A screening device for petroleum fracturing proppants

Abstract

The utility model relates to a kind of screening device for oil fracturing proppant applied to the field of oil fracturing exploitation, including screening machine body, the upper end of screening machine body is fixedly connected with installation shell, two adjusting rods are rotatably connected in the inside of installation shell, the right end of adjusting rod is rotatably penetrated installation shell, two adjusting rods are commonly sleeved with belt pulley group outside, and adjusting rod is fixedly sleeved with installation cylinder outside, multiple leaves are fixedly connected with installation cylinder outside, the left end of installation shell is fixedly connected with motor, the rotation of leaf is driven by installation cylinder, the proppant falling into the inside of installation shell is shunted, and proppant is scattered into guide plate along with the rotation of installation cylinder, to effectively avoid that proppant is directly impacted on screen from high free fall, adjustable guide plate can be adapted to different flow, not only can effectively avoid that proppant is accumulated on screen, but also can prolong the service life of screen, reduce later maintenance cost.

Description

Technical Field

[0001] This utility model relates to a screening device, and more particularly to a screening device for oil fracturing proppant applied in the field of oil fracturing. Background Technology

[0002] With the rise of shale oil and gas development technology, the use of petroleum proppant, an important raw material for fracturing, has increased significantly. In deep well oil and gas extraction, petroleum proppant is used to fill rock fractures in the formation along with high-pressure solutions. It supports the fractures and prevents them from closing due to stress release, thereby maintaining high conductivity, ensuring smooth oil and gas flow, and increasing production.

[0003] When producing proppant, the lower limit of the particle size requirement for the proppant is that the fine material to be screened should not exceed 1%, and the screening accuracy should be above 99%. Therefore, the proppant needs to be screened. For example, Chinese Patent Publication No. CN220862025U discloses a petroleum proppant screening device. This utility model sets up multiple screening mechanisms to achieve the sorting of petroleum proppant particles of different sizes. The screen hole diameters in different levels of screening mechanisms are different, and the screens with different screen holes can be replaced according to sales needs.

[0004] When using a screening device, the proppant enters the device through a feeder. When the proppant falls directly from a height onto the screen, it not only causes proppant accumulation but also impacts the screen. With prolonged use, the screen is more prone to damage, leading to a significant increase in maintenance costs. Utility Model Content

[0005] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is that when the proppant falls directly from a height and hits the screen, it will not only cause the proppant to accumulate, but also impact the screen, making the screen more prone to damage.

[0006] To address the aforementioned problems, this utility model provides a screening device for oil fracturing proppant, comprising a screening machine body, an installation shell fixedly connected to the upper end of the screening machine body, two adjusting rods rotatably connected inside the installation shell, the right end of the adjusting rods rotatably penetrating the installation shell, a pulley assembly commonly fitted around the two adjusting rods, and an installation cylinder fixedly fitted around the adjusting rods, with multiple fan blades fixedly connected around the installation cylinder, a motor fixedly connected to the left end of the installation shell, the output end of the motor movably penetrating the installation shell and fixedly connected to one of the adjusting rods, installation strips and two installation seats fixedly connected to the front and rear inner walls of the installation shell, guide plates rotatably connected to the corresponding ends of the two installation strips, a cylinder rotatably connected inside the installation seat, an installation ball fixedly connected to the end of the cylinder near the guide plate, and multiple ball seats corresponding to the multiple cylinders fixedly connected to the end of the guide plate near the cylinder, with the installation ball movably embedded in the ball seat.

[0007] In the aforementioned oil fracturing proppant screening device, the proppant falling into the mounting shell is diverted by the rotating fan blades driven by the mounting cylinder. As the mounting cylinder rotates, the proppant is then sprayed onto the guide plate, effectively preventing the proppant from falling freely from a height and directly impacting the screen. The adjustable guide plate can adapt to different flow rates, which not only effectively prevents the proppant from accumulating on the screen but also extends the service life of the screen and reduces subsequent maintenance costs.

