Cooling and dust removal device for casting sand

Abstract

The utility model provides a cooling and dust removing device for casting sand. The cooling and dust removing device comprises a supporting frame, a feeding bin, a feeding conveying belt, a roller, an exhaust fan, a dust collection mechanism, a driving mechanism, an inner cylinder, an outer cylinder, a hole set, a discharging opening and a sand guide plate. The inner cylinder, the outer cylinder, the exhaust fan and the dust collection mechanism are arranged, and casting sand exchanges heat with airflow generated by the exhaust fan in the process of moving from the inner cylinder to the outer cylinder, so that the temperature of the casting sand is reduced; in the process that the casting sand falls out of the discharging opening, the dust collection mechanism collects dust on the casting sand; therefore, the heat exchange efficiency of the sand for casting is improved, meanwhile, dust is sucked, and the situation that the dust diffuses into the air and pollutes the surrounding production environment is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of foundry sand recovery equipment, in particular to a foundry sand cooling and dust removal device. Background Art

[0002] A large amount of solid waste is generated in sand casting, mainly waste sand, and the waste sand is generally treated by grinding it, removing iron and recycling it; but in the actual operation process, the temperature of the waste sand is high after it is stripped from the casting, so it needs to be cooled; and the existing cooling treatment generally uses the ground casting sand to exchange heat with the environment naturally, which is inefficient; at the same time, there is still a lot of sand dust, organic matter, iron powder and other residues in the old sand after grinding and crushing, which cannot be used directly for casting. If the dust is not treated and spreads into the air, it will cause serious pollution to the surrounding production environment and damage the health of workers. Utility Model Content

[0003] The purpose of the utility model is to design a cooling and dust removal device for casting sand to solve the problems raised by the background technology. To achieve the above purpose, the utility model provides the following technical solutions: including a support frame, a feed bin fixed on the support frame, a feeding conveyor belt connected to the feed port of the feed bin, a roller with one end rotatably connected to the discharge port of the feed bin, an exhaust fan fixed to the inside of the feed bin and a dust suction mechanism installed on the outside of the roller, the outer wall of the roller is connected with a driving mechanism for driving the roller to rotate, the roller includes an inner cylinder and an outer cylinder, the inner cylinder is connected to the feed bin, and the end of the inner cylinder away from the feed bin is provided with a plurality of hole groups for connecting to the outer cylinder, a side wall of the outer cylinder close to the feed bin is provided with a discharge port, a discharge conveyor belt is provided below the discharge port, and the air suction port of the dust suction mechanism is aligned with the discharge port, and sand guide plates are provided on the outer cylinder and the inner cylinder, and the exhaust fan is aligned with the inner cylinder.

[0004] Furthermore, a feed plate is provided at the bottom of the feed bin, and the feed plate extends into the inner cylinder.

[0005] Furthermore, an exhaust cavity is provided at the bottom of the feed bin, the exhaust fan is installed inside the exhaust cavity, and the width of the exhaust cavity is greater than the width of the blanking plate.

[0006] Furthermore, an inclined baffle is provided at the end of the exhaust chamber, an inclined plate is provided on the support frame, the inclined baffle is aligned with the inclined plate and one end of the inclined plate is located directly above the unloading conveyor belt.

[0007] Furthermore, the driving mechanism includes an outer gear ring fixedly connected to the outer cylinder, a driving gear meshing with the outer gear ring, and a motor with the driving gear fixedly connected to the output end.

[0008] Furthermore, a protective cover is provided on the outer gear ring.

[0009] Furthermore, a supporting truncated platform is provided on the outer wall of the drum, the lower part of the supporting truncated platform is in close contact with two roller shafts, and the roller shafts are installed on the supporting seat.

[0010] Furthermore, the dust suction mechanism includes an air suction chamber, an air suction pipe connected to the top of the air suction chamber, and a vacuum cleaner connected to the air suction pipe. Two air suction ports are provided at the bottom of the air suction chamber. The air suction ports are located between the unloading conveyor belt and the unloading port, and the two air suction ports are located on both sides of the unloading port. The roller is located inside the air suction chamber.

[0011] Furthermore, the air intake pipe is connected to the feed bin via a connecting pipe.

[0012] Furthermore, the outer wall of the drum is rotatably connected to the water circulation cooling box.

