Water cooling circulation system for die casting mold

Abstract

This invention discloses a die-casting mold water cooling circulation system, comprising a mold cooling water outlet, a first pump group, a cooling tower, a cooling water pool, a second pump group, and a mold cooling water inlet, all connected in a circulating manner. A temperature sensor is provided at the mold cooling water inlet. The cooling tower includes a cooling body, a first inlet, and a nozzle. A first heat exchange pipe assembly is provided on the inner wall of the cooling body below the nozzle. The first heat exchange pipe assembly includes several intersecting first and second pipes, the cross-sections of which are elliptical. The elliptical arrangement of the first, second, third, and fourth pipes, with their major axes arranged laterally, increases the contact time of the atomized water droplets and prevents them from accumulating on the first, second, third, and fourth pipes. Furthermore, the introduction of cooling gas into the first, second, third, and fourth pipes enhances the heat dissipation effect.

Description

Technical Field

[0001] This invention belongs to the field of circulating cooling equipment, and specifically relates to a water cooling circulation system for die casting molds. Background Technology

[0002] Circulating cooling water refers to water that exchanges heat with a medium through a heat exchanger or direct contact heat exchange, and is then cooled in a cooling tower before being reused to save water resources. The cooling effect of circulating water is the result of three processes: evaporative cooling, contact cooling, and radiative cooling, all occurring through contact between water and air. Many injection molding companies use cooling tower circulation systems to cool injection molds. However, after cooling the mold, the water temperature rises significantly. Directly introducing high-temperature water into the cooling tower will further increase the temperature inside, increasing the workload of the cooling system and affecting subsequent cooling efficiency. Alternatively, the high-temperature water is directly discharged after cooling, resulting in water waste and increased water costs. Therefore, the demand for a circulating cooling device for mold processing is growing. Summary of the Invention

[0003] To solve at least one of the above-mentioned technical problems, the present invention provides a die-casting mold water cooling circulation system: including a mold cooling water outlet, a first pump group, a cooling tower, a cooling water pool, a second pump group, and a mold cooling water inlet connected in a circulation manner. A temperature sensor is provided at the mold cooling water inlet to detect the return cooling water. When the temperature is too high, an alarm is triggered. The positions of the cooling water pool and the cooling tower can be interchanged. After the cooling water pool has initially cooled the water, it is fed into the cooling tower.

[0004] Alternatively, a longer connecting pipe can be installed before the cooling tower.

[0005] The cooling tower includes a cooling body, a first inlet at the top of the cooling body, and a nozzle connected to the first inlet. A first heat exchange tube assembly is provided on the inner wall of the cooling body and below the nozzle. The first heat exchange tube assembly includes several intersecting and interconnected first and second tubes. The cross-sections of the first and second tubes are elliptical, and their major axes are perpendicular to the direction of the first inlet.

[0006] A first outlet is formed by the staggered arrangement of several first pipe bodies and several second pipe bodies.

[0007] The cooling tower body has a second heat exchange tube assembly located on its inner wall and below the first heat exchange tube assembly. The second heat exchange tube assembly includes several intersecting and interconnected third and fourth tubes. The cross-sections of the fourth and third tubes are elliptical, and their major axes are perpendicular to the direction of the first inlet.

[0008] A second water outlet is formed by the staggered arrangement of several third pipe bodies and several fourth pipe bodies; the second water outlet and the second water outlet are staggered.

[0009] The first heat exchange tube assembly and the second heat exchange tube assembly are respectively connected to a first connecting pipe, and the first connecting pipe passes through the outer wall of the cooling tower body and connects to the cooling gas.

[0010] The cooling tower body has at least one obliquely arranged external pipe on its inner wall and below the second heat exchange tube assembly, and the external pipe is connected to cooling gas.

[0011] The above technical solution, with the first, second, third, and fourth tubes arranged in an elliptical shape and their major axes arranged laterally, increases the contact time of the atomized water droplets on the first, second, third, and fourth tubes, preventing them from accumulating on them. Furthermore, the introduction of cooling gas into the first, second, third, and fourth tubes enhances heat dissipation.

[0012] In a preferred embodiment, the nozzle includes a nozzle tube connected to the first inlet, the nozzle tube being connected to a first splash plate via a first connecting rod, the first splash plate having a first through hole at its center, and a second splash plate being connected below the first splash plate via a second connecting rod. The first splash plate has an upwardly curved first bend on its outer periphery, and a plurality of first swirling grooves are spirally formed on the first bend. The second splash plate has an upwardly curved second bend on its outer periphery, and a plurality of second swirling grooves are spirally formed on the second bend. The first and second swirling grooves are arranged in opposite directions.

[0013] Through the above technical solution, the first splashing plate can increase the swirling effect and disperse water molecules. The smaller the water droplets, the faster the heat dissipation. Furthermore, by using two splashing plates, the splashing effect is increased, thereby increasing the cooling rate.

