Filtering device and dust falling device with same

Abstract

The utility model provides a filtering device and a dust falling device with the filtering device. The filtering device comprises a water injection pipe and a water drainage pipe, one end of the connecting pipe is communicated with the water injection pipe, and the other end of the connecting pipe is communicated with the water drainage pipe; an inlet and an outlet of the filtering assembly are both communicated with the connecting pipe, and the inlet and the outlet of the filtering assembly are sequentially arranged in the flowing direction; the control structure controls communication of the filtering assembly with the water injection pipe and the water drainage pipe. By means of the technical scheme, the problem that in the prior art, a filtering device is poor in applicability can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust reduction devices, and in particular, to a filtering device and a dust reduction device having the same. Background Art

[0002] The work of sprinkling dust reduction is an important link in the daily production operation of open-pit mines. The water used for spraying usually comes from the reservoir of the open-pit mine. However, the water quality of the reservoir cannot be guaranteed. In the prior art, a filtering device is usually arranged between the water tank of the sprinkler and the reservoir to filter the water quality of the reservoir. However, when the water quality of the reservoir meets the spraying conditions, using the filtering device will increase the energy consumed by the dust reduction work and increase the cost of the dust reduction work, resulting in poor applicability of the filtering device in the prior art. Content of the Utility Model

[0003] The utility model provides a filtering device and a dust reduction device having the same to solve the problem of poor applicability of the filtering device in the prior art.

[0004] According to one aspect of the utility model, a filtering device is provided. The filtering device includes: a water injection pipe and a drain pipe; a connecting pipe, one end of the connecting pipe is communicated with the water injection pipe, and the other end of the connecting pipe is communicated with the drain pipe; a filtering assembly, the inlet and outlet of the filtering assembly are both communicated with the connecting pipe, and along the flow direction, the inlet and outlet of the filtering assembly are arranged in sequence; a control structure, which controls the communication between the filtering assembly and the water injection pipe and the drain pipe.

[0005] Furthermore, the filtering device includes a plurality of filtering assemblies, and the plurality of filtering assemblies are arranged at intervals along the extending direction of the connecting pipe.

[0006] Furthermore, the filtering assembly has a plurality of filters, and the plurality of filters are arranged in parallel.

[0007] Furthermore, the filtering device further includes: a plurality of control valves, which are arranged in one-to-one correspondence with the plurality of filtering assemblies. The control valves are arranged on the connecting pipe and are arranged between the inlet and outlet of the corresponding filtering assembly.

[0008] Furthermore, the control structure includes an inlet valve and an outlet valve. The inlet valve is arranged between the inlet of the filter and the water injection pipe, and the outlet valve is arranged between the outlet of the filter and the drain pipe. The inlet valve and the outlet valve cooperate to control the communication between the filter and the water injection pipe and the drain pipe.

[0009] Further, the filtering device includes a first filtering component and a second filtering component. The first filtering component includes a first filter and a second filter. The inlets of both the first filter and the second filter are connected to the water injection pipe. The outlets of both the second filter and the second filter are connected to the connecting pipe. The second filtering component includes a third filter and a fourth filter. The inlets of both the third filter and the fourth filter are connected to the connecting pipe. The outlets of both the third filter and the fourth filter are connected to the drain pipe.

