Integrated multi-temperature-section mold temperature control device and extruder

Abstract

The utility model provides an integrated multi-temperature-section mold temperature control device and an extruder, which are used for respectively controlling the temperatures of a plurality of different functional sections of the extruder through water circulation. The water tank is arranged in the case and used for storing cooling water; the refrigeration equipment is arranged in the case, is connected with the water tank and is used for cooling the cooling water in the water tank; the plurality of temperature control assemblies are in one-to-one correspondence with the plurality of different functional sections, and each temperature control assembly is connected with the corresponding functional section and the water tank through a cooling water pipe and is used for controlling the flow and the flow velocity of cooling water flowing through the cooling water pipe of the corresponding functional section. According to the integrated multi-temperature-section mold temperature control device disclosed by the embodiment of the utility model, the plurality of temperature control assemblies are used for detecting the temperature and controlling the flow and the flow velocity of cooling water conveyed to each functional section of the extruder, so that the temperature of each functional section is accurately controlled, and the plurality of functional sections only need to be provided with one water tank and one refrigeration device; the integration degree is high, and waterway pipeline connection is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to an integrated multi-temperature section mold temperature control device and an extruder. Background Art

[0002] Extruders are widely used in the production of ethylene vinyl acetate copolymer (EVA) films for photovoltaic modules. They rely primarily on the pressure and shear forces generated by the rotating screw to fully plasticize and evenly mix the material. The production of EVA films, a photovoltaic material, requires precise temperature control in each functional section of the extruder's casting process, but the required temperature varies from one section to another.

[0003] The existing extruder is equipped with a water-type mold temperature controller for each functional section. A water tank and a refrigerator are set in the water circuit of each mold temperature controller. The large number of devices results in complex connections of water pipes, difficult temperature control, high energy consumption, and relatively low temperature control accuracy of the mold temperature controller. Utility Model Content

[0004] In view of this, the utility model provides an integrated multi-temperature section mold temperature control device and an extruder, which are used to solve the problem of complex water pipes caused by a large number of equipment, as well as the problems of low temperature control accuracy, high energy consumption and inconvenience.

[0005] In order to solve the above technical problems, the present invention provides an integrated multi-temperature section mold temperature control device, comprising:

[0006] Chassis;

[0007] A water tank is provided inside the chassis and is used to store cooling water;

[0008] Refrigeration equipment, which is arranged in the chassis and connected to the water tank, is used to cool the cooling water in the water tank;

[0009] There are multiple temperature control components corresponding to multiple different functional sections. Each temperature control component is connected to the corresponding functional section and water tank through a cooling water pipe, and is used to control the flow and flow rate of cooling water in the cooling water pipe flowing through the corresponding functional section.

[0010] In one embodiment of the present invention, the integrated multi-temperature section mold temperature control device further includes: a recovery water pipe, and each temperature control component is connected to the corresponding functional section and water tank through the recovery water pipe to form a cooling water circulation.

[0011] In one embodiment of the present invention, the refrigeration device includes at least a compression component, a condensation component, a first energy-saving component and an evaporation component connected in sequence, and the refrigeration device is used to cool the water flow in the water tank through water circulation.

[0012] In one embodiment of the present invention, the refrigeration device further includes a frequency converter, which is connected to the compression assembly and is used to adjust the operating frequency of the compression assembly.

[0013] In one embodiment of the present invention, the integrated multi-temperature section mold temperature control device further includes a second energy-saving component connected to the recovery water pipe for regulating the water flowing back to the recovery water pipe.

[0014] In one embodiment of the present invention, the integrated multi-temperature section mold temperature control device further includes a temperature sensing component, which includes:

[0015] A first temperature sensing component is provided inside the water tank and is used to measure the water temperature in the water tank;

[0016] A plurality of second temperature sensing components are arranged in the functional segments and are respectively used to measure the temperature of each functional segment.

