A sand remover and sand discharge method

Abstract

This invention provides a sand remover and a sand discharge method. The sand remover includes: a sand collecting device, which includes a sand collecting cylinder having a sand collecting chamber and a sand discharging chamber extending perpendicularly to each other, the sand collecting chamber being used to collect sand and gravel; and a sand discharging device, which has a blocking state connected to the sand collecting device and a sand discharging state that moves the sand and gravel, and the sand discharging device can switch between the blocking state and the sand discharging state to discharge the sand and gravel from the sand collecting device. This invention solves the problem of low sand discharge efficiency in existing sand removers.

Description

Technical Field

[0001] This invention relates to the field of natural gas desanding technology, and more specifically, to a desander and a desanding method. Background Technology

[0002] Natural gas is an important clean, combustible energy source found in geological formations. During natural gas extraction, the raw gas directly extracted from wells often contains a small amount of sand and gravel. Especially in recent years, with the widespread use of fracturing operations to increase production, some of the proppant sand and gravel carried by the fracturing fluid rises to the wellhead along with the extracted natural gas. If this sand and gravel is not removed, it will erode pipelines and even clog them, severely impacting the lifespan of the gas transmission system. Therefore, desanders are generally required in gas fields for sand removal. Existing desanders typically use gravity separation, where sand and gravel remain in the lower collection cylinder while natural gas continues to flow upwards. The sand and gravel accumulate in the collection cylinder and are periodically discharged. However, discharging the sand and gravel from the collection cylinder requires external blowing, which may cause some sand and gravel to adhere upwards into the collection cylinder cavity, potentially clogging the blowing mechanism and the collection cylinder, making the cleaning process difficult, time-consuming, and inefficient.

[0003] In other words, existing sand removers suffer from low sand removal efficiency. Summary of the Invention

[0004] The main objective of this invention is to provide a sand remover and a sand discharge method to solve the problem of low sand discharge efficiency in existing sand removers.

[0005] To achieve the above objectives, according to one aspect of the present invention, a sand remover is provided, comprising: a sand collecting device, the sand collecting device including a sand collecting cylinder having a sand collecting chamber and a sand discharging chamber extending perpendicularly to each other, the sand collecting chamber being used to collect sand and gravel; and a sand discharging device having a blocking state connected to the sand collecting device and a sand discharging state that drives the sand and gravel to move, the sand discharging device being able to switch between the blocking state and the sand discharging state to discharge the sand and gravel from the sand collecting device.

[0006] Furthermore, one end of the sand discharge chamber is connected to the bottom of the sand collection chamber, and the other end of the sand discharge chamber has a sand discharge port that penetrates the wall of the sand collection cylinder. At least a part of the sand discharge device is detachably connected to the sand discharge port.

[0007] Furthermore, the sand discharge device includes: a sand discharge assembly that can extend into the sand discharge chamber and is used to discharge sand and gravel from the sand collection chamber; and a sealing assembly that is detachably disposed at the sand discharge port and is connected to the end of the sand discharge assembly near the sand discharge port. The sealing assembly can drive the sand discharge assembly to move so as to discharge sand and gravel from the sand collection cylinder.

[0008] Furthermore, the sand discharge assembly includes: two opposing limiting strips, which are detachably mounted on the inner wall of the sand discharge cavity. The two limiting strips are spaced apart from the bottom surface of the sand discharge cavity to form a clearance space, and the extending direction of the limiting strips is parallel to the extending direction of the sand discharge cavity; and a sand discharge plate, which extends in the same direction as the limiting strips. One end of the sand discharge plate is connected to a sealing assembly so that the sealing assembly can drive the sand discharge plate to move, and the other end of the sand discharge plate can extend into the clearance space and abut against the inner wall of the sand discharge cavity.

[0009] Furthermore, the sand discharge plate has a bent section, which is bent and located at the end of the sand discharge plate away from the sealing component. When the sand discharge device is in the sealing state, the bent section bends and abuts against the inner wall of the sand discharge cavity, and the bending center of the bent section is located inside the sand discharge cavity.

[0010] Furthermore, when the sand discharge device is in a blocked state, the height of the bent section is less than the height of the sand discharge cavity.

[0011] Furthermore, the end of the bent section away from the sealing component has a cutting edge structure.

[0012] Furthermore, the side of the sand discharge plate away from the clearance space has multiple spaced scraper strips, the extension direction of which is perpendicular to the extension direction of the sand discharge plate.

