WO2024131902A1 - Dust removal mechanism - Google Patents

Abstract

A dust removal mechanism, comprising a pre-filtration component, separation devices (20), and a negative pressure generation component (30). The pre-filtration component comprises a dust collection member (11), and the dust collection member (11) is provided with a dust collection channel (111) and a discharge port (112) in communication with the dust collection channel (111); each separation device (20) is provided a separation channel (201), a gas inlet (202), a dust discharge port (203), and a gas outlet (204), gas with dust is separated into two parts in the separation channel (201), the two parts of the gas are respectively a clean gas portion and a gas portion with dust, and the clean gas portion and the gas portion with dust are respectively discharged from the gas outlet (204) and the dust discharge port (203); the negative pressure generation component (30) is provided with a preset communication port, and the preset communication port is in communication with the gas outlet (204), so that under the action of the negative pressure generation component (30), the gas in the separation channel (201) flows from the gas inlet (202) to the gas outlet (204). The dust removal mechanism solves the problem of poor purging effect in the existing manners of purging dust in inertial separators.

Description

Dust removal mechanism

This application claims priority to a patent application filed with the State Intellectual Property Office of China on December 21, 2022, with application number 202223545464.X and application name “Dust Removal Mechanism”.

Technical Field

The present application relates to the technical field of inertial separator dust removal, and in particular to a dust removal mechanism.

Background technique

With the development of fracturing equipment technology, fracturing equipment using turbine engines as power sources has emerged.

Compared with traditional diesel engines, turbine engines have advantages such as high single-machine power density and the ability to use 100% natural gas as fuel to reduce construction costs.

Before the gas enters the turbine engine, it needs to be filtered through filtering components such as an air pre-filter or an inertial separator; and after the inertial separator is filtered, the dust generated during the internal filtration must be blown and cleaned.

However, the existing method of blowing away the dust inside the inertial separator has the problem of poor blowing effect.

Summary of the invention

The main purpose of the present application is to provide a dust removal mechanism to solve the problem of poor blowing effect of the dust inside the inertial separator in the prior art.

In order to achieve the above-mentioned purpose, the present application provides a dust removal mechanism, which includes: a pre-filter component, the pre-filter component includes a dust collecting component, the dust collecting component has a dust collecting channel and an exhaust port connected to the dust collecting channel; a separation device, the separation device has a separation channel, an air inlet, a dust exhaust port and an exhaust port, the air inlet, the dust exhaust port and the exhaust port are all connected to the separation channel; the air inlet is connected to the exhaust port; the dust exhaust port and the exhaust port are independently arranged; the dust-carrying gas is separated into two parts of gas in the separation channel, the two parts of gas are a clean gas part and a dust-carrying gas part, and the clean gas part and the dust-carrying gas part are discharged from the exhaust port and the dust exhaust port respectively; a negative pressure generating component, the negative pressure generating component has a preset connecting port, and the preset connecting port is connected to the exhaust port, so that under the action of the negative pressure generating component, the gas in the separation channel flows in the direction from the air inlet to the exhaust port.

Furthermore, the separation device includes: a first cylinder extending in the vertical direction, the upper port of the first cylinder forming an air inlet; a separation component, the separation component is arranged in the first cylinder and is located near the upper port of the first cylinder; the separation component includes one or more spiral blades, the plurality of spiral blades are arranged in sequence around a preset axis, and the separation component is rotatably arranged around the preset axis; the preset axis coincides with or is parallel to the central axis of the first cylinder; a second cylinder extending in the vertical direction, the cylinder section of the second cylinder close to its upper port is passed through the lower port of the first cylinder in the first cylinder to form an annular dust exhaust space between the first cylinder and the second cylinder; the second cylinder is relatively fixed to the first cylinder; the lower port of the second cylinder forms an exhaust port, and the lower port of the dust exhaust space forms a dust exhaust port.

Further, the dust removal mechanism includes a separation unit, and the separation unit includes one or more separation devices; when the separation unit includes one separation device, the air inlet of the separation device is the air inlet of the separation unit, and the exhaust port of the separation device is the exhaust port of the separation unit; when the separation unit includes multiple separation devices, the multiple separation devices are arranged in sequence; two adjacent separation devices are respectively the upper separation device and the lower separation device, and the exhaust port of the upper separation device is connected with the air inlet of the lower separation device; the air inlet of the separation device located in the first sequence among the multiple separation devices is the air inlet of the separation unit, and the exhaust port of the separation device located in the last sequence among the multiple separation devices is the exhaust port of the separation unit; a pre-filter component is arranged corresponding to at least one separation unit, and the air inlet of each separation unit in at least one separation unit is connected with the exhaust port of the pre-filter component; and/or a negative pressure generating component is arranged corresponding to at least one separation unit, and the exhaust port of each separation unit in at least one separation unit is connected with the preset connecting port of the negative pressure generating component.

Furthermore, the dust removal mechanism also includes a second connecting pipeline for introducing the atmosphere, and the second connecting pipeline can be set to be on and off; one pipe opening of the second connecting pipeline is connected to a preset connecting port of the negative pressure generating component.

Furthermore, the exhaust port and the preset connecting port are connected through a first connecting pipeline, and the first connecting pipeline includes a first pipe segment and a second pipe segment that are connected and connected to each other; the pipe opening of the first pipe segment away from the second pipe segment is connected to the exhaust port, and the pipe opening of the second pipe segment away from the first pipe segment is connected to the preset connecting port; the first pipe opening of the second connecting pipeline is an atmospheric inlet, and the second pipe opening of the second connecting pipeline is connected and connected to the connecting position of the first pipe segment and the second pipe segment.

