Cleaning device for pulverized coal conveying workshop of thermal power plant

Abstract

The utility model relates to the technical field of dust removal devices, in particular to a thermal power plant pulverized coal conveying workshop cleaning device which comprises a filter assembly, a pipe network assembly, a handheld assembly and a negative pressure assembly, the filter assembly comprises a plurality of bag type dust collectors which are connected in series, and the pipe network assembly comprises a plurality of gas distribution pipes; the first end of the air distribution pipe is connected to the input end of the filtering assembly, the second end of the air distribution pipe is a closed end, the handheld assembly comprises a plurality of handheld pipes which are hoses, the air distribution pipe is provided with a plurality of handheld pipes in the axial direction, manual valves are installed on the handheld pipes, the negative pressure assembly comprises a negative pressure chamber, and a plurality of negative pressure fans are arranged in the negative pressure chamber. A negative pressure pipe is installed at the input end of the negative pressure chamber and connected to the output end of the bag type dust collector. Scattering pulverized coal is cleaned through the negative pressure pipeline, and flying dust possibly caused in the cleaning process is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of dust removal devices, and in particular to a cleaning device for a coal powder conveying workshop in a thermal power plant. Background Art

[0002] The pulverized coal in pulverized coal power plants is usually transported from the material field to the coal bunker via multiple conveyor belts. During the transportation process, for open belt conveyors, a large amount of pulverized coal will fall around the belts and various transfer devices, causing dust to fill the confined space. The common cleaning methods in factories are manual cleaning or water washing, which are labor-intensive and difficult to clean. A large amount of dust will be generated during the cleaning process, threatening the physical and mental health of workers and causing environmental pollution. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the present application is to provide a cleaning device for a large space in a coal powder conveying workshop of a thermal power plant.

[0004] The above application objectives of this application are achieved through the following technical solutions:

[0005] A cleaning device for a coal powder conveying workshop in a thermal power plant, comprising:

[0006] A filter assembly, the filter assembly comprising a plurality of bag dust collectors, wherein the plurality of bag dust collectors are connected in series;

[0007] A pipe network component, the pipe network component comprises a plurality of gas distribution pipes, the first end of the gas distribution pipe is connected to the input end of the filter component, and the second end is a closed end;

[0008] A handheld assembly, wherein the handheld assembly comprises a handheld tube, the handheld tube is a hose, a plurality of handheld tubes are axially mounted on each of the gas distribution pipes, and a manual valve is mounted on the handheld tube;

[0009] A negative pressure component comprises a negative pressure chamber, a plurality of negative pressure fans are arranged in the negative pressure chamber, a negative pressure pipe is installed at the input end of the negative pressure chamber, and the negative pressure pipe is connected to the output end of the bag dust collector.

[0010] Optionally, the dust particle size filtered by the bag in the bag dust collector gradually decreases from the end connected to the pipe network component to the end connected to the negative pressure component.

[0011] Optionally, the filter assembly includes a pre-filter cartridge filled with water, the first end of the air distribution pipe extends below the liquid level, an output pipe is provided at the upper end of the pre-filter cartridge, and the output pipe is connected to the input end of the bag filter.

[0012] Optionally, a heating tube is arranged in the middle of the output tube, a heating resistance wire is surrounded on the inner side of the heating tube, and a one-way exhaust valve is installed on the heating tube.

[0013] Optionally, a gas flow meter is installed at the first end of the gas distribution pipe, the negative pressure fan is connected to an electric control switch, the electric control switch is electrically connected to a control module, and the gas flow meter is electrically connected to the control module.

[0014] Optionally, the handheld tube input end is connected to a probe tube section, and the outer side of the probe tube section is a shapeable metal bellows.

[0015] Optionally, a back-blowing pipe is connected between the first end of the gas distribution pipe and the input end of the heating pipe, and solenoid valves are provided on the back-blowing pipe, the output end of the heating pipe, and the input end of the output pipe, and the heating pipe is connected to a back-blowing blower.

[0016] Optionally, the input end of the handheld tube is configured as a quick interface.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] The scattered coal powder is cleaned through the negative pressure pipeline, which reduces the dust that may be caused during the cleaning process. It can also be used as a dust removal device to reduce the scattering of coal powder.