[0013] Furthermore, the inner wall surface of the sand discharge chamber has two opposing limiting grooves, the extending direction of the limiting grooves is parallel to the extending direction of the sand discharge chamber, and at least a part of the limiting strip can extend into the limiting groove and slide in the limiting groove, so that when the sealing component moves the sand discharge plate, the limiting strip moves accordingly.

[0014] Furthermore, the limiting strip includes a limiting part and a connecting part. The connecting part can extend into the limiting groove. When the sand discharge device is in a blocked state, the limiting part is fitted with the sand discharge plate.

[0015] Furthermore, the side of the limiting part away from the sand discharge plate is inclined toward the central axis of the sand discharge plate.

[0016] Furthermore, the limiting strip and the sealing component are spaced apart, and the end of the limiting strip near the sealing component has a magnetic element, while the sealing component has a magnetic attraction element, so that the sealing component can attract the limiting strip.

[0017] Furthermore, at least one handle is provided on the side of the sealing assembly away from the sand discharge chamber.

[0018] Furthermore, when the sand discharge device is in the blocked state, the blocking component is connected to the sand collection cylinder by bolts.

[0019] According to another aspect of the present invention, a sand removal method is provided, employing the aforementioned sand remover. The sand removal method includes: step S10: removing the sealing component of the sand removal device, which is in a sealed state, from the sand collection device of the sand remover; step S20: pulling the sealing component to cause the sand removal component of the sand removal device to discharge the sand and gravel, while the limiting strip of the sand removal component slides out from the limiting groove in the sand discharge chamber of the sand collection cylinder of the sand collection device; step S30: reinstalling the limiting strip into the limiting groove; step S40: inserting the sand removal plate of the sand removal component into the clearance space between the limiting strip and the sand discharge chamber; step S50: repeating steps S20 to S40 until all the sand and gravel in the sand collection cylinder is discharged.

[0020] According to the technical solution of the present invention, the sand remover includes a sand collecting device and a sand discharging device. The sand collecting device includes a sand collecting cylinder, which has a sand collecting chamber and a sand discharging chamber that extend perpendicularly to each other. The sand collecting chamber is used to collect sand and gravel. The sand discharging device has a blocking state connected to the sand collecting device and a sand discharging state that drives the sand and gravel to move. The sand discharging device can switch between the blocking state and the sand discharging state to discharge the sand and gravel from the sand collecting device.

[0021] By connecting the sand discharge device to the sand collection device in a sealed state, the sand remover's sealing performance is ensured, internal pressure is stabilized, and the sand removal effect is prevented from being affected. The sand discharge device, in its discharge state, moves the sand and gravel within the sand collection chamber, allowing the collected sand and gravel to be discharged after the sand removal process is complete. No external mechanisms are required; simply disconnecting the sand discharge device from the sand collection device allows the discharge device to move. The sand discharge process is convenient, quick, simple, and reliable, eliminating the risk of clogging internal devices and significantly improving sand removal efficiency.

[0022] Before sand removal, the sand discharge device of this application is in a blocked state, with two limiting strips installed in the limiting grooves, and the sand discharge plate in the clearance space abutting against the inner wall of the sand discharge chamber. During sand removal, sand and gravel accumulate in the sand collection cylinder and also on the sand discharge plate. When it is necessary to clean the internal sand accumulation, the sand remover is stopped, the blocking assembly is removed from the sand discharge port, and the operator pulls the blocking assembly outward by holding the handle. The blocking assembly drives the sand and gravel on the sand discharge plate out. After the sand discharge plate is completely pulled out, the limiting strips are also completely pulled out. If there is still sand and gravel in the sand collection cylinder that has not been cleaned out, the two limiting strips are reinstalled in the limiting grooves, the bent section of the sand discharge plate is straightened, and it is extended into the clearance space again. This will shovel the sand and gravel accumulated at the bottom of the sand discharge chamber onto the sand discharge plate until the bent section abuts against the inner wall of the sand discharge chamber. The blocking assembly is then pulled again to discharge the sand and gravel. This operation is repeated until all the sand and gravel is discharged. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0024] Figure 1 A cross-sectional view of the sand collecting device and sand discharging device according to Embodiment 1 of the present invention is shown;

[0025] Figure 2 It shows Figure 1 A cross-sectional view of the sand discharge chamber from one angle;

[0026] Figure 3 It shows Figure 1 A schematic diagram of the sealing component at one angle;

[0027] Figure 4 It shows Figure 1 A schematic diagram of a portion of the sand removal device from one angle;

[0028] Figure 5 It shows Figure 1 A schematic diagram of a portion of the sand removal device from another angle;

[0029] Figure 6 A flowchart of a sand removal method according to an optional embodiment of the present invention is shown.