Furthermore, the negative pressure generating component is an air compressor; the exhaust port and the preset connecting port are connected through a first connecting pipeline, and the dust removal mechanism also includes an air filter arranged on the first connecting pipeline.

Furthermore, the negative pressure generating component includes a ventilation cavity, a ventilation inlet, a ventilation outlet and a fan, and the ventilation inlet and the ventilation outlet are both connected to the ventilation cavity; the ventilation inlet forms a preset connecting port; and the fan is arranged at the ventilation inlet or the ventilation outlet.

Furthermore, when the fan is arranged at the ventilation outlet, the dust removal mechanism also includes a second connecting pipe for letting in the atmosphere, and the second connecting pipe can be set to be on and off; there are two ventilation inlets, and the two ventilation inlets respectively form two preset connecting ports; one of the two ventilation inlets is used to connect with the exhaust port, and the other ventilation inlet is used to connect with a pipe opening of the second connecting pipe.

Furthermore, the negative pressure generating component is a venturi tube included in the exhaust pipe of the engine.

Furthermore, the dust collection channel includes a first channel section, a second channel section and a third channel section arranged in sequence along its extension direction, and the first channel section and the third channel section are both cylindrical channel sections; along the direction from the first channel section to the third channel section, the cross-section of the second channel section perpendicular to its extension direction gradually decreases; and/or the pre-filter component is an inertial separator.

The technical solution of the present application is applied, the dust removal mechanism comprises a pre-filter component, a separation device and a negative pressure generating component; the pre-filter component comprises a dust collecting component, the dust collecting component has a dust collecting channel and an exhaust port connected with the dust collecting channel, so that the gas with dust in the dust collecting channel can be discharged through the exhaust port; the separation device comprises a separation channel, an air inlet, a dust exhaust port and an exhaust port, and the air inlet, the dust exhaust port and the exhaust port are all connected with the separation channel; the air inlet is connected with the exhaust port, so that the dust-carrying gas discharged from the exhaust port enters the separation channel through the air inlet; the dust exhaust port and the exhaust port are independently arranged; the dust-carrying gas entering the separation channel is separated into two parts of gas in the separation channel, and the two parts of gas are respectively a clean gas part and a dust-carrying gas part, and the clean gas part and the dust-carrying gas part are discharged from the exhaust port and the dust exhaust port respectively; the negative pressure generating component The generating component has a preset connecting port, which is connected to the exhaust port, so that the negative pressure generating component can generate a suction force on the gas in the separation channel, that is, under the suction action of the negative pressure generating component, the gas containing dust entering the separation channel flows in the direction from the air inlet to the exhaust port.

Specifically, the pre-filter component is an inertial separator; the inertial separator also includes a shell and a filter element, the filter element is arranged in the shell, the dust-containing medium enters the inertial separator and is filtered through the filter element, and the dust generated by the filter element during the filtering process falls into the bottom of the shell; the lower part of the inertial separator is provided with a purge gas inlet, and the purge gas entering the shell through the purge gas inlet is used to purge the dust at the bottom of the shell, so as to blow the dust into the dust collecting part and discharge it through the dust collecting part. In the prior art, when the dust at the bottom of the shell is purged, a part of the purge gas will enter the filter element, resulting in a continuous decrease in the amount of the purge gas, that is, the purge gas entering the shell from the purge gas inlet is lost, resulting in a gradual decrease in the amount of gas from the purge gas inlet to the dust collecting part, thereby causing part of the dust to be unable to be blown into the dust collecting part and discharged through the dust collecting part, but instead causing the dust to gradually gather at the dust collecting part, resulting in a poor purging effect. The dust removal mechanism of the present application can generate a suction force in the shell by setting a negative pressure generating component, thereby avoiding or reducing the loss of the purge gas entering from the purge gas inlet, so that the purge gas entering from the purge gas inlet can purge more dust at the bottom of the shell, so as to ensure the purge gas volume of the dust at the bottom of the shell, and then ensure that the dust at the bottom of the shell is blown into the dust collecting part and discharged through the dust collecting part; and due to the setting of the negative pressure generating component, the air volume at the dust collecting part is larger, which further ensures that the dust can be discharged from the dust collecting part; thereby ensuring the purging effect and improving the dust deposition problem in the shell.

In addition, since the negative pressure generating component can generate suction force inside the shell, the dust in the middle part of the shell can be brought to the bottom to prevent dust from accumulating in the middle part, thereby enhancing the dust cleaning effect inside the shell and improving the dust deposition problem inside the shell.

