CN219836291U - A dust reduction and recycling system for ash storage tanks - Google Patents

Abstract

The utility model relates to the technical field of building construction environment management, and in particular to an ash storage tank dust reduction and recycling system. The utility model's ash storage tank dust reduction recycling system includes a recycling container, an atomizing spray mechanism and a liquid delivery device. The upper end of the recycling container has an exhaust port, a filter structure is provided in the exhaust port, and the side wall of the recycling container is provided with an airflow inlet. The air flow inlet is connected to the exhaust hole of the ash storage tank through a pipeline. The lower part of the recovery container is provided with a slurry outlet. The liquid delivery device is connected to the atomizing spray mechanism through the pipeline. The atomizing spray mechanism is installed in the recovery container and is located at the filter between structure and airflow inlet. Advantages: The structural design is simple and reasonable, and it can effectively reduce and recycle the dust gas overflowing from the exhaust hole of the ash storage tank, which fundamentally reduces the pollution of dust to the environment and more effectively protects the on-site ecological environment and on-site Construction is safer, dust reduction, pollution reduction, cost reduction and efficiency increase are significant.

Description

A dust reduction and recycling system for ash storage tanks

Technical field

The utility model relates to the technical field of building construction environment management, in particular to an ash storage tank dust reduction and recycling system.

Background technique

In the 1980s, foreign dust removal technology and equipment developed rapidly, especially in developed countries, which researched key technologies and equipment for mine dust removal earlier. The United States invented the wet small cyclone dust removal process, the United Kingdom developed the wet washing, filtration and dust removal process, Russia developed the wet cyclone vacuum pump process, and Germany invented the dry bag dust removal process. At present, coal seam water injection, spray dust suppression, wet dust collector dust removal and foam dust suppression are mainly used in mine dust control in China. Coal seam water injection and spray dust reduction consume a lot of water, have low dust reduction efficiency, and cause serious secondary pollution; the foam dust suppression method has complex processes and expensive chemicals, making it difficult to popularize.

According to estimates in 2010, the number of people who die from pneumoconiosis every year in my country's coal industry has exceeded twice that of work safety accidents. In July 2010, the State Administration of Work Safety and the State Administration of Coal Mine Work Safety issued the "Regulations on the Prevention and Control of Occupational Hazards in Coal Mine Workplaces (Trial)", which formulated mandatory measures to deal with accidents if the dust concentration exceeds the standard, marking the end of the dust hazards in coal mines. Attaching great importance to and the significant demand for dust control, and putting forward requirements for the gradual implementation of dust removal.

Coal occupies an extremely important position in my country's energy structure. The large-scale mining of minable coal seams and the destructive and predatory mining of surrounding small coal mines have produced a large amount of coal gangue, and the open-air stacking of gangue has caused serious pollution and damage to the surrounding atmosphere, soil, and water environment. As the country gradually advances the work in the coal industry, in order to thoroughly implement the relevant national ecological civilization ideas and uphold the concepts of green, harmonious, sustainable and high-quality development, most coal mining areas are carrying out regional management of the mining environment and ecological restoration. The backfill materials used for treatment are basically coal gangue, fly ash, cement and other auxiliary materials. The current market has dust suppression devices for discharging materials from ash storage tanks and mixing auxiliary materials. There is no supporting fixed equipment for dust suppression of trace amounts of dust, and there are still imperfections in cost, safety and subsequent maintenance.

Based on this, it is necessary to develop a device system dedicated to dust control in the exhaust holes of ash storage tanks.

Utility model content

The technical problem to be solved by this utility model is to provide a dust reduction and recycling system for ash storage tanks, which effectively overcomes the defects of the existing technology.

