A stirring paddle for a tank reactor for strengthening the thermal cracking of waste plastics to produce oil

Abstract

The present invention relates to the technical field of stirring paddles, and provides a tank reactor stirring paddle for strengthening waste plastic thermal cracking oil production, comprising a bracket; an inner shaft, longitudinally arranged inside the tank reactor; an outer cylinder, sleeved on the upper end of the inner shaft; a guide ring, transversely arranged inside the tank reactor; a blade frame, installed on the outer side of the inner shaft and the outer side of the outer cylinder; a first driving device, used to drive the inner shaft and the outer cylinder to rotate; and a second driving device, including a ratchet, a slider, a movable rod, a first pawl, a second pawl, a first tension spring and a second tension spring, in a first working state, the slider is away from the ratchet, the first pawl slips on the ratchet, and the second pawl drives the ratchet to rotate, in a second working state, the slider is close to the ratchet, the second pawl slips on the ratchet, and the first pawl drives the ratchet to rotate. The present invention provides a tank reactor stirring paddle for strengthening waste plastic thermal cracking oil production, which has a better stirring effect on the plastic melt in the reactor.

Description

Technical Field

[0001] The invention relates to the technical field of stirring paddles, and in particular to a stirring paddle for a tank reactor for strengthening the thermal cracking of waste plastics to produce oil. Background Art

[0002] At present, my country mainly uses tank reactors for the cracking of waste plastics to produce fuel oil. Due to the poor thermal conductivity of plastics, an extruder is usually used to heat the plastic to a molten state before feeding it into a reactor for thermal cracking to improve the uniformity of heat and mass transfer. At this stage, a stirring paddle is still needed to keep the plastic temperature uniform.

[0003] The existing stirring paddle has a poor stirring effect on the plastic melt in the reactor. Summary of the invention

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a tank reactor stirring paddle for strengthening the thermal cracking of waste plastics to produce oil, so that the stirring effect of the plastic melt in the reactor is better.

[0005] In order to achieve the above object, the present invention is implemented by the following technical scheme: a stirring paddle of a tank reactor for strengthening the thermal cracking of waste plastics to produce oil, comprising:

[0006] A bracket, wherein the bracket is fixedly arranged on the top of the tank reactor;

[0007] An inner shaft, the inner shaft is longitudinally arranged inside the tank reactor, the upper end of the inner shaft is rotatably connected to the bracket, and the lower end of the inner shaft is rotatably connected to the bottom of the tank reactor;

[0008] An outer cylinder, wherein the outer cylinder is sleeved on the outer side of the upper end of the inner shaft, and the upper end of the outer cylinder is rotatably connected to the bracket;

[0009] A guide ring, the guide ring is arranged in the interior of the tank reactor in a transverse direction, the outer side of the guide ring is fixedly connected to the inner wall of the tank reactor, and the inner side of the guide ring has a plurality of convex parts that are arranged at intervals along the circumferential direction and convex inwardly;

[0010] A blade frame, wherein a plurality of blade frames are respectively mounted on the outside of the inner shaft and the outside of the outer cylinder, a plurality of longitudinally arranged blade shafts are mounted in each blade frame, the blade shafts are rotatably connected to the blade frame, a plurality of blades are mounted on the blade shafts, a gear is mounted on the upper end of each blade shaft, and the gears on two adjacent blade shafts are meshed;

[0011] a first driving device, the first driving device being disposed in the bracket and configured to drive the inner shaft and the outer cylinder to rotate in opposite directions; and

[0012] A second driving device, wherein the plurality of the second driving devices are respectively arranged at the upper ends of the plurality of blade frames in a one-to-one correspondence, the second driving device comprises a ratchet, a slider, a movable rod, a first pawl, a second pawl, a first tension spring and a second tension spring, the ratchet is fixedly mounted on the upper end of one of the blade shafts, the slider is arranged at the upper end of the blade frame and can slide on the blade frame, one end of the movable rod is fixedly connected to the slider, and the other end abuts against the inner side of the guide ring, the first pawl and the second pawl are respectively arranged on both sides of the blade frame, and one end of the first pawl and the second pawl are both The slider is rotatably connected and the other end is in contact with the ratchet. The first tension spring is sleeved on the movable rod. The first tension spring makes the slider tend to move away from the ratchet. The two ends of the second tension spring are respectively connected to the first pawl and the second pawl. The second driving device has at least two working states. In the first working state, the slider is away from the ratchet, the first pawl slips on the ratchet, and the second pawl drives the ratchet to rotate. In the second working state, the slider is close to the ratchet, the second pawl slips on the ratchet, and the first pawl drives the ratchet to rotate.