[0013] Furthermore, a water spray pipe is provided on the top of the water circulation cooling box, and the nozzle on the water spray pipe is aimed at the outer wall of the drum. A water storage tank is provided at the bottom of the water circulation cooling box, and the water storage tank is connected to the cooling tower, and the cooling tower is connected to the water spray pipe.

[0014] Furthermore, the support frame is provided with an inclined rod, and an inclined roller is installed on the inclined rod. The inclined roller folds the edge of the conveyor belt in the feeding conveyor belt at a certain angle.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model is provided with an inner cylinder, an outer cylinder, an exhaust fan and a dust suction mechanism. In the process of the casting sand moving from the inner cylinder to the outer cylinder, heat exchange occurs with the airflow generated by the exhaust fan, thereby reducing the temperature of the casting sand; and in the process of the casting sand falling out of the discharge port, the dust suction mechanism suctions the casting sand; therefore, the utility model can improve the heat exchange efficiency of the casting sand while suctioning the dust, thereby preventing the dust from diffusing into the air and polluting the surrounding production environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a partial cross-sectional schematic diagram of the utility model;

[0020] Figure 3 It is another partial cross-sectional schematic diagram of the utility model.

[0021] Among them: 1. roller; 101. inner cylinder; 102. outer cylinder; 103. sand guide plate; 104. hole group; 105. unloading port; 2. driving mechanism; 21. protective cover; 22. outer gear ring; 23. driving gear; 24. motor; 3. dust suction mechanism; 301. connecting pipe; 302. suction chamber; 303. suction port; 4. feeding bin; 401. unloading plate; 402. exhaust fan; 403. inclined baffle; 404. inclined plate; 405. discharge port; 406. feeding port; 407. brush; 5. water circulation cooling box; 6. support frame; 61. inclined rod; 62. inclined roller; 7. unloading conveyor belt; 8. loading conveyor belt; 9. supporting round table; 10. roller; 11. supporting seat. DETAILED DESCRIPTION

[0022] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0023] Example: Please refer to Figure 1-3A cooling and dust removal device for casting sand comprises a support frame 6, a feed bin 4 fixedly connected to the support frame 6, a feeding conveyor belt 8 connected to a feed port 406 of the feed bin 4, a roller 1 having one end rotatably connected to a discharge port 405 of the feed bin 4, an exhaust fan 402 fixedly connected to the inside of the feed bin 4 and a dust collecting mechanism 3 installed outside the roller 1, a driving mechanism 2 for driving the roller 1 to rotate is connected to the outer wall of the roller 1, the roller 1 comprises an inner cylinder 101 and an outer cylinder 102, the inner cylinder 101 is connected to the feed bin 4, a plurality of hole groups 104 for connecting to the outer cylinder 102 are arranged at one end of the inner cylinder 101 away from the feed bin 4, and a discharge port 105 is arranged on a side wall of the outer cylinder 102 close to the feed bin 4 , a feeding conveyor belt 7 is provided below the feeding port 105, and the air inlet 303 of the dust collecting mechanism 3 is aligned with the feeding port 105, sand guide plates 103 are provided on the outer cylinder 102 and the inner cylinder 101, and the exhaust fan 402 is aligned with the inner cylinder 101; wherein, the feeding conveyor belt 7 and the feeding conveyor belt 8 adopt the common form of transmission belts, which will not be described in detail here, and an inclined rod 61 is provided on the support frame 6, and an inclined roller 62 is installed on the inclined rod 61, and the inclined roller 62 folds the conveyor belt edge in the feeding conveyor belt 8 at a certain angle to prevent the casting sand from falling out of the conveyor belt when feeding, and a brush 407 is provided at the lower part of the feeding port 406 of the feeding bin 4, and the brush 407 is in contact with the feeding conveyor belt 8 The conveyor belt below is tightly attached to clean the conveyor belt to prevent the foundry sand from falling on the ground and causing environmental pollution; the sand guide plates 103 on the outer cylinder 102 and the inner cylinder 101 guide the foundry sand in opposite directions, and the rotation connection can be a bearing connection. The ground foundry sand will be transported to the feed bin 4 through the feeding conveyor belt 8 and enter the inner cylinder 101 from the discharge port 405. Then the exhaust fan 402 is started, and the air flow will flow in from the other end of the drum 1, thereby generating an air flow to take away the heat of the foundry sand, thereby achieving a rapid cooling effect. In this process, the drum 1 rolls, and the foundry sand in the inner cylinder 101 is moved toward the hole group 10 under the action of the sand guide plate 103. 4. During the movement, the foundry sand is fully in contact with the air flow under the action of the inner cylinder 101 and the sand guide plate 103, thereby further improving the cooling efficiency of the foundry sand; when the foundry sand falls into the outer cylinder 102 from the hole group 104, under the action of the sand guide plate 103 of the outer cylinder 102, the foundry sand will move toward the discharge port 105 and fall into the discharge conveyor belt 7 from the discharge port 105, and the dust suction mechanism 3 suctions the foundry sand during the falling process, thereby eliminating the dust in the foundry sand. Therefore, the present invention is useful for improving the heat exchange efficiency of the foundry sand while absorbing the dust, preventing the dust from diffusing into the air and polluting the surrounding production environment.

