CN111854415A - Self-cleaning screen plate structure for dryer and dryer - Google Patents
Self-cleaning screen plate structure for dryer and dryer Download PDFInfo
- Publication number
- CN111854415A CN111854415A CN202010682137.5A CN202010682137A CN111854415A CN 111854415 A CN111854415 A CN 111854415A CN 202010682137 A CN202010682137 A CN 202010682137A CN 111854415 A CN111854415 A CN 111854415A
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- Prior art keywords
- screen plate
- ash removing
- side wall
- removing part
- dryer
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- 238000004140 cleaning Methods 0.000 title claims abstract description 62
- 238000009423 ventilation Methods 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims description 11
- 239000000428 dust Substances 0.000 abstract description 33
- 241001233242 Lontra Species 0.000 description 29
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/02—Applications of driving mechanisms, not covered by another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/06—Grains, e.g. cereals, wheat, rice, corn
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
The invention provides a self-cleaning screen plate structure for a dryer and the dryer, wherein a first screen plate is provided with a plurality of first vent holes and a plurality of first ash removal pieces, and the first screen plate is used for being fixed in the dryer; the second screen plate is provided with a plurality of second ventilation holes and a plurality of second ash removing pieces, the second screen plate is movably arranged in the dryer, and the second screen plate is parallel to the first screen plate; the driving piece is used for driving the second screen plate to move, in the moving process of the second screen plate, the plurality of first ash removing pieces can respectively move in the plurality of second air vents, and the plurality of second ash removing pieces can respectively move in the plurality of first air vents; according to the self-cleaning screen plate structure for the dryer, the first screen plate and the second screen plate move relatively, the first dust cleaning part cleans dust in the second vent hole, and the second dust cleaning part cleans dust in the first vent hole, so that self cleaning of the first screen plate and the second screen plate is realized; by applying the dryer with the self-cleaning screen plate structure, the screen plate can not be blocked, and manual cleaning is not needed.
Description
Technical Field
The invention belongs to the field of dryers, and particularly relates to a dryer with a self-cleaning screen plate structure for a dryer.
Background
Referring to fig. 1, for the simple and easy sketch of drying-machine among the prior art, the drying-machine includes that top-down stores up grain section and stoving section, it is used for keeping in grain to store up the grain section, the stoving section is used for drying and stores up grain section exhaust grain, the otter board has been arranged side by side in the stoving section, it passes through to store up grain section exhaust grain from between the adjacent otter board, it has hot-blast perpendicular to otter board to flow in the stoving section, dry grain through hot-blast, fig. 2 is the otter board among the prior art, set up a lot of ventilation holes on a board, ventilation hole hot-blast passes through, but grain can not pass. The screen plate has a defect that after the dryer is used for a long time, dust is accumulated on the screen plate to cause the blockage of the vent hole, the resistance of the screen plate to hot air is increased, the flow velocity of the hot air in the drying section is reduced, and the drying efficiency is reduced; because the otter board is installed inside the drying-machine, manual cleaning is very inconvenient.
Disclosure of Invention
Aiming at the problems, the invention provides a self-cleaning screen plate structure for a dryer, which comprises a first screen plate, a second screen plate and a driving piece, wherein the first screen plate is arranged on the first screen plate;
the first screen plate is provided with a plurality of first vent holes and a plurality of first ash removal pieces, and the first screen plate is used for being fixed in the dryer;
The second screen plate is provided with a plurality of second ventilation holes and a plurality of second ash removing pieces, the second screen plate is movably arranged in the dryer, and the second screen plate is parallel to the first screen plate;
the driving piece is used for driving the second screen plate to move, in the moving process of the second screen plate, the plurality of first ash removing pieces can move in the plurality of second ventilation holes respectively, and the plurality of second ash removing pieces can move in the plurality of first ventilation holes respectively.
Preferably, the first vent holes are distributed on the first screen plate in an array mode, and the first ash removing pieces are respectively positioned at the edges of the first vent holes;
the plurality of second ventilation holes are distributed on the second screen plate in an array mode, and the plurality of second ash removal pieces are respectively positioned at the edges of the plurality of second ventilation holes;
the first ash removal part is positioned in the second vent hole, and the second ash removal part is positioned in the first vent hole;
the driving piece is used for driving the second screen plate to reciprocate in the plane of the second screen plate.
