Anhydrous piperazine flake forming device and flake forming method

Abstract

The present invention discloses an anhydrous piperazine flake forming device and a flake forming method thereof, and relates to the technical field of auxiliary agent production equipment. The device comprises a housing; a rotary drum, the rotary drum being located within the housing; a primary hopper, the primary hopper being located on one side of the rotary drum; and a secondary hopper, the secondary hopper being located on a side of the rotary drum close to the primary hopper, the secondary hopper being located higher than the primary hopper. The primary hopper is provided with a plurality of first flow channels arranged side by side, the flow directions of which gradually approach the outer surface of the rotary drum; and the secondary hopper is provided with a plurality of second flow channels arranged side by side, the flow directions of which gradually approach the outer surface of the rotary drum. The anhydrous piperazine flake forming device and the flake forming method thereof are characterized by discontinuously arranging the anhydrous piperazine formed on the rotary drum at intervals, thereby reducing the stress of the anhydrous piperazine itself along the axial direction of the rotary drum, facilitating scraping. Moreover, since the anhydrous piperazine is discontinuously arranged at intervals on the rotary drum, the scraped anhydrous piperazine has a smaller volume, and the formed flake structure is relatively fine and fragmented.

Description

Technical Field

[0001] The invention relates to the technical field of auxiliary agent production equipment, in particular to an anhydrous piperazine flake forming device and a flake forming method thereof. Background Art

[0002] Anhydrous piperazine, also known as dimethylamine, is an important raw material in the chemical industry. Its flake formation process is achieved by a condensation slicer. The condensation slicer rotates the heated liquid raw material in the material trough of the equipment through a stainless steel internal cooling roller. The adjustable slicing knife device at the front is attached to slice it. The finished liquid is converted into solid flakes by the cooling blade. The raw material can also be sliced when the liquid is cooled and turned into crystals.

[0003] Patent application number CN201220620425.9 proposes an anhydrous piperazine flake machine, in which ridges are set on the surface of the drum. When the piperazine liquid is flaked, the flake material reduces the force between the flake material and the drum surface due to its own shrinkage and deformation, making it easy to fall off, reducing the wear on the scraper, increasing the service life of the scraper, and also improving the working efficiency of the flake.

[0004] However, due to the high stress of piperazine after cooling and forming, some of the sheet structures cut out are large in size, which affects subsequent use. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides an anhydrous piperazine flake forming device and a flake forming method thereof, which solves the problem in the existing technology that after piperazine is cooled and formed, its own stress is relatively large, resulting in the cut sheet structure having some large sizes, which affects subsequent use.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an anhydrous piperazine flake forming device, comprising:

[0007] shell;

[0008] a rotating drum, the rotating drum being located in the housing;

[0009] A primary loading hopper, the primary loading hopper being located on one side of the rotating drum;

[0010] A secondary loading hopper is located on the side of the drum close to the primary loading hopper, and the position of the secondary loading hopper is higher than that of the primary loading hopper;

[0011] The primary loading hopper is provided with multiple groups of flow channels 1 arranged side by side, with the flow direction gradually approaching the outer surface of the drum. The secondary loading hopper is provided with multiple groups of flow channels 2 arranged side by side, with the flow direction gradually approaching the outer surface of the drum. The flow channels 1 and 2 are arranged alternately, and there is a gap between the flow channels 1 and 2 in the radial projection direction of the drum, so that the anhydrous piperazine on the outer surface of the drum is arranged discontinuously in the axial direction of the drum.

[0012] Furthermore, the one-time loading hopper also includes a hopper body 1, which is tightly attached to the outer surface of the drum. The side of the hopper body 1 close to the drum is the open side, and the side of the upper surface of the hopper body 1 close to the open side is spaced apart with spacers 1, and the flow channel 1 is formed by the space between two adjacent spacers 1.

[0013] Furthermore, the secondary loading hopper also includes a hopper body 2, which is tightly attached to the outer surface of the drum. The side of the hopper body 2 close to the drum is the open side, and the upper surface of the hopper body 2 close to the open side is provided with spacer blocks 2 at intervals. The flow channel 2 is formed by the space between two adjacent spacer blocks 2, and a liquid distribution plate is fixed on the upper part of the hopper body 2.

