CN101323150A - Horizontal type mixer with barrel configuration determined according to Froude number - Google Patents
Horizontal type mixer with barrel configuration determined according to Froude number Download PDFInfo
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- CN101323150A CN101323150A CNA200710009102XA CN200710009102A CN101323150A CN 101323150 A CN101323150 A CN 101323150A CN A200710009102X A CNA200710009102X A CN A200710009102XA CN 200710009102 A CN200710009102 A CN 200710009102A CN 101323150 A CN101323150 A CN 101323150A
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Abstract
A horizontal stirring mill in cylinder configuration defined by Froude number comprises a horizontal cylinder body, a mixing shaft which penetrates the cylinder body along the axial direction and can act as support rotationally, a plurality of mixing arms which are arranged along the axial and circumferential directions of the mixing shaft at intervals and mixing blades arranged at the ends of the mixing arms. The cylinder body has an inner cylinder diameter limited by the gyration radius of the mixing blade. The gyration radius of the mixing blade is defined according to the Froude number of the particles of stirred material and the circumferential velocity at the top of the mixing blade. The Froude number can be fixed between 5 and 9. The stirred material can have best motion condition in the cylinder body because of the proper configuration design of the invention, so the required evenness degree of the stirred material can be achieved within a shorter time and filling rate is high. The horizontal stirring mill has high production efficiency, great production capacity and good mixing performance, can ensure an optimum effect of mixing,, thus being especially suitable for producing high-quality commercial sand pulp effectively.
Description
Technical field
The present invention relates to a kind of horizontal mixer, in particular for producing the horizontal mixer of commodity mortars such as dry-mixed mortar, premixing mortar, it has the cylindrical shell configuration of determining according to froude number.
Background technology
Now, commodity mortars such as the dry-mixed mortar that extensive employing batch production is produced in architectural engineering, premixing mortar substitute traditional scene and mix and stir mortar.Commodity mortar have metering accurately, product quality and advantages such as good stability, wide adaptability, serviceability and workability are good, environmental protection, use commodity mortar to improving construction quality and work efficiency, reduction labour intensity and solving environmental problem, play crucial effect.It is raw material that commodity mortar adopts inorganic coagulation material, sand, mineral admixture and additive etc. such as cement usually, also adds some high molecular polymerization fibres and wood-fibreds sometimes, stirs in mixer or stirrer for mixing by a certain percentage and makes.
As the key equipment of producing commodity mortar, the research and development of mixer and application are subjected to the attention of industry always.At present, provide the multiple mixer that commodity mortar is produced that can be used for, comprise vertical or horizontal, twin axle or single axle, continous way or step mixer.Application shows that existing mixer roughly can satisfy the production needs of commodity mortar.But, for can be economical, produce high-quality commodity mortar efficiently, the mixed performance of mixer still has the requirement of further raising.For example, expectation is by furtheing investigate the aspects such as relation of material movement state and mixed effect in the mixer and being optimized and improving by the structure to the overall configuration of machine, mixer is further improved, so that high performance mixer to be provided at aspects such as mixture homogeneity, mixing efficiencies.
Summary of the invention
The purpose of this invention is to provide a kind of horizontal mixer of determining according to the froude number cylindrical shell configuration, high mixed performance that has.
For this reason, horizontal mixer with cylindrical shell configuration of determining according to froude number provided by the invention, comprise horizontal cylinder, pass described cylinder and rotatably mounted shaft vertically, along described shaft axially and a plurality of mixing arms of being provided with at interval of circumferencial direction, be arranged on the stirring vane of described mixing arm end, it is characterized in that: described cylinder has the cylinder internal diameter that the radius of gyration by described stirring vane limits, and the radius of gyration of described stirring vane is determined according to the peripheral speed on froude number that is stirred material particles and described stirring vane top, described froude number is the expression inertia force that is stirred mixed material and the dimensionless number of the ratio of acceleration of gravity, and is definite by following formula: Fr=V
2/ R * g, wherein Fr is a froude number, and R is the radius of gyration of described stirring vane, and V is the peripheral speed on described stirring vane top, and g is an acceleration of gravity.
