CN109945611B - Disc type drying device for recycling moisture and heating in combination - Google Patents

Disc type drying device for recycling moisture and heating in combination Download PDF

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Publication number
CN109945611B
CN109945611B CN201910185264.1A CN201910185264A CN109945611B CN 109945611 B CN109945611 B CN 109945611B CN 201910185264 A CN201910185264 A CN 201910185264A CN 109945611 B CN109945611 B CN 109945611B
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drying
steam
temperature
disc
shell
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CN109945611A (en
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李永兆
李斌杰
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Qingdao Chuangke Machinery Equipment Manufacturing Co ltd
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Qingdao Chuangke Machinery Equipment Manufacturing Co ltd
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Abstract

A disc type drying device for recycling moisture and heating in a combined mode comprises a shell (1), a plurality of layers of drying discs (2) are arranged inside the shell (1), steam pipelines (12) are arranged on two sides of the shell (1), the steam pipelines (12) are communicated with the inside of a hollow drying disc (2) through connecting pipes, a feed inlet (7) and a hot and wet air outlet (6) are formed in the upper portion of the shell (1), the hot and wet air outlet (6) is connected with a compressor (14) through a pipeline and can recycle and compress hot and send the hot and wet air into the steam pipelines (12) again, a high-temperature heat pump (15) can be further connected to an air outlet of the steam pipeline (12), the wet air in the steam pipeline (12) is recycled and heated and then output dry air is sent into the shell (1), the drying discs (2) can be further arranged in a size-alternating mode, and a dry air airflow path and a logistics flow path are optimized through setting position angles of, greatly improves the heat exchange efficiency, reduces emission and improves the drying effect at the same time.

