CN111570258A - Secondary grading and cleaning equipment for waste molding sand - Google Patents

Secondary grading and cleaning equipment for waste molding sand Download PDF

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Publication number
CN111570258A
CN111570258A CN202010309068.3A CN202010309068A CN111570258A CN 111570258 A CN111570258 A CN 111570258A CN 202010309068 A CN202010309068 A CN 202010309068A CN 111570258 A CN111570258 A CN 111570258A
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CN
China
Prior art keywords
molding sand
rotating seat
cylinder
coaxially
screening
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Withdrawn
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CN202010309068.3A
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Chinese (zh)
Inventor
蓝仙松
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202010309068.3A priority Critical patent/CN111570258A/en
Publication of CN111570258A publication Critical patent/CN111570258A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18—Drum screens
    • B07B1/22—Revolving drums
    • B07B1/24—Revolving drums with fixed or moving interior agitators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/022—Cleaning travelling work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B2230/00—Specific aspects relating to the whole B07B subclass
    • B07B2230/01—Wet separation

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  • Combined Means For Separation Of Solids (AREA)

Abstract

The invention relates to the technical field of molding sand processing, in particular to secondary grading and cleaning equipment for waste molding sand, which comprises a mounting frame, a first rotating seat, a second rotating seat, a classifier, a rotary fixing frame, a spiral feeding roller, a discharging device, a reverse driver and a water seepage material bearing device, wherein the rotating seats are respectively and coaxially arranged at two ends of the mounting frame, the discharging device is coaxially and fixedly arranged at one end of the first rotating seat, the classifier comprises a first screening cylinder, a second screening cylinder and a third screening cylinder, the screening grain size grades of the first screening cylinder are from small to large, the rotary fixing frame is coaxially arranged at two ends of the integral screening cylinder, the rotary fixing frame and the spiral feeding roller are respectively arranged on the second rotating seat and the first rotating seat, the rotary fixing frame and the spiral feeding roller are connected through the reverse driver, nozzles with working ends facing the screening cylinders are also arranged at equal intervals at two sides of the first rotating seat, and the water seepage material bearing device is coaxially and obliquely arranged at, the device can grade and wash waste molding sand simultaneously, and work efficiency is high.

