Skid-mounted apparatus for online preparation of dry powder drag reducing agent

Abstract

A skid-mounted apparatus for online preparation of a dry powder drag reducing agent, comprising a storage bin (1), wherein the storage bin is provided with a feeding device, the feeding device comprises a feeding bin (4) in communication with the storage bin, the feeding bin is provided with a feeding port (6), the feeding bin is further provided with a bag discharging bin (7), and the bag discharging bin is provided with a bag discharging structure (8); a rotating bin (15) is intermittently and rotatably connected to the feeding bin, a plurality of partition plates (11) are uniformly distributed along the circumference of the rotating bin, a cutting shaft rotatably connected to the rotating bin are provided between adjacent partition plates, and the cutting shaft is provided with a plurality of inner cutting blades (10); outer cutting blades (13) corresponding to the inner cutting blades are fixedly connected to an inner wall of the feeding bin, and the outer cutting blades are arranged on the inner wall of the feeding bin away from the bag discharging bin; and a pair of push plates (12) rotating in opposite directions are rotatably connected to each of the plurality of cutting shafts. The skid-mounted apparatus can automatically break, feed and collect drag reducing agent packaging bags.

Description

A skid-mounted equipment for online preparation of dry powder drag reducing agent Technical Field

[0001] This invention belongs to the technical field of dry powder drag-reducing agent preparation equipment, specifically relating to a skid-mounted equipment for online preparation of dry powder drag-reducing agents. Background Technology

[0002] Dry powder drag reducer for fracturing reduces the turbulence of fluid on the rough surface of the pipeline inner wall by arranging the molecules, thereby reducing intramolecular motion resistance. This product has good drag reduction effect and rapid swelling performance. It can be directly mixed and continuously applied, reducing hydraulic horsepower loss. Under the same construction conditions, it can increase the discharge rate and reduce the construction pressure, making it suitable for large-scale, continuous mixing and volume fracturing.

[0003] The skid-mounted equipment for online preparation of dry powder drag reducers is mainly used for online mixing of polymer solution drag reducers in oil and gas field fracturing projects. It can quickly prepare high-quality polymer solutions without fisheyes or lumps, and efficiently provide supporting services for fracturing projects.

[0004] When preparing dry powder drag-reducing agents, the drag-reducing agents are first added to a storage silo for preservation. The drag-reducing agents in the storage silo are then evenly flowed into a solid-liquid jet injector to mix with water; alternatively, the dry powder and water are dispersed and mixed by jetting using the Venturi tube principle, thus achieving dispersion and dissolution of the drag-reducing agents. During the process of adding drag-reducing agents to the storage silo, since the drag-reducing agents are mostly stored in packaged bags, a series of operations such as breaking the bags, adding the agent, and collecting the packaged bags are required during the addition process. These operations are mostly manual, which undoubtedly brings a high labor intensity to the staff. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the present invention provides an online skid-mounted device for automatically disassembling, feeding, and collecting dry powder drag-reducing agent packaging bags.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an online skid-mounted device for preparing dry powder drag-reducing agents, comprising a storage silo with a feeding device on it; the feeding device includes a feeding chamber connected to the storage silo, the feeding chamber having a feeding port; the feeding chamber also has a bag-discharging chamber with a bag-discharging structure; a rotating chamber is intermittently rotatably connected to the feeding chamber, the rotating chamber having multiple partition plates evenly distributed along its circumference; a cutting shaft rotatably connected to the rotating chamber is provided between adjacent partition plates, the cutting shaft having multiple inner cutting blades; an outer cutting blade corresponding to the inner cutting blade is fixed to the inner wall of the feeding chamber, the outer cutting blade being located on the inner wall of the feeding chamber away from the bag-discharging chamber; a pair of push plates with opposite rotation directions are rotatably connected to the multiple cutting shafts, the pair of push plates reciprocating along the cutting shaft as the cutting shaft rotates and squeezing the drag-reducing agent packaging bag.

