Coating liquid supply system

Abstract

The utility model provides a coating liquid supply system which comprises a storage container and a liquid conveying pipeline, wherein a storage cavity is defined in the storage container; the liquid conveying pipeline is used for conveying coating liquid in the storage cavity to coating equipment; the device further comprises a pressure supply assembly which is configured to be capable of providing set pressure for the interior of the storage cavity so that the coating liquid in the storage cavity can be output through the liquid conveying pipeline under the action of the set pressure, and the coating liquid is prevented from being sheared. According to the utility model, the coating liquid is conveyed by adopting a pressurizing mode of the pressure supply assembly instead of a traditional mechanical pump transmission mode, so that the coating liquid can be prevented from being damaged by shearing of the pump in the conveying process, and the quality of the coating liquid is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of optical film coating, in particular to a coating liquid supply system. Background Art

[0002] Traditional roll-to-roll coating technology is widely used in the coating and lamination of surface functional layers of paper, cloth, metal foil, plastic film, etc. With the continuous advancement of science and technology, it has been applied to optical functional films including electronic packaging materials, lithium battery electrode materials, and flat panel displays in recent years.

[0003] like Figure 1 As shown, in the prior art, during the continuous coating process, the coating liquid needs to be continuously transported to the coating device through a pump and a pipeline. These pumps include pneumatic pumps, peristaltic pumps, rotor pumps, screw pumps, gear pumps, etc. For pre-metered coating devices, including slot die coating, slope coating, and curtain coating, the coating thickness is mainly determined by the flow rate of the infusion pump, so an infusion pump with accurate metering is required. Currently, screw pumps and gear pumps are mainly used. However, the mechanical gears or rotating shafts in the structure of this metering pump will have a large shear force during the infusion process. For heat-sensitive coating liquids, the large shear force during the infusion process causes a thermal reaction, and the coating liquid solidifies, causing the infusion pump to jam and need to be shut down for processing, affecting production efficiency; or if the coating liquid contains particles, it is also easy to damage the particles when the gears are engaged during the infusion process, resulting in abnormal product appearance.

[0004] Therefore, it is necessary to propose a new liquid supply system to replace the traditional liquid supply technical solution of using a pump to supply liquid, so as to overcome the problems existing in the prior art. Utility Model Content

[0005] The utility model provides a coating liquid supply system, which uses a pressure supply component to pressurize the coating liquid and delivers it to the coating equipment via a delivery pipeline, thereby solving the problem that traditional mechanical pump delivery may cause shearing of the coating liquid and lead to deterioration of the coating liquid, thereby ensuring the quality of coating liquid delivery.

[0006] The utility model adopts the following technical scheme: The utility model provides a coating liquid supply system, including a storage container with a liquid storage cavity defined inside, and an infusion pipeline for conveying the coating liquid in the liquid storage cavity to a coating device; and also includes: a pressure supply component, which is configured to provide a set pressure to the liquid storage cavity so that the coating liquid in the liquid storage cavity is output through the infusion pipeline under the action of the set pressure to avoid shearing the coating liquid.

[0007] The above technical solution can be further improved as follows:

[0008] Furthermore, the set pressure is configured to be adjustable to adjust the output flow rate of the coating liquid.

[0009] Furthermore, the infusion pipeline is provided with a flow meter and / or a pressure regulator to adjust the set pressure.

[0010] Furthermore, the infusion pipeline is also provided with a filtering device suitable for filtering the coating liquid.

[0011] Furthermore, the infusion pipeline is also provided with a valve for controlling the opening and closing of the infusion pipeline.

[0012] Furthermore, the pressure supply assembly includes an air supply pipe extending into the liquid storage chamber; and a gas generating device connected to the air supply pipe for generating and adjusting the gas pressure supplied to the liquid storage chamber.

[0013] Furthermore, the storage container is provided with at least one liquid inlet for inputting the coating liquid into the liquid storage cavity, and the liquid inlet is provided with a switch valve.

[0014] Furthermore, the storage container is provided with an exhaust pipe, and the exhaust pipe is provided with a safety valve; wherein, when the pressure in the liquid storage chamber reaches a set pressure value, the safety valve can automatically open to release the pressure in the liquid storage chamber.

[0015] Furthermore, a liquid level sensor is provided in the storage container for detecting the liquid level of the coating liquid.

[0016] Furthermore, it also includes a moving device, and the coating liquid supply system is configured on the moving device.

[0017] Due to the adoption of the above technical solution, the utility model has the following technical effects:

[0018] The utility model includes a storage container and a pressure supply component. The pressure supply component can deliver gas of set pressure into a liquid storage chamber and stably maintain the stability of the gas pressure, thereby pressurizing the coating liquid in the liquid storage chamber, so that a set amount of coating liquid in the liquid storage chamber can be accurately squeezed out and then delivered to the coating equipment via an infusion pipeline, thereby ensuring the accuracy and stability of the coating liquid delivery; and the use of air pressure pressurization can also solve the problem that traditional mechanical pumps cause shearing of the coating liquid, resulting in deterioration of the coating liquid, thereby ensuring the quality of coating liquid delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present utility model, rather than limiting the present utility model.

