An inertial sand separator

Abstract

The present application relates to a kind of inertial sand remover, including exhaust duct, multiple sand guide units and fan, exhaust duct extends along X axis direction, multiple sand guide units are sequentially arranged in exhaust duct along X axis direction, there is first exhaust gap between adjacent two sand guide units, there is second exhaust gap between sand guide unit and the inner wall of exhaust duct, each sand guide unit is enclosed in exhaust duct and forms sand guide passage, sand guide passage extends along X axis direction, the ventilation area of multiple sand guide passages sequentially arranged along X axis direction gradually decreases, fan is used to drive air to sequentially pass through sand guide passage, first exhaust gap and second exhaust gap and then discharge.The inertial sand remover in the present application can separate sand in air with low resistance and low energy consumption.

Description

Technical Field

[0001] This invention relates to the field of air dust removal technology, and in particular to an inertial sand remover. Background Technology

[0002] Inertial dust collectors, also known as inertial desanders, primarily work by rapidly redirecting the air to be purified, either directly or with the aid of baffles. Due to inertia, dust particles cannot quickly change their trajectory, unlike airflow, thus achieving separation. Chinese utility model patents CN204709957U and CN208574346U disclose an inertial dust collector and a gas-solid separator, respectively. Both these inertial dust collectors and gas-solid separators employ a tortuous channel to filter dust. However, the tortuous channel design generally increases airflow resistance, requiring a higher-powered fan to drive the airflow and increasing the energy consumption of the inertial dust collector. How to separate airborne dust with low resistance and low energy consumption is a pressing technical problem in this field. Summary of the Invention

[0003] Therefore, the present invention provides an inertial sand separator that separates airborne sand and dust with low resistance and low energy consumption.

[0004] To solve the above-mentioned technical problems, the present invention provides an inertial sand separator, comprising:

[0005] An exhaust duct extends along the X-axis direction, with the negative X-axis end and the positive X-axis end being the first channel end and the second channel end, respectively, and both the first channel end and the second channel end having an open opening.

[0006] Multiple sand-guiding units are arranged sequentially along the X-axis in the exhaust duct. A second exhaust gap exists between the sand-guiding units and the inner wall of the exhaust duct, and a first exhaust gap exists between two adjacent sand-guiding units. Each sand-guiding unit cooperates with each other to form a sand-guiding channel within the exhaust duct. The sand-guiding channel extends along the X-axis, and the ventilation area of ​​the multiple sand-guiding channels arranged sequentially along the X-axis gradually decreases. The negative X-axis end and the positive X-axis end of the sand-guiding channel are the third channel end and the fourth channel end, respectively. The third channel end closest to the negative X-axis end, the third channel end facing the first exhaust gap, and the fourth channel end facing the first exhaust gap are all provided with open openings.

[0007] A fan is used to drive air to flow in the positive X-axis direction within the exhaust duct.

[0008] Furthermore, the sand guiding channel includes a variable diameter sand guiding section near the negative X-axis end and a straight hole sand guiding section near the positive X-axis end. The ventilation area of ​​the variable diameter sand guiding section gradually decreases along the positive X-axis direction, and the orthogonal projections of the various positions of the straight hole sand guiding section along the X-axis direction on the projection plane perpendicular to the X-axis direction overlap with each other.

[0009] Furthermore, the orthographic projections of the third channel end and the fourth channel end, which are facing the same first exhaust gap, on the projection plane in the vertical X-axis direction overlap each other.

[0010] Furthermore, both the exhaust duct and the sand guiding channel extend horizontally. The exhaust duct has two opposing side walls along the horizontal Y-axis. The sand guiding unit includes two first isolation parts arranged along the horizontal Y-axis. A second exhaust gap is formed between the two first isolation parts and the two side walls of the exhaust duct. The sand guiding channel is formed between the two first isolation parts.

[0011] Furthermore, the sand guiding channel extends horizontally, and the second exhaust gap is located above the sand guiding channel.

[0012] Furthermore, the top wall of the sand guiding channel is an inclined top surface, and the inclined top surfaces of multiple sand guiding channels are located on the same plane. The end of the third channel of the same sand guiding channel is higher than the end of the fourth channel, and the end of the third channel facing the same first exhaust gap is lower than the end of the fourth channel.

