Water circulation mold temperature controller

Abstract

A water circulation mold temperature controller relates to the technical field of mold temperature controllers and comprises a mold pipeline, a heat exchanger, a heater, a circulating pump, a pressure pump and a control unit, the mold pipeline, the heat exchanger, the heater and the circulating pump form a water circulation loop, and the heat exchanger, the heater, the circulating pump and the pressure pump are all electrically connected with the control unit; the heat exchanger is provided with a first inlet, a second inlet, a first outlet and a second outlet, the first inlet communicates with a cooling water inlet pipe, the second inlet communicates with a mold water outlet pipe, the first outlet communicates with a cooling water return pipe, and the second outlet communicates with a water inlet of the heater through a pipeline; the water outlet of the heater is communicated with the water inlet end of the circulating pump; the water outlet end of the circulating pump is communicated with the mold water inlet pipe; the water inlet end of the booster pump is communicated with the cooling water inlet pipe, and the water outlet end of the booster pump is communicated with the circulating pump. By the adoption of the technical scheme, the effects of automatic water supplementing, high heat exchange efficiency, energy saving, environment friendliness and the like are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold temperature controllers, in particular to a water circulation mold temperature controller. Background Art

[0002] Mold temperature controller, full name is mold temperature controller, is a device used to control the temperature of molds in industrial production. It is widely used in industrial fields such as plastic processing, rubber processing, chemical reaction, die casting, extrusion, hot pressing, mixing, etc., especially in occasions where the temperature of molds or reactors needs to be precisely controlled.

[0003] In the related art, for example, CN203063085U discloses a water circulation mold temperature controller, which includes a circulation pump, a heater, a temperature controller and a gas collecting tank connected in sequence through a pipeline, and the circulation pump, the heater, the temperature controller and the gas collecting tank form a circulation loop; a pressure switch is provided between the circulation pump and the heater, a temperature sensing rod and a pressure gauge are provided between the heater and the temperature controller, and a temperature sensing rod and a safety valve are provided between the temperature controller and the gas collecting tank. That is, CN203063085U uses water as a heat transfer medium and electric energy as a heating energy source, and drives the water to circulate and heat between the heating system and the heated equipment through a circulation pump to achieve a constant temperature effect.

[0004] However, during the operation of the water circulation mold temperature controller disclosed in CN203063085U, especially when operated at high temperature, water may evaporate, resulting in a gradual decrease in the amount of water in the pipeline. CN203063085U also has the problems of low heat exchange efficiency and high energy consumption. Therefore, it needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide a water circulation mold temperature controller in view of the defects and shortcomings in the prior art.

[0006] The technical solution adopted by the utility model is: a water circulation mold temperature controller, which is used to control the temperature of the mold, comprises a mold pipeline, a heat exchanger, a heater, a circulation pump, a pressure pump and a control unit, wherein the mold pipeline comprises a mold water inlet pipe and a mold water outlet pipe respectively arranged on both sides of the mold, the heat exchanger, the heater, the circulation pump and the pressure pump are all electrically connected to the control unit, and the mold pipeline, the heat exchanger, the heater and the circulation pump form a water circulation loop;

[0007] The heat exchanger has a first inlet, a second inlet, a first outlet and a second outlet, the first inlet is connected to a cooling water inlet pipe, the second inlet is connected to a mold outlet pipe, the first outlet is connected to a cooling water return pipe, and the second outlet is connected to a water inlet of a heater through a pipeline;

[0008] The water outlet of the heater is connected to the water inlet of the circulation pump, and the water outlet of the circulation pump is connected to the water inlet pipe of the mold, so that the hot water heated by the heater enters the water inlet pipe of the mold through the circulation pump and then flows out from the water outlet pipe of the mold to the heat exchanger, and then flows back from the heat exchanger to the heater for heating;

[0009] The water inlet end of the booster pump is connected to the cooling water inlet pipe, and the water outlet end of the booster pump is connected to the circulation pump, so that when water replenishment is needed, the control unit controls the booster pump to pump the water in the cooling water inlet pipe into the water circulation loop formed by the heat exchanger, the heater, the circulation pump and the mold pipeline.

[0010] Optionally, temperature sensors are provided on the mold water inlet pipe and the mold water outlet pipe, and both temperature sensors are electrically connected to the control unit to detect the temperature of the water in the mold water inlet pipe and the mold water outlet pipe in real time through the temperature sensors.

[0011] Optionally, a pressure gauge is provided on the mold water inlet pipe, the pressure gauge is electrically connected to the control unit, and the pressure gauge is used to detect the water pressure in the mold water inlet pipe.