[0014] In a preferred embodiment, the first pump assembly includes a first main pump and a first auxiliary pump. The first main pump includes a first main pump body with a first main operating chamber inside. A first main gear is fixed inside the first main operating chamber. A first main control component is built into the first main operating chamber. The first main control component is a round triangle with a hollow first main hole. A first main tooth that meshes with the first main gear is formed on the inner wall of the first main hole. The assembly also includes a first main motor. The output end of the first main motor passes through the first main gear and is fixed to a first main connector. A second main connector is fixed on the inner wall of the first main hole. The first main connector and the second main connector are hinged together. When the first main motor drives the first main control component to rotate, the three outer walls of the first main control component always contact the inner wall of the first main operating chamber. The first main pump body also has a first main inlet and a first main outlet that are arranged in parallel and communicate with the first main operating chamber.

[0015] The first auxiliary pump includes a first auxiliary pump body, a first auxiliary operating chamber, a first auxiliary gear fixed inside the first auxiliary operating chamber, a first auxiliary control component built into the first auxiliary operating chamber, the first auxiliary control component being a round triangle with a hollow first auxiliary hole, a first auxiliary tooth meshing with the first auxiliary gear on the inner wall of the first auxiliary hole, and a first auxiliary motor, the output end of the first auxiliary motor passing through the first auxiliary gear and fixed to a first auxiliary connector, a second auxiliary connector fixed to the inner wall of the first auxiliary hole, the first auxiliary connector and the second auxiliary connector being hinged together; when the first auxiliary motor drives the first auxiliary control component to rotate, the three outer walls of the first auxiliary control component always contact the inner wall of the first auxiliary operating chamber; the first auxiliary pump body also has a first auxiliary inlet and a first auxiliary outlet arranged in parallel and communicating with the first auxiliary operating chamber;

[0016] A first tee is connected to the cooling water outlet of the mold. The two outlets of the first tee are respectively connected to the first main inlet and the first auxiliary inlet. The mold also includes a second tee. The first main outlet and the first auxiliary outlet are respectively connected to the two inlets of the second tee. The outlet of the second tee is connected to the first inlet of the cooling tower.

[0017] The first main motor is connected to a first motor current detection circuit. When the first main motor stops, the first motor current detection circuit transmits the detection information to the control circuit, and the control circuit controls the first auxiliary motor to start so that the system can work normally.

[0018] With the above technical solution, the first main motor works during normal operation. When the first main motor is jammed or damaged and stops, the first motor current detection circuit transmits the detection information to the control circuit. The control circuit then cuts off the power supply to the first main motor and starts the first auxiliary motor to ensure the normal operation of the system.

[0019] Preferably, the second pump set includes a second main pump and a second auxiliary pump. The second main pump includes a second main pump body with a second main operating chamber inside. A second main gear is fixed inside the second main operating chamber. A second main control component is built into the second main operating chamber. The second main control component is a round triangle with a hollow second main hole. A second main tooth that meshes with the second main gear is formed on the inner wall of the second main hole. The pump set also includes a second main motor. The output end of the second main motor passes through the second main gear and is fixed with a third main connector. A fourth main connector is fixed on the inner wall of the first main hole. The third and fourth main connectors are hinged. When the second main motor drives the second main control component to rotate, the three outer walls of the second main control component always contact the inner wall of the second main operating chamber. The second main pump body also has a second main inlet and a second main outlet that are arranged in parallel and communicate with the second main operating chamber.

[0020] The second auxiliary pump includes a second auxiliary pump body, a second auxiliary operating chamber, a second auxiliary gear fixed inside the second auxiliary operating chamber, a second auxiliary control component built into the second auxiliary operating chamber, the second auxiliary control component being a round triangle with a hollow second auxiliary hole, a second auxiliary tooth meshing with the second auxiliary gear on the inner wall of the first auxiliary hole, and a second auxiliary motor, the output end of the second auxiliary motor passing through the second auxiliary gear and fixed to a third auxiliary connector, a fourth auxiliary connector fixed to the inner wall of the second auxiliary hole, the third auxiliary connector and the fourth auxiliary connector being hinged; when the second auxiliary motor drives the second auxiliary control component to rotate, the three outer walls of the second auxiliary control component always contact the inner wall of the second auxiliary operating chamber; the second auxiliary pump body also has a second auxiliary inlet and a second auxiliary outlet arranged in parallel and communicating with the second auxiliary operating chamber;

[0021] A third three-way valve is connected from the mold cooling water outlet. The two outlets of the third three-way valve are respectively connected to the second main inlet and the second auxiliary inlet. A fourth three-way valve is also included. The second main outlet and the second auxiliary outlet are respectively connected to the two inlets of the fourth three-way valve. The outlet of the fourth three-way valve is connected to the water inlet of the cooling water pool.

[0022] The second main motor is connected to a second motor current detection circuit. When the second main motor stops, the second motor current detection circuit transmits the detection information to the control circuit, and the control circuit controls the second auxiliary motor to start so that the system can work normally.

[0023] With the above technical solution, the second main motor works during normal operation. When the second main motor is jammed or damaged and stops, the second motor current detection circuit transmits the detection information to the control circuit. The control circuit then cuts off the power supply to the second main motor and starts the second auxiliary motor to ensure the normal operation of the system.

