Drying and dehumidifying device for producing solid drag reducer for fracturing

Abstract

The utility model provides a drying and dehumidifying device for producing a solid drag reducer for fracturing, belongs to the technical field of petroleum and natural gas exploitation, and solves the problems that an existing solid drag reducer is low in drying and dehumidifying efficiency and poor in drying and dehumidifying effect, and the solid drag reducer cannot be prepared on an assembly line easily. The drying and dehumidifying device for producing the solid drag reducer for fracturing comprises a drying conveying chain, a vibration conveying mechanism is arranged at the feeding end of the drying conveying chain, a material crushing mechanism is arranged at the discharging end of the vibration conveying mechanism, a hot air mechanism and a hot oil circulating mechanism are arranged on the drying conveying chain, and an ash removal scraping roller is further arranged at the feeding end of the drying conveying chain. According to the utility model, wet slag charge is uniformly spread for three times, the spreading is more uniform, the temperature in the drying oven forms hot air heat exchange, and the wet slag charge is quickly dried; and the dried materials are beaten and crushed through the material crushing mechanism, adhesion and caking of the materials are avoided, and the functions of effective crushing and stable conveying of the materials are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil and natural gas exploitation, and relates to a drying and dehumidifying device, in particular to a drying and dehumidifying device for producing a solid drag reducer for fracturing. Background Art

[0002] Adding a small amount of polymer to a fluid can reduce flow resistance in turbulent conditions. This phenomenon is called polymer drag reduction, and the chemical additives used to reduce fluid flow resistance are called drag reducers. Drag reducers are flexible, linear polymers with a molecular weight greater than one million. Adding a small amount of such polymers to a fluid increases flow rate and reduces resistance. Using drag reducers to reduce fluid drag is the most widely used method among many drag reduction technologies.

[0003] The application of pipeline transportation of original and refined oil can reduce the intermediate pumping stations in long pipelines, shorten the oil unloading time at the terminal, and improve work efficiency.

[0004] However, existing drag reducers are generally liquid, which cannot meet the needs of many application scenarios and has limited effectiveness. Solid drag reducers are generally powdered and require drying and dehumidification during the production process. However, existing drying and dehumidification methods are ineffective and inefficient, which is not conducive to production requirements.

[0005] Therefore, we propose a drying and dehumidifying device for the production of solid drag reducers for fracturing. The device spreads the wet slag evenly three times to make the material more evenly spread. The temperature inside the oven forms hot air heat exchange to quickly dry the wet slag. The dried material is struck and crushed by the material crushing mechanism to avoid material adhesion and agglomeration, thereby achieving effective material crushing and stable transportation functions. Summary of the Invention

[0006] The purpose of this utility model is to address the above-mentioned problems in the existing technology and propose a drying and dehumidifying device for the production of solid drag reducers for fracturing. The technical problems to be solved by this utility model are: how to achieve uniform spreading of wet slag materials and rapid drying; and how to crush them by beating to avoid material adhesion and agglomeration, thereby achieving effective material crushing and stable transportation functions.

[0007] The purpose of this utility model can be achieved through the following technical solutions:

[0008] A drying and dehumidifying device for producing solid drag reducers for fracturing comprises a drying conveyor chain, a vibrating conveying mechanism is provided at the feed end of the drying conveyor chain, a material crushing mechanism is provided at the discharge end of the vibrating conveying mechanism, a hot air mechanism and a hot oil circulation mechanism are provided on the drying conveyor chain, and a dust-cleaning scraper is also provided at the feed end of the drying conveyor chain.

[0009] The working principle of the utility model: During the production and processing of solid drag reducers for fracturing, a rake dryer will be used for raking and drying. The moist slag after raking and drying will fall onto the vibrating conveying mechanism, be evenly spread, and evenly enter the interior of the drying conveying chain. The drying conveying chain is connected to an external thermal oil furnace and a hot air furnace to dry the moist slag with hot air. After drying, the material falls into a material crushing mechanism to crush the material lumps formed by drying. The material crushing mechanism is connected to an external induced draft fan to draw the crushed material into a grinder for crushing. A cleaning scraper roller scrapes the material from the drying conveying chain to avoid material adhesion.

