CN114505228A - Self-heating type flexible screen for coal mine drying - Google Patents
Self-heating type flexible screen for coal mine drying Download PDFInfo
- Publication number
- CN114505228A CN114505228A CN202210199753.4A CN202210199753A CN114505228A CN 114505228 A CN114505228 A CN 114505228A CN 202210199753 A CN202210199753 A CN 202210199753A CN 114505228 A CN114505228 A CN 114505228A
- Authority
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- China
- Prior art keywords
- flexible screen
- coal mine
- heating
- drying
- screen cloth
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 52
- 239000003245 coal Substances 0.000 title claims abstract description 48
- 238000001035 drying Methods 0.000 title claims abstract description 36
- 239000004744 fabric Substances 0.000 claims abstract description 12
- 230000002269 spontaneous effect Effects 0.000 claims abstract 2
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 abstract description 10
- 238000005485 electric heating Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 239000002245 particle Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000036619 pore blockages Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/56—Heated screens
- B07B1/62—Heated screens heated by direct electric heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
- F26B23/06—Heating arrangements using electric heating resistance heating
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a self-heating coal mine drying flexible screen, and relates to the technical field of flexible screens. The utility model provides a dry flexible screen cloth in spontaneous heating formula colliery, includes variable power supply, variable power supply passes through electric wire and heating wire electric connection, heating wire fixed mounting is on flexible screen cloth, flexible screen cloth fixed surface installs temperature sensor. The electric heating wire embedded in the screen is electrified to generate heat, so that the coal mine screened on the screen is heated and dried. Therefore, the drying process can be added by replacing the tension and relaxation sieve screen without adding a new process link and corresponding equipment, so that the cost is greatly saved; meanwhile, the production efficiency is improved because the screening and the drying are carried out simultaneously. The technical problem that the coal mine particles are agglomerated and the viscosity is increased to block the sieve pores in the screening link due to high water content of the coal mine is solved.
Description
Technical Field
The invention belongs to the technical field of flexible screens, and particularly relates to a self-heating coal mine drying flexible screen.
Background
The relaxation sieve is coal mine particle size classification equipment, and the flexible screen cloth is widely applied to the relaxation sieve. In the process of screening a coal mine by a tension-relaxation sieve, coal mine particles are agglomerated or have overlarge viscosity to block sieve pores due to high water content of the coal mine, so that the screening efficiency is reduced. Therefore, dehydration and drying treatment of the coal mine are required. The coal mine drying is firstly a scheme of a combustion furnace and a roller dryer, the combustion furnace generates high-temperature flue gas by combusting low-calorific-value coal, and then the high-temperature flue gas is introduced into the roller dryer to dry the coal mine. Because burning coal can produce smoke dust and harmful gas which pollute the atmosphere, a combustion furnace using coal mine gas as fuel is provided, and although the smoke dust and the harmful gas are greatly reduced, certain harmful gas can be produced. The device for drying the coal mine by utilizing the high-temperature gas generated by heating the air from the far infrared external part is developed, the device is more environment-friendly by utilizing electric energy, but the drying device is large in size, and meanwhile, a link is added in the coal dressing process, so that the production efficiency is reduced.
In the prior art, extra equipment is required to be added before the screening step to dry the coal mine, which is equivalent to adding a process step, one or two drying devices are required to be purchased, and the combustion furnace can generate smoke dust and gas which pollute the environment, so that the coal mine screening method is not environment-friendly. For a coal sorting plant without a drying process, if the drying process of coal is added, the process needs to be rearranged and modified, and the modification is inconvenient and the cost is higher for the requirement of spare installation space in a workshop.
Therefore, it is necessary to provide a self-heating coal mine drying flexible screen to solve the technical problems.
Disclosure of Invention
The invention aims to solve the technical problem of providing a self-heating coal mine drying flexible screen, aiming at the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the self-heating coal mine drying flexible screen comprises a variable power supply, wherein the variable power supply is electrically connected with a heating wire through an electric wire, the heating wire is fixedly installed on the flexible screen, and a temperature sensor is fixedly installed on the surface of the flexible screen.
In the self-heating coal mine drying flexible screen provided by the invention, the flexible screen is made of polyurethane, and the heating wires are uniformly embedded in the flexible screen.
In the self-heating coal mine drying flexible screen provided by the invention, the number of the temperature sensors is five, the five temperature sensors are respectively positioned at four corners of the screen surface and the center of the screen surface, the surface temperature of the flexible screen can be read, and the surface temperature of the flexible screen is the average value of the temperature values of the five temperature sensors.
In the self-heating coal mine drying flexible screen provided by the invention, the heating temperature of the electric heating wire can be adjusted by adjusting the voltage of the variable power supply.