[0024] Preferably, the cooling water pool includes a pool mounting groove and a pool body. An arc-shaped protrusion is formed on the bottom outer wall of the middle part of the pool body. Hollow elastic rubber rings are fixed on the bottom outer walls of the ends of the pool body located on both sides of the arc-shaped protrusion. A pool inlet is formed on one side of the pool and connected to the outlet of the second pump group. A pool outlet is formed on the other side of the pool. The pool outlet is located below the pool inlet. The bottom surface of the pool body is wavy to increase the flow of cooling water.

[0025] Through the above technical solution and the above structure, the main body of the pool can sway when water flows in, increasing the mobility of the water flow and further increasing heat dissipation.

[0026] To enhance the cooling effect of the cooling water pool, an S-shaped groove is provided at the bottom of the pool, dividing it into two cooling chambers. Each chamber has a sub-outlet, which connects to a fourth three-way valve. The outlet of the fourth three-way valve is the pool outlet. Airflow can also be directed through the S-shaped groove to further improve heat dissipation. Alternatively, a blade can be installed inside the cooling water pool. When water flows into the blade, it rotates, converting gravitational potential energy into kinetic energy, further achieving heat dissipation.

[0027] To further enhance the cooling effect of the cooling water tank, a third heat exchange tube assembly is added. This third heat exchange tube assembly includes several fifth and sixth tubes connected longitudinally and transversely. The third heat exchange tube assembly is at least partially in contact with the cooling water in the cooling water tank. It is connected to a second connecting pipe through which cooling gas is introduced. The first, second, and third heat exchange tube assemblies are connected via a multi-port pipe with multiple outlets, each connected to one of the three heat exchange tube assemblies. The multi-port pipe also has one inlet into which cooling gas is introduced. The third heat exchange tube assembly is connected by a lifting rod, allowing it to move vertically within the cooling water tank.

[0028] It also includes a refrigeration device, which drives the refrigerant to change from a liquid to a gaseous state in an evaporator through a compressor. During the vaporization process, heat is absorbed to produce a low-temperature cooling gas.

[0029] Compared with the prior art, the advantages of the present invention are: the present invention has a simple structure, good cooling effect, and adopts a cooling water circulation system, which can improve the efficiency of mold production; by setting a main pump and a secondary pump, when one pump stops working, the other pump takes over, increasing the fault tolerance of the system. Attached Figure Description

[0030] Figure 1 This is a block diagram of the system structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the first main pump body structure;

[0032] Figure 3 Schematic diagram of the first auxiliary pump body;

[0033] Figure 4 Schematic diagram of the second main pump body;

[0034] Figure 5 Schematic diagram of the second auxiliary pump body;

[0035] Figure 6 Schematic diagram of the nozzle structure;

[0036] Figure 7Top view of the first heat exchanger assembly;

[0037] Figure 8 for Figure 7 Cross-sectional diagram;

[0038] Figure 9 This is a top view of the second heat exchanger assembly;

[0039] Figure 10 This is a schematic diagram of a cooling tower cross-section;

[0040] Figure 11 This is the front view of the cooling water tank section.

[0041] Figure 12 This is a side view of the cross-section of the cooling water tank;

[0042] Figure label:

[0043] 1. Mold cooling water outlet;

[0044] 2. First pump unit; 201. First main pump; 2011. First main operating chamber; 2012. First main gear; 2013. First main control component; 2014. First main hole; 2015. First main gear; 2016. Output end of the first main motor; 2017. First main connector; 2018. Second main connector; 2019. First main inlet; 2020. First main outlet;

[0045] 202 First auxiliary pump; 2021 First auxiliary operating chamber; 2022 First auxiliary gear; 2023 First auxiliary control component; 2024 First auxiliary hole; 2025 First auxiliary gear; 2026 Output end of the first auxiliary motor; 2027 First auxiliary connector; 2028 Second auxiliary connector; 2029 First auxiliary inlet; 2030 First auxiliary outlet;

[0046] 3 Cooling tower; 301 Cooling main body; 302 First inlet; 303 First heat exchange tube assembly; 3031 First tube body; 3032 Second tube body; 3033 First outlet; 304 Second heat exchange tube assembly; 3041 Third tube body; 3042 Fourth tube body; 3043 Second outlet; 305 First connecting pipe; 306 External connecting pipe;

[0047] 4. Cooling water tank; 401. Water tank mounting groove; 402. Water tank body; 403. Arc-shaped protrusion; 404. Hollow elastic rubber ring; 405. S-shaped groove;

[0048] 5 Second pump unit; 501 Second main pump; 5011 Second main operating chamber; 5012 Second main gear; 5013 Second main control component; 5014 Second main bore; 5015 Second main gear; 5016 Output end of the second main motor; 5017 Third main connector; 5018 Fourth main connector; 5019 Second main inlet; 5020 Second main outlet;

[0049] 502 Second auxiliary pump; 5021 Second auxiliary operating chamber; 5022 Second auxiliary gear; 5023 Second auxiliary control component; 5024 Second auxiliary hole; 5025 Second auxiliary gear; 5026 Output end of the second auxiliary motor; 5027 Third auxiliary connector; 5028 Fourth auxiliary connector; 5029 Second auxiliary inlet; 5030 Second auxiliary outlet;

[0050] 6. Mold cooling water inlet;

