Molding granulator for producing petroleum fracturing propping agent

Abstract

The utility model discloses a forming pelletizer for producing a petroleum fracturing propping agent, which belongs to the technical field of pelletizer equipment and comprises a pelletizer main body, a screening box communicated with the bottom surface of the pelletizer main body, a recycling box communicated with the bottom surface of the screening box, and a screening net connected with the inner wall of the screening box; the shielding assembly is arranged on the upper portion of the screening net and comprises a mounting plate and a rotating plate, the top face of the mounting plate is connected with the screening box, the bottom face of the mounting plate is rotationally connected with the rotating plate through a pin shaft, fixing frames are connected to the two ends of the side of the rotating plate, rotating blocks are movably connected to the inner walls of the fixing frames, and connecting columns are connected to the adjacent sides of the two rotating blocks. The two end faces of the connecting column are in sliding friction contact with the two fixing frames, the side face of the connecting column is connected with the movable end of the electric push rod, the situation that too many petroleum fracturing propping agent particles are accumulated on the surface of the screening net, filtering and screening of the petroleum fracturing propping agent particles are affected can be prevented, and the production quality of the petroleum fracturing propping agent by the pelletizer is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of granulation equipment, and in particular to a molding granulation machine for producing petroleum fracturing proppant. Background Technology

[0002] In the production of oil fracturing proppant, a molding and granulating machine is required. Existing molding and granulating machines often require screening of the granulated oil fracturing proppant particles to prevent the inclusion of debris and dust, which would reduce the production quality of the oil fracturing proppant. Usually, an inclined filter screen is used for screening, but the number of oil fracturing proppant particles introduced onto the filter screen surface is not considered. This can easily lead to the accumulation of oil fracturing proppant particles on the filter screen surface, reducing the filtration effect and thus reducing the production quality of the oil fracturing proppant produced by the molding and granulating machine.

[0003] A search of related technologies revealed a Chinese patent document (authorization announcement number CN215312181U) describing a molding and granulating machine for producing petroleum fracturing proppant. This machine includes a feeding device, a granulation device, and a screening device connected in sequence. The feeding device includes a feeding hopper with a uniform hopper connected to its bottom, and a uniform device inside the uniform hopper. The granulation device includes a housing with a first granulation shaft and a second granulation shaft inside. Both granulation shafts are connected to a drive motor, and pressure rollers with grooves are installed on both shafts. An inclined discharge hopper is connected to the bottom of the housing, and a screening device is connected below the discharge hopper. This invention aims to solve the problems of existing granulators failing to filter raw materials, resulting in uneven mixing and the presence of powder in the finished product that cannot be screened. However, this device does not consider controlling the number of petroleum fracturing proppant particles introduced onto the filter screen surface, which can easily lead to proppant accumulation, reducing the filtration effect and consequently lowering the production quality of petroleum fracturing proppant by the molding and granulating machine. Utility Model Content

[0004] The purpose of this invention is to provide a molding and granulation machine for the production of oil fracturing proppant, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a molding and granulation machine for producing oil fracturing proppant, comprising:

[0006] The main body of the granulator for producing oil fracturing proppant has a screening box connected to the bottom surface of the granulator body, a recycling box connected to the bottom surface of the screening box, and an inclined screening screen for screening oil fracturing proppant particles connected to the inner wall of the screening box.

[0007] A shielding assembly for controlling the input quantity of proppant in oil fracturing is located on top of a screen. The shielding assembly includes a mounting plate and a rotating plate. The top surface of the mounting plate is connected to the screen box, and the bottom surface of the mounting plate is rotatably connected to the rotating plate via a pin. Fixed frames are connected to both ends of the side of the rotating plate, and rotating blocks are movably connected to the inner wall of the fixed frames. Connecting columns are connected to adjacent sides of the two rotating blocks, and the two end faces of the connecting columns are in sliding frictional contact with the two fixed frames. The moving end of an electric push rod is connected to the side of the connecting columns.

[0008] Preferably, a discharge port is installed on the side of the screening box, and a connecting plate is connected to the fixed end of the electric push rod.

[0009] Preferably, the top surface of the connecting plate is fixedly connected to the screening box, and a conduit is connected to the outer wall of the screening box.

