Powder drag reducing agent fully automatic online continuous mixing equipment

Abstract

The present invention discloses a fully automatic online continuous mixing device for a powder drag reducer, which specifically relates to the technical field of drag reducer mixing, including a water storage tank, a mixing component and a blending component, wherein the mixing component includes a mixing tank, wherein a stirring member is arranged in the mixing tank, and the blending component includes a material storage tank, wherein a conveying member is arranged in the material storage tank, wherein the conveying member is connected to the inner cavity of the mixing tank, and the blending component can adjust the viscosity of the liquid in the mixing tank through the mixing component, wherein the stirring member includes a rotating shaft rotating in the mixing tank, wherein a motor is fixedly connected to the top of the mixing tank, wherein the output end of the motor is fixedly connected to the rotating shaft, and wherein a plurality of stirring rods for stirring the liquid in the mixing tank are evenly arranged in the circumferential direction at the bottom of the rotating shaft. Through compression and relaxation of a third elastic member, the acute angle formed by the axis line of the sealing cover and the second conveying pipe is continuously changed according to the change of the viscosity of the mixed liquid in the mixing tank, and the viscosity of the mixed liquid in the mixing tank is adjusted in real time while continuous mixing is performed.

Description

Technical Field

[0001] The invention relates to the technical field of drag reducer mixing, and more specifically to fully automatic online continuous mixing equipment for powder drag reducers. Background Art

[0002] Fracturing technology is the core engineering technology of today's oil and gas industry, and fracturing fluid is the "blood" of reservoir reconstruction engineering. At present, more than 95% of fracturing fluids, one of the core technologies of the shale oil and gas revolution at home and abroad, use water-based fracturing fluids with excellent comprehensive performance, of which low-cost slickwater fracturing fluids account for more than 90%. The core component of slickwater fracturing fluids is drag reducers, including three types: synthetic emulsions, suspensions and powdered particles.

[0003] However, powder drag reducers are prone to powder dispersion, slow swelling, and fisheye formation during mixing. The preparation process is cumbersome, and the liquid after preparation is unevenly layered. It is impossible to achieve online instant mixing and injection. It is necessary to prepare the liquid in advance or use a buffer tank, which has low construction efficiency. Efficient online continuous mixing technology is an urgent need for modern hydraulic fracturing factory operations.

[0004] For example, the Chinese patent with application number 202410458905.7 discloses an online mixing device and method for dry powder of oilfield fracturing fluid. The invention relates to the technical field of fracturing fluid mixing equipment, including: a liquid material processing equipment located on the left, a liquid material online conveying equipment connected to the right side of the liquid material processing equipment, and a powder-liquid mixing equipment connected to the right side of the liquid material online conveying equipment; wherein, the liquid material processing equipment includes a clean water treatment tank, and a clean water treatment tank fixed on the rear side of the upper surface of the clean water treatment tank. In the technical scheme of the invention, two storage tanks are used to pre-treat the clean water and the thickener, and multiple valves installed with electromagnetic flowmeters and connected to the Internet of Things are used on the intersection pipeline to achieve the effect of direct solution delivery or delivery after pre-mixing treatment and powder proportioning, and the powder conveying mechanism is mixed with the solution after calculation by the delivery amount calculation formula, so that the amount of fracturing fluid production can be controlled online while achieving precise proportioning. However, the invention still has the problem that the powder transported into the mixing tank by the transport auger is compacted by the transport auger, resulting in uneven mixing of the powder and failure to ensure the viscosity of the mixed liquid.

[0005] To this end, the present invention proposes a fully automatic online continuous mixing device for powder drag reducer to solve the above problems. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a fully automatic online continuous mixing device for powder drag reducers, which solves the problems raised in the above-mentioned background technology by cooperating with a mixing component and a blending component.

[0007] To achieve the above object, the present invention provides the following technical solution: a fully automatic online continuous mixing device for powder drag reducer, comprising a water storage tank and:

[0008] A mixing component, the mixing component includes a mixing tank, and a stirring member is arranged in the mixing tank; a dispensing component, the dispensing component includes a storage tank, and a conveying member is arranged in the storage tank, and the conveying member is connected with the inner cavity of the mixing tank, and the dispensing component can adjust the viscosity of the liquid in the mixing tank through the mixing component; the stirring member includes a rotating shaft rotating in the mixing tank, a motor is fixedly connected to the top of the mixing tank, and the output end of the motor is fixedly connected to the rotating shaft, a cavity is provided in the rotating shaft, and a plurality of stirring rods for stirring the liquid in the mixing tank are evenly arranged circumferentially at the bottom of the rotating shaft, each of the stirring rods has a cavity, and the inner cavity of the rotating shaft is connected with the inner cavities of the plurality of stirring rods, and one end of the rotating shaft extending out of the bottom of the mixing tank is connected with the water storage tank through a connecting member and a pipeline, each of the stirring rods has a plurality of water outlets for driving the rotating shaft to rotate, and each of the stirring rods is provided with an adjusting member for intercepting the inner cavity of the stirring rod according to the viscosity of the liquid.

