Casting system based on waste steel recycling

Abstract

The utility model belongs to the technical field of casting equipment, and particularly relates to a casting system based on waste steel recycling, which comprises a crushing mechanism for crushing waste steel and a smelting mechanism for smelting the waste steel, the conveying mechanism is used for conveying the crushed waste steel, the magnetic separation mechanism is used for conducting magnetic separation on the waste steel on the conveying mechanism, the casting mechanism is used for casting forming, the magnetic separation mechanism comprises a primary separation assembly and a fine separation assembly, the magnetic separation mechanism is used for adsorbing the waste steel and removing other impurities, and the quality of smelted castings is guaranteed; and the magnetic separation mechanism with the primary separation assembly and the fine separation assembly is adopted, so that waste of the waste steel can be avoided, the recycling rate of the waste steel is increased, and the manufacturing cost of castings is further reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting equipment, and in particular relates to a casting system based on the recycling of scrap steel. Background Art

[0002] A casting is a metal product made through a casting process. The manufacturing process involves melting the metal into a liquid state, then pouring it into a mold and cooling and solidifying it into a product of the desired shape and size. As one of the core technologies in the metal processing industry, casting manufacturing technology has a long history and wide application.

[0003] In recent years, with the continuous rise in pig iron prices, the cost of castings has also been increasing. In order to reduce the cost of castings, some foundries have begun to try to use scrap steel instead of pig iron to produce ductile iron castings and other casting products. Practice has proved that it is feasible to produce ductile iron castings by smelting scrap steel. However, there are some impurities in the material after the scrap steel is crushed. If these impurities are not removed before smelting, it is easy to affect the quality of the product.

[0004] For example, Chinese patent application number (CN202010830716.X) discloses a recycling device for producing castings using scrap iron and scrap steel. The application uses an electromagnet to adsorb iron and steel chips, but iron and steel chips vary in size. Therefore, in order to avoid collision with large particles of iron and steel chips, the electromagnet is set at a height, which makes it difficult for some small particles of iron and steel chips to be adsorbed, resulting in waste, which needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide a casting system based on the reuse of scrap steel in order to solve the above-mentioned technical problems, thereby achieving the effects of improving the recycling effect, reducing the manufacturing cost and ensuring the quality of the casting products.

[0006] In view of this, the utility model provides a casting system based on the recycling of scrap steel, comprising:

[0007] A crushing mechanism, used for crushing scrap steel;

[0008] A smelting mechanism, used for smelting scrap steel;

[0009] A conveying mechanism, used to convey the crushed scrap steel to the side of the smelting mechanism;

[0010] The magnetic separation mechanism is installed between the conveying mechanism and the smelting mechanism, and is used to magnetically separate the scrap steel on the conveying mechanism and then convey it to the smelting mechanism;

[0011] A casting mechanism, connected to the smelting mechanism and used for forming castings;

[0012] The magnetic separation mechanism includes a primary separation component for initially magnetically separating the scrap steel and a fine separation component for magnetically separating the scrap steel again.

[0013] In the above technical solution, further, the preliminary selection components include:

[0014] An electromagnetic suction cup is installed above the conveying mechanism and the smelting mechanism and is used to absorb the scrap steel on the conveying mechanism;

[0015] A hanger, used for hanging the electromagnetic suction cup;

[0016] A support cylinder is installed at the bottom of the hanger;

[0017] A sliding rod is slidably connected in the support tube, one end of which is connected to the electromagnetic chuck, and the other end of which passes through the support tube and is hingedly connected to a connecting rod;

[0018] The turntable is installed on the hanger through a driving device, and one end of the connecting rod away from the supporting tube is hingedly connected to the turntable.

[0019] In the above technical solution, further, the preliminary selection component also includes:

[0020] A switch, mounted on the hanger and located above the support cylinder;

[0021] Touch block, mounted on the connecting rod;

[0022] Wherein, after the connecting rod and the sliding rod form an angle, the touch block touches the switch to start the electromagnetic suction cup.

