CN112139445A - Pendulum impact type casting sand drying and grading device - Google Patents
Pendulum impact type casting sand drying and grading device Download PDFInfo
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- CN112139445A CN112139445A CN202011014526.7A CN202011014526A CN112139445A CN 112139445 A CN112139445 A CN 112139445A CN 202011014526 A CN202011014526 A CN 202011014526A CN 112139445 A CN112139445 A CN 112139445A
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- sieve tray
- sieve
- grading
- tray
- pendulum rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/06—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sieving or magnetic separating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
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Abstract
The invention discloses a pendulum impact type casting sand drying and grading device which comprises a grading box body, wherein the grading box body is fixedly connected with a first sieve tray, a second sieve tray and a third sieve tray through springs; the grading hopper is provided with a feed hopper, an air outlet chimney, a fourth discharge pipe and an air inlet pipe, and the air inlet pipe is connected with an air pump and an air heater; the grading box body is connected with a first pendulum rod, a second pendulum rod and a third pendulum rod through hinge rods, and is connected with three groups of cam blocks through rotating shafts. According to the invention, springs and spherical hammers are arranged on two sides of three groups of sieve trays, the spherical hammers move in a pendulum motion through a cam structure to generate pendulum impact type vibration, and casting sand or impurities with four particle sizes are obtained through three-stage separation to complete classification treatment; the invention also has a steamer tray type drying structure, and the drying efficiency is high.
Description
Technical Field
The invention relates to the technical field of casting sand recovery processing, in particular to a pendulum impact type casting sand drying and grading device.
Background
Casting sand that uses after the sand casting often needs recovery processing, and the recovery processing of casting sand generally includes edulcoration, drying and hierarchical process, involves a series of equipment such as edulcoration equipment, drying oven and separating screen, and the cost is higher, the treatment effeciency is lower, awaits the improvement urgently.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a pendulum impact type casting sand drying and grading device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a pendulum impact type cast sand drying and grading device comprises a grading box body, wherein a first sieve tray, a second sieve tray and a third sieve tray are fixedly connected to one inner side wall of the grading box body sequentially through springs from top to bottom, grading hoppers are fixedly connected to the other two symmetrical inner walls of the grading box body, drawer frames which are respectively in sliding fit with the first sieve tray, the second sieve tray and the third sieve tray are arranged on the two symmetrical inner walls of the grading hoppers, each drawer frame consists of two symmetrical strip-shaped frames, the opposite side surfaces of the two symmetrical strip-shaped frames are provided with strip-shaped grooves, the two side frames of the first sieve tray, the second sieve tray and the third sieve tray are respectively in sliding fit with the corresponding strip-shaped grooves, the middle parts of the first sieve tray, the second sieve tray and the third sieve tray bottom plate are in sieve hole shapes, the sieve holes of the first sieve tray are larger than the sieve holes of the second sieve tray, the sieve holes of the third sieve tray are larger than the sieve holes of the first sieve tray, the material blocking edges are arranged around the first sieve tray, the first sieve tray, the second sieve tray and the third sieve tray are respectively provided with a discharge port at the middle part of the material blocking edge in sliding fit with the drawer frame, the middle part of a strip-shaped frame at one side of each drawer frame is provided with a notch communicated with the discharge port, the discharge port of the first sieve tray is communicated with a first discharge pipe, the discharge port of the second sieve tray is communicated with a second discharge pipe, the discharge ports of the three sieve trays are communicated with a third discharge pipe, the first discharge pipe, the second discharge pipe and the third discharge pipe respectively extend out of the grading box body and are connected with a collecting bag, the first discharge pipe, the second discharge pipe and the third discharge pipe are all arranged at the central line position of one side wall of the grading hopper and move along with the first sieve tray, the second sieve tray and the third sieve tray in a reciprocating manner, and the discharge ports of the first sieve tray, the second sieve tray and the third sieve tray are always communicated with the first discharge pipe, the second;