[0009] Preferably, each of the adjusting members includes a fixed block respectively fixed on the outer wall of each of the stirring rods, each of the fixed blocks is slidably connected with a sliding block, each of the sliding blocks is fixedly connected to a shut-off rod at one end close to the stirring rod, each of the shut-off rods has a hemispherical end extending out of the fixed block, each of the hemispherical ends of the shut-off rods extends into the corresponding inner cavity of the stirring rod, each of the outer walls of the shut-off rods is sleeved with a first elastic member, one end of each of the first elastic members is connected to an end of the sliding block close to the shut-off rod, the other end of each of the first elastic members is connected to the corresponding fixed block, each of the sliding blocks has a push rod fixedly connected to one end away from the shut-off rod, each of the push rods has a resistance disk fixedly connected to one end extending out of the fixed block, and each resistance disk is evenly provided with a plurality of conical holes.

[0010] Preferably, the outer wall of one end of the rotating shaft close to the motor is fixedly connected to the third pulley, the outer wall of one end of the rotating shaft extending out of the bottom of the mixing tank is fixedly connected to the first pulley, the outer wall of one end of the rotating shaft close to the third pulley is fixedly connected to a flow guide member, and a flow guide hole is opened at one end of the rotating shaft close to the third pulley, and the flow guide hole is communicated with the inner cavity of the rotating shaft.

[0011] Preferably, the guide member is provided with an annular groove, which is connected with the guide hole, and a guide cavity and an air collecting cavity are arranged in the guide member. The guide member is provided with holes which are respectively connected with the annular groove and the guide cavity, and a first piston is slidably connected in the guide cavity. One end of the first piston close to the hole is fixedly connected with a connecting rod, and one end of the connecting rod extending into the air collecting cavity is fixedly connected with a second piston, and the outer wall of the connecting rod is sleeved with a second elastic member.

[0012] Preferably, one end of the second elastic member is connected to one end of the second piston close to the connecting rod, and the other end of the second elastic member is connected to the inner wall of the air collecting chamber. A spray hole connected to the guide chamber is provided at the bottom of the guide member. When the second elastic member is compressed to the maximum limit position and the first piston moves and passes over the spray hole, the spray hole is connected to the annular groove through the hole. An outlet hole for discharging the gas in the air collecting chamber is provided on one side of the guide member.

[0013] Preferably, the conveying member includes a first conveying pipe arranged in the storage tank, an auger is rotatably connected in the first conveying pipe, one end of the auger extending out of the bottom of the storage tank is fixedly connected to a second pulley, the top side wall of the first conveying pipe is fixedly connected to a second conveying pipe, one end of the second conveying pipe extending out of the storage tank is fixedly connected to a third conveying pipe, the third conveying pipe is connected to the inner cavity of the mixing tank, a notch connected to the storage tank is formed at the bottom of the second conveying pipe, a sealing cover for closing the notch is hinged on the outer wall of the second conveying pipe, an air cylinder is hinged on the inner top of the storage tank, and the second pulley is connected to the first pulley through a transmission belt.

[0014] Preferably, a third piston is slidably connected in the air cylinder, and one end of the third piston close to the sealing cover is fixedly connected to a pull rod, and one end of the pull rod extending out of the air cylinder is hinged to the sealing cover.

[0015] Preferably, a third elastic member is sleeved on the outer wall of the pull rod, one end of the third elastic member is connected to an end of the third piston close to the pull rod, the other end of the third elastic member is connected to the gas cylinder, and an air inlet hole is opened on the side wall of the end of the gas cylinder away from the pull rod, and the air inlet hole is connected to the air outlet hole through a pipeline.

[0016] Preferably, a sixth pulley is provided on the top of the third conveying pipe, a rotating rod is fixedly connected to the bottom of the sixth pulley, one end of the rotating rod extending out of the third conveying pipe is fixedly connected to a dispersion disk, the dispersion disk comprises a cone, wherein the inclined surface of the cone is provided with a plurality of evenly distributed diverter rods and diverter plates for dispersion.