Description

Secondary grading and cleaning equipment for waste molding sand
Technical Field
The invention relates to the technical field of molding sand processing, in particular to secondary grading and cleaning equipment for waste molding sand.
Background
Molding sand is an important industrial raw material and has special application in casting processes. The molding sand is obtained by washing and selecting natural silica sand and removing soil impurities.
And the waste molding sand needs to be subjected to secondary grading and cleaning when being recycled, so that the requirements on products with different grain sizes are met.
Disclosure of Invention
The invention aims to provide secondary grading and cleaning equipment for waste molding sand, and the technical scheme solves the problems of secondary grading and cleaning in waste molding sand recovery.
In order to solve the technical problems, the invention provides the following technical scheme:
a secondary grading and cleaning device for waste molding sand comprises a mounting frame, a first rotating seat, a second rotating seat, a classifier, a rotary fixing frame, a spiral feeding roller, a discharging device, a reverse driver and a water seepage material bearing device, wherein the first rotating seat and the second rotating seat are coaxially arranged at two ends of the mounting frame respectively, an opening is formed in the bottom end of the mounting frame, the discharging device is coaxially and fixedly arranged at one end of the first rotating seat, the classifier comprises a first screening cylinder, a second screening cylinder and a third screening cylinder which screen grain grades from small to large, the screening cylinders are sequentially and coaxially and fixedly connected into a whole, the rotary fixing frame is coaxially arranged at two ends of the integrated screening cylinder, the rotary fixing frame and the spiral feeding roller are coaxially and rotatably arranged on the second rotating seat and the first rotating seat respectively, the rotary fixing frame and the spiral feeding roller are rotatably connected through the reverse driver, the outer surface of the spiral feeding roller is in sliding fit with the inner wall of the screening cylinder, the equidistant working end orientation that still is provided with in first rotation seat both sides the nozzle of filter screen cylinder, infiltration holding material ware sets up in the mounting bracket bottom with the axial slope.
Preferably, the first screening cylinder comprises a first fixing ring, a second fixing ring and a first straight rod, the first straight rod is arranged at one end of the first fixing ring at equal intervals along the axial direction, the second fixing ring and the first fixing ring are coaxially arranged at the other end of the first straight rod, and the minimum interval between the straight rods is larger than the minimum grain size of the molding sand and smaller than the moderate grain size of the molding sand; the second screening cylinder, the third screening cylinder and the first screening cylinder are identical in structure, and the minimum distance between the straight rods is increased step by step.
Preferably, the rotary fixing frame comprises a fixing ring, a connecting rod and a fixing barrel, the fixing ring is coaxially and fixedly arranged at two ends of the classifier, the fixing barrel is coaxially arranged inside the fixing ring through the connecting rod, the connecting rod is rotatably arranged on the second rotating seat, and two ends of the spiral feeding roller coaxially penetrate through the fixing barrel to be rotatably connected with the first rotating seat.
Preferably, the discharging device comprises a fixed cover, a discharging hopper and an inclined block, the fixed cover is coaxial to one end of the rotary fixing frame on one side, a discharging hole is formed in the top end of the fixed cover along the radial direction, a narrow opening of the discharging hopper is fixedly connected with the discharging hole, and the inclined block is fixedly arranged at the bottom end inside the fixed cover and faces the inside of the classifier.
Preferably, the reverse driver comprises a first gear, a second gear, a third rotating seat, a synchronous belt transmission mechanism, a servo single machine and a rotating shaft, the third rotating seat is fixedly arranged on the second rotating seat, the rotating shaft is rotatably arranged on the third rotating seat, the gear is respectively and fixedly connected with a rotary fixing frame on one side and a rotating shaft in a coaxial mode, the screw feeding roller and the rotating shaft are in transmission connection through the synchronous belt transmission mechanism, and an output shaft of the servo single machine is fixedly connected with the rotating shaft in a coaxial mode.
Preferably, the infiltration holds the material ware including dead lever, second straight-bar, division board and vibrating motor, the dead lever sets up in the mounting bracket bottom along the axial, and the equal interval setting of second straight-bar slope is in dead lever one side, and division board and the same axial setting of second straight-bar are in dead lever one side, vibrating motor working end and dead lever opposite side fixed connection, the interval is less than the minimum grain size of molding sand between the straight-bar.