[0010] The drying conveyor chain includes a conveyor chain base, on which an oven and a conveyor chain motor are fixed. Two symmetrically arranged conveyor sprocket pairs are provided inside the oven. The output shaft of the conveyor chain motor is transmission-connected to the rotating shaft of the conveyor sprocket pair. A plurality of chain plates are provided on the two conveyor sprocket pairs. The dust-cleaning scraper roller abuts against the lower end surface of the chain plate. A plurality of exhaust hoods are provided at the upper end of the oven, which are connected to an external exhaust fan.

[0011] With the above structure, the wet slag falls evenly on the chain plate, and the output shaft of the conveyor chain motor drives the conveyor sprocket pair to move, thereby driving the chain plates on the two conveyor sprocket pairs to move, that is, driving the wet slag to move inside the drying oven for drying. The steam generated by drying is extracted from the exhaust hood by the external exhaust fan.

[0012] The hot air mechanism includes a long hot air box and an air guide fan, which are fixed to the upper end of the conveyor chain base, the air inlet end of the air guide fan is connected to the external hot air furnace, and the air outlet end of the air guide fan is connected to the long hot air box, and the upper end of the long hot air box is connected to a plurality of air outlet branch pipes 1 and a plurality of air outlet branch pipes 21, and air valves are provided on the air outlet branch pipes 1 and 21, the air outlet of the air outlet branch pipe 1 is located at the lower end of the chain plate, and the air outlet of the air outlet branch pipe 21 is located at the upper end of the chain plate.

[0013] With the above structure, the air inlet end of the air guide fan is connected to the external hot air furnace, and the hot air is drawn into the long hot air box, and then blown into the oven through a plurality of air outlet branch pipes 1 and a plurality of air outlet branch pipes 2 and 1, and evenly blown on the upper and lower ends of the chain plate to dry the wet slag with hot air, and the air valve controls the ventilation volume.

[0014] The hot oil circulation mechanism includes a heat transfer oil main pipe, which is fixed to the oven. The heat transfer oil main pipe is provided with an oil inlet valve, which is connected to an external heat transfer oil furnace. The heat transfer oil main pipe is connected to a plurality of heat transfer oil branch pipes, and the heat transfer oil branch pipes are provided with two upper and lower distributed oil return pipes. The upper and lower distributed oil return pipes are respectively located on the upper and lower sides of the chain plate, and the oil return pipes run through the oven. The oil inlet valve and the oil return pipe are both connected to the external heat transfer oil furnace, and the oil return pipes are both provided with heat transfer oil valves.

[0015] With the above structure, the thermal oil furnace injects hot oil into the thermal oil main pipe through the oil inlet valve, and then enters several thermal oil branch pipes. By cooperating with the hot air mechanism, heat exchange treatment is carried out to increase the internal temperature of the oven. The upper and lower distributed return oil pipes are located on the upper and lower sides of the chain plate to ensure the temperature requirements at the chain plate. The oil inlet valve and the thermal oil valve cooperate to adjust the oil volume. The cold oil after heat exchange flows back to the thermal oil furnace from the return oil pipe.

[0016] Base comprises support, castor, and frame, and frame upper is provided with guide rail, and support and conveyer frames movable end contact site are provided with recoil spring, and castor is arranged on the pin of base bottom four, to carry mobile handler location.

[0017] With the above structure, the wet slag after raking dry falls onto the vibrating diversion component, is evenly spread once, and then falls onto the conveyor belt. The baffle plate prevents the slag from overflowing, and the output shaft of the conveying motor drives one of the rotating shafts of the conveyor belt to rotate, and the slag is transported to two symmetrically arranged feeding rollers. During the conveying process, the vibrating diversion component spreads the slag on the conveyor belt evenly for a second time, and the other rotating shaft of the conveyor belt drives the feeding roller on one side to rotate in the same direction through the second pulley pair, and the other rotating shaft of the conveyor belt drives the gear shaft to rotate in the opposite direction through the reversing gear pair. The gear shaft raises the first pulley pair to drive the feeding roller on the other side to rotate, and the two feeding rollers rotate in opposite directions, and the material falls on the two feeding rollers for three times. The material is evenly spread on the chain plate for fast drying.

