A polyisobutylene kneader

Abstract

The utility model discloses a kind of polyisobutylene kneader, it is related to kneader technical field, including: casing, stirring box and control system are arranged in casing, heating device is arranged on stirring box, two stirring paddles are arranged in stirring box, stirring paddle is connected with driving device;Stirring box includes box and cover, box is connected with turnover mechanism, cover is connected with first lifting mechanism, the bottom of cover is provided with liftable pressure head, pressure head is connected with second lifting mechanism;Two first cambers corresponding with two stirring paddles respectively are arranged on the inner bottom wall of box, two second cambers corresponding with two stirring paddles respectively are arranged on the lower bottom wall of pressure head;The gap between stirring paddle and the inner bottom wall of box is not more than 3mm, when pressure head is pressed to lower limit position, the gap between the lower bottom wall of pressure head and stirring paddle is not more than 3mm.It can be more finely broken, uniformity is better, and kneading efficiency is higher to polyisobutylene stirring kneading.

Description

Technical Field

[0001] This utility model relates to the field of kneading machine technology, specifically to a polyisobutylene kneading machine. Background Technology

[0002] Kneaders can be used to produce silicone rubber, sealants, hot melt adhesives, food-grade gums, and pharmaceutical preparations. A kneader is a special mixing and stirring device, most commonly employing two Σ-blades arranged in a parallel, tangential, differential speed configuration. One blade travels at a high speed, while the other travels at a low speed, creating shearing force. The different blade speeds allow the materials to be rapidly sheared, resulting in a uniform mixture.

[0003] In pharmaceutical preparations, polyisobutylene needs to be stirred or kneaded with liquid paraffin to transform lumpy polyisobutylene raw materials into a fluid or flocculent form for later use. However, using existing kneaders presents two main problems: first, the polyisobutylene is not finely mixed enough, resulting in poor uniformity and the formation of residual lumps; second, the stirring and kneading efficiency is low. Utility Model Content

[0004] The purpose of this invention is to provide a polyisobutylene kneader that can knead polyisobutylene into finer pieces with better uniformity and higher kneading efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A polyisobutylene kneader includes: a housing, a mixing chamber and a control system disposed within the housing, a heating device disposed on the mixing chamber, two mixing paddles disposed within the mixing chamber, and a driving device connected to the mixing paddles; the mixing chamber includes a box body and a cover body, the box body is connected to a tilting mechanism, the cover body is connected to a first lifting mechanism, a liftable pressure head is disposed at the bottom of the cover body, and the pressure head is connected to a second lifting mechanism; the inner bottom wall of the box body is provided with two first arc surfaces corresponding to the two mixing paddles respectively, and the lower bottom wall of the pressure head is provided with two second arc surfaces corresponding to the two mixing paddles respectively; the gap between the mixing paddles and the inner bottom wall of the box body is no greater than 3mm, and when the pressure head is pressed down to the lower limit position, the gap between the lower bottom wall of the pressure head and the mixing paddles is no greater than 3mm.

[0007] Optionally, the gap between the stirring paddle and the inner bottom wall of the housing is 2mm, and when the pressure head is pressed down to the lower limit position, the gap between the lower bottom wall of the pressure head and the stirring paddle is 2mm.

[0008] Optionally, the first lifting mechanism includes a first cylinder and a plurality of vertically arranged first guide posts, the cover is provided with a first guide hole that cooperates with the first guide posts, and the first cylinder is connected to the cover.

[0009] Optionally, the second lifting mechanism includes a fixed frame disposed on the cover, a second cylinder disposed on the fixed frame, and a second guide post connected to the second cylinder; the cover is provided with a second guide hole for the second guide post to pass through, and the second guide post is fixedly connected to the pressure head.

[0010] Optionally, the flipping mechanism includes a third cylinder and two hinge joints disposed below the housing. One end of the third cylinder is hinged to the housing and the other end is hinged to the housing. The housing is also hinged to the hinge joints.

[0011] Optionally, the driving device includes a first motor, a transmission rod connected to the first motor, the transmission rod being connected to a first stirring paddle, a first gear being provided on the transmission rod, and a second gear being provided on the second stirring paddle, the first gear and the second gear meshing with each other.

