Distributed ash removal system

Abstract

The invention discloses a distributed ash removal system which comprises multiple groups of ash removal subsystems and a centralized ash bin, and the ash removal subsystems are arranged in parallel; and each group of ash removal subsystem comprises a dust collection assembly and an ash conveying assembly. When the movable single-point negative-pressure dust collector is used, dust is sucked into the negative-pressure dust collection pipeline communicated with the dust collection tools under the action of negative pressure through the dust collection tools, the negative-pressure dust collection pipeline can be connected with a plurality of dust collection tools, multi-point adsorption is achieved, and the problem that a movable single-point negative-pressure dust collector is poor in use convenience is solved. Dust-containing air in the negative-pressure dust collection pipeline is purified by the dust filtering unit and then discharged by the negative-pressure power unit, and dust collected by the dust filtering unit falls into a dust hopper on the lower portion of the dust filtering unit, is input into the positive-pressure dust conveying branch pipeline and finally falls into the centralized dust bin after being subjected to pressure relief through the bin top dust discharging mechanism, so that centralized treatment is facilitated. According to the distributed ash removal system, a plurality of groups of ash removal subsystems can be flexibly arranged according to the on-site floor distribution of a production workshop and the area of each layer of platform.

Description

Technical Field

[0001] The invention relates to the technical field of dust processing equipment and its peripheral supporting facilities, and in particular to a distributed dust cleaning system. Background Art

[0002] In the production process of industrial and mining enterprises, it is inevitable to generate unorganized dust emissions. These unorganized dusts accumulate on the ground after escaping, floating, and settling, causing pollution to the workplace. Some flammable and explosive dusts are also prone to cause production safety accidents. Therefore, regular and irregular cleaning operations are required. For processes with serious dust escape during the production process, in order to avoid sweeping the ground dust, which greatly infringes on the time and energy of production workers, many companies set up cleaning positions and assign a large number of cleaning personnel, resulting in a significant increase in personnel costs. There are three main ways of conventional cleaning: one is to sweep with a broom, which is not very clean. The dust level is high and secondary dust is often generated during cleaning, which not only pollutes the environment but also affects the health of workers. In addition, the accumulated dust after cleaning is not easy to clean and needs special transportation. Another method is to use compressed air blowing, which has a better cleaning effect than brooming, but the secondary dust and the adverse consequences are more serious. Currently, enterprises that have passed the ultra-low emission acceptance inspection basically no longer use it. Or the method of flushing the floor with water has a better cleaning cleanliness, but there are two secondary pollutants, dust mud and flushing sewage. The treatment of secondary pollutants often requires the addition of treatment process and corresponding facility configuration, which leads to a significant increase in the environmental protection cost and water consumption cost of the production process.

[0003] According to the above-mentioned practical problems of floor dust cleaning, a negative pressure vacuum cleaner has been developed to clean and sweep the dust on the floor, which solves the above-mentioned shortcomings while improving the cleaning efficiency. Currently, there are mainly two forms of negative pressure vacuum cleaners: one is a mobile single-point negative pressure vacuum cleaner, that is, a single-point negative pressure vacuum cleaner placed on a trolley, which is basically the same in appearance and structure as the floor vacuum cleaner used in shopping malls, but the configuration parameters are relatively higher. The operator pushes the vacuum cleaner to the dusty place on the floor and operates the suction rake equipped with the vacuum cleaner to vacuum the dust on the floor. The accumulated dust is sucked into the suction rake and enters the vacuum cleaner through a hose connected to the vacuum cleaner. When the ash bucket of the vacuum cleaner is full, the vacuuming operation is stopped, and the accumulated dust in the ash bucket is transported to a recycling point and then the vacuuming operation is continued. The mobile single-point negative pressure vacuum cleaner has the following disadvantages: in order to be able to be manually pushed, the mobile single-point negative pressure vacuum cleaner cannot be made too heavy as a whole, so the ash bucket is also relatively small, generally only a few dozen liters of ash storage capacity. For production workshops with serious dust leakage, the frequency of dumping the ash bucket is too high, and some production workshops are large and the cleaning point is far away from the ash bucket dust recovery point, and the labor intensity of the cleaning workers is too high; at the same time, the mobile single-point negative pressure vacuum cleaner can only be pushed on the platform floor, and cannot be used in workshops with inclined floors such as belt conveyor corridors; in addition, the high-pressure fan in the mobile single-point negative pressure vacuum cleaner needs to be connected to the power supply connection point of the production workshop, which is often not fully met. The above disadvantages have led to the failure of mobile single-point negative pressure vacuum cleaners to be widely used in large industrial and mining enterprises.

