Single-inner-ring-groove cooling compression roller device and dry type granulator
By setting a single annular groove and a sealing groove inside the pressure roller, the leakage and cracking problems of multi-inner-annular-groove pressure roller devices are solved, achieving efficient cooling of the pressure roller and extending its service life.
Patent Information
- Application Number
- CN202520209368.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-02-10
AI Technical Summary
In the existing technology, multi-inner-ring groove pressure roller devices are prone to leakage and cracking during long-term load operation, and their structure is complex and difficult to process.
The device employs a single inner ring groove cooling roller assembly. The drive shaft assembly and the roller are equipped with a single annular groove to increase the support area. A seal is installed in the sealing groove to optimize the structure and improve sealing performance and strength.
It reduces the likelihood of journal ring indentation, extends the service life of pressure rollers and drive shaft assemblies, and improves sealing performance and ease of processing.
Smart Images
Figure CN223846858U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to pharmaceutical processing technical field, concretely relates to a single inner annular groove cooling pressure roller device and dry granulation machine. BACKGROUND
[0002] In the pharmaceutical industry, dry granulation machine is widely used in processing and handling of various active pharmaceutical raw materials and one or more excipients. The powdery material is pushed to the pressure roller extrusion mechanism by the feeding mechanism, and is pressed into solid cake-shaped sheet by the pressure roller pair, and is processed by the whole granulation process of the granulation mechanism, so that the granular finished product with increased density, uniform particle size and good fluidity is obtained. In order to ensure the quality of granulation, the pressure roller often needs to be cooled.
[0003] The prior art cooling type pressure roller device has multiple annular water cooling grooves in the pressure roller, and the adjacent water cooling grooves are arranged in intervals and connected in series through the gaps. However, the structure of the multiple inner annular groove pressure roller combined with the radial sealing main shaft has complex processing technology, small contact area and large heat treatment deformation. When running under long-term load, the main shaft journal is prone to multiple annular groove indentations or cooling liquid leakage, and even cracking phenomenon may occur in severe cases. SUMMARY
[0004] Therefore, the utility model provides a single inner annular groove cooling pressure roller device to solve the problems of leakage and cracking of the multiple inner annular groove pressure roller.
[0005] In the first aspect, the utility model provides a single inner annular groove cooling pressure roller device, which comprises: a transmission shaft assembly, the transmission shaft assembly is provided with two, the rotation directions of the two transmission shaft assemblies are opposite; a pressure roller, the pressure roller is provided with two, the two pressure rollers are rotatably connected with the two transmission shaft assemblies respectively, along the axial direction of the transmission shaft assembly, an installation hole and an annular groove are arranged in the pressure roller, the annular groove is arranged with one, the annular groove is communicated with the installation hole; the transmission shaft assembly is embedded in the installation hole, the journal of the transmission shaft assembly and the annular groove form a cooling cavity, the transmission shaft assembly is formed with a water inlet channel and a water return channel, the water inlet channel is suitable for connecting the water inlet and the cooling cavity, and the water return channel is suitable for connecting the water return and the cooling cavity.
[0006] Beneficial effects: a single annular groove is arranged in the pressure roller, the supporting area is increased, the structure and strength of the pressure roller are optimized, the damage of the transmission shaft assembly to the annular groove when penetrating into the installation hole is reduced, the probability of annular indentation of the journal caused by high load operation is reduced, and the service life of the pressure roller and the transmission shaft assembly is prolonged.
[0007] In an alternative embodiment, the transmission shaft assembly and / or the compression roller is provided with a sealing groove; an abutting surface perpendicular to the axial direction of the transmission shaft assembly is formed between the transmission shaft assembly and the compression roller, the sealing groove is arranged on the abutting surface, and the single-inner-ring-groove cooling compression roller device further comprises a sealing member arranged in the sealing groove, and the two sides of the sealing member are respectively arranged in abutment with the transmission shaft assembly and the compression roller.
[0008] Beneficial effects: The sealing member is arranged on the abutting surface perpendicular to the axial direction of the transmission shaft assembly, which prevents the sealing member from being scratched by the annular groove when the transmission shaft assembly is installed, thereby ensuring the integrity of the sealing member and good sealing performance.
[0009] In an alternative embodiment, a plurality of sealing grooves are arranged at intervals, and a plurality of sealing members are arranged in one-to-one correspondence with the plurality of sealing grooves.
[0010] Beneficial effects: By arranging a plurality of sealing members, the sealing performance of the single-inner-ring-groove cooling compression roller device is further improved.
[0011] In an alternative embodiment, along the axial direction of the transmission shaft assembly, a plurality of sealing grooves are arranged on both sides of the cooling cavity.
