CN111023739A

CN111023739A - Disc type dryer

Info

Publication number: CN111023739A
Application number: CN201911292499.7A
Authority: CN
Inventors: 段抒颖
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-04-17

Abstract

The invention relates to the technical field of dryers, and discloses a disc dryer which comprises a chassis, wherein the upper surface of the chassis is fixedly provided with an outer wall, a steam isolation ring is arranged between an outer ring of a large drying disc and a steam wall, the steam isolation ring is mutually connected with the chassis and the large drying disc and inclines upwards, a steam port positioned at the lower side of the steam isolation ring is arranged on the steam wall, so that a relatively closed space can be formed between two adjacent large drying discs, a small drying disc and the previous large drying disc, steam generated in the space can only rise in the space and cannot influence the drying of materials above, the steam in the space can rise along the lower surface of the steam isolation ring to be discharged from the steam port into the steam wall and finally discharged through an air outlet at the upper part, the drying effect of the device is increased.

Description

Disc type dryer

Technical Field

The invention relates to the technical field of dryers, in particular to a disc dryer.

Background

The disc type dryer mainly comprises a large drying disc, a small drying disc and a rake, the working principle of the disc dryer is that wet materials are added into the dryer through the upper part, the wet materials fall into the large drying disc on the lower part from the periphery of the small drying disc under the rotating pushing action of the rake, and then the materials fall into the small drying disc on the lower part from the center of the large drying disc under the rotating pushing action of the rake on the large drying disc, so that the materials are dried in a circulating mode, but the existing disc dryer always has the following problems:

1. the existing large and small drying trays are internally provided with a heat source, in order to improve the heat exchange effect between the drying trays and materials, the thickness of the drying trays is usually thinner, and the thin drying trays are easy to deform under the action of long-term high temperature and the acting force of the materials and the rakes on the thin drying trays, so that the drying trays are easy to damage once the thin drying trays are deformed, meanwhile, the deformation of the drying trays can greatly reduce the action of the rakes, the rakes cannot be well lifted and scrape the materials on the drying trays, the materials are caused to remain for a long time and are adhered to the drying trays to generate paste blocks, and the drying trays are further damaged.

2. The existing disc type drying machine utilizes a drying disc to evaporate moisture in materials on the drying disc to be dry, so that water vapor is discharged from the upper part of the drying machine, but the moisture at the bottom is recombined with the materials on the drying disc in the rising process, so that the dried materials are wet again, the drying time of the drying machine is prolonged, and the efficiency of the drying machine is reduced.

3. The drying plate needs to heat and dry materials, a heat source needs to be introduced into the drying plate, but the drying plate is of a hollow structure, the heat source is introduced from one end of the drying plate and then discharged from one end of the drying plate, but the heat source introduced into the hollow drying plate slowly and randomly flows in the hollow drying plate, so that the heat source is very unevenly distributed in the hollow drying plate, the drying effect is poor, on the other hand, the whole drying plate is hollow, the space is large after the heat source is introduced into the drying plate, the flowability is poor, and the heat source on the lower surface in the drying plate is difficult to utilize due to the poor flowability, the utilization efficiency of the heat source is reduced, and the drying efficiency is also reduced.

Disclosure of Invention

The invention provides a disc type dryer which has the advantages of uniform heat source distribution, high heat source utilization rate and good drying effect and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides a disc dryer, includes the chassis, the last fixed surface on chassis installs the outer wall, the last fixed surface on chassis installs the steam wall, the upper portion fixed mounting of outer wall and steam wall has the top cap, movable mounting has the pivot between chassis and the top cap, steam wall is inside to have big drying plate and little drying plate through connecting rod interval fixed mounting, the outside fixed mounting of big drying plate has the isolated ring of steam, the steam port has been seted up on the steam wall, the inside fixed mounting of big drying plate has first water conservancy diversion ring, the inside fixed mounting of little drying plate has second water conservancy diversion ring, the inside fixed mounting of big drying plate and little drying plate has the water conservancy diversion piece, big drying plate and little drying plate lower part fixed mounting have heat source concentrated storehouse respectively, the lower part fixed mounting of big drying plate has steam separation board.

