Fracturing sand production device based on extrusion friction forming principle

Abstract

The utility model discloses a fracturing sand production device based on an extrusion friction forming principle. Comprising a power mechanism, a fracturing sand production mechanism and a machine frame used for installing all operation parts, and the power mechanism adopts a variable frequency motor to provide power. And high-mesh fracturing sand is produced from ores falling from the blanking hopper under the mutual action of the hammer lump rotors in the cylinder and the friction and extrusion action of the high-mesh fracturing sand and is discharged through the discharging hopper. The device is easy to maintain, fracturing sand edges and cracks formed through friction extrusion are few, the operation efficiency and the fracturing sand quality can be greatly improved, and the labor intensity and the production cost are remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of quartz sand processing, in particular to a fracturing sand production device based on the extrusion friction molding principle. Background Art

[0002] Fracturing sand is a high-purity quartz sand that is finely processed and has strong compression resistance and roundness. This type of fracturing sand is often used in the oil industry as a petroleum proppant and is an indispensable substance. Quartz fracturing sand ranks first in domestic and foreign oil field production due to its low price and good performance. However, most of the quartz fracturing sand production equipment on the market has complex structures and low production efficiency. For example, traditional impact fracturing sand production equipment not only has low production efficiency, but also forms fracturing sand with edges and cracks, which seriously affects the quality of fracturing sand and cannot meet the use requirements of oil fields. Therefore, it is of great significance to invent a fracturing sand production device that can produce spherical, crack-free fracturing sand, enhance the compression resistance of fracturing sand, and at the same time improve the standard success rate of fracturing sand production and steadily improve the quality of fracturing sand. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a production equipment for producing fracturing sand required in the process of petroleum and shale gas development, which can realize large-scale industrial production, improve the production efficiency and quality of fracturing sand, and realize automated operation of fracturing sand production equipment dedicated to oil fields.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A fracturing sand production device based on the principle of extrusion friction molding. It is characterized by comprising a power mechanism, a fracturing sand production mechanism and a frame for installing various operating components. The power mechanism is powered by a variable frequency motor, and the power is transmitted to the fracturing sand production mechanism through a belt transmission device; the feed hopper of the fracturing sand production mechanism is arranged at the upper end of the upper cover bearing seat, which is used to load ore, and four four-tooth rotors, two six-tooth rotors and an adjustable hammer rotor composed of a wear-resistant head and a hammer are staggeredly installed on the central axis of the middle cylinder, and tooth grooves are provided on the tooth plate of the inner layer of the cylinder, and the base of the lower end cover plate is respectively connected to the cylinder and the bottom plate, and the discharge hopper is arranged below the bottom plate; the frame is mainly used to carry the power mechanism and the fracturing sand production mechanism.

[0006] The variable frequency motor of the power mechanism is installed on the support plate, and the power output by the variable frequency motor is transmitted to the central axis of the cylinder through a belt transmission device to drive the central axis to rotate, thereby driving the hammer rotor to rotate and realizing the production operation of fracturing sand.

[0007] Furthermore, the belt transmission device includes a driving wheel, a belt and a driven wheel. The driving wheel is installed on the output shaft of the variable frequency motor, and the driven wheel is installed on the upper end of the central shaft. Power is transmitted between the driving wheel and the driven wheel through five belts.

[0008] Preferably, the upper cover bearing seat at the upper end of the fracturing sand production mechanism is installed on the central axis through a bearing, and the lower end is fastened by a stabilizing ring A. A fastening screw hole is provided on the outer edge, and rectangular holes are provided on both sides for cooperating with the two feet of the lower hopper, so that the ore placed in the lower hopper can enter the interior of the cylinder from both sides.

[0009] Preferably, the middle part of the fracturing sand production mechanism is the operation site of fracturing sand production, and a movable cover plate (8) is provided on the outer side of the cylinder (7) to facilitate maintenance operations; a tooth plate (11) is provided on the inner side of the cylinder (7) to enable the ore and the tooth grooves on the tooth plate (11) to rub and squeeze each other when the internal hammer rotor (27) is running, so as to obtain fracturing sand with higher mesh count and higher quality; a movable window is provided on the outer side of the cylinder for easy maintenance, and tooth grooves are provided on the tooth plate on the inner layer of the cylinder. Under the joint action of the tooth plate tooth grooves and multiple hammer rotors, the fracturing sand is rubbed and squeezed to form fracturing sand with higher quality and higher sphericity.

[0010] Furthermore, the hammer rotor is installed on the central axis of the fracturing sand production mechanism. Driven by a variable frequency motor, multiple hammer rotors rotate together with the central axis, and the rotation speed can be adjusted according to the mesh size and quality of the required fracturing sand.