[0012] Beneficial effects: The plurality of sealing grooves are arranged on both sides of the cooling cavity to prevent the liquid in the cooling cavity from leaking to both sides of the axial direction of the transmission shaft assembly.
[0013] In an alternative embodiment, the transmission shaft assembly comprises a rotating shaft and a core pipe, the rotating shaft is provided with a first channel, a second channel and an embedding hole, the core pipe is embedded in the embedding hole, a third channel is formed in the core pipe, a fourth channel is formed between the outer wall of the core pipe and the hole wall of the embedding hole, the first channel communicates with the third channel and the cooling cavity, and the first channel and the third channel form the water inlet channel in communication, and the second channel communicates with the fourth channel and the cooling cavity, and the second channel and the fourth channel form the water return channel in communication.
[0014] Beneficial effects: The core pipe is embedded in the embedding hole, which realizes the formation of the water inlet and water return sub-channels in one hole, reduces the processing difficulty, and ensures the structure and strength of the rotating shaft.
[0015] In an alternative embodiment, the rotating shaft comprises a coupling square head and a shaft body, the coupling square head is connected with the shaft body, the first channel, the second channel and the embedding hole are arranged in the shaft body, and the compression roller is further provided with a coupling seat hole, the coupling square head passes through the mounting hole and is installed in the coupling seat hole.
[0016] In an alternative embodiment, the embedding hole comprises a socket hole and a through hole, the socket hole being in communication with the first channel and the through hole, and part of the core pipe being embedded in the socket hole, the outer wall of the core pipe and the hole wall of the through hole forming the fourth channel.
[0017] In an alternative embodiment, the compression roller comprises a compression surface, the compression surface being adapted to contact the material to be processed, and the compression surface being provided with a texture structure.
[0018] Beneficial effects: By providing the texture structure on the compression surface, it is beneficial to better compact the powder material and to facilitate the release of the formed piece material.
[0019] In a second aspect, the utility model also provides a dry granulator, which comprises the single inner ring groove cooling compression roller device.
[0020] In an alternative embodiment, the dry granulator further comprises a cooling source, the cooling source comprising a water inlet and a water return, the water inlet being in communication with the water inlet channel, and the water return being in communication with the water return channel. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.
[0022] Figure 1 It is a front view structural schematic diagram of the single inner ring groove cooling compression roller device of the utility model embodiment.
[0023] Figure 2 It is a A-A sectional view structural schematic diagram of the utility model embodiment. Figure 1
[0024] Figure 3 It is a sectional view structural schematic diagram of the compression roller of the utility model embodiment.
[0025] Figure 4 It is a sectional view structural schematic diagram of the transmission shaft assembly of the utility model embodiment.
[0026] Figure 5 It is a sectional view structural schematic diagram of the compression roller assembly in the related art.
[0027] MARKED WITH REFERENCE NUMBERS:
[0028] 10, transmission shaft assembly; 11, rotating shaft; 111, embedded hole; 1111, pipe seat hole; 1112, through hole; 112, coupling square head; 113, shaft body; 114, plug; 12, core pipe; 20, compression roller; 21, mounting hole; 22, annular groove; 23, coupling seat hole; 31, cooling cavity; 32, water inlet channel; 321, first channel; 322, third channel; 33, water return channel; 331, second channel; 332, fourth channel; 40, sealing groove; 50, sealing element; 60, annular rib; 70, water cooling groove. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0030] The embodiments of the present application will be described below in combination with Figures 1 to 4 .
[0031] According to the embodiments of the present application, in a first aspect, a single-inner-annular-groove cooling compression roller device is provided, which comprises transmission shaft assemblies 10 and compression rollers 20. The transmission shaft assemblies 10 are provided in two, and the rotating directions of the two transmission shaft assemblies 10 are opposite. The compression rollers 20 are provided in two, and the two compression rollers 20 are rotatably connected with the two transmission shaft assemblies 10, respectively. Along the axial direction of the transmission shaft assemblies 10, the compression rollers 20 are provided with mounting holes 21 and annular grooves 22. The annular grooves 22 are provided in one, and the annular grooves 22 are in communication with the mounting holes 21. The transmission shaft assemblies 10 are embedded in the mounting holes 21. The shaft necks of the transmission shaft assemblies 10 and the annular grooves 22 form a cooling cavity 31. The transmission shaft assemblies 10 are provided with water inlet channels 32 and water return channels 33. The water inlet channels 32 are adapted to connect water inlets and the cooling cavity 31. The water return channels 33 are adapted to connect water outlets and the cooling cavity 31.