Preferably, the first guide ring and the second guide ring are both spiral, and the heights of the first guide ring and the second guide ring are respectively the same as the heights of the large drying disk and the small drying disk.

Preferably, the steam wall is installed on the inner side of the outer wall, the other end of the steam isolation ring is fixedly connected with the steam wall, and the steam port is formed below the connection point of the steam isolation ring and the steam wall.

Preferably, the guide blocks are alternately arranged left and right in a spiral groove formed by surrounding the first guide ring and the second guide ring after half a circle from the inlet of the heat source, and a space is arranged between every two adjacent guide blocks on the left side and the right side.

Preferably, the heat source concentration bin and the steam blocking plate are both of annular structures, the diameter of the steam blocking plate is smaller than that of the heat source concentration bin, and the lower surface of the steam blocking plate is located above the rake on the small drying disc at the lower part.

Preferably, the flow guide block is a triangular prism shape, the cross section of the flow guide block is a right-angled triangle, the installation direction of the flow guide block is from the right-angled edge to the two sides of the spiral groove, and the bevel edge is from the middle of the spiral groove.

The invention has the following beneficial effects:

1. the disc dryer is characterized in that a first guide ring and a second guide ring are respectively arranged in a large drying disc and a small drying disc, the first guide ring and the second guide ring are in a spiral shape, triangular prism-shaped guide blocks are arranged at intervals after a half circle in a spiral groove after the entrance of the spiral groove, so that when a heat source is introduced into an air passage of the spiral groove, the interval between the first guide ring in the first half circle and the inner wall of the large drying disc or the small drying disc is smaller, the flow rate of the heat source is higher, the heat source is accelerated through the interval, when the heat source contacts the guide blocks after the half circle, the heat source is rebounded by the inclined surface to change the direction when contacting the inclined surface of the guide blocks, on one hand, irregular movement of the internal heat source can be increased, the contact heat exchange effect of the heat source and the large drying disc or the small drying disc is improved, on the other hand, the heat source in an irregular turbulent flow state can be used for bringing the heat source close to the lower surface of the inner, increase the utilization ratio of heating source, simultaneously, set up first water conservancy diversion ring and water conservancy diversion piece in its inside and can also form one deck bearing structure between big drying dish or little drying dish upper and lower face, also greatly increase like this and increase the intensity that big drying dish or little drying dish can bear, improve life.

2. This disc dryer, through being provided with the isolated ring of steam between the outer lane of big drying tray and steam wall, and the isolated ring of steam is with chassis and big drying tray interconnect and slope ascending, set up the steam port that is located the isolated ring downside of steam simultaneously on the steam wall, can make two adjacent big drying trays and little drying tray and last big drying tray constitute a relatively inclosed space like this, make the steam that produces in this space can only rise in this space, can not influence the drying of more upper material, and steam in this space can be along the isolated lower surface of ring of steam rise from the steam port get rid of this space and get into inside the steam wall, get rid of through the gas outlet on upper portion at last, increase the drying effect of this equipment.

Drawings

FIG. 1 is a schematic cross-sectional view of the structure of the present invention;

FIG. 2 is a schematic cross-sectional view of a large drying pan of the present invention;

FIG. 3 is a schematic cross-sectional view of a small structured drying tray according to the present invention;

FIG. 4 is a schematic vertical view of a large drying tray according to the present invention;

FIG. 5 is a schematic side view of a large drying pan of the present invention;

FIG. 6 is an enlarged view of the point A in FIG. 1.