[0023] In the above technical solution, further, the selected components include:

[0024] A first conveyor belt, one end of which is located below the end of the conveying direction of the conveying mechanism, and the other end of which is arranged obliquely upward and is used to convey the crushed scrap steel from bottom to top;

[0025] a baffle plate, mounted on the first conveyor belt;

[0026] A discharge hopper is installed at one side of the end of the first conveyor belt in the conveying direction and is used to discharge the material after magnetic separation;

[0027] A return hopper is installed at one side of the end of the first conveyor belt in the conveying direction and is located to guide the magnetically separated scrap steel into the smelting mechanism;

[0028] The bracket is installed on the side of the smelting mechanism and is used for the installation of the discharge hopper and the return hopper.

[0029] Wherein, an electromagnetic roller is arranged at one end of the first conveyor belt located at a higher position.

[0030] In the above technical solution, further, the smelting mechanism includes:

[0031] The body is installed on the side of the magnetic separation mechanism;

[0032] A smelting furnace, installed in the machine body;

[0033] A heater, installed in the body and used to heat the smelting furnace;

[0034] Wherein, a heat insulation layer is arranged on the inner wall of the machine body.

[0035] In the above technical solution, further, the smelting mechanism also includes:

[0036] The heightening blocks are installed at the bottom of the smelting furnace and are in plurality, with gaps formed between two adjacent heightening blocks.

[0037] In the above technical solution, further, the smelting mechanism also includes:

[0038] A discharge pipe is installed on the side of the machine body and is connected to the smelting furnace, and an electric control valve is provided at the end away from the smelting furnace;

[0039] Among them, the discharge pipe is arranged in an inverted L shape.

[0040] The beneficial effects of the utility model are:

[0041] 1. The scrap steel is adsorbed by the magnetic separation mechanism to remove other impurities and ensure the quality of the smelted castings. The magnetic separation mechanism with primary separation components and fine separation components can adsorb scrap steel of different sizes, avoid the waste of scrap steel, improve the recycling rate of scrap steel, and further reduce the manufacturing cost of castings.

[0042] 2. The sliding of the slide rod is driven by the turntable to improve efficiency, ensure the adsorption of scrap steel and its throwing to the smelting mechanism, and set the switch of the preliminary selection component on the rotating connecting rod, so that the electromagnetic suction cup is adsorbed when it is above the conveying mechanism, and released when it is above the smelting mechanism, thereby not only improving the efficiency of scrap steel smelting and feeding, but also avoiding the setting of remote control switches and reducing manufacturing costs.

[0043] 3. Through the arrangement of the first conveyor belt and the electromagnetic roller, the fine scrap steel is further recycled and simultaneously introduced into the smelting mechanism through the return hopper, thereby further improving the recycling efficiency and reducing the casting manufacturing cost.

[0044] 4. By setting up a heat insulation layer, heat loss can be avoided, the temperature in the smelting furnace can be guaranteed, and the quality of the castings can be guaranteed. At the same time, the heightening block can increase the heating area at the bottom of the smelting furnace, thereby improving the heating uniformity in the smelting furnace and improving the quality of the castings. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a structural schematic diagram of the utility model;

[0046] Figure 2 It is a top view of the utility model;

[0047] Figure 3 The utility model Figure 2 Sectional view at AA in the middle;

[0048] Figure 4 It is a structural schematic diagram of the preliminary selection assembly of the utility model;

[0049] Figure 5 It is a structural schematic diagram of the selected components of the utility model;

[0050] The markings in the figure are as follows: 1. smelting mechanism; 10. machine body; 11. smelting furnace; 12. heater; 13. insulation layer; 14. heightening block; 15. discharge pipe; 2. conveying mechanism; 3. magnetic separation mechanism; 30. primary selection assembly; 300. electromagnetic suction cup; 301. hanger; 302. support cylinder; 303. slide bar; 304. connecting rod; 305. turntable; 306. driving device; 307. switch; 308. touch block; 31. fine selection assembly; 310. first conveyor belt; 311. baffle; 312. discharge hopper; 313. return hopper; 314. bracket; 315. electromagnetic roller. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0052] Embodiment 1:

[0053] This embodiment provides a casting system based on the recycling of scrap steel, comprising:

[0054] A crushing mechanism, used for crushing scrap steel;

