Low pressure casting machine water mist cooling device

Abstract

The utility model provides a low pressure casting machine water mist cooling device, including water tank, water pump, liquid solenoid valve, water mist switch, air cooling system, gas -water separator, exhaust pipe and backwater pipe, water tank is connected with water pump input end through water pipe, water pump output end connects water mist pipeline, and water mist pipeline has liquid solenoden valve in series, and the control end of liquid solenoden valve is connected with water mist switch, and the end of water mist pipeline converges into the air outlet pipeline of air cooling system, and the air outlet pipeline end of air cooling system is connected with mould cooling channel entrance end, and the input end of gas -water separator is connected with mould cooling channel export end through the pipeline, and the output end of gas -water separator is connected with exhaust pipe and backwater pipe respectively, adopt the utility model can control temperature more accurately, and can effectively improve cooling efficiency.

Description

Technical Field

[0001] This utility model relates to a cooling device, and more particularly to a water mist cooling device for a low-pressure casting machine. Background Technology

[0002] Low-pressure casting machines are general-purpose equipment for low-pressure casting of aluminum alloys, widely used in the production of various aluminum alloy castings. When producing aluminum alloy castings on a low-pressure casting machine, the casting mold needs to be connected to a cooling system. The solidification process of the casting directly determines its internal structure and surface condition. The cooling system can control the mold temperature, fundamentally reducing casting defects and improving performance. For example, controlling the solidification sequence through the cooling system can eliminate internal porosity and shrinkage cavities. Controlling the cooling system can also refine grains, improve the mechanical properties of the casting, and enhance surface quality.

[0003] Existing low-pressure casting machines primarily use water cooling and compressed air cooling systems for their casting molds. Water cooling offers extremely high efficiency, rapidly removing large amounts of heat and boasting low operating costs. Water is inexpensive and recyclable, but temperature control is not precise enough, and there are risks of leakage and water circuit blockage. Compressed air cooling leaves no liquid residue, avoiding the risks of mold rust and water circuit blockage, but it has lower cooling efficiency and relatively higher operating costs. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the existing technology by providing a water mist cooling device for low-pressure casting machines, which can more accurately control the temperature and effectively improve cooling efficiency.

[0005] The technical solution adopted by this utility model to achieve the above-mentioned objectives is as follows: a water mist cooling device for a low-pressure casting machine, comprising a water tank, a water pump, a liquid solenoid valve, a water mist switch, an air-cooling system, an air-water separator, an exhaust pipe, and a return water pipe. The water tank is connected to the input end of the water pump through a water pipe, and the output end of the water pump is connected to the water mist pipe. The water mist pipe is connected in series with a liquid solenoid valve, and the control end of the liquid solenoid valve is connected to the water mist switch. The end of the water mist pipe flows into the air outlet pipe of the air-cooling system, and the end of the air outlet pipe of the air-cooling system is connected to the inlet end of the mold cooling channel. The input end of the air-water separator is connected to the outlet end of the mold cooling channel through a pipe, and the output end of the air-water separator is connected to the exhaust pipe and the return water pipe, respectively.

[0006] A further technical solution of this utility model is: the output end of the water pump is connected to multiple parallel water mist pipes, each water mist pipe is connected in series with a liquid solenoid valve, the control end of each liquid solenoid valve is connected to a water mist switch, and the end of each water mist pipe is connected to the air outlet pipe of the air-cooling system.

[0007] A further technical solution of this utility model is: a titrator is connected in series at the rear end of the liquid solenoid valve of each water mist pipe.

[0008] This utility model provides a water mist cooling device for a low-pressure casting machine, which has the following advantages: By adding a water mist pipe that can receive water flow at the front end of the air-cooling system, and connecting a liquid solenoid valve in the water mist pipe, the water flow in the water mist pipe mixes with the compressed air in the air outlet pipe of the air-cooling system to immediately form water mist. The water mist enters the mold cooling channel along with the compressed air to cool the castings in the mold. The cooling time is shorter than that of compressed air alone, but the temperature is easier to control than that of water cooling, and the temperature does not drop as quickly as that of water cooling. It can cool castings with low thermal conductivity and high high-temperature brittleness, and the cooling speed is faster than that of traditional compressed air cooling.

[0009] The following description, in conjunction with the accompanying drawings and embodiments, further illustrates a water mist cooling device for a low-pressure casting machine according to this utility model. Attached Figure Description

[0010] Figure 1 This is a structural schematic diagram of a water mist cooling device for a low-pressure casting machine according to this utility model; The following are the reference numerals: 1-Water tank, 2-Water pump, 3-Water mist pipe, 4-Liquid solenoid valve, 5-Titrator, 6-Water mist switch, 7-Air cooling system, 8-Mold, 9-Air-water separator, 10-Exhaust pipe, 11-Return water pipe. Detailed Implementation

[0011] like Figure 1 As shown, this utility model discloses a water mist cooling device for a low-pressure casting machine, used to cool the casting workpiece inside the mold 8 of a low-pressure casting machine. It includes a water tank 1, a water pump 2, a liquid solenoid valve 4, a water mist switch 6, an air-cooling system 7, an air-water separator 9, an exhaust pipe 10, and a return water pipe 11. The mold 8 is provided with a cooling channel (not shown in the figure). The cooling channel of the low-pressure casting machine mold is an existing design, and its structure will not be described in detail here.

