-9), an air inlet connected to the air inlet pipe (5-1) is provided in the middle of the upper cover, the upper cover, the partition layer (5-11) and the spiral descending bottom plate (5-9) are sealed and connected in sequence to form a descending spiral purification channel for dust removal and drainage, and the tail ends of the purification channel are respectively connected to the air outlet pipe (5-7) and the drain pipe (5-4). Compared with the prior art, the invention has the advantages of small size, low cost and good dust removal effect.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal equipment, and in particular to a descending slope spiral dust removal device. Background Art

[0002] In industrial production, a lot of dust will be generated in some occasions. Working in such occasions for a long time will affect the health of workers. At the same time, the direct discharge of dusty air to the outside will also cause environmental pollution, which is particularly prominent in the coal transportation industry. At present, a lot of dust will be generated in the process of coal conveyor belt transportation, especially in the process of transferring from one belt to another. Due to the large amount of coal falling, a lot of dust will be stirred up. The dust will spread in the production workshop, causing great harm to the workers in the operation area. At the same time, a large amount of coal powder in the air will also affect production safety and may cause the risk of explosion at any time. At the same time, because the coal powder is mixed with water and the coal water formed is corrosive, the method of directly adopting dry fog dust suppression on the equipment will not play a fundamental dust removal role. Instead, many coal water droplets will be generated, corroding the surface or overall structure of the equipment. A conveyor belt will be basically corroded in a few years. Therefore, dust removal devices came into being. After the dusty air generated in the workplace is sucked into the dust removal device, the dust in it will be blocked in the dust removal device, and pure air will be discharged to the outside. However, in order to improve the dust removal effect, the existing dust removal device simply increases the length of the dust removal processing channel, resulting in relatively large lateral and vertical dimensions of the device. There are many dust removal locations required in work scenarios such as coal transportation, and it is not suitable for large-volume dust removal devices.

[0003] The existing technology also provides a solution. Chinese patent CN94102556.X proposes a flue gas desulfurization and dust removal device, in which the desulfurization and dust removal chamber includes a spiral plate, the flue gas dehydrator is composed of a plurality of coaxially installed bellows with different diameters, and a water quality stabilization medicine box is installed in the water pipeline supplying the desulfurization and dust removal device. The device has a high desulfurization and dust removal efficiency, a compact structure, is easy to manufacture, has a low cost, does not scale or clog the water, and can be operated continuously for a long time.

[0004] However, there are three problems with the application of this patent:

[0005] First, the desulfurization and dust removal chamber structure of the patent adopts an air intake structure from the outside to the inside, which causes great wind resistance of the whole system and requires a very powerful fan to work. Moreover, after the air passes through the dust removal chamber, a large amount of turbulence will be formed inside the structure, which not only fails to reduce dust, but also stirs up a large amount of mixed liquid to splash out from the outlet;

[0006] Second, the patent leaves an unobstructed airflow channel inside the bellows, which cannot effectively capture water vapor and has a poor demisting effect;

[0007] Third, the spraying method in the patent adopts a large number of partition plates. The final effect of this form of spraying is that columnar liquid falls from the top of the dust collector, which does not fully contact with the dust in the air and cannot effectively solve the dust removal problem. Summary of the invention

[0008] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a descending spiral dust removal device for collecting and purifying dust generated during material transportation, which has the advantages of compact structure and low cost.

[0009] The purpose of the present invention can be achieved by the following technical solutions:

[0010] A descending spiral dust removal device is used for collecting and purifying dust generated during the transportation of coal and other logistics, and comprises a dust extraction assembly, an air inlet pipe, a dust collector body and an air outlet pipe connected in sequence. A spray assembly and a drain pipe are also installed on the dust collector body. The dust collector body comprises an upper cover, a partition and a spiral descending bottom plate. The bottom plate height of the spiral descending bottom plate gradually decreases from the center in the direction of the spiral line. The partition adopts a spiral structure corresponding to the spiral descending bottom plate. An air inlet connected to the air inlet pipe is provided in the middle of the upper cover. The upper cover, the partition and the spiral descending bottom plate are sealed and connected in sequence to form a descending spiral purification channel for dust removal and drainage. The tail ends of the purification channel are respectively connected to the air outlet pipe and the drain pipe.