[0008] As a further supplement to this application, the pulley assembly is located on the right side of the mounting housing, and the longitudinal section of the upper end of the mounting housing is an inverted isosceles trapezoid.

[0009] As a further supplement to this application, a V-shaped guide plate is fixedly connected between the left and right inner walls of the mounting shell. The opening of the guide plate faces the screening machine body, the guide plate is located above the middle of the two adjusting rods, and there is a gap between the guide plate and the adjacent fan blade.

[0010] As a further supplement to this application, multiple fan blades are arranged in a ring array around the mounting cylinder, and the angle between the fan blades and the outer surface of the mounting cylinder is not a right angle.

[0011] As a further supplement to this application, the guide plate includes a mounting plate rotatably connected to the mounting strip, a rubber plate is fixedly connected to one end of the mounting plate facing the ball seat, and a positioning plate is fixedly connected to one end of the rubber plate facing the ball seat, with the positioning plate being fixedly connected to the ball seat.

[0012] As a further addition to this application, the two guide vanes are symmetrically distributed, and the longitudinal section of the guide vanes is rectangular.

[0013] As a further supplement to this application, the longitudinal section of the guide plate is arc-shaped, multiple baffles are inserted at the upper end of the guide plate, and a positioning strip is provided at the end of the guide plate away from the mounting strip. The positioning strip is fixedly connected to the guide plate by multiple bolts.

[0014] In summary, in practical applications, the proppant enters the mounting housing via the feeder, where it contacts the guide plate to flow and be diverted. The diverted proppant then enters the fan blades, where it is dispersed by the rotation of the blades, and falls onto the guide plate. From there, it slides down the surface of the guide plate into the screening machine body for sieving. This effectively prevents the proppant from falling freely from a height and directly impacting the screen. The adjustable guide plate can adapt to different flow rates, which not only effectively prevents the proppant from accumulating on the screen but also extends the service life of the screen and reduces subsequent maintenance costs. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the first embodiment of this application; Figure 2 This is a cross-sectional view of the mounting shell structure according to the first embodiment of this application; Figure 3 This is a schematic diagram of the guide plate structure according to the first embodiment of this application; Figure 4 This is a schematic diagram of the fan blade structure according to the first embodiment of this application; Figure 5 This is a schematic diagram of the guide vane structure according to the first embodiment of this application; Figure 6 This is a cross-sectional view of the mounting shell structure according to the second embodiment of this application; Figure 7 This is a schematic diagram of the partition structure according to the second embodiment of this application.

[0016] Explanation of the labels in the diagram: 1-Screening machine body, 2-Mounting shell, 3-Adjusting rod, 4-Pulley assembly, 5-Mounting cylinder, 6-Fan blade, 7-Motor, 8-Mounting strip, 9-Mounting seat, 10-Guide plate, 101-Mounting plate, 102-Rubber plate, 103-Positioning plate, 11-Cylinder, 12-Mounting ball, 13-Ball seat, 14-Guide plate, 15-Partition plate, 16-Positioning strip. Detailed Implementation