[0018] The vibration diversion assembly includes a vibration frame and four fixed bases, vibration springs are provided between the vibration frame and the four fixed bases, the four fixed bases are symmetrical in pairs, the fixed bases are respectively fixed on the baffle plates, an inclined vibration hopper is fixed on the upper end of the vibration frame, a number of radial diversion ribs are provided on the vibration hopper, a vibration motor is fixed on the side of the vibration frame, a flat base plate is fixed on the middle part of the lower end of the vibration frame, two symmetrically arranged articulated frames are fixed on the flat base plate, a number of equidistant and evenly distributed flat material supporting rods are provided between the two articulated frames, and the lower ends of the flat material supporting rods are in contact with the conveyor belt.

[0019] With the above structure, the vibration motor vibrates, driving the vibration frame to vibrate on four fixed bases through the vibration springs, thereby driving the vibration hopper and several radial diversion ribs above it to vibrate, and the slag falls inside the vibration hopper and is evenly spread through the diversion ribs. The material then falls onto the conveyor belt. The vibration frame drives the paving base plate to vibrate at the same time, and the paving base plate drives the two articulated frames and several equidistant and evenly distributed paving rods above them to vibrate. The lower ends of the paving rods abut against the conveyor belt, and the slag on the conveyor belt is vibrated and spread, that is, secondary uniform paving is performed.

[0020] The material crushing mechanism includes a crushing bracket, which is fixed above the discharge end of the conveyor chain base. A collecting hopper is fixed inside the crushing bracket, and the collecting hopper is located below the chain plate. A conveying pipe is fixed at the lower end of the collecting hopper, and a discharge tee is fixed at the end of the conveying pipe. A conveying screw rod is provided for the internal rotation of the discharge tee and the conveying pipe. A double-axis motor is fixed on the crushing bracket, and one side output shaft of the double-axis motor is fixedly connected to the conveying screw rod. A striking rod is provided for the internal rotation of the collecting hopper, and an acceleration pulley pair is provided between the striking rod and the other side output shaft of the double-axis motor. A number of striking whip ropes are detachably provided on the striking rod, and the other connecting end of the discharge tee is connected to an external induced draft fan.

[0021] With the above structure, the dried material falls into the collecting hopper, and the output shaft on the other side of the dual-axis motor drives the striking rod to rotate rapidly through the acceleration pulley pair, and the striking rod drives several striking whip ropes on it to rotate rapidly, hitting and crushing the material. The crushed material falls into the conveying pipe, and the output shaft on one side of the dual-axis motor drives the conveying screw rod to rotate, and conveys the logistics to the discharge tee. The external induced draft fan sucks the crushed material out from the other connecting end of the discharge tee and introduces it into the crusher for crushing.

[0022] Compared with the existing technology, the drying and dehumidifying device for producing solid drag reducers for fracturing has the following advantages:

[0023] The damp slag is spread evenly three times through the vibrating conveying mechanism, achieving more uniform spreading and facilitating rapid drying.

[0024] The dry conveyor chain cooperates with the hot air mechanism to achieve hot air drying of the wet slag. The dry conveyor chain cooperates with the hot oil circulation mechanism to increase the internal temperature of the oven and ensure the temperature requirement at the chain plate. At the same time, the hot air mechanism cooperates with the hot oil circulation mechanism to form hot air heat exchange and quickly dry the wet slag.

[0025] The material crushing mechanism is used to crush the dried material to avoid material adhesion and agglomeration, thus achieving effective material crushing and stable conveying functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0027] Figure 2 It is a front view structural schematic diagram of the present utility model.

[0028] Figure 3 It is a schematic diagram of the partial three-dimensional structure of the conveyor chain in the utility model.

[0029] Figure 4 It is a schematic diagram of the left side three-dimensional structure of the vibration conveying mechanism in the utility model.

[0030] Figure 5 It is a schematic diagram of the right side three-dimensional structure of the vibration conveying mechanism in the utility model.

[0031] Figure 6 It is a schematic diagram of the upper three-dimensional structure of the vibration diversion component in the utility model.

[0032] Figure 7 It is a schematic diagram of the lower three-dimensional structure of the vibration diversion component in the utility model.

[0033] Figure 8 It is a three-dimensional structural diagram of the material crushing mechanism in the utility model.

[0034] Figure 9 It is a schematic diagram of the top view of the material crushing mechanism in the utility model.

