A composite sand box cooling structure for lost foam shell precision casting

Abstract

The utility model provides a kind of for lost foam hollow shell precision casting composite sand box cooling structure, belong to the field of casting processing technology, it includes sand box main part, the protective shell is fixed with protective shell outside the sand box main part, annular cooling pipe is wound in the cavity between the sand box main part and the protective shell;Cooling liquid tank and control unit are provided outside the protective shell, circulation water pump electrically connected with control unit is provided between the cooling liquid tank and protective shell, the two ends of the circulation water pump are connected with the water suction pipe of intercommunication cooling liquid tank and the annular cooling pipe of one end protruding protective shell;Temperature sensor that is inserted into cooling liquid tank inside and is connected with control unit communication is further provided on the cooling liquid tank;The side of the protective shell is provided with air blower.The utility model can effectively improve the cooling efficiency and the uniformity of cooling of sand box main part by a variety of cooling means, so as to help to improve the precision casting quality and precision of lost foam hollow shell precision casting, improve product pass rate.

Description

Technical Field

[0001] This utility model belongs to the field of casting processing technology, and relates to a composite sand box cooling structure, especially a composite sand box cooling structure for lost foam shell precision casting. Background Technology

[0002] Composite sand boxes are crucial equipment in modern casting processes. Through structural innovation and optimized material combinations, they meet the specific performance requirements of sand boxes in various casting scenarios. Compared to traditional single-material or single-function sand boxes, composite sand boxes exhibit significant advantages in structural design, functional integration, and process adaptability. As a vital piece of equipment in modern precision casting, the performance of the composite sand box cooling system directly impacts casting quality and production efficiency. Existing sand box cooling structures suffer from low cooling efficiency and uneven cooling temperature gradients in hollow shell casting. When used for lost foam hollow shell precision casting, this uneven cooling temperature gradient severely affects the casting quality, resulting in large precision errors and low yield rates. Therefore, it is necessary to provide a composite sand box cooling structure that can improve cooling efficiency and achieve uniform cooling temperature for lost foam hollow shell precision casting. Utility Model Content

[0003] The purpose of this invention is to provide a composite sand box cooling structure for lost foam shell precision casting, so as to solve the technical problems of low cooling efficiency and uneven cooling temperature gradient in the prior art.

[0004] To achieve the above objectives, the specific technical solution of this utility model is as follows: A composite sand box cooling structure for lost foam shell precision casting, comprising a sand box body, a protective shell fixedly fitted on the outer side of the sand box body, and an annular cooling pipe wound in the cavity between the sand box body and the protective shell; A coolant tank and a control unit are provided outside the protective shell. A circulating water pump electrically connected to the control unit is provided between the coolant tank and the protective shell. The two ends of the circulating water pump are respectively connected to a water pumping pipe that connects to the coolant tank and an annular cooling pipe that extends out of the protective shell. A temperature sensor that extends into the coolant tank and is connected to the control unit is also provided on the coolant tank. A blower is provided on one side of the protective shell. The blower is electrically connected to the control unit. The input end of the blower is fixed with a dust cover, and the output end is connected to the cavity between the protective shell and the sand box body through a blower pipe. A ventilation window is opened on the other side of the protective shell, and an exhaust mesh frame is fixed at the ventilation window.

[0005] The upper part of the coolant tank is provided with an isolation box that isolates it from the coolant. The control unit is located in the isolation box and includes a PLC controller with a PLC control panel. The PLC controller is communicatively connected to the temperature sensor and electrically connected to the circulating water pump and the blower.

[0006] The coolant tank has a transparent observation window sealed on the front, and an alarm light is installed on the top of the coolant tank. The PLC controller is electrically connected to the alarm light.

[0007] A cold water supply pipe is provided on the upper side of the coolant tank, and a control water valve is connected to the other end of the cold water supply pipe. A drain pipe is provided at the bottom of the coolant tank, and a drain valve is provided on the drain pipe.

[0008] A set of heat-conducting and heat-dissipating fins are fixedly embedded on both the left and right sides of the sand box body. The end of each heat-conducting and heat-dissipating fin away from the sand box body penetrates through the protective shell and extends to the outside of the protective shell. Heat dissipation holes are opened on the outer surface of each heat-conducting and heat-dissipating fin.

[0009] A screen frame is installed at the lower end of the interior of the sand box body, and a discharge chamber door is installed on the outer bottom surface of the sand box body, with an opening and closing handle on the discharge chamber door.

[0010] The upper end of the sand box body is provided with two lifting rings, which are symmetrically arranged on both sides of the upper end of the sand box body.

[0011] The lower end of the protective shell is provided with a plurality of support legs, each of which is fixedly connected to a damping pad at its bottom end, and each of which has a mounting hole on its upper surface.