[0010] Further, the first filtering component further includes a first water inlet pipe, a first water outlet pipe, a second water inlet pipe, and a second water outlet pipe. One end of the first water inlet pipe is connected to the water injection pipe, and the other end of the first water inlet pipe is connected to the inlet of the first filter. A first water inlet valve is provided on the first water inlet pipe. One end of the first water outlet pipe is connected to the outlet of the first filter, and the other end of the first water outlet pipe is connected to the connecting pipe. A first water outlet valve is provided on the first water outlet pipe. One end of the second water inlet pipe is connected to the water injection pipe, and the other end of the second water inlet pipe is connected to the inlet of the second filter. A second water inlet valve is provided on the second water inlet pipe. One end of the second water outlet pipe is connected to the outlet of the second filter, and the other end of the second water outlet pipe is connected to the connecting pipe. A second water outlet valve is provided on the second water outlet pipe. The second filtering component further includes a third water inlet pipe, a third water outlet pipe, a fourth water inlet pipe, and a fourth water outlet pipe. One end of the third water inlet pipe is connected to the connecting pipe, and the other end of the third water inlet pipe is connected to the inlet of the third filter. A third water inlet valve is provided on the third water inlet pipe. One end of the third water outlet pipe is connected to the outlet of the third filter, and the other end of the third water outlet pipe is connected to the drain pipe. A third water outlet valve is provided on the third water outlet pipe. One end of the fourth water inlet pipe is connected to the connecting pipe, and the other end of the fourth water inlet pipe is connected to the inlet of the fourth filter. A fourth water inlet valve is provided on the fourth water inlet pipe. One end of the fourth water outlet pipe is connected to the outlet of the fourth filter, and the other end of the fourth water outlet pipe is connected to the drain pipe. A fourth water outlet valve is provided on the fourth water outlet pipe.

[0011] Further, the filter has a slag discharge port. The filtering device further includes a slag discharge pipeline. The slag discharge pipeline has an inlet, a communication port, and an outlet that are interconnected. The inlet is connected to the drain pipe, the communication port is connected to the slag discharge port, and the outlet is used to discharge impurities in the filter.

[0012] Further, a pressure transmitter is provided between the inlet of the filter and the water injection pipe, and / or between the outlet of the filter and the drain pipe.

[0013] According to another aspect of the present utility model, a dust reduction device is provided. The dust reduction device includes a water supply pipeline, a water addition frame, a first water pump, a second water pump, and the above-mentioned filtering device. The water supply pipeline is communicated with the water injection pipe, the water addition frame is communicated with the drain pipe, the first water pump is communicated with the water supply pipeline to drive the liquid in the water supply pipeline to flow into the filtering device; the second water pump is arranged between the drain pipe and the water addition frame to drive the liquid in the drain pipe to flow into the water addition frame.

[0014] Applying the technical solution of the present utility model, both ends of the connecting pipe are respectively communicated with the water injection pipe and the drain pipe. The inlet and outlet of the filtering component are both communicated with the connecting pipe, and the control structure controls the communication between the filtering component and the water injection pipe and the drain pipe. When the water quality in the reservoir meets the requirements, the filtering component is disconnected from the water injection pipe and the drain pipe, and the filtering component does not need to work, reducing energy consumption and the cost of the dust reduction work. When the water quality in the reservoir is turbid and the sediment content is large, the filtering component is communicated with the water injection pipe and the drain pipe, and the filtering component can filter impurities, avoiding abrasion of the water containing impurities on the water tank and water pipe of the sprinkler, thereby avoiding failures such as clogging of the sprinkler nozzle and failure of the butterfly valve, and ensuring the spraying efficiency of the sprinkler. Therefore, in this application, filtering can be selected or not according to different water quality requirements, improving the applicability of the filtering device and making the filtering device suitable for a variety of different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The schematic diagrams in the specification that form a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0016] Figure 1 The structural schematic diagram of the filtering device provided by the present utility model is shown;

[0017] Figure 2 The top view of the filtering device provided by the present utility model is shown;

[0018] Figure 3 The structural schematic diagram of the slag discharge pipeline provided by the present utility model is shown.

