A fracturing dry powder conveying device

Abstract

The invention discloses a fracturing dry powder conveying device, which relates to the technical field of special intelligent packaging equipment. The fracturing dry powder conveying device comprises a screw conveyor, wherein a discharge barrel A is fixedly connected to the top of the screw conveyor, a discharge barrel B is fixedly connected to the top of the discharge barrel A, a bracket is fixedly connected to the right side of the screw conveyor, a motor is fixedly connected to one side of the bracket, a gearbox is fixedly connected to the output end of the motor, one side of the gearbox is fixedly connected to the outer wall of the bracket, a screw blade and a rotating shaft are arranged inside the screw conveyor, the screw blade is fixedly connected to the outer wall of the rotating shaft, the motor is connected to the rotating shaft through the gearbox, and is characterized in that a discharge mechanism is arranged above the discharge barrel B, and the whole elastic net is stretched and then quickly bounced down to avoid as much as possible the problem of circular holes being blocked by dry powder when the dry powder is evenly sprinkled, resulting in a decrease in the dry powder conveying efficiency and uneven dry powder conveying amount.

Description

Technical Field

[0001] The invention relates to the field of petroleum technology, in particular to a fracturing dry powder conveying device. Background Art

[0002] Fracturing powder, i.e. fracturing dry powder drag reducer, is a chemical widely used in oilfield production enhancement operations. It is mainly used to reduce the flow resistance of fracturing fluid during transportation and improve the ability of fracturing fluid to carry proppant. It is mainly used in oil drilling and oilfield fracturing operations to improve the production capacity and production enhancement effect of oil and gas wells.

[0003] An ultrafine dry powder conveying device described in the patent application with publication number CN208897873U includes a powder conveying cylinder, a lifting plate, a fixed bottom plate and a lifting cylinder, wherein the bottom of the powder conveying cylinder is fixedly connected to the lifting plate through a connecting plate, one end of the lifting plate is hinged to the fixed bottom plate, and the other end is connected to the lifting cylinder, the bottom of the lifting cylinder is fixed to the fixed bottom plate, a powder inlet is arranged at the top of the powder conveying cylinder, and a powder outlet is arranged at the bottom of the powder conveying cylinder;

[0004] At present, when the dry powder used for fracturing is conveyed through the thread, if a large amount of dry powder is poured into the feed port above at one time and all enters the thread conveyor, the amount of dry powder at different positions will be different when the thread conveyor is conveying. After the thread conveyor transports the dry powder to the designated position, the feeding speed and amount of the dry powder will be different, and the accurate automatic dry powder bagging work cannot be completed through the assembly line. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a fracturing dry powder conveying device to achieve the purpose of solving the above-mentioned problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fracturing dry powder conveying device, including a screw conveyor, a feed barrel A is fixedly connected to the top of the screw conveyor, a feed barrel B is fixedly connected to the top of the feed barrel A, a bracket is fixedly connected to the right side of the screw conveyor, a motor is fixedly connected to one side of the bracket, a gearbox is fixedly connected to the output end of the motor, one side of the gearbox is fixedly connected to the outer wall of the bracket, a screw blade and a rotating shaft are arranged inside the screw conveyor, the screw blade is fixedly connected to the outer wall of the rotating shaft, the motor is connected to the rotating shaft through the gearbox, and a feed mechanism is arranged above the feed barrel B;

[0007] The unloading mechanism comprises:

[0008] A material storage barrel, which is a hollow cylindrical structure. The lower part of the inner wall of the material storage barrel is fixedly connected to the outer wall of the lower material barrel B. The inner wall of the material storage barrel is fixedly connected to an inner fixing ring. The inner wall of the inner fixing ring is fixedly connected to a limiting rod. One end of the limiting rod is fixedly connected to a fixing sleeve. The material storage barrel is used to fill dry powder;

[0009] The lifting block is a quarter-spherical structure, the bottom of the lifting block is in contact with the top of the rotating shaft, the right side of the lifting block is an arc-shaped surface and in contact with the outer wall of the threaded blade, and the top of the lifting block is fixedly connected with a lifting shaft. The lifting block is used to be pushed to rise when the threaded blade rotates.

[0010] Preferably, a lifting shaft is fixedly connected to the top of the lifting block, a fixed block is fixedly connected to the top of the lifting shaft, the fixed block is a circular columnar structure, a fixing ring is fixedly connected to the outer wall of the fixed block, a sliding ring is in contact with the bottom of the fixing ring, and the fixing ring and the sliding ring have magnetism on the opposite side and opposite poles attract each other.