The technical scheme of this utility model to solve the above technical problems is as follows:

A dust reduction and recycling system for ash storage tanks, including a recycling container, an atomizing spray mechanism and a liquid delivery device. The upper end of the recycling container has an exhaust port, the exhaust port is provided with a filter structure, and the side wall of the recycling container is provided with an air flow The air flow inlet is connected to the exhaust hole of the ash storage tank through a pipeline. The lower part of the above-mentioned recovery container is provided with a slurry outlet. The above-mentioned liquid transport device is connected to the above-mentioned atomizing spray mechanism through a pipeline. The above-mentioned atomizing spray mechanism is installed on the above-mentioned In the recovery container, it is located between the above filter structure and the air flow inlet.

On the basis of the above technical solution, the present utility model can also make the following improvements.

Further, the above-mentioned liquid transport device is a water pump, the liquid inlet end of the water pump is connected to the water source through a pipeline, and the liquid outlet end is connected to the above-mentioned atomizing spray mechanism through a pipeline.

Furthermore, the above-mentioned atomizing spray mechanism includes a spray pipe and a plurality of atomizing nozzles. The above-mentioned spray pipe is an annular pipe and is horizontally fixed on the inner wall of the above-mentioned recovery container. The plurality of above-mentioned atomizing nozzles are distributed at intervals along the circumference. The inner sides of the above-mentioned spray pipes are respectively connected and communicated with the above-mentioned spray pipes, and the spray directions of the plurality of above-mentioned atomizing nozzles are all toward the center of the above-mentioned recovery container.

Furthermore, the above-mentioned atomizing spray mechanism is provided with multiple groups, and are spaced up and down.

Further, the above-mentioned filtering structure includes a filter net.

Furthermore, the above-mentioned filter is a PU sponge filter, and is provided with multiple layers at intervals up and down.

Furthermore, it also includes an automatic spray control system. The automatic spray control system includes a sensing device and a controller. The sensing device is installed in the air flow inlet for sensing dust concentration or air flow. The controller is connected to the sensing device respectively. Connected to liquid delivery device.

Furthermore, the above-mentioned sensing device is an air flow sensor or a dust concentration sensor.

Further, the above-mentioned slurry outlet is provided with a valve.

Furthermore, the valve is an electronically controlled valve, a liquid level sensor is provided on the inner wall of the recovery container, the liquid level sensor container is located below the air flow inlet, and the liquid level sensor and the valve are respectively connected to the controller.

The beneficial effects of the utility model are: the structural design is simple and reasonable, and it can effectively reduce dust and recycle the dust gas overflowing from the exhaust hole of the ash storage tank, which fundamentally reduces the pollution of dust to the environment and more effectively Protect the on-site ecological environment, make on-site construction safer, reduce dust and pollution, reduce costs and increase efficiency.

Description of the drawings

Figure 1 is a schematic structural diagram of the utility model's ash storage tank dust reduction and recycling system when used in conjunction with the ash storage tank;

Figure 2 is a schematic structural diagram of the dust reduction and recycling system for ash storage tanks of the present invention.

In the drawings, the parts represented by each number are listed as follows:

1. Recovery container; 2. Atomizing spray mechanism; 3. Liquid delivery device; 4. Ash storage tank; 11. Filter structure; 12. Air flow inlet; 13. Slurry outlet; 21. Spray pipe; 22. Mist Chemical nozzle; 51. Induction device.

Detailed ways

The principles and features of the present utility model are described below with reference to the accompanying drawings. The examples cited are only used to explain the utility model and are not intended to limit the scope of the utility model.

Embodiment: As shown in Figures 1 and 2, the ash storage tank dust reduction recycling system of this embodiment includes a recycling container 1, an atomizing spray mechanism 2 and a liquid delivery device 3. The upper end of the recycling container 1 has an exhaust port. A filter structure 11 is provided in the exhaust port. An airflow inlet 12 is provided on the side wall of the recovery container 1. The airflow inlet 12 is connected to the exhaust hole of the ash storage tank 4 through a pipeline. A slurry outlet 13 is provided in the lower part of the recovery container 1. The above-mentioned liquid delivery device 3 is connected to the above-mentioned atomizing spray mechanism 2 through a pipeline (using a 10mm high-pressure plastic water pipe). The above-mentioned atomizing spray mechanism 2 is installed in the above-mentioned recovery container 1 and is located between the above-mentioned filter structure 11 and the air flow inlet 12 between.

