JP2003144889A - Mixer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-performance mixer. SOLUTION: This mixer for a granular material is provided with a cone- shaped mixing vessel 1 having a vertical axis. The vessel is convergent toward a lower part and at least one vertical mixing shaft 3 is freely rotatably provided. A large number of radial elements are projected in a radial direction from the mixing shaft 3, and its distant end supports a paddle 5 in the vicinity of the side wall of the vessel 1. The radial element is slender while the mixing paddle 5 is comparatively short and symmetrical around the axis of the element 4. The rotation of the paddle and the shape of the cone-shaped vessel move contents in a helical shape toward an upper part. The layer of the material nearest to the wall makes smaller helical motion and large ascending motion. As a result, a middle layer receives strong shearing force and promotes mixing. A chopper to shear the material on the upper part of the vessel at the upper part of the mixing paddle 5 is provided at the top of the vessel.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a powder material and / or
Alternatively, the present invention relates to a mixer which is an apparatus for mixing, cooling, heating, drying and / or crushing granular materials. The device comprises a conical mixing vessel, which has a vertical axis, narrows downwards, at least one vertical mixing axis being rotatable, from which a number of elements project, Its outer end extends to near the side wall of the container.

[0002]

2. Description of the Prior Art According to US Pat. No. 5,344,232,
Very small medical mixers are known that produce a small amount of bone grafting agent for orthopedics in or near the operating room under partial vacuum. This bone grafting agent is used when performing a bone surgery, and fixes an artificial prosthesis to a bone, for example, a hip joint. Since the time of use of this bone grafting agent is very limited, it is prepared shortly before use.

This mixer comprises a manual vertical mixing shaft, which penetrates a flat top lid and comprises two mixing pawls of different heights and facing each other. When the rotation speed is low, for example, 30 to 40 rotations / minute, the liquid monomer is mixed with the solid polymer powder in a partial vacuum state to form a paste,
This paste is pushed into the cartridge, which is connected to the lower lid of the mixer for use.

[0004]

While the above is an example of the use of a mixer, the purpose of the present invention is to mix, cool, and mix powdered, granular and / or pasty materials that are also useful in such cases. Further development of high-strength mixers that can be heated, dried and / or crushed, for example development of mixers that can be processed in a shorter time overall.

[0005]

The object of the present invention can be achieved by the configurations described in each of the claims.

[0006]

1, a mixer according to the invention comprises a conical mixing vessel 1 having a vertical axis 2 which narrows downwards and has at least one vertical mixing axis 3.
Is rotatable. A large number of elements 4 project outward from the mixing shaft 3 so as to gradually become longer,
Extends to near the side wall 6 of the container 1.

The upper side of the container 1 is closed by a lid 7. The inside of the lid 7 has a substantially elliptical shape to ensure strength and guide the product inward. The product enters the lid 7 upwards along the inside of the side wall 6 as indicated by the reference numeral Pu, moves toward the central portion of the lid 7, and from the central portion as indicated by the reference numeral Pd, the mixing container 1 Descend again below. FIG. 3 shows this flow.

The drive motor 9 is fixed to the top of the lid 7 of the shaft 2 of the central mixing shaft (or mixing screw) 3 by means of a seal and bearing (not shown) on the central lid tube stub. The outer drive shaft 10 of the drive motor 9 is connected to the mixing shaft 3. Mixing container 1 with a lid 7 that can be lifted up freely
Are different types of fast-acting fasteners, for example star screw heads 1.
1 and a screw bolt having a clamping screw 12, which is closed in an air-tight manner, which in operation allows the mixing container 1 to be vacuumed. After loosening the fast-moving fastener, the lid 7 together with its accessories is lifted, for example the arm 41 of FIG.
It can be lifted by the double-acting plunger 42, the cylinder 43, and the second arm 44. In this way, the element 4 can be cleaned, replaced or repaired. Further, the inside of the container 1 can be inspected, or the lid 7 can be removed and quickly replaced with another lid together with the accessory parts. A scraping blade 13 is fixed to the lower end of the mixing shaft 3 to prevent a dead space from being generated at the bottom of the mixing container 1.

