Kneading device for a kneader

Abstract

The application belongs to the technical field of kneaders, and discloses a kneading device for a kneader, which comprises a kneading box, a kneading cavity horizontally and throughly arranged in the kneading box, a feeding hole communicated with the kneading cavity and downwardly arranged on the top of the kneading box, a front end cover detachably arranged on the front end of the kneading cavity, two groups of stirring assemblies horizontally arranged on the front end cover, a rear end cover arranged on the rear end of the kneading cavity, two first step holes corresponding to the stirring assemblies and arranged on the rear end cover, a plurality of threaded holes arranged on the rear end cover, a plurality of through holes corresponding to the threaded holes and arranged on the front end cover, a screw rod rotatably arranged in the through hole, an external thread arranged on the end of the screw rod and matched with the threaded hole, and a driving assembly arranged on the rear side of the rear end cover and used for driving the stirring assembly to rotate. The detachable front end cover and the stirring assembly are convenient for material taking out and stirring assembly cleaning, and the whole operation is simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of kneading machine technology, and in particular to a kneading device for a kneading machine. Background Technology

[0002] A medical kneader is a mechanical device used for high-precision mixing, stirring, and kneading of materials. Its core function is to thoroughly and uniformly mix, react, plasticize, or slurry multiple materials (such as powders, liquids, and pastes) under vacuum and controlled temperature conditions to ensure that the final product meets the stringent regulatory requirements for medical device and pharmaceutical production. The kneading device is the core working component of the kneader, and its structure directly affects the uniformity of material mixing, kneading efficiency, and ease of operation.

[0003] In the existing technology, the kneading device of a traditional kneader mainly includes a kneading chamber and a stirring component. The stirring component is installed in the kneading chamber. The material is added and removed by setting an openable top cover on the top of the kneading chamber. However, this structure is more troublesome to remove material. The kneading chamber needs to be turned over to pour out all the material. Also, some material will stick to the stirring component, making cleaning difficult. Utility Model Content

[0004] To solve the above problems, this utility model provides a kneading device for a kneading machine.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a kneading device for a kneader, comprising a kneading box, wherein a kneading cavity is horizontally opened through the kneading box, and a feed hole communicating with the kneading cavity is opened downward at the top of the kneading box. A front cover is detachably provided on the front end of the kneading box at the front end of the kneading cavity, and two sets of stirring components are horizontally arranged on the front end cover. A rear end cover is provided on the rear end of the kneading box at the rear end of the kneading cavity, and two first step holes corresponding to the stirring components are provided on the rear end cover. A plurality of threaded holes are opened on the rear end cover, and a plurality of through holes are correspondingly opened on the front end cover. A screw is rotatably arranged in the through holes, and the end of the screw is provided with an external thread to form a helical engagement with the threaded hole. A drive component for driving the stirring components to rotate is also provided on the rear side of the rear end cover.

[0006] By adopting the above technical solution, a detachable front cover is set and the mixing component is installed on the front cover. After mixing is completed, the front cover and the mixing component can be removed together, making it easy to remove the material in the kneading chamber. The material adhering to the mixing component is also easy to clean, making the overall operation simple and convenient. Furthermore, a threaded hole and a screw are set. The front cover can be locked onto the kneading box by screwing the screw into the threaded hole, which also facilitates disassembly after use. The disassembly and assembly are convenient.

[0007] Furthermore, the kneading cavity is a cavity composed of two intersecting circular holes, and the stirring assembly includes a rotating shaft rotatably mounted on the front end cover. The rotating shaft is provided with curved stirring blades, and the two sets of stirring assemblies are respectively located in the two circular holes and the rotating shaft is arranged concentrically with the corresponding circular holes.

[0008] By adopting the above technical solution, the kneading chamber is set as a cavity composed of two intersecting circular holes, and the two sets of stirring components are located in the two circular holes respectively. In this way, when the rotating shaft drives the stirring blades to rotate and stir, there are no dead corners in the entire cavity, ensuring that the material is stirred evenly.

[0009] Furthermore, the front end cover has two second-step holes horizontally spaced apart. The second-step holes are divided into a large-diameter hole, a medium-diameter hole, and a small-diameter hole. A front bearing is installed in the large-diameter hole, a front sealing ring is installed in the medium-diameter hole, and a front annular groove is opened on the hole wall of the small-diameter hole. A front sealing ring is installed in the front annular groove. The end of the rotating shaft near the front end cover is fixed in the inner ring of the front bearing, and the shaft body forms a rotation seal with the front sealing ring and the front sealing ring respectively.