The usage process is as follows:

When in use, the air flow inlet 12 and the exhaust hole of the ash storage tank 4 are connected and communicated with each other through pipelines. When air and ash are discharged from the exhaust hole of the ash storage tank 4 (that is, to the output in the ash storage tank 4 Ash process), the dust gas will enter the air flow inlet 12 through the pipeline, and then enter the inside of the recovery container 1. Then, the liquid delivery device 3 is started to deliver liquid (water) to the atomizing spray mechanism 2, and the atomizing spray mechanism 2 will return to the recycling container. The atomized gas is sprayed out from the inside of the container 1, and the atomized gas "agglomerates" with the dust particles entering the interior of the recycling container 1. Most of the dust and moisture mixture falls downward, and the remaining air flows upward through the exhaust pipe at the upper part of the recycling container 1. The air is discharged from the air port, and is automatically filtered by the filter structure 11 while being discharged. The air finally discharged to the outside is managed and purified, and the dust is basically completely treated. After the ash transport is completed, the liquid conveying device 3 stops running, and the dust particles and moisture are collected in the recovery container. The cement slurry formed in 1 is then accumulated to a certain depth and then discharged through the slurry outlet 13 and recycled.

As a preferred embodiment, the liquid delivery device 3 is a water pump, the liquid inlet end of the water pump is connected to the water source through a pipeline, and the liquid outlet end is connected to the atomizing spray mechanism 2 through a pipeline.

In the above embodiment, the liquid delivery device 3 uses a water pump of the existing technology (a ground-level bidirectional centrifugal pump is used on site, which can be injected or pumped). Specifically, a high-pressure water pump can be used to extract and transport water from the water source to the atomizing spray mechanism 2 , and form water mist in the recovery container 1 to prevent dust gas from flowing upward and escaping. The specific model of the water pump can be flexibly and reasonably selected according to the actual situation, and will not be described in detail here.

In this embodiment, the recycling container 1 can be a cylindrical container. In the actual application process, the recycling container 1 can be made from waste oil barrels on site, so that the materials can be processed on-site at the construction site, which is simple and easy to implement. .

As a preferred embodiment, the above-mentioned atomizing spray mechanism 2 includes a spray pipe 21 and a plurality of atomizing spray heads 22. The above-mentioned spray pipe 21 is an annular pipe and is horizontally fixed on the inner wall of the above-mentioned recovery container 1. The above-mentioned atomizing nozzles 22 are distributed in the inner side of the above-mentioned spray pipe 21 at intervals along the circumferential direction, and are connected and communicated with the above-mentioned spray pipe 21 respectively. The spray directions of the plurality of above-mentioned atomizing nozzles 22 are all towards the above-mentioned recovery container 1 at the center.

In the above embodiment, the liquid transport device 3 transports high-pressure liquid (water) to the spray pipe 21, and sprays water mist synchronously through multiple atomizing nozzles 22. The water mist is concentrated toward the center of the recovery container 1, and the direction can be slightly tilted toward When the recycling container 1 is filled with dust gas, the water mist can condense on the surface of the dust particles, causing them to "agglomerate" and sink to the bottom of the recycling container 1, gradually forming cement slurry. The entire atomizing spray mechanism 2 is simple in design, easy to use, and has good dust reduction effect.

In this embodiment, the atomizing nozzle 22 is a product of the existing technology. During actual use, an adapted model can be flexibly selected according to on-site requirements.

In this embodiment, the atomizing nozzles 22 are installed every 10 cm. The on-site recycling container 1 uses a 220L waste oil drum, and approximately 22 sprinkler heads can be installed on each sprinkler pipe 21.