[0019] Among them, the above-mentioned drawings include the following reference numerals:

[0020] 11, water injection pipe; 12, drain pipe;

[0021] Twenty, connecting pipe;

[0022] Thirty-one, the first filtering component;

[0023] Three hundred and eleven, the first filter; Three hundred and twelve, the second filter;

[0024] 313. First water inlet pipe; 314. First water outlet pipe;

[0025] 315. Second water inlet pipe; 316. Second water outlet pipe;

[0026] 32. Second filtration component;

[0027] 321. Third filter; 322. Fourth filter;

[0028] 323. Third water inlet pipe; 324. Third water outlet pipe;

[0029] 325. Fourth water inlet pipe; 326. Fourth water outlet pipe;

[0030] 411. First water inlet valve; 412. First water outlet valve;

[0031] 421. Second water inlet valve; 422. Second water outlet valve;

[0032] 431. Third water inlet valve; 432. Third water outlet valve;

[0033] 441. Fourth water inlet valve; 442. Fourth water outlet valve;

[0034] 50. Control valve;

[0035] 60. Slag discharge pipeline;

[0036] 61. Water inlet;

[0037] 62. First communication port; 63. Second communication port; 64. Third communication port; 65. Fourth communication port;

[0038] 66. Water outlet;

[0039] 70. Pressure transmitter;

[0040] 1. Second water pump. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation to the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0042] As Figure 1 and Figure 2As shown in the figure, an embodiment of the present utility model provides a filtering device, which includes a water injection pipe 11, a drain pipe 12, a connecting pipe 20, a filtering assembly and a control structure. One end of the connecting pipe 20 is communicated with the water injection pipe 11, and the other end of the connecting pipe 20 is communicated with the drain pipe 12. Both the inlet and the outlet of the filtering assembly are communicated with the connecting pipe 20, and along the flow direction, the inlet and the outlet of the filtering assembly are arranged in sequence. The control structure controls the communication between the filtering assembly and the water injection pipe 11 and the drain pipe 12.

[0043] Applying the technical solution of the present application, both ends of the connecting pipe 20 are respectively communicated with the water injection pipe 11 and the drain pipe 12, both the inlet and the outlet of the filtering assembly are communicated with the connecting pipe 20, and the control structure controls the communication between the filtering assembly and the water injection pipe 11 and the drain pipe 12. When the water quality of the reservoir meets the requirements, the filtering assembly is disconnected from the water injection pipe 11 and the drain pipe 12, and the filtering assembly does not need to work, reducing energy consumption and the cost of the dust suppression work. When the water in the reservoir is turbid and the sediment content is large, the filtering assembly is communicated with the water injection pipe 11 and the drain pipe 12, and the filtering assembly can filter impurities, avoiding abrasion of the water containing impurities on the water tank and the water pipe of the sprinkler truck, and thus avoiding failures such as blockage of the sprinkler nozzle and failure of the butterfly valve, ensuring the spraying efficiency of the sprinkler truck. Therefore, in the present application, filtration or non-filtration can be selected according to different water quality requirements, improving the applicability of the filtering device and making the filtering device applicable to a variety of different working conditions.

[0044] Among them, the filtering device includes a plurality of filtering assemblies, and the plurality of filtering assemblies are arranged at intervals along the extending direction of the connecting pipe 20. With such an arrangement, the filtering assembly can perform multi-stage filtration on the water for dust suppression, further avoiding abrasion of the water containing impurities on the water tank and the water pipe of the sprinkler truck.

[0045] At the same time, in the present application, the control structure can control the communication between each filtering assembly and the water injection pipe 11 and the drain pipe 12. With such an arrangement, non-filtration, primary filtration, secondary filtration, etc. can be selected according to different water quality requirements, further improving the applicability of the filtering device.

[0046] Specifically, in the present application, the inlet of the filtering assembly at the head end is connected to the water injection pipe 11, and the outlet of the filtering assembly at the head end is connected to the connecting pipe 20; the inlet of the filtering assembly at the tail end is connected to the connecting pipe 20, and the outlets of the filtering assembly at the tail end are all connected to the drain pipe 12; the inlets and outlets of the remaining filtering assemblies are all connected to the connecting pipe 20.

[0047] Furthermore, the filtering assembly has a plurality of filters, and the plurality of filters are arranged in parallel.