In the figure: 1. a chassis; 2. an outer wall; 3. a vapor wall; 4. a top cover; 5. a rotating shaft; 6. a large drying tray; 7. a small drying tray; 8. a steam isolation ring; 9. a steam port; 10. a first flow guide ring; 11. a flow guide block; 12. a second flow guide ring; 13. a heat source concentration bin; 14. a steam barrier plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a disc dryer includes a chassis 1, an outer wall 2 is fixedly installed on the upper surface of the chassis 1, a steam wall 3 is fixedly installed on the upper surface of the chassis 1, a top cover 4 is fixedly installed on the upper portions of the outer wall 2 and the steam wall 3, a rotating shaft 5 is movably installed between the chassis 1 and the top cover 4, a large drying disc 6 and a small drying disc 7 are fixedly installed inside the steam wall 3 at intervals through connecting rods, a steam isolating ring 8 is fixedly installed on the outer side of the large drying disc 6, a steam port 9 is formed in the steam wall 3, a first flow guide ring 10 is fixedly installed inside the large drying disc 6, a second flow guide ring 12 is fixedly installed inside the small drying disc 7, flow guide blocks 11 are fixedly installed inside the large drying disc 6 and the small drying disc 7, a heat source concentration bin 13 is fixedly installed on the lower portions of the large drying disc 6 and the small drying disc 7, and a steam blocking plate 14 is fixedly installed on the lower portion of the.

Wherein, the first flow guiding ring 10 and the second flow guiding ring 12 are both spiral, the first flow guiding ring 10 and the flow guiding block 11 are respectively arranged in the large drying disk 6 and the small drying disk 7, so that the entering heat source can be accelerated through the spiral groove in the large drying disk 6 and the small drying disk 7, the heat source flowing at high speed can be well dispersed when colliding with the flow guiding block 11 and then rebounded to the inner wall of the large drying disk 6 or the small drying disk 7, the heat source can be uniformly distributed in the large drying disk 6 and the small drying disk 7 gradually through the spiral groove in the heat source, meanwhile, the irregular flow of the heat source is increased, on the one hand, the repeated collision can increase the degree of heat exchange between the heat source and the large drying disk 6 or the small drying disk 7, the heat transfer is improved, on the other hand, the irregular flow can also bring the heat originally deposited at the bottom to exchange heat with the drying disk at the upper part, the utilization rate of a heat source is improved, and the heights of the first flow guide ring 10 and the second flow guide ring 12 are respectively the same as those of the large drying disk 6 and the small drying disk 7, so that the deformation caused by the conventional completely hollow drying disk can be changed, the bearing capacity of the drying disk at high temperature is improved, and the service life is prolonged.

Wherein, the inboard at outer wall 2 is installed to steam wall 3, the other end and the 3 fixed connection of steam wall of isolated ring 8 of steam, steam port 9 is seted up below isolated ring 8 of steam and the 3 tie points of steam wall, a comparatively airtight space has been formed between two steam walls 3 about like this, can make the steam most of this space can be kept apart, steam port 9 who sets up around this airtight space is discharged to steam wall 3 in, concentrate from the export on upper portion in steam wall 3 again and discharge, can guarantee like this that the produced steam of following material can not influence the above-mentioned dry material, avoid steam and material to carry out the secondary and combine, thereby improve dry efficiency.

The heat source is accelerated when entering the drying disk by utilizing the distance of the half circle, the heat source is enabled to collide with the flow guide blocks 11 after the half circle acceleration, the heat source turns after colliding with the flow guide blocks 11, and collides with the side walls of the large drying disk 6 and the small drying disk 7 and rebounds, and the circulation is repeated, so that the contact between the heat source and the drying disk can be increased, the heat exchange efficiency is improved, the bottom heat source in the drying disk can be brought to move, and the utilization efficiency of the heat source is improved.

The heat source concentration bin 13 and the steam blocking plate 14 are both of annular structures, the diameter of the steam blocking plate 14 is smaller than that of the heat source concentration bin 13, the lower surface of the steam blocking plate 14 is located above the rake on the small drying disc 7 at the lower part, the heat source cooled after circulation in the large drying disc 6 can be concentrated and discharged from the heat source concentration bin 13 at the middle part through the exhaust pipe, the steam blocking plate 14 can form a closed space for closing the upper and lower large drying discs 6 to the maximum extent due to the limitation of the height of the steam blocking plate 14, the phenomenon that steam in the space flows from the middle part of the large drying disc 6 to the closed space at the upper part is reduced as much as possible, and the drying effect of the dryer is further guaranteed.

