Chain net mud scraper

Abstract

The utility model belongs to the technical field of petroleum drilling, and provides a chain net mud scraper which comprises a machine body, a raw material inlet is arranged on a back plate of the machine body, the raw material inlet is connected with a drilling fluid pump outlet through a pipeline, rotating shafts which are movably connected are symmetrically arranged in the machine body, and connected screens are arranged on the two rotating shafts. The screen is inclined and is gradually inclined upwards from the raw material inlet; the screen further comprises a linkage shaft, the linkage shaft is rotationally connected into the machine body, elastic scraping plates which are annularly distributed are arranged on the machine body, the elastic scraping plates are located below the highest position of the screen, the elastic scraping plates are obliquely arranged on the outer circular wall of the linkage shaft, a power assembly is arranged on the side wall of the machine body, and the power assembly drives the screen and the elastic scraping plates to move; according to the utility model, through the arrangement of the cleaning assembly, the screen mesh is prevented from being blocked in the solid-liquid separation process of the drilling fluid, and the separation efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of oil drilling technology, specifically a chain mesh scraper. Background Technology

[0002] Drilling fluid is an indispensable working fluid in oil and gas drilling engineering, and is known as the "blood of drilling." It plays a vital role in drilling, well completion, and downhole operations.

[0003] The drilling fluid, through a circulation system, carries the rock cuttings broken by the drill bit from the bottom of the well to the surface, keeping the wellbore clean and ensuring the smooth progress of drilling operations.

[0004] However, after drilling fluid carries rock cuttings back to the surface during drilling, it needs to undergo solid-liquid separation. Traditional pre-separation equipment (such as vibrating screens) is prone to clogging the screen with sticky substances during the separation process, requiring frequent shutdowns for cleaning. Moreover, manual intervention is required during cleaning, which is inefficient and affects continuous operation. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a chain-mesh scraper to solve the problem of screen clogging that easily occurs during the solid-liquid distribution process of drilling fluid in the prior art.

[0006] A chain-mesh scraper includes a body, a raw material inlet on the back plate of the body, the raw material inlet being connected to the drilling fluid pump outlet via a pipeline, and symmetrically connected rotating shafts inside the body, with screens connected to the two rotating shafts, the screens being inclined and gradually tilting upwards from the raw material inlet;

[0007] It also includes a linkage shaft, which is rotatably connected to the machine body. The machine body is provided with annularly distributed elastic scrapers, which are located below the highest point of the screen and are inclinedly arranged on the outer circular wall of the linkage shaft. A power component is provided on the side wall of the machine body, which drives the screen and the elastic scrapers to move.

[0008] Preferably, the top two sides of the machine body are symmetrically provided with lifting rings, and the side wall of the machine body away from the raw material inlet is provided with a baffle, and there is a gap between the baffle and the bottom plate of the machine body.

[0009] Preferably, a guide plate is provided on the inner bottom plate of the machine body at one end of the raw material inlet. The guide plate is located below the elastic scraper and its top surface is inclined, with the direction of the inclined surface gradually downward towards the baffle.

[0010] Preferably, the power assembly includes a motor, a drive sprocket, a driven sprocket, an adjusting sprocket, and a power chain. A mounting plate is provided on one side of the machine body, the motor is placed on the mounting plate, and the output shaft of the motor is connected to the rotating shaft on the side away from the raw material inlet.

[0011] Preferably, the drive sprocket is connected to the other end of the rotating shaft, and the drive sprocket is located on the side of the machine body away from the motor. The driven sprocket is mounted on the linkage shaft and is located on the same side as the drive sprocket. The machine body has an adjustable shaft that is rotatably connected inside. The adjustable sprocket is mounted on the adjustable shaft and is located on the same side as the driven sprocket. The power chain is wound around the drive sprocket, the driven sprocket, and the adjustable sprocket. After installation, the drive sprocket, the driven sprocket, and the adjustable sprocket are arranged in a triangular pattern.

[0012] Preferably, a control box is provided on one side of the machine body, the external power supply of the control box is installed on the same side as the motor, and the control box is electrically connected to the motor.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This utility model has a machine body with a raw material inlet. The drilling fluid is fed into a screen through the raw material inlet. The screen has holes that are spaced apart. As the screen moves, it conveys the drilling fluid and hydrated clay mixture upwards. The liquid leaks down through the holes of the screen, and the hydrated clay is screened out through the screen, thus completing the separation of hydrated clay from the drilling fluid.

