阅读说明：本技术 一种水冷模具冷却水温度控制热能回收装置 (Water cooling mold cooling water temperature control heat recovery unit ) 是由 张爱涛 赵志强 夏中雷 江峰 刘蒙 李宇天 王青强 张博鹏 于 2020-05-27 设计创作，主要内容包括：本发明公开了一种水冷模具冷却水温度控制热能回收装置,模具冷却水处理技术领域,针对模具冷却水温度的波动影响模具铸造质量,同时大量的热能通过冷却塔散热,造成能源的浪费的问题,现提出如下方案,包括水冷模具,所述水冷模具的一侧设有模具冷却水回水箱,所述模具冷却水回水箱的一侧设有一级降温板式换热器,所述一级降温板式换热器的一侧设有冷却塔,所述冷却塔的一侧设有水源热泵机组。本发明通过三级冷却降温系统,二级温控调控,水源热泵机组稳定的提取热量保证了模具冷却水温度恒定在28℃±2℃,保证了模具铸造工件的质量,同时通过本装置回收了模具冷却水热能用于采暖,洗浴和其它用热需求,节约了能源消耗。(The invention discloses a cooling water temperature control heat energy recovery device of a water cooling mold, which belongs to the technical field of mold cooling water treatment and aims at solving the problems that the fluctuation of the cooling water temperature of the mold influences the casting quality of the mold and a large amount of heat energy is radiated through a cooling tower to cause the waste of energy. The invention ensures that the temperature of the mold cooling water is constant at 28 +/-2 ℃ by the three-stage cooling system, two-stage temperature control regulation and control and stable heat extraction of the water source heat pump unit, ensures the quality of the mold casting workpiece, and simultaneously recovers the heat energy of the mold cooling water for heating, bathing and other heat demands, thereby saving energy consumption.)

1. The utility model provides a water cooling mold cooling water temperature control heat recovery unit, includes water cooling mold (1), its characterized in that, one side of water cooling mold (1) is equipped with mould cooling water return water tank (2), one side of mould cooling water return water tank (2) is equipped with one-level cooling plate heat exchanger (5), one side of one-level cooling plate heat exchanger (5) is equipped with cooling tower (6), one side of cooling tower (6) is equipped with water source heat pump set (7), one side of one-level cooling plate heat exchanger (5) is equipped with second grade cooling plate heat exchanger (9), one side of second grade cooling plate heat exchanger (9) is equipped with tertiary cooling plate heat exchanger (11), be equipped with mould cooling water tank (13) between tertiary cooling plate heat exchanger (11) and water cooling mold (1).

2. A water cooling mold cooling water temperature control heat energy recovery device according to claim 1, characterized in that a mold cooling water return pump (3) is provided on a side of the mold cooling water return tank (2) away from the water cooling mold (1), and a primary temperature control three-way valve (4) is provided on a side of the mold cooling water return pump (3) away from the mold cooling water return tank (2).

3. A water cooling mould cooling water temperature control heat energy recovery device according to claim 1, characterized in that a second temperature control three-way valve (10) is arranged between the second temperature reduction plate heat exchanger (9) and the third temperature reduction plate heat exchanger (11).

4. A water-cooled mold cooling water temperature control heat energy recovery device according to claim 1, characterized in that a mold cooling water feed pump (14) is provided between the mold cooling water tank (13) and the water-cooled mold (1).

5. A water cooling mould cooling water temperature control heat energy recovery device according to claim 1, characterized in that two temperature sensors (12) are arranged between the three-stage temperature reduction plate heat exchanger (11) and the mould cooling water tank (13).

6. The cooling water temperature control heat energy recovery device of the water cooling mold according to claim 1, characterized in that a cooling secondary side circulating pump (8) is arranged between the water source heat pump unit (7) and the secondary cooling plate heat exchanger (9), and a liquid level sensor is installed in the mold cooling water return tank (2).

Technical Field

The invention relates to the technical field of mold cooling water treatment, in particular to a water-cooling mold cooling water temperature control heat energy recovery device.

