Compression roller device with end face cooling function and dry type granulator

Abstract

The utility model relates to the technical field of pharmaceutical processing, and discloses a compression roller device with an end face cooling function and a dry type granulator, the compression roller device with the end face cooling function comprises a transmission shaft assembly, a compression roller and a gland, the rotation directions of the two transmission shaft assemblies are opposite; the two transmission shaft assemblies are sleeved with the two pressing rollers correspondingly. The gland is connected with the transmission shaft assembly, part of the gland abuts against the end face of the compression roller, and a cooling cavity is defined by the gland, the transmission shaft assembly and the compression roller; a first water inlet channel and a first water return channel are formed in the transmission shaft assembly, a second water inlet channel is formed in the gland, the first water inlet channel is communicated with the second water inlet channel, the second water inlet channel is communicated with the cooling cavity, and the first water return channel is communicated with the cooling cavity. The pressing cover is arranged to be of a side ring groove structure, so that the cooling cavity is formed to cool the pressing roller, and the pressing roller is simple in structure, high in rigidity, small in heat treatment deformation, large in heat dissipation area, good in cooling effect and wide in material application range.

Description

TECHNICAL FIELD

[0001] The utility model relates to pharmaceutical processing technical field, concretely relates to a kind of compression roller device and dry granulation with end face cooling. BACKGROUND

[0002] In pharmaceutical industry, dry granulation is widely used in processing and handling of various active pharmaceutical ingredients and one or more excipients. During the compression roller compaction process, the extrusion causes violent molecular vibration between the powders, which in turn generates a large amount of heat. A cooling system is needed to dissipate heat from the material to prevent high temperature from accelerating the degradation of active substances.

[0003] The cooling type compression roller in the prior art needs to have a cooling groove inside the compression roller. However, although the cooling groove inside the compression roller can cool the compression roller, the structure, processability and strength of the compression roller with the above-mentioned cooling groove are not ideal. SUMMARY

[0004] Therefore, the utility model provides a kind of compression roller device and dry granulation with end face cooling to solve the problem of the structure, processability and strength of the compression roller with cooling groove are not ideal.

[0005] In the first aspect, the utility model provides a kind of compression roller device with end face cooling, comprising: transmission shaft assembly, the transmission shaft assembly is provided with two, the rotating direction of two transmission shaft assembly is opposite;Compression roller, the compression roller is provided with two, two compression roller is respectively set in two transmission shaft assembly;Compression cover, the compression cover is detachably connected with the transmission shaft assembly, part of the compression cover is in abutment with the end face of the compression roller, the compression cover, the transmission shaft assembly and the compression roller are enclosed to form cooling cavity;First water inlet channel and first water return channel are formed in the transmission shaft assembly, second water inlet channel is formed in the compression cover, the first end of the first water inlet channel is suitable for connecting water inlet, the second end of the first water inlet channel and the first end of the second water inlet channel are communicated, the second end of the second water inlet channel is communicated with the cooling cavity, the first end of the first water return channel is suitable for connecting water outlet, the second end of the first water return channel is communicated with the cooling cavity, the second end of the first water return channel and the second end of the second water inlet channel are spaced apart.

[0006] Beneficial effects: by setting up compression cover as side ring groove structure, to form cooling cavity to cool the compression roller, the structure of compression roller is simple, high rigidity, heat treatment deformation is small, large heat dissipation area, cooling effect is excellent, and the application range of material is wide.

[0007] In an alternative embodiment, the cover includes a main body and a connecting part, the main body is connected with the connecting part, the connecting part is detachably connected with the transmission shaft assembly, the main body abuts against the end face of the compression roller, and the main body, the connecting part, the transmission shaft assembly and the compression roller enclose the cooling cavity, and the second water inlet channel is formed in the connecting part.

[0008] Beneficial effects: the connecting part is detachably connected with the transmission shaft assembly, so that the cover is convenient to overhaul or replace.

[0009] In an alternative embodiment, the cover further includes a boss part, the boss part is connected with the main body, and the boss part is arranged on the side of the main body away from the connecting part.

[0010] Beneficial effects: the boss part is arranged, so that the cover is convenient to assemble and disassemble.

[0011] In an alternative embodiment, the transmission shaft assembly includes a rotating shaft and a core pipe, along the axial direction of the rotating shaft, the rotating shaft is provided with a mounting hole and a through hole, the mounting hole is communicated with the through hole, the connecting part is detachably arranged in the mounting hole, the core pipe is embedded in the through hole, the first water inlet channel is formed in the core pipe, the first water return channel includes a first sub-channel and a second sub-channel, the first sub-channel is communicated with the second sub-channel, the first sub-channel is formed between the outer wall of the core pipe and the hole wall of the through hole, the first sub-channel is adapted to be communicated with the water return port, and the second sub-channel is formed in the rotating shaft and communicated with the cooling cavity.