It can be seen that the dust removal mechanism of the present application solves the problem of poor blowing effect in the prior art method of blowing dust inside the inertial separator.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings constituting part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

FIG1 shows a schematic structural diagram of a dust removal mechanism according to the present application; wherein a pre-filter component is provided corresponding to a separation unit, and a negative pressure generating component is provided corresponding to a separation unit;

FIG2 shows a schematic structural diagram of a dust removal mechanism according to the present application; wherein a pre-filter component is provided corresponding to a plurality of separation units, and a negative pressure generating component is provided corresponding to a plurality of separation units;

FIG3 shows a schematic structural diagram of a dust removal mechanism according to the present application; wherein a pre-filter component is provided corresponding to a separation unit, and a negative pressure generating component is provided corresponding to a plurality of separation units;

FIG4 shows a schematic structural diagram of a separation device of a dust removal mechanism according to the present application;

FIG5 is a schematic structural diagram of a separation component of a separation device of a dust removal mechanism according to the present application;

FIG6 shows a schematic structural diagram of a dust removal mechanism according to the present application; wherein the negative pressure generating component is an air compressor, and no second connecting pipeline is provided;

FIG7 shows a schematic structural diagram of a dust removal mechanism according to the present application; wherein the negative pressure generating component is an air compressor, and a second connecting pipeline is provided;

FIG8 shows a schematic structural diagram of a dust removal mechanism according to the present application; wherein the negative pressure generating component is a cabin ventilation device, a fan is provided at the ventilation inlet, and no second connecting pipeline is provided;

FIG9 shows a schematic structural diagram of a dust removal mechanism according to the present application; wherein the negative pressure generating component is a cabin ventilation device, a fan is provided at a ventilation inlet, and a second connecting pipeline is provided;

FIG10 shows a schematic structural diagram of a dust removal mechanism according to the present application; wherein the negative pressure generating component is a cabin ventilation device, the fan is arranged at the ventilation outlet, and no second connecting pipeline is arranged;

FIG11 shows a schematic structural diagram of a dust removal mechanism according to the present application; wherein the negative pressure generating component is a cabin ventilation device, a fan is provided at the ventilation outlet, and a second connecting pipeline is provided;

FIG12 shows a schematic structural diagram of a dust removal mechanism according to the present application; wherein the negative pressure generating component is a cabin ventilation device, a fan is provided at a ventilation outlet, two ventilation inlets are provided, and a second connecting pipeline is provided;

FIG13 shows a schematic structural diagram of a dust removal mechanism according to the present application; wherein the negative pressure generating component is a venturi tube included in the exhaust pipe of the piston engine, and no second connecting pipeline is provided;

FIG14 shows a schematic structural diagram of a dust removal mechanism according to the present application; wherein the negative pressure generating component is a venturi tube included in the exhaust pipe of the piston engine, and a second connecting pipeline is provided;

FIG15 shows a schematic structural diagram of a dust removal mechanism according to the present application; wherein the negative pressure generating component is a venturi tube included in the exhaust pipe of the turbine engine, and no second connecting pipeline is provided;

FIG16 shows a schematic structural diagram of a dust removal mechanism according to the present application; wherein the negative pressure generating component is a venturi tube included in the exhaust pipe of the turbine engine, and a second connecting pipeline is provided;

FIG17 shows a schematic structural diagram of an inertial separator of a dust removal mechanism according to the present application;

FIG. 18 shows a schematic structural diagram of a dust collecting component of a pre-filter component of a dust removal mechanism according to the present application.

The above drawings include the following reference numerals:
10. Inertial separator; 11. Dust collecting part; 111. Dust collecting channel; 112. Exhaust port; 113. First channel section; 114.
second channel section; 115, third channel section; 116, air inlet port; 12, filter element; 13, purge gas inlet; 14, housing;
20. Separation device; 201. Separation channel; 202. Air inlet; 203. Dust outlet; 204. Exhaust outlet; 21. First cylinder; 22. Separation component; 221. Spiral blade; 23. Second cylinder; 231. First cylinder section; 232. Second cylinder section; 24. Dust outlet space;
30. Negative pressure generating component; 31. Air compressor; 321. Ventilation chamber; 322. Ventilation inlet; 323. Ventilation outlet;
324, fan; 33, venturi tube; 330, exhaust pipe; 331, turbine engine; 332, piston engine;
41. first pipeline; 42. second pipeline; 43. third pipeline; 44. fourth pipeline; 45. fifth pipeline; 50. air filter; 61. first connecting pipeline; 611. first pipe section; 612. second pipe section; 62. second connecting pipeline; 621. on-off valve;
300. Dust.

Detailed ways

It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

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

The present application provides a dust removal mechanism, please refer to Figures 1 to 18, the dust removal mechanism includes a pre-filter component, a separation device 20 and a negative pressure generating component 30; the pre-filter component includes a dust collecting component 11, the dust collecting component 11 has a dust collecting channel 111 and an exhaust port 112 connected to the dust collecting channel 111, so that the gas with dust in the dust collecting channel 111 is discharged through the exhaust port 112; the separation device 20 has a separation channel 201, an air inlet 202, a dust exhaust port 203 and an exhaust port 204, the air inlet 202, the dust exhaust port 203 and the exhaust port 204 are all connected to the separation channel 201; the air inlet 202 is connected to the exhaust port 112, so that the gas with dust discharged from the exhaust port 112 enters the vacuum cleaner through the air inlet 202. In the separation channel 201; the dust outlet 203 and the exhaust port 204 are independently arranged; the dust-laden gas entering the separation channel 201 is separated into two parts of gas in the separation channel 201, and the two parts of gas are respectively a clean gas part and a dust-laden gas part, and the clean gas part and the dust-laden gas part are discharged from the exhaust port 204 and the dust outlet 203 respectively; the negative pressure generating component 30 has a preset connecting port, and the preset connecting port is connected with the exhaust port 204, so that the negative pressure generating component 30 generates a suction force on the gas in the separation channel 201, that is, under the suction action of the negative pressure generating component 30, the dust-laden gas entering the separation channel 201 flows in the direction from the air inlet 202 to the exhaust port 204.

Specifically, the pre-filter component is an inertial separator 10; the inertial separator is also called a momentum separator, which uses the inertia of particles or droplets entrained in the airflow to achieve separation.

