A high-sealing explosion-proof dry granulator

Abstract

The utility model discloses a high sealing anti -explosion type dry granulator relates to dry granulation technical field, specifically includes: frame, first roller pressure spare, movable be located in the frame, first sealing element, be connected in first roller pressure spare, second sealing element, be connected in first sealing element, first sealing element, frame, second sealing element form the moving space of combination, when first roller pressure spare moves, first sealing element and second sealing element can move and keep the sealing of moving space, second roller pressure spare, fixedly arranged in one side of first roller pressure spare, and first roller pressure spare and second roller pressure spare cooperate to extrude material into the piece. The above -mentioned high sealing anti -explosion type dry granulator keeps the sealing of moving space through first sealing element and second sealing element along with first roller pressure spare's movement, guarantees the sealing effect of first roller pressure spare, avoids material leakage, guarantees production safety.

Description

Technical Field

[0001] This utility model relates to the field of dry granulation technology, and more specifically, to a high-sealing explosion-proof dry granulation machine. Background Technology

[0002] The dry granulation process involves first compressing powdered materials into sheets using roller pressing technology, followed by crushing, granulation, and screening to obtain granular materials that meet usage requirements. During roller pressing, changes in material thickness can cause movement of the rollers, affecting their original sealing performance and potentially leading to material leakage.

[0003] In conclusion, ensuring the sealing effect of roller-pressed parts is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a high-sealing explosion-proof dry granulation machine. By setting the first sealing element and the second sealing element, the moving space can be kept sealed, the sealing effect of the first roller pressing element can be guaranteed, material leakage can be avoided, and production safety and reliability can be guaranteed.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-sealing explosion-proof dry granulation machine includes:

[0007] frame;

[0008] The first roller is movably disposed within the frame;

[0009] The first sealing element is connected to the first roller pressing element;

[0010] The second seal is connected to the first seal. The first seal, the frame, and the second seal together form the moving space. When the first roller moves, the first seal and the second seal can move and maintain the seal on the moving space.

[0011] The second roller is fixedly disposed on one side of the first roller, and the first roller and the second roller cooperate to extrude the material into sheets.

[0012] Preferably, at least one of the first seal and the second seal is provided with a plurality of sealing grooves arranged along its moving direction, and a sealing ring is provided in the sealing groove;

[0013] The minimum distance between any two sealing grooves located on both sides of the moving space is greater than the minimum dimension value in a first direction of the moving space, which is parallel to the moving direction of the first roller.

[0014] Preferably, the first sealing element is a fixed flange, the inner ring of which is fitted onto the first rolling element, and the outer ring of which, together with the frame and the second sealing element, forms the moving space.

[0015] Preferably, a lip seal is provided between the inner ring of the fixed flange and the first roller forming member. The lip seal is fixed on both sides of the fixed flange in the axial direction so as to form a positive pressure sealing chamber with the outer periphery of the first roller forming member.

[0016] Preferably, the frame is provided with a movable groove, the inner ring of the second seal is sleeved on the first roller, and the outer ring of the second seal is slidably disposed in the movable groove for movement limitation.

[0017] Preferably, the frame is provided with a transmission area and a production area. The fixing block in the transmission area is connected to the front panel of the production area through a base plate. The fixing block, the base plate, and the front panel are all provided with openings and can communicate with each other to form a vacuum exhaust port. The vacuum exhaust port is connected to the vacuum cavity of the production area.

[0018] The vacuum exhaust port is connected to a negative pressure interface component, and the negative pressure interface component is provided with multiple third sealing components in the axial direction, which can be used for sealing between the fixed block and the substrate, sealing between the vacuum exhaust port and the front panel, and sealing between the vacuum exhaust port and the vacuum cavity, respectively.

[0019] Preferably, the transmission zone is provided with a transmission shaft that can extend into the production zone and pass through the front panel. The outer periphery of the portion of the transmission shaft located in the transmission zone is provided with a flange. A fourth seal is provided between the inner ring of the flange and the transmission shaft. A fifth seal is provided on the outer periphery of the portion of the transmission shaft that passes through the front panel.

[0020] The drive shaft is at least the first roller or the second roller.

[0021] Preferably, the frame is provided with a feed valve and a hopper cover. The feed valve is connected to the production area through the hopper cover to feed materials. The outer periphery of the hopper cover is provided with a sixth sealing element. The feed valve is pressed against the sixth sealing element to achieve a seal.