[0014] Furthermore, a second scraper assembly and a first scraper assembly are provided on one side of the drum. The second scraper assembly is positioned higher than the first scraper assembly. The first scraper assembly is provided with an empty area corresponding to the second flow channel, so that the first scraper assembly can scrape the piperazine from the first flow channel on the outer surface of the drum.

[0015] The second scraper assembly is a whole blade, which is used to scrape off the piperazine from the second flow channel on the outer surface of the drum.

[0016] Furthermore, the first scraper assembly includes a blade body, and the empty area is located on the blade body;

[0017] A knife seat is provided on the side of the knife body away from the rotating drum, and a knife shaft is fixedly provided at both ends of the knife seat. A connecting rod is provided at one end of the knife shaft away from the knife seat, and an adjusting bolt is hinged at the other end of the connecting rod. The adjusting bolt is installed on the frame by threaded rotation.

[0018] Furthermore, the drum comprises:

[0019] An inner cylinder, wherein both ends of the inner cylinder are provided with integral end plates, and end holes are evenly provided on the end plates;

[0020] Strip spring plates, which are arranged on the periphery of the inner tube, and L-shaped rods are fixed at both ends of the strip spring plates, and the L-shaped rods are inserted into the end holes;

[0021] The anhydrous piperazine flake forming device further comprises an adjusting component for causing the single strip-shaped spring plate to expand outward.

[0022] Furthermore, the adjustment component includes:

[0023] a straightening adjustment disk, the straightening adjustment disk being located between the L-shaped rod and the end plate, the straightening adjustment disk being provided with a second convex portion and a second concave portion on a side close to the L-shaped rod, the second concave portion being located in front of the first scraper assembly on the rotation path of the drum;

[0024] a bending adjustment disk, the bending adjustment disk being located on a side of the L-shaped rod away from the straightening adjustment disk, the bending adjustment disk being provided with a first convex portion and a first concave portion on a side of the bending adjustment disk close to the L-shaped rod, the first convex portion being located opposite to the second concave portion;

[0025] The strip spring plate is subjected to the pressure of the first convex portion and is slightly bent before reaching the first scraper assembly, thereby forming a state in which piperazine and the strip spring plate are pre-separated; when the strip spring plate is in an area other than the first convex portion, it is subjected to the pressure of the second convex portion and is straightened, thereby forming the required flat state for loading and scraping.

[0026] Furthermore, the bending adjustment disk is fixed to the inner wall of the housing by bolts;

[0027] The upper thread of the bending adjustment disk is connected with an adjusting bolt, the other end of the adjusting bolt is rotatably mounted on the straightening adjustment disk, and the end of the adjusting bolt close to the bending adjustment disk is exposed outside the housing;

[0028] When the adjusting bolt is rotated, the straightening adjustment disk can be pulled to adjust the force required to straighten the strip spring.

[0029] 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, and a cooling pipeline is provided in the inner cylinder.

[0030] On the other hand, the present invention also provides an anhydrous piperazine flake forming method, which is applicable to the above-mentioned anhydrous piperazine flake forming device, comprising the following steps:

[0031] Step 1: Load the material onto the outer surface of the drum through the primary loading hopper and the secondary loading hopper in sequence, so that the piperazine in the drum is arranged discontinuously in the axial direction of the drum;

[0032] Step 2: The cooling pipe inside the drum cools the piperazine on the outer surface of the drum to form flakes of piperazine;

[0033] Step 3: Piperazine flakes on the strip spring plate are pre-separated from the strip spring plate by the pressure of the first convex portion before reaching the first scraper assembly;

[0034] Step 4: The pre-separated piperazine is scraped off from the strip spring plate by the first scraper assembly and the second scraper assembly in sequence, and then discharged.

