Extrusion device for trace blending in laboratory

Abstract

The utility model discloses a trace blending extrusion device for a laboratory, and relates to the technical field of extrusion devices. The device comprises a hopper, the output end of the hopper is fixedly connected with a material conveying pipe, the output end of the material conveying pipe is fixedly connected with a discharging pipe, the interior of the material conveying pipe is rotatably connected with a material extruding auger, the interior of the hopper is evenly and rotatably connected with four stirring rods, the four stirring rods are arranged in a circle, and one end of the hopper is rotatably connected with a double-face gear ring; and one end of the stirring rod penetrates through the hopper and is fixedly connected with a rotating gear meshed with the double-sided gear ring. When the driving mechanism is started to drive the extrusion packing auger and the double-sided gear ring to rotate, the double-sided gear ring is engaged with the rotating gear, the stirring rod is driven to fully stir and mix materials in the hopper, meanwhile, one end of the extrusion packing auger rotates, and the materials guided into the conveying pipe from the hopper are pushed to penetrate through the discharging pipe to be extruded out; therefore, the materials stored in the hopper can be uniformly mixed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of extrusion devices, in particular to a laboratory micro-blending extrusion device. BACKGROUND

[0002] The research and development of polymer materials play an important role in various industrial fields. With the rapid development of polymer blends and nanocomposites, the demand for laboratory mixing equipment for new material research is increasing. This is because in the initial stage of material development, the yield of raw materials obtained in the laboratory is very low or the materials themselves are very expensive, and the acquisition of many new materials can only be measured in "g". Therefore, the cavity of the blending instrument needs to process micro materials and establish a necessary flow model to obtain good blending effect.

[0003] The existing laboratory micro-blending extrusion device technology mainly reflects the characteristics of high-precision measurement and control, multi-functionality, efficient operation and maintenance, and advanced measurement technology. These devices can handle very small amounts of samples (usually in milligrams), which is critical for testing expensive or rare materials. The device is equipped with a precise control system that can monitor and adjust key parameters such as temperature, pressure, and speed in real time during the extrusion process. In addition, the micro-rheological extruder not only can perform conventional rheological performance tests, but also can perform reaction extrusion experiments, thermal degradation studies, quality control, and other experiments. High degree of automation, with automatic bypass valve switching extrusion or circulation operation mode, and pneumatic feeding device and other automatic functions, improve the operation efficiency and the repeatability of the experiment.

[0004] Although the existing micro-extruder technology is quite advanced, there are still some problems. When traditional screw propeller is used for extrusion, the material stored in the hopper is prone to sedimentation, resulting in stratification and affecting uniform mixing. CONTENT OF THE INVENTION

[0005] The purpose of the present application is to solve the problem of traditional screw propeller extrusion, which is prone to sedimentation of material stored in the hopper, resulting in stratification and affecting uniform mixing. The present application provides a laboratory micro-blending extrusion device.

[0006] The present application adopts the following technical solutions to achieve the above purposes:

[0007] The utility model provides an experimental laboratory micro -blending extrusion device, including hopper, the output end of hopper is fixedly connected with the material conveying pipe, the output end of material conveying pipe is fixedly connected with the discharge pipe, the inside rotation of material conveying pipe is connected with extruding auger, the inside rotation of hopper is uniformly connected with four stirring rods, four stirring rods are arranged in a circle, one end of hopper is rotatably connected with double-sided tooth ring, one end of stirring rod passes through hopper and is fixedly connected with the rotating gear that is engaged with double-sided tooth ring, one end of material conveying pipe is installed drive mechanism for driving extruding auger and double-sided tooth ring to rotate.

[0008] Through the cooperation of the driving mechanism, the stirring rod, the double-sided tooth ring and the rotating gear, when the driving mechanism drives the extruding auger and the double-sided tooth ring to rotate, the double-sided tooth ring is engaged with the rotating gear, the stirring rod drives the material in the hopper to be fully stirred and mixed, the extruding auger rotates to push the material in the hopper into the material conveying pipe and then out of the discharge pipe, so that the material in the hopper is uniformly mixed, and the practicability of the device is improved.