[0022] Preferably, the frame is provided with mounting holes, and the mounting holes are connected to atomizing nozzles that can extend into the production area for cleaning. The atomizing nozzles include an air inlet and a water inlet, and both the air inlet and the water inlet can communicate with the inner cavity of the production area.

[0023] The portion of the atomizing nozzle that passes through the frame is provided with multiple seventh seals between itself and the frame, and the outer circumferential dimension of the seventh seal is larger than the diameter of the mounting hole.

[0024] Preferably, the frame is provided with an air inlet and an air outlet, both of which are connected to the production area. The air inlet is connected to an air supply device through an air inlet pipe to supply clean air into the production area.

[0025] The exhaust vent is connected in sequence to a dust collector, a filter unit, and an exhaust fan via an exhaust duct, which is used to discharge suspended dust in the production area.

[0026] The high-sealing explosion-proof dry granulation machine provided by this utility model specifically includes a frame, a first roller press, a second roller press, a first seal, and a second seal. The first roller press is movably disposed within the frame, while the second roller press is fixed to one side of the first roller press. The first and second roller presses work together to compress materials into sheets. The first seal is connected to the first roller press, and the second seal is connected to the first seal; that is, the first seal, the second seal, and the first roller press can be considered as an integral component. The first seal, the second seal, and the frame can enclose and form a moving space. When the frame remains stationary and the first roller press moves, the integral component formed by the first seal, the second seal, and the first roller press moves accordingly. This ensures that the moving space is sealed by the first and second seals, thus guaranteeing the sealing effect of the first roller press, preventing material leakage, and ensuring safe and reliable production.

[0027] The beneficial effects of this utility model are as follows: by using the first and second sealing elements to maintain the seal of the moving space as the first roller press moves, the sealing effect of the first roller press is guaranteed, material leakage is avoided, and production safety is ensured. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the high-sealing explosion-proof dry granulation machine provided by this utility model;

[0030] Figure 2 for Figure 1 Enlarged view of region A in the middle;

[0031] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0032] Figure 4 Another structural schematic diagram of the high-sealing explosion-proof dry granulation machine provided by this utility model;

[0033] Figure 5 for Figure 4 Enlarged view of region B in the middle;

[0034] Figure 6 for Figure 5 A magnified view of a portion of the image;

[0035] Figure 7 This is another structural schematic diagram of the high-sealing explosion-proof dry granulation machine provided by this utility model;

[0036] Figure 8 for Figure 7 Enlarged view of region C;

[0037] Figure 9 for Figure 8 A magnified view of a portion of the image;

[0038] Figure 10 This is a schematic diagram showing the distribution of the atomizing nozzles provided by this utility model;

[0039] Figure 11 This is a schematic diagram of the atomizing nozzle provided by this utility model.

[0040] Figure 12 The production process control logic diagram provided by this utility model;

[0041] Figure 13 This is a schematic diagram of the dust explosion prevention operation process provided by this utility model.

[0042] Figures 1-13 In the accompanying drawings, the reference numerals include:

[0043] 1-Frame; 2-First roller pressing component; 3-Second roller pressing component; 4-Moving space; 5-First seal; 6-Second seal; 7-Positive pressure sealing chamber; 8-Lip seal; 9-Vacuum exhaust port; 10-Third seal; 11-Negative pressure interface component; 12-Vacuum chamber; 13-Fixing block; 14-Base plate; 15-Front panel; 16-Drive shaft; 17-Flange; 18-Fourth seal; 19-Fifth seal; 20-Feed valve; 21-Hopper cover; 22-Sixth seal; 23-Atomizing nozzle; 24-Air inlet; 25-Water inlet; 26-Seventh seal; 27-Air inlet; 28-Exhaust outlet; 29-Explosion-proof control panel; 30-Dust collector; 31-Filter unit; 32-Exhaust fan; 33-Exhaust duct; 34-Air inlet duct; 35-Electrical cabinet; 36-First valve body; 37-Second valve body; 38-Third valve body; 39-Vacuum pump; 40-Sealing ring;

[0044] 101-Moving trough; 102-Transmission area; 103-Production area. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0046] The core of this utility model is to provide a high-sealing explosion-proof dry granulation machine, which has a good sealing effect, can avoid material leakage and dust accumulation and explosion, and greatly protects operators from the harm of highly toxic and highly pharmacologically active chemicals, ensuring reliable and safe production operations.

