Indirect cooling type mold temperature regulator

Abstract

The invention relates to an indirect cooling type mold temperature adjusting machine which comprises a water tank (2) arranged at the highest position, and specific system water is injected into the water tank (2) through a manual water supplementing opening in a top cover of the water tank (2); a water level difference is formed through a booster pump exhaust bypass valve (31), so that the system water naturally flows into the booster pump (4); the booster pump (4) is arranged on one side of the heating cylinder (12) and is used for carrying out medium heating treatment; a cooling solenoid valve (27) provided at the cooling water outlet, the cooling solenoid valve (27) performing a medium cooling process by flowing the cooling water through the plate heat exchanger (5); the compressed air manual ball valve (29) is used for closing compressed air supply of the medium outlet main pipe manual ball valve (18) when the medium temperature is lower than a preset temperature in a standby state; and a booster pump bypass flow regulating valve (8) connected to a bypass of the water tank (2) is arranged at the outlet position of the booster pump (4).

Description

Technical Field

[0001] The present invention relates to the field of temperature control machines, in particular to the field of mold temperature regulators, and specifically refers to an indirect cooling type mold temperature regulator. Background Art

[0002] In the optical and electronics industries, due to the high cleanliness requirements of their products and the need to consider mold protection (anti-scaling and anti-rust), there are specific requirements for the system water (media water) used in mold temperature controllers (such as the use of specially treated purified water). This requires the use of an independent water supply system (manual or automatic) separate from the cooling water to ensure that the system water in the mold temperature controller is not contaminated by external factors. Furthermore, during mold changes, the system water must be recovered by means such as compressed air drainage and returned to a storage tank, rather than being discharged to the cooling water outlet as is typically the case.

[0003] Based on this, in view of the shortcomings of the current existing technology, it is very necessary to design a mold temperature regulator that can meet the temperature requirements of the mold (such as high-temperature media water) and the specific requirements of the system water when the mold is used. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide an indirect cooling type mold temperature regulator.

[0005] In order to achieve the above object, the indirect cooling mold temperature control machine of the present invention is as follows:

[0006] The main feature of the indirect cooling mold temperature regulator is that the method comprises the following steps:

[0007] The regulating machine comprises:

[0008] The water tank is placed at the highest position, and specific system water is injected into the water tank through the manual water filling port on the top cover of the water tank;

[0009] A booster pump is provided at the lower part of the water tank, and a booster pump exhaust bypass valve is provided at the outlet of the booster pump. A water level difference is formed through the booster pump exhaust bypass valve, so that the system water naturally flows into the booster pump;

[0010] A booster pump is provided on one side of the heating cylinder. When the booster pump is in operation, it drives the system water in the water tank to be transported to the heating cylinder for media heating treatment.

[0011] The cooling solenoid valve installed on the cooling water outlet cools the media by flowing cooling water through the plate heat exchanger;

[0012] Compressed air manual ball valve, used to close the compressed air supply to the media outlet manual ball valve when the media temperature is lower than the preset temperature in standby mode; and

[0013] A booster pump bypass flow regulating valve connected to a bypass of the water tank is provided at the outlet of the booster pump. The booster pump bypass flow regulating valve measures the pressure value at the outlet of the booster pump through a system water pressure sensor and adjusts the current outlet pressure to the system pressure value required for the set temperature of the media.

[0014] Preferably, the water tank is provided with a first cooling coil, a second cooling coil, an anti-splash elbow and a double float switch, wherein the first cooling coil is respectively connected to the outlet of the boost pump and the boost pump bypass flow regulating valve, and is used for pre-cooling the heat medium discharged from the heating cylinder to the water tank; the second cooling coil is respectively connected to the cooling water inlet and the cooling water outlet, and is used for long-term cooling of the system water in the water tank; the anti-splash elbow is arranged at the overflow port position of the water tank, and is used to prevent the overflow of the system water caused by air flow fluctuations during compression drainage; the upper ball of the double float switch is used to control the full water level of the water tank, and the lower ball is used to control the low liquid level of the water tank; and a liquid level gauge is arranged on the outside of the water tank.