[0013] Furthermore, the exhaust duct has an upper and lower opposing top wall and bottom wall, and the sand guiding unit includes a second isolation part, which is disposed between the top wall and the bottom wall. The second isolation part forms an angle with the horizontal direction, and the negative X-axis end of the second isolation part is higher than its positive X-axis end. The second exhaust gap is between the second isolation part and the top wall, and the sand guiding channel is between the second isolation part and the bottom wall.

[0014] Furthermore, the first exhaust gap has its width along the X-axis, and the widths of the plurality of first exhaust gaps arranged sequentially along the positive X-axis decrease sequentially.

[0015] Furthermore, the inertial sand separator also includes an air inlet duct, which is connected to the end of the third channel closest to the negative X-axis direction.

[0016] Furthermore, the inertial sand remover also includes a sand discharge pipe, one end of which extends into the exhaust pipe and is connected to the sand guiding channel closest to the positive X-axis end, and the other end of which extends out of the exhaust pipe.

[0017] The technical solution of the present invention has the following advantages compared with the prior art:

[0018] 1) The inertial sand separator of the present invention includes an exhaust duct, multiple sand guiding units, and a fan. First, when dusty air passes through the sand guiding channel, the sand in the air will directly enter the next sand guiding channel under the action of inertia, while clean air will be discharged through the first exhaust gap and the second exhaust gap, thus achieving the effect of filtering out the sand in the air. Second, the resistance encountered by the clean air in the process of flowing from the first exhaust gap to the second exhaust gap is small, which can achieve the purpose of separating the sand in the air with low resistance and low energy consumption. Third, since clean air is continuously discharged during the air flow, the ventilation area of ​​the multiple sand guiding channels is set to gradually decrease, which can ensure the airflow speed in the subsequent sand guiding channels, so that the sand in the airflow has sufficient inertia to enter the next sand guiding channel.

[0019] 2) The inertial sand remover of the present invention includes a sand guiding channel comprising a variable diameter sand guiding section and a straight hole sand guiding section. The variable diameter sand guiding section can increase the airflow velocity in the sand guiding channel, and the straight hole sand guiding section guides the sand and dust discharged from the previous sand guiding channel to enter the next sand guiding channel directly along the X-axis direction.

[0020] 3) The inertial sand separator of the present invention has overlapping orthographic projections of the end of the third channel and the end of the fourth channel facing the same first exhaust gap, so that the clean air does not need to turn much during the flow from the first exhaust gap to the second exhaust gap, further reducing the resistance during the flow of clean air.

[0021] 4) The inertial sand remover of the present invention includes two first isolation parts, which can form a sand guiding channel and a second exhaust gap located on the side of the sand guiding channel;

[0022] 5) The inertial sand separator of the present invention has a sand guiding channel that extends horizontally and a second exhaust gap located above the sand guiding channel. Due to the weight of the sand, the amount of sand in the air entering the second exhaust gap is relatively small, thus improving the sand separation effect.

[0023] 6) The inertial sand separator of the present invention has an inclined top wall of the sand guiding channel. When the dust-laden airflow enters the sand guiding channel, the top wall of the sand guiding channel can cause the sand to move slightly downward. The sand is also affected by gravity during the movement. The sand moves in a parabolic motion. There can be a height difference between the end of the third channel and the end of the fourth channel facing the same first exhaust gap. This height difference further reduces the resistance encountered by the clean air during the exhaust process.

[0024] 7) The inertial sand remover of the present invention includes a sand guiding unit comprising a second isolation part, which can form a sand guiding channel and a second exhaust gap located above the sand guiding channel;

[0025] 8) In the inertial sand separator of the present invention, the width of the multiple first exhaust gaps gradually decreases, thereby gradually reducing the content of clean air discharged during the air flow process. This can avoid the influence of clean air discharge on the movement of sand and dust, ensure that the sand and dust have sufficient inertia, and guarantee the sand and dust removal effect of the inertial sand separator.

[0026] 9) The inertial sand separator described in the invention introduces dust-laden airflow into the sand guiding channel by setting an air inlet pipe, which facilitates the external connection of the inertial sand separator;

[0027] 10) The inertial sand separator of the present invention, by setting up a sand discharge pipe, facilitates the direct discharge of sand and dust in the inertial sand separator. Attached Figure Description

[0028] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0029] Figure 1 This is a top view of the inertial sand remover in Embodiment 1 of the present invention;

[0030] Figure 2 This is a schematic diagram of the sand-guiding unit in Embodiment 1 of the present invention;

[0031] Figure 3 This is a front view of the inertial sand separator in Embodiment 2 of the present invention;

[0032] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0033] Figure 5 This is a schematic diagram of the sand-guiding unit in Embodiment 2 of the present invention;

[0034] Figure 6 This is a front view of the inertial sand remover in Embodiment 3 of the present invention;

[0035] Figure 7 This is a top view of the inertial sand remover in Embodiment 4 of the present invention;

[0036] Figure 8 This is a front view of the inertial sand remover in Embodiment 5 of the present invention.