[0017] In one embodiment of the present invention, the temperature control assembly includes:

[0018] Temperature control equipment, which is installed on the cooling water pipe and is used to detect the temperature of water flowing through the cooling water pipe;

[0019] The electromagnetic valve is installed on the cooling water pipe and is electrically connected to the temperature control device. The temperature control device controls the flow rate and flow rate of water flowing through the cooling water pipe;

[0020] The controller is arranged outside the chassis and is electrically connected to the temperature sensing component, the temperature control device and the refrigeration device.

[0021] In one embodiment of the present invention, the water tank includes at least a first water tank and a second water tank, the first water tank is used to store ethylene glycol and is connected to a functional section whose operating temperature range includes zero degrees Celsius;

[0022] The second water tank is used to store cooling water and is connected to the functional section whose lowest working temperature is above zero degrees Celsius.

[0023] In one embodiment of the present invention, the second water tank includes a plurality of sub-water tanks, each sub-water tank corresponding to a functional segment with a different temperature range.

[0024] The utility model also provides an extruder, which includes the integrated multi-temperature section mold temperature control device of the above embodiment.

[0025] The beneficial effects of the above technical solution of the utility model are as follows:

[0026] According to the integrated multi-temperature section mold temperature control device and extruder of the embodiment of the present invention, by setting a chassis, a water tank, a refrigeration device, multiple temperature control components, and the connection relationship between the various components, the refrigeration device cools the cooling water in the water tank, and the multiple temperature control components detect the temperature and control the flow and flow rate of the cooling water delivered to each functional section of the extruder, thereby achieving precise control of the temperature of each functional section. The temperature control operation is convenient and the precision is high. Only one water tank and one refrigeration device are required for multiple functional sections. The integration is high and the water pipeline connection is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an overall structural diagram of an integrated multi-temperature section mold temperature control device according to an embodiment of the present utility model.

[0028] Reference numerals:

[0029] 100, chassis;

[0030] 200, water tank; 210, first water tank; 220, second water tank;

[0031] 300, refrigeration equipment; 310, condensing component; 320, first energy-saving component; 330, evaporating component; 340, second energy-saving component;

[0032] 400, temperature control component; 410, temperature control equipment; 420, solenoid valve

[0033] 510, cooling water pipe; 520, recovery water pipe;

[0034] 600. Functional segment. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0036] The integrated multi-temperature section mold temperature control device of an embodiment of the present utility model will be described in detail below with reference to the accompanying drawings.

[0037] refer to Figure 1 , Figure 1 The overall structure diagram of the integrated multi-temperature section mold temperature control device of an embodiment of the present utility model is shown.

[0038] like Figure 1As shown, in one embodiment of the present invention, an integrated multi-stage mold temperature control device (hereinafter referred to as the mold temperature control device) is used to control the temperature of multiple different functional sections 600 of an extruder through water circulation. The functional sections 600 may include rubber rollers, embossing rollers, cooling rollers, barrels, screen changers, screws, metering pumps, molds, etc. The mold temperature control device includes a chassis 100, a water tank 200, a refrigeration device 300, and multiple temperature control components 400. The water tank 200 is disposed within the chassis 100 and is used to store cooling water. The refrigeration device 300 is disposed within the chassis 100 and connected to the water tank 200 to cool the cooling water in the water tank 200. The multiple temperature control components 400 correspond one-to-one to the multiple different functional sections 600. Each temperature control component 400 is connected to the corresponding functional section 600 and the water tank 200 via a cooling water pipe 510, and is used to control the flow rate and flow rate of the cooling water flowing through the cooling water pipe 510 of the corresponding functional section 600.

[0039] Specifically, when the mold temperature control device is operating, the refrigeration unit 300 continuously cools the cooling water in the water tank 200 to a preset temperature, for example, 20 degrees Celsius. The cooling water is then delivered to the different functional sections 600 through the cooling water pipes 510 to achieve cooling. The multiple temperature control components 400 precisely control the temperature of the different functional sections 600 by controlling the flow rate and flow rate of water in the cooling water pipes 510. For example, when the temperature of one functional section 600 exceeds a threshold, the flow rate and flow rate of the cooling water can be increased to achieve rapid cooling. When the temperature of another functional section 600 is within a safe range, the cooling water can be delivered slowly to ensure that the temperature remains constant. Furthermore, the water tank 200 adopts a one-piece structure with multiple independent compartments corresponding to different functional sections 600. All cooling water pipes 510 are connected to the same water tank 200. Compared to the existing system where each functional section 600 is connected to a separate water tank 200, this achieves integration. Furthermore, the temperature control components 400 can precisely cool the different functional sections 600 through regulation.

