Cooling device for casting well lid

By combining a heat exchange system with a heat-conducting plate and a cooling box, and using a fan convection design, the problem of uneven thermal stress caused by temperature differences on the manhole cover surface is solved, achieving uniform cooling and quality assurance of the manhole cover.

CN224087953UActive Publication Date: 2026-04-07SHANXI LIANGJIA YUEHONG CASTING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-08
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Existing cooling devices, by placing the manhole cover in cooling water or pouring cooling water onto its surface, can cause excessive temperature differences, potentially leading to uneven thermal stress on the manhole cover surface and resulting in cracks, thus affecting its quality.

Method used

A heat-conducting plate is used to transfer the temperature of the manhole cover to the cooling box for heat exchange with the circulating cooling water. The heat-conducting plate is in close contact with the box to increase the heat exchange area. Combined with the water pump circulating cooling water and fan convection, uniform cooling is achieved.

Benefits of technology

This effectively avoids cracks caused by uneven thermal stress on the manhole cover surface, ensuring the quality of the manhole cover and improving cooling efficiency.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224087953U_ABST
    Figure CN224087953U_ABST
Patent Text Reader

Abstract

The utility model relates to the field of cooling devices, in particular to a cooling device for casting a well lid, which comprises a bottom plate. The device further comprises a heat conduction plate and a cooling assembly. A water tank is fixedly connected to the upper end of the first mounting plate; a water pump is fixedly connected to the upper end of the water tank; a first connecting pipe is fixedly connected to the water outlet end of the water pump; a water inlet pipe is fixedly connected to the outer wall of the first connecting pipe; a first electromagnetic valve is arranged at the end, close to the cooling tank, of the water return pipe. Cooling water in the water tank enters the cooling tank through the water inlet pipe by starting the water pump, heat is transferred through the heat conducting plate, then the first electromagnetic valve is started to enable the cooling water to enter the water tank through the water return pipe for cooling circulation again, and the problem that cracks are generated due to uneven thermal stress on the surface of the well lid due to overlarge temperature difference is solved. And the quality is not qualified.
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Description

Technical Field

[0001] This utility model belongs to the field of cooling devices, specifically relating to a cooling device for cast manhole covers. Background Technology

[0002] Cast manhole covers are an important component of urban infrastructure, widely used in drainage, sewage pipe networks, power supply, and communications. The quality of manhole covers directly affects road safety and the long-term stable operation of municipal projects.

[0003] Existing cooling devices typically cool the manhole cover by placing it in cooling water or by pouring cooling water onto its surface. However, excessive temperature differences can cause uneven thermal stress on the manhole cover surface, leading to cracks and ultimately, substandard quality.

[0004] Therefore, a cooling device for cast manhole covers is proposed. The heat is transferred from the manhole cover to the cooling box through a heat-conducting plate, where it exchanges heat with the circulating cooling water, thereby reducing the temperature of the manhole cover and preventing cracks caused by excessive temperature difference. Utility Model Content

[0005] To overcome the problem that existing cooling devices typically cool manhole covers by placing them in cooling water or pouring cooling water onto their surface, which can lead to uneven thermal stress and cracks due to excessive temperature differences, resulting in substandard quality, a cooling device for cast manhole covers is proposed.

[0006] The technical solution of this utility model is as follows: a cooling device for cast manhole covers, including a base plate; it also includes a heat-conducting plate and a cooling component; a cooling box is fixedly connected to the upper end of the base plate, a heat-conducting plate is fixedly connected to the top of the inner wall of the cooling box, a first mounting plate is fixedly connected to the outer wall of the cooling box, a water tank is fixedly connected to the upper end of the first mounting plate, a water pump is fixedly connected to the upper end of the water tank, a first connecting pipe is fixedly connected to the outlet end of the water pump, an inlet pipe is fixedly connected to the outer wall of the first connecting pipe, a return pipe is fixedly connected to the outer wall of the cooling box, a first solenoid valve is provided at the end of the return pipe near the cooling box, and a cooling pipe is fixedly connected to the inner wall of the water tank.

[0007] Preferably, a placement box is fixed to the upper end of the base plate, the heat-conducting plate has a square top surface, and the inner wall of the heat-conducting plate is in contact with the outer wall of the placement box.

