CN113405336A - Roller disc type dryer - Google Patents

Abstract

The invention relates to a roller disc type dryer, which comprises a shell, wherein the top of the shell is detachably provided with a cover body, and the bottom of the shell is open; the drying disc is arranged at the opening and forms a drying chamber with the shell; a feed inlet and an exhaust hole are defined at the top of the drying chamber, and a discharge outlet is defined at the bottom of the drying chamber; the drying chamber is internally provided with a drying roller which can rotate on the top end face of the drying disc, the materials to be dried enter the drying chamber through the feed inlet, drying media are introduced into the drying disc and the drying roller, and the drying roller rolls and dries the materials to be dried which are paved on the drying disc. The invention utilizes the drying roller and the drying disk to roll the dried material, so that the dried material forms a compact material layer between the drying roller and the drying disk, the material layer is tightly contacted with the heat exchange surfaces of the drying disk and the drying roller, the heat transfer speed from the drying disk and the drying roller to the dried material is greatly improved, and the drying efficiency is improved by a plurality of times compared with the traditional dryer.

Description

Roller disc type dryer

Technical Field

The invention relates to the technical field of drying of powdery, pasty and cake-shaped materials, in particular to a roller disc type dryer.

Background

The drying process is a process of removing moisture in wet materials, and generally adopts a thermophysical method, namely, the wet materials are heated to evaporate the moisture in the wet materials, so as to achieve the aim of drying. The conventional heat transfer modes of the drying equipment comprise convection heat transfer and conduction heat transfer, wherein hot air, hot flue gas, superheated steam, hot inert gas and the like are used as drying media in the convection heat transfer, the drying media are directly contacted with wet materials, and heat is transferred to the wet materials in the convection mode. In the case of convective heat transfer, the drying medium is both a heat carrier and a moisture carrier. Conduction heat transfer utilizes conduction oil, steam, hot water and the like as drying media, the drying media are not in direct contact with wet materials, and heat is transferred to the wet materials in a heat conduction mode. When conducting heat transfer, the drying medium is only the heat carrier.

Because the latent heat of vaporization of water is very large, when the moisture content of the wet material is large, the drying process belongs to a strong heat exchange process, taking 1kg of water evaporated every second as an example, the heat exchange power is about 2300kw, so the processing capacity of the current drying equipment for the material with the large moisture content (80% moisture content) is very low.

The convection heat transfer drying equipment has the advantages of high heat exchange speed and larger single machine handling capacity than the conduction heat transfer drying equipment. The disadvantages are that a large amount of drying medium is consumed, a large amount of drying exhaust gas is generated, the heat utilization rate is lower than that of a conduction heat transfer device, and the conveying cost of the drying medium and the exhaust gas treatment cost are high. The conduction heat transfer drying equipment has the advantages that the heat carrying capacity of the drying medium is high, the consumption of the drying medium is low, and the drying medium can be recycled; the heat utilization rate is higher than that of convection heat transfer equipment; the dry off-gas is significantly less than in convective heat transfer devices. The disadvantages are slow heat exchange speed and low single machine processing capacity.

The current commonly used conduction heat transfer type drying machines are a double-cone rotary drying machine, a disc drying machine and a rake type drying machineThe traditional conduction heat transfer type drying machine mostly adopts a mode of stirring materials by a rotary rake (a disc type drying machine) or directly stirring the materials by a heat conduction element (such as a paddle drying machine) in order to improve the contact between the materials and a heat exchange surface, and the applicant finds that when the traditional drying machine works, the dried materials and the surface of the heat conduction element are in a loose contact state, or the dried materials are scattered on the surface of the heat conduction element by the self gravity, or the heat conduction element is stirred in the dried materials, and because the contact state between the dried materials and the surface of the heat conduction element is not tight enough, gaps are also formed between the dried materials, so the heat exchange coefficient is lower, and generally 100-150W/(m/(m) is 100-150W/(m) in general²(. degree. C.).

Therefore, how to provide a dryer with high drying efficiency is a problem that needs to be solved by those skilled in the art.