Preferably, the section of the first vent hole perpendicular to the depth direction is rectangular, the section of the second vent hole perpendicular to the depth direction is rectangular, and the first vent hole and the second vent hole have the same area and shape; the inner wall of the first ventilation hole sequentially comprises a first inner side wall, a second inner side wall, a third inner side wall and a fourth inner side wall along the circumferential direction, the inner wall of the second ventilation hole sequentially comprises a fifth inner side wall, a sixth inner side wall, a seventh inner side wall and an eighth inner side wall along the circumferential direction, and the first inner side wall is parallel to the fifth inner side wall;
The first ash removing part is of a plate-shaped structure, the first ash removing part is parallel to the fifth inner side wall, and two ends of the first ash removing part are respectively abutted against the sixth inner side wall and the eighth inner side wall;
the second ash removing part is of a plate-shaped structure, the second ash removing part is parallel to the first inner side wall, and two ends of the second ash removing part are respectively abutted against the second inner side wall and the fourth inner side wall;
the second screen plate moves perpendicular to the plane where the first ash removing part is located, the second screen plate has a first limit position and a second limit position in the moving process, the second screen plate is located at the first limit position, the first ash removing part abuts against the fifth inner side wall, the second ash removing part abuts against the third inner side wall, the second screen plate is located at the second limit position, the first ash removing part abuts against the seventh inner side wall, and the second ash removing part abuts against the first inner side wall.
Preferably, the section of the first vent hole perpendicular to the depth direction is waist-shaped, the section of the second vent hole perpendicular to the depth direction is waist-shaped, and the first vent hole and the second vent hole have equal areas and same shapes;
the first ash removal part is of a columnar structure, the diameter of the first ash removal part is equal to the width of the second vent hole, and the first ash removal part is positioned at the first end of the first vent hole;
the second ash removal part is of a columnar structure, the diameter of the second ash removal part is equal to the width of the first vent hole, and the second ash removal part is positioned at the first end of the second vent hole;
The second otter board removes in parallel to first ventilation hole length direction, and the second otter board removes the in-process and has first extreme position and second extreme position, and the second otter board is under first extreme position, and first deashing spare is located second ventilation hole first end, and second deashing spare is located first ventilation hole first end, and the second otter board is under second extreme position, and first deashing spare is located second ventilation hole second end, and second deashing spare is located first ventilation hole second end.
Preferably, the plurality of first vent holes are distributed around the central circumference of the first screen plate, and the plurality of second ash removing pieces are respectively positioned at the edges of the plurality of first vent holes;
the plurality of second air vents are distributed around the center circumference of the second screen plate, and the plurality of second ash removing pieces are respectively positioned at the edges of the plurality of second air vents;
the first ash removal part is positioned in the second vent hole, and the second ash removal part is positioned in the first vent hole;
the driving piece is used for driving the second screen plate to rotate around the center of the second screen plate in a reciprocating mode.
Preferably, the first web and the second web abut.
Preferably, the first mesh plate and the second mesh plate are separated by a preset distance;
the first vent holes are distributed on the first screen plate in an array mode, and the second vent holes are distributed on the second screen plate in an array mode;
The plurality of first ash removal pieces are respectively arranged opposite to the plurality of second vent holes, and the plurality of second ash removal pieces are respectively arranged opposite to the plurality of first vent holes;
the driving piece is used for driving the second screen plate to move in the direction perpendicular to the second screen plate, the second screen plate has a first limit position and a second limit position in the moving process, the second screen plate is under the first limit position, the first ash removing pieces are respectively positioned in the second air vents and protrude out of the second air vents, the second ash removing pieces are respectively positioned in the first air vents and protrude out of the first air vents, the second screen plate is under the second limit position, the first ash removing pieces and the second air vents are spaced apart, and the second ash removing pieces and the first air vents are spaced apart.
The invention also provides a dryer, which comprises a plurality of self-cleaning screen plate structures for the dryer;
the dryer also comprises a plurality of laser emitting devices and a plurality of receiving devices, the laser emitting devices and the receiving devices are respectively positioned at two sides of the self-cleaning screen plate structure for the dryer, laser emitted by the laser emitting devices is received by the receiving devices through the first vent holes and the second vent holes, and the receiving devices are connected with the driving piece;
The receiving device controls the driving piece to be opened and closed based on the received laser intensity.
The invention also provides a dryer which comprises the self-cleaning screen plate structure for the dryer;
the drying machine further comprises an anemometer and a control system, the anemometer is located on one side, away from the air inlet of the drying machine, of the self-cleaning screen plate structure for the drying machines and is connected with the control system, and the control system is used for controlling the driving piece to be opened and closed based on a wind speed value detected by the anemometer.