[0040] like Figure 1 As shown, in one embodiment of the present invention, the mold temperature control device further includes a water recovery pipe 520, and each temperature control component 400 is connected to the corresponding functional section 600 and the water tank 200 through the water recovery pipe 520 to form a cooling water circulation.

[0041] Among them, compared with the traditional solution, the same functional section 600 in the utility model only needs to be equipped with two water pipes, a cooling water pipe 510 and a recovery water pipe 520, to realize water circulation, which not only avoids the waste of water resources, but also makes the pipe connection simple and convenient, saving space.

[0042] In one embodiment of the present invention, a refrigeration device 300 includes at least a compression assembly (not shown), a condensing assembly 310, a first energy-saving assembly 320, and an evaporation assembly 330, which are connected in sequence. The refrigeration device 300 is used to cool the water in the water tank 200. A refrigerant may be provided in the refrigeration device 300. The compression assembly is used to compress and transport the refrigerant. The condensing assembly 310 is used to output heat and condense the refrigerant. The first energy-saving assembly 320 is used to regulate the pressure and temperature of the refrigerant and may also be referred to as a throttling assembly. The evaporation assembly 330 is used to absorb external heat through evaporation of the refrigerant to achieve a cooling effect. The refrigerant is repeatedly circulated through compression, condensation, throttling, and evaporation, transferring heat to the cooling water in the water tank 200 to achieve a cooling effect.

[0043] In one embodiment of the present invention, the refrigeration device 300 further includes a frequency converter (not shown), which is connected to the compression assembly and is used to adjust the operating frequency of the compression assembly, thereby effectively reducing the energy consumption of the refrigeration device 300.

[0044] like Figure 1 As shown, in one embodiment of the present invention, the mold temperature control device further includes a second energy-saving component 340 connected to the water recovery pipe 520 for regulating the temperature of the water flowing back into the water recovery pipe 520. For example, when the temperature of the water flowing back from the functional section 600 is too high, it can first be cooled by the second energy-saving component 340 to prevent the water temperature from being too high when flowing into the water tank 200, thereby increasing the workload of the refrigeration device 300. The second energy-saving component 340 is a heat exchanger that can exchange heat between a higher-temperature liquid and a lower-temperature liquid, thereby preventing the water temperature from being too high when flowing into the water tank 200, thereby reducing the load on the refrigeration device 300.

[0045] In one embodiment of the present invention, the mold temperature control device further includes a temperature sensing assembly (not shown). The temperature sensing assembly comprises a first temperature sensing assembly and multiple second temperature sensing assemblies. The first temperature sensing assembly is disposed within the water tank 200 and is used to measure the water temperature therein. The multiple second temperature sensing assemblies are disposed within the functional sections 600 and are used to measure the temperature of each functional section 600. The second temperature sensing assemblies may be made of thermocouple material.

[0046] like Figure 1As shown, in one embodiment of the present invention, the temperature control assembly 400 includes a temperature control device 410, a solenoid valve 420, and a controller (not shown). The temperature control device 410 is mounted on the cooling water pipe 510 and is used to detect the temperature of the water flowing through the cooling water pipe 510. The solenoid valve 420 is mounted on the cooling water pipe 510 and is electrically connected to the temperature control device 410. Under the control of the temperature control device 410, the flow rate and flow rate of the water flowing through the cooling water pipe 510 are controlled by the temperature control device 410. The controller may include a touch screen and a programmable logic controller (PLC). The controller is mounted outside the chassis 100 and is electrically connected to the temperature sensor assembly, the temperature control device 410, and the refrigeration unit 300. The user can adjust the desired temperature through the controller. For example, when the second temperature sensor assembly detects that the temperature of the corresponding functional segment 600 is continuously high, the controller receives the information and the user operates the controller to further cool the refrigeration unit 300 to accelerate the cooling rate.