Further, described cylinder has the cylindrical shell length of being determined by volume and described cylinder internal diameter.
Best, described froude number Fr is between 1～9.
Best, described froude number Fr is between 5～9.
Best, the peripheral speed V on described stirring vane top is 5～9m/s.
Horizontal mixer with cylindrical shell configuration of determining according to froude number provided by the invention is compared with existing mixer, has following beneficial effect: by rational configuration design, make the material that is stirred in cylindrical shell, form best motion state, can in the shorter time, make mixing of materials meet the requirements of the uniformity, and have high filling rate.This horizontal mixer has high production efficiency, big production capacity and good mixing performance, can guarantee that the mixed effect of material reaches best, is specially adapted to produce expeditiously high-quality commodity mortar.
Below, by embodiment the present invention is described in further detail.
Description of drawings
Fig. 1 is the schematic diagram with horizontal mixer cylinder part of the cylindrical shell configuration of determining according to froude number provided by the invention.
Fig. 2 is the cutaway view along A-A direction among Fig. 1.
Fig. 3 illustrates the schematic diagram of the material particles motion state of different froude numbers.
The specific embodiment
The invention provides the horizontal mixer that a profit has the cylindrical shell configuration of determining according to froude number, be specially adapted to produce expeditiously the high-quality commodity mortar.Its structure comprises referring to figs. 1 through shown in Figure 2:
Horizontal cylinder 2 is horizontal fixed and is bearing on the frame 1.Cylinder 2 inner formation are held the chamber that is stirred material, have not shown dog-house, discharge port on the barrel of cylinder 2, dog-house, discharge port place are provided with not shown feeding door, Dump gate respectively, feeding door, Dump gate be respectively by not shown switching mechanism control and open and close, and feeds intake to finish, the discharging operation.
Shaft 3 passes cylinder 2 vertically, and its two ends are by on two perpendicular end surface of the rotatably mounted cylinder 2 of bearing portion, and an end extends to outside the frame 1.
A plurality of mixing arms 4, along shaft 3 axially and circumferencial direction be provided with at interval.
Stirring vane 5 is arranged on the end away from shaft 3 of mixing arm 4.
Drive unit (not shown) is arranged on a side of frame 1, and connects an end that drives shaft 3.
Main points of the present invention are: by the research to the relation of material movement state and mixed effect in the mixer, determine the overall structure optimal parameter of machine, so that mixer has high production efficiency, big production capacity and good mixing performance, guarantee that the mixed effect of material reaches best.
With reference to Fig. 3, the material particles that is stirred in the mixer has the different motion state under the condition of different froude number Fr, therefore produces different mixed effects.Froude number Fr is the dimensionless number that expression is stirred the ratio of mixed material inertia force and acceleration of gravity, is determined by following formula: Fr=V
2/ R * g, wherein Fr is a froude number, and R is the radius of gyration of stirring vane, and V is the peripheral speed on stirring vane top, and g is an acceleration of gravity.
According to above-mentioned formula, under certain peripheral speed V situation, the radius of gyration R size of stirring vane is determined by froude number Fr, can determine the cylinder inside diameter D of mixer thus, after the cylinder volume of mixer is determined, can further determine the cylindrical shell length L.Therefore, behind selected froude number Fr, can determine the cylinder size and the configuration of mixer.Froude number Fr numerical value is more little, and then barrel diameter is big more, and equipment is short fat type, and its filling rate is little, mixing time is long, output is little; Froude number Fr numerical value is big more, and then barrel diameter is more little, and cylindrical shell length is long more, and material, is difficult for stirring to hypomotility in drum shaft, and increases the difficulty of device fabrication and maintenance.
Test shows that froude number Fr material particles between 1 to 9 can both be stirred, but required mixing time differs bigger.Take all factors into consideration mixing evenness and mixing time, froude number Fr is preferably between 5 to 9.The peripheral speed V on stirring vane top is preferably 5～9m/s.