According to the self-cleaning screen plate structure for the dryer, the first screen plate and the second screen plate move relatively, the first dust cleaning part cleans dust in the second vent hole, and the second dust cleaning part cleans dust in the first vent hole, so that self cleaning of the first screen plate and the second screen plate is realized; by applying the dryer with the self-cleaning screen plate structure, the screen plate can not be blocked, and manual cleaning is not needed.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 illustrates a schematic view of a dryer in the related art;
FIG. 2 shows a schematic view of a prior art mesh panel;
FIG. 3 is a schematic view of a self-cleaning mesh panel structure according to one embodiment;
FIG. 4 is a schematic view showing a first net plate in the first embodiment;
FIG. 5 is a schematic view showing the second net panel in the first extreme position in the first embodiment;
FIG. 6 is a schematic view showing a second net panel in a second extreme position in the first embodiment;
FIG. 7 is a schematic view showing another design of the self-cleaning net panel structure in the first embodiment;
FIG. 8 is a schematic view showing a structure of a self-cleaning net plate according to the second embodiment;
fig. 9 shows a schematic view of a self-cleaning mesh plate structure in the third embodiment.
In the figure, 1-a first screen plate, 11-a first vent hole, 12-a first ash removing part, 111-a first inner side wall, 113-a third inner side wall, 114-a fourth inner side wall, 2-a second screen plate, 21-a second vent hole, 22-a second ash removing part, 211-a fifth inner side wall, 213-a seventh inner side wall and 214-an eighth inner side wall.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
The implementation of the invention provides a self-cleaning screen plate structure for a dryer, which can realize self-cleaning, avoid manual cleaning of the screen plate and improve the drying efficiency of the dryer.
Example one
Referring to fig. 3, the self-cleaning screen structure for the dryer in the present embodiment includes a first screen 1, a second screen 2 and a driving member, fig. 3 is only a partial structure of the first screen 1 and the second screen 2, and the driving member is not shown. The first net sheet 1 and the second net sheet 2 have the same structure, and the first net sheet 1 will be described below.
Referring to fig. 4, a plurality of first vent holes 11 and a plurality of first ash removing members 12 are arranged on the first screen plate 1, the number of the first vent holes 11 is equal to the number of the first ash removing members 12, the plurality of first vent holes 11 are arranged in an array, the plurality of first vent holes 11 have the same structure, and here, one first vent hole 11 is taken as an example for description. The cross section of the first vent hole 11 perpendicular to the depth direction is rectangular, and the four side walls of the first vent hole 11 are respectively named a first inner side wall 111, a second inner side wall, a third inner side wall 113 (the third inner side wall 113 is not shown in fig. 4), and a fourth inner side wall 114 in this order. The structure and the arrangement mode of the plurality of first ash removing parts 12 are the same, a first ash removing part 12 is used for explanation, the first ash removing part 12 is of a plate-shaped structure, the first ash removing part 12 is fixed on one side of the first screen plate 1, the first ash removing part 12 is positioned at the edge of the first vent hole 11, specifically, one side of the first ash removing part 12 is flush with the third inner side wall, and the length of the first ash removing part 12 in the length direction of the third inner side wall is equal to the length of the third inner side wall.
The structure of the second mesh plate 2 is identical to that of the first mesh plate 1, for convenience of description, four side walls of the second ventilation holes 21 are respectively named as a fifth inner side wall 211, a sixth inner side wall, a seventh inner side wall 213 and an eighth inner side wall 214 in sequence, and one side of the second ash removal member 22 is flush with the fifth inner side wall 211.
The first net plate 1 is fixed in the dryer and kept still. The second screen plate 2 is used for being installed in the dryer in a reciprocating mode, specifically, a sliding rail is installed in the dryer, and the second screen plate 2 is installed on the sliding rail in a sliding mode. Referring to fig. 3, the first screen plate 1 and the second screen plate 2 are tightly attached after being installed, the first ash removing members 12 are respectively located in the second vent holes 21, two ends of the first ash removing members 12 are respectively abutted to the sixth inner side wall and the eighth inner side wall 214 in the second vent holes 21, the second ash removing members 22 are located in the first vent holes 11, and two ends of the second ash removing members 22 are respectively abutted to the second inner side wall and the fourth inner side wall 114 in the first vent holes 11. The reciprocating direction of the second screen plate 2 is perpendicular to the plane of the first ash removing part 12, in the reciprocating process of the second screen plate 2, the first ash removing part 12 reciprocates in the second vent hole 21 so as to clean up dust in the second vent hole 21, and the second ash removing part 22 reciprocates in the first vent hole 11 so as to clean up dust in the first vent hole 11. The second net plate 2 has a first limit position and a second limit position during the movement. As shown in FIG. 5, the second screen plate 2 is at the first limit position, the first ash removing member 12 abuts against the fifth inner sidewall 211, and the second ash removing member 22 abuts against the third inner sidewall 113. As shown in fig. 6, the second screen plate 2 is at the second limit position, the first ash removing member 12 abuts against the seventh inner side wall 213, and the second ash removing member 22 abuts against the first inner side wall 111. Therefore, the first dust removing part 12 can reach any position in the second vent hole 21, and the second dust removing part 22 can reach any position in the first vent hole 11, so that the first vent hole 11 and the second vent hole 21 can be completely cleaned.