[0048] After using for a period of time, it is necessary to clean and repair the internal parts of the filter and other components. Multiple filters are arranged in parallel. When one of the filters is being cleaned or repaired, the other filters can still work, which can avoid the filtration work from being temporarily stopped due to cleaning and repair problems and ensure the smooth progress of the sprinkler dust suppression work.

[0049] As Figure 2 shown, the filtering device further includes a plurality of control valves 50. The plurality of control valves 50 are arranged in one-to-one correspondence with the plurality of filtering components. The control valve 50 is arranged on the connecting pipe 20, and the control valve 50 is arranged between the inlet and the outlet of the corresponding filtering component. With such an arrangement, when the dust suppression water needs to be filtered, the control valve 50 can be closed. With such an arrangement, it can be avoided that the dust suppression water directly flows through the connecting pipe 20 to the drain pipe 12. And, with such an arrangement, the structure is simple and it is convenient to assemble the filtering device.

[0050] Among them, the control structure includes a water inlet valve and a water outlet valve. The water inlet valve is arranged between the inlet of the filter and the water injection pipe 11, and the water outlet valve is arranged between the outlet of the filter and the drain pipe 12. The water inlet valve and the water outlet valve cooperate to control the connection between the filter and the water injection pipe 11 and the drain pipe 12. With such an arrangement, when the filter needs to work, the water inlet valve and the water outlet valve need to be opened. When the filter does not need to work or the filter needs to be repaired, the water inlet valve and the water outlet valve can be directly closed. With such an arrangement, the operation is convenient.

[0051] Specifically, in the present application, the control valve 50, the water inlet valve and the water outlet valve are all butterfly valves. With such an arrangement, it is convenient to maintain the control valve 50, the water inlet valve and the water outlet valve, and at the same time it is convenient to assemble the control valve 50, the water inlet valve and the water outlet valve. And the butterfly valve has a fast opening and closing speed and is suitable for frequent operation. At the same time, the flow resistance of the butterfly valve is small and it is suitable for the dust suppression water to pass through.

[0052] Furthermore, the filtering device includes a first filtering component 31 and a second filtering component 32.

[0053] The first filtering component 31 includes a first filter 311 and a second filter 312. The inlets of the first filter 311 and the second filter 312 are both connected to the water injection pipe 11, and the outlets of the second filter 312 and the second filter 312 are both connected to the connecting pipe 20.

[0054] The second filtering component 32 includes a third filter 321 and a fourth filter 322. The inlets of the third filter 321 and the fourth filter 322 are both connected to the connecting pipe 20, and the outlets of the third filter 321 and the fourth filter 322 are both connected to the drain pipe 12.

[0055] With such an arrangement, the filtering device includes two filtering components, and each filtering component includes two filters.

[0056] With the above structure, for different water quality requirements, the opening and closing control of the control valve 50, the water inlet valve and the water outlet valve is used to realize the conversion between non-filtration, primary filtration or secondary filtration. Moreover, the structural design of the parallel connection of the filters in each filtration component can not only accelerate the filtration speed and improve the efficiency, but also ensure that the normal operation of other filters is not affected when one of the filters is under maintenance, realizing uninterrupted operation and overcoming the problem that the filtration device is forced to stop during inspection and maintenance.

[0057] That is, in the present application, during the secondary filtration process, when one of the filters is undergoing internal cleaning and maintenance, the other three filters continue to supply water, avoiding the problem that the filtration device is forced to stop running due to maintenance. At the same time, during the peak water usage period, the first filtration component 31 and the second filtration component 32 can be fully opened, and the four filters work simultaneously, increasing the treatment volume of the water for dust suppression and improving the water filling speed of the sprinkler truck.

[0058] Specifically, the first filtration component 31 further includes a first water inlet pipe 313, a first water outlet pipe 314, a second water inlet pipe 315 and a second water outlet pipe 316.

