A charge crushing device for producing ductile iron castings

Abstract

The present invention discloses a charge crushing device for the production of ductile iron castings, which belongs to the technical field of ductile iron casting production. The device comprises a crushing box, wherein both sides of the crushing box are provided with a feed port, an internal fixed sleeve of the feed port is provided with a feed hopper, an interior of the feed hopper is provided with a preliminary crushing assembly, the preliminary crushing assembly is used to crush large pieces of charge, a side where the two feed hoppers are close to each other is provided with a lifting and blocking assembly, the lifting and blocking assembly is used to control the intermittent falling of charge in the feed hopper, and a driving crushing assembly is provided below the lifting and blocking assembly. The present invention not only facilitates the preliminary crushing of large pieces of charge, but also controls the intermittent falling of charge when the charge is falling and crushed, thereby preventing a large amount of falling material from affecting the quality of the crushing, and simultaneously performs dust collection during the crushing, thereby preventing a large amount of dust from escaping into the workshop, and during the dust collection, the dust collection hole is rotated and switched and cleaned, thereby preventing the dust collection hole from being blocked, thereby ensuring stable and efficient dust collection.

Description

Technical Field

[0001] The invention belongs to the technical field of ductile iron casting production, and in particular relates to a charge crushing device used for the production of ductile iron castings. Background Art

[0002] Ductile iron is an alloy material with high strength, high toughness, and high corrosion resistance. Therefore, it is widely used in industries such as machinery manufacturing, automobile manufacturing, shipbuilding, and construction engineering. Ductile iron is characterized by high ductility and plasticity, capable of withstanding certain impact and extrusion forces. It also offers excellent corrosion resistance and a long service life. Ductile iron can be produced using a variety of furnace charges, including graphite, calcium silicon, silicon aluminum, and silicon calcium aluminum. Graphite is the most commonly used charge because it increases the toughness and ductility of the casting.

[0003] The existing graphite used in ductile iron furnace charge needs to be crushed when it is used. However, since the graphite blocks are large and small during crushing, it is easier to crush some relatively small graphite blocks. However, if some larger graphite blocks are directly crushed, the graphite blocks are easy to break and roll, and cannot quickly contact the crushing roller to complete the crushing. Moreover, when feeding and crushing, large quantities of rapid feeding will also affect the crushing quality. At the same time, a large amount of dust is generated during crushing, and the dust is easy to escape into the workshop, which is not conducive to the workshop environment. For this reason, we propose a charge crushing device for the production of ductile iron parts. Summary of the Invention

[0004] In order to solve the above problems, the object of the present invention is to provide a charge crushing device for the production of ductile iron castings.

[0005] To achieve the above-mentioned purpose, the present invention proposes a charge crushing device for the production of ductile iron castings, comprising a crushing box, wherein feed ports are opened on both sides of the crushing box, a feed hopper is provided in a fixed sleeve inside the feed port, a preliminary crushing assembly is provided inside the feed hopper, and the preliminary crushing assembly is used to crush large pieces of charge, and a lifting and blocking assembly is provided on the side where the two feed hoppers are close to each other, and the lifting and blocking assembly is used to control the intermittent falling of the charge in the feed hopper, and a driving crushing assembly is provided below the lifting and blocking assembly, and the driving crushing assembly is used to crush the fallen charge, and a rotating dust suction assembly is connected to the driving crushing assembly, and the rotating dust suction assembly is used to absorb the flying dust generated by the crushing, and the rotating dust suction assembly is connected to the lifting and blocking assembly and controls its intermittent lifting and lowering, and the lifting and blocking assembly is connected to the preliminary crushing assembly and controls its crushing of the charge.

[0006] Preferably, the driving crushing assembly includes two rotating shafts rotatably arranged on the crushing box, the outer fixed sleeve of the rotating shaft is provided with a crushing roller, the fixed sleeve on the side of the rotating shaft extending out of the crushing box is provided with a gear, and the two gears are meshed for transmission, the outer wall of the crushing box is fixedly connected to a fixed plate, the fixed plate is fixedly connected to the first driving motor, and the output shaft of the first driving motor is fixedly connected to the rotating shaft, one end of the rotating shaft away from the first driving motor is fixedly connected to a first pulley, the fixed sleeve on the rotating dust collection assembly is provided with a second pulley, and the outer sleeves of the first pulley and the second pulley are provided with belts.