Compared with the prior art, the invention has the beneficial effects that:
the mounting frame is used for guiding and grading the waste molding sand; starting a reverse driver, so that the rotary fixing frame and the spiral feeding roller reversely rotate on the second rotating seat and the first rotating seat respectively, waste molding sand is thrown into the discharging device, the waste molding sand is guided into the classifier through the spiral feeding roller, the screening sand grades of the first screening cylinder, the second screening cylinder and the third screening cylinder are from small to large, the outer end of the nozzle is communicated with the output end of a water pump through a hose, so that the molding sand in the screening cylinders is washed by the nozzle, and under the condition that the molding sand continuously rotates in the first screening cylinder and is conveyed by the spiral feeding roller, the molding sand with the minimum grain grade falls down and falls to the first water seepage end of the water seepage material receiver through the opening, so that the molding sand with the minimum grain grade is guided to other positions by the first water seepage water end of the seepage water receiver, and the molding sand is continuously conveyed in the screening cylinders through the spiral feeding roller, thereby make the moderate molding sand of grade and the biggest molding sand of grade be screened respectively in second sieve cylinder and third sieve cylinder to fall to infiltration receiver second and third infiltration end respectively, thereby guide by its molding sand to different grades.
The device can grade and wash waste molding sand simultaneously, and work efficiency is high.
Drawings
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a second perspective view of the present invention;
FIG. 3 is a side view of the present invention;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
FIG. 5 is a top view of the present invention;
FIG. 6 is a perspective view of the rotary mount of the present invention;
FIG. 7 is a perspective view of the water-permeable material receiver of the present invention.
The reference numbers in the figures are:
1. a mounting frame; 1a, an opening; 1b, a nozzle;
2. a first rotating base;
3. a second rotating base;
4. a classifier; 4a, a first screening drum; 4a1, a first retainer ring; 4a2, second retainer ring; 4a3, a first straight rod; 4b, a second screening cylinder; 4c, a third screening drum;
5. rotating the fixed frame; 5a, a fixing ring; 5b, a connecting rod; 5c, fixing the cylinder;
6. a helical feed roller;
7. a material discharger; 7a, a fixed cover; 7a1, a discharge hole; 7b, a discharge hopper; 7c, an oblique block;
8. a reverse driver; 8a, a first gear; 8b, a second gear; 8c, a third rotating seat; 8d, a synchronous belt transmission mechanism; 8e, serving a single machine; 8f, a rotating shaft;
9. a water seepage material bearing device; 9a, fixing rods; 9b, a second straight rod; 9c, a partition plate; 9d, a vibration motor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like 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 referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 to 7, the secondary grading and cleaning equipment for waste molding sand comprises a mounting frame 1, a first rotating seat 2, a second rotating seat 3, a classifier 4, a rotary fixing frame 5, a spiral feeding roller 6, a discharging device 7, a reverse driver 8 and a water seepage material bearing device 9, wherein the first rotating seat 2 and the second rotating seat 3 are respectively and coaxially arranged at two ends of the mounting frame 1, an opening 1a is arranged at the bottom end of the mounting frame 1, the discharging device 7 is coaxially and fixedly arranged at one end of the first rotating seat 2, the classifier 4 comprises a first screening cylinder 4a, a second screening cylinder 4b and a third screening cylinder 4c which are used for screening grain grades from small to large, the screening cylinders are sequentially and coaxially and fixedly connected into a whole, the rotary fixing frame 5 is coaxially arranged at two ends of the integral screening cylinder, the rotary fixing frame 5 and the spiral feeding roller 6 are respectively and coaxially and rotatably arranged on the second rotating seat 3 and the first rotating seat 2, rotatory mount 5 and spiral feed roll 6 rotate through reverse drive ware 8 and are connected, the outer helicoid of spiral feed roll 6 with a screening cylinder inner wall sliding fit, 2 equidistant working end orientations still are provided with in first rotation seat both sides the nozzle 1b of a screening cylinder, infiltration holds glassware 9 and sets up in mounting bracket 1 bottom with the axial slope.