[0017] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0018] First implementation method: Figures 1-4The diagram shows a screening device for oil fracturing proppant, comprising a screening machine body 1. A mounting shell 2 is fixedly connected to the upper end of the screening machine body 1. Two adjusting rods 3 are rotatably connected inside the mounting shell 2. The right end of each adjusting rod 3 rotatably passes through the mounting shell 2. A pulley set 4 is fitted around both adjusting rods 3, driving the two adjusting rods 3 to rotate. The pulley set 4 can be replaced with two meshing gears according to actual needs, thereby adjusting the rotation direction of the two adjusting rods 3. A mounting cylinder 5 is fixedly fitted around the adjusting rods 3, and multiple fan blades 6 are fixedly connected to the outside of the mounting cylinder 5. The multiple fan blades 6 are arranged in a circular array around the mounting cylinder 5, and the angle between the fan blades 6 and the outer surface of the mounting cylinder 5 is not a right angle. A motor 7 is fixedly connected to the left end of the mounting shell 2. The output end of the motor 7 movably passes through the mounting shell 2 and is fixedly connected to one of the adjusting rods 3. The pulley assembly 4 is located on the right side of the mounting shell 2. The longitudinal section of the upper end of the mounting shell 2 is an inverted isosceles trapezoid. A V-shaped guide plate 14 is fixedly connected between the left and right inner walls of the mounting shell 2. The opening of the guide plate 14 faces the screening machine body 1. The guide plate 14 is located above the middle of the two adjusting rods 3, and there is a gap between the guide plate 14 and the adjacent fan blade 6. When the motor 7 is started, it drives the adjusting rod 3 to rotate, thereby driving the mounting cylinder 5 to rotate, causing the fan blade 6 to rotate. The proppant comes into contact with the guide plate 14 and falls and diverts the proppant, forcibly diverting the central material to both sides, effectively preventing the proppant from falling into the screening machine body 1 from the gap between the two mounting cylinders 5. The diverted proppant falls on the fan blade 6. The motor 7 is started to drive the mounting cylinder 5 to rotate, causing the fan blade 6 to rotate, thereby dispersing the proppant with the rotation of the fan blade 6, effectively improving the uniformity of material dispersion.

[0019] Figure 1 , Figure 2 and Figure 5 As shown: Mounting strips 8 and two mounting seats 9 are fixedly connected to the front and rear inner walls of the mounting shell 2. A guide plate 10 is rotatably connected to one end of each of the two mounting strips 8. A cylinder 11 is rotatably connected inside the mounting seat 9. A mounting ball 12 is fixedly connected to one end of the cylinder 11 near the guide plate 10. A plurality of ball seats 13, each corresponding to a plurality of cylinders 11, are fixedly connected to one end of the guide plate 10 near the cylinder 11. The mounting ball 12 is movably embedded in the ball seat 13. By extending and retracting the cylinder 11, the guide plate 10 can be pushed to rotate around the mounting strip 8, thereby adjusting the rotation angle of the guide plate 10 to facilitate flow guidance according to different flow rates.

[0020] Figure 5As shown: the guide plate 10 includes a mounting plate 101 rotatably connected to the mounting strip 8. A rubber plate 102 is fixedly connected to one end of the mounting plate 101 facing the ball seat 13, and a positioning plate 103 is fixedly connected to one end of the rubber plate 102 facing the ball seat 13. The positioning plate 103 is fixedly connected to the ball seat 13. The two guide plates 10 are symmetrically distributed, and the longitudinal section of the guide plate 10 is rectangular. When the proppant falls onto the surface of the guide plate 10, the rubber plate 102 can effectively buffer and absorb high-frequency vibration, thereby effectively avoiding impact from causing greater damage to the cylinder 11.

[0021] When the proppant is screened, it enters the mounting shell 2 through the feeder. The proppant contacts the guide plate 14 and is diverted as it falls, forcibly diverting the central material to both sides. This effectively prevents the proppant from falling into the screening machine body 1 through the gap between the two mounting cylinders 5. The diverted proppant falls onto the fan blades 6. The motor 7 is started to drive the mounting cylinders 5 to rotate, causing the fan blades 6 to rotate. The rotation of the fan blades 6 disperses the material, which then falls onto the guide plate 10 and slides down the surface of the guide plate 10 into the screening machine body 1 for screening. This effectively prevents the proppant from falling freely from a height and directly impacting the screen inside the screening machine body 1. The adjustable guide plate 10 can adapt to different flow rates, which not only effectively prevents the proppant from accumulating on the screen inside the screening machine body 1, but also extends the service life of the screen and reduces later maintenance costs.

[0022] Second implementation method: This embodiment adds a partition 15 and a positioning strip 16 to the first embodiment, while the rest remains the same as the first embodiment.