[0004] Another form of negative pressure vacuum cleaner is the pipe network central vacuum cleaner, that is, a vacuum pipe is laid on each platform of the production workshop, and a quick connector is set every 15 to 20 meters. The vacuum pipes on each floor are gathered into the main vacuum pipe and connected to the vacuum main unit. The vacuum main unit is composed of a dust filtration unit, a dust conveying unit and a vacuum power unit. The vacuum power unit ensures that the entire vacuum pipe network is in a high negative pressure state. Each floor of the production workshop is equipped with a dust cleaning device, which is composed of a suction rake and a hose. During cleaning operations, workers connect and fix the hose to the quick connector and turn on the quick connector switch to operate the suction rake to vacuum the dust on the ground. The dust on the ground is sucked into the suction rake through the hose into the vacuum pipe and finally into the vacuum main unit. The air purified by the dust filtration unit is discharged, and the collected dust is sent to the recycling point through the dust conveying unit. The pipe network central vacuum cleaner has the following disadvantages: the pipe network central vacuum cleaner adopts a pipe network to arrange the dust collection in a centralized manner, the large number of pipe network branches leads to uneven distribution of air volume and air pressure, the large number of pipe dust collection ports leads to increased air leakage, and the long length of the branch pipe leads to large resistance along the way and local resistance. In order to overcome the above problems, it is necessary to configure a large air volume and high negative pressure vacuum host equipment. Such a configuration not only has high system power consumption, but also high investment and operation and maintenance costs; however, the large air volume and high negative pressure vacuum host often has a large equipment size, resulting in high requirements for installation space; and large air volume and high negative pressure vacuum equipment has a high dust accumulation on the ground The suction force is closely related to the air leakage area of ​​the vacuum pipe network (i.e. the number of vacuuming operations at the same time) and the resistance along the vacuum pipe network. The cleaning effect can only be guaranteed when the vacuum pipe network is complex and the pipes are too long and the number of vacuuming operations at the same time does not exceed 4. Otherwise, the cleaning efficiency and effect will be significantly reduced. In addition, since the system is equipped with large-volume and high-negative-pressure vacuum equipment, the wind speed in the pipe is high, the vacuum pipe and the equipment of the vacuum filter unit are more easily worn, and the equipment maintenance cost of the vacuum system is high. Once the vacuum filter unit equipment is worn, it will seriously affect the operation of the vacuum power unit and may even cause damage to the vacuum equipment, making the system unusable. Summary of the invention

[0005] The purpose of the present invention is to provide a distributed dust cleaning system to solve the problems existing in the above-mentioned related technologies. The dust collection components can be flexibly arranged according to the use site to achieve full coverage of the dust accumulation area, improve the convenience of dust cleaning in the production environment of industrial and mining enterprises, and reduce the use and maintenance costs of the dust cleaning system.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a distributed dust cleaning system, comprising:

[0008] The dust cleaning subsystem includes a plurality of groups of dust cleaning subsystems, and the dust cleaning subsystems are arranged in parallel; each group of the dust cleaning subsystems includes a dust suction component and an ash conveying component, and the dust suction component includes a negative pressure power unit, a dust filtering unit, a negative pressure dust suction pipeline and a plurality of dust suction tools, the negative pressure power unit is connected to the negative pressure dust suction pipeline, the pressure in the negative pressure dust suction pipeline is lower than the ambient pressure of the use environment, the dust filtering unit is arranged between the negative pressure power unit and the negative pressure dust suction pipeline, and each of the dust suction tools The tools are all connected with the negative pressure dust suction pipeline, so that the environmental dust is sucked into the negative pressure dust suction pipeline through the dust suction tool, and the dust-containing wind in the negative pressure dust suction pipeline is purified by the dust filter unit and then discharged by the negative pressure power unit, and the ash hopper of the dust filter unit can collect dust; the ash conveying component includes an ash discharge valve group, an ash conveying bin pump and a positive pressure ash conveying branch pipeline, the ash hopper of the dust filter unit is connected with the ash conveying bin pump through the ash discharge valve group, and the ash conveying bin pump is connected with the positive pressure ash conveying branch pipeline;