Background

The metal casting is to inject liquid metal in a molten state into a mold cavity, and then the molten material is cooled in the mold cavity to below the thermal deformation temperature of the molten material for solidification and molding. This process is realized through the difference in temperature of melt and mould, and liquid metal temperature is very high can cause the mould temperature to follow and rise, and the quality that the foundry goods can all be influenced to too high and low excessively of mould temperature causes the shrinkage cavity of foundry goods or fills quality problems such as bad, keeps the invariable of mould cooling water temperature and can guarantee that violent fluctuation can not appear in the mould temperature field, has guaranteed the quality of foundry goods, must consider the regulation and control of mould cooling water temperature when consequently using water-cooling mould casting.

At present, the conventional temperature regulation control of mold cooling water adopts a cooling tower heat dissipation and chilled water temperature regulation mode to control the temperature, the fluctuation of the temperature of the mold cooling water is easily caused to influence the mold casting quality, meanwhile, a large amount of heat energy is dissipated through the cooling tower, the waste of energy is caused, in order to guarantee the constant control of the temperature of the mold cooling water, the waste of the energy is reduced, and therefore, a water cooling mold cooling water temperature control heat energy recovery device is provided.

Disclosure of Invention

The invention provides a heat energy recovery device for controlling the temperature of cooling water of a water-cooling mold, which solves the problems that the temperature of the cooling water of the mold is controlled by adopting a cooling tower heat dissipation and chilled water temperature regulation mode in the conventional temperature regulation and control mode, the casting quality of the mold is easily influenced by the fluctuation of the temperature of the cooling water of the mold, and simultaneously, a large amount of heat energy is dissipated through the cooling tower, so that the energy is wasted.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a water cooling mold cooling water temperature control heat recovery unit, includes water cooling mold, one side of water cooling mold is equipped with mould cooling water return water tank, one side of mould cooling water return water tank is equipped with one-level cooling plate heat exchanger, one side of one-level cooling plate heat exchanger is equipped with the cooling tower, one side of cooling tower is equipped with water source heat pump set, one side of one-level cooling plate heat exchanger is equipped with second grade cooling plate heat exchanger, one side of second grade cooling plate heat exchanger is equipped with tertiary cooling plate heat exchanger, be equipped with mould cooling water tank between tertiary cooling plate heat exchanger and the water cooling mold.

Preferably, one side of the mold cooling water return tank, which is far away from the water-cooled mold, is provided with a mold cooling water return pump, and one side of the mold cooling water return pump, which is far away from the mold cooling water return tank, is provided with a one-level temperature control three-way valve.

Preferably, a second-stage temperature control three-way valve is arranged between the second-stage cooling plate type heat exchanger and the third-stage cooling plate type heat exchanger.

Preferably, a mold cooling water supply pump is arranged between the mold cooling water tank and the water-cooled mold.

Preferably, two temperature sensors are arranged between the three-stage cooling plate type heat exchanger and the mold cooling water tank.

Preferably, a cooling secondary side circulating pump is arranged between the water source heat pump unit and the secondary cooling plate type heat exchanger.

Compared with the prior art, the invention has the beneficial effects that: through tertiary cooling system, second grade control by temperature change regulation and control, the stable heat that draws of water source heat pump set has guaranteed that mould cooling water temperature is invariable at 28 ℃ 2 ℃, has guaranteed the quality of mould casting work piece, has retrieved mould cooling water heat energy through this device simultaneously and has been used for the heating, bathing and other heat demands, have practiced thrift energy consumption.

Drawings

Fig. 1 is a schematic view of a flow structure of a cooling water temperature control heat energy recovery device for a water-cooling mold according to the present invention.

In the figure: 1 water cooling mould, 2 mould cooling water return water tank, 3 mould cooling water return water pumps, 4 one-level control by temperature change three-way valves, 5 one-level cooling plate heat exchangers, 6 cooling towers, 7 water source heat pump units, 8 cooling secondary side circulating pumps, 9 second grade cooling plate heat exchangers, 10 second grade control by temperature change three-way valves, 11 third grade cooling plate heat exchangers, 12 temperature sensor, 13 mould cooling water tank, 14 mould cooling water working pumps.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1, a water cooling mold cooling water temperature control heat recovery unit, including water cooling mold 1, one side of water cooling mold 1 is equipped with mold cooling water return water tank 2, one side of mold cooling water return water tank 2 is equipped with one-level cooling plate heat exchanger 5, one side of one-level cooling plate heat exchanger 5 is equipped with cooling tower 6, one side of cooling tower 6 is equipped with water source heat pump set 7, one side of one-level cooling plate heat exchanger 5 is equipped with second grade cooling plate heat exchanger 9, one side of second grade cooling plate heat exchanger 9 is equipped with tertiary cooling plate heat exchanger 11, be equipped with mold cooling water tank 13 between tertiary cooling plate heat exchanger 11 and the water cooling mold 1.

