Anhydrous piperazine flaking device and flaking method thereof

Abstract

The invention discloses an anhydrous piperazine flaking device and a flaking method thereof, and relates to the technical field of auxiliary production equipment. A housing is included; the rotary drum is positioned in the shell; the primary feeding hopper is positioned on one side of the rotary drum; the secondary feeding hopper is located on the side, close to the primary feeding hopper, of the rotary drum, and the position of the secondary feeding hopper is higher than that of the primary feeding hopper; a plurality of groups of runners I of which the flow directions are gradually close to the outer surface of the rotary drum are arranged on the primary feeding hopper side by side, and a plurality of groups of runners II of which the flow directions are gradually close to the outer surface of the rotary drum are arranged on the secondary feeding hopper side by side; according to the anhydrous piperazine flaking device and the flaking method thereof, the anhydrous piperazine formed on the rotary drum can be discontinuously arranged at intervals, so that the stress of the anhydrous piperazine in the axial direction of the rotary drum is reduced, material scraping is convenient, the anhydrous piperazine is discontinuously arranged at intervals on the rotary drum, the size of the scraped anhydrous piperazine is smaller, and the flaking efficiency is improved. And the formed sheet structure is relatively fine.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliaries production equipment, and in particular to an anhydrous piperazine flaking device and a flaking method thereof. Background Art

[0002] Anhydrous piperazine, also known as bis-dimethylamine, is an important raw material in the chemical industry. Its flaking process is achieved through a condensation slicing machine. The condensation slicing machine rotates a heated liquid raw material through a stainless steel internal cooling roller in the material tank of the equipment, and adheres it to the adjustable slicing knife device at the front to slice it. Thus, the liquid is converted into solid sheet material through the cooling blade, and raw materials that are cooled into crystals can also be sliced.

[0003] The patent with application number CN201220620425.9 proposes an anhydrous piperazine flaker, which sets bulges on the surface of the drum. When flaking piperazine liquid, the flaking material reduces the acting force with the drum surface under its own shrinkage and deformation, is easy to fall off, reduces the wear of the scraper, improves the service life of the scraper, and also improves the working efficiency of flaking.

[0004] However, after piperazine is cooled and formed, its own stress is relatively large, resulting in some relatively large-sized sheet structures being cut out, which affects subsequent use. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides an anhydrous piperazine flaking device and a flaking method thereof, which solve the problem that after piperazine is cooled and formed in the prior art, its own stress is relatively large, resulting in some relatively large-sized sheet structures being cut out, which affects subsequent use.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: An anhydrous piperazine flaking device, comprising: A housing; A drum, which is located inside the housing; A primary feeding hopper, which is located on one side of the drum; A secondary feeding hopper, which is located on the side of the drum close to the primary feeding hopper, and the position of the secondary feeding hopper is higher than that of the primary feeding hopper; There are multiple groups of channels one arranged side by side on the primary feeding hopper, and the flow direction is gradually approaching the outer surface of the drum. There are multiple groups of channels two arranged side by side on the secondary feeding hopper, and the flow direction is gradually approaching the outer surface of the drum. The channels one and the channels two are arranged alternately, and there is a gap between the channels one and the channels two in the radial projection direction of the drum, so that the anhydrous piperazine on the outer surface of the drum is arranged at intervals and discontinuously in the axial direction of the drum.

[0007] Furthermore, the primary feeding hopper further includes a first hopper body which is closely attached to the outer surface of the rotary drum. The side of the first hopper body close to the rotary drum is an open side. On the upper surface of the first hopper body, partition blocks one are arranged at intervals on the side close to the open side. The first flow channel is formed by the space between two adjacent partition blocks one.

[0008] Furthermore, the secondary feeding hopper further includes a second hopper body which is closely attached to the outer surface of the rotary drum. The side of the second hopper body close to the rotary drum is an open side. On the upper surface of the second hopper body, partition blocks two are arranged at intervals on the side close to the open side. The second flow channel is formed by the space between two adjacent partition blocks two. A liquid distribution plate is fixedly arranged above the second hopper body.

[0009] Furthermore, a second scraper assembly and a first scraper assembly are arranged on one side of the rotary drum. The position of the second scraper assembly is higher than that of the first scraper assembly. An empty area corresponding to the second flow channel is arranged on the first scraper assembly, so that the first scraper assembly can scrape off piperazine from the first flow channel on the outer surface of the rotary drum. The second scraper assembly is a complete knife, which is used to scrape off piperazine from the second flow channel on the outer surface of the rotary drum.