[0037] Explanation of reference numerals in the accompanying drawings: 1. Exhaust duct; 11. First exhaust gap; 12. Second exhaust gap; 2. Sand guiding unit; 21. Sand guiding channel; 211. Variable diameter sand guiding section; 212. Straight hole sand guiding section; 213. Inclined top surface; 22. First isolation section; 221. Variable diameter sand guiding section partition; 222. Straight hole sand guiding section partition; 23. Second isolation section; 3. Air inlet duct; 4. Sand discharge duct; 5. Fan; 6. Sand discharge fan. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0039] Example 1

[0040] See Figure 1 and Figure 2 As shown, this is an embodiment of the inertial sand remover provided by the present invention.

[0041] The aforementioned inertial sand separator includes:

[0042] The exhaust duct 1 extends along the X-axis direction. The negative X-axis end and the positive X-axis end of the exhaust duct are respectively the first channel end and the second channel end. Both the first channel end and the second channel end are provided with an opening.

[0043] Multiple sand guiding units 2 are arranged sequentially in the exhaust duct 1 along the X-axis. There is a first exhaust gap 11 between two adjacent sand guiding units 2, and a second exhaust gap 12 between the sand guiding unit 2 and the inner wall of the exhaust duct 1. Each sand guiding unit 2 cooperates with each other to form a sand guiding channel 21 in the exhaust duct 1. The sand guiding channel 21 extends along the X-axis. The ventilation area of ​​the multiple sand guiding channels 21 arranged sequentially along the X-axis gradually decreases. The negative X-axis end and the positive X-axis end of the sand guiding channel 21 are the third channel end and the fourth channel end, respectively. The third channel end closest to the negative X-axis end, the third channel end facing the first exhaust gap 11, and the fourth channel end facing the first exhaust gap 11 are all provided with open openings.

[0044] A fan (not shown in the figure) is used to drive air to flow in the positive X-axis direction within the exhaust duct.

[0045] The inner cavity of the exhaust duct 1 is divided into channel area A and channel area B, both extending along the X-axis. Channel area A is located to the side of channel area B and is the aforementioned second exhaust gap 12. The shape of the inner cavity of the exhaust duct 1 can be designed as needed; the cross-section of the inner cavity of the exhaust duct 1 can be rectangular, circular, or other shapes. Multiple sand guiding units 2 are disposed in the aforementioned channel area B. The sand guiding unit 2 itself encloses a sand guiding channel 21, or it encloses a sand guiding channel 21 with the wall of the exhaust duct 1. To achieve ventilation requirements, the negative X-axis end of the second exhaust gap 12 is closed. The open end of the first channel of the exhaust duct 1 connects to the open end of the third channel closest to the negative X-axis end, allowing the open end of the third channel closest to the negative X-axis end to connect externally. The second exhaust gap 12 connects to the first exhaust gap 11, allowing clean air discharged from the sand guide channel 21 to reach the second exhaust gap 12 from the first exhaust gap 11. The open end of the second channel of the exhaust duct 1 connects to the second exhaust gap 12, thus discharging the clean air from the second exhaust gap 12. The fan is generally connected to the open end of the second channel of the exhaust duct 1.

[0046] Through the above scheme, firstly, when dusty air passes through the sand-guiding channel 21, the sand in the air will directly enter the next-level sand-guiding channel 21 under the action of inertia, while the clean air will be discharged through the first exhaust gap 11 and the second exhaust gap 12, thus achieving the effect of filtering out the sand in the air; secondly, the clean air experiences less resistance as it flows from the first exhaust gap 11 to the second exhaust gap 12, which can achieve the purpose of separating the sand in the air with low resistance and low energy consumption; thirdly, since clean air is continuously discharged from the first exhaust gap 11 and the second exhaust gap 12 during the air flow, setting the ventilation area of ​​the multiple sand-guiding channels 21 to gradually decrease can ensure the speed of the airflow in the sand-guiding channel 21, so that the sand in the airflow has sufficient inertia to enter the next-level sand-guiding channel 21.