The driving part is used for driving the second screen plate 2 to reciprocate, the driving part can be one of a hydraulic cylinder, a motor and an electric push rod, the hydraulic cylinder is taken as an example and is arranged in the dryer, a piston rod of the hydraulic cylinder is connected with the second screen plate 2, the second screen plate 2 is driven to reciprocate in the reciprocating expansion process of the piston rod, and the distance between two ends of a moving path of the piston rod is equal to the length of the second inner side wall. A hydraulic pump is also needed to be arranged, and the hydraulic pump drives a piston rod of the hydraulic cylinder to stretch.
In another design, referring to fig. 7, fig. 7 shows only one first ventilating hole 11, one second ventilating hole 21, one first ash removing member 12 and one second ash removing member 22, and the rest of the structure is not shown. The structure of the first screen plate 1 is the same as that of the second screen plate 2, the section of the first vent hole 11 perpendicular to the depth direction is designed to be waist-shaped, the first ash removing part 12 is of a columnar structure, the first ash removing part 12 is located at the first end of the first vent hole 11, and the diameter of the first ash removing part 12 is slightly smaller than or equal to the width of the second vent hole 21. The first screen plate 1 is fixed in the dryer, the second screen plate 2 is slidably mounted in the dryer, and the sliding direction of the second screen plate 2 is parallel to the length direction of the first vent hole 11. After first otter board 1 and the installation of second otter board 2, first otter board 1 and the laminating of second otter board 2 each other, second otter board 2 removes the in-process and has first extreme position and second extreme position equally, second otter board 2 is under first extreme position, first deashing spare 12 is located the first end in second ventilation hole 21, second deashing spare 22 is located the first end in first ventilation hole 11, second otter board 2 is under the second extreme position, first deashing spare 12 is located the second end in second ventilation hole 21, second deashing spare 22 is located the 11 second ends in first ventilation hole. The moving path of the first dust removing member 12 can also completely cover the second vent hole 21, and the moving path of the second dust removing member 22 can also completely cover the first vent hole 11, so that the first vent hole 11 and the second vent hole 21 can be completely cleaned.
The sectional shapes of the first ventilation hole 11 and the second ventilation hole 21 in the present embodiment are not limited to the rectangular shape and the kidney shape, and may be provided in other shapes such as a circle, a triangle, a pentagon, and the like. The shape of the first ash removing member 12 and the second ash removing member 22 is not limited to a plate-like structure, and may be a prism shape, a sphere shape, a hemisphere shape, or the like. However, in these designs, the moving path of the first dust removing member 12 may not completely cover the second ventilating hole 21, and the moving path of the second dust removing member 22 may not completely cover the first ventilating hole 11, so that the cleaning is not thorough. Bristles may be provided on the first ash removal member 12 and the second ash removal member 22 to improve the cleaning effect.
The first net plate 1 and the second net plate 2 in the embodiment are tightly attached after being installed, and can not be tightly attached in other design modes, and a gap is reserved between the first net plate 1 and the second net plate 2, but the gap is reserved, so that grains can enter the gap through the first vent hole 11 and the second vent hole 21.
Example two
The embodiment is to clean the first ventilating holes 11 and the second ventilating holes 21 by the relative movement of the first net plate 1 and the second net plate 2, and the embodiment is to clean the first ventilating holes 11 and the second ventilating holes 21 by the relative rotation of the first net plate 1 and the second net plate 2. The self-cleaning mesh plate structure in the second embodiment also comprises a first mesh plate 1, a second mesh plate 2 and a driving member, and the first mesh plate 1 and the second mesh plate 2 are identical in structure.
Referring to fig. 8, the first net sheet 1 and the second net sheet 2 in the present embodiment are designed in a circular shape, and the first net sheet 1 is described as an example. Be equipped with the first ventilation hole 11 of three circles on first otter board 1, the first ventilation hole 11 of three circles all sets up around first otter board 1 central authorities, and every circle is equipped with 10 first ventilation holes 11, and 10 first ventilation holes 11 of every circle are equidistant, and first ventilation hole 11 is the arc hole, and the length from first otter board 1 center to first ventilation hole 11 of first otter board 1 edge is crescent. Four side walls of the first ventilation hole 11 are named as a first inner side wall, a second inner side wall, a third inner side wall and a fourth inner side wall in sequence. The structure and the arrangement mode of the plurality of first ash removing parts 12 are the same, here, a first ash removing part 12 is used for explanation, the first ash removing part 12 is a plate-shaped structure, the first ash removing part 12 is fixed on one side of the first screen plate 1, the first ash removing part 12 is positioned at the edge of the first vent hole 11, specifically, one side of the first ash removing part 12 is flush with the first inner side wall, and the length of the first ash removing part 12 along the length direction of the first inner side wall 111 is equal to the length of the first inner side wall.