[0007] Preferably, the rotating dust suction assembly includes a dust suction tube that movably passes through the crushing box, and a second pulley fixed sleeve is provided on the outside of the dust suction tube, a brush plate fixedly connected to the inner wall of the crushing box is provided above the dust suction tube, and the fixed sleeves on both sides of the dust suction tube extending out of the crushing box are provided with cams, and the outside of the cam is provided with a sliding groove along its circumference, and the movable sleeves at both ends of the dust suction tube are provided with fixed tubes, the top end of the fixed tube is fixedly connected to the dust collector, and a positioning plate is fixedly connected between the bottom of the dust cleaner and the crushing box.

[0008] Preferably, the lifting and blocking material assembly includes a fixed column, the outside of the fixed column is fixedly connected to two first lifting rods, the bottom end of the first lifting rod is fixedly connected to a slider, and the slider is slidably arranged in a slide groove, the outside of the fixed column is fixedly connected to two second lifting rods, the bottom end of the second lifting rod is fixedly connected to a baffle, the outside of the fixed column is also fixedly connected to two third lifting rods, and the bottom end of the third lifting rod is fixedly connected to a movable frame.

[0009] Preferably, the preliminary crushing assembly includes a lifting frame movably mounted inside a movable frame, the bottom end of the lifting frame is rotatably connected to a connecting seat, the bottom of the connecting seat is fixedly connected to a movable jaw, the inner wall of the feed hopper is fixedly connected to a positioning shaft, and the movable jaw is movably mounted on the outside of the positioning shaft.

[0010] Preferably, a conveying assembly is provided below the driven crushing assembly, and the conveying assembly includes two first side plates and two second side plates fixedly connected to the crushing box, a conveying roller is rotatably provided between the two first side plates, and a plurality of conveying rollers are also rotatably provided between the two second side plates, and a conveying belt is provided on the outside of the conveying roller, a second driving motor is fixedly connected to one side of one of the second side plates, and the output shaft of the second driving motor is fixedly connected to the conveying roller, and two material guide plates fixedly connected to the crushing box are provided above the conveying belt.

[0011] Preferably, the baffle includes two vertical plates, two cross bars are fixedly connected between the two vertical plates, a reinforcement plate fixedly connected to the vertical plates is provided between the two cross bars, and the second lifting rod is fixedly connected to the reinforcement plate, and two lifting holes are provided on the top box wall of the crushing box, and the second lifting rod is movable through the lifting holes.

[0012] Preferably, a plurality of dust suction holes are arranged in an array on the dust suction pipe, rotating holes are arranged on both side walls of the crushing box, and the dust suction pipe movably passes through the rotating holes, and bristles are provided on the brush plate to clean the dust suction holes.

[0013] Preferably, support plates are fixedly connected to both sides of the crushing box, and the top of the support plates is fixedly connected to the feed hopper.

[0014] The charge crushing device for producing ductile iron castings proposed by the present invention can bring the following beneficial effects:

[0015] 1. The crushing component is driven to crush the charge, and the rotating dust collection component is also driven to work. The rotating dust collection component rotates to collect dust, which is conducive to quickly and efficiently sucking away the dust generated by the crushing, and reducing the large amount of dust escaping into the workshop;

[0016] 2. The dust collecting assembly is rotated to drive the lifting and blocking assembly to work, which will block the feed hopper to prevent the charge in the feed hopper from sliding down without restriction, thereby preventing a large amount of charge from falling and causing incomplete crushing;

[0017] 3. The lifting and blocking assembly drives the preliminary crushing assembly to work. The preliminary crushing assembly crushes the large pieces of furnace charge in the feed hopper by pressure, thereby breaking the large pieces of furnace charge into small pieces, which is beneficial to the subsequent crushing;

[0018] To sum up, this solution has a simple structure and novel design. It is not only convenient for the preliminary crushing of large pieces of furnace charge, but also controls intermittent material dropping when the furnace charge is dropped and crushed, so as to avoid a large amount of material dropping affecting the quality of crushing. At the same time, dust is sucked during crushing to avoid a large amount of dust escaping into the workshop. Moreover, the dust suction hole is rotated and switched during dust suction and cleaned to prevent the dust suction hole from being blocked, thereby ensuring stable and efficient dust suction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0020] In the attached figure:

[0021] Figure 1 It is a front view structural schematic diagram of the present invention;

[0022] Figure 2 It is a side structural schematic diagram of the present invention;