[0015] Preferably, when the regulator needs to perform a media cooling operation, the heating tube stops working and the cooling solenoid valve is opened at the same time or the cooling solenoid valve is opened at intervals according to PID control, so that cooling water flows through the plate heat exchanger to cool the media until the set temperature is reached.

[0016] Preferably, the system water pressure sensor is connected to one side of the heating cylinder, the other side of the heating cylinder is connected to the media pump, the heating cylinder is provided with an overheating preventer, and the upper part of the heating cylinder is also connected to a single float switch, the other side of the single float switch is connected to an exhaust solenoid valve, and the exhaust solenoid valve is connected to the booster pump bypass flow regulating valve through a needle valve; when the booster pump is running and the exhaust solenoid valve is opened, the media pump immediately obtains system water through the media exhaust bypass pipe provided at the outlet of the media pump, and after the single float switch obtains a full water signal, the media pump starts to operate, and after completing the initial exhaust operation, the exhaust solenoid valve is closed.

[0017] Preferably, when the regulator needs to perform a medium heating operation, the heating tube performs heating according to the set medium temperature, and when the medium temperature is 5°C away from reaching the set temperature, the medium temperature is controlled by PID until the set temperature is reached; at the same time, before the heating tube enters PID control, the exhaust solenoid valve is opened at a preset time interval to discharge the air in the internal pipeline.

[0018] Preferably, when the regulator needs to perform compressed air drainage processing, first close the media outlet main manual ball valve, and open the compressed air manual ball valve to supply compressed air, then click the air drainage button on the operation panel, and after a few seconds, the exhaust solenoid valve opens. The compressed air flows through the one-way valve located at the compressed air inlet from the first branch through the media branch manual ball valve, the mold, the media loop filter, the media loop one-way valve, the plate heat exchanger, and through the second branch through the heating cylinder, the single float switch and the first cooling coil, and then the compressed media is discharged into the water tank, and the pressure of the media and air when entering the water tank is reduced through the first cooling coil, thereby reducing the disturbance to the media in the water tank.

[0019] Preferably, the needle valve is arranged at the outlet position of the exhaust solenoid valve, and the amount of drainage delivered by the heating cylinder to the water tank is changed by adjusting the needle valve.

[0020] Preferably, a system water one-way valve and a system water safety valve are provided between the booster pump and the heating cylinder, wherein the system water one-way valve is used to prevent the high-temperature and high-pressure medium in the heating cylinder from releasing pressure to the water tank through the pipeline when the regulator is in a shutdown state; the system water safety valve is used to prevent the pressure relief port from opening and slowly releasing pressure through the pipeline connected to the water tank when the regulator is in a shutdown state and the pressure of the high-temperature medium in the heating cylinder is too high and exceeds a set value.

[0021] Preferably, a heat exchanger bypass flow regulating valve is provided on the media return pipeline of the regulator, and the heat exchanger bypass flow regulating valve is located at the lower part of the plate heat exchanger. By manually adjusting the heat exchanger bypass flow regulating valve, the media flow flowing through the plate heat exchanger is changed, thereby controlling the cooling capacity of the regulator.

[0022] Preferably, when the mold position is much higher than the water tank position, the exhaust solenoid valve and the system water one-way valve are used to block the media path flowing back into the water tank, thereby preventing the system water in the water tank from overflowing.

[0023] The indirect-cooling mold temperature regulator employing this invention not only meets the mold's operating temperature requirements but also meets the specific system water requirements during mold operation. Therefore, it fully leverages its advantages in both temperature control and cooling, resulting in more precise temperature control and higher cooling efficiency. Furthermore, in the event of sudden damage or power loss, the addition of a check valve and a safety valve at the booster pump outlet significantly mitigates potential safety hazards such as elevated water tank temperature and damage to the cooling water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the indirect cooling mold temperature regulator of the present invention.