[0024] In this embodiment, a discharge plate 401 is provided at the bottom of the feed bin 4, and the discharge plate 401 extends into the inner tube 101, so that the casting sand can fully enter the inner tube 101; an exhaust cavity is provided at the bottom of the feed bin 4, and an exhaust fan 402 is installed inside the exhaust cavity. The width of the exhaust cavity is larger than the width of the discharge plate 401, so as to reduce the obstruction of the discharge plate 401 to the air flow; and an inclined baffle 403 is provided at the end of the exhaust cavity, and an inclined plate 404 is provided on the support frame 6. The inclined baffle 403 is aligned with the inclined plate 404 and one end of the inclined plate 404 is located directly above the discharge conveyor belt 7, so that The casting sand extracted by the exhaust fan flows back into the unloading conveyor belt 7; the driving mechanism 2 includes an outer gear ring 22 fixedly connected to the outer cylinder 102, a driving gear 23 meshing with the outer gear ring 22, and a motor 24 with the driving gear 23 fixedly connected to the output end. When the motor 24 is started, the driving gear 23 will drive the outer gear ring 22 to rotate, thereby causing the rotation of the drum 1, and a protective cover 21 is also provided on the outer gear ring 22 to play a protective isolation role; in addition, a supporting truncated platform 9 is also provided on the outer wall of the drum 1, and the lower part of the supporting truncated platform 9 is tightly attached to the two roller shafts 10 and the roller shafts 10 are installed on the support seat 1 1, supporting the drum 1 to prevent the drum 1 from rotating stably; the dust collecting mechanism 3 includes a suction chamber 302, a suction pipe connected to the top of the suction chamber 302, and a vacuum cleaner connected to the suction pipe. Two suction ports 303 are provided at the bottom of the suction chamber 302. The suction ports 303 are located between the unloading conveyor belt 7 and the unloading port 105, and the two suction ports 303 are located on both sides of the unloading port 105. The drum 1 is located inside the suction chamber 302. When the vacuum cleaner is started, the suction port 303 will generate suction to remove dust from the casting sand dropped from the unloading port 105; the suction pipe It is connected with the feed bin 4 through the connecting pipe 301, so as to carry out preliminary dust removal on the casting sand and improve the dust removal efficiency of the casting sand; the outer wall of the drum 1 is rotatably connected with the water circulation cooling box 5, and a water spray pipe is provided on the top of the water circulation cooling box 5, and the nozzle on the water spray pipe is aimed at the outer wall of the drum 1, and a water storage tank is provided at the bottom of the water circulation cooling box 5, and the water storage tank is connected to the cooling tower, and the cooling tower is connected to the water spray pipe, so as to realize continuous cooling of the drum 1, and then realize cooling of the casting sand inside the drum 1; wherein, the cooling tower adopts a commonly used cooling water cooling tower, which will not be described in detail here.