The mounting frame 1 is used for guiding and grading waste molding sand; starting a reverse driver 8, so that the rotary fixing frame 5 and the screw feeding roller 6 reversely rotate on the second rotating seat 3 and the first rotating seat 2 respectively, waste molding sand is thrown into the discharger 7, the waste molding sand is guided into the classifier 4 through the screw feeding roller 6, the sand grain grades of the first screening cylinder 4a, the second screening cylinder 4b and the third screening cylinder 4c are screened from small to large, the outer end of the nozzle 1b is communicated with the output end of a water pump through a hose, so that the molding sand in the screening cylinders is washed by the nozzle 1b, in the first screening cylinder 4a, the molding sand with the minimum grain grade continuously rotates in the first screening cylinder 4a and is conveyed by the screw feeding roller 6, the molding sand falls, and falls to the first water seepage end of the water seepage material receiver 9 through the opening 1a, so that the molding sand with the minimum grain grade is guided to other positions by the first screening cylinder 4a, and through the endless with the molding sand of screw feed roller 6 the inside transport of a screen cylinder to make the moderate molding sand of grade and the biggest molding sand of grade be selected respectively in second screen cylinder 4b and third screen cylinder 4c, thereby fall to infiltration water respectively and hold glassware 9 second and third infiltration end, thereby guide the molding sand of different grades by it.
As shown in fig. 2, 3 and 4, the first sieving cylinder 4a comprises a first fixed ring 4a1, a second fixed ring 4a2 and a first straight rod 4a3, wherein the first straight rod 4a3 is arranged at one end of the first fixed ring 4a1 at equal intervals along the axial direction, the second fixed ring 4a2 and the first fixed ring 4a1 are arranged at the other end of the first straight rod 4a3 coaxially, and the minimum interval between the straight rods is larger than the minimum grain size of the molding sand and smaller than the medium grain size of the molding sand; the second screening cylinder 4b and the third screening cylinder 4c are the same as the first screening cylinder 4a in structure, and the minimum distance between the straight rods is gradually increased.
The first straight rods 4a3 are arranged at one end of the first fixing ring 4a1 at equal intervals along the axial direction, and the second fixing ring 4a2 and the first fixing ring 4a1 are coaxially arranged at the other end of the first straight rod 4a3, and the minimum interval between the straight rods is larger than the minimum grade of the molding sand and smaller than the medium grade of the molding sand; the structure of the second screening cylinder 4b and the third screening cylinder 4c is the same as that of the first screening cylinder 4a, the minimum distance between the straight rods is gradually increased, when the waste molding sand is in the screening ring consisting of the first fixing ring 4a1, the first straight rod 4a3 and the second fixing ring 4a2, the molding sand with the minimum grain size is moderately leaked out between the first straight rod 4a3, the molding sand with the minimum grain size is leaked out of the second screening cylinder 4b, and the molding sand with the maximum grain size is leaked out of the third screening cylinder 4c, so that the waste molding sand is classified.
As shown in fig. 6, the rotary fixing frame 5 includes a fixing ring 5a, a connecting rod 5b and a fixing cylinder 5c, the fixing ring 5a is coaxially and fixedly disposed at two ends of the classifier 4, the fixing cylinder 5c is coaxially disposed inside the fixing ring 5a through the connecting rod 5b, the connecting rod 5b is rotatably disposed on the second rotating base 3, and two ends of the spiral feed roller 6 coaxially penetrate through the fixing cylinder 5c to be rotatably connected with the first rotating base 2.
Rotatory mount 5 is used for driving classificator 4 to rotate, and the coaxial fixed setting of retainer plate 5a is at 4 both ends of classificator, and the coaxial setting inside retainer plate 5a through connecting rod 5b of solid fixed cylinder 5c, connecting rod 5b rotates and sets up on second rotation seat 3, the coaxial fixed cylinder 5c that passes in spiral feed roller 6 both ends rotates with first rotation seat 2 to be connected, spiral feed roller 6 passes solid fixed cylinder 5c from not influencing solid fixed cylinder 5c and rotates, thereby make solid fixed cylinder 5a drive classificator 4 rotate.
As shown in fig. 3 and 4, the discharging device 7 includes a fixed cover 7a, a discharging hopper 7b and an inclined block 7c, the fixed cover 7a is coaxial with one end of the rotary fixing frame 5 at one side, a discharging port 7a1 is radially arranged at the top end of the fixed cover 7a, the narrow opening of the discharging hopper 7b is fixedly connected with the discharging port 7a1, and the inclined block 7c is fixedly arranged at the bottom end inside the fixed cover 7a and the inclined surface faces the inside of the classifier 4.