The structure of the second mesh plate 2 is completely the same as that of the first mesh plate 1, for convenience of subsequent description, four side walls of the second ventilation holes 21 are respectively named as a fifth inner side wall, a sixth inner side wall, a seventh inner side wall and an eighth inner side wall in sequence, and one side of the second ash removal member 22 is flush with the seventh inner side wall.
The first net plate 1 is fixed in the dryer and kept still. The second screen plate 2 is used for being installed in the dryer in a reciprocating rotation mode, the rotation center of the second screen plate 2 is the center of the second screen plate 2, and the rotation axis of the second screen plate 2 is perpendicular to the second screen plate 2. Closely laminating after first otter board 1 and the installation of second otter board 2, a plurality of first deashing pieces 12 are located a plurality of second ventilation hole 21 respectively, the both ends of first deashing piece 12 respectively with the second ventilation hole 21 in sixth inside wall and eighth inside wall support by, a plurality of second deashing pieces 22 are located a plurality of first ventilation hole 11, the both ends of second deashing piece 22 respectively with the first ventilation hole 11 in second inside wall and fourth inside wall support by. In the reciprocating rotation process of the second screen plate 2, the first dust removing member 12 reciprocates in the second ventilating hole 21 to remove dust in the second ventilating hole 21, and the second dust removing member 22 reciprocates in the first ventilating hole 11 to remove dust in the first ventilating hole 11. The second screen plate 2 has a first limit position and a second limit position in the moving process, the second screen plate 2 is under the first limit position, the first ash removing part 12 is abutted against the fifth inner side wall, the second ash removing part 22 is abutted against the third inner side wall, the second screen plate 2 is under the second limit position, the first ash removing part 12 is abutted against the seventh inner side wall, and the second ash removing part 22 is abutted against the first inner side wall. Therefore, the first dust removing part 12 can reach any position in the second vent hole 21, and the second dust removing part 22 can reach any position in the first vent hole 11, so that the first vent hole 11 and the second vent hole 21 can be completely cleaned.
The driving piece is used for driving the second screen plate 2 to rotate in a reciprocating mode, the driving piece can be a motor, the motor is installed in the drying machine, a gear is installed on an output shaft of the motor, an arc-shaped rack is installed on the edge of the second screen plate 2, and the gear is meshed with the arc-shaped rack. The motor rotates in a reciprocating way, and the arc-shaped rack is driven to move through the gear, so that the second screen plate 2 rotates in a reciprocating way.
The sectional shapes of the first ventilation hole 11 and the second ventilation hole 21 in the present embodiment are not limited to the arc shape, and may be provided in other shapes such as a circle, a triangle, a pentagon, and the like. The shape of the first ash removing member 12 and the second ash removing member 22 is not limited to a plate-like structure, and may be a prism shape, a sphere shape, a hemisphere shape, or the like. However, in these designs, the moving path of the first dust removing member 12 may not completely cover the second ventilating hole 21, and the moving path of the second dust removing member 22 may not completely cover the first ventilating hole 11, so that the cleaning is not thorough. Bristles may be provided on the first ash removal member 12 and the second ash removal member 22 to improve the cleaning effect.
The first net plate 1 and the second net plate 2 in the embodiment are tightly attached after being installed, and can not be tightly attached in other design modes, and a gap is reserved between the first net plate 1 and the second net plate 2, but the gap is reserved, so that grains can enter the gap through the first vent hole 11 and the second vent hole 21.
EXAMPLE III
In the first and second embodiments, the second mesh plate 2 moves or rotates in the plane where the second mesh plate 2 is located, so as to clean the first vent holes 11 and the second vent holes 21, in the third embodiment, the second mesh plate 2 moves in the direction perpendicular to the second mesh plate 2, so as to clean the first vent holes 11 and the second vent holes 21, and the first mesh plate 1 and the second mesh plate 2 are designed as follows.
Referring to fig. 9, a plurality of first vent holes 11 and a plurality of first ash removing members 12 are arranged on the first screen plate 1, the first vent holes 11 are circular holes, the first ash removing members 12 are cylinders, and the plurality of first ash removing members 12 are located on the same side of the first screen plate 1. The second screen plate 2 is provided with a plurality of second air holes 21 and a plurality of second ash removing pieces 22, the second air holes 21 are round holes, the second ash removing pieces 22 are cylinders, and the plurality of second ash removing pieces are positioned on the same side of the second screen plate 2.