[0017] Preferably, a fixing part is provided on the top of the mixing tank, a transmission shaft is rotatably connected inside the fixing part, one end of the transmission shaft extending out of the top of the fixing part is fixedly connected to the fifth pulley, one end of the transmission shaft extending out of the fixing part into the mixing tank is fixedly connected to the fourth pulley, the fourth pulley is connected to the third pulley through a transmission belt, and the fifth pulley is connected to the sixth pulley through a transmission belt.

[0018] Technical effects and advantages of the present invention:

[0019] 1. The present invention injects high-pressure water in a water storage tank into the inner cavity of a rotating shaft and a stirring rod, so that while the stirring rod injects water into the mixing tank, the second pulley drives the auger to continuously rotate to transport materials into the mixing tank. While injecting water in the mixing tank, the transported materials are synchronously stirred to mix the materials evenly, thereby preventing the problem of low mixing efficiency due to adding materials after water injection and high energy consumption caused by excessive load during initial stirring and mixing.

[0020] 2. The present invention causes the dispersion disk to divide and disperse the material compacted by the auger while the rotating rod rotates, so that the material entering the mixing tank through the third conveying pipe is evenly dispersed, and the stirring rod can further mix the material evenly, avoiding the problem of uneven mixing of the liquid after stirring due to the auger compacting the material when conveying the material, resulting in the inability to mix quickly through the stirring rod.

[0021] 3. According to the present invention, as the viscosity of the mixed liquid in the mixing tank changes, the cutoff surface of the inner cavity of the stirring rod is adjusted by the cutoff rod, and the high-pressure water located in the inner cavity of the rotating shaft enters the inner cavity of the mixing tank through the spray hole to dilute the mixed liquid with excessive viscosity in the mixing tank, thereby preventing the mixed liquid in the mixing tank from having too high viscosity, which causes the liquid to flow slowly in the well wall during fracturing, resulting in increased hydraulic loss and limiting the expansion of cracks. The third elastic member is compressed and relaxed, so that the acute angle formed by the axis of the sealing cover and the second conveying pipe is continuously changed according to the change of the viscosity of the mixed liquid in the mixing tank, and the viscosity of the mixed liquid in the mixing tank is adjusted in real time while continuous mixing is performed. The motor is energized so that the stirring rod further stirs the mixed liquid in the mixing tank, thereby preventing the stirring liquid in the mixing tank from being unevenly stirred and stratified. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the internal structure of the mixing tank of the present invention.

[0024] Figure 3 It is a cross-sectional view of the storage tank of the present invention.

[0025] Figure 4It is a cross-sectional view of an air cylinder of the present invention.

[0026] Figure 5 It is a schematic cross-sectional view of the rotating shaft of the present invention.

[0027] Figure 6 It is an exploded view of the rotating shaft of the present invention.

[0028] Figure 7 It is a cross-sectional view of the fixing block of the present invention.

[0029] Figure 8 It is a cross-sectional view of the resistance disk of the present invention.

[0030] Fig. 9 It is a schematic diagram of the annular groove structure of the present invention.

[0031] Fig.10 It is a schematic cross-sectional view of the flow guide member of the present invention.

[0032] The accompanying drawings are marked as follows:

[0033] 1. water storage tank; 2. mixing assembly; 21. mixing tank; 211. motor; 212. fixing member; 213. fifth pulley; 214. fourth pulley; 22. stirring member; 221. rotating shaft; 222. stirring rod; 23. adjusting member; 231. fixing block; 232. sliding block; 233. intercepting rod; 234. first elastic member; 235. push rod; 236. resistance plate; 24. third pulley; 25. first pulley; 26. flow guide member; 261. annular groove; 262. flow guide cavity; 263. air collecting cavity; 264. first A piston; 265, a connecting rod; 266, a second piston; 267, a second elastic member; 268, a spray hole; 269, an air outlet; 3, a mixing assembly; 31, a storage tank; 32, a conveying member; 321, a first conveying pipe; 322, a screwdriver; 323, a second pulley; 324, a second conveying pipe; 325, a third conveying pipe; 33, a sealing cover; 34, an air cylinder; 341, a third piston; 342, a pull rod; 343, a third elastic member; 344, an air inlet; 35, a sixth pulley; 36, a rotating rod; 361, a dispersion disk. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1

[0036] During mixing, water is usually added to a suitable amount first, and then the water in the mixing tank is stirred. A certain amount of material is continuously added during stirring. When the material is added unevenly, the mixing efficiency is easily low, resulting in excessive load during stirring and mixing, which may damage the motor. This embodiment is specially invented to solve the above problems.

