CN117225678A - Screen rotary screening machine - Google Patents
Screen rotary screening machine Download PDFInfo
- Publication number
- CN117225678A CN117225678A CN202311231805.2A CN202311231805A CN117225678A CN 117225678 A CN117225678 A CN 117225678A CN 202311231805 A CN202311231805 A CN 202311231805A CN 117225678 A CN117225678 A CN 117225678A
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- China
- Prior art keywords
- screen
- screen cylinder
- rotary
- cylinder body
- circular ring
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- Pending
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- 238000012216 screening Methods 0.000 title claims description 27
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000007873 sieving Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000033001 locomotion Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000010440 gypsum Substances 0.000 description 27
- 229910052602 gypsum Inorganic materials 0.000 description 27
- 239000000843 powder Substances 0.000 description 19
- 239000012535 impurity Substances 0.000 description 14
- 239000002994 raw material Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000002245 particle Substances 0.000 description 8
- 150000004683 dihydrates Chemical class 0.000 description 7
- 239000002699 waste material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000002686 phosphate fertilizer Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000001354 calcination Methods 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- -1 i.e. Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
A rotary sieving machine for sieving the materials with high water content and poor flowability is composed of speed-reducing motor, drive axle and sieving drum, and features stable running, no vibration, long service time and low frequency.
Description
Technical Field
The invention relates to a mechanical screening method and equipment, in particular to equipment and a method for directly carrying out dust-free continuous classification treatment on viscous materials with large moisture content and poor fluidity.
Background
In the industrial production of building gypsum powder, it is necessary to produce gypsum powder, i.e., gypsum dihydrate (CaSO) 4 ·2H 2 Calcining the O) powder to generate semi-hydrated gypsum (CaSO) 4 ·1/2H 2 O) building gypsum powder, the natural dihydrate gypsum raw material has extremely low water content and good fluidity, along with the social requirement, the production scale is enlarged, the natural gypsum supply is far short of the production field requirement, and simultaneously, in response to the call of national environmental protection and waste utilization, the waste desulfurized gypsum produced by the coal-fired thermal power plant and the waste phosphogypsum produced by the phosphate fertilizer plant are used as raw powder for producing the building gypsum, the industrial dihydrate gypsum raw material is sold from the power plant and the fertilizer plant as waste treatment, and the industrial dihydrate gypsum raw material inevitably contains many other impurities, such as brick blocks, stone, clothes wood blocks, packaging bags and the like, and the waste in other numerous industrial productionImpurities, although the amount of which is extremely small, are less than 0.1% in the raw materials of the dihydrate gypsum powder, but are not easily found in the raw materials of the industrial gypsum powder, directly enter a gypsum powder production line, seriously damage gypsum powder production equipment, and are blocked in the gypsum powder production equipment for building to stop the operation of the whole gypsum powder production line.
In the normal production process of building gypsum powder, raw materials of the dihydrate gypsum are transported and conveyed by a belt conveyor, the impurities are buried in the gypsum powder in a mixed mode and move along with the belt conveyor, the speed is high, firstly, the impurities are not easy to find, secondly, the impurities are not easy to find out, even if the impurities are detected out, the impurities are dangerous to operate, the aim of grading removal is achieved in an industrial mechanical screening mode, however, the normal desulfurization gypsum water content of a power plant and a phosphate fertilizer factory is poor in sticky fluidity about 12%, the normal screening screen is utilized for screening the raw materials of the desulfurization dihydrate gypsum powder in an up-and-down vibration mode, firstly, the processing amount is insufficient to meet the production field requirement, secondly, the impurities are extremely poor in water fluidity and even cannot flow, the impurities can be agglomerated due to up-and-down vibration of a screen in the screening field, the screening is worse and even the screening cannot be carried out directly, in order to effectively solve the problem of using conventional vibration screening, and enterprises need to carry out pre-drying treatment on the screened materials, so that investment is increased or natural drying equipment is increased, the production field is not only increased, but the production cost of enterprises are lowered.
Disclosure of Invention
The invention provides a screen rotary screening machine which is suitable for directly screening wet industrial granular materials with poor water-containing flow and stickiness.
The invention relates to a screen rotary screening machine, which consists of a speed reducing motor, a transmission shaft and a screen cylinder, and is characterized in that the transmission shaft is fixedly connected and matched with the speed reducing motor and the screen cylinder respectively, the speed reducing motor generates rotary power, the rotary power is transmitted to the screen cylinder through the transmission shaft to enable the screen cylinder to rotate, screened materials are scattered and classified in the process of carrying out circular rotary motion along with the screen in the screen cylinder, and the materials smaller than the screen holes directly pass through the screen holes in a rotary mode under the action of self gravity
Impurities which fall into the fine material bin and are larger than the sieve holes, such as large particles of bricks, iron blocks, gypsum blocks and the like or wastes of packaging bags, clothes and the like with large areas, cannot be discharged from the end face of a discharge hole of the sieve cylinder body through the sieve holes.