In this embodiment, one side that water cooling mold 1 was kept away from to mould cooling water return tank 2 is equipped with mould cooling water return pump 3, and one side that mould cooling water return tank 2 was kept away from to mould cooling water return pump 3 is equipped with one-level control by temperature change three-way valve 4.

In this embodiment, a second-stage temperature control three-way valve 10 is arranged between the second-stage cooling plate heat exchanger 9 and the third-stage cooling plate heat exchanger 11.

In this embodiment, a mold cooling water supply pump 14 is provided between the mold cooling water tank 13 and the water-cooled mold 1.

In this embodiment, two temperature sensors 12 are disposed between the three-stage cooling plate heat exchanger 11 and the mold cooling water tank 13.

In this embodiment, a cooling secondary side circulating pump 8 is disposed between the water source heat pump unit 7 and the second-stage cooling plate heat exchanger 9.

The working principle is firstly explained by taking the constant temperature control of the cooling water of the aluminum wheel hub die and the heat energy recovery as an example, a die cooling water supply pump 14 extracts the cooling water with the temperature of 28 +/-2 ℃ in a die cooling water tank 13 to pressurize and supply the cooling water to a water cooling die 1, the temperature of the water cooling die 1 is raised from the temperature of 28 +/-2 ℃ to 60 ℃ after being cooled, the cooling water automatically flows into a die cooling water return tank 2, the die cooling water return pump 3 extracts the cooling water with the temperature of 60 ℃ to pressurize, then the cooling water enters a first-level temperature-reducing plate type heat exchanger 5 to be cooled through a first-level temperature-controlling three-way valve 4, then the cooling water further enters a second-level temperature-reducing plate type heat exchanger 9 to be cooled, the outlet water enters a second-level temperature-controlling three-way valve 10 and is detected by a temperature sensor 12, if the temperature exceeds 30 ℃, a, before entering the mold cooling water tank 13, the water temperature is prevented from being too low by detecting through the primary temperature control three-way valve 4 and the temperature sensor 12, and the water temperature is ensured to be stabilized at 28 +/-2 ℃.

The primary cooling plate type heat exchanger 5, the secondary cooling plate type heat exchanger 9, the tertiary cooling plate type heat exchanger 11 and the cooling secondary side circulating pump 8 are kept running all the time, the normal work of a cooling system is guaranteed, secondary side circulating water is used for heating after being extracted with heat energy through the water source heat pump unit 7, bathing and other heat consumption are carried out, the heat pump unit is set to run in a refrigeration mode, and the temperature of the secondary side circulating water is kept fluctuating within the range of +/-2 ℃.

The cooling tower 6 plays a standby role for a closed cooling tower and is opened when the water source heat pump is maintained.

The mold cooling water supply pump 14 is always operated;

3 intermittent type moves of mould cooling water return pump, installs level sensor in the mould cooling water return tank 2, and mould cooling water return pump 3 starts when high liquid level, and mould cooling water return pump 3 starts to stop during the low liquid level.

The whole device maintains the constant water temperature of the mold cooling water and recovers the heat energy of the mold cooling water through adjustment, so that the heat energy can be recovered for saving energy sources such as heating and bathing while the stable quality of the mold casting process is ensured.

The temperature of the cooling water of the die is constant and is regulated and controlled by a three-level cooling system and a two-level temperature control valve, and heat energy is extracted by a water source heat pump unit to be used for heating, bathing and other heat consumption while the temperature is constant. According to the actual operation technology, the target control temperature of the cooling water of the mold can be conveniently adjusted, the condition that the casting quality of the mold is influenced by temperature control fluctuation caused by manual operation is reduced, the cooling water of the mold uses pure water, and the cooling water does not contact with the outside and is radiated by heat transfer, so that the quality of a water body is ensured.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.