The discharging device 7 is used for guiding and discharging waste molding sand, the fixing cover 7a is coaxially arranged at one end of the fixing frame 5 which is rotated on one side, a discharging hole 7a1 is formed in the top end of the fixing cover 7a in the radial direction, a narrow opening of the discharging hopper 7b is fixedly connected with the discharging hole 7a1, the inclined block 7c is fixedly arranged at the bottom end inside the fixing cover 7a, the inclined plane faces towards the inside of the classifier 4, the molding sand is discharged into the fixing cover 7a through the discharging hopper 7b, and the waste molding sand moves towards the inside of the classifier 4 from the inclined plane of the inclined block 7c under the action of gravity, so that the classifier 4 can conveniently perform.
As shown in fig. 5, the reverse driver 8 includes a first gear 8a, a second gear 8b, a third rotating seat 8c, a synchronous belt transmission mechanism 8d, a single servo motor 8e and a rotating shaft 8f, the third rotating seat 8c is fixedly arranged on the second rotating seat 3, the rotating shaft 8f is rotatably arranged on the third rotating seat 8c, the gears are respectively coaxially and fixedly connected with the rotating fixing frame 5 and the rotating shaft 8f on one side, the screw feeding roller 6 and the rotating shaft 8f are in transmission connection through the synchronous belt transmission mechanism 8d, and an output shaft of the single servo motor 8e is coaxially and fixedly connected with the rotating shaft 8 f.
The reverse driver 8 is used for driving the classifier 4 and the spiral feed roller 6 to rotate reversely, the third rotates the seat 8c and fixedly sets up on the second rotates the seat 3, and the pivot 8f rotates and sets up on the third rotates the seat 8c, the gear respectively with one side rotatory mount 5 and the coaxial fixed connection of pivot 8f, through synchronous belt drive mechanism 8d transmission connection between spiral feed roller 6 and the pivot 8f, servo unit 8e output shaft and the coaxial fixed connection of pivot 8f start servo unit 8e to make pivot 8f rotate coaxially on the third rotates the seat 8c, thereby through synchronous belt drive mechanism 8d with the gear drives spiral feed roller 6 and classifier 4 reverse rotation, thereby be convenient for hierarchical screening and carry the molding sand.
As shown in fig. 7, the water seepage material receiver 9 comprises a fixing rod 9a, a second straight rod 9b, a partition plate 9c and a vibrating motor 9d, wherein the fixing rod 9a is axially arranged at the bottom end of the mounting frame 1, the second straight rod 9b is obliquely and equidistantly arranged on one side of the fixing rod 9a, the partition plate 9c and the second straight rod 9b are coaxially and axially arranged on one side of the fixing rod 9a, the working end of the vibrating motor 9d is fixedly connected with the other side of the fixing rod 9a, and the distance between the straight rods is smaller than the minimum grain size of the molding sand.
Infiltration material receiver 9 is used for the molding sand draining moisture after the grading, dead lever 9a sets up in 1 bottom of mounting bracket along the axial, and the equidistant setting in dead lever 9a one side of second straight-bar 9b slope, and division board 9c sets up in dead lever 9a one side with the axial of second straight- bar 9b, and 9d work ends of vibrating motor and 9a opposite side fixed connection of dead lever, and the molding sand falls on second straight-bar 9b, under 9d vibration effect of vibrating motor, the molding sand lapse downwards, and the water that washes is followed downwards trickle between the straight-bar to be convenient for the hierarchical molding sand.
The working principle of the invention is as follows:
the mounting frame 1 is used for guiding and grading waste molding sand; starting a reverse driver 8, so that the rotary fixing frame 5 and the screw feeding roller 6 reversely rotate on the second rotating seat 3 and the first rotating seat 2 respectively, waste molding sand is thrown into the discharger 7, the waste molding sand is guided into the classifier 4 through the screw feeding roller 6, the sand grain grades of the first screening cylinder 4a, the second screening cylinder 4b and the third screening cylinder 4c are screened from small to large, the outer end of the nozzle 1b is communicated with the output end of a water pump through a hose, so that the molding sand in the screening cylinders is washed by the nozzle 1b, in the first screening cylinder 4a, the molding sand with the minimum grain grade continuously rotates in the first screening cylinder 4a and is conveyed by the screw feeding roller 6, the molding sand falls, and falls to the first water seepage end of the water seepage material receiver 9 through the opening 1a, so that the molding sand with the minimum grain grade is guided to other positions by the first screening cylinder 4a, and through the endless with the molding sand of screw feed roller 6 the inside transport of a screen cylinder to make the moderate molding sand of grade and the biggest molding sand of grade be selected respectively in second screen cylinder 4b and third screen cylinder 4c, thereby fall to infiltration water respectively and hold glassware 9 second and third infiltration end, thereby guide the molding sand of different grades by it.