[0010] Furthermore, the first scraper assembly includes a knife body, and the empty area is located on the knife body. A knife seat is arranged on the side of the knife body away from the rotary drum. Knife shafts are fixedly arranged at both ends of the knife seat. A connecting rod is arranged at the end of the knife shaft away from the knife seat. The other end of the connecting rod is hinged with an adjusting bolt, and the adjusting bolt is rotationally installed on the frame through a thread.

[0011] Furthermore, the rotary drum includes: An inner cylinder, with integral end plates provided at both ends of the inner cylinder. End holes are evenly arranged on the end plates. Strip-shaped elastic plates are arranged around the outer periphery of the inner cylinder. L-shaped rods are fixedly arranged at both ends of the strip-shaped elastic plates, and the L-shaped rods are inserted into the end holes. The anhydrous piperazine flaking device further includes an adjusting assembly for expanding a single strip-shaped elastic plate outward.

[0012] Furthermore, the adjusting assembly includes: A straightening adjusting disc, which is located between the L-shaped rod and the end plate. On the side of the straightening adjusting disc close to the L-shaped rod, there are a second convex part and a second concave part. The second concave part is in front of the first scraper assembly on the rotation path of the rotary drum. A bending adjusting disc, which is located on the side of the L-shaped rod away from the straightening adjusting disc. On the side of the bending adjusting disc close to the L-shaped rod, there are a first convex part and a first concave part. The position of the first convex part is opposite to that of the second concave part. Before the strip-shaped elastic plate reaches the first scraper assembly, it can be slightly bent under the pressure of the first convex part, forming a state where piperazine is pre-separated from the strip-shaped elastic plate; when the strip-shaped elastic plate is in the area where the first convex part is not located, it is straightened under the pressure of the second convex part, forming the straight state required for feeding and scraping.

[0013] Furthermore, the bending adjustment disk is fixed on the inner wall of the housing by bolts; A positioning bolt is threadedly connected to the bending adjustment disk, and the other end of the positioning bolt is rotatably installed on the straightening adjustment disk. One end of the positioning bolt close to the bending adjustment disk is exposed outside the housing; When the positioning bolt is rotated, the straightening adjustment disk can be pulled to adjust the force required to straighten the strip-shaped elastic plate.

[0014] Furthermore, hollow rotating shafts are fixed at both ends of the inner cylinder. One end of the hollow rotating shaft is connected to the water inlet pipe, and the other end is connected to the drain pipe. A cooling pipeline is provided inside the inner cylinder.

[0015] On the other hand, the present invention also provides a method for forming anhydrous piperazine flakes, which is applicable to the above-mentioned anhydrous piperazine flaking device, and includes the following steps: Step 1: Feed materials to the outer surface of the rotating drum in sequence through the primary hopper and the secondary hopper, so that the piperazine on the rotating drum is arranged at intervals and discontinuously in the axial direction of the rotating drum; Step 2: The cooling pipeline inside the rotating drum cools the piperazine on the outer surface of the rotating drum to form piperazine flakes; Step 3: The piperazine flakes on the strip-shaped elastic plate are pre-separated from the strip-shaped elastic plate by the pressure of the first convex part before reaching the first scraper assembly; Step 4: The pre-separated piperazine is scraped off the strip-shaped elastic plate by the first scraper assembly and the second scraper assembly in sequence, and then discharged.

[0016] The present invention has the following beneficial effects: (1) For the anhydrous piperazine flaking device and its flaking method, the anhydrous piperazine formed on the rotating drum can be arranged at intervals and discontinuously, thereby reducing the stress of anhydrous piperazine itself along the axial direction of the rotating drum, facilitating scraping. And because the anhydrous piperazine is arranged at intervals and discontinuously on the rotating drum, its volume after being scraped off is smaller, and the formed flaky structure is relatively finer, which is beneficial for later use.

[0017] (2) The rotating drum of the anhydrous piperazine flaking device and its flaking method is made of a plurality of strip-shaped elastic plates and is equipped with corresponding adjustment components, so that the piperazine is pre-separated from the rotating drum before being scraped off, thereby avoiding the situation where it is difficult to scrape clean due to the adhesion of piperazine to the rotating drum.