As shown in FIG. 17 , the inertial separator 10 further includes a housing 14 and a filter element 12. The filter element 12 is disposed in the housing 14. The dust-containing medium enters the inertial separator 10 and is filtered by the filter element 12. The dust generated by the filter element 12 during the filtering process falls into the bottom of the housing 14. A purge gas inlet 13 is disposed at the lower portion of the inertial separator 10. The purge gas entering the housing 14 through the inlet 13 is used to purge the dust at the bottom of the housing 14, so as to blow the dust into the dust collecting part 11 and discharge it through the dust collecting part 11. In the prior art, when the dust at the bottom of the housing 14 is purged, a part of the purge gas enters the filter 12, resulting in a continuous decrease in the amount of the purge gas, that is, the purge gas entering the housing 14 from the purge gas inlet 13 is lost, resulting in a gradual decrease in the amount of gas from the purge gas inlet 13 to the dust collecting part 11, thereby causing part of the dust to be unable to be blown into the dust collecting part 11 and discharged through the dust collecting part 11, but instead causing the dust to gradually gather at the dust collecting part 11, resulting in a poor purging effect. The dust removal mechanism of the present application can generate a suction force in the shell 14 by setting a negative pressure generating component 30, thereby avoiding or reducing the loss of the purge gas entering from the purge gas inlet 13, so that the purge gas entering from the purge gas inlet 13 can purge more dust at the bottom of the shell 14, so as to ensure the purge gas volume for the dust at the bottom of the shell 14, and further ensure that the dust at the bottom of the shell 14 is blown into the dust collecting part 11 and discharged through the dust collecting part 11; and due to the setting of the negative pressure generating component 30, the air volume at the dust collecting part 11 is larger, which further ensures that the dust can be discharged from the dust collecting part 11; thereby ensuring the purge effect and improving the dust deposition problem in the shell 14.

In addition, since the negative pressure generating component 30 can generate suction force inside the shell 14, the dust in the middle part of the shell 14 can be brought to the bottom to prevent the dust from accumulating in the middle part, thereby enhancing the dust cleaning effect inside the shell 14 and improving the dust deposition problem inside the shell 14.

It can be seen that the dust removal mechanism of the present application solves the problem of poor blowing effect in the prior art method of blowing dust inside the inertial separator.

The separation device 20 is used to filter and separate the gas containing dust entering the separation channel 201 to avoid causing serious pollution to the negative pressure generating component 30 or increasing the burden of subsequent filtering.

Optionally, the filter element 12 is a filter tube.

In this embodiment, as shown in Figures 4 and 5, the separation device 20 includes a first barrel 21, a separation component 22 and a second barrel 23, and the first barrel 21 and the second barrel 23 are both extended in the vertical direction; the upper port of the first barrel 21 forms an air inlet 202 of the separation device 20, and the barrel cavity of the first barrel 21 forms a separation channel 201; the separation component 22 is arranged in the first barrel 21 and is located near the upper port of the first barrel 21; the separation component 22 includes one or more spiral blades 221, and the plurality of spiral blades 221 are sequentially arranged around a preset axis, and the separation component 22 is rotatably arranged around the preset axis; the preset axis coincides with or is parallel to the central axis of the first barrel 21; the barrel section of the second barrel 23 close to its upper port is inserted into the first barrel 21 from the lower port of the first barrel 21, so that an annular dust exhaust space 24 is formed between the first barrel 21 and the second barrel 23; the second barrel 23 is relatively fixed to the first barrel 21; the lower port of the second barrel 23 forms an exhaust port 204, and the lower port of the dust exhaust space 24 forms a dust exhaust port 203. Since the upper port of the second barrel 23 must be located in the first barrel 21, the upper port of the second barrel 23 must be communicated with the barrel cavity of the first barrel 21, and then the lower port of the second barrel 23 is communicated with the barrel cavity of the first barrel 21.

After the dust-laden gas enters the first cylinder 21, the separation component 22 rotates around the preset axis, and the dust-laden gas, under the action of the spiral blades 221 of the separation component 22, spirally moves forward around the central axis of the first cylinder 21; wherein, since the dust is heavy, the dust, under the action of its own gravity and inertia, spirally moves forward along the inner wall close to the first cylinder 21, enters the annular dust exhaust space 24, and is then discharged from the dust exhaust port 203; the dust-laden gas entering the annular dust exhaust space 24 is the upper The above-mentioned gas part with dust; the clean gas part enters the second cylinder 23, and then is discharged from the lower port of the second cylinder 23, so as to separate the dust. FIG4 shows the dust 300 discharged from the dust discharge port 203.

Specifically, the second barrel 23 includes a first barrel section 231 and a second barrel section 232 which are connected to each other along its extension direction. The first barrel section 231 is located above the second barrel section 232. The first barrel section 231 is inserted into the first barrel 21, and an annular dust exhaust space 24 is formed between the first barrel section 231 and the first barrel 21; the lower port of the second barrel section 232 is the lower port of the second barrel 23, and the upper port of the first barrel section 231 is the upper port of the second barrel 23.

Specifically, the central axis of the second cylinder 23 coincides with or is parallel to the central axis of the first cylinder 21 .