[0035] The present invention has the following beneficial effects:

[0036] (1) The anhydrous piperazine flake forming device and the flake forming method thereof can form anhydrous piperazine on the drum in an intermittent and discontinuous arrangement, thereby reducing the stress of the anhydrous piperazine itself along the axial direction of the drum and facilitating scraping. Moreover, since the anhydrous piperazine is arranged in an intermittent and discontinuous arrangement on the drum, the volume of the anhydrous piperazine after being scraped off is smaller, and the formed flake structure is relatively fine and fragmented, which is convenient for later use.

[0037] (2) The drum of the anhydrous piperazine flake forming device and the flake forming method thereof is made of a plurality of strip-shaped spring plates and is equipped with corresponding adjustment components so that the piperazine is pre-separated from the drum before being scraped off, thereby avoiding the situation where the piperazine is difficult to scrape off due to the piperazine sticking to the drum.

[0038] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is an appearance diagram of the present invention;

[0040] Figure 2 Schematic diagram of the internal structure of the housing in the first embodiment of the present invention;

[0041] Figure 3 This is a distribution diagram of the secondary loading hopper, the primary loading hopper, the first scraper assembly, and the second scraper assembly in Example 1 of the present invention;

[0042] Figure 4 This is a diagram showing the relative positions of the secondary loading hopper and the primary loading hopper of the present invention;

[0043] Figure 5 This is a bottom view of the one-time loading hopper of the present invention;

[0044] Figure 6 This is a bottom view of the secondary loading hopper of the present invention;

[0045] Figure 7 This is a cross-sectional view of the secondary loading hopper of the present invention;

[0046] Figure 8 This is a distribution diagram of piperazine formed on the drum by the secondary loading hopper and the primary loading hopper of the present invention;

[0047] Figure 9 Schematic diagram of the structure of the first scraper assembly of the present invention;

[0048] Figure 10 Schematic diagram of the internal structure of the housing in the second embodiment of the present invention;

[0049] Figure 11 This is a diagram showing the relative positions of the secondary loading hopper, the primary loading hopper, and the drum in the second embodiment of the present invention;

[0050] Figure 12 This is a distribution diagram of the secondary loading hopper, the primary loading hopper, the first scraper assembly, and the second scraper assembly in Example 2 of the present invention;

[0051] Figure 13 This is a schematic structural diagram of the rotary drum in the second embodiment of the present invention;

[0052] Figure 14 For the present invention Figure 13 Exploded view of

[0053] Figure 15 This is an assembly diagram of the L-shaped rod and the strip spring plate of the present invention;

[0054] Figure 16 This is a diagram showing the coordination between the strip spring plate and the adjustment assembly in a straightened state;

[0055] Figure 17 This is a diagram showing the coordination between the strip spring plate of the present invention and the adjustment assembly in a bent state.

[0056] In the figure, 1. Shell; 2. Nitrogen buffer tank; 3. Secondary hopper; 31. Second hopper body; 32. Liquid distribution plate; 33. Second spacer; 34. Avoidance groove; 35. Second flow channel; 4. Primary hopper; 41. First hopper body; 42. First flow channel; 43. First spacer; 44. First curved bottom; 5. Drum; 51. Inner cylinder; 511. End plate; 512. End hole; 52. Strip spring plate; 521. L-shaped rod; 6. Adjustment assembly; 61. Bending adjustment disk ;611, first convex part;612, first concave part;62, straightening adjustment disk;621, second convex part;622, second concave part;63, adjusting bolt;7, second scraper assembly;8, feed pipe;9, first scraper assembly;91, knife body;92, knife seat;93, knife shaft;94, connecting rod;95, adjusting bolt;10, discharge pipe;11, discharge port;13, hollow rotating shaft;14, platform;15, guide plate;16, auger. DETAILED DESCRIPTION

[0057] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0058] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0059] The following is based on Figures 1-17 The present invention provides an anhydrous piperazine flake forming device and a flake forming method thereof.