[0035] In the figure, 1. Vibrating conveying mechanism; 2. Drying conveying chain; 3. Hot air mechanism; 4. Hot oil circulation mechanism; 5. Material crushing mechanism; 6. Conveyor chain base; 7. Hot air long box; 8. Air valve; 9. Air guide fan; 10. Air outlet branch pipe 1; 11. Conveyor sprocket pair; 12. Drying oven; 13. Chain plate; 14. Exhaust hood; 15. Air outlet branch pipe 21; 16. Oil inlet valve; 17. Thermal oil main pipe; 18. Thermal oil branch pipe; 19. Thermal oil valve; 20. Oil return pipe; 21. Bracket; 22. Conveyor motor; 23. Conveyor crawler; 24. Baffle; 25. Vibrating Dynamic diversion assembly; 26. Reversing gear pair; 27. First pulley pair; 28. Feeding roller; 29. Support frame; 30. Second pulley pair; 31. Vibrating hopper; 32. Diverter rib; 33. Vibrating spring; 34. Flattening rod; 35. Fixed base; 36. Vibrating frame; 37. Vibrating motor; 38. Flattening base plate; 39. Articulated frame; 40. Crushing bracket; 41. Conveying pipe; 42. Discharge tee; 43. Conveying screw rod; 44. Impact rod; 45. Collecting hopper; 46. Impact whip rope; 47. Accelerating pulley pair; 48. Dual-axis motor. DETAILED DESCRIPTION

[0036] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0037] like Figures 1-9 As shown, the drying and dehumidifying device for the production of solid drag reducers for fracturing includes a drying conveyor chain 2, a vibrating conveying mechanism 1 is provided at the feed end of the drying conveyor chain 2, a material crushing mechanism 5 is provided at the discharge end of the vibrating conveying mechanism 1, a hot air mechanism 3 and a hot oil circulation mechanism 4 are provided on the drying conveyor chain 2, and a dust-cleaning scraper is also provided at the feed end of the drying conveyor chain 2.

[0038] During the production and processing of solid drag reducers for fracturing, a rake dryer will be used for raking and drying. The moist slag after raking and drying will fall onto the vibrating conveying mechanism 1, be evenly spread, and evenly enter the drying conveying chain 2. The drying conveying chain 2 is connected to the external thermal oil furnace and hot air furnace to dry the moist slag with hot air. After drying, the material falls into the material crushing mechanism 5 to crush the material lumps formed by drying. The material crushing mechanism 5 is connected to the external induced draft fan to draw the crushed material into the crusher for crushing. The cleaning scraper roller scrapes the material on the drying conveying chain 2 to prevent the material from sticking.

[0039] The drying conveyor chain 2 includes a conveyor chain base 6, on which an oven 12 and a conveyor chain motor are fixed. Two symmetrically arranged conveyor sprocket pairs 11 are provided inside the oven 12. The output shaft of the conveyor chain motor is transmission-connected to the rotating shaft of the conveyor sprocket pair 11. A number of chain plates 13 are provided on the two conveyor sprocket pairs 11. The dust-cleaning scraper roller abuts against the lower end surface of the chain plate 13. A number of exhaust hoods 14 are provided at the upper end of the oven 12, and the exhaust hood 14 is connected to an external exhaust fan.

[0040] The wet slag falls evenly on the chain plate 13, and the output shaft of the conveyor chain motor drives the conveyor sprocket pair 11 to move, thereby driving the chain plates 13 on the two conveyor sprocket pairs 11 to move, that is, driving the wet slag to move inside the drying oven 12 for drying. The steam generated by drying is extracted from the exhaust hood 14 by the external exhaust fan.

[0041] The hot air mechanism 3 includes a long hot air box 7 and an air guide fan 9, which are fixed to the upper end of the conveyor chain base 6. The air inlet end of the air guide fan 9 is connected to the external hot air furnace, and the air outlet end of the air guide fan 9 is connected to the long hot air box 7. The upper end of the long hot air box 7 is connected to several outlet branch pipes 10 and several outlet branch pipes 2 to 15. The outlet branch pipes 10 and 2 to 15 are both provided with air valves 8. The outlet of the outlet branch pipe 10 is located at the lower end of the chain plate 13, and the outlet of the outlet branch pipe 2 to 15 is located at the upper end of the chain plate 13.

[0042] The air inlet end of the air guide fan 9 is connected to the external hot air furnace, and the hot air is drawn into the hot air long box 7, and blown into the interior of the drying oven 12 through several air outlet branch pipes 10 and several air outlet branch pipes 2 to 15, and evenly blown on the upper and lower ends of the chain plate 13 to dry the wet slag with hot air. The air valve 8 controls the ventilation volume.