[0037] See also Figure 1 The fully automatic online continuous mixing equipment of the powder drag reducer according to one embodiment of the present invention comprises a water storage tank 1, a mixing component 2 and a blending component 3.

[0038] See also Figure 2 The mixing component 2 includes a mixing tank 21, in which a stirring element 22 is provided. The preparation component 3 includes a storage tank 31, in which a conveying element 32 is provided. The conveying element 32 is connected to the inner cavity of the mixing tank 21. The preparation component 3 can adjust the viscosity of the liquid in the mixing tank 21 through the mixing component 2.

[0039] See also Figure 3 The stirring member 22 includes a rotating shaft 221 rotating in the mixing tank 21, wherein a liquid level sensor is provided in the mixing tank 21, the liquid level sensor is electrically connected to the controller, and the liquid level sensor is used to detect the liquid height in the mixing tank 21. A motor 211 is fixedly connected to the top of the mixing tank 21, the motor 211 is electrically connected to the controller, and the output end of the motor 211 is fixedly connected to the rotating shaft 221; Figure 5 A cavity is defined in the rotating shaft 221, and a plurality of stirring rods 222 for stirring the liquid in the mixing tank 21 are evenly arranged around the bottom of the rotating shaft 221, each stirring rod 222 has a cavity defined in it, the inner cavity of the rotating shaft 221 is communicated with the inner cavities of the plurality of stirring rods 222, and one end of the rotating shaft 221 extending out of the bottom of the mixing tank 21 is communicated with the water storage tank 1 through a connector and a pipeline, wherein a first solenoid valve is provided in a pipeline leading from the water storage tank 1 to the inner cavity of the rotating shaft 221, and the first solenoid valve is electrically connected to a controller, which is prior art and will not be described in detail herein, and each stirring rod 222 has a plurality of water outlets for driving the rotating shaft 221 to rotate.

[0040] See also Figure 2 and Figure 3The conveying member 32 includes a first conveying pipe 321 arranged in the storage tank 31, and an auger 322 is rotatably connected in the first conveying pipe 321, and one end of the auger 322 extending out of the bottom of the storage tank 31 is fixedly connected to a second pulley 323, and the top side wall of the first conveying pipe 321 is fixedly connected to a second conveying pipe 324, and one end of the second conveying pipe 324 extending out of the storage tank 31 is fixedly connected to a third conveying pipe 325, the third conveying pipe 325 is connected to the inner cavity of the mixing tank 21, the second pulley 323 is transmission-connected to the first pulley 25 through a transmission belt, and a liquid outlet pipe is arranged at the bottom of the mixing tank 21, and a second solenoid valve is arranged in the liquid outlet pipe, and the second solenoid valve is electrically connected to the controller, wherein the second solenoid valve is controlled by the controller to discharge the mixed liquid in the mixing tank 21 through the liquid outlet pipe.

[0041] When in use, the first solenoid valve is energized through the controller, and the high-pressure water in the water storage tank 1 enters the inner cavity of the rotating shaft 221 through the pipeline and the connector, and the high-pressure water enters the inner cavity of the stirring rod 222 through the inner cavity of the rotating shaft 221. At this time, the high-pressure water is discharged through the multiple water outlets opened by the stirring rod 222. At the same time, the water discharge through the multiple water outlets of the stirring rod 222 causes the rotating shaft 221 to rotate clockwise in the mixing tank 21. The rotation of the rotating shaft 221 drives the first pulley 25 to rotate. The rotation of the first pulley 25 drives the second pulley 323 to rotate through the transmission belt. The rotation of the second pulley 323 drives the auger 322 in the first conveying pipe 3 21 rotates, and the auger 322 transports the material in the storage tank 31 while rotating. Through the continuous rotation of the auger 322, the material located at the bottom of the storage tank 31 is gradually transported to the second conveying pipe 324, and enters the second conveying pipe 324 in turn. Through the inclined setting of the second conveying pipe 324, the material located in the second conveying pipe 324 can continuously slide into the third conveying pipe 325 under the action of its own gravity. As the auger 322 continuously transports the material, the material continuously enters the inner cavity of the mixing tank 21 through the third conveying pipe 325, and the stirring rod 222 stirs the material dropped into the mixing tank 21.

