Nodular cast iron casting cooling device

Abstract

The invention discloses a nodular cast iron casting cooling device which structurally comprises a buffer room, an opening and closing door, a cooling device, a ventilation top and an observation window, the opening and closing door is connected with the buffer room, the ventilation top and the buffer room are of an integrated structure, the observation window is installed on the side face of the buffer room, and the cooling device is located in the buffer room; the cooling device comprises a sealing door, a control set, an inclined door, a grabbing clamp, a bracket, a pre-placing plate, a cooling channel, a spraying set and a connecting pipe, the sealing door and the inclined door are installed at the head end and the tail end of the cooling channel correspondingly, self-adaptive supporting of the spherical casting is achieved through the supporting set, and by means of the gravity of the casting, a limiting frame slides downwards along a supporting frame and compresses a spring; in the process, a plurality of supporting balls can be self-adaptive to the ball contours to jointly form a concave point contact support, so that the rolling problem of the balls in the conveying and cooling process is avoided, the position of a casting on the bracket is ensured to be consistent, and subsequent uniform and symmetrical cooling treatment is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of castings, and more specifically, relates to a cooling device for ductile iron castings. Background Technology

[0002] The cooling device for ductile iron controls the cooling rate and uniformity of the casting from the pouring temperature to room temperature. This is not a simple cooling process, but a key quality control link in the production of ductile iron.

[0003] When spherical castings are placed on a general conveyor belt for cooling, the shape of the spherical castings themselves and the vibration during the conveying process make it difficult to effectively fix the castings. They are more likely to roll and shift, which can easily cause scratch damage between the castings and the side walls of the equipment. Furthermore, the uncontrollable cooling posture can lead to uneven cooling rates in different parts, affecting the cooling effect. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention provides a cooling device for ductile iron castings, the purpose and effectiveness of which are achieved through the following specific technical means:

[0005] Its structure includes a buffer room, an opening and closing door, a cooling device, a ventilated roof, and an observation window. The opening and closing door is connected to the buffer room, the ventilated roof and the buffer room are an integrated structure, the observation window is installed on the side of the buffer room, and the cooling device is located inside the buffer room.

[0006] The cooling device includes a sealing door, a control group, a slanted door, a gripper, a bracket, a pre-release plate, a cooling channel, a spray group, and a connecting pipe. The sealing door and the slanted door are respectively installed at the beginning and end of the cooling channel. The gripper is connected to the control group and is movable. The bracket is installed inside the cooling channel. The connecting pipe is installed inside the cooling channel. The spray group is connected to the connecting pipe. The pre-release plate is fixed to the surface of the cooling channel. When the buffer house auxiliary casting comes out of the cooling device, it is subjected to temperature buffering and adaptation before the door is opened and closed.

[0007] As a further improvement of the present invention, the bracket includes a connecting frame, a buckle, a support group, and a locking rod. The buckle and the locking rod are respectively installed on the two side surfaces of the connecting frame. The support group is connected to the connecting frame. Each group of buckles and locking rods is connected in a cooperative manner.

[0008] As a further improvement of the present invention, the support assembly includes a support frame, a converging port, a spring, a through pipe, a limiting frame, and a support ball. The converging port and the through pipe are an integrated structure. The support frame is fixed to the inner surface of the through pipe. The limiting frame and the support ball are an integrated structure. The spring is installed between the limiting frame and the support frame. The support ball forms a point contact support with the casting.

[0009] As a further improvement of the present invention, the surface of the pre-layout plate is provided with uniform protrusions to prevent the placed casting from rolling. The bracket is connected to the conveyor chain plate for circulation. The spray group is provided with twelve spray nozzles evenly distributed on the connecting pipe. The pre-layout plate prevents the cooled casting from being temperature buffered in the buffer room.

[0010] As a further improvement of the present invention, the supporting ball is a spherical structure, the supporting frame is a cross-shaped structure, the converging port is a trumpet-shaped structure, wider at the bottom and narrower at the top to assist gas flow, the spring is made of high-temperature resistant alloy, the through pipe guides the gas to flow along the supporting ball to the casting, and the supporting assembly will sink and expand according to the force of the casting to provide stable support for the casting.

[0011] As a further improvement of the present invention, the spray assembly includes a locking block, a through port, and a nozzle. The locking block is fixed to the surface of the connecting pipe, the through port connects the nozzle and the connecting pipe, and the sealing door and the oblique opening door auxiliary casting are processed in a sealed state inside the cooling channel.