[0012] In this invention, a pressure head is added, which compresses the polyisobutylene between two stirring paddles for mixing. Compared to existing kneaders, this results in higher mixing efficiency. In existing kneaders, the polyisobutylene tends to form flocs during mixing, with some remaining above the stirring paddles and failing to be effectively mixed, leading to low efficiency. Furthermore, because the inner bottom wall of the housing and the lower bottom wall of the pressure head are respectively provided with two first arc surfaces and two second arc surfaces, and the gap between these surfaces and the stirring paddles is no more than 3mm, the rotation space of the stirring paddles is approximately cylindrical. This allows for finer and more uniform mixing of the polyisobutylene. Attached Figure Description

[0013] Figure 1 A schematic diagram of a perspective view of a polyisobutylene kneader;

[0014] Figure 2 A schematic diagram of the internal structure of a polyisobutylene kneader;

[0015] Figure 3 for Figure 2 A diagram from another direction;

[0016] Figure 4 A schematic diagram of the drive unit and the internal structure of the housing;

[0017] Figure 5 for Figure 4 A schematic diagram of removing the agitator blades;

[0018] Figure 6This is a schematic diagram of the cover and the pressure head;

[0019] Figure 7 for Figure 6 A diagram from another direction.

[0020] In the diagram, 1. Casing; 11. Partition; 12. Through hole; 2. Mixing tank; 21. Tank body; 211. First arc surface; 22. Cover; 221. First guide hole; 222. Second guide hole; 223. Third guide hole; 23. Stirring paddle; 3. Heating device; 4. Drive device; 41. First motor; 42. Transmission rod; 43. First gear; 44. Second gear; 45. Fixed box; 46. Baffle plate; 5. Tilting mechanism; 51. Third cylinder; 52. Hinge joint; 6. First lifting mechanism; 61. First cylinder; 62. First guide post; 7. Pressure head; 71. Second arc surface; 8. Second lifting mechanism; 81. Second cylinder; 82. Fixed frame; 83. Second guide post; 84. Third guide post. Detailed Implementation

[0021] Hereinafter, embodiments will be described with reference to the accompanying drawings.

[0022] See Figure 1-7 This utility model provides a polyisobutylene kneader. See also Figure 1 The system includes a housing 1, within which a mixing tank 2 and a control system are housed. The control system can be a PLC or a microcontroller, etc. A heating device 3 is installed on the mixing tank 2. The heating device 3 may include an electric heater and a heat-conducting oil passage located in the side wall interlayer of the mixing tank 2. The electric heater heats the heat-conducting oil to heat the mixing tank 2. Two stirring paddles 23 are installed inside the mixing tank 2, and the stirring paddles 23 are connected to a drive device 4. The drive device 4 drives the stirring paddles 23 to rotate. See also... Figure 2 and 3 The mixing tank 2 includes a tank body 21 and a cover 22. The tank body 21 is connected to a tilting mechanism 5. The cover 22 is connected to a first lifting mechanism 6. See also Figure 6 and 7 The bottom of the cover 22 is provided with a liftable pressure head 7, which is connected to a second lifting mechanism 8; see also Figure 5 The inner bottom wall of the housing 21 has two first arc surfaces 211, each corresponding to one of the two agitator blades 23. (See also...) Figure 7 The bottom wall of the pressure head 7 is provided with two second arc surfaces 71, which correspond to the two stirring paddles 23 respectively. The gap between the stirring paddle 23 and the inner bottom wall of the box 21 is no more than 3mm. When the pressure head 7 is pressed down to the lower limit position, the gap between the bottom wall of the pressure head 7 and the stirring paddle 23 is no more than 3mm.

[0023] During the kneading process, the first lifting mechanism raises the cover, and the second lifting mechanism raises the pressure head, placing the lumpy polyisobutylene into the chamber. Then, the first lifting mechanism lowers the cover to close the chamber, and the drive device drives the stirring paddles to agitate. Simultaneously, the second lifting mechanism gradually lowers the pressure head to force the polyisobutylene between the two stirring paddles for kneading. Because this kneader includes a pressure head, which forces the polyisobutylene between the two stirring paddles, its mixing efficiency is higher than existing kneaders. In existing kneaders, the polyisobutylene tends to become flocculent during mixing, with some remaining above the stirring paddles and not effectively mixed, resulting in low efficiency. Furthermore, because the inner bottom wall of the chamber and the lower bottom wall of the pressure head are respectively provided with two first arc surfaces and two second arc surfaces, with a gap of no more than 3mm between them and the stirring paddles, and the rotation space of the stirring paddles is roughly cylindrical, the polyisobutylene can be mixed more finely and evenly during kneading.

[0024] Optionally, the gap between the stirring paddle 23 and the inner bottom wall of the housing 21 is 2mm, and when the pressure head 7 is pressed down to the lower limit position, the gap between the lower bottom wall of the pressure head 7 and the stirring paddle 23 is 2mm.

[0025] Optionally, referring to 3 and 4, the first lifting mechanism 6 includes a first cylinder 61 and several vertically arranged first guide posts 62. The cover 22 is provided with a first guide hole 221 that cooperates with the first guide posts 62. The first cylinder 61 is connected to the cover 22. Specifically, the first cylinder 61 is located at the bottom of the housing 1, and the first guide posts 62 are located behind the mixing tank 2. When the first cylinder 61 extends or retracts, it drives the cover 22 to move up and down along the first guide posts 62.