[0012] Optionally, a solenoid valve electrically connected to the control unit is provided on the cooling water inlet pipe.

[0013] Optionally, a low-pressure switch is also provided on the cooling water inlet pipe, the low-pressure switch is electrically connected to the control unit, and the low-pressure switch is used to detect the water pressure in the cooling water inlet pipe.

[0014] Optionally, vertical check valves are provided between the booster pump and the circulation pump and on the cooling water return pipe.

[0015] Optionally, ball valves are provided on the mold water inlet pipe, the mold water outlet pipe and the cooling water inlet pipe. The first ball valve is provided at the end of the mold water inlet pipe close to the mold, the second ball valve is provided at the end of the mold water outlet pipe close to the mold, and the third ball valve is provided at the end of the cooling water inlet pipe away from the heat exchanger.

[0016] Optionally, a Y-type filter is also provided on the cooling water inlet pipe, and the Y-type filter is arranged at one end of the cooling water inlet pipe away from the heat exchanger, and the ball valve on the cooling water inlet pipe is located between the Y-type filter and the heat exchanger.

[0017] After adopting the above technical solution, the beneficial effects of the utility model are:

[0018] The present application uses a pressure gauge to detect the water pressure in the mold water inlet pipe in real time, thereby realizing the detection of the water pressure of the water circulation loop formed by the mold pipeline, heat exchanger, heater, and circulation pump. When the pressure gauge detects that the water pressure is lower than the normal value, that is, the water volume in the circulation loop is reduced, the control unit controls the action of the booster pump to make the booster pump directly input the water in the cooling water inlet pipe into the water circulation loop, thereby realizing automatic water addition and ensuring the temperature control effect of the mold. In the present application, the water in the mold water outlet pipe flows into the heat exchanger and exchanges heat with the cold water flowing in through the first inlet of the heat exchanger, thereby improving the heat exchange efficiency and reducing energy consumption, conforming to the concept of energy saving and environmental protection, and having better market promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0021] Figure 2 It is a display diagram of the heat exchanger in this embodiment.

[0022] Explanation of the accompanying drawings: 10. mold pipeline; 11. mold water inlet pipe; 12. mold water outlet pipe; 13. temperature sensor; 14. pressure gauge; 15. ball valve; 20. heat exchanger; 21. first inlet; 22. second inlet; 23. first outlet; 24. second outlet; 25. cooling water inlet pipe; 251. solenoid valve; 252. low pressure switch; 253. Y-type filter; 26. cooling water return pipe; 261. vertical check valve; 30. heater; 40. circulation pump; 50. pressure pump; 60. mold. DETAILED DESCRIPTION

[0023] The following will be combined with the attached embodiment of the present utility model Figure 1-2 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "back", "side", "circumferential" and the like in the present invention indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In addition, the words "first", "second" and the like are only used to distinguish multiple components or structures with the same or similar structures, and do not represent any special limitation on the setting order or connection relationship.

[0025] This embodiment relates to a water circulation mold temperature controller, referring to Figure 1 and Figure 2 , which is used to control the temperature of the mold 60, includes a mold pipeline 10, a heat exchanger 20, a heater 30, a circulation pump 40, a pressure pump 50 and a control unit, wherein the mold pipeline 10 includes a mold water inlet pipe 11 and a mold water outlet pipe 12 respectively arranged on both sides of the mold 60, the mold pipeline 10, the heat exchanger 20, the heater 30 and the circulation pump 40 form a water circulation loop, and the heat exchanger 20, the heater 30, the circulation pump 40 and the pressure pump 50 are all electrically connected to the control unit, so as to realize the control of the water circulation loop through the control unit, thereby realizing the temperature control of the mold pipeline 10.

[0026] The heat exchanger 20 is used to transfer heat between two or more fluids without mixing these fluids. In this embodiment, the heat exchanger 20 has a first inlet 21, a second inlet 22, a first outlet 23 and a second outlet 24. The first inlet 21 is connected to a cooling water inlet pipe 25, the second inlet 22 is connected to the mold outlet pipe 12, the first outlet 23 is connected to a cooling water return pipe 26, and the second outlet 24 is connected to the water inlet of the heater 30 through a pipeline. Through the arrangement of the heat exchanger 20, the hot water flowing into the heat exchanger 20 from the mold outlet pipe 12 exchanges heat with the cold water flowing into the heat exchanger 20 from the cooling water inlet pipe 25, and then flows into the heater 30 from the second outlet 24 so as to be heated by the heater 30, thereby improving the heat exchange efficiency and avoiding the waste of heat.