[0023] Figure 3 It is a schematic cross-sectional view of the present invention;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle;

[0025] Figure 5 is a schematic diagram of a second perspective three-dimensional structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of the driving crushing assembly of the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the rotary dust collection assembly of the present invention;

[0028] Figure 8 This is a schematic diagram of the three-dimensional structure of the lifting and blocking assembly of the present invention;

[0029] Figure 9 This is a schematic diagram of the three-dimensional structure of the preliminary crushing assembly of the present invention;

[0030] Figure 10 It is a partially cutaway perspective structural diagram of the crushing box and the conveying assembly of the present invention;

[0031] Figure 11 It is a schematic diagram of the three-dimensional structure of the baffle of the present invention.

[0032] In the figure: 1 crushing box, 2 feeding hopper, 3 supporting plate, 4 driving crushing assembly, 401 rotating shaft, 402 crushing roller, 403 gear, 404 fixing plate, 405 first driving motor, 406 first pulley, 407 second pulley, 408 belt, 5 rotating dust collection assembly, 501 dust collection pipe, 502 brush plate, 503 cam, 504 chute, 505 fixing pipe, 506 dust collector, 507 positioning plate, 6 lifting and blocking assembly, 6 01 fixed column, 602 first lifting rod, 603 slider, 604 second lifting rod, 605 baffle, 6051 vertical plate, 6052 horizontal bar, 6053 reinforcement plate, 606 third lifting rod, 607 movable frame, 7 preliminary crushing assembly, 701 lifting frame, 702 connecting seat, 703 movable jaw plate, 704 positioning shaft, 8 first side plate, 9 second side plate, 10 conveyor roller, 11 conveyor belt, 12 second drive motor, 13 guide plate. DETAILED DESCRIPTION

[0033] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0034] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0036] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the descriptions with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more schemes or examples.

[0038] like Figures 1 to 11As shown, an embodiment of the present invention proposes a charge crushing device for the production of ductile iron castings, including a crushing box 1, with feed ports opened on both sides of the crushing box 1, a feed hopper 2 provided in a fixed sleeve inside the feed port, a preliminary crushing component 7 provided inside the feed hopper 2, and the preliminary crushing component 7 is used to crush large pieces of charge, and a lifting and blocking component 6 is provided on the side where the two feed hoppers 2 are close to each other, and the lifting and blocking component 6 is used to control the intermittent falling of the charge in the feed hopper 2, and a driving crushing component 4 is provided below the lifting and blocking component 6, and the driving crushing component 4 is used to crush the fallen charge, and a rotating dust suction component 5 is connected to the driving crushing component 4, and the rotating dust suction component 5 is used to absorb the flying dust generated by the crushing, and the rotating dust suction component 5 is connected to the lifting and blocking component 6 and controls its intermittent lifting and lowering, and the lifting and blocking component 6 is connected to the preliminary crushing component 7 and controls its crushing of the charge.

[0039] like Figure 5 and Figure 6 As shown, the driving crushing assembly 4 includes two rotating shafts 401 rotatably arranged on the crushing box 1, the outer fixed sleeve of the rotating shaft 401 is provided with a crushing roller 402, the rotating shaft 401 extends out of the outer side of the crushing box 1 and is fixed with a gear 403, and the two gears 403 are engaged for transmission, the outer wall of the crushing box 1 is fixedly connected to a fixing plate 404, the fixing plate 404 is fixedly connected to a first driving motor 405, and the output shaft of the first driving motor 405 is fixedly connected to the rotating shaft 401, and one end of the rotating shaft 401 away from the first driving motor 405 is fixedly connected to A first pulley 406 and a second pulley 407 are fixedly mounted on the rotating dust collecting assembly 5. A belt 408 is mounted on the outer sleeve of the first pulley 406 and the second pulley 407. The first drive motor 405 drives the rotating shaft 401 to rotate, and the two gears 403 are engaged for transmission, so that the two rotating shafts 401 rotate synchronously. The rotating shaft 401 then drives the crushing rollers 402 to rotate, so that the two crushing rollers 402 will crush the furnace charge, and the rotating shaft 401 also drives the rotating dust collecting assembly 5 to work through the first pulley 406, the second pulley 407 and the belt 408.

