Casting waste heat utilization device

Abstract

The utility model provides a casting waste heat utilization device which comprises a cooling pond, a plate heat exchanger, a waste heat recovery unit, a non-pressure-bearing heat preservation water tank and a cooling tower. The plate heat exchanger is provided with a second hot water inlet, a second hot water outlet, a first cold water outlet and a first cold water inlet, and the waste heat recovery unit is provided with a first waste hot water inlet, a first waste hot water outlet, a first clear water inlet and a first clear water heating outlet. And a first hot water outlet of the cooling pond is communicated with a second hot water inlet of the plate heat exchanger through a first pipeline. The waste heat recycling system has the advantages that the cooling pond, the plate heat exchanger, the waste heat recycling unit and the non-pressure-bearing heat preservation water tank form the waste heat recycling system, and heat is stored in the non-pressure-bearing heat preservation water tank to be used by the drying room; waste hot water can be cooled in the cooling tower to be recycled, and the recycling rate of heat is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting waste heat recovery, and is particularly suitable for a casting waste heat utilization device. Background Art

[0002] After the foam model produced in the existing lost foam process is coated with paint, the paint needs to be dried before it can be used in the next process. The factory generally uses a drying room to dry the lost foam. At present, the heat of the hot water in the casting molding area cannot be recycled and reused in the drying room, resulting in a waste of heat resources and causing trouble for hot water treatment. Utility Model Content

[0003] The utility model aims to provide a casting waste heat utilization device, which can fully utilize the heat of hot water in the molding area, recycle heat sources, reduce resource waste, and is particularly suitable for use in the drying process of foam models.

[0004] The technical solution of the utility model is: a casting waste heat utilization device, including a cooling pool, a plate heat exchanger, a waste heat recovery unit, a non-pressure insulation water tank, and a cooling tower. The first hot water inlet of the cooling pool is connected with the hot water in the molding area through a hot water pipe. The plate heat exchanger is provided with a second hot water inlet, a second hot water outlet, a first cold water outlet, and a first cold water inlet. The waste heat recovery unit is provided with a first waste hot water inlet, a first waste hot water outlet, a first clean water inlet, and a first clean water heating outlet.

[0005] The first hot water outlet of the cooling pool is connected to the second hot water inlet of the plate heat exchanger through the first pipe, the second hot water outlet of the plate heat exchanger is connected to the first waste hot water inlet of the waste heat recovery unit through the second pipe, the first cold water inlet of the plate heat exchanger is connected to the first waste hot water outlet of the waste heat recovery unit through the third pipe, the first cold water outlet of the plate heat exchanger is connected to the inlet of the negative pressure water diversion tank through the fourth pipe, the outlet of the negative pressure water diversion tank is connected to the cooling tower through the fifth pipe, the first clean water inlet of the waste heat recovery unit is connected to the second clean water outlet of the non-pressure insulation water tank through the sixth pipe, the second hot water inlet of the non-pressure insulation water tank is connected to the first clean water heating outlet of the waste heat recovery unit through the sixth pipe, each pipe is provided with a centrifugal pump, a stop valve, and a drain valve, the hot water outlet hole of the non-pressure insulation water tank is connected to the main pipe, the main pipe is connected to the corresponding hot water pipe fittings through a multi-way connector, the other end of the hot water pipe fittings are respectively connected to the hot water inlet of the corresponding indoor heat exchanger, and the indoor heat exchanger is arranged in the corresponding drying room.

[0006] Preferably, a first hot water inlet and a first hot water outlet are respectively provided on both sides of the cooling pool.

[0007] Preferably, a plurality of partitions are arranged front and back in the cooling pool, and the partitions are provided with through holes, and the plurality of partitions divide the cooling pool into a plurality of areas, and a first hot water outlet is provided on the side wall of the rearmost area.

[0008] Preferably, a filter screen is provided at the first hot water outlet.

[0009] Preferably, a water inlet hole is also provided on the non-pressure insulated water tank, and the water source is connected to the inlet of the water softener through a connecting pipe. The outlet of the water softener is connected to the water inlet hole through a clean water pipe, thereby improving the water quality of the clean water and effectively preventing the impact on the internal components of the non-pressure insulated water tank and the waste heat recovery unit.

[0010] The advantages and positive effects of the utility model are as follows: due to the adoption of the above technical scheme, the cooling pool, plate heat exchanger, waste heat recovery unit, and non-pressurized insulated water tank form a waste heat recovery and utilization system, and the heat is stored in the non-pressurized insulated water tank for use in the drying room; the waste hot water will be cooled in the cooling tower for recycling, thereby improving the heat recovery and utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] In the figure:

[0013] 1. Cooling pool 2. Plate heat exchanger 3. Waste heat recovery unit

[0014] 4. Non-pressure insulation water tank 5. Cooling tower 6. Second hot water inlet

[0015] 7. Second hot water outlet 8. First cold water outlet 9. First cold water inlet

[0016] 10. First waste hot water inlet 11. First waste hot water outlet 12. First clean water inlet

[0017] 13. First clean water heating outlet 14. Negative pressure water diversion tank 15. Main pipe

[0018] 16. Indoor heat exchanger 17. Water softener DETAILED DESCRIPTION

[0019] like Figure 1As shown, the technical solution of the utility model is a casting waste heat utilization device, including a cooling pool 1, a plate heat exchanger 2, a waste heat recovery unit 3, a non-pressure insulation water tank 4, and a cooling tower 5. The first hot water inlet of the cooling pool 1 is connected with the hot water in the molding area through a hot water pipe. The plate heat exchanger 2 is provided with a second hot water inlet 6, a second hot water outlet 7, a first cold water outlet 8, and a first cold water inlet 9. The waste heat recovery unit 3 is provided with a first waste hot water inlet 10, a first waste hot water outlet 11, a first clean water inlet 12, and a first clean water heating outlet 13.