[0020] Figure 1 It is a liquid supply system used in the prior art.

[0021] Figure 2 It is a structural schematic diagram of the liquid supply system in the utility model.

[0022] Figure 3 It is a front view of the liquid supply system in the utility model.

[0023] Figure 4 It is a front view of the storage container in the utility model.

[0024] Figure 5 It is a schematic diagram of the internal structure of the storage container in the utility model.

[0025] Explanation of the reference numerals: 1-storage container; 1a-liquid storage chamber; 1b-liquid inlet; 2-infusion pipeline; 3-air supply pipe; 4-pressure regulating valve; 5-valve; 6-filter device; 7-pressure regulator; 8-flow meter; 9-exhaust pipe; 10-safety valve; 11-liquid level sensor; 12-moving device. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. The components of the embodiments of the utility model described and shown in the drawings herein can be arranged and designed in various different configurations. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] Unless otherwise defined, the technical terms or scientific terms used in this patent document shall be the common meanings understood by people with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the utility model patent specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "one" or "the" do not indicate a quantity limit, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0031] See also Figures 2 to 5 As shown, the utility model provides a coating liquid supply system, including a storage container 1 with a liquid storage chamber 1a defined therein, and an infusion pipeline 2 for conveying the coating liquid in the liquid storage chamber 1a to a coating device; and also includes: a pressure supply component, which is configured to provide a set pressure to the liquid storage chamber 1a, so that the coating liquid in the liquid storage chamber 1a is output through the infusion pipeline 2 under the action of the set pressure to avoid shearing of the coating liquid.

[0032] like Figure 2 and Figure 3As shown, the storage container 1 includes a barrel body and a barrel cover covering the barrel body, and the barrel cover and the barrel body are connected by hooks to achieve a sealed connection between the two, thereby ensuring that the pressure in the liquid storage chamber 1a is stable. In the present embodiment, the storage container is made of a material with anti-corrosion and heat-insulating functions to prevent the coating liquid from reacting or changing temperature due to contact with the inner wall of the container, thereby ensuring the storage quality of the coating liquid; wherein the pressure supply component includes an air supply pipe 3 extending into the liquid storage chamber 1a, and a gas generating device connected to the air supply pipe 3, the gas generating device is connected to the air supply pipe 3, and is used to generate and adjust the gas pressure supplied to the liquid storage chamber 1a, thereby squeezing out the coating liquid in the liquid storage chamber 1a and delivering it to the coating equipment via the infusion pipeline 2; preferably, a pressure regulating valve 4 is attached to the air supply pipe 3, which can accurately adjust the gas pressure input into the liquid storage chamber 1a, thereby adjusting the output flow rate of the coating liquid; in the present embodiment, the use of a traditional mechanical pump is replaced by the use of air pressure pressurization, which not only solves the problem that the traditional mechanical pump causes shearing of the coating liquid, resulting in deterioration of the coating liquid, and ensures the quality of coating liquid delivery, but also reduces the volume of the equipment, making it easy to move and improving the convenience of use. It should be noted that the gas generating device may be an air compressor, a gas tank, etc., and the gas generated by the gas generating device may be air, nitrogen, or other inert gas that does not react with the coating liquid, etc. Furthermore, a dehumidifier or a gas dryer for dehumidifying the gas source delivered to the liquid storage chamber 1a is also included to reduce the influence of humidity in the gas source on the coating liquid and ensure the quality of the coating liquid.

[0033] Furthermore, the set pressure is configured to be adjustable so as to accurately adjust the output flow rate of the coating liquid according to the use requirements to meet the coating operation requirements; specifically, the infusion pipeline 2 is configured with a flow meter 8 or a pressure regulator 7, or is configured with a flow meter 8 and a pressure regulator 7 at the same time. During the infusion process, the flow meter 8 can detect the delivery flow rate of the coating liquid in real time. Preferably, the flow meter 8 is configured to be able to compare the detected flow data with the set flow value. When the coating liquid flow in the infusion pipeline 2 is large or small, it will send a signal to the pressure supply component, so that the pressure supply component increases or decreases the pressure input into the liquid storage chamber 1a, thereby ensuring the stability of the flow output; the pressure regulator 7 can detect the delivery pressure of the coating liquid in real time, and by analyzing parameters such as the delivery flow rate and delivery pressure, it is convenient for the user to adjust the set pressure provided by the pressure supply component to ensure the stability of the coating liquid delivery during the continuous coating operation. As a preferred embodiment, it also includes a control system, which is electrically connected to the pressure supply component, the pressure sensor and the flow meter 8 to achieve automatic control of the coating liquid delivery process and ensure the stability of the coating liquid delivery.

