Sand material control system for electrically-driven sand mulling sledge

Abstract

The invention discloses a sand control system for an electrically-driven sand mulling sledge, and belongs to the field of sand conveying devices.The sand control system comprises a front-end passing ring, a plurality of sand collecting blades are fixed to the inner wall of the front-end passing ring, a plurality of supporting arms are fixed to the outer side of the front-end passing ring, and a connecting rod telescopic groove is formed in one end of each supporting arm; extension rods are inserted into the inner walls of the connecting rod telescopic grooves, and reset springs are fixed between the ends, inserted into the connecting rod telescopic grooves, of the extension rods and the inner side walls of the connecting rod telescopic grooves. Through the arrangement of the side sand collecting plates, the side sand collecting plates are matched with the sand collecting blades, so that the sand collecting range in the upper sand box can be expanded, the sand collecting efficiency is improved, collected sand is extruded to the bolt conveying rod from gaps between the multi-claw connecting discs, and it is guaranteed that the bolt conveying rod can rapidly and stably convey the sand out; and the phenomenon of flow cutoff during sand discharging is avoided, and unstable sand output caused by the flow cutoff phenomenon is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of sand conveying devices, and particularly to a sand control system for an electric drive sand mixing skid. Background Art

[0002] The sand mixing skid supplies quartz sand through an upper sand box and an upper sand component installed on the upper sand box. After being evenly mixed with fracturing fluid and proppant, a sand-carrying fluid is formed. The existing upper sand component drives a screw rod through a motor to transfer the quartz sand in the upper sand box. In this process, the stability and efficiency of the upper sand component in conveying quartz sand play a crucial role in forming a high-quality sand-carrying fluid.

[0003] The existing device has the following problems in conveying quartz sand through a screw rod: First, the screw rod is easily worn, causing gaps between the edge of the screw rod and the inner wall of the upper sand pipe, affecting the stability of quartz sand conveyance. Second, when the screw rod conveys quartz sand at high speed in the upper sand box, a cavity zone will be formed, resulting in a breakage phenomenon, and the supply amount of quartz sand cannot be accurately controlled, causing the mixing ratio of the sand-carrying fluid to be unbalanced, which is not conducive to improving the quality of fracturing operations. For this reason, we propose a sand control system for an electric drive sand mixing skid. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the existing technology cannot ensure the stability and efficiency of sand material conveyance by using a screw rod to convey quartz sand, and to propose a sand control system for an electric drive sand mixing skid.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A sand control system for an electric drive sand mixing skid includes a front-end through-ring. A plurality of sand collection leaves are fixed to the inner wall of the front-end through-ring. A plurality of support arms are fixed to the outer side of the front-end through-ring. One end of the support arm is provided with a connecting rod telescopic groove. An extension rod is inserted into the inner wall of the connecting rod telescopic groove. A return spring is fixed between the end of the extension rod inserted into the connecting rod telescopic groove and the inner side wall of the connecting rod telescopic groove. A telescopic cylinder is fixed to the side surface of the extension rod. A piston rod is inserted into the inner wall of the telescopic cylinder. A front-end chuck is fixed to one end of the piston rod. A side sand collection plate is hinged to the inner wall of the front-end chuck through a shaft. One end of the side sand collection plate is hinged to a torsion chuck through a shaft. One end of the torsion chuck is connected to a multi-claw connection disk through an alignment component, and the multi-claw connection disk is coaxial with the front-end through-ring. One end of the multi-claw connection disk is connected to a docking head through a clamping component. A driving component is arranged inside the docking head. One end of the driving component is connected to the front-end through-ring through a connection component. A feeding component is fixed to the other end of the docking head. A sand discharge component is arranged outside the feeding component. A storage component is arranged at one end of the sand discharge component.

