Shale gas exploitation desanding device

Abstract

The application discloses a shale gas exploitation sand removing device and belongs to the technical field of shale gas sand removing. The device comprises a bottom plate, driving mechanisms and two outer cylinders arranged on the bottom plate, a sand removing cylinder rotationally connected between the two outer cylinders, a sand removing cavity, a filter plate and a vibrating mechanism arranged in the sand removing cavity, a material dropping port, a sealing plate slidingly connected with the outer wall of the sand removing cylinder and arranged at the material dropping port, a linkage mechanism and a transmission mechanism arranged on the outer wall of the sand removing cylinder. The linkage mechanism is used for vibrating the filter plate in the sand removing cavity in cooperation with the vibrating mechanism, so that the filter plate is effectively prevented from being blocked. When the transmission mechanism is located at the bottom position, the sealing plate at the bottom is rotated and opened, sand in the sand removing cavity is dropped from the material dropping port, the shale gas exploitation and conveying do not need to be stopped for cleaning, time and labor are saved, the normal shale gas exploitation and conveying and filtering are not affected, the device has high practicability and can be widely used.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shale gas desanding, and more particularly to a shale gas mining desanding device. BACKGROUND

[0002] Shale gas refers to natural gas contained in shale layers, and is a kind of unconventional natural gas resource. The mining of shale gas mainly relies on advanced drilling technology and hydraulic fracturing technology. A large number of solid particles such as rock cuttings and sand are present in shale gas, which are carried out of the wellhead by high-speed flowing natural gas. These sand bodies can cause wear or blockage to wellhead equipment, pipelines, compressors and the like, and also affect the quality of natural gas. Therefore, sand bodies need to be filtered during shale gas mining, and desanding is crucial for protecting ground equipment, improving gas quality and ensuring the efficiency of the entire production system.

[0003] At present, the extracted shale gas is mainly introduced into a desanding box, and the sand bodies are filtered through the filter plates inside the desanding box. However, after a period of use, there are a lot of sand bodies left in the filter plates and the desanding box, which can affect the conveying efficiency of shale gas and easily cause blockage of the filter plates. Therefore, it is necessary to stop the mining and conveying of shale gas, and then the desanding box and the filter plates are cleaned by workers. This not only consumes a lot of labor and time, but also reduces the desanding efficiency, and causes slow mining progress and poor mining effect of shale gas.

[0004] Therefore, it is necessary to provide a shale gas mining desanding device to solve the above technical problems. SUMMARY

[0005] The present application aims to provide a shale gas mining desanding device to solve the above technical problems.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] The shale gas mining desanding device comprises:

[0008] A bottom plate is provided with a driving mechanism and two outer cylinders, a desanding cylinder is rotatably connected between the two outer cylinders, the driving mechanism is used to drive the desanding cylinder to rotate, and an air inlet pipe and an air outlet pipe are respectively arranged on the two outer cylinders;

[0009] A plurality of desanding cavities are provided in the desanding cylinder in front and back, and a filter plate and a vibrating mechanism are arranged in the desanding cavities;

[0010] A material falling port is arranged on the outer wall of the desanding cylinder and communicates with the desanding cavities, and a sealing plate is slidably connected with the outer wall of the desanding cylinder at the material falling port;

[0011] A linkage mechanism and a transmission mechanism are arranged on the outer wall of the sand removal cylinder, the linkage mechanism vibrates the filter plate by cooperating with the vibration mechanism, and the transmission mechanism drives the sealing plate at the bottom to rotate.

[0012] Further, a circular ring coaxial with the sand removal cylinder is arranged on the bottom plate, a plurality of first tooth blocks are arranged on the inner side wall of the circular ring, and an extension plate is further arranged on one side of the circular ring, and a plurality of second tooth blocks are arranged on the extension plate.

[0013] Further, the linkage mechanism comprises:

[0014] A first rotating shaft is rotatably arranged on the outer wall of the sand removal cylinder, one end of the first rotating shaft is located outside the sand removal cylinder and is provided with a first bevel gear, and the other end of the first rotating shaft is located inside the sand removal cavity and is provided with a cam;

[0015] A touch mechanism is arranged on the outer wall of the sand removal cylinder for driving the first rotating shaft to rotate.

[0016] Further, the touch mechanism comprises:

[0017] A fixed plate is arranged on the outer wall of the sand removal cylinder, a second rotating shaft is rotatably arranged on the fixed plate, first and second bevel gears are arranged at both ends of the second rotating shaft, the first straight gear intermittently engages with the first tooth block, and the second bevel gear engages with the first bevel gear.