Claims (6)

1. A secondary grading and cleaning device for waste molding sand is characterized by comprising a mounting frame (1), a first rotating seat (2), a second rotating seat (3), a grader (4), a rotary fixing frame (5), a spiral feeding roller (6), a discharger (7), a reverse driver (8) and a water seepage material bearing device (9), wherein the first rotating seat (2) and the second rotating seat (3) are respectively and coaxially arranged at two ends of the mounting frame (1), an opening (1 a) is formed in the bottom end of the mounting frame (1), the discharger (7) is coaxially and fixedly arranged at one end of the first rotating seat (2), the grader (4) comprises a first screening cylinder (4 a), a second screening cylinder (4 b) and a third screening cylinder (4 c) which are used for screening grain size grades from small to large, the screening cylinders are sequentially and coaxially and fixedly connected into a whole, and the rotary fixing frame (5) is coaxially arranged at two ends of the integrated screening cylinder, rotatory mount (5) and spiral feed roller (6) are coaxial rotation respectively and are set up on second rotation seat (3) and first rotation seat (2), and rotation mount (5) and spiral feed roller (6) rotate through reverse driver (8) and are connected, spiral feed roller (6) outer helicoid with screen cylinder inner wall sliding fit, first rotation seat (2) both sides are equidistant still to be provided with the work end orientation nozzle (1 b) of screen cylinder, infiltration holds glassware (9) and sets up in mounting bracket (1) bottom with the axial slope.
2. The secondary grading and cleaning equipment for waste molding sand according to claim 1, characterized in that the first screen cylinder (4 a) comprises a first fixed ring (4 a 1), a second fixed ring (4 a 2) and a first straight rod (4 a 3), the first straight rod (4 a 3) is axially and equally spaced at one end of the first fixed ring (4 a 1), the second fixed ring (4 a 2) is coaxially arranged at the other end of the first straight rod (4 a 3) with the first fixed ring (4 a 1), the minimum spacing between the straight rods is larger than the minimum grade of the medium molding sand and smaller than the minimum grade of the medium molding sand; the second screening cylinder (4 b), the third screening cylinder (4 c) and the first screening cylinder (4 a) are identical in structure, and the minimum distance between the straight rods is gradually increased.
3. The waste molding sand secondary grading cleaning equipment according to claim 1, wherein the rotary fixing frame (5) comprises a fixing ring (5 a), a connecting rod (5 b) and a fixing cylinder (5 c), the fixing ring (5 a) is coaxially and fixedly arranged at two ends of the grader (4), the fixing cylinder (5 c) is coaxially arranged inside the fixing ring (5 a) through the connecting rod (5 b), the connecting rod (5 b) is rotatably arranged on the second rotating seat (3), and two ends of the spiral feeding roller (6) coaxially penetrate through the fixing cylinder (5 c) to be rotatably connected with the first rotating seat (2).
4. The waste molding sand secondary grading cleaning device according to claim 1, characterized in that the discharging device (7) comprises a fixed cover (7 a), a discharging hopper (7 b) and an inclined block (7 c), the fixed cover (7 a) is coaxial with one end of the rotary fixing frame (5) on one side, a discharging port (7 a 1) is arranged at the top end of the fixed cover (7 a) along the radial direction, the narrow opening of the discharging hopper (7 b) is fixedly connected with the discharging port (7 a 1), and the inclined block (7 c) is fixedly arranged at the bottom end inside the fixed cover (7 a) and the inclined surface faces the inside of the grader (4).
5. The secondary grading and cleaning equipment for the waste molding sand according to claim 1, wherein the reverse driver (8) comprises a first gear (8 a), a second gear (8 b), a third rotating seat (8 c), a synchronous belt transmission mechanism (8 d), a single servo motor (8 e) and a rotating shaft (8 f), the third rotating seat (8 c) is fixedly arranged on the second rotating seat (3), the rotating shaft (8 f) is rotatably arranged on the third rotating seat (8 c), the gears are respectively and fixedly connected with a rotary fixing frame (5) and a rotating shaft (8 f) on one side, the screw feeding roller (6) and the rotating shaft (8 f) are in transmission connection through the synchronous belt transmission mechanism (8 d), and an output shaft of the single servo motor (8 e) is fixedly connected with the rotating shaft (8 f) in a coaxial manner.
6. The waste molding sand secondary grading cleaning device of claim 1, characterized in that the water seepage material receiver (9) comprises a fixing rod (9 a), a second straight rod (9 b), a partition plate (9 c) and a vibration motor (9 d), the fixing rod (9 a) is axially arranged at the bottom end of the mounting frame (1), the second straight rod (9 b) is obliquely and equidistantly arranged at one side of the fixing rod (9 a), the partition plate (9 c) and the second straight rod (9 b) are coaxially arranged at one side of the fixing rod (9 a), the working end of the vibration motor (9 d) is fixedly connected with the other side of the fixing rod (9 a), and the distance between the straight rods is smaller than the minimum grain size fraction of the molding sand.
CN202010309068.3A 2020-04-19 2020-04-19 Secondary grading and cleaning equipment for waste molding sand Withdrawn CN111570258A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010309068.3A CN111570258A (en) 2020-04-19 2020-04-19 Secondary grading and cleaning equipment for waste molding sand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010309068.3A CN111570258A (en) 2020-04-19 2020-04-19 Secondary grading and cleaning equipment for waste molding sand

Publications (1)

Publication Number Publication Date
CN111570258A true CN111570258A (en) 2020-08-25

Family

ID=72119305

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010309068.3A Withdrawn CN111570258A (en) 2020-04-19 2020-04-19 Secondary grading and cleaning equipment for waste molding sand

Country Status (1)

Country Link
CN (1) CN111570258A (en)

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