A paint temperature control system

Abstract

The utility model discloses a kind of lacquer liquid constant temperature control systems, belong to lacquer liquid temperature control technical field, including main pipeline and being sequentially connected through main pipeline constant temperature medium tank, main pump group and lacquer liquid constant temperature device, still include flue plate heat exchanger and refrigerating unit, constant temperature medium tank inlet is connected with first pipeline, first pipeline end is shunted into first output pipe and second output pipe, first output pipe end connects flue plate heat exchanger medium passage outlet, second output pipe end connects refrigerating unit outlet, lacquer liquid constant temperature device outlet is connected with second pipeline, second pipeline end is shunted into first input pipe and second input pipe, first input pipe end connects flue plate heat exchanger medium passage inlet, second input pipe end connects refrigerating unit inlet, flue plate heat exchanger flue passage connects high-temperature equipment exhaust port and air extraction purification device, and the scheme is unified by control device Regulate the temperature and pressure of each pipeline, so that lacquer liquid can better utilize high-temperature exhaust gas.

Description

Technical Field

[0001] This utility model belongs to the field of paint liquid temperature control technology, specifically a paint liquid constant temperature control system. Background Technology

[0002] Currently, the baking and heating costs in the enameled wire production process are relatively high. With energy shortages and fierce market competition, energy conservation has become a key focus for enterprises. In the enameled wire production process, the baking process in the enameled furnace generates a large amount of high-temperature waste gas. Directly releasing this energy is a significant waste. In actual production, how to utilize this energy efficiently and precisely is crucial to reducing production costs.

[0003] In modern coating processes for enameled flat electromagnetic wires, the viscosity of the paint is a key parameter affecting coating effect, film thickness uniformity, and coating appearance. Paint viscosity is extremely sensitive to temperature changes. Fluctuations in ambient temperature or temperature generated during equipment operation directly cause changes in paint viscosity, thus affecting the stability of the wire coating quality. Therefore, temperature-controlled treatment of the paint is an indispensable step in high-end coating processes.

[0004] However, existing waste heat recovery devices are not precise enough in utilizing high-temperature waste gas, making it difficult to use high-temperature waste gas to precisely control the temperature of paint liquid. Utility Model Content

[0005] The purpose of this invention is to provide a constant temperature control system for paint liquid, so as to solve at least one aspect of the problems and defects mentioned in the background art.

[0006] A constant temperature control system for paint liquid includes a main pipeline and a constant temperature medium tank, a main pump group, and a paint liquid constant temperature device connected sequentially through the main pipeline. It also includes a flue gas plate heat exchanger and a refrigeration unit. The inlet of the constant temperature medium tank is connected to a first pipeline, and the end of the first pipeline is split into a first output pipe and a second output pipe. The end of the first output pipe is connected to the medium channel outlet of the flue gas plate heat exchanger, and the end of the second output pipe is connected to the outlet of the refrigeration unit. The outlet of the paint liquid constant temperature device is connected to a second pipeline, and the end of the second pipeline is split into a first input pipe and a second input pipe. The end of the first input pipe is connected to the medium channel inlet of the flue gas plate heat exchanger, and the end of the second input pipe is connected to the inlet of the refrigeration unit. The flue gas channel of the flue gas plate heat exchanger is connected to the exhaust port of high-temperature equipment and an exhaust purification device. Electric valves are installed at the inlet of the paint liquid constant temperature device, the inlet of the refrigeration unit, and the inlet of the flue gas plate heat exchanger. Temperature monitors are installed on the first pipe, the second pipe, the first output pipe, the second output pipe, the constant temperature medium box, and the paint liquid constant temperature device. Pressure monitors are installed before the main pump group inlet and on the second pipe. All electric valves, temperature monitors, and pressure monitors are connected to the control device.

[0007] Furthermore, it also includes a replenishment tank, which is connected to a constant temperature medium tank via pipes.

[0008] Furthermore, it also includes a standby pump set, which is connected in parallel with the main pump set on the main pipeline.

[0009] Furthermore, pressure gauges are installed at both the inlet and outlet ends of the main pump set and the standby pump set.

[0010] Furthermore, there are no fewer than two paint temperature control devices, each connected in parallel to the main pipeline and the second pipeline, and each paint temperature control device is equipped with an electric valve at the outlet or inlet of the medium channel.