[0012] In an alternative embodiment, the core pipe includes a pipe body and a bushing, the bushing is sleeved on one end of the pipe body close to the cover, the first water inlet channel is formed in the pipe body, and the first sub-channel is formed between the outer wall of the pipe body and the hole wall of the through hole.

[0013] Beneficial effects: the bushing is arranged to support the pipe body and ensure the smoothness of the first sub-channel.

[0014] In an alternative embodiment, the bushing includes a pipe seat sleeve and a supporting sleeve, the pipe seat sleeve is sleeved on one end of the pipe body close to the cover, and the supporting sleeve is sleeved on the pipe seat sleeve.

[0015] In an alternative embodiment, the compression roller device with end face cooling further includes a first sealing piece, the first sealing piece is arranged between the main body and the compression roller, a first sealing groove is formed in the main body, and the two sides of the first sealing piece are respectively arranged in abutment with the compression roller and the first sealing groove.

[0016] Beneficial effect: by setting the first sealing element between the compression roller and the main body, the sealing property of the compression roller device is improved, preventing the coolant from leaking from the contact surface between the main body and the compression roller.

[0017] In an alternative embodiment, the compression roller device with end face cooling further comprises a second sealing element, which is arranged between the compression roller and the transmission shaft assembly, and a second sealing groove is arranged on the transmission shaft assembly, and the two sides of the second sealing element are arranged in close contact with the compression roller and the second sealing groove respectively.

[0018] Beneficial effect: by setting the second sealing element between the compression roller and the transmission shaft assembly, the sealing property of the compression roller device is improved, preventing the coolant from leaking from the contact surface between the compression roller and the transmission shaft assembly.

[0019] In an alternative embodiment, the mounting hole is a threaded hole, and an external thread is arranged on the connecting portion, and the rotation direction of the thread is opposite to the rotation direction of the same group of shafts.

[0020] Beneficial effect: the rotation direction of the thread of the threaded hole is opposite to the rotation direction of the shaft, so that the thread locking of the compression cover mounting hole is firm during the rotation of the shaft.

[0021] In a second aspect, the utility model also provides a dry granulator, which comprises the compression roller device with end face cooling. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0023] Figure 1 It is a structure schematic view of the compression roller device with end face cooling of the utility model embodiment;

[0024] Figure 2 It is the A-A sectional view schematic view in Figure 1

[0025] Figure 3 It is the sectional view schematic view of the compression cover of the utility model embodiment;

[0026] Figure 4 It is the sectional view schematic view of the shaft of the utility model embodiment;

[0027] Figure 5 It is the sectional view schematic view of the compression roller of the utility model embodiment;

[0028] ​Figure 6 It is a section view schematic diagram of the core pipe of the utility model embodiment.

[0029] Mark explanation:

[0030] 10, transmission shaft assembly; 11, rotating shaft; 111, mounting hole; 112, through hole; 113, second sealing groove; 12, core pipe; 121, pipe body; 122, bushing; 1221, pipe seat sleeve; 1222, support sleeve; 20, compression roller; 21, connecting seat hole; 30, compression cover; 31, main body part; 311, first sealing groove; 32, connecting part; 33, boss part; 41, cooling cavity; 42, first water inlet channel; 43, first water return channel; 431, first sub-channel; 432, second sub-channel; 44, second water inlet channel; 50, first sealing element; 60, second sealing element. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be described clearly and completely below in combination with the drawings in the utility model embodiment. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0032] The embodiments of the utility model will be described below in combination with Figures 1 to 6

[0033] According to the embodiments of the utility model, in the first aspect, a compression roller device with end face cooling is provided, which comprises transmission shaft assembly 10, compression roller 20 and compression cover 30; two transmission shaft assemblies 10 are arranged, and the rotating directions of the two transmission shaft assemblies 10 are opposite; two compression rollers 20 are arranged, and the two compression rollers 20 are respectively sleeved on the two transmission shaft assemblies 10; the compression cover 30 is detachably connected with the transmission shaft assembly 10, part of the compression cover 30 abuts against the end face of the compression roller 20, and the compression cover 30, the transmission shaft assembly 10 and the compression roller 20 enclose a cooling cavity 41; the first water inlet channel 42 and the first water return channel 43 are formed in the transmission shaft assembly 10, the second water inlet channel 44 is formed in the compression cover 30, the first end of the first water inlet channel 42 is adapted to communicate with the water inlet, the second end of the first water inlet channel 42 and the first end of the second water inlet channel 44 are communicated, the second end of the second water inlet channel 44 is communicated with the cooling cavity 41, the first end of the first water return channel 43 is adapted to communicate with the water outlet, the second end of the first water return channel 43 is communicated with the cooling cavity 41, and the second end of the first water return channel 43 and the second end of the second water inlet channel 44 are arranged at intervals.