[0060] Example 1:

[0061] See also Figure 1-Figure 7 An embodiment of the present invention provides an anhydrous piperazine flake forming device, comprising a shell 1 and a rotating drum 5 located in the shell 1, a primary loading hopper 4 is provided on one side of the rotating drum 5 near the upper area, a secondary loading hopper 3 is further provided on the side of the rotating drum 5 near the primary loading hopper 4, the secondary loading hopper 3 is located higher than the primary loading hopper 4, a plurality of groups of flow channels 1 42 are arranged side by side on the primary loading hopper 4, and the flow directions are gradually approaching the outer surface of the rotating drum 5, a plurality of groups of flow channels 2 35 are arranged side by side on the secondary loading hopper 3, and the flow channels 1 42 and the flow channels 2 35 are arranged alternately, and there is a gap between the flow channels 1 42 and the flow channels 2 35 in the radial projection direction of the rotating drum 5, so that the anhydrous piperazine on the outer surface of the rotating drum 5 is arranged discontinuously in the axial direction of the rotating drum 5.

[0062] The rotation direction of the drum 5 is as follows: Figure 3 As shown, the drum 5 rotates clockwise at this time, so that the drum 5 first loads the material at the position of the primary loading hopper 4, and then loads the material at the position of the secondary loading hopper 3. The positions of the two loadings are different. Figure 8 As shown, the shaded portion tilted to the right is the material loaded by the secondary loading hopper 3, and the shaded portion tilted to the left is the material loaded by the primary loading hopper 4.

[0063] Therefore, the anhydrous piperazine formed on the drum 5 of the anhydrous piperazine flake forming device provided in the embodiment of the present invention is arranged discontinuously at intervals 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 and facilitating scraping. In addition, since the anhydrous piperazine is arranged discontinuously at intervals on the drum 5, its volume after scraping is smaller, and the formed sheet structure is relatively fine and fragmented, which is conducive to later use.

[0064] Reference Figure 4-Figure 5As shown, the primary loading hopper 4 mentioned above also includes a hopper body 41, which is closely attached to the outer surface of the drum 5. The side of the hopper body 41 close to the drum 5 is an open side. Spacer blocks 43 are arranged at intervals on one side of the upper surface of the hopper body 41 close to the open side. The flow channel 42 is formed by the space between two adjacent spacer blocks 43. The anhydrous piperazine liquid from the outside is fed into the hopper body 41 through the feeding pipe 8 located above the shell 1, so that the liquid can gradually flow toward the drum 5 along the flow channel 42.

[0065] Preferably, the portion of the bucket body 41 that is in contact with the outer surface of the drum 5 is an arc-shaped bottom 44 , thereby improving the fit between the drum 5 and the bucket body 41 and preventing liquid from flowing downward between the bucket body 41 and the drum 5 .

[0066] Combine Figure 4 、 Figure 6 and Figure 7 As shown, the secondary feeding hopper 3 mentioned above also includes a hopper body 2 31, which is tightly attached to the outer surface of the drum 5. The side of the hopper body 2 31 close to the drum 5 is an open side. The upper surface of the hopper body 2 31 is close to the open side and spacer blocks 2 33 are arranged at intervals. The flow channel 2 35 is formed by the space between two adjacent spacer blocks 2 33. The position of the spacer blocks 2 33 should be opposite to the flow channel 1 42, and the width of the spacer blocks 2 33 along the axial direction of the drum 5 should be greater than the width of the flow channel 1 42, so that the anhydrous piperazine formed through the flow channel 1 42 and the anhydrous piperazine formed through the flow channel 2 35 do not contact each other.

[0067] Preferably, in order to prevent the piperazine reaching the outer surface of the drum 5 from the flow channel 1 42 from being scraped off by the partition block 2 33 when it reaches the position of the secondary hopper 3, an avoidance groove 34 is provided at the lower part of the partition block 2 33, and the side wall width of the avoidance groove 34 is the distance between two adjacent circles of piperazine on the drum 5.

[0068] In addition, in order to improve the uniformity of feeding into the second flow channel 35, a liquid distribution plate 32 is fixedly provided above the second bucket body 31. The anhydrous piperazine liquid from the outside is fed into the upper surface of the liquid distribution plate 32 through the 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 the liquid distribution plate 32 and reaches the outer surface of the drum 5 along the second flow channel 35.

[0069] Furthermore, in order to enable the feed pipe 8 to feed the bucket body 1 41 and the bucket body 2 31 at the same time, it is preferably equipped with 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 extend into the bucket body 1 41 and the bucket body 2 31 respectively.