[0007] Preferably, the direction adjustment component includes a connecting disc fixed to the side of the torsion chuck and a spiral torsion groove opened on the inner wall of the multi-claw connecting disc, one end of the torsion chuck is inserted into the inner wall of the multi-claw connecting disc, and one end of the connecting disc is inserted into the inner wall of the spiral torsion groove.

[0008] Preferably, the locking assembly includes a connecting tongue fixed to one end of the multi-claw connecting disk and a locking bolt inserted into the inner wall of the outer groove of the docking head, the connecting tongue is inserted into the inner wall of the outer groove of the docking head, and one end of the locking bolt is inserted into the inner wall of the connecting tongue.

[0009] Preferably, the driving assembly comprises a hydraulic telescopic rod plugged into the inner wall of the central hole of the docking joint, and the output end of the hydraulic telescopic rod passes through the central hole of the multi-claw connecting disk.

[0010] Preferably, the connection assembly comprises a connection frame fixed to the output end of the hydraulic telescopic rod, and one end of the connection frame is fixed to the surface of the front end through the ring.

[0011] Preferably, the feeding assembly comprises a spiral conveying rod fixed to the other end of the docking joint, and a gear plate is fixed to the top end of the spiral conveying rod.

[0012] Preferably, the sand material discharge assembly comprises a sand material outlet pipe sleeved on the outside of the spiral conveying rod, and one end of the sand material outlet pipe is inclined upward.

[0013] Preferably, the storage assembly comprises an upper sand box fixed to the bottom end of the sand material outlet pipe, and a base is fixed to the bottom of the upper sand box.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention provides a side sand collecting plate. The side sand collecting plate cooperates with the sand collecting leaves to expand the range of sand collection from the upper sand box, so as to improve the sand collecting efficiency. The collected sand is squeezed from the gap between the multi-claw connecting plates to the bolt conveying rod to ensure that the bolt conveying rod can quickly and stably convey the sand, avoiding the interruption of flow during sand discharge, resulting in unstable sand output.

[0016] 2. The present invention arranges a torsion chuck, which is connected to a multi-claw connecting plate through a connecting disc and a spiral torsion groove. When the hydraulic telescopic rod is driven, the side sand collecting plate can be driven to twist, thereby driving the side sand collecting plate to expand outward to collect sand materials, so as to ensure the sand material collection efficiency. The side sand collecting plate is twisted and the front end is squeezed through the annular spiral conveying rod, so that the collected sand materials are quickly squeezed to the spiral conveying rod, thereby avoiding interruption of sand material conveying and affecting the stability and accuracy of sand material conveying. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Structural schematic diagram of a sand material control system for an electric drive sand mixing skid proposed by the present invention;

[0018] Figure 2 Explosion structural schematic diagram of a sand material control system for an electric drive sand mixing skid proposed by the present invention;

[0019] Figure 3 Cross-sectional structural schematic diagram at the storage component of a sand material control system for an electric drive sand mixing skid proposed by the present invention;

[0020] Figure 4 Explosion structural schematic diagram at the drive component of a sand material control system for an electric drive sand mixing skid proposed by the present invention;

[0021] Figure 5 Structural schematic diagram at the side sand collecting plate of a sand material control system for an electric drive sand mixing skid proposed by the present invention;

[0022] Figure 6 Structural schematic diagram at the telescopic cylinder of a sand material control system for an electric drive sand mixing skid proposed by the present invention;

[0023] Figure 7 Structural schematic diagram at the direction adjusting component of a sand material control system for an electric drive sand mixing skid proposed by the present invention.

