Multi-channel independent control accurate temperature control equipment for mold heating temperature control

Abstract

The accurate temperature control equipment comprises a heating barrel, the heating barrel is connected with a first high-temperature pneumatic control valve and a make-up pump, a water outlet of the heating barrel is connected with a circulating pump, the circulating pump is connected with a water outlet filter, and the water outlet filter is connected with an energy connecting box. The energy connecting box is connected with a client mold and a return water filter, the top of the heating barrel is connected with a high-temperature water vapor storage tank, a second one-way valve is installed between a water outlet of the return water filter and a water inlet of the heating barrel, and the second one-way valve is connected with a fourth high-temperature pneumatic control valve. When the equipment is heated, under the condition of no external leakage, the situation that water is supplemented due to insufficient water source in the equipment caused by internal exhaust of the equipment during automatic temperature control operation is avoided, and the heating efficiency can be improved; according to the invention, the use energy consumption of equipment can be greatly optimized; the number of pipelines required for equipment operation is greatly reduced, the early-stage investment cost is reduced, and the heat dissipating capacity of the pipelines is reduced.

Description

Technical Field

[0001] The invention relates to a precise temperature control device with multi-channel independent control for mold heating and temperature control. Background Art

[0002] Existing die-casting temperature control and heating equipment are all dual-channel heating equipment with a small number of channels and high heating power. As a result, a large-scale die-casting production line currently requires dozens of temperature control equipment, which consumes a lot of energy. The internal channels are always open, which is not conducive to mold temperature control, is not in line with the mold temperature control process, and cannot be adjusted according to the production process. The cost of the piping required for the existing equipment is high, the one-time investment capital is high, and the complicated pipelines bring inconvenience to production. Connecting the corresponding equipment to the corresponding pipelines of the mold brings great inconvenience. If the pipelines are connected incorrectly, it will lead to batches of unqualified products. Summary of the Invention

[0003] In view of the above-mentioned defects of the prior art, the object of the present invention is to provide a precise temperature control device with multi-channel independent control for mold heating and temperature control.

[0004] The technical solution of the present invention is: a multi-channel independently controlled precision temperature control device for mold heating and temperature control, including a heating barrel and an energy connection box. A heating pipe is provided in the heating barrel. The water inlet of the heating barrel is connected to a first high-temperature air-controlled valve, the first high-temperature air-controlled valve is connected to a water supply pump, the water outlet of the heating barrel is connected to a circulation pump, the water outlet of the circulation pump is connected to a water outlet filter, the water outlet of the water outlet filter is connected to the energy connection box, the energy connection box is connected to the client mold, the water outlet of the energy connection box is connected to a return water filter, the top of the heating barrel is connected to a high-temperature water vapor storage tank, the steam inlet of the high-temperature water vapor storage tank is connected to a buffer tank, a first one-way valve and a second high-temperature air-controlled valve in sequence through a pipe, the steam outlet of the high-temperature water vapor storage tank is connected to a third high-temperature air-controlled valve, a second one-way valve is installed between the water outlet of the return water filter and the water inlet of the heating barrel, the second one-way valve is connected to a fourth high-temperature air-controlled valve, that is, a second one-way valve is installed between the fourth high-temperature air-controlled valve and the water inlet of the heating barrel.

[0005] Furthermore, it also includes a plate heat exchanger and a fifth high-temperature gas control valve. The plate heat exchanger is connected to the fifth high-temperature gas control valve, the fifth high-temperature gas control valve is connected to the water inlet of the outlet filter, and the plate heat exchanger is connected to the water outlet of the return water filter.

[0006] Furthermore, the position of the high-temperature water vapor storage tank is higher than the heating barrel, the upper end of the high-temperature water vapor storage tank is connected to the top of the heating barrel through a pipe, the middle part of the high-temperature water vapor storage tank is connected to the outside of the heating barrel through a pipe, and the bottom of the high-temperature water vapor storage tank is connected to the bottom of the buffer tank through a pipe.

[0007] Furthermore, a first temperature sensor and a first pressure sensor are installed on the heating barrel, a liquid level sensor is installed on the high-temperature water vapor storage tank, a second temperature sensor and a second pressure sensor are installed between the circulation pump and the water outlet filter, and a return water temperature sensor and a water outlet pressure sensor are provided on the energy connection box.