The eccentric tube stub 14 is attached to the lid 7, and the stub is opened and closed by the inspection lid 15. This opening and closing is carried out by a rotatable arm 16, which can be screwed by means of a star-shaped screw head 17 of a screw bolt 18 with the upper side log 19 of the stub 14 closed. Further, the lid 7 has an inflow port 20.
Are provided and are used for the cleaning spray device 21. The cleaning / spraying device 21 is expandable / contractible and has a spraying head 22 inside the container 1. Flange 23 on the lower side of the mixing container 1
Is fixed, and the ball valve 24 is attached to the flange 23. The ball valve 24 includes a ball portion 25.

In the left half of FIG. 1, the mixing container 1 is provided with an outer jacket 26, which heats and cools the contents of the product P in the container 1. The jacket 26 comprises connecting tube bases 28 and 29.

Further, as shown in the right half of FIG. 1, the side wall 6 is a so-called "mold" two-layer wall, which is used after welding and connecting at different places. A cooling or heating medium can circulate in the hollow space formed. The lid 7 comprises a tube stub 32 for the glass 33.

According to the invention, the mixing shaft 3 comprises a number of elements 4
The rotation speed N is from high speed to ultra high speed. in this way,
The treated product is subjected to a very strong shearing action by the inside of the side wall 6 and by the element 4, giving a very strong mixing with the product P in a very short time. Although such a mixing action may cause a temperature increase, this temperature increase is neutralized by cooling the side wall 6 of the mixing container 1.

Preferably, the drive motor is configured to rotatably drive the mixing shaft to rotate at 100 to 1,000 revolutions / minute.

In a first preferred embodiment of the invention, the elements 4 each comprise at their outer end one or more mixing pawls 5, the outer end of which is parallel to and parallel to the side wall 6 of the container 1. Extend to the vicinity of 6. Furthermore, the element 4 is rod-shaped and has a large radial dimension (length). Further, the paddle 5 is plate-shaped and has a small radial dimension (length). As shown in the enlarged portion (a) indicated by a lead line in FIG. 1, the paddle 5 is rotatable within the range of an angle A around the major axis of the rod-shaped element. The paddle 5 is adjustable to fit the angle of the wall of the container and is fixed in this adjusted position.

FIG. 2 shows a second preferred embodiment of the present invention in which the lid 7 is lifted up together with the accessory parts. The lid 7 is suspended by a vertically movable horizontal arm 41 of the head of the hydraulic plunger 42 of the lifting cylinder 43, and
3 has a fixed horizontal arm 44 on the upper side, and the mixing container 1 is suspended by the arm 44. It is also possible to use other than hydraulic lifting equipment.

Here, the element 4 comprises a plurality of blades, at least some of which have a variable angle B with respect to a vertical line (or vertical axis).

In the variant shown on the right side of FIG. 2, the mixing shaft 3 and the blade 4 connected to each other are hollow and have an outflow hole 45 through which a gas and / or a liquid can be guided. To do. Further, in FIG. 2, the enlarged portion (b) indicated by a lead line shows in detail the state in which the blade 4 is rotatably connected to the mixing shaft 3. The scraper 13 at the lower end of the mixing shaft 3 is visible.

In the variant shown on the left side of FIG. 2, the angle B made by the blade 4 with respect to the vertical is variable. Further, the side wall 6 of the mixing container 1 is connected to the 1/2 tube spiral portion 46,
Cooling and / or heating fluid passes through the helix 46.
The lid 7 includes a tube stub 36,
Is used as an inlet for the inflow product Pi. At the lower end of the mixing container 1, a flat outflow slide 47 with an operating lever 48 for the outflow product Po is attached.

Above the mixing vessel 1, the mixing shaft 3 is connected by a transmission 49 to a drive motor 9 suspended upside down, which is fixed to the lid 7 by means of a raised tube stub 8. A liquid Li inflow port 50 is attached to the shaft 2. The lid 7 also comprises an inlet 38 for a low-pressure atomizer 39 of the processing liquid and / or gas.