[0019] The scattered coal powder contains different particle sizes. By setting bags with different apertures, dust of different particle sizes can be intercepted and filtered at different stages, reducing the filtering pressure of a single bag filter.

[0020] There may be some liquid such as water in the coal powder scattered on the ground. During the suction process, this part of the liquid may be sucked in. By setting a pre-filter cartridge, the possibility of liquid being sucked into the bag filter is reduced. At the same time, the coal powder in the gas is filtered through the water in the pre-filter cartridge.

[0021] After long-term use, there may be residual coal powder in the pipe network components and handheld components. Especially when liquid is inhaled or the air is humid, the handheld component is partially inserted into the water to absorb water through negative pressure, and the front filter cartridge is used as a sewage storage bucket to clean the pipe network components and handheld components. By setting up a back-blowing pipe and a back-blowing blower, after the cleaning is completed, the hot air flow of the heating pipe is blown into the pipe network components and handheld components through the back-blowing blower to dry them. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of the structure of the handheld component part of the embodiment of the present application.

[0024] Reference numerals: 1, filter assembly; 11, bag filter; 12, pre-filter cartridge; 121, output pipe; 122, heating pipe;

[0025] 2. Pipe network assembly; 21. Air distribution pipe; 211. Back-blowing pipe; 212. Back-blowing blower;

[0026] 3. Handheld assembly; 31. Handheld tube; 32. Manual valve; 33. Probe section;

[0027] 4. Negative pressure component; 41. Negative pressure chamber; 42. Negative pressure fan; 43. Negative pressure pipe. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings.

[0029] See also Figure 1 and Figure 2 , is a cleaning device for a coal powder conveying workshop in a thermal power plant disclosed in an embodiment of the present application, comprising a filter assembly 1, a pipe network assembly 2, a handheld assembly 3 and a negative pressure assembly 4, the filter assembly 1 comprising a plurality of bag dust collectors 11, the plurality of bag dust collectors 11 being connected in series, the pipe network assembly 2 comprising a plurality of air distribution pipes 21, the first end of the air distribution pipe 21 being connected to the input end of the filter assembly 1, the second end of the air distribution pipe 21 being a closed end, the handheld assembly 3 comprising a handheld tube 31, the handheld tube 31 being a hose, the air distribution pipes 21 being axially mounted with a plurality of handheld tubes 31, the handheld tubes 31 being mounted with a manual valve 32, the negative pressure assembly 4 comprising a negative pressure chamber 41, a plurality of negative pressure fans 42 being arranged in the negative pressure chamber 41, a negative pressure tube 43 being mounted at the input end of the negative pressure chamber 41, the negative pressure tube 43 being connected to the output end of the bag dust collector 11.

[0030] Specifically, the negative pressure component 4 is used to form a negative pressure space in the filter component 1, so that the pipe network component 2 and the handheld component 3 are partially negatively pressurized, and then the handheld component 3 is controlled to suck the scattered coal powder on the ground.

[0031] In this way, the scattered coal powder is cleaned through the negative pressure pipe, which reduces the dust that may be caused during the cleaning process. It can also be used as a dust removal device to reduce the scattering of coal powder.

[0032] In some feasible embodiments, the bag dust collector 11 is a common dust removal chamber part of a dust collector. Multiple bag dust collectors 11 are connected in series to make the gas undergo multiple filtrations to improve the filtration effect. The air distribution pipe 21 is installed above the conveying workshop, connecting the handheld tube 31 and the filter assembly 1. The handheld tube 31 is a hose, which is convenient for the operator to hold the handheld tube 31 for suction. The manual valve 32 is a valve for controlling the handheld tube 31. The opening and closing of the handheld tube 31 is controlled by controlling the manual valve 32, which is convenient for saving energy when not in use. The negative pressure chamber 41 is a rectangular chamber. The negative pressure chamber 41 can form a negative pressure through the operation of the negative pressure fan 42, and then the bag dust collector 11 is negatively pressurized through the negative pressure tube 43.

[0033] As a specific implementation of a cleaning device for a coal powder conveying workshop in a thermal power plant provided in the application, the particle size of the dust filtered by the bag in the bag filter 11 gradually decreases from the end connected to the pipe network component 2 to the end connected to the negative pressure component 4.

[0034] In general, the scattered coal powder contains particles of different sizes. By setting bags with different pore sizes, dust particles of different sizes can be intercepted and filtered at different stages, thereby reducing the filtering pressure of a single bag filter 11.