[0059] One end of the first water inlet pipe 313 is connected to the water injection pipe 11, the other end of the first water inlet pipe 313 is connected to the inlet of the first filter 311, and a first water inlet valve 411 is provided on the first water inlet pipe 313; one end of the first water outlet pipe 314 is connected to the outlet of the first filter 311, the other end of the first water outlet pipe 314 is connected to the connecting pipe 20, and a first water outlet valve 412 is provided on the first water outlet pipe 314.

[0060] One end of the second water inlet pipe 315 is connected to the water injection pipe 11, the other end of the second water inlet pipe 315 is connected to the inlet of the second filter 312, and a second water inlet valve 421 is provided on the second water inlet pipe 315; one end of the second water outlet pipe 316 is connected to the outlet of the second filter 312, the other end of the second water outlet pipe 316 is connected to the connecting pipe 20, and a second water outlet valve 422 is provided on the second water outlet pipe 316.

[0061] The second filtration component 32 further includes a third water inlet pipe 323, a third water outlet pipe 324, a fourth water inlet pipe 325 and a fourth water outlet pipe 326.

[0062] One end of the third water inlet pipe 323 is connected to the connecting pipe 20, the other end of the third water inlet pipe 323 is connected to the inlet of the third filter 321, and a third water inlet valve 431 is provided on the third water inlet pipe 323; one end of the third water outlet pipe 324 is connected to the outlet of the third filter 321, the other end of the third water outlet pipe 324 is connected to the drain pipe 12, and a third water outlet valve 432 is provided on the third water outlet pipe 324.

[0063] One end of the fourth water inlet pipe 325 is communicated with the connecting pipe 20, and the other end of the fourth water inlet pipe 325 is communicated with the inlet of the fourth filter 322. A fourth water inlet valve 441 is arranged on the fourth water inlet pipe 325; one end of the fourth water outlet pipe 326 is communicated with the outlet of the fourth filter 322, and the other end of the fourth water outlet pipe 326 is communicated with the drain pipe 12. A fourth water outlet valve 442 is arranged on the fourth water outlet pipe 326.

[0064] With such an arrangement, the pipeline structure of the filtering device can be optimized, facilitating the assembly of the filtering device, with a simple structure and convenient operation.

[0065] As Figure 1 and Figure 3 shown, the filter has a slag discharge port. The filtering device further includes a slag discharge pipeline 60. The slag discharge pipeline 60 has a water inlet 61, a communication port and a water outlet 66 that are communicated with each other. The water inlet 61 is communicated with the drain pipe 12, the communication port is communicated with the slag discharge port, and the water outlet 66 is used for discharging impurities in the filter. With such an arrangement, the impurities filtered out by the filter can be discharged to a set position, facilitating the subsequent treatment of the impurities.

[0066] Specifically, in the present application, the slag discharge pipeline 60 has a first communication port 62, a second communication port 63, a third communication port 64 and a fourth communication port 65. The first filter 311 has a first slag discharge port, the second filter 312 has a second slag discharge port, the third filter 321 has a third slag discharge port, and the fourth filter 322 has a fourth slag discharge port. The first slag discharge port is connected to the first communication port 62, the second slag discharge port is connected to the second communication port 63, the third slag discharge port is connected to the third communication port 64, and the fourth slag discharge port is connected to the fourth communication port 65. With such an arrangement, the impurities filtered out by the four filters can be discharged uniformly, further facilitating the subsequent treatment of the impurities by the staff.

[0067] Among them, in the present application, the filter is a backwashing filter. In this way, during the slag discharge process, the filter can still carry out the filtering work. With such an arrangement, the filtering efficiency of the filtering device can be improved.

[0068] As Figure 2 shown, a pressure transmitter 70 is arranged between the inlet of the filter and the water injection pipe 11, or between the outlet of the filter and the drain pipe 12. In the present application, pressure transmitters 70 are arranged between the inlet of the filter and the water injection pipe 11 and between the outlet of the filter and the drain pipe 12. That is, pressure transmitters 70 are arranged on the first water inlet pipe 313, the first water outlet pipe 314, the second water inlet pipe 315, the second water outlet pipe 316, the third water inlet pipe 323, the third water outlet pipe 324, the fourth water inlet pipe 325 and the fourth water outlet pipe 326.