Wherein, water conservancy diversion piece 11 is triangular prism shape and its cross-section is right triangle, and the installation direction of water conservancy diversion piece 11 is right angle limit to the both sides of helicla flute, and the hypotenuse to the centre of helicla flute, such design can make the heat source can be better when leading water conservancy diversion piece 11 turn to through the bounce-back of lateral wall can realize subsequent turning to in succession, increase the mixed degree of heat source wherein, improve heat transfer effect.

The working principle is that materials are fed from a feeding hole at the top of the dryer, the materials firstly fall into the upper surface of the small drying disk 7 and simultaneously enter the large drying disk 6 and the small drying disk 7 through an external heat source, the materials are slowly pushed to the outer side of the small drying disk 7 on the upper surface of the small drying disk 7 through a rake on the small drying disk 7, so that the materials fall onto the large drying disk 6 below, the materials are pushed to the center of the large drying disk 6 through the action of the rake on the large drying disk 6, so that the materials fall onto the next small drying disk 7 from the center of the large drying disk 6, the materials are dried in a circulating mode, the heat source introduced into the large drying disk 6 and the small drying disk 7 flows in a spiral groove formed between the first flow guide ring 10 and the large drying disk 6 or the small drying disk 7 and the first flow guide ring 10, when the heat source touches the flow guide block 11, the heat source changes the moving direction and collides with the flow guide block 11 back and forth, and finally discharged from the lower steam barrier 14 to complete the drying.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A disc dryer comprising a chassis (1), characterized in that: the upper surface of the chassis (1) is fixedly provided with an outer wall (2), the upper surface of the chassis (1) is fixedly provided with a steam wall (3), the upper parts of the outer wall (2) and the steam wall (3) are fixedly provided with a top cover (4), a rotating shaft (5) is movably arranged between the chassis (1) and the top cover (4), the inside of the steam wall (3) is fixedly provided with a large drying disc (6) and a small drying disc (7) through a connecting rod at intervals, the outer side of the large drying disc (6) is fixedly provided with a steam isolating ring (8), a steam port (9) is arranged on the steam wall (3), the inside of the large drying disc (6) is fixedly provided with a first flow guide ring (10), the inside of the small drying disc (7) is fixedly provided with a second flow guide ring (12), and the inside of the large drying disc (6) and the small drying disc (7) is fixedly provided with a flow guide block, the lower parts of the large drying tray (6) and the small drying tray (7) are respectively and fixedly provided with a heat source concentrated bin (13), and the lower part of the large drying tray (6) is fixedly provided with a steam baffle plate (14).

2. A disc dryer according to claim 1, wherein: the first guide ring (10) and the second guide ring (12) are spiral, and the heights of the first guide ring (10) and the second guide ring (12) are respectively the same as the heights of the large drying disk (6) and the small drying disk (7).

3. A disc dryer according to claim 1, wherein: the steam wall (3) is arranged on the inner side of the outer wall (2), the other end of the steam isolation ring (8) is fixedly connected with the steam wall (3), and the steam port (9) is formed in the position below the connection point of the steam isolation ring (8) and the steam wall (3).

4. A disc dryer according to claim 1, wherein: the flow guide blocks (11) are arranged in a left-right alternate mode in a spiral groove formed by winding the first flow guide ring (10) and the second flow guide ring (12) after a half circle from the inlet of the heat source, and intervals are arranged between every two adjacent flow guide blocks (11) on the left side and the right side.

5. A disc dryer according to claim 1, wherein: the heat source concentrated bin (13) and the steam blocking plate (14) are both of annular structures, the diameter of the steam blocking plate (14) is smaller than that of the heat source concentrated bin (13), and the lower surface of the steam blocking plate (14) is located above the upper rake of the small drying disc (7) on the lower portion.

6. A disc dryer according to claim 1, wherein: the flow guide block (11) is in a triangular prism shape, the cross section of the flow guide block is in a right-angled triangle shape, the installation direction of the flow guide block (11) is from a right-angled edge to two sides of the spiral groove, and the inclined edge is from the middle of the spiral groove.