On the right side of the side wall 6 of the mixing container 1, a thermometer 3
5 inlets 34.

A feature and advantage of the present invention as described above is that it utilizes the unique mixing pattern that occurs within a mixing vessel when operating at high speeds. The paddle accelerates the product towards the wall of the container, causing the product to rotate. Due to the conical shape of the wall of the container, the product moves upward due to centrifugal force. After the product reaches the top of the container without the paddle, gravity will cause the product to fall again near the center, establishing circulation. Finally, the centrifugal force causes the product to rub along the inner wall, and friction causes a very strong mixing of the product.

The present invention can be further modified. The high speed rotation of the paddle pushes the product up, but since there is no paddle on the top of the container, the mixing delays its rise, which causes it to begin to fall inward and downward. However, FIG.
Axis 3 with the same rotation speed as the paddle (ie, with a larger outer diameter, thus having a higher linear velocity), as shown in
By placing a chopper (which has a plurality of blades 60) that connects with the container in the top (including the top) area of the container, these blades 60 act to make the product smaller. If the paddle is slow, the product will not be pushed up and the blade 60 will not function. Therefore, the blade 60 does not affect the product. But at high speed, the product is pushed up,
When mixing the liquid product, the blade 60 breaks the lumps and crushes the coarse portion of the solid product.

In another embodiment of the invention, shown in FIG. 5, a chopper 62 is used in the top (including top) area of the container. The chopper 62 has a blade linear velocity of 10 to 20 m.
It is a high-speed knife head of / s. Chopper 62 is mounted through tube stub 32 and is driven by motor 64. The chopper 62 applies additional grinding force to the product. When the paddle is slow, the product will not be pushed up and the chopper 62 will not function. At lower speeds, the blade is stationary and the product will not be affected. However, when the paddle speed is high, the product is pushed up and contacts the chopper 62. As with the blade 60 described above, the chopper 62 breaks the lumps when mixing the liquid product and crushes the coarse portion of the solid product. this is,
It improves the overall efficiency of the process and consequently reduces the processing time.

[Brief description of drawings]

FIG. 1 is a partial left side view and a partial right cross-sectional view of a state in which a mixing device according to a first embodiment having a rod-shaped component provided with a mixing paddle at an outer end thereof is attached, FIG.
Part (a) indicated by a lead line is an enlarged view of details of fastening the paddle to the rod from the side and the front.

FIG. 2 is a mixing device according to a second embodiment with the lid removed and lifted to a height higher than at least the length of the mixing shaft, and the mixing shaft, the mixing element, and the scraping blade being detached from the mixing container and visible. FIG. 3 is a view showing a left side view and a right side view of a portion excluding the outer wall of FIG. 3, in which the portion (b) indicated by a lead line shows details of the rotatable connection of the blade to the mixing shaft from the side. It is the enlarged view seen.

FIG. 3 is a flow chart of products in a mixer according to the present invention.

FIG. 4 is a sectional view of a third embodiment of the mixing device according to the present invention.

FIG. 5 is a sectional view of a fourth embodiment of the mixing device according to the present invention.

[Explanation of symbols]

1 mixing container 2 vertical axis 3 mixed axes 4 elements 5 mixed paddle 6 side walls 7 lid

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B01F 15/00 B01F 15/00 D 15/02 15/02 C 15/06 15/06 Z F term (reference) ) 4G035 AB48 AE02 AE08 AE15 AE19 4G037 AA12 CA03 DA14 DA18 DA20 EA04 4G078 AA04 AA21 AB03 BA03 BA05 BA07 BA09 CA01 CA09 CA15 CA20 DA01 DA06 DA26 DA28 EA08 EA10 EA20

Claims (46)

