Impurity separation processing device for recycling precoated sand

Abstract

The invention discloses an impurity separation processing device for precoated sand recovery, and relates to the technical field of precoated sand processing equipment, the impurity separation processing device for precoated sand recovery comprises an equipment shell, two side walls of the equipment shell are fixedly connected with support plates, a screening plate is rotatably connected between the two support plates, a postponing collection box is arranged on one side of the screening plate, and a driving mechanism is arranged on the screening plate and the equipment shell. The driving mechanism is used for driving the material screening plates to rotate and adjust, the winnowing mechanism is arranged on the material screening plates, and the winnowing mechanism comprises an air bellow, a fan and guide vanes. Through the synergistic effect of the driving mechanism and the winnowing mechanism, the single material screening plate can be switched between a first working state (small inclination angle) and a second working state (large inclination angle); according to the dynamic sorting method, the whole process of light impurity separation, temporary storage and heavy impurity separation is completed in one device, and a traditional multi-layer fixed screen which is complex in structure, needs layer-by-layer screening and is prone to blockage is replaced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coated sand processing equipment, and particularly relates to an impurity separation processing device for coated sand recovery. BACKGROUND

[0002] Coated sand is used for manufacturing metal castings with high precision and high surface quality. After use, coated sand may be mixed with metal particles, sand particles, dust and other impurities. These impurities may affect the performance of coated sand, reduce the strength, fluidity and fire resistance of coated sand, so that impurity separation needs to be performed to improve the purity of sand and ensure good casting performance. Coated sand is screened layer by layer through multiple layers of screens when impurities are removed.

[0003] In the prior art, coated sand is screened layer by layer through multiple layers of screens of a screening device, and the processing speed is slow layer by layer. In addition, the multiple layers of screens need to be cleaned and replaced regularly in long-term use, which increases the maintenance frequency and related costs.

[0004] Therefore, the technical personnel in the art provide an impurity separation processing device for coated sand recovery to solve the problems in the background art. SUMMARY

[0005] The present application relates to the technical field of coated sand processing equipment, and particularly relates to an impurity separation processing device for coated sand recovery.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: An impurity separation processing device for coated sand recovery, comprising a device shell, two side walls of the device shell are fixedly connected with support plates, a sieve plate is rotatably connected between two groups of support plates, a temporary collection box is arranged on one side of the sieve plate, a driving mechanism is arranged on the sieve plate and the device shell, the driving mechanism is used for driving the sieve plate to rotate and adjust, an air separation mechanism is arranged on the sieve plate, the air separation mechanism comprises a bellows, a fan and guide vanes, the upper side of the sieve plate is fixedly connected with the bellows, the upper side of the bellows is fixedly connected with the fan, the inner side wall of the bellows is rotatably connected with multiple groups of guide vanes, the fan is used for air separation of coated sand on the sieve plate, and the guide vanes are used for guiding the air of the fan.

[0007] As a further scheme of the present application, the air separation mechanism further comprises an adjusting unit and a collection unit, the adjusting unit is used for adjusting the guide vanes, and the collection unit is used for collecting light impurities separated by air.

[0008] As a further scheme of the present application, the adjusting unit is arranged on the bellows and the multiple groups of guide vanes, and is used for adjusting the guide vanes.

[0009] As a further further scheme of the present application: the adjusting unit comprises a second servo motor, a fixed rod and an adjusting rod, one side of a group of the guide vanes is fixedly connected to the output end of the second servo motor, the other end of the second servo motor is fixedly connected to the side wall of the wind box, one end of a plurality of groups of the guide vanes is fixedly connected to the fixed rod, and the other end of the plurality of groups of the fixed rod is rotatably connected to the adjusting rod.

[0010] As a further further scheme of the present application: a collecting unit is arranged on the wind box, and the collecting unit is used for collecting the light impurities separated by the winnowing.

[0011] As a further further scheme of the present application: the collecting unit comprises an inclined fixed block, a connecting pipe and a collecting box, the two side walls of the wind box are fixedly connected to the inclined fixed blocks, one side of the wind box is fixedly connected to the collecting box, and the collecting box and the wind box are fixedly connected through the connecting pipe.

[0012] As a further scheme of the present application: the driving mechanism comprises a connecting rod, a first servo motor, a lead screw and a sliding block, one side of the equipment shell is fixedly connected to the first servo motor, the output end of the first servo motor is fixedly connected to the lead screw, the equipment shell is slidingly connected to the sliding block close to the lead screw, the lead screw penetrates through the sliding block in a threaded manner, one end of the sliding block is rotatably connected to the connecting rod, and the other end of the connecting rod is rotatably connected to one side of the screening plate.