Compared with the prior art, the self-heating coal mine drying flexible screen provided by the invention has the following beneficial effects:
the invention provides a self-heating coal mine drying flexible screen, which is used for heating and drying a coal mine screened on a screen by electrifying and heating electric heating wires embedded in the screen. Therefore, the drying process can be added by replacing the tension and relaxation sieve screen without adding a new process link and corresponding equipment, so that the cost is greatly saved; meanwhile, the production efficiency is improved because the screening and the drying are carried out simultaneously. The technical problem that the coal mine particles are agglomerated and the viscosity is increased to block the sieve pores in the screening link due to high water content of the coal mine is solved.
Compared with an independent drying process, the self-heating flexible screen for coal mine drying is lower in cost, and special drying equipment is omitted. Meanwhile, for the condition that no drying process needs to be added, a drying process link does not need to be redesigned, and a spare equipment installation space does not need to be reserved, so that the modification cost is greatly reduced.
The invention provides a self-heating coal mine drying flexible screen, which directly heats a coal mine in contact with the self-heating flexible screen, so that coal mine particles are dried and dehydrated more directly, and the effects of reducing particle agglomeration and screen pore blockage are more obvious.
Drawings
FIG. 1 is a schematic structural view of a preferred embodiment of a self-heating coal mine drying flexible screen provided by the invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a schematic structural view of a flexible screen according to the present invention.
Reference numbers in the figures: 1. a variable power supply; 2. a temperature sensor; 3. an electric heating wire; 4. a flexible screen.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Exemplary embodiments of the invention are shown in the drawings.
The first embodiment is as follows:
as shown in fig. 1, the self-heating coal mine drying flexible screen comprises a variable power supply 1, wherein the variable power supply 1 is electrically connected with an electric heating wire 3 through an electric wire, the electric heating wire 3 is fixedly arranged on a flexible screen 4, and a temperature sensor 2 is fixedly arranged on the surface of the flexible screen 4.
Further, in an embodiment of the present invention, as shown in fig. 2, the flexible screen 4 is made of polyurethane, and the heating wires 3 are uniformly embedded inside the flexible screen 4. The self-heating screen mesh is formed by uniformly embedding heating wires 3 in a flexible screen mesh 4, heating the heating wires 3 by electrifying, and controlling the electrifying current to enable the maximum heating temperature to be below 170 ℃. The coal mine materials screened on the screen surface are heated and dried, so that the conditions that the screen holes are blocked by particle agglomeration and viscosity increase caused by overhigh moisture content of the coal mine in the screening process are reduced.
Example two:
as shown in fig. 2 and fig. 3, on the basis of the first embodiment, the present invention provides a technical solution: the number of the temperature sensors 2 is five, the five temperature sensors 2 are respectively positioned at four corners of the screen surface and the center of the screen surface, the surface temperature of the flexible screen 4 can be read, and the surface temperature of the flexible screen 4 is the average value of the temperature values of the five temperature sensors 2. The temperature sensors are arranged on the surface of the screen, and are distributed at the four corners and the center of the screen surface. The average value of the temperatures measured by the five temperature sensors 2 is the current heating temperature of the screen surface, and the temperature of the screen surface is set to be not higher than 170 ℃.
Further, in the present embodiment, as shown in fig. 2, the heating temperature of the heating wire 3 can be adjusted by adjusting the voltage of the variable power source 1. The heating wire 3 is buried inside the flexible screen 4, and is connected with a variable power supply to generate heat, so that the coal mine screened on the screen surface is heated, the current inside the heating wire 3 is increased or reduced by adjusting the voltage of the variable power supply 1, and the temperature of the whole screen surface is increased or reduced.
In this embodiment: the model number of the temperature sensor 2 is M310.
The working principle of the self-heating coal mine drying flexible screen provided by the invention is as follows:
the first innovation point implementation step:
the first step is as follows: the self-heating screen mesh is formed by uniformly burying electric heating wires 3 in a flexible screen mesh 4;
the second step is that: the heating wire 3 is heated by energization, and the maximum heating temperature is controlled to be 170 ℃ or lower by controlling energization current.
The implementation step of the second innovation point:
the first step is as follows: the electric heating wire 3 is embedded in the flexible screen 4 and is connected with a variable power supply to generate heat so as to heat the coal mine screened on the screen surface;
the second step is that: the current inside the heating wire 3 is increased or decreased by adjusting the variable supply voltage 1, thereby raising or lowering the temperature of the entire screening surface.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a dry flexible screen cloth in spontaneous heating formula colliery, includes variable power (1), its characterized in that: the variable power supply (1) is electrically connected with the heating wire (3) through an electric wire, the heating wire (3) is fixedly installed on the flexible screen (4), and the surface of the flexible screen (4) is fixedly provided with the temperature sensor (2).
2. The self-heating coal mine drying flexible screen cloth according to claim 1, characterized in that the flexible screen cloth (4) is made of polyurethane, and the heating wires (3) are uniformly embedded in the flexible screen cloth (4).
3. The self-heating coal mine drying flexible screen cloth according to claim 1, characterized in that the temperature sensors (2) are five in total, the five temperature sensors (2) are respectively positioned at the four corners and the center of the screen surface, the surface temperature of the flexible screen cloth (4) can be read, and the surface temperature of the flexible screen cloth (4) is the average value of the temperature values of the five temperature sensors (2).