[0040] like Figure 6 and Figure 7As shown, the rotary dust collection assembly 5 includes a dust collection tube 501 that is movable through the crushing box 1, and the second pulley 407 is fixedly sleeved on the outside of the dust collection tube 501. A brush plate 502 is fixedly connected to the inner wall of the crushing box 1 above the dust collection tube 501. Cams 503 are fixedly sleeved on both sides of the dust collection tube 501 extending out of the crushing box 1. A slide groove 504 is opened on the outside of the cam 503 along its circumference. Fixed tubes 505 are movably sleeved on both ends of the dust collection tube 501. The fixed tubes 505 A dust collector 506 is fixedly connected to the top of the dust collector 506, and a positioning plate 507 is fixedly connected between the bottom of the dust collector 506 and the crushing box 1. The second pulley 407 drives the dust suction pipe 501 to rotate. The dust suction pipe 501 will continuously switch the dust suction holes when rotating, and let the brush plate 502 clean the dust suction holes, which is conducive to keeping the dust suction holes unobstructed, thereby maintaining stable dust suction, and the dust collector 506 sucks dust through the fixed tube 505, and the dust suction pipe 501 also drives the cam 503 to rotate.

[0041] like Figure 7 and Figure 8 As shown, the lifting and blocking assembly 6 includes a fixed column 601, the outside of the fixed column 601 is fixedly connected to two first lifting rods 602, the bottom end of the first lifting rod 602 is fixedly connected to a slider 603, and the slider 603 is slidably set in the slide groove 504, the outside of the fixed column 601 is fixedly connected to two second lifting rods 604, the bottom end of the second lifting rod 604 is fixedly connected to a baffle 605, and the outside of the fixed column 601 is also fixedly connected to two third lifting rods 606. The bottom end is fixedly connected with a movable frame 607. When the cam 503 rotates, it will drive the slider 603 to move up and down with the help of the slide groove 504. The slider 603 drives the first lifting rod 602 to move up and down. The first lifting rod 602 drives the fixed column 601 to move up and down, and the fixed column 601 drives the second lifting rod 604 and the third lifting rod 606 to move up and down. The second lifting rod 604 drives the baffle 605 to move up and down. The lifting of the baffle 605 will intermittently open one side of the feed hopper 2, thereby facilitating intermittent material dropping from the feed hopper 2.

[0042] like Figure 8 and Figure 9 As shown, the preliminary crushing assembly 7 includes a lifting frame 701 movably mounted inside the movable frame 607, the bottom end of the lifting frame 701 is rotatably connected to a connecting seat 702, the bottom of the connecting seat 702 is fixedly connected to a movable jaw 703, the inner wall of the feed hopper 2 is fixedly connected to a positioning shaft 704, and the movable jaw 703 is movably mounted on the outside of the positioning shaft 704, the third lifting rod 606 will drive the movable frame 607 to rise and fall, and the movable frame 607 will drive the lifting frame 701 to rise and fall, and the lifting frame 701 drives the movable jaw 703 to swing back and forth around the positioning shaft 704 through the connecting seat 702, so that the movable jaw 703 can crush large pieces of furnace charge.

[0043] like Figure 10 As shown, a conveying assembly is provided below the driving crushing assembly 4, and the conveying assembly includes two first side plates 8 and two second side plates 9 fixedly connected to the crushing box 1, a conveying roller 10 is rotatably provided between the two first side plates 8, and a plurality of conveying rollers 10 are also rotatably provided between the two second side plates 9, and a conveying belt 11 is provided on the outside of the conveying roller 10, one side of one of the second side plates 9 is fixedly connected to a second driving motor 12, and the output shaft of the second driving motor 12 is fixedly connected to the conveying roller 10, and two guide plates 13 fixedly connected to the crushing box 1 are provided above the conveying belt 11, and a dust-proof curtain connected to the crushing box 1 is also provided above the conveying belt 11, the second driving motor 12 drives the conveying roller 10 to rotate, and the conveying roller 10 drives the conveying belt 11 to rotate, so that the conveying belt 11 will transport the crushed and fallen furnace materials.

[0044] like Figure 8 and Figure 11 As shown, the baffle 605 includes two vertical plates 6051, two horizontal bars 6052 are fixedly connected between the two vertical plates 6051, a reinforcement plate 6053 fixedly connected to the vertical plates 6051 is provided between the two horizontal bars 6052, and the second lifting rod 604 is fixedly connected to the reinforcement plate 6053, and two lifting holes are provided on the top box wall of the crushing box 1, and the second lifting rod 604 is movable through the lifting holes, and the vertical plates will block the feed hopper 2.

