CN211651257U - Desulfurization gypsum powder cooling device - Google Patents
Desulfurization gypsum powder cooling device Download PDFInfo
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- CN211651257U CN211651257U CN202020368119.5U CN202020368119U CN211651257U CN 211651257 U CN211651257 U CN 211651257U CN 202020368119 U CN202020368119 U CN 202020368119U CN 211651257 U CN211651257 U CN 211651257U
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Abstract
The utility model discloses a desulfurized gypsum powder cooling device, which comprises a rotary cooler, wherein the rotary cooler comprises a cylinder body and a driving device for driving the cylinder body to rotate; a shoveling plate is arranged on the inner wall of the cylinder body; a plurality of cooling pipes which are longitudinally arranged are arranged in the barrel, a first pipe plate and a second pipe plate are respectively arranged at two ends of the barrel, a feed port is formed in the first pipe plate, and a feed sealing cover and a discharge sealing cover are arranged at two ends of the barrel; the feeding sealing cover is connected with the spiral feeder, and an air outlet is formed in the top of the feeding sealing cover and is connected with the fan through an air outlet pipeline; a discharging sealing cover for covering the discharging hole is arranged on the periphery of the cylinder; a discharge hole is formed in the bottom of the discharge sealing cover; the discharge port is connected with the discharging conveyor. Adopt the utility model discloses a difficult problem of gesso continuous cooling can be solved to the device, wets in avoiding the gesso cooling process, has improved the productivity. Less auxiliary equipment, low investment and high cooling efficiency.
Description
Technical Field
The utility model relates to a gesso cooling technical field, concretely relates to desulfurization gesso cooling device.
Background
The desulfurized gypsum production line uses lime or limestone neutralization method to desulfurize and purify the flue gas produced after the combustion of sulfur-containing fuel (coal, oil, etc.) to obtain industrial by-product, and its purity is high, its composition is stable, and has no radioactivity, and after hydrated its crystal structure is compact, so that the hydrated hardened body has higher strength.
The main component of the desulfurized gypsum produced by the power plant is CaSO4·2H2O, calcining in a rotary kiln to obtain the building gypsum based on beta-hemihydrate gypsum, wherein the process is expressed by an equation of CaSO4·2H2O (heating) → CaSO4·1/2H2O+3/2H2O, calcined building Gypsum (CaSO)4·1/2H2O) cooling, and storing in a large storage bin for later use. The temperature of the calcined building gypsum is about 120 ℃, and the gypsum stored in the storage bin can be used in the next working section only by being sealed and naturally cooled to be within 70-80 ℃ because the gypsum is prevented from getting damp. The natural cooling time is long, which is not beneficial to the industrialized continuous production.
With the promotion of reform of wall materials in China and the development of the building industry, the market demand of the paper-surface gypsum board is increasingly strong, large-scale continuous production is imperative, and the mode of hermetically cooling the gypsum powder in a storage bin seriously influences the productivity. Therefore, the problems that the traditional desulfurized gypsum powder is long in required time for natural cooling, and the gypsum powder absorbs water and gets damp in the cooling process need to be solved, the problem that the traditional process cannot be used for continuous cooling is solved to improve the efficiency, large-scale continuous production can be realized, and increasingly strong market demands are met.
SUMMERY OF THE UTILITY MODEL
To the prior art, the utility model aims at providing a desulfurization gesso cooling device. The device solves the problem of continuous cooling of the gypsum powder and improves the cooling efficiency of the gypsum powder; the problem that the gypsum powder absorbs water and gets damp in the cooling process is solved, the productivity is improved, and the production cost is reduced.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a desulfurization gypsum powder cooling device, which comprises a rotary cooler, wherein the rotary cooler comprises a cylinder body and a driving device for driving the cylinder body to rotate; a shoveling plate is arranged on the inner wall of the cylinder body; a plurality of cooling pipes which are longitudinally arranged are arranged in the cylinder body, a first pipe plate and a second pipe plate are respectively arranged at two ends of the cylinder body, a feed port is arranged on the first pipe plate, and two ends of each cooling pipe are respectively fixed on the first pipe plate and the second pipe plate; a feeding sealing cover is arranged at one end of the cylinder body, which is provided with the first tube plate; one end of the feeding sealing cover is provided with a feeding opening, the feeding opening is connected with a spiral feeder, and the spiral feeder sequentially passes through the feeding opening and the feeding hole and extends into the barrel; the top of the feeding sealing cover is provided with an air outlet which is connected with a fan through an air outlet pipeline; the cylinder body is provided with a discharge hole at a position close to the second tube plate, and the periphery of the cylinder body is provided with a discharge sealing cover for covering the discharge hole; a discharge hole is formed in the bottom of the discharge sealing cover; the discharge port is connected with the discharging conveyor.