[0032] The single-inner-annular-groove cooling compression roller device of the present embodiments is provided with a single annular groove 22 in the compression roller 20, which increases the supporting area between the compression roller 20 and the transmission shaft assembly 10, optimizes the structure and strength of the compression roller 20, facilitates the machining of the compression roller 20, reduces the damage of the annular groove 22 when the transmission shaft assembly 10 penetrates into the mounting hole 21, reduces the probability of annular indentation of the shaft neck caused by high-load operation, and prolongs the service life of the compression roller 20 and the transmission shaft assembly 10.
[0033] It needs to be explained that in the related art, there are multiple annular water cooling grooves 70 inside the compression roller 20, the adjacent water cooling grooves 70 are arranged in intervals and connected in series through gaps, however, please refer to Figure 5 , multiple annular ribs 60 are formed between the adjacent water cooling grooves 70, in the assembly process of the transmission shaft assembly 10 and the compression roller 20, the transmission shaft assembly 10 is easy to scratch the multiple annular ribs 60, causing structural damage and leakage problems; and because there is a gap between the annular ribs 60 and the transmission shaft assembly 10, in the use process of the compression roller 20 and the transmission shaft assembly 10, the shaking between the transmission shaft assembly 10 and the compression roller 20 is easy to cause annular indentations on the transmission shaft assembly 10 and easy to cause the deformation and cracking of the annular ribs 60; the setting of the multiple annular ribs 60 also causes multiple stress points between the transmission shaft assembly 10 and the compression roller 20, which is easy to cause the cracking of the transmission shaft assembly 10. Therefore, in the embodiment, the multiple annular water cooling grooves 70 are optimized to form an annular groove 22, avoiding the formation of the annular ribs 60, thereby improving the structure and strength of the compression roller 20, and the setting of the single annular groove 22 facilitates the processing of the compression roller 20.
[0034] Specifically, please refer to Figure 2 and Figure 3 , along the axial direction of the compression roller 20, the annular groove 22 is arranged at the middle position of the compression roller 20, so as to facilitate the cooling of the entire compression roller 20.
[0035] It needs to be explained that in the embodiment, according to the different properties of the materials to be processed, the compression roller 20 is made of different materials such as non-toxic, corrosion-resistant, non-falling, not chemically reacting with the materials to be processed, adsorbing or releasing substances, etc.
[0036] In one embodiment, as shown in Figure 3 and Figure 4 , a sealing groove 40 is arranged on the transmission shaft assembly 10 and the compression roller 20, and an abutting surface perpendicular to the axial direction of the transmission shaft assembly 10 is formed between the transmission shaft assembly 10 and the compression roller 20, the sealing groove 40 is arranged on the abutting surface, and the single inner ring groove cooling compression roller device further comprises a sealing piece 50, the sealing piece 50 is arranged in the sealing groove 40, and the two sides of the sealing piece 50 are respectively arranged in close contact with the transmission shaft assembly 10 and the compression roller 20.
[0037] It needs to be explained that the sealing groove 40 can also be arranged only on the transmission shaft assembly 10 or the compression roller 20, for example, two sealing grooves 40 are arranged on the transmission shaft assembly 10, or two sealing grooves 40 are arranged on the compression roller 20.
[0038] It should be noted that in the related art, the sealing groove 40 is arranged on the contact surface parallel to the axial direction of the transmission shaft assembly 10 formed between the transmission shaft assembly 10 and the compression roller 20. However, when the transmission shaft assembly 10 and the compression roller 20 are cooperatively installed, the sealing element 50 in the sealing groove 40 will be sheared with the slot of the annular groove 22, which is easy to cause damage to the sealing element 50, thereby affecting the sealing performance of the device. Therefore, in the present embodiment, the sealing groove 40 is arranged on the abutting surface perpendicular to the axial direction of the transmission shaft assembly 10, thereby avoiding the shearing between the sealing element 50 and the slot of the annular groove 22.
[0039] It should be noted that the sealing element 50 is arranged on the abutting surface perpendicular to the axial direction of the transmission shaft assembly 10, which prevents the shearing between the sealing element 50 and the slot of the annular groove 22 when the transmission shaft assembly 10 is installed, thereby ensuring the integrity of the sealing element 50 and the good sealing performance.
[0040] In one embodiment, as shown in Figure 2 , the sealing groove 40 is provided with a plurality of sealing grooves 40, and the sealing element 50 is correspondingly provided with a plurality of sealing elements 50, which are one-to-one corresponding to the plurality of sealing grooves 40.
[0041] Specifically, the sealing groove 40 and the sealing element 50 are both provided with two sealing grooves 40 and two sealing elements 50.