[0018] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. Description of the Drawings

[0019] Figure 1 is the external view of the present invention; Figure 2 is the schematic internal structure diagram of the outer shell in the first embodiment of the present invention; Figure 3 is the distribution diagram of the secondary hopper, primary hopper, first scraper assembly and second scraper assembly in the first embodiment of the present invention; Figure 4 is the relative position diagram of the secondary hopper and the primary hopper of the present invention; Figure 5 is the bottom view of the primary hopper of the present invention; Figure 6 is the bottom view of the secondary hopper of the present invention; Figure 7 is the sectional view of the secondary hopper of the present invention; Figure 8 is the distribution diagram of piperazine formed by the secondary hopper and the primary hopper on the rotating drum of the present invention; Figure 9 is the schematic structure diagram of the first scraper assembly of the present invention; Figure 10 is the schematic internal structure diagram of the outer shell in the second embodiment of the present invention; Figure 11 is the relative position diagram of the secondary hopper, primary hopper and rotating drum in the second embodiment of the present invention; Figure 12 is the distribution diagram of the secondary hopper, primary hopper, first scraper assembly and second scraper assembly in the second embodiment of the present invention; Figure 13 is the schematic structure diagram of the rotating drum in the second embodiment of the present invention; Figure 14 for the present invention Figure 13 exploded view; Figure 15 is the assembly drawing of the L-shaped rod and the strip-shaped elastic plate of the present invention; Figure 16 is the cooperation diagram of the strip-shaped elastic plate and the adjusting assembly in the straightened state of the present invention; Figure 17 is the cooperation diagram of the strip-shaped elastic plate and the adjusting assembly in the bent state of the present invention.

[0020] In the figure, 1 is the outer shell; 2 is the nitrogen buffer tank; 3 is the secondary feeding hopper, including 31 the hopper body two, 32 the liquid distribution plate, 33 the partition block two, 34 the avoidance groove, 35 the flow channel two; 4 is the primary feeding hopper, including 41 the hopper body one, 42 the flow channel one, 43 the partition block one, 44 the arc bottom one; 5 is the rotary drum, including 51 the inner cylinder with 511 the end plate and 512 the end hole, 52 the strip-shaped elastic plate with 521 the L-shaped rod; 6 is the adjustment assembly, including 61 the bending adjustment disk with 611 the first convex part and 612 the first concave part, 62 the straightening adjustment disk with 621 the second convex part and 622 the second concave part, 63 the position adjustment bolt; 7 is the second scraper assembly; 8 is the feed pipe; 9 is the first scraper assembly, including 91 the tool body, 92 the tool holder, 93 the tool shaft, 94 the connecting rod, 95 the adjustment bolt; 10 is the discharge pipeline; 11 is the discharge port; 13 is the hollow rotating shaft; 14 is the platform; 15 is the guide plate; 16 is the auger. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or position relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0023] Next, according to Figures 1-17 Describe the anhydrous piperazine flaking device and its flaking method provided by the embodiments of the present invention.

[0024] Embodiment 1: Please refer to Figures 1-7, an embodiment of the present invention provides an anhydrous piperazine flaking device, which includes a housing 1 and a drum 5 located inside the housing 1. A primary feeding hopper 4 is provided in a region near the upper side of one side of the drum 5. A secondary feeding hopper 3 is also provided on the side of the drum 5 close to the primary feeding hopper 4. The position of the secondary feeding hopper 3 is higher than that of the primary feeding hopper 4. There are multiple groups of flow channels 42 on the primary feeding hopper 4 arranged side by side with the flow direction gradually approaching the outer surface of the drum 5. Multiple groups of flow channels 35 with the flow direction gradually approaching the outer surface of the drum 5 are arranged side by side on the secondary feeding hopper 3. The flow channels 42 and the flow channels 35 are arranged alternately, and there is a gap between the flow channels 42 and the flow channels 35 in the radial projection direction of the drum 5, so that the anhydrous piperazine on the outer surface of the drum 5 is arranged at intervals and discontinuously in the axial direction of the drum 5.

[0025] The rotation direction of the above-mentioned drum 5 is referred to Figure 3 as shown. At this time, the drum 5 rotates clockwise. Thus, the drum 5 is first fed at the position of the primary feeding hopper 4, and then fed at the position of the secondary feeding hopper 3. The feeding positions of the two times are different. Refer to Figure 8 as shown. The shaded part inclined to the right is the material fed by the secondary feeding hopper 3, and the shaded part inclined to the left is the material fed by the primary feeding hopper 4.