Preferably, the included angle between the axis of the cylinder and the horizontal plane is 1-5 degrees. The rotary cooler is obliquely arranged to be beneficial to the movement of the gypsum powder from the feeding hole to the discharging hole.
Preferably, the driving device comprises a transmission machine and a front riding wheel and a rear riding wheel which are positioned at two sides of the transmission machine. The transmission machine is matched with the front riding wheel and the rear riding wheel to work to drive the rotary cooler to rotate. The transmission machine also determines the rotation speed of the rotary cooler: the rotating speed of the rotary cooler is too high, the cooling time of the gypsum powder in the rotary cooler is shortened, and the gypsum powder can be discharged without being reduced to the target temperature; the rotating speed of the rotary cooler is too slow, the cooling time is prolonged, the cooling efficiency is reduced, and the cooling cost is increased. Therefore, the cooling time of the gypsum powder can be controlled by adjusting the speed of the driving machine.
Preferably, a support is arranged below the feeding sealing cover and a support is arranged below the discharging sealing cover. The support can fix feeding sealed cowling and ejection of compact sealed cowling, guarantees that feeding sealed cowling and ejection of compact sealed cowling do not follow the rotation when the barrel rotates.
Preferably, the feeding sealing cover and the discharging sealing cover are both connected with the cylinder body through sealing belts. Except using the sealing strip can also use a sealing washer, the purpose is to ensure that the connection of the feeding sealing cover and the discharging sealing cover and the cylinder body has no gap, so that cold air outside the cylinder body can not enter the cylinder body through the gap, and the hot material is prevented from getting damp due to the contact with wet air. Sealing strip or seal ring are the rubber material, and the sealing strip can also play the effect of buffering like this, and when the barrel rotated, the sealed cowling of feeding and ejection of compact sealed cowling can guarantee not following the rotation. Therefore, the sealing belt is worn, and the wearing condition of the sealing belt or the sealing washer needs to be checked at intervals, so that the sealing belt or the sealing washer can be replaced in time.
Preferably, the discharge holes are uniformly distributed on the cylinder body. The discharge sealing cover only covers the discharge hole, and one end of the cylinder body, which is provided with the second tube plate, cannot be sealed by the discharge sealing cover, because the cooling tube is fixed at one end of the second tube plate and needs to be communicated with the outside to suck cold air. The discharge opening can set up one and also can the equipartition on the barrel, when the barrel rotated to make the discharge opening orientation downwards, the gesso just can be discharged through the discharge opening, gets into the discharge gate of ejection of compact sealed cowling bottom, is transported to the production line through ejection of compact conveyer again.
Preferably, the cooling pipes surround at least two concentric circles around the rotation axis of the cylinder. The cooling pipe is a pipe with two open ends, one end of the cooling pipe sucks cold air, and after heat exchange with gypsum powder, the other end of the cooling pipe discharges hot air. And the gypsum powder moves from the feed inlet to the discharge outlet, and the gypsum powder and the cold air move reversely, so that the heat exchange efficiency can be improved.
Preferably, the angle between the shoveling plate and the axis of the cylinder is 8-10 degrees. The shoveling plates and the cooling pipe bundles can disperse the gypsum powder and improve the heat exchange efficiency of the gypsum powder. The shoveling plate can also help the gypsum powder to move from the feeding hole to the discharging hole.
Preferably, the height of the shoveling plate is smaller than the distance between the inner wall of the cylinder and the outermost layer of the cooling pipe.