In this embodiment, as shown in FIG. 1 to FIG. 3 , the dust removal mechanism includes a separation unit, and the separation unit includes one or more separation devices 20. When the separation unit includes one separation device 20, the air inlet 202 of the separation device 20 is the air inlet of the separation unit, and the exhaust port 204 of the separation device 20 is the exhaust port of the separation unit. When the separation unit includes multiple separation devices 20, the multiple separation devices 20 of the separation unit are arranged in sequence, that is, the multiple separation devices 20 of the separation unit are arranged in series. For each separation unit, two adjacent separation devices 20 in the multiple separation devices 20 are respectively the upper separation device and the lower separation device. According to the arrangement sequence of the multiple separation devices 20, the upper separation device is located upstream of the lower separation device; the exhaust port 204 of the upper separation device is connected to the air inlet 202 of the lower separation device; the air inlet 202 of the first separation device 20 in the multiple separation devices 20 is the air inlet of the separation unit, and the exhaust port 204 of the last separation device 20 in the multiple separation devices 20 is the exhaust port of the separation unit.

Specifically, as shown in Figures 1 to 3, a pre-filter component is arranged corresponding to at least one separation unit, and the air inlet of each separation unit in the at least one separation unit is connected to the discharge port 112 of the pre-filter component. When the pre-filter component is arranged corresponding to multiple separation units, the multiple separation units are arranged in parallel. Further, the air inlet of each separation unit in the at least one separation unit is connected to the discharge port 112 of the pre-filter component through the second pipeline 42.

When a pre-filter component is arranged corresponding to a separation unit, there is one second pipeline 42, and the air inlet of the separation unit is connected to the exhaust port 112 of the pre-filter component through the second pipeline 42; alternatively, the exhaust port 112 of the pre-filter component can be directly connected and connected to the air inlet of the separation unit, for example, the exhaust port 112 of the pre-filter component is connected to the air inlet of the separation unit by docking.

When a pre-filter component is provided corresponding to a plurality of separation units, there are a plurality of second pipelines 42, and the plurality of second pipelines 42 are provided one-to-one corresponding to the plurality of separation units, and the air inlet of each separation unit is connected to the discharge port 112 of the pre-filter component through the corresponding second pipeline 42. Further, the dust removal mechanism further includes a fourth pipeline 44, and the plurality of second pipelines 42 are connected and communicated with one pipe opening of the fourth pipeline 44, and the other pipe opening of the fourth pipeline 44 is connected and communicated with the discharge port 112 of the pre-filter component.

Specifically, as shown in Figures 1 to 3, a negative pressure generating component 30 is arranged corresponding to at least one separation unit, and the exhaust port of each separation unit in the at least one separation unit is connected to the preset communication port of the negative pressure generating component 30. When the negative pressure generating component 30 is arranged corresponding to multiple separation units, the multiple separation units are arranged in parallel. Further, the exhaust port of each separation unit in the at least one separation unit is connected to the preset communication port of the negative pressure generating component 30 through a third pipeline 43.

When one negative pressure generating component 30 is provided corresponding to one separation unit, there is one third pipeline 43 , and the exhaust port of the separation unit is connected to the preset communication port of the negative pressure generating component 30 through the third pipeline 43 .

When a negative pressure generating component 30 is provided corresponding to a plurality of separation units, there are a plurality of third pipelines 43, and the plurality of third pipelines 43 are provided one-to-one corresponding to the plurality of separation units, and the exhaust port of each separation unit is connected to the preset communication port of the negative pressure generating component 30 through the corresponding third pipeline 43. Further, the dust removal mechanism further includes a fifth pipeline 45, and the plurality of third pipelines 43 are all connected and communicated with one pipe port of the fifth pipeline 45, and the other pipe port of the fifth pipeline 45 is connected and communicated with the preset communication port of the negative pressure generating component 30.

Specifically, when the separation unit includes a plurality of separation devices 20 , in each separation unit, the exhaust port 204 of the upper separation device is communicated with the intake port 202 of the lower separation device through the first pipeline 41 .

In this embodiment, the exhaust port 204 of the separation device 20 and the preset communication port of the negative pressure generating component 30 are connected through the first connecting pipeline 61 .

Specifically, when one negative pressure generating component 30 is provided corresponding to one separation unit, the third pipeline 43 forms the first connection pipeline 61. When one negative pressure generating component 30 is provided corresponding to a plurality of separation units, the fifth pipeline 45 forms the first connection pipeline 61.

In this embodiment, as shown in Figures 7, 9, 11 and 12, the dust removal mechanism further includes a second connecting pipeline 62 for introducing the atmosphere, and the second connecting pipeline 62 can be set to be on and off; the first pipe opening of the second connecting pipeline 62 is an atmospheric inlet, and the second pipe opening of the second connecting pipeline 62 is connected to the preset connecting port of the negative pressure generating component 30. The purpose of setting the second connecting pipeline 62 is to balance the difference in gas volume.

Specifically, an on-off valve 621 is provided on the second connecting pipeline 62 to control the on-off state of the second connecting pipeline 62 through the on-off valve 621 .

Specifically, as shown in Figures 7, 9 and 11, along the extension direction of the first connecting pipeline 61, the first connecting pipeline 61 includes a first pipe segment 611 and a second pipe segment 612 that are connected and communicated with each other; the pipe opening of the first pipe segment 611 away from the second pipe segment 612 is communicated with the exhaust port 204, and the pipe opening of the second pipe segment 612 away from the first pipe segment 611 is communicated with a preset communication port; the second pipe opening of the second connecting pipeline 62 is connected and communicated with the connecting position of the first pipe segment 611 and the second pipe segment 612, that is, the second connecting pipeline 62 is arranged in parallel with the first pipe segment 611.