[0047] In this embodiment, the sand guiding channel 21 includes a variable diameter sand guiding section 211 near the negative X-axis end and a straight hole sand guiding section 212 near the positive X-axis end. The ventilation area of ​​the variable diameter sand guiding section 211 gradually decreases along the positive X-axis direction, and the orthogonal projections of the various positions of the straight hole sand guiding section 212 along the X-axis direction on the projection plane perpendicular to the X-axis direction overlap with each other.

[0048] The width of the sand guiding channel 21 is measured along the Y-axis, and its height is measured along the Z-axis. The width of the variable-diameter sand guiding section 211 gradually decreases along the positive Z-axis, and / or the height gradually decreases along the positive Z-axis. Specifically, in this embodiment, the inner walls of each surface of the variable-diameter sand guiding section 211 are planes forming an angle with the X-axis. The projected light rays of the orthographic projection of the straight-hole sand guiding section 212 are parallel to the X-axis, and the projection plane is perpendicular to the X-axis. The variable-diameter sand guiding section 211 can increase the airflow velocity in the sand guiding channel 21, and the straight-hole sand guiding section 212 guides the sand discharged from the previous sand guiding channel 21 directly into the next sand guiding channel 21 along the X-axis.

[0049] In this embodiment, the orthographic projections of the third channel end and the fourth channel end facing the same first exhaust gap 11 on the projection plane in the vertical X-axis direction overlap with each other.

[0050] The projected rays of the orthographic projections of the third and fourth channel ends of the sand guide channel 21 are parallel to the X-axis direction, and the projection planes are perpendicular to the X-axis direction. Since the orthographic projections of the third and fourth channel ends facing the same first exhaust gap 11 overlap, the clean air does not need to turn much during its flow from the first exhaust gap 11 to the second exhaust gap 12, further reducing the resistance during the clean air flow process.

[0051] In this embodiment, both the exhaust duct 1 and the sand guiding channel 21 extend in the horizontal direction. The exhaust duct 1 has two opposite side walls along the horizontal Y-axis. The sand guiding unit 2 includes two first isolation parts 22, which are arranged along the horizontal Y-axis. The two first isolation parts 22 and the two side walls of the exhaust duct 1 form the second exhaust gap 12. The sand guiding channel 21 is formed between the two first isolation parts 22.

[0052] A sand-guiding channel 21 is formed between the sand-guiding unit 2 and the wall of the exhaust duct 1. Specifically, in this embodiment, each first isolation part 22 includes a variable-diameter sand-guiding section partition 221 and a straight-hole sand-guiding section partition 222. The variable-diameter sand-guiding section partition 221 has a front and a back. The fronts of the two variable-diameter sand-guiding section partitions 221 face each other and there is a variable-diameter sand-guiding section 211 between them. The distance between the fronts of the two variable-diameter sand-guiding section partitions 221 decreases sequentially along the positive X-axis. The back of each variable-diameter sand-guiding section partition 221 faces the side wall of the exhaust duct 1 and there is a second exhaust gap 12 between them. Two variable-diameter sand-guiding section baffles 221 are respectively connected to the positive X-axis ends of the two variable-diameter sand-guiding section baffles 221. The front faces of the two straight-hole sand-guiding section baffles 222 face each other, and the straight-hole sand-guiding section 212 is between them. The distance between the front faces of the two straight-hole sand-guiding section baffles 222 is the same everywhere along the positive X-axis. The back face of each straight-hole sand-guiding section baffle 222 faces the side wall of the exhaust duct 1, and the second exhaust gap 12 is between them. Through the exhaust duct 1 and the two first isolation parts 22, a sand-guiding channel 21 and a second exhaust gap 12 located on the side of the sand-guiding channel 21 can be formed.

[0053] In this embodiment, the inertial sand remover also includes an air inlet pipe 3, which is connected to the end of the third channel closest to the negative X-axis direction.

[0054] The inertial sand separator needs to be connected to the outside to receive dust-laden gas. By setting up an air inlet duct 3, the dust-laden airflow is introduced into the sand guiding channel 21, which facilitates the external connection of the inertial sand separator. Specifically, in this example, the air inlet duct 3 extends along the X-axis direction, and the positive X-axis end of the air inlet duct is connected to the end of the third channel closest to the negative X-axis end.

[0055] In this embodiment, the inertial sand remover also includes a sand discharge pipe 4. One end of the sand discharge pipe 4 extends into the exhaust pipe 1 and is connected to the sand guide channel 21 closest to the positive X-axis end. The other end of the sand discharge pipe 4 extends out of the exhaust pipe 1.

