Paint supply circulating system

Abstract

The utility model discloses a paint feeding circulation system which comprises a paint liquid supply barrel, a roller painting paint disc and a paint liquid supply pipeline, and further comprises a paint circulation barrel, a paint backflow pipeline, a temperature control system used for adjusting the paint temperature and a viscosity detector used for detecting the paint viscosity, and the paint liquid supply barrel is connected with the paint circulation barrel; the paint circulating barrel, the temperature control system, the viscosity detector and the roller painting paint disc are sequentially connected through a paint liquid supply pipeline, and the bottom of the roller painting paint disc is connected with the paint circulating barrel through a paint backflow pipeline. A constant-temperature subsystem and an online viscosity detector are additionally arranged in the process of a liquid supply and circulation system of paint, the temperature of the paint is controlled by accurately controlling mixing of cold water and hot water and heat exchange of the paint entering a paint tray, online viscosity monitoring, accurate control of the viscosity of the paint and real-time online monitoring of the temperature and the viscosity of the paint are achieved, and the quality stability of products is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of paint color coating, in particular to a paint feeding circulation system. Background Art

[0002] At present, the color coating roller coating industry generally adopts the method of adding diluent to adjust the viscosity of the paint. After reaching the preset requirements, it is put into the paint tray of the roller coating machine for roller coating. Due to the friction between the paint and the rubber roller, the temperature of the paint will change all the time, and the viscosity will change accordingly, which will have a great impact on the coating and film-forming properties of the product; in addition, there is a temperature difference when the paint is transported from the external warehouse to the roller coating machine; the viscosity needs to be adjusted by solvent, which increases the use of solvent.

[0003] There are two main ways to adjust the viscosity of paint: changing the paint temperature and adding solvents. However, adding solvents during the paint supply process will affect the uniformity of the paint. Currently, most methods adjust the viscosity of the paint by heating the liquid supply pipeline, but the temperature control is inaccurate and cannot be controlled online. For example, Chinese patent CN202752172U discloses a constant temperature control system for roller coating machine paint, which includes a paint circulation pump, a water / paint heat exchanger for heating (or cooling) the paint to a set temperature with water, and a detector that can accurately measure the paint temperature at the outlet of the paint circulation pump after passing through the water / paint heat exchanger. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a paint feeding circulation system, which can accurately control the viscosity of the paint online.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] The paint supply circulation system comprises a paint liquid supply barrel, a roller paint tray and a paint liquid supply pipeline, and also comprises a paint circulation barrel, a paint return pipeline, a temperature control system for adjusting the paint temperature and a viscosity detector for detecting the viscosity of the paint. The paint liquid supply barrel is connected to the paint circulation barrel, and the paint circulation barrel, the temperature control system, the viscosity detector and the roller paint tray are connected in sequence through the paint liquid supply pipeline, and the bottom of the roller paint tray is connected to the paint circulation barrel through the paint return pipeline.

[0007] Further:

[0008] The paint liquid supply barrel and the paint circulation barrel are arranged side by side, and pneumatic diaphragm pumps are respectively arranged on the paint liquid supply barrel and the paint circulation barrel.

[0009] The temperature control system and the viscosity detector are both arranged on the side of the roller coating paint tray.

[0010] A filter is provided corresponding to the paint return pipeline.

[0011] The viscosity detector is an online viscometer.

[0012] The paint liquid supply barrel is provided with a solvent adding port and a stirrer.

[0013] The device also comprises a controller, and the temperature control system, the viscosity detector and the pneumatic diaphragm pump are all connected to the controller.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The paint feeding circulation system is reasonably designed. A constant temperature subsystem and an online viscosity detector are added during the paint supply and circulation system. The paint temperature is controlled by accurately controlling the mixing of cold and hot water and the heat exchange of the paint entering the paint tray, as well as online viscosity monitoring. The paint viscosity is accurately controlled, and the temperature and viscosity of the paint are monitored online in real time to ensure the stability of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following is a brief description of the contents and symbols in the drawings of this specification:

[0017] Figure 1 It is a schematic diagram of the utility model system.