[0015] Furthermore, a linkage shaft is installed below the screen outlet, with annularly distributed elastic scrapers on the linkage shaft. The elastic scrapers maintain contact with the screen surface, so that after the hydrated clay is transported, the elastic scrapers scrape off the surface of the screen during its movement. This effectively prevents the hydrated clay from sticking to the screen and causing blockage. At the same time, the screen is designed to be inclined, so that after the hydrated clay is scraped off, it can slide down along the elastic scrapers, avoiding blockage between two adjacent elastic scrapers, thus improving the flexibility of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall separation device components of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal components of the machine body of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the linkage shaft and elastic scraper and other components of this utility model;

[0019] Figure 4This is a schematic diagram of the structure of the power assembly and other components of this utility model.

[0020] In the picture:

[0021] 1. Machine body; 2. Raw material inlet; 3. Rotating shaft; 4. Screen; 5. Linkage shaft; 6. Elastic scraper; 7. Lifting ring; 8. Baffle; 9. Guide plate; 10. Motor; 11. Drive sprocket; 12. Driven sprocket; 13. Adjusting sprocket; 14. Power chain; 15. Mounting plate; 16. Adjusting shaft; 17. Control box. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] As attached Figure 1 To be continued Figure 4 As shown:

[0024] Example 1: This utility model provides a chain mesh scraper, including a machine body 1. The back plate of the machine body 1 is provided with a raw material inlet 2. The raw material inlet 2 is connected to the drilling fluid pump outlet through a pipeline. The machine body 1 is symmetrically provided with movable rotating shafts 3. The two rotating shafts 3 are provided with connected screens 4. The screens 4 are inclined and gradually tilt upward from the raw material inlet 2.

[0025] It also includes a linkage shaft 5, which is rotatably connected inside the machine body 1. The machine body 1 is provided with annularly distributed elastic scrapers 6, which are located below the highest point of the screen 4 and are inclinedly arranged on the outer circular wall of the linkage shaft 5. A power component is provided on the side wall of the machine body 1, which drives the screen 4 and the elastic scrapers 6 to move.

[0026] It should be noted that the machine body 1 is equipped with a raw material inlet 2. The drilling fluid is fed into the screen 4 through the raw material inlet 2. The screen 4 has holes that are spaced apart. The screen 4 is at an angle of 15-30 degrees to the horizontal plane. As the screen 4 moves, it conveys the drilling fluid and hydrated clay mixture upwards. The liquid leaks down through the holes of the screen 4, and the hydrated clay is screened out through the screen 4, thus completing the separation of hydrated clay from the drilling fluid.

[0027] Furthermore, a linkage shaft 5 is installed below the outlet of the screen 4, and annularly distributed elastic scrapers 6 are installed on the linkage shaft 5. The elastic scrapers 6 maintain contact with the surface of the screen 4, so that after the hydrated clay is transported, the elastic scrapers 6 scrape off the surface of the screen 4 during its movement, which can effectively prevent the hydrated clay from sticking to the screen 4 and causing blockage. At the same time, the screen 4 is designed to be inclined, so that after the hydrated clay is scraped off, it can slide down along the elastic scrapers 6, avoiding blockage between two adjacent elastic scrapers 6, thus improving the flexibility of the device.

[0028] In this embodiment, lifting rings 7 are symmetrically provided on both sides of the top of the machine body 1, and a baffle 8 is provided on the side wall of the machine body 1 away from the raw material inlet 2. There is a gap between the baffle 8 and the bottom plate of the machine body 1.

[0029] It should be noted that, with the lifting ring 7, when the device needs to be moved, the crane can lift the machine body 1 through the lifting ring 7, which facilitates the movement of the device. By setting the baffle 8 on the side wall of the discharge port of the machine body 1, after the hydrated clay is separated and transported out, it is restricted by the baffle 8 and can move down along the baffle 8 and fall onto the guide plate 9, so that the separated hydrated clay is gathered in one place, which is more convenient for its later collection and treatment.

[0030] In this embodiment, a guide plate 9 is provided on the inner bottom plate of the machine body 1 and at one end of the raw material inlet 2. The guide plate 9 is located below the elastic scraper 6 and its top surface is inclined, with the direction of the inclined surface gradually downward towards the baffle 8.

[0031] It should be noted that, through the design of the guide plate 9, after the hydrated clay is separated, it falls from the baffle 8 onto the guide plate 9 and slides downwards, which can ultimately better collect the separated hydrated clay.

[0032] In this embodiment, the power assembly includes a motor 10, a drive sprocket 11, a driven sprocket 12, an adjusting sprocket 13, and a power chain 14. A mounting plate 15 is provided on one side of the machine body 1, and the motor 10 is placed on the mounting plate 15. The output shaft of the motor 10 is connected to the rotating shaft 3 on the side away from the raw material inlet 2.