Preferably, the screw feeder has the same diameter as the feed inlet. This ensures that the space within the cartridge is closed. The diameter of the screw feeder may be less than or equal to the diameter of the feed opening. When the diameter of the spiral feeder is equal to that of the feeding opening, the feeding sealing cover is sealed; when the diameter of the spiral feeder is smaller than that of the feeding opening, external air can enter the feeding sealing cover through the feeding opening and is pumped out from an air outlet above the feeding sealing cover by the fan, and the space in the cylinder is ensured to be closed. The screw feed will affect the cooling of the landplaster: the feeding speed is too fast, the amount of gypsum powder in the rotary cooler is large, and incomplete material cooling is easily caused; the feeding speed is too slow, and although the material can be fully cooled, the cooling efficiency is reduced, and the cooling cost is increased. The cooling efficiency of the landplaster can be optimized by adjusting the feed rate of the screw feeder.
The utility model has the advantages that:
1. the utility model discloses a device utilizes slewing equipment, and built-in cooling tube increases the distribution of shoveling plate, inhales the cooling tube of rotary cooler with lower air of temperature (ambient temperature) with the fan in, adopts next door conduction heat transfer mode to carry out the heat transfer cooling with the gesso after calcining. The possibility of water absorption and moisture regain due to the direct contact of cold air and hot materials is avoided.
2. The utility model discloses a device is compared with the airtight natural cooling of storehouse formula, and the device continuity cooling, cooling time is short, and is effectual, has improved productivity greatly, and when product quality obtained the assurance, also reduced the investment of storage equipment.
3. The device of the utility model has the advantages of small occupied area, less auxiliary equipment, low investment and no secondary pollution. Adds a new opportunity for the development of the deep processing industry of the desulfurized gypsum industry.
Drawings
FIG. 1: a schematic diagram of a desulfurized gypsum powder cooling device;
FIG. 2: a schematic view of a feed containment hood;
FIG. 3: a schematic view of a discharge seal housing;
FIG. 4: the shoveling plates are distributed on the inner wall of the cylinder body;
shown in the figure: 1. the cooling device comprises a rotary cooler, 2 a fan, 3 a spiral feeder, 4 a discharging conveyor, 5 an air outlet pipeline, 6 a support, 7 a cylinder, 8 a transmission machine, 9 a front supporting wheel, 10 a rear supporting wheel, 11 a shovelling plate, 12 a cooling pipe, 13 a first pipe plate, 14 a second pipe plate, 15 a feeding sealing cover, 16 a discharging sealing cover, 17 a feeding hole, 18 a discharging hole, 19 a discharging hole, 20 a feeding opening and 21 an air outlet.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or being of relative importance in time. The term "longitudinal" refers to a direction parallel to the side wall of the can.
As mentioned in the background of the invention, the prior art equipment can not realize continuous closed cooling of gypsum powder and has long cooling time. Based on this, the utility model provides a desulfurization gesso cooling device. As shown in fig. 1 to 4, the device comprises a rotary cooler 1, wherein the rotary cooler 1 comprises a cylinder 7 and a driving device for driving the cylinder 7 to rotate; a shoveling plate 11 is arranged on the inner wall of the cylinder 7; a plurality of cooling tubes 12 which are longitudinally arranged are arranged in the cylinder 7, a first tube plate 13 and a second tube plate 14 are respectively arranged at two ends of the cylinder 7, a feed port 17 is arranged on the first tube plate 13, and two ends of each cooling tube 12 are respectively fixed on the first tube plate 13 and the second tube plate 14; a feeding sealing cover 15 is arranged at one end of the cylinder 7, which is provided with the first tube plate 13; a feeding opening 20 is formed in one end of the feeding sealing cover 15, the feeding opening 20 is connected with the spiral feeder 3, and the spiral feeder 3 sequentially passes through the feeding opening 20 and the feeding hole 17 and extends into the barrel 7; the top of the feeding sealing cover 15 is provided with an air outlet 21, and the air outlet 21 is connected with the fan 2 through an air outlet pipeline 5; a discharge hole 19 is formed in the position, close to the second tube plate 14, of the cylinder 7, and a discharge sealing cover 16 for covering the discharge hole 19 is arranged on the periphery of the cylinder 7; a discharge hole 18 is formed at the bottom of the discharge sealing cover 16; the discharge port 18 is connected with the discharge conveyor 4.