[0070] Since the loading time of the primary loading hopper 4 and the secondary loading hopper 3 is 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 drum 5. The second scraper assembly 7 is positioned higher than the first scraper assembly 9. The first scraper assembly 9 is provided with an empty area corresponding to the second flow channel 35, so that the first scraper assembly 9 can scrape off the piperazine from the first flow channel 42 on the outer surface of the drum 5. The second scraper assembly 7 is a whole blade, which is used to scrape off the piperazine from the second flow channel 35 on the outer surface of the drum 5, and can further scrape the piperazine from the first flow channel 42.

[0071] Therefore, the anhydrous piperazine flake forming device provided in the embodiment of the present invention can scrape piperazine fed in different time periods separately, ensuring that the piperazine fed in different time periods has the same and sufficient cooling time.

[0072] Preferably, a guide plate 15 is provided on the side of the first scraper assembly 9 away from the drum 5 to guide the scraped piperazine and prevent the scraped piperazine from the upper layer from falling onto the first scraper assembly 9 .

[0073] like Figure 9 Preferably, the first scraper assembly 9 includes a cutter body 91, the empty area is located on the cutter body 91, a cutter seat 92 is provided on the side of the cutter body 91 away from the rotating drum 5, and cutter shafts 93 are fixed at both ends of the cutter seat 92. A connecting rod 94 is provided at the end of the cutter shaft 93 away from the cutter seat 92, and an adjusting bolt 95 is hinged at the other end of the connecting rod 94. The adjusting bolt 95 is installed on the frame by threaded rotation. By rotating the adjusting bolt 95, the adjusting bolt 95 itself can be raised and lowered, thereby pushing and pulling the connecting rod 94. When the connecting rod 94 is pushed and pulled, the cutter shaft 93 can be rotated, thereby adjusting the pressure of the cutter body 91.

[0074] The specific structure and adjustment structure of the second scraper assembly 7 are similar to those of the first scraper assembly 9 , with the only difference being that the second scraper assembly 7 has no empty area.

[0075] like Figure 2 A discharge pipe 10 is also provided below the shell 1 , a discharge port 11 is provided below one end of the discharge pipe 10 , an auger 16 is provided in the discharge pipe 10 , and a motor capable of driving the auger 16 to rotate is installed on the shell 1 to send the scraped piperazine out of the shell 1 .

[0076] like Figure 1 Preferably, a platform 14 is provided above the outer shell 1, on which a nitrogen buffer tank 2 is provided. A nitrogen pipeline is provided between the nitrogen buffer tank 2 and the outer shell 1 for filling nitrogen into the outer shell 1 to prevent piperazine from being oxidized and discolored.

[0077] Example 2:

[0078] Reference Figures 10-17As shown, this embodiment is a structure additionally provided on the basis of the first embodiment. Specifically, the rotating drum 5 includes an inner cylinder 51 and a strip spring plate 52. The inner cylinder 51 is provided with an integral end plate 511 at both ends. The end plate 511 is evenly provided with end holes 512. The strip spring plates 52 are arranged on the periphery of the inner cylinder 51. Both ends of the strip spring plates 52 are fixed with L-shaped rods 521, which are inserted into the end holes 512. The anhydrous piperazine flake forming device also includes an adjusting component 6 for causing the single strip spring plate 52 to expand outward.

[0079] When the adjustment assembly 6 is working, the corresponding single strip spring plate 52 can bend outwards. Figure 16-17 The state is that the strip spring plate 52 changes from straight to bent. As the single strip spring plate 52 expands, the stress between the piperazine flakes and the outer surface of the strip spring plate 52 is reduced, thereby reducing the stress between the two, facilitating the subsequent scraping operation and avoiding the situation where the scraping is not clean and there is residue.

[0080] Reference Figure 11 、 Figure 13 and Figure 14 As shown, there are two groups of the adjustment components 6 , which are distributed at both ends of the drum 5 . Each group of adjustment components includes a straightening adjustment disk 62 and a bending adjustment disk 61 .