[0011] Preferably, a lower cover plate base is provided at the lower end of the fracturing sand production mechanism, and its inner circle cylindrical pore and bearing B are installed on the central axis. A stabilizing ring B is installed below the central axis to prevent the lower cover plate base from moving. The lower cover plate base is fixed to the bottom plate through the lower end screw hole, and the bottom plate is installed on the frame.

[0012] Furthermore, a discharge hopper is provided below the bottom plate and is designed to be hemispherical so as to reduce the buffering force when the fracturing sand falls to the ground, so that the fracturing sand can fall slowly.

[0013] Furthermore, eight discharge hopper gaps are evenly arranged between the inner and outer rings of the lower cover base and separated by baffles to achieve dispersed falling of the fracturing sand after processing.

[0014] Preferably, the flange A is installed below the upper cover bearing seat, and the flange B is installed above the lower cover base, and screw holes are provided at the outer edges to achieve a secure connection between the upper cover bearing seat and the lower cover base and the cylinder.

[0015] Preferably, the driven wheel, the fixing ring A, the bearing A, the fixing ring B, the hammer rotor and the bearing B are installed on the central shaft from top to bottom in sequence, and each component is connected and matched with the other components respectively.

[0016] Preferably, the hammer rotor includes a four-tooth rotor, a six-tooth rotor and a hammer. The hammer is fixed to the tooth foot of the four-tooth rotor by bolts B. The cylindrical pore in the center of the hammer rotor is installed on the central axis and rotates with the central axis. Ore and other materials are continuously rubbed and extruded to achieve high-quality production of fracturing sand.

[0017] Furthermore, the hammer rotors are installed in an offset manner on the central axis to ensure that there are hammers in each direction, and there is a small gap between the upper and lower adjacent six hammer rotors to prevent mutual interference and blockage during production.

[0018] Preferably, the frame is made of channel steel, a support base is provided at the upper left of the frame for installing a variable frequency motor, and a bottom plate is provided at the lower right for bearing the mass of the entire fracturing sand production mechanism.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The fracturing sand production device based on the extrusion friction forming principle provided by the utility model has a novel structure and is easy to operate. By adjusting the speed of the variable frequency motor, fracturing sand with a mesh size of 75 to 150 or even higher can be produced. The fracturing sand produced by the friction extrusion fracturing sand production device has no cracks or edges, and the success rate of reaching the fracturing sand standard is as high as 80%. Compared with traditional impact equipment, the sand making efficiency is nearly doubled, which is convenient for industrial production and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is another perspective structural schematic diagram of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the utility model fracturing sand production mechanism;

[0024] Figure 4 It is a schematic diagram of the internal development structure of the fracturing sand production of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the mechanism on the central axis of the cylinder of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the hammer rotor of the utility model;

[0027] Figure 7 It is a structural schematic diagram of the six-tooth rotor of the utility model;

[0028] In the figure: 1. frame; 2. support seat; 3. frequency conversion motor; 4. belt; 5. upper cover bearing seat; 6. lower hopper; 7. cylinder; 8. movable cover; 9. lower cover base; 10. lower material outlet; 11. tooth plate; 12. driven wheel; 13. driving wheel; 14. bolt A; 15. support slider; 16. flange A; 17. screw hole A; 18. flange B; 19. screw hole B; 20. bottom plate; 21. center axis; 22. bearing A; 23. rectangular pore; 24. material distribution port; 25. fixing ring A; 26. stabilizing ring A; 27. hammer rotor; 28. fixing ring B; 29. ​​bearing B; 30. stabilizing ring B; 31. cylindrical pore; 32. four-tooth rotor; 33. hammer; 34. bolt B; 35. wear-resistant head; 36. six-tooth rotor. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the examples are only used to explain the utility model and are not used to limit the scope of the utility model.

[0030] like Figure 1 As shown, a fracturing sand production device based on the extrusion friction forming principle comprises a power mechanism, a fracturing sand production mechanism and a frame for installing various operating components. The power mechanism is powered by a variable frequency motor, and the power is transmitted to the fracturing sand production mechanism through a belt transmission device; the feed hopper of the fracturing sand production mechanism is arranged at the upper end of the upper cover bearing seat, and is used to load ore; four four-tooth rotors, two six-tooth rotors and an adjustable hammer rotor composed of a wear-resistant head and a hammer are staggeredly installed on the central axis of the middle cylinder through a cylindrical hole; a tooth plate on the inner layer of the cylinder is provided with a tooth groove; the lower end cover plate base is respectively connected to the cylinder and the bottom plate, and the discharge hopper is arranged below the bottom plate; the frame is mainly used to carry the power mechanism and the fracturing sand production mechanism; a movable cover plate (8) is provided on the outer side of the cylinder (7) to facilitate maintenance operations; a tooth plate (11) is provided on the inner side of the cylinder (7) to realize that when the internal hammer rotor (27) is running, the ore and the tooth grooves on the tooth plate (11) rub and squeeze each other, so as to obtain fracturing sand with higher mesh count and higher quality.

