Rapid cooling device and technology for nodular cast iron well lid

Abstract

The invention belongs to the technical field of nodular cast iron well lid production, and particularly relates to a rapid cooling device and technology for a nodular cast iron well lid. The device is mainly composed of a cooling water tank, a rotating roller type spraying assembly and an overturning assembly, for the well lid casting composed of a shaft, an annular end plate, a reinforcing block, a well lid plate and an anti-skid pattern, the rotating roller type spraying assembly is used for providing rolling support for the well lid casting, and meanwhile cooling water in the cooling water tank is sucked to rapidly cool and spray the well lid casting; the overturning assembly is used for driving the manhole cover casting to rotate in the circumferential direction, sprayed cooling water can be accumulated at the bottom of an inner cavity of the manhole cover casting and form a water accumulation area, the water accumulation area can greatly prolong the contact time of the cooling water and the rotating manhole cover casting, the cooling effect is improved, meanwhile, water resources can be recycled, and the environment-friendly effect is good.

Description

Technical Field

[0001] This invention belongs to the field of ductile iron manhole cover production technology, specifically relating to a rapid cooling device and process for ductile iron manhole covers. Background Technology

[0002] Ductile iron manhole covers are a type of ductile iron product. Ductile iron undergoes spheroidization and inoculation treatment to obtain spheroidal graphite, effectively improving the mechanical properties of cast iron, particularly its plasticity and toughness, resulting in strength higher than carbon steel. Its overall performance is close to that of steel. Based on its excellent properties, it has been successfully used to cast parts subject to complex stresses and requiring high strength, toughness, and wear resistance. Rapid cooling devices in ductile iron manhole cover production mainly serve to shorten cooling time and improve production efficiency, while optimizing the cooling process to reduce the risk of casting deformation and cracking.

[0003] The existing rapid cooling devices for ductile iron manhole covers have shortcomings in use. First, they cannot rotate the manhole cover during the cooling process, resulting in an unsatisfactory cooling effect. Second, they cannot circulate and filter the cooling water, leading to significant water consumption.

[0004] In view of this, the inventors hope to optimize and improve the rapid cooling device of existing ductile iron manhole covers to enhance its cooling effect and enable the recycling of water resources. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned problems existing in the conventional technology and to provide a rapid cooling device and process for ductile iron manhole covers.

[0006] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution:

[0007] This invention provides a rapid cooling device for ductile iron manhole covers, comprising:

[0008] A cooling water tank, wherein the cooling water tank is used to provide cooling water;

[0009] A rotary roller spray assembly is disposed on one side of the area above the cooling water tank. The rotary roller spray assembly is used to provide movable support for the manhole cover casting and to draw cooling water and spray it on the inside of the manhole cover casting for rapid cooling.

[0010] A flipping assembly is located on the other side of the area above the cooling water tank. The flipping assembly is used to drive the manhole cover casting to perform a circumferential flipping action and to facilitate axial displacement action for loading and unloading.

[0011] Furthermore, in the aforementioned rapid cooling device for ductile iron manhole covers, the manhole cover casting is made of ductile iron material. The manhole cover casting includes a manhole cylinder. The open end of the manhole cylinder is provided with an annular end plate. Several reinforcing blocks are provided between the annular end plate and the outer wall of the manhole cylinder. The closed end of the manhole cylinder is provided with a manhole cover plate. The center of the manhole cover plate is provided with an anti-slip pattern. The area of ​​the manhole cover plate surrounding the anti-slip pattern is a smooth surface.

[0012] Furthermore, in the aforementioned rapid cooling device for ductile iron manhole covers, the cooling water tank includes a tank body, the inner cavity of which is divided into a sewage area and a clean water area by a filter plate, and a cooler for cooling the water is installed in the tank body.