[0009] Further, the driving mechanism includes a bevel gear one rotatably connected to one end of the hopper, the bevel gear one is fixedly connected with a transmission gear engaged with the double-sided tooth ring, one end of the extruding auger passes through the material conveying pipe and is rotatably sleeved with a bevel gear two engaged with the bevel gear one, and one end of the material conveying pipe is provided with a driving assembly for driving the bevel gear two to rotate and a speed regulation assembly for driving the extruding auger to rotate.

[0010] Through the cooperation of the driving assembly and the speed regulation assembly, the bevel gear two is driven to rotate by starting the driving assembly, the bevel gear two is engaged with the bevel gear one, the transmission gear is driven to rotate, the transmission gear is engaged with the double-sided tooth ring, and the double-sided tooth ring is driven to rotate, so that the practicability of the device is improved.

[0011] Further, the driving assembly includes a motor fixedly connected to one end of the material conveying pipe, the output end of the motor is fixedly connected with a synchronous pulley one, one end of the bevel gear two is fixedly connected with a synchronous pulley two, and the outer periphery of the synchronous pulley one and the synchronous pulley two is sleeved with a synchronous belt.

[0012] Through the cooperation of the synchronous pulley one, the synchronous pulley two and the synchronous belt, the bevel gear two is driven to rotate synchronously by starting the motor, and the practicability of the device is further improved.

[0013] Further, one end of the extruding auger is fixedly connected with a pair of positioning rings, and the bevel gear two is installed between the two positioning rings.

[0014] By adopting the technical scheme, the positioning ring and the bevel gear two are used in cooperation, the movement of the bevel gear two along the length direction of the material conveying pipe is limited, and the practicability of the device is effectively improved.

[0015] Further, the speed regulating assembly comprises a speed reduction gear one fixedly connected to the motor output end, one end of the material conveying pipe is rotatably connected with a speed reduction gear two engaged with the speed reduction gear one, one end of the speed reduction gear two is fixedly connected with a speed reduction gear three, and one end of the extruding auger is fixedly connected with a speed reduction gear four engaged with the speed reduction gear three.

[0016] By adopting the technical scheme, the speed reduction gear one, the speed reduction gear three, the speed reduction gear two and the speed reduction gear four are used in cooperation, the speed of the motor driving the extruding auger to rotate is reduced by the diameter difference between the speed reduction gear one and the speed reduction gear three and the speed reduction gear two and the speed reduction gear four, and the precision of the extruding auger pushing the material in the material conveying pipe to pass through the discharging pipe is improved.

[0017] Further, the inside of the material conveying pipe is provided with a heating bin, one end of the heating bin is fixedly connected with a heat exchange cylinder, one end of the extruding auger passes through the inside of the heat exchange cylinder, and the heating bin and the heat exchange cylinder are fixedly connected with an electric heating wire.

[0018] By adopting the technical scheme, when the extruding auger is driven to push the material to pass through the inside of the material conveying pipe, the electric heating wire is started to contact and exchange heat with the material through the heat exchange cylinder, so that the material is heated.

[0019] Further, the periphery of the material conveying pipe is fixedly provided with a heat preservation rock wool sleeve.

[0020] By adopting the technical scheme, the heat preservation effect of one end of the material conveying pipe is effectively improved by the heat preservation rock wool sleeve.

[0021] Further, the inside walls of the hopper and the material conveying pipe are coated with organic silicon gloss paint.

[0022] By adopting the technical scheme, the surface tension of the inside walls of the hopper and the material conveying pipe is effectively reduced by the organic silicon gloss paint, and the anti-sticking and anti-fouling effects of the inside walls of the hopper and the material conveying pipe are improved.