[0025] Reference numerals

[0026] 1 Liquid level gauge

[0027] 2 water tanks

[0028] 3 single float switch

[0029] 4 Booster pump

[0030] 5 Plate heat exchanger

[0031] 6 Media circuit filter

[0032] 7 Booster pump outlet check valve

[0033] 8 Booster pump bypass flow control valve

[0034] 9 Exhaust solenoid valve

[0035] 10 System water pressure sensor

[0036] 11 Overheat preventer

[0037] 12 heating cartridges

[0038] 13 temperature probe

[0039] 14 media pumps

[0040] 15 Media out safety valve

[0041] 16 system water safety valve

[0042] 17 needle valve

[0043] 18 medium outlet main manual ball valve

[0044] 19 first cooling coil

[0045] 20 Second cooling coil

[0046] 21 splash-proof elbow

[0047] 22 double float switch

[0048] 23 Media bypass flow control valve

[0049] 24 Cooling water inlet filter

[0050] 25 one-way valve

[0051] 26 Media circuit check valve

[0052] 27 Cooling solenoid valve

[0053] 28 media out pressure sensor

[0054] 29 Compressed air manual ball valve

[0055] 30 media divergence manual ball valve

[0056] 31 Booster pump exhaust bypass valve

[0057] 32 media exhaust bypass pipe

[0058] 33 Heat exchanger bypass flow control valve

[0059] 34 System water check valve

[0060] 35 Water tank drain stop valve DETAILED DESCRIPTION

[0061] In order to more clearly describe the technical content of the present invention, further description is given below in conjunction with specific embodiments.

[0062] Before describing in detail embodiments according to the present invention, it should be noted that, hereinafter, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, whereby a process, method, article, or apparatus comprising a list of elements includes not only those elements, but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0063] The indirect cooling mold temperature regulator, wherein the regulator comprises:

[0064] The water tank 2 is placed at the highest position, and specific system water is injected into the water tank 2 through the manual water filling port on the top cover of the water tank 2;

[0065] A booster pump 4 is provided at the lower part of the water tank 2. The booster pump 4 is provided with a booster pump exhaust bypass valve 31 at the outlet position. The booster pump exhaust bypass valve 31 forms a water level difference, so that the system water naturally flows into the booster pump 4.

[0066] The booster pump 4 is provided on one side of the heating cylinder 12. When the booster pump 4 is in operation, it drives the system water in the water tank 2 to be transported to the heating cylinder 12 for media heating treatment.

[0067] The cooling solenoid valve 27 provided on the cooling water outlet cools the medium by flowing the cooling water through the plate heat exchanger 5;

[0068] The compressed air manual ball valve 29 is used to close the compressed air supply of the media outlet main manual ball valve 18 when the medium temperature is lower than the preset temperature in the standby state; and

[0069] A booster pump bypass flow regulating valve 8 connected to the bypass of the water tank 2 is provided at the outlet of the booster pump 4. The booster pump bypass flow regulating valve 8 measures the pressure value at the outlet of the booster pump 4 through the system water pressure sensor 10, and adjusts the current outlet pressure to the system pressure value required for the set temperature of the media.

[0070] As a preferred embodiment of the present invention, the water tank 2 is provided with a first cooling coil 19, a second cooling coil 20, an anti-splash elbow 21 and a double float switch 22, wherein the first cooling coil 19 is respectively connected to the outlet of the boost pump 4 and the boost pump bypass flow regulating valve 8, and is used to pre-cool the heat medium discharged from the heating cylinder 12 to the water tank 2; the second cooling coil 20 is respectively connected to the cooling water inlet and the cooling water outlet, and is used to cool the system water in the water tank 2 for a long time; the anti-splash elbow 21 is arranged at the overflow port position of the water tank 2, and is used to prevent the system water from overflowing due to air flow fluctuations during compression drainage; the upper ball of the double float switch 22 is used to control the full water level of the water tank 2, and the lower ball is used to control the low liquid level of the water tank 2; and the liquid level gauge 1 is arranged on the outside of the water tank 2.

[0071] As a preferred embodiment of the present invention, when the regulator needs to perform a media cooling operation, the heating tube 12 stops working and at the same time opens the cooling solenoid valve 27 or opens the cooling solenoid valve 27 according to a PID control interval, so that cooling water flows through the plate heat exchanger 5 to perform media cooling processing until the set temperature is reached.

