An old sand crusher

Abstract

This utility model relates to the casting field and discloses a coarse crusher for old sand, including a crushing box. The top of the crushing box is provided with a feed hopper, and the bottom is provided with a discharge hopper. The crushing box is equipped with a crushing component for crushing old sand. It also includes: a diversion component, including a diversion frame fixed inside the crushing box. The top of the diversion frame is curved upward to form a diversion section, and both sides of the diversion frame form a discharge channel with the inner wall of the crushing box; and a feed adjustment mechanism, including an adjustment plate rotatably connected to both sides of the diversion frame. This utility model sets a diversion component in the crushing box to guide the old sand and drop it from both sides through the discharge channels onto the crushing component for crushing, thereby changing the flow direction of the old sand and increasing the flow of the old sand to achieve diversion of the old sand. This facilitates the uniform falling of the old sand and avoids the old sand from accumulating on the crushing component and causing uneven crushing. It is beneficial to the uniform crushing of old sand and improves the crushing effect.

Description

Technical Field

[0001] This utility model relates to the field of casting, and in particular to a coarse crusher for old sand. Background Technology

[0002] Resin sand refers to molding sand or core sand that uses synthetic resin as a binder for the sand particles. Currently, after resin sand is used to make molds or cores, the resin undergoes an irreversible cross-linking reaction and solidifies through the action of a curing agent, thus giving the mold or core the necessary strength. However, when recycling used resin sand, it needs to be crushed and further processed to complete the recycling and reduce resource waste.

[0003] When existing coarse crushers crush old sand, a large amount of old sand is usually added into the machine body through the feed hopper and then crushed by the crushing mechanism. However, when a large amount of old sand is added at the same time, it often accumulates on the crushing mechanism, which can easily lead to uneven crushing, resulting in poor crushing effect and affecting the crushing and recycling of old sand. Utility Model Content

[0004] This utility model proposes a coarse crusher for old sand to solve the problems of uneven crushing and poor effect of existing coarse crushers.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coarse crusher for old sand, comprising a crushing box, wherein a feed hopper is provided at the top of the crushing box, a discharge hopper is provided at the bottom, and the interior of the crushing box is provided with crushing components for crushing old sand, and further comprising: The diversion assembly includes a diversion frame fixed inside the crushing box. The top of the diversion frame is curved upward to form a diversion section, and a discharge channel is formed between both sides of the diversion frame and the inner wall of the crushing box. The crushing assembly is located below the diversion frame. The feed adjustment mechanism includes an adjustment plate rotatably connected to both sides of the diverter. The adjustment plate is inclined in the feed channel, and there is a gap between the side of the adjustment plate away from the diverter and the inner wall of the crushing box. The adjustment plate is also connected to an elastic element that drives it to rotate and reset.

[0006] Preferably, upper connecting grooves are provided on both sides of the diversion frame, and rotating blocks are symmetrically installed on one side of each of the two adjusting plates, and the rotating blocks are rotatably installed in the upper connecting grooves via rotating shafts.

[0007] Preferably, the elastic element includes a lower connecting groove formed at the bottom of the diverter, a connecting block is rotatably installed in the lower connecting groove, and a spring is installed at one end of the connecting block. A slider is rotatably connected to one end of the spring. A sliding groove is formed at the bottom of the adjusting plate for the slider to slide. The adjustment plate can be easily rotated and adjusted by the cooperation of the slider and the sliding groove.

[0008] Preferably, the diversion frame is further provided with a tamping assembly, which includes an installation cavity inside the diversion frame and a recess on the top of the diversion frame. A lifting plate is provided in the recess, and a tamping head is installed on the top of the lifting plate. An electric push rod is provided in the installation cavity, and the telescopic end of the electric push rod extends into the recess and is fixedly connected to the bottom of the lifting plate.

[0009] Preferably, the crushing assembly includes two crushing rollers that can rotate in opposite directions, and fixed teeth fixed on both sides of the inner wall of the crushing box.

[0010] Preferably, the crushing assembly further includes a power component that drives the two crushing rollers to rotate synchronously. The power component includes a detachable outer cover mounted on the side wall of the crushing box. One end of each of the two crushing rollers extends into the outer cover and is equipped with meshing gears. A motor is fixed on the outer wall of the outer cover, and the main shaft of the motor extends into the outer cover and is connected to one end of one of the crushing rollers. The outer cover protects the two gears and ensures stable transmission of the two gears.