[0018] Further, the vibration mechanism comprises:

[0019] A sliding plate is elastically arranged on the inner wall of the sand removal cavity, a vibration rod is arranged on one side of the sliding plate facing the filter plate, and a vibration plate is arranged at the end of the vibration rod.

[0020] Further, a sliding groove is formed in the inner wall of the sand removal cavity, a sliding block connected with the sliding plate is slidably arranged in the sliding groove, and a first elastic member is arranged between the sliding block and the inner wall of the sliding groove.

[0021] Further, a limiting groove is formed in the inner wall of the sliding groove, and a limiting block connected with the sliding block is slidably arranged in the limiting groove.

[0022] Further, an arc-shaped groove is formed in the outer wall of the sand removal cylinder, a connecting plate connected with the sealing plate is slidably arranged in the arc-shaped groove, a second elastic member is arranged between the connecting plate and the inner wall of the arc-shaped groove, and a plurality of third tooth blocks are arranged on the outer wall of the sealing plate.

[0023] Further, the transmission mechanism comprises:

[0024] A support plate is arranged on the outer wall of the sand removal cylinder, two rotating rods are rotatably arranged on the support plate, a second spur gear and a third spur gear are respectively arranged on the two rotating rods, the second spur gear and the third spur gear are in mesh with each other, the second spur gear is also in intermittent mesh with the second tooth block, and the third spur gear is in mesh with the third tooth block.

[0025] Further, the driving mechanism comprises:

[0026] A driving member is arranged on the bottom plate, and an output end of the driving member is provided with a driving gear;

[0027] An outer gear ring is arranged on the outer wall of the sand removal cylinder and is in mesh with the driving gear.

[0028] Compared with the prior art, the present application has the following beneficial effects:

[0029] 1、The driving mechanism drives the sand removal cylinder to rotate, when the linkage mechanism rotates to the side triggering position, the sand removal cavity in the sand removal cylinder is vibrated through cooperation with the vibration mechanism, the sand on the filter plate in the sand removal cavity is knocked off, the filter plate can be continuously vibrated and cleaned in time, the filter plate is prevented from being blocked, the process effect and efficiency of shale gas are improved, and the practicality is high.

[0030] 2、During the continuous rotation of the sand removal cylinder, when the transmission mechanism is at the bottom position, the transmission mechanism drives the sealing plate at the bottom to rotate, the material falling port is exposed, the sand in the sand removal cavity falls out of the material falling port, the sand in the sand removal cavity at different positions is cleaned through the rotation of the sand removal cylinder, the shale gas needs to be stopped for cleaning, a large amount of labor and time is saved, the sand removal efficiency is high, the normal mining and conveying of shale gas and the filtering are not affected, the mining process of shale gas is accelerated, the practicality is high, and the sand removal device can be widely used. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a whole structure schematic view of the sand removal device of the present application;

[0032] Figure 2 It is a whole structure schematic view of the sand removal device of the present application; Figure 1 It is an enlarged structure schematic view of A in the middle;

[0033] Figure 3 It is a structure schematic view of another side view of the sand removal device of the present application;

[0034] Figure 4 It is a structure schematic view of another side view of the sand removal device of the present application; Figure 3Enlarged structural schematic view at B;

[0035] Figure 5 Schematic view of the bottom perspective structure of the sand removal cylinder of the present application;

[0036] Figure 6 For Figure 5 Enlarged structural schematic view at C;

[0037] Figure 7 Schematic view of the front perspective structure of the sand removal cylinder of the present application after removing the outer cylinder;

[0038] Figure 8 Schematic view of the internal structure of one sand removal cavity of the sand removal cylinder of the present application;

[0039] Figure 9 For Figure 8 Enlarged structural schematic view at D;

[0040] Figure 10 Schematic view of the cross-sectional structure of the sand removal cylinder of the present application;

[0041] Figure 11 For Figure 10 Enlarged structural schematic view at E.