[0013] Furthermore, in the aforementioned rapid cooling device for ductile iron manhole covers, the rotary spray assembly includes a base plate, a first push rod, a first water guide pipe, a turntable, a second water guide pipe, a rotary roller, nozzles, a pumping pipe, and a suction pump. The first push rod is mounted on the base plate, and the movable end of the first push rod is connected to one end of the first water guide pipe via a coupling. The other end of the first water guide pipe is connected to the turntable. Several second water guide pipes are mounted circumferentially on the turntable. A rotary roller is sleeved on the outer end of each second water guide pipe. The turntable has an internal conduit for connecting the second water guide pipes with the first water guide pipe. A cavity is provided on the rotary roller near the outlet of the second water guide pipe. Several nozzles are embedded around the cavity on the rotary roller. The suction pump is placed in the clean water area of ​​the cooling water tank and is connected to the first water guide pipe via a pumping pipe.

[0014] Furthermore, in the aforementioned rapid cooling device for ductile iron manhole covers, each of the rotating rollers together constitutes a rolling support system that matches the inner diameter of the manhole barrel in the manhole cover casting, and a limiting structure to prevent axial displacement is provided between the rotating rollers and the second water guide pipe.

[0015] Furthermore, in the aforementioned rapid cooling device for ductile iron manhole covers, the flipping assembly includes a grooved plate, a second push rod, a rotary joint, a support shaft, a rotating plate, a flipping motor, a belt drive, an annular suction cup, and an adsorption pad. The grooved plate is equipped with the second push rod and the flipping motor. The movable end of the second push rod is connected to one end of the support shaft via the rotary joint. The other end of the support shaft is equipped with a rotating plate. The output shaft of the flipping motor is connected to the support shaft via a belt drive. An annular suction cup is fixed to the outer wall of the rotating plate. An adsorption pad is installed at the adsorption end of the annular suction cup to facilitate contact with the smooth surface of the manhole cover.

[0016] Furthermore, in the aforementioned rapid cooling device for ductile iron manhole covers, the belt drive component includes a driving pulley, a driven pulley, and a drive belt sleeved between them. The driven pulley is provided with movable support by a grooved plate. The driven pulley is sleeved on the outside of a supporting shaft. The outer surface of the supporting shaft is provided with a keyway, and the inner wall of the driven pulley is provided with a protruding key that mates with the keyway.

[0017] This invention also provides a rapid cooling process for ductile iron manhole covers, based on the aforementioned rapid cooling device for ductile iron manhole covers, comprising the following steps:

[0018] S1. The manhole cover casting is removed from the casting mold by a robotic arm and transferred to the top of the cooling water tank. The first push rod in the roller spray assembly moves, so that each roller enters the interior of the manhole cover casting and provides rolling support for it.

[0019] S2. The second push rod in the flipping assembly moves, causing the heat-resistant adsorption pad to press against the outside of the manhole cover plate of the manhole cover casting. The flipping motor drives the support shaft to rotate through the belt drive component. The support shaft drives the annular suction cup and the manhole cover casting it adsorbs to rotate through the rotating plate.

[0020] S3. The suction pump in the rotary roller spray assembly starts and supplies cooling water to the nozzles through the water supply system. The nozzles quickly spray and cool the inner wall of the manhole cover casting. The cooling water will accumulate at the bottom of the inner cavity of the manhole cover casting and form a water accumulation area of ​​a certain thickness. The water accumulation area will be discharged outward due to gravity. By controlling the spray volume and drainage volume, the water accumulation area is maintained at a certain thickness.

[0021] The beneficial effects of this invention are:

[0022] The device of this invention is reasonably designed and mainly consists of a cooling water tank 2, a rotating roller spray assembly 3, and a tilting assembly 4. For the manhole cover casting 1, which is composed of a well cylinder 101, an annular end plate 102, a reinforcing block 103, a manhole cover plate 104, and an anti-slip pattern 105, the rotating roller spray assembly 3 provides rolling support for the manhole cover casting 1, while simultaneously drawing cooling water from the cooling water tank 2 to rapidly cool and spray the manhole cover casting 1. The tilting assembly 4 drives the manhole cover casting 1 to rotate circumferentially. The sprayed cooling water will accumulate at the bottom of the inner cavity of the manhole cover casting and form a water accumulation area. The water accumulation area can significantly extend the contact time between the cooling water and the rotating manhole cover casting, which is beneficial to improving the cooling effect. At the same time, water resources can be recycled, resulting in good environmental protection.