[0009] A centralized ash bin, the centralized ash bin comprises a bin top ash unloading mechanism, an ash bin and a positive-pressure ash conveying main pipeline, all of the positive-pressure ash conveying branch pipelines are connected to the positive-pressure ash conveying main pipeline, the end of the positive-pressure ash conveying main pipeline is connected to the bin top ash unloading mechanism, the bin top ash unloading mechanism is arranged at the top of the ash bin, all dust in the positive-pressure ash conveying branch pipelines is collected into the positive-pressure ash conveying main pipeline, and falls into the ash bin for storage after the pressure is relieved by the bin top ash unloading mechanism; the ash bin comprises an ash bin body and a supporting mechanism, the supporting mechanism is used to support the ash bin body, and a bin top material level meter is arranged on the top of the ash bin body.

[0010] Preferably, the dust suction assembly further comprises a quick-connect valve, and the quick-connect valve is arranged on the negative pressure dust suction pipe;

[0011] There are multiple quick-connect valves, and the vacuum tool can be connected to the negative pressure vacuum pipe by using the quick-connect valves.

[0012] Preferably, the vacuuming tool comprises a connecting hose and a suction rake, the suction rake is connected to the quick-connect valve by means of the connecting hose, and the connecting hose and the suction rake are combined in a set.

[0013] Preferably, the distance between two adjacent quick-connect valves is no more than 30m.

[0014] Preferably, the dust filtering unit comprises a multi-stage dust filtering device, the dust filtering devices are sequentially arranged in series along the dust conveying direction, and all the dust filtering devices are provided with an ash hopper and an ash hopper level meter.

[0015] Preferably, all dust filtering devices of the ash cleaning subsystem are equipped with the ash conveying component, and the ash conveying component is interlocked with the ash hopper level meter of the dust filtering device. When the ash hopper level meter detects that the dust in the ash hopper is at a high level, the dust in the ash hopper enters the ash conveying bin pump through the ash unloading valve group, and then merges into the positive pressure ash conveying main pipeline through the positive pressure ash conveying branch pipeline and finally enters the centralized ash bin for storage.

[0016] Preferably, the centralized ash bin also includes an ash unloading valve port, and the lower bin outlet of the ash bin body is connected to the ash unloading valve port. When the bin top level meter detects that the dust in the ash bin body is at a high level, the dust in the ash bin body is discharged through the ash unloading valve port to an external suction and discharge tank truck or pneumatic ash conveying pipeline for external delivery.

[0017] Compared with the related art, the present invention has achieved the following technical effects: the distributed dust cleaning system of the present invention includes a dust cleaning subsystem and a centralized ash bin. The number of dust cleaning subsystems is multiple groups, and the dust cleaning subsystems are arranged in parallel; each group of dust cleaning subsystems includes a dust suction component and an ash conveying component, the dust suction component includes a negative pressure power unit, a dust filtering unit, a negative pressure dust suction pipe and a plurality of dust suction tools, the negative pressure power unit is connected to the negative pressure dust suction pipe, the pressure in the negative pressure dust suction pipe is lower than the ambient air pressure of the use environment, the dust filtering unit is arranged between the negative pressure power unit and the negative pressure dust suction pipe, and each dust suction tool is connected to the negative pressure dust suction pipe so that the environmental dust accumulated in the environment is sucked into the negative pressure dust suction pipe through the dust suction tool, and the dust-laden air in the negative pressure dust suction pipe is purified by the dust filtering unit and then discharged by the negative pressure power The dust is discharged outside the unit, and the ash hopper of the dust filtration unit can collect dust; the ash conveying component includes an ash unloading valve group, an ash conveying bin pump and a positive pressure ash conveying branch pipe. The ash hopper of the dust filtration unit is connected with the ash conveying bin pump through the ash unloading valve group, and the ash conveying bin pump is connected with the positive pressure ash conveying branch pipe; the centralized ash bin includes a bin top ash unloading mechanism, an ash bin and a positive pressure ash conveying main pipe. All positive pressure ash conveying branch pipes are connected with the positive pressure ash conveying main pipe. The end of the positive pressure ash conveying main pipe is connected with the bin top ash unloading mechanism. The bin top ash unloading mechanism is arranged on the top of the ash bin. All dust in the positive pressure ash conveying branch pipes is collected into the positive pressure ash conveying main pipe, and falls into the ash bin for storage after the pressure is relieved by the bin top ash unloading mechanism; the ash bin includes an ash bin body and a supporting mechanism. The supporting mechanism is used to support the ash bin body. A bin top material level meter is arranged on the top of the ash bin body.