Described in detail below by a specific embodiment:
When the cylinder volume of mixer is 2m
3, froude number Fr is 9, and the peripheral speed V on stirring vane top is 7m/s, and gravity acceleration g is 9.8m/s
2, according to formula F r=V
2The radius of gyration R that/R * g calculates stirring vane is 0.555m.After ignoring the gap between stirring vane top and the cylinder inwall, the cylinder inside diameter D equals the stirring vane radius of gyration R of twice, and promptly D=2r=1.11m behind calculating of cylinder volume calculations formula and rounding, can determine that the length L of cylinder is about 2m.
More than combine embodiment and describe the present invention, but this is not construed as limiting the invention, any modification of making under same design, variation and replacement also all belong to the scope of protection of the invention.
Claims (5)
1, horizontal mixer with cylindrical shell configuration of determining according to froude number, comprise horizontal cylinder, pass described cylinder and rotatably mounted shaft vertically, along described shaft axially and a plurality of mixing arms of being provided with at interval of circumferencial direction, be arranged on the stirring vane of described mixing arm end, it is characterized in that: described cylinder has the cylinder internal diameter that the radius of gyration by described stirring vane limits, and the radius of gyration of described stirring vane is determined according to the peripheral speed on froude number that is stirred material particles and described stirring vane top, described froude number is the expression inertia force that is stirred mixed material and the dimensionless number of the ratio of acceleration of gravity, and is definite by following formula: Fr=V
2/ R * g, wherein Fr is a froude number, and R is the radius of gyration of described stirring vane, and V is the peripheral speed on described stirring vane top, and g is an acceleration of gravity.
2, the horizontal mixer with cylindrical shell configuration of determining according to froude number according to claim 1 is characterized in that: described cylinder has the cylindrical shell length of being determined by volume and described cylinder internal diameter.
3, the horizontal mixer with cylindrical shell configuration of determining according to froude number according to claim 1 and 2, it is characterized in that: described froude number Fr is between 1～9.
4, the horizontal mixer with cylindrical shell configuration of determining according to froude number according to claim 3, it is characterized in that: described froude number Fr is between 5～9.
5, the horizontal mixer with cylindrical shell configuration of determining according to froude number according to claim 1, it is characterized in that: the peripheral speed V on described stirring vane top is 5～9m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710009102 CN101323150B (en) | 2007-06-14 | 2007-06-14 | Horizontal type mixer with barrel configuration determined according to Froude number |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710009102 CN101323150B (en) | 2007-06-14 | 2007-06-14 | Horizontal type mixer with barrel configuration determined according to Froude number |
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| Publication Number | Publication Date |
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| CN101323150A true CN101323150A (en) | 2008-12-17 |
| CN101323150B CN101323150B (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200710009102 Active CN101323150B (en) | 2007-06-14 | 2007-06-14 | Horizontal type mixer with barrel configuration determined according to Froude number |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018149542A (en) * | 2018-05-29 | 2018-09-27 | 日本コークス工業株式会社 | Method for operation of dry medium agitation type pulverizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4132906C2 (en) * | 1991-10-04 | 1994-09-29 | Loedige Maschbau Gmbh Geb | Using a plasterboard reconditioning machine |
| JPH07239180A (en) * | 1994-02-28 | 1995-09-12 | Tamagawa Mach Kk | Horizontal agitator |
| CN201094908Y (en) * | 2007-06-14 | 2008-08-06 | 福建南方路面机械有限公司 | Horizontal stirring machine with barrel configuration determined by Froude number |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018149542A (en) * | 2018-05-29 | 2018-09-27 | 日本コークス工業株式会社 | Method for operation of dry medium agitation type pulverizer |
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| CN101323150B (en) | 2010-06-23 |
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Address after: The East China Sea Baogai Industrial Area District of Quanzhou City, Fujian province 362000 Patentee after: Fujian Nanfang pavement machinery Co., Ltd Address before: The East China Sea Baogai Industrial Area District of Quanzhou City, Fujian province 362000 Patentee before: FUJIAN SOUTH HIGHWAY MACHINERY Co.,Ltd. |