[0035] As another specific embodiment of a cleaning device for a coal powder conveying workshop in a thermal power plant provided in the application, the filter assembly 1 includes a pre-filter cartridge 12, the pre-filter cartridge 12 is filled with water, the first end of the air distribution pipe 21 extends below the liquid level, and an output pipe 121 is provided at the upper end of the pre-filter cartridge 12, and the output pipe 121 is connected to the input end of the bag dust collector 11.

[0036] In combination with specific usage scenarios, there may be a small amount of water or other liquids mixed with the coal powder in the coal powder scattered on the ground. During the suction process, this part of the liquid may be sucked in. By setting the pre-filter cartridge 12, the possibility of the liquid being sucked into the bag filter 11 is reduced or directly avoided. At the same time, the coal powder in the gas is filtered by the water in the pre-filter cartridge 12. When sucking, the water body is lifted in the form of droplets and then enters the pre-filter cartridge 12. The liquid in the pre-filter cartridge 12 sinks to the bottom and converges, and can also adhere to a part of the dust. In actual use A soft air pipe or other pipe is used in combination with a hose to realize the changeable suction position at the hand-held tube 31 to achieve suction of surrounding workstations or corridors. During the suction process, the power of the negative pressure fan 42 is relatively large, and some block materials such as gravel can be suctioned. During the suction process, it is not recommended to continuously suction a large amount of water for a long time to avoid excessive backflow of water. During the installation process, the height of the pre-filter cartridge 12 can be flexibly adjusted, and a hole can be dug in the ground and connected at a lower position to gather more water. In addition, the small amount of water extracted needs to be discharged into the sewage pipe in a timely manner.

[0037] Furthermore, a heating tube 122 is provided in the middle of the output tube 121 , a heating resistance wire is surrounded on the inner side of the heating tube 122 , and a one-way exhaust valve is installed on the heating tube 122 .

[0038] It should be understood that by providing a heating pipe 122, the gas exhausted from the pre-filter cartridge 12 is heated and dried, and by providing a one-way exhaust valve, the expanded gas is exhausted.

[0039] Furthermore, a back-blowing pipe 211 is connected between the first end of the gas distribution pipe 21 and the input end of the heating pipe 122 , and solenoid valves are provided on the back-blowing pipe 211 , the output end of the heating pipe 122 , and the input end of the output pipe 121 . The heating pipe 122 is connected to a back-blowing blower 212 .

[0040] Combined with specific usage scenarios, there may be residual coal powder in the pipe network component 2 and the handheld component 3 after long-term use, especially when liquid is inhaled or the air is humid, the handheld component 3 is partially extended into the water, and water is absorbed by negative pressure, and the front filter cartridge 12 is used as a sewage storage bucket to clean the pipe network component 2 and the handheld component 3. By setting the back-blowing pipe 211 and the back-blowing blower 212, after the cleaning is completed, the hot air flow of the heating pipe 122 is blown into the pipe network component 2 and the handheld component 3 through the back-blowing blower 212 to dry them.

[0041] In some feasible methods, the output end of the heating tube 122 and the input end of the output tube 121 are normally open solenoid valves, and the back-blowing tube 211 is a normally closed solenoid valve. When drying is required, the solenoid valve of the back-blowing tube 211 is opened, and the solenoid valves of the output end of the heating tube 122 and the input end of the output tube 121 are closed, so that the back-blowing hot air flow passes through the back-blowing tube 211 and enters the gas distribution pipe 21.

[0042] As a specific implementation of a cleaning device for a coal powder conveying workshop in a thermal power plant provided in the application, a gas flow meter is installed at the first end of the gas distribution pipe 21, the negative pressure fan 42 is connected to an electric control switch, the electric control switch is electrically connected to a control module, and the gas flow meter is electrically connected to the control module.

[0043] It should be understood that the gas flow rate of each gas distribution pipe 21 is calculated by a gas flow meter, and the opening and closing of the electric control switch is controlled by the gas flow rate, thereby controlling the number of negative pressure fans 42 opened, so as to save energy when a small amount of opening is performed.

[0044] In some feasible embodiments, the control module is a single chip microcomputer control module, which adjusts the electronically controlled switch according to the gas flow rate fed back by the gas flow meter.