[0072] As a preferred embodiment of the present invention, the system water pressure sensor 10 is connected to one side of the heating cylinder 12, the other side of the heating cylinder 12 is connected to the media pump 14, the heating cylinder 12 is provided with an overheating preventer 11, and the upper part of the heating cylinder 12 is also connected to the single float switch 3, the other side of the single float switch 3 is connected to the exhaust solenoid valve 9, and the exhaust solenoid valve 9 is connected to the booster pump bypass flow regulating valve 8 through the needle valve 17; when the booster pump 4 is running and the exhaust solenoid valve 9 is open, the media pump 14 immediately obtains system water through the media exhaust bypass pipe 32 provided at the outlet position of the media pump 14. After the single float switch 3 obtains a full water signal, the media pump 14 starts to operate, and after completing the initial exhaust operation, the exhaust solenoid valve 9 is closed.

[0073] As a preferred embodiment of the present invention, when the regulator needs to perform a medium heating operation, the heating tube 12 performs heating according to the set medium temperature, and when the medium temperature is 5°C away from reaching the set temperature, the medium temperature is controlled by PID until the set temperature is reached; at the same time, before the heating tube 12 enters PID control, the exhaust solenoid valve 9 is opened at a preset time interval to discharge the air in the internal pipeline.

[0074] As a preferred embodiment of the present invention, when the regulator needs to perform compressed air drainage processing, first close the media outlet main manual ball valve 18, and open the compressed air manual ball valve 29 to supply compressed air, then click the air drainage button on the operation panel, and after a few seconds, the exhaust solenoid valve 9 opens. The compressed air passes through the one-way valve 25 located at the compressed air inlet and flows from the first branch through the media branch manual ball valve 30, the mold, the media loop filter 6, the media loop one-way valve 26, the plate heat exchanger 5, and through the second branch through the heating tube 12, the single float switch 3 and the first cooling coil 19, and then the compressed media is discharged into the water tank 2, and the pressure of the media and air when entering the water tank 2 is reduced through the first cooling coil 19, thereby reducing the disturbance to the media in the water tank 2.

[0075] As a preferred embodiment of the present invention, the needle valve 17 is arranged at the outlet position of the exhaust solenoid valve 9. By adjusting the needle valve 17, the amount of drainage delivered by the heating tube 12 to the water tank 2 is changed.

[0076] As a preferred embodiment of the present invention, a system water one-way valve 34 and a system water safety valve 16 are provided between the booster pump 4 and the heating cylinder 12, wherein the system water one-way valve 34 is used to prevent the high-temperature and high-pressure medium in the heating cylinder 12 from releasing pressure to the water tank 2 through the pipeline when the regulator is in a shutdown state; the system water safety valve 16 is used to prevent the pressure relief port from opening and slowly releasing pressure through the pipeline connected to the water tank 2 when the regulator is in a shutdown state and the pressure of the high-temperature medium in the heating cylinder 12 is too high and exceeds the set value.

[0077] As a preferred embodiment of the present invention, a heat exchanger bypass flow regulating valve 33 is provided on the media return pipeline of the regulator, and the heat exchanger bypass flow regulating valve 33 is located at the lower part of the plate heat exchanger 5. By manually adjusting the heat exchanger bypass flow regulating valve 33, the media flow flowing through the plate heat exchanger 5 is changed, thereby controlling the cooling capacity of the regulator.

[0078] As a preferred embodiment of the present invention, when the mold position is much higher than the water tank 2, the exhaust solenoid valve 9 and the system water one-way valve 34 are used to block the media path flowing back into the water tank 2, thereby preventing the system water in the water tank 2 from overflowing.

[0079] See also Figure 1 As shown, the working principle of the indirect cooling mold temperature regulator is as follows:

[0080] 1. Preparation for startup: The water tank 2 is at the highest position of the device. The user injects specific system water into the water tank 2 through the manual water filling port on the top cover of the water tank 2. Since the booster pump 4 outlet is provided with a booster pump exhaust bypass valve 31, the system water naturally flows into the booster pump head by utilizing the water level difference.

[0081] 2. Initial Startup: Booster pump 4 operates, pumping system water from water tank 2 to heating cylinder 12. Simultaneously, exhaust solenoid valve 9 opens. Because the outlet of media pump 14 is equipped with a media exhaust bypass pipe 32, media pump 14 immediately receives system water. Once the single float switch 3 receives a full water signal, media pump 14 operates. After the initial exhaust time expires, exhaust solenoid valve 9 closes.