[0018] The distributed dust cleaning system of the present invention, when in use, utilizes the dust suction tool to suck the dust into the negative pressure dust suction pipe connected thereto under the action of negative pressure. The negative pressure dust suction pipe can be connected to multiple dust suction tools to achieve multi-point adsorption, thereby solving the problem of poor convenience in use of mobile single-point negative pressure vacuum cleaners. The dust-laden wind in the negative pressure dust suction pipe is purified by the dust filtering unit and then discharged externally through the negative pressure power unit. The dust collected by the dust filtering unit falls into the ash hopper at its lower portion and is input into the positive pressure ash conveying branch pipe. The dust in all the positive pressure ash conveying branch pipes is merged into the positive pressure ash conveying main pipe, and finally falls into the ash bin after the pressure is relieved by the ash unloading mechanism on the silo top, thereby facilitating centralized treatment. The ash bin comprises an ash bin body and a supporting mechanism. A silo top material level meter is provided on the top of the ash bin body to monitor the dust level in the ash bin body. The distributed cleaning system of the present invention can flexibly arrange multiple groups of cleaning subsystems according to the actual floor distribution of the production workshop and the size of the platform area on each floor, so as to realize clean and convenient cleaning operations under various working conditions. Each cleaning subsystem is equipped with an independent negative pressure power unit, which solves the problem that the negative pressure of the entire pipe network of the pipe network central vacuum cleaner is provided by one vacuum main unit, and the overall space of the vacuum main unit is relatively large, which increases the manufacturing cost and land cost, and at the same time reduces the use and maintenance cost of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of a distributed dust cleaning system disclosed in an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the structure of a dust cleaning subsystem of a distributed dust cleaning system disclosed in an embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of a centralized ash bin of a distributed ash cleaning system disclosed in an embodiment of the present invention.

[0023] In the figure: 1. Negative pressure dust suction pipeline; 2. Quick-connect valve; 3. Connecting hose; 4. Suction rake; 5. Primary dust filtering equipment; 6. Secondary dust filtering equipment; 7. Negative pressure power unit; 8. Ash unloading valve group; 9. Ash silo pump; 10. Positive pressure ash conveying branch pipeline; 11. Ash unloading mechanism on silo top; 12. Ash silo; 13. Material level meter on silo top; 14. Positive pressure ash conveying main pipeline. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The purpose of the present invention is to provide a distributed dust cleaning system to solve the problems existing in the above-mentioned related technologies. The dust collection components can be flexibly arranged according to the use site to achieve full coverage of the dust accumulation area, improve the convenience of dust cleaning in the production environment of industrial and mining enterprises, and reduce the use and maintenance costs of the dust cleaning system.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] The present invention provides a distributed dust cleaning system, please refer to Figure 1-Figure 3 , including a dust cleaning subsystem and a centralized ash bin. The number of dust cleaning subsystems is multiple groups, and the dust cleaning subsystems are arranged in parallel; each group of dust cleaning subsystems includes a dust suction component and an ash conveying component. The dust suction component includes a negative pressure power unit 7, a dust filter unit, a negative pressure dust suction pipeline 1 and a plurality of dust suction tools. The negative pressure power unit 7 is connected to the negative pressure dust suction pipeline 1. The pressure in the negative pressure dust suction pipeline 1 is lower than the ambient air pressure of the use environment. The dust filter unit is arranged between the negative pressure power unit 7 and the negative pressure dust suction pipeline 1. Each dust suction tool is connected to the negative pressure dust suction pipeline 1 to suck the environmental dust into the negative pressure dust suction pipeline 1 through the dust suction tool. The dust-containing air in the negative pressure dust suction pipeline 1 is purified by the dust filter unit and then discharged by the negative pressure power unit 7. The ash hopper of the dust filter unit can collect dust; the ash conveying component includes an ash discharge valve group 8. Ash bin pump 9 and positive pressure ash conveying branch pipe 10. The ash hopper of the dust filtration unit is connected with the ash bin pump 9 through the ash unloading valve group 8. The ash bin pump 9 is connected with the positive pressure ash conveying branch pipe 10. The centralized ash bin includes a bin top ash unloading mechanism 11, an ash bin 12 and a positive pressure ash conveying main pipe 14. All positive pressure ash conveying branch pipes 10 are connected with the positive pressure ash conveying main pipe 14. The end of the positive pressure ash conveying main pipe 14 is connected with the ash bin 12 by the bin top ash unloading mechanism 11. The bin top ash unloading mechanism 11 is arranged on the top of the ash bin 12. All dust in the positive pressure ash conveying branch pipes 10 is collected into the positive pressure ash conveying main pipe 14, and falls into the ash bin 12 for storage after the pressure is relieved by the bin top ash unloading mechanism 11. The ash bin 12 includes an ash bin body and a supporting mechanism. The supporting mechanism is used to support the ash bin body. A bin top material level meter is arranged on the top of the ash bin body.