[0051] 701 Temperature sensor; 702 First motor current detection circuit; 703 Second motor current detection circuit; 704 Control circuit;

[0052] 8. Nozzle; 801. Nozzle tube; 802. First splash plate; 803. First perforation; 804. Second splash plate; 805. First bend; 806. First swirl groove; 807. Second bend; 808. Second swirl groove

[0053] 901 First three-way connector; 902 Second three-way connector; 903 Third three-way connector; 904 Fourth three-way connector;

[0054] 10. Third heat exchange tube assembly; 11. Lifting rod. Detailed Implementation

[0055] To enable those skilled in the art to better understand the present invention and to more clearly define the scope of protection claimed by the present invention, the present invention will be described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present invention, and are merely a part of the embodiments of the present invention. The specific and direct descriptions of related structures are only for the convenience of understanding the present invention, and the specific features do not necessarily or directly limit the scope of the present invention.

[0056] Referring to the accompanying drawings, the present invention adopts the following technical solution: a die-casting mold water cooling circulation system, comprising a mold cooling water outlet 1, a first pump group 2, a cooling tower 3, a cooling water pool 4, a second pump group 5, and a mold cooling water inlet 6, which are connected in a circulating manner. A temperature sensor 701 is provided at the mold cooling water inlet 6. The temperature sensor 701 detects the return cooling water and controls an alarm when the temperature is too high. The positions of the cooling water pool 4 and the cooling tower 3 can be interchanged. After the cooling water pool 4 has been initially cooled, it is fed into the cooling tower 3.

[0057] Alternatively, a longer connecting pipe can be installed before cooling tower 3.

[0058] The cooling tower 3 includes a cooling body 301, a first inlet 302 opened on the top of the cooling body 301, and a nozzle 8 connected to the first inlet 302. A first heat exchange tube assembly 303 is provided on the inner wall of the cooling body 301 and below the nozzle 8. The first heat exchange tube assembly 303 includes a plurality of intersecting and interconnected first tubes 3031 and second tubes 3032. The cross-section of the first tubes 3031 and the second tubes 3032 is elliptical, and the major axis is perpendicular to the direction of the first inlet 302.

[0059] A first outlet 3033 is formed by the alternating arrangement of several first pipe bodies 3031 and several second pipe bodies 3032.

[0060] The cooling tower 3 has a second heat exchange tube assembly 304 located on the inner wall of the main body and below the first heat exchange tube assembly 303. The second heat exchange tube assembly 304 includes several intersecting and interconnected third tubes 3041 and fourth tubes 3042. The cross-sections of the fourth tubes 3042 and the third tubes 3041 are elliptical, and their major axes are perpendicular to the direction of the first inlet 302.

[0061] A second outlet 3043 is formed by the staggered arrangement of several third pipe bodies 3041 and several fourth pipe bodies 3042, and the second outlet 3043 and the second outlet 3043 are staggered.

[0062] The first heat exchange tube assembly 303 and the second heat exchange tube assembly 304 are respectively connected to a first connecting pipe 305, and the first connecting pipe 305 passes through the outer wall of the main body of the cooling tower 3 and connects to the cooling gas.

[0063] The first connecting pipe 305 consists of two parts: an inlet pipe and an outlet pipe. The outlet pipe can be directly connected to the outside world.

[0064] The cooling tower 3 has at least one obliquely arranged external pipe 306 on its inner wall and below the second heat exchange pipe assembly 304, and the external pipe 306 is connected to cooling gas.

[0065] Through the above technical solution, the elliptical arrangement of the first tube 3031, the second tube 3032, the third tube 3041, and the fourth tube 3042, with their major axes arranged laterally, can increase the contact time of the atomized water droplets on the first tube 3031, the second tube 3032, the third tube 3041, and the fourth tube 3042, and prevent them from accumulating on the first tube 3031, the second tube 3032, the third tube 3041, and the fourth tube 3042. Furthermore, since cooling gas is introduced into the first tube 3031, the second tube 3032, the third tube 3041, and the fourth tube 3042, the heat dissipation effect can be increased.

[0066] In a preferred embodiment, the nozzle 8 includes a nozzle pipe 801 connected to the first inlet 302. The nozzle pipe 801 is connected to a first splash plate 802 via a first connecting rod. The first splash plate 802 has a first through hole 803 at its center. A second splash plate 804 is connected to the bottom of the first splash plate 802 via a second connecting rod. The outer periphery of the first splash plate 802 has an upwardly curved first bend 805, and a plurality of first swirling grooves 806 are spirally formed on the first bend 805. The outer periphery of the second splash plate 804 has an upwardly curved second bend 807, and a plurality of second swirling grooves 808 are spirally formed on the second bend 807. The first swirling grooves 806 and the second swirling grooves 808 are arranged in opposite directions.

[0067] Through the above technical solution, the first splash plate 802 can increase the effect of swirling and dispersing water molecules. The smaller the water droplets, the faster the heat dissipation. Furthermore, by using two splash plates, the splashing effect is increased, thereby increasing the cooling rate.