[0011] Furthermore, the paint liquid temperature control device is a constant temperature heat exchanger. The inlet of the medium channel of the constant temperature heat exchanger is connected to the main pipeline, and the outlet is connected to the second pipeline. The inlet and outlet of the paint liquid channel of the constant temperature heat exchanger are respectively connected to the coating tooling and the paint liquid tank.

[0012] Furthermore, it also includes a manual valve, which is installed on the first output pipe, the second output pipe, the inlet and outlet pipes of the constant temperature medium box, and the second pipe.

[0013] Furthermore, the flue gas inlet end of the flue gas plate heat exchanger is connected to the exhaust port of the high-temperature equipment through a flue gas inlet pipe, and the flue gas outlet end of the flue gas plate heat exchanger is connected to the purification and smoke extraction device through a flue gas exhaust pipe. A flue gas bypass pipe is connected between the flue gas inlet pipe and the flue gas exhaust pipe, and a valve is installed on the flue gas bypass pipe.

[0014] Furthermore, an auxiliary exhaust pipe is connected to the flue gas exhaust pipe, and an auxiliary exhaust purification device is connected through the auxiliary exhaust pipe. A valve is installed on the auxiliary exhaust pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This solution utilizes high-temperature equipment exhaust gas as a constant-temperature medium to heat the medium through a flue gas plate heat exchanger, and converts the constant-temperature medium temperature into the paint liquid temperature through the constant-temperature heat exchanger, thereby heating the paint liquid and utilizing the high-temperature exhaust gas to save energy.

[0016] 2. This solution uses a flue gas plate heat exchanger and a refrigeration unit to heat or cool the constant-temperature medium. The control device receives information from the temperature and pressure monitors and uniformly regulates each electric valve based on the received information. The control device compares the preset temperature with the detected real-time temperature and outputs a signal based on the comparison value to adjust the opening of each electric valve, thereby finely regulating the flow and temperature of the constant-temperature medium to ensure that the temperature of the constant-temperature medium entering the constant-temperature heat exchanger is maintained within the preset value range, thus ensuring that the temperature of the paint liquid regulated by the constant-temperature medium can be maintained within the preset value range. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] In the diagram: 1. Constant temperature medium tank; 101. Liquid replenishment tank; 2. Flue gas plate heat exchanger; 3. Main pipeline; 301. Flue gas inlet pipe; 3011. Flue gas outlet pipe; 3012. Flue gas bypass pipe; 3013. Auxiliary exhaust pipe; 302. First pipeline; 303. Second pipeline; 304. First output pipe; 305. Second output pipe; 306. First input pipe; 307. Second input pipe; 401. Main pump set; 402. Standby pump set; 5. Constant temperature heat exchanger; 6. Refrigeration unit; 7. Electric valve; 8. Temperature monitor; 9. Pressure monitor; 10. Pressure gauge; 11. Manual valve. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] Please see Figure 1As shown in the embodiment of this utility model, a constant temperature control system for paint liquid includes a main pipe 3 and a constant temperature medium tank 1, a main pump group 401, and a paint liquid constant temperature device connected sequentially through the main pipe 3. It also includes a flue gas plate heat exchanger 2 and a refrigeration unit 6. The inlet of the constant temperature medium tank 1 is connected to a first pipe 302, and the end of the first pipe 302 is split into a first output pipe 304 and a second output pipe 305. The end of the first output pipe 304 is connected to the outlet of the medium channel of the flue gas plate heat exchanger 2, and the end of the second output pipe 305 is connected to the outlet of the refrigeration unit 6. The outlet of the paint liquid constant temperature device is connected to a second pipe 303, and the end of the second pipe 303 is split into a first input pipe 306 and a second input pipe 307. The first input pipe 306 is connected to the medium channel inlet of the flue gas plate heat exchanger 2, and the second input pipe 307 is connected to the inlet of the refrigeration unit 6. The flue gas channel of the flue gas plate heat exchanger 2 is connected to the exhaust port of the high-temperature equipment and the exhaust purification device (not shown in the prior art). Electric valves 7 are provided at the inlet of the paint liquid constant temperature device, the inlet of the refrigeration unit 6, and the inlet of the flue gas plate heat exchanger 2. Temperature monitors 8 are provided on the constant temperature medium box 1 and the paint liquid constant temperature device. Temperature monitors 8 and pressure monitors 9 are provided at multiple locations in this scheme. All electric valves 7, temperature monitors 8 and pressure monitors 9 are connected to a control device (the control device is prior art and is not shown, but may be a PLC controller).