[0027] The water outlet of the heater 30 is connected to the water inlet end of the circulation pump 40, and the water outlet end of the circulation pump 40 is connected to the mold water inlet pipe 11, so that the hot water heated by the heater 30 enters the mold water inlet pipe 11 under the action of the circulation pump 40, and the hot water passes through the mold 60 and flows out from the mold water outlet pipe 12 to the heat exchanger 20, and then flows back from the heat exchanger 20 to the heater 30 for heating, thereby forming a complete hot water circulation loop, continuously and stably providing heat to the mold 60, thereby realizing precise control of the temperature of the mold 60.

[0028] The water inlet of the booster pump 50 is connected to the cooling water inlet pipe 25, and the water outlet of the booster pump 50 is connected to the circulation pump 40. In the specific implementation process, since the water outlet of the heater 30 is connected to the water inlet of the circulation pump 40 through a pipeline, a tee can be set to achieve the connection between the booster pump 50 and the circulation pump 40. When water replenishment is required, the control unit controls the booster pump 50 to operate, so that the booster pump 50 pumps the water in the cooling water inlet pipe 25 into the water circulation loop formed by the heat exchanger 20, the heater 30, the circulation pump 40 and the mold pipeline 10, thereby increasing the water volume in the water circulation loop and avoiding the situation where the water volume in the water circulation loop continues to decrease due to continuous operation.

[0029] Furthermore, temperature sensors 13 are provided on the mold water inlet pipe 11 and the mold water outlet pipe 12 , and both temperature sensors 13 are electrically connected to the control unit to detect the temperature of water in the mold water inlet pipe 11 and the mold water outlet pipe 12 in real time through the temperature sensors 13 .

[0030] It can be understood that when the temperature sensor 13 detects that the water temperature in the mold water inlet pipe 11 and the mold water outlet pipe 12 is lower than the set temperature, the control unit controls the heater 30 to operate, and the heater 30 heats the water flowing out of the second outlet 24 of the heat exchanger 20, so that the temperature of the water flowing into the mold water inlet pipe 11 is increased, thereby achieving precise temperature control of the mold 60.

[0031] Furthermore, a pressure gauge 14 is provided on the mold water inlet pipe 11 . The pressure gauge 14 is electrically connected to the control unit, and the pressure gauge 14 is used to detect the water pressure in the mold water inlet pipe 11 .

[0032] It can be understood that when the pressure gauge 14 detects that the water pressure in the mold water inlet pipe 11 is lower than the set pressure, that is, water replenishment is needed at this time, the control unit controls the pressure pump 50 to operate, thereby automatically adding water to the water circulation loop, ensuring the water volume in the water circulation loop.

[0033] Furthermore, the cooling water inlet pipe 25 is provided with a solenoid valve 251 electrically connected to the control unit.

[0034] Furthermore, a low-pressure switch 252 is also provided on the cooling water inlet pipe 25 . The low-pressure switch 252 is electrically connected to the control unit, and the low-pressure switch 252 is used to detect the water pressure in the cooling water inlet pipe 25 .

[0035] The water pressure in the cooling water inlet pipe 25 is detected in real time through the low-pressure switch 252 and the detected data is transmitted to the control unit. When the water pressure in the cooling water inlet pipe 25 is too low, the control unit controls the solenoid valve 251 to close, so that the water with low pressure in the cooling water inlet pipe 25 cannot enter the heat exchanger 20, thereby protecting the heat exchanger 20 and the water circulation loop.

[0036] Furthermore, a vertical check valve 261 is provided between the booster pump 50 and the circulation pump 40 and on the cooling water return pipe 26. The vertical check valve 261 can prevent the water in the cooling water inlet pipe 25 and the cooling water outlet pipe from flowing in reverse, thereby protecting the water circulation loop.

[0037] Furthermore, ball valves 15 are provided on the mold water inlet pipe 11, the mold water outlet pipe 12 and the cooling water inlet pipe 25. The first ball valve 15 is provided at one end of the mold water inlet pipe 11 close to the mold 60, the second ball valve 15 is provided at one end of the mold water outlet pipe 12 close to the mold 60, and the third ball valve 15 is provided at one end of the cooling water inlet pipe 25 away from the heat exchanger 20. By providing the three ball valves 15, the medium flow is cut off in the water circulation loop when the water pressure is too high or other abnormal conditions occur, thereby protecting the water circulation loop from damage.