the top surface of the grading hopper is communicated with a feed hopper and an air outlet chimney, the tops of the feed hopper and the air outlet chimney respectively extend out of the top surface of the grading box body, the bottom wall of the grading hopper is arranged in a slope, a fourth discharge pipe is arranged at the bottom of the slope of the bottom wall of the grading hopper, a bottom outlet of the fourth discharge pipe always extends out of the side wall of the grading hopper and the side wall of the grading box body, an air inlet pipe is arranged between the bottom wall of the grading hopper and the second sieve tray, one end of the air inlet pipe is connected with an air pump, the air pump is communicated;
the bottom surface of the top wall of the grading box body is connected with a first pendulum rod through a hinge rod, a second pendulum rod and a third pendulum rod, the first pendulum rod, the bottom ends of the second pendulum rod and the third pendulum rod are respectively provided with a spherical hammer, the first pendulum rod, the spherical hammers of the second pendulum rod and the third pendulum rod are respectively contacted with a first sieve tray, the edges of the second sieve tray and the third sieve tray are contacted, two inner side walls of the grading box body are symmetrical, a rotating shaft is also erected on the two inner side walls of the grading box body and is parallel to the hinge rod, three groups of cam blocks are fixedly sleeved in the middle of the rotating shaft, the outer cambered surfaces of the three groups of cam blocks are sequentially contacted with the first pendulum rod, the middle parts of the second pendulum rod and the third pendulum rod, the sizes of the three groups of cam blocks are the same but different from included angles of the rotating shaft, so that the first sieve tray, the second sieve tray and the third sieve tray.
Preferably, the first discharge pipe, the second discharge pipe, the third discharge pipe and the fourth discharge pipe are respectively provided with a flap valve.
Preferably, the contact surface between first sieve dish, second sieve dish and the third sieve dish and the bar recess that corresponds is the smooth surface, and, the gap between first sieve dish, second sieve dish and the third sieve dish and the bar recess that corresponds is less than 0.1mm, avoids the sand to get into in this gap.
Preferably, the width of the discharge port at the material blocking edge of the first sieve tray, the second sieve tray and the third sieve tray is the same as that of the corresponding bottom plate sieve hole section, and the positions of the discharge port of the first sieve tray, the discharge port of the second sieve tray and the discharge port of the third sieve tray and the bottom plate sieve holes are the same, so that the discharge ports and the bottom plate sieve holes of the first sieve tray, the second sieve tray and the third sieve tray are always positioned inside the grading hopper, and therefore all sand at different levels are positioned in the grading hopper after being separated, and casting sand or impurities with four particle sizes can.
Preferably, the heating temperature of the air heater is 250-350 ℃, hot air passes through the sieve holes of the first sieve tray, the second sieve tray and the third sieve tray and gradually goes upwards to form a steaming drawer type drying structure, the water content of sand is gradually increased from bottom to top, and moisture generated by drying is favorably discharged out of the air outlet chimney.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, a three-stage separation process is formed through the first sieve tray, the second sieve tray and the third sieve tray, springs and spherical hammers are arranged on two sides of the first sieve tray, the second sieve tray and the third sieve tray, and the spheres form pendulum motion through a cam structure, so that the first sieve tray, the second sieve tray and the third sieve are impacted, and large-amplitude vibration is generated under the elastic recovery action of the springs, so that on one hand, sand can move on each stage of sieve tray to avoid piling, on the other hand, vibration can promote the sand to disperse, separate and smoothly enter respective discharge pipes, and thus casting sand or impurities with four particle sizes are obtained through three-stage separation to complete classification treatment.
2. According to the invention, hot air generated by the air heater passes through the third sieve tray, the second sieve tray and the sieve holes of the first sieve tray and is upwards step by step to form a steaming drawer type drying structure, the water content of sand is increased step by step from bottom to top, moisture generated by drying is favorably discharged out of the air outlet chimney, and the drying efficiency is higher.
Drawings
FIG. 1 is a schematic view of the internal structure of a pendulum impact type foundry sand drying and classifying device according to the present invention;
FIG. 2 is an external view of a pendulum impact type foundry sand drying and classifying apparatus according to the present invention;
fig. 3 is a schematic diagram of the internal structure of a grading hopper in a pendulum impact type foundry sand drying and grading device provided by the invention.
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.