[0013] As a further scheme of the present application: two groups of contact switches are fixedly connected to one side of the screening plate close to the screening plate, and the contact switches are electrically connected to the second servo motor.

[0014] As a further scheme of the present application: a vibration motor is fixedly connected to one side of the lower end of the screening plate.

[0015] As a further scheme of the present application: a feeding opening is arranged on the upper side of the equipment shell, a guide plate is fixedly connected to the side wall of the equipment shell close to the feeding opening, and a first discharge plate and a second discharge plate are fixedly connected to the other side wall of the equipment shell close to the guide plate.

[0016] Compared with the prior art, the present application has the following beneficial effects: 1. The present application can switch the single screening plate between the first working state (small inclination) and the second working state (large inclination) through the cooperation of the driving mechanism and the winnowing mechanism, so as to preferentially remove light impurities and heavy impurities respectively, and the dynamic separation method realizes the whole process of light impurity separation, temporary storage and heavy impurity separation in one device, replacing the traditional multi-layer fixed screen which has a complex structure, needs to be screened layer by layer and is easy to be blocked.

[0017] 2.The present application automatically identifies the real-time inclination angle of the screening plate through the contact switch, and triggers the adjustment unit to synchronously adjust the guide angle of the guide vane according to the inclination angle, so as to ensure that the wind direction and the material flow trajectory can form an optimal angle in each working state, so that the winnowing force in the light impurity separation stage and the winnowing effect in the heavy impurity separation stage are better, thereby realizing the winnowing effect without manual intervention. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an impurity separation processing device for coated sand recycling.

[0019] Figure 2 It is a structural schematic diagram of the inside of an impurity separation processing device for coated sand recycling.

[0020] Figure 3 It is a structural schematic diagram of an impurity separation processing device for coated sand recycling in a first working state to remove lighter impurities.

[0021] Figure 4 It is a structural schematic diagram of an impurity separation processing device for coated sand recycling in a second working state to remove heavier impurities. Figure 5 It is a structural schematic diagram of a driving mechanism in an impurity separation processing device for coated sand recycling. Figure 6 It is a structural sectional view schematic diagram of a winnowing mechanism in an impurity separation processing device for coated sand recycling. Figure 7 It is a structural schematic diagram of a guide unit in an impurity separation processing device for coated sand recycling. Figure 8 It is a structural schematic diagram of a contact switch in an impurity separation processing device for coated sand recycling.

[0022] In the figure: 1, device shell; 11, feed leak; 12, guide plate; 13, first discharge plate; 14, second discharge plate; 15, support plate; 2, screening plate; 3, driving mechanism; 32, connecting rod; 33, first servo motor; 34, screw rod; 35, sliding block; 4, winnowing mechanism; 41, air bellow; 42, fan; 44, guide vane; 451, second servo motor; 452, fixed rod; 453, adjustment rod; 46, inclined fixed block; 47, connecting pipe; 48, collection box; 5, temporary collection box; 6, contact switch; 7, vibration motor. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0024] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , the embodiment of the present application provides a kind of impurity separation processing device for coated sand recovery, including equipment shell 1, the both sides of the equipment shell 1 are fixedly connected with support plate 15, two groups of support plate 15 are rotatably connected with sieve plate 2, temporary collection box 5 is arranged on one side of the sieve plate 2, drive mechanism 3 is arranged on the sieve plate 2 and equipment shell 1, and the drive mechanism 3 is used to drive the sieve plate 2 to rotate and adjust, winnowing mechanism 4 is arranged on the sieve plate 2, and the winnowing mechanism 4 includes air bellow 41, fan 42 and guide vane 44, the upper side of the sieve plate 2 is fixedly connected with air bellow 41, the upper side of the air bellow 41 is fixedly connected with fan 42, the inner side of the air bellow 41 is rotatably connected with multiple groups of guide vane 44, the fan 42 is used to winnow coated sand on the sieve plate 2, and the guide vane 44 is used to guide the wind of fan 42.