[0012] As a further improvement of the present invention, the nozzle includes a rotating frame, an atomizing port, a guide channel, a spherical shell, and a scraper. The rotating frame is sleeved on the surface of the spherical shell, the guide channel and the spherical shell are an integral structure, the atomizing port passes through the spherical shell and is connected to the through port, the rotating frame and the scraper are an integral structure, and the scraper is an arc-shaped scraper that abuts against the surface of the spherical shell.

[0013] As a further improvement of the present invention, the guide channel guides the gas to converge and push the scraper, the scraper abuts against the surface of the spherical shell to scrape, and the atomizing port inputs water atomized.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The support assembly enables adaptive support for the spherical casting. Utilizing the casting's own weight, the limiting frame slides down the support frame and compresses the spring. This process allows multiple support balls to adapt to the spherical contour, forming a concave point contact support. This avoids the rolling problem of the sphere during transportation and cooling, and ensures that the casting remains in the same position on the bracket, facilitating subsequent uniform and symmetrical cooling.

[0016] Second, while the support group provides stable support, the cooling airflow acts directly on the bottom of the casting along the surface of the support ball, so that the entire surface of the casting can be uniformly cooled, avoiding the problem of uneven cooling when the casting is placed against the conveyor surface.

[0017] Third, the scraper continuously scrapes the surface of the sphere, preventing the adhesion and accumulation of scale, achieving complete synchronization with the spraying operation, and ensuring the long-term unobstructed flow of the atomizing nozzle and the stability of the atomization effect.

[0018] 4. After the casting has been cooled through the cooling channel, it is first placed in the buffer room space of the pre-placed plate to buffer and adapt to the temperature, so as to avoid the quality damage of the casting due to sudden temperature change. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a cooling device for ductile iron castings according to the present invention.

[0020] Figure 2 This is a schematic diagram of the left cross-sectional structure of a cooling device for ductile iron castings according to the present invention.

[0021] Figure 3 This is a schematic diagram of the right-side cross-sectional structure of a cooling device for ductile iron castings according to the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of a bracket according to the present invention.

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of a bracket according to the present invention.

[0024] Figure 6 This is a schematic diagram of the structure of a spray assembly according to the present invention.

[0025] Figure 7 This is a schematic diagram of the structure of a nozzle according to the present invention.

[0026] In the diagram: Buffer house-1, Opening and closing door-2, Cooling device-3, Ventilation roof-4, Observation window-5, Sealed door-31, Control group-32, Slanted door-33, Grab clamp-34, Bracket-35, Pre-placement plate-36, Cooling channel-37, Spray group-38, Connecting pipe-39, Connecting frame-51, Buckle-52, Support group-53, Clamp rod-54, Support frame-41, Converging port-42, Spring-43, Through pipe-44, Limiting frame-45, Support ball-46, Clamp block-81, Through port-82, Nozzle-83, Rotating frame-71, Atomizing port-72, Guide channel-73, Ball shell-74, Scraper frame-75. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] Example 1:

[0029] As attached Figure 1 To be continued Figure 5 As shown:

[0030] The present invention provides a cooling device for ductile iron castings, the structure of which includes a buffer chamber 1, an opening and closing door 2, a cooling device 3, a ventilated top 4, and an observation window 5. The opening and closing door 2 is connected to the buffer chamber 1, the ventilated top 4 and the buffer chamber 1 are an integrated structure, the observation window 5 is installed on the side of the buffer chamber 1, and the cooling device 3 is located inside the buffer chamber 1.

[0031] The cooling device 3 includes a sealing door 31, a control group 32, a slanted door 33, a gripper 34, a bracket 35, a pre-release plate 36, a cooling channel 37, a spray group 38, and a connecting pipe 39. The sealing door 31 and the slanted door 33 are respectively installed at the beginning and end of the cooling channel 37. The gripper 34 is connected to the control group 32 and is movable. The bracket 35 is installed inside the cooling channel 37. The connecting pipe 39 is installed inside the cooling channel 37. The spray group 38 is connected to the connecting pipe 39. The pre-release plate 36 is fixed to the surface of the cooling channel 37. When the auxiliary casting of the buffer chamber 1 comes out of the cooling device 3, it is subjected to temperature buffering and adaptation before the opening and closing door 2 is opened. The ventilated top 4 is provided with uniform ventilation holes, so that the temperature of the buffer chamber 1 and the cooling device 3 will decrease gently.