[0010] Preferably, the outer periphery of the conduit is connected to the recycling bin, and a connecting ring is connected to the side of the recycling bin.

[0011] Preferably, a fan is installed on the outer periphery of the connecting ring, and a fixing ring is provided in the inner cavity of the connecting ring.

[0012] Preferably, a ring-shaped filter screen is connected to the adjacent sides of the connecting ring and the fixing ring, and a fixing bearing is embedded and fixedly connected to the side of the fixing ring.

[0013] Preferably, the inner ring of the fixed bearing is interference-fitted with a rotating column, and a cleaning plate is connected to the end face of the rotating column.

[0014] Preferably, the side of the cleaning plate is connected to several brush bristles for cleaning the filter screen, and the end of the rotating column away from the cleaning plate is connected to the shaft of the blower via a coupling.

[0015] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0016] This petroleum fracturing proppant production molding and granulation machine introduces the petroleum fracturing proppant particles, processed by the main body of the granulator, into a screening box for screening. The screening screen filters out debris and dust mixed in with the petroleum fracturing proppant particles, preventing them from reducing the production quality of the petroleum fracturing proppant. When the petroleum fracturing proppant particles accumulate on top of the screening screen, it will reduce the filtering effect of the screening screen on the petroleum fracturing proppant particles, thereby reducing the production quality of the petroleum fracturing proppant produced by the molding and granulation machine. The electric push rod provides power, causing the connecting column to drive two rotating blocks to move in the inner cavity of the fixed frame, causing the rotating plate to tilt and controlling the input port size of the petroleum fracturing proppant entering the screening box, preventing the accumulation of petroleum fracturing proppant particles, and improving the production quality of the petroleum fracturing proppant produced by the molding and granulation machine.

[0017] This petroleum fracturing proppant production molding and granulation machine discharges fully-filled petroleum fracturing proppant particles through the outlet. The debris and dust filtered by the screen flow into the recovery box for recycling. A blower provides power to extract dust from the screen box, preventing dust from scattering and polluting the air. The filter screen prevents the dust and debris collected in the recovery box from overflowing. As the blower's shaft rotates, it drives the rotating column to rotate, causing the cleaning plate to rotate around the rotating column as its axis. This drives several bristles to clean the debris accumulated on the surface of the filter screen, preventing the filter screen from being blocked and enhancing the collection effect of debris and dust. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a partial structural schematic diagram of the screening box of this utility model;

[0021] Figure 3 This is a schematic diagram of the shielding component of this utility model;

[0022] Figure 4 This is a schematic diagram of the connecting plate of this utility model;

[0023] Figure 5 This is a schematic diagram of the connecting ring of this utility model;

[0024] Figure 6 This is a schematic diagram of the cleaning plate of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] In the diagram: 1. Granulator body; 2. Screening box; 3. Recycling box; 4. Screening mesh; 5. Shielding assembly; 6. Mounting plate; 7. Rotating plate; 8. Fixing frame; 9. Rotating block; 10. Connecting column; 11. Electric push rod; 12. Connecting plate; 13. Discharge port; 14. Guide tube; 15. Connecting ring; 16. Fan; 17. Filter screen; 18. Fixing ring; 19. Fixing bearing; 20. Rotating column; 21. Cleaning plate. Detailed Implementation

[0027] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0028] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0029] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0030] Please see Figures 1 to 6 A molding and granulation machine for producing oil fracturing proppant, in this embodiment including:

[0031] The main body 1 of the granulator for producing oil fracturing proppant has a screening box 2 connected to the bottom surface of the granulator main body 1, a recycling box 3 connected to the bottom surface of the screening box 2, and an inclined screening screen 4 for screening oil fracturing proppant particles connected to the inner wall of the screening box 2.

[0032] A shielding assembly 5 for controlling the input quantity of proppant in oil fracturing is located on the upper part of the screen 4. The shielding assembly 5 includes a mounting plate 6 and a rotating plate 7. The top surface of the mounting plate 6 is connected to the screen box 2, and the bottom surface of the mounting plate 6 is rotatably connected to the rotating plate 7 via a pin. Fixed frames 8 are connected to both ends of the side of the rotating plate 7. Rotating blocks 9 are movably connected to the inner wall of the fixed frames 8. Connecting columns 10 are connected to adjacent sides of the two rotating blocks 9. The two end faces of the connecting columns 10 are in sliding friction contact with the two fixed frames 8. The moving end of an electric push rod 11 is connected to the side of the connecting column 10.