[0082] 3. Media Heating: Based on the set media temperature, the heating tube within the heating tube 12 operates, heating the media. After reaching the set temperature -5°C, the media temperature enters PID control until it reaches the set temperature. During the media heating process, before entering PID control, the exhaust solenoid valve 9 opens at intervals of a preset time t (30 seconds by default) to exhaust air from the piping system.

[0083] 4. Media cooling: According to the set media temperature, the heating pipe stops working, the cooling solenoid valve 27 opens or opens at intervals according to PID control, and cooling water flows through the plate heat exchanger 5, and the media is cooled until the set temperature is reached.

[0084] 5. Compressed air drainage: When the regulator is in standby mode and the media temperature is below 40°C, close the media outlet main manual ball valve 18 and open the compressed air manual ball valve 29 to supply compressed air. Click the air drainage button on the operation panel. After a few seconds, the exhaust solenoid valve 9 opens the compressed air. The compressed air then flows through the one-way valve 25 at the compressed air inlet, the media branch manual ball valve 30, the mold, the media circuit filter 6, the media circuit one-way valve 26, the plate heat exchanger 5, the heating cylinder 12, the single float switch 3, and the first cooling coil 19, and is discharged into the water tank 2.

[0085] 6. The outlet of booster pump 4 is equipped with a bypass connected to water tank 2, a booster pump bypass flow control valve 8, and a system water pressure sensor 10. System water pressure sensor 10 measures the system pressure at the outlet of booster pump 4. By manually adjusting booster pump bypass flow control valve 8 and referring to Table 1 below, the system pressure at the outlet of booster pump 4 can be adjusted to the required system pressure for the set media temperature, thereby ensuring that the media does not vaporize after reaching the set temperature.

[0086] Table 1

[0087] Set temperature (℃) 100 110 120 130 140 150 160 170 180 Booster pump discharge pressure (MPa) 0.2 0.3 0.3 0.4 0.5 0.6 0.7 0.9 1 Saturated steam pressure (MPa) 0 0 0.1 0.2 0.3 0.4 0.5 0.7 0.9

[0088] 7. The media return line is provided with a heat exchanger bypass flow regulating valve 33. Manual adjustment of the valve can change the media flow through the plate heat exchanger 5, thereby overall controlling the cooling capacity of the regulator.

[0089] 8. The outlet of the exhaust solenoid valve 9 (the direction of the pipe connected to the water tank) is equipped with a needle valve 17. Manual adjustment of the valve can change the amount of water discharged from the heating cylinder 12 to the water tank 2, thereby controlling the influence of the exhaust action on the fluctuation of the media temperature and the float switch signal during the media heating process.

[0090] 9. A first cooling coil 19 is provided in the water tank 2, and its functions are: ① pre-cooling the heat medium discharged from the heating cylinder 12 to the water tank 2; ② reducing the pressure of the medium and air entering the water tank 2 when the compressed air is discharged, thereby reducing the disturbance to the medium in the water tank 2.

[0091] 10. A second cooling coil 20 is provided in the water tank 2, and its function is to cool the system water in the water tank 2 for a long time, so that the average temperature is always below 40°C, reduce the natural evaporation of the system water, and reduce the frequency of water replenishment.

[0092] 11. A double float switch 22 is provided in the water tank 2, which has the following functions: ① The upper ball controls the full water level of the water tank 2 to prevent overflow due to excessive water addition to the system; ② The lower ball controls the low liquid level of the water tank 2 to prevent the booster pump 4, media pump 14, etc. from running due to water shortage.