[0026] Therefore, the anhydrous piperazine formed on the drum 5 of the anhydrous piperazine flaking device provided by the embodiment of the present invention is arranged at intervals and discontinuously in the axial direction of the drum 5, thereby reducing the stress of the anhydrous piperazine itself along the axial direction of the drum 5, facilitating scraping. And because the anhydrous piperazine is arranged at intervals and discontinuously on the drum 5, its volume after being scraped off is smaller, and the formed flaky structure is relatively finer, which is beneficial to later use.

[0027] Refer to Figures 4-5 as shown. The above-mentioned primary feeding hopper 4 further includes a hopper body 41. The hopper body 41 is closely attached to the outer surface of the drum 5. The side of the hopper body 41 close to the drum 5 is the opening side. Partition blocks 43 are arranged at intervals on the upper surface of the hopper body 41 near the opening side. The flow channels 42 are formed by the spaces between two adjacent partition blocks 43. The external anhydrous piperazine liquid is fed into the hopper body 41 through a feed pipe 8 located above the housing 1, so that the liquid can gradually flow along the flow channels 42 to the drum 5.

[0028] Preferably, the part of the hopper body 41 attached to the outer surface of the drum 5 is an arc-shaped bottom 44, so as to improve the fitting degree between the drum 5 and the hopper body 41 and prevent the liquid from flowing downward between the hopper body 41 and the drum 5.

[0029] Combined with Figure 4 , Figure 6 and Figure 7As shown, the aforementioned secondary charging hopper 3 further includes a second hopper body 31. The second hopper body 31 is closely attached to the outer surface of the rotary drum 5. The side of the second hopper body 31 close to the rotary drum 5 is the open side. On the upper surface of the second hopper body 31, second partition blocks 33 are arranged at intervals on the side close to the open side. The second flow channel 35 is formed by the space between two adjacent second partition blocks 33. The position of the second partition blocks 33 should be opposite to that of the first flow channel 42, and the width of the second partition blocks 33 along the axial direction of the rotary drum 5 should be greater than the width of the first flow channel 42, so that the anhydrous piperazine formed through the first flow channel 42 and the anhydrous piperazine formed through the second flow channel 35 do not contact each other.

[0030] Preferably, in order to prevent the piperazine reaching the outer surface of the rotary drum 5 from the first flow channel 42 from being scraped off by the second partition blocks 33 when it reaches the position of the secondary charging hopper 3, an avoidance groove 34 is provided at the lower part of the second partition blocks 33. The side wall width of the avoidance groove 34 is the distance between two adjacent circles of piperazine on the rotary drum 5.

[0031] In addition, in order to improve the charging uniformity of the second flow channel 35, a liquid distribution plate 32 is fixedly arranged above the second hopper body 31. The external anhydrous piperazine liquid is fed onto the upper surface of the liquid distribution plate 32 through a feed pipe 8 located above the outer shell 1. The anhydrous piperazine liquid on the liquid distribution plate 32 enters the second flow channel 35 through the through holes on itself and reaches the outer surface of the rotary drum 5 along the second flow channel 35.

[0032] Furthermore, in order to enable the feed pipe 8 to charge the first hopper body 41 and the second hopper body 31 simultaneously, it is preferred to equip a tee at the lower end of the feed pipe 8. One end of the tee is connected to the feed pipe 8, and the other two ends respectively extend into the first hopper body 41 and the second hopper body 31.

[0033] Since the charging times of the primary charging hopper 4 and the secondary charging hopper 3 are different, in order to ensure that the piperazine has sufficient cooling time, a second scraper assembly 7 and a first scraper assembly 9 are provided on one side of the rotary drum 5. The position of the second scraper assembly 7 is higher than that of the first scraper assembly 9. An empty area corresponding to the second flow channel 35 is provided on the first scraper assembly 9, so that the first scraper assembly 9 can scrape off the piperazine on the outer surface of the rotary drum 5 from the first flow channel 42. The second scraper assembly 7 is a whole knife, which is used to scrape off the piperazine on the outer surface of the rotary drum 5 from the second flow channel 35 and can further scrape the piperazine from the first flow channel 42.

[0034] Therefore, the anhydrous piperazine flaking device provided by the embodiment of the present invention can scrape the piperazine charged in different time periods respectively, ensuring that the piperazine charged in different time periods has the same and sufficient cooling duration.