[0033] In this embodiment, the granulator body 1 granulates the petroleum fracturing proppant. The granulated petroleum fracturing proppant particles are introduced into the screening box 2 through the connection between the granulator body 1 and the screening box 2, providing conditions for screening the petroleum fracturing proppant particles. This separates the debris and dust within the petroleum fracturing proppant particles, improving the production quality of the petroleum fracturing proppant produced by the granulator. The petroleum fracturing proppant particles flowing into the screening box 2 fall onto the bottom surface of the inclined screening screen 4, allowing the screening screen 4 to screen the petroleum fracturing proppant particles. However, the petroleum fracturing proppant particles easily accumulate on the top of the screening screen 4, preventing the screening screen 4 from fully contacting the petroleum fracturing proppant particles and reducing the effectiveness of the screening. To improve the screening effect, the electric push rod 11 provides power, causing the connecting column 10 to move during the movement of the moving end of the electric push rod 11. Both ends of the connecting column 10 are connected to cylindrical rotating blocks 9, so that the two rotating blocks 9 move in the inner cavity of the fixed frame 8. During the transmission process, the mounting plate 6 and the rotating plate 7 rotate relative to each other. By adjusting the tilt angle of the rotating plate 7, the distance between the rotating plate 7 and the inner wall of the screening box 2 near the connection port between the granulator body 1 and the screening box 2 is adjusted, thereby controlling the space of the inlet of the screening box 2, preventing the accumulation of petroleum fracturing proppant particles on the top surface of the screening screen 4, and ensuring that the petroleum fracturing proppant particles are in full contact with the screening screen 4, thereby improving the production quality of petroleum fracturing proppant by the forming granulator.

[0034] Specifically, a discharge port 13 is installed on the side of the screening box 2, and a connecting plate 12 is connected to the fixed end of the electric push rod 11. The top surface of the connecting plate 12 is connected and fixed to the screening box 2.

[0035] In this embodiment, the oil fracturing proppant particles filtered by the screen 4 are discharged through the outlet 13, and the connecting plate 12 fixes the position of the electric push rod 11.

[0036] Specifically, the outer wall of the screening box 2 is connected to a conduit 14, the outer periphery of the conduit 14 is connected to the recycling box 3, the side of the recycling box 3 is connected to a connecting ring 15, a fan 16 is installed on the outer periphery of the connecting ring 15, a fixing ring 18 is provided in the inner cavity of the connecting ring 15, and a ring-shaped filter screen 17 is connected to the adjacent side of the connecting ring 15 and the fixing ring 18.

[0037] In this embodiment, the fan 16 provides power to draw air from the recycling box 3 and discharge it to the outside. Under the action of air pressure, the dust and debris inside the screening box 2 flow into the recycling box 3 for storage, preventing dust from flying and polluting the air environment. The filter 17 provides a shielding effect for the dust and debris, preventing the dust and debris from flowing out of the recycling box 3.

[0038] Specifically, a fixed bearing 19 is embedded and fixedly connected to the side of the fixed ring 18. The inner ring of the fixed bearing 19 is interference-fitted with a rotating column 20. A cleaning plate 21 is connected to the end face of the rotating column 20. Several brush bristles for cleaning the filter screen 17 are connected to the side of the cleaning plate 21. The end of the rotating column 20 away from the cleaning plate 21 is connected to the shaft of the fan 16 through a coupling. A sealed door is installed on the outer wall of the recycling box 3.

[0039] In this embodiment, after prolonged use, the surface of the filter screen 17 is easily clogged. During the rotation of the shaft of the blower 16, the rotating column 20 is driven to rotate, causing the cleaning plate 21 to rotate around the rotating column 20 as the axis. This drives several bristles to clean the debris clogging the surface of the filter screen 17. At the same time, the sealed box door can be opened to clean the dust and debris collected in the recovery box 3. The end of the conduit 14 away from the recovery box 3 is connected to the upper part of the screening box 2 located on the screening screen 4, preventing the mesh of the screening screen 4 from being clogged by a large number of petroleum fracturing support frame particles, which would prevent dust from flowing into the recovery box 3 and improve the structural stability of the device's components.