[Claims] 1. An apparatus for batch mixing, cooling, heating, drying and / or crushing powdered, granular and / or pasty materials, having side walls with smooth inner wall surfaces and a vertical axis, A conical mixing vessel that narrows downwards, a mixing axis that is rotatably mounted to rotate within the vessel along the vertical axis, and that extends from the axis to near the surface of the inner wall of the vessel. And a plurality of substantially radially projecting elements, and one or more mixing elements rotatably mounted at the distal ends of each projecting element to force the material against the sidewall toward the top of the container by centrifugal force. An apparatus comprising a paddle, a chopper at the top of the container for shearing the material at the top of the container above the mixing paddle, and a drive motor for rotatably driving the mixing shaft. 2. The apparatus according to claim 1, wherein the drive motor is configured to rotationally drive the mixing shaft to rotate at a rotational speed of 100 to 1,000 revolutions / minute. 3. The apparatus according to claim 1, further comprising a scraping blade attached near the lower end of the mixing shaft for preventing a dead space from being generated at the bottom of the mixing container. 4. The container further comprises a removable lid attached to the upper end of the conical mixing vessel, the inside of the lid having a substantially elliptical shape, and the product in the mixing vessel during operation is the inner wall surface of the vessel. An apparatus according to claim 1, characterized in that it moves upwards along the inner surface of the lid in the direction of the central part of the lid and then descends again into the mixing container. 5. The apparatus of claim 1, wherein the drive motor is mounted on top of a central tube stub on the lid and the mixing shaft is directly coupled to the drive shaft of the drive motor. 6. The apparatus of claim 5, wherein the lid is hermetically sealable to the mixing vessel. 7. The apparatus of claim 5, wherein the lid is fastened to the mixing container by fasteners. 8. The apparatus of claim 5, wherein the lid comprises an inlet for a high pressure wash sprayer. 9. The apparatus of claim 1, wherein the sidewall of the mixing vessel is a two-layer wall structure for passing cooling or heating fluid having one or more fluid passages. 10. The apparatus of claim 1, further comprising an outer jacket on the mixing vessel for heating and / or cooling the contents of the vessel. 11. The apparatus of claim 1 wherein the mixing vessel is open at its lower end and further comprises a ball valve or slide valve for closing the vessel mounted at the lower end of the mixing vessel. 12. The apparatus of claim 5, wherein the drive motor is mounted on a lid on a raised tube stub that is offset from the vertical axis of the mixing vessel, the mixing axis being coupled to the drive motor through a transmission. . 13. The apparatus of claim 5, wherein the lid further comprises an inlet fitted with a nebulizer for introducing processing liquids and gases. 14. The apparatus of claim 5, wherein the lid further comprises a tube stub having glass attached therein. 15. The apparatus of claim 5, further comprising a thermometer mounted in the inlet of the sidewall of the mixing vessel. 16. The apparatus of claim 5, wherein the lid comprises a tube stub for introducing product. 17. The apparatus of claim 5, wherein the lid comprises a tube stub having a lamp mounted therein. 18. The apparatus of claim 5, further comprising a hoist for lifting and removing the lid from the container. 19. The apparatus of claim 1, wherein the chopper comprises a chopping blade mounted for rotation with the shaft on the mixing paddle. 20. The apparatus of claim 4, wherein the chopper comprises a chopping blade mounted on an independently rotatable shaft extending through the lid. 21. A batch type mixing device for mixing, cooling, heating, drying and / or crushing powdery, granular and / or pasty materials, having side walls with smooth inner wall surfaces and a vertical axis. A conical mixing container narrowing downward, a mixing shaft rotatably mounted so as to rotate in the container along the vertical axis, and the vicinity of the surface of the inner wall of the container from the axis A plurality of rotatably mounted elements projecting generally radially toward the shaft, and fixedly mounted on the shaft above the rotatably mounted elements from the shaft to the inner wall of the container. An apparatus comprising: a plurality of chopping blades that project in a substantially radial direction toward the vicinity of the surface; and a drive motor that rotatably drives the mixing shaft. 22. The apparatus according to claim 21, wherein the drive motor is configured to rotationally drive the mixing shaft to rotate at a rotational speed of 100 to 1,000 revolutions / minute. 23. The apparatus of claim 21, further comprising a scraping blade mounted near the lower end of the mixing shaft to prevent dead space at the bottom of the mixing vessel. 24. A removable lid attached to the upper end of the conical mixing vessel, the interior of the lid having a generally oval shape thereon, wherein the product in the mixing vessel during operation is Moving upwards along the inner wall of the container, moving the inner surface of the lid towards the center of the lid and then descending again into the mixing container,
