A high-precision coating supply system

Abstract

The utility model discloses a kind of high-precision coating feed system, including material bucket, feed pump and material lifting control structure, the height of the feed pump inlet interface is as liquid level reference line;Liquid level sensor is inserted and arranged on the material bucket top;The liquid level sensor is electrically connected with material lifting control structure by controller;Material lifting control structure can be according to liquid level sensor feedback signal, drive material bucket to rise or descend, make the liquid level height in material bucket always with liquid level reference line flush.This utility model takes the height position of feed pump inlet interface as reference, by automatically controlling material lifting, always keep flush between material liquid level and feed pump interface height, no longer need personnel intervention, liquid level height adjustment is more accurate, to realize the material liquid flow and pressure stable consistency of material pump supply, realize high-precision and high uniformity coating.

Description

Technical Field

[0001] This utility model relates to the field of chemical and pharmaceutical machinery technology, and more specifically, to a high-precision coating feeding system. Background Technology

[0002] Currently, when pharmaceutical or chemical companies produce coatings or other products that require coating, the material supply for coating equipment is mostly provided by a material tank, and then the material is delivered into the coating head by a material pump.

[0003] However, as materials are used and consumed, the liquid level in the material tank gradually decreases, and the load on the feed pump continuously increases. This causes fluctuations in the flow rate of the liquid supplied by the feed pump, affecting the stability of the coating head pressure and thus impacting coating accuracy and uniformity. Currently, to address the problem of unstable supply caused by the drop in liquid level, a manual lifting trolley is typically installed below the material tank. By raising the height of the material tank, the liquid level can be adjusted. However, the manual lifting trolley requires operators to manually raise and lower it in real time to adjust the liquid level, which is labor-intensive. Furthermore, manual raising and lowering lacks a reference point, leading to insufficient or excessive lifting distances, resulting in frequent fluctuations in the flow rate of the liquid supplied by the feed pump, further affecting the stability of the coating head pressure.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The technical problem this invention aims to solve is that manual lifting carts require operators to manually raise and lower the material platform in real time to adjust the liquid level, resulting in high workload. Furthermore, manual lifting lacks a reference point, leading to insufficient or excessive lifting distance, which causes frequent fluctuations in the flow rate of the material supplied by the pump. The goal is to provide a high-precision coating material supply system that uses the height of the pump inlet as a reference. By automatically controlling the lifting of the material platform, the system keeps the liquid level flush with the pump inlet height, eliminating the need for manual intervention. This results in more accurate liquid level adjustment, stable and consistent flow rate and pressure of the material supplied by the pump, achieving high-precision and highly uniform coating.

[0006] This utility model is achieved through the following technical solution:

[0007] In the first aspect, this utility model provides a high-precision coating feeding system, including a material bucket, a feeding pump and a material lifting control structure, wherein the height of the feeding pump's inlet interface serves as a liquid level reference line.

[0008] A liquid level sensor is inserted and installed above the material tank;

[0009] The liquid level sensor is electrically connected to the material lifting control structure via a controller;

[0010] The material lifting control structure can drive the material bucket to rise or fall according to the feedback signal from the liquid level sensor, so that the liquid level in the material bucket is always level with the liquid level reference line.

[0011] This invention uses the height of the feed pump inlet as a reference and automatically controls the material lifting and lowering to keep the material level flush with the feed pump inlet height at all times, eliminating the need for human intervention. The liquid level adjustment is more accurate, thereby achieving stable and consistent flow rate and pressure of the material supplied by the pump, and realizing high-precision and high-uniformity coating.

[0012] In one specific embodiment, the material lifting control structure includes a lifting motor and a material platform. The material bucket is placed on the material platform, and the lifting motor can drive the material platform to rise or fall.

[0013] In one specific embodiment, the material lifting control structure further includes a platform mounting frame, one end of which is slidably mounted on the platform mounting frame, and the end of which can move up and down along the platform mounting frame under the drive of a lifting motor.

[0014] In one specific embodiment, the material lifting control structure further includes a lifting fixed wheel installed on the top of the platform mounting frame, and a lifting cable is installed on the material platform. The end of the lifting cable passes around the lifting fixed wheel and is connected to the lifting motor.

[0015] In one specific embodiment, an upper limit switch and a lower limit switch are installed above the material platform on the platform mounting frame.

[0016] In one specific embodiment, the controller includes an automatic mode and a manual mode, which are switched by a rotary switch on the controller; the automatic mode automatically controls the lifting and lowering of the material container based on feedback signals from a liquid level sensor, and the manual mode controls the lifting and lowering of the material container by jogging a lifting button switch.

[0017] In this invention, the control is divided into manual and automatic modes. The manual / automatic mode switching is completed by the knob switch of the controller. In manual mode, the rising / falling is completed by the push-button switch. When the material rises to the upper limit switch, it forms an extreme position protection stop. When the material falls to the lower limit switch, it forms an extreme position protection stop. In automatic mode, the rising of the material tank is controlled by the liquid level sensor. When the liquid level is lower than the liquid level reference line, the sensor gives a rising signal, the lifting motor starts, and drives the material platform to rise. When the liquid level rises to the liquid level reference line, the sensor gives a stop signal, the lifting motor stops, and the material liquid level is automatically aligned with the liquid level reference line.