[0045] like Figure 7 As shown, a plurality of dust suction holes are arranged in an array on the dust suction tube 501, and rotating holes are arranged on the two side walls of the crushing box 1, and the dust suction tube 501 is movable through the rotating holes, and bristles are provided on the brush plate 502, and the dust suction holes are cleaned by the bristles. The dust suction holes on the dust suction tube 501 will be continuously cleaned and unblocked by the bristles when rotating.

[0046] like Figure 4 As shown, support plates 3 are fixedly connected to both sides of the crushing box 1 , and the top of the support plates 3 is fixedly connected to the feed hopper 2 .

[0047] Working principle: When the charge enters the feed hopper 2, the large pieces of charge can be placed under the movable jaw plate 703, while the small pieces of charge slide through the upper part of the movable jaw plate 703 and fall into the feed hopper 2. When the charge is crushed, the first drive motor 405 is used to drive the rotating shaft 401 to rotate, and the two gears 403 are engaged for transmission, so that the two rotating shafts 401 rotate synchronously, and the rotating shaft 401 drives the crushing roller 402 to rotate, so that the two crushing rollers 402 will crush the charge, and the rotating shaft 401 is also driven by the first drive motor 405 to drive the rotating shaft 401 to rotate. A pulley 406, a second pulley 407 and a belt 408 drive the rotating dust collection component 5 to work, wherein the second pulley 407 drives the dust collection tube 501 to rotate, and the dust collection tube 501 continuously switches the dust collection holes when rotating. The dust collection holes on the dust collection tube 501 are continuously cleaned and dredged by the bristles when rotating, which is conducive to keeping the dust collection holes unobstructed, thereby maintaining stable dust collection, and the vacuum cleaner 506 performs dust collection through the fixed tube 505. At the same time, the dust collection tube 501 also drives the cam 503 to rotate, and the cam 503 rotates. When the slider 603 is lifted and lowered, the slider 603 drives the first lifting rod 602 to lift and lower, the first lifting rod 602 drives the fixed column 601 to lift and lower, and the fixed column 601 drives the second lifting rod 604 and the third lifting rod 606 to lift and lower, and the second lifting rod 604 drives the baffle 605 to lift and lower, and the lifting of the baffle 605 will intermittently open one side of the feed hopper 2, thereby facilitating the intermittent discharge of the feed hopper 2 and preventing a large amount of material from affecting the crushing effect. At the same time, the third lifting rod 606 will drive The movable frame 607 is raised and lowered, and the movable frame 607 drives the lifting frame 701 to rise and fall. The lifting frame 701 drives the movable jaw 703 to swing back and forth around the positioning shaft 704 through the connecting seat 702, so that the movable jaw 703 can crush the large pieces of furnace charge to prevent the large pieces of furnace charge from falling between the crushing rollers 402 and breaking and jumping when crushed, thereby affecting the crushing efficiency. Finally, the second drive motor 12 drives the conveyor roller 10 to rotate, and the conveyor roller 10 drives the conveyor belt 11 to rotate, so that the conveyor belt 11 can transport the crushed and fallen furnace charge away.

[0048] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.

[0049] The foregoing is merely an embodiment of the present invention and is not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A charge crushing device for producing ductile iron castings, comprising a crushing box (1), characterized in that: The crushing box (1) is provided with a feed port on both sides, and a feed hopper (2) is provided inside the feed port. A preliminary crushing assembly (7) is provided inside the feed hopper (2), and the preliminary crushing assembly (7) is used to crush large pieces of furnace charge. A lifting and blocking assembly (6) is provided on the side where the two feed hoppers (2) are close to each other, and the lifting and blocking assembly (6) is used to control the intermittent falling of furnace charge in the feed hopper (2). A driving crushing assembly (4) is provided below the lifting and blocking assembly (6), and the driving crushing assembly (4) is used to crush the falling furnace charge. A rotating dust collecting assembly (5) is connected to the driving crushing assembly (4), and the rotating dust collecting assembly (5) is used to absorb the flying dust generated by the crushing. The rotating dust collecting assembly (5) is connected to the lifting and blocking assembly (6) and controls its intermittent lifting and lowering. The lifting and blocking assembly (6) is connected to the preliminary crushing assembly (7) and controls its crushing of furnace charge. The rotating dust collection component (5) is provided with a second pulley (407) on a fixed sleeve, the rotating dust collection component (5) includes a dust collection tube (501) that is movable through the crushing box (1), and the second pulley (407) is fixedly sleeved on the outside of the dust collection tube (501), a brush plate (502) fixedly connected to the inner wall of the crushing box (1) is provided above the dust collection tube (501), and the fixed sleeves on both sides of the dust collection tube (501) extending outside the crushing box (1) are provided with cams (503), and the outside of the cam (503) is provided with a sliding groove (504) along its circumference, and the two ends of the dust collection tube (501) are movably sleeved with fixed tubes (505), the top end of the fixed tube (505) is fixedly connected to a dust collector (506), and a positioning plate (507) is fixedly connected between the bottom of the dust collector (506) and the crushing box (1); The lifting and blocking assembly (6) includes a fixed column (601), the outside of the fixed column (601) is fixedly connected to two first lifting rods (602), the bottom end of the first lifting rod (602) is fixedly connected to a slider (603), and the slider (603) is slidably set in a slide groove (504), the outside of the fixed column (601) is fixedly connected to two second lifting rods (604), the bottom end of the second lifting rod (604) is fixedly connected to a baffle (605), and the outside of the fixed column (601) is also fixedly connected to two third lifting rods (606), and the bottom end of the third lifting rod (606) is fixedly connected to a movable frame (607).