[0008] Furthermore, when the equipment is started up, the water supply pump and the first high-temperature air-controlled valve are opened to fill the water channel into the heating barrel. At this time, the second high-temperature air-controlled valve is opened to fill the buffer tank with compressed air. After a delay of more than ten seconds, the circulation pump fills the external pipeline water channel. During filling, the fourth high-temperature air-controlled valve is opened, and the internal gas is discharged through the fourth high-temperature air-controlled valve; after the external pipeline water channel is filled, the fourth high-temperature air-controlled valve is closed, and at the same time, after receiving the full water signal from the liquid level sensor, the equipment enters the temperature rise operation stage.

[0009] Furthermore, when the equipment is heating up, the circulating pump is in operation. When the temperature rises, water vapor begins to be generated. The water vapor during the heating process gathers in the high-temperature water vapor storage tank. The temperature of the high-temperature water vapor storage tank is relatively low. The liquid level inside the high-temperature water vapor storage tank is judged by the liquid level sensor, and the internal liquid level of the system is adjusted. When the liquid level is lower than the liquid level sensor, the third high-temperature gas control valve opens to discharge the gas. At this time, the missing space in the heating barrel is supplemented by water through the buffer tank, and the signal transmitted by the liquid level sensor ensures that the heating barrel is full of liquid.

[0010] The beneficial effects of applying the multi-channel independent control precision temperature control equipment for mold heating and temperature control provided by the present invention are:

[0011] 1. When the equipment is heating, in the absence of external leakage, the automatic temperature control operation will not cause insufficient water supply inside the equipment due to internal exhaust of the equipment, which can improve the heating efficiency;

[0012] 2. It can greatly optimize the energy consumption of equipment;

[0013] 3. Greatly reduce the number of pipes required for equipment operation, reduce initial investment costs, and reduce pipe heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] As shown in the figure: 1-heating barrel, 2-energy connection box, 3-heating pipe, 4-first high-temperature gas-controlled valve, 5-water supply pump, 6-circulation pump, 7-outlet filter, 8-client mold, 9-return water filter, 10-high-temperature water vapor storage tank, 11-buffer tank, 12-first one-way valve, 13-second high-temperature gas-controlled valve, 14-third high-temperature gas-controlled valve, 15-second one-way valve, 16-fourth high-temperature gas-controlled valve, 17-water on-off valve, 18-plate heat exchanger, 19-fifth high-temperature gas-controlled valve, 20-first temperature sensor, 21-first pressure sensor, 22-liquid level sensor, 23-second temperature sensor, 24-second pressure sensor, 25-return water temperature sensor, 26-outlet water pressure sensor. DETAILED DESCRIPTION

[0016] In order to more intuitively and completely understand the technical solution of the present invention, a non-limiting description of the features of the present invention is now provided below in conjunction with the accompanying drawings:

[0017] like Figure 1 As shown, a multi-channel independent control precision temperature control device for mold heating and temperature control includes a heating barrel 1 and an energy connection box 2. A heating pipe 3 is provided in the heating barrel 1. The water inlet of the heating barrel 1 is connected to a first high-temperature gas control valve 4, the first high-temperature gas control valve 4 is connected to a water supply pump 5, the water outlet of the heating barrel 1 is connected to a circulation pump 6, the water outlet of the circulation pump 6 is connected to a water outlet filter 7, the water outlet of the water outlet filter 7 is connected to the energy connection box 2, the energy connection box 2 is connected to the client mold 8, and the water outlet of the energy connection box 2 is connected to a return water filter 9. A high-temperature water vapor storage tank 10 is connected to the top of the heating barrel 1. The steam inlet of the high-temperature water vapor storage tank 10 is connected to a buffer tank 11, a first one-way valve 12 and a second high-temperature air-controlled valve 13 in sequence through a pipe. The steam outlet of the high-temperature water vapor storage tank 10 is connected to a third high-temperature air-controlled valve 14. A second one-way valve 15 is installed between the water outlet of the return water filter 9 and the water inlet of the heating barrel 1. The second one-way valve 15 is connected to a fourth high-temperature air-controlled valve 16, that is, a second one-way valve 15 is installed between the fourth high-temperature air-controlled valve 16 and the water inlet of the heating barrel 1.