[0023] Of course, any product implementing this invention does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the manhole cover casting in this invention;

[0027] Figure 3 This is a schematic diagram of the cooling water tank in this invention;

[0028] Figure 4 This is a schematic diagram of the structure of the rotary roller spray assembly in this invention;

[0029] Figure 5 This is a schematic diagram of the flipping component in this invention;

[0030] Figure 6 This is a schematic diagram of the structure of the adsorption pad in this invention;

[0031] In the attached diagram, the component numbers are as follows:

[0032] 1-Manhole cover casting, 101-Manhole barrel, 102-Annular end plate, 103-Reinforcing block, 104-Manhole cover plate, 105-Anti-slip pattern;

[0033] 2-Cooling water tank, 201-Tank body, 202-Filter plate, 203-Refrigerator;

[0034] 3-Rotary roller spray assembly, 301-Base plate, 302-First push rod, 303-First water guide pipe, 304-Rotary disc, 305-Second water guide pipe, 306-Rotary roller, 307-Nozzle, 308-Pump pipe, 309-Suction pump;

[0035] 4-Flipping assembly, 401-Slotted plate, 402-Second push rod, 403-Rotary joint, 404-Supporting shaft, 405-Rotating plate, 406-Flipping motor, 407-Belt drive component, 408-Annular suction cup, 409-Adsorption pad. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1-6 As shown, this embodiment provides a rapid cooling device for ductile iron manhole covers, including a cooling water tank 2, a rotary spray assembly 3, and a tilting assembly 4. The cooling water tank 2 provides cooling water. The rotary spray assembly 3 is located on one side of the area above the cooling water tank 2, providing movable support for the manhole cover casting 1 and drawing cooling water to spray onto the inside of the casting 1 for rapid cooling. The tilting assembly 4 is located on the other side of the area above the cooling water tank 2, driving the manhole cover casting 1 to perform a circumferential tilting motion and facilitating axial displacement for loading and unloading.

[0038] In this embodiment, the manhole cover casting 1 is made of ductile iron. The manhole cover casting 1 includes a manhole casing 101. An annular end plate 102 is provided at the open end of the manhole casing 101. Several reinforcing blocks 103 are provided between the annular end plate 102 and the outer wall of the manhole casing 101. A manhole cover plate 104 is provided at the closed end of the manhole casing 101. An anti-slip pattern 105 is provided at the center of the manhole cover plate 104, and the area of ​​the manhole cover plate 104 surrounding the anti-slip pattern 105 is a smooth surface.

[0039] In this embodiment, the cooling water tank 2 includes a tank body 201. The inner cavity of the tank body 201 is divided into a sewage area and a clean water area by a filter plate 202. A cooler 203 for cooling the water is installed in the tank body 201.

[0040] In this embodiment, the rotary spray assembly 3 includes a base plate 301, a first push rod 302, a first water guide pipe 303, a turntable 304, a second water guide pipe 305, a rotary roller 306, nozzles 307, a pump pipe 308, and a suction pump 309. The first push rod 302 is mounted on the base plate 301. The movable end of the first push rod 302 is connected to one end of the first water guide pipe 303 via a coupling. The other end of the first water guide pipe 303 is connected to the turntable 304. A plurality of second water guide pipes 305 are circumferentially mounted on the turntable 304. The outer end of each second water guide pipe 305 is fitted with a rotary roller 306. The turntable 304 has an internal conduit for connecting the second water guide pipes 305 to the first water guide pipe 303. The rotary roller 306 has a cavity near the outlet of the second water guide pipe 305, and a plurality of nozzles 304 are embedded and mounted around the cavity of the rotary roller 306. The suction pump 309 is placed in the clean water area of ​​the cooling water tank, and the output end of the suction pump 309 is connected to the side end of the first water guide pipe 303 via the pump water pipe 308.

[0041] In this embodiment, each of the rotating rollers 306 together constitutes a rolling support system that matches the inner diameter of the well barrel 101 in the well cover casting 1, and a limiting structure to prevent axial displacement is provided between the rotating rollers 306 and the second water guide pipe 305.