[0033] In this embodiment, the driving sprocket 11 is connected to the other end of the rotating shaft 3. The driving sprocket 11 is located on the side of the machine body 1 away from the motor 10. The driven sprocket 12 is mounted on the linkage shaft 5 and is arranged on the same side as the driving sprocket 11. The machine body 1 is provided with a rotatably connected adjusting shaft 16. The adjusting sprocket 13 is mounted on the adjusting shaft 16 and is arranged on the same side as the driven sprocket 12. The power chain 14 is wound around the driving sprocket 11, the driven sprocket 12 and the adjusting sprocket 13. After installation, the driving sprocket 11, the driven sprocket 12 and the adjusting sprocket 13 are arranged in a triangular distribution.

[0034] It should be noted that, through the power assembly, the driving sprocket 11, the driven sprocket 12, and the adjusting sprocket 13 are connected together by the power chain 14. Thus, when the motor 10 starts, it drives the rotating shaft 3 to rotate. The other end of the rotating shaft 3 is connected to the driving sprocket 11, and the driven sprocket 12 can be driven to rotate through the adjusting chain. This allows the screen 4 and the elastic scraper 6 to move together. During the screening process, the screen 4 can also be self-cleaned, improving the flexibility of the device.

[0035] The adjusting shaft 16 is movably connected to the machine body 1 via the adjusting sprocket 13. Its position can be fixed by bolts, thereby controlling the tension of the power chain 14 by adjusting the position of the adjusting sprocket 13.

[0036] In this embodiment, a control box 17 is provided on one side of the machine body 1. The external power supply of the control box 17 is installed on the same side as the motor 10, and the control box 17 is electrically connected to the motor 10.

[0037] It should be noted that the control box 17, which is equipped with control buttons, can control the motor 10, making it easy to adjust the speed and direction of rotation of the screen 4 and the elastic scraper 6. It can also be used to stop the motor in an emergency to ensure work safety.

[0038] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A chain-mesh scraper, characterized in that, include: The machine body (1) has a raw material inlet (2) on its back plate. The raw material inlet (2) is connected to the drilling fluid pump outlet through a pipeline. The machine body (1) has symmetrically connected rotating shafts (3) inside. The two rotating shafts (3) are connected to screens (4). The screens (4) are inclined and gradually tilt upward from the raw material inlet (2). It also includes a linkage shaft (5), which is rotatably connected inside the machine body (1). The machine body (1) is provided with annularly distributed elastic scrapers (6). The elastic scrapers (6) are located below the highest point of the screen (4), and the elastic scrapers (6) are inclinedly arranged on the outer circular wall of the linkage shaft (5). The side wall of the machine body (1) is provided with a power component, which drives the screen (4) and the elastic scrapers (6) to move.

2. The chain mesh scraper as described in claim 1, characterized in that: The top two sides of the machine body (1) are symmetrically provided with lifting rings (7), and the side wall of the machine body (1) away from the raw material inlet (2) is provided with a baffle (8), and there is a gap between the baffle (8) and the bottom plate of the machine body (1).

3. The chain mesh scraper as described in claim 2, characterized in that: The machine body (1) has a guide plate (9) on its inner bottom plate and at one end of the raw material inlet (2) as described in principle. The guide plate (9) is located below the elastic scraper (6) and its top surface is inclined, with the direction of the inclined surface gradually downward towards the baffle (8).

4. The chain mesh scraper as described in claim 1, characterized in that: The power assembly includes a motor (10), a drive sprocket (11), a driven sprocket (12), an adjusting sprocket (13), and a power chain (14). A mounting plate (15) is provided on one side of the machine body (1). The motor (10) is placed on the mounting plate (15). The output shaft of the motor (10) is connected to the rotating shaft (3) on the side away from the raw material inlet (2).

5. The chain mesh scraper as described in claim 4, characterized in that: The driving sprocket (11) is connected to the other end of the rotating shaft (3). The driving sprocket (11) is located on the side of the machine body (1) away from the motor (10). The driven sprocket (12) is installed on the linkage shaft (5) and is set on the same side as the driving sprocket (11). The machine body (1) is provided with a rotatingly connected adjusting shaft (16). The adjusting sprocket (13) is installed on the adjusting shaft (16) and is set on the same side as the driven sprocket (12). The power chain (14) is wound around the driving sprocket (11), the driven sprocket (12) and the adjusting sprocket (13). The driving sprocket (11), the driven sprocket (12) and the adjusting sprocket (13) are arranged in a triangular distribution after installation.

6. The chain mesh scraper as described in claim 4, characterized in that: A control box (17) is provided on one side of the machine body (1). The external power supply of the control box (17) is installed on the same side as the motor (10), and the control box (17) is electrically connected to the motor (10).

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