In this embodiment, there are multiple negative pressure generating components 30, and each negative pressure generating component 30 is used to be arranged corresponding to at least one separation unit.

In this embodiment, a first structural form of the negative pressure generating component 30 is as shown in FIG. 6 and FIG. 7 , the negative pressure generating component 30 is an air compressor 31 .

Specifically, the exhaust port 204 is connected to the preset communication port through a first connecting pipe 61, and the dust removal mechanism further includes an air filter 50 disposed on the first connecting pipe 61 to further filter the gas that will enter the air compressor 31, thereby ensuring the cleanliness of the compressed gas entering the air compressor 31. Furthermore, the air filter 50 is disposed on the second pipe section 612.

In this embodiment, the second structural form of the negative pressure generating component 30 is: as shown in Figures 8 to 12, the negative pressure generating component 30 is a cabin ventilation device, and the negative pressure generating component 30 includes a ventilation cavity 321, a ventilation inlet 322, a ventilation outlet 323 and a fan 324, and the ventilation inlet 322 and the ventilation outlet 323 are both connected to the ventilation cavity 321; the ventilation inlet 322 forms a preset connecting port; the fan 324 is arranged at the ventilation inlet 322 or the ventilation outlet 323.

It should be noted that when the fan 324 is arranged at the ventilation inlet 322, the fan 324 generates a blowing force in the ventilation cavity 321, so that the gas entering the ventilation cavity 321 from the ventilation inlet 322 flows to the ventilation outlet 323, and at this time, the ventilation cavity 321 is positive pressure ventilation; because the gas in the ventilation cavity 321 flows from the ventilation inlet 322 to the ventilation outlet 323, under the action of the fan 324, a suction force is also generated on the gas in the separation channel 201. When the fan 324 is arranged at the ventilation outlet 323, the fan 324 generates a suction force in the ventilation cavity 321, so that the gas entering the ventilation cavity 321 from the ventilation inlet 322 flows to the ventilation outlet 323, and at this time, the ventilation cavity 321 is negative pressure ventilation; because the gas in the ventilation cavity 321 flows from the ventilation inlet 322 to the ventilation outlet 323, under the action of the fan 324, a suction force is also generated on the gas in the separation channel 201.

Specifically, the dust removal mechanism also includes an air filter 50 arranged at the ventilation inlet 322 to further filter the gas that will enter the ventilation chamber 321; when a fan 324 is provided at the ventilation inlet 322, the air filter 50 is located upstream of the fan 324 along the gas flow direction at the ventilation inlet 322.

Specifically, the dust removal mechanism also includes an inlet silencing component arranged at the ventilation inlet 322 to silence the gas that will enter the ventilation chamber 321; along the gas flow direction at the ventilation inlet 322, the inlet silencing component is located downstream of the air filter 50; when a fan 324 is provided at the ventilation inlet 322, the inlet silencing component is located upstream of the fan 324 along the gas flow direction at the ventilation inlet 322.

Specifically, the dust removal mechanism further includes an outlet silencing component disposed at the ventilation outlet 323 to silence the gas to be discharged from the ventilation outlet 323. When a fan 324 is disposed at the ventilation outlet 323, the outlet silencing component is located downstream of the fan 324 along the gas flow direction at the ventilation outlet 323.

Specifically, as shown in Figure 12, when the fan 324 is set at the ventilation outlet 323, there are two ventilation inlets 322, that is, the negative pressure generating component 30 includes two ventilation inlets 322, and the two ventilation inlets 322 respectively form two preset connecting ports; one of the two ventilation inlets 322 is used to connect with the exhaust port 204, and the other ventilation inlet 322 is used to connect with a pipe opening of the second connecting pipe 62.

Further, the two ventilation inlets 322 are respectively a first ventilation inlet and a second ventilation inlet, the first ventilation inlet is connected to the exhaust port 204, that is, the first ventilation inlet and the exhaust port 204 are connected through the first connecting pipe 61; the second ventilation inlet is connected to the second pipe opening of the second connecting pipe 62. Optionally, an air filter 50 is provided at the second ventilation inlet.

Optionally, the fan 324 is an axial flow fan.

In this embodiment, the third structural form of the negative pressure generating component 30 is as shown in Figures 13 to 16, the negative pressure generating component 30 is a venturi tube 33 included in the exhaust pipe of the engine. That is, the exhaust pipe of the engine includes the venturi tube 33, and the venturi tube 33 forms the negative pressure generating component 30.

It should be noted that the venturi tube is a pipe that contracts first and then gradually expands. Specifically, a structure with a reduced flow surface is set in the exhaust pipe, and the gas discharged by the engine flows through this structure, and the flow velocity increases to generate negative pressure near the high-speed flowing gas.

Optionally, the engine is a piston engine 332 or a turbine engine 331 ; FIGS. 13 and 14 show an exhaust duct 330 of the piston engine 332 .

In this embodiment, as shown in FIG. 18 , the dust collecting channel 111 includes a first channel section 113, a second channel section 114 and a third channel section 115 which are sequentially arranged along the extension direction thereof, and the first channel section 113 and the third channel section 115 are both cylindrical channel sections; along the direction from the first channel section 113 to the third channel section 115, the cross section of the second channel section 114 perpendicular to the extension direction thereof gradually decreases, so the cross section of the first channel section 113 perpendicular to the extension direction thereof must be greater than the cross section of the third channel section 115 perpendicular to the extension direction thereof. Among them, the extension direction of the first channel section 113, the extension direction of the second channel section 114 and the extension direction of the third channel section 115 are all the same as the extension direction of the dust collecting channel 111.