[0042] It should be noted that the number of the sealing groove 40 and the sealing element 50 can be adjusted according to actual needs by those skilled in the art.
[0043] It should be noted that by arranging a plurality of sealing elements 50, the sealing performance of the single inner ring groove cooling compression roller device is further improved.
[0044] In one embodiment, as shown in Figure 2 , along the axial direction of the transmission shaft assembly 10, the plurality of sealing grooves 40 are respectively arranged on both sides of the cooling cavity 31.
[0045] Specifically, in the present embodiment, as shown in Figure 2 , two sealing grooves 40 are respectively arranged on both sides of the cooling cavity 31.
[0046] It should be noted that the plurality of sealing grooves 40 are respectively arranged on both sides of the cooling cavity 31 to prevent the liquid in the cooling cavity 31 from leaking along the axial direction of the transmission shaft assembly 10 to both sides of the sealing groove 40.
[0047] In one embodiment, as shown in Figure 2 and Figure 4As shown, the transmission shaft assembly 10 comprises a rotating shaft 11 and a core pipe 12, the rotating shaft 11 is provided with a first channel 321, a second channel 331 and an embedding hole 111, the core pipe 12 is embedded in the embedding hole 111, the core pipe 12 is formed with a third channel 322, the outer wall of the core pipe 12 and the hole wall of the embedding hole 111 form a fourth channel 332, the first channel 321 communicates with the third channel 322 and the cooling cavity 31, the first channel 321 and the third channel 322 form a water inlet channel 32, the second channel 331 communicates with the fourth channel 332 and the cooling cavity 31, and the second channel 331 and the fourth channel 332 form a water return channel 33.
[0048] It should be noted that, please refer to Figure 4 , in order to facilitate the opening and processing of the second channel 331, part of the channel is directly punched through, and the processing hole is plugged by a plug 114 to form a complete second channel 331, so as to prevent the cooling liquid from flowing out of the processing hole.
[0049] It is worth noting that the core pipe 12 is embedded in the embedding hole 111, which realizes the formation of water inlet and water return sub-channels in one hole, reduces the processing difficulty, and ensures the structure and strength of the rotating shaft 11.
[0050] In one embodiment, as Figure 4 shown, the rotating shaft 11 comprises a coupling square head 112 and a shaft body 113, the coupling square head 112 is connected with the shaft body 113, the first channel 321, the second channel 331 and the embedding hole 111 are arranged in the shaft body 113, and the pressure roller 20 is also provided with a coupling seat hole 23, the coupling square head 112 passes through the mounting hole 21 and is installed in the coupling seat hole 23.
[0051] Specifically, the coupling seat hole 23 is a square hole, which is used for combined connection with the coupling square head 112 of the rotating shaft 11, so as to ensure the accurate connection and positioning between the rotating shaft 11 and the pressure roller 20, and the reliable sealing.
[0052] In one embodiment, as Figure 4 shown, the embedding hole 111 comprises a pipe seat hole 1111 and a through hole 1112, the pipe seat hole 1111 communicates with the first channel 321 and the through hole 1112, as Figure 2 shown, part of the core pipe 12 is embedded in the pipe seat hole 1111, and the outer wall of the core pipe 12 and the hole wall of the through hole 1112 form the fourth channel 332.
[0053] Specifically, please refer to Figure 2 , part of the core pipe 12 is embedded in the pipe seat hole 1111 to isolate the fourth channel 332 and the first channel 321.
[0054] In one embodiment, the pressure roller 20 comprises a pressure surface, the pressure surface is suitable for contacting with the material to be processed, and the pressure surface is provided with a texture structure.
[0055] It is worth mentioning that, by setting the texture structure on the pressing surface, it is beneficial to better compact the powder, and beneficial to the pressure release and external pulling conveying of the formed sheet.
[0056] In the embodiment, the cooling liquid enters the third passage 322 in the core pipe 12 from the water inlet, flows through the first passage 321 of the rotating shaft 11 and enters the cooling cavity 31, and after the cooling liquid cools the pressure roller 20, the cooling liquid with the increased temperature flows through the fourth passage 332 through the second passage 331 of the rotating shaft 11 and finally flows into the water outlet.
[0057] According to the embodiment of the utility model, on the other hand, a dry granulator is also provided, which comprises the single inner ring groove cooling pressure roller device.
[0058] In one embodiment, the dry granulator further comprises a cooling source, and the cooling source comprises a water inlet and a water outlet, the water inlet is communicated with the water inlet passage 32, and the water outlet is communicated with the water outlet passage 33.
[0059] Specifically, in the embodiment, the cooling source is a cooling water source.