[0042] To summarize, by injecting high-pressure water in the water storage tank 1 into the inner cavity of the rotating shaft 221 and the stirring rod 222, while water is injected into the mixing tank 21 through the stirring rod 222, the second pulley 323 drives the auger 322 to continuously rotate and transport materials into the mixing tank 21, so that the conveyed materials in the mixing tank 21 are synchronously stirred while water is being injected, so that the materials are mixed evenly, thereby preventing the mixing efficiency from being low due to the addition of materials after water injection, and the problem of high energy consumption caused by excessive load during initial stirring and mixing.

[0043] Example 2

[0044] In the above-mentioned embodiment, it is found that although the material in the mixing tank 21 is synchronously stirred by the stirring rod 222 while the material is rotated and transported by the auger 322, the auger 322 squeezes the material when transporting the material, so that the material is compacted. After the bulk material enters the mixing tank 21, the stirring rod 222 cannot quickly mix the bulk material, resulting in uneven mixing of the liquid after stirring. For this reason, this embodiment is specially invented.

[0045] See also Figure 3 , Figure 4 and Figure 5 The outer wall of one end of the rotating shaft 221 close to the motor 211 is fixedly connected to the third pulley 24, the outer wall of one end of the rotating shaft 221 extending out of the bottom of the mixing tank 21 is fixedly connected to the first pulley 25, the outer wall of one end of the rotating shaft 221 close to the third pulley 24 is fixedly connected to the guide member 26, a fixing member 212 is arranged on the top of the mixing tank 21, a transmission shaft is rotatably connected in the fixing member 212, one end of the transmission shaft extending out of the top of the fixing member 212 is fixedly connected to the fifth pulley 213, and one end of the transmission shaft extending out of the fixing member 212 into the mixing tank 21 is fixedly connected to the fifth pulley 213. A fourth pulley 214 is fixedly connected, and the fourth pulley 214 is transmission-connected to the third pulley 24 via a transmission belt, and the fifth pulley 213 is transmission-connected to the sixth pulley 35 via a transmission belt, a sixth pulley 35 is arranged on the top of the third conveying pipe 325, a rotating rod 36 is fixedly connected to the bottom of the sixth pulley 35, and one end of the rotating rod 36 extending out of the third conveying pipe 325 is fixedly connected to a dispersion disk 361, and the dispersion disk 361 comprises a cone, wherein the inclined surface of the cone is provided with a plurality of evenly distributed diverter rods and diverter plates for dispersion.

[0046] On the basis of the above embodiment, the rotating shaft 221 drives the third pulley 24 while rotating, and the third pulley 24 rotates while the fourth pulley 214 rotates through the transmission belt, and the fourth pulley 214 rotates while the fifth pulley 213 rotates through the transmission shaft, and the fifth pulley 213 rotates while the sixth pulley 35 rotates through the transmission belt, and the sixth pulley 35 rotates while the rotating rod 36 rotates, so that the dispersion disk 361 rotates along with the rotating rod 36, and when the material falling through the third conveying pipe 325 touches the dispersion disk 361, the material is divided by multiple diverter plates, and the divided material slides along the inclined surface of the cone under the action of the diverter rod, and at the same time, the continuous rotation of the dispersion disk 361 makes the material falling on the conical surface of the dispersion disk 361 fall evenly into the mixing tank 21 under the action of centrifugal force, and the material is further evenly mixed by the stirring rod 222.

[0047] To summarize, by rotating the rotating rod 36, the dispersion disk 361 divides and disperses the material compacted by the auger 322, so that the material entering the mixing tank 21 through the third conveying pipe 325 is evenly dispersed, and then the stirring rod 222 further mixes the material evenly, thereby avoiding the problem of uneven mixing of the liquid after stirring due to compaction of the material by the auger 322 when conveying the material, resulting in the inability to mix quickly through the stirring rod 222.

[0048] Example 3

[0049] It is found that when using the above-mentioned embodiment, as the material entering the mixing tank 21 through the third delivery pipe 325 continues to increase, the viscosity of the mixed liquid in the mixing tank 21 continues to increase, and then the stirring efficiency of the stirring rod 222 continues to decrease with the increase of the viscosity of the mixed liquid in the mixing tank 21, so that the mixed liquid will be stratified as the material is added again, resulting in the problem that online continuous mixing cannot be achieved. For this reason, this embodiment is specially invented.