[0011] Preferably, the inner wall of the sliding ring is slidably connected to the outer wall of the fixed block, a sliding sleeve is fixedly connected to the bottom of the sliding ring, and the inner wall of the sliding sleeve does not contact the outer wall of the fixed block.

[0012] Preferably, the outer wall of the sliding sleeve is slidably connected to the inner wall of the fixed sleeve, a spring is fixedly connected to the bottom of the sliding sleeve, the bottom end of the spring is fixedly connected to the bottom of the inner wall of the fixed sleeve, and the inner wall of the fixed sleeve is slidably connected to the outer wall of the fixed block.

[0013] Preferably, a retaining ring is fixedly connected to the outer wall of the fixed sleeve, an elastic net is fixedly connected to the outer wall of the sliding ring, a circular hole is opened on the inner wall of the elastic net, an elastic plate is fixedly connected to the surface of the elastic net above the circular hole, the elastic plate is elastic and is inclined, an inclined block is fixedly connected to the top of the elastic plate, and another inclined block is fixedly connected to the top of the inclined block via a connecting shaft.

[0014] Preferably, the outer wall of the sliding ring is provided with a deformation mechanism, and the deformation mechanism includes a rotating ball A, the outer wall of the rotating ball A is rotatably connected to the outer wall of the sliding ring, the outer wall of the rotating ball A is rotatably connected to a rotating disk A, and the outer wall of the rotating disk A is fixedly connected to a square plate A.

[0015] Preferably, the outer wall of the square plate A is slidably connected to a sliding sleeve plate, the inner wall of the sliding sleeve plate is slidably connected to a square plate B, one end of the square plate B is fixedly connected to a turntable B, the outer wall of the turntable B is rotatably connected to a rotating ball B, the outer wall of the rotating ball B is rotatably connected to the inner wall of the inner fixed ring, and the outer wall of the sliding sleeve plate is fixedly connected to a counterweight block.

[0016] Preferably, an arc-shaped groove is provided on the inner wall of the turntable B, an arc-shaped telescopic rod is fixedly connected to the inner wall of the arc-shaped groove, a one-way valve B and a one-way valve A are provided on the outer wall of the arc-shaped telescopic rod, the outer wall of the rotating ball B is fixedly connected to the limiting shaft, and one end of the arc-shaped telescopic rod is fixedly connected to the outer wall of the limiting shaft.

[0017] The present invention provides a fracturing dry powder conveying device, which has the following beneficial effects:

[0018] 1. The present invention provides a feeding mechanism to generate impact vibration and emergency stop, and utilizes the vibration and the downward inertia of the elastic net when the emergency stop is continued to push down quickly to push down the dry powder blocks that are blocked and squeezed by each other in the circular holes of the elastic net due to partial moisture, and utilizes the vibration to break them up, and the elastic net is shaken with the inertia of the elastic net when the emergency stop is continued to move downward and the elastic force of the elastic net itself, so that the elastic force of the elastic net is shaken up and down, and the whole elastic net is stretched and then bounced down quickly, so as to avoid as much as possible the circular holes being blocked by dry powder when the dry powder is evenly sprinkled, resulting in a decrease in the dry powder conveying efficiency and uneven dry powder conveying amount.

[0019] 2. The present invention provides a feeding mechanism so that a large amount of dry powder that needs to be poured can be poured onto the elastic net at one time. Then, with the shaking of the elastic net and the falling of the round hole, a uniform and controllable amount of dry powder can be dropped. There is no need to use a conveyor to keep a fixed amount of dry powder continuously fed in. It also avoids the situation that the dry powder is continuously fed into the screw conveyor by another conveyor, and the subsequent dry powder amount changes with the continuous injection of the dry powder, resulting in different dry powder flow rates at the beginning and the subsequent injection into the screw conveyor, and the uneven amount of dry powder transported by the screw conveyor leads to the uniform stability of the subsequent assembly line for dry powder bagging.

[0020] 3. The present invention sets a feeding mechanism to realize that each time the elastic net is stretched, it bounces down, and a large amount of dry powder is evenly bounced down through several round holes. While the elastic net is constantly shaking to prevent the round holes from being blocked, the inclined block can be used to wrap and push down, so that the dry powder above the elastic net can be evenly fed to the threaded blades by this process, so that the amount of dry powder accumulated in the threaded blades is kept uniform each time, thereby improving the uniformity and stability of transportation;

[0021] 4. The present invention provides a feeding mechanism, and the inverted teeth of the inclined block can clamp and wrap the dry powder, so that in the process of the elastic net being lowered, there will be no problem of a gap between the dry powder above the lifting shaft and the lifting shaft. When the elastic net stops suddenly, the dry powder or agglomerated dry powder blocks wrapped by the inclined block will be squeezed into the lifting shaft by inertia, and the dry powder blocks once blocked in the lifting shaft will be flushed away, thereby further avoiding the problem of blockage in the lifting shaft.