[0007] Furthermore, an intermittent motor is fixedly connected to the feeding hopper, and a lever is fixedly connected to the output end of the intermittent motor. A grooved wheel corresponding to the lever is coaxially fixedly connected to the rotating hopper. A limit plate is coaxially fixedly connected to the lever, and a limit groove corresponding to the limit plate is provided on the grooved wheel.

[0008] Furthermore, a drive motor is fixedly connected to the feeding hopper, and a drive wheel is fixedly connected to the output end of the drive motor. An external gear ring that meshes with the drive wheel is rotatably connected to the feeding hopper. A synchronous gear ring is rotatably connected inside the rotating chamber. Multiple cutting shafts are coaxially fixedly connected to cutting wheels that mesh with the synchronous gear ring. An internal gear ring is coaxially fixedly connected to the external gear ring, and a drive wheel that is coaxially fixedly connected to one of the cutting wheels meshes on the internal gear ring.

[0009] Furthermore, a plurality of sliders evenly distributed along the circumference are slidably connected to the rotating chamber. The plurality of sliders slide radially along the rotating chamber as the gear ring rotates. A pair of push rods are rotatably connected to each of the plurality of sliders. The pair of push rods are respectively rotatably connected to a pair of push plates.

[0010] Furthermore, a sleeve is rotatably connected to the rotating chamber, and multiple rockers are evenly distributed along the circumference of the sleeve; each of the multiple rockers is rotatably connected to a traction rod, and the other end of the traction rod is rotatably connected to the slider.

[0011] Furthermore, an output wheel that meshes with a synchronous gear ring is rotatably connected inside the rotating chamber, and a synchronous crank is coaxially fixed to the output wheel; a connecting rod is rotatably connected to the synchronous crank, and the other end of the connecting rod is rotatably connected to one of the rockers.

[0012] Furthermore, the push plate is provided with an inner groove corresponding to the inner and outer cutting blades, and the partition plate is provided with an outer groove corresponding to the outer cutting blade; the push plate is evenly distributed with inner through holes, and the partition plate is evenly distributed with outer through holes at the end near the outer groove; the bottom of the feeding bin is provided with a discharge port communicating with the storage bin, and the feeding bin is provided with a filter screen corresponding to the discharge port.

[0013] Furthermore, the bag-discharging structure includes path structures located at both ends of the bag-discharging chamber. The output end of the path structure is connected to a connecting frame, and the path structure can drive the connecting frame to move along a semi-circular path. A reciprocating clamping chamber is rotatably connected to the connecting frame, and the clamping chamber is provided with a clamping structure for clamping the packaging bag. A swing motor is fixedly connected to the connecting frame, and the output end of the swing motor is coaxially fixedly connected to the clamping chamber.

[0014] Furthermore, the path structure includes a path motor fixedly connected to the bag outlet chamber, and an input rod fixedly connected to the output end of the path motor; both ends of the bag outlet chamber are rotatably connected to a slide cylinder, and a slide rod fixedly connected perpendicularly to the connecting frame is slidably connected to each pair of slide cylinders.

[0015] Furthermore, the clamping structure includes a clamping motor fixedly connected to the clamping chamber, with a driving bevel gear fixedly connected to the output end of the clamping motor; a synchronous shaft is rotatably connected to the clamping chamber, and multiple connecting bevel gears are fixedly connected to the synchronous shaft, with the driving bevel gear meshing with one of the connecting bevel gears; each of the multiple connecting bevel gears meshes with a driven bevel gear, and each of the multiple driven bevel gears is coaxially fixedly connected to a bidirectional crank; a moving rod is rotatably connected to the bidirectional crank, and a clamping block is rotatably connected to the moving rod and slidably connected to the clamping chamber, with multiple clamping rods fixedly connected to the clamping block; a guide rod is fixedly connected to the clamping chamber, and the clamping block is slidably connected to the guide rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In use, the intermittent rotation of the rotating chamber and the partition plate, along with the cooperation of the inner and outer cutting blades, separates the packaging bag. A pair of push plates work together to reciprocate and squeeze the packaging bag, causing the drag-reducing agent inside the packaging bag to flow into the storage hopper for storage, thus realizing automatic feeding of the storage hopper and improving the convenience of feeding the storage hopper.