[0023] The constant temperature medium tank 1 contains a constant temperature medium (a liquid used to transfer heat). When the system is in operation, the constant temperature medium in the constant temperature medium tank 1 is drawn into the main pipeline 3 by the main pump unit 401 and then transported into the paint liquid constant temperature device. In the paint liquid constant temperature device, the heat of the constant temperature medium heats the paint liquid. The constant temperature medium enters the second pipeline 303 from the outlet of the paint liquid constant temperature device. According to the detected temperature, the system will open the valve on the first input pipe 306 or the second input pipe 307, so that the constant temperature medium enters the flue gas plate heat exchanger 2 to be heated by the high temperature exhaust gas, or enters the refrigeration unit 6 to be cooled. The constant temperature medium after temperature adjustment will enter the constant temperature medium tank 1 through the first pipeline 302, thus completing the circulation.

[0024] The constant temperature device for the paint liquid is a constant temperature heat exchanger 5. The inlet of the medium channel of the constant temperature heat exchanger 5 is connected to the main pipe 3, and the outlet is connected to the second pipe 303. The inlet and outlet of the paint liquid channel of the constant temperature heat exchanger 5 are connected to the coating fixture and the paint liquid pool (not shown) respectively. The paint liquid can be drawn from the paint liquid pool into the constant temperature heat exchanger 5 through the extraction device (not shown). After heat exchange, the paint liquid that reaches the preset temperature enters the coating fixture from the outlet. The temperature monitoring instrument 8 on the constant temperature device is installed at the outlet of the constant temperature heat exchanger 5 and can monitor in real time whether the paint liquid after heat exchange has reached the preset value.

[0025] The temperature monitoring instrument 8 is installed on the first pipe 302, the second pipe 303, the first output pipe 304, and the second output pipe 305. It can monitor the temperature of the constant temperature medium before it enters the constant temperature medium box 1, the temperature before it enters the flue gas plate heat exchanger 2 or the refrigeration unit 6, and the temperature when it leaves the flue gas plate heat exchanger 2 and the refrigeration unit 6. It can also collect the temperatures of each area and control the device for unified regulation to achieve precise temperature control and ensure that the paint liquid can reach the preset temperature.

[0026] The pressure monitoring instrument 9 is installed at the inlet of the main pump group 401 and on the second pipeline 303. It collects information data and sends it to the control device for unified regulation to achieve fine control of the flow rate.

[0027] In one embodiment, a replenishment tank 101 is also included, which is connected to the constant temperature medium tank 1 via a pipeline. The replenishment tank 101 contains the constant temperature medium and has a built-in valve, through which the replenishment tank 101 can replenish the constant temperature medium lost in the constant temperature medium tank 1.

[0028] In one embodiment, a standby pump set 402 is also included. The standby pump set 402 and the main pump set 401 are connected in parallel on the main pipeline 3. When the main pump set 401 fails, the valve of the main pump set 401 can be closed and the valve of the standby pump set 402 can be opened.

[0029] In one embodiment, pressure gauges 10 are provided at the inlet and outlet ends of both the main pump group 401 and the standby pump group 402, and the pressure of the constant temperature medium entering and exiting the pump group can be directly viewed through the pressure gauges 10.

[0030] In one embodiment, there are at least two paint liquid temperature control devices, each connected in parallel to the main pipe 3 and the second pipe 303. Each paint liquid temperature control device is equipped with an electric valve 7 at the outlet or inlet of its medium channel. This allows for simultaneous heat exchange of multiple sets of paint liquid, improving work efficiency.

[0031] In one embodiment, a manual valve 11 is also included, which is installed on the first output pipe 304, the second output pipe 305, the inlet and outlet pipes of the constant temperature medium tank 1, and the second pipe 303. When a system malfunction occurs, the operation of the constant temperature medium at the corresponding position can be stopped at any time by using the manual valve.