[0011] Furthermore, the spray assembly includes a spray main pipe, multiple spray branch pipes and atomizing nozzles connected in sequence. The multiple spray branch pipes are evenly distributed above the upper cover toward the center of the upper cover. The spray main pipe is an annular water pipe connected to a water source and is arranged above each spray branch pipe. Multiple atomizing nozzles are arranged at intervals on each spray branch pipe to ensure that atomizing nozzles are arranged on different sections of the purification channel through which each spray branch pipe passes.

[0012] The dust extraction component comprises a dust extraction fan and a dust collecting pipe. The dust collecting pipe is seamlessly connected with the air inlet pipe. The dust extraction fan introduces the dust into the air inlet pipe through the dust collecting pipe. After the dust enters the dust collector body, it runs along the purification channel. The atomizing nozzle above the purification channel continuously sprays water mist downward, and the water mist contacts the dust. Since the spiral descending bottom plate adopts a descending spiral structure, the sewage after spraying flows from top to bottom and from the inside to the outside from the tail end of the purification channel. The sewage is concentrated under the obstruction of the outlet water retaining block and is collected and reused through the dust collector drain pipe, which is energy-saving and environmentally friendly. After the descending spiral dust removal device finishes working, the spray component is forced to be opened to achieve self-cleaning.

[0013] Furthermore, a demister module is arranged between the tail end of the purification channel and the air outlet pipe, and an air flow distribution plate is provided at the connection between the demister module and the tail end of the purification channel, so that the water vapor coming out of the tail end of the purification channel flows evenly into the demister module, and the drain pipe is vertically arranged at the lower side of the port at the tail end of the purification channel.

[0014] Furthermore, the demister module includes a demister pipe connected to the tail end of the purification channel and a demister in the demister pipe. The demister includes a circular tube array composed of a plurality of circular tubes vertically and evenly arranged in the demister pipe. Water vapor hits the circular tubes, condenses into water droplets and then remains along the circular tubes.

[0015] Furthermore, the air outlet pipe is bent upward and the air outlet of the air outlet pipe is vertically upward to prevent water flowing out of the purification channel from flowing out of the air outlet. At the same time, a right terrace-shaped air outlet pipe protective cover is provided at the air outlet to prevent unprocessed dust and water mist mixed in the wind from splashing out of the air outlet.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention sequentially seals and connects the upper cover, the interlayer and the spiral bottom plate to form a single-inlet and single-outlet spiral purification channel. The airflow is transmitted from the center along the spiral purification channel to the periphery, without generating excess wind resistance and with low power consumption. The spiral purification channel has a large length in a limited space, a compact structure, and saves space. Moreover, when the airflow flows from the inside to the outside, the space of the purification channel becomes larger and larger. The large air volume and high wind speed at the air inlet gradually become small air volume and low wind speed, which can increase the contact time between dust and water and achieve better dust removal effect. At the same time, the bottom plate height of the spiral descending bottom plate gradually decreases from the center in the direction of the spiral line to form a descending slope, and the sewage flows out from top to bottom, effectively solving the drainage and self-cleaning problems.

[0018] (2) The present invention is provided with a demister module between the tail end of the purification channel and the air outlet pipe. The demister module includes a demister pipe connected to the tail end of the purification channel and a tubular demister in the demister pipe. The tubular demister includes a circular tube array composed of a plurality of circular tubes vertically and evenly arranged in the demister pipe. Under the centrifugal force, impact and other effects of the tubular demister, the water mist condenses into water droplets and then stays along the circular tubes. At the same time, the present invention is provided with an air flow uniform distribution plate at the connection between the demister module and the tail end of the purification channel, so that the water vapor coming out of the tail end of the purification channel flows evenly into the demister module, thereby comprehensively improving the demister effect of the purified airflow;

[0019] (3) The present invention evenly arranges multiple spray branch pipes above the upper cover toward the center of the upper cover, and the annular spray main pipe connected to the water source is connected to each spray branch pipe respectively. Multiple atomizing nozzles are arranged at intervals on each spray branch pipe to ensure that atomizing nozzles are arranged on different sections of the purification channel through which each spray branch pipe passes, so that each section of the spiral purification channel is provided with sufficient nozzles, and the structure is compact. At the same time, the nozzle is an atomizing nozzle, which can cover all areas in the purification channel, so that water and dust are fully contacted, and dust removal is achieved throughout the process, and the overall dust removal effect is good;

[0020] (4) The present invention provides a vertical drain pipe at the lower side of the tail end port of the purification channel. The sewage is concentrated under the blockage of the water retaining block at the tail end of the purification channel and discharged through the dust collector drain pipe. The sewage can be recycled and reused after treatment, thus saving resources.