Description

Disc type drying device for recycling moisture and heating in combination
Technical Field
The invention relates to the field of drying equipment, in particular to a disc type drying device for recycling moisture and heating in a combined mode.
Background
The disc drier is a drying device which is developed by integrating a series of advanced technologies and continuously improving on the basis of an intermittent stirring and conducting drier, is a multi-layer fixed hollow heating circular material carrying disc, is stirred by a rotary rake, and is vertical and continuous and mainly used for heat conduction. The drying process is that heat carrier is introduced into hollow discs in different layers to heat wet material on the disc surface indirectly in heat conducting mode, and under the action of the rotating rake blades, the wet material in the material is evaporated at operation temperature and the vapor is exhausted with tail gas from the apparatus to obtain qualified dried product continuously in the bottom of the apparatus.
At present, domestic disc drying equipment all discharges a large amount of hot moisture in the drying process, not only waste a large amount of water and heat, and the hot moisture that discharges in the drying process still probably smugglies dust, harmful substance etc. in some materials secretly, also can cause the pollution to the environment, and these disc drying equipment also energy consumption itself is high, and steam consumption is big, and then lead to the coal-fired volume to last the increase, at present, the atmospheric pollution form of china is very severe, the energy consumption that gives first place to coal causes environmental air quality to descend, the haze phenomenon frequently takes place, reduce the coal-fired consumption in the drying process and can effectively alleviate the destruction to the environment.
Disclosure of Invention
In order to solve the problems, the invention provides a disc type drying device, materials are dried in a mode of combining the introduction of hot medium into a drying disc for heating and the introduction of hot air after the recycling of wet air, the heat efficiency is high, the dust emission is less, and the effects of substantial energy conservation and emission reduction are achieved by combining the reasonable planning of an airflow path and a material operation path.
The purpose of the invention is realized by the following technical scheme.
The utility model provides a disk drying device, includes the casing, and the casing is inside to be provided with a plurality of layers of drying dish, its characterized in that, the casing both sides are equipped with steam conduit, the drying dish is inside empty, steam conduit communicates with each other with each drying dish is inside through the connecting pipe, the casing bottom is equipped with the discharge gate, and upper portion is equipped with feed inlet and hot humid air export, hot humid air export passes through the pipeline and links to each other with power device, power device retrieves hot humid air and provides the heat to the casing in.
According to the disc type drying device, the power device is a compressor, and hot wet gas can be recycled and compressed and then sent into the steam pipeline again through the air inlet of the steam pipeline.
According to the disc type drying device, the other side opposite to the air inlet side of the steam pipeline is provided with the air outlet, the air outlet is connected with the high-temperature heat pump, the bottom of the shell is provided with the high-temperature dry air inlet, and the high-temperature heat pump recovers and heats wet air in the steam pipeline and outputs dry air to be sent into the shell of the disc type drying device through the high-temperature dry air inlet.
According to the disc type drying device, the drying disc is provided with an opening in the middle and is connected with the shell through the connecting pipe on the side surface, the main shaft is longitudinally arranged in the shell, the main shaft is connected with a plurality of layers of rake rods and rake blades, and the rake rods and the rake blades are positioned on the upper surface of the drying disc.
In the disc type drying device, the rake blades are hinged on the rake rod and can float up and down along with the disc surface of the drying disc to keep contact.
According to the disc type drying device, the drying discs are divided into the large drying discs and the small drying discs which are arranged alternately up and down.
In the above-mentioned disc-type drying device, the blades of the large drying disc upper surface form a first angle with the large drying disc upper surface, and the blades of the small drying disc upper surface form a second angle with the small drying disc upper surface, the first angle enables the material on the large drying disc to flow along an exponential spiral line towards the inner side of the blanking port, and the second angle enables the material on the small drying disc to flow along an exponential spiral line towards the outer side.
