Energy-saving integrated servo-controlled multi-channel water temperature machine system

Abstract

The utility model discloses a kind of energy-saving integrated formula servo control's multi-flow channel water temperature machine system, including heater and mould, mould water inlet channel and mould water outlet channel are set between heater and mould, heater, mould water inlet channel, mould, mould water outlet channel head-to-tail sequentially connected constitute water circulation pipeline;Mould water inlet channel includes sequentially connected total water outlet channel, a plurality of branch water outlet channel along water flow direction, water outlet temperature sensor is set on total water outlet channel;Mould water outlet channel includes sequentially connected a plurality of branch water return channel, total water return channel along water flow direction, water return pressure sensor, water return temperature sensor, closed water tank, magnetic centrifugal pump are sequentially set on total water return channel;Servo regulating valve and magnetic centrifugal pump are driven by servo motor respectively.The utility model carries out mould temperature control by the way of flow control and temperature control combination, increases the temperature control channel of water temperature machine, improves the control precision of temperature, reduces installed power.

Description

Technical Field

[0001] This utility model belongs to the field of temperature control technology for die casting machine molds, and particularly relates to an energy-saving integrated servo-controlled multi-channel water temperature control system. Background Technology

[0002] The water temperature control system of a die casting machine is a mold temperature control device that uses water as the heat transfer medium. It is mainly used for heating and cooling die casting molds to achieve precise control of mold temperature, thereby improving the quality of die castings, shortening the production cycle, extending mold life, reducing production costs, and saving energy and protecting the environment.

[0003] Existing die-casting machines are equipped with water temperature control systems that use variable frequency motors or conventional motors to drive magnetic centrifugal pumps for water supply. For each flow channel, intermittent water supply combined with heaters is used to heat the water at different temperatures to achieve temperature control. In addition, the water temperature control system has a limited number of outlet flow channels. Furthermore, traditional die-casting machines are equipped with multiple water temperature control systems, resulting in a large total installed power of drive motors and heaters and high energy consumption. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides an energy-saving integrated servo-controlled multi-channel water temperature controller system. This system controls the mold temperature by combining flow control and temperature control, increases the temperature control channels of the water temperature controller, improves the temperature control accuracy, and reduces the installed power.

[0005] This utility model is implemented as follows: an energy-saving integrated servo-controlled multi-channel water temperature control system includes a magnetic centrifugal pump, a heater, a closed water tank and a mold. A mold water inlet channel and a mold water outlet channel are provided between the heater and the mold. The heater, the mold water inlet channel, the mold and the mold water outlet channel are connected end to end to form a water circulation pipeline. The mold water inlet channel includes a main water outlet channel connecting to the heater outlet, and multiple branch water outlet channels connecting the main water outlet channel and the mold. A water temperature sensor is installed on the main water outlet channel, and a servo regulating valve and a water flow meter are installed sequentially on each branch water outlet channel. The mold outlet water channel includes multiple branch return water channels connecting the mold and a main return water channel connecting each branch return water channel and the heater inlet. Return water filters and return water flow meters are installed sequentially on the branch return water channels, and return water pressure sensors, return water temperature sensors, closed water tanks, and magnetic centrifugal pumps are installed sequentially on the main return water channel. The servo regulating valve and the magnetic centrifugal pump are driven by servo motors.

[0006] In the above technical solution, preferably, an air-water separator, an outlet water pressure sensor, a pressure gauge and a safety valve are also sequentially arranged along the flow direction on the main outlet water channel, and the outlet water temperature sensor is located on the main outlet water channel downstream of the safety valve.

[0007] In the above technical solution, preferably, the main return water channel between the closed water tank and the magnetic centrifugal pump is connected to a water supply pipeline for adding water to the closed water tank and the heater.

[0008] In the above technical solution, a further preferred embodiment is that the water supply pipeline is provided with a water supply filter, a water supply pressure sensor, a water supply pump, a first solenoid valve, and a check valve in sequence along the flow direction.

[0009] In the above technical solution, preferably, a second solenoid valve is provided on the main return water flow channel between the return water temperature sensor and the closed water tank, and a straight return water flow channel is connected in parallel between the inlet of the second solenoid valve and the outlet of the closed water tank, and a third solenoid valve is provided on the straight return water flow channel.