[0069] The filtering device further includes a control system. The pressure transmitter 70 is electrically connected to the control system, and the pressure transmitter 70 can transmit pressure data and position information to the control system.

[0070] When the difference between the pressure transmitters 70 on the first water inlet pipe 313 and the first water outlet pipe 314 is greater than the set threshold value, the control system gives an alarm and closes the first water inlet valve 411 and the first water outlet valve 412. With such a setting, the normal operation of the first filter 311 can be ensured, the working reliability of the first filter 311 can be improved, and at the same time, the accuracy of pipeline blockage detection can be improved.

[0071] The same applies to the second filter 312, the third filter 321, and the fourth filter 322, and details will not be repeated here.

[0072] Another embodiment of the present utility model provides a dust reduction device, which includes a water supply pipeline, a water filling frame, a first water pump, a second water pump 1, and the above-provided filtering device.

[0073] The water supply pipeline is connected to the water injection pipe 11, and the water filling frame is connected to the drain pipe 12. The first water pump is connected to the water supply pipeline to drive the liquid in the water supply pipeline to flow into the filtering device. The second water pump 1 is arranged between the drain pipe 12 and the water filling frame to drive the liquid in the drain pipe 12 to flow into the water filling frame, and the water filling frame is connected to the water tank of the sprinkler truck. With such a setting, the first water pump can drive the water in the reservoir into the water supply pipeline, and the second water pump 1 performs secondary pressurization on the filtered water, so that the filtered water can be pumped to a specified height, and then the water filling work of the sprinkler truck can be completed.

[0074] Among them, in this application, the water injection pipe 11 uses a DN200 water pipe, the first water pump is a submersible pump, and the second water pump 1 is a vertical multi-stage centrifugal pump.

[0075] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0076] Unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the description. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0077] In the description of the present utility model, it should be understood that orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. generally indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary statements, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present utility model; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0078] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above-mentioned", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0079] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above words have no special meanings. Therefore, it cannot be understood as a limitation on the protection scope of the present utility model.

[0080] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A filtering device, characterized in that, The filtering device includes: a water injection pipe (11) and a drain pipe (12); a connecting pipe (20), one end of the connecting pipe (20) is communicated with the water injection pipe (11), and the other end of the connecting pipe (20) is communicated with the drain pipe (12); a filtering assembly, the inlet and outlet of the filtering assembly are both communicated with the connecting pipe (20), and along the flow direction, the inlet and outlet of the filtering assembly are arranged in sequence; a control structure for controlling the communication between the filtering assembly and the water injection pipe (11) and the drain pipe (12).

2. The filtering device according to claim 1, characterized in that, The filtering device includes a plurality of filtering assemblies, and the plurality of filtering assemblies are arranged at intervals along the extending direction of the connecting pipe (20).

3. The filtering device according to claim 1, wherein, The filtering assembly has a plurality of filters, and the plurality of filters are arranged in parallel.

4. The filtering device according to claim 2, characterized in that, The filtering device further includes: a plurality of control valves (50), which are arranged in one-to-one correspondence with the plurality of filtering assemblies, the control valves (50) are arranged on the connecting pipe (20), and the control valves (50) are arranged between the inlet and outlet of the corresponding filtering assembly.

5. The filtering device according to claim 3, characterized in that, The control structure includes an inlet valve and an outlet valve, the inlet valve is arranged between the inlet of the filter and the water injection pipe (11), the outlet valve is arranged between the outlet of the filter and the drain pipe (12), and the inlet valve and the outlet valve cooperate to control the communication between the filter and the water injection pipe (11) and the drain pipe (12).