[0008] Preferably, the cooling component includes a second solenoid valve, a connecting pipe, a nozzle, a drain outlet, a limiting plate, a recycling box, and a handle; the second solenoid valve is fixedly connected to one end of the first connecting pipe near the water pump.

[0009] Preferably, the other end of the first connecting pipe is fixedly connected to a through pipe, and multiple nozzles are fixedly connected to the lower end of the through pipe. The multiple nozzles are evenly distributed at the lower end of the through pipe, and multiple water outlets are opened through the bottom of the inner wall of the box.

[0010] As preferred, two limiting plates are fixedly connected to the lower end of the bottom plate, a recycling box is slidably arranged on the inner wall of the limiting plate, and a handle is fixedly connected to the front end of the recycling box.

[0011] As preferred, the cooling assembly further comprises an air inlet, an air outlet, a dustproof plate and a fan; the air inlet and the air outlet are formed through the upper end of the cooling box, the dustproof plates are fixedly connected to the inner walls of the air inlet and the air outlet, and the fan is fixedly connected to the lower end of the dustproof plate.

[0012] As preferred, a support frame is fixedly connected to the upper end edge of the bottom plate, a gas cylinder is fixedly connected to the upper end of the support frame, the telescopic rod of the gas cylinder is fixedly connected to the upper end of the cooling box, a guide rod is fixedly connected to the upper end edge of the cooling box, and the guide rod extends upward through the lower end of the support frame.

[0013] The utility model discloses the beneficial effects of: starting the gas cylinder makes the telescopic rod drive the cooling box to move down, under the action of the guide rod, the heat conduction plate of the inner wall of cooling box and the outer wall of the placing box are attached, then start the water pump makes the cooling water in the water tank through the water inlet pipe and enters the cooling box, at this time, through the heat conduction plate, heat is transferred, then open the first solenoid valve and make the cooling water through the backwater pipe and enter the water tank again and cool circulation, solveed because the temperature difference is too big, possibly lead to the surface thermal stress of well lid uneven and crack, thereby lead to the problem of unqualified quality. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model discloses a cooling device for cast well lid shows as the three-dimensional structure schematic diagram of cast well lid cooling device;

[0015] Figure 2 The utility model discloses a cooling device for cast well lid shows as the section three-dimensional structure schematic diagram of cooling box of cast well lid cooling device;

[0016] Figure 3 The utility model discloses a cooling device for cast well lid shows as the section three-dimensional structure schematic diagram of water tank of cast well lid cooling device;

[0017] Figure 4 The utility model discloses a cooling device for cast well lid shows as the section three-dimensional structure schematic diagram of cast well lid cooling device; Figure 3 The utility model discloses a cooling device for cast well lid shows as the section three-dimensional structure schematic diagram of cast well lid cooling device;

[0018] The signs in the drawings are: 1, bottom plate;101, heat conduction plate;102, first mounting plate;103, water tank;104, water pump;105, first connecting pipe;106, water inlet pipe;107, backwater pipe;108, first solenoid valve;109, cooling pipe;2, cooling box;201, second solenoid valve;202, through pipe;203, spray head;204, water leakage;205, limiting plate;206, recycling box;207, handle;3, placing box;301, air inlet;302, air outlet;303, dustproof plate;304, fan;4, support frame;5, gas cylinder;6, guide rod. DETAILED DESCRIPTION

[0019] The utility model is further explained below in combination with the drawings and examples.

[0020] Please refer to Figures 1-4 The utility model provides a kind of cooling device for casting well lid, including bottom plate 1;Still including heat conduction plate 101 and cooling assembly;The upper end of bottom plate 1 is fixedly connected with cooling box 2, the inner wall top of cooling box 2 is fixedly connected with heat conduction plate 101, the outer wall of cooling box 2 is fixedly connected with first mounting plate 102, the upper end of first mounting plate 102 is fixedly connected with water tank 103, the upper end of water tank 103 is fixedly connected with water pump 104, the water outlet of water pump 104 is fixedly connected with first connecting pipe 105, the outer wall of first connecting pipe 105 is fixedly connected with water inlet pipe 106, the outer wall of cooling box 2 is fixedly connected with backwater pipe 107, the end of backwater pipe 107 close to cooling box 2 is provided with first electromagnetic valve 108, the inner wall of water tank 103 is fixedly connected with cooling pipe 109, by starting water pump 104, cooling water in water tank 103 is made into cooling box 2 by water inlet pipe 106, heat is transferred by heat conduction plate 101 at this time, then first electromagnetic valve 108 is opened, and cooling water is made into water tank 103 by backwater pipe 107 and is cooled again circulation, it is solved that due to temperature difference is too large, possibly it can lead to the crack of the uneven thermal stress of well lid surface, to cause the problem of unqualified quality.