[0022] 5. The present invention provides a feeding mechanism. Since the elastic plate is elastic and is in a curved shape inclined toward the center of the lifting shaft, when the elastic net stops suddenly, the elastic plate will bring the inclined block and the connecting shaft to bend and descend toward the center of the lifting shaft due to inertia, thereby fully squeezing the dry powder into the lifting shaft, thereby increasing the squeezing force on the dry powder blocks blocked inside the lifting shaft.

[0023] 6. The present invention sets up a material discharge mechanism, and only needs to adjust the conveying speed separately to automatically match it with the corresponding proportional material discharge amount. The integrated work process makes it easy to operate and improves work efficiency. The material discharge and anti-blocking are integrated, so that when the material is discharged quickly, the anti-blocking effect is further improved and the working movement is kept stable.

[0024] 7. The present invention sets a deformation mechanism, and the turntable B rotates on the rotating ball B, so that the arc-shaped telescopic rod in the arc-shaped groove on the inner wall of the turntable B is compressed and contracted, and the built-in spring on the inner wall of the arc-shaped telescopic rod is squeezed to deform it, so that under the elastic force of the built-in spring inside the arc-shaped telescopic rod, the square plate A, the sliding plate, and the square plate B will rotate rapidly and be pulled back by the elastic force of the built-in spring when the sliding ring pops up downward. The dry powder accumulated on the elastic net is moved back and forth by the rapid rotation, and the dry powder blocks in the dry powder are fully broken up by the lateral movement of several sliding plates.

[0025] 8. The present invention sets a deformation mechanism, so that when the speed of the threaded blades transporting dry powder is slow, a large amount of dry powder can be contacted and moved. However, when the rotating shaft drives the threaded blades to rotate faster and transport dry powder faster, the sliding plate will continuously maintain a high-frequency and low-amplitude back-and-forth rotation, and make the sliding plate, square plate A, and square plate B nearly vertical. At this time, the dry powder transportation efficiency is high, and the speed of the dry powder passing through the circular hole needs to be faster. Therefore, the vertical state of the sliding plate, square plate A, and square plate B is used to reduce the resistance to the falling of the dry powder, and the high-frequency and low-amplitude rotation and shaking of the nearly vertical square plate A, sliding plate, and square plate B is used to further increase the falling rate of the surrounding dry powder, thereby reducing the problem of mutual squeezing, agglomeration, and accumulation that cannot fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 The structure diagram of the material feeding mechanism of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 3 The structure diagram of the material feeding mechanism of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 4The structure diagram of the material feeding mechanism of the present invention is shown in FIG. Figure 3 ;

[0030] Figure 5 The cross-sectional structure of the blanking mechanism of the present invention is shown in FIG. Figure 1 ;

[0031] Figure 6 The structure diagram of the material feeding mechanism of the present invention is shown in FIG. Figure 4 ;

[0032] Figure 7 The cross-sectional structure of the blanking mechanism of the present invention is shown in FIG. Figure 2 ;

[0033] Figure 8 It is a schematic diagram of the disassembled structure of the blanking mechanism of the present invention;

[0034] Fig. 9 For the present invention Figure 3 A magnified image of point A;

[0035] Fig.10 The structure diagram of the material feeding mechanism of the present invention is shown in FIG. Figure 5 ;

[0036] Fig.11 The structure diagram of the material feeding mechanism of the present invention is shown in FIG. Figure 6 ;

[0037] Fig.12 The motion state of the material feeding mechanism of the present invention is Figure 1 ;

[0038] Fig.13 The motion state of the material feeding mechanism of the present invention is Figure 2 ;

[0039] Fig.14 The motion state of the material feeding mechanism of the present invention is Figure 3 ;

[0040] Fig.15 It is a structural schematic diagram of the deformation mechanism of the present invention;

[0041] Fig.16 The motion state of the deformation mechanism of the present invention is Figure 1 ;

[0042] Fig.17 The motion state of the deformation mechanism of the present invention is Figure 2 ;

[0043] Fig.18 For the present invention Fig.16 Enlarged view of point B.