The diameter of the first ash removing member 12 is equal to the diameter of the second vent hole 21, or the diameter of the first ash removing member 12 is slightly smaller than the diameter of the second vent hole 21, the diameter of the second ash removing member 22 is equal to the diameter of the first vent hole 11, or the diameter of the second ash removing member 22 is slightly smaller than the diameter of the first vent hole 11.
The first net plate 1 is fixed in the dryer and kept still. The second screen plate 2 is used for being installed in the dryer in a reciprocating mode, the second screen plate 2 and the first screen plate 1 are kept parallel, the plurality of first ash removing pieces 12 are respectively opposite to the plurality of second air vent holes 21, and the plurality of second ash removing pieces 22 are respectively opposite to the plurality of first air vent holes 11.
The second otter board 2 is perpendicular to the direction of second otter board 2 and moves, second otter board 2 has first extreme position and second extreme position in the removal process, second otter board 2 is under first extreme position, a plurality of first deashing pieces 12 are arranged in a plurality of second ventilation holes 21 respectively and protrusion in a plurality of second ventilation holes 21, a plurality of second deashing pieces 22 are arranged in a plurality of first ventilation holes 11 respectively and protrusion in a plurality of first ventilation holes 11, second otter board 2 is under second extreme position, first otter board 1 and 2 interval distance of second otter board, first deashing piece 12 and 21 interval distance of second ventilation holes, second deashing piece 22 and 11 interval distance of first ventilation holes. The second net plate 2 moves back and forth between the first and second limit positions to clean dust in the first and second ventilating holes 11 and 21.
The driving part is used for driving the second screen plate 2 to reciprocate, the driving part can be one of a hydraulic cylinder, a motor and an electric push rod, the hydraulic cylinder is taken as an example and is arranged in the dryer, a piston rod of the hydraulic cylinder is connected with the second screen plate 2, the second screen plate 2 is driven to reciprocate in the reciprocating expansion process of the piston rod, and the distance between two ends of a moving path of the piston rod is equal to the length of the second inner side wall. A hydraulic pump is also needed to be arranged, and the hydraulic pump drives a piston rod of the hydraulic cylinder to stretch.
The sectional shapes of the first ventilation hole 11 and the second ventilation hole 21 in the present embodiment are not limited to the circular shape, and may be provided in other shapes such as a rectangle, a triangle, a pentagon, and the like. The shape of the first ash removing member 12 and the second ash removing member 22 is not limited to the cylindrical structure, and may be prism-shaped, spherical, hemispherical, etc.
In the above three embodiments, the thicknesses of the first net plate 1 and the second net plate 2, the number, density and size of the first vent holes 11 and the second vent holes 21 are only examples in the figures, and can be set according to actual situations.
Example four
An embodiment four provides a dryer, including a plurality of self-cleaning screen structures for the dryer of the embodiment one or the embodiment two, the plurality of self-cleaning screen structures being arranged side by side in the dryer.
The dryer further comprises a plurality of laser emitting devices and a plurality of receiving devices, the laser emitting devices and the receiving devices are respectively located on two sides of the self-cleaning screen plate structure for the dryer, laser emitted by the laser emitting devices is connected with the receiving devices through the first vent holes 11 and the second vent holes 21, the receiving devices are connected with the driving piece, and the receiving devices control the driving piece to be turned on/off based on the intensity of the received laser.
In an embodiment, three laser emitting devices and three receiving devices are provided, the three laser emitting devices and the three receiving devices are respectively located at two sides of the self-cleaning screen plate structure for the dryers, and the laser emitted by the three laser emitting devices is just received by the three receiving devices through the first vent holes 11 and the second vent holes 21. If the laser intensities received by the three receiving devices are all larger than the threshold value, the laser can pass through the first vent hole 11 and the second vent hole 21, and then the dust in the first vent hole 11 and the second vent hole 21 is less or no, and the cleaning is not needed, and at the moment, the driving piece does not need to be started; if the laser intensity received by one receiving device is smaller than the threshold value, the laser does not pass through or passes through the first ventilation hole 11 and the second ventilation hole 21 less, and then dust exists in the first ventilation hole 11 and the second ventilation hole 21, and the laser needs to be cleaned.
EXAMPLE five
In a fourth embodiment, a dryer is provided, which includes a plurality of self-cleaning net plate structures for the dryers according to the first embodiment, the second embodiment or the third embodiment, and the plurality of self-cleaning net plate structures are arranged side by side in the dryer.