[0010] In the above technical solution, preferably, the closed water tank is further provided with a cooling water supply pipeline, which is used to cool the return water flowing through the closed water tank.

[0011] In the above technical solution, a further preferred embodiment is that the cooling water supply pipeline is equipped with a third filter and a fourth solenoid valve near the cooling water inlet.

[0012] In the above technical solution, preferably, a drain outlet is provided on the main return water channel between the closed water tank and the magnetic centrifugal pump, and a manual ball valve is provided at the drain outlet.

[0013] In the above technical solution, preferably, a direct short circuit is provided between the main outlet channel and the main return channel near each branch outlet channel and each branch return channel, and a fifth solenoid valve is provided on the direct short circuit.

[0014] The advantages and positive effects of this utility model are: 1. This utility model uses a servo motor to drive a magnetic centrifugal pump, and adjusts the output flow rate of the magnetic centrifugal pump by controlling the speed of the servo motor; at the same time, each branch outlet channel is equipped with a servo regulating valve, which is driven by a servo motor and can precisely control the opening degree of the servo regulating valve, thereby controlling the precise flow rate of each branch outlet channel; the system is equipped with a centralized heater to ensure that the temperature is within a certain range; the system is equipped with external cooling water to cool the water in the closed water tank at high temperature. 2. This utility model adopts a combination of flow control and temperature control to control the mold temperature, which improves the temperature control accuracy. According to the needs of different mold flow channels, the servo motor speed is adjusted to control the total water supply flow. A servo regulating valve is used to control the precise flow of each branch water outlet channel. Combined with a closed water tank and heater for temperature control, it achieves energy saving and reduces the installed power. Attached Figure Description

[0015] The technical solutions of the embodiments of this application will be further described in detail below with reference to the accompanying drawings. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of this application. In addition, unless otherwise specified, these drawings are only intended to conceptually illustrate the structural construction described herein and are not necessarily drawn to scale.

[0016] Figure 1 This is a schematic diagram of the energy-saving integrated servo-controlled multi-channel water temperature controller system of this utility model.

[0017] In the diagram: 1. Heater; 2. Main outlet water channel; 21. Air-water separator; 22. Outlet water pressure sensor; 23. Pressure gauge; 24. Safety valve; 25. Outlet water temperature sensor; 3. Branch outlet water channel; 31. Servo regulating valve; 32. Outlet water flow meter; 4. Branch return water channel; 41. Return water filter; 42. Return water flow meter; 5. Main return water channel; 51. Return water pressure sensor; 52. Return water temperature sensor; 53. Closed water tank; 54. Magnetic centrifugal pump; 55. Second solenoid valve; 56. Manual ball valve; 6. Water supply pipeline; 61. Water supply filter; 62. Water supply pressure sensor; 63. Water supply pump; 64. First solenoid valve; 65. Check valve; 7. Straight-through return water channel; 71. Third solenoid valve; 8. Cooling water supply pipeline; 81. Cooling water filter; 82. Fourth solenoid valve; 9. Direct short circuit; 91. Fifth solenoid valve. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "joining," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Please see Figure 1 This utility model provides an energy-saving integrated servo-controlled multi-channel water temperature control system, including a magnetic centrifugal pump 54, a heater 1, a closed water tank 53, and a mold. A mold inlet water channel and a mold outlet water channel are provided between the heater 1 and the mold. The heater 1, the mold inlet water channel, the mold, and the mold outlet water channel are connected end-to-end to form a water circulation pipeline. The mold water inlet channel includes a main water outlet channel 2 connecting the outlet of heater 1, and multiple branch water outlet channels 3 connecting the main water outlet channel 2 and the mold. A water outlet temperature sensor 25 is installed on the main water outlet channel 2, and a servo regulating valve 31 and a water outlet flow meter 32 are installed on each branch water outlet channel 3 in sequence. The mold outlet water channel includes multiple branch return water channels 4 connecting the mold and a main return water channel 5 connecting each branch return water channel 4 and the water inlet of the heater 1. A return water filter 41 and a return water flow meter 42 are installed sequentially on the branch return water channels 4. A return water pressure sensor 51, a return water temperature sensor 52, a closed water tank 53, and a magnetic centrifugal pump 54 are installed sequentially on the main return water channel 5. The servo regulating valve 31 and the magnetic centrifugal pump 54 are driven by servo motors.