[0044] In the figure: 1 screw conveyor, 2 motor, 3 feeding mechanism, 301 storage barrel, 302 lifting block, 303 lifting shaft, 304 fixed block, 305 fixed ring, 306 sliding ring, 307 sliding sleeve, 308 fixed sleeve, 309 spring, 310 retaining ring, 311 limiting rod, 312 elastic net, 313 round hole, 314 elastic plate, 315 inclined block, 316 connecting shaft, 317 inner fixed ring, 4 deformation mechanism, 401 rotating ball A, 402 turntable A, 403 square plate A, 404 sliding sleeve plate, 405 square plate B, 406 turntable B, 407 rotating ball B, 408 counterweight, 409 arc groove, 410 arc telescopic rod, 411 check valve A, 412 check valve B, 414 limiting shaft, 5 gearbox, 6 threaded blade, 7 rotating shaft, 8 bracket, 9 feeding barrel A, 10 feeding barrel B. DETAILED DESCRIPTION

[0045] Example 1: Please refer to Figure 1-4 The present invention provides a technical solution: a fracturing dry powder conveying device, comprising a screw conveyor 1, a feed barrel A9 is fixedly connected above the screw conveyor 1, a feed barrel B10 is fixedly connected to the top of the feed barrel A9, a bracket 8 is fixedly connected to the right side of the screw conveyor 1, a motor 2 is fixedly connected to one side of the bracket 8, a gearbox 5 is fixedly connected to the output end of the motor 2, one side of the gearbox 5 is fixedly connected to the outer wall of the bracket 8, a screw blade 6 and a rotating shaft 7 are arranged inside the screw conveyor 1, the screw blade 6 is fixedly connected to the outer wall of the rotating shaft 7, the motor 2 is connected to the rotating shaft 7 through the gearbox 5, and a feed mechanism 3 is arranged above the feed barrel B10;

[0046] The unloading mechanism 3 comprises:

[0047] The storage barrel 301 is a hollow cylindrical structure. The lower part of the inner wall of the storage barrel 301 is fixedly connected to the outer wall of the lower barrel B10. The inner wall of the storage barrel 301 is fixedly connected to an inner fixing ring 317. The inner wall of the inner fixing ring 317 is fixedly connected to a limiting rod 311. One end of the limiting rod 311 is fixedly connected to a fixing sleeve 308. The storage barrel 301 is used to load dry powder.

[0048] The lifting block 302 is a quarter-spherical structure. The bottom of the lifting block 302 contacts the top of the rotating shaft 7. The right side of the lifting block 302 is an arc-shaped surface and contacts the outer wall of the threaded blade 6. The top of the lifting block 302 is fixedly connected with a lifting shaft 303. The lifting block 302 is used to be pushed to rise when the threaded blade 6 rotates.

[0049] When in use, the dry powder for fracturing is connected to the top of the storage barrel 301 through the connecting pipe, and then a large amount of dry powder is slowly put into the storage barrel 301, and the dry powder falls evenly onto the threaded blades 6 below through the elastic net 312 in the elastic net 312, and then the motor 2 is started to control the rotation of the shaft 7 through the gearbox 5 to drive the threaded blades 6 to rotate, so that the dry powder that constantly and evenly falls on the threaded blades 6 is transported away through the threaded conveying, completing the conveying work of the dry powder;

[0050] Example 2: Please refer to Figure 1-14 On the basis of the first embodiment, the present invention provides a technical solution: a lifting shaft 303 is fixedly connected to the top of the lifting block 302, a fixed block 304 is fixedly connected to the top of the lifting shaft 303, the fixed block 304 is a circular columnar structure, a fixed ring 305 is fixedly connected to the outer wall of the fixed block 304, a sliding ring 306 is in contact with the bottom of the fixed ring 305, and the opposite side of the fixed ring 305 and the sliding ring 306 have magnetism and opposite poles attract each other.

[0051] The inner wall of the sliding ring 306 is slidably connected to the outer wall of the fixed block 304 , and a sliding sleeve 307 is fixedly connected to the bottom of the sliding ring 306 , and the inner wall of the sliding sleeve 307 does not contact the outer wall of the fixed block 304 .

[0052] The outer wall of the sliding sleeve 307 is slidably connected to the inner wall of the fixed sleeve 308. A spring 309 is fixedly connected to the bottom of the sliding sleeve 307. The bottom end of the spring 309 is fixedly connected to the bottom of the inner wall of the fixed sleeve 308. The inner wall of the fixed sleeve 308 is slidably connected to the outer wall of the fixed block 304.