[0031] like Figure 1 , 2As shown in Figure 4, the variable frequency motor 3 in the power mechanism is installed on the support seat 2, and the output power of the variable frequency motor 3 is transmitted to the fracturing sand production mechanism through a belt transmission device. The driving wheel 13 in the belt transmission device is installed on the output shaft of the variable frequency motor 3, and the driven wheel 12 is installed on the central shaft 21. The belt 4 is used to connect the driving wheel 13 and the driven wheel 12 to transmit the output power of the variable frequency motor 3.

[0032] In this example, the variable frequency motor 3 is fixed to the slider of the support base 2 by bolts A14, and the support base 2 is installed on the frame 1.

[0033] like Figure 1 , 3 As shown in , 4, a lower hopper 6 and an upper cover bearing seat 5 are provided at the upper end of the fracturing sand production mechanism, wherein the two feet of the lower hopper 6 cooperate with the rectangular holes 23 at the left and right ends of the upper cover bearing seat 5, and the upper cover bearing seat 5 is installed on the central axis 21 through a bearing A22, and a screw hole 17 is provided at its edge, and the ore in the lower hopper 6 enters the cylinder 7 from the rectangular holes 23 at the left and right ends of the upper cover bearing seat 5 respectively.

[0034] like Figure 1 , 2 As shown in Figure 5, the middle end outer shell of the fracturing sand production mechanism mainly plays a protective role and is provided with a movable cover plate 8, and a tooth plate 11 is provided on the inner side, which cooperates with the hammer rotor 27 and the wear-resistant head 35 to achieve high mesh count and high quality production of fracturing sand.

[0035] In this example, six hammer rotors 27 are arranged on the central axis 21 inside the cylinder 7, and are staggeredly installed on the entire circumference; the central axis 21 is rotated by the power transmitted by the variable frequency motor 3, and at the same time drives the hammer rotor 27 to rotate, so that the ore can be fracturing sand produced under the action of the hammer rotor 27, the wear-resistant head 35 and the tooth grooves of the tooth plate 11.

[0036] like Figure 1 , 3 As shown in Figures 5 and 7, the lower cover base 9 at the lower end of the fracturing sand production mechanism is coaxial with the bearing B29 and is fixed to the bottom plate 20 through the screw holes 17A at its edge; the bottom plate 20 is mounted on the frame 1 to bear the mass of the entire fracturing sand production mechanism.

[0037] In this example, a discharge hopper 10 is provided at the lower end of the base plate 20, and the shape of the discharge hopper 10 is set to be hemispherical. An average of eight discharge port gaps are provided between the inner circle and the outer circle of the lower cover base 9 to guide the produced fracturing sand and reduce the cushioning force of the fracturing sand falling to the ground.

[0038] In this example, the flange A16 is installed below the upper cover bearing seat 5, and the flange B is installed on the upper end of the lower cover base 9 and fastened through the screw holes at the outer edge. The hammer 33 on the hammer rotor 27 is fixed to the tooth feet of the four-tooth rotor 32 and the six-tooth rotor 36 by bolts B34. The hammer rotor 27 is installed on the central shaft 21 and rotates with the central shaft. Under the interaction of the continuously rotating hammer rotor 27, the wear-resistant head 35 and the tooth grooves of the tooth plate 11, the ore and other materials are continuously rubbed and squeezed, thereby achieving high-quality production of fracturing sand.

[0039] like Figure 1 , 3 As shown, the frame 1 is made of channel steel to increase its hardness and bearing capacity. A support seat 2 and a bottom plate 20 are respectively provided at the left and right ends of the frame 1 for installing a variable frequency motor 3 and a lower cover base 9 for bearing the mass of all components of the entire device.

[0040] In the present invention, it needs to be explained that "upper", "lower" and the like are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that a specific orientation, structure and operation must be provided in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make a variety of similar expressions without violating the purpose and claims of the present invention, and such changes fall within the scope of protection of the present invention.