[0030] The above figures include the following reference numerals:

[0031] 10. Sand collecting device; 11. Sand collecting cylinder; 12. Sand collecting chamber; 13. Sand discharging chamber; 14. Sand discharging port; 15. Limiting groove; 20. Sand discharging device; 21. Sand discharging assembly; 211. Limiting strip; 212. Sand discharging plate; 213. Bending section; 214. Scraper; 215. Limiting part; 216. Connecting part; 22. Sealing assembly; 221. Handle; 222. Plug. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0034] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0035] To address the problem of low sand removal efficiency in existing sand removers, this invention provides a sand remover and a sand removal method.

[0036] like Figures 1 to 6 As shown, the sand remover includes a sand collecting device 10 and a sand discharging device 20. The sand collecting device 10 includes a sand collecting cylinder 11, which has a sand collecting chamber 12 and a sand discharging chamber 13 extending perpendicularly to each other. The sand collecting chamber 12 is used to collect sand and gravel. The sand discharging device 20 has a blocking state connected to the sand collecting device 10 and a sand discharging state that drives the sand and gravel to move. The sand discharging device 20 can switch between the blocking state and the sand discharging state to discharge the sand and gravel from the sand collecting device 10.

[0037] By connecting the sand discharge device 20, which is in a sealed state, to the sand collection device 10, the sealing performance of the sand remover can be ensured, the internal pressure can be kept stable, and the sand removal effect can be avoided. The sand discharge device 20, in its discharge state, moves the sand and gravel within the sand collection chamber 12, allowing the collected sand and gravel to be discharged after the sand removal process is completed. No external mechanisms are required; simply disconnecting the sand discharge device 20 from the sand collection device 10 allows the sand discharge device 20 to move. The sand discharge process is convenient, quick, simple, and reliable, and there is no risk of clogging the internal devices, greatly improving sand removal efficiency.

[0038] It should be noted that the device for separating sand and gravel from gas in this application adopts an existing structure, which uses gravity to cause the separated sand and gravel to accumulate in the sand collection cylinder 11.

[0039] like Figure 1 As shown, one end of the sand discharge chamber 13 is connected to the bottom of the sand collection chamber 12, and the other end of the sand discharge chamber 13 has a sand discharge port 14, which penetrates the wall of the sand collection cylinder. At least a portion of the sand discharge device 20 is detachably connected to the sand discharge port 14. By connecting the sand discharge chamber 13 to the bottom of the sand collection chamber 12, the sand and gravel accumulated at the bottom of the sand collection chamber 12 can be discharged from the sand discharge chamber 13. By connecting the sand discharge device 20 to the sand discharge port 14 at one end of the sand discharge chamber 13, the sealing of the sand collection device 10 can be ensured in the sealed state, and in the sand discharge state, the sand and gravel in the sand discharge chamber 13 can be directly driven out from the sand discharge port 14.

[0040] like Figure 1As shown, the sand discharge device 20 includes a sand discharge assembly 21 and a sealing assembly 22. The sand discharge assembly 21 can extend into the sand discharge chamber 13 and is used to discharge sand and gravel from the sand collection chamber 12. The sealing assembly 22 is detachably installed at the sand discharge port 14 and is connected to the end of the sand discharge assembly 21 near the sand discharge port 14. The sealing assembly 22 can drive the sand discharge assembly 21 to move, so as to discharge sand and gravel from the sand collection cylinder 11. By extending the sand discharge assembly 21 into the sand discharge chamber 13, the sand and gravel in the sand discharge chamber 13 can be cleared out during the sand discharge process. By connecting the sealing assembly 22 to one end of the sand discharge assembly 21, the detached sealing assembly 22 can be moved away from the sand discharge port 14 at the sand discharge port 14, thereby driving the sand discharge assembly 21 to carry out the sand and gravel. The sealing component 22 is detachably installed at the sand discharge port 14, which facilitates switching the sand discharge device 20 between the sealing state and the sand discharge state. That is, in the sealing state, the sealing component 22 is connected to the sand discharge port 14, and in the sand discharge state, the sealing component 22 is removed from the sand discharge port 14 so that the sealing component 22 drives the sand discharge component 21 to move, thereby discharging the sand and gravel.