[0013] Further, the first driving device includes a first bevel gear, a second bevel gear, a driving shaft and a third bevel gear, the first bevel gear is installed on the upper end of the inner shaft, the second bevel gear is installed on the upper end of the outer cylinder, the driving shaft is arranged in the transverse direction, the third bevel gear is installed on the driving shaft, the third bevel gear is located between the first bevel gear and the second bevel gear, and is meshed with both the first bevel gear and the second bevel gear.

[0014] Furthermore, it also includes a telescopic rod arranged in the second tension spring, and two ends of the telescopic rod are respectively fixedly connected to the first pawl and the second pawl.

[0015] Furthermore, it also includes a bearing installed between the inner shaft and the outer cylinder, the inner ring of the bearing is fixedly connected to the inner shaft, and the outer ring is fixedly connected to the outer cylinder.

[0016] Furthermore, a universal ball is installed on the other end of the movable rod, and the universal ball rolls on the inner side of the guide ring.

[0017] Furthermore, a plurality of guide holes are formed on the blade.

[0018] Beneficial effects of the present invention: The present invention provides a tank reactor stirring paddle for strengthening waste plastic thermal cracking oil production. When the first driving device is working, the inner shaft and the outer cylinder will rotate in opposite directions under the transmission of the bevel gear structure, thereby driving the paddle frame on the inner shaft and the outer cylinder to rotate. When the paddle frame rotates, it will drive the second driving device to work. At this time, the movable rod will drive the slider to reciprocate, and the ratchet will rotate through the first pawl and the second pawl. The intermittent movement of the ratchet structure will drive the intermittent rotation of the paddle, so that the paddle has a better stirring effect on the plastic melt in the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the cross-sectional structure of the invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure in the AA direction;

[0021] Figure 3 for Figure 2 The enlarged structural diagram of the middle A part;

[0022] Figure 4 is a schematic diagram of the structure of the blade frame;

[0023] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of part B in the middle.

[0024] Figure numerals: 10- bracket, 20- inner shaft, 30- outer cylinder, 40- guide ring, 41- boss, 50- blade frame, 51- blade shaft, 52- blade, 521- guide hole, 53- gear, 54- transmission wheel, 60- first driving device, 61- first bevel gear, 62- second bevel gear, 63- driving shaft, 64- third bevel gear, 70- second driving device, 71- ratchet, 72- slider, 73- movable rod, 731- universal ball, 74- first ratchet, 75- second ratchet, 76- first tension spring, 77- second tension spring, 80- trough reactor, 90- bearing. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] In this application, unless otherwise clearly specified and limited, the terms "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "horizontal", "top", "bottom", "up", "down", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0029] like Figure 1-5 As shown, the present invention provides a tank reactor stirring impeller for strengthening waste plastic thermal cracking oil production, including a bracket 10, an inner shaft 20, an outer cylinder 30, a guide ring 40, a blade frame 50, a first drive device 60 and a second drive device 70.

[0030] The bracket 10 is fixedly arranged on the top of the tank reactor 80. The inner shaft 20 is arranged longitudinally inside the tank reactor 80, the upper end of the inner shaft 20 is rotatably connected to the bracket 10, and the lower end is rotatably connected to the bottom of the tank reactor 80. The upper end of the outer cylinder 30 is sleeved on the outer side of the upper end of the inner shaft 20 and is rotatably connected to the bracket 10.

[0031] The guide ring 40 is disposed laterally inside the tank reactor 80 , the outer side of the guide ring 40 is fixedly connected to the inner wall of the tank reactor 80 , and the inner side of the guide ring 40 has a plurality of arc-shaped protrusions 41 that are arranged at intervals along the circumferential direction and protrude inward.

[0032] A plurality of paddle frames 50 are respectively installed on the outside of the inner shaft 20 and the outside of the outer cylinder 30, and a plurality of longitudinally arranged paddle shafts 51 are installed in each paddle frame 50. The paddle shaft 51 is rotatably connected to the paddle frame 50, and a plurality of paddles 52 are installed on the paddle shaft 51, and the paddles 52 can further rotate the plastic melt inside the reactor. A gear 53 is fixedly installed on the upper end of each paddle shaft 51, and a transmission gear 54 is arranged between the gears 53 on two adjacent paddle shafts 51, and the transmission gear 54 is meshed with the adjacent gear 53. When one paddle shaft 51 rotates, the adjacent paddle shaft 51 can be driven to rotate through the transmission gear 54.

[0033] The first driving device 60 is disposed in the bracket 10 and is used to drive the inner shaft 20 and the outer cylinder 30 to rotate in opposite directions, so that the paddle frame 50 on the inner shaft 20 and the paddle frame 50 on the outer cylinder 30 rotate in opposite directions. Therefore, when the first driving device 60 is working, the stirring paddles disturb the plastic melt at the upper end and the lower end of the reactor in opposite directions, thereby improving the stirring effect on the plastic melt in the reactor.