[0081] Specifically, a straightening adjustment disk 62 and a bending adjustment disk 61 of a set of adjustment components 6 are arranged side by side, and the bending adjustment disk 61 is directly fixed to the inner wall of the shell 1 by bolts, which is in a fixed state. The straightening adjustment disk 62 is located between the L-shaped rod 521 and the end plate 511. The straightening adjustment disk 62 is provided with a second convex portion 621 and a second concave portion 622 on the side close to the L-shaped rod 521. The second concave portion 622 is located in front of the first scraper assembly 9 on the rotation path of the drum 5; the bending adjustment disk 61 is located on the L-shaped rod 521 away from the straightening adjustment disk. On one side of the section disk 62, a first protrusion 611 and a first recess 612 are provided on the side of the bending adjustment disk 61 close to the L-shaped rod 521, and the position of the first protrusion 611 is opposite to the second recess 622; so that the strip spring plate 52 can be slightly bent by the pressure of the first protrusion 611 before reaching the first scraper assembly 9, forming a state of pre-separation of piperazine and the strip spring plate 52; when the strip spring plate 52 is in an area other than the first protrusion 611, it is straightened by the pressure of the second protrusion 621, forming the required flat state for loading and scraping.

[0082] For a better understanding of the adjustment assembly 6, refer to Figure 12 , the periphery of the drum 5 is divided into area a and area b, and the second concave portion 622 and the first convex portion 611 are located in the area where area a is located. At this time, the two first convex portions 611 will squeeze the L-shaped rods 521, so that the two L-shaped rods 521 exert pressure on the strip spring plate 52, so that the strip spring plate 52 is slightly bent under pressure, forming Figure 17 The status shown, Figure 17 The diagram shows the state in which one of the strip spring plates 52 reaches area a and is bent by the pressure of the first protrusion 611. When the strip spring plate 52 leaves area a and the pressure at both ends is lost, the second protrusion 621 pushes the L-shaped rod 521, causing the two ends of the strip spring plate 52 to be pulled and straightened again, forming Figure 16 The status shown, Figure 16 That is, one of the strip spring plates 52 is in a state of being straightened by tension.

[0083] It should be noted that in order to ensure that the strip-shaped spring plate 52 can bend and expand outwards when under pressure, an arc-shaped groove area is provided in the middle of the inner wall of the strip-shaped spring plate 52 .

[0084] Preferably, the strip spring plate 52 is made of SUS301 stainless steel.

[0085] It should be noted that although the piperazine loaded once and the piperazine loaded twice are pre-separated from the strip spring plate 52 in zone a, this does not affect the cooling time of the piperazine. It only reduces the viscosity between the strip spring 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 the other part of the piperazine, although pre-separated, will not leave the strip spring plate 52, so that it can continue to cool and form flakes after pre-separation, and then reach the second scraper assembly 7 to be scraped off.

[0086] When the above-mentioned strip spring plate 52 is straightened, in addition to relying on the thrust of the second protrusion 621, it is also subjected to the pressure of two sets of scrapers and two sets of hoppers. These pressures all help to straighten the strip spring plate 52 and ensure its continued use. When one of the strip spring plates 52 is deformed and cannot be straightened, it can be replaced.

[0087] Furthermore, in order to ensure that the second protrusion 621 has sufficient straightening force on the strip spring plate 52, the upper thread of the bending adjustment disk 61 is connected with an adjusting bolt 63, and the other end of the adjusting bolt 63 is rotatably installed on the straightening adjustment disk 62. The end of the adjusting bolt 63 close to the bending adjustment disk 61 is exposed to the outside of the outer shell 1. By rotating the adjusting bolt 63, the straightening adjustment disk 62 can be gradually pulled so that the straightening adjustment disk 62 gradually moves away from the drum 5 to adjust the force required to straighten the strip spring plate 52.

[0088] Reference Figure 11 A hollow rotating shaft 13 is 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 provided in the inner cylinder 51. The low temperature of the cooling pipeline is transmitted to piperazine through the inner cylinder 51 and the strip spring plate 52.