[0025] How it works

[0026] When the ground foundry sand is transported to the feed bin 4 through the loading conveyor belt 8, the exhaust fan 402 is started, the motor 24, the unloading conveyor belt 7, the vacuum cleaner and the water circulation cooling box 5 are started, and the exhaust fan 402 generates airflow to flow through the inner cylinder 101. Under the action of the loading conveyor belt 8, the foundry sand falls from the discharge port 405 into the unloading plate 401 and then into the inner cylinder 101. The rotation of the motor 24 causes the rotation of the drum 1, so that the foundry sand falling into the inner cylinder 101 moves toward the hole group 104 under the action of the sand guide plate 103. During the movement, the foundry sand The inner cylinder 101 and the sand guide plate 103 are in full contact with the air flow, and the drum 1 continues to roll. When the casting sand falls into the outer cylinder 102 from the hole group 104, the casting sand will move toward the discharge port 105 and fall into the discharge conveyor belt 7 from the discharge port 105 under the action of the sand guide plate 103 of the outer cylinder 102. During the falling process, the dust suction mechanism 3 suctions the casting sand, thereby eliminating the dust in the casting sand. Therefore, the present invention is used to improve the heat exchange efficiency of the casting sand while absorbing the dust, so as to prevent the dust from diffusing into the air and polluting the surrounding production environment.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0028] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A device for cooling and dust removal of foundry sand, characterized in that: The invention comprises a feed bin (4) fixedly connected to a support frame (6), a feeding conveyor belt (8) connected to the feed bin (4), a roller (1) rotatably connected to the feed bin (4), an exhaust fan (402) fixedly connected to the inside of the feed bin (4), and a dust collection mechanism (3) installed outside the roller (1), wherein the outer wall of the roller (1) is connected to a driving mechanism (2) for driving the roller (1) to rotate, and the roller (1) comprises an inner cylinder (101) and an outer cylinder (102), wherein the inner cylinder (101) is connected to the feed bin (4) and the outer cylinder (102). 4), one end of the inner cylinder (101) away from the feed bin (4) is connected to the outer cylinder (102), a discharge port (105) is provided on a side wall of the outer cylinder (102) close to the feed bin (4), a discharge conveyor belt (7) is provided below the discharge port (105), and the air intake port (303) of the dust collection mechanism (3) is aligned with the discharge port (105), sand guide plates (103) are provided on both the outer cylinder (102) and the inner cylinder (101), and the exhaust fan (402) is aligned with the inner cylinder (101).

2. The device for cooling and dust removal of foundry sand according to claim 1, characterized in that: A material removal plate (401) is provided at the bottom of the feed bin (4), and the material removal plate (401) extends into the inner cylinder (101).

3. The device for cooling and dust removal of foundry sand according to claim 2, characterized in that: An exhaust cavity is provided at the bottom of the feed bin (4), the exhaust fan (402) is installed inside the exhaust cavity, and the width of the exhaust cavity is greater than the width of the unloading plate (401).

4. The device for cooling and dust removal of foundry sand according to claim 3, characterized in that: An inclined baffle (403) is provided at the end of the exhaust chamber, and an inclined plate (404) is provided on the support frame (6). The inclined baffle (403) is aligned with the inclined plate (404), and one end of the inclined plate (404) is located directly above the unloading conveyor belt (7).

5. The device for cooling and dust removal of foundry sand according to claim 1, characterized in that: The driving mechanism (2) comprises an outer gear ring (22) fixedly connected to the outer cylinder (102), a driving gear (23) meshing with the outer gear ring (22), and a motor (24) with the driving gear (23) fixedly connected at its output end.

6. The device for cooling and dust removal of foundry sand according to claim 5, characterized in that: A protective cover (21) is also provided on the outer gear ring (22).

7. The device for cooling and dust removal of foundry sand according to claim 1, characterized in that: A supporting truncated platform (9) is also provided on the outer wall of the drum (1), the lower part of the supporting truncated platform (9) is in close contact with two roller shafts (10), and the roller shafts (10) are installed on a supporting seat (11).

8. The device for cooling and dust removal of foundry sand according to claim 1, characterized in that: The dust suction mechanism (3) comprises an air suction chamber (302), an air suction pipe connected to the top of the air suction chamber (302), and a dust collector connected to the air suction pipe. The bottom of the air suction chamber (302) is provided with two air suction ports (303), the air suction ports (303) are located between the unloading conveyor belt (7) and the unloading port (105), and the two air suction ports (303) are located on both sides of the unloading port (105). The roller (1) is located inside the air suction chamber (302).

9. The device for cooling and dust removal of foundry sand according to claim 8, characterized in that: The air intake pipe is connected to the feed bin (4) via a connecting pipe (301).

10. The device for cooling and dust removal of foundry sand according to claim 1, characterized in that: The outer wall of the drum (1) is rotatably connected to a water circulation cooling box (5).

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