[0043] The hot oil circulation mechanism 4 includes a thermal oil main pipe 17, which is fixed to the oven 12. An oil inlet valve 16 is provided on the thermal oil main pipe 17, which is connected to an external thermal oil furnace. A plurality of thermal oil branch pipes 18 are connected to the thermal oil main pipe 17. The thermal oil branch pipes 18 are provided with two upper and lower distributed return oil pipes 20. The upper and lower distributed return oil pipes 20 are respectively located on the upper and lower sides of the chain plate 13, and the return oil pipes 20 pass through the oven 12. The oil inlet valve 16 and the return oil pipe 20 are both connected to the external thermal oil furnace, and a thermal oil valve 19 is provided on the return oil pipe 20.

[0044] The thermal oil furnace injects hot oil into the thermal oil main pipe 17 through the oil inlet valve 16, and then enters several thermal oil branch pipes 18. By cooperating with the hot air mechanism 3, heat exchange treatment is carried out to increase the internal temperature of the oven 12. The upper and lower distributed return oil pipes 20 are respectively located on the upper and lower sides of the chain plate 13 to ensure the temperature requirements at the chain plate 13. The oil inlet valve 16 and the thermal oil valve 19 cooperate to adjust the oil volume. The cold oil after heat exchange is then returned to the thermal oil furnace through the return oil pipe 20.

[0045] The vibrating conveying mechanism 1 includes a bracket 21, on which a baffle plate 24, a conveying belt 23 and a conveying motor 22 are provided. The output shaft of the conveying motor 22 is transmission-connected to one of the rotating shafts of the conveying belt 23, the baffle plate 24 is in contact with the upper end surface of the conveying belt 23, and the upper end of the baffle plate 24 is provided with a vibrating diverter assembly 25. A support frame 29 is fixed to the middle part of the lower end of the bracket 21, and two symmetrically arranged stripping rollers 28 are rotatably provided between the support frame 29 and the bracket 21. The two stripping rollers 28 are respectively located on both sides of the support frame 29, and the stripping rollers 28 are located below the discharging end of the conveying belt 23 and above the feeding end of the chain plate 13. A second pulley pair 30 is provided between the stripping roller 28 on one side and one end of the other rotating shaft of the conveying belt 23. A gear shaft is rotatably provided on the bracket 21, and a reversing gear pair 26 is provided between the gear shaft and the other end of the other rotating shaft of the conveying belt 23, and a first pulley pair 27 is provided between the gear shaft and the stripping roller 28 on the other side.

[0046] The wet slag after raking dry falls on the vibrating diversion component 25, is evenly spread once, and then falls on the conveyor belt 23. The baffle plate 24 prevents the slag from overflowing. The output shaft of the conveying motor 22 drives one of the rotating shafts of the conveyor belt 23 to rotate, and the slag is transported to two symmetrically arranged feeding rollers 28. During the conveying process, the vibrating diversion component 25 performs a second uniform spreading of the slag on the conveyor belt 23, and the other rotating shaft of the conveyor belt 23 drives the feeding roller 28 on one side to rotate in the same direction through the second pulley pair 30. The other rotating shaft of the conveyor belt 23 drives the gear shaft to rotate in the opposite direction through the reversing gear pair 26. The gear shaft raises the first pulley pair 27 to drive the feeding roller 28 on the other side to rotate. The two feeding rollers 28 rotate in opposite directions, and the material is evenly spread three times on the two feeding rollers 28, and evenly spread on the chain plate 13 for rapid drying.

[0047] The vibration diversion assembly 25 includes a vibration frame 36 and four fixed bases 35. Vibration springs 33 are provided between the vibration frame 36 and the four fixed bases 35. The four fixed bases 35 are symmetrical in pairs. The fixed bases 35 are respectively fixed on the baffle plate 24. A tilted vibration hopper 31 is fixed to the upper end of the vibration frame 36. The vibration hopper 31 is provided with a number of radial diversion ribs 32. A vibration motor 37 is fixed to the side of the vibration frame 36. A flat base plate 38 is fixed to the middle part of the lower end of the vibration frame 36. Two symmetrically arranged articulated frames 39 are fixed on the flat base plate 38. A number of equidistant and evenly distributed flat material supporting rods 34 are provided between the two articulated frames 39. The lower ends of the flat material supporting rods 34 are in contact with the conveyor belt 23.