[0018] In the figure:

[0019] 1. Paint supply barrel, 2. Paint circulation barrel, 3. Paint supply pipeline, 4. Temperature control system, 5. Viscosity tester, 6. Roller paint tray, 7. Paint return pipeline. DETAILED DESCRIPTION

[0020] The specific implementation of the utility model will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0021] like Figure 1 As shown, the paint supply circulation system includes a paint supply barrel 1, a roller paint tray 6, a paint supply pipeline 3, a paint circulation barrel 2, a paint return pipeline 7, a temperature control system 4 for adjusting the temperature of the paint, and a viscosity detector 5 for detecting the viscosity of the paint.

[0022] The paint supply tank 1 is connected to the paint circulation tank 2, and the paint circulation tank, the temperature control system, the viscosity tester and the roller paint tray are connected in sequence through the paint supply pipe. The bottom of the roller paint tray is connected to the paint circulation tank through the paint return pipe to form an overall circulation system.

[0023] The paint supply tank 1 and the paint circulation tank 2 are arranged side by side, and pneumatic diaphragm pumps are respectively provided on the paint supply tank and the paint circulation tank; the temperature control system and the viscosity detector are both arranged close to the roller coating paint tray, and a temperature sensor is provided in the temperature control system, so that the temperature control is more accurate.

[0024] The temperature control system 4 is a heat exchanger, preferably a plate heat exchanger; the viscosity detector is an online viscometer. The utility model also includes a controller, and the temperature control system, the viscosity detector and the pneumatic diaphragm pump are all connected to the controller to achieve real-time online monitoring of the temperature and viscosity of the paint to ensure product quality stability.

[0025] A filter is provided corresponding to the paint return pipeline, a solvent adding port and a stirrer are provided on the paint liquid supply barrel, and a flow meter is provided corresponding to the solvent adding port to realize online control.

[0026] After the original paint is mixed with solvent, it is pumped into the paint circulation barrel through a pneumatic diaphragm pump; then it is pumped from the circulation barrel into the constant temperature system to make the paint reach the preset temperature; then the temperature and viscosity are tested by an online viscometer and then pumped into the paint tray; the paint then flows back into the circulation barrel from the reflux port of the paint tray; this can effectively avoid the temperature difference caused by the friction between the paint and the rubber roller and the viscosity instability caused by the temperature difference in winter; at the same time, the paint can maintain a constant temperature, which can reduce the use of solvents and reduce costs.

[0027] The utility model adds a temperature control system to the paint supply system, which can quickly heat or cool the paint temperature, so that the paint in the paint tray can reach the set temperature and viscosity more accurately, reduce the amount of thinner used, reduce the color difference and degradation caused by uneven distribution of paint on the steel plate surface, reduce the quality problems of bubbling and bursting during drying caused by excessive addition of thinner in winter, and also reduce the emission of pollutants;

[0028] The above is only an explanation of the preferred embodiments of the present invention. The above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0029] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A paint supply circulation system, comprising a paint supply bucket, a roller paint tray and a paint supply pipeline, characterized in that: It also includes a paint circulation barrel, a paint return pipe, a temperature control system for adjusting the paint temperature and a viscosity detector for detecting the viscosity of the paint. The paint supply barrel is connected to the paint circulation barrel, and the paint circulation barrel, the temperature control system, the viscosity detector and the roller paint tray are connected in sequence through the paint supply pipe. The bottom of the roller paint tray is connected to the paint circulation barrel through the paint return pipe.

2. The paint supply circulation system as claimed in claim 1, characterized in that: The paint liquid supply barrel and the paint circulation barrel are arranged side by side, and pneumatic diaphragm pumps are respectively arranged on the paint liquid supply barrel and the paint circulation barrel.

3. The paint supply circulation system according to claim 1, characterized in that: The temperature control system and the viscosity detector are both arranged on the side of the roller coating paint tray.

4. The paint supply circulation system according to claim 1, characterized in that: A filter is provided corresponding to the paint return pipeline.

5. The paint supply circulation system as claimed in claim 1, characterized in that: The viscosity detector is an online viscometer.

6. The paint supply circulation system according to claim 1, characterized in that: The paint liquid supply barrel is provided with a solvent adding port and a stirrer.

7. The paint supply circulation system as claimed in claim 2, characterized in that: The device also comprises a controller, and the temperature control system, the viscosity detector and the pneumatic diaphragm pump are all connected to the controller.

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