[0018] In one specific embodiment, the bottom of the material barrel is provided with a discharge port, which is connected to the inlet of the feeding pump through a first feeding hose.

[0019] In one specific embodiment, the discharge port of the feed pump is connected to the coating head via a second feed hose.

[0020] In one specific embodiment, the position of the liquid level sensor is fixed relative to the feed pump.

[0021] The high-precision coating feeding system of this utility model is used in the following specific way:

[0022] (1) Adjust the height of the material platform below the material tank so that the liquid level in the material tank is level with the liquid level baseline;

[0023] (2) Start the feed pump, and the material is fed into the coating head from the bottom of the material tank;

[0024] (3) As the coating process proceeds, the liquid level in the material tank gradually decreases, and the liquid level sensor sends a signal to the controller that the liquid level value is lower than the liquid level reference line.

[0025] (4) After receiving and analyzing the signal, the controller sends a signal to the lifting motor. The lifting motor starts and the material platform moves upward under the action of the lifting cable until the liquid level in the material tank is level with the liquid level baseline again.

[0026] (5) Repeat the above operation until the material platform contacts the limit switch.

[0027] The invention of this utility model does not involve improving the control program. The control program for controlling the lifting and lowering of the material platform can be implemented using a conventional logic controller, so it will not be described in detail.

[0028] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0029] 1. The high-precision coating feeding system provided by this utility model embodiment uses the height position of the feed pump inlet interface as a reference. By automatically controlling the material lifting and lowering, the material liquid level is always kept level with the height of the feed pump interface, eliminating the need for human intervention. The liquid level adjustment is more accurate, thereby achieving stable and consistent flow rate and pressure of the material supplied by the pump, and realizing high-precision and high-uniformity coating.

[0030] 2. The high-precision coating feeding system provided in this utility model embodiment uses a liquid level sensor to control the rise of the material tank. When the liquid level is lower than the liquid level reference line, the sensor gives a rise signal. When the liquid level rises to the liquid level reference line, the sensor gives a stop signal, thereby realizing automatic leveling control between the material liquid level and the liquid level reference line.

[0031] 3. The high-precision coating feeding system provided in this utility model embodiment can realize automatic control of the material liquid level of the coating machine, reduce the impact of liquid level changes on coating accuracy and coating uniformity, and achieve product quality improvement and yield increase. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the exemplary embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the existing coating material supply system;

[0034] Figure 2 A schematic diagram of the high-precision coating feeding system provided in this embodiment of the utility model;

[0035] Figure 3 The circuit control schematic diagram provided for the embodiments of this utility model.

[0036] The attached diagram shows the markings and corresponding component names:

[0037] 1-Lifting motor, 2-Controller, 31-Upper limit switch, 32-Lower limit switch, 4-Material bucket, 5-Level sensor, 6-Level reference, 71-First feeding hose, 72-Second feeding hose, 8-Feeding pump, 9-Coating head, 10-Material platform, 11-Platform mounting frame, 12-Lifting wheel, 13-Lifting cable. Detailed Implementation

[0038] 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 embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0039] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, well-known structures are not specifically described in order to avoid obscuring the present invention.

[0040] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] In the description of this utility model, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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 limiting the scope of protection of this utility model.

[0042] Currently, pharmaceutical and chemical companies typically use material tanks to supply materials to coating equipment when producing coating agents or other products that require coating. A feed pump then powers the process to deliver the liquid material into the coating head. Figure 1 As shown.

[0043] However, as materials are used and consumed, the liquid level in the material tank gradually decreases, and the load on the feed pump continuously increases. This causes fluctuations in the flow rate of the liquid supplied by the feed pump, affecting the stability of the coating head pressure and thus impacting coating accuracy and uniformity. Currently, to address the problem of unstable supply caused by the drop in liquid level, a manual lifting trolley is typically installed below the material tank. By raising the height of the material tank, the liquid level can be adjusted. However, the manual lifting trolley requires operators to manually raise and lower it in real time to adjust the liquid level, which is labor-intensive. Furthermore, manual raising and lowering lacks a reference point, leading to insufficient or excessive lifting distances, resulting in frequent fluctuations in the flow rate of the liquid supplied by the feed pump, further affecting the stability of the coating head pressure.

[0044] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0045] Example 1

[0046] like Figure 2As shown, this utility model embodiment provides a high-precision coating feeding system, including a material tank 4, a feeding pump 8 and a material lifting control structure, wherein the height of the feeding pump 8 inlet is used as the liquid level reference line 6.

[0047] A liquid level sensor 5 is inserted and installed above the material tank 4;

[0048] The liquid level sensor 5 is electrically connected to the material lifting control structure via the controller 2;

[0049] The material lifting control structure can drive the material tank 4 to