[0041] like Figure 1 and Figure 2 As shown, the sand discharge assembly 21 includes two opposing limiting strips 211 and a sand discharge plate 212. The limiting strips 211 are detachably mounted on the inner wall of the sand discharge cavity 13. The two limiting strips 211 are spaced apart from the bottom surface of the sand discharge cavity 13 to form a clearance space. The extending direction of the limiting strips 211 is parallel to the extending direction of the sand discharge cavity 13. The extending direction of the sand discharge plate 212 is the same as the extending direction of the limiting strips 211. One end of the sand discharge plate 212 is connected to the sealing assembly 22 so that the sealing assembly 22 can drive the sand discharge plate 212 to move. The other end of the sand discharge plate 212 can extend into the clearance space and abut against the inner wall of the sand discharge cavity 13. By setting the two limiting strips 211 parallel and spaced apart along the extending direction of the sand discharge cavity 13, a clearance space can be formed between them and the bottom surface of the sand discharge cavity 13 without affecting the movement of sand and gravel. By extending the sand discharge plate 212 into the clearance space, it can be moved so that one side of the sand discharge plate 212 fits against the bottom surface of the sand discharge cavity 13, while the other side carries the accumulated sand and gravel out towards the sand discharge port 14. By connecting one end of the sand discharge plate 212 to the sealing component 22, the sealing component 22 can be used to move the sand discharge plate 212, and the other end of the sand discharge plate 212 can be placed against the inner wall surface of the sand discharge cavity 13. That is to say, the length of the sand discharge plate 212 is at least the length of the sand discharge cavity 13, thereby covering the entire bottom surface of the sand discharge cavity 13 and improving cleaning efficiency.

[0042] It should be noted that since the bottom of the sand discharge chamber 13 is connected to the bottom of the sand collection chamber 12, the sand discharge plate 212 can abut against the inner wall of the sand discharge chamber 13. This allows the sand discharge plate 212 to cover the projection position of the sand collection chamber 12 on the sand discharge chamber 13, so that the sand and gravel at the bottom of the entire sand collection cylinder 11 can be fully received during sand discharge and extracted as a whole along with the sand discharge plate 212.

[0043] like Figure 1 As shown, the sand discharge plate 212 has a bent section 213, which is bently disposed at the end of the sand discharge plate 212 away from the sealing component 22. When the sand discharge device 20 is in the sealing state, the bent section 213 bends and abuts against the inner wall surface of the sand discharge cavity 13, with the bending center of the bent section 213 located inside the sand discharge cavity 13. That is, when the bent section 213 abuts against the inner wall surface of the sand discharge cavity 13, from the bottom surface of the sand discharge cavity 13 upwards to the side surface of the sand discharge cavity 13, the bent section 213 bends by conforming to this shape. When the bent section 213 is in the clearance space, it remains flat and does not bend, so as to ensure that the sand discharge plate 212 moves smoothly within the clearance space. By setting the bent section 213, when the sand discharge plate 212 drives the sand and gravel outwards, the bent section 213 hooks the limiting strip 211 and pulls the limiting strip 211 out simultaneously, so as to ensure that the sand and gravel are smoothly cleared out.

[0044] like Figure 1 As shown, when the sand discharge device 20 is in the blocked state, the height of the bent section 213 is less than the height of the sand discharge cavity 13. This can prevent the bent section 213 from getting stuck when moving within the clearance space, ensuring smooth sand discharge.

[0045] Specifically, the end of the bent section 213 away from the sealing component 22 has a cutting edge structure, which makes it easier to scoop up gravel when the bent section 213 extends into the clearance space, thus providing better operability.

[0046] like Figure 5 As shown, the side of the sand discharge plate 212 away from the clearance space has multiple spaced scraper strips 214, and the extending direction of the scraper strips 214 is perpendicular to the extending direction of the sand discharge plate 212. That is to say, multiple scraper strips 214 are provided on the side of the sand discharge plate 212 that drives the sand and gravel to move. When the sand discharge plate 212 carries out the sand and gravel, the scraper strips 214 can improve the flowability of the sand and gravel, so as to carry out more sand and gravel and improve the sand discharge efficiency.