[0028] When the distributed dust cleaning system of the present invention is used, the dust is sucked into the negative pressure dust suction pipe 1 connected thereto by using a dust suction tool under the action of negative pressure. The negative pressure dust suction pipe 1 can be connected to multiple dust suction tools to achieve multi-point adsorption, which solves the problem of poor convenience in the use of mobile single-point negative pressure vacuum cleaners. The dust-containing wind in the negative pressure dust suction pipe 1 is purified by the dust filter unit and then discharged through the negative pressure power unit 7. The dust collected by the dust filter unit falls into the ash hopper at its lower part and is input into the positive pressure ash delivery branch pipe 10. All dust in the positive pressure ash delivery branch pipe 10 is collected into the positive pressure ash delivery main pipe 14, and finally falls into the ash bin 12 after the pressure is released by the silo top ash unloading mechanism 11, which is convenient for centralized processing. The ash bin 12 includes an ash bin body and a support mechanism. A silo top material level 13 is provided on the top of the ash bin body to monitor the dust level in the ash bin body. When the material level is high, the dust in the ash bin body is discharged. The distributed cleaning system of the present invention can flexibly arrange multiple groups of cleaning subsystems according to the actual floor distribution of the production workshop and the size of the platform area on each floor, so as to realize clean and convenient cleaning operations under various working conditions. Each cleaning subsystem is equipped with an independent negative pressure power unit 7, which solves the problem that the negative pressure of the entire pipe network of the pipe network central vacuum cleaner is provided by a vacuum main unit, and the overall space of the vacuum main unit is relatively large, which increases the manufacturing cost and land cost, and at the same time reduces the use and maintenance cost of the system.

[0029] The ash bin 12 includes an ash bin body and a support mechanism. The support mechanism is used to support the ash bin body. The ash bin body is provided with a bin top material level meter 13. When the bin top material level meter 13 shows a high material level, it indicates that the dust in the bin needs to be transported out. Generally, the dust can be transported out by pneumatic conveying or suction tank trucks and other ash conveying equipment. The support mechanism provides stable support for the ash bin 12, ensuring the structural stability of the ash bin 12.

[0030] In actual applications, a dust cleaning subsystem can be set up on each platform. The configured negative pressure power unit 7 is only responsible for the dust accumulation on the floor of the platform. The negative pressure dust suction pipes 1 are all arranged horizontally without other spatial pipeline arrangements, so the resistance along the way and the local resistance are small. Therefore, the configured negative pressure power unit 7 does not need too high air volume and pressure to meet the actual needs of the site. The overall equipment investment, land occupation, operation, maintenance and power consumption costs are relatively low. In addition, the negative pressure dust suction pipes 1 are all arranged horizontally without other spatial angle pipeline arrangements, so the resistance along the way and the local resistance are small. Therefore, the number of points on each platform that can perform effective dust suction operations at the same time is basically unlimited, which can greatly improve the efficiency of dust cleaning operations and shorten operation time.