[0042] Explanation of the reference numerals in the figures:

[0043] 1, bottom plate; 2, outer cylinder; 3, sand removal cylinder; 4, driving mechanism; 41, driving member; 42, driving gear; 43, outer gear ring; 5, air inlet pipe; 6, air outlet pipe; 7, sand removal cavity; 8, filter plate; 9, vibration mechanism; 91, sliding plate; 92, vibration rod; 93, vibration plate; 10, material drop opening; 11, sealing plate; 12, linkage mechanism; 121, first rotating shaft; 122, first bevel gear; 123, cam; 124, touch mechanism; 1241, fixed plate; 1242, second rotating shaft; 1243, first spur gear; 1244, second bevel gear; 13, transmission mechanism; 131, support plate; 132, rotating rod; 133, second spur gear; 134, third spur gear; 14, circular ring; 15, first tooth block; 16, extension plate; 17, second tooth block; 18, sliding groove; 19, sliding block; 20, first elastic member; 21, arc-shaped groove; 22, second elastic member; 23, third tooth block; 24, limiting groove; 25, limiting block. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0045] Referring to Figures 1-11 , shale gas exploitation sand removal device, comprising:

[0046] The bottom plate 1 is provided with a driving mechanism 4 and two outer cylinders 2, and the two outer cylinders 2 are rotatably connected with a sand removal cylinder 3. The driving mechanism 4 is used to drive the sand removal cylinder 3 to rotate. The two outer cylinders 2 are respectively provided with an air inlet pipe 5 and an air outlet pipe 6;

[0047] The sand removal cavity 7 is provided in the sand removal cylinder 3 and is provided with a plurality of sand removal cavities 7. The sand removal cavity 7 is provided with a filter plate 8 and a vibration mechanism 9;

[0048] The blanking hole 10 is provided on the outer wall of the sand removal cylinder 3 and is communicated with the sand removal cavity 7. The blanking hole 10 is provided with a blanking plate 11 which is slidably connected with the outer wall of the sand removal cylinder 3;

[0049] The linkage mechanism 12 and the transmission mechanism 13 are provided on the outer wall of the sand removal cylinder 3. The linkage mechanism 12 vibrates the filter plate 8 by cooperating with the vibration mechanism 9. The transmission mechanism 13 drives the blanking plate 11 at the bottom to rotate.

[0050] In use, the driving mechanism 4 of the device drives the sand removal cylinder 3 to rotate. During operation, the sand removal cylinder 3 rotates slowly. The shale gas extracted is connected to the air inlet pipe 5 through the pipeline. Each sand removal cavity 7 in the sand removal cylinder 3 is connected to the air inlet pipe 5 and the air outlet pipe 6 in turn. The shale gas in the air inlet pipe 5 enters the sand removal cavity 7 connected thereto. After being filtered by the filter plate 8 in the sand removal cavity 7, the shale gas is discharged from the air outlet pipe 6 to the next process. The shale gas from the air inlet pipe 5 is always connected to one or more sand removal cavities 7 located above. The sand removal cavities 7 located below or below the side are not connected to the air inlet pipe 5.

[0051] The sand filtered by the filter plate 8 remains in the sand removal cavity 7 or partially remains on the filter plate 8. During the rotation of the sand removal cylinder 3, when the linkage mechanism 12 rotates to the side triggering position, the filter plate 8 in the sand removal cavity 7 is vibrated by cooperating with the vibration mechanism 9. Under the action of knocking vibration, the sand on the filter plate 8 in the side sand removal cavity 7 at this time falls off, thereby greatly avoiding the situation that there is a lot of sand on the filter plate 8. The filter plate 8 can be continuously vibrated and cleaned in time, which can effectively prevent the filter plate 8 from being blocked, thereby improving the process effect and efficiency of the shale gas and having strong practicality.

[0052] When the sand removing cylinder 3 continues to rotate, the transmission mechanism 13 is in the bottom position, the transmission mechanism 13 will make the sealing plate 11 in the bottom position rotate, and the sealing plate 11 will gradually rotate to expose the discharging opening 10. At this time, the sand in the sand removing cavity 7 will fall out of the discharging opening 10, so that the sand in the sand removing cavity 7 can be automatically cleaned. Through the rotation of the sand removing cylinder 3, the sand in the sand removing cavity 7 at different positions can be cleaned in a cycle. Through the cleaning of the sand in the sand removing cavity 7 and the sand on the filter plate 8 in the process of normal shale gas mining and filtering, the current situation of stopping the mining and conveying of shale gas for cleaning is avoided. Not only does it not need to be cleaned frequently by the staff, but also it saves a lot of labor and time, and the sand removing efficiency is high. Moreover, it does not affect the normal mining and conveying and filtering of shale gas, greatly speeds up the mining process of shale gas, has high practicability, and can be widely used.