Disclosure of Invention

Therefore, the invention aims to provide a roller disc type dryer, which solves the problem of low drying efficiency of drying equipment in the prior art.

The present invention provides a roller-disc type dryer, including:

the top of the shell is detachably provided with a cover body, and the bottom of the shell is open;

the drying disc is arranged at the opening and forms a drying chamber with the shell; the top of the drying chamber defines a feeding hole and an exhaust hole, and the bottom of the drying chamber defines a discharging hole;

and the drying roller is arranged in the drying chamber and can rotate at the top end face of the drying disc, the drying roller is used for drying materials to enter the drying chamber through the feed inlet, the drying disc and a drying medium are introduced into the drying roller, and the drying roller rolls and dries and paves the materials to be dried on the drying disc.

According to the technical scheme, compared with the prior art, the roller disc type dryer disclosed by the invention has the advantages that the dried material is rolled by the drying roller and the drying disc, so that a compact material layer is formed between the drying roller and the drying disc, the material layer is tightly contacted with the heat exchange surfaces of the drying disc and the drying roller, and the heat transfer speed from the drying disc and the drying roller to the dried material is greatly increased. Because the drying roller and the drying tray roll the materials, the dried materials are rolled into a compact material layer, the heat exchange efficiency of the material layer, the drying roller and the drying tray is improved, and the transfer speed of heat in the material layer is also improved. The uncrushed material layer is loose, and a large number of gaps are formed inside the material layer, so that the heat transfer in the material layer is hindered. Therefore, the heat transfer speed in the dried material is greatly improved, and the drying efficiency is improved by multiple times compared with that of the traditional dryer.

Further, the drying roller is in power connection with a roller frame transmission part through a roller frame, and the roller frame transmission part drives the roller frame and the drying roller to rotate around the center of the drying chamber.

Further, the roller frame comprises a feeding disc, a roller bracket and a lower scraper; the material receiving disc is arranged at the bottom of the feeding disc, the connecting frame is connected to the top of the material receiving disc, a roller frame hollow shaft is formed in the middle of the connecting frame, an upper distributing device is arranged in the material receiving disc, the top of the upper distributing device penetrates out of the roller frame hollow shaft and is in power connection with a distributing device transmission part, and the feeding hole is formed in a hollow distributing shaft in the middle of the upper distributing device; the material to be dried falls into the middle part of the receiving tray through the feeding hole, and is distributed by the upper distributing device and falls into the top edge of the drying tray through a discharging hole in the side wall of the receiving tray; multiseriate roller support and multiseriate the lower part is scraped the glassware isogonism and is arranged in the take-up pan bottom, each is listed as roller support bottom rotates and is connected with the drying roller, the lower part scrape the glassware with upper portion distributing device cloth opposite direction, it will the drying dish top edge treat that the dry material is scraped to the centre by the edge.

Furthermore, each row of the lower material scrapers comprises a plurality of connecting rods and a plurality of lower scraping plates, the top of each connecting rod is fixed with the bottom of the material receiving disc, and the bottom of each connecting rod is fixed with one lower scraping plate.

Further, the upper distributor comprises: the circular connecting grating plate and the upper scraper plate; the middle part of the circular connecting grid plate is provided with the hollow material distribution shaft, the bottom of the grid plate is provided with a plurality of groups of the upper scraping plates along the radial direction, and the installation angles of the upper scraping plates and the lower scraping plates are complementary.

Further, the tangential included angle A of the lower scraper tangent to the radius line of the reference circle is 135-160 degrees.

Further, the roller frame transmission part and the distributing device transmission part have the same structure and respectively comprise a transmission motor, a motor belt pulley, a transmission belt pulley and a belt; the transmission motor is vertically supported at the top of the cover body through a base, the output end of the transmission motor faces downwards and is connected with the motor belt pulley, the motor belt pulley is connected with the transmission belt pulley through the belt, the transmission belt pulley is installed on the outer wall of the hollow shaft of the roller frame or the hollow cloth shaft, the hollow shaft of the roller frame rotates in the middle of the cover body through one rotary bearing, and the hollow cloth shaft rotates in the hollow shaft of the roller frame through the other rotary bearing.