2. A charge crushing device for producing ductile iron castings according to claim 1, characterized in that: The driving crushing assembly (4) comprises two rotating shafts (401) rotatably arranged on the crushing box (1); a crushing roller (402) is provided on an outer fixed sleeve of the rotating shaft (401); a fixed sleeve on one side of the rotating shaft (401) extending outside the crushing box (1) is provided with a gear (403), and the two gears (403) are meshed for transmission; a fixing plate (404) is fixedly connected to the outer wall of the crushing box (1); a first driving motor (405) is fixedly connected to the fixing plate (404); and an output shaft of the first driving motor (405) is fixedly connected to the rotating shaft (401); one end of one of the rotating shafts (401) away from the first driving motor (405) is fixedly connected to a first pulley (406); and the outer sleeves of the first pulley (406) and the second pulley (407) are provided with a belt (408).

3. The charge crushing device for producing ductile iron castings according to claim 1, characterized in that: The preliminary crushing assembly (7) comprises a lifting frame (701) movably sleeved inside a movable frame (607); the bottom end of the lifting frame (701) is rotatably connected to a connecting seat (702); the bottom of the connecting seat (702) is fixedly connected to a movable jaw (703); the inner wall of the feed hopper (2) is fixedly connected to a positioning shaft (704), and the movable jaw (703) is movably sleeved outside the positioning shaft (704).

4. The charge crushing device for producing ductile iron castings according to claim 1, characterized in that: A conveying assembly is provided below the driving crushing assembly (4), and the conveying assembly includes two first side plates (8) and two second side plates (9) fixedly connected to the crushing box (1). A conveying roller (10) is rotatably provided between the two first side plates (8), and a plurality of conveying rollers (10) are also rotatably provided between the two second side plates (9). A conveying belt (11) is provided on the outside of the conveying roller (10), one side of one of the second side plates (9) is fixedly connected to a second driving motor (12), and an output shaft of the second driving motor (12) is fixedly connected to the conveying roller (10). Two guide plates (13) fixedly connected to the crushing box (1) are provided above the conveying belt (11).

5. The charge crushing device for producing ductile iron castings according to claim 1, characterized in that: The baffle (605) includes two vertical plates (6051), two horizontal bars (6052) are fixedly connected between the two vertical plates (6051), a reinforcing plate (6053) fixedly connected to the vertical plates (6051) is provided between the two horizontal bars (6052), and the second lifting rod (604) is fixedly connected to the reinforcing plate (6053), and two lifting holes are provided on the top box wall of the crushing box (1), and the second lifting rod (604) movably passes through the lifting holes.

6. The charge crushing device for producing ductile iron castings according to claim 1, characterized in that: The dust suction pipe (501) is provided with a plurality of dust suction holes in an array, the two side walls of the crushing box (1) are provided with rotation holes, and the dust suction pipe (501) movably passes through the rotation holes, and the brush plate (502) is provided with bristles, and the dust suction holes are cleaned by the bristles.

7. The charge crushing device for producing ductile iron castings according to claim 1, characterized in that: Support plates (3) are fixedly connected to both sides of the crushing box (1), and the top of the support plate (3) is fixedly connected to the feed hopper (2).

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