[0034] Furthermore, the storage container 1 is provided with at least one liquid inlet 1b for inputting the coating liquid into the liquid storage chamber 1a, and the liquid inlet 1b is provided with a switch valve, which can be used to control the opening and closing of the liquid inlet 1b, so as to replenish the coating liquid to the storage container 1 when the coating liquid is insufficient, and close the liquid inlet 1b after the coating liquid is replenished, so as to ensure the air pressure in the liquid storage chamber 1a and the accuracy of coating liquid delivery. Figure 2 As shown, in this embodiment, the three liquid inlets 1b can be used to input different raw materials into the liquid storage chamber 1a, and mix them in the liquid storage chamber 1a to generate the required coating liquid; of course, the coating liquid can also be injected from multiple liquid inlets 1b to improve the injection efficiency. The storage container 1 is also equipped with an exhaust pipe 9, and the exhaust pipe 9 is equipped with a safety valve 10; wherein, when the pressure in the liquid storage chamber 1a reaches a set pressure value, the safety valve 10 can automatically open to release the pressure in the liquid storage chamber 1a, prevent damage to the device or leakage of the coating liquid, and ensure the safety of the device. In addition, as Figure 5 As shown, a liquid level sensor 11 is provided in the storage container 1 to detect the liquid level of the coating liquid. The liquid level sensor 11 has a low liquid level alarm function and a high liquid level alarm function, and can issue a warning when the liquid level in the liquid storage chamber 1a is detected to be too low or too high, so as to prevent the coating liquid from being transported due to a low liquid level and leaking due to a high liquid level. Preferably, the liquid level sensor 11 can be an ultrasonic liquid level sensor.

[0035] Furthermore, the infusion pipeline 2 is also provided with a valve 5 for controlling the opening and closing of the infusion pipeline 2; the infusion pipeline 2 is also provided with a filter device 6 for filtering impurities and particles in the coating liquid to ensure the quality of the coating liquid. Optionally, the filter device 6 can be an existing product on the market, which is convenient to use; the valve 5 can be an electronically controlled valve to improve the automatic operation of the device.

[0036] like Figure 2 and Figure 3 As shown, as a preferred embodiment, it also includes a mobile device 12, and the coating liquid supply system is configured on the mobile device 12. The mobile device 12 can push the device to move, which is convenient for mobile operations, improves the transportation capacity and mobility of the device, and improves the use effect. In this embodiment, the mobile device 12 is configured as a cart, and the cart has a concave cavity formed by an inward depression, which can be used to collect the coating liquid that leaks out, avoids ground pollution, and is convenient for cleaning and maintenance. In addition, the bottom of the cart has a discharge port and a manual valve connected to the discharge port.

[0037] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A coating liquid supply system, comprising a storage container defining a liquid storage cavity therein, and a liquid delivery pipeline for delivering the coating liquid in the liquid storage cavity to a coating device; characterized in that: Also includes: The pressure supply component is configured to provide a set pressure to the liquid storage chamber, so that the coating liquid in the liquid storage chamber is output through the liquid delivery pipeline under the action of the set pressure to avoid shearing of the coating liquid.

2. The coating liquid supply system according to claim 1, characterized in that: The set pressure is configured to be adjustable to adjust the output flow rate of the coating liquid.

3. The coating liquid supply system according to claim 2, characterized in that: The infusion pipeline is provided with a flow meter and / or a pressure regulator to adjust the set pressure.

4. The coating liquid supply system according to claim 1, characterized in that: The liquid infusion pipeline is also provided with a filtering device for filtering the coating liquid.

5. The coating liquid supply system according to claim 1, characterized in that: The infusion pipeline is also provided with a valve for controlling the opening and closing of the infusion pipeline.

6. The coating liquid supply system according to claim 1, characterized in that: The pressure supply assembly comprises: an air supply pipe extending into the liquid storage chamber; and A gas generating device is communicated with the gas supply pipe and is used for generating and adjusting the gas pressure supplied to the liquid storage chamber.

7. The coating liquid supply system according to claim 1, characterized in that: The storage container is provided with at least one liquid inlet for inputting the coating liquid into the liquid storage cavity, and the liquid inlet is provided with a switch valve.

8. The coating liquid supply system according to claim 1, characterized in that: The storage container is provided with an exhaust pipe, and the exhaust pipe is provided with a safety valve; wherein, when the pressure in the liquid storage chamber reaches a set pressure value, the safety valve can automatically open to release the pressure in the liquid storage chamber.

9. The coating liquid supply system according to claim 1, characterized in that: A liquid level sensor is arranged in the storage container to detect the liquid level of the coating liquid.

10. The coating liquid supply system according to any one of claims 1 to 9, characterized in that: It also includes a moving device, and the coating liquid supply system is configured on the moving device.

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