Because a plurality of self-cleaning screen structures have certain resistance to hot air, the wind speeds on two sides of the self-cleaning screen structures are different, under the condition that the first ventilation holes 11 and the second ventilation holes 21 have no dust, the wind speed on one side, away from the air inlet of the dryer, of the self-cleaning screen structures for a plurality of dryers is assumed to be A, and under the condition that the first ventilation holes 11 and the second ventilation holes 21 have dust, the wind speed on one side, away from the air inlet of the dryer, of the self-cleaning screen structures for a plurality of dryers is assumed to be B, A & gt B inevitably, because the dust in the first ventilation holes 11 and the second ventilation holes 21 has resistance to hot air, the wind speed of the hot air is further reduced.
Therefore, the dryer further comprises an anemometer and a control system, the anemometer is located on one side, away from the air inlet of the dryer, of the self-cleaning screen plate structure for the dryers, the anemometer is connected with the control system, and the control system is used for controlling the driving piece to be turned on/off based on the difference value.
Illustratively, the anemometer is arranged on one side of the self-cleaning screen structure far away from the air inlet of the dryer, the control system is a computer, and the anemometer is connected with the computer to send the wind speed measured by the anemometer to the computer. After testing, after hot air is introduced into a dryer which is just delivered from a factory, an anemometer obtains that the wind speed is 6m/s, a preset threshold value is 5m/s, if the wind speed measured by the anemometer is less than 5m/s in the working process of the dryer, the situation that dust is more is indicated, a control system controls a driving piece to be started, the wind speed is more than 5m/s after cleaning for a period of time, and the control system controls the driving piece to be closed; if the wind speed measured by the anemometer is more than or equal to 5m/s in the working process of the dryer, the fact that the dust is not much or not exists is indicated, and the control system controls the driving piece to be kept closed.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A self-cleaning screen plate structure for a dryer is characterized by comprising a first screen plate (1), a second screen plate (2) and a driving piece;
the first screen plate (1) is provided with a plurality of first vent holes (11) and a plurality of first ash removing pieces (12), and the first screen plate (1) is used for being fixed in the dryer;
the second screen plate (2) is provided with a plurality of second ventilation holes (21) and a plurality of second ash removing pieces (22), the second screen plate (2) is movably arranged in the dryer, and the second screen plate (2) is parallel to the first screen plate (1);
the driving piece is used for driving the second screen plate (2) to move, in the moving process of the second screen plate (2), the plurality of first ash removing pieces (12) can respectively move in the plurality of second air vents (21), and the plurality of second ash removing pieces (22) can respectively move in the plurality of first air vents (11).
2. A self-cleaning mesh plate structure for a dryer according to claim 1,
The first vent holes (11) are distributed on the first screen plate (1) in an array manner, and the first ash removing pieces (12) are respectively positioned at the edges of the first vent holes (11);
the plurality of second ventilation holes (21) are distributed on the second screen plate (2) in an array manner, and the plurality of second ash cleaning pieces (22) are respectively positioned at the edges of the plurality of second ventilation holes (21);
the first ash removing part (12) is positioned in the second vent hole (21), and the second ash removing part (22) is positioned in the first vent hole (11);
the driving piece is used for driving the second screen plate (2) to reciprocate in the plane of the second screen plate (2).
3. The self-cleaning screen structure for the dryer according to claim 2, wherein the cross section of the first ventilating hole (11) perpendicular to the depth direction is rectangular, the cross section of the second ventilating hole (21) perpendicular to the depth direction is rectangular, and the first ventilating hole (11) and the second ventilating hole (21) have the same area and the same shape; the inner wall of the first ventilation hole (11) comprises a first inner side wall (111), a second inner side wall, a third inner side wall (113) and a fourth inner side wall (114) in sequence along the circumferential direction, the inner wall of the second ventilation hole (21) comprises a fifth inner side wall (211), a sixth inner side wall, a seventh inner side wall (213) and an eighth inner side wall (214) in sequence along the circumferential direction, and the first inner side wall (111) and the fifth inner side wall (211) are parallel;
The first ash removing part (12) is of a plate-shaped structure, the first ash removing part (12) is parallel to the fifth inner side wall (211), and two ends of the first ash removing part (12) are respectively abutted against the sixth inner side wall and the eighth inner side wall (214);
the second ash removing part (22) is of a plate-shaped structure, the second ash removing part (22) is parallel to the first inner side wall (111), and two ends of the second ash removing part (22) are respectively abutted against the second inner side wall and the fourth inner side wall (114);
the second screen plate (2) moves perpendicular to the plane where the first ash removing part (12) is located, the second screen plate (2) has a first limit position and a second limit position in the moving process, the second screen plate (2) is located at the first limit position, the first ash removing part (12) abuts against the fifth inner side wall (211), the second ash removing part (22) abuts against the third inner side wall (113), the second screen plate (2) is located at the second limit position, the first ash removing part (12) abuts against the seventh inner side wall (213), and the second ash removing part (22) abuts against the first inner side wall (111).