[0047] The high-sealing explosion-proof dry granulation machine provided by this utility model includes a frame 1, a first roller press 2, a first seal 5, a second seal 6, and a second roller press 3. Please refer to [reference needed]. Figure 1 , Figure 2 , Figure 3 .

[0048] The first roller 2 is movably disposed within the frame 1, and the second roller 3 is fixedly disposed on one side of the first roller 2. The first roller 2 and the second roller 3 cooperate to extrude the material into sheets. The specific material is a powder, including but not limited to highly active drugs.

[0049] The first sealing element 5 is connected to the first roller pressing element 2, and the second sealing element 6 is connected to the first sealing element 5. The first sealing element 5, the second sealing element 6, and the first roller pressing element 2 are an integral component. When the thickness of the material changes, the first roller pressing element 2 will move, and the first sealing element 5 and the second sealing element 6 will move synchronously.

[0050] The first seal 5, the frame 1, and the second seal 6 together form a moving space 4. This moving space 4 is suitable for changes in sheet thickness caused by material extrusion. Specifically, the second roller 3 remains stationary, while the first roller 2 moves when the sheet thickness changes.

[0051] When the first roller 2 moves, the first seal 5 and the second seal 6 can move and maintain the seal on the moving space 4. The first seal 5 and the second seal 6 can achieve the effect of dynamic sealing, ensure the seal on the moving space 4, prevent material from entering the moving space 4, ensure the sealing effect of the first roller 2, ensure the sealing performance of the dry granulation machine, and ensure the safety and reliability of production.

[0052] In this embodiment, the first sealing element 5 and the second sealing element 6 can specifically be a sealing plate, a sealing plug, or other forms of seal, and a sealing ring can also be provided to enhance the sealing effect. The sealing ring can specifically be provided on the sealing plate or the sealing plug.

[0053] Taking one specific embodiment as an example, the first sealing element 5 and the second sealing element 6 are both sealing plates. A sealing ring is provided inside the sealing plate. The sealing ring can contact the outer side wall corresponding to the moving space 4 to perform sealing. The reliable sealing of the moving space 4 is ensured through the cooperation of the sealing ring and the sealing plate.

[0054] By setting the first sealing element 5 and the second sealing element 6, the moving space 4 can be kept sealed when the thickness of the material changes, which means that the sealing effect of the first roller pressing element 2 can be guaranteed, material leakage can be avoided, and the reliability and safety of production can be guaranteed.

[0055] Based on the above embodiments, please refer to Figure 2 , Figure 3 At least one of the first sealing element 5 and the second sealing element 6 is provided with a plurality of sealing grooves arranged along its moving direction, and a sealing ring 40 is provided in the sealing groove.

[0056] In one embodiment, the first sealing member 5 is provided with a plurality of sealing grooves arranged along its moving direction. By providing sealing rings 40 in the sealing grooves, the first sealing member 5 can reliably seal the moving space 4, prevent materials from entering the moving space 4, and ensure reliable sealing of the first roller pressing member 2.

[0057] In another embodiment, the second sealing member 6 is provided with a plurality of sealing grooves arranged along its moving direction. By providing sealing rings 40 in the sealing grooves, the second sealing member 6 can reliably seal the moving space 4, prevent materials from entering the moving space 4, and ensure reliable sealing of the first roller pressing member 2.

[0058] In another embodiment, both the first sealing element 5 and the second sealing element 6 are provided with multiple sealing grooves arranged along their moving direction. By installing sealing rings 40 within the sealing grooves, reliable and effective sealing of the moving space by the first sealing element 5 and the second sealing element 6 can be ensured, thus guaranteeing the sealing effect of the first roller pressing element 2. Specifically, the sealing grooves on the first sealing element 5 and the second sealing element 6 can be located at the same height or at different heights, depending on the actual processing conditions.

[0059] In the above embodiments, the specific form of the sealing groove is not limited, and the number of sealing grooves can be set to two, three or four to fully ensure the sealing effect.

[0060] The minimum distance between any two sealing grooves located on both sides of the moving space 4 is greater than the minimum dimension of the moving space 4 in the first direction, which is parallel to the moving direction of the first roller 2. If a sealing groove is provided on each side of the moving space 4 corresponding to the first sealing member 5 or the second sealing member 6, the distance between these two sealing grooves is greater than the minimum dimension of the moving space 4 in the first direction, so as to ensure a reliable seal for the moving space 4.