[0032] In one embodiment, the flue gas inlet of the flue gas plate heat exchanger 2 is connected to the exhaust port of a high-temperature equipment via a flue gas inlet pipe 301, and the flue gas outlet of the flue gas plate heat exchanger 2 is connected to an extraction and purification device via a flue gas outlet pipe 3011. A flue gas bypass pipe 3012 is connected between the flue gas inlet pipe 301 and the flue gas outlet pipe 3011. A valve is provided on the flue gas bypass pipe 3012. This valve is normally closed. When the flue gas plate heat exchanger 2 malfunctions and cannot allow flue gas to pass through, this valve can be opened to allow the flue gas to be discharged along the flue gas bypass pipe 3012.

[0033] In one embodiment, an auxiliary exhaust pipe 3013 is connected to the flue gas exhaust pipe 3011, and an auxiliary exhaust purification device (prior art, not shown) is connected through the auxiliary exhaust pipe 3013. A valve is provided on the auxiliary exhaust pipe 3013. When the high-temperature equipment generates a large amount of waste gas, or when the exhaust purification device malfunctions, the auxiliary exhaust pipe 3013 can be activated.

[0034] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A constant temperature control system for paint liquid, characterized in that, The system includes a main pipeline and a constant temperature medium tank, a main pump group, and a paint liquid constant temperature device connected sequentially through the main pipeline. It also includes a flue gas plate heat exchanger and a refrigeration unit. The inlet of the constant temperature medium tank is connected to a first pipeline. The end of the first pipeline is split into a first output pipe and a second output pipe. The end of the first output pipe is connected to the medium channel outlet of the flue gas plate heat exchanger. The end of the second output pipe is connected to the outlet of the refrigeration unit. The outlet of the paint liquid constant temperature device is connected to a second pipeline. The end of the second pipeline is split into a first input pipe and a second input pipe. The end of the first input pipe is connected to the medium channel inlet of the flue gas plate heat exchanger. The end of the second input pipe is connected to the inlet of the refrigeration unit. The flue gas channel of the flue gas plate heat exchanger is connected to the exhaust port of the high-temperature equipment and the exhaust purification device. Electric valves are installed at the inlet of the paint liquid constant temperature device, the inlet of the refrigeration unit, and the inlet of the flue gas plate heat exchanger. Temperature monitors are installed on the first pipe, the second pipe, the first output pipe, the second output pipe, the constant temperature medium box, and the paint liquid constant temperature device. Pressure monitors are installed before the main pump group inlet and on the second pipe. All electric valves, temperature monitors, and pressure monitors are connected to the control device.

2. The paint liquid constant temperature control system according to claim 1, characterized in that, It also includes a replenishment tank, which is connected to a constant temperature medium tank via pipes.

3. The paint liquid constant temperature control system according to claim 1, characterized in that, It also includes a standby pump set, which is connected in parallel with the main pump set on the main pipeline.

4. The paint liquid constant temperature control system according to claim 3, characterized in that, Pressure gauges are installed at both the inlet and outlet ends of the main pump set and the standby pump set.

5. A constant temperature control system for paint liquid according to claim 1, characterized in that, There are no fewer than two paint temperature control devices, each connected in parallel to the main pipeline and the second pipeline. Each paint temperature control device is equipped with an electric valve at the outlet or inlet of the medium channel.

6. The paint liquid constant temperature control system according to claim 5, characterized in that, The paint liquid temperature control device is a constant temperature heat exchanger. The inlet of the medium channel of the constant temperature heat exchanger is connected to the main pipeline, and the outlet is connected to the second pipeline. The inlet and outlet of the paint liquid channel of the constant temperature heat exchanger are respectively connected to the coating tooling and the paint liquid tank.

7. The paint liquid constant temperature control system according to claim 1, characterized in that, It also includes manual valves, which are installed on the first output pipe, the second output pipe, the inlet and outlet pipes of the constant temperature medium box, and the second pipe.

8. A constant temperature control system for paint liquid according to claim 1, characterized in that, The flue gas inlet of the flue gas plate heat exchanger is connected to the exhaust port of the high-temperature equipment through a flue gas inlet pipe, and the flue gas outlet of the flue gas plate heat exchanger is connected to the purification and smoke extraction device through a flue gas exhaust pipe. A flue gas bypass pipe is connected between the flue gas inlet pipe and the flue gas exhaust pipe, and a valve is installed on the flue gas bypass pipe.

9. A constant temperature control system for paint liquid according to claim 8, characterized in that, An auxiliary exhaust pipe is connected to the flue gas exhaust pipe, which is connected to an auxiliary exhaust purification device. A valve is installed on the auxiliary exhaust pipe.

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