Specifically, the dust collecting piece 11 has an air inlet port 116 connected to the dust collecting channel 111, the port of the first channel section 113 away from the second channel section 114 is the air inlet port 116 of the dust collecting channel 111, and the port of the third channel section 115 away from the second channel section 114 is the exhaust port 112 of the dust collecting channel 111; therefore, the cross-section at the air inlet port 116 of the dust collecting piece 11 must be larger than the cross-section at the exhaust port 112.

Specifically, the dust collecting channel 111 is extended in the vertical direction, the upper end of the dust collecting channel 111 is the air inlet port 116 thereof, and the lower end of the dust collecting channel 111 is the air outlet port 112 thereof.

From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

In the dust removal mechanism provided in the present application, the dust removal mechanism includes a pre-filter component, a separation device 20 and a negative pressure generating component 30; the pre-filter component includes a dust collecting component 11, and the dust collecting component 11 has a dust collecting channel 111 and an exhaust port 112 connected to the dust collecting channel 111, so that the gas with dust in the dust collecting channel 111 is discharged through the exhaust port 112; the separation device 20 has a separation channel 201, an air inlet 202, a dust exhaust port 203 and an exhaust port 204, and the air inlet 202, the dust exhaust port 203 and the exhaust port 204 are all connected to the separation channel 201; the air inlet 202 is connected to the exhaust port 112, so that the dust-carrying gas discharged from the exhaust port 112 enters the separation channel 2 through the air inlet 202 01; the dust outlet 203 and the exhaust port 204 are independently arranged; the dust-laden gas entering the separation channel 201 is separated into two parts of gas in the separation channel 201, and the two parts of gas are respectively a clean gas part and a dust-laden gas part, and the clean gas part and the dust-laden gas part are discharged from the exhaust port 204 and the dust outlet 203 respectively; the negative pressure generating component 30 has a preset connecting port, and the preset connecting port is connected with the exhaust port 204, so that the negative pressure generating component 30 generates a suction force on the gas in the separation channel 201, that is, under the suction action of the negative pressure generating component 30, the dust-laden gas entering the separation channel 201 flows in the direction from the air inlet 202 to the exhaust port 204.

Specifically, the pre-filter component is an inertial separator 10; the inertial separator 10 also includes a shell 14 and a filter element 12, the filter element 12 is arranged in the shell 14, the dust-containing medium enters the inertial separator 10 and is filtered through the filter element 12, and the dust generated by the filter element 12 during the filtering process falls into the bottom of the shell 14; a purge gas inlet 13 is provided at the lower part of the inertial separator 10, and the purge gas entering the shell 14 through the purge gas inlet 13 is used to purge the dust at the bottom of the shell 14, so as to blow the dust into the dust collecting element 11 and discharge it through the dust collecting element 11. In the prior art, when the dust at the bottom of the shell 14 is purged, a part of the purge gas will enter the filter element 12, resulting in a continuous decrease in the amount of the purge gas, that is, from the purge gas. The purge gas entering the shell 14 through the body inlet 13 is lost, resulting in a gradual reduction in the amount of gas from the purge gas inlet 13 to the dust collecting part 11, which in turn causes part of the dust to be unable to be blown into the dust collecting part 11 and discharged through the dust collecting part 11, but instead causes the dust to gradually gather at the dust collecting part 11, resulting in a poor purge effect. The dust removal mechanism of the present application can generate a suction force in the shell 14 by setting a negative pressure generating component 30, thereby avoiding or reducing the loss of the purge gas entering from the purge gas inlet 13, so that the purge gas entering from the purge gas inlet 13 can purge more dust at the bottom of the shell 14, so as to ensure the purge gas volume for the dust at the bottom of the shell 14, and then ensure that the dust at the bottom of the shell 14 is blown into the dust collecting part 11 and discharged through the dust collecting part 11; and due to the setting of the negative pressure generating component 30, the amount of gas at the dust collecting part 11 is large, which further ensures that the dust can be discharged from the dust collecting part 11; thereby ensuring the purge effect and improving the dust deposition problem in the shell 14.

In addition, since the negative pressure generating component 30 can generate suction force inside the shell 14, the dust in the middle part of the shell 14 can be brought to the bottom to prevent the dust from accumulating in the middle part, thereby enhancing the dust cleaning effect inside the shell 14 and improving the dust deposition problem inside the shell 14.

It can be seen that the dust removal mechanism of the present application solves the problem of poor blowing effect in the prior art method of blowing dust inside the inertial separator.

It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A dust removal mechanism, characterized by comprising:

   A pre-filter component, the pre-filter component comprising a dust collecting component (11), the dust collecting component (11) having a dust collecting channel (111) and a discharge port (112) communicating with the dust collecting channel (111);

   A separation device (20), the separation device (20) comprising a separation channel (201), an air inlet (202), a dust exhaust port (203) and an exhaust port (204); the air inlet (202), the dust exhaust port (203) and the exhaust port (204) are all in communication with the separation channel (201); the air inlet (202) is in communication with the exhaust port (112); the dust exhaust port (203) and the exhaust port (204) are independently arranged; the gas containing dust is separated into two gas portions in the separation channel (201), the two gas portions being a clean gas portion and a dust containing gas portion, the clean gas portion and the dust containing gas portion being discharged from the exhaust port (204) and the dust exhaust port (203) respectively;