[0018] The energy connection box 2 is provided with a water on-off valve 17 , and the energy connection box 2 is connected to the water outlet filter 7 , the client mold 8 , and the return water filter 9 through the water on-off valve 17 .

[0019] It also includes a plate heat exchanger 18 and a fifth high-temperature gas-controlled valve 19. The plate heat exchanger 18 is connected to the fifth high-temperature gas-controlled valve 19. The fifth high-temperature gas-controlled valve 19 is connected to the water inlet of the outlet filter 7. The plate heat exchanger 18 is connected to the water outlet of the return water filter 9.

[0020] The position of the high-temperature water vapor storage tank 10 is higher than the heating barrel 1. The upper end of the high-temperature water vapor storage tank 10 is connected to the top of the heating barrel 1 through a pipe, the middle part of the high-temperature water vapor storage tank 10 is connected to the outside of the heating barrel 1 through a pipe, and the bottom of the high-temperature water vapor storage tank 10 is connected to the bottom of the buffer tank 11 through a pipe.

[0021] A first temperature sensor 20 and a first pressure sensor 21 are installed on the heating barrel 1, a liquid level sensor 22 is installed on the high-temperature water vapor storage tank 10, a second temperature sensor 23 and a second pressure sensor 24 are installed between the circulation pump 6 and the water outlet filter 7, and a return water temperature sensor 25 and a water outlet pressure sensor 26 are provided on the energy connection box 2.

[0022] The first temperature sensor 20, the first pressure sensor 21, the liquid level sensor 22, the high-temperature water vapor storage tank 10, the heating pipe 3, the third high-temperature gas control valve 14, and the fourth high-temperature gas control valve 16 constitute the equipment pressure control system.

[0023] When the equipment is started up, the water supply pump 5 and the first high-temperature air-controlled valve 4 are opened to fill the water channel of the heating barrel 1. At this time, the second high-temperature air-controlled valve 13 is opened to fill the buffer tank 11 with compressed air for buffering when the internal pressurization of the equipment is carried out. After a delay of more than ten seconds, the circulation pump 6 fills the external pipeline water channel. During filling, the fourth high-temperature air-controlled valve 16 is opened. At the same time, since a second one-way valve 15 is installed between the heating barrel 1 and the fourth high-temperature air-controlled valve 16, the water in the heating barrel 1 will not be discharged due to the opening of the fourth high-temperature air-controlled valve 16, thereby ensuring the stability of the water pressure in the heating barrel 1. Due to the filling of the water channel, the internal gas in the external pipeline is discharged through the fourth high-temperature air-controlled valve 16; after the external pipeline water channel is filled, the fourth high-temperature air-controlled valve 16 is closed. At the same time, after receiving the full water signal from the liquid level sensor 22, the equipment enters the temperature rise operation stage (the water supply pressure of the water supply pump 5 is greater than the filling gas pressure).

[0024] When the equipment is heated up, the circulating pump 6 is in operation. When the temperature rises, water vapor begins to be generated. The water vapor in the heating process gathers in the high-temperature water vapor storage tank 10. The temperature of the high-temperature water vapor storage tank 10 is relatively low. The liquid level inside the high-temperature water vapor storage tank 10 is judged by the liquid level sensor 22, and the internal liquid level of the system is adjusted. When the liquid level is lower than the liquid level sensor 22, the third high-temperature gas control valve 14 opens to discharge the gas. At this time, the missing space in the heating barrel 1 is replenished with water through the buffer tank 11. The signal transmitted by the liquid level sensor 22 ensures that the heating barrel 1 is full of liquid, and the heating tube 3 will not be in a dry burning state and cause a tube burst. The first temperature sensor 20 and the first pressure sensor 21 are used to ensure the normal working conditions in the heating barrel 1.

[0025] The multi-channel independently controlled precision temperature control device for mold heating and temperature control provided by the present invention can automatically control the temperature when the device is heating and there is no external leakage. The device will not be exhausted from the inside of the device, resulting in insufficient water supply inside the device for replenishment, thereby improving the heating efficiency. The device can greatly optimize the energy consumption of the device, greatly reduce the number of pipelines required for the operation of the device, reduce the initial investment cost, and reduce the heat dissipation of the pipeline.