[0061] If two sealing grooves are respectively provided on the two sides of the moving space 4 corresponding to the first sealing member 5 or the second sealing member 6, the distance between the sealing grooves closest to the moving space 4 on each side is greater than the minimum size value of the moving space 4 in the first direction, so as to ensure reliable sealing of the moving space 4.

[0062] In this embodiment, if the first roller 2 moves in a direction relatively away from the second roller 3, the moving space 4 will gradually decrease. During this process, the sealing ring 40 will abut against the side wall outside the moving space 4 so that the first sealing member 5 and the second sealing member 6 can still maintain the seal on the moving space 4 during the movement, thus ensuring the sealing effect of the first roller 2.

[0063] Based on any of the above embodiments, please refer to Figure 2 , Figure 3 The first sealing element 5 is specifically a fixed flange. The inner ring of the fixed flange is fitted onto the first roller pressing element 2, and the outer ring of the fixed flange can be enclosed with the frame 1 and the second sealing element 6 to form a moving space 4.

[0064] The fixed flange has an annular hole on the side near the second seal 6 for connection, so that the second seal 6 and the fixed flange can be reliably fixed.

[0065] The outer ring of the fixed flange specifically has a vertical part and a horizontal part, such as Figure 3 As shown, the vertical part, the horizontal part, the frame 1, and the second seal 6 can enclose and form a relatively sealed moving space 4. During the movement of the first roller 2, the fixed flange and the second seal 6 move synchronously and together can seal the moving space 4.

[0066] Based on any of the above embodiments, please refer to Figure 2 , Figure 3 A lip seal 8 is provided between the inner ring of the fixed flange and the first roller pressing member 2. The lip seal 8 is fixed on both sides of the fixed flange in the axial direction so as to form a positive pressure sealing chamber 7 with the outer periphery of the first roller pressing member 2.

[0067] Specifically, the lip seal 8 is fixed on both sides of the fixed flange along the axial direction and can contact the outer periphery of the first roller press 2. Compressed air is introduced into the positive pressure sealing chamber 7 through the air channel on the fixed flange so that the lip seal 8 can abut against the outer periphery of the first roller press 2 to form a certain sealing effect, prevent material from entering the positive pressure sealing chamber 7, and ensure reliable sealing.

[0068] For the second roller pressing component 3, a lip seal 8 can also be provided on the outer periphery to ensure the sealing effect. Similarly, positive pressure is maintained by introducing compressed air to ensure the sealing effect of the second roller pressing component 3.

[0069] Based on any of the above embodiments, please refer to Figure 3 The frame 1 is provided with a moving groove 101. The inner ring of the second sealing member 6 is sleeved on the first roller pressing member 2, and the outer ring of the second sealing member 6 is slidably disposed in the moving groove 101 for movement limitation.

[0070] Specifically, the moving groove 101 is a circular groove, square groove, or other shaped groove opened on the frame 1. When the second seal 6 moves, it can be limited within the moving groove 101 to ensure the accuracy and reliability of the movement, which in turn ensures the reliable sealing effect of the second seal 6.

[0071] Furthermore, a slider groove structure can be set on both the moving groove 101 and the second sealing member 6 to further ensure the accuracy of the movement of the second sealing member 6, that is, to ensure the reliability of the movement of the first roller pressing member 2 and the first sealing member 5, that is, to ensure a reliable and effective seal for the first roller pressing member 2.

[0072] When the second sealing element 6 moves within the moving groove 101, it can always maintain the seal on the moving space 4, that is, it can always maintain the sealing effect of this space, ensuring the reliable and effective sealing of the first roller pressing element 2.

[0073] Based on any of the above embodiments, please refer to Figure 4 , Figure 5 , Figure 6 The frame 1 is provided with a transmission area 102 and a production area 103. The fixed block 13 in the transmission area 102 is connected to the front panel 15 of the production area 103 through the base plate 14. The fixed block 13, the base plate 14, and the front panel 15 are all provided with openings and can be connected to form a vacuum exhaust port 9. The vacuum exhaust port 9 is connected to the vacuum chamber 12 of the production area 103.

[0074] The vacuum exhaust port 9 is connected to a negative pressure interface 11. The negative pressure interface 11 is hollow inside, so as to form a gas channel that connects to the vacuum chamber 12, allowing gas to be discharged from the vacuum chamber 12 to improve the compactness of the material.