[0021] (5) The present invention designs the air outlet duct to be an upwardly bent structure, and the air outlet of the air outlet duct is vertically upward, which can prevent water flowing out of the purification channel from flowing out of the air outlet. At the same time, a right step-shaped air outlet duct protective cover is provided at the air outlet to prevent unprocessed dust and water mist mixed in the wind from splashing out of the air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a working schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the device;

[0024] Figure 3 is a cross-sectional view of the device;

[0025] Figure 4 A three-dimensional diagram of the internal structure of the device;

[0026] Figure 5 A top view of the internal structure of the device;

[0027] Figure 6 Schematic diagram of the interlayer structure.

[0028] Description of the numbers in the figure:

[0029] 1. Upper belt conveyor, 2. Dropping barrel, 3. Material guide trough, 4. Dust collecting pipe, 5. Dust collector body, 6. Lower belt conveyor, 7. Dust exhaust fan, 5-1. Air inlet pipe, 5-2. Spray main pipe, 5-3. Spray branch pipe, 5-4. Drain pipe, 5-5. Air flow distribution plate, 5-6. Demisting assembly, 5-6-1. Demister, 5-7. Air outlet pipe, 5-8. Air outlet pipe protective cover, 5-9. Spiral descending bottom plate, 5-10. Atomizing nozzle, 5-11. Partition. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0031] A descending spiral dust removal device, such as Figure 1 , used to collect dust generated during coal transportation. The coal is transported on the upper belt conveyor 1 and falls to the tail of the lower belt conveyor 6 through the drop barrel 2. The coal is gathered and shaped through the guide trough 3 to prevent coal from overflowing. A large amount of dust will be generated in the process of coal being transferred from the upper belt conveyor 1 to the lower belt conveyor 6.

[0032] like Figure 2 and Figure 6 The descending spiral dust removal device includes a dust extraction component, an air inlet pipe 5-1, a dust collector body 5 and an air outlet pipe 5-7 connected in sequence. A spray component and a drain pipe 5-4 are also installed on the dust collector body 5. The dust collector body 5 includes an upper cover, a partition 5-11 and a spiral descending bottom plate 5-9. Figure 3 The bottom plate height of the spiral descending bottom plate 5-9 gradually decreases from the center in the direction of the spiral line. The partition layer adopts a spiral structure corresponding to the spiral descending bottom plate 5-9. An air inlet connected to the air inlet pipe 5-1 is provided in the middle of the upper cover. The upper cover, the partition layer 5-11 and the spiral descending bottom plate 5-9 are sealed and connected in sequence to form a descending spiral purification channel for dust removal and drainage. The tail ends of the purification channel are respectively connected to the air outlet pipe 5-7 and the drainage pipe 5-4. One end of the dust collecting pipe 4 is seamlessly connected to the air inlet pipe 5-1, and the other end faces the material guide trough 3. The dust exhaust fan 7 draws the dust into the dust collector body 5 through the dust collecting pipe 4.

[0033] like Figure 6 The interlayer 5-11 adopts a three-layer spiral structure, with a starting radius of 250mm, an end radius of 1000mm, and a height of 1000mm. The spiral unfolded length of the interlayer 5-11 is 11.6 meters.

[0034] like Figure 4 and Figure 5 The spray assembly includes a spray main pipe 5-2, a plurality of spray branch pipes 5-3 and an atomizing nozzle 5-10 which are connected in sequence. The plurality of spray branch pipes 5-3 are evenly distributed above the upper cover toward the center of the upper cover. The spray main pipe 5-2 is an annular water pipe connected to a water source and is arranged above each spray branch pipe. A plurality of atomizing nozzles 5-10 are arranged at intervals on each spray branch pipe 5-3 to ensure that atomizing nozzles 5-10 are arranged above different sections of the purification channel through which each spray branch pipe passes.

[0035] A demister module 5-6 is arranged between the tail end of the purification channel and the air outlet pipe 5-7. The demister module 5-6 includes a demister pipe connected to the tail end of the purification channel and a demister 5-6-1 in the demister pipe. The demister 5-6-1 includes a circular tube array composed of a plurality of circular tubes vertically and evenly arranged in the demister pipe. An air flow distribution plate 5-5 is provided at the connection between the demister module 5-6 and the tail end of the purification channel. The drain pipe 5-4 is vertically arranged at the lower side of the port at the tail end of the purification channel.