[0012] The beneficial effects of this utility model are as follows: By providing a composite sand box cooling structure for lost foam shell precision casting, and by setting up an annular cooling pipe, a circulating water pump, and a coolant tank, the sand box body can be water-cooled in all directions during the cooling stage after casting. Continuous cooling using circulating coolant effectively eliminates the problem of uneven cooling temperature gradients at different locations within the sand box body. Furthermore, the addition of a blower provides auxiliary air cooling for the cavity between the sand box body and the protective shell, combined with heat-conducting fins. This combination of multiple cooling methods effectively improves the cooling efficiency and uniformity of the sand box body, thereby contributing to improved casting quality and precision in lost foam shell precision casting, and increasing the product qualification rate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a rear view of the main structure of this utility model; Figure 3 This is a half-sectional structural diagram of the main body of the sand box of this utility model; Figure 4 This is a cross-sectional view of the main structure of this utility model; Figure 5 This is a bottom view of the main body of the sand box of this utility model.

[0014] The markings in the diagram are as follows: 1. Sand box body; 2. Protective shell; 3. Annular cooling pipe; 4. Heat-conducting fins; 41. Heat dissipation hole; 5. Cold water supply pipe; 51. Control water valve; 6. Support leg; 61. Damping pad; 62. Mounting hole; 7. Coolant tank; 8. PLC control panel; 9. Observation frame; 10. Alarm light; 11. Temperature monitoring sensor; 12. Lifting ring; 13. Blower; 14. Blower pipe; 15. Dust cover; 16. Circulating water pump; 17. Water suction pipe; 18. Screen frame; 19. Drain pipe; 191. Drain valve; 20. Discharge compartment door; 201. Opening handle; 21. Exhaust mesh frame. Detailed Implementation

[0015] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model is provided below with reference to the accompanying drawings.

[0016] like Figures 1 to 5 As shown, this utility model provides a composite sand box cooling structure for lost foam shell precision casting, which includes a sand box body 1, a protective shell 2 fixedly fitted on the sand box body 1, an annular cooling pipe 3 wound in the cavity between the sand box body 1 and the protective shell 2 for water cooling of the sand box body 1, a coolant tank 7 and a control unit are provided outside the protective shell 2, a circulating water pump 16 electrically connected to the control unit is provided between the coolant tank 7 and the protective shell 2 for providing circulating coolant to the annular cooling pipe 3, the two ends of the circulating water pump 16 are respectively connected to a water pump 17 connected to the coolant tank 7 and the liquid inlet end of the annular cooling pipe 3 extending out of the protective shell 2, and the liquid outlet end of the annular cooling pipe 3 extends out of the protective shell 2 and is connected to the coolant tank 7; a temperature sensor 11 is also provided on the coolant tank 7, extending into the coolant tank 7 and communicating with the control unit, for monitoring the temperature of the coolant during the circulating cooling process; Furthermore, in this embodiment, an air-cooling unit is also provided on the composite sand box. Specifically, a blower 13 electrically connected to the control unit is provided on one side of the protective shell 2. Figure 2 As shown, the air input end of the blower 13 is fixed with a dust cover 15, and the output end is connected to the cavity between the protective shell 2 and the sand box body 1 through the blower pipe 14. The blower 13 cools the cavity by air cooling. At the same time, in order to exhaust air and maintain the pressure balance in the cavity, a ventilation window is opened on the other side of the protective shell 2, and an exhaust mesh frame 21 is fixed at the ventilation window.

[0017] Furthermore, such as Figure 4 As shown, the upper part of the coolant tank 7 is provided with an isolation box that is isolated from the coolant. The control unit is located in the isolation box and includes a PLC controller with a PLC control panel 8. The PLC controller is communicatively connected to the temperature sensor 11 and electrically connected to the circulating water pump 16 and the blower 13.

[0018] Furthermore, to facilitate observation of the coolant level in the coolant tank 7, a transparent observation window 9 is provided on the front of the coolant tank 7, and an alarm light 10 is provided on the top of the coolant tank 7. The PLC controller is electrically connected to the alarm light 10 and is used to sound an alarm when the coolant temperature is higher than the set value, reminding the staff to add new coolant.

[0019] To facilitate coolant replacement, a cold water supply pipe 5 is provided on the upper side of the coolant tank 7 in this embodiment. The other end of the cold water supply pipe 5 is connected to an external water supply pipe via a control water valve 51. Figure 1 As shown, a drain pipe 19 is provided at the bottom of the coolant tank 7, and a drain valve 191 is provided on the drain pipe, such as... Figure 4 As shown. In this embodiment, for ease of control, the control water valve 51 and the drain valve 191 are selected as solenoid valves electrically connected to the PLC controller.