As a preferred embodiment, the above-mentioned atomizing spray mechanism 2 is provided with multiple groups and are spaced up and down.

In the above embodiment, multiple sets of atomizing spray mechanisms 2 are arranged at intervals up and down to achieve multi-layer "dust-reducing water mist", thereby making the treatment of dust particles more thorough and more effective.

What needs to be supplemented is that the atomizing nozzles 22 of the upper and lower groups of atomizing spray mechanisms 2 are distributed at staggered intervals in the ring direction.

In this embodiment, the above-mentioned filtering structure 11 includes a filter net. Using the filter screen of the existing technology, after the dust gas is atomized and dust-reduced in the recovery container 1, the air flow will be discharged upward through the exhaust port on the upper part of the recovery container 1. During the discharge process, it will be intercepted by the filter screen and the dust inside the air flow will be filtered out again. , so that the dust content of the air flow discharged from the outside of the recycling container 1 is very low, which complies with environmental protection standards.

In this embodiment, the above-mentioned filter is a PU sponge filter (PU honeycomb sponge filter), with multiple layers spaced up and down. The filtering effect is better, that is, the gas purification effect is better.

As a preferred embodiment, it also includes an automatic spray control system. The automatic spray control system includes a sensing device 51 and a controller. The sensing device 51 is installed in the air flow inlet 12 for sensing dust concentration or air flow. , the above-mentioned controller is connected to the above-mentioned sensing device 51 and the liquid delivery device 3 respectively.

In the above embodiment, when the ash is transported into the ash storage tank 4 on site, the dust gas enters the interior of the recovery container 1 through the air flow inlet 12. This process will be sensed by the sensing device 51, thereby feeding back to the controller, and the controller will control The liquid conveying device 3 starts to operate and delivers liquid to the atomizing spray mechanism 2 to form water mist for dust reduction. The entire atomization and dust reduction process starts and stops automatically, which is very convenient. Save labor costs.

In this embodiment, the controller can be a traditional PLC controller. When used, the adaptive model can be flexibly and reasonably selected according to the actual usage conditions.

In this embodiment, the above-mentioned sensing device 51 adopts an air flow sensor or a dust concentration sensor. The airflow sensor can sense the flow (flow rate) of gas in the airflow inlet 12, and the controller issues a control instruction based on this signal to make the liquid delivery device 3 operate; the dust concentration sensor directly detects the dust concentration information in the airflow inlet 12, and the controller The operation of the liquid delivery device 3 is controlled based on this information, that is, the atomization spray of the atomization spray mechanism 2 is controlled.

In this embodiment, the above-mentioned slurry outlet 13 is provided with a valve, which can be flexibly opened and closed to achieve the purpose of flexibly discharging slurry.

In this embodiment, the airflow inlet 12 extends inward into the recovery container 1 , and the sensing device 51 is installed in a section extending inwardly of the airflow inlet 12 , and is installed approximately 10cm from the airflow inlet 12 extending into the interior of the recovery container 1 .

As a preferred embodiment, the valve is an electronically controlled valve. A liquid level sensor is provided on the inner wall of the recovery container 1. The liquid level sensor container is located below the air flow inlet 12. The liquid level sensor and the valve are respectively connected to the controller. .

In the above embodiment, a liquid level sensor is configured on the inner wall of the recovery container 1 to detect the liquid level of the cement slurry inside. When the liquid level reaches the position of the liquid level sensor, it is detected to be at (high level), and at the same time, the liquid level is sent to the controller. Based on the liquid level information, the controller can control the opening of the valve and perform timely discharge of slurry. The entire process can be automated and does not require special supervision, thus saving labor costs.

The above-mentioned liquid level sensor is a product of the existing technology. In actual use, it is enough to choose the appropriate model flexibly and reasonably, and will not be described in detail here.