[0024] In the figure: 1, front end through-ring; 2, sand material collecting leaf; 3, support arm; 4, connecting rod telescopic groove; 5, extension rod; 6, return spring; 7, telescopic cylinder; 8, piston rod; 9, front end chuck; 10, side sand collecting plate; 11, torsion chuck; 12, multi-claw connecting disc; 13, docking head; 14, connecting disc; 15, spiral torsion groove; 16, connecting tongue; 17, locking bolt; 18, hydraulic telescopic rod; 19, connecting frame; 20, spiral conveyor rod; 21, sand material outlet pipe; 22, upper sand box; 23, base. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example, refer to Figures 1 to 7 , a sand material control system for an electric drive sand mixing skid, including a front end through-ring 1. A plurality of sand material collection leaves 2 are fixed to the inner wall of the front end through-ring 1. A plurality of support arms 3 are fixed to the outer side of the front end through-ring 1. And a link telescopic groove 4 is opened at one end of the support arm 3. An extension rod 5 is inserted into the inner wall of the link telescopic groove 4. A return spring 6 is fixed between the end of the extension rod 5 inserted into the link telescopic groove 4 and the inner side wall of the link telescopic groove 4. A telescopic cylinder 7 is fixed to the side surface of the extension rod 5. A piston rod 8 is inserted into the inner wall of the telescopic cylinder 7. A front end chuck 9 is fixed to one end of the piston rod 8. A side sand collecting plate 10 is hinged to the inner wall of the front end chuck 9 through a shaft. A torsion chuck 11 is hinged to one end of the side sand collecting plate 10 through a shaft.

[0029] The further advantages of adopting the above are as follows: The device collects sand materials at the front end through the sand collecting blades 2 on the inner wall of the front ring 1, and synchronously collects sand materials from the edges through the side sand collecting plates 10, so as to improve the sand collecting efficiency and ensure the stable transportation of sand materials by the spiral conveyor rod 20. At the same time, the hydraulic telescopic rod 18 makes a piston movement. When the hydraulic telescopic rod 18 contracts, the support arm 3 squeezes the side sand collecting plate 10, and the extension rod 5 extends outwards in the connecting rod telescopic groove 4, so that one end of the side sand collecting plate 10 close to the extension rod 5 expands outwards to collect sand materials. At the same time, after the side sand collecting plate 10 is squeezed, it will drive the torsion chuck 11 connected thereto to twist through the connecting disc 14 and the spiral torsion groove 15, reducing the gap between two adjacent side sand collecting plates 10, so as to squeeze the sand materials collected between the side sand collecting plates 10 and inside the front through-ring 1 into the spiral conveyor rod 20 through the gaps of the multi-claw connecting disc 12. To ensure the stable transportation of sand materials by the spiral conveyor rod 20, the collected sand materials are squeezed into the sand material outlet pipe 21 by the above technical means, and the wear of the spiral conveyor rod 20 by the sand materials can also be reduced.

[0030] One end of the torsion chuck 11 is connected with a multi-claw connecting disc 12 through an alignment component, and the multi-claw connecting disc 12 is coaxial with the front through-ring 1. Further, the alignment component includes a connecting disc 14 fixed on the side surface of the torsion chuck 11 and a spiral torsion groove 15 opened on the inner wall of the multi-claw connecting disc 12. One end of the torsion chuck 11 is inserted into the inner wall of the multi-claw connecting disc 12, and one end of the connecting disc 14 is inserted into the inner wall of the spiral torsion groove 15.

[0031] The further advantages of adopting the above are as follows: After the side sand collecting plate 10 is squeezed, the connecting disc 14 deflects through the spiral torsion groove 15, reducing the gap between two adjacent side sand collecting plates 10, providing favorable conditions for conveniently squeezing the collected sand materials from the gaps of the multi-claw connecting disc 12 to the spiral conveyor rod 20.

[0032] One end of the multi-claw connecting disc 12 is connected with a docking head 13 through a clamping component. Further, the clamping component includes a connecting tongue 16 fixed at one end of the multi-claw connecting disc 12 and a locking bolt 17 inserted into the inner wall of the outer groove of the docking head 13. The connecting tongue 16 is inserted into the inner wall of the outer groove of the docking head 13, and one end of the locking bolt 17 is inserted into the inner wall of the connecting tongue 16.