[0045] As a specific implementation of a cleaning device for a coal powder conveying workshop in a thermal power plant provided in the application, the input end of the handheld tube 31 is connected to a probe tube section 33, and the outer side of the probe tube section 33 is a shapeable metal bellows.

[0046] It should be understood that by setting the probe tube section 33 as a shapeable metal bellows, it can be bent into various shapes and then extended into different corners, thereby improving the cleaning range of the handheld tube 31.

[0047] As a specific implementation of a cleaning device for a coal powder conveying workshop in a thermal power plant provided in the application, the input end of the handheld tube 31 is configured as a quick interface.

[0048] It should be understood that by providing a quick interface, the hand-held tube 31 can be lengthened for easier use.

[0049] When in use, the dust travels along the probe tube section 33 into the hand-held tube 31, and then is transmitted backward through the hand-held tube 31. The set control manual valve 32 can be opened and closed flexibly, which is convenient for working according to different positions. After being gathered at the air distribution pipe 21, it can enter the pre-filter cartridge 12 to achieve simple separation, and then enter the bag dust collector 11 to achieve filtering and collection of dust.

[0050] In some feasible embodiments, the quick interface can be selected as a threaded connection, a bayonet connection, or a trachea quick-connect connector.

[0051] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cleaning device for a coal powder conveying workshop in a thermal power plant, characterized in that: include: A filter assembly (1), the filter assembly (1) comprising a plurality of bag dust collectors (11), the plurality of bag dust collectors (11) being connected in series; A pipe network component (2), the pipe network component (2) comprising a plurality of gas distribution pipes (21), the first end of the gas distribution pipe (21) being connected to the input end of the filter component (1), and the second end being a closed end; A handheld assembly (3), the handheld assembly (3) comprising a handheld tube (31), the handheld tube (31) being a hose, a plurality of the handheld tubes (31) being axially mounted on each of the gas distribution pipes (21), and a manual valve (32) being mounted on the handheld tubes (31); A negative pressure component (4), the negative pressure component (4) comprising a negative pressure chamber (41), a plurality of negative pressure fans (42) being arranged in the negative pressure chamber (41), a negative pressure pipe (43) being installed at the input end of the negative pressure chamber (41), and the negative pressure pipe (43) being connected to the output end of the bag filter (11).

2. A cleaning device for a coal powder conveying workshop in a thermal power plant according to claim 1, characterized in that: The particle size of dust filtered by the bags in the bag filter (11) gradually decreases from the end connected to the pipe network component (2) to the end connected to the negative pressure component (4).

3. A cleaning device for a coal powder conveying workshop in a thermal power plant according to claim 1, characterized in that: The filter assembly (1) comprises a pre-filter cartridge (12), the pre-filter cartridge (12) being filled with water, the first end of the gas distribution pipe (21) extending below the liquid surface, an output pipe (121) being provided at the upper end of the pre-filter cartridge (12), the output pipe (121) being connected to an input end of a bag filter (11).

4. A cleaning device for a coal powder conveying workshop in a thermal power plant according to claim 3, characterized in that: A heating tube (122) is arranged in the middle of the output tube (121), a heating resistance wire is surrounded on the inner side of the heating tube (122), and a one-way exhaust valve is installed on the heating tube (122).

5. The cleaning device for coal powder conveying workshop in thermal power plant according to claim 1 is characterized by: A gas flow meter is installed at the first end of the gas distribution pipe (21), the negative pressure fan (42) is connected to an electric control switch, the electric control switch is electrically connected to a control module, and the gas flow meter is electrically connected to the control module.

6. A cleaning device for a coal powder conveying workshop in a thermal power plant according to claim 1, characterized in that: The input end of the handheld tube (31) is connected to a probe tube section (33), and the outer side of the probe tube section (33) is a shapeable metal bellows.

7. A cleaning device for a coal powder conveying workshop in a thermal power plant according to claim 4, characterized in that: A backflush pipe (211) is connected between the first end of the gas distribution pipe (21) and the input end of the heating pipe (122); solenoid valves are provided on the backflush pipe (211), the output end of the heating pipe (122), and the input end of the output pipe (121); and the heating pipe (122) is connected to a backflush blower (212).

8. The cleaning device for coal powder conveying workshop in thermal power plant according to claim 1, characterized in that: The input end of the hand-held tube (31) is configured as a quick interface.

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