Furthermore, the drying roller comprises an inner ring drying roller and an outer ring drying roller which are respectively rotatably supported on the roller support, the inner ring drying roller and the outer ring drying roller both adopt cone frustum-shaped roller bodies which are obliquely arranged, the roller bodies are in rolling contact with the drying disc, and the volume of the inner ring drying roller is smaller than that of the outer ring drying roller.

Further, the drying tray includes: the device comprises an upper plate, a lower plate, an inner vertical cylinder, an outer vertical cylinder and a reinforcing column; the upper plate and the lower plate are buckled to form a tray body drying chamber, a plurality of reinforcing columns are arranged between the drying chambers, the inner vertical cylinder penetrates through the middle of the tray body drying chamber to form the discharge port, a tray body drying medium inlet is formed in the circumference of the tray body drying chamber, the outer vertical cylinder is communicated with the inside of the tray body drying chamber and extends downwards out of the tray body drying chamber to form a drying medium outlet of the tray body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a roller-disc dryer according to the present invention;

FIG. 2 is a perspective view of the roller housing;

FIG. 3 the accompanying drawings show a cross-sectional view of the roller housing;

FIG. 4 is a bottom plan view of the drawing;

FIG. 5 shows a schematic of the mechanism of the upper distributor;

figure 6 the accompanying drawings show a schematic view of the upper distributor in the roller frame;

FIG. 7 is a schematic view of the lower flight layout angle;

FIG. 8 is a schematic structural view of a roller frame transmission part;

FIG. 9 is a schematic view of the structure of the drying roller;

FIG. 10 is a schematic view of the structure of the drying tray;

FIG. 11 is a schematic diagram illustrating a drying principle of a conventional drying apparatus;

FIG. 12 the drawing shows a schematic view of the drying principle of the present invention;

in the figure: 100-shell, 101-cover, 102-feed inlet, 103-exhaust hole, 104-discharge hole, 200-drying tray, 201-upper plate, 202-lower plate, 203-inner vertical cylinder, 204-outer vertical cylinder, 205-reinforcing column, 206-tray body drying medium inlet, 300-drying roller, 301-roller body heat exchange space, 302-first end panel, 303-second end panel, 304-roller surface body, 305-water pump, 306-connecting shaft, 307-bearing, 400-roller frame, 401-roller frame transmission part, 4011-transmission motor, 4012-motor pulley, 4013-transmission pulley, 4014-belt, 4015-rotary bearing, 402-feed disc, 4021-discharge hole, 403-roller support and 404-lower scraper, 405-roller frame hollow shaft, 406-upper distributor, 4061-distributor transmission part, 4062-hollow distributor shaft, 4063-circular connecting grid plate, 4064-upper scraper, G-drying chamber, W-material, J-liquid water.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 11, the drying medium is saturated steam, the heat conducting element is a carbon steel plate (drying disk), and the material to be dried is municipal sludge. The heat is transferred to the carbon steel plate during steam liquefaction, and then is transferred to wet sludge in contact with the carbon steel plate through the carbon steel plate, the wet sludge is dried on the surface of the carbon steel plate to form a dry sludge thin layer, and the heat passes through the dry sludge layer to continue to transfer the wet sludge for drying. The carbon steel plate is a good thermal conductor, the thermal conductivity is 40W/(m DEG C), the thermal conductivity of the dry sludge (see the loose inorganic materials of 0.29 boiler slag, 0.23 fly ash and 0.26 blast furnace slag in appendix B of civil construction thermal design specification GB 50176-2016) is about 0.23-0.29W/(m DEG C), and the loose dry sludge has poor thermal conductivity.