[0033] The further advantages of adopting the above are as follows: The connecting tongue 16 is inserted into the inner wall of the outer groove of the docking head 13, which can connect the multi-claw connecting disc 12 with the spiral conveyor rod 20. The locking bolt 17 can ensure that the connecting tongue 16 and the docking head 13 do not separate, so as to ensure that the multi-claw connecting disc 12 rotates to collect sand materials when the spiral conveyor rod 20 rotates.

[0034] The inside of the docking head 13 is provided with a driving component. Further, the driving component includes a hydraulic telescopic rod 18 inserted into the inner wall of the central hole of the docking head 13, and the output end of the hydraulic telescopic rod 18 penetrates through the central hole of the multi-claw connecting disk 12.

[0035] The advantage of the above is that: The hydraulic telescopic rod 18 serves as the power source for the deflection of the side sand collecting plate 10 and the reduction of the gap between two adjacent side sand collecting plates 10, providing a basis for ensuring the stability of sand material collection.

[0036] One end of the driving component is connected to the front-end through-ring 1 through an adapter component. Further, the adapter component includes an adapter bracket 19 fixed to the output end of the hydraulic telescopic rod 18, and one end of the adapter bracket 19 is fixed to the surface of the front-end through-ring 1.

[0037] The advantage of the above is that: The adapter bracket 19 can connect the output end of the hydraulic telescopic rod 18 with the front-end through-ring 1, so that when the telescopic end of the hydraulic telescopic rod 18 contracts, it drives the front-end through-ring 1 to move towards the spiral conveyor 20, squeezing the sand material to the spiral conveyor 20.

[0038] The other end of the docking head 13 is fixed with a feeding component. Further, the feeding component includes a spiral conveyor 20 fixed to the other end of the docking head 13, and a gear disk is fixed to the top of the spiral conveyor 20.

[0039] The advantage of the above is that: When the spiral conveyor 20 rotates, it can quickly convey the sand material collected by the side sand collecting plate 10 and the sand collecting blade 2.

[0040] The outside of the feeding component is provided with a sand discharging component. Further, the sand discharging component includes a sand leading-out pipe 21 sleeved on the outside of the spiral conveyor 20, and one end of the sand leading-out pipe 21 is inclined upward.

[0041] The advantage of the above is that: The sand leading-out pipe 21 cooperates with the spiral conveyor 20. After the spiral conveyor 20 rotates, it can discharge the sand material from the sand leading-out pipe 21. The spiral conveyor 20 is driven by the gear disk at the top to convey the sand material by an external motor.

[0042] One end of the sand discharging component is provided with a storage component. Further, the storage component includes an upper sand box 22 fixed to the bottom end of the sand leading-out pipe 21, and a base 23 is fixed to the bottom of the upper sand box 22.

[0043] The advantage of the above is that: The upper sand box 22 serves as a sand storage device.

[0044] When the present invention is in use, the sand material is stored inside the upper sand box 22. The spiral conveyor 20 is driven by a motor through the meshing gear at the top to convey the sand material out of the sand leading-out pipe 21;

[0045] When the spiral conveyor rod 20 rotates, it drives the multi-claw connecting disc 12 to rotate through the docking head 13 connected thereto. When the multi-claw connecting disc 12 rotates, it can drive the side sand collecting plate 10 connected thereto and the sand collecting blade 2 connected to the side sand collecting plate 10 to rotate, and collect the sand in the upper sand box 22.

[0046] When the above actions are carried out, the hydraulic telescopic rod 18 works to perform a piston movement. When the hydraulic telescopic rod 18 contracts, the support arm 3 squeezes the side sand collecting plate 10, and the extension rod 5 extends outward in the link telescopic groove 4, so that one end of the side sand collecting plate 10 close to the extension rod 5 expands outward to collect sand. At the same time, after the side sand collecting plate 10 is squeezed, it will drive the torsion chuck 11 connected thereto to twist through the connecting disc 14 and the spiral torsion groove 15, reducing the gap between two adjacent side sand collecting plates 10, so as to squeeze the sand collected between the side sand collecting plate 10 and the front end through the inside of the ring 1 into the spiral conveyor rod 20 through the gap of the multi-claw connecting disc 12.