[0040] The granulator body 1, electric push rod 11, and fan 16 are all existing technologies. Their working principles, dimensions, and models are irrelevant to the function of this application, so they will not be described in detail. The control method of this utility model is through a controller. The control circuit of the controller can be implemented by a person skilled in the art through simple programming. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0041] Working principle

[0042] When using this petroleum fracturing proppant production molding granulator, the petroleum fracturing proppant particles processed by the granulator body 1 are introduced into the top surface of the screening screen 4 inside the screening box 2 for screening. After screening, the material is discharged through the discharge port 13.

[0043] Start the electric push rod 11. During the movement of the moving end of the electric push rod 11, it drives the connecting column 10 to move, so that the two rotating blocks 9 move in the inner cavity of the fixed frame 8. Adjust the tilt angle of the rotating plate 7 to control the amount of material introduced into the screening box 2 of the granulator body 1, and prevent the top surface of the screening screen 4 from being accumulated by petroleum fracturing proppant particles.

[0044] Start the fan 16. The fan 16 provides power so that the dust and debris in the screening box 2 flow into the recycling box 3 for recycling. During the rotation of the fan 16 shaft, the rotating column 20 is driven to rotate, so that the cleaning plate 21 rotates around the rotating column 20 as the axis, driving several bristles to clean the debris clogging the surface of the filter screen 17.

[0045] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forming granulator for the production of petroleum fracturing proppants, characterized by, Include: The granulator body (1) for producing oil fracturing proppant, the bottom surface of the screening box (2) is communicated, the bottom surface of the screening box (2) is communicated with the recovery box (3), the inner wall of the screening box (2) is connected with the inclined screening net (4) for screening oil fracturing proppant particles; The shielding assembly (5) for controlling the input amount of oil fracturing proppant is arranged on the upper part of the screening net (4), the shielding assembly (5) comprises a mounting plate (6) and a rotating plate (7), the top surface of the mounting plate (6) is connected with the screening box (2), the bottom surface of the mounting plate (6) is rotatably connected with the rotating plate (7) through a pin shaft, the side of the rotating plate (7) is connected with a fixed frame (8), the inner wall of the fixed frame (8) is movably connected with a rotating block (9), the adjacent side of the two rotating blocks (9) is connected with a connecting column (10), the end surface of the connecting column (10) is in sliding frictional contact with the two fixed frames (8), the side of the connecting column (10) is connected with the moving end of the electric push rod (11).

2. A forming granulator for the production of oil fracturing proppants according to claim 1, characterized in that: The side of the screening box (2) is provided with a discharge port (13), and the fixed end of the electric push rod (11) is connected with a connecting plate (12).

3. A forming granulator for the production of oil fracturing proppants according to claim 2, characterized in that: The top surface of the connecting plate (12) is connected and fixed with the screening box (2), and the outer side wall of the screening box (2) is communicated with a conduit (14).

4. A forming granulator for the production of oil fracturing proppants according to claim 3, characterized in that: The outer circumferential side of the conduit (14) is communicated with the recovery box (3), and the side of the recovery box (3) is communicated with a connecting ring (15).

5. A forming granulator for the production of oil fracturing proppants according to claim 4, characterized in that: The outer circumferential side of the connecting ring (15) is provided with a fan (16), and the inner cavity of the connecting ring (15) is provided with a fixed ring (18).

6. A shaped granulator for the production of petroleum fracturing proppants according to claim 5, characterized in that: The adjacent side of the connecting ring (15) and the fixed ring (18) is connected with a filter screen (17) in the shape of a ring, and the side of the fixed ring (18) is inbeddedly fixedly connected with a fixed bearing (19).

7. A forming granulator for the production of oil fracturing proppants according to claim 6, characterized in that: The inner ring of the fixed bearing (19) is interference fitted with a rotating column (20), and the end surface of the rotating column (20) is connected with a cleaning plate (21).

8. A shaped granulator for the production of petroleum fracturing proppants according to claim 7, characterized in that: The side of the cleaning plate (21) is connected with a plurality of bristles for cleaning the filter screen (17), and the end of the rotating column (20) away from the cleaning plate (21) is connected with the rotating shaft of the fan (16) through a shaft coupling.

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