[0050] See also Figure 5 and Figure 6 A guide hole is provided at one end of the rotating shaft 221 close to the third pulley 24, and the guide hole is connected to the inner cavity of the rotating shaft 221. Each stirring rod 222 is provided with an adjusting member 23 for intercepting the inner cavity of the stirring rod 222 according to the viscosity of the liquid; Figure 7 and Figure 8 Each adjusting member 23 includes a fixed block 231 fixed on the outer wall of each stirring rod 222, each fixed block 231 is slidably connected with a sliding block 232, each sliding block 232 is fixedly connected with a shutoff rod 233 at one end close to the stirring rod 222, each shutoff rod 233 extends out of the fixed block 231 at one end and is hemispherical, and each hemispherical end of the shutoff rod 233 extends into the corresponding inner cavity of the stirring rod 222, and the outer wall of each shutoff rod 233 is sleeved with a first elastic member 234, wherein The first elastic member 234 is a spring, one end of each first elastic member 234 is connected to one end of the sliding block 232 close to the shut-off rod 233, the other end of each first elastic member 234 is connected to the corresponding fixed block 231, one end of each sliding block 232 away from the shut-off rod 233 is fixedly connected to a push rod 235, and one end of each push rod 235 extending out of the fixed block 231 is fixedly connected to a resistance disk 236, each resistance disk 236 is evenly provided with a plurality of conical holes, and the liquid enters from the large hole of the conical hole and flows out from the small hole.

[0051] See also Fig. 9 and Fig.10The guide member 26 is provided with an annular groove 261, which is connected to the guide hole. A guide cavity 262 and a gas collecting cavity 263 are provided in the guide member 26. Holes respectively connected to the annular groove 261 and the guide cavity 262 are provided in the guide member 26. A first piston 264 is slidably connected in the guide cavity 262. A connecting rod 265 is fixedly connected to one end of the first piston 264 near the hole. A second piston 266 is fixedly connected to one end of the connecting rod 265 extending into the gas collecting cavity 263. A second elastic member 267 is sleeved on the outer wall of the connecting rod 265. The second elastic member 267 is a spring, one end of the second elastic member 267 is connected to one end of the second piston 266 close to the connecting rod 265, and the other end of the second elastic member 267 is connected to the inner wall of the gas collecting chamber 263. A spray hole 268 connected to the guide chamber 262 is provided at the bottom of the guide member 26. When the second elastic member 267 is compressed to the maximum limit position, the first piston 264 moves and passes over the spray hole 268, and the spray hole 268 is connected to the annular groove 261 through the hole. An outlet hole 269 for discharging the gas in the gas collecting chamber 263 is provided on one side of the guide member 26.

[0052] See also Figure 3 , Figure 4 and Figure 5 The bottom of the second delivery pipe 324 is provided with a gap connected to the storage tank 31, and the outer wall of the second delivery pipe 324 is hinged with a sealing cover 33 for closing the gap, wherein the sealing cover 33 and the outer wall of the second delivery pipe 324 are hinged with a control switch, wherein the control switch is used to control the power supply of the motor 211, and the inner top of the storage tank 31 is hinged with a gas cylinder 34, and a third piston 341 is slidably connected in the gas cylinder 34, and the end of the third piston 341 close to the sealing cover 33 is fixedly connected to the pull rod 3 42, one end of the pull rod 342 extending out of the air cylinder 34 is hinged with the sealing cover 33, the outer wall of the pull rod 342 is sleeved with a third elastic member 343, wherein the third elastic member 343 is a spring, one end of the third elastic member 343 is connected to the end of the third piston 341 close to the pull rod 342, the other end of the third elastic member 343 is connected to the air cylinder 34, and the side wall of the end of the air cylinder 34 away from the pull rod 342 is provided with an air inlet hole 344, and the air inlet hole 344 is connected with the air outlet hole 269 through a pipeline.