[0025] In the embodiment, the angles of the sieve plate 2 and the guide vane 44 before impurity separation processing of coated sand are as shown in Figure 3 , Figure 3 , the impurity separation processing device is in initial state by default, the coated sand needing impurity separation processing is poured into the equipment shell 1 and falls on the sieve plate 2, at the same time, the fan 42 starts, the guide vane 44 guides the direction of winnowing, the sieve plate 2 has a small inclination angle, the coated sand slowly flows downward on the sieve plate 2 at the same time, the direction of winnowing is guided by the guide vane 44 as shown in Figure 3 , and the coated sand forms an included angle with the flow, the lighter impurities in the coated sand are blown up by winnowing, then guided by the inclined fixed block 46, the input end of the fan 42 blows air in the air bellow 41 at the same time, the output end of the fan 42 sucks air in the air bellow 41, so as to form pressure, and the lighter impurities blown up are taken into the collection box 48 for collection, the coated sand winnowed for the first time flows into the temporary collection box 5 for temporary collection, when the temporary collection box 5 is about to be full, stop adding coated sand into the equipment shell 1, wait for the coated sand on the sieve plate 2 to enter the temporary collection box 5, then start the drive mechanism 3 to drive the sieve plate 2 to rotate to the position as shown in Figure 4 , the sieve plate 2 has a large inclination angle, and the guide vane 44 is also adjusted to the position as shown inFigure 4 The film-coated sand in the collection box 5 flows downward on the screening plate 2 again, the inclination angle of the screening plate 2 is large, the heavy impurities flow faster than the normal film-coated sand, at the same time, the air selection blows upward to form a supporting force for the flowing film-coated sand, so that the film-coated sand flows slowly, the heavy impurities are more likely to overcome the air selection supporting force, at the same time, the air selection is beneficial to the stratification of the film-coated sand and the heavy impurities, the heavy impurities flow fast and fall far, the film-coated sand flow slow and fall near, so as to separate and collect, so that the single screening plate can be switched between the first working state (small inclination angle) and the second working state (large inclination angle) through the cooperation of the driving mechanism and the air selection mechanism, and the light impurities and the heavy impurities are removed preferentially, respectively, replacing the traditional multi-layer fixed screen with complex structure, which needs to be screened layer by layer and is easy to be blocked.

[0026] As shown in Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 Optionally, the air selection mechanism 4 further comprises an adjusting unit and a collecting unit, the adjusting unit is used for adjusting the guide vane 44, and the collecting unit is used for collecting the light impurities selected by air.

[0027] In the embodiment, the adjusting unit in the air selection mechanism 4 drives the guide vane 44 to rotate and adjust the angle according to the state of Figure 3 and Figure 4 , so that the guide vane 44 drives the air blown by the fan 42 to change the angle to the best state according to the demand of air selection of the material on the screening plate 2, and the collecting unit collects the light impurities selected by air to prevent the light impurities selected by air from blowing randomly and flowing into the film-coated sand again.

[0028] As shown in Figure 6 and Figure 7 , optionally, the air box 41 and the multiple groups of guide vanes 44 are provided with adjusting units, and the adjusting units are used for adjusting the guide vanes 44.

[0029] In the embodiment, the air box 41 and the multiple groups of guide vanes 44 are provided with adjusting units, when the device is adjusted to two different working states, the angle of the guide vane 44 is adjusted by the adjusting unit to adjust flexibly.

[0030] As shown in Figure 6 and Figure 7As shown, optionally, the adjustment unit includes a second servo motor 451, a fixing rod 452 and an adjusting rod 453, one side of a group of the guide blades 44 is fixedly connected to the output end of the second servo motor 451, and the other end of the second servo motor 451 is fixedly connected to the side wall of the bellows 41, one end of multiple groups of the guide blades 44 is fixedly connected to the fixing rod 452, and the other end of multiple groups of the fixing rods 452 is rotatably connected to the adjusting rod 453.

[0031] In this embodiment, when the angle of the guide blade 44 is adjusted, the second servo motor 451 is started to drive the second servo motor 451 to rotate. While the second servo motor 451 drives a group of guide blades 44 to rotate, it also drives a group of fixed rods 452 at the lower end to rotate. One group of fixed rods 452 drives the adjustment rod 453 to adjust, and the adjustment rod 453 drives multiple other groups of fixed rods 452 to rotate at the same time.

[0032] like Figure 6 As shown, optionally, a collecting unit is provided on the wind box 41, and the collecting unit is used to collect lighter impurities selected by air.

[0033] In this embodiment, a collecting unit is provided in the wind box 41 , and the lighter impurities separated by wind from the coated sand are collected by the collecting unit.