[0010] By adopting the above technical solution, large-diameter holes, medium-diameter holes, small-diameter holes, front bearings, front sealing rings, and front sealing rings are set up. The front bearings ensure the rotation accuracy of the shaft, and the front sealing rings and front sealing rings form a double seal to ensure the sealing effect.

[0011] Furthermore, a T-shaped sleeve is provided inside the first stepped hole, and a rear annular groove is formed on the outer wall of the T-shaped sleeve. A rear sealing ring is provided in the rear annular groove, and the T-shaped sleeve and the first stepped hole form a sealing fit through the rear sealing ring. A first inner annular groove and a second inner annular groove are formed on the inner wall of the T-shaped sleeve. An inner sealing ring is provided in the first inner annular groove. An inner sealing ring is provided in the second inner annular groove. The end of the rotating shaft away from the front end cover is placed inside the T-shaped sleeve and forms a rotational seal with the inner sealing ring and the inner sealing ring.

[0012] By adopting the above technical solution, a T-shaped sleeve, a rear annular groove, and a rear sealing ring are installed. The rear sealing ring seals against the stepped hole, allowing the T-shaped sleeve to be disassembled and replaced independently without disassembling the entire rear end cover, thus reducing the difficulty and cost of sealing component maintenance. The installation of a first inner annular groove, a second inner annular groove, an inner sealing ring, and an inner sealing ring on the inner wall of the sleeve provides a double seal for the rotating shaft, solving the problem of easy wear and failure of the single seal in traditional equipment and significantly improving the long-term sealing stability of the equipment.

[0013] Furthermore, the drive assembly includes a drive box and a drive motor disposed on the rear side of the rear end cover. Two connecting shafts are rotatably disposed inside the drive box. The two connecting shafts are arranged coaxially with two rotating shafts respectively. The end of each connecting shaft near the rear end cover passes through the drive box and is provided with a connecting sleeve. The connecting sleeve has an oblong hole. The end of each rotating shaft away from the front end cover is provided with a connecting block that mates with the oblong hole. One connecting shaft is provided with a small gear, and the other connecting shaft is provided with a large gear. The small gear meshes with the large gear. The output shaft of the drive motor is provided with a drive shaft. The drive shaft is connected to the connecting shaft with the small gear by a coupling.

[0014] By adopting the above technical solution, a connecting sleeve, a waist-shaped hole, and a connecting block are set to achieve rapid docking and separation of the connecting shaft and the rotating shaft; a small gear and a large gear are set, and the meshing of the small gear and the large gear achieves different speed ratios of the two sets of connecting shafts, so that the two sets of stirring components rotate at different speeds, which can ensure uniform mixing of materials and reduce mixing dead zones.

[0015] Furthermore, the front cover is also provided with two caps that cover the front bearing.

[0016] By adopting the above technical solution and setting a cap, the front bearing on the front cover and the end of the rotating shaft are protected.

[0017] Furthermore, the bottom of the kneading box and the two side walls parallel to the length direction of the kneading cavity are provided with continuously arranged oil grooves, and one of the side walls is provided with an oil inlet pipe and an oil outlet pipe communicating with the oil grooves.

[0018] By adopting the above technical solution, setting up an oil tank, an oil inlet pipe, and an oil outlet pipe, heat transfer oil can be introduced to heat the kneading chamber, making the temperature distribution inside the kneading chamber more uniform, avoiding the solidification or deterioration of the material due to local temperature differences, ensuring that the material is kneaded at the optimal process temperature, and significantly improving the mixing uniformity and product quality stability.

[0019] In summary, the present invention has the following beneficial effects: In this application, by setting a detachable front cover and installing the stirring component on the front cover, the front cover and the stirring component can be removed together after stirring is completed, making it easy to remove the material in the kneading chamber. The material adhering to the stirring component is also easy to clean, making the overall operation simple and convenient. Furthermore, by setting a threaded hole and a screw, the front cover can be locked onto the kneading box by screwing the screw into the threaded hole, which also facilitates disassembly after use, making disassembly and assembly convenient. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2This is a schematic diagram of the kneading box and drive box in an embodiment of the present invention; Figure 3 This is a cross-sectional structural diagram of the kneading box and drive box in an embodiment of this utility model; Figure 4 yes Figure 3 Enlarged diagram of part A in the diagram; Figure 5 yes Figure 3 Enlarged schematic diagram of part B in the diagram; Figure 6 This is a schematic diagram of the front cover and stirring assembly of this utility model embodiment.