Through experimental research, referring to fig. 12, the applicant utilizes the drying roller and the drying tray to roll the dried material, so that the dried material forms a compact material layer between the drying roller and the drying tray, the material layer is in close contact with the heat exchange surfaces of the drying tray and the drying roller, and the heat transfer speed from the drying tray and the drying roller to the dried material is greatly increased. Because the material to be dried is rolled into a compact material layer, the heat transfer speed inside the material to be dried is also greatly improved, so that the drying efficiency is improved by multiple times compared with that of the traditional dryer.

Roller-tray dryer referring to fig. 1, the drying roller and the drying tray are both heat conducting elements, and the dried material is flatly laid on the drying tray and rolled into a compact material layer by the drying roller. Specifically, the embodiment of the invention discloses a roller disc type dryer, which comprises: the device comprises a shell 100, wherein the top of the shell 100 is detachably provided with a cover body 101, and the bottom of the shell 100 is open; a drying tray 200, the drying tray 200 being disposed at the opening and forming a drying chamber G with the housing 100; the top of the drying chamber G defines a feed inlet 102 and a vent hole 103, and the bottom of the drying chamber G defines a discharge outlet 104; and a drying roller 300, the drying roller 300 which can rotate on the top end surface of the drying disc 200 is arranged in the drying chamber G, the material W to be dried enters the drying chamber G through the feed inlet 102, a drying medium is introduced into the drying disc 200 and the drying roller 300, and the drying roller 300 rolls and dries the material W to be dried which is flatly paved on the drying disc 200.

Advantageously, the drying roller 300 is in power connection with a roller frame transmission part 401 through the roller frame 400, and the roller frame transmission part 401 drives the roller frame 400 and the drying roller 300 to rotate around the center of the drying chamber G.

Referring to fig. 2-4, the roller frame 400 includes a feed disc 402, a roller support 403, and a lower scraper 404; the bottom of the feeding disc 402 is provided with a receiving disc, the top of the receiving disc is connected with a connecting frame, the middle part of the connecting frame is provided with a roller frame hollow shaft 405, an upper distributing device 406 is arranged in the receiving disc, the top of the upper distributing device 406 penetrates out of the roller frame hollow shaft 405 and is in power connection with a distributing device transmission part 4061, and the feeding hole 102 is arranged in a hollow distributing shaft 4062 in the middle part of the upper distributing device 406; the material W to be dried falls into the middle of the receiving tray through the feeding hole 102, is distributed by the upper distributing device 406 and falls into the top edge of the drying tray 200 through the feeding hole 4021 on the side wall of the receiving tray; the multiple rows of roller supports 403 and the multiple rows of lower scrapers 404 are arranged at the bottom of the receiving tray in an equal-angle cross manner, the bottom of each row of roller supports 403 is rotatably connected with a drying roller 300, and the lower scrapers 404 are opposite to the distribution direction of the upper distributor 406 and scrape the material W to be dried at the top edge of the drying tray 200 from the edge to the middle.

Referring to fig. 4, each row of the lower scrapers 404 comprises a plurality of connecting rods and a plurality of lower scrapers, wherein the top of each connecting rod is fixed to the bottom of the receiving tray, and the bottom of each connecting rod is fixed to one lower scraper.

Referring to fig. 5 and 6, the upper distributor 406 includes: a circular connecting grid plate 4063 and an upper scraper 4064; the middle part of circular connection grid plate 4063 is cavity cloth axle 4062, and grid plate bottom has arranged the multiunit upper portion scraper blade 4064 along radial, and upper portion scraper blade 4064 and lower scraper blade installation angle are complementary, and these two scraper blade's effect one is outside propelling movement material, and one is inside propelling movement material, and the direction of propelling movement material is opposite.