The device according to claim 21. 25. The drive motor is mounted on the top of a central tube stub on the lid, and the mixing shaft is directly coupled to the drive shaft of the drive motor.
The device according to. 26. The apparatus of claim 24, wherein the lid is hermetically sealable with the mixing vessel. 27. The apparatus of claim 24, wherein the lid is fastened to the mixing container by a quick-action fastener. 28. The apparatus of claim 24, wherein the lid comprises a high pressure wash sprayer inlet. 29. The apparatus of claim 21, wherein the sidewall of the mixing vessel is a two-layered wall structure having one or more fluid passages for passing cooling or heating fluid. 30. The apparatus of claim 21, further comprising an outer jacket on the mixing vessel for heating and / or cooling the contents of the vessel. 31. The apparatus of claim 21 wherein said mixing vessel is open at its lower end and further comprises a ball valve or slide valve for closing the vessel attached to the lower end of the mixing vessel. 32. The drive motor is attached to a lid on a raised tube stub that is offset from the vertical axis of the mixing vessel, the mixing axis being coupled to the drive motor through a transmission. Equipment. 33. The apparatus of claim 24, wherein the lid further comprises an atomizer mounted inlet for introducing process liquids and gases. 34. The device of claim 24, wherein the lid further comprises a tube stub having glass attached therein. 35. The apparatus of claim 24, further comprising a thermometer mounted through an inlet in the sidewall of the mixing vessel. 36. The apparatus of claim 24, wherein the lid comprises a tube stub for introducing product. 37. The apparatus of claim 24, wherein the lid comprises a tube stub having a lamp mounted therein. 38. The apparatus of claim 24, further comprising a hoist for lifting and removing the lid from the container. 39. The apparatus of claim 21, wherein the chopper comprises a blade mounted for rotation with the shaft above the mixing paddle. 40. The apparatus of claim 24, wherein the chopper comprises a chopping blade mounted on an independently rotatable shaft extending through the lid. 41. A device for mixing, cooling, heating, drying and / or crushing powdered, granular and / or pasty materials, which has side walls with smooth inner wall surfaces and a vertical axis, A conical mixing vessel that narrows toward, a mixing axis that is rotatably mounted to rotate within the vessel along the vertical axis, and from the axis toward the surface of the inner wall of the vessel A plurality of generally radially projecting elements and one or more mixing pawls rotatably mounted to the distal end of each projecting element, each mixing paddle being connected to a single element An apparatus comprising a mixing paddle, a chopper at the top of the container for shearing the material above the mixing paddle and above the container, and a drive motor for rotatably driving the mixing shaft. 42. The apparatus according to claim 41, wherein the chopper comprises a chopping blade mounted for rotation with the shaft above the mixing paddle. 43. The apparatus according to claim 41, wherein the mixing vessel further comprises a lid, and the chopper comprises a chopping blade mounted on an independently rotatable shaft extending through the lid. . 44. A device for mixing, cooling, heating, drying and / or crushing powdered, granular and / or pasty materials, which has a side wall with a smooth inner wall surface and a vertical axis, A conical mixing container that narrows downwardly from the top to the bottom of the container; a mixing shaft rotatably mounted to rotate within the container along the vertical axis; A plurality of elements projecting substantially radially toward the surface of the inner wall of the, and one or more mixing paddles rotatably mounted at the distal end of each projecting element, and above the mixing paddle. An apparatus comprising: a chopper at the top of the container for shearing the material at the top of the container; and a drive motor for rotatably driving the mixing shaft. 45. The apparatus of claim 44, wherein the chopper comprises a chopping blade mounted for rotation with the shaft above the mixing paddle. 46. The mixing vessel further comprises a lid, and the chopper comprises a chopping blade mounted on an independently rotatable shaft extending through the lid.
The device according to 4.