[0021] Please refer to Figure 1 And Figure 2 In the embodiment, cooling assembly includes second electromagnetic valve 201, pipe 202, spray head 203, water outlet 204, limit plate 205, recovery box 206 and handle 207;The end of first connecting pipe 105 close to water pump 104 is fixedly connected with second electromagnetic valve 201, the other end of first connecting pipe 105 is fixedly connected with pipe 202, the lower end of pipe 202 is fixedly connected with multiple spray heads 203, multiple spray heads 203 are evenly distributed in the lower end of pipe 202, multiple water outlets 204 are vertically provided in the inner wall bottom of placing box 3, the lower end of bottom plate 1 is fixedly connected with two limit plates 205, recovery box 206 is slidably arranged in the inner wall of limit plate 205, handle 207 is fixedly connected to the front end of recovery box 206, after the temperature of well lid surface drops, cooling water can be made into pipe 202 by first connecting pipe 105 by opening second electromagnetic valve 201, then is evenly sprayed to well lid surface by multiple spray heads 203, secondary cooling is carried out to well lid, cooling efficiency is improved, then the sprayed cooling water is made into recovery box 206 by water outlet 204 in the upper end of bottom plate 1, recovery box 206 can be conveniently taken out and the water in it is handled by handle 207.

[0022] Please refer to Figure 4In the embodiment, the cooling assembly further comprises an air inlet 301, an air outlet 302, a dustproof plate 303 and a fan 304; the air inlet 301 and the air outlet 302 are formed through the upper end of the cooling box 2, the inner walls of the air inlet 301 and the air outlet 302 are fixedly connected with the dustproof plates 303, and the lower end of each dustproof plate 303 is fixedly connected with the fan 304; during the cooling process, the fan 304 of the air inlet 301 and the air outlet 302 is started, so that the hot air in the placement box 3 and the external air can be caused to flow in a convection manner, and the hot air is prevented from accumulating in the placement box 3 to affect the cooling efficiency.

[0023] Please refer to Figure 1 and Figure 2 In the embodiment, the support frame 4 is fixedly connected to the upper end edge of the bottom plate 1, the air cylinder 5 is fixedly connected to the upper end of the support frame 4, the telescopic rod of the air cylinder 5 is fixedly connected to the upper end of the cooling box 2, the guide rod 6 is fixedly connected to the upper end edge of the cooling box 2, the guide rod 6 penetrates through the lower end of the support frame 4 and extends upward, the placement box 3 is fixedly connected to the upper end of the bottom plate 1, the bottom surface of the heat conduction plate 101 is square, and the inner wall of the heat conduction plate 101 is attached to the outer wall of the placement box 3; the telescopic rod of the air cylinder 5 is driven to move the cooling box 2 downward, the heat conduction plate 101 on the inner wall of the cooling box 2 is attached to the outer wall of the placement box 3 under the action of the guide rod 6, and the heat conduction plate 101 and the outer wall of the placement box 3 are in close contact, so that the surface area of heat exchange is increased, the cooling process of the cooling system is more efficient, heat is caused to flow out of the cooling box 2 more quickly, and the temperature inside is reduced.

[0024] In use, the air cylinder 5 is first started to drive the telescopic rod to move the cooling box 2 downward, the heat conduction plate 101 on the inner wall of the cooling box 2 is attached to the outer wall of the placement box 3 under the action of the guide rod 6, then the water pump 104 is started to cause the cooling water in the water tank 103 to flow into the cooling box 2 through the water inlet pipe 106, heat is transferred through the heat conduction plate 101 at this time, then the first electromagnetic valve 108 is opened to cause the cooling water to flow into the water tank 103 through the water return pipe 107 to be cooled again, and the problem that cracks can be caused on the surface of the manhole cover due to uneven thermal stress caused by a large temperature difference and thus the quality is unqualified is solved.