[0093] 12. A system water one-way valve 34 and a system water safety valve 16 are respectively provided on the pipeline connecting the booster pump 4 to the heating cylinder 12. The function of the system water one-way valve 34 is to prevent the high-temperature and high-pressure medium in the heating cylinder 12 from releasing pressure to the water tank 2 through the heating cylinder 12 when the machine suddenly stops (for example, due to power failure), causing the system water in the water tank 2 to fluctuate sharply; the function of the system water safety valve 16 is to prevent the high-temperature medium pressure in the heating cylinder from being too high when the machine suddenly stops (for example, due to power failure). After the pressure exceeds the set value, the pressure relief port of the system water safety valve 16 opens, and the pressure is slowly released into the water tank 2 through the pipeline connected to the water tank 2, thereby ensuring that the medium water in the heating cylinder 12 will not be completely vaporized and preventing scaling of the heating pipe and the like.

[0094] 13. The functions of the exhaust solenoid valve 9 and the system water one-way valve 34 also include: when the mold position is much higher than the water tank 2, they can block the media path backflowing into the water tank 2, thereby effectively avoiding overflow of the system water in the water tank 2 and causing waste.

[0095] 14. A splash-proof elbow 21 is provided at the front end of the overflow port in the water tank 2. Its function is to prevent the system water that may roll with the air flow fluctuation from splashing into the overflow port and causing unnecessary overflow when compressed air is discharged.

[0096] It should be understood that each part of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution device.

[0097] Those skilled in the art will understand that all or part of the steps of the method for implementing the above-mentioned embodiment can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one of the steps of the method embodiment or a combination thereof.

[0098] Throughout this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "embodiment" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0099] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0100] The indirect-cooling mold temperature regulator employing this invention not only meets the mold's operating temperature requirements but also meets the specific system water requirements during mold operation. Therefore, it fully leverages its advantages in both temperature control and cooling, resulting in more precise temperature control and higher cooling efficiency. Furthermore, in the event of sudden damage or power loss, the addition of a check valve and a safety valve at the booster pump outlet significantly mitigates potential safety hazards such as elevated water tank temperature and damage to the cooling water pump.

[0101] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations may be made without departing from the spirit and scope of the present invention. Accordingly, the specification and drawings are to be regarded as illustrative rather than restrictive.

Claims

1. An indirect cooling mold temperature regulator, characterized in that: The regulating machine comprises: The water tank (2) is placed at the highest position, and specific system water is injected into the water tank (2) through a manual water filling port on the top cover of the water tank (2); A booster pump (4) is provided at the lower part of the water tank (2), wherein the booster pump (4) is provided with a booster pump exhaust bypass valve (31) at the outlet position, and a water level difference is formed by the booster pump exhaust bypass valve (31), so that the system water naturally flows into the booster pump (4); A booster pump (4) is provided on one side of the heating cylinder (12). When the booster pump (4) is in operation, it drives the system water in the water tank (2) to be transported to the heating cylinder (12) for medium heating treatment; A cooling solenoid valve (27) provided on the cooling water outlet performs a medium cooling process by passing the cooling water through the plate heat exchanger (5); A compressed air manual ball valve (29) is used to close the compressed air supply of the medium outlet main manual ball valve (18) when the medium temperature is lower than a preset temperature in a standby state; and A booster pump bypass flow regulating valve (8) connected to a bypass of the water tank (2) is provided at the outlet of the booster pump (4). The booster pump bypass flow regulating valve (8) measures the pressure value at the outlet of the booster pump (4) through a system water pressure sensor (10) and regulates the current outlet pressure to the system pressure value required for the set temperature of the medium.

2. The indirect cooling mold temperature control machine according to claim 1, characterized in that: The water tank (2) is provided with a first cooling coil (19), a second cooling coil (20), an anti-splash elbow (21) and a double float switch (22), wherein the first cooling coil (19) is respectively connected to the outlet of the booster pump (4) and the booster pump bypass flow regulating valve (8) for pre-cooling the heat medium discharged from the heating cylinder (12) to the water tank (2); the second cooling coil (20) is respectively connected to the cooling water inlet and the cooling water outlet for long-term cooling of the system water in the water tank (2); the anti-splash elbow (21) is provided at the overflow port position of the water tank (2) for preventing the system water from overflowing due to air flow fluctuations during compression drainage; the upper ball of the double float switch (22) is used to control the full water level of the water tank (2), and the lower ball is used to control the low liquid level of the water tank (2); and a liquid level gauge (1) is provided on the outside of the water tank (2).