[0068] In a preferred embodiment, the first pump group 2 includes a first main pump 201 and a first auxiliary pump 202. The first main pump 201 includes a main pump 201 body, a first main operating cavity 2011 is formed within the main pump 201 body, a first main gear 2015 wheel 2012 is fixed inside the first main operating cavity 2011, a first main control component 2013 is built into the first main operating cavity 2011, the first main control component 2013 is a round triangle and hollow with a first main hole 2014, a first main gear 2015 that meshes with the first main gear 2015 wheel 2012 is formed on the inner wall of the first main hole 2014, and a first main motor is also included. The output end 2015 of the first main motor passes through the first main gear 2012 and is fixed with the first main connector 2017. The second main connector 2018 is fixed on the inner wall of the first main hole 2014. The first main connector 2017 and the second main connector 2018 are hinged together. When the first main motor drives the first main control component 2013 to rotate, the three outer walls of the first main control component 2013 are always in contact with the inner wall of the first main operating cavity 2011. The first main pump 201 body is also provided with a first main inlet 2019 and a first main outlet 2020 that are parallel to each other and communicate with the first main operating cavity 2011.

[0069] The first auxiliary pump 202 includes a first auxiliary pump 202 body, a first auxiliary operating cavity 2021 formed within the first auxiliary pump 202 body, a first auxiliary gear 2022 fixed within the first auxiliary operating cavity 2021, a first auxiliary control component 2023 built into the first auxiliary operating cavity 2021, the first auxiliary control component 2023 being a round triangle and hollow with a first auxiliary hole 2024, a first auxiliary tooth 2025 meshing with the first auxiliary gear 2022 on the inner wall of the first auxiliary hole 2024, and also includes a first auxiliary motor, the output end 2026 of the first auxiliary motor passing through the first auxiliary pump 202 body. A first auxiliary connecting member 2027 is fixed behind the auxiliary gear 2022, and a second auxiliary connecting member 2028 is fixed on the inner wall of the first auxiliary hole 2024. The first auxiliary connecting member 2027 and the second auxiliary connecting member 2028 are hinged together. When the first auxiliary motor drives the first auxiliary control member 2023 to rotate, the three outer walls of the first auxiliary control member 2023 are always in contact with the inner wall of the first auxiliary operating cavity 2021. The first auxiliary pump 202 body also has a first auxiliary inlet 2029 and a first auxiliary outlet 2030 that are parallel to each other and communicate with the first auxiliary operating cavity 2021.

[0070] A first tee 901 is connected to the mold cooling water outlet 1. The two outlets of the first tee 901 are respectively connected to the first main inlet 2019 and the first auxiliary inlet 2029. The mold cooling water outlet 1 is also connected to a second tee 902. The first main outlet 2020 and the first auxiliary outlet 2030 are respectively connected to the two inlets of the second tee 902. The outlet of the second tee 902 is connected to the first inlet 302 of the cooling tower 3.

[0071] The first main motor is connected to a first motor current detection circuit 702. When the first main motor stops, the first motor current detection circuit 702 transmits the detection information to the control circuit 704. The control circuit 704 controls the first auxiliary motor to start so that the system can work normally.

[0072] With the above technical solution, the first main motor works during normal operation. When the first main motor is jammed or damaged and stops, the first motor current detection circuit 702 transmits the detection information to the control circuit 704. The control circuit 704 controls the power supply of the first main motor to be cut off and starts the first auxiliary motor to work, so as to ensure the normal operation of the system.

[0073] Preferably, the second pump group 5 includes a second main pump 501 and a second auxiliary pump 502. The second main pump 501 includes a second main pump 501 body, a second main operating cavity 5011 is formed within the second main pump 501 body, a second main gear 5012 is fixed inside the second main operating cavity 5011, a second main control component 5013 is built into the second main operating cavity 5011, the second main control component 5013 is a round triangle and hollow with a second main hole 5014, a second main tooth 5015 that meshes with the second main gear 5012 is formed on the inner wall of the second main hole 5014, and a second main motor is also included. The output end 5016 of the machine passes through the second main gear 5012 and is fixed with a third main connector 5017. A fourth main connector 5018 is fixed on the inner wall of the first main hole 2014. The third main connector 5017 and the fourth main connector 5018 are hinged together. When the second main motor drives the second main control component 5013 to rotate, the three outer walls of the second main control component 5013 are always in contact with the inner wall of the second main operating cavity 5011. The second main pump 501 body is also provided with a second main inlet 5019 and a second main outlet 5020 that are parallel to each other and communicate with the second main operating cavity 5011.

[0074] The second auxiliary pump 502 includes a second auxiliary pump 502 body, a second auxiliary operating cavity 5021 formed within the second auxiliary pump 502 body, a second auxiliary gear 5022 fixed within the second auxiliary operating cavity 5021, a second auxiliary control component 5023 built into the second auxiliary operating cavity 5021, the second auxiliary control component 5023 being a round triangle and hollow with a second auxiliary hole 5024, a second auxiliary tooth 5025 meshing with the second auxiliary gear 5022 being formed on the inner wall of the first auxiliary hole 5024, and also includes a second auxiliary motor, the output end 5026 of the second auxiliary motor passing through the second auxiliary pump 502. A third auxiliary connecting member 5027 is fixed behind the auxiliary gear 5022, and a fourth auxiliary connecting member 5028 is fixed on the inner wall of the second auxiliary hole 5024. The third auxiliary connecting member 5027 and the fourth auxiliary connecting member 5028 are hinged together. When the second auxiliary motor drives the second auxiliary control member 5023 to rotate, the three outer walls of the second auxiliary control member 5023 are always in contact with the inner wall of the second auxiliary operating cavity 5021. The second auxiliary pump 502 body also has a second auxiliary inlet 5029 and a second auxiliary outlet 5030 that are arranged in parallel and communicate with the second auxiliary operating cavity 5021.