[0047] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A sand material control system for an electrically driven sand mixing sled, comprising a front end passing ring (1), characterized in that: A plurality of sand collecting leaves (2) are fixed to the inner wall of the front end through the ring (1), a plurality of support arms (3) are fixed to the outer side of the front end through the ring (1), and a connecting rod telescopic groove (4) is provided at one end of the support arm (3), an extension rod (5) is inserted into the inner wall of the connecting rod telescopic groove (4), a return spring (6) is fixed between the extension rod (5) and the inner wall of the connecting rod telescopic groove (4), a telescopic cylinder (7) is fixed to the side of the extension rod (5), a piston rod (8) is inserted into the inner wall of the telescopic cylinder (7), a front end chuck (9) is fixed to one end of the piston rod (8), and a side sand collecting plate ( 10), one end of the side sand collecting plate (10) is hinged with a torsion chuck (11) through an axis, one end of the torsion chuck (11) is connected to a multi-claw connecting plate (12) through a direction adjustment component, and the multi-claw connecting plate (12) is coaxial with the front end through a ring (1), one end of the multi-claw connecting plate (12) is connected to a docking head (13) through a snap-fit ​​component, a driving component is provided inside the docking head (13), one end of the driving component is connected to the front end through the ring (1) through a connection component, a feeding component is fixed to the other end of the docking head (13), a sand material discharge component is provided on the outside of the feeding component, and a storage component is provided at one end of the sand material discharge component.

2. A sand material control system for an electrically driven sand mixing skid according to claim 1, characterized in that: The direction adjustment component comprises a connecting disc (14) fixed to the side of the torsion chuck (11) and a spiral torsion groove (15) opened on the inner wall of the multi-claw connecting disc (12); one end of the torsion chuck (11) is plugged into the inner wall of the multi-claw connecting disc (12), and one end of the connecting disc (14) is plugged into the inner wall of the spiral torsion groove (15).

3. The sand material control system for an electrically driven sand mixing skid according to claim 1, characterized in that: The engaging assembly comprises a connecting tongue (16) fixed to one end of the multi-claw connecting plate (12) and a locking bolt (17) plugged into the inner wall of the outer groove of the docking head (13); the connecting tongue (16) is plugged into the inner wall of the outer groove of the docking head (13); and one end of the locking bolt (17) is plugged into the inner wall of the connecting tongue (16).

4. The sand material control system for an electrically driven sand mixing skid according to claim 1, characterized in that: The driving assembly comprises a hydraulic telescopic rod (18) plugged into the inner wall of the central hole of the docking head (13), and the output end of the hydraulic telescopic rod (18) passes through the central hole of the multi-claw connecting plate (12).

5. A sand material control system for an electrically driven sand mixing skid according to claim 4, characterized in that: The connection assembly comprises a connection frame (19) fixed to the output end of the hydraulic telescopic rod (18), and one end of the connection frame (19) is fixed to the surface of the front end through the ring (1).

6. The sand material control system for an electrically driven sand mixing skid according to claim 1, characterized in that: The feeding assembly comprises a spiral conveying rod (20) fixed to the other end of the docking head (13), and a gear plate is fixed to the top end of the spiral conveying rod (20).

7. A sand material control system for an electrically driven sand mixing skid according to claim 6, characterized in that: The sand material discharge assembly comprises a sand material outlet pipe (21) sleeved on the outside of the spiral conveying rod (20), and one end of the sand material outlet pipe (21) is arranged to be inclined upward.

8. The sand material control system for an electrically driven sand mixing skid according to claim 7, characterized in that: The storage assembly comprises an upper sand box (22) fixed to the bottom end of the sand material outlet pipe (21), and a base (23) is fixed to the bottom of the upper sand box (22).

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