[0060] It is worth mentioning that, the cooling water source can be replaced by a cooling gas source or other flowable substances according to the needs of those skilled in the art.
[0061] Although the embodiments of the utility model are described in combination with the drawings, those skilled in the art can make various modifications and changes without departing from the spirit and scope of the utility model, and such modifications and changes all fall within the scope defined by the utility model.
Claims
1. A single inner groove cooling press roll device characterized by, The utility model relates to a single inner ring groove cooling pressure roller device, including: Transmission shaft assembly (10), two transmission shaft assembly (10) are provided with, and the rotation direction of two transmission shaft assembly (10) is opposite; Compression roller (20), two compression roller (20) are provided with, and two compression roller (20) are rotatablely connected with two transmission shaft assembly (10) respectively, along the axial direction of transmission shaft assembly (10), the installation hole (21) and annular groove (22) are opened in compression roller (20), the annular groove (22) is opened with one, and the annular groove (22) is communicated with installation hole (21); Transmission shaft assembly (10) is embedded in installation hole (21), and the journal of transmission shaft assembly (10) forms cooling cavity (31) with annular groove (22), and the water inlet channel (32) and water return channel (33) are formed in transmission shaft assembly (10), the water inlet channel (32) is suitable for communicating water inlet and cooling cavity (31), and the water return channel (33) is suitable for communicating water return and cooling cavity (31).
2. The single inner ring and groove cooled press roll apparatus of claim 1 wherein, Transmission shaft assembly (10) and / or the sealing groove (40) are opened in compression roller (20); The abutting surface perpendicular to transmission shaft assembly (10) axial direction is formed between transmission shaft assembly (10) and compression roller (20), the sealing groove (40) is opened on the abutting surface, and the single inner ring groove cooling pressure roller device further includes sealing element (50), the sealing element (50) is arranged in sealing groove (40), and the two sides of sealing element (50) are respectively arranged with transmission shaft assembly (10) and compression roller (20).
3. The single inner ring and groove cooled press roll apparatus of claim 2 wherein, The sealing groove (40) is provided with a plurality of sealing grooves (40), and a plurality of sealing grooves (40) are arranged at intervals, and a plurality of sealing elements (50) are correspondingly provided, and a plurality of sealing elements (50) are arranged one by one with a plurality of sealing grooves (40).
4. The single inner ring and groove cooled press roll apparatus of claim 3 wherein, Along the axial direction of transmission shaft assembly (10), a plurality of sealing grooves (40) are arranged on the two sides of cooling cavity (31).
5. The single inner groove cooling press roll apparatus according to any one of claims 1 to 4, wherein Transmission shaft assembly (10) includes shaft (11) and core pipe (12), first channel (321), second channel (331) and embedding hole (111) are opened in shaft (11), core pipe (12) is embedded in embedding hole (111), third channel (322) is formed in core pipe (12), fourth channel (332) is formed between the outer wall of core pipe (12) and the hole wall of embedding hole (111), first channel (321) is communicated with third channel (322) and cooling cavity (31), first channel (321) and third channel (322) are communicated and form water inlet channel (32), second channel (331) is communicated with fourth channel (332) and cooling cavity (31), and second channel (331) and fourth channel (332) are communicated and form water return channel (33).
6. The single inner ring and groove cooled press roll apparatus of claim 5 wherein, The rotating shaft (11) comprises a coupling square head (112) and a shaft body (113), the coupling square head (112) is connected with the shaft body (113), the first channel (321), the second channel (331) and the embedding hole (111) are arranged in the shaft body (113), the compression roller (20) is further provided with a coupling seat hole (23), the coupling square head (112) passes through the mounting hole (21) and is mounted in the coupling seat hole (23).
7. The single inner ring and groove cooled press roll apparatus of claim 5 wherein, The embedding hole (111) comprises a pipe seat hole (1111) and a through hole (1112), the pipe seat hole (1111) is communicated with the first channel (321) and the through hole (1112), part of the core pipe (12) is embedded in the pipe seat hole (1111), and the fourth channel (332) is formed between the outer wall of the core pipe (12) and the hole wall of the through hole (1112).
8. The single inner groove cooling press roll apparatus according to any one of claims 1 to 4, wherein The compression roller (20) comprises a compression surface, the compression surface is suitable for contacting with materials to be processed, and the compression surface is provided with a texture structure.
9. A dry granulator, characterized by The single inner ring groove cooling compression roller device comprises the single inner ring groove cooling compression roller device.
10. The dry granulator of claim 9, wherein The dry granulator further comprises a cooling source, the cooling source comprises a water inlet and a water return, the water inlet is communicated with the water inlet channel (32), and the water return is communicated with the water return channel (33).