[0053] A retaining ring 310 is fixedly connected to the outer wall of the fixed sleeve 308, an elastic net 312 is fixedly connected to the outer wall of the sliding ring 306, a circular hole 313 is opened on the inner wall of the elastic net 312, an elastic plate 314 is fixedly connected to the surface of the elastic net 312 above the circular hole 313, the elastic plate 314 is elastic and is inclined, an inclined block 315 is fixedly connected to the top of the elastic plate 314, and another inclined block 315 is fixedly connected to the top of the inclined block 315 through a connecting shaft 316.

[0054] When the dry powder is slowly put into the elastic net 312 in the storage barrel 301 and falls through the circular hole 313, during this process, since the rotating shaft 7 controls the continuous rotation of the threaded blade 6, the threaded blade 6 will start to contact the right side of the lifting block 302 through the thread shape of the outer wall and push to the left, so that when the lifting block 302 is an arc surface on the right side, it will be subjected to a lateral thrust. Because the lifting shaft 303 is vertically limited by the fixing sleeve 308 and the limiting rod 311, the lifting block 302 pushes the lifting shaft 303 to start vertically rising;

[0055] When the lifting shaft 303 rises vertically, it pushes the fixed block 304 and the fixed ring 305 to rise synchronously. When the fixed ring 305 rises, the magnetic attraction between the fixed ring 305 and the sliding ring 306 will cause the sliding ring 306 and the sliding sleeve 307 to rise together. When the sliding sleeve 307 rises, it will pull the spring 309 on the inner wall of the fixed sleeve 308, so that the spring 309 is stretched and deformed. At the same time, the elastic net 312 on the outer wall of the sliding ring 306 is also stretched and deformed and tightened. The flat elastic net 312 becomes a truncated cone with a high middle and low sides. Until the lifting block 302 is pushed to the top by the rotation of the threaded blade 6 and drives the fixed block 304 and the fixed ring 305 to move to the highest point, at this time, the magnetic attraction between the fixed ring 305 and the sliding ring 306 cannot overcome the sum of the elastic forces of the elastic net 312 and the spring 309, so that the sliding sleeve 307 and the sliding ring 306 is pulled by the elastic force of the elastic net 312 and the spring 309 so that the sliding ring 306 is separated from the magnetic attraction of the fixed ring 305, and quickly descends so that the sliding ring 306 collides with the retaining ring 310, generating vibration of impact and stopping suddenly. By utilizing the vibration and the inertia of the elastic net 312 to continue to move downward when stopping suddenly, the dry powder blocks that are blocked and squeezed into each other in the circular holes 313 of the elastic net 312 due to partial moisture are quickly pushed downward and broken by the vibration. With the inertia of the elastic net 312 to continue to move downward when stopping suddenly and the elastic force of the elastic net 312 itself, the elastic force of the elastic net 312 shakes up and down, and the entire elastic net 312 is stretched and then bounced down quickly, so as to avoid as much as possible the circular holes 313 being blocked by dry powder when the dry powder is evenly sprinkled, resulting in a decrease in the conveying efficiency of the dry powder and the occurrence of uneven dry powder conveying amount.

[0056] As the elastic net 312 is pulled up and then quickly brought down by the sliding ring 306, since each circular hole 313 is provided with an elastic plate 314, an inclined block 315, and a connecting shaft 316, when the elastic net 312 falls, the dry powder above the circular hole 313 is wrapped by several inclined blocks 315, and since one side of the inclined block 315 is inverted tooth shape, the dry powder will naturally enter between each elastic plate 314 and the inclined block 315 with gravity, and once agglomerates in and on the circular hole 313, when the elastic net 312 quickly bounces down, the inverted teeth of the inclined block 315 will separate the dry powder in the center from the dry powder block. The dry powder and dry powder blocks wrapped by the inclined block 315 are quickly pushed down with the inertia of the sudden stop of the sliding ring 306, and quickly fall down through the circular holes 313, so that each time the elastic net 312 is stretched and then bounced down, a large amount of dry powder is evenly bounced down through several circular holes 313. While the elastic net 312 is constantly shaking to prevent the circular holes 313 from being blocked, the inclined block 315 can also be used to push down the wrapping, so that the dry powder above the elastic net 312 can be evenly fed to the threaded blade 6 by this process, so that the amount of dry powder accumulated in the threaded blade 6 is kept uniform each time, and the uniformity and stability of transportation are improved;

[0057] Since the inverted teeth of the inclined block 315 can clamp and wrap the dry powder, there will be no gap between the dry powder above the lifting shaft 303 and the lifting shaft 303 during the downward movement of the elastic net 312. When the elastic net 312 stops suddenly, the dry powder or agglomerated dry powder blocks wrapped by the inclined block 315 will be squeezed into the lifting shaft 303 by inertia, and the dry powder blocks once blocked in the lifting shaft 303 will be flushed away, thereby further avoiding the blockage problem in the lifting shaft 303.