3. The indirect cooling mold temperature control machine according to claim 1, characterized in that: When the regulator needs to perform a medium cooling operation, the heating cylinder (12) stops working and simultaneously opens the cooling solenoid valve (27) or opens the cooling solenoid valve (27) at intervals according to PID control, so that cooling water flows through the plate heat exchanger (5) to cool the medium until the set temperature is reached.

4. The indirect cooling mold temperature control machine according to claim 3, characterized in that: A heat exchanger bypass flow regulating valve (33) is provided on the media return line of the regulator, and the heat exchanger bypass flow regulating valve (33) is located at the lower part of the plate heat exchanger (5). By manually adjusting the heat exchanger bypass flow regulating valve (33), the media flow passing through the plate heat exchanger (5) is changed, thereby controlling the cooling capacity of the regulator.

5. The indirect cooling mold temperature control machine according to claim 1, characterized in that: The system water pressure sensor (10) is connected to one side of the heating cylinder (12), and the other side of the heating cylinder (12) is connected to the media pump (14). An overheating preventer (11) is provided on the heating cylinder (12), and the upper part of the heating cylinder (12) is also connected to the single float switch (3). The other side of the single float switch (3) is connected to the exhaust solenoid valve (9), and the exhaust solenoid valve (9) is connected to the booster pump bypass flow regulating valve (8) through the needle valve (17); when the booster pump (4) is running and the exhaust solenoid valve (9) is opened, the media pump (14) immediately obtains system water through the media exhaust bypass pipe (32) provided at the outlet position of the media pump (14). After the single float switch (3) obtains a full water signal, the media pump (14) starts to operate, and after completing the initial exhaust operation, the exhaust solenoid valve (9) is closed.

6. The indirect cooling mold temperature control machine according to claim 5, characterized in that: When the regulator needs to perform a medium heating operation, the heating cylinder (12) performs heating according to the set medium temperature, and when the medium temperature is 5°C away from reaching the set temperature, the medium temperature is controlled by PID until the set temperature is reached; at the same time, before the heating cylinder (12) enters PID control, the exhaust solenoid valve (9) is opened at a preset time interval to exhaust the air in the internal pipeline.

7. The indirect cooling mold temperature control machine according to claim 5, characterized in that: When the regulator needs to perform compressed air drainage processing, first close the media outlet main manual ball valve (18), open the compressed air manual ball valve (29) to supply compressed air, and then click the air drainage button on the operation panel. After a few seconds, the exhaust solenoid valve (9) opens, and the compressed air flows through the one-way valve (25) located at the compressed air inlet from the first branch through the media branch manual ball valve (30), the mold, the media loop filter (6), the media loop one-way valve (26), the plate heat exchanger (5), and through the second branch through the heating cylinder (12), the single float switch (3) and the first cooling coil (19), and then the compressed media is discharged into the water tank (2), and the pressure of the media and air when entering the water tank (2) is reduced through the first cooling coil (19), thereby reducing the disturbance of the media in the water tank (2).

8. The indirect cooling mold temperature control machine according to claim 5, characterized in that: The needle valve (17) is arranged at the outlet position of the exhaust solenoid valve (9), and the amount of drainage delivered by the heating cylinder (12) to the water tank (2) is changed by adjusting the needle valve (17).

9. The indirect cooling mold temperature control machine according to claim 8, characterized in that: A system water one-way valve (34) and a system water safety valve (16) are provided between the booster pump (4) and the heating cylinder (12), wherein the system water one-way valve (34) is used to prevent the high-temperature and high-pressure medium in the heating cylinder (12) from releasing pressure to the water tank (2) through the pipeline when the regulator is in a shutdown state; and the system water safety valve (16) is used to prevent the pressure relief port from opening and slowly releasing pressure through the pipeline connected to the water tank (2) when the regulator is in a shutdown state and the pressure of the high-temperature medium in the heating cylinder (12) is too high and exceeds a set value.

10. The indirect cooling mold temperature control machine according to claim 9, characterized in that: When the mold position is much higher than the water tank (2), the exhaust solenoid valve (9) and the system water one-way valve (34) block the media path flowing back into the water tank (2), thereby preventing the system water in the water tank (2) from overflowing.

Images