[0026] Optionally, referring to 6 and 7, the second lifting mechanism 8 includes a fixed frame 82 mounted on the cover 22, a second cylinder 81 mounted on the fixed frame 82, and a second guide post 83 connected to the second cylinder 81. The cover 22 has a second guide hole 222 through which the second guide post 83 passes, and the second guide post 83 is fixedly connected to the pressure head 7. The pressure head 7 may also have a third guide post 84, and the cover 22 may also have a third guide hole 223. Specifically, there may be two second cylinders 81, with the extension rods of the two cylinders connected to a connecting plate. The connecting plate has several second guide posts 83, which are fixedly connected to the pressure head 7. When the second cylinders 81 extend or retract, they drive the pressure head 7 to move up and down, and the cooperation between the third guide post 84 and the third guide hole 223 provides a guiding function.

[0027] Optionally, see Figure 2 and Figure 3The flipping mechanism 5 includes a third cylinder 51 and two hinge joints 52. One end of the third cylinder 51 is hinged to the housing 1 and the other end is hinged to the rear bottom of the box 21. The front bottom of the box 21 is hinged to the hinge joints 52. When the third cylinder 51 extends or retracts, it drives the box 21 to rotate around the axis formed by the line connecting the two hinge joints 52.

[0028] Optionally, the drive device 4 includes a first motor 41, a transmission rod 42 connected to the first motor 41, the transmission rod 42 being connected to a first stirring paddle 23, a first gear 43 being provided on the transmission rod 42, and a second gear 44 being provided on the second stirring paddle 23, the first gear 43 and the second gear 44 meshing with each other. Specifically, a fixed box 45 is fixedly connected to the side wall of the housing 21, and the first motor 41 is fixedly mounted on the fixed box 45. The transmission rod 42, the first gear 43 and the second gear 44 are located inside the fixed box 45. The housing 1 can be divided into two housings by a partition 11, with the first motor 41 located in the other housing. A through hole 12 is provided on the partition 11. When the housing 21 is flipped, the first motor 41 flips synchronously with the housing 21. A baffle plate 46 can be fixedly provided on the first motor 41 to block the through hole 12 when the housing 21 is in an upright state.

Claims

1. A polyisobutylene kneader, comprising: A housing, wherein a mixing tank and a control system are disposed within the housing, a heating device is disposed on the mixing tank, and two mixing paddles are disposed within the mixing tank, the mixing paddles being connected to a driving device; characterized in that the mixing tank comprises a body and a cover, the body being connected to a tilting mechanism, the cover being connected to a first lifting mechanism, and a liftable pressure head being disposed at the bottom of the cover, the pressure head being connected to a second lifting mechanism; the inner bottom wall of the body is provided with two first arc surfaces corresponding to the two mixing paddles respectively, and the lower bottom wall of the pressure head is provided with two second arc surfaces corresponding to the two mixing paddles respectively; the gap between the mixing paddles and the inner bottom wall of the body is not greater than 3mm, and when the pressure head is pressed down to the lower limit position, the gap between the lower bottom wall of the pressure head and the mixing paddles is not greater than 3mm.

2. The polyisobutylene kneader as described in claim 1, characterized in that, The gap between the stirring paddle and the inner bottom wall of the box is 2mm. When the pressure head is pressed down to the lower limit position, the gap between the lower bottom wall of the pressure head and the stirring paddle is 2mm.

3. The polyisobutylene kneader as described in claim 1, characterized in that, The first lifting mechanism includes a first cylinder and several vertically arranged first guide posts. The cover is provided with a first guide hole that cooperates with the first guide posts. The first cylinder is connected to the cover.

4. The polyisobutylene kneader as described in claim 1, characterized in that, The second lifting mechanism includes a fixed frame mounted on the cover, a second cylinder mounted on the fixed frame, and a second guide post connected to the second cylinder; the cover is provided with a second guide hole through which the second guide post passes, and the second guide post is fixedly connected to the pressure head.

5. The polyisobutylene kneader as described in claim 1, characterized in that, The flipping mechanism includes a third cylinder and two hinge joints located below the housing. One end of the third cylinder is hinged to the housing, and the other end is hinged to the housing. The housing is also hinged to the hinge joints.

6. The polyisobutylene kneader as described in claim 1, characterized in that, The driving device includes a first motor, a transmission rod connected to the first motor, the transmission rod being connected to a first stirring paddle, a first gear being provided on the transmission rod, and a second gear being provided on the second stirring paddle, the first gear and the second gear meshing with each other.

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