[0018] 2. When in use, the present invention drives the clamping structure to move along a semi-circular path through the path structure. The clamping structure first moves along the circumference of the semi-circle to the position of contact with the packaging bag to clamp the packaging bag. Then, through the radial movement along the semi-circular path, it drives the packaging bag away from the feeding bin, so that the packaging bag flows out through the feeding bin and the bag discharge bin, so that the staff can collect the packaging bag. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the structure of the present invention;

[0020] Figure 2 is a cross-sectional view of the feeding device in this invention;

[0021] Figure 3 is a first isometric view of the internal structure of the feeding bin in this invention;

[0022] Figure 4 is a second isometric view of the internal structure of the feeding bin in this invention;

[0023] Figure 5 is a schematic diagram of the cooperation state of the push plate, push rod, rotating chamber and other structures in this invention;

[0024] Figure 6 is a schematic diagram of the engagement state of the synchronous gear ring, cutting wheel, output wheel, connecting rod, rocker arm, traction rod and other structures in this invention;

[0025] Figure 7 is a schematic diagram of the engagement state of the drive wheel, outer gear ring, inner gear ring, synchronous gear ring, cutting wheel, output wheel, inner cutting blade and other structures in this invention;

[0026] Figure 8 is a schematic diagram of the partition plate in this invention;

[0027] Figure 9 is a schematic diagram of the cooperation state of the bag outlet compartment and the bag outlet structure in this invention;

[0028] Figure 10 is a schematic diagram of the bag-out structure in this invention;

[0029] Figure 11 is a schematic diagram of the clamping structure in this invention;

[0030] Figure 12 is an enlarged schematic diagram of region A in Figure 11 of this invention;

[0031] In the diagram: 1. Storage hopper, 2. Fan, 3. Gas-solid jet injector, 4. Feeding hopper, 5. Intermittent motor, 6. Feeding port, 7. Bag outlet hopper, 8. Bag outlet structure, 9. Filter screen, 10. Inner cutting blade, 11. Divider plate, 12. Push plate, 13. Outer cutting blade, 14. Push rod, 15. Rotating chamber, 16. Grooved wheel, 17. Pulley, 18. Inner gear ring, 19. Drive motor, 20. Drive wheel, 21. Outer gear ring, 22. Drive wheel, 23. Synchronous gear ring, 24. Output. 25. Wheel, 26. Connecting rod, 27. Cutting wheel, 28. Rocker arm, 29. Traction rod, 30. Slider, 31. Synchronous crank, 32. Path motor, 33. Input rod, 34. Slide rod, 35. Slide cylinder, 36. Connecting frame, 37. Clamping chamber, 38. Swing motor, 39. Clamping motor, 40. Clamping rod, 41. Guide rod, 42. Driving bevel gear, 43. Connecting bevel gear, 44. Driven bevel gear, 45. Bidirectional crank, 46. Moving rod, 47. Clamping block. Detailed Implementation

[0032] A skid-mounted device for online preparation of dry powder drag-reducing agents, as shown in Figures 1-12, includes a storage silo 1 with a feeding device; a gas-solid jet injector 3 is connected to the outlet of the storage silo 1, and a fan 2 is connected to the gas-solid jet injector 3; the feeding device includes a feeding silo 4 communicating with the storage silo 1, with a feeding port 6; a bag outlet 7 is also provided on the feeding silo 4, with a bag outlet structure 8; rotating chambers 15 are intermittently rotatably connected to the feeding silo 4, and the rotating chambers 15 are evenly distributed along the circumference. There are multiple partition plates 11; each of the adjacent partition plates 11 is provided with a cutting shaft rotatably connected to the rotating chamber 15, and the cutting shaft is provided with multiple inner cutting blades 10; the inner wall of the feeding chamber 4 is fixedly connected with an outer cutting blade 13 corresponding to the inner cutting blade 10, and the outer cutting blade 13 is located on the inner wall of the feeding chamber 4 away from the bag outlet chamber 7; each of the multiple cutting shafts is rotatably connected with a pair of push plates 12 with opposite rotation directions, and the pair of push plates 12 reciprocate along the cutting shaft as the cutting shaft rotates and squeezes the drag-reducing agent packaging bag.