[0075] A third three-way valve 903 is connected from the mold cooling water outlet 1. The two outlets of the third three-way valve 903 are respectively connected to the second main inlet 5019 and the second auxiliary inlet 5029. A fourth three-way valve 904 is also included. The second main outlet 5020 and the second auxiliary outlet 5030 are respectively connected to the two inlets of the fourth three-way valve 904. The outlet of the fourth three-way valve 904 is connected to the water pool inlet of the cooling water pool 4.

[0076] The second main motor is connected to a second motor current detection circuit 703. When the second main motor stops, the second motor current detection circuit 703 transmits the detection information to the control circuit 704. The control circuit 704 controls the second auxiliary motor to start so that the system can work normally.

[0077] With the above technical solution, the second main motor works during normal operation. When the second main motor is jammed or damaged and stops, the second motor current detection circuit 703 transmits the detection information to the control circuit 704. The control circuit 704 controls the power supply of the second main motor to be cut off and starts the second auxiliary motor to ensure the normal operation of the system.

[0078] Preferably, the cooling water pool 4 includes a pool mounting groove 401 and a pool body 402. An arc-shaped protrusion 403 is provided on the bottom outer wall of the middle part of the pool body 402. Hollow elastic rubber rings 404 are fixed on the bottom outer walls of the ends of the pool body 402 located on both sides of the arc-shaped protrusion 403. A pool inlet is provided on one side of the pool and connected to the outlet of the second pump group 5. A pool outlet is provided on the other side of the pool. The pool outlet is located below the pool inlet. The bottom surface of the pool body 402 is wavy to increase the flow of cooling water.

[0079] Through the above technical solution and the above structure, the main body of the pool 402 can sway when water flows in, increasing the mobility of the water flow and further increasing heat dissipation.

[0080] To enhance the cooling effect of the cooling water tank 4, an S-shaped groove 405 is provided at the bottom of the cooling water tank 4, dividing it into two cooling chambers. Each cooling chamber has a sub-outlet, and the two sub-outlets are connected to a fifth three-way valve. The outlet of the fifth three-way valve is the water tank outlet, which can be connected to the fifth three-way valve via a flexible hose. Air can also be blown into the S-shaped groove 405 to further enhance the heat dissipation effect. Alternatively, a blade can be installed inside the cooling water tank 4. When water flows into the blade, the blade rotates, converting gravitational potential energy into kinetic energy, further achieving heat dissipation.

[0081] To further enhance the cooling effect of the cooling water tank 4, a third heat exchange tube assembly 10 is added. The third heat exchange tube assembly 10 includes several fifth and sixth tubes connected longitudinally and transversely. The third heat exchange tube assembly 10 is at least partially in contact with the cooling water in the cooling water tank 4. The third heat exchange tube assembly 10 is connected to a second connecting pipe, through which cooling gas is introduced. The first heat exchange tube assembly 303, the second heat exchange tube assembly 304, and the third heat exchange tube assembly 10 are connected by a multi-port pipe. The multi-port pipe has multiple outlets, which are respectively connected to the first heat exchange tube assembly 303, the second heat exchange tube assembly 304, and the third heat exchange tube assembly 10. The multi-port pipe has one inlet, through which cooling gas is introduced. The third heat exchange tube assembly 10 is connected by a lifting rod 11, allowing it to move vertically within the cooling water tank 4.

[0082] It also includes a refrigeration device, which drives the refrigerant to change from a liquid to a gaseous state in an evaporator through a compressor. During the vaporization process, heat is absorbed to produce a low-temperature cooling gas.

[0083] Compared with the prior art, the advantages of the present invention are: the present invention has a simple structure, good cooling effect, and adopts a cooling water circulation system, which can improve the efficiency of mold production; by setting a main pump and a secondary pump, when one pump stops working, the other pump takes over, increasing the fault tolerance of the system.