[0056] The inertial sand separator needs to be connected to the outside to discharge sand and dust. By setting up a sand discharge pipe 4, the sand and dust are discharged from the exhaust pipe 1. Specifically, in this example, the sand discharge pipe 4 extends vertically, and the sand and dust are discharged from the sand discharge pipe 4 under its own weight.

[0057] Example 2

[0058] See Figures 3 to 5 As shown, this is an embodiment of the inertial sand remover provided by the present invention.

[0059] The rest is the same as in Embodiment 1, except that in this embodiment, the sand guiding channel 21 extends in the horizontal direction and the second exhaust gap 12 is located above the sand guiding channel 21.

[0060] The X-axis is horizontal, and both the exhaust duct 1 and the sand guiding channel 21 extend horizontally. The second exhaust gap 12 is located above the sand guiding channel 21. When the sand flows horizontally with the air, it is difficult for the sand to flow upwards due to its own weight, and it is difficult for the sand to enter the second exhaust gap 12, thus improving the effect of sand separation.

[0061] In this embodiment, the top wall of the sand guiding channel 21 is an inclined top surface 213. The inclined top surfaces 213 of the multiple sand guiding channels 21 are located on the same plane. The end of the third channel of the same sand guiding channel 21 is higher than the end of the fourth channel, and the end of the third channel facing the same first exhaust gap 11 is lower than the end of the fourth channel.

[0062] With the inclined top surface 213 facing downwards, when the dust-laden airflow enters the sand-guiding channel 21, the top wall of the channel allows the dust to move slightly downwards. During this movement, the dust is also affected by gravity, resulting in a parabolic motion. Because the inclined top surface 213 forms an angle with the horizontal plane, and adjacent inclined top surfaces 213 are spaced a certain distance apart, there is a height difference between the two inclined top surfaces 213. This height difference is determined by the inclination of the inclined top surfaces 213 and the width of the first exhaust gap 11. This height difference further reduces the resistance encountered during the clean air exhaust process.

[0063] In this embodiment, the exhaust duct 1 has a top wall and a bottom wall that are opposite each other. The sand guiding unit 2 includes a second isolation part 23, which is disposed between the top wall and the bottom wall. The second isolation part 23 forms an angle with the horizontal direction. The negative X-axis end of the second isolation part 23 is higher than its positive X-axis end. The second exhaust gap 12 is between the second isolation part 23 and the top wall. The sand guiding channel 21 is between the second isolation part 23 and the bottom wall.

[0064] The second isolation section 23 is an isolation plate with a front and a back. The front of the second isolation section 23 faces the bottom wall of the exhaust duct 1, and a sand guiding channel 21 is formed between the two. The distance between the front of the second isolation section 23 and the bottom wall of the exhaust duct 1 gradually decreases along the positive Z-axis. The second exhaust gap 12 is located above the sand guiding channel 21. Through the exhaust duct 1 and the second isolation section 23, the sand guiding channel 21 and the second exhaust gap 12 located above the sand guiding channel 21 can be formed.

[0065] Example 3

[0066] See Figure 6 As shown, this is an embodiment of the inertial sand remover provided by the present invention.

[0067] The rest is the same as in Embodiment 1, except that in this embodiment, the sand guiding unit 2 itself forms a sand guiding channel 21, and the cross-section of the sand guiding channel 21 can be implemented as a rectangle or a circle. The sand guiding unit 2 and the exhaust pipe 1 form a second exhaust gap 12 around its perimeter.

[0068] Example 4

[0069] See Figure 7 As shown, this is an embodiment of the inertial sand remover provided by the present invention.

[0070] The rest is the same as in Embodiment 1, except that in this embodiment, the dimension of the first exhaust gap 11 along the X-axis is its width, and the width of the plurality of first exhaust gaps 11 arranged sequentially along the positive X-axis decreases sequentially.