4. The self-cleaning screen structure for the dryer according to claim 2, wherein the cross section of the first ventilating hole (11) perpendicular to the depth direction is waist-shaped, the cross section of the second ventilating hole (21) perpendicular to the depth direction is waist-shaped, the first ventilating hole (11) and the second ventilating hole (21) have the same area and the same shape;
The first ash removing part (12) is of a columnar structure, the diameter of the first ash removing part (12) is equal to the width of the second vent hole (21), and the first ash removing part (12) is positioned at the first end of the first vent hole (11);
the second ash removing part (22) is of a columnar structure, the diameter of the second ash removing part (22) is equal to the width of the first vent hole (11), and the second ash removing part (22) is positioned at the first end of the second vent hole (21);
the second screen plate (2) moves in parallel to the length direction of the first vent hole (11), the second screen plate (2) has a first limit position and a second limit position in the moving process, the second screen plate (2) is located at the first limit position, the first ash removing part (12) is located at the first end of the second vent hole (21), the second ash removing part (22) is located at the first end of the first vent hole (11), the second screen plate (2) is located at the second limit position, the first ash removing part (12) is located at the second end of the second vent hole (21), and the second ash removing part (22) is located at the second end of the first vent hole (11).
5. A self-cleaning mesh plate structure for a dryer according to claim 1,
the first vent holes (11) are distributed around the center circumference of the first screen plate (1), and the second ash removing pieces (22) are respectively positioned at the edges of the first vent holes (11);
the plurality of second vent holes (21) are distributed around the center circumference of the second screen plate (2), and the plurality of second ash cleaning pieces (22) are respectively positioned at the edges of the plurality of second vent holes (21);
The first ash removing part (12) is positioned in the second vent hole (21), and the second ash removing part (22) is positioned in the first vent hole (11);
the driving piece is used for driving the second screen plate (2) to rotate around the center of the second screen plate (2) in a reciprocating mode.
6. A self-cleaning net plate structure for dryer according to claim 2 or 5, characterized in that the first net plate (1) and the second net plate (2) are abutted.
7. A self-cleaning mesh plate structure for a dryer according to claim 1,
the first screen plate (1) and the second screen plate (2) are separated by a preset distance;
a plurality of first vent holes (11) are distributed on the first screen plate (1) in an array manner, and a plurality of second vent holes (21) are distributed on the second screen plate (2) in an array manner;
the plurality of first ash removing pieces (12) are respectively arranged opposite to the plurality of second vent holes (21), and the plurality of second ash removing pieces (22) are respectively arranged opposite to the plurality of first vent holes (11);
the driving piece is used for driving the second screen plate (2) to move in the direction perpendicular to the second screen plate (2), the second screen plate (2) has a first limit position and a second limit position in the moving process, the second screen plate (2) is arranged under the first limit position, the first ash removing pieces (12) are respectively arranged in the second vent holes (21) and protrude out of the second vent holes (21), the second ash removing pieces (22) are respectively arranged in the first vent holes (11) and protrude out of the first vent holes (11), the second screen plate (2) is arranged under the second limit position, the first ash removing pieces (12) are spaced from the second vent holes (21), and the second ash removing pieces (22) are spaced from the first vent holes (11).
8. A dryer comprising a plurality of self-cleaning net plate structures for dryers according to claim 2 or 5;
the dryer also comprises a plurality of laser emitting devices and a plurality of receiving devices, the laser emitting devices and the receiving devices are respectively positioned at two sides of the self-cleaning screen plate structure for the dryer, laser emitted by the laser emitting devices is received by the receiving devices through the first vent holes (11) and the second vent holes (21), and the receiving devices are connected with the driving piece;
the receiving device controls the driving piece to be opened and closed based on the received laser intensity.
9. A dryer comprising a plurality of self-cleaning net plate structures for dryers as claimed in claim 2, 5 or 7;
the drying machine further comprises an anemometer and a control system, the anemometer is located on one side, away from the air inlet of the drying machine, of the self-cleaning screen plate structure for the drying machines and is connected with the control system, and the control system is used for controlling the driving piece to be opened and closed based on a wind speed value detected by the anemometer.
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| CN202010682137.5A CN111854415B (en) | 2020-07-15 | 2020-07-15 | Self-cleaning screen plate structure for dryer and dryer |
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| CN202010682137.5A CN111854415B (en) | 2020-07-15 | 2020-07-15 | Self-cleaning screen plate structure for dryer and dryer |
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| CN111854415B CN111854415B (en) | 2022-04-01 |
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