[0022] In a preferred embodiment, an air-water separator 21, an outlet water pressure sensor 22, a pressure gauge 23, and a safety valve 24 are sequentially arranged along the flow direction on the main outlet water channel 2, and the outlet water temperature sensor 25 is located on the main outlet water channel 2 downstream of the safety valve 24.

[0023] In a preferred embodiment, the main return water channel 5 between the closed water tank 53 and the magnetic centrifugal pump 54 is connected to a water supply pipeline 6 for adding water to the closed water tank 53 and the heater 1.

[0024] The water supply pipeline 6 is provided with a water supply filter 61, a water supply pressure sensor 62, a water supply pump 63, a first solenoid valve 64, and a check valve 65 in sequence along the flow direction.

[0025] In a preferred embodiment, a second solenoid valve 55 is provided on the main return water channel 5 between the return water temperature sensor 52 and the closed water tank 53. A straight return water channel 7 is connected in parallel between the inlet of the second solenoid valve 55 and the outlet of the closed water tank 53 on the main return water channel 5. A third solenoid valve 71 is provided on the straight return water channel 7.

[0026] In a preferred embodiment, the closed water tank 53 is further provided with a cooling water supply pipeline 8, which is used to cool the return water flowing through the closed water tank 53.

[0027] The cooling water supply pipeline 8 is equipped with a cooling water filter 81 and a fourth solenoid valve 82 near the cooling water inlet.

[0028] In a preferred embodiment, a drain outlet is provided on the main return water channel 5 between the closed water tank 53 and the magnetic centrifugal pump 54, and a manual ball valve 56 is provided at the drain outlet.

[0029] In a preferred embodiment, a straight short circuit 9 is provided between the main outlet channel 2 and the main return channel 5 near each branch outlet channel 3 and each branch return channel 4, and a fifth solenoid valve 91 is provided on the straight short circuit 9.

[0030] To make the solution of this utility model clearer and more understandable, the specific working process of this utility model will be described in detail below: The return water filter 41, the water supply filter 61, and the cooling water filter 81 are all used to filter impurities in the water; The outlet water pressure sensor 22, the return water pressure sensor 51, and the filling water pressure sensor 62 are all used to detect the water pressure. The first solenoid valve 64, the second solenoid valve 55, the third solenoid valve 71, and the fourth solenoid valve 82 are all used to control the flow of water. Check valve 65 is used to prevent water backflow; Manual ball valve 56 is used for system maintenance and drainage. Air-water separator 21 is used to remove air from the circulating water; Pressure gauge 23 is used to observe the water pressure value; Safety valve 24 is used to drain excess system pressure. The outlet water temperature sensor 25 and the return water temperature sensor 52 are used to detect the water temperature. The specific operations of the water temperature control system are as follows: adding water to the closed water tank 53, circulating and cooling the closed water tank 53, controlling the total water supply flow, precisely controlling the flow channel flow, and heating and controlling the flow channel water temperature. 1. Add water to the closed water tank (53). The difference between the sum of the flow rates of the outlet flow meters 32 of each branch outlet flow channel 3 and the sum of the flow rates of the return flow meters 42 of each branch return flow channel 4 is calculated. When the difference exceeds the set range, the water pump 63 is started to add water to the closed water tank 53. When the closed water tank 53 reaches the set water level, the water pump 63 is stopped.

[0031] II. Closed-loop water tank 53 circulating cooling When the return water temperature sensor 52 of the closed water tank 53 detects that the water temperature exceeds the set value, the third solenoid valve 71 is closed, and the second solenoid valve 55 and the fourth solenoid valve 82 are opened at the same time. The external circulating cooling water supply is connected to circulate and cool the closed water tank 53 until the outlet water temperature sensor 25 detects that the water temperature meets the requirements.

[0032] III. Total Water Supply Flow Control According to the process requirements of the total cooling water flow of the mold, the speed of the magnetic centrifugal pump 54 driven by the servo motor is adjusted. The output flow of the magnetic centrifugal pump 54 will change with the speed, thereby meeting the total flow requirements of all branch water outlet channels 3 of the system.