[0048] The vibration motor 37 vibrates, driving the vibration frame 36 to vibrate on the four fixed bases 35 through the vibration springs 33, thereby driving the vibration hopper 31 and several radial diverter ribs 32 above it to vibrate, and the slag falls inside the vibration hopper 31, and is evenly spread through the diverter ribs 32. The material then falls onto the conveyor belt 23. The vibration frame 36 simultaneously drives the paving base plate 38 to vibrate, and the paving base plate 38 drives the two articulated frames 39 and several equidistant and evenly distributed paving rods 34 above them to vibrate. The lower ends of the paving rods 34 abut against the conveyor belt 23, and the slag on the conveyor belt 23 is vibrated and spread, that is, a second uniform paving is performed.

[0049] The material crushing mechanism 5 includes a crushing bracket 40, which is fixed above the discharge end of the conveyor chain base 6. A collecting hopper 45 is fixed inside the crushing bracket 40, and the collecting hopper 45 is located below the chain plate 13. A conveying pipe 41 is fixed at the lower end of the collecting hopper 45, and a discharge tee 42 is fixed at the end of the conveying pipe 41. The internal rotation of the discharge tee 42 and the conveying pipe 41 is provided with a conveying screw 43. A dual-axis motor 48 is fixed on the crushing bracket 40, and one side output shaft of the dual-axis motor 48 is fixedly connected to the conveying screw 43. The internal rotation of the collecting hopper 45 is provided with a striking rod 44, and an acceleration pulley pair 47 is provided between the striking rod 44 and the other side output shaft of the dual-axis motor 48. A number of striking whip ropes 46 are detachably provided on the striking rod 44, and the other connecting end of the discharge tee 42 is connected to an external induced draft fan.

[0050] The dried material falls into the collecting hopper 45, and the output shaft on the other side of the dual-axis motor 48 drives the striking rod 44 to rotate rapidly through the acceleration pulley pair 47. The striking rod 44 drives several striking whip ropes 46 on it to rotate rapidly, hitting and crushing the material. The crushed material falls into the conveying pipe 41, and the output shaft on one side of the dual-axis motor 48 drives the conveying screw rod 43 to rotate, and conveys the logistics to the discharge tee 42. The external induced draft fan sucks the crushed material out from the other connecting end of the discharge tee 42 and introduces it into the crusher for crushing.

[0051] The working principle of the utility model is as follows: During the production and processing of the solid drag reducer for fracturing, a rake dryer is used for the rake dry treatment. The wet slag after raking falls into the vibrating hopper 31. The vibrating motor 37 vibrates, driving the vibrating frame 36 to vibrate on the four fixed bases 35 through the vibrating springs 33, thereby driving the vibrating hopper 31 and the plurality of radial diverter ribs 32 above it to vibrate. The slag is evenly spread through the diverter ribs 32, and the material falls onto the conveyor crawler 23. The baffle plate 2 To prevent the slag from overflowing, the output shaft of the conveying motor 22 drives one of the rotating shafts of the conveying crawler 23 to rotate. During the conveying process, the vibrating frame 36 simultaneously drives the paving base plate 38 to vibrate. The paving base plate 38 drives the two articulated frames 39 and a number of evenly spaced paving rods 34 above them to vibrate. The lower ends of the paving rods 34 come into contact with the conveying crawler 23, vibrating and paving the slag on the conveying crawler 23, i.e., performing secondary uniform paving. The slag is then transported and falls onto two symmetrically arranged prying rollers 28.

[0052] The other rotating shaft of the conveyor belt 23 drives the material-discharging roller 28 on one side to rotate in the same direction through the second pulley pair 30. The other rotating shaft of the conveyor belt 23 drives the gear shaft to rotate in the opposite direction through the reversing gear pair 26. The gear shaft raises the first pulley pair 27 to drive the material-discharging roller 28 on the other side to rotate. The two material-discharging rollers 28 rotate in opposite directions, and the material is evenly spread on the two material-discharging rollers 28 for three times, and then evenly spread on the chain plate 13.

[0053] The output shaft of the conveyor chain motor drives the conveyor sprocket pair 11 to move, thereby driving the chain plates 13 on the two conveyor sprocket pairs 11 to move, that is, driving the wet slag to move inside the drying oven 12;

[0054] The air inlet end of the fan 9 is connected to an external hot air furnace, which draws hot air into the hot air long box 7, and blows it into the drying oven 12 through a plurality of outlet branch pipes 10 and a plurality of outlet branch pipes 2-15. The air is evenly blown onto the upper and lower ends of the chain plate 13 to dry the wet slag with hot air. The air valve 8 controls the ventilation volume.