[0075] The negative pressure interface 11 is provided with a plurality of third seals 10 in the axial direction. Here, the plurality of third seals 10 refers to at least three seals provided for sealing between the fixing block 13 and the base plate 14, sealing between the vacuum exhaust port 9 and the front panel 15, and sealing between the vacuum exhaust port 9 and the vacuum chamber 12, respectively.

[0076] In this embodiment, the vacuum exhaust port 9 is connected to the vacuum pump 39, which generates a vacuum to expel gas from the powder during the feeding process, improving the material's density and ensuring the effectiveness of subsequent rolling. The use of multiple third seals 10 ensures channel sealing while meeting the vacuum exhaust function, guaranteeing the overall sealing effect of the dry granulation machine.

[0077] In addition to the multiple third seals 10, the specific control logic for different production processes is as follows; please refer to [the relevant documentation]. Figure 12 .

[0078] In the initial state: the first valve body 36 is normally closed, the second valve body 37 is normally open, and the third valve body 38 is normally open;

[0079] Under pressure holding conditions: the third valve body 38 is open, and compressed air enters the cavity of production area 103 through the atomizing nozzle 23, causing positive pressure inside the cavity; the second valve body 37 is open, the first valve body 36 is closed, the vacuum pump 39 cannot be connected to the vacuum exhaust port 9, and the cavity is sealed.

[0080] Production process: The first valve body 36 is opened, the vacuum pump 39 is connected to the vacuum exhaust port 9, and the gas in the material in the production area 103 cavity is discharged during the feeding process;

[0081] Cleaning process: The first valve body 36, the second valve body 37, and the third valve body 38 are all opened. Compressed air is supplied to the vacuum exhaust port 9 through the first valve body 36 and the second valve body 37 to form positive pressure and prevent cleaning water from flowing back into the vacuum pump 39.

[0082] Based on any of the above embodiments, please refer to Figure 7 , Figure 8 , Figure 9 The transmission area 102 is provided with a transmission shaft 16 that can extend into the production area 103 and pass through the front panel 15. The outer periphery of the portion of the transmission shaft 16 located in the transmission area 102 is provided with a flange 17. A fourth seal 18 is provided between the inner ring of the flange 17 and the transmission shaft 16. A fifth seal 19 is provided on the outer periphery of the portion of the transmission shaft 16 that passes through the front panel 15.

[0083] The fourth seal 18 fixed to the flange 17 and the fifth seal 19 fixed to the front panel 15 are preferably lip seals to ensure the sealing effect of the drive shaft 16 through positive pressure design. The installation of the fourth seal 18 and the fifth seal 19 ensures the sealing effect of the drive shaft 16 that runs through the transmission zone 102 and the production zone 103, thereby guaranteeing the sealing effect of the entire dry granulation machine.

[0084] The drive shaft 16 is at least the first roller 2 or the second roller 3. Here, "at least" means that it can also be other drive shafts 16 that pass through the transmission area 102 and the production area 103, and is not limited to the first roller 2 and the second roller 3.

[0085] In addition, sealing elements need to be added to the threaded holes and pin holes that connect the transmission zone 102 and the production zone 103 to prevent material leakage from the connection holes and ensure the sealing effect.

[0086] Based on any of the above embodiments, please refer to Figure 7 , Figure 8 The frame 1 is equipped with a feed valve 20 and a hopper cover 21. The feed valve 20 is connected to the production area 103 through the hopper cover 21 to feed materials. The outer periphery of the hopper cover 21 is provided with a sixth sealing element 22. The feed valve 20 is pressed against the sixth sealing element 22 to achieve a seal.

[0087] The feed valve 20 is a valve body that can control the feeding of materials to the production area 103. The feed valve 20 is connected to the hopper cover 21 to realize the operation requirements of opening or closing the feeding. After the feed valve 20 and the hopper cover 21 are connected, they can be pressed against the sixth sealing element 22 to ensure the sealing of the feeding process.

[0088] In this embodiment, the sixth sealing element 22 is specifically disposed on the outer periphery of the hopper cover 21. When the feed valve 20 moves downward and docks with the hopper cover 21, the sixth sealing element 22 enables the sealed transport of materials and ensures the sealing effect.