The included angle between the axis of the barrel 7 and the horizontal plane is 1-5 degrees. The driving device comprises a transmission machine 8, and a front riding wheel 9 and a rear riding wheel 10 which are positioned at two sides of the transmission machine 8. And supports 6 are arranged below the feeding sealing cover 15 and below the discharging sealing cover 16. The feeding sealing cover 15 and the discharging sealing cover 16 are connected with the cylinder body 7 through sealing belts. The discharge holes 19 are uniformly distributed on the cylinder 7. The cooling pipe 12 surrounds at least two concentric circles by the rotating axis of the cylinder 7. The angle between the shoveling plate 11 and the axis of the cylinder 7 is 8-10 degrees. The height of the shovelling plate 11 is smaller than the distance between the inner wall of the cylinder 7 and the outermost layer of the cooling pipe 12.
The device utilizes the fan 2 to introduce ambient air into the cooling pipes 12 of the rotary cooler 1 in an induced air mode, the cooling pipes 12 are distributed in the cylinder 7 of the rotary cooler 1, cold air passes through the pipe side, and gypsum powder passes through the shell side. After calcination, the gypsum powder with the temperature of about 120 ℃ is conveyed into a cylinder 7 of the rotary cooler 1 through the spiral feeder 3, the material flows in the forward direction, the air in the cooling pipe 12 flows in the reverse direction, and the material and the air in the cooling pipe 12 perform partition wall heat exchange to cool the material. The gypsum powder entering the rotary cooler 1 is driven by the cooling pipe 12 and the shoveling plate 11 to be continuously turned along with the rotation of the rotary cooler 1, so that the heat exchange is accelerated. The cooling pipe 12 is fixed with the second pipe plate 14 through the first pipe plate 13, and the first pipe plate 13 and the second pipe plate 14 enclose the cylinder 7 of the rotary cooler 1 into a closed space, so that the gypsum powder in the cylinder 7 can be cooled in the closed space, and moisture in the air is prevented from entering the cylinder 7 to enable the gypsum powder to absorb moisture. The rotary cooler 1 has a certain inclination angle, the gypsum powder moves from the feeding hole 17 to the discharging hole 18 along the cooling pipe 12, the heat is continuously taken away by the cold air in the cooling pipe 12, and the temperature is continuously reduced. The cooled gypsum powder (70-80 ℃) enters the discharging sealing cover 16 through the discharging hole 19 on the cylinder 7 and then enters the discharging conveyor 4 from the discharging hole 18 at the bottom of the discharging sealing cover 16 to be conveyed to a gypsum board production line. The fan 2 sucks out the air after heat exchange from the feeding sealing cover 15 of the rotary cooler 1 through the air outlet pipeline 5, and tail gas is exhausted after the air passes through the cyclone dust collector and the bag type dust collector. The temperature of the tail gas is about 50-60 ℃.
In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the technical solutions of the present application will be described in detail below with reference to specific embodiments.
The test materials used in the embodiment of the utility model are the conventional test materials in the field, and can be purchased through commercial channels.
Examples
The fan 2 is turned on, the fan 2 sucks cold air of the surrounding environment through the cooling pipe 12 from one end of the cylinder 7 on which the second tube plate 14 is arranged, discharges the cold air from one end of the cylinder 7 on which the first tube plate 13 is arranged into the feeding sealing cover 15, enters the air outlet pipeline 5 from the air outlet 21 at the top of the feeding sealing cover 15, and discharges the cold air from the fan 2.
The screw feeder 3 feeds the calcined gypsum powder at about 120 ℃ into the barrel 7 of the rotary cooler 1. The cold air passes through the tube pass, and the gypsum powder passes through the shell pass. The gypsum powder moves from the feed inlet 17 to the discharge outlet 18 under the action of the rotation of the cylinder 7 and the shoveling plate 11, is shoveled and dispersed by the shoveling plate 11 and the cooling pipe 12 in the cylinder 7 in the movement process, then is scattered on the cooling pipe 12, and continuously exchanges heat with cold air in the cooling pipe 12. The gypsum powder is cooled to 70 ℃, discharged through the discharge hole 19 and enters the discharge sealing cover 16. Finally enters the discharging conveyor 4 through a discharging port 18 of the discharging sealing cover 16. The cooling of the desulfurized gypsum powder is completed.