[0053] On the basis of the above-mentioned embodiment, as the viscosity of the mixed liquid in the mixing tank 21 increases, the rotation speed of the rotating shaft 221 will continue to decrease, and at the same time, the mixed liquid flowing through the tapered hole opened by the resistance disk 236 will gradually decrease. When the flow of the mixed liquid flowing through the tapered hole of the resistance disk 236 is the least, the resistance disk 236 moves toward the stirring rod 222 and drives the sliding block 232 to move through the push rod 235. The sliding block 232 moves and drives the shut-off rod 233 to move toward the inner cavity of the stirring rod 222. The sliding block 232 moves and continuously squeezes the first elastic member 234. When the first elastic member 234 is compressed to the maximum limit, the shut-off rod 233 is completely in contact with the inner wall of the stirring rod 222. The first piston 264 is pressed against the second piston 265 by the pressure relief valve 266, and the second piston 266 is pressed against the pressure relief valve 267. The pressure relief valve 267 is pressed against the pressure relief valve 268, and the pressure relief valve 269 is pressed against the pressure relief valve 269. The pressure relief valve 268 is pressed against the pressure relief valve 269. The pressure relief valve 269 is pressed against the pressure relief valve 268. The pressure relief valve 269 is pressed against the pressure relief valve 269. When the elastic member 267 is compressed to the maximum limit position, the first piston 264 passes over the spray hole 268, so that the flow cross section of the spray hole 268 is maximized, and the high-pressure water flows into the mixing tank 21 through the spray hole 268. At the same time, when the second elastic member 267 is compressed to the maximum limit, the compressed gas in the gas collecting chamber 263 enters the air inlet hole 344 through the pipeline, and the high-pressure gas in the air inlet hole 344 enters the inner cavity of the gas cylinder 34 and continuously squeezes the third piston 341. When the third piston 341 moves, it continuously drives the pull rod 342 to move. When the third piston 341 moves, it continuously squeezes the third elastic member 343. When the third elastic member 343 is compressed to the maximum limit, the compressed gas in the gas collecting chamber 263 enters the air inlet hole 344 through the pipeline. The high-pressure gas in the air inlet hole 344 enters the inner cavity of the gas cylinder 34 and continuously squeezes the third piston 341. When the third piston 341 moves, it continuously drives the pull rod 342 to move. When the third piston 341 moves, it continuously squeezes the third elastic member 343. When in the maximum limit position, the length of the air cylinder 34 extended by the pull rod 342 is the longest. At the same time, the sealing cover 33 at one end of the pull rod 342 is completely separated from the second conveying pipe 324. At the same time, the acute angle formed by the axes of the sealing cover 33 and the second conveying pipe 324 is the largest. At the same time, the material transported to the second conveying pipe 324 by the auger 322 passes through the notch and enters the storage tank 31 again along the sealing cover 33, thereby evenly dispersing the material in the storage tank 31. At the same time, the motor 211 is energized by the control switch, and the rotation of the motor 211 further drives the rotating shaft 221 to rotate, and the mixed liquid in the mixing tank 21 is further mixed by the stirring rod 222.