[0032] The bracket 35 includes a connecting frame 51, a buckle 52, a support group 53, and a clamping rod 54. The buckle 52 and the clamping rod 54 are respectively installed on the two sides of the connecting frame 51. The support group 53 is connected to the connecting frame 51. The buckle 52 and the clamping rod 54 are connected in a cooperative manner. The claw of the gripper 34 can flexibly grip on the support group 53.

[0033] The support assembly 53 includes a support frame 41, a converging port 42, a spring 43, a through pipe 44, a limiting frame 45, and a support ball 46. The converging port 42 and the through pipe 44 are an integrated structure. The support frame 41 is fixed to the inner surface of the through pipe 44. The limiting frame 45 and the support ball 46 are an integrated structure. The spring 43 is installed between the limiting frame 45 and the support frame 41. The support ball 46 forms point contact support with the casting. The limiting frame 45 moves up and down along the support frame 41.

[0034] The pre-placement plate 36 has uniformly distributed protrusions on its surface to prevent the casting from rolling. The bracket 35 is connected to the conveyor chain plate for circulation. The spray group 38 has twelve spray nozzles evenly distributed on the connecting pipe 39. The pre-placement plate 36 prevents the cooled casting from being temperature buffered in the buffer chamber 1. After the opening and closing door 2 is opened, the robot arm of the next process will grab the casting on the pre-placement plate 36 and move it to the next process.

[0035] The supporting ball 46 is a spherical structure, the supporting frame 41 is a cross-shaped structure, the converging port 42 is a trumpet-shaped structure, wider at the bottom and narrower at the top to assist gas flow, the spring 43 is made of high-temperature resistant alloy, the through pipe 44 guides the gas to flow along the supporting ball 46 to the casting, and the supporting group 53 will sink and expand according to the force of the casting to provide stable support for the casting. Each group of supporting balls 46 has fifty-six balls that are evenly spaced.

[0036] The specific usage and function of this embodiment are as follows:

[0037] In this invention, a robotic arm picks up the spherical casting requiring cooling and places it on a bracket 35 within the cooling channel 37. The casting's own weight acts on the support assembly 53, with the support ball 46 forming point contact support with the casting. Simultaneously, the limiting frame 45 slides downward along the support frame 41 to compress the spring 43, ensuring the casting is stably placed within the support structure and effectively preventing it from rolling. Subsequently, the sealing door 31 and the angled door 33 close, creating a sealed cooling space within the cooling channel 37. At this time, the bracket 35 moves at a constant speed within the cooling channel 37 under the drive of the circulating chain plate. During this process, the spray assembly... The atomized cooling generated by 38 works in conjunction with the forced air cooling in the cooling channel 37 to uniformly cool the casting. When the casting is placed on the support group 53, the cooling airflow enters the through pipe 44 through the converging port 42 and finally escapes along the surface of the support ball 46, directly acting on the bottom of the casting. After the cooling process is completed, the slanted door 33 opens, and the control group 32 drives the gripper 34 to grab the casting and transfer it to the pre-placement plate 36 in the buffer chamber 1 for temperature buffering. After buffering is completed, the opening and closing door 2 opens and the robot arm of the next process grabs the buffered casting and enters the subsequent processing stage.

[0038] Example 2:

[0039] As attached Figure 6 To be continued Figure 7 As shown:

[0040] The spray assembly 38 includes a locking block 81, a through-hole 82, and a nozzle 83. The locking block 81 is fixed to the surface of the connecting pipe 39. The through-hole 82 connects the nozzle 83 and the connecting pipe 39. The sealing door 31 and the oblique opening door 33 assist the casting in being processed in a sealed state inside the cooling channel 37. The gripper 34 is a six-jaw gripper that can firmly grip the casting.

[0041] The nozzle 83 includes a rotating frame 71, an atomizing port 72, a guide channel 73, a spherical shell 74, and a scraper 75. The rotating frame 71 is fitted onto the surface of the spherical shell 74. The guide channel 73 and the spherical shell 74 are an integral structure. The atomizing port 72 penetrates the spherical shell 74 and is connected to the through port 82. The rotating frame 71 and the scraper 75 are an integral structure. The scraper 75 is an arc-shaped scraper that rests against the surface of the spherical shell 74. The rotating frame 71 assists the scraper 75 to rotate smoothly.

[0042] The guide channel 73 guides the gas to converge and push the scraper 75. The scraper 75 scrapes against the surface of the spherical shell 74. The atomizing port 72 atomizes and inputs water. The rotating frame 71 has a circular structure.