[0089] Based on any of the above embodiments, please refer to Figure 10 , Figure 11The frame 1 is provided with mounting holes, which are connected to atomizing nozzles 23 that can extend into the production area 103 for cleaning. The atomizing nozzles 23 include an air inlet 24 and a water inlet 25, both of which are connected to the inner cavity of the production area 103. Air and water are introduced through the air inlet 24 and water inlet 25 respectively to achieve the cleaning effect.

[0090] Specifically, the water inlet 25 can be filled with a liquid with a certain degree of coldness to achieve rapid cooling within the production area 103 and ensure the reliable service life of the components.

[0091] The portion of the atomizing nozzle 23 that passes through the frame 1 is provided with multiple seventh seals 26 between itself and the frame 1. The outer circumferential dimension of the seventh seal 26 is larger than the diameter of the mounting hole. Here, the seventh seal 26 is as follows: Figure 11 As shown, two can be set, specifically for sealing the connection between the atomizing nozzle 23 and the frame 1, to prevent material leakage from the gap at the connection point.

[0092] Through the sealing measures described above, the feeding process is sealed, the drive shaft 16 is sealed, the moving first roller 2 is sealed, the atomizing nozzle 23 is sealed, and the channels at the vacuum exhaust port 9 are sealed, so that the dry granulator as a whole has a better sealing effect.

[0093] The specific verification measures for the sealing reliability of the testing equipment are as follows:

[0094] Operation process:

[0095] Before feeding materials, an OEB5 automatic pressure holding test is performed to ensure the sealing effect of the cavity: air is supplied to the inside of the cavity in the production area 103 through the air inlet 24 of the atomizing nozzle 23 to make the cavity a positive pressure environment and perform a pressure holding test.

[0096] (1) Start timing from 150 Pa for 5 minutes to observe whether the pressure inside the cavity is greater than 100 Pa.

[0097] If yes, the pressure holding test is successful;

[0098] If not, proceed to the following stage:

[0099] The pressure inside the cavity is started at 100 Pa and observed for 3 minutes. Check if the pressure inside the cavity is greater than 75 Pa.

[0100] If yes, the pressure holding test is successful;

[0101] If not, the pressure holding test fails.

[0102] (2) After the equipment is started, the negative pressure control of the granulation chamber in the production area 103 is carried out through the negative pressure isolator system. The exhaust proportional valve is equipped to realize the PID (Proportional-Integral-Derivative Control) adjustment of the chamber pressure, so as to ensure that the chamber maintains a stable negative pressure during the production process and prevent dust leakage.

[0103] In the above process, the occupational exposure limit range corresponding to OEB5 level is usually less than 1 μg / m³, mainly used in the pharmaceutical industry to assess and control the exposure risk of workers to chemicals during occupational activities.

[0104] Based on any of the above embodiments, please refer to Figure 13 The frame 1 is equipped with an air inlet 27 and an air outlet 28. Both the air inlet 27 and the air outlet 28 are connected to the production area 103. The air inlet 27 is connected to the air supply equipment through the air inlet pipe 34 to introduce clean air into the production area 103.

[0105] The exhaust vent 28 is connected in sequence to a dust collector 30, a filter unit 31, and an exhaust fan 32 via an exhaust duct 33 to remove suspended dust from the production area 103. Suspended dust is removed through negative pressure suction. This efficient dust removal measure prevents explosions caused by dust accumulation, ensuring the health and safety of operators and effectively preventing potential explosion hazards caused by dust buildup. It also efficiently monitors material leaks during the production process, particularly improving production safety in the pharmaceutical and chemical processing industries, such as for highly active drugs.

[0106] Regarding dust explosion prevention measures, an electrical cabinet 35 and an explosion-proof operating panel 29 connected to it are also provided, enabling operators to reliably carry out efficient dust removal operations.

[0107] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0108] The above provides a detailed description of a high-sealing explosion-proof dry granulation machine provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A high-sealing explosion-proof dry granulation machine, characterized in that, include: Rack (1); The first roller pressing component (2) is movably disposed within the frame (1); The first sealing element (5) is connected to the first roller pressing element (2); The second seal (6) is connected to the first seal (5). The first seal (5), the frame (1), and the second seal (6) together form a moving space (4). When the first roller (2) moves, the first seal (5) and the second seal (6) can move and maintain the seal on the moving space (4). The second roller (3) is fixedly disposed on one side of the first roller (2). The first roller (2) and the second roller (3) cooperate to extrude the material into sheets.