[0042] In this embodiment, the flipping assembly 4 includes a grooved plate 401, a second push rod 402, a rotary joint 403, a support shaft 404, a rotating plate 405, a flipping motor 406, a belt drive 407, an annular suction cup 408, and an adsorption pad 409. The second push rod 402 and the flipping motor 406 are mounted on the grooved plate 401. The movable end of the second push rod 402 is connected to one end of the support shaft 404 via the rotary joint 403, and the other end of the support shaft 404 is fitted with the rotating plate 405. The output shaft of the flipping motor 406 is connected to the support shaft 404 via the belt drive 407. An annular suction cup 408 is fixed to the outer wall of the rotating plate 405, and an adsorption pad 409 is installed at the adsorption end of the annular suction cup 408 to facilitate contact with the smooth surface of the manhole cover plate 104.

[0043] In this embodiment, the belt drive component 407 includes a driving pulley, a driven pulley, and a drive belt sleeved between the two. The driven pulley is provided with movable support by a grooved plate 401. The driven pulley is sleeved on the outside of the supporting shaft. The outer surface of the supporting shaft is provided with a keyway, and the inner wall of the driven pulley is provided with a protruding key that mates with the keyway.

[0044] This embodiment also provides a rapid cooling process for ductile iron manhole covers, including the following steps:

[0045] S1. The manhole cover casting 1 is removed from the casting mold by the robotic arm and transferred to the top of the cooling water tank 2. The first push rod 302 in the roller spray assembly 3 is activated, so that each roller enters the interior of the manhole cover casting 1 and provides rolling support for it.

[0046] S2, the second push rod in the flipping assembly 4 is activated, causing the heat-resistant adsorption pad 409 to abut against the outside of the manhole cover plate 104 of the manhole cover casting 1. The flipping motor 406 drives the support shaft 404 to rotate through the belt drive component 407. The support shaft 404 drives the annular suction cup 408 and the manhole cover casting 1 it adsorbs to rotate through the rotating plate 405.

[0047] S3. The suction pump 309 in the rotary roller spray assembly 3 starts. The suction pump 309 supplies cooling water to the nozzle 307 through the water supply system. The nozzle 307 sprays the inner wall of the manhole cover casting 1 quickly to cool it. The cooling water will accumulate at the bottom of the inner cavity of the manhole cover casting 1 and form a water accumulation area of ​​a certain thickness. The water accumulation area will be discharged outward due to gravity. By controlling the spray volume and drainage volume, the water accumulation area is maintained at a certain thickness.

[0048] A specific application of this embodiment is as follows: This device mainly consists of a cooling water tank 2, a rotating roller spray assembly 3, and a tilting assembly 4. For a manhole cover casting 1 composed of a manhole cylinder 101, an annular end plate 102, a reinforcing block 103, a manhole cover plate 104, and an anti-slip pattern 105, the rotating roller spray assembly 3 provides rolling support for the manhole cover casting 1, while simultaneously drawing cooling water from the cooling water tank 2 to rapidly cool and spray the manhole cover casting 1. The tilting assembly 4 drives the manhole cover casting 1 to rotate circumferentially. The sprayed cooling water accumulates at the bottom of the inner cavity of the manhole cover casting and forms a water accumulation area. The water accumulation area can significantly extend the contact time between the cooling water and the rotating manhole cover casting, which is beneficial to improving the cooling effect. At the same time, water resources can be recycled, resulting in good environmental protection.

[0049] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A rapid cooling device for a ductile cast iron manhole cover, characterized by, Comprise: Cooling water tank, the cooling water tank is used for providing cooling water; Roller type spray assembly, the roller type spray assembly is arranged in one side of the area above the cooling water tank, the roller type spray assembly is used for providing movable support for the manhole cover casting, and extracts cooling water and sprays it in the inside of the manhole cover casting to carry out rapid cooling; Turnover assembly, the turnover assembly is arranged in the other side of the area above the cooling water tank, the turnover assembly is used for driving the manhole cover casting to carry out circumferential overturning action, and facilitates axial displacement action of feeding and discharging.

2. The rapid cooling device for a ductile cast iron cover according to claim 1, characterized by, The manhole cover casting is cast by nodular cast iron material, the manhole cover casting includes a well cylinder, the opening end of the well cylinder is provided with an annular end plate outward, a plurality of reinforcing blocks are arranged between the annular end plate and the outer wall of the well cylinder, the closed end of the well cylinder is provided with a manhole cover plate, the center of the manhole cover plate is provided with a non-slip pattern, and the peripheral area of the non-slip pattern of the manhole cover plate is a smooth surface.