[0053] When the sand removing cylinder 3 continues to rotate, the transmission mechanism 13 and the sealing plate 11 in the bottom position are moved away, and the sealing plate 11 returns to the initial position, so that the sealing plate 11 seals the discharging opening 10 again, thereby continuing to rotate to repeat the shale gas filtering, filter plate 8 vibration and sand cleaning process.

[0054] In this embodiment, preferably, please refer to Figures 1-5 and Figures 7-10 , the bottom plate 1 is provided with a circular ring 14 coaxial with the sand removing cylinder 3, the inner side wall of the circular ring 14 is provided with a plurality of first tooth blocks 15, and the circular ring 14 is further provided with an extension plate 16, and the extension plate 16 is provided with a plurality of second tooth blocks 17. When the linkage mechanism 12 rotates to the side, it will cooperate with the first tooth block 15, so that the filter plate 8 in the sand removing cavity 7 is vibrated by the vibration mechanism 9; when the transmission mechanism 13 is in the bottom position, the transmission mechanism 13 rotates the sealing plate 11 in the bottom position by cooperating with the second tooth block 17.

[0055] In this embodiment, preferably, please refer to Figure 1 、 Figures 3-5 and Figures 8-11 , the linkage mechanism 12 comprises:

[0056] The first rotating shaft 121 is rotatably arranged on the outer wall of the sand removing cylinder 3, one end of the first rotating shaft 121 is located outside the sand removing cylinder 3 and is provided with a first bevel gear 122, and the other end of the first rotating shaft 121 is located in the sand removing cavity 7 and is provided with a cam 123; the touch mechanism 124 is arranged on the outer wall of the sand removing cylinder 3 and is used to drive the first rotating shaft 121 to rotate. When the touch mechanism 124 of the linkage mechanism 12 rotates to the side, it will cooperate with the first tooth block 15, and the first rotating shaft 121 will be driven to rotate by the touch mechanism 124, and the cam 123 will be rotated by the first rotating shaft 121, so that the filter plate 8 in the sand removing cavity 7 is vibrated by the vibration mechanism 9.

[0057] In this embodiment, preferably, please refer to please refer to Figures 3-4 、 Figures 8-11 , the touch mechanism 124 includes:

[0058] The fixed plate 1241 is arranged on the outer wall of the sand removal cylinder 3, the second rotating shaft 1242 is rotatably arranged on the fixed plate 1241, the first straight gear 1243 and the second bevel gear 1244 are arranged at both ends of the second rotating shaft 1242 respectively, the first straight gear 1243 is intermittently engaged with the first tooth block 15, and the second bevel gear 1244 is engaged with the first bevel gear 122. When the sand removal cylinder 3 rotates to make the first straight gear 1243 engaged with the first tooth block 15 on the circular ring 14, the first straight gear 1243 rotates, the second rotating shaft 1242 and the second bevel gear 1244 are driven to rotate by the first straight gear 1243, and the first bevel gear 122 and the first rotating shaft 121 are driven to rotate by the second bevel gear 1244.

[0059] In this embodiment, preferably, please refer to Figures 8-11 , the vibration mechanism 9 includes:

[0060] The sliding plate 91 is elastically arranged on the inner wall of the sand removal cavity 7, the vibration rod 92 is arranged on one side of the sliding plate 91, and the vibration plate 93 is arranged at the end of the vibration rod 92. The sliding groove 18 is arranged on the inner wall of the sand removal cavity 7, the sliding block 19 connected with the sliding plate 91 is slidably arranged in the sliding groove 18, and the first elastic member 20 is arranged between the sliding block 19 and the inner wall of the sliding groove 18. The first elastic member 20 in the application can be a spring or other elastic structure.

[0061] When the first rotating shaft 121 drives the cam 123 to rotate, when the long side of the cam 123 rotates to one side of the sliding plate 91, the sliding plate 91 is gradually pushed, so that the sliding plate 91 slides along the sliding groove 18 through the sliding block 19, at this time, the sliding plate 91 is in a compressed state, the first elastic member 20 is compressed, and when the cam 123 rotates to the long side away from the sliding plate 91, the sliding plate 91 is no longer pushed, the sliding block 19 and the sliding plate 91 are driven to move back by the elastic force of the first elastic member 20, and are shaken back and forth, so that the sliding plate 91 drives the vibration rod 92 and the vibration plate 93 to move, and the vibration plate 93 knocks and vibrates the filter plate 8 in the sand removal cavity 7. Through the continuous rotation of the cam 123, the vibration plate 93 can cyclically vibrate the filter plate 8, so that the sand on the filter plate 8 falls down, the filter plate 8 is effectively cleaned, and the situation that the filter plate 8 is blocked is greatly avoided, and the use effect is good.