[0020] The first hot water outlet of the cooling pool 1 is connected to the second hot water inlet 6 of the plate heat exchanger 2 through the first pipe, the second hot water outlet 7 of the plate heat exchanger 2 is connected to the first waste hot water inlet 10 of the waste heat recovery unit 3 through the second pipe, the first cold water inlet 9 of the plate heat exchanger 2 is connected to the first waste hot water outlet 11 of the waste heat recovery unit 3 through the third pipe, the first cold water outlet 8 of the plate heat exchanger 2 is connected to the inlet of the negative pressure water diversion tank 14 through the fourth pipe, the outlet of the negative pressure water diversion tank 14 is connected to the cooling tower 5 through the fifth pipe, the first clean water inlet 1 2 is connected to the second clean water outlet of the non-pressure insulation water tank 4 through the sixth pipeline, the second hot water inlet of the non-pressure insulation water tank 4 is connected to the first clean water heating outlet 13 of the waste heat recovery unit 3 through the sixth pipeline, each pipeline is provided with a centrifugal pump, a stop valve, and an emptying valve (part of the centrifugal pump, the stop valve, and the emptying valve are not drawn in the figure), the hot water outlet hole of the non-pressure insulation water tank 4 is connected to the main pipe 15, the main pipe 15 is connected to the corresponding hot water pipe fittings through a multi-way connector, and the other end of the hot water pipe fittings is respectively connected to the hot water inlet of the corresponding indoor heat exchanger 16, and the indoor heat exchanger 16 is arranged in the corresponding drying room.

[0021] In this embodiment, a first hot water inlet and a first hot water outlet are respectively provided on both sides of the cooling pool 1 .

[0022] In this embodiment, a plurality of partitions are arranged front and back in the cooling pool 1, and the partitions are provided with through holes. The plurality of partitions divide the cooling pool 1 into a plurality of areas, and a first hot water outlet is provided on the side wall of the rearmost area.

[0023] In this embodiment, a filter screen is provided at the first hot water outlet.

[0024] In this embodiment, a water inlet hole is also provided on the non-pressure insulated water tank 4. The water source is connected to the inlet of the water softener 17 through a connecting pipe. The outlet of the water softener 17 is connected to the water inlet hole through a clean water pipe, thereby improving the water quality of the clean water and effectively preventing the impact on the internal components of the non-pressure insulated water tank and the waste heat recovery unit.

[0025] The working process and principle of this example are as follows: the hot water in the casting area passes through the cooling pool, plate heat exchanger, and waste heat recovery unit, and the heat of the hot water is stored in the clean water of the non-pressure insulation water tank, and then transported to the indoor heat exchanger of each drying room for drying in the drying room; the cooled waste hot water is returned to the cooling tower for cooling before use.

[0026] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A casting waste heat utilization device, characterized in that: It includes a cooling pool, a plate heat exchanger, a waste heat recovery unit, a non-pressure insulated water tank, and a cooling tower. The first hot water inlet of the cooling pool is connected to the hot water in the molding area through a hot water pipe. The plate heat exchanger is provided with a second hot water inlet, a second hot water outlet, a first cold water outlet, and a first cold water inlet. The waste heat recovery unit is provided with a first waste hot water inlet, a first waste hot water outlet, a first clean water inlet, and a first clean water heating outlet. The first hot water outlet of the cooling pool is connected to the second hot water inlet of the plate heat exchanger through the first pipe, the second hot water outlet of the plate heat exchanger is connected to the first waste hot water inlet of the waste heat recovery unit through the second pipe, the first cold water inlet of the plate heat exchanger is connected to the first waste hot water outlet of the waste heat recovery unit through the third pipe, the first cold water outlet of the plate heat exchanger is connected to the inlet of the negative pressure water diversion tank through the fourth pipe, the outlet of the negative pressure water diversion tank is connected to the cooling tower through the fifth pipe, the first clean water inlet of the waste heat recovery unit is connected to the second clean water outlet of the non-pressure insulation water tank through the sixth pipe, the second hot water inlet of the non-pressure insulation water tank is connected to the first clean water heating outlet of the waste heat recovery unit through the sixth pipe, each pipe is provided with a centrifugal pump, a stop valve, and a drain valve, the hot water outlet hole of the non-pressure insulation water tank is connected to the main pipe, the main pipe is connected to the corresponding hot water pipe fittings through a multi-way connector, the other end of the hot water pipe fittings are respectively connected to the hot water inlet of the corresponding indoor heat exchanger, and the indoor heat exchanger is arranged in the corresponding drying room.

2. The casting waste heat utilization device according to claim 1, characterized in that: A first hot water inlet and a first hot water outlet are respectively arranged on both sides of the cooling pool.

3. The casting waste heat utilization device according to claim 2, characterized in that: A plurality of partitions are arranged front and back in the cooling pool, and the partitions are provided with through holes. The plurality of partitions divide the cooling pool into a plurality of areas, and a first hot water outlet is provided on the side wall of the rearmost area.

4. The casting waste heat utilization device according to claim 1, characterized in that: A filter screen is arranged at the first hot water outlet.

5. The casting waste heat utilization device according to claim 1, characterized in that: The non-pressure-bearing heat-insulating water tank is also provided with a water introduction hole, the water source is connected with the inlet of the water softener through a connecting pipe, and the outlet of the water softener is connected with the water introduction hole through a clean water pipe.

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