[0021] In the diagram: 10. Kneading box; 11. Kneading chamber; 12. Feed inlet; 13. Oil tank; 14. Oil inlet pipe; 15. Oil outlet pipe; 20. Front cover; 21. Through hole; 22. Screw; 23. Second step hole; 231. Large diameter hole; 232. Medium diameter hole; 233. Small diameter hole; 234. Front bearing; 235. Front sealing ring; 236. Front annular groove; 237. Front sealing ring; 24. Cap; 30. Stirring assembly; 31. Rotating shaft; 32. Stirring blades; 33. 40. Connecting block; 41. Rear end cover; 42. First stepped hole; 43. Threaded hole; 44. T-shaped sleeve; 45. Rear annular groove; 46. Rear sealing ring; 47. First inner annular groove; 48. Second inner annular groove; 49. Inner sealing ring; 50. Drive assembly; 51. Drive box; 52. Drive motor; 53. Connecting shaft; 54. Connecting sleeve; 55. Waist-shaped hole; 56. Pinion; 57. Large gear; 58. Drive shaft; 59. Coupling. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] like Figure 1-6 As shown in the figure, this application discloses a kneading device for a kneader, including a kneading box 10, a front cover 20, a stirring assembly 30, a rear cover 40, and a driving assembly 50.

[0024] Specifically, the kneading box 10 has a square block structure with a kneading cavity 11 horizontally extending through it. The kneading cavity 11 is a cavity formed by two intersecting circular holes. The kneading cavity 11 is used to place materials and the stirring component 30 so that the stirring component 30 can stir and knead the materials. The top of the kneading box 10 has a feed hole 12 that communicates with the kneading cavity 11 so as to feed materials into the kneading cavity 11.

[0025] A front cover 20 is detachably installed at the front end of the kneading chamber 11 in the kneading box 10, and a rear cover 40 is installed at the rear end of the kneading chamber 11 in the kneading box 10. Two sets of stirring components 30 are horizontally arranged on the front cover 20. The two sets of stirring components 30 are placed inside the kneading chamber 11, and the ends of the two sets of stirring components 30 away from the front cover 20 are rotatably sealed with the rear cover 40. The stirring component 30 includes a rotating shaft 31 rotatably mounted on the front cover 20, and curved stirring blades 32 are provided on the rotating shaft 31. The two sets of stirring components 30 are respectively located in two circular holes in the kneading chamber 11, and the rotating shaft 31 is concentrically arranged with the corresponding circular holes. Two first stepped holes 41 are horizontally spaced apart on the rear cover 40, and two second stepped holes 23 are correspondingly provided on the front cover 20. The two ends of the rotating shaft 31 are rotatably sealed with the first stepped holes 41 and the second stepped holes 23, respectively.

[0026] In specific configuration, the second-step hole 23 is divided into a large-diameter hole 231, a medium-diameter hole 232, and a small-diameter hole 233. A front bearing 234 is housed in the large-diameter hole 231, a front sealing ring 235 is housed in the medium-diameter hole 232, and a front annular groove 236 is formed on the wall of the small-diameter hole 233. A front sealing ring 237 is housed within the front annular groove 236. The end of the rotating shaft 31 near the front end cover 20 is fixed within the inner ring of the front bearing 234, and the shaft body forms a rotational seal with the front sealing ring 235 and the front sealing ring 237. The front bearing 234 ensures the rotational accuracy of the rotating shaft 31, and the front sealing ring 235 and the front sealing ring 237 form a double seal to ensure a good sealing effect. To prevent the front bearing 234 and the end of the rotating shaft 31 from being exposed on the front end cover 20, two caps 24 are also provided on the front end cover 20. The two caps 24 cover the two front bearings 234 respectively, providing sealing protection for the front bearings 234.