[0034] like Figure 6 As shown, optionally, the collection unit includes an inclined fixed block 46, a connecting pipe 47 and a collection box 48, both side walls of the bellows 41 are fixedly connected to the inclined fixed block 46, one side of the bellows 41 is fixedly connected to the collection box 48, and the collection box 48 and the bellows 41 are fixedly connected via a connecting pipe 47.

[0035] In this embodiment, when the device is in the first state, the screen plate 2 has a small inclination angle, and the coated sand slowly flows downward on the screen plate 2 while the guide blades 44 guide the direction of the air separation. Figure 3 As shown, an angle is formed between the film and the flowing coated sand, and the lighter impurities in the coated sand are blown up by air separation, and then guided through the inclined fixed block 46. At the same time, the inclined fixed blocks 46 on both sides can make the coated sand on the screen plate 2 flow into the inner side of the wind box 41 more uniformly. While the input end of the fan 42 blows air into the wind box 41, the output end of the fan 42 sucks air in the wind box 41, thereby forming pressure, and the lighter impurities blown up are transported to the collection box 48 through the connecting pipe 47. One end of the connecting pipe 47 connected to the collection box 48 is as shown. Figure 6 The funnel shape is shown to prevent the impurities collected in the collection box 48 from entering the bellows 41 through the connecting pipe 47 when the fan 42 stops working and there is no pressure. The collection box 48 has a filter element to filter the lighter impurities entering, and the filtered air is sucked away by the fan 42 to form a circulation.

[0036] As shown in Figure 3 , Figure 4 , Figure 5 , optionally, the driving mechanism 3 comprises a connecting rod 32, a first servo motor 33, a lead screw 34 and a sliding block 35, one side of the equipment shell 1 is fixedly connected with the first servo motor 33, the output end of the first servo motor 33 is fixedly connected with the lead screw 34, the equipment shell 1 is slidingly connected with the sliding block 35 close to the lead screw 34, the lead screw 34 penetrates through the sliding block 35 in a threaded manner, one end of the sliding block 35 is rotatably connected with the connecting rod 32, and the other end of the connecting rod 32 is rotatably connected to one side of the screening plate 2.

[0037] In this embodiment, when the equipment needs to be adjusted to the first or second working state, the angle of the screening plate 2 needs to be switched, the first servo motor 33 drives the lead screw 34 to rotate, the lead screw 34 drives the sliding block 35 on the outside to rotate in the sliding groove formed on the upper surface of the equipment shell 1, the sliding block 35 drives the connecting rod 32 to move, and the connecting rod 32 drives one end of the screening plate 2 to adjust the angle and move to the position shown in Figure 3 and Figure 4 .

[0038] As shown in Figure 3 , Figure 4 and Figure 8 , optionally, two groups of the contact switches 6 are fixedly connected to one side of the screening plate 2 close to the screening plate 2, and the contact switches 6 are electrically connected with the second servo motor 451.

[0039] In this embodiment, when the screening plate 2 is adjusted to the angle of the first or second working state of the equipment under the action of the driving mechanism 3, the screening plate 2 will press one group of the contact switches 6 at the two angles respectively, and the two groups of the contact switches 6 correspond to the angle state of the guide vane 44 in the two working states, and the two groups of the contact switches 6 and the corresponding side are inclined to facilitate the screening plate 2 to be pressed.

[0040] As shown in Figure 2 , Figure 3 , Figure 4 , Figure 5 , optionally, the lower end of the screening plate 2 is fixedly connected with a vibration motor 7.

[0041] In this embodiment, the vibration motor 7 fixedly connected to the lower end of the screening plate 2 can make the screening plate 2 vibrate slightly under the action of the vibration motor 7 when the material on the screening plate 2 is wind selected in the first or second working state, so as to prevent the coated sand from being blocked on the screening plate 2, and make the material on the screening plate 2 uniform.

[0042] As shown in Figure 1 , Figure 2 ,Figure 3 、 Figure 4 As shown in FIG. 1, the device shell 1 is provided with a feeding opening 11 on the upper side, and a guide plate 12 is fixedly connected to the sidewall of the device shell 1 near the feeding opening 11. A first discharging plate 13 and a second discharging plate 14 are fixedly connected to the other sidewall of the device shell 1 near the guide plate 12.