[0055] The thermal oil furnace injects hot oil into the thermal oil main pipe 17 through the oil inlet valve 16, and then enters several thermal oil branch pipes 18. By cooperating with the hot air mechanism 3, heat exchange is carried out to increase the temperature inside the oven 12. The upper and lower oil return pipes 20 are respectively located on the upper and lower sides of the chain plate 13 to ensure the temperature requirement at the chain plate 13. The oil inlet valve 16 and the thermal oil valve 19 cooperate to adjust the oil volume. The cold oil after heat exchange then flows back to the thermal oil furnace through the oil return pipe 20;

[0056] The dried material falls into the collecting hopper 45, and the output shaft on the other side of the dual-axis motor 48 drives the striking rod 44 to rotate rapidly through the acceleration pulley pair 47. The striking rod 44 drives several striking whip ropes 46 on it to rotate rapidly, hitting and crushing the material. The crushed material falls into the conveying pipe 41, and the output shaft on one side of the dual-axis motor 48 drives the conveying screw rod 43 to rotate, and conveys the logistics to the discharge tee 42. The external induced draft fan sucks the crushed material out from the other connecting end of the discharge tee 42 and introduces it into the crusher for crushing. The cleaning scraper roller scrapes the surface of the chain plate 13 at the feed end of the drying conveyor chain 2 to prevent the material from sticking.

[0057] In summary, the damp slag is evenly spread three times by the vibrating conveying mechanism 1, achieving more uniform spreading and facilitating rapid drying.

[0058] The drying conveyor chain 2 cooperates with the hot air mechanism 3 to achieve hot air drying of the wet slag. The drying conveyor chain 2 cooperates with the hot oil circulation mechanism 4 to increase the internal temperature of the drying oven 12 to ensure the temperature requirement at the chain plate 13. At the same time, the hot air mechanism 3 cooperates with the hot oil circulation mechanism 4 to form hot air heat exchange and quickly dry the wet slag.

[0059] The dried material is struck and crushed by the material crushing mechanism 5 to avoid the material from sticking and agglomerating, thereby achieving the functions of effective material crushing and stable conveying.

[0060] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A drying and dehumidifying device for producing solid drag reducers for fracturing, characterized in that: The invention comprises a drying conveyor chain (2), wherein a vibrating conveying mechanism (1) is provided at the feed end of the drying conveyor chain (2), a material crushing mechanism (5) is provided at the discharge end of the vibrating conveyor mechanism (1), a hot air mechanism (3) and a hot oil circulation mechanism (4) are provided on the drying conveyor chain (2), and a dust-cleaning scraper is also provided at the feed end of the drying conveyor chain (2).

2. A drying and dehumidifying device for producing solid drag reducers for fracturing according to claim 1, characterized in that: The drying conveyor chain (2) includes a conveyor chain base (6), a drying oven (12) and a conveyor chain motor are fixed on the conveyor chain base (6), two symmetrically arranged conveyor sprocket pairs (11) are provided inside the drying oven (12), the output shaft of the conveyor chain motor is connected to the rotating shaft of the conveyor sprocket pair (11), a plurality of chain plates (13) are provided on the two conveyor sprocket pairs (11), and a dust cleaning scraper roller abuts against the lower end surface of the chain plate (13). A plurality of exhaust hoods (14) are provided at the upper end of the drying oven (12), and the exhaust hoods (14) are connected to an external exhaust fan.

3. A drying and dehumidifying device for producing solid drag reducers for fracturing according to claim 2, characterized in that: The hot air mechanism (3) includes a hot air long box (7) and an air guide fan (9), the hot air long box (7) and the air guide fan (9) are fixed to the upper end of the conveyor chain base (6), the air inlet end of the air guide fan (9) is connected to the external hot air furnace, the air outlet end of the air guide fan (9) is connected to the hot air long box (7), the upper end of the hot air long box (7) is connected to a plurality of air outlet branch pipes 1 (10) and a plurality of air outlet branch pipes 2 (15), the air outlet branch pipes 1 (10) and 2 (15) are both provided with air valves (8), the air outlet of the air outlet branch pipe 1 (10) is located at the lower end of the chain plate (13), and the air outlet of the air outlet branch pipe 2 (15) is located at the upper end of the chain plate (13).