[0089] When in use (operating), the hollow shaft 13 rotates to drive the drum 5 to rotate, and at the same time, the piperazine liquid enters the bucket body 1 41 and the bucket body 2 31 from the feed pipe 8, and reaches the outer surface of the strip spring plate 52 from the flow channel 1 42 and the flow channel 2 35 respectively. The cooling pipeline in the drum 5 can cool the piperazine. After cooling, the piperazine flakes. When the strip spring plate 52 on the drum 5 rotates to the a zone, the two first protrusions 611 press the L-shaped rods 521, so that the two L-shaped rods 521 apply pressure to the strip spring plate 52, so that the strip spring plate 52 is slightly bent under pressure, forming Figure 17 In the state shown, the piperazine on the strip spring plate 52 is pre-separated from the strip spring plate 52. Then, when the strip spring plate 52 leaves the a zone, the second protrusion 621 pushes the L-shaped rod 521, so that both ends of the strip spring plate 52 are subjected to tension and are straightened again, forming Figure 16 In the state shown, after being straightened, the strip spring plate 52 reaches the area of the first scraper assembly 9 and scrapes off the piperazine loaded by the primary loading hopper 4. When it reaches the area of the second scraper assembly 7, it scrapes off the piperazine loaded by the secondary loading hopper 3. Then it can reach the positions of the primary loading hopper 4 and the secondary loading hopper 3 again for loading.

[0090] The scraped piperazine falls downward to the auger 16 and is transported out of the housing 1 .

[0091] On the other hand, the present invention also provides an anhydrous piperazine flake forming method, which is applicable to the above-mentioned anhydrous piperazine flake forming device, comprising the following steps:

[0092] Step 1: feeding the piperazine onto 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 discontinuously in the axial direction of the drum 5;

[0093] Step 2: The cooling pipe in the drum 5 cools the piperazine on the outer surface of the drum 5 to form flakes of the piperazine;

[0094] Step 3: The piperazine flakes on the strip spring plate 52 are pre-separated from the strip spring plate 52 by the pressure of the first protrusion 611 before reaching the first scraper assembly 9;

[0095] Step 4: The pre-separated piperazine is scraped off from the strip spring plate 52 by the first scraper assembly 9 and the second scraper assembly 7 in sequence and discharged.

[0096] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0097] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An anhydrous piperazine flake forming device, characterized in that: include: housing (1); A rotating drum (5), wherein the rotating drum (5) is located inside the housing (1); A primary loading hopper (4), the primary loading hopper (4) being located on one side of the rotating drum (5); A secondary loading hopper (3), the secondary loading hopper (3) being located on a side of the rotating drum (5) close to the primary loading hopper (4), and the position of the secondary loading hopper (3) being higher than that of the primary loading hopper (4); The primary loading hopper (4) is provided with a plurality of flow channels (42) arranged side by side, the flow directions of which are gradually approaching the outer surface of the drum (5), and the secondary loading hopper (3) is provided with a plurality of flow channels (35) arranged side by side, the flow directions of which are gradually approaching the outer surface of the drum (5). 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 discontinuously in the axial direction of the drum (5).

2. The anhydrous piperazine flake forming device according to claim 1, wherein: The primary loading hopper (4) further comprises a hopper body (41), the hopper body (41) being closely attached to the outer surface of the drum (5), the side of the hopper body (41) close to the drum (5) being an opening side, and spacer blocks (43) being arranged at intervals on the side of the upper surface of the hopper body (41) close to the opening side, and the flow channel (42) being formed by the space between two adjacent spacer blocks (43).

3. The anhydrous piperazine flake forming device according to claim 2, wherein: The secondary loading hopper (3) further comprises a second hopper body (31), the second hopper body (31) being closely attached to the outer surface of the drum (5), the side of the second hopper body (31) close to the drum (5) being an open side, and second spacer blocks (33) being arranged at intervals on the side of the upper surface of the second hopper body (31) close to the open side, the second flow channel (35) being formed by the space between two adjacent second spacer blocks (33), and a liquid distribution plate (32) being fixedly provided on the upper part of the second hopper body (31).