[0033] In use, the bagged drag-reducing agent is placed into the feeding chamber 4 through the feeding port 6. The drag-reducing agent is supported by adjacent partition plates 11 and push plates 12. The cutting shaft rotates, and the cutting shaft cuts the packaging bag through the inner cutting blade 10, allowing the drag-reducing agent in the packaging bag to flow between the adjacent partition plates 11. At the same time, a pair of push plates 12 rotate along the cutting shaft to squeeze the packaging bag, causing the drag-reducing agent in the packaging bag to flow out quickly. In addition, the rotating chamber 15 rotates, and the rotating chamber 15 drives the packaging bag to rotate through the partition plates 11, push plates 12, etc., and contacts the outer cutting blade 13, causing the outer cutting blade 13 to cut the packaging bag again. The inner cutting blade 10 and the outer cutting blade 13 work together to separate the packaging bag, and the pair of push plates 12 work together to reciprocate to squeeze the packaging bag, allowing the drag-reducing agent in the packaging bag to flow into the storage chamber 1 for storage, realizing the feeding process of the storage chamber 1. In addition, the bag discharge chamber 7 and the bag discharge structure 8 work together to help separate the packaging bag from the feeding chamber 4, realizing the collection of the packaging bag.

[0034] Further, as shown in Figure 3, in order to make the rotating chamber 15 rotate intermittently, an intermittent motor 5 is fixedly connected to the feeding chamber 4, and a lever 17 is fixedly connected to the output end of the intermittent motor 5. A grooved wheel 16 corresponding to the lever 17 is coaxially fixedly connected to the rotating chamber 15. The rotating chamber 15 rotates intermittently by the cooperation of the lever 17 and the grooved wheel 16. A limit plate is coaxially fixedly connected to the lever 17, and a limit groove corresponding to the limit plate is provided on the grooved wheel 16. The grooved wheel 16 is limited by the cooperation of the limit plate and the limit groove to improve the stability of the grooved wheel 16 and the rotating chamber 15.

[0035] Further, as shown in Figures 4 and 6, in order to make the multiple cutting shafts rotate synchronously, a drive motor 19 is fixedly connected to the feeding bin 4, and a drive wheel 22 is fixedly connected to the output end of the drive motor 19. An external gear ring 21 that meshes with the drive wheel 22 is rotatably connected to the feeding bin 4. A synchronous gear ring 23 is rotatably connected inside the rotating bin 15. Each of the multiple cutting shafts is coaxially fixedly connected to a cutting wheel 26 that meshes with the synchronous gear ring 23. An internal gear ring 18 is coaxially fixedly connected to the external gear ring 21, and a drive wheel 20 that is coaxially fixedly connected to one of the cutting wheels 26 meshes with the internal gear ring 18.

[0036] Specifically, when the cutting shaft needs to rotate, the drive motor 19 is started, which drives the drive wheel 22 to rotate. The drive wheel 22 drives the outer gear ring 21 to rotate, and the outer gear ring 21 drives the drive wheel 20 to rotate through the inner gear ring 18. The drive wheel 20 drives one of the cutting wheels 26 to rotate, and the cutting wheel 26 drives the other cutting wheels 26 to rotate synchronously through the synchronous gear ring 23, which in turn drives the cutting shaft to rotate synchronously. The cutting shaft cuts the drag-reducing agent packaging bag through the inner cutting blade 10.