Referring to fig. 1-3, a pendulum impact type casting sand drying and classifying device comprises a classifying box body 1, wherein a first sieve tray 3, a second sieve tray 4 and a third sieve tray 5 are fixedly connected to one inner side wall of the classifying box body 1 sequentially through a spring 2 from top to bottom, classifying hoppers 6 are fixedly connected to the other two symmetrical inner walls of the classifying box body 1, drawer frames 7 respectively matched with the first sieve tray 3, the second sieve tray 4 and the third sieve tray 5 in a sliding manner are arranged on the two symmetrical inner walls of the classifying hoppers 6, each drawer frame 7 consists of two symmetrical strip-shaped frames, the opposite side surfaces of the two symmetrical strip-shaped frames are provided with strip-shaped grooves, the two side frames of the first sieve tray 3, the second sieve tray 4 and the third sieve tray 5 are respectively matched with the corresponding strip-shaped grooves in a sliding manner, the middle parts of the bottom plates of the first sieve tray 3, the second sieve tray 4 and the third sieve tray 5 are in sieve meshes, and the first sieve tray 3 is larger than the second sieve mesh 4, the peripheries of the first sieve tray 3, the second sieve tray 4 and the third sieve tray 5 are all provided with material blocking edges, the middle parts of the material blocking edges of the first sieve tray 3, the second sieve tray 4 and the third sieve tray 5 in sliding fit with the drawer frame 7 are respectively provided with a discharge port, the middle part of a strip-shaped frame on one side of each drawer frame 7 is provided with a notch communicated with the discharge port, the discharge port of the first sieve tray 3 is communicated with a first discharge pipe 9, the discharge port of the second sieve tray 4 is communicated with a second discharge pipe 10, the discharge port of the third sieve tray 5 is communicated with a third discharge pipe 11, the first discharge pipe 9, the second discharge pipe 10 and the third discharge pipe 11 respectively extend out of the grading box body 1 and are connected with a collection bag, the first discharge pipe 9, the second discharge pipe 10 and the third discharge pipe 11 are all arranged on the central line position of one side wall of the grading hopper 6 and reciprocate along with the first sieve tray 3, the second sieve tray 4 and the third sieve tray 5, the first sieve tray 3, the discharge ports of the second sieve tray 4 and the third sieve tray 5 are communicated with the first discharge pipe 9, the second discharge pipe 10 and the third discharge pipe 11 all the time; the top surface of the grading hopper 6 is communicated with a feed hopper 12 and an air outlet chimney 13, the top parts of the feed hopper 12 and the air outlet chimney 13 respectively extend out of the top surface of the grading box body 1, the bottom wall of the grading hopper 6 is arranged in a slope, the bottom slope of the bottom wall of the grading hopper 6 is provided with a fourth discharge pipe 14, the bottom outlet of the fourth discharge pipe 14 always extends out of the side wall of the grading hopper 6 and the side wall of the grading box body 1, an air inlet pipe 15 is arranged between the bottom wall of the grading hopper 6 and the second sieve tray 4, one end of the air inlet pipe 15 is connected with an air pump 16, the air pump 16 is communicated with an air heater; the bottom surface of the top wall of the classification box body 1 is connected with a first pendulum rod 19, a second pendulum rod 20 and a third pendulum rod 21 through a hinge rod 18, the bottom ends of the first pendulum rod 19, the second pendulum rod 20 and the third pendulum rod 21 are respectively provided with a spherical hammer 22, the spherical hammers 22 of the first pendulum rod 19, the second pendulum rod 20 and the third pendulum rod 21 are respectively contacted with the edges of the first sieve tray 3, the second sieve tray 4 and the third sieve tray 5, two symmetrical inner side walls of the classification box body 1 are also provided with a rotating shaft 23, the rotating shaft 23 is parallel to the hinge rod 18, the middle part of the rotating shaft 23 is fixedly sleeved with three groups of cam blocks 24, the outer cambered surfaces of the three groups of cam blocks 24 are sequentially contacted with the middle parts of the first pendulum rod 19, the second pendulum rod 20 and the third pendulum rod 21.
Referring to FIG. 1, the first discharge pipe 9, the second discharge pipe 10, the third discharge pipe 11 and the fourth discharge pipe 14 are each provided with a flap valve 25.