[0026] Of course, the above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All simple modifications and equivalent structural changes made using the contents of the description and drawings of the present invention should be included in the patent protection scope of the present invention.

Claims

1. Multi-channel independent control precision temperature control equipment for mold heating and temperature control, characterized by: It includes a heating barrel and an energy connection box. A heating pipe is provided in the heating barrel. The water inlet of the heating barrel is connected to a first high-temperature air-controlled valve, which is connected to a water supply pump. The water outlet of the heating barrel is connected to a circulation pump, which is connected to a water outlet filter. The water outlet of the water outlet filter is connected to the energy connection box, which is connected to the client mold. The water outlet of the energy connection box is connected to a return water filter. The top of the heating barrel is connected to a high-temperature water vapor storage tank. The steam inlet of the high-temperature water vapor storage tank is connected to a buffer tank, a first one-way valve and a second high-temperature air-controlled valve in sequence through a pipe. The steam outlet of the high-temperature water vapor storage tank is connected to a third high-temperature air-controlled valve. A second one-way valve is installed between the water outlet of the return water filter and the water inlet of the heating barrel. The second one-way valve is connected to a fourth high-temperature air-controlled valve, that is, a second one-way valve is installed between the fourth high-temperature air-controlled valve and the water inlet of the heating barrel.

2. The multi-channel independent control precision temperature control device for mold heating and temperature control according to claim 1 is characterized by: It also includes a plate heat exchanger and a fifth high-temperature gas control valve. The plate heat exchanger is connected to the fifth high-temperature gas control valve, the fifth high-temperature gas control valve is connected to the water inlet of the outlet filter, and the plate heat exchanger is connected to the water outlet of the return water filter.

3. The multi-channel independent control precision temperature control device for mold heating and temperature control according to claim 2, characterized in that: The position of the high-temperature water vapor storage tank is higher than the heating barrel. The upper end of the high-temperature water vapor storage tank is connected to the top of the heating barrel through a pipe, the middle part of the high-temperature water vapor storage tank is connected to the outside of the heating barrel through a pipe, and the bottom of the high-temperature water vapor storage tank is connected to the bottom of the buffer tank through a pipe.

4. The multi-channel independent control precision temperature control device for mold heating and temperature control according to claim 3 is characterized by: A first temperature sensor and a first pressure sensor are installed on the heating barrel, a liquid level sensor is installed on the high-temperature water vapor storage tank, a second temperature sensor and a second pressure sensor are installed between the circulation pump and the water outlet filter, and a return water temperature sensor and a water outlet pressure sensor are provided on the energy connection box.

5. The multi-channel independent control precision temperature control device for mold heating and temperature control according to claim 4, characterized in that: When the equipment is started up and running, the water supply pump and the first high-temperature air control valve are opened to fill the water channel into the heating barrel. At this time, the second high-temperature air control valve is opened to fill the buffer tank with compressed air. After a delay of more than ten seconds, the circulation pump fills the external pipeline water channel. During filling, the fourth high-temperature air control valve is opened, and the internal gas is discharged through the fourth high-temperature air control valve; after the external pipeline water channel is filled, the fourth high-temperature air control valve is closed, and at the same time, after receiving the full water signal from the liquid level sensor, the equipment enters the temperature rise operation stage.

6. The multi-channel independent control precision temperature control device for mold heating and temperature control according to claim 5, characterized in that: When the equipment is heating up, the circulating pump is in operation. When the temperature rises, water vapor begins to be generated. The water vapor during the heating process gathers in the high-temperature water vapor storage tank. The temperature of the high-temperature water vapor storage tank is relatively low. The liquid level inside the high-temperature water vapor storage tank is judged by the liquid level sensor, and the internal liquid level of the system is adjusted. When the liquid level is lower than the liquid level sensor, the third high-temperature gas control valve opens to discharge the gas. At this time, the missing space in the heating barrel is supplemented by water through the buffer tank. The signal transmitted by the liquid level sensor ensures that the heating barrel is full of liquid.

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