[0035] Preferably, a guide plate 15 is arranged on the side of the first scraper assembly 9 away from the rotary drum 5 for guiding the scraped piperazine to prevent the piperazine scraped from the upper layer from falling onto the first scraper assembly 9.

[0036] Such as Figure 9, Preferably, the first scraper assembly 9 includes a tool body 91 with an empty area thereon. On the side of the tool body 91 away from the drum 5, there is a tool holder 92. At both ends of the tool holder 92, there are fixed tool shafts 93. At one end of the tool shaft 93 away from the tool holder 92, there is a connecting rod 94. At the other end of the connecting rod 94, there is a hinged adjusting bolt 95. The adjusting bolt 95 is rotationally installed on the frame through threads. By rotating the adjusting bolt 95, the lifting of the adjusting bolt 95 itself can be realized, thereby pushing and pulling the connecting rod 94. When the connecting rod 94 is pushed and pulled, the tool shaft 93 can be rotated, so as to adjust the pressure of the tool body 91.

[0037] The specific structure and adjustment structure of the second scraper assembly 7 are similar to those of the first scraper assembly 9, except that the second scraper assembly 7 has no empty area.

[0038] Such as Figure 2 , below the outer shell 1, there is also provided a discharge pipeline 10. Below one end of the discharge pipeline 10, there is a discharge port 11. Inside the discharge pipeline 10, there is an auger 16. On the outer shell 1, there is a motor capable of driving the auger 16 to rotate, which is used to send out the scraped piperazine from the outer shell 1.

[0039] Such as Figure 1 , Preferably, a platform 14 is also provided above the outer shell 1. On the platform 14, there is a nitrogen buffer tank 2. A nitrogen pipeline is equipped between the nitrogen buffer tank 2 and the outer shell 1, which is used to fill nitrogen into the outer shell 1 to prevent the piperazine from being oxidized and discolored.

[0040] Embodiment 2: Referring to Figures 10-17 As shown, this embodiment is a structure added on the basis of Embodiment 1. Specifically, the drum 5 includes an inner cylinder 51 and strip-shaped elastic plates 52. At both ends of the inner cylinder 51, there are integral end plates 511. On the end plates 511, there are evenly arranged end holes 512. The strip-shaped elastic plates 52 are arranged around the outer periphery of the inner cylinder 51. At both ends of the strip-shaped elastic plates 52, there are fixed L-shaped rods 521, and the L-shaped rods 521 are inserted into the end holes 512; the anhydrous piperazine flaking device further includes an adjusting assembly 6 for expanding a single strip-shaped elastic plate 52 outward.

[0041] When the expansion assembly 6 works, the corresponding single strip-shaped elastic plate 52 can bend outward in a region. Referring to Figures 16-17 , the state shown is the state where the strip-shaped elastic plate 52 changes from straight to bent. Due to the expansion of a single strip-shaped elastic plate 52, the stress between the flaked piperazine and the outer surface of the strip-shaped elastic plate 52 is reduced, so that the stress between the two is reduced, which is convenient for subsequent scraping operations and avoids the situation of incomplete scraping and residue.

[0042] Referring to Figure 11 , Figure 13 And Figure 14As shown, there are two sets of the above-mentioned adjusting components 6, and the two sets of adjusting components 6 are distributed at both ends of the drum 5. Each set of adjusting components includes a straightening adjusting disc 62 and a bending adjusting disc 61.

[0043] Specifically, the straightening adjusting disc 62 and the bending adjusting disc 61 of one set of adjusting components 6 are arranged side by side. The bending adjusting disc 61 is directly fixed to the inner wall of the housing 1 by bolts and is in a fixed state. The straightening adjusting disc 62 is located between the L-shaped rod 521 and the end plate 511. On the side of the straightening adjusting disc 62 close to the L-shaped rod 521, there are a second convex part 621 and a second concave part 622. The second concave part 622 is in front of the first scraper assembly 9 on the rotation path of the drum 5. The bending adjusting disc 61 is located on the side of the L-shaped rod 521 away from the straightening adjusting disc 62. On the side of the bending adjusting disc 61 close to the L-shaped rod 521, there are a first convex part 611 and a first concave part 612. The position of the first convex part 611 is opposite to that of the second concave part 622, so that the strip-shaped elastic plate 52 can be slightly bent under the pressure of the first convex part 611 before reaching the first scraper assembly 9, forming a state of pre-separation of piperazine from the strip-shaped elastic plate 52. When the strip-shaped elastic plate 52 is in the area where the first convex part 611 is not located, it is straightened under the pressure of the second convex part 621, forming the flat state required for feeding and scraping.