[0055] A smelting mechanism 1, used for smelting scrap steel;

[0056] The conveying mechanism 2 is used to convey the crushed scrap steel to the side of the smelting mechanism 1;

[0057] The magnetic separation mechanism 3 is installed between the conveying mechanism 2 and the smelting mechanism 1, and is used to magnetically separate the scrap steel on the conveying mechanism 2 and then convey it to the smelting mechanism 1;

[0058] A casting mechanism, connected to the smelting mechanism 1, and used for forming the casting;

[0059] The magnetic separation mechanism 3 includes a primary separation component 30 for performing primary magnetic separation on the scrap steel and a fine separation component 31 for performing secondary magnetic separation on the scrap steel;

[0060] Meanwhile, the primary selection component 30 is used to absorb larger scrap steel, and the fine selection component 31 is used to absorb smaller scrap steel. The crushing mechanism and the casting mechanism are existing mature technologies and will not be described in detail here.

[0061] It can be seen from this embodiment that the scrap steel is adsorbed by the magnetic separation mechanism 3 to remove other impurities and ensure the quality of the smelted castings. The magnetic separation mechanism 3 with the primary selection component 30 and the fine selection component 31 can adsorb scrap steel of different sizes, avoid the waste of scrap steel, improve the recycling rate of scrap steel, and further reduce the manufacturing cost of castings.

[0062] Embodiment 2:

[0063] This embodiment provides a casting system based on the recycling of scrap steel. In addition to the technical solutions of the above embodiments, it also has the following technical features. The preliminary selection component 30 includes:

[0064] The electromagnetic chuck 300 is installed above the conveying mechanism 2 and the smelting mechanism 1 and is used to absorb the scrap steel on the conveying mechanism 2;

[0065] A hanger 301 is used for suspending the electromagnetic chuck 300;

[0066] A support tube 302 is installed at the bottom of the hanger 301;

[0067] A sliding rod 303 is slidably connected in the support tube 302, and one end of the sliding rod is connected to the electromagnetic chuck 300, and the other end passes through the support tube 302 and is hinged to the connecting rod 304;

[0068] The turntable 305 is installed on the hanger 301 by providing a driving device 306, and one end of the connecting rod 304 away from the supporting tube 302 is hingedly connected to the turntable 305;

[0069] Among them, the hanger 301 is connected to the top wall in the workshop by bolts or welding, and the sliding rod 303 and the support tube 302 can be welded, and the hinge connection is a rivet connection. The driving device 306 can use a servo motor, and the specific structure of the electromagnetic suction cup 300 and the servo motor is the existing technology and will not be repeated here.

[0070] It can be seen from this embodiment that, through the setting of the hanger 301, the preliminary selection component 30 can be moved above the conveying mechanism 2 and the smelting mechanism 1, thereby improving the loading efficiency of the scrap steel, and the setting of the turntable 305 facilitates the reciprocating drive of the slide rod 303 through the turntable 305, thereby improving the convenience and efficiency of the drive.

[0071] Embodiment 3:

[0072] This embodiment provides a casting system based on the recycling of scrap steel. In addition to the technical solutions of the above embodiments, it also has the following technical features. The preliminary selection component 30 also includes:

[0073] The switch 307 is mounted on the hanger 301 and is located above the support tube 302;

[0074] A touch block 308 is mounted on the connecting rod 304;

[0075] Among them, after the connecting rod 304 and the sliding rod 303 form an angle, the touch block 308 touches the switch 307 to activate the electromagnetic suction cup 300, and the touch block 308 is made of elastic material, which can ensure that when the connecting rod 304 rotates to different angles, the degree of pressing on the switch 307 is different and can all be activated.

[0076] It can be seen from the present embodiment that by setting the switch 307 on the hanger 301 and the touch block 308 on the connecting rod 304 that rotates with the turntable 305, the electromagnetic suction cup 300 is adsorbed when it is located above the conveying mechanism 2, and is released when it is located above the smelting mechanism 1, thereby not only improving the scrap steel smelting and feeding efficiency, but also avoiding the need to set a remote control switch 307, thereby reducing manufacturing costs.