[0023] In summary, the present application has at least one of the following beneficial effects:

[0024] 1. By setting the driving mechanism with the cooperation of the stirring rod, the double-sided tooth ring and the rotating gear, when the driving mechanism drives the extruding auger and the double-sided tooth ring to rotate, the double-sided tooth ring meshes with the rotating gear and drives the stirring rod to fully stir and mix the materials in the hopper, at the same time, one end of the extruding auger rotates and pushes the materials in the hopper into the material conveying pipe and extrudes them through the discharge pipe, so as to realize uniform mixing of the stored materials in the hopper and improve the practicability of the device.

[0025] 2. By setting the cooperation of the reduction gear one, the reduction gear two, the reduction gear three and the reduction gear four, the diameter difference between the reduction gear one, the reduction gear three and the reduction gear two, and the reduction gear four is utilized to reduce the speed of the motor driving the extruding auger to rotate, and the precision of the extruding auger pushing the materials in the material conveying pipe to extrude through the discharge pipe is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the device body in this application.

[0027] Figure 2 is a front view of the device body in this application.

[0028] Figure 3 is an explosion diagram of the connection relationship between the bevel gear two and the extruding auger in this application.

[0029] BRIEF DESCRIPTION OF DRAWINGS:

[0030] 1, hopper; 2, material conveying pipe; 3, discharge pipe; 4, extruding auger; 5, stirring rod; 6, double-sided tooth ring; 7, rotating gear; 8, bevel gear one; 9, transmission gear; 10, bevel gear two; 11, motor; 12, synchronous pulley one; 13, synchronous pulley two; 14, synchronous belt; 15, positioning ring; 16, reduction gear one; 17, reduction gear two; 18, reduction gear three; 19, reduction gear four; 20, heating bin; 21, heat exchange cylinder; 22, electric heating wire; 23, thermal insulation rock wool sleeve. DETAILED DESCRIPTION

[0031] The following will be further explained in detail in conjunction with the accompanying Figure 1 3.

[0032] The application discloses an extrusion device for micro blending in a laboratory.

[0033] Refer to Figure 1 - Figure 3, the laboratory is a trace amount of blending with extrusion device, including hopper 1, the output end of hopper 1 is fixedly connected with the feed pipe 2, the output end of feed pipe 2 is fixedly connected with the discharge pipe 3, the inside of feed pipe 2 is rotatably connected with the extrusion auger 4, the inside of hopper 1 is uniformly rotatably connected with four stirring rods 5, four stirring rods 5 are arranged in a circle, one end of hopper 1 is rotatably connected with double-sided tooth ring 6, one end of stirring rod 5 passes through hopper 1, and is fixedly connected with rotating gear 7 engaged with double-sided tooth ring 6, one end of feed pipe 2 is provided with driving mechanism for driving extrusion auger 4 and double-sided tooth ring 6 to rotate;

[0034] Wherein, the driving mechanism includes bevel gear one 8 rotatably connected at one end of hopper 1, the one end of bevel gear one 8 is fixedly connected with transmission gear 9 engaged with double-sided tooth ring 6, one end of extrusion auger 4 passes through feed pipe 2, and rotatably sleeved with bevel gear two 10 engaged with bevel gear one 8, one end of feed pipe 2 is provided with driving assembly for driving bevel gear two 10 to rotate, and speed regulating assembly for driving extrusion auger 4 to rotate;

[0035] And, the driving assembly includes motor 11 fixedly connected at one end of feed pipe 2, the output end of motor 11 is fixedly connected with synchronous pulley one 12, one end of bevel gear two 10 is fixedly connected with synchronous pulley two 13, synchronous belt 14 is sleeved on the periphery of synchronous pulley one 12 and synchronous pulley two 13;

[0036] And, one end of extrusion auger 4 is fixedly connected with a pair of positioning ring 15, bevel gear two 10 is installed between the two positioning ring 15;

[0037] And, the speed regulating assembly includes reduction gear one 16 fixedly connected at the output end of motor 11, reduction gear two 17 rotatably connected with reduction gear one 16 at one end of feed pipe 2, reduction gear three 18 fixedly connected at one end of reduction gear two 17, reduction gear four 19 fixedly connected at one end of extrusion auger 4 engaged with reduction gear three 18.