[0023] Figure 6 and Figure 7 As shown: the longitudinal section of the guide plate 10 is arc-shaped, and multiple partitions 15 are inserted into the upper end of the guide plate 10. The working surface of the guide plate 10 is provided with slots, and multiple partitions 15 are vertically inserted into the slots. The end of the guide plate 10 away from the mounting strip 8 is provided with a positioning strip 16, and the positioning strip 16 is fixedly connected to the guide plate 10 by multiple bolts.

[0024] After the proppant falls onto the guide plate 10, the guide plate 10 is divided by multiple baffles 15, making it into multiple independent channels. The multiple baffles 15 are limited and fixed by positioning strips 16, which makes it easy to adjust the number and spacing of the baffles 15, thereby effectively improving the uniformity of the bulk material.

[0025] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A screening device for oil fracturing proppant, comprising a screening machine body (1), characterized in that: The upper end of the screening machine body (1) is fixedly connected to a mounting shell (2). Two adjusting rods (3) are rotatably connected inside the mounting shell (2). The right end of the adjusting rod (3) rotatably passes through the mounting shell (2). A pulley group (4) is fitted around the two adjusting rods (3). A mounting cylinder (5) is fixedly fitted around the adjusting rods (3). Multiple fan blades (6) are fixedly connected around the mounting cylinder (5). A motor (7) is fixedly connected to the left end of the mounting shell (2). The output end of the motor (7) movably passes through the mounting shell (2) and is fixedly connected to one of the adjusting rods (3). The mounting shell (2) is fixedly connected to the front and rear inner walls with mounting strips (8) and two mounting seats (9). The corresponding ends of the two mounting strips (8) are rotatably connected to guide plates (10). The mounting seats (9) are rotatably connected to cylinders (11). The end of the cylinder (11) near the guide plate (10) is fixedly connected to a mounting ball (12). The end of the guide plate (10) near the cylinder (11) is fixedly connected to a plurality of ball seats (13) corresponding to the plurality of cylinders (11). The mounting ball (12) is movably embedded in the ball seat (13).

2. The screening device for oil fracturing proppant according to claim 1, characterized in that: The pulley assembly (4) is located on the right side of the mounting shell (2), and the longitudinal section of the upper end of the mounting shell (2) is an inverted isosceles trapezoid.

3. The screening device for oil fracturing proppant according to claim 1, characterized in that: A V-shaped guide plate (14) is fixedly connected between the left and right inner walls of the mounting shell (2). The opening of the guide plate (14) faces the screening machine body (1). The guide plate (14) is located above the middle of the two adjusting rods (3), and there is a gap between the guide plate (14) and the adjacent fan blade (6).

4. A screening device for oil fracturing proppant according to claim 1, characterized in that: Multiple fan blades (6) are arranged in a ring array around the mounting cylinder (5), and the angle between the fan blades (6) and the outer surface of the mounting cylinder (5) is not a right angle.

5. A screening device for oil fracturing proppant according to claim 1, characterized in that: The guide plate (10) includes a mounting plate (101) rotatably connected to the mounting strip (8). A rubber plate (102) is fixedly connected to one end of the mounting plate (101) facing the ball seat (13). A positioning plate (103) is fixedly connected to one end of the rubber plate (102) facing the ball seat (13). The positioning plate (103) is fixedly connected to the ball seat (13).

6. A screening device for oil fracturing proppant according to claim 1, characterized in that: The two guide vanes (10) are symmetrically distributed, and the longitudinal section of the guide vanes (10) is rectangular.

7. A screening device for oil fracturing proppant according to claim 1, characterized in that: The longitudinal section of the guide plate (10) is arc-shaped. Multiple partitions (15) are inserted at the upper end of the guide plate (10), and a positioning strip (16) is provided at the end of the guide plate (10) away from the mounting strip (8). The positioning strip (16) is fixedly connected to the guide plate (10) by multiple bolts.

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