[0077] Embodiment 4:

[0078] This embodiment provides a casting system based on the recycling of scrap steel. In addition to the technical solutions of the above embodiments, it also has the following technical features. The selected component 31 includes:

[0079] A first conveyor belt 310, one end of which is located below the end of the conveying direction of the conveying mechanism 2, and the other end of which is arranged obliquely upward, and is used to convey the crushed scrap steel from bottom to top;

[0080] A baffle 311 is installed on the first conveyor belt 310;

[0081] A discharge hopper 312 is installed at one side of the end of the first conveyor belt 310 in the conveying direction and is used to discharge the material after magnetic separation;

[0082] The return hopper 313 is installed at one side of the end of the first conveyor belt 310 in the conveying direction, and is located to guide the magnetically separated scrap steel into the smelting mechanism 1;

[0083] The bracket 314 is installed on the side of the smelting mechanism 1 and is used for installing the discharge hopper 312 and the return hopper 313 .

[0084] The first conveyor belt 310 is provided with an electromagnetic roller 315 at one end located at a higher position;

[0085] Meanwhile, the discharge hopper 312 and the return hopper 313 are both arranged at an angle, and a vibrator may be arranged to increase the material discharge speed, and the baffle 311 and the first conveyor belt 310 may be fixed by bolts.

[0086] It can be seen from this embodiment that, through the setting of the first conveyor belt 310 and the electromagnetic roller 315, the fine scrap steel that is not adsorbed and recovered by the primary selection component 30 is recovered and simultaneously passed into the smelting mechanism 1 through the return hopper 313, thereby further improving the recovery efficiency and reducing the casting manufacturing cost. The baffle 311 can prevent the fine scrap steel from sliding out of the first conveyor belt 310 due to the inclined setting of the first conveyor belt 310.

[0087] Embodiment 5:

[0088] This embodiment provides a casting system based on the recycling of scrap steel. In addition to the technical solutions of the above embodiments, it also has the following technical features. The smelting mechanism 1 includes:

[0089] The body 10 is installed on the side of the magnetic separation mechanism 3;

[0090] A smelting furnace 11 is installed in the machine body 10;

[0091] A heater 12 is installed in the machine body 10 and is used to heat the smelting furnace 11;

[0092] Wherein, a heat insulation layer 13 is provided on the inner wall of the body 10;

[0093] Meanwhile, the heater 12 may be a burner or an electric heater 12, and the heat insulating layer 13 may be a filling heat insulating material, such as asbestos.

[0094] It can be seen from this embodiment that by providing the machine body 10 and the heat insulation layer 13, the high temperature is prevented from affecting the conveying mechanism 2 and the magnetic separation mechanism 3, thereby reducing the service life. At the same time, heat loss is avoided, the temperature in the smelting furnace 11 is guaranteed, and the quality of the casting is guaranteed.

[0095] Embodiment 6:

[0096] This embodiment provides a casting system based on the recycling of scrap steel. In addition to the technical solutions of the above embodiments, it also has the following technical features. The smelting mechanism 1 also includes:

[0097] The heightening blocks 14 are installed at the bottom of the smelting furnace 11 . There are multiple heightening blocks 14 , and gaps are formed between two adjacent heightening blocks 14 .

[0098] It can be seen from this embodiment that by setting the heightening block 14, the heating area at the bottom of the smelting furnace 11 can be increased, thereby improving the heating uniformity in the smelting process and improving the quality of the castings.

[0099] Embodiment 7:

[0100] This embodiment provides a casting system based on the recycling of scrap steel. In addition to the technical solutions of the above embodiments, it also has the following technical features. The smelting mechanism 1 also includes:

[0101] The discharge pipe 15 is installed on the side of the machine body 10 and is connected to the smelting furnace 11. An electric control valve is provided at the end away from the smelting furnace 11.

[0102] Among them, the discharge pipe 15 is arranged in an inverted L shape;

[0103] At the same time, the casting mechanism can be arranged below the discharge pipe 15; welding can be used between the discharge pipe 15 and the smelting furnace 11, and the electric control valve is a prior art and will not be described here. In addition to the electric control valve, the discharge pipe 15 can also adopt other structures for controlling its on and off.