[0011] Compared with the prior art, the present invention has the following advantages: This application incorporates a diversion component within the crushing chamber. This component guides the old sand from both sides through the feeding channels onto the crushing component for crushing, thereby altering the flow direction of the old sand and increasing its flow path. This diversion facilitates the uniform falling of the old sand, preventing it from accumulating on the crushing component and causing uneven crushing. Furthermore, the diversion component is equipped with a feed adjustment mechanism. An adjustment plate automatically rotates and adjusts according to gravity, allowing for adaptive adjustment of the feeding channel size. This further enhances the uniform crushing of the old sand and improves the crushing effect. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure when the feed adjustment mechanism is connected to the flow divider; Figure 4 This is a cross-sectional view of the feed adjustment mechanism connected to the flow divider. In the diagram: 1. Crushing box; 2. Feed hopper; 3. Discharge hopper; 4. Diverter frame; 41. Diverter section; 5. Tamping assembly; 51. Electric push rod; 52. Lifting plate; 53. Tamping head; 6. Feed adjustment mechanism; 61. Adjusting plate; 62. Rotating block; 63. Spring; 64. Sliding block; 65. Slide groove; 66. Connecting block; 67. Lower connecting groove; 7. Crushing roller; 8. Motor; 9. Gear; 10. Outer cover. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-4 As shown, a coarse crusher for used sand includes a crushing box 1, a feed hopper 2 at the top of the crushing box 1, a discharge hopper 3 at the bottom, and a crushing assembly for crushing used sand inside the crushing box 1. It also includes: The diversion assembly includes a diversion frame 4 fixed inside the crushing box 1. The top of the diversion frame 4 is curved upward to form a diversion section 41, and a discharge channel is formed between both sides of the diversion frame 4 and the inner wall of the crushing box 1. The crushing assembly is located below the diversion frame 4. The feed adjustment mechanism 6 includes an adjustment plate 61 rotatably connected to both sides of the diverter 4. The adjustment plate 61 is inclined in the feed channel, and there is a gap between the side of the adjustment plate 61 away from the diverter 4 and the inner wall of the crushing box 1. The adjustment plate 61 is also connected to an elastic element that drives it to rotate and reset. Specifically, upper connecting grooves are provided on both sides of the diverter 4, and rotating blocks 62 are symmetrically installed on one side of each of the two adjustment plates 61. The rotating blocks 62 are rotatably installed in the upper connecting grooves through a rotating shaft.

[0016] Specifically, regarding the aforementioned elastic element, such as Figure 3 and Figure 4 As shown, the elastic element includes a lower connecting groove 67 opened at the bottom of the diverter 4, a connecting block 66 is rotatably installed in the lower connecting groove 67, and a spring 63 is installed at one end of the connecting block 66. A slider 64 is rotatably connected to one end of the spring 63. A sliding groove 65 is opened at the bottom of the adjusting plate 61 for the slider 64 to slide.

[0017] When crushing old sand, the old sand can be added into the crushing box 1 through the feed hopper 2, and then crushed by the crushing components. After crushing, the old sand is discharged through the discharge hopper 3, thus completing the crushing process of old sand and facilitating the recycling of old sand. When old sand is added into the crushing box 1, it falls onto the diversion frame 4. At this time, the old sand is guided to the feeding channels on both sides of the diversion frame 4 by the diversion part 41 on the diversion frame 4, and falls onto the crushing component through the feeding channels. This achieves the diversion of old sand, thereby changing the flow direction of old sand and increasing the flow of old sand. This facilitates the uniform falling of old sand and avoids the old sand from accumulating on the crushing component, which would result in uneven crushing. This is conducive to the uniform crushing of old sand and improves the crushing effect. Furthermore, when the diverter 4 diverts the old sand, the old sand falls onto the inclined adjusting plate 61 and, under the guiding action of the adjusting plate 61, falls onto the crushing component through the intermittent points. At the same time, when a large amount of old sand accumulates on the adjusting plate 61, the adjusting plate 61 is subjected to gravity and rotates downward through the rotating block 62, pressing down the spring 63, which increases the gap between one side of the adjusting plate 61 and the inner wall of the crushing box 1, so that the old sand can be quickly discharged onto the crushing component. As the old sand gradually decreases, the gravity on the adjusting plate 61 weakens. At this time, the spring 63 will push the adjusting plate 61 to rotate upward through the cooperation of the slider 64 and the groove 65, which reduces the gap between one side of the adjusting plate 61 and the inner wall of the crushing box 1, so that a small amount of old sand falls slowly. Thus, the adjusting plate 61 can automatically rotate and adjust according to the magnitude of gravity, which can realize adaptive adjustment of the feed amount, further achieving uniform crushing of old sand and improving the crushing effect.

[0018] Meanwhile, regarding how the aforementioned crushing components crush the old sand, such as... Figure 2 As shown, the crushing assembly includes two crushing rollers 7 that can rotate in opposite directions, and fixed teeth fixed on both sides of the inner wall of the crushing box 1.