When the upper scraping plates are in contact with the materials to be dried, the materials are pushed out to the outer side of the circumference, the upper scraping plates distributed on different diameters are combined together, the materials to be dried are gradually pushed out to the outer ring from the inner ring of the material receiving disc, and finally the materials are discharged from the discharging port and fall on the outer edge of the top of the drying disc. Lower scraper blade still is equipped with below the roll rack, because upper portion scraper blade and lower scraper blade installation direction are just in time opposite, lower scraper blade is responsible for the material on the drying tray by the inside propelling movement of outer lane, when being laid evenly on the drying tray by lower scraper blade by the drying material, the material is in comparatively loose state, the material is not inseparable with the drying tray contact, area of contact is less, the drying tray is very poor to the heat transfer effect of material, and there are more gaps inside the material, seriously influence the inside heat transfer of material, the state this moment is equivalent to the disc drier. The drying roller rotates around the center of the drying machine along with the roller frame to roll materials on the drying disc, and the drying roller rotates around the axis of the drying roller due to the friction effect of the rolled materials. At the moment, the loose materials on the drying tray are pressed into a compact material layer, and the drying tray and the drying roller simultaneously transfer heat to the material layer from the upper surface and the lower surface of the material layer, so that the heat transfer effect is greatly improved.

After the materials are rolled and dried by the drying rollers, the materials are scraped from the drying disc by the lower scraper, the lower scraper rotates synchronously with the roller frame, the upper scraper rotates synchronously with the upper distributor and pushes the materials to the inner side of the drying disc, the materials are loosened again in the process, the inner layer and the outer layer of the materials are mixed to ensure that the materials are fully subjected to heat exchange, then the materials are rolled and dried by the next drying roller, after multiple cycles, the materials reach the drying requirement, and the materials are discharged from a discharge port in the center of the drying disc. In order to ensure that the material distributing scraper blade can push the material smoothly, referring to fig. 7, the tangential included angle a between the lower scraper blade and the radius line of the reference circle where the lower scraper blade is tangent is 135-160 °. When contained angle A is 90, the scraper blade can neither outwards propelling movement material, also can inwards propelling movement material, when contained angle A is greater than 90, outwards propelling movement material, when being less than 90, inwards propelling movement material. The angle determines the speed of pushing the materials, and experiments determine that the pushing speed is high when the included angle A is 135-160 degrees.

Referring to fig. 8, the roller frame transmission part 401 and the distributing device transmission part 4061 have the same structure, and both include a transmission motor 4011, a motor pulley 4012, a transmission pulley 4013 and a belt 4014; transmission motor 4011 passes through the vertical support of base in lid 101 top, its output end down, and be connected with motor pulley 4012, motor pulley 4012 passes through belt 4014 and is connected with drive pulley 4013, drive pulley 4013 installs on roller frame hollow shaft 405 or hollow cloth axle 4062 outer wall, roller frame hollow shaft 405 rotates in lid 101 middle part through a slewing bearing 4015, hollow cloth axle 4062 rotates inside roller frame hollow shaft 405 through another slewing bearing 4015.

Referring to fig. 8 and 9, the drying roller 300 includes an inner ring drying roller and an outer ring drying roller, which are rotatably supported on the roller support 403, the inner ring drying roller and the outer ring drying roller both adopt cone frustum-shaped roller bodies arranged obliquely, and the roller bodies are in rolling contact with the drying tray 200, and the volume of the inner ring drying roller is smaller than that of the outer ring drying roller.

The drying roller is divided into an inner ring and an outer ring, so that the thickness deviation of the materials can be better adapted, and the materials with different thicknesses can be effectively rolled. If one drying roller is used, the large end of the drying roller is large, so that the volume of the whole equipment is increased; the thickness of the material on the drying tray is not uniform, and the rolling effect is not good.

Referring to fig. 9, in an embodiment of the present invention, a drying roller 300 includes: the roller comprises a roller body, wherein a roller body heat exchange space 301 is formed inside the roller body, two ends of the roller body are respectively provided with a shaft fixing hole, and a bearing 307 is arranged at each group of shaft fixing holes; the connecting shaft 306 is rotationally connected with a bearing 307; the connecting shaft 306 is a hollow shaft; the connecting shaft 306 is fixed on the roller bracket 403, a circulation channel of the drying medium is arranged in the roller bracket 403, the circulation channel is communicated with the connecting shaft 306 and the heat exchange space 301, and the circulation channel is provided with a roller body drying medium inlet 4031 and a roller body drying medium outlet 4032. The roller body is in a cone frustum shape, and the contact working surface of the roller body is flush with the horizontal plane.