[0034] The second driving device 70 is respectively arranged at the upper ends of the plurality of blade frames 50 in a one-to-one correspondence. Specifically, the second driving device 70 includes a ratchet 71, a slider 72, a movable rod 73, a first pawl 74, a second pawl 75, a first tension spring 76 and a second tension spring 77. The ratchet 71 is fixedly mounted on the upper end of one of the blade shafts 51. The slider 72 is arranged at the upper end of the blade frame 50 and can slide on the blade frame 50. One end of the movable rod 73 is fixedly connected to the slider 72, and the other end abuts against the inner side of the guide ring 40. The first pawl 74 and the second pawl 75 are respectively arranged on both sides of the blade frame 50, and one end of the first pawl 74 and the second pawl 75 are both rotatably connected to the slider 72, and the other end abuts against the ratchet 71. Preferably, the above-mentioned other end of the first pawl 74 is a conventional pawl structure, and the above-mentioned other end of the second pawl 75 is a hook structure.

[0035] The first tension spring 76 is sleeved on the movable rod 73, and the first tension spring 76 makes the slider 72 have a tendency to move away from the ratchet 71. In this embodiment, one end of the first tension spring 76 is connected to the slider 72, and the other end is connected to the outermost side of the blade frame 50. The two ends of the second tension spring 77 are respectively connected to the first pawl 74 and the second pawl 75, and the second tension spring 77 makes the first pawl 74 and the second pawl 75 have a tendency to move closer to each other, so that the first pawl 74 and the second pawl 75 can work in coordination with each other.

[0036] In this embodiment, the second driving device 70 has at least two working states. In the first working state, the movable rod 73 is located in the groove of the guide ring 40, and the first tension spring 76 makes the slider 72 away from the ratchet 71. The slider 72 drives the first pawl 74 and the second pawl 75 away from the ratchet 71. At this time, the hook structure of the second pawl 75 pulls the ratchet 71 to rotate, and the first pawl 74 slips on the ratchet 71. In the second working state, the movable rod 73 is located on the protrusion 41 of the guide ring 40, and the protrusion 41 pushes the slider 72 close to the ratchet 71. The slider 72 drives the first pawl 74 and the second pawl 75 close to the ratchet 71. At this time, the first pawl 74 drives the ratchet 71 to rotate, and the second pawl 75 slips on the ratchet 71. The raised portions 41 arranged at intervals on the inner side of the guide ring 40 will cause the ratchet 71 structure to perform intermittent movement, so that when the blade frame 50 rotates, the blade shaft 51 on the blade frame 50 can also drive the blade 52 to perform intermittent rotational movement, thereby increasing the active disturbance of the plastic melt in the reactor by the blade 52, thereby further improving the stirring effect on the plastic melt in the reactor.

[0037] In one embodiment, the first driving device 60 is installed in the bracket 10. Specifically, the first driving device 60 includes a first bevel gear 61, a second bevel gear 62, a driving shaft 63 and a third bevel gear 64. The first bevel gear 61 is installed at the upper end of the inner shaft 20, and the second bevel gear 62 is installed at the upper end of the outer cylinder 30. The driving shaft 63 is arranged in the transverse direction, and the driving shaft 63 is driven by a motor. The third bevel gear 64 is installed on the driving shaft 63, and the third bevel gear 64 is located between the first bevel gear 61 and the second bevel gear 62, and is meshed with the first bevel gear 61 and the second bevel gear 62.

[0038] When the motor is working, the third bevel gear 64 drives the first bevel gear 61 and the second bevel gear 62 to rotate in opposite directions, thereby driving the inner shaft 20 and the outer cylinder 30 to rotate in opposite directions. When the motor is reversed, the rotation direction of the inner shaft 20 and the outer cylinder 30 can also be changed. This driving device 80 has a simple structure and low cost.

[0039] In one embodiment, a telescopic rod is further included in the second tension spring 77, and the two ends of the telescopic rod are respectively fixedly connected to the first pawl 74 and the second pawl 75. When the slider 72 approaches or moves away from the ratchet wheel 71, the first pawl 74 and the second pawl 75 will approach or move away from each other. The telescopic rod is arranged in the second tension spring 77, which will limit the position of the second tension spring 77, making the expansion and contraction of the second tension spring 77 more stable, thereby making the first pawl 74 and the second pawl 75 better in coordination during operation.

[0040] In one embodiment, a bearing 90 is further included, which is installed between the inner shaft 20 and the outer cylinder 30. The inner ring of the bearing 90 is fixedly connected to the inner shaft 20, and the outer ring is fixedly connected to the outer cylinder 30. The design of the bearing 90 can reduce the friction between the inner shaft 20 and the outer cylinder 30, which is conducive to keeping the stirring paddle stable during operation.