4. A drying and dehumidifying device for producing solid drag reducers for fracturing according to claim 3, characterized in that: The hot oil circulation mechanism (4) includes a heat transfer oil main pipe (17), which is fixed to the oven (12). An oil inlet valve (16) is provided on the heat transfer oil main pipe (17), which is connected to an external heat transfer oil furnace. A plurality of heat transfer oil branch pipes (18) are connected to the heat transfer oil main pipe (17), and two upper and lower distributed return oil pipes (20) are provided on the heat transfer oil branch pipes (18). The upper and lower distributed return oil pipes (20) are respectively located on the upper and lower sides of the chain plate (13), and the return oil pipes (20) pass through the oven (12). The oil inlet valve (16) and the return oil pipe (20) are both connected to the external heat transfer oil furnace, and the return oil pipes (20) are both provided with heat transfer oil valves (19).

5. A drying and dehumidifying device for producing solid drag reducers for fracturing according to claim 4, characterized in that: The vibrating conveying mechanism (1) includes a bracket (21), a baffle plate (24), a conveying crawler (23) and a conveying motor (22) are provided on the bracket (21), the output shaft of the conveying motor (22) is connected to one of the rotating shafts of the conveying crawler (23), the baffle plate (24) contacts the upper end surface of the conveying crawler (23), and a vibrating diversion component (25) is provided at the upper end of the baffle plate (24). A support frame (29) is fixed to the middle part of the lower end of the bracket (21), and two symmetrically arranged material-picking rollers (28) are rotatably provided between the support frame (29) and the bracket (21). , two feeding rollers (28) are respectively located on both sides of the support frame (29), the feeding roller (28) is located below the discharge end of the conveyor crawler (23) and above the feed end of the chain plate (13), a second pulley pair (30) is provided between the feeding roller (28) on one side and one end of the other rotating shaft of the conveyor crawler (23), a gear shaft is rotatably provided on the bracket (21), a reversing gear pair (26) is provided between the gear shaft and the other end of the other rotating shaft of the conveyor crawler (23), and a first pulley pair (27) is provided between the gear shaft and the feeding roller (28) on the other side.

6. A drying and dehumidifying device for producing solid drag reducers for fracturing according to claim 5, characterized in that: The vibration diversion assembly (25) includes a vibration frame (36) and four fixed bases (35), a vibration spring (33) is provided between the vibration frame (36) and the four fixed bases (35), the four fixed bases (35) are symmetrical in pairs, and the fixed bases (35) are respectively fixed on the enclosure plate (24), a tilted vibration hopper (31) is fixed on the upper end of the vibration frame (36), and a plurality of radial diversion ribs (32) are provided on the vibration hopper (31), a vibration motor (37) is fixed on the side of the vibration frame (36), a flat base plate (38) is fixed on the middle part of the lower end of the vibration frame (36), and two symmetrically arranged articulated frames (39) are fixed on the flat base plate (38), and a plurality of evenly spaced flat material supporting rods (34) are provided between the two articulated frames (39), and the lower ends of the flat material supporting rods (34) are in contact with the conveyor belt (23).

7. A drying and dehumidifying device for producing solid drag reducers for fracturing according to claim 6, characterized in that: The material crushing mechanism (5) includes a crushing bracket (40), which is fixed above the discharge end of the conveyor chain base (6). A collecting hopper (45) is fixed inside the crushing bracket (40), and the collecting hopper (45) is located below the chain plate (13). A conveying pipe (41) is fixed at the lower end of the collecting hopper (45), and a discharge tee (42) is fixed at the end of the conveying pipe (41). The discharge tee (42) and the conveying pipe (41) are internally rotated with a conveying screw ( 43), a double-axis motor (48) is fixed on the crushing bracket (40), one side output shaft of the double-axis motor (48) is fixedly connected to the conveying screw rod (43), the internal rotation of the collecting hopper (45) is provided with a striking rod (44), an acceleration pulley pair (47) is provided between the striking rod (44) and the other side output shaft of the double-axis motor (48), a plurality of striking whip ropes (46) are detachably provided on the striking rod (44), and the other connection end of the discharge tee (42) is connected to an external induced draft fan.

Images