[0037] Further, as shown in Figures 5 and 6, in order to make the push plate 12 reciprocate and rotate along the cutting axis, a plurality of sliders 29 evenly distributed along the circumference are slidably connected to the rotating chamber 15. The plurality of sliders 29 slide radially along the rotating chamber 15 as the gear ring rotates. A pair of push rods 14 are rotatably connected to each of the plurality of sliders 29. The pair of push rods 14 are respectively rotatably connected to the pair of push plates 12. By making the sliders 29 slide radially along the rotating chamber 15, the sliders 29 drive the push plate 12 to rotate along the cutting axis through the push rods 14.

[0038] Furthermore, in order to enable multiple sliders 29 to slide synchronously along the radial direction of the rotating chamber 15, a sleeve is rotatably connected to the rotating chamber 15, and multiple rocker arms 27 are evenly distributed along the circumference of the sleeve; each of the multiple rocker arms 27 is rotatably connected to a traction rod 28, and the other end of the traction rod 28 is rotatably connected to the slider 29; by rotating the sleeve at a certain angle, the sleeve drives the traction rod 28 to rotate through the rocker arms 27, and the traction rod 28 drives the slider 29 to slide radially along the rotating chamber 15.

[0039] Furthermore, to enable the sleeve to reciprocate within a certain angle range, an output wheel 24 meshing with a synchronous gear ring 23 is rotatably connected inside the rotating chamber 15. A synchronous crank 30 is coaxially fixed to the output wheel 24. A connecting rod 25 is rotatably connected to the synchronous crank 30, and the other end of the connecting rod 25 is rotatably connected to one of the rockers 27. As the synchronous gear ring 23 rotates, the output wheel 24 rotates along the rotating chamber 15, and the output wheel 24 drives the synchronous crank 30 to rotate. The synchronous crank 30, the connecting rod 25, and the rocker 27 form a crank-rocker 27 mechanism, so that the synchronous crank 30 drives the rocker 27 to swing within a certain angle range through the connecting rod 25. The rocker 27 drives the sleeve to reciprocate within a certain angle range.

[0040] Furthermore, the push plate 12 is provided with an inner groove corresponding to the inner cutting blade 10 and the outer cutting blade 13, and the partition plate 11 is provided with an outer groove corresponding to the outer cutting blade 13; the push plate 12 is provided with inner through holes evenly distributed, and the partition plate 11 is provided with outer through holes evenly distributed at the end near the outer groove; the inner through holes allow the drag-reducing agent to flow within the partition plate 11; the outer through holes allow the drag-reducing agent to flow into the other side of the partition plate 11 through the outer through holes as the partition plate 11 rotates, so that after the drag-reducing agent packaging bag is divided, the drag-reducing agent can quickly flow to the storage bin 1 through the outer through holes; the bottom of the feeding bin 4 is provided with a discharge port communicating with the storage bin 1, and the feeding bin 4 is provided with a filter screen 9 corresponding to the discharge port, which filters the drag-reducing agent to prevent packaging bag debris from flowing into the feeding bin 4.

[0041] Further, as shown in Figures 9 and 10, the bag-discharging structure 8 includes path structures located at both ends of the bag-discharging chamber 7. The output end of the path structure is connected to a connecting frame 35, and the path structure can drive the connecting frame 35 to move along a semi-circular path. A reciprocating clamping chamber 36 is rotatably connected to the connecting frame 35, and the clamping chamber 36 is provided with a clamping structure for clamping the packaging bag. A swing motor 37 is fixedly connected to the connecting frame 35, and the output end of the swing motor 37 is coaxially fixedly connected to the clamping chamber 36.

[0042] The path structure drives the clamping structure to move along a semi-circular path, so that the clamping structure first moves along the semi-circular circumference to the position of contact with the packaging bag. The swing motor 37 drives the clamping structure on the clamping chamber 36 to extend into the feeding bin 4 to clamp the packaging bag. Then, through the radial movement along the semi-circular path, the packaging bag is driven away from the feeding bin 4, so that the packaging bag flows out through the feeding bin 4 and the bag outlet bin 7.