[0058] Since the elastic plate 314 is elastic and is in a curved shape inclined toward the center of the lifting shaft 303, when the elastic net 312 stops suddenly, the elastic plate 314 will bring the inclined block 315 and the connecting shaft 316 to bend and descend toward the center of the lifting shaft 303 due to inertia, thereby fully squeezing the dry powder into the lifting shaft 303, thereby increasing the squeezing force on the dry powder blocks blocked inside the lifting shaft 303;

[0059] When the threaded blade 6 is driven by the rotating shaft 7 to rotate and transport, the elastic net 312 bounces down, and the inclined block 315 wraps the dry powder in a large amount and pushes it down through the lifting shaft 303 to discharge the dry powder. Because the frequency of the elastic net 312 bouncing down is related to the rotation frequency of the threaded blade 6, when the dry powder transportation efficiency needs to be improved, it is only necessary to increase the rotation speed of the threaded blade 6 driven by the rotating shaft 7 to increase the frequency of pushing the lifting block 302, so that the lifting block 302 is constantly pushed up by the threaded blade 6, and then falls from the right side of the threaded blade 6 with gravity, driving the elastic net 312 to perform a higher frequency of rising and bouncing down work, and using each time the elastic net 312 bounces down, the dry powder is uniformly discharged in batches. Since the conveying speed is proportional to the discharge amount, this method can adjust the conveying speed separately, and automatically match it with the corresponding proportional discharge amount. The integrated workflow makes it easy to operate and improves work efficiency. The discharge and anti-blocking are integrated, so that when the discharge is fast, the anti-blocking effect is further improved and the working movement is kept stable.

[0060] Example 3: Please refer to Figure 1-18 On the basis of the first and second embodiments, the present invention provides a technical solution: a deformation mechanism 4 is arranged on the outer wall of the sliding ring 306, the deformation mechanism 4 comprises a rotating ball A401, the outer wall of the rotating ball A401 is rotatably connected to the outer wall of the sliding ring 306, the outer wall of the rotating ball A401 is rotatably connected to a rotating disk A402, and the outer wall of the rotating disk A402 is fixedly connected to a square plate A403.

[0061] The outer wall of square plate A403 is slidably connected to a sliding plate 404, the inner wall of sliding plate 404 is slidably connected to a square plate B405, one end of square plate B405 is fixedly connected to a turntable B406, the outer wall of turntable B406 is rotatably connected to a rotating ball B407, the outer wall of rotating ball B407 is rotatably connected to the inner wall of inner fixed ring 317, and the outer wall of sliding plate 404 is fixedly connected to a counterweight block 408.

[0062] An arc-shaped groove 409 is provided on the inner wall of the turntable B406, and an arc-shaped telescopic rod 410 is fixedly connected to the inner wall of the arc-shaped groove 409. A one-way valve B412 and a one-way valve A411 are provided on the outer wall of the arc-shaped telescopic rod 410. A limit shaft 414 is fixedly connected to the outer wall of the rotating ball B407, and one end of the arc-shaped telescopic rod 410 is fixedly connected to the outer wall of the limit shaft 414.

[0063] When the sliding ring 306 is separated from the magnetic attraction of the fixed ring 305 and the sliding ring 306 is pulled down quickly by the elastic force of the spring 309, the sliding ring 306 drives the rotating disk A402, the square plate A403, the sliding sleeve plate 404 and the square plate B405 to descend through the rotating ball A401. As the rotating ball A401 gradually moves away from the rotating ball B407, the square plate A403 and the square plate B405 begin to slide away from the inner wall of the sliding sleeve plate 404 and extend and retract. The angles of the square plates A403 and B405 are rotated by the hinge connection between the rotating ball B407 and the rotating ball A401.