[0047] It should be noted that the scraper 214 will not extend to the limit strip 211 to avoid obstructing the movement of the sand discharge plate 212.

[0048] like Figure 2As shown, the inner wall of the sand discharge cavity 13 has two opposing limiting grooves 15. The extending direction of the limiting grooves 15 is parallel to the extending direction of the sand discharge cavity 13. At least a portion of the limiting strip 211 can extend into the limiting groove 15 and slide within it, so that when the sealing assembly 22 moves the sand discharge plate 212, the limiting strip 211 moves accordingly. By setting the limiting strip 211 to slide within the limiting groove 15, the stability of the limiting strip 211's position can be ensured, guaranteeing that the sand discharge plate 212 is limited by the limiting strip 211 when it extends into the clearance space, preventing tilting or wobbling. Simultaneously, when it is necessary to remove the limiting strip 211, the stability of its sliding can be ensured.

[0049] like Figure 2 As shown, the limiting strip 211 includes a limiting part 215 and a connecting part 216. The connecting part 216 can extend into the limiting groove 15. When the sand discharge device 20 is in the blocked state, the limiting part 215 is fitted against the sand discharge plate 212. Extending the connecting part 216 into the limiting groove 15 ensures that the limiting strip 211 is stably installed in the sand discharge cavity 13. By having the limiting part 215 abut against the sand discharge plate 212, it can prevent the sand discharge plate 212 from tilting and shaking during the process of extending into the clearance space, ensuring that the sand discharge plate 212 carries out sand and gravel to the maximum extent.

[0050] like Figure 2 As shown, the side of the limiting part 215 away from the sand discharge plate 212 is inclined towards the central axis of the sand discharge plate 212, which is conducive to the sand and gravel sliding down and accumulating on the sand discharge plate 212, and avoids the limiting part 215 from obstructing the sand and gravel from being carried out.

[0051] Specifically, the connecting part 216 is arc-shaped on the side facing the limiting groove 15 so that when gravel enters the limiting groove 15, the connecting part 216 can also slide smoothly in the limiting groove 15.

[0052] Optionally, the limiting strip 211 and the sealing component 22 are spaced apart. The end of the limiting strip 211 near the sealing component 22 has a magnetic element, and the sealing component 22 has a magnetic attraction element, so that the sealing component 22 can attract the limiting strip 211. That is, since the limiting strip 211 needs to be installed separately and needs to be carried out synchronously during the sand removal process, the limiting strip 211 and the sealing component 22 are magnetically attracted to each other, making it convenient to carry out the limiting strip 211. Of course, due to the presence of the bending section 213, the magnetic element and the magnetic attraction element can be omitted, and the limiting strip 211 can be pulled out simply by the bending degree of the bending section 213 itself, because the limiting strip 211 is not subject to external resistance when the bending section 213 moves outward, and the limiting strip 211 can also be carried out.

[0053] like Figure 3As shown, at least one handle 221 is provided on the side of the sealing component 22 away from the sand discharge chamber 13, so that when the sand discharge device 20 is in the sand discharge state, the operator can hold the handle 221 and pull out the sealing component 22.

[0054] like Figure 3 As shown, when the sand discharge device 20 is in the blocking state, the blocking component 22 is connected to the sand collection cylinder 11 by bolts to ensure a stable connection and internal sealing, while also ensuring easy disassembly.

[0055] like Figure 6 As shown, the present invention also provides a sand discharge method using the sand remover of this application, comprising: step S10: removing the sealing component 22 of the sand discharge device 20 of the sand remover from the sand collection device 10 of the sand remover; step S20: pulling the sealing component 22 so that the sand discharge component 21 of the sand discharge device 20 drives the sand and gravel to be discharged, while the limiting strip 211 of the sand discharge component 21 slides out from the limiting groove 15 in the sand discharge cavity 13 of the sand collection cylinder 11 of the sand collection device 10; step S30: installing the limiting strip 211 back into the limiting groove 15; step S40: inserting the sand discharge plate 212 of the sand discharge component 21 into the clearance space between the limiting strip 211 and the sand discharge cavity 13; step S50: repeating steps S20 to S40 until all the sand and gravel in the sand collection cylinder 11 is discharged.