According to the disc type drying device, the baffle plate is arranged at the outer edge of the large drying disc, the baffle plate is arranged at the inner edge of the small drying disc, and the dry air entering from the high-temperature dry air inlet at the bottom of the shell flows along a curved path from bottom to top under the limitation of the large drying disc, the small drying disc and the baffle plate.
According to the disc type drying device, the outlet air temperature of the compressor and/or the high-temperature heat pump is more than 100 ℃.
In conclusion, the beneficial effects of the invention are as follows:
the disc type drying device has the characteristics of moisture recycling and combined heating, discharged hot moisture can be recycled and processed by the power device to be changed into steam or hot air, and then the steam or hot air is introduced into equipment, so that the cyclic use of resources is realized, external steam supply is not needed, in addition, each layer of drying disc can be synchronously heated by an internal heat medium and bottom hot air, the heat efficiency is high, the humidity in the equipment is high and low under the blowing of the bottom hot air, dust is difficult to float to the top of the equipment, when a compressor extracts the hot moisture in the equipment, the interior of the equipment can be pumped into micro negative pressure, so that the material is dried more quickly, the drying efficiency is improved, the drying disc is further arranged in a large-small alternative mode, and a dry air airflow path and a logistics flow path are optimized by setting the angle of the rake blade position, the heat exchange efficiency is greatly improved, and the drying effect is.
Drawings
The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. In the drawings:
FIG. 1 is a schematic structural view of a tray type drying apparatus for recycling wet gas and combined heating according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a tray type drying device for recycling wet gas and combined heating according to embodiment 2 of the present invention.
The components represented by the reference numerals in the figures are:
1. the device comprises a shell, 2, a drying disc, 3, a main shaft, 4, a rake rod, 5, rake blades, 6, a hot and humid air outlet, 7, a feeding hole, 8, a baffle plate, 9, a hot and humid air flow direction, 10, a transmission device, 11, a discharging hole, 12, a steam pipeline, 13, a condensed water outlet, 14, a compressor, 15, a high-temperature industrial high-temperature heat pump, 16, a high-temperature dry air inlet, 17 and a condensed water outlet.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.
It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. Other terms used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between," "adjacent," etc.).
Example 1
Referring to fig. 1, fig. 1 is a disc drying device for recycling moisture and heating in combination, which includes a casing 1, multiple layers of drying discs 2 are disposed inside the casing 1, steam pipes 12 are disposed on two sides of the casing 1, the drying discs 2 are empty, the steam pipes 12 are communicated with the interiors of the drying discs 2 through connecting pipes, a discharge port 11 is disposed at the bottom of the casing 1, a feed port 7 and a hot and humid gas outlet 6 are disposed at the upper part of the casing 1, the hot and humid gas outlet 6 is connected with a compressor 14 through a pipe, and hot and humid gas can be recycled and compressed and then sent into the steam pipes 12 again through an air inlet of the steam pipes 12.
Further, as shown in fig. 1, an air outlet (a condensed water outlet 13 when not connected to other components) is provided on the other side opposite to the air inlet side of the steam pipeline 12, the air outlet is connected to a high temperature heat pump 15, a high temperature dry air inlet 16 is provided at the bottom of the casing 1, and the high temperature heat pump 15 recovers and heats the humid air in the steam pipeline 12 and outputs dry air to be sent into the casing 1 of the disc drying device through the high temperature dry air inlet 16.
Through the connection mode, the high-temperature heat pump 15 can continuously obtain low-temperature moisture from the position of the air outlet (the condensed water outlet 13) of the steam pipeline 12, then the high-temperature moisture is heated to high-temperature dry air and conveyed to the bottom of the shell 1 to improve the drying efficiency, meanwhile, the high-temperature dry air is gradually changed into low-temperature moisture in the upward drying process and the moisture in the material escapes, the mixed hot moisture is conveyed into the compressor 14 from the hot moisture outlet 6 to continuously provide low-temperature steam for the compressor 14, the compressor 14 compresses the low-temperature steam into high-temperature steam and outputs the high-temperature steam to the steam pipeline 12, the cooled low-temperature moisture returns to the high-temperature heat pump again and then continuously circulates, and the drying device is ensured to work all.