Claims

1. A fracturing sand production device based on the extrusion friction molding principle, characterized by: It includes a power mechanism, a fracturing sand production mechanism and a frame for installing various operating components: the power mechanism is powered by a variable frequency motor, and the power is transmitted to the fracturing sand production mechanism through a belt transmission device; the feed hopper of the fracturing sand production mechanism is arranged at the upper end of the upper cover bearing seat, and is used to load ore, and four four-tooth rotors, two six-tooth rotors and an adjustable hammer rotor composed of a wear-resistant head and a hammer are staggeredly installed on the central axis of the middle cylinder, and tooth grooves are arranged on the tooth plate of the inner layer of the cylinder, and the base of the lower end cover plate is respectively connected to the cylinder and the bottom plate, and the discharge hopper is arranged below the bottom plate; the frame is mainly used to carry the power mechanism and the fracturing sand production mechanism; The belt transmission device is used to transmit power and drive the hammer rotor to rotate continuously. The ore dropped from the lower hopper interacts with the hammer rotor inside the cylinder and produces high-mesh fracturing sand under the friction and extrusion action with the tooth grooves on the inner wall of the cylinder, and is discharged through the discharge hopper.

2. A fracturing sand production device based on the extrusion friction forming principle according to claim 1, characterized in that: The power mechanism comprises a support seat (2), a variable frequency motor (3), a driving wheel (13), a belt (4), and a driven wheel (12); the variable frequency motor (3) is mounted on the support seat (2) via a slider (15); the driving wheel (13) is mounted on the output shaft of the variable frequency motor (3); the driven wheel (12) is mounted on the central shaft (21); the driving wheel (13) and the driven wheel (12) are connected via a belt (4), thereby transmitting the output power of the variable frequency motor (3) to the central shaft (21) of the cylinder and driving it to rotate.

3. A fracturing sand production device based on the extrusion friction forming principle according to claim 2, characterized in that: The support base (2) is mounted on the frame (1), and the variable frequency motor (3) is fixed on a slider of the support base (2).

4. The fracturing sand production device based on the extrusion friction forming principle according to claim 1 is characterized by: The upper cover bearing seat (5) at the upper end of the fracturing sand production mechanism is installed on the central axis (21) through a bearing A (22), and rectangular holes (23) are symmetrically arranged on both sides. The two legs of the lower hopper (6) are respectively installed in cooperation with the rectangular holes (23) to enable the ore to be introduced into the lower cylinder (7).

5. A fracturing sand production device based on the extrusion friction forming principle according to claim 1 or 4, characterized in that: The outer side of the cylinder (7) is provided with a movable cover plate (8) to facilitate maintenance operations; the inner side of the cylinder (7) is provided with a tooth plate (11) for realizing mutual friction and compression between the ore and the tooth grooves on the tooth plate (11) when the internal hammer rotor (27) is running, so as to obtain fracturing sand with a higher mesh number and higher quality.

6. The fracturing sand production device based on the extrusion friction forming principle according to claim 1 is characterized by: The hammer rotors (27) are staggeredly installed on the central shaft (21) through the central cylindrical pores (31), and are driven to rotate by the rotation of the central shaft (21). The rotation speed can be adjusted by the speed of the variable frequency motor. Fracturing sand is produced under the interaction of multiple hammer rotors (27) and the friction and extrusion of the ore with the tooth grooves on the tooth plate (11) inside the cylinder (7).

7. The fracturing sand production device based on the extrusion friction forming principle according to claim 1 is characterized by: A lower cover base (9) is provided below the cylinder (7). The inner ring of the lower cover base (9) is mounted on the central shaft (21) via a bearing B (29). Eight discharge openings are provided between the inner ring and the outer ring for discharging the processed fracturing sand into a discharge hopper (10) below.

8. A fracturing sand production device based on the extrusion friction forming principle according to claim 1 or 7, characterized in that: The discharge hopper (10) is installed below the bottom plate (20) and is hemispherical in shape so that the fracturing sand can slowly fall to the ground after being discharged; The base plate (20) is mounted on the frame (1) to bear the mass of the entire fracturing sand production mechanism.

9. The fracturing sand production device based on the extrusion friction forming principle according to claim 4 is characterized by: The bearing A (22), the fixing ring A (25), the stabilizing ring A (26), the hammer rotor (27), the bearing B (29), the fixing ring B (28) and the stabilizing ring B (30) are all coaxial with the central axis (21) and cooperate with other components respectively.

10. The fracturing sand production device based on the extrusion friction forming principle according to claim 1, characterized in that: The hammer rotor (27) is composed of a four-tooth rotor, a six-tooth rotor (36) and a hammer (33). A cylindrical pore (31) is arranged at the center of the hammer rotor (27). The hammer (33) is fixed to the tooth feet of the four-tooth rotor (32) and the six-tooth rotor (36) by bolts B (34) and is driven to rotate by a central shaft (21) to realize the production of fracturing sand.

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