[0056] Before sand removal, the sand discharge device 20 of the sand remover is in a blocked state, with two limiting strips 211 installed in the limiting groove 15, and the sand discharge plate 212 positioned within the clearance space and abutting against the inner wall of the sand discharge chamber 13. During sand removal, sand and gravel accumulate in the sand collection cylinder 11, and sand and gravel also accumulate on the sand discharge plate 212. When it is necessary to clean the internal sand accumulation, the sand remover is stopped, the blocking component 22 is removed from the sand discharge port 14, and the operator holds the handle 221 and pulls the blocking component 22 outward, causing the sand and gravel on the sand discharge plate 212 to be discharged. After the sand discharge plate 212 is completely pulled out, the limiting strips 211 are also completely pulled out. If there is still sand in the sand collection cylinder 11 that has not been cleaned out, reinstall the two limiting strips 211 into the limiting groove 15, straighten the bent section 213 of the sand discharge plate 212, and extend it into the clearance space again. At this time, the sand accumulated at the bottom of the sand discharge cavity 13 will be shoveled onto the sand discharge plate 212 until the bent section 213 abuts against the inner wall of the sand discharge cavity 13. Pull the sealing component 22 again to discharge the sand. Repeat the operation until all the sand is discharged.

[0057] Example 1

[0058] like Figures 1 to 6As shown, the device for separating sand and gravel from gas by the desander adopts an existing structure, such as connecting a separator and a gas-sand shut-off valve, and then connecting it to the sand collection device 10 in this application, using gravity to collect the separated sand and gravel in the sand collection cylinder 11.

[0059] Specifically, the sand collecting chamber 12 and the sand discharging chamber 13 inside the sand collecting cylinder 11 are both square structures.

[0060] Of course, the sand collecting cavity 12 and the sand discharging cavity 13 can also be cylindrical structures. In this case, the sand discharging plate 212 is also an arc-shaped structure that can fit the curvature of the bottom surface of the sand discharging cavity 13.

[0061] like Figure 3 and Figure 4 As shown, the sand discharge port 14 is circular, and the sealing assembly 22 has a similarly shaped plug 222. The plug 222 can tightly cover and fit the sand discharge port 14. The plug 222 is connected to the sand collection cylinder 11 using multiple bolts to ensure that the plug 222 presses tightly against the sand collection cylinder 11, ensuring the airtightness of the sand remover. Two handles 221 are provided on the outside of the plug 222 for easy operation by the operator.

[0062] Specifically, the bending section 213 is made of rubber material with internal metal wires so that the bending section 213 can be bent and fit the arc-shaped structure inside the sand discharge cavity 13.

[0063] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0064] 1. By connecting the sand discharge device 20, which is in a blocked state, to the sand collection device 10, the sealing performance of the sand remover can be guaranteed, the internal pressure can be kept stable, and the sand removal effect can be avoided.

[0065] 2. By moving the sand and gravel in the sand collection chamber 12 through the sand discharge device 20 in the sand discharge state, the collected sand and gravel can be discharged after the sand removal work is completed. No external mechanism is required. Simply disconnect the sand discharge device 20 from the sand collection device 10 to allow the sand discharge device 20 to move. The sand discharge work is convenient and quick, the process is simple and reliable, and there is no risk of clogging the internal device, which greatly improves the sand discharge efficiency.

[0066] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0067] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0068] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A sand remover, characterized in that, include: A sand collecting device (10) includes a sand collecting cylinder (11), which has a sand collecting chamber (12) and a sand discharging chamber (13) extending perpendicularly to each other. The sand collecting chamber (12) is used to collect sand and gravel. The sand discharge device (20) has a blocking state connected to the sand collection device (10) and a sand discharge state that drives the sand and gravel to move. The sand discharge device (20) can switch between the blocking state and the sand discharge state to discharge the sand and gravel from the sand collection device (10). One end of the sand discharge chamber (13) is connected to the bottom of the sand collection chamber (12), and the other end of the sand discharge chamber (13) has a sand discharge port (14). The sand discharge port (14) penetrates the wall of the sand collection cylinder (11), and at least a part of the sand discharge device (20) is detachably connected to the sand discharge port (14). The sand removal device (20) includes: Sand discharge assembly (21), which can extend into the sand discharge chamber (13), is used to discharge sand and gravel from the sand collection chamber (12); A sealing assembly (22) is detachably disposed at the sand discharge port (14); The sand removal assembly (21) includes: Two opposing limiting strips (211) are provided, and the two limiting strips (211) are spaced apart from the bottom surface of the sand discharge cavity (13) to form a clearance space; Sand discharge plate (212), the extension direction of the sand discharge plate (212) is the same as the extension direction of the limiting strip (211), one end of the sand discharge plate (212) is connected to the sealing component (22) so that the sealing component (22) can drive the sand discharge plate (212) to move, and the other end of the sand discharge plate (212) can extend into the clearance space and abut against the inner wall surface of the sand discharge cavity (13); The sand discharge plate (212) has a bent section (213), which is bent and disposed at one end of the sand discharge plate (212) away from the sealing component (22). When the sand discharge device (20) is in the sealing state, the bent section (213) bends and abuts against the inner wall of the sand discharge cavity (13), and the bending center of the bent section (213) is located inside the sand discharge cavity (13).