[0038] In use, first, the motor 11 is started to drive the synchronous pulley one 12 to rotate, so that the synchronous pulley one 12 is matched with the synchronous belt 14 to drive the synchronous pulley two 13 to rotate synchronously, so that the synchronous pulley two 13 drives the bevel gear two 10 to rotate, and the bevel gear two 10 drives the transmission gear 9 to engage with the double-sided tooth ring 6, at the same time, the transmission gear 9 drives the double-sided tooth ring 6 to rotate, and the double-sided tooth ring 6 engages with the rotating gear 7, so that the rotating gear 7 drives the stirring rod 5 to rotate, and the stirring rod 5 stirs the raw materials in the hopper 1 to form a mixture, so that the materials stored in the hopper 1 are mixed uniformly, and the practicability of the device is improved;

[0039] And in the motor 11 drive bevel gear two 10 synchronous rotation at the same time, so that the motor 11 drive reduction gear one 16 rotation, at the same time make the reduction gear one 16 and reduction gear two 17 meshing, and drive reduction gear two 17 to rotate down, at the same time make the reduction gear two 17 drive reduction gear three 18 synchronous rotation, and drive reduction gear three 18 and reduction gear four 19 meshing, at the same time make the reduction gear three 18 drive reduction gear four 19 to rotate down twice, and make the reduction gear four 19 drive extrusion auger 4 to rotate down, to reduce the extrusion auger 4 to the inside of the material pipe 2 material extrusion speed, improve the use precision of the device.

[0040] Referring to Figure 1 And Figure 2 The inside of the material pipe 2 is provided with a heating chamber 20, one end of the heating chamber 20 is fixedly connected with a heat exchange cylinder 21, one end of the extrusion auger 4 passes through the inside of the heat exchange cylinder 21, and the heating chamber 20 and the heat exchange cylinder 21 are fixedly connected with an electric heating wire 22.

[0041] Among them, the periphery of the material pipe 2 is fixedly provided with a thermal insulation rock wool sleeve 23.

[0042] In use, when the extrusion auger 4 is driven to push the material in the hopper 1 to pass through the inside of the material pipe 2, the electric heating wire 22 is started to heat itself, and the heat exchange cylinder 21 transmits heat to the material passing through the inside of the material pipe 2 to perform contact heat exchange, thereby improving the temperature of the material and improving the practicality of the device. At the same time, the thermal insulation rock wool sleeve 23 is arranged to reduce the direct contact of one end of the material pipe 2 with the outside, thereby improving the heat preservation effect of the inside of the heating chamber 20.

[0043] Referring to Figure 1 And Figure 2 The inner wall of the hopper 1 and the material pipe 2 is coated with silicone gloss paint.

[0044] In use, the inner wall of the hopper 1 and the material pipe 2 is coated with silicone gloss paint, which effectively reduces the surface tension of the inner wall of the hopper 1 and the material pipe 2, improves the anti-sticking and anti-fouling effect of the inner wall of the hopper 1 and the material pipe 2.

[0045] The implementation principle of the laboratory micro blending extrusion device is as follows: first, the motor 11 is started to drive the synchronous pulley one 12 to rotate, so that the synchronous pulley one 12 drives the synchronous pulley two 13 to rotate synchronously through the synchronous belt 14, and then the synchronous pulley two 13 drives the bevel gear two 10 to rotate, and the bevel gear two 10 drives the transmission gear 9 to mesh with the double-sided tooth ring 6, at the same time, the transmission gear 9 drives the double-sided tooth ring 6 to rotate, and the double-sided tooth ring 6 meshes with the rotating gear 7, so that the rotating gear 7 drives the stirring rod 5 to rotate, and the stirring rod 5 forms stirring and mixing of the raw material in the hopper 1.