The screen rotary screening machine is characterized in that the screen cylinder body is formed by fixing a circular ring, a screen and a shaft sleeve together, the circular ring can be formed by adopting round steel or flat steel, parallel transverse connecting pieces with the same interval distance are fixedly connected to the outer circumferential surface of the circular ring to form the screen, and the transverse connecting pieces of the screen can be iron wires, steel bars or round steel, wherein the round steel is the best, and the round steel has high strength and high impact resistance. The width interval of the parallel transverse connecting pieces is the minimum size of the screen, the length size is the length between two circular rings, the main purpose of screening is to remove large sundries in raw materials, the passing area of granular raw material powder can be maximized, the passing resistance is minimized, and large materials cannot pass through as long as the interval of the transverse connecting pieces is determined, and the screen structure increases the passing area of gypsum powder and improves screening benefit; the shaft sleeve is fixed in the center of a circular ring on one end face of the screen cylinder body, and the shaft sleeve is matched with the transmission shaft to transmit rotary power generated by the speed reducing motor, so that the screen cylinder body performs circular rotary motion, and the end face of the screen cylinder body fixed with the shaft sleeve is a discharge hole of a large block of coarse grain material.
The screen rotary screening machine is characterized in that the reducing motor is positioned on one side of the discharge hole of the screen cylinder body and is far away from the feed inlet of the screen cylinder body, and water vapor and corrosive gas emitted by gypsum powder in the rotary motion process in the screen cylinder body are far away from the reducing motor, so that direct and indirect corrosion and damage to the reducing motor are reduced, the working time of the reducing motor is prolonged, and the maintenance frequency of the reducing motor is reduced.
The screen rotary screening machine is characterized in that the screened material is fed into a screen cylinder body along the axial direction of the screen cylinder body in a linear motion mode (such as a belt conveying mode); the same feeding speed is that the momentum of the massive impurity is different from that of the tiny gypsum powder particles, the massive impurity has large weight and large momentum, and the massive impurity moves along with the screen cylinder in a circular manner in the screen cylinder, moves along the axis direction of the screen cylinder and is discharged from the discharge end face of the screen cylinder, in fact, the momentum difference between the massive impurity material and the tiny particle raw material during feeding is utilized, and the rotating screen is utilized to separate the large particles from the tiny particles, so that the feeding direction or the feeding direction is obvious for the screen cylinder; if the fed raw materials enter the screen cylinder for rotation in a mode of feeding along the vertical direction of the axis of the screen cylinder, namely approaching to the radial direction, the large materials do not have momentum and power moving along the axial direction of the screen cylinder, and are retained in the screen cylinder along with the circumferential rotation of the screen to be retained in the screen cylinder, so that the materials are blocked, and the feeding is difficult; the momentum of the small particle materials is small, and the small particle materials are gathered together by viscous flow difference, but the small particle materials are scattered into loose materials under the action of the rotary impact of the rotary screen transverse connecting piece and are directly separated out through the screen holes; the screening method is characterized in that the fed raw materials are screened and classified under the impact dispersion action of the axial movement acting force of the fed raw materials in the screen barrel and the rotary screen, and is different from the screening mode of vibrating the screen up and down.
The screen rotary screening machine is characterized in that a feeding baffle is arranged on a feeding hole of a screen cylinder body so as to prevent gypsum powder entering the screen cylinder body from spilling in the rotary process, and the baffle is a circular ring plate with the width smaller than 10 cm and is fixed on the circumferential section of the feeding hole.
Compared with the screening mode of up-and-down vibration of the screen, the rotary screening method has the advantages that firstly, the rotary movement of the screen is smooth circular rotary movement, the equipment is in a smooth running state, the whole equipment is damaged in a vibration-free mode in running, the running time of the equipment is long, and the frequency of maintenance in the running process is extremely low.
Drawings
FIG. 1 is a schematic view of a rotary screen machine
FIG. 2 is a schematic view of a screen cylinder
FIG. 3 is a right side view of the screen cylinder
FIG. 4 is a front cross-sectional view of a screen cylinder
FIG. 5 is a schematic diagram of the operation of a screen rotary classifier.