[0043] Furthermore, the path structure includes a path motor 31 fixedly connected to the bag outlet chamber 7, and an input rod 32 fixedly connected to the output end of the path motor 31; both ends of the bag outlet chamber 7 are rotatably connected to a slide cylinder 34, and a slide rod 33 slidably connected to each of the slide cylinders 34 and perpendicularly fixed to the connecting frame 35; when the path structure is in use, the path motor 31 is started, the path motor 31 drives the input rod 32 to rotate, the input rod 32 drives the slide rod 33 to slide along the slide cylinder 34, and at the same time, the slide rod 33 drives the slide cylinder 34 to rotate along the bag outlet chamber 7, so that the slide rod 33 drives the connecting frame 35 to move along a semi-circular path.

[0044] Further, as shown in Figures 11 and 12, the clamping structure includes a clamping motor 38 fixedly connected to the clamping chamber 36, and a driving bevel gear 41 fixedly connected to the output end of the clamping motor 38; a synchronous shaft is rotatably connected inside the clamping chamber 36, and multiple connecting bevel gears 42 are fixedly connected to the synchronous shaft, with the driving bevel gear 41 meshing with one of the connecting bevel gears 42; each of the multiple connecting bevel gears 42 meshes with a driven bevel gear 43, and each of the multiple driven bevel gears 43 is coaxially fixedly connected to a bidirectional crank 44; a moving rod 45 is rotatably connected to the bidirectional crank 44, and a clamping block 46 slidably connected to the clamping chamber 36 is rotatably connected to the moving rod 45, with multiple clamping rods 39 fixedly connected to the clamping block 46; a guide rod 40 is fixedly connected inside the clamping chamber 36, and the clamping block 46 is slidably connected to the guide rod 40.

[0045] When the clamping structure is in use, the clamping motor 38 is started, which drives the driving bevel gear 41 to rotate. The driving bevel gear 41 drives one of the connecting bevel gears 42 to rotate. The connecting bevel gear 42 drives the remaining connecting bevel gears 42 to rotate through the synchronous shaft. The connecting bevel gear 42 drives the bidirectional crank 44 to rotate through the driven bevel gear 43. The bidirectional crank 44 drives the clamping block 46 to slide along the guide rod 40 through the moving rod 45. The clamping block 46 clamps the packaging bag through the clamping rod 39.

[0046] The working process of this invention is as follows:

[0047] In use, the bagged drag-reducing agent is placed into the feeding hopper 4 through the feeding port 6. The drag-reducing agent is supported by the adjacent partition plates 11 and the push plate 12. The drive motor 19 is started, which drives the drive wheel 22 to rotate. The drive wheel 22 drives the outer gear ring 21 to rotate. The outer gear ring 21 drives the drive wheel 20 to rotate through the inner gear ring 18. The drive wheel 20 drives one of the cutting wheels 26 to rotate. The cutting wheel 26 drives the other cutting wheels 26 to rotate synchronously through the synchronous gear ring 23, which in turn drives the cutting shaft to rotate synchronously. The cutting shaft cuts the drag-reducing agent packaging bag through the inner cutting blade 10, so that the drag-reducing agent in the packaging bag flows between the adjacent partition plates 11.

[0048] At the same time, the synchronous gear ring 23 drives the output wheel 24 to rotate, the output wheel 24 rotates synchronously with the crank 30, and the synchronous crank 30 drives the rocker arm 27 to swing within a certain angle range through the connecting rod 25. The rocker arm 27 drives the sleeve to reciprocate within a certain angle range. The sleeve drives multiple traction rods 28 to rotate through multiple rocker arms 27. The traction rods 28 drive the slider 29 to slide radially along the rotating chamber 15. The slider 29 drives the push plate 12 to rotate along the cutting axis through the push rod 14, so that a pair of push plates 12 cooperate to squeeze the packaging bag, so that the drag-reducing agent in the packaging bag flows out quickly.