The following is further described in connection with the specific structure within the housing 1:
as shown in fig. 1, the casing 1 is a vertical cylinder structure, is made of stainless steel, and is wrapped by heat-insulating material, the inside of the casing 1 is provided with a plurality of layers of drying disks 2 from top to bottom, the middle of each drying disk 2 is provided with an opening, the inside of each drying disk is hollow and is connected with the casing 1 through a connecting pipe on the side surface, a main shaft 3 penetrates through the middle of each drying disk 2, and the main shaft 3 is connected with a plurality of layers of rake rods 4 and rake blades 5 which are distributed on each layer of drying disk 2 and used for turning and moving materials.
Preferably, the blades 5 are hinged to the blade lever 4 and can float up and down along the surface of the drying disk 2 to maintain contact.
In this embodiment, the drying trays 2 are divided into large drying trays and small drying trays, and the large drying trays and the small drying trays are alternately arranged up and down and are respectively connected with the casing 1 through hollow connecting pipes.
Further, rake lever 4 and rake 5 on every layer of drying pan 2 are set for according to drying pan 2 size, especially suit with big drying pan, as shown in the figure, big drying pan upper surface the rake 5 with big drying pan upper surface is first angle, little drying pan upper surface the rake 5 with little drying pan upper surface is the second angle, first angle makes material on the big drying pan flows towards the inboard of blanking mouth along the index helix, the second angle makes material on the little drying pan flows to the outside along the index helix, makes things convenient for the material to fall into next layer of drying pan 2 under the effect of rake 5.
Preferably, the rake blade 5 has an angle, and the existence of this angle makes the rake blade 5 better to the material upset effect on the drying dish, and the scope of this angle can be selected at 135 ~ 180, and in concrete work, can satisfy the material of each layer of different humidity and can evenly turn through the angle of adjustment and design every layer of rake blade 5 and drying dish upper surface, the angle of rake blade 5 and cooperation rake blade 5 in the angle of direction of rotation (with the angle of rotatory tangent circle), and be covered with the quotation.
Preferably, the diameter of the central hole of the large drying plate is larger than that of the central hole of the small drying plate, so that the materials cannot be spilled when falling from the large drying plate to the small drying plate.
In the disc type drying device, the baffle plate 8 is arranged at the outer edge of the large drying disc, the baffle plate 8 is arranged at the inner edge of the small drying disc, and the dry air entering from the high-temperature dry air inlet 16 at the bottom of the shell 1 flows along a curved path from bottom to top under the limitation of the large drying disc, the small drying disc and the baffle plate 8.
In the disc drying device, the outlet air temperature of the compressor 14 and/or the high-temperature heat pump 15 is above 100 ℃.
Furthermore, the drying plate 2, especially the large drying plate, is provided with the baffle plate 8 to limit the airflow and prevent the materials from spilling from the edge, the baffle plate 8 at the edge of the large drying plate preferentially faces outwards to be connected with the inner wall of the shell 1, the airflow rising below can only pass through the middle of the large drying plate and then diffuse around, and the phenomenon that the airflow rises only along the inner wall of the shell 1 and then flows away is avoided, so that the path becomes tortuous, and the drying is more thorough.
In order to ensure that the airflow rises along a curved path, a mode of reducing the gap between the small drying disk and the main shaft 3 can be adopted, and of course, preferably, the inner edge of the small drying disk is also provided with a baffle plate 8, so that the material is convenient to pour in, the direction of the small drying disk is preferably towards the inner side, and the height of the small drying disk is greater than that of the harrow bar 4, so that the material is prevented from flowing out.
In this embodiment, the energy for the rotation of the main shaft 3 comes from the transmission device 10 at the lower part of the housing 1, and the rake lever 4 and the rake blade 5 are arranged on the bottom plane of the housing 1, and when the material is dried and falls into the bottom plane of the housing 1, the material will flow out from the discharge hole 11 under the action of the rake lever 4 and the rake blade 5.
In this embodiment, the steam flows from left to right in the steam pipeline 12, enters the drying material from one end of the drying tray 2, and is cooled to become condensed water, and the condensed water is collected from an air outlet (condensed water outlet 13) at the end of the steam pipeline 12.