[0062] In this embodiment, preferably, please refer to Figures 8-11The inner wall of the sliding groove 18 is provided with a limiting groove 24, and a limiting block 25 connected with the sliding block 19 is slidably arranged in the limiting groove 24. When the sliding block 19 moves along the sliding groove 18, the sliding block 19 drives the limiting block 25 to slide along the limiting groove 24, and the limiting block 25 can limit and support the sliding block 19, and the stability of the movement of the sliding block 19 and the sliding plate 91 is improved.

[0063] In this embodiment, preferably, please refer to Figures 1-3 、 Figures 2-6 and Figures 8-10 The outer wall of the sand removing cylinder 3 is provided with an arc-shaped groove 21, and a connecting plate connected with the sealing plate 11 is slidably arranged in the arc-shaped groove 21. A second elastic element 22 is arranged between the connecting plate and the inner wall of the arc-shaped groove 21, and the outer wall of the sealing plate 11 is provided with a plurality of third tooth blocks 23. The second elastic element 22 in the application can be a spring or other elastic structure. When the transmission mechanism 13 drives the sealing plate 11 at the bottom to rotate, the connecting plate on the sealing plate 11 will slide along the arc-shaped groove 21 and compress the second elastic element 22, and the sealing plate 11 will gradually open to expose the material falling port 10 for the sand falling process. When the sealing plate 11 at the bottom loses the action of the transmission mechanism 13, the elastic force of the second elastic element 22 will drive the sealing plate 11 to slide back, so that the sealing plate 11 finally returns to the initial state, and the sealing plate 11 will continue to seal the material falling port 10, without affecting the subsequent shale gas filtering operation.

[0064] In this embodiment, preferably, please refer to Figures 1-3 、 Figures 5-6 and Figure 8 The transmission mechanism 13 comprises:

[0065] A support plate 131 is arranged on the outer wall of the sand removing cylinder 3, and two rotating rods 132 are rotatably arranged on the support plate 131. A second spur gear 133 and a third spur gear 134 are respectively arranged on the two rotating rods 132, and the second spur gear 133 and the third spur gear 134 are in meshing relationship. The second spur gear 133 is also in intermittent meshing relationship with the second tooth block 17, and the third spur gear 134 is in meshing relationship with the third tooth block 23. When the sand removing cylinder 3 continues to rotate and the transmission mechanism 13 is at the bottom position, the second spur gear 133 rotates after being meshed with the second tooth block 17. At this time, the second spur gear 133 rotates counterclockwise, and the second spur gear 133 drives the third spur gear 134 to rotate clockwise, and the third spur gear 134 drives the sealing plate 11 to rotate through the third tooth block 23. At this time, the sealing plate 11 rotates counterclockwise to open, so as to gradually expose the material falling port 10 for the material falling operation. After the subsequent rotation of the sand removing cylinder 3 drives the second spur gear 133 to rotate and the second spur gear 133 is no longer meshed with the second tooth block 17, the sealing plate 11 rotates to the initial state through the second elastic element 22, and finally the sealing plate 11 seals the material falling port 10, and the work is recycled in sequence.

[0066] In this embodiment, preferably, please refer to Figure Figure 1 , Figure 3 , Figure 5 and Figure 8 , the driving mechanism 4 comprises:

[0067] The driving member 41 is arranged on the bottom plate 1, and the output end of the driving member 41 is provided with a driving gear 42; the outer ring gear 43 is arranged on the outer wall of the sand removing cylinder 3 and is engaged with the driving gear 42. Starting the driving member 41 will drive the driving gear 42 to rotate, and the driving gear 42 will drive the outer ring gear 43 and the sand removing cylinder 3 to rotate.

[0068] It should be understood that the examples and embodiments described herein are only for illustration and are not intended to limit the present application, and those skilled in the art can make various modifications or changes based on it, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0069] It should be noted that if the present application embodiments involve directional indications such as up, down, left, right, front, back, etc., the directional indications are only used to explain the relative position relationship, motion condition, etc. between the components in a certain specific posture such as shown in the drawings, and if the specific posture changes, the directional indications will also change accordingly.