[0064] The rotating ball B407 and the rotating ball A401 can only rotate up and down, but cannot rotate left and right;

[0065] The dry powder falling from above is separated by the square plate A403, the sliding plate 404 and the square plate B405, so that the dry powder falling on the elastic net 312 will pass through the square plate A403, the sliding plate 404 and the square plate B405 and be separated and scattered by them, breaking up the dry powder blocks falling from the high altitude to avoid the problem of dry powder agglomeration and blocking the lifting shaft 303. Moreover, with each fall and emergency stop of the sliding ring 306, the square plate A403, the sliding plate 404 and the square plate B405 will fall and stop synchronously. Since the counterweight block 408 is fixed at the oblique side of the sliding plate 404, when the sliding plate 404 stops suddenly, one side of the sliding plate 404 is counterweighted by the counterweight block 408. Inertia will drive the sliding plate 404, the square plate B405, and the square plate A403 to rotate, and the rotating disc B406 will rotate on the rotating ball B407, driving the arc-shaped telescopic rod 410 in the arc-shaped groove 409 on the inner wall of the rotating disc B406 to be compressed and contracted, and squeezing the built-in spring on the inner wall of the arc-shaped telescopic rod 410 to deform it, so that under the elastic force of the built-in spring inside the arc-shaped telescopic rod 410, the square plate A403, the sliding plate 404, and the square plate B405 will rotate rapidly and be pulled back by the elastic force of the built-in spring when the sliding ring 306 pops up downward, and the dry powder accumulated on the elastic net 312 is moved back and forth by their rapid rotation, and the dry powder blocks in the dry powder are fully dispersed by the horizontal movement of several sliding plates 404;

[0066] When the rotating shaft 7 is driven to rotate at a faster speed, the frequency of the sliding ring 306 rising and falling is increased, so that the frequency of the square plate A403, the sliding plate 404, and the square plate B405 being driven to rise and fall and rotate is also increased. Whenever the sliding plate 404 is driven to rotate by the inertia of the counterweight block 408, the arc-shaped telescopic rod 410 will contract and expand. When the arc-shaped telescopic rod 410 contracts, the air inside the arc-shaped telescopic rod 410 is discharged through the one-way valve A411. When the arc-shaped telescopic rod 410 is pushed back and lengthened by the built-in spring on the inner wall, the air enters the arc-shaped telescopic rod 410 through the one-way valve B412. , both the one-way valve A411 and the one-way valve B412 can only take in air in one direction, and the diameter of the one-way valve B412 is much smaller than that of the one-way valve A411. Therefore, when the sliding plate 404 rotates from the inclined state to the vertical state, the arc-shaped telescopic rod 410 is compressed, and the air is quickly discharged through the one-way valve A411 with a larger diameter without resistance. When the built-in spring retracts the arc-shaped telescopic rod 410, the air can only enter through the one-way valve B412 with a smaller diameter, and the air intake is limited, so that the arc-shaped telescopic rod 410 is reset slowly. Once the interval time between each up and down movement of the sliding plate 404 is less than that of the sliding plate 404, the arc-shaped telescopic rod 410 is reset slowly. When the sliding plate 404 is subjected to the vibration of continuous up and down movement, the sliding plate 404 will rotate again with the inertia of the counterweight block 408 before it returns to its original position, so that when the speed of the threaded blade 6 transporting dry powder is slow, the sliding plate 404 can keep rotating normally to continuously reciprocate and disperse the dry powder accumulated on the elastic net 312, and keep its tilted state so that it can contact and stir with a large amount of dry powder. However, when the rotating shaft 7 drives the threaded blade 6 to rotate faster and transports the dry powder faster, the sliding plate 404 will not The high-frequency and low-amplitude back-and-forth rotation is continuously maintained, and the sliding plate 404, the square plate A403, and the square plate B405 are kept in a nearly vertical state. At this time, the dry powder transportation efficiency is high, and the speed of the dry powder passing through the circular hole 313 needs to be faster. Therefore, the vertical state of the sliding plate 404, the square plate A403, and the square plate B405 is used to reduce the resistance to the falling of the dry powder, and the high-frequency and low-amplitude rotation and shaking of the nearly vertical square plate A403, the sliding plate 404, and the square plate B405 are used to further increase the falling rate of the surrounding dry powder, thereby reducing the problem of mutual squeezing, agglomeration, and accumulation that prevents the dry powder from falling.