[0012] like Figure 1As shown, water tank 1 is connected to the input end of water pump 2 via a water pipe. The output end of water pump 2 is connected to water mist pipe 3. A liquid solenoid valve 4 is connected in series in water mist pipe 3. The control end of liquid solenoid valve 4 is connected to water mist switch 6. The on / off state of liquid solenoid valve 4 can be controlled by controlling water mist switch 6. The end of water mist pipe 3 flows into the air outlet pipe of air cooling system 7. The end of air outlet pipe of air cooling system 7 is connected to the inlet end of cooling channel of mold 8. Air cooling system 7 adopts an existing structure, which will not be described in detail here. In this embodiment, the output end of water pump 2 is connected to multiple parallel water mist pipes 3. Each water mist pipe 3 is connected in series with a liquid solenoid valve 4. The control end of each liquid solenoid valve 4 is connected to water mist switch 6. A titrator 5 is also connected in series at the rear end of liquid solenoid valve 4 in each water mist pipe 3. The end of each water mist pipe 3 flows into the air outlet pipe of air cooling system 7. Multiple parallel water mist pipes 3 are connected to the output end of water pump 2. The water pumped by water pump 2 from water tank 1 can flow backward through multiple pipes, making the water flow finer. The finer water flow enters the air outlet pipe of air-cooling system 7 and mixes with compressed air more easily to form water mist. The diameter of the air outlet pipe is larger than the diameter of the water mist pipes 3. A titrator 5 is connected in series with each water mist pipe 3. The volume of water passing through the water mist pipe 3 can be observed through the titrator 5. The volume of water in the titrator 5 can be used to determine whether the water flow is too large or too small. If the water flow is too large or too small, the water flow rate can be precisely controlled by adjusting the speed of water pump 2.

[0013] like Figure 1 As shown, a gas-water separator 9 is connected to the outlet end of the cooling channel of mold 8. The input end of the gas-water separator 9 is connected to the outlet end of the cooling channel of mold 8 via a pipe. The output end of the gas-water separator 9 is connected to the exhaust pipe 10 and the return water pipe 11, respectively. The gas-water separator 9 is a device used to separate liquid water from gas. The gas-water separator 9 is an existing device, and its structure will not be described in detail here. The water mist discharged from the outlet end of the cooling channel of mold 8 is separated by the gas-water separator 9. The compressed air is discharged outdoors through the exhaust pipe 10, and the cooling water flows back to the water tank 1 for reuse through the return water pipe 11.

[0014] Before casting begins, water is added to water tank 1. When casting begins, the switch of water pump 2, water mist switch 6, and control switch of air cooling system 7 are turned on. After passing through water pump 2, cooling water enters multiple water mist pipes 3 simultaneously. At the end of water mist pipes 3, cooling water mixes with compressed air to form water mist. The water mist continuously enters the cooling channel of mold 8 to cool the casting in mold 8. The water mist is discharged from the outlet of the cooling channel of mold 8. The discharged water mist is separated by air-water separator 9. The compressed air is discharged outdoors through exhaust pipe 10. After cooling, the cooling water flows back to water tank 1 through return water pipe 11 for reuse.

[0015] The above embodiments are merely preferred embodiments of this utility model. The structure of this utility model is not limited to the forms listed in the above embodiments. Any modifications, equivalent substitutions, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water mist cooling device for a low-pressure casting machine, characterized in that, The system includes a water tank (1), a water pump (2), a liquid solenoid valve (4), a water mist switch (6), an air-cooling system (7), an air-water separator (9), an exhaust pipe (10), and a return water pipe (11). The water tank (1) is connected to the input end of the water pump (2) through a water pipe. The output end of the water pump (2) is connected to the water mist pipe (3). The water mist pipe (3) is connected in series with a liquid solenoid valve (4). The control end of the liquid solenoid valve (4) is connected to the water mist switch (6). The end of the water mist pipe (3) flows into the air outlet pipe of the air-cooling system (7). The end of the air outlet pipe of the air-cooling system (7) is connected to the inlet end of the cooling channel of the mold (8). The input end of the air-water separator (9) is connected to the outlet end of the cooling channel of the mold (8) through a pipe. The output end of the air-water separator (9) is connected to the exhaust pipe (10) and the return water pipe (11) respectively.

2. The water mist cooling device for a low-pressure casting machine as described in claim 1, characterized in that, The output end of the water pump (2) is connected to multiple parallel water mist pipes (3). Each water mist pipe (3) is connected in series with a liquid solenoid valve (4). The control end of each liquid solenoid valve (4) is connected to a water mist switch (6). The end of each water mist pipe (3) is connected to the air outlet pipe of the air-cooling system (7).

3. The water mist cooling device for a low-pressure casting machine as described in claim 2, characterized in that, A titrator (5) is connected in series at the rear end of the liquid solenoid valve (4) of each water mist pipe (3).

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