[0034] ​The pressure roller device with end face cooling in the embodiment has the following advantages: the pressure roller 20 is cooled by the cooling cavity 41 formed in the pressure cover 30, the cooling area is large, the pressure roller 20 is cooled without the need of opening a cooling groove in the pressure roller 20, the structural strength of the pressure roller 20 is high, and the heat treatment deformation is small; and the pressure roller device has a simple structure and is easy to process.

[0035] Specifically, please refer to Figure 5 , the pressure roller 20 is provided with a connecting seat hole 21, and the transmission shaft assembly 10 is arranged in the connecting seat hole 21; please refer to Figure 2 , the transmission shaft assembly 10 is provided with a shaft shoulder, and the side end face of the shaft shoulder is in abutment with the pressure roller 20 to limit the movement of the pressure roller 20 away from the pressure cover 30.

[0036] Further, please refer to Figure 2 , the pressure cover 30 is connected with the transmission shaft assembly 10 and is in abutment with the side end face of the pressure roller 20 away from the shaft shoulder to limit the pressure roller 20.

[0037] Specifically, the pressure roller 20 is provided with a texture on the material pressing circumferential surface to better compact the powder, which is beneficial to timely release pressure and outwardly pull out the formed material piece.

[0038] It should be noted that the cooling water or cooling liquid can be replaced by other substances such as cooling gas according to the needs of those skilled in the art.

[0039] Specifically, please refer to Figure 2 , the communication port of the second water inlet channel 44 and the communication port of the cooling cavity 41 and the communication port of the first water return channel 43 and the communication port of the cooling cavity are arranged on the upper side and the lower side of the drawing, respectively.

[0040] It should be noted that the communication port of the second water inlet channel 44 and the communication port of the first water return channel 43 and the communication port of the cooling cavity 41 are arranged in an upper and lower interval, which is beneficial to fill the entire cooling cavity 41 with cooling liquid and ensure the cooling effect.

[0041] In one embodiment, as shown in Figure 2 and Figure 3 , the pressure cover 30 includes a main body part 31 and a connecting part 32, the main body part 31 is connected with the connecting part 32, the connecting part 32 is detachably connected with the transmission shaft assembly 10, the main body part 31 is in abutment with the end face of the pressure roller 20, the main body part 31, the connecting part 32, the transmission shaft assembly 10 and the pressure roller 20 form the cooling cavity 41, and the second water inlet channel 44 is formed in the connecting part 32.

[0042] Specifically, in the embodiment, the main body part 31 and the connecting part 32 are integrally formed.

[0043] Of course, in other alternative embodiments, the main body 31 and the connecting portion 32 can also be provided in a split connection manner.

[0044] It is worth noting that the connecting portion 32 is detachably connected with the transmission shaft assembly 10, so as to facilitate the maintenance or replacement of the gland 30.

[0045] In one embodiment, as shown in Figure 2 and Figure 3 , the gland 30 further comprises a boss portion 33, the boss portion 33 is connected with the main body 31, and the boss portion 33 is arranged on the side of the main body 31 away from the connecting portion 32.

[0046] Specifically, the boss portion 33 is integrally formed with the main body 31.

[0047] Further, the boss portion 33 is provided in a regular polygon boss structure, and the gland 30 is tightened on the rotating shaft 11 by rotating the boss portion 33 using a wrench or the like tool.

[0048] It is worth noting that by providing the boss portion 33, the gland 30 is facilitated to be assembled and disassembled.

[0049] In one embodiment, as shown in Figure 2 , the transmission shaft assembly 10 comprises a rotating shaft 11 and a core pipe 12, along the axial direction of the rotating shaft 11, as shown in Figure 4 , the rotating shaft 11 is provided with a mounting hole 111 and a through hole 112, the mounting hole 111 is in communication with the through hole 112, the connecting portion 32 is detachably arranged in the mounting hole 111, and the core pipe 12 is embedded in the through hole 112. The core pipe 12 forms a first water inlet passage 42 therein, the first water return passage 43 comprises a first sub-passage 431 and a second sub-passage 432, the first sub-passage 431 is in communication with the second sub-passage 432, the first sub-passage 431 is formed between the outer wall of the core pipe 12 and the hole wall of the through hole 112, the first sub-passage 431 is adapted to be in communication with the water return port, and the second sub-passage 432 is formed in the rotating shaft 11. The second sub-passage 432 is in communication with the cooling cavity 41.