[0047] like Figure 1 As shown, in one embodiment of the present invention, the water tank 200 includes at least a first water tank 210 and a second water tank 220. The first water tank 210 is used to store ethylene glycol and is connected to a functional section 600 whose operating temperature range includes zero degrees Celsius, such as a rubber roller. The second water tank 220 is used to store cooling water and is connected to a functional section 600 whose minimum operating temperature is above zero degrees Celsius, such as an embossing roller.

[0048] Furthermore, the second water tank 220 includes multiple sub-tanks (not shown), each corresponding to a different temperature range of the functional segment 600. By allowing the water tank 200 to store different cooling substances and dividing it into multiple sub-tanks, the adaptability of the water tank 200 to different temperature segments is enhanced.

[0049] In one embodiment of the present invention, the mold temperature control device can use a variable frequency scroll water-cooled chiller for centralized cooling, with a nominal energy efficiency ratio (cooling efficiency) of up to 4.0. Compared with the traditional solution, the nominal energy efficiency ratio is increased by 30%, which can effectively prevent the frequent start-up of the compression component, has higher temperature control accuracy, longer service life, and effectively reduces the volume of the water tank 200.

[0050] In one embodiment of the present invention, the mold temperature control device may further include: a multi-temperature section process cooling system (not shown), which may adopt a full heat recovery design according to user needs, wherein the multi-temperature section process cooling system may recover and store waste heat discharged from the casting line in real time during refrigeration operation, and be used for mixing heating, heating of steel rollers during early startup, and heating and constant temperature of finished product warehouses in winter.

[0051] In summary, according to the embodiment of the utility model, the integrated multi-temperature section mold temperature control device can centrally control the temperature of multiple functional sections of the extruder, has high integration, small footprint, and simple and convenient pipeline connection. The frequency converter, the first energy-saving component, and the second energy-saving component reduce energy consumption, making energy utilization more efficient. The controller and temperature control component make temperature control more precise and more convenient to operate.

[0052] In addition, an embodiment of the present invention further provides an extruder having seven functional sections 600 and an integrated multi-temperature section mold temperature control device (as shown in Table 1) corresponding to the seven functional sections 600. Figure 1 shown),

[0053] Table 1 Functional sections and corresponding temperatures of an extruder

[0054]

[0055]

[0056] Among them, since the temperature of the rubber roller (-15 to 5 degrees Celsius) is relatively low, ethylene glycol can be used for cooling. Figure 1 As shown, the water tank 200 includes a first water tank 210 and a second water tank 220. The first water tank 210 corresponds to the rubber roller and is equipped with ethylene glycol. The second water tank 220 is connected to the embossing roller, cooling roller, barrel, screen changer, screw, metering pump, and mold, and is used to store cooling water. The rubber roller has a low and stable temperature, so the temperature control assembly 400 can be omitted between it and the first water tank 210. Six temperature control assemblies 400 are respectively installed between the remaining six functional sections 600 and the second water tank 220.

[0057] In one embodiment of the present invention, the water tank 200 can be directly integrated from multiple sub-water tanks. For example, in the traditional solution, each functional section 600 corresponds to a sub-water tank. The water tank 200 can be obtained by arranging multiple sub-water tanks side by side. In this case, it is equivalent to arranging multiple partitions inside the water tank 200. Figure 1 In the above embodiment, the interior of the water tank 200 is divided into a first water tank 210 and a second water tank 220 according to the two substances stored therein, ethylene glycol and cooling water. The first water tank 210 can be a sub-water tank of the rubber roller in the traditional solution, and the second water tank 220 can be a sub-water tank integrated with the embossing roller, cooling roller, barrel and screen changer, screw, metering pump, and mold in the traditional solution.