[0031] Among them, the dust suction component also includes a quick-connect valve 2, which is arranged on the negative pressure dust suction pipe 1; there are multiple quick-connect valves 2, and the quick-connect valves 2 can be evenly spaced on the negative pressure dust suction pipe 1, and the dust suction tool can be connected to the negative pressure dust suction pipe 1 by using the quick-connect valve 2. During operation, the staff only needs to connect the dust suction tool to the quick-connect valve 2 on the negative pressure dust suction pipe 1 of the operation area that needs to be cleaned, and the cleaning operation can be started. There is no need to solve the problem of collecting dust, and the operation is convenient and quick. In actual applications, the quick-connect valves 2 can also be distributed at unequal intervals according to actual working conditions, but the distance between two adjacent quick-connect valves 2 is generally not more than 30m to ensure the reliability of dust adsorption.

[0032] In this specific embodiment, the vacuuming tool includes a connecting hose 3 and a suction rake 4. The suction rake 4 is connected to the quick-connect valve 2 by means of the connecting hose 3. The connecting hose 3 and the suction rake 4 are combined in a set. The provision of the connecting hose 3 facilitates the connection between the suction rake 4 and the quick-connect valve 2, and at the same time facilitates the suction rake 4 to absorb dust in a certain area, thereby further improving the convenience of operation.

[0033] Specifically, the dust filtration unit includes a multi-stage dust filtration device, which is arranged in series along the dust conveying direction to enhance the dust separation effect and avoid environmental pollution when the air is discharged. In this specific embodiment, the dust filtration unit includes a primary dust filtration device 5 and a secondary dust filtration device 6. The dust in the negative pressure dust suction pipe 1 is transported to the primary dust filtration device 5 for coarse powder separation, and then enters the secondary dust filtration device 6 for fine powder separation. The purified pipeline wind enters the negative pressure power unit 7 and is discharged. The coarse dust collected by the primary dust filtration device 5 and the fine dust collected by the secondary dust filtration device 6 are input into the positive pressure ash conveying branch pipe 10.

[0034] All dust filtering equipment are equipped with ash hoppers and ash hopper level meters. All dust filtering equipment are equipped with ash conveying components. The ash conveying components are interlocked with the ash hopper level meter of the dust filtering equipment. When the ash hopper level meter detects that the dust in the ash hopper is at a high level, the dust in the ash hopper enters the ash conveying bin pump 9 through the ash unloading valve group 8, and is merged into the positive pressure ash conveying main pipeline 14 through the positive pressure ash conveying branch pipeline 10 and finally enters the centralized ash bin for storage.

[0035] It should also be noted that the dust collected by the ash hopper of the dust filtration unit can be input into the positive pressure ash conveying branch pipe 10 using the ash unloading valve group 8, and an ash conveying bin pump 9 is provided between the ash unloading valve group 8 and the positive pressure ash conveying branch pipe 10 to ensure smooth transportation of dust.

[0036] The present invention sets up a dust cleaning subsystem on each platform, and the configured ash bin pump 9 is only responsible for transporting the ground dust collected on the platform of this layer. The amount of ash transported is relatively small, and the required compressed air volume and air pressure are relatively small. The configured positive pressure ash conveying branch pipeline 10 has a shorter overall path and a lower wind speed at the end of the pipeline. Therefore, the compressed air consumption is reduced, the life of the pipeline is extended, and efficient transportation of collected dust is achieved, which greatly improves the efficiency of the ash conveying operation and shortens the operation time.

[0037] In this specific embodiment, the ash discharge valve group 8 is connected to the positive pressure ash conveying branch pipe 10. In practical applications, a dust cleaning subsystem is set on each platform, and the configured negative pressure power unit 7 is only responsible for the dust on the floor of the platform, and the positive pressure ash conveying branch pipe 10 is also only responsible for transporting the dust collected on the floor of the platform, and collecting it to the positive pressure ash conveying main pipe 14. The relatively independent operation system between each dust cleaning subsystem can realize flexible regulation. At the same time, the paths of the negative pressure dust suction pipe 1 and the positive pressure ash conveying branch pipe 10 are relatively short, the pipeline failure rate is significantly reduced, and the fault point positioning and maintenance are also more convenient.