In the accompanying drawings: 1-gear motor 2-transmission shaft 3-axle sleeve mounting.
4-shaft sleeve 5-screen 6-circular ring 7-baffle 8-belt feeder
9-a fine grain bin 10-a coarse grain bin 11-a motor base.
Description of the embodiments
Fig. 1 is a schematic diagram of a screen rotary screening machine, which mainly comprises a gear motor 1 arranged on a motor seat 11, a transmission shaft 2 and a screen cylinder body shown in fig. 2, wherein the screen cylinder body comprises a circular ring 6, a screen 5 and a shaft sleeve 4; the circular ring 6 is a circumferential framework of a screening cylinder, the screen 5 is formed by transverse connecting pieces fixedly connected on the outer circumference of the circular ring 6 at equal intervals, the shaft sleeve 4 is fixedly connected in the center of the circular ring of the end face of the screen cylinder connected with the gear motor 1 through the shaft sleeve fixing piece 3, the end face of the circumference of the screen cylinder far away from the gear motor 1 is fixedly connected with the baffle 7 on the feeding end face, fig. 3 is a right view of the screen cylinder, and fig. 4 is a front section view of the screen cylinder.
Fig. 5 is a schematic diagram of the operation of the rotary screening machine, wherein the end face of the feed inlet of the screen cylinder is the circumferential end face of the belt feeder 8 for feeding, and the discharge outlet of the screen cylinder is the circumferential end face fixed with the shaft sleeve 4.
The rotary sieving machine specifically operates as follows: the gear motor 1 arranged on the motor seat 11 is started to generate rotary power, the screen cylinder body shown in fig. 5 performs circular rotary motion through the transmission shaft 2 and the shaft sleeve 4, the screened material continuously enters the screen cylinder body through the belt feeder 8, the water-containing cohesive and aggregated fine grain raw materials smaller than the screen holes are dispersed under the action of circular rotary impact of the transverse connecting piece of the screen 5, the materials with large granularity larger than the screen holes directly fall into the fine grain storage bin 9 under the action of self gravity, the materials with large granularity cannot be dispersed in the screen cylinder body, the materials with large granularity are moved in the axial direction of the screen cylinder body under the action of the power given by the feeding belt feeder 8 and are discharged from the discharge end surface of the screen cylinder body into the coarse grain storage bin 10, and therefore the wet sticky fine grain materials with water content are effectively separated from coarse grain materials and other impurities.
Claims (5)
1. A screen rotary screening machine consists of a speed reducing motor, a transmission shaft and a screen cylinder body and is characterized in that the transmission shaft is fixedly connected and matched with the speed reducing motor and the screen cylinder body respectively, the speed reducing motor generates rotary power, the rotary power is transmitted to the screen cylinder body through the transmission shaft to enable the screen cylinder body to rotate, and screened materials are dispersed and graded in the process of performing circular rotary motion along with the screen in the screen cylinder body.
2. The rotary screen sieving machine according to claim 1, wherein the screen cylinder is formed by combining a circular ring, a screen and a shaft sleeve, the circular ring is formed by round steel or flat steel, the screen is formed by parallel transverse connecting pieces which are fixedly connected on the outer circumferential surface of the circular ring and have the same interval distance, and the transverse connecting pieces of the screen can be iron wires, steel bars or round steel, wherein the round steel is the best; the shaft sleeve is fixed in the screen cylinder.
3. The rotary screen classifier of claim 1 wherein the de-number motor is located at one end of the screen cylinder outlet, remote from the screen cylinder inlet.
4. A rotary screen classifier according to claim 1, wherein the material to be classified is fed into the screen cylinder in a moving manner in the axial direction of the screen cylinder.
5. The rotary screen sieving machine according to claim 1, wherein the feeding opening of the screen cylinder is provided with a feeding baffle plate, and the baffle plate is a hollow circular ring with the width smaller than 10 cm and the outer circumference equal to the outer circumference of the screen cylinder and is fixed on the circumferential section of the feeding opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311231805.2A CN117225678A (en) | 2023-09-22 | 2023-09-22 | Screen rotary screening machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311231805.2A CN117225678A (en) | 2023-09-22 | 2023-09-22 | Screen rotary screening machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117225678A true CN117225678A (en) | 2023-12-15 |
Family
ID=89084000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311231805.2A Pending CN117225678A (en) | 2023-09-22 | 2023-09-22 | Screen rotary screening machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117225678A (en) |
-
2023
- 2023-09-22 CN CN202311231805.2A patent/CN117225678A/en active Pending
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