[0084] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A water cooling circulation system for die casting molds: characterized in that: The system includes a circulating mold cooling water outlet (1), a first pump group (2), a cooling tower (3), a cooling water pool (4), a second pump group (5), and a mold cooling water inlet (6). A temperature sensor (701) is provided at the mold cooling water inlet (6). The temperature sensor (701) detects the return cooling water and controls an alarm when the temperature is too high. The cooling tower (3) includes a cooling body (301), a first inlet (302) opened on the top of the cooling body (301), and a nozzle (8) connected to the first inlet (302). A first heat exchange tube assembly (303) is provided on the inner wall of the cooling body (301) and below the nozzle (8). The first heat exchange tube assembly (303) includes a plurality of intersecting first tubes (3031) and second tubes (3032). The cross-section of the first tubes (3031) and the second tubes (3032) is elliptical, and the major axis is perpendicular to the direction of the first inlet (302). A first outlet (3033) is formed by a plurality of first pipe bodies (3031) and a plurality of second pipe bodies (3032) interleaved. The cooling tower (3) has a second heat exchange tube assembly (304) on its inner wall and below the first heat exchange tube assembly (303). The second heat exchange tube assembly (304) includes several intersecting third tubes (3041) and fourth tubes (3042). The cross-sections of the fourth tubes (3042) and the third tubes (3041) are elliptical, and their major axes are perpendicular to the direction of the first inlet (302). A second outlet (3043) is formed by interleaving several third pipe bodies (3041) and several fourth pipe bodies (3042), and the second outlet (3043) and the second outlet (3043) are staggered. The first heat exchange tube assembly (303) and the second heat exchange tube assembly (304) are respectively connected to a first connecting pipe (305), and the first connecting pipe (305) passes through the outer wall of the main body of the cooling tower (3) and connects to the cooling gas. The cooling tower (3) has at least one obliquely arranged external pipe (306) on its inner wall and below the second heat exchange pipe assembly (304), and the external pipe (306) is connected to cooling gas.

2. The water cooling circulation system for die casting molds according to claim 1, characterized in that: The nozzle (8) includes a nozzle pipe (801) connected to the first inlet (302). The nozzle pipe (801) is connected to the first splash plate (802) via a first connecting rod. The first splash plate (802) has a first through hole (803) at its center. The first splash plate (802) is connected to the second splash plate (804) via a second connecting rod below it. The first splash plate (802) has an arc-shaped upward first curved portion (805) on its outer periphery. The first curved portion (805) has a plurality of first swirl grooves (806) spirally formed on it. The second splash plate (804) has an arc-shaped upward second curved part (807) on its outer periphery. The second curved part (807) is spirally provided with a plurality of second swirling grooves (808). The first swirling groove (806) and the second swirling groove (808) are arranged in opposite directions.

3. The water cooling circulation system for die casting molds according to claim 1, characterized in that: The first pump set (2) includes a first main pump (201) and a first auxiliary pump (202). The first main pump (201) includes a first main pump (201) body, a first main operating cavity (2011) is opened in the first main pump (201) body, a first main gear is fixed in the first main operating cavity (2011), a first main control component (2013) is built into the first main operating cavity (2011), the first main control component (2013) is a round triangle and hollow with a first main hole (2014), a first main tooth that meshes with the first main gear is opened on the inner wall of the first main hole (2014), and a first main motor is also included. The first main motor outputs... After the outlet passes through the first main gear, a first main connector (2017) is fixed thereon. A second main connector (2018) is fixed on the inner wall of the first main hole (2014). The first main connector (2017) and the second main connector (2018) are hinged together. When the first main motor drives the first main control component (2013) to rotate, the three outer walls of the first main control component (2013) are always in contact with the inner wall of the first main operating cavity (2011). The first main pump (201) body is also provided with a first main inlet (2019) and a first main outlet (2020) that are parallel to each other and communicate with the first main operating cavity (2011). The first auxiliary pump (202) includes a first auxiliary pump (202) body, a first auxiliary operating cavity (2021) is formed in the first auxiliary pump (202) body, a first auxiliary gear (2022) is fixed in the first auxiliary operating cavity (2021), a first auxiliary control component (2023) is built into the first auxiliary operating cavity (2021), the first auxiliary control component (2023) is a round triangle and hollow with a first auxiliary hole (2024), a first auxiliary tooth (2025) that meshes with the first auxiliary gear (2022) is formed on the inner wall of the first auxiliary hole (2024), and a first auxiliary motor is also included, the output end (2026) of the first auxiliary motor passes through the first auxiliary pump (202) body. A first auxiliary connecting piece (2027) is fixed behind a gear (2022), and a second auxiliary connecting piece (2028) is fixed on the inner wall of the first auxiliary hole (2024). The first auxiliary connecting piece (2027) and the second auxiliary connecting piece (2028) are hinged together. When the first auxiliary motor drives the first auxiliary control piece (2023) to rotate, the three outer walls of the first auxiliary control piece (2023) are always in contact with the inner wall of the first auxiliary operating cavity (2021). The first auxiliary pump (202) body is also provided with a first auxiliary inlet (2029) and a first auxiliary outlet (2030) that are arranged in parallel and communicate with the first auxiliary operating cavity (2021). A first tee (901) is connected to the mold cooling water outlet (1). The two outlets of the first tee (901) are respectively connected to the first main inlet (2019) and the first auxiliary inlet (2029). A second tee (902) is also included. The first main outlet (2020) and the first auxiliary outlet (2030) are respectively connected to the two inlets of the second tee (902). The outlet of the second tee (902) is connected to the first inlet (302) of the cooling tower (3). The first main motor is connected to a first motor current detection circuit (702). When the first main motor stops, the first motor current detection circuit (702) transmits the detection information to the control circuit (704). The control circuit (704) controls the first auxiliary motor to start so that the system can work normally.