[0025] After the temperature of the surface of the manhole cover is reduced, the second electromagnetic valve 201 is opened to cause the cooling water to flow into the pipe 202 through the first connecting pipe 105, then the cooling water is sprayed to the surface of the manhole cover through the multiple spray heads 203 to cool the manhole cover again, the cooling efficiency is improved, and then the sprayed cooling water flows into the recycling box 206 through the water leakage hole 204 in the upper end of the bottom plate 1.

[0026] The fan 304 of the air inlet 301 and the air outlet 302 is started during the cooling process, so that the hot air in the placement box 3 and the external air can be caused to flow in a convection manner, and the hot air is prevented from accumulating in the placement box 3 to affect the cooling efficiency.

[0027] The embodiment of the utility model is explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiment, and various changes can be made within the knowledge range possessed by the person skilled in the art without departing from the purpose of the utility model.

Claims

1. A cooling device for cast manhole covers, comprising a base plate (1); characterized in that: It also includes a heat-conducting plate (101) and a cooling component; a cooling box (2) is fixedly connected to the upper end of the base plate (1), a heat-conducting plate (101) is fixedly connected to the top of the inner wall of the cooling box (2), a first mounting plate (102) is fixedly connected to the outer wall of the cooling box (2), a water tank (103) is fixedly connected to the upper end of the first mounting plate (102), a water pump (104) is fixedly connected to the upper end of the water tank (103), a first connecting pipe (105) is fixedly connected to the outlet end of the water pump (104), an inlet pipe (106) is fixedly connected to the outer wall of the first connecting pipe (105), a return pipe (107) is fixedly connected to the outer wall of the cooling box (2), a first solenoid valve (108) is provided at the end of the return pipe (107) near the cooling box (2), and a cooling pipe (109) is fixedly connected to the inner wall of the water tank (103).

2. The cooling device for cast manhole covers according to claim 1, characterized in that: The bottom plate (1) is fixed to the upper end of the placement box (3), the heat conduction plate (101) is square on the top surface, and the inner wall of the heat conduction plate (101) is in contact with the outer wall of the placement box (3).

3. The cooling device for cast manhole covers according to claim 1, characterized in that: The cooling assembly includes a second solenoid valve (201), a through pipe (202), a nozzle (203), a drain outlet (204), a limit plate (205), a recycling box (206), and a handle (207); the second solenoid valve (201) is fixedly connected to one end of the first connecting pipe (105) near the water pump (104).

4. The cooling device for cast manhole covers according to claim 3, characterized in that: The other end of the first connecting pipe (105) is fixedly connected to a through pipe (202), and multiple nozzles (203) are fixedly connected to the lower end of the through pipe (202). The multiple nozzles (203) are evenly distributed at the lower end of the through pipe (202), and multiple water outlets (204) are opened through the bottom of the inner wall of the placement box (3).

5. The cooling device for cast manhole covers according to claim 1, characterized in that: Two limiting plates (205) are fixedly connected to the lower end of the base plate (1). A recycling box (206) is slidably provided on the inner wall of the limiting plate (205). A handle (207) is fixedly connected to the front end of the recycling box (206).

6. The cooling device for cast manhole covers according to claim 5, characterized in that: The cooling assembly also includes an air inlet (301), an air outlet (302), a dustproof plate (303), and a fan (304); the upper end of the cooling box (2) is provided with an air inlet (301) and an air outlet (302), and the inner walls of the air inlet (301) and the air outlet (302) are fixedly connected with dustproof plates (303), and the lower end of the dustproof plate (303) is fixedly connected with a fan (304).

7. The cooling device for cast manhole covers according to claim 1, characterized in that: A support frame (4) is fixed to the upper edge of the base plate (1), and a cylinder (5) is fixed to the upper end of the support frame (4). The telescopic rod of the cylinder (5) is fixed to the upper end of the cooling box (2). A guide rod (6) is fixed to the upper edge of the cooling box (2). The guide rod (6) passes through the lower end of the support frame (4) and extends upward.