Referring to fig. 3, the contact surfaces between the first sieve tray 3, the second sieve tray 4 and the third sieve tray 5 and the corresponding strip-shaped grooves are smooth surfaces, and the gaps between the first sieve tray 3, the second sieve tray 4 and the third sieve tray 5 and the corresponding strip-shaped grooves are smaller than 0.1mm, so that sand is prevented from entering the gaps.
Referring to fig. 1, the width of the discharge port at the material blocking edge of the first sieve tray 3, the second sieve tray 4 and the third sieve tray 5 is the same as the width of the corresponding bottom plate sieve hole section, and the positions of the discharge port of the first sieve tray 3, the second sieve tray 4 and the third sieve tray 5 and the bottom plate sieve holes are the same, so that the discharge ports and the bottom plate sieve holes are always positioned inside the grading hopper 6, and therefore, sand at each level is separated and then positioned in the grading hopper 6, and casting sand or impurities with four particle sizes can be obtained through three-level separation to complete grading treatment.
Referring to fig. 1, the heating temperature of the air heater 17 is 250-350 ℃, hot air passes through the sieve holes of the first sieve tray 3, the second sieve tray 4 and the third sieve tray 5 and gradually goes upwards to form a steam-drawer type drying structure, the water content of sand is gradually increased from bottom to top, and moisture generated by drying is favorably discharged out of the air outlet chimney 13.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A pendulum impact type casting sand drying and grading device comprises a grading box body (1) and is characterized in that a first sieve tray (3), a second sieve tray (4) and a third sieve tray (5) are fixedly connected to one inner side wall of the grading box body (1) sequentially through a spring (2) from top to bottom, grading hoppers (6) are fixedly connected to the other two symmetrical inner walls of the grading box body (1), drawer frames (7) which are respectively in sliding fit with the first sieve tray (3), the second sieve tray (4) and the third sieve tray (5) are arranged on the two symmetrical inner walls of the grading hoppers (6), each drawer frame (7) is composed of two symmetrical strip-shaped frames, strip-shaped grooves are formed in the opposite side surfaces of the two symmetrical strip-shaped frames, two side frames of the first sieve tray (3), the second sieve tray (4) and the third sieve tray (5) are respectively in sliding fit with the corresponding strip-shaped grooves, the middle parts of the bottom plates of the first sieve tray (3), the second sieve tray (4) and the third sieve tray (5) are in sieve mesh shapes, sieve meshes of the first sieve tray (3) are larger than sieve meshes of the second sieve tray (4) and sieve meshes of the third sieve tray (5), material blocking edges are arranged on the peripheries of the first sieve tray (3), the second sieve tray (4) and the third sieve tray (5), material blocking edges of the first sieve tray (3), the second sieve tray (4) and the third sieve tray (5) which are in sliding fit with the drawer frame (7) are respectively provided with a material outlet in the middle part, the middle part of a bar-shaped frame on one side of the drawer frame (7) is provided with a notch communicated with the material outlet, the material outlet of the first sieve tray (3) is communicated with a first material outlet pipe (9), the material outlet of the second sieve tray (4) is communicated with a second material outlet pipe (10), and the material outlet of the third sieve tray (5) is communicated with a third material outlet pipe (11), the first discharging pipe (9), the second discharging pipe (10) and the third discharging pipe (11) respectively extend out of the grading box body (1) and are connected with a collecting bag, the first discharging pipe (9), the second discharging pipe (10) and the third discharging pipe (11) are all arranged at the central line position of one side wall of the grading hopper (6) and reciprocate along with the first sieve tray (3), the second sieve tray (4) and the third sieve tray (5), and discharging ports of the first sieve tray (3), the second sieve tray (4) and the third sieve tray (5) are communicated with the first discharging pipe (9), the second discharging pipe (10) and the third discharging pipe (11) in part all the time;
the top surface of the grading hopper (6) is communicated with a feed hopper (12) and an air outlet chimney (13), the tops of the feed hopper (12) and the air outlet chimney (13) respectively extend out of the top surface of the grading box body (1), the bottom wall of the grading hopper (6) is arranged in a slope, a fourth discharge pipe (14) is arranged at the bottom of the slope of the bottom wall of the grading hopper (6), a bottom outlet of the fourth discharge pipe (14) always extends out of the side wall of the grading hopper (6) and the side wall of the grading box body (1), an air inlet pipe (15) is arranged between the bottom wall of the grading hopper (6) and the second sieve tray (4), one end of the air inlet pipe (15) is connected with an air pump (16), the air pump (16) is communicated with an air heater (17) through a pipeline, and the air heater (17) extends;