4. The water cooling circulation system for die casting molds according to claim 1, characterized in that: The second pump set (5) includes a second main pump (501) and a second auxiliary pump (502). The second main pump (501) includes a second main pump (501) body, a second main operating cavity (5011) is opened in the second main pump (501) body, a second main gear (5012) is fixed in the second main operating cavity (5011), a second main control component (5013) is built into the second main operating cavity (5011), the second main control component (5013) is a round triangle and hollow with a second main hole (5014), a second main tooth (5015) that meshes with the second main gear (5012) is opened on the inner wall of the second main hole (5014), and a second main motor is also included. The output end (5016) of the machine passes through the second main gear (5012) and is fixed with a third main connector (5017). A fourth main connector (5018) is fixed on the inner wall of the first main hole (2014). The third main connector (5017) and the fourth main connector (5018) are hinged together. When the second main motor drives the second main control component (5013) to rotate, the three outer walls of the second main control component (5013) are always in contact with the inner wall of the second main operating cavity (5011). The second main pump (501) body is also provided with a second main inlet (5019) and a second main outlet (5020) that are parallel to each other and communicate with the second main operating cavity (5011). The second auxiliary pump (502) includes a second auxiliary pump (502) body, a second auxiliary operating cavity (5021) is formed inside the second auxiliary pump (502) body, a second auxiliary gear (5022) is fixed inside the second auxiliary operating cavity (5021), a second auxiliary control component (5023) is built into the second auxiliary operating cavity (5021), the second auxiliary control component (5023) is a round triangle and hollow with a second auxiliary hole (5024), a second auxiliary tooth (5025) that meshes with the second auxiliary gear (5022) is formed on the inner wall of the first auxiliary hole (5024), and a second auxiliary motor is also included, the output end (5026) of the second auxiliary motor passes through the first auxiliary pump (502) body. A third connecting piece (5027) is fixed behind the second gear (5022), and a fourth connecting piece (5028) is fixed on the inner wall of the second hole (5024). The third connecting piece (5027) and the fourth connecting piece (5028) are hinged together. When the second motor drives the second control piece (5023) to rotate, the three outer walls of the second control piece (5023) are always in contact with the inner wall of the second operating cavity (5021). The second pump (502) body is also provided with a second inlet (5029) and a second outlet (5030) that are parallel to each other and communicate with the second operating cavity (5021). A third tee (903) is connected from the mold cooling water outlet (1). The two outlets of the third tee (903) are respectively connected to the second main inlet (5019) and the second auxiliary inlet (5029). A fourth tee (904) is also included. The second main outlet (5020) and the second auxiliary outlet (5030) are respectively connected to the two inlets of the fourth tee (904). The outlet of the fourth tee (904) is connected to the water pool inlet of the cooling water pool (4). The second main motor is connected to a second motor current detection circuit (703). When the second main motor stops, the second motor current detection circuit (703) transmits the detection information to the control circuit (704). The control circuit (704) controls the second auxiliary motor to start so that the system can work normally.

5. The water cooling circulation system for die casting molds according to claim 1, characterized in that: The cooling water pool (4) includes a pool mounting groove (401) and a pool body (402). An arc-shaped protrusion (403) is provided on the bottom outer wall of the middle part of the pool body (402). Hollow elastic rubber rings (404) are fixed on the bottom outer walls of the ends of the pool body (402) located on both sides of the arc-shaped protrusion (403). A pool inlet connected to the outlet of the second pump group (5) is provided on one side of the pool. A pool outlet is provided on the other side of the pool. The pool outlet is located below the pool inlet. The bottom surface of the pool body (402) is wavy to increase the flow of cooling water.

6. The water cooling circulation system for die casting molds according to claim 5, characterized in that: The bottom of the cooling water pool (4) is provided with an S-shaped groove (405) facing upwards, so that the cooling water pool (4) is divided into two cooling chambers. Each cooling chamber has a sub-outlet. The two sub-outlets are connected to a fourth tee (904). The outlet of the fourth tee (904) is the pool outlet.

7. The water cooling circulation system for die casting molds according to claim 6, characterized in that: It also includes a third heat exchange tube assembly (10), which includes a plurality of fifth and sixth tubes that are connected longitudinally and transversely. The third heat exchange tube assembly (10) is at least partially in contact with the cooling water in the cooling water pool (4). The third heat exchange tube assembly (10) is connected to a second connecting pipe, and cooling gas is introduced into the second connecting pipe. The first heat exchange tube assembly (303), the second heat exchange tube assembly (304) and the third heat exchange tube assembly (10) are connected by a multi-port pipe. The multi-port pipe is provided with multiple outlets, which are respectively connected to the first heat exchange tube assembly (303), the second heat exchange tube assembly (304) and the third heat exchange tube assembly (10). The multi-port pipe is provided with an inlet, and cooling gas is introduced into the inlet.

8. The water cooling circulation system for die casting molds according to claim 7, characterized in that: The third heat exchange tube assembly (10) is connected by a lifting rod (11) so that the third heat exchange tube assembly (10) can move up and down in the cooling water pool (4).

9. The water cooling circulation system for die casting molds according to any one of claims 1-7, characterized in that: It also includes a refrigeration device, which drives the refrigerant to change from a liquid to a gaseous state in an evaporator through a compressor. During the vaporization process, heat is absorbed to produce a low-temperature cooling gas.

Images