[0046] And at the same time, the motor 11 drives the bevel gear 10 to rotate synchronously, and the motor 11 drives the reduction gear 16 to rotate, and the reduction gear 16 is engaged with the reduction gear 17, and the reduction gear 17 is driven to rotate at a low speed, and the reduction gear 17 drives the reduction gear 18 to rotate synchronously, and the reduction gear 18 is engaged with the reduction gear 19, and the reduction gear 18 drives the reduction gear 19 to rotate at a low speed, and the reduction gear 19 drives the extrusion auger 4 to rotate at a low speed;

[0047] Then when driving the extrusion auger 4 to push the material in the hopper 1 through the inside of the feeding pipe 2, the electric heating wire 22 is started to heat itself, and the heat is transferred to the material passing through the inside of the feeding pipe 2 through the heat exchange cylinder 21 to perform contact heat exchange, thereby improving the temperature of the material.

Claims

1. A laboratory micro-blending extrusion apparatus, comprising a hopper (1), characterized in that: The output end of the hopper (1) is fixedly connected to the conveying pipe (2), the output end of the conveying pipe (2) is fixedly connected to the discharge pipe (3), the inside of the conveying pipe (2) is rotatably connected to the extrusion auger (4), the inside of the hopper (1) is uniformly rotatably connected to four stirring rods (5), the four stirring rods (5) are arranged in a circle, one end of the hopper (1) is rotatably connected to a double-sided toothed ring (6), one end of the stirring rod (5) passes through the hopper (1) and is fixedly connected to a rotating gear (7) that meshes with the double-sided toothed ring (6), and one end of the conveying pipe (2) is equipped with a drive mechanism for driving the extrusion auger (4) and the double-sided toothed ring (6) to rotate.

2. The laboratory micro-blending extrusion apparatus according to claim 1, characterized in that: The drive mechanism includes a bevel gear 1 (8) rotatably connected to one end of the hopper (1), a transmission gear (9) that meshes with a double-sided toothed ring (6) is fixedly connected to one end of the bevel gear 1 (8), one end of the extrusion auger (4) passes through the conveying pipe (2) and is rotatably fitted with a bevel gear 2 (10) that meshes with the bevel gear 1 (8), and one end of the conveying pipe (2) is equipped with a drive assembly for driving the bevel gear 2 (10) to rotate and a speed regulating assembly for driving the extrusion auger (4) to rotate.

3. The laboratory micro-blending extrusion apparatus according to claim 2, characterized in that: The drive assembly includes a motor (11) fixedly connected to one end of the feed pipe (2), a synchronous pulley (12) fixedly connected to the output end of the motor (11), a synchronous pulley (13) fixedly connected to one end of the bevel gear (10), and a synchronous belt (14) sleeved around the synchronous pulley (12) and the synchronous pulley (13).

4. The laboratory micro-blending extrusion apparatus according to claim 2, characterized in that: One end of the extrusion auger (4) is fixedly connected to a pair of positioning rings (15), and the second bevel gear (10) is installed between the two positioning rings (15).

5. The laboratory micro-blending extrusion apparatus according to claim 2, characterized in that: The speed control assembly includes a first reduction gear (16) fixedly connected to the output end of the motor (11), a second reduction gear (17) rotatably connected to one end of the material conveying pipe (2) and meshing with the first reduction gear (16), a third reduction gear (18) fixedly connected to one end of the second reduction gear (17), and a fourth reduction gear (19) fixedly connected to one end of the extrusion auger (4) and meshing with the third reduction gear (18).

6. The laboratory micro-blending extrusion apparatus according to claim 1, characterized in that: A heating chamber (20) is provided on the inner side of the conveying pipe (2). A heat exchange cylinder (21) is fixedly connected to one end of the heating chamber (20). One end of the extrusion auger (4) passes through the interior of the heat exchange cylinder (21). An electric heating wire (22) is fixedly connected between the heating chamber (20) and the heat exchange cylinder (21).

7. The laboratory micro-blending extrusion apparatus according to claim 1, characterized in that: The material conveying pipe (2) is fixedly fitted with an insulating rock wool sleeve (23).

8. The laboratory micro-blending extrusion apparatus according to claim 1, characterized in that: The inner walls of both the hopper (1) and the conveying pipe (2) are coated with a silicone glossy coating.

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