4. The anhydrous piperazine flake forming device according to claim 1, wherein: A second scraper assembly (7) and a first scraper assembly (9) are provided on one side of the rotating drum (5); the second scraper assembly (7) is positioned higher than the first scraper assembly (9); and the first scraper assembly (9) is provided with an empty area corresponding to the second flow channel (35), so that the first scraper assembly (9) can scrape off piperazine from the first flow channel (42) on the outer surface of the rotating drum (5); The second scraper assembly (7) is a whole blade and is used to scrape piperazine from the outer surface of the drum (5) from the second flow channel (35).

5. The anhydrous piperazine flake forming device according to claim 4, characterized in that: The first scraper assembly (9) comprises a blade body (91), and the empty area is located on the blade body (91); A knife seat (92) is provided on the side of the knife body (91) away from the rotating drum (5), and a knife shaft (93) is fixedly provided at both ends of the knife seat (92). A connecting rod (94) is provided at one end of the knife shaft (93) away from the knife seat (92), and an adjusting bolt (95) is hingedly connected to the other end of the connecting rod (94). The adjusting bolt (95) is mounted on the frame by screw thread rotation.

6. The anhydrous piperazine flake forming device according to any one of claims 1 to 4, characterized in that: The rotating drum (5) comprises: An inner cylinder (51), wherein both ends of the inner cylinder (51) are provided with integral end plates (511), and end holes (512) are evenly provided on the end plates (511); A strip spring plate (52), the strip spring plate (52) being arranged on the periphery of the inner cylinder (51), and L-shaped rods (521) being fixed at both ends of the strip spring plate (52), the L-shaped rods (521) being inserted into the end holes (512); The anhydrous piperazine flake forming device further comprises an adjusting component (6) for causing a single strip-shaped spring plate (52) to expand outward.

7. The anhydrous piperazine flake forming device according to claim 6, characterized in that: The regulating component (6) comprises: a straightening adjustment disk (62), the straightening adjustment disk (62) being located between the L-shaped rod (521) and the end plate (511), a second convex portion (621) and a second concave portion (622) being provided on a side of the straightening adjustment disk (62) close to the L-shaped rod (521), the second concave portion (622) being located 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) being located on a side of the L-shaped rod (521) away from the straightening adjustment disk (62), the bending adjustment disk (61) being provided with a first convex portion (611) and a first concave portion (612) on a side of the bending adjustment disk (61) close to the L-shaped rod (521), the first convex portion (611) being located opposite to the second concave portion (622); The strip spring plate (52) is subjected to the pressure of the first convex portion (611) and is slightly bent before reaching the first scraper assembly (9), thereby forming a state in which piperazine and the strip spring plate (52) are pre-separated; when the strip spring plate (52) is in an area other than the first convex portion (611), it is subjected to the pressure of the second convex portion (621) and is straightened, thereby forming the required straight state for loading and scraping.

8. The anhydrous piperazine flake forming 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; The upper thread of the bending adjustment disk (61) is connected to an adjusting bolt (63), and the other end of the adjusting bolt (63) is rotatably mounted on the straightening adjustment disk (62), and one end of the adjusting bolt (63) close to the bending adjustment disk (61) is exposed outside the housing (1); When the adjusting bolt (63) is rotated, the straightening adjustment disk (62) can be pulled to adjust the force required for straightening the strip spring plate (52).

9. The anhydrous piperazine flake forming 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, and the other end is connected to a drain pipe. A cooling pipeline is provided in the inner cylinder (51).

10. A method for flake-forming anhydrous piperazine, applicable to the anhydrous piperazine flake-forming device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: loading the material onto the outer surface of the drum (5) in sequence through the primary loading hopper (4) and the secondary loading hopper (3), so that the piperazine in the drum (5) is arranged discontinuously in intervals along the axial direction of the drum (5); Step 2: The cooling pipe in the drum (5) cools the piperazine on the outer surface of the drum (5) to form piperazine flakes; Step 3: The piperazine flakes on the strip spring plate (52) are pre-separated from the strip spring plate (52) by the pressure of the first protrusion (611) before reaching the first scraper assembly (9); Step 4: The pre-separated piperazine is scraped off from the strip spring plate (52) by the first scraper assembly (9) and the second scraper assembly (7) in sequence and discharged.

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