2. The high-sealing explosion-proof dry granulation machine according to claim 1, characterized in that, At least one of the first seal (5) and the second seal (6) is provided with a plurality of sealing grooves arranged along its moving direction, and a sealing ring (40) is provided in the sealing groove. The minimum distance between any two sealing grooves located on both sides of the moving space (4) is greater than the minimum dimension value in the first direction of the moving space (4), which is parallel to the moving direction of the first roller (2).

3. The high-sealing explosion-proof dry granulation machine according to claim 1, characterized in that, The first sealing element (5) is specifically a fixed flange. The inner ring of the fixed flange is fitted onto the first roller pressing element (2). The outer ring of the fixed flange can be enclosed with the frame (1) and the second sealing element (6) to form the moving space (4).

4. The high-sealing explosion-proof dry granulation machine according to claim 3, characterized in that, A lip seal (8) is provided between the inner ring of the fixed flange and the first roller (2). The lip seal (8) is fixed on both sides of the fixed flange in the axial direction so as to form a positive pressure sealing chamber (7) with the outer periphery of the first roller (2).

5. The high-sealing explosion-proof dry granulation machine according to any one of claims 1 to 4, characterized in that, The frame (1) is provided with a moving groove (101), the inner ring of the second seal (6) is sleeved on the first roller (2), and the outer ring of the second seal (6) is slidably disposed in the moving groove (101) for movement limitation.

6. The high-sealing explosion-proof dry granulation machine according to claim 5, characterized in that, The frame (1) is provided with a transmission area (102) and a production area (103). The fixed block (13) in the transmission area (102) is connected to the front panel (15) of the production area (103) through the base plate (14). The fixed block (13), the base plate (14), and the front panel (15) are all provided with openings and can be connected to form a vacuum exhaust port (9). The vacuum exhaust port (9) is connected to the vacuum cavity (12) of the production area (103). The vacuum exhaust port (9) is connected to a negative pressure interface component (11). The negative pressure interface component (11) is provided with a plurality of third seals (10) in the axial direction, which can be used for sealing between the fixed block (13) and the substrate (14), sealing between the vacuum exhaust port (9) and the front panel (15), and sealing between the vacuum exhaust port (9) and the vacuum cavity (12).

7. The high-sealing explosion-proof dry granulation machine according to claim 6, characterized in that, The transmission area (102) is provided with a transmission shaft (16) that can extend into the production area (103) and pass through the front panel (15). The outer periphery of the portion of the transmission shaft (16) located in the transmission area (102) is provided with a flange (17). A fourth seal (18) is provided between the inner ring of the flange (17) and the transmission shaft (16). A fifth seal (19) is provided on the outer periphery of the portion of the transmission shaft (16) that passes through the front panel (15). The drive shaft (16) is at least the first roller (2) or the second roller (3).

8. The high-sealing explosion-proof dry granulation machine according to claim 7, characterized in that, The frame (1) is provided with a feed valve (20) and a hopper cover (21). The feed valve (20) is connected to the production area (103) through the hopper cover (21) to feed materials. The outer periphery of the hopper cover (21) is provided with a sixth sealing element (22). The feed valve (20) is pressed against the sixth sealing element (22) to achieve sealing.

9. The high-sealing explosion-proof dry granulation machine according to claim 8, characterized in that, The frame (1) is provided with mounting holes, and the mounting holes are connected to atomizing nozzles (23) that can extend into the production area (103) for cleaning. The atomizing nozzles (23) include an air inlet (24) and a water inlet (25), and both the air inlet (24) and the water inlet (25) can communicate with the inner cavity of the production area (103). The portion of the atomizing nozzle (23) that passes through the frame (1) is provided with a plurality of seventh seals (26) between it and the frame (1), and the outer circumferential dimension of the seventh seals (26) is larger than the diameter of the mounting hole.

10. The high-sealing explosion-proof dry granulation machine according to claim 9, characterized in that, The frame (1) is provided with an air inlet (27) and an air outlet (28). The air inlet (27) and the air outlet (28) are both connected to the production area (103). The air inlet (27) is connected to the air supply equipment through the air inlet pipe (34) for supplying clean air into the production area (103). The exhaust vent (28) is connected in sequence to a dust collector (30), a filter unit (31), and an exhaust fan (32) via an exhaust pipe (33) to discharge suspended dust in the production area (103).

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