   A negative pressure generating component (30), wherein the negative pressure generating component (30) has a preset communication port, wherein the preset communication port is connected to the exhaust port (204), so that under the action of the negative pressure generating component (30), the gas in the separation channel (201) flows in a direction from the air inlet (202) to the exhaust port (204).
2. The dust removal mechanism according to claim 1, characterized in that the separation device (20) comprises:

   a first cylinder (21) extending in a vertical direction, wherein an upper end of the first cylinder (21) forms the air inlet (202);

   a separation component (22), the separation component (22) being arranged in the first cylinder (21) and being located near an upper port of the first cylinder (21); the separation component (22) comprising one or more spiral blades (221), the plurality of spiral blades (221) being arranged in sequence around a preset axis, the separation component (22) being rotatably arranged around the preset axis; the preset axis being coincident with or parallel to a central axis of the first cylinder (21);

   A second cylinder (23) is extended in a vertical direction, and a cylinder section of the second cylinder (23) close to its upper port is passed through the lower port of the first cylinder (21) into the first cylinder (21), so that an annular dust exhaust space (24) is formed between the first cylinder (21) and the second cylinder (23); the second cylinder (23) is relatively fixed to the first cylinder (21); the lower port of the second cylinder (23) forms the exhaust port (204), and the lower port of the dust exhaust space (24) forms the dust exhaust port (203).
3. The dust removal mechanism according to claim 1 is characterized in that the dust removal mechanism comprises a separation unit, and the separation unit comprises one or more separation devices (20); when the separation unit comprises one separation device (20), the air inlet (202) of the separation device (20) is the air inlet of the separation unit, and the exhaust port (204) of the separation device (20) is the exhaust port of the separation unit; when the separation unit comprises a plurality of separation devices (20), the plurality of separation devices (20) are arranged in sequence; two adjacent separation devices (20) are respectively the upper separation device and the lower separation device, and the exhaust port (204) of the upper separation device is connected to the air inlet (202) of the lower separation device; the air inlet (202) of the first separation device (20) in the plurality of separation devices (20) is the air inlet of the separation unit, and the exhaust port (204) of the last separation device (20) in the plurality of separation devices (20) is the exhaust port of the separation unit;

   One of the pre-filter components is arranged corresponding to at least one of the separation units, and the air inlet of each of the at least one separation unit is connected to the discharge port (112) of the pre-filter component; and/or

   One of the negative pressure generating components (30) is arranged corresponding to at least one of the separation units, and the exhaust ports of each of the at least one separation unit are connected to the preset communication port of the negative pressure generating component (30).
4. The dust removal mechanism according to claim 1 is characterized in that the dust removal mechanism also includes a second connecting pipeline (62) for introducing the atmosphere, and the second connecting pipeline (62) can be set to be on and off; a pipe opening of the second connecting pipeline (62) is connected to a preset connecting port of the negative pressure generating component (30).
5. The dust removal mechanism according to claim 4 is characterized in that the exhaust port (204) and the preset connecting port are connected via a first connecting pipeline (61), and the first connecting pipeline (61) comprises a first pipe section (611) and a second pipe section (612) which are connected and connected to each other; the pipe opening of the first pipe section (611) away from the second pipe section (612) is connected to the exhaust port (204), and the pipe opening of the second pipe section (612) away from the first pipe section (611) is connected to the preset connecting port; the first pipe opening of the second connecting pipeline (62) is an atmospheric inlet, and the second pipe opening of the second connecting pipeline (62) is connected and connected to the connecting position of the first pipe section (611) and the second pipe section (612).
6. The dust removal mechanism according to claim 1 is characterized in that the negative pressure generating component (30) is an air compressor (31); the exhaust port (204) and the preset connecting port are connected via a first connecting pipe (61), and the dust removal mechanism also includes an air filter (50) arranged on the first connecting pipe (61).
7. The dust removal mechanism according to claim 1 is characterized in that the negative pressure generating component (30) includes a ventilation chamber (321), a ventilation inlet (322), a ventilation outlet (323) and a fan (324), the ventilation inlet (322) and the ventilation outlet (323) are both connected to the ventilation chamber (321); the ventilation inlet (322) forms the preset connecting port; and the fan (324) is arranged at the ventilation inlet (322) or the ventilation outlet (323).
8. The dust removal mechanism according to claim 7 is characterized in that, when the fan (324) is arranged at the ventilation outlet (323), the dust removal mechanism also includes a second connecting pipe (62) for introducing the atmosphere, and the second connecting pipe (62) can be set to be on and off; there are two ventilation inlets (322), and the two ventilation inlets (322) respectively form two preset connecting ports; one of the two ventilation inlets (322) is used to communicate with the exhaust port (204), and the other ventilation inlet (322) is used to communicate with a pipe opening of the second connecting pipe (62).
9. The dust removal mechanism according to claim 1 is characterized in that the negative pressure generating component (30) is a Venturi tube (33) included in the exhaust duct of the engine.
10. The dust removal mechanism according to claim 1 is characterized in that:

    The dust collecting channel (111) comprises a first channel section (113), a second channel section (114) and a third channel section (115) which are sequentially arranged along the extension direction thereof, wherein the first channel section (113) and the third channel section (115) are both columnar channel sections; along the direction from the first channel section (113) to the third channel section (115), the cross section of the second channel section (114) perpendicular to the extension direction thereof gradually decreases; and/or

    The pre-filter component is an inertial separator (10).