[0038] More specifically, the centralized ash bin includes a silo top ash unloading mechanism 11, and the positive pressure ash conveying branch pipe 10 is connected to the ash bin 12 by the silo top ash unloading mechanism 11. The silo top ash unloading mechanism 11 is arranged at the top of the ash bin 12. All dust in the positive pressure ash conveying branch pipes 10 is collected into the positive pressure ash conveying main pipe 14, and is passed into the ash bin 12 after the pressure is relieved by the silo top ash unloading mechanism 11. The dust in the positive pressure ash conveying branch pipes 10 is collected and transported to the silo top ash unloading mechanism 11, and the dust falls into the silo 12 after the pressure is relieved by the silo top ash unloading mechanism 11, which facilitates the subsequent centralized treatment of the dust, ensures the smooth transportation of the dust, and improves the operational safety factor of the system.

[0039] It should also be noted that when the material level meter 13 on the top of the silo shows that the material level in the ash silo 12 is high, the dust in the ash silo 12 can be transported out. In practical applications, other monitoring elements capable of monitoring the material level in the ash silo 12 can also be selected.

[0040] In other specific embodiments that can be realized by the present invention, the centralized ash bin also includes an ash discharge valve port, and the lower bin outlet of the ash bin body is connected to the ash discharge valve port. When the bin top material level meter 13 detects that the dust in the ash bin body is at a high material level, the dust in the ash bin body is discharged through the ash discharge valve port to the external suction and discharge tank truck or pneumatic ash conveying pipeline for external delivery. For example, the bottom of the ash bin 12 is connected to the pneumatic ash conveying pipeline. The dust in the ash bin 12 can be transported to the pneumatic ash conveying pipeline according to the production plan requirements and delivered through the pneumatic ash conveying pipeline. In practical applications, ash conveying equipment such as suction and discharge tank trucks can also be used to transport the dust in the ash bin 12.

[0041] According to the distributed dust cleaning system of the present invention, each platform is provided with a negative pressure dust suction pipe 1 according to the actual area space and a plurality of quick-connect valves 2 and a plurality of connecting hoses 3 and suction rakes 4. After the dust on the ground is sucked in by the suction rake 4 under negative pressure, it enters the negative pressure dust suction pipe 1 through the connecting hose 3 and the quick-connect valve 2; the dust accumulated on each platform is collected and enters the negative pressure dust suction pipe 1 through the negative pressure dust suction operation, and is negatively pressure transported to the primary dust filter equipment 5 for coarse powder separation, and then enters the secondary dust filter equipment 6 for fine powder separation, and the purified pipeline wind enters the negative pressure power unit 7 and is discharged externally. The coarse dust collected by the primary dust filter 5 through the coarse powder separation is discharged into the matching ash bin pump 9 through the matching ash discharge valve group 8. The fine dust separated by the secondary dust filter 6 through the matching ash discharge valve group 8 is also discharged into the matching ash bin pump 9 through the matching ash discharge valve group 8. The dust collected by the two-stage dust filter equipment is positively pressured into the positive pressure ash delivery branch pipe 10 by the ash delivery bin pump 9. The accumulated dust on each platform is collected into the positive pressure ash delivery main pipe 14 through the positive pressure ash delivery branch pipe 10, and is transported to the silo top ash discharge mechanism 11 for pressure relief, and then falls into the silo 12. The silo top material level meter 13 is used to monitor the dust level in the silo 12. The dust in the silo 12 is delivered to the outside through the pneumatic ash delivery pipe according to the production plan requirements. The structural and functional integrity of the distributed dust cleaning system is achieved through the joint action of various components, ensuring that all accumulated dust on the ground can be efficiently and cleanly cleaned and collected during the dust cleaning operation.

[0042] The distributed dust cleaning system of the present invention is equipped with a dust cleaning subsystem on each platform, and the configured negative pressure power unit 7 and positive pressure dust conveying facilities solve the problem that for a large-area production workshop with multiple floors, a central vacuum cleaner with a network type needs to be equipped with a vacuum main unit with high negative pressure and large air volume to ensure the dust collection effect of the entire system network, which leads to the problem that the air volume and air pressure of each branch pipe in the network are easily unbalanced, resulting in the number of points for effective dust collection at the same time being ≤4. A dust cleaning subsystem is set on each platform, and each component is equipped with an independent negative pressure power unit 7 and positive pressure dust conveying facilities (dust filtration unit, dust discharge valve group 8 and dust conveying bin pump 9), which solves the problem that a mobile single-point negative pressure vacuum cleaner needs to be equipped with an additional power supply in a large floor area operation area and cannot handle large quantities of collected dust.