2. The sand remover according to claim 1, characterized in that, The sealing component (22) is connected to the end of the sand discharge component (21) near the sand discharge port (14). The sealing component (22) can drive the sand discharge component (21) to move so as to discharge the sand from the sand collection cylinder (11).

3. The sand remover according to claim 2, characterized in that, The sand removal assembly (21) includes: The limiting strip (211) is detachably disposed on the inner wall surface of the sand discharge cavity (13), and the extending direction of the limiting strip (211) is parallel to the extending direction of the sand discharge cavity (13).

4. The sand remover according to claim 3, characterized in that, When the sand discharge device (20) is in the blocked state, the height of the bent section (213) is less than the height of the sand discharge cavity (13).

5. The sand remover according to claim 3, characterized in that, The bent section (213) has a cutting edge structure at the end away from the sealing component (22).

6. The sand remover according to claim 3, characterized in that, The sand discharge plate (212) has a plurality of spaced scraper strips (214) on the side away from the clearance space, and the extension direction of the scraper strips (214) is perpendicular to the extension direction of the sand discharge plate (212).

7. The sand remover according to claim 3, characterized in that, The inner wall of the sand discharge cavity (13) has two opposing limiting grooves (15). The extending direction of the limiting grooves (15) is parallel to the extending direction of the sand discharge cavity (13). At least a part of the limiting strip (211) can extend into the limiting groove (15) and slide in the limiting groove (15) so that when the sealing assembly (22) drives the sand discharge plate (212) to move, the limiting strip (211) moves accordingly.

8. The sand remover according to claim 7, characterized in that, The limiting strip (211) includes a limiting part (215) and a connecting part (216). The connecting part (216) can extend into the limiting groove (15). When the sand discharge device (20) is in the blocking state, the limiting part (215) is fitted with the sand discharge plate (212).

9. The sand remover according to claim 8, characterized in that, The limiting part (215) is inclined toward the central axis of the sand discharge plate (212) on the side away from the sand discharge plate (212).

10. The sand remover according to claim 3, characterized in that, The limiting strip (211) is spaced apart from the blocking component (22). The end of the limiting strip (211) near the blocking component (22) has a magnetic element, and the blocking component (22) has a magnetic element so that the blocking component (22) can attract the limiting strip (211).

11. The sand remover according to claim 2, characterized in that, The sealing assembly (22) is provided with at least one handle (221) on the side away from the sand discharge chamber (13).

12. The sand remover according to claim 2, characterized in that, When the sand discharge device (20) is in the blocked state, the blocking component (22) is connected to the sand collection cylinder (11) by bolts.

13. A method for removing sand, characterized in that, The sand removal method using the sand remover according to any one of claims 1 to 12 includes: Step S10: Remove the sealing component (22) of the sand discharge device (20) of the sand separator, which is in a blocked state, from the sand collection device (10) of the sand separator; Step S20: Pull the sealing component (22) so that the sand discharge component (21) of the sand discharge device (20) drives the sand and gravel out, and at the same time the limiting strip (211) of the sand discharge component (21) slides out from the limiting groove (15) in the sand discharge cavity (13) of the sand collection cylinder (11) of the sand collection device (10); Step S30: Install the limiting strip (211) back into the limiting groove (15); Step S40: Insert the sand discharge plate (212) of the sand discharge assembly (21) into the clearance space between the limiting strip (211) and the sand discharge cavity (13); Step S50: Repeat steps S20 to S40 until all the gravel in the sand collection cylinder (11) is discharged.

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