[0033] IV. Precise Flow Control By controlling the servo motor of the servo regulating valve 31, the opening degree of the servo regulating valve 31 of each branch water outlet channel 3 is controlled, thereby accurately controlling the precise flow rate of each branch water outlet channel 3, so that the flow rate of each branch water outlet channel 3 meets the process requirements, and the flow rate of the branch water outlet channel 3 is detected by the water outlet flow meter 32.

[0034] V. Water heating and temperature control in the flow channel When the temperature of the water output from the entire system does not meet the requirements, heater 1 will heat the water to achieve the required system temperature. Once the system set temperature is reached, heating will stop.

[0035] This invention uses a combination of flow control and temperature control to control mold temperature, which improves the accuracy of temperature control. In response to the needs of different mold flow channels, the servo motor speed is adjusted to control the total water supply flow. A servo regulating valve 31 is used to control the precise flow of each branch water outlet 3. The temperature is controlled by combining a closed water tank 53 and a heater 1, which achieves energy saving and reduces the installed power.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. An energy-saving integrated servo-controlled multi-channel water temperature controller system, characterized in that: It includes a magnetic centrifugal pump, a heater, a closed water tank and a mold. A mold water inlet channel and a mold water outlet channel are provided between the heater and the mold. The heater, the mold water inlet channel, the mold and the mold water outlet channel are connected end to end to form a water circulation pipeline. The mold water inlet channel includes a main water outlet channel connecting to the heater outlet, and multiple branch water outlet channels connecting the main water outlet channel and the mold. A water temperature sensor is installed on the main water outlet channel, and a servo regulating valve and a water flow meter are installed sequentially on each branch water outlet channel. The mold outlet water channel includes multiple branch return water channels connecting the mold and a main return water channel connecting each branch return water channel and the heater inlet. Return water filters and return water flow meters are installed sequentially on the branch return water channels, and return water pressure sensors, return water temperature sensors, closed water tanks, and magnetic centrifugal pumps are installed sequentially on the main return water channel. The servo regulating valve and the magnetic centrifugal pump are driven by servo motors.

2. The energy-saving integrated servo-controlled multi-channel water temperature controller system according to claim 1, characterized in that: An air-water separator, an outlet water pressure sensor, a pressure gauge, and a safety valve are sequentially installed along the flow direction of the main outlet water channel. The outlet water temperature sensor is located on the main outlet water channel downstream of the safety valve.

3. The energy-saving integrated servo-controlled multi-channel water temperature controller system according to claim 1, characterized in that: The main return water channel between the closed water tank and the magnetic centrifugal pump is connected to a water supply pipeline for adding water to the closed water tank and the heater.

4. The energy-saving integrated servo-controlled multi-channel water temperature controller system according to claim 3, characterized in that: The water supply pipeline is sequentially equipped with a water supply filter, a water supply pressure sensor, a water supply pump, a first solenoid valve, and a check valve along the flow direction.

5. The energy-saving integrated servo-controlled multi-channel water temperature controller system according to claim 1, characterized in that: A second solenoid valve is installed on the main return water channel between the return water temperature sensor and the closed water tank. A straight return water channel is connected in parallel between the inlet of the second solenoid valve and the outlet of the closed water tank. A third solenoid valve is installed on the straight return water channel.

6. The energy-saving integrated servo-controlled multi-channel water temperature controller system according to claim 1, characterized in that: The closed water tank is also equipped with a cooling water supply pipeline, which is used to cool the return water flowing through the closed water tank.

7. The energy-saving integrated servo-controlled multi-channel water temperature controller system according to claim 6, characterized in that: The cooling water supply pipeline is equipped with a third filter and a fourth solenoid valve near the cooling water inlet.

8. The energy-saving integrated servo-controlled multi-channel water temperature controller system according to claim 1, characterized in that: A drain outlet is provided on the main return water channel between the closed water tank and the magnetic centrifugal pump, and a manual ball valve is installed at the drain outlet.

9. The energy-saving integrated servo-controlled multi-channel water temperature controller system according to claim 1, characterized in that: A direct short circuit is provided between the main outlet channel and the main return channel near each branch outlet channel and each branch return channel, and a fifth solenoid valve is installed on the direct short circuit.

Images