[0038] In addition, a Y-type filter 253 is also provided on the cooling water inlet pipe 25, and the Y-type filter 253 is provided at one end of the cooling water inlet pipe 25 away from the heat exchanger 20, and the ball valve 15 on the cooling water inlet pipe 25 is located between the Y-type filter 253 and the heat exchanger 20. Through the provision of the Y-type filter 253, solid particles in the cooling water can be effectively removed, thereby avoiding damage to equipment such as the heat exchanger 20, the solenoid valve 251, the ball valve 15, the circulation pump 40 and the pressure pump 50.

[0039] The above is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A water circulation mold temperature controller for controlling the temperature of a mold (60), characterized in that: The invention comprises a mold pipeline (10), a heat exchanger (20), a heater (30), a circulation pump (40), a pressure pump (50) and a control unit, wherein the mold pipeline (10) comprises a mold water inlet pipe (11) and a mold water outlet pipe (12) respectively arranged on both sides of a mold (60); the mold pipeline (10), the heat exchanger (20), the heater (30) and the circulation pump (40) form a water circulation loop, and the heat exchanger (20), the heater (30), the circulation pump (40) and the pressure pump (50) are all electrically connected to the control unit; The heat exchanger (20) has a first inlet (21), a second inlet (22), a first outlet (23) and a second outlet (24); the first inlet (21) is connected to a cooling water inlet pipe (25); the second inlet (22) is connected to a mold outlet pipe (12); the first outlet (23) is connected to a cooling water return pipe (26); and the second outlet (24) is connected to a water inlet of a heater (30) through a pipeline; The water outlet of the heater (30) is connected to the water inlet of the circulation pump (40), and the water outlet of the circulation pump (40) is connected to the mold water inlet pipe (11), so that the hot water heated by the heater (30) enters the mold water inlet pipe (11) through the circulation pump (40) and then flows out from the mold water outlet pipe (12) to the heat exchanger (20), and then flows back from the heat exchanger (20) to the heater (30) for heating; The water inlet end of the booster pump (50) is connected to the cooling water inlet pipe (25), and the water outlet end of the booster pump (50) is connected to the circulation pump (40), so that when water replenishment is required, the control unit controls the booster pump (50) to operate, so that the booster pump (50) pumps the water in the cooling water inlet pipe (25) into the water circulation loop formed by the heat exchanger (20), the heater (30), the circulation pump (40) and the mold pipeline (10).

2. A water circulation mold temperature controller according to claim 1, characterized in that: The mold water inlet pipe (11) and the mold water outlet pipe (12) are both provided with temperature sensors (13), and the two temperature sensors (13) are both electrically connected to a control unit so as to detect the temperature of water in the mold water inlet pipe (11) and the mold water outlet pipe (12) in real time through the temperature sensors (13).

3. A water circulation mold temperature controller according to claim 1, characterized in that: A pressure gauge (14) is provided on the mold water inlet pipe (11), the pressure gauge (14) is electrically connected to the control unit, and the pressure gauge (14) is used to detect the water pressure in the mold water inlet pipe (11).

4. A water circulation mold temperature controller according to claim 1, characterized in that: The cooling water inlet pipe (25) is provided with a solenoid valve (251) electrically connected to the control unit.

5. A water circulation mold temperature controller according to claim 4, characterized in that: The cooling water inlet pipe (25) is also provided with a low-pressure switch (252), the low-pressure switch (252) is electrically connected to the control unit, and the low-pressure switch (252) is used to detect the water pressure in the cooling water inlet pipe (25).

6. A water circulation mold temperature controller according to claim 1, characterized in that: A vertical check valve (261) is provided between the booster pump (50) and the circulation pump (40) and on the cooling water return pipe (26).

7. A water circulation mold temperature controller according to claim 1, characterized in that: Ball valves (15) are provided on the mold water inlet pipe (11), the mold water outlet pipe (12) and the cooling water inlet pipe (25); the first ball valve (15) is provided at an end of the mold water inlet pipe (11) close to the mold (60), the second ball valve (15) is provided at an end of the mold water outlet pipe (12) close to the mold (60), and the third ball valve (15) is provided at an end of the cooling water inlet pipe (25) away from the heat exchanger (20).

8. A water circulation mold temperature controller according to claim 7, characterized in that: The cooling water inlet pipe (25) is also provided with a Y-type filter (253), and the Y-type filter (253) is arranged at one end of the cooling water inlet pipe (25) away from the heat exchanger (20), and the ball valve (15) on the cooling water inlet pipe (25) is located between the Y-type filter (253) and the heat exchanger (20).

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