[0036] The air outlet pipe 5-7 is bent upward and the air outlet of the air outlet pipe 5-7 is vertically upward to prevent water flowing out of the purification channel from flowing out of the air outlet. A positive terrace-shaped air outlet pipe protective cover 5-8 is provided at the air outlet to prevent the dust and water mist mixed in the wind that are not completely processed from splashing at the air outlet.

[0037] The dust moves along the purification channel with a spiral structure. The atomizing nozzles 5-10 arranged at the top of the entire purification channel continuously spray water mist downwards. Dust forms sewage after contacting the water mist. The sprayed sewage flows out from the outlet of the purification channel from top to bottom and from inside to outside along the descending spiral purification channel. Under the obstruction of the outlet water retaining block, it is concentrated and collected through the discharge pipe. The collected sewage is discharged to the belt conveyor 6 below or directly discharged to the ditch for centralized collection and treatment. The treated water source can be repeatedly recycled as spray water.

[0038] After the dust removal is completed, the forced spray component needs to be turned on for 2 minutes to achieve internal self-cleaning of the dust removal device, eliminating the need for manual maintenance.

[0039] The present embodiment proposes a descending spiral dust removal device, in which the upper cover, the partition layer 5-11 and the spiral descending bottom plate 5-9 of the device are sealed and connected in sequence to form a descending spiral purification channel for dust removal and drainage, which effectively solves the dust problem generated by the conveyor belt during the transportation process and reduces the pollution to the environment. At the same time, the purification channel of the dust removal device with a radius of 1 meter and a height of 1 meter is as long as 11.6 meters, which is convenient for the environment where a large dust collector cannot be designed on site. It is used for dust removal in the entire transportation process and has the advantages of compact structure, good dust removal effect, simple structure and easy manufacturing.

[0040] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A descending spiral dust removal device, comprising a dust extraction assembly, an air inlet pipe (5-1), a dust collector body (5) and an air outlet pipe (5-7) connected in sequence, wherein a spray assembly and a drain pipe (5-4) are also installed on the dust collector body (5), characterized in that: The dust collector body (5) comprises an upper cover, a partition (5-11) and a spiral descending bottom plate (5-9); the bottom plate height of the spiral descending bottom plate (5-9) gradually decreases from the center in the direction of a spiral line; the partition adopts a spiral structure corresponding to the spiral descending bottom plate (5-9); an air inlet connected to an air inlet pipe (5-1) is provided in the middle of the upper cover; the upper cover, the partition (5-11) and the spiral descending bottom plate (5-9) are sealed and connected in sequence to form a descending spiral purification channel for dust removal and drainage; the tail end of the purification channel is respectively connected to the air outlet pipe (5-7) and the drainage pipe (5-4); The spray assembly comprises a spray main pipe (5-2), a plurality of spray branch pipes (5-3) and an atomizing nozzle (5-10) which are connected in sequence. The plurality of spray branch pipes (5-3) are evenly distributed above the upper cover toward the center of the upper cover, the spray main pipe (5-2) is an annular water pipe connected to a water source, and a plurality of atomizing nozzles (5-10) are arranged at intervals on each spray branch pipe (5-3). A demister module (5-6) is provided between the tail end of the purification channel and the air outlet pipe (5-7).

2. A descending spiral dust removal device according to claim 1, characterized in that: An airflow distribution plate (5-5) is provided at the connection between the demister module (5-6) and the tail end of the purification channel.

3. The descending spiral dust removal device according to claim 1, characterized in that: The demister module (5-6) comprises a demister pipe connected to the rear end of the purification channel and a demister (5-6-1).

4. A descending spiral dust removal device according to claim 3, characterized in that: The demister (5-6-1) comprises a circular tube array consisting of a plurality of circular tubes vertically and evenly arranged in a demister pipe.

5. The descending spiral dust removal device according to claim 1, characterized in that: The air outlet pipe (5-7) is bent upwards and the air outlet of the air outlet pipe (5-7) is vertically facing upwards.

6. A descending spiral dust removal device according to claim 5, characterized in that: A right-stepped terrace-shaped air outlet pipe protective cover (5-8) is provided at the air outlet.

7. The descending spiral dust removal device according to claim 1, characterized in that: The drainage pipe (5-4) is vertically arranged at the lower side of the tail end port of the purification channel.

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