[0070] In addition, if the present application embodiments involve descriptions such as "first", "second", etc., the "first", "second", etc. descriptions are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously meet the scheme. In addition, "multiple" means two or more. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

Claims

1. A shale gas extraction desanding device, characterized in that, include: The base plate (1) is provided with a drive mechanism (4) and two outer cylinders (2). A sand removal cylinder (3) is rotatably connected between the two outer cylinders (2). The drive mechanism (4) is used to drive the sand removal cylinder (3) to rotate. An air inlet pipe (5) and an air outlet pipe (6) are respectively provided on the two outer cylinders (2). The sand removal chamber (7) is provided in multiple ways, and the sand removal chamber (7) is provided with a filter plate (8) and a vibration mechanism (9). The discharge port (10) is located on the outer wall of the sand removal cylinder (3) and communicates with the sand removal chamber (7). The discharge port (10) is provided with a sealing plate (11) that is slidably connected to the outer wall of the sand removal cylinder (3). The linkage mechanism (12) and the transmission mechanism (13) are located on the outer wall of the sand removal cylinder (3). The linkage mechanism (12) vibrates the filter plate (8) in cooperation with the vibration mechanism (9), and the transmission mechanism (13) drives the sealing plate (11) at the bottom to rotate. The base plate (1) is provided with a ring (14) coaxial with the sand removal cylinder (3). The inner side wall of the ring (14) is provided with a plurality of first tooth blocks (15). An extension plate (16) is also provided on one side of the ring (14). A plurality of second tooth blocks (17) are provided on the extension plate (16). The linkage mechanism (12) includes: The first rotating shaft (121) is rotatably disposed on the outer wall of the sand removal cylinder (3). One end of the first rotating shaft (121) is located outside the sand removal cylinder (3) and is provided with a first bevel gear (122). The other end of the first rotating shaft (121) is located inside the sand removal chamber (7) and is provided with a cam (123). A triggering mechanism (124) is provided on the outer wall of the desanding cylinder (3) for driving the first rotating shaft (121) to rotate; The triggering mechanism (124) includes: A fixing plate (1241) is provided on the outer wall of the sand removal cylinder (3). A second rotating shaft (1242) is rotatably provided on the fixing plate (1241). A first spur gear (1243) and a second bevel gear (1244) are respectively provided at both ends of the second rotating shaft (1242). The first spur gear (1243) meshes intermittently with the first tooth block (15), and the second bevel gear (1244) meshes with the first bevel gear (122). The vibration mechanism (9) includes: A sliding plate (91) is elastically and telescopically disposed on the inner wall of the sand removal chamber (7). A vibrating rod (92) is disposed on the side of the sliding plate (91) facing the filter plate (8), and a vibrating plate (93) is disposed at the end of the vibrating rod (92).

2. The shale gas extraction desanding device according to claim 1, characterized in that, The inner wall of the sand removal chamber (7) is provided with a sliding groove (18), and a slider (19) connected to the sliding plate (91) is slidably arranged on the inner wall of the sliding groove (18). A first elastic element (20) is provided between the slider (19) and the inner wall of the sliding groove (18).

3. The shale gas extraction desanding device according to claim 2, characterized in that, The inner wall of the slide (18) is provided with a limiting groove (24), and the inner wall of the limiting groove (24) is provided with a limiting block (25) connected to the slider (19).

4. The shale gas extraction desanding device according to claim 1, characterized in that, The outer wall of the sand removal cylinder (3) is provided with an arc-shaped groove (21), and a connecting plate connected to the sealing plate (11) is slidably arranged inside the arc-shaped groove (21). A second elastic element (22) is provided between the connecting plate and the inner wall of the arc-shaped groove (21), and a plurality of third tooth blocks (23) are provided on the outer wall of the sealing plate (11).

5. The shale gas extraction desanding device according to claim 4, characterized in that, The transmission mechanism (13) includes: A support plate (131) is provided on the outer wall of the sand removal cylinder (3). Two rotating rods (132) are rotatably provided on the support plate (131). A second spur gear (133) and a third spur gear (134) are respectively provided on the two rotating rods (132). The second spur gear (133) and the third spur gear (134) mesh with each other. The second spur gear (133) also meshes with the second tooth block (17) intermittently. The third spur gear (134) meshes with the third tooth block (23).

6. The shale gas extraction desanding device according to claim 1, characterized in that, The drive mechanism (4) includes: A drive unit (41) is disposed on the base plate (1), and a drive gear (42) is disposed at the output end of the drive unit (41). The external gear ring (43) is disposed on the outer wall of the sand removal cylinder (3) and meshes with the drive gear (42).

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