[0104] It can be seen from this embodiment that by setting an L-shaped discharge pipe 15, it is convenient to discharge the material from the side of the smelting furnace 11. On the one hand, it is convenient to set the discharge direction downward, and on the other hand, it is convenient to set the casting mechanism on the side of the smelting furnace 11, thereby facilitating the movement of the casting mechanism and improving convenience.

[0105] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A casting system based on the recycling of scrap steel, characterized in that: include: A crushing mechanism, used for crushing scrap steel; A smelting mechanism (1), used for smelting scrap steel; A conveying mechanism (2) is used to convey the crushed scrap steel to the side of the smelting mechanism (1); The magnetic separation mechanism (3) is installed between the conveying mechanism (2) and the smelting mechanism (1) and is used to magnetically separate the scrap steel on the conveying mechanism (2) and then transport it to the smelting mechanism (1); A casting mechanism, connected to the smelting mechanism (1) and used for forming castings; The magnetic separation mechanism (3) comprises a primary separation component (30) for performing primary magnetic separation on the scrap steel and a fine separation component (31) for performing secondary magnetic separation on the scrap steel.

2. The casting system based on scrap steel recycling according to claim 1 is characterized in that: The primary selection component (30) comprises: An electromagnetic suction cup (300) is installed above the conveying mechanism (2) and the smelting mechanism (1) and is used to absorb the scrap steel on the conveying mechanism (2); A hanger (301) for suspending the electromagnetic chuck (300); A support tube (302) is installed at the bottom of the hanger (301); A sliding rod (303) is slidably connected in the support tube (302), one end of which is connected to the electromagnetic suction cup (300), and the other end of which passes through the support tube (302) and is hingedly connected to a connecting rod (304); The rotating disk (305) is installed on the hanger (301) by being provided with a driving device (306), and one end of the connecting rod (304) away from the supporting cylinder (302) is hingedly connected to the rotating disk (305).

3. The casting system based on scrap steel recycling according to claim 2 is characterized in that: The primary selection component (30) further comprises: A switch (307) is mounted on the hanger (301) and is located above the support tube (302); A touch block (308) mounted on the connecting rod (304); After the connecting rod (304) and the sliding rod (303) form an angle, the touch block (308) touches the switch (307) to start the electromagnetic suction cup (300).

4. The casting system based on scrap steel recycling according to claim 1, characterized in that: The fine selection component (31) comprises: A first conveyor belt (310), one end of which is located below the end of the conveying direction of the conveying mechanism (2), and the other end of which is arranged obliquely upward and is used to convey the crushed scrap steel from bottom to top; A baffle (311) mounted on the first conveyor belt (310); A discharge hopper (312) is installed at one side of the end of the first conveyor belt (310) in the conveying direction and is used to discharge the material after magnetic separation; A return hopper (313) is installed at one side of the end of the first conveyor belt (310) in the conveying direction and is located to guide the magnetically separated scrap steel into the smelting mechanism (1); A bracket (314) is installed on the side of the smelting mechanism (1) and is used for installing the discharge hopper (312) and the return hopper (313); Wherein, an electromagnetic roller (315) is provided at one end of the first conveyor belt (310) located at a higher position.

5. The casting system based on scrap steel recycling according to claim 1, characterized in that: The smelting mechanism (1) comprises: A machine body (10) is mounted on the side of the magnetic separation mechanism (3); A smelting furnace (11) is installed in the machine body (10); A heater (12) is installed in the machine body (10) and is used to heat the smelting furnace (11); Wherein, a heat insulation layer (13) is provided on the inner wall of the machine body (10).

6. The casting system based on scrap steel recycling according to claim 5, characterized in that: The smelting mechanism (1) further comprises: The heightening blocks (14) are installed at the bottom end of the smelting furnace (11) and are in plurality, with gaps formed between two adjacent heightening blocks (14).

7. The casting system based on scrap steel recycling according to claim 5, characterized in that: The smelting mechanism (1) further comprises: A discharge pipe (15) is installed on the side of the machine body (10) and is connected to the smelting furnace (11), and an electric control valve is arranged at one end away from the smelting furnace (11); Wherein, the discharge pipe (15) is arranged in an inverted L shape.

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