In this embodiment, the top of the housing 1 is conical, the middle of the housing is provided with a feed inlet 7, the top of the housing is provided with a hot and humid gas outlet 6, and moisture escaping from the material is discharged into the compressor 14 through the hot and humid gas outlet 6.
The compressor 14 of this embodiment can compress the low-temperature steam introduced into the hot and humid air outlet 6 to high-temperature steam with a temperature above 100 ℃, and the outlet air temperature of the high-temperature heat pump 15 can also reach above 100 ℃ or even above 120 ℃.
Further, a steam interface is further arranged on the steam pipeline 12, when the equipment starts to operate, steam is firstly introduced into the steam pipeline 12 through the electromagnetic boiler, after the temperature in the equipment is normal, the interface is closed, and steam self-circulation is realized by means of the compressor.
Specifically, the working principle of the disc type drying device is as follows:
wet materials are continuously added onto the first layer of drying disk 2 on the upper part of the shell 1 from the feed inlet 7, and the main shaft 3 with the harrow bar 4 rotates under the action of the transmission device 10, so that the harrow bar 4 and the harrow blade 5 continuously turn over and shovel the materials. The material flows along the surface of the drying plate 2 along an exponential spiral line, the material on the small drying plate is transferred to the outer edge and falls to the outer edge of the large drying plate below the outer edge, the material on the large drying plate moves inwards and falls into the next layer of small drying plate from the middle blanking port, the large drying plate and the small drying plate are alternately arranged up and down, and the material can continuously flow through the whole drying equipment. Steam is introduced into the hollow drying disc 2 for heating, in the drying process, moisture escapes from the material and is discharged from a hot and humid air outlet 6 arranged at the top end of the shell 1, then the moisture enters the compressor 14, the low-temperature steam is compressed and then becomes high-temperature steam to be sent into the drying disc 2 again for utilization, the humid air in the steam pipeline 12 is recycled and heated by the high-temperature heat pump 15, then the output dry air is sent into the shell 1 through the high-temperature dry air inlet 16, and the airflow rises along a curve shown by the hot and humid airflow to 9 and is fully contacted with the material falling layer by layer. The dried material falls from the last layer of drying tray 2 to the bottom layer of the shell 1 and is finally transferred to the discharge port 11 by the rake blades 5 to be discharged, and the dried material discharged from the bottom layer can be directly conveyed to a packaging line for packaging.
Example 2
In embodiment 1, a tray type drying device with moisture recycling and combined heating is provided, wherein a compressor 14 is used for recycling moisture generated in a material drying process, the moisture is changed into hot steam to be fed back to a steam pipeline 12, and a high-temperature heat pump 15 is used for recycling the moisture in the steam pipeline 12, the moisture is changed into dry air to be fed back to a shell 1, so that various heat recycling is realized, however, embodiment 1 is only a preferred embodiment of the application and is not the only embodiment, and in embodiment 2, another manner of recycling moisture and combined heating is provided.
Referring to fig. 2, in the present embodiment, the high temperature heat pump 15 is used to connect the hot and humid air outlet 6, and output dry air after recovering and heating the hot and humid air is sent into the casing 1 of the disc drying device through the high temperature dry air inlet 16, by such a connection manner, the high temperature heat pump 15 can continuously obtain low temperature humid air from the hot and humid air outlet 6, and then raise the temperature of the low temperature humid air until the high temperature dry air is sent to the bottom of the casing 1, so as to improve the drying efficiency. The condensed water produced during the heating process is recovered through the condensed water outlet 17.
In this embodiment, the high-temperature steam in the steam pipeline 12 may be provided by an external steam source, which does not mean that the steam is not recycled, and it is fully feasible to use the compressor 14 as in embodiment 1 by using another recycling pipeline, and the details are not described here.
Preferably, two high-temperature dry air inlets 16 are formed in the bottom of the shell 1 along the diameter direction, high-temperature dry air conveyed by the high-temperature heat pump 15 enters from two openings, is collected at the position of the middle main shaft 3, and then flows upwards along the middle opening of the drying disc 2, so that the wind power is uniform, and the drying is stable.
Other features not mentioned in this embodiment can be the same as those in embodiment 1, and are not described again.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (3)