6. The filtering device according to claim 2, characterized in that, The filtering device includes a first filtering assembly (31) and a second filtering assembly (32), the first filtering assembly (31) includes a first filter (311) and a second filter (312), the inlets of the first filter (311) and the second filter (312) are both communicated with the water injection pipe (11), the outlets of the second filter (312) and the second filter (312) are both communicated with the connecting pipe (20), the second filtering assembly (32) includes a third filter (321) and a fourth filter (322), the inlets of the third filter (321) and the fourth filter (322) are both communicated with the connecting pipe (20), and the outlets of the third filter (321) and the fourth filter (322) are both communicated with the drain pipe (12).

7. The filtering device according to claim 6, wherein The first filtering component (31) further includes a first water inlet pipe (313), a first water outlet pipe (314), a second water inlet pipe (315), and a second water outlet pipe (316). One end of the first water inlet pipe (313) is communicated with the water injection pipe (11), and the other end of the first water inlet pipe (313) is communicated with the inlet of the first filter (311). A first water inlet valve (411) is arranged on the first water inlet pipe (313); One end of the first water outlet pipe (314) is communicated with the outlet of the first filter (311), and the other end of the first water outlet pipe (314) is communicated with the connecting pipe (20). A first water outlet valve (412) is arranged on the first water outlet pipe (314); One end of the second water inlet pipe (315) is communicated with the water injection pipe (11), and the other end of the second water inlet pipe (315) is communicated with the inlet of the second filter (312). A second water inlet valve (421) is arranged on the second water inlet pipe (315); One end of the second water outlet pipe (316) is communicated with the outlet of the second filter (312), and the other end of the second water outlet pipe (316) is communicated with the connecting pipe (20). A second water outlet valve (422) is arranged on the second water outlet pipe (316); The second filtering component (32) further includes a third water inlet pipe (323), a third water outlet pipe (324), a fourth water inlet pipe (325), and a fourth water outlet pipe (326). One end of the third water inlet pipe (323) is communicated with the connecting pipe (20), and the other end of the third water inlet pipe (323) is communicated with the inlet of the third filter (321). A third water inlet valve (431) is arranged on the third water inlet pipe (323); One end of the third water outlet pipe (324) is communicated with the outlet of the third filter (321), and the other end of the third water outlet pipe (324) is communicated with the drain pipe (12). A third water outlet valve (432) is arranged on the third water outlet pipe (324); One end of the fourth water inlet pipe (325) is communicated with the connecting pipe (20), and the other end of the fourth water inlet pipe (325) is communicated with the inlet of the fourth filter (322). A fourth water inlet valve (441) is arranged on the fourth water inlet pipe (325); One end of the fourth water outlet pipe (326) is communicated with the outlet of the fourth filter (322), and the other end of the fourth water outlet pipe (326) is communicated with the drain pipe (12). A fourth water outlet valve (442) is arranged on the fourth water outlet pipe (326).

8. The filtering device according to claim 3, characterized in that, The filter has a slag discharge port. The filtering device further includes a slag discharge pipeline (60). The slag discharge pipeline (60) has a water inlet (61), a communication port, and a water outlet (66) that are communicated with each other. The water inlet (61) is communicated with the drain pipe (12), the communication port is communicated with the slag discharge port, and the water outlet (66) is used for discharging impurities in the filter.

9. The filtering device according to claim 3, characterized in that, A pressure transmitter (70) is provided between the inlet of the filter and the water injection pipe (11), and / or between the outlet of the filter and the drain pipe (12).

10. A dust reduction device, characterized in that, The dust suppression device includes a water supply pipeline, a water addition rack, a first water pump, a second water pump (1), and the filtering device according to any one of claims 1 to 9. The water supply pipeline is communicated with the water injection pipe (11), the water addition rack is communicated with the drain pipe (12), the first water pump is communicated with the water supply pipeline to drive the liquid in the water supply pipeline to flow into the filtering device; the second water pump (1) is arranged between the drain pipe (12) and the water addition rack to drive the liquid in the drain pipe (12) to flow into the water addition rack.

Images