[0043] The specific usage and function of this embodiment are as follows:

[0044] In this invention, during the cooling process of the casting inside the cooling channel 37, the spray group 38 is activated. The cooling medium is introduced through the connecting pipe 39 and transported to the atomizing port 72 through the port 82 to achieve atomization and spraying. At the same time, part of the airflow generated by the spray is collected through the guide channel 73, thereby driving the scraper 75 to rotate. The scraper 75 continuously scrapes the surface of the spherical shell 74, thereby effectively preventing the scale generated during the atomization process from adhering and accumulating on the surface of the spherical shell 74, avoiding the clogging problem caused by scale.

[0045] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solutions described in this invention, or by designing similar technical solutions by those skilled in the art under the inspiration of the technical solutions described in this invention, falls within the protection scope of this invention.

Claims

1. A ductile iron casting cooling device, which structure comprises a buffer house (1), an opening and closing door (2), a cooling device (3), a breathable roof (4) and an observation window (5), the opening and closing door (2) is connected with the buffer house (1), the breathable roof (4) is an integrated structure with the buffer house (1), the observation window (5) is installed on the side of the buffer house (1), and the cooling device (3) is located in the buffer house (1). The cooling device (3) comprises a sealing door (31), a control group (32), an inclined opening door (33), a grab (34), a bracket (35), a pre-discharging plate (36), a cooling channel (37), a spraying group (38) and a connecting pipe (39), the sealing door (31) and the inclined opening door (33) are respectively installed at the two ends of the cooling channel (37), the grab (34) is connected with the control group (32) and is movable, the bracket (35) is installed in the cooling channel (37), the connecting pipe (39) is installed in the cooling channel (37), the spraying group (38) penetrates through the connecting pipe (39), and the pre-discharging plate (36) is fixed on the surface of the cooling channel (37). The bracket (35) comprises a connecting bracket (51), a buckle (52), a support group (53) and a clamping rod (54), the buckle (52) and the clamping rod (54) are respectively installed on the surfaces of the two sides of the connecting bracket (51), and the support group (53) is connected with the connecting bracket (51).

2. A device for cooling a spheroidal graphite cast iron casting according to claim 1, characterized in that: The support group (53) comprises a support bracket (41), a converging port (42), a spring (43), a through pipe (44), a limiting bracket (45) and a supporting ball (46), the converging port (42) and the through pipe (44) are an integrated structure, the support bracket (41) is fixed on the inner ring surface of the through pipe (44), the limiting bracket (45) and the supporting ball (46) are an integrated structure, and the spring (43) is installed between the limiting bracket (45) and the support bracket (41).

3. A device for cooling a spheroidal graphite cast iron casting according to claim 2, characterized in that: Uniform bumps are arranged on the surface of the pre-discharging plate (36) to prevent the castings from rolling, the bracket (35) is connected with a conveying chain plate to circulate, and the spraying group (38) is provided with twelve uniformly distributed spraying groups on the connecting pipe (39).

4. The device for cooling a spheroidal graphite cast iron casting according to claim 1, characterized in that: The supporting ball (46) is a spherical structure, the support bracket (41) is a cross-shaped structure, the converging port (42) is a horn-shaped structure, the lower part is wide and the upper part is narrow to assist gas flow, the spring (43) is made of a high-temperature-resistant alloy, and the through pipe (44) guides the gas to flow along the supporting ball (46) to the castings.

5. A device for cooling a spheroidal graphite cast iron casting according to claim 3, characterized in that: The spraying group (38) comprises a clamping block (81), a through port (82) and a nozzle (83), the clamping block (81) is clamped on the surface of the connecting pipe (39), and the through port (82) connects the nozzle (83) and the connecting pipe (39).

6. A device for cooling a ductile iron casting according to claim 1, characterized in that: ​ 7. A device for cooling a spheroidal graphite cast iron casting according to claim 6, characterized in that: The nozzle (83) comprises a rotating frame (71), an atomizing port (72), a guide path (73), a spherical shell (74), and a scraping frame (75), the rotating frame (71) is sleeved on the surface of the spherical shell (74), the guide path (73) is an integrated structure with the spherical shell (74), the atomizing port (72) penetrates through the spherical shell (74) and is connected with the through port (82), and the rotating frame (71) is an integrated structure with the scraping frame (75).

8. A device for cooling a spheroidal graphite cast iron casting according to claim 7, characterized in that: The guide path (73) guides the gas gathering to push the scraping frame (75), and the scraping frame (75) is abutted against the surface of the spherical shell (74) to scrape.

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