3. The rapid cooling device for a ductile cast iron cover according to claim 2, characterized by, The cooling water tank includes a water tank body, the inner cavity of the water tank body is separated into a sewage area and a clean water area by a filter plate, and a refrigerating device for cooling water is installed in the water tank body.

4. The rapid cooling device for a ductile cast iron cover according to claim 3, characterized by, The roller type spray assembly includes a base plate, a first push rod, a first water guide pipe, a rotating disc, a second water guide pipe, a rotating roller, a nozzle, a pump water pipe and a suction pump, the first push rod is installed on the base plate, the movable end of the first push rod is connected with one end of the first water guide pipe through a shaft coupling, the other end of the first water guide pipe is connected with the rotating disc, a plurality of second water guide pipes are installed on the rotating disc in the circumferential direction, the outer end of the second water guide pipe is sleeved with the rotating roller, the inner part of the rotating disc is provided with an embedded pipeline for connecting the second water guide pipe with the first water guide pipe, the rotating roller is provided with a cavity at the position close to the outlet of the second water guide pipe, a plurality of nozzles are embedded and installed around the cavity of the rotating roller, the suction pump is arranged in the clean water area of the cooling water tank, and the suction pump is communicated with the first water guide pipe through the pump water pipe.

5. The rapid cooling device for a ductile cast iron cover according to claim 4, characterized by, The rotating rollers jointly form a rolling support system matched with the inner diameter of the well cylinder of the manhole cover casting, and the rotating roller and the second water guide pipe are provided with a limiting structure for preventing axial displacement.

6. The rapid cooling device for a ductile cast iron cover according to claim 5, wherein The turnover assembly includes a groove type plate, a second push rod, a rotary joint, a support rotating shaft, a rotating plate, a turnover motor, a belt transmission member, an annular suction disc and a suction pad, the second push rod and the turnover motor are installed on the groove type plate, the movable end of the second push rod is connected with one end of the support rotating shaft through the rotary joint, the other end of the support rotating shaft is installed with the rotating plate, the output shaft of the turnover motor is transmissionally connected with the support rotating shaft through the belt transmission member, the outer wall of the rotating plate is fixed with the annular suction disc, and the suction end of the annular suction disc is installed with the suction pad which is convenient for abutting against the smooth surface of the manhole cover plate.

7. The rapid cooling device for a ductile cast iron cover according to claim 6, characterized by, The belt transmission member includes a driving pulley, a driven pulley and a transmission belt sleeved between the two, the driven pulley is movably supported by the groove type plate, the driven pulley is sleeved on the outside of the support rotating shaft, the outer surface of the support rotating shaft is provided with a key groove, and the inner hole wall of the driven pulley is provided with a protruding key matched with the key groove.

8. A process for the rapid cooling of a spheroidal graphite cast iron manhole cover, implemented by means of the rapid cooling device for spheroidal graphite cast iron manhole covers according to claim 7, characterized in that, Comprise the following steps: S1, the mechanical arm is used to take out the well lid casting from the casting mold and transfer to the upper part of the cooling water tank, the first push rod of the rotating roller type spraying assembly is actuated, so that each rotating roller enters the inside of the well lid casting and provides rolling support for it; S2, the second push rod of the turnover assembly is actuated, so that the heat-resistant adsorption pad abuts against the outside of the well lid plate of the well lid casting, the support rotating shaft is rotated by the belt transmission member of the turnover motor, and the support rotating shaft drives the annular suction disc and the well lid casting adsorbed thereby to rotate through the rotating plate; S3, the suction pump of the rotating roller type spraying assembly is started, the suction pump supplies cooling water to the nozzle through the water delivery system, the inner cavity wall of the well lid casting is quickly sprayed and cooled by the nozzle, the cooling water will accumulate at the bottom of the inner cavity of the well lid casting and form a certain thickness of the accumulated water area, the accumulated water area will be discharged outward due to gravity, and the accumulated water area is maintained at a certain thickness by controlling the spraying amount and the drainage amount.

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