[0071] The wider the first exhaust gap 11, the more air is discharged from the first exhaust gap 11 to the second exhaust gap 12; conversely, the narrower the first exhaust gap 11, the less air is discharged from the first exhaust gap 11 to the second exhaust gap 12. Each time air passes through a first exhaust gap 11, clean air is discharged, reducing the airflow into the next sand-guiding channel 21. To maintain airflow velocity in subsequent sand-guiding channels 21 and ensure sufficient inertia for the sand, the ventilation area of ​​subsequent sand-guiding channels 21 is reduced while gradually decreasing the width of the first exhaust gap 11. Specifically, in two adjacent first exhaust gaps 11, the width of the first exhaust gap 11 located on the negative X-axis side is greater than the width of the first exhaust gap 11 located on the positive X-axis side. By gradually reducing the amount of clean air discharged during airflow, the impact of clean air discharge on sand movement can be avoided, ensuring sufficient inertia for the sand and guaranteeing the effectiveness of the inertial sand separator in removing sand.

[0072] Example 5

[0073] See Figure 8 As shown, another embodiment of the inertial sand separator provided by the present invention differs from the above embodiment in that the fan 5 is located at the end of the exhaust duct 1 in the positive X-axis direction, and a sand-discharging fan 6 is installed on the sand-discharging duct 4. In this embodiment, since the airflow is drawn in by the negative pressure of the fan 5 within the exhaust duct 1, the sand and dust inside the sand-discharging duct 4 need to be discharged outwards by the sand-discharging fan 6. The position of the fan 5 in the exhaust duct 1 can be determined according to the site conditions; placing the fan 5 at the front or rear end of the exhaust duct 1 will not affect the sand removal efficiency of the inertial sand separator.

[0074] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An inertial sand separator, characterized in that, include: An exhaust duct extends along the X-axis direction, with the negative X-axis end and the positive X-axis end being the first channel end and the second channel end, respectively, and both the first channel end and the second channel end having an open opening. Multiple sand-guiding units are arranged sequentially along the X-axis in the exhaust duct. A second exhaust gap exists between the sand-guiding units and the inner wall of the exhaust duct, and a first exhaust gap exists between two adjacent sand-guiding units. Each sand-guiding unit cooperates with each other to form a sand-guiding channel within the exhaust duct. The sand-guiding channel extends along the X-axis. The ventilation area of ​​the multiple sand-guiding units arranged sequentially along the X-axis gradually decreases. The negative X-axis end and the positive X-axis end of the sand-guiding channel are the third channel end and the fourth channel end, respectively. The third channel end closest to the negative X-axis end, the third channel end facing the first exhaust gap, and the fourth channel end facing the first exhaust gap are all provided with open openings. The fan is used to drive air to flow in the positive X-axis direction within the exhaust duct; The sand guiding channel extends horizontally, and the second exhaust gap is located above the sand guiding channel; The top wall of the sand guiding channel is an inclined top surface. The inclined top surfaces of multiple sand guiding channels are located on the same plane. The end of the third channel of the same sand guiding channel is higher than the end of the fourth channel, and the end of the third channel facing the same first exhaust gap is lower than the end of the fourth channel.

2. The inertial sand remover according to claim 1, characterized in that, The sand guiding channel includes a variable diameter sand guiding section near the negative X-axis end and a straight hole sand guiding section near the positive X-axis end. The ventilation area of ​​the variable diameter sand guiding section gradually decreases along the positive X-axis direction, and the orthogonal projections of the various positions of the straight hole sand guiding section along the X-axis direction onto the projection plane perpendicular to the X-axis direction overlap with each other.

3. The inertial sand remover according to claim 1, characterized in that, The orthographic projections of the third channel end and the fourth channel end, which are facing the same first exhaust gap, on the projection plane in the vertical X-axis direction overlap each other.

4. The inertial sand remover according to claim 1, characterized in that, The exhaust duct has an upper and lower opposing top wall and bottom wall. The sand guiding unit includes a second isolation section, which is located between the top wall and the bottom wall. The second isolation section forms an angle with the horizontal direction. The negative X-axis end of the second isolation section is higher than its positive X-axis end. The second exhaust gap is between the second isolation section and the top wall, and the sand guiding channel is between the second isolation section and the bottom wall.

5. The inertial sand remover according to claim 1, characterized in that, The first exhaust gap has its width along the X-axis, and the widths of the multiple first exhaust gaps arranged sequentially along the positive X-axis decrease sequentially.

6. The inertial sand separator according to claim 1, characterized in that, The inertial sand separator also includes an air inlet duct, which is connected to the end of the third channel closest to the negative X-axis direction.

7. The inertial sand separator according to claim 1, characterized in that, The inertial sand remover also includes a sand discharge pipe, one end of which extends into the exhaust pipe and is connected to the sand guide channel closest to the positive X-axis end, and the other end of which extends out of the exhaust pipe.

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