[0019] Furthermore, the crushing assembly also includes a power component that drives the two crushing rollers 7 to rotate synchronously. The power component includes a detachable outer cover 10 mounted on the side wall of the crushing box 1. One end of each of the two crushing rollers 7 extends into the outer cover 10 and is equipped with meshing gears 9. A motor 8 is fixed on the outer wall of the outer cover 10, and the main shaft of the motor 8 extends into the outer cover 10 and is connected to one end of one of the crushing rollers 7.

[0020] When the crushing component crushes the old sand, the motor 8 drives one of the crushing rollers 7 to rotate. At the same time, the two meshing gears 9 drive the other crushing roller 7 to rotate synchronously, so that the two crushing rollers 7 rotate towards each other, thereby crushing the old sand. The outer cover 10 protects the two gears 9 to prevent debris from getting stuck between the two gears 9, thus ensuring the stable transmission of the two gears 9.

[0021] In another embodiment, such as Figure 2 and Figure 4As shown, the diversion frame 4 is also provided with a tamping component 5, and the tamping component 5 includes an installation cavity opened inside the diversion frame 4 and a recessed cavity opened on the top of the diversion frame 4. A lifting plate 52 is provided in the recessed cavity, and a tamping head 53 is installed on the top of the lifting plate 52. An electric push rod 51 is provided in the installation cavity, and the telescopic end of the electric push rod 51 extends into the recessed cavity and is fixedly connected to the bottom of the lifting plate 52.

[0022] When the old sand is fed into the crushing box 1 through the feed hopper 2, the feed hopper 2 temporarily stores the old sand. After the old sand on the diversion frame 4 falls down, the old sand temporarily stored in the feed hopper 2 falls back onto the diversion frame 4. At this time, the lifting plate 52 can be driven to rise and fall by the electric push rod 51. Then the lifting plate 52 drives the tamping head 53 to rise and fall, so that the tamping head 53 continuously inserts into the feed hopper 2 to tamp the old sand, thereby promoting the fall of the old sand, facilitating the feeding of the coarse crusher, and helping to achieve efficient crushing of the old sand.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A used sand coarse breaker, comprising a breaking box (1), the top of which is provided with a feeding hopper (2), the bottom of which is provided with a discharging hopper (3), and the inside of which is provided with a breaking assembly for breaking the used sand, characterized in that, It also includes: The diversion assembly includes a diversion frame (4) fixed inside the crushing box (1). The top of the diversion frame (4) is curved upward to form a diversion section (41), and a feeding channel is formed between both sides of the diversion frame (4) and the inner wall of the crushing box (1). The crushing assembly is located below the diversion frame (4). The feed adjustment mechanism (6) includes an adjustment plate (61) rotatably connected to both sides of the diverter (4). The adjustment plate (61) is inclined in the feed channel, and there is a gap between the side of the adjustment plate (61) away from the diverter (4) and the inner wall of the crushing box (1). The adjustment plate (61) is also connected to an elastic element that drives it to rotate and reset.

2. A spent sand coarse breaker according to claim 1, characterized in that: The diverter (4) has upper connecting slots on both sides, and rotating blocks (62) are symmetrically installed on one side of the two adjusting plates (61), and the rotating blocks (62) are rotatably installed in the upper connecting slots via rotating shafts.

3. A spent sand coarse breaker according to claim 1, characterized in that: The elastic element includes a lower connecting groove (67) opened at the bottom of the diverter (4), a connecting block (66) is rotatably installed in the lower connecting groove (67), and a spring (63) is installed at one end of the connecting block (66). A slider (64) is rotatably connected to one end of the spring (63), and a sliding groove (65) for the slider (64) to slide is opened at the bottom of the adjusting plate (61).

4. A spent sand coarse breaker according to claim 1, characterized in that: The diversion frame (4) is also provided with a tamping assembly (5), and the tamping assembly (5) includes an installation cavity opened inside the diversion frame (4) and a recessed cavity opened on the top of the diversion frame (4). A lifting plate (52) is provided in the recessed cavity, and a tamping head (53) is installed on the top of the lifting plate (52). An electric push rod (51) is provided in the installation cavity, and the telescopic end of the electric push rod (51) extends into the recessed cavity and is fixedly connected to the bottom of the lifting plate (52).

5. A spent sand coarse breaker according to claim 1, characterized in that: The crushing assembly includes two crushing rollers (7) that can rotate in opposite directions, and fixed teeth fixed on both sides of the inner wall of the crushing box (1).

6. A spent sand coarse breaker according to claim 5, characterized in that: The crushing assembly also includes a power component that drives the two crushing rollers (7) to rotate synchronously. The power component includes a detachable outer cover (10) installed on the side wall of the crushing box (1). One end of each of the two crushing rollers (7) extends into the outer cover (10) and is equipped with meshing gears (9). A motor (8) is fixed on the outer wall of the outer cover (10), and the main shaft of the motor (8) extends into the outer cover (10) and is connected to one end of one of the crushing rollers (7).

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