[0054] To summarize, as the viscosity of the mixed liquid in the mixing tank 21 changes, the cutoff surface of the inner cavity of the stirring rod 222 is adjusted by the cutoff rod 233, and the high-pressure water located in the inner cavity of the rotating shaft 221 enters the inner cavity of the mixing tank 21 through the spray hole 268, so as to dilute the mixed liquid with excessive viscosity in the mixing tank 21, so as to prevent the mixed liquid in the mixing tank 21 from having too high viscosity, causing the liquid to flow slowly in the well wall during fracturing, resulting in increased hydraulic loss and limiting the expansion of cracks; the third elastic member 343 is compressed and relaxed, so that the acute angle formed by the axis of the sealing cover 33 and the second delivery pipe 324 is continuously changed according to the change of the viscosity of the mixed liquid in the mixing tank 21, and the viscosity of the mixed liquid in the mixing tank 21 is adjusted in real time while continuous mixing is performed, and the motor 211 is energized so that the stirring rod 222 further stirs the mixed liquid in the mixing tank 21, so as to prevent the stirring liquid in the mixing tank 21 from being unevenly stirred and stratified.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fully automatic online continuous mixing equipment for powder drag reducing agent, comprising a water storage tank, characterized in that: Also includes: A mixing assembly, the mixing assembly comprising a mixing tank, wherein a stirring element is arranged in the mixing tank; A mixing component, the mixing component comprising a storage tank, a conveying member is arranged in the storage tank, the conveying member is communicated with the inner cavity of the mixing tank, and the mixing component can adjust the viscosity of the liquid in the mixing tank through the mixing component; The stirring member comprises a rotating shaft rotating in the mixing tank, a motor is fixedly connected to the top of the mixing tank, an output end of the motor is fixedly connected to the rotating shaft, a cavity is provided in the rotating shaft, a plurality of stirring rods for stirring the liquid in the mixing tank are evenly arranged circumferentially at the bottom of the rotating shaft, each of the stirring rods has a cavity, the inner cavity of the rotating shaft is connected with the inner cavities of the plurality of stirring rods, one end of the rotating shaft extending out of the bottom of the mixing tank is connected with the water storage tank through a connecting piece and a pipeline, each of the stirring rods has a plurality of water outlets for driving the rotating shaft to rotate, and each of the stirring rods is provided with an adjusting member for intercepting the inner cavity of the stirring rod according to the viscosity of the liquid; Each of the adjusting members comprises a fixed block respectively fixed on the outer wall of each of the stirring rods, each of the fixed blocks is slidably connected with a sliding block, each of the sliding blocks is fixedly connected to a shutoff rod at one end close to the stirring rod, each of the shutoff rods has a hemispherical end extending out of the fixed block, and each of the hemispherical ends of the shutoff rods extends into the corresponding inner cavity of the stirring rod, each of the outer walls of the shutoff rods is sleeved with a first elastic member, one end of each of the first elastic members is connected to an end of the sliding block close to the shutoff rod, and the other end of each of the first elastic members is connected to the corresponding fixed block, each of the sliding blocks is fixedly connected to a push rod at one end away from the shutoff rod, and each of the push rods is fixedly connected to a resistance disk at one end extending out of the fixed block, and each of the resistance disks is evenly provided with a plurality of conical holes; The outer wall of one end of the rotating shaft close to the motor is fixedly connected to the third pulley, the outer wall of one end of the rotating shaft extending out of the bottom of the mixing tank is fixedly connected to the first pulley, the outer wall of one end of the rotating shaft close to the third pulley is fixedly connected to the flow guide, and the end of the rotating shaft close to the third pulley is provided with a flow guide hole, and the flow guide hole is connected to the inner cavity of the rotating shaft; The guide member is provided with an annular groove, which is connected with the guide hole. A guide cavity and a gas collecting cavity are arranged in the guide member. Holes which are respectively connected with the annular groove and the guide cavity are arranged in the guide member. A first piston is slidably connected in the guide cavity. One end of the first piston close to the hole is fixedly connected with a connecting rod. One end of the connecting rod extending into the gas collecting cavity is fixedly connected with a second piston. The outer wall of the connecting rod is sleeved with a second elastic member. One end of the second elastic member is connected to one end of the second piston close to the connecting rod, and the other end of the second elastic member is connected to the inner wall of the gas collecting chamber. A spray hole connected to the gas collecting chamber is provided at the bottom of the flow guide member. When the second elastic member is compressed to the maximum limit position, the first piston moves and passes over the spray hole, and the spray hole is connected to the annular groove through the hole. An outlet hole for discharging gas in the gas collecting chamber is provided on one side of the flow guide member. The conveying member includes a first conveying pipe arranged in the storage tank, an auger is rotatably connected in the first conveying pipe, one end of the auger extending out of the bottom of the storage tank is fixedly connected to a second pulley, a second conveying pipe is fixedly connected to the top side wall of the first conveying pipe, one end of the second conveying pipe extending out of the storage tank is fixedly connected to a third conveying pipe, the third conveying pipe is connected to the inner cavity of the mixing tank, a notch connected to the storage tank is provided at the bottom of the second conveying pipe, a sealing cover for closing the notch is hingedly connected to the outer wall of the second conveying pipe, an air cylinder is hingedly connected to the inner top of the storage tank, and the second pulley is connected to the first pulley through a transmission belt. A third piston is slidably connected in the air cylinder, and one end of the third piston close to the sealing cover is fixedly connected to a pull rod, and one end of the pull rod extending out of the air cylinder is hinged to the sealing cover; A third elastic member is sleeved on the outer wall of the pull rod, one end of the third elastic member is connected to an end of the third piston close to the pull rod, the other end of the third elastic member is connected to the air cylinder, and an air inlet hole is opened on the side wall of the end of the air cylinder away from the pull rod, and the air inlet hole is connected to the air outlet hole through a pipeline.

2. The fully automatic online continuous mixing equipment for powder drag reducer according to claim 1, characterized in that: A sixth pulley is arranged on the top of the third conveying pipe, a rotating rod is fixedly connected to the bottom of the sixth pulley, one end of the rotating rod extending out of the third conveying pipe is fixedly connected to a dispersion disk, the dispersion disk comprises a cone, wherein the inclined surface of the cone is provided with a plurality of evenly distributed diverter rods and diverter plates for dispersion.

3. The fully automatic online continuous mixing equipment for powder drag reducer according to claim 1, characterized in that: A fixing part is provided on the top of the mixing tank, and a transmission shaft is rotatably connected in the fixing part. One end of the transmission shaft extending out of the top of the fixing part is fixedly connected to the fifth pulley, and one end of the transmission shaft extending out of the fixing part and entering the mixing tank is fixedly connected to the fourth pulley. The fourth pulley is connected to the third pulley through a transmission belt, and the fifth pulley is connected to the sixth pulley through a transmission belt.

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