Advantageously, the roll body comprises a first end plate 302, a second end plate 303 and a roll body 304 welded together. The roll surface body 304 is made of steel and has good heat transfer performance and rolling hardness.

The roll surface body 14 is cast or formed by roll welding of sheet material.

Near the side of the roller drying medium outlet 4032, the inner side of the connecting shaft 306 is provided with a water pumping pipe 305 with a downward opening, and the water pumping pipe 305 is connected with an external water pumping device. And liquid water J generated in the drying process is discharged through the water pumping pipe and the drying medium outlet of the roller body. The water pumping pipe is fixed on the hollow connecting shaft and does not rotate along with the roller body, the water pumping port is always positioned below the hollow connecting shaft, and the water pumping pipe is close to the inner surface of the conical roller as much as possible on the premise of ensuring that the water pumping pipe does not interfere with the inner surface of the conical roller, so that the liquid water J in the drying roller can be pumped more thoroughly.

Referring to fig. 10, the drying tray 200 includes: an upper plate 201, a lower plate 202, an inner vertical cylinder 203, an outer vertical cylinder 204 and a reinforcing column 205; the upper plate 201 and the lower plate 202 are buckled to form a tray body drying chamber, a plurality of reinforcing columns 205 are arranged between the drying chambers, the inner vertical cylinder 203 penetrates through the middle of the tray body drying chamber to form a discharge hole 104, a tray body drying medium inlet 206 is formed in the circumference of the tray body drying chamber, the outer vertical cylinder 204 is communicated with the inside of the tray body drying chamber and extends downwards out of the tray body drying chamber to form a drying medium outlet of the tray body. Saturated vapor (drying medium) enters the inside of the drying tray from the drying medium inlet of the tray body, and when the temperature of the saturated vapor is lower than the inner wall of the drying tray, the saturated vapor is condensed into liquid water and releases heat energy at the same time, the heat energy is transferred to the material to be dried through the upper plate, and the liquid water is discharged from the drying medium outlet of the tray body.

The invention utilizes the drying roller and the drying disk to roll the dried material, so that the dried material forms a compact material layer between the drying roller and the drying disk, the material layer is tightly contacted with the heat exchange surfaces of the drying disk and the drying roller, and the heat transfer speed of the drying disk and the drying roller to the dried material is greatly improved. Because the drying roller and the drying tray roll the materials, the dried materials are rolled into a compact material layer, the heat exchange efficiency of the material layer, the drying roller and the drying tray is improved, and the transfer speed of heat in the material layer is also improved. The uncrushed material layer is loose, and a large number of gaps are formed inside the material layer, so that the heat transfer in the material layer is hindered.

The invention improves the contact state of the material to be dried and the surface of the heat exchange element by using a rolling mode, simultaneously improves the internal state of the material to be dried, and greatly improves the heat exchange efficiency, so that the drying efficiency is improved by multiple times compared with the traditional conduction heat transfer type dryer.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (9)

1. A roller-pan dryer, comprising:

the top of the shell (100) is detachably provided with a cover body (101), and the bottom of the shell (100) is open;

a drying tray (200), the drying tray (200) being disposed at the opening and forming a drying chamber (G) with the housing (100); the top of the drying chamber (G) defines a feed inlet (102) and a vent hole (103), and the bottom of the drying chamber (G) defines a discharge outlet (104);

and the drying roller (300), the drying roller (300) which can rotate on the top end face of the drying disc (200) is arranged in the drying chamber (G), a material (W) to be dried enters the drying chamber (G) through the feed port (102), a drying medium is introduced into the drying disc (200) and the drying roller (300), and the drying roller (300) rolls and dries the material (W) to be dried which is flatly paved on the drying disc (200).

2. A roller disc dryer according to claim 1, characterized in that the drying roller (300) is power connected with a roller frame transmission part (401) through a roller frame (400), and the roller frame transmission part (401) drives the roller frame (400) and the drying roller (300) to rotate around the center of the drying chamber (G).