[0027] A T-shaped sleeve 43 is installed inside the first stepped hole 41. A rear annular groove 431 is formed on the outer wall of the T-shaped sleeve 43, and a rear sealing ring 432 is installed inside the rear annular groove 431. The T-shaped sleeve 43 and the first stepped hole 41 form a sealing fit through the rear sealing ring 432, allowing the T-shaped sleeve 43 to be disassembled and replaced independently without disassembling the entire rear end cover 40, thus reducing the difficulty and cost of sealing component maintenance. A first inner annular groove 433 and a second inner annular groove 434 are formed on the inner wall of the T-shaped sleeve 43. An inner sealing ring 435 is installed inside the first inner annular groove 433, and an inner sealing ring 436 is installed inside the second inner annular groove 434. The end of the rotating shaft 31 away from the front end cover 20 is placed inside the T-shaped sleeve 43 and forms a rotational seal with the inner sealing ring 435 and the inner sealing ring 436. The inner sealing ring 435 and the inner sealing ring 436 provide a double rotational seal for the rotating shaft 31, solving the problem of easy wear and failure of the single seal in traditional equipment, and significantly improving the long-term sealing stability of the equipment.

[0028] The drive assembly 50 is used to drive the stirring assembly 30 to rotate. It includes a drive box 51 and a drive motor 52 located behind the rear end cover 40. Two connecting shafts 53 are rotatably arranged inside the drive box 51. The two connecting shafts 53 are coaxially arranged with the two rotating shafts 31. The end of the connecting shaft 53 near the rear end cover 40 passes through the drive box 51 and is provided with a connecting sleeve 54. The connecting sleeve 54 has an oblong hole 55. The end of the rotating shaft 31 away from the front end cover 20 is provided with a connecting block 33 that mates with the oblong hole 55. The connection between the rotating shaft 31 and the connecting shaft 53 can be achieved simply by inserting the connecting block 33 at the end of the rotating shaft 31 into the oblong hole 55 of the connecting sleeve 54, which facilitates quick docking and separation. One connecting shaft 53 is equipped with a small gear 56, and the other connecting shaft 53 is equipped with a large gear 57. The small gear 56 meshes with the large gear 57 at a ratio of 1:2, enabling different speed ratios for the two sets of connecting shafts 53. This allows the two sets of mixing components 30 to rotate at different speeds, ensuring uniform mixing of materials and reducing dead zones. The output shaft of the drive motor 52 is equipped with a drive shaft 58, which passes through the control cabinet and is connected to the connecting shaft 53 with the small gear 56 via a coupling 59, ensuring power transmission.

[0029] Furthermore, several threaded holes 42 are provided on the rear end cover 40, and several through holes 21 are correspondingly provided on the front end cover 20. A screw 22 is rotatably installed in the through holes 21. The end of the screw 22 is provided with an external thread to form a helical engagement with the threaded hole 42. In use, the front end cover 20 is lifted and the two sets of stirring components 30 are placed into the two round holes of the kneading chamber 11, and the ends of the two rotating shafts 31 are inserted into the waist-shaped holes 55 of the connecting sleeve 54. Then, the ends of the screws 22 are aligned with the threaded holes 42 and screwed in, thereby tightening and fixing the front end cover 20 to the kneading box 10. To ensure the sealing of the front end cover 20 after installation, a sealing groove is provided on the end face of the kneading box 10 near the front end cover 20. A sealing strip is provided in the sealing groove to ensure the sealing of the end face between the front end cover 20 and the front end cover 20 after installation.

[0030] Furthermore, continuously arranged oil grooves 13 are provided at the bottom of the kneading box 10 and on the two side walls parallel to the length direction of the kneading cavity 11. One of the side walls is provided with an oil inlet pipe 14 and an oil outlet pipe 15 communicating with the oil grooves 13. The oil inlet pipe 14, the oil grooves 13, and the oil outlet pipe 15 form a circulating oil circuit surrounding the kneading cavity 11. During operation, heat transfer oil can be introduced to heat the kneading cavity 11, which can quickly achieve heat transfer and temperature regulation. This facilitates the control of the temperature inside the kneading cavity 11. Compared with the traditional local heating method, it can make the temperature distribution on the inner wall of the kneading cavity 11 more uniform, avoid the material from solidifying or deteriorating due to local temperature differences, ensure that the material is kneaded at the optimal process temperature, and significantly improve the mixing uniformity and product quality stability.