the bottom surface of the top wall of the grading box body (1) is connected with a first pendulum rod (19), a second pendulum rod (20) and a third pendulum rod (21) through a hinge rod (18), the bottom ends of the first pendulum rod (19), the second pendulum rod (20) and the third pendulum rod (21) are respectively provided with a spherical hammer (22), the spherical hammers (22) of the first pendulum rod (19), the second pendulum rod (20) and the third pendulum rod (21) are respectively in contact with the edges of the first sieve tray (3), the second sieve tray (4) and the third sieve tray (5), two inner side walls of the grading box body (1) are further provided with a rotating shaft (23), the rotating shaft (23) is parallel to the hinge rod (18), the middle part of the rotating shaft (23) is fixedly sleeved with three groups of cam blocks (24), and the outer arc surfaces of the three groups of cam blocks (24) sequentially correspond to the first pendulum rod (19), The middle parts of the second pendulum rod (20) and the third pendulum rod (21) are contacted, and three groups of cam blocks (24) have the same size but different included angles with the rotating shaft (23), so that the positions of the first sieve tray (3), the second sieve tray (4) and the third sieve tray (5) are different, and the sand has enough residence time on each sieve tray.
2. A pendulum impact foundry sand drying and classifying device according to claim 1, characterized in that the first discharge pipe (9), the second discharge pipe (10), the third discharge pipe (11) and the fourth discharge pipe (14) are each provided with a flap valve (25).
3. A pendulum impact foundry sand drying and classifying device according to claim 1, characterized in that the contact surfaces between the first (3), second (4) and third (5) sieve trays and the corresponding bar grooves are smooth surfaces, and the gaps between the first (3), second (4) and third (5) sieve trays and the corresponding bar grooves are less than 0.1mm, avoiding sand to enter into the gaps.
4. The pendulum impact type casting sand drying and classifying device according to claim 1, wherein the widths of the discharge ports at the blocking edges of the first sieve tray (3), the second sieve tray (4) and the third sieve tray (5) are the same as the widths of the corresponding bottom plate sieve hole sections and the positions of the blocking edges are the same as the widths of the corresponding bottom plate sieve hole sections, and the discharge ports of the first sieve tray (3), the second sieve tray (4) and the third sieve tray (5) and the bottom plate sieve holes are always positioned inside the classifying hopper (6), so that each grade of sand is separated and then positioned in the classifying hopper (6), and thus casting sand or impurities with four grain sizes can be obtained through three-grade separation to complete classification treatment.
5. The pendulum impact type foundry sand drying and classifying device as claimed in claim 1, wherein the heating temperature of the air heater (17) is 250-350 ℃, hot air passes through the sieve holes of the first sieve tray (3), the second sieve tray (4) and the third sieve tray (5) and gradually ascends to form a steamer tray type drying structure, the water content of sand gradually increases from bottom to top, and moisture generated by drying is favorably discharged out of the air outlet chimney (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011014526.7A CN112139445A (en) | 2020-09-24 | 2020-09-24 | Pendulum impact type casting sand drying and grading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011014526.7A CN112139445A (en) | 2020-09-24 | 2020-09-24 | Pendulum impact type casting sand drying and grading device |
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| CN112139445A true CN112139445A (en) | 2020-12-29 |
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| CN202011014526.7A Pending CN112139445A (en) | 2020-09-24 | 2020-09-24 | Pendulum impact type casting sand drying and grading device |
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| CN210497131U (en) * | 2019-07-23 | 2020-05-12 | 泰顺县陈秀华家庭农场 | Tealeaves stoving sieving mechanism |
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| CN204165337U (en) * | 2014-10-09 | 2015-02-18 | 安徽燕之坊食品有限公司 | Recleaner screen is dried in a kind of grain processing classification |
| CN205897799U (en) * | 2016-06-30 | 2017-01-18 | 重庆中重石油机械有限公司 | Hierarchical drying device of quartz sand |
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Application publication date: 20201229 |
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