Comparative example
And (3) after calcination, feeding the gypsum powder with the temperature of about 120 ℃ into a closed bin, spreading the gypsum powder on the floor of the closed bin, flattening and naturally cooling. When the temperature of the gypsum powder is reduced to 70 ℃, the gypsum powder is collected and sent to a gypsum board production line.
1t of gypsum powder was cooled by the processes of examples and comparative examples, respectively, and the cooling parameters are shown in Table 1.
TABLE 1 comparison of different Cooling Processes
Can know by table 1, adopt the utility model discloses a device carries out the gesso cooling back, and cooling time is less than the cooling of the airtight feed bin of tradition greatly to the gesso after the cooling does not absorb water and becomes damp. So the device of the utility model has good application prospect and can be popularized and used.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The desulfurization gypsum powder cooling device is characterized by comprising a rotary cooler, wherein the rotary cooler comprises a cylinder and a driving device for driving the cylinder to rotate; a shoveling plate is arranged on the inner wall of the cylinder body; a plurality of cooling pipes which are longitudinally arranged are arranged in the cylinder body, a first pipe plate and a second pipe plate are respectively arranged at two ends of the cylinder body, a feed port is arranged on the first pipe plate, and two ends of each cooling pipe are respectively fixed on the first pipe plate and the second pipe plate; a feeding sealing cover is arranged at one end of the cylinder body, which is provided with the first tube plate; one end of the feeding sealing cover is provided with a feeding opening, the feeding opening is connected with a spiral feeder, and the spiral feeder sequentially passes through the feeding opening and the feeding hole and extends into the barrel; the top of the feeding sealing cover is provided with an air outlet which is connected with a fan through an air outlet pipeline; the cylinder body is provided with a discharge hole at a position close to the second tube plate, and the periphery of the cylinder body is provided with a discharge sealing cover for covering the discharge hole; the bottom of the discharging sealing cover is provided with a discharging port, and the discharging port is connected with a discharging conveyor.
2. The device of claim 1, wherein the angle between the axis of the cylinder and the horizontal plane is 1-5 °.
3. The apparatus of claim 1, wherein the drive means comprises a drive train and front and rear idlers on either side of the drive train.
4. The apparatus of claim 1, wherein a support is provided below the infeed and outfeed seal housings.
5. The apparatus of claim 1, wherein the infeed and outfeed seal cups are each connected to the cartridge by a sealing band.
6. The apparatus of claim 1, wherein the discharge openings are evenly distributed on the barrel.
7. The apparatus of claim 1, wherein the cooling tubes enclose at least two concentric circles about a rotational axis of the barrel.
8. The device according to claim 1, wherein the angle between the shovelling plate and the axis of the cylinder is 8-10 degrees.
9. The apparatus of claim 1, wherein the height of the flight is less than the distance between the inner wall of the drum and the outermost layer of the cooling tube.
10. The apparatus of claim 1, wherein the screw feeder has a diameter that is the same as a diameter of the feed port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020368119.5U CN211651257U (en) | 2020-03-23 | 2020-03-23 | Desulfurization gypsum powder cooling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020368119.5U CN211651257U (en) | 2020-03-23 | 2020-03-23 | Desulfurization gypsum powder cooling device |
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| CN211651257U true CN211651257U (en) | 2020-10-09 |
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| CN202020368119.5U Active CN211651257U (en) | 2020-03-23 | 2020-03-23 | Desulfurization gypsum powder cooling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405315A (en) * | 2021-06-29 | 2021-09-17 | 宁波北新建材有限公司 | Powder aging system for gypsum board production line and control method |
| CN113405272A (en) * | 2021-08-19 | 2021-09-17 | 江苏思克赛斯机械制造有限公司 | Cooling arrangement is carried in processing of gypsum production line |
-
2020
- 2020-03-23 CN CN202020368119.5U patent/CN211651257U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405315A (en) * | 2021-06-29 | 2021-09-17 | 宁波北新建材有限公司 | Powder aging system for gypsum board production line and control method |
| CN113405272A (en) * | 2021-08-19 | 2021-09-17 | 江苏思克赛斯机械制造有限公司 | Cooling arrangement is carried in processing of gypsum production line |
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