[0031] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A kneading device for a kneading machine, characterized in that: The system includes a kneading box (10), a kneading cavity (11) horizontally extending through the kneading box (10), a feed hole (12) communicating with the kneading cavity (11) at the top of the kneading box (10), a detachable front cover (20) at the front end of the kneading cavity (11), two sets of stirring components (30) horizontally arranged on the front cover (20), and a rear cover (40) at the rear end of the kneading cavity (11). The rear cover (40) has two first stepped holes (41) that cooperate with the stirring assembly (30). The rear cover (40) has several threaded holes (42). The front cover (20) has several through holes (21). A screw (22) is rotatably installed in the through hole (21). The end of the screw (22) is provided with an external thread that forms a helical fit with the threaded hole (42). The rear side of the rear cover (40) is also provided with a driving assembly (50) for driving the stirring assembly (30) to rotate.

2. The kneading device for a kneader according to claim 1, characterized in that: The kneading cavity (11) is a cavity consisting of two intersecting circular holes. The stirring assembly (30) includes a rotating shaft (31) rotatably mounted on the front end cover (20). The rotating shaft (31) is provided with curved stirring blades (32). The two sets of stirring assemblies (30) are located in the two circular holes respectively, and the rotating shaft (31) is arranged coaxially with the corresponding circular holes.

3. The kneading device for a kneader according to claim 2, characterized in that: The front cover (20) has two second step holes (23) horizontally spaced apart. The second step holes (23) are divided into a large diameter hole (231), a medium diameter hole (232), and a small diameter hole (233). A front bearing (234) is installed in the large diameter hole (231). A front sealing ring (235) is installed in the medium diameter hole (232). A front annular groove (236) is opened on the hole wall of the small diameter hole (233). A front sealing ring (237) is installed in the front annular groove (236). The end of the rotating shaft (31) near the front cover (20) is fixed in the inner ring of the front bearing (234), and the shaft body forms a rotation seal with the front sealing ring (235) and the front sealing ring (237) respectively.

4. The kneading device for a kneader according to claim 2, characterized in that: A T-shaped sleeve (43) is provided in the first stepped hole (41). A rear annular groove (431) is provided on the outer wall of the T-shaped sleeve (43). A rear sealing ring (432) is provided in the rear annular groove (431). The T-shaped sleeve (43) and the first stepped hole (41) are sealed together by the rear sealing ring (432). A first inner annular groove (433) and a second inner annular groove (434) are provided on the inner wall of the T-shaped sleeve (43). An inner sealing ring (435) is provided in the first inner annular groove (433). An inner sealing ring (436) is provided in the second inner annular groove (434). The end of the rotating shaft (31) away from the front end cover (20) is placed in the T-shaped sleeve (43) and forms a rotation seal with the inner sealing ring (435) and the inner sealing ring (436).

5. A kneading device for a kneader according to claim 2, characterized in that: The drive assembly (50) includes a drive housing (51) and a drive motor (52) disposed behind the rear end cover (40). Two connecting shafts (53) are rotatably disposed within the drive housing (51). The two connecting shafts (53) are coaxially arranged with two rotating shafts (31). One end of each connecting shaft (53) near the rear end cover (40) passes through the drive housing (51) and is fitted with a connecting sleeve (54). The connecting sleeve (54) has an oblong hole (55). The rotating shafts (31... A connecting block (33) that mates with a waist-shaped hole (55) is provided at one end away from the front end cover (20). A small gear (56) is provided on one connecting shaft (53) and a large gear (57) is provided on the other connecting shaft (53). The small gear (56) meshes with the large gear (57). A drive shaft (58) is provided on the output shaft of the drive motor (52). The drive shaft (58) is connected to the connecting shaft (53) with the small gear (56) by a coupling (59).

6. A kneading device for a kneader according to claim 3, characterized in that: The front cover (20) is also provided with two caps (24) covering the front bearing (234).

7. A kneading device for a kneader according to claim 1, characterized in that: The bottom of the kneading box (10) and the two side walls parallel to the length direction of the kneading cavity (11) are provided with continuously arranged oil grooves (13), and one of the side walls is provided with an oil inlet pipe (14) and an oil outlet pipe (15) communicating with the oil groove (13).

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