1. A disc type drying device comprises a shell (1), wherein a plurality of layers of drying discs (2) are arranged inside the shell (1), and the disc type drying device is characterized in that steam pipelines (12) are arranged on two sides of the shell (1), the inside of each drying disc (2) is hollow, each steam pipeline (12) is communicated with the inside of each drying disc (2) through a connecting pipe corresponding to each drying disc (2), steam flows in each steam pipeline (12) from left to right, enters dried materials from one end of each drying disc (2), is cooled to become condensed water, and is collected from a gas outlet at the tail end of each steam pipeline (12), and each steam pipeline (12) is provided with a steam interface for introducing steam into each steam pipeline (12) through an electromagnetic boiler; casing (1) bottom is equipped with discharge gate (11), and upper portion is equipped with feed inlet (7) and hot humid gas export (6), and, casing (1) top is conical, hot humid gas export (6) set up the top of casing (1), hot humid gas export (6) link to each other with power device through the pipeline, power device retrieves hot humid gas and provides heat in casing (1), power device is compressor (14), can retrieve the compression back with hot humid gas and send into in steam conduit (12) again by the air inlet of steam conduit (12), with the opposite side that air inlet one side of steam conduit (12) is relative has the gas outlet, the gas outlet is connected with high temperature heat pump (15), casing (1) bottom is equipped with high temperature dry air inlet (16), high temperature heat pump (15) export dry air via after retrieving the heating with the humid air in steam conduit (12) high temperature dry air inlet (16) send into The space of the shell (1) of the disc type drying device;
the high-temperature heat pump (15) continuously obtains low-temperature moisture from the position of the air outlet of the steam pipeline (12), then the low-temperature moisture is heated to high-temperature dry air and the high-temperature dry air is conveyed to the bottom of the shell (1) to improve the drying efficiency, meanwhile, the high-temperature dry air is gradually changed into low-temperature moisture in the upward drying process, moisture also escapes from the materials, mixed hot moisture is conveyed into the compressor (14) from the hot moisture outlet (6) to continuously provide low-temperature steam for the compressor (14), the compressor (14) compresses the low-temperature steam into high-temperature steam and outputs the high-temperature steam into the steam pipeline (12), and the cooled low-temperature moisture returns into the high-temperature heat pump and then continuously circulates to ensure that the drying device works all the time;
the drying disc (2) is provided with an opening in the middle and is connected with the shell (1) through a connecting pipe on the side surface, a main shaft (3) is longitudinally arranged in the shell (1), the main shaft (3) is connected with a plurality of layers of rake rods (4) and rake blades (5), and the rake rods (4) and the rake blades (5) are positioned on the upper surface of the drying disc (2); the harrow blades (5) are hinged on the harrow rod (4) and can float up and down along with the disc surface of the drying disc (2) to keep contact; the drying tray (2) is divided into a large drying tray and a small drying tray which are arranged up and down alternately; the rake blades (5) on the upper surface of the large drying tray form a first angle with the upper surface of the large drying tray, the rake blades (5) on the upper surface of the small drying tray form a second angle with the upper surface of the small drying tray, the first angle enables the material on the large drying tray to flow along an exponential spiral line towards the inner side of a blanking port, and the second angle enables the material on the small drying tray to flow along an exponential spiral line towards the outer side; the outer edge of the large drying disc is provided with a baffle plate (8), and dry air entering from a high-temperature dry air inlet (16) at the bottom of the shell (1) flows along a curved path from bottom to top under the limitation of the large drying disc, the small drying disc and the baffle plate (8).
2. A disc dryer apparatus according to claim 1, characterized in that the outlet air temperature of the compressor (14) is above 100 ℃.
3. A disc dryer apparatus according to claim 1, characterized in that the outlet air temperature of the high temperature heat pump (15) is above 100 ℃.
CN201910185264.1A 2019-03-12 2019-03-12 Disc type drying device for recycling moisture and heating in combination Active CN109945611B (en)

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CN112611193A (en) * 2021-01-25 2021-04-06 林映辉 Agricultural is with automatic drying equipment who has steady ejection of compact structure

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CN204730595U (en) * 2015-06-30 2015-10-28 象山家园纺织助剂厂 Tower disc type drying device
CN205373351U (en) * 2016-01-20 2016-07-06 辛后安 Thermal balance disc drying -machine
CN206176945U (en) * 2016-11-10 2017-05-17 河北言明化工设备有限公司 Disk continuous dryer
CN208382759U (en) * 2018-06-12 2019-01-15 大连科技学院 A kind of Novel disc-type continuous dryer

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US8464437B1 (en) * 2012-05-25 2013-06-18 Wyssmont Company Inc. Apparatus and method for the treatment of biosolids

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CN204730595U (en) * 2015-06-30 2015-10-28 象山家园纺织助剂厂 Tower disc type drying device
CN205373351U (en) * 2016-01-20 2016-07-06 辛后安 Thermal balance disc drying -machine
CN206176945U (en) * 2016-11-10 2017-05-17 河北言明化工设备有限公司 Disk continuous dryer
CN208382759U (en) * 2018-06-12 2019-01-15 大连科技学院 A kind of Novel disc-type continuous dryer

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