[0020] Furthermore, in this embodiment, a set of metal heat-conducting and heat-dissipating fins 4 are fixedly embedded on both the left and right sides of the sand box body 1. There are multiple heat-conducting and heat-dissipating fins 4 in each set, which are evenly distributed on the sand box body 1. The end of each heat-conducting and heat-dissipating fin 4 away from the sand box body 1 penetrates the protective shell 2 and extends to the outside of the protective shell 2. Each heat-conducting and heat-dissipating fin 4 has heat dissipation holes 41 on its outer surface, which dissipate heat to the outside through the metal heat-conducting and heat-dissipating fin 4.

[0021] Furthermore, such as Figure 3 , Figure 4 As shown, a screen frame 18 is provided at the lower end of the interior of the sand box body 1, and a discharge hatch 20 is installed on the outer bottom surface of the sand box body 1. Figure 5 As shown, the discharge hatch 20 is equipped with an opening and closing handle 201.

[0022] Furthermore, to facilitate hoisting and relocation, in this embodiment, a hoisting ring 12 is provided at the upper end of the sand box body 1. There are two hoisting rings 12, which are symmetrically arranged on both sides of the upper end of the sand box body 1.

[0023] Furthermore, in this embodiment, the lower end of the protective shell 2 is evenly provided with a plurality of support legs 6, the bottom end of each support leg 6 is fixedly connected with a damping pad 61, and the upper surface of each support leg is provided with an installation hole.

[0024] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A composite sand box cooling structure for lost foam casting of hollow shells, characterized in that: It includes a sand box body (1), a protective shell (2) is fixedly fitted on the outside of the sand box body (1), and an annular cooling pipe (3) is wound in the cavity between the sand box body (1) and the protective shell (2). A coolant tank (7) and a control unit are provided outside the protective shell (2). A circulating water pump (16) electrically connected to the control unit is provided between the coolant tank (7) and the protective shell (2). The two ends of the circulating water pump (16) are respectively connected to a water pumping pipe (17) that connects to the coolant tank (7) and an annular cooling pipe (3) that extends out of the protective shell (2). A temperature sensor (11) that extends into the coolant tank (7) and is connected to the control unit is also provided on the coolant tank (7). A blower (13) is provided on one side of the protective shell (2). The blower (13) is electrically connected to the control unit. A dust cover (15) is fixed at the input end of the blower (13), and the output end is connected to the cavity between the protective shell (2) and the sand box body (1) through the blower pipe (14). A ventilation window is opened on the other side of the protective shell (2), and an exhaust mesh frame (21) is fixed at the ventilation window.

2. The composite sand box cooling structure for lost foam shell precision casting according to claim 1, characterized in that: The upper part of the coolant tank (7) is provided with an isolation box that is isolated from the coolant. The control unit is located in the isolation box and includes a PLC controller with a PLC control panel (8). The PLC controller is communicatively connected to the temperature sensor (11) and electrically connected to the circulating water pump (16) and the blower (13).

3. The composite sand box cooling structure for lost foam shell precision casting according to claim 2, characterized in that: The front of the coolant tank (7) is sealed with a transparent observation window (9), and an alarm light (10) is provided on the top of the coolant tank (7). The PLC controller is electrically connected to the alarm light (10).

4. The composite sand box cooling structure for lost foam shell precision casting according to claim 1, characterized in that: A cold water supply pipe (5) is provided on the upper side of the coolant tank (7), and a control water valve (51) is connected to the other end of the cold water supply pipe (5). A drain pipe (19) is provided at the bottom of the coolant tank (7), and a drain valve (191) is provided on the drain pipe (19).

5. A composite sand box cooling structure for lost foam shell precision casting according to claim 1, characterized in that: A set of heat-conducting and heat-dissipating fins (4) are fixedly embedded on both the left and right sides of the sand box body (1). Each heat-conducting and heat-dissipating fin (4) has one end away from the sand box body (1) that penetrates through the protective shell (2) and extends to the outside of the protective shell (2). Each heat-conducting and heat-dissipating fin (4) has heat dissipation holes (41) on its outer surface.

6. The composite sand box cooling structure for lost foam shell precision casting according to claim 1, characterized in that: A screen frame (18) is provided at the lower end of the sand box body (1), and a discharge chamber door (20) is installed on the outer bottom surface of the sand box body (1). An opening and closing handle (201) is provided on the discharge chamber door (20).

7. A composite sand box cooling structure for lost foam shell precision casting according to claim 1, characterized in that: The upper end of the sand box body (1) is provided with a lifting ring (12), and there are two lifting rings (12) symmetrically arranged on both sides of the upper end of the sand box body (1).

8. A composite sand box cooling structure for lost foam shell precision casting according to claim 1, characterized in that: The lower end of the protective shell (2) is provided with a plurality of support legs (6), and each support leg (6) is fixedly connected to a damping pad (61) at its bottom end. Each support leg (6) has an installation hole (62) on its upper surface.

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