[0049] In addition, the intermittent motor 5 is started. The intermittent motor 5 drives the rotating chamber 15 to rotate a certain angle through the cooperation of the lever 17 and the groove wheel 16. The rotating chamber 15 drives the packaging bag to rotate through the partition plate 11, the push plate 12, etc., and comes into contact with the outer cutting knife 13, so that the outer cutting knife 13 can cut the packaging bag again. During the rotation of the partition plate 11, the drag-reducing agent flows into the storage chamber 1 through the external through hole and the filter screen 9 on the partition plate 11 under the action of the partition plate 11 and its own gravity.

[0050] When the packaging bag rotates with the separator plate 11 to correspond with the bag outlet 7, the path motor 31 is started. The path motor 31 drives the input rod 32 to rotate. The input rod 32 drives the slide rod 33 to slide along the slide cylinder 34. At the same time, the slide rod 33 drives the slide cylinder 34 to rotate along the bag outlet 7, so that the slide rod 33 drives the connecting frame 35 to move along a semi-circular path. The clamping structure first moves along the semi-circular circumference to the position of contact with the packaging bag. The swing motor 37 drives the clamping structure on the clamping chamber 36 to extend into the feeding chamber 4 to clamp the packaging bag. Then, through the radial movement along the semi-circular path, the packaging bag is driven away from the feeding chamber 4, so that the packaging bag flows out through the feeding chamber 4 and the bag outlet 7.

Claims

1. A skid-mounted device for online preparation of dry powder drag-reducing agent, comprising a storage silo (1) and a feeding device on the storage silo (1); characterized in that: The feeding device includes a feeding bin (4) connected to the storage bin (1), and a feeding port (6) is provided on the feeding bin (4); the feeding bin (4) is also provided with a bag outlet bin (7), and a bag outlet structure (8) is provided on the bag outlet bin (7); a rotating bin (15) is intermittently rotatably connected to the feeding bin (4), and multiple partition plates (11) are evenly distributed along the circumference of the rotating bin (15); a cutting shaft is provided between adjacent partition plates (11) and rotatably connected to the rotating bin (15), and multiple inner cutting blades (10) are provided on the cutting shaft; an outer cutting blade (13) corresponding to the inner cutting blade (10) is fixedly connected to the inner wall of the feeding bin (4), and the outer cutting blade (13) is located on the inner wall of the feeding bin (4) away from the bag outlet bin (7); a pair of push plates (12) with opposite rotation directions are rotatably connected to the multiple cutting shafts, and the pair of push plates (12) reciprocate along the cutting shaft as the cutting shaft rotates and squeezes the drag-reducing agent packaging bag.

2. The skid-mounted equipment for online preparation of dry powder drag-reducing agents as described in claim 1, characterized in that: An intermittent motor (5) is fixedly connected to the feeding bin (4), and a lever (17) is fixedly connected to the output end of the intermittent motor (5). A grooved wheel (16) corresponding to the lever (17) is coaxially fixedly connected to the rotating bin (15). A limit plate is coaxially fixedly connected to the lever (17), and a limit groove corresponding to the limit plate is provided on the grooved wheel (16).

3. The skid-mounted equipment for online preparation of dry powder drag-reducing agents as described in claim 1, characterized in that: A drive motor (19) is fixedly connected to the feeding bin (4), and a drive wheel (22) is fixedly connected to the output end of the drive motor (19). An external gear ring (21) that meshes with the drive wheel (22) is rotatably connected to the feeding bin (4). A synchronous gear ring (23) is rotatably connected inside the rotating bin (15). A plurality of cutting shafts are coaxially fixedly connected to cutting wheels (26) that mesh with the synchronous gear ring (23). An internal gear ring (18) is coaxially fixedly connected to the external gear ring (21), and a drive wheel (20) that is coaxially fixedly connected to one of the cutting wheels (26) is meshed on the internal gear ring (18).