The entire system has the following advantages:

1) The use of this device fundamentally reduces the environmental pollution caused by dust, more effectively protects the on-site ecological environment, makes on-site construction safer, and has significant effects on dust reduction, pollution reduction, cost reduction and efficiency improvement. 2) Since it is more convenient to use portable disassembly, it reduces the difficulty of future repair and maintenance. 3) It can be processed locally at the construction site, which is simple and easy. 4) It can be quickly installed and put into production, saving costs and improving work efficiency.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis" The directions or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the device referred to. Or elements must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limitations on the invention.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

In this utility model, unless otherwise expressly stipulated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements, unless otherwise Clear limits. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly stipulated and limited, the first feature "on" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in direct contact through an intermediate medium. indirect contact. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "an example," "specific examples," or "some examples" or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are illustrative and cannot be construed as limitations of the present invention. Those of ordinary skill in the art are within the scope of the present invention. Changes, modifications, substitutions and variations may be made to the above-described embodiments.

Claims (10)

1. The utility model provides a dust storage jar dust fall recycle system which characterized in that: including recovery container (1), atomizing spraying mechanism (2) and liquid conveyor (3), recovery container (1) upper end has the gas vent, be equipped with filtration (11) in the gas vent, recovery container (1) lateral wall is equipped with air inlet (12), and this air inlet (12) pass through the exhaust hole of pipeline connection ash storage tank (4), the lower part of recovery container (1) is equipped with out thick liquid mouth (13), liquid conveyor (3) pass through the pipeline connection atomizing spraying mechanism (2), atomizing spraying mechanism (2) are installed in recovery container (1), and be located between filtration (11) and air inflow mouth (12).

2. The ash storage tank dust fall recycling system according to claim 1, wherein: the liquid conveying device (3) is a water pump, the liquid inlet end of the water pump is connected with a water source through a pipeline, and the liquid outlet end of the water pump is connected with the atomizing spray mechanism (2) through a pipeline.

3. The ash storage tank dust fall recycling system according to claim 2, wherein: the atomization spraying mechanism (2) comprises a spraying pipe (21) and a plurality of atomization spraying nozzles (22), wherein the spraying pipe (21) is an annular pipe and horizontally fixed on the inner wall of the recovery container (1), the atomization spraying nozzles (22) are distributed on the inner side of the spraying pipe (21) at intervals along the annular direction and are respectively connected and communicated with the spraying pipe (21), and the spraying directions of the atomization spraying nozzles (22) face the center of the recovery container (1).

4. A dust fall recycling system for a dust storage tank according to claim 3, wherein: the atomizing spraying mechanism (2) is provided with a plurality of groups and is distributed at intervals up and down.

5. The ash storage tank dust fall recycling system according to claim 1, wherein: the filter structure (11) comprises a filter screen.

6. The ash storage tank dust fall recycling system according to claim 5, wherein: the filter screen is a PU sponge filter screen, and a plurality of layers are arranged at intervals up and down.

7. The ash storage tank dust fall recycling system according to any one of claims 2 to 6, wherein: the automatic spraying control system comprises a sensing device (51) and a controller, wherein the sensing device (51) is arranged in the air flow inlet (12) and is used for sensing dust concentration or air flow, and the controller is respectively connected with the sensing device (51) and the liquid conveying device (3).

8. The ash storage tank dust fall recycling system according to claim 7, wherein: the sensing device (51) is an airflow sensor or a dust concentration sensor.

9. The ash storage tank dust fall recycling system according to claim 7, wherein: the slurry outlet (13) is provided with a valve.

10. The ash storage tank dust fall recycling system according to claim 9, wherein: the valve is an electric control valve, a liquid level sensor is arranged on the inner wall of the recovery container (1), the liquid level sensor container is positioned below the air flow inlet (12), and the liquid level sensor and the valve are respectively connected with the controller.