[0043] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A distributed dust cleaning system, characterized in that: include: The dust cleaning subsystem includes a plurality of groups of dust cleaning subsystems, and the dust cleaning subsystems are arranged in parallel; each group of the dust cleaning subsystems includes a dust suction component and an ash conveying component, and the dust suction component includes a negative pressure power unit, a dust filtering unit, a negative pressure dust suction pipeline and a plurality of dust suction tools, the negative pressure power unit is connected to the negative pressure dust suction pipeline, the pressure in the negative pressure dust suction pipeline is lower than the ambient pressure of the use environment, the dust filtering unit is arranged between the negative pressure power unit and the negative pressure dust suction pipeline, and each of the dust suction tools The tools are all connected with the negative pressure dust suction pipeline, so that the environmental dust is sucked into the negative pressure dust suction pipeline through the dust suction tool, and the dust-containing wind in the negative pressure dust suction pipeline is purified by the dust filter unit and then discharged by the negative pressure power unit, and the ash hopper of the dust filter unit can collect dust; the ash conveying component includes an ash discharge valve group, an ash conveying bin pump and a positive pressure ash conveying branch pipeline, the ash hopper of the dust filter unit is connected with the ash conveying bin pump through the ash discharge valve group, and the ash conveying bin pump is connected with the positive pressure ash conveying branch pipeline; A centralized ash bin, the centralized ash bin comprises a bin top ash unloading mechanism, an ash bin and a positive-pressure ash conveying main pipeline, all of the positive-pressure ash conveying branch pipelines are connected to the positive-pressure ash conveying main pipeline, the end of the positive-pressure ash conveying main pipeline is connected to the bin top ash unloading mechanism, the bin top ash unloading mechanism is arranged at the top of the ash bin, all dust in the positive-pressure ash conveying branch pipelines is collected into the positive-pressure ash conveying main pipeline, and falls into the ash bin for storage after the pressure is relieved by the bin top ash unloading mechanism; the ash bin comprises an ash bin body and a supporting mechanism, the supporting mechanism is used to support the ash bin body, and a bin top material level meter is arranged on the top of the ash bin body.

2. The distributed dust cleaning system according to claim 1, characterized in that: The dust suction assembly further comprises a quick-connect valve, and the quick-connect valve is arranged on the negative pressure dust suction pipe; There are multiple quick-connect valves, and the vacuum tool can be connected to the negative pressure vacuum pipe by using the quick-connect valves.

3. The distributed dust cleaning system according to claim 2 is characterized in that: The vacuuming tool comprises a connecting hose and a suction rake. The suction rake is connected to the quick-connect valve by means of the connecting hose. The connecting hose and the suction rake are combined in a set.

4. The distributed dust cleaning system according to claim 2, characterized in that: The distance between two adjacent quick-connect valves is no more than 30m.

5. The distributed dust cleaning system according to claim 1, characterized in that: The dust filtering unit comprises a multi-stage dust filtering device, which is arranged in series in sequence along the dust conveying direction, and all the dust filtering devices are provided with an ash hopper and an ash hopper level meter.

6. The distributed dust cleaning system according to claim 5, characterized in that: All dust filtering devices of the ash cleaning subsystem are equipped with the ash conveying component, and the ash conveying component is interlocked with the ash hopper level meter of the dust filtering equipment. When the ash hopper level meter detects that the dust in the ash hopper is at a high level, the dust in the ash hopper enters the ash conveying bin pump through the positive pressure ash conveying branch pipe, merges into the positive pressure ash conveying main pipe and finally enters the centralized ash bin for storage.

7. The distributed dust cleaning system according to claim 5, characterized in that: The centralized ash bin also includes an ash unloading valve port, and the lower bin outlet of the ash bin body is connected to the ash unloading valve port. When the bin top level meter detects that the dust in the ash bin body is at a high level, the dust in the ash bin body is discharged through the ash unloading valve port to an external suction and discharge tank truck or pneumatic ash conveying pipeline for external delivery.

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