[0050] It is worth noting that by arranging the core pipe 12 in the through hole 112, the first water inlet passage 42 and the second sub-passage 432 are simultaneously arranged in the space of the through hole 112, thereby saving the space for establishing the passages and ensuring the structural strength of the rotating shaft 11.

[0051] In one embodiment, as shown in Figure 6 , the core pipe 12 comprises a pipe body 121 and a bushing 122, the bushing 122 is sleeved on one end of the pipe body 121 close to the gland 30, the first water inlet passage 42 is formed in the pipe body 121, and the first sub-passage 431 is formed between the outer wall of the pipe body 121 and the hole wall of the through hole 112.

[0052] Specifically, the bushing 122 supports the pipe body 121, thereby forming a first water inlet channel 42 inside the pipe body 121 for water inlet and a first sub-channel 431 between the outer wall of the pipe body 121 and the hole wall of the perforation 112 for water return.

[0053] It is worth noting that the bushing 122 is used to support the tube 121, ensuring the unobstructed flow of the first sub-channel 431.

[0054] In one embodiment, such as Figure 6 As shown, the bushing 122 includes a pipe seat sleeve 1221 and a support sleeve 1222. The pipe seat sleeve 1221 is fitted onto the end of the pipe body 121 near the pressure cap 30, and the support sleeve 1222 is fitted onto the pipe seat sleeve 1221.

[0055] It should be noted that the tube seat sleeve 1221 and the support sleeve 1222 prevent the liquid in the first sub-channel 431 from overflowing into the rotary hole.

[0056] In one embodiment, such as Figure 2 As shown, the pressure roller device with end face cooling also includes a first sealing element 50. The first sealing element 50 is disposed between the main body 31 and the pressure roller 20. A first sealing groove 311 is provided on the main body 31. The two sides of the first sealing element 50 are respectively fitted to the pressure roller 20 and the first sealing groove 311.

[0057] It is worth noting that by providing a first seal 50 between the pressure roller 20 and the main body 31, the sealing performance of the pressure roller device is improved, preventing coolant from leaking from the contact surface between the main body 31 and the pressure roller 20.

[0058] In one embodiment, such as Figure 2 As shown, the pressure roller device with end face cooling also includes a second seal 60. The second seal 60 is disposed between the pressure roller 20 and the drive shaft assembly 10. The drive shaft assembly 10 has a second sealing groove 113. The two sides of the second seal 60 are respectively fitted to the pressure roller 20 and the second sealing groove 113.

[0059] It is worth noting that by providing a second seal 60 between the pressure roller 20 and the drive shaft assembly 10, the sealing performance of the pressure roller device is improved, preventing coolant from leaking from the contact surface between the pressure roller 20 and the drive shaft assembly 10.

[0060] In one embodiment, the mounting hole 111 is a threaded hole, and the connecting part 32 is provided with an external thread, the direction of which is opposite to the direction of rotation of the rotating shaft 11 in the same group.

[0061] It should be noted that the gland 30 and the shaft 11 are detachably connected by threads. If the thread direction is the same as the direction of rotation of the shaft 11, the gland 30 may rotate in the loosening direction when the shaft 11 rotates, thus causing the gland 30 to detach from the shaft 11 and leak coolant.

[0062] It is worth mentioning that the thread direction is opposite to the rotation direction of the same group of rotating shafts 11, so that the thread locking of the grommet 30 mounting hole 111 is firm during the rotation of the rotating shaft 11.

[0063] According to the embodiment of the utility model, the second aspect further provides a dry granulator, which comprises the above-mentioned press roller device with end face cooling.

[0064] It is to be noted that the dry granulator comprises a cooling source, the cooling source comprises a water inlet and a water return, the first end of the first water inlet channel 42 is communicated with the water inlet of the cooling source, and the first end of the first water return channel 43 is communicated with the water return of the cooling source.

[0065] Although the embodiments of the utility model are described in combination with the drawings, various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations all fall within the scope defined by the utility model.