[0067] 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 fracturing dry powder conveying device, comprising a screw conveyor (1), wherein a lower material barrel A (9) is fixedly connected to the top of the screw conveyor (1), a lower material barrel B (10) is fixedly connected to the top of the lower material barrel A (9), a bracket (8) is fixedly connected to the right side of the screw conveyor (1), a motor (2) is fixedly connected to one side of the bracket (8), a gearbox (5) is fixedly connected to the output end of the motor (2), one side of the gearbox (5) is fixedly connected to the outer wall of the bracket (8), a screw blade (6) and a rotating shaft (7) are arranged inside the screw conveyor (1), the screw blade (6) is fixedly connected to the outer wall of the rotating shaft (7), the motor (2) is connected to the rotating shaft (7) through the gearbox (5), and the characteristics are: A material discharge mechanism (3) is provided above the material discharge barrel B (10); The unloading mechanism (3) comprises: A material storage barrel (301), the material storage barrel (301) is a hollow cylindrical structure, the lower part of the inner wall of the material storage barrel (301) is fixedly connected to the outer wall of the lower material barrel B (10), the inner wall of the material storage barrel (301) is fixedly connected to an inner fixing ring (317), the inner wall of the inner fixing ring (317) is fixedly connected to a limiting rod (311), one end of the limiting rod (311) is fixedly connected to a fixing sleeve (308), and the material storage barrel (301) is used to load dry powder; A lifting block (302), the lifting block (302) being a quarter spherical structure, the bottom of the lifting block (302) being in contact with the top of the rotating shaft (7), the right side of the lifting block (302) being an arc-shaped surface and in contact with the outer wall of the threaded blade (6), the top of the lifting block (302) being fixedly connected with a lifting shaft (303), the lifting block (302) being used to be pushed to rise when the threaded blade (6) rotates; The top of the lifting shaft (303) is fixedly connected to a fixed block (304), the fixed block (304) is a circular columnar structure, the outer wall of the fixed block (304) is fixedly connected to a fixed ring (305), the bottom of the fixed ring (305) is in contact with a sliding ring (306), and the opposite sides of the fixed ring (305) and the sliding ring (306) have magnetic properties of opposite poles attracting each other; A sliding sleeve (307) is fixedly connected to the bottom of the sliding ring (306); The outer wall of the sliding sleeve (307) is slidably connected to the inner wall of the fixed sleeve (308); a spring (309) is fixedly connected to the bottom of the sliding sleeve (307); and the bottom end of the spring (309) is fixedly connected to the bottom of the inner wall of the fixed sleeve (308); A retaining ring (310) is fixedly connected to the outer wall of the fixed sleeve (308), and an elastic net (312) is fixedly connected to the outer wall of the sliding ring (306).

2. A fracturing dry powder conveying device according to claim 1, characterized in that: The inner wall of the sliding ring (306) is slidably connected to the outer wall of the fixed block (304), and the inner wall of the sliding sleeve (307) is not in contact with the outer wall of the fixed block (304).

3. A fracturing dry powder conveying device according to claim 2, characterized in that: The inner wall of the fixing sleeve (308) is slidably connected to the outer wall of the fixing block (304).

4. A fracturing dry powder conveying device according to claim 3, characterized in that: A circular hole (313) is formed on the inner wall of the elastic net (312); an elastic plate (314) is fixedly connected to the surface of the elastic net (312) above the circular hole (313); the elastic plate (314) is elastic and is arranged to be inclined; an inclined block (315) is fixedly connected to the top of the elastic plate (314); and a plurality of inclined blocks (315) are fixedly connected to the top of the inclined block (315) via a connecting shaft (316).

5. A fracturing dry powder conveying device according to claim 4, characterized in that: The outer wall of the sliding ring (306) is provided with a deformation mechanism (4), the deformation mechanism (4) comprising a rotating ball A (401), the outer wall of the rotating ball A (401) being rotatably connected to the outer wall of the sliding ring (306), the outer wall of the rotating ball A (401) being rotatably connected to a rotating disk A (402), and the outer wall of the rotating disk A (402) being fixedly connected to a square plate A (403).

6. A fracturing dry powder conveying device according to claim 5, characterized in that: The outer wall of the square plate A (403) is slidably connected to a sliding sleeve plate (404), the inner wall of the sliding sleeve plate (404) is slidably connected to a square plate B (405), one end of the square plate B (405) is fixedly connected to a rotating disk B (406), the outer wall of the rotating disk B (406) is rotatably connected to a rotating ball B (407), the outer wall of the rotating ball B (407) is rotatably connected to the inner wall of the inner fixed ring (317), and the outer wall of the sliding sleeve plate (404) is fixedly connected to a counterweight block (408).

7. A fracturing dry powder conveying device according to claim 6, characterized in that: The inner wall of the rotating disk B (406) is provided with an arc-shaped groove (409), the inner wall of the arc-shaped groove (409) is fixedly connected with an arc-shaped telescopic rod (410), the outer wall of the arc-shaped telescopic rod (410) is provided with a one-way valve B (412) and a one-way valve A (411), the outer wall of the rotating ball B (407) is fixedly connected with a limit shaft (414), and one end of the arc-shaped telescopic rod (410) is fixedly connected to the outer wall of the limit shaft (414).

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