4. The self-heating coal mine drying flexible screen cloth according to claim 1, characterized in that the heating temperature of the heating wire (3) can be adjusted by adjusting the voltage of the variable power supply (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210199753.4A CN114505228A (en) | 2022-03-02 | 2022-03-02 | Self-heating type flexible screen for coal mine drying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210199753.4A CN114505228A (en) | 2022-03-02 | 2022-03-02 | Self-heating type flexible screen for coal mine drying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114505228A true CN114505228A (en) | 2022-05-17 |
Family
ID=81552997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210199753.4A Pending CN114505228A (en) | 2022-03-02 | 2022-03-02 | Self-heating type flexible screen for coal mine drying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114505228A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117054282A (en) * | 2023-08-09 | 2023-11-14 | 珠江水利委员会珠江流域水土保持监测中心站 | High-precision portable sediment content measuring device and method with different grade particle sizes |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB665313A (en) * | 1948-09-06 | 1952-01-23 | Eugene Marie Burstlein | Improvements in or relating to the sifting or screening of moist crushed coal or ore |
| CN2664797Y (en) * | 2003-11-14 | 2004-12-22 | 清华大学 | Heating device possessing screen |
| CN204107822U (en) * | 2014-07-02 | 2015-01-21 | 襄阳三珍食品有限公司 | A kind of starch vibratory sieve of improvement |
| CN105107736A (en) * | 2015-08-29 | 2015-12-02 | 安徽龙川橡塑科技有限公司 | Tension type screen and production technology |
| CN106182843A (en) * | 2016-07-14 | 2016-12-07 | 洛阳诚创耐磨材料有限公司 | A kind of preparation method of high abrasion height screen rate industrial and mineral drum sieve |
| CN206037672U (en) * | 2016-08-30 | 2017-03-22 | 云南滇王驿农业科技开发有限公司 | Special product classification of farming and intelligent drying equipment |
| CN212574059U (en) * | 2020-08-11 | 2021-02-23 | 上海阿兵食品机械有限公司 | Electromagnetic rice frying machine |
| CN213147302U (en) * | 2020-08-04 | 2021-05-07 | 青海瑞湖生物资源开发有限公司 | Raw material powder dispersion drying device |
| CN214502019U (en) * | 2021-03-10 | 2021-10-26 | 河南嘉洋环保科技有限公司 | A drying device for sodium acetate production |
| CN113560178A (en) * | 2021-07-29 | 2021-10-29 | 中方县华汉茶叶庄园有限公司 | Automatic screening device and screening method for tea production |
| CN215278522U (en) * | 2021-07-17 | 2021-12-24 | 安徽方园毅智筛分科技有限责任公司 | Flexible rubber surface composite screen |
-
2022
- 2022-03-02 CN CN202210199753.4A patent/CN114505228A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB665313A (en) * | 1948-09-06 | 1952-01-23 | Eugene Marie Burstlein | Improvements in or relating to the sifting or screening of moist crushed coal or ore |
| CN2664797Y (en) * | 2003-11-14 | 2004-12-22 | 清华大学 | Heating device possessing screen |
| CN204107822U (en) * | 2014-07-02 | 2015-01-21 | 襄阳三珍食品有限公司 | A kind of starch vibratory sieve of improvement |
| CN105107736A (en) * | 2015-08-29 | 2015-12-02 | 安徽龙川橡塑科技有限公司 | Tension type screen and production technology |
| CN106182843A (en) * | 2016-07-14 | 2016-12-07 | 洛阳诚创耐磨材料有限公司 | A kind of preparation method of high abrasion height screen rate industrial and mineral drum sieve |
| CN206037672U (en) * | 2016-08-30 | 2017-03-22 | 云南滇王驿农业科技开发有限公司 | Special product classification of farming and intelligent drying equipment |
| CN213147302U (en) * | 2020-08-04 | 2021-05-07 | 青海瑞湖生物资源开发有限公司 | Raw material powder dispersion drying device |
| CN212574059U (en) * | 2020-08-11 | 2021-02-23 | 上海阿兵食品机械有限公司 | Electromagnetic rice frying machine |
| CN214502019U (en) * | 2021-03-10 | 2021-10-26 | 河南嘉洋环保科技有限公司 | A drying device for sodium acetate production |
| CN215278522U (en) * | 2021-07-17 | 2021-12-24 | 安徽方园毅智筛分科技有限责任公司 | Flexible rubber surface composite screen |
| CN113560178A (en) * | 2021-07-29 | 2021-10-29 | 中方县华汉茶叶庄园有限公司 | Automatic screening device and screening method for tea production |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117054282A (en) * | 2023-08-09 | 2023-11-14 | 珠江水利委员会珠江流域水土保持监测中心站 | High-precision portable sediment content measuring device and method with different grade particle sizes |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220517 |
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| RJ01 | Rejection of invention patent application after publication |