[0043] In this embodiment, the coated sand is discharged through the feeding opening 11 on the upper side of the device shell 1, and then the coated sand is guided to the screening plate 2 in the first working state of the device by the guide plate 12. The normal coated sand has a slow sliding speed of the heavy impurities, the second discharging plate 14 collects the normal coated sand, and the first discharging plate 13 collects the heavy impurities with a faster sliding speed than the normal coated sand.

[0044] It should be noted that the screening plate 2 is relatively long, and the heavy impurities and the normal coated sand can be separated.

[0045] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be considered as limiting the claims involved. In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. An impurity separation and processing device for recovering coated sand, characterized in that: include: An equipment housing (1), wherein both side walls of the equipment housing (1) are fixedly connected to support plates (15), and two sets of support plates (15) are rotatably connected to the screening plates (2); A temporary collection box (5) is provided on one side of the screening plate (2); A driving mechanism (3) is provided on the screening plate (2) and the device housing (1), and the driving mechanism (3) is used to drive the screening plate (2) to perform rotational adjustment; An air separation mechanism (4) is provided on the sieve plate (2), and the air separation mechanism (4) comprises a bellows (41), a fan (42) and guide vanes (44). The upper side of the sieve plate (2) is fixedly connected to the bellows (41), the upper side of the bellows (41) is fixedly connected to the fan (42), and the inner side wall of the bellows (41) is rotatably connected to multiple groups of guide vanes (44). The fan (42) is used to air-separate the coated sand on the sieve plate (2), and the guide vanes (44) are used to guide the wind of the fan (42).

2. The impurity separation and processing device for recovering coated sand according to claim 1, characterized in that: The air separation mechanism (4) further comprises an adjustment unit and a collection unit, wherein the adjustment unit is used to adjust the guide vanes (44), and the collection unit is used to collect lighter impurities selected by air.

3. The impurity separation and processing device for recovering coated sand according to claim 1, characterized in that: An adjustment unit is provided on the wind box (41) and the multiple groups of guide blades (44), and the adjustment unit is used to adjust the guide blades (44).

4. The impurity separation and processing device for recovering coated sand according to claim 3, characterized in that: The regulating unit comprises a second servo motor (451), a fixing rod (452) and an regulating rod (453); one side of a group of guide blades (44) is fixedly connected to the output end of the second servo motor (451), and the other end of the second servo motor (451) is fixedly connected to the side wall of the bellows (41); one end of multiple groups of guide blades (44) is fixedly connected to the fixing rod (452), and the other end of multiple groups of fixing rods (452) is rotatably connected to the regulating rod (453).

5. The impurity separation and processing device for recovering coated sand according to claim 1, characterized in that: A collecting unit is provided on the wind box (41), and the collecting unit is used to collect lighter impurities selected by wind.

6. The impurity separation and processing device for recovering coated sand according to claim 5, characterized in that: The collecting unit comprises an inclined fixing block (46), a connecting pipe (47) and a collecting box (48); both side walls of the wind box (41) are fixedly connected to the inclined fixing block (46); one side of the wind box (41) is fixedly connected to the collecting box (48); and the collecting box (48) and the wind box (41) are fixedly connected via the connecting pipe (47).

7. The impurity separation and processing device for recovering coated sand according to claim 1, characterized in that: The driving mechanism (3) includes a connecting rod (32), a first servo motor (33), a screw rod (34) and a slider (35). One side of the device housing (1) is fixedly connected to the first servo motor (33). The output end of the first servo motor (33) is fixedly connected to the screw rod (34). The device housing (1) is slidably connected to the slider (35) near the screw rod (34). The screw rod (34) is threaded through the slider (35). One end of the slider (35) is rotatably connected to the connecting rod (32), and the other end of the connecting rod (32) is rotatably connected to one side of the screen plate (2).

8. The impurity separation and processing device for recovering coated sand according to claim 4, characterized in that: Two groups of contact switches (6) are fixedly connected to one side of a group of the support plates (15) close to the screening plate (2), and the contact switches (6) are electrically connected to the second servo motor (451).

9. The impurity separation and processing device for recovering coated sand according to claim 1, characterized in that: A vibration motor (7) is fixedly connected to one side of the lower end of the screening plate (2).

10. The impurity separation and processing device for recovering coated sand according to claim 1, characterized in that: A feed opening (11) is provided on the upper side of the device housing (1), a side wall of the device housing (1) is fixedly connected to a material guide plate (12) near the feed opening (11), and the other side wall of the device housing (1) near the material guide plate (12) is passed through and fixedly connected to a first discharge plate (13) and a second discharge plate (14).

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