[0058] In one embodiment of the present invention, the mold temperature control device and all internal and external circulation water pumps in the water circuit of the extruder can adopt constant pressure water supply, wherein the water pump can automatically change the frequency to achieve stable pressure water supply to adapt to the user's production line flow, and the heat exchange of each roller at the end of the extruder is real-time and stable.

[0059] The specific structure of the mold temperature control device has been described in detail in the above embodiment. The specific structure and temperature control process can be referred to the above Figure 1 The mold temperature control device explained above will not be described in detail here. In addition, this extruder also has the same effects as the mold temperature control device, namely, high integration, small footprint, simple and convenient pipe connection, the inverter, the first energy-saving component, and the second energy-saving component reduce energy consumption and make energy utilization more efficient, and the controller and temperature control component make temperature control more precise and easier to operate.

[0060] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by persons having ordinary skills in the field to which this utility model belongs. The words "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0061] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An integrated multi-temperature section mold temperature control device, characterized in that: Used to control the temperature of multiple functional sections of the extruder through water circulation, including: Chassis; A water tank, the water tank is arranged in the chassis and is used to store cooling water; A refrigeration device, the refrigeration device is arranged in the chassis and connected to the water tank, and is used to cool the cooling water in the water tank; Multiple temperature control components corresponding to the multiple different functional sections, each of which is connected to the corresponding functional section and the water tank through a cooling water pipe, and is used to control the flow rate and flow velocity of the cooling water flowing through the cooling water pipe corresponding to the functional section.

2. The integrated multi-temperature section mold temperature control device according to claim 1, characterized in that: It also includes a recovery water pipe, and each of the temperature control components is connected to the corresponding functional section and the water tank through the recovery water pipe to form a circulation of the cooling water.

3. The integrated multi-temperature section mold temperature control device according to claim 1, characterized in that: The refrigeration equipment at least comprises a compression component, a condensation component, a first energy-saving component and an evaporation component connected in sequence, and the refrigeration equipment is used to cool the water flow in the water tank through water circulation.

4. The integrated multi-temperature section mold temperature control device according to claim 3 is characterized in that: The refrigeration equipment further comprises a frequency converter, which is connected to the compression assembly and is used to adjust the operating frequency of the compression assembly.

5. The integrated multi-temperature section mold temperature control device according to claim 2, characterized in that: It also includes a second energy-saving component connected to the recycling water pipe and used for regulating the water flowing back to the recycling water pipe.

6. The integrated multi-temperature section mold temperature control device according to claim 1, characterized in that: Also included is a temperature sensing assembly, the temperature sensing assembly comprising: A first temperature sensing component, the first temperature sensing component is arranged inside the water tank and is used to measure the water temperature in the water tank; A plurality of second temperature sensing components are respectively arranged in the plurality of functional segments and are respectively used to measure the temperature of each of the functional segments.

7. The integrated multi-temperature section mold temperature control device according to claim 6, characterized in that: The temperature control component comprises: A temperature control device, which is arranged on the cooling water pipe and is used to detect the temperature of water flowing through the cooling water pipe; An electromagnetic valve, which is arranged on the cooling water pipe and is electrically connected to the temperature control device, and controls the flow rate and flow velocity of water flowing through the cooling water pipe under the action of the temperature control device; A controller is arranged outside the chassis and is electrically connected to the temperature sensing component, the temperature control device and the refrigeration device.

8. The integrated multi-temperature section mold temperature control device according to claim 1, characterized in that: The water tank comprises at least a first water tank and a second water tank, wherein the first water tank is used to store ethylene glycol and is connected to the functional section whose operating temperature range includes zero degrees Celsius; The second water tank is used to store the cooling water and is connected to the functional section whose lowest working temperature is higher than zero degrees Celsius.

9. The integrated multi-temperature section mold temperature control device according to claim 8, characterized in that: The second water tank includes a plurality of sub-water tanks, each of which corresponds to a functional segment with a different temperature range.

10. An extruder, characterized in that: It comprises the integrated multi-temperature section mold temperature control device as described in any one of claims 1 to 9.

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