Claims

1. A press roll device with end face cooling, characterized in that The utility model relates to a transmission shaft assembly (10) is provided with two, two the rotation direction of transmission shaft assembly (10) is opposite, compression roller (20) is provided with two, two compression roller (20) is respectively set up on two transmission shaft assembly (10), compression cover (30) is detachably connected with transmission shaft assembly (10), and part compression cover (30) is with the end surface of compression roller (20) abut, and the cooling cavity (41) is enclosed between compression cover (30), transmission shaft assembly (10) and compression roller (20), first water inlet channel (42) and first backwater channel (43) are formed in transmission shaft assembly (10), and second water inlet channel (44) is formed in compression cover (30), and the first end of first water inlet channel (42) is suitable for communicating water inlet, and the second end of first water inlet channel (42) and the first end of second water inlet channel (44) are communicated, and the second end of second water inlet channel (44) is communicated with cooling cavity (41), and the first end of first backwater channel (43) is suitable for communicating water outlet, and the second end of first backwater channel (43) is communicated with cooling cavity (41), and the second end of first backwater channel (43) is spaced apart with the second end of second water inlet channel (44). Compression cover (30) includes main part (31) and connecting portion (32), main part (31) is connected with connecting portion (32), connecting portion (32) is detachably connected with transmission shaft assembly (10), and main part (31) is abutted with the end surface of compression roller (20), and the cooling cavity (41) is enclosed between main part (31), connecting portion (32), transmission shaft assembly (10) and compression roller (20), and second water inlet channel (44) is formed in connecting portion (32). Compression cover (30) further includes boss portion (33), boss portion (33) is connected with main part (31), and boss portion (33) is arranged on the side of main part (31) away from connecting portion (32). ​ ​ 2. The press roll arrangement with end face cooling according to claim 1, characterized in that ​ 3. The press roll arrangement with end face cooling according to claim 2, characterized in that ​ 4. The press roll arrangement with end face cooling according to claim 2, characterized in that The transmission shaft assembly (10) comprises a rotating shaft (11) and a core pipe (12), the rotating shaft (11) is provided with a mounting hole (111) and a through hole (112) along the axial direction of the rotating shaft (11), the mounting hole (111) is communicated with the through hole (112), the connecting part (32) is detachably arranged in the mounting hole (111), the core pipe (12) is embedded in the through hole (112), the first water inlet channel (42) is formed in the core pipe (12), the first water return channel (43) comprises a first sub-channel (431) and a second sub-channel (432), the first sub-channel (431) is communicated with the second sub-channel (432), the first sub-channel (431) is formed between the outer wall of the core pipe (12) and the hole wall of the through hole (112), and the first sub-channel (431) is adapted to be communicated with a water return port, and the second sub-channel (432) is formed in the rotating shaft (11) and communicated with the cooling cavity (41).

5. The press roll arrangement with end face cooling according to claim 4, characterized in that The core pipe (12) comprises a pipe body (121) and a bushing (122), the bushing (122) is sleeved on one end of the pipe body (121) close to the gland (30), and the first water inlet channel (42) is formed in the pipe body (121).

6. The press roll arrangement with end face cooling according to claim 5, characterized in that The bushing (122) comprises a pipe seat sleeve (1221) and a supporting sleeve (1222), the pipe seat sleeve (1221) is sleeved on one end of the pipe body (121) close to the gland (30), and the supporting sleeve (1222) is sleeved on the pipe seat sleeve (1221).

7. A press roll arrangement with end face cooling according to any one of claims 2-6, characterized in that The press roller device with end face cooling further comprises a first sealing piece (50), the first sealing piece (50) is arranged between the main body part (31) and the press roller (20), a first sealing groove (311) is formed in the main body part (31), and the two sides of the first sealing piece (50) are respectively arranged in close contact with the press roller (20) and the first sealing groove (311).

8. A press roll arrangement with end face cooling according to any one of claims 1-6, characterized in that The press roller device with end face cooling further comprises a second sealing piece (60), the second sealing piece (60) is arranged between the press roller (20) and the transmission shaft assembly (10), a second sealing groove (113) is formed in the transmission shaft assembly (10), and the two sides of the second sealing piece (60) are respectively arranged in close contact with the press roller (20) and the second sealing groove (113).

9. A press roll arrangement with end face cooling according to any one of claims 4-6, characterized in that The mounting hole (111) is a threaded hole, and the connecting part (32) is provided with external threads, the rotation direction of the threads is opposite to the rotation direction of the rotating shaft (11) of the same group.

10. A dry granulator characterized in that, The press roller device with end face cooling comprises any one of claims 1 to 9.

Images