[0041] In one embodiment, a universal ball 731 is installed at the other end of the movable rod 73, and the universal ball 731 rolls on the inner side of the guide ring 40. The universal ball 731 always keeps in contact with the inner side of the guide ring 40 under the action of the first tension spring 76, and the setting of the universal ball 731 can reduce the friction between the movable rod 73 and the guide ring 40, thereby reducing the wear and tear between the movable rod 73 and the guide ring 40.

[0042] In one embodiment, a plurality of guide holes 521 are formed on the paddle 52. When the paddle 52 rotates, the guide holes 521 can further increase the disturbance of the plastic melt by the stirring paddle, and the plastic melt can pass through the guide holes 521, thereby reducing the resistance between the paddle 52 and the plastic melt when the paddle 52 rotates, facilitating the rotation of the entire stirring paddle.

[0043] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A tank reactor stirring paddle for strengthening the thermal cracking of waste plastics to produce oil, characterized by: include: A bracket, wherein the bracket is fixedly arranged on the top of the tank reactor; An inner shaft, the inner shaft is longitudinally arranged inside the tank reactor, the upper end of the inner shaft is rotatably connected to the bracket, and the lower end of the inner shaft is rotatably connected to the bottom of the tank reactor; An outer cylinder, wherein the outer cylinder is sleeved on the outer side of the upper end of the inner shaft, and the upper end of the outer cylinder is rotatably connected to the bracket; A guide ring, the guide ring is arranged in the interior of the tank reactor in a transverse direction, the outer side of the guide ring is fixedly connected to the inner wall of the tank reactor, and the inner side of the guide ring has a plurality of convex parts that are arranged at intervals along the circumferential direction and convex inwardly; A blade frame, wherein a plurality of blade frames are respectively mounted on the outside of the inner shaft and the outside of the outer cylinder, a plurality of longitudinally arranged blade shafts are mounted in each blade frame, the blade shafts are rotatably connected to the blade frame, a plurality of blades are mounted on the blade shafts, a gear is mounted on the upper end of each blade shaft, and the gears on two adjacent blade shafts are meshed; a first driving device, which is disposed in the bracket and is used to drive the inner shaft and the outer cylinder to rotate in opposite directions; as well as A second driving device, wherein the plurality of the second driving devices are respectively arranged at the upper ends of the plurality of blade frames in a one-to-one correspondence, the second driving device comprises a ratchet, a slider, a movable rod, a first pawl, a second pawl, a first tension spring and a second tension spring, the ratchet is fixedly mounted on the upper end of one of the blade shafts, the slider is arranged at the upper end of the blade frame and can slide on the blade frame, one end of the movable rod is fixedly connected to the slider, and the other end abuts against the inner side of the guide ring, the first pawl and the second pawl are respectively arranged on both sides of the blade frame, and one end of the first pawl and the second pawl are both The slider is rotatably connected and the other end is in contact with the ratchet. The first tension spring is sleeved on the movable rod. The first tension spring makes the slider tend to move away from the ratchet. The two ends of the second tension spring are respectively connected to the first pawl and the second pawl. The second driving device has at least two working states. In the first working state, the slider moves away from the ratchet, the first pawl slips on the ratchet, and the second pawl drives the ratchet to rotate. In the second working state, the slider approaches the ratchet, the second pawl slips on the ratchet, and the first pawl drives the ratchet to rotate. The first driving device comprises a first bevel gear, a second bevel gear, a driving shaft and a third bevel gear, wherein the first bevel gear is mounted on the upper end of the inner shaft, the second bevel gear is mounted on the upper end of the outer cylinder, the driving shaft is arranged in the transverse direction, the third bevel gear is mounted on the driving shaft, the third bevel gear is located between the first bevel gear and the second bevel gear, and is meshed with both the first bevel gear and the second bevel gear; It also includes a telescopic rod arranged in the second tension spring, and two ends of the telescopic rod are respectively fixedly connected to the first pawl and the second pawl.

2. The stirring blade of a tank reactor for strengthening the thermal cracking of waste plastics to produce oil according to claim 1, characterized in that: It also includes a bearing installed between the inner shaft and the outer cylinder, wherein the inner ring of the bearing is fixedly connected to the inner shaft, and the outer ring of the bearing is fixedly connected to the outer cylinder.

3. The stirring blade of a tank reactor for strengthening the thermal cracking of waste plastics to produce oil according to claim 1, characterized in that: A universal ball is installed on the other end of the movable rod, and the universal ball rolls on the inner side of the guide ring.

4. The stirring blade of a tank reactor for strengthening the thermal cracking of waste plastics to produce oil according to claim 1, characterized in that: A plurality of flow guide holes are formed on the blade.

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