4. The skid-mounted equipment for online preparation of dry powder drag-reducing agents as described in claim 3, characterized in that: Multiple sliders (29) are slidably connected to the rotating chamber (15) and are evenly distributed along the circumference. The multiple sliders (29) slide radially along the rotating chamber (15) as the gear ring rotates. A pair of push rods (14) are rotatably connected to each of the multiple sliders (29). The pair of push rods (14) are rotatably connected to a pair of push plates (12) respectively.

5. The skid-mounted equipment for online preparation of dry powder drag-reducing agents as described in claim 4, characterized in that: A sleeve is rotatably connected to the rotating chamber (15), and multiple rockers (27) are evenly distributed along the circumference of the sleeve; each of the multiple rockers (27) is rotatably connected to a traction rod (28), and the other end of the traction rod (28) is rotatably connected to the slider (29).

6. The skid-mounted equipment for online preparation of dry powder drag-reducing agents as described in claim 5, characterized in that: The rotating chamber (15) is also rotatably connected to an output wheel (24) that meshes with a synchronous gear ring (23). The output wheel (24) is coaxially fixed to a synchronous crank (30). A connecting rod (25) is rotatably connected to the synchronous crank (30), and the other end of the connecting rod (25) is rotatably connected to one of the rockers (27).

7. The skid-mounted equipment for online preparation of dry powder drag-reducing agents as described in claim 1, characterized in that: The push plate (12) is provided with an inner groove corresponding to the inner cutting blade (10) and the outer cutting blade (13), and the partition plate (11) is provided with an outer groove corresponding to the outer cutting blade (13); the push plate (12) is provided with an inner through hole evenly distributed, and the partition plate (11) is provided with an outer through hole evenly distributed at the end near the outer groove; the bottom of the feeding bin (4) is provided with a discharge port communicating with the storage bin (1), and the feeding bin (4) is provided with a filter screen (9) corresponding to the discharge port.

8. The skid-mounted equipment for online preparation of dry powder drag-reducing agents as described in claim 1, characterized in that: The bag-out structure (8) includes a path structure located at both ends of the bag-out chamber (7). The output end of the path structure is connected to a connecting frame (35). The path structure can drive the connecting frame (35) to move along a semi-circular path. A reciprocating clamping chamber (36) is rotatably connected to the connecting frame (35). The clamping chamber (36) is provided with a clamping structure for clamping the packaging bag. A swing motor (37) is fixedly connected to the connecting frame (35). The output end of the swing motor (37) is coaxially fixedly connected to the clamping chamber (36).

9. The skid-mounted equipment for online preparation of dry powder drag-reducing agents as described in claim 8, characterized in that: The path structure includes a path motor (31) fixedly connected to the bag outlet (7), and an input rod (32) fixedly connected to the output end of the path motor (31); both ends of the bag outlet (7) are rotatably connected to a slide cylinder (34), and a slide rod (33) is slidably connected to each of the slide cylinders (34) and fixedly connected to the connecting frame (35).

10. The skid-mounted equipment for online preparation of dry powder drag-reducing agents as described in any one of claims 8 or 9, characterized in that: The clamping structure includes a clamping motor (38) fixedly connected to the clamping chamber (36), and a driving bevel gear (41) fixedly connected to the output end of the clamping motor (38); a synchronous shaft is rotatably connected inside the clamping chamber (36), and multiple connecting bevel gears (42) are fixedly connected to the synchronous shaft, with the driving bevel gear (41) meshing with one of the connecting bevel gears (42); each of the multiple connecting bevel gears (42) meshes with a driven bevel gear (43), and each of the multiple driven bevel gears (43) is coaxially fixedly connected to a bidirectional crank (44); a moving rod (45) is rotatably connected to the bidirectional crank (44), and a clamping block (46) slidably connected to the clamping chamber (36) is rotatably connected to the moving rod (45), with multiple clamping rods (39) fixedly connected to the clamping block (46); a guide rod (40) is fixedly connected inside the clamping chamber (36), and the clamping block (46) is slidably connected to the guide rod (40).

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