3. A roller tray dryer according to claim 2, characterized in that the roller frame (400) comprises a feed disc (402), a roller holder (403) and a lower scraper (404); the feeding device is characterized in that a receiving disc is arranged at the bottom of the feeding disc (402), the top of the receiving disc is connected with a connecting frame, a roller frame hollow shaft (405) is formed in the middle of the connecting frame, an upper distributing device (406) is arranged in the receiving disc, the top of the upper distributing device (406) penetrates out of the roller frame hollow shaft (405) and is in power connection with a distributing device transmission part (4061), and the feeding hole (102) is formed in a hollow distributing shaft (4062) in the middle of the upper distributing device (406); the material (W) to be dried falls into the middle of the receiving tray through the feeding hole (102), and is distributed by the upper distributing device (406) and falls into the top edge of the drying tray (200) through the feeding hole (4021) on the side wall of the receiving tray; multiseriate roller support (403) and multiseriate glassware (404) equidistance cross arrangement is scraped to the lower part in the take-up pan bottom, each is listed as roller support (403) bottom rotates to be connected with drying roller (300), lower part scrape glassware (404) with upper portion distributing device (406) cloth opposite direction, it will drying dish (200) top edge treat that dry material (W) is scraped to the centre by the edge.

4. A roller-disc dryer according to claim 3, characterized in that each row of said lower scrapers (404) comprises a plurality of connecting rods and a plurality of lower scrapers, each of said connecting rods being fixed at the top to the bottom of the receiver, and at the bottom to one of said lower scrapers.

5. A roller tray dryer according to claim 4, characterized in that said upper distributor (406) comprises: a circular connecting grid plate (4063) and an upper scraper (4064); the middle part of the circular connecting grid plate (4063) is the hollow distributing shaft (4062), the bottom of the grid plate is radially provided with a plurality of groups of the upper scrapers (4064), and the installation angles of the upper scrapers (4064) and the lower scrapers are complementary.

6. A roller-disc dryer according to claim 5, characterized in that the angle A of tangency of the lower scraper with the radius of the reference circle is 135 ° -160 °.

7. The roller disc type dryer as claimed in claim 3, wherein the roller frame transmission part (401) and the distributor transmission part (4061) are of the same structure and comprise a transmission motor (4011), a motor pulley (4012), a transmission pulley (4013) and a belt (4014); drive motor (4011) through the vertical support of base in lid (101) top, its output down, and be connected with motor pulley (4012), motor pulley (4012) pass through belt (4014) with drive pulley (4013) are connected, drive pulley (4013) install in on roller frame quill shaft (405) or hollow cloth axle (4062) outer wall, roller frame quill shaft (405) rotate through a slew bearing (4015) in lid (101) middle part, hollow cloth axle (4062) rotate through another slew bearing (4015) in inside roller frame quill shaft (405).

8. A roller-disc dryer according to claim 3, characterized in that the drying roller (300) comprises an inner ring drying roller and an outer ring drying roller, which are respectively rotatably supported on the roller support (403), the inner ring drying roller and the outer ring drying roller both adopt obliquely arranged truncated cone-shaped roller bodies, and the roller bodies are in rolling contact with the drying disc (200), and the volume of the inner ring drying roller is smaller than that of the outer ring drying roller.

9. A roller-tray dryer according to claim 3, characterized in that said drying tray (200) comprises: an upper plate (201), a lower plate (202), an inner vertical cylinder (203), an outer vertical cylinder (204) and a reinforcing column (205); the upper plate (201) and the lower plate (202) are buckled to form a tray body drying chamber, a plurality of reinforcing columns (205) are arranged between the drying chambers, the inner vertical cylinder (203) penetrates through the middle part of the tray body drying chamber to form the discharge hole (104), a tray body drying medium inlet (206) is arranged on the circumference of the tray body drying chamber, and the outer vertical cylinder (204) is communicated with the inside of the tray body drying chamber and extends downwards out of the tray body drying chamber to form a drying medium outlet of the tray body.

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