[0044] For a better understanding of the adjusting component 6, referring to Figure 12 , the periphery of the drum 5 is divided into area a and area b. Then the second concave part 622 and the first convex part 611 are located in the area where area a is located. At this time, the two first convex parts 611 will squeeze the L-shaped rod 521, so that the two L-shaped rods 521 apply pressure to the strip-shaped elastic plate 52, and thus the strip-shaped elastic plate 52 is slightly bent under pressure, forming Figure 17 the state shown in Figure 17 Figure 12 shows the state of one of the strip-shaped elastic plates 52 being bent under the pressure of the first convex part 611 when it reaches area a. When the strip-shaped elastic plate 52 leaves area a and loses pressure at both ends, at this time, the second convex part 621 pushes the L-shaped rod 521, so that the two ends of the strip-shaped elastic plate 52 are subjected to tension and are straightened again, forming Figure 16 the state shown in Figure 16 i.e., the state of one of the strip-shaped elastic plates 52 being straightened under tension.

[0045] It should be noted that in order to ensure that the strip-shaped elastic plate 52 can bend and expand outward under pressure, an arc-shaped groove area is arranged in the middle of the inner wall of the strip-shaped elastic plate 52.

[0046] Preferably, the material of the strip-shaped elastic plate 52 is SUS301 stainless steel.

[0047] It should be noted that although the piperazine fed in one time and the piperazine fed in the second time are both pre-separated from the strip-shaped elastic plate 52 in area a, this does not affect the cooling time of the piperazine. It only reduces the viscosity between the strip-shaped elastic plate 52 and the piperazine. After the viscosity is reduced, a part of the piperazine is first scraped off by the first scraper assembly 9, and although the other part of the piperazine is pre-separated, it will not break away from the strip-shaped elastic plate 52, enabling it to continue to cool and form flakes after pre-separation, and then reach the second scraper assembly 7 and be scraped off.

[0048] When the above-mentioned strip-shaped elastic plate 52 is straightened, in addition to relying on the thrust of the second convex part 621, it is also subjected to the pressure of two groups of scrapers and the pressure of two groups of hoppers. These pressures all contribute to the straightening of the strip-shaped elastic plate 52 to ensure its continuous use. When one of the strip-shaped elastic plates 52 is deformed and verified to be unable to be straightened, it can be replaced.

[0049] Furthermore, in order to ensure that the second convex part 621 has sufficient straightening force on the strip-shaped elastic plate 52, an adjusting bolt 63 is threadedly connected to the upper part of the bending adjusting disk 61. The other end of the adjusting bolt 63 is rotatably installed on the straightening adjusting disk 62. One end of the adjusting bolt 63 close to the bending adjusting disk 61 is exposed outside the housing 1. By rotating the adjusting bolt 63, the straightening adjusting disk 62 can be gradually pulled, so that the straightening adjusting disk 62 gradually moves away from the drum 5 to adjust the force required for straightening the strip-shaped elastic plate 52.

[0050] Refer to Figure 11 , hollow rotating shafts 13 are fixed at both ends of the inner cylinder 51. One end of the hollow rotating shaft 13 is connected to the water inlet pipe, and the other end is connected to the drain pipe. A cooling pipeline is arranged in the inner cylinder 51, and the low temperature of the cooling pipeline is transmitted to the piperazine through the inner cylinder 51 and the strip-shaped elastic plate 52.

[0051] During use (operation), the hollow rotating shaft 13 rotates to drive the drum 5 to rotate. At the same time, the piperazine liquid enters the first hopper 41 and the second hopper 31 from the feed pipe 8, and respectively reaches the outer surface of the strip-shaped elastic plate 52 from the first flow channel 42 and the second flow channel 35. The cooling pipeline in the drum 5 can cool the piperazine, and the cooled piperazine forms flakes. When the strip-shaped elastic plate 52 on the drum 5 rotates to area a, the two first convex parts 611 press the L-shaped rod 521, so that the two L-shaped rods 521 apply pressure to the strip-shaped elastic plate 52, so that the strip-shaped elastic plate 52 is slightly bent under pressure, forming Figure 17 the state shown. At this time, the piperazine on the strip-shaped elastic plate 52 is pre-separated from the strip-shaped elastic plate 52. Subsequently, when the strip-shaped elastic plate 52 leaves area a, at this time, the second convex part 621 pushes the L-shaped rod 521, so that both ends of the strip-shaped elastic plate 52 are subjected to tensile force and are re-straightened, forming Figure 16In the shown state, after being straightened, when the strip-shaped elastic plate 52 reaches the area of the first scraper assembly 9, the piperazine fed by the primary feeding hopper 4 is scraped off. When it reaches the area of the second scraper assembly 7, the piperazine fed by the secondary feeding hopper 3 is scraped off. Subsequently, it can reach the positions of the primary feeding hopper 4 and the secondary feeding hopper 3 again for feeding.

[0052] The scraped-off piperazine drops downward to the auger 16 and is conveyed out of the housing 1.

[0053] On the other hand, the present invention also provides a method for flaking anhydrous piperazine, which is applicable to the above-mentioned anhydrous piperazine flaking device, and includes the following steps: Step 1: Feed materials to the outer surface of the drum 5 in sequence through the primary feeding hopper 4 and the secondary feeding hopper 3, so that the piperazine on the drum 5 is arranged at intervals and discontinuously in the axial direction of the drum 5; Step 2: The cooling pipeline in the drum 5 cools the piperazine on the outer surface of the drum 5 to make the piperazine flake; Step 3: The piperazine flaked on the strip-shaped elastic plate 52 is pre-separated from the strip-shaped elastic plate 52 by the pressure of the first convex part 611 before reaching the first scraper assembly 9; Step 4: The pre-separated piperazine is scraped off from the strip-shaped elastic plate 52 by the first scraper assembly 9 and the second scraper assembly 7 in sequence and then discharged.

[0054] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0055] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An anhydrous piperazine flaking device, characterized in that, Comprising: A housing (1); A rotary drum (5), which is located inside the housing (1); A primary feeding hopper (4), which is located on one side of the rotary drum (5); A secondary feeding hopper (3), which is located on the side of the rotary drum (5) close to the primary feeding hopper (4), and the position of the secondary feeding hopper (3) is higher than that of the primary feeding hopper (4); On the primary feeding hopper (4), there are multiple groups of flow channels one (42) arranged side by side with a flow direction gradually approaching the outer surface of the rotary drum (5). On the secondary feeding hopper (3), there are multiple groups of flow channels two (35) arranged side by side with a flow direction gradually approaching the outer surface of the rotary drum (5). The flow channels one (42) and the flow channels two (35) are arranged in an interleaved manner, and there is a gap between the flow channels one (42) and the flow channels two (35) in the radial projection direction of the rotary drum (5), so that the anhydrous piperazine on the outer surface of the rotary drum (5) is arranged at intervals and discontinuously in the axial direction of the rotary drum (5).

2. The anhydrous piperazine flaking device according to claim 1, wherein: The primary feeding hopper (4) further includes a hopper body one (41), and the hopper body one (41) is closely attached to the outer surface of the rotary drum (5). The side of the hopper body one (41) close to the rotary drum (5) is the opening side. On the upper surface of the hopper body one (41) close to the opening side, partition blocks one (43) are arranged at intervals. The flow channels one (42) are formed by the spaces between two adjacent partition blocks one (43).

3. The anhydrous piperazine flaking device according to claim 2, characterized in that: The secondary feeding hopper (3) further includes a hopper body two (31). The hopper body two (31) is closely attached to the outer surface of the rotary drum (5). The side of the hopper body two (31) close to the rotary drum (5) is the opening side. On the upper surface of the hopper body two (31) close to the opening side, partition blocks two (33) are arranged at intervals. The flow channels two (35) are formed by the spaces between two adjacent partition blocks two (33). A liquid distribution plate (32) is fixedly arranged above the hopper body two (31).

4. A device for tabulating anhydrous piperazine according to claim 1, characterized in that: On one side of the rotary drum (5), there is a second scraper assembly (7) and a first scraper assembly (9). The position of the second scraper assembly (7) is higher than that of the first scraper assembly (9). An empty area corresponding to the flow channels two (35) is provided on the first scraper assembly (9), so that the first scraper assembly (9) can scrape the piperazine on the outer surface of the rotary drum (5) from the flow channels one (42). The second scraper assembly (7) is a whole knife, which is used to scrape the piperazine on the outer surface of the rotary drum (5) from the flow channels two (35).

5. The anhydrous piperazine flaking device according to claim 4, characterized in that: The first scraper assembly (9) includes a knife body (91), and the empty area is located on the knife body (91); On the side of the knife body (91) away from the rotary drum (5), there is a knife seat (92). Knife shafts (93) are fixedly arranged at both ends of the knife seat (92). A connecting rod (94) is arranged at the end of the knife shaft (93) away from the knife seat (92). The other end of the connecting rod (94) is hinged with an adjusting bolt (95), and the adjusting bolt (95) is rotationally installed on the frame through threads.

6. A kind of anhydrous piperazine flaking device according to any one of claims 1-4, characterized in that: The rotary drum (5) includes: An inner cylinder (51), and end plates (511) integrated with both ends of the inner cylinder (51). End holes (512) are evenly arranged on the end plates (511); A strip-shaped elastic plate (52), the strip-shaped elastic plate (52) is arranged around the inner cylinder (51), and L-shaped rods (521) are fixedly provided at both ends of the strip-shaped elastic plate (52), and the insertion ends of the L-shaped rods (521) are inserted into the end holes (512); The anhydrous piperazine flaking device further includes an adjustment assembly (6) for expanding a single strip-shaped elastic plate (52) outward.

7. An anhydrous piperazine flaking device according to claim 6, characterized in that: The adjustment assembly (6) includes: A straightening adjustment disk (62), the straightening adjustment disk (62) is located between the L-shaped rod (521) and the end plate (511), a second convex portion (621) and a second concave portion (622) are provided on one side of the straightening adjustment disk (62) close to the L-shaped rod (521), and the second concave portion (622) is in front of the first scraper assembly (9) on the rotation path of the drum (5); A bending adjustment disk (61), the bending adjustment disk (61) is located on the side of the L-shaped rod (521) away from the straightening adjustment disk (62), a first convex portion (611) and a first concave portion (612) are provided on one side of the bending adjustment disk (61) close to the L-shaped rod (521), and the position of the first convex portion (611) is opposite to that of the second concave portion (622); So that the strip-shaped elastic plate (52) can be slightly bent under the pressure of the first convex portion (611) before reaching the first scraper assembly (9), forming a state where piperazine is pre-separated from the strip-shaped elastic plate (52); when the strip-shaped elastic plate (52) is in a region other than the region where the first convex portion (611) is located, it is straightened under the pressure of the second convex portion (621), forming a flat state required for feeding and scraping.

8. An anhydrous piperazine flaking device according to claim 7, characterized in that: The bending adjustment disk (61) is fixed to the inner wall of the housing (1) by bolts; A positioning bolt (63) is threadedly connected to the bending adjustment disk (61), and the other end of the positioning bolt (63) is rotatably installed on the straightening adjustment disk (62), and one end of the positioning bolt (63) close to the bending adjustment disk (61) is exposed outside the housing (1); When the positioning bolt (63) is rotated, the straightening adjustment disk (62) can be pulled to adjust the force required for straightening the strip-shaped elastic plate (52).

9. The anhydrous piperazine flaking device according to claim 8, characterized in that: Hollow rotating shafts (13) are fixed at both ends of the inner cylinder (51), one end of the hollow rotating shaft (13) is connected to a water inlet pipe, the other end is connected to a drain pipe, and a cooling pipeline is provided inside the inner cylinder (51).

10. A method for tabulating anhydrous piperazine, applicable to the anhydrous piperazine tabulating device described in any one of claims 1-9, characterized in that, Including the following steps: Step 1: Feed materials to the outer surface of the drum (5) through the primary hopper (4) and the secondary hopper (3) in sequence, so that the piperazine in the drum (5) is arranged at intervals and discontinuously in the axial direction of the drum (5); Step 2: The cooling pipeline in the drum (5) cools the piperazine on the outer surface of the drum (5) to make the piperazine flake; Step 3: The piperazine flaked on the strip-shaped elastic plate (52) is pre-separated from the strip-shaped elastic plate (52) under the pressure of the first convex portion (611) before reaching the first scraper assembly (9); Step 4: The pre-separated piperazine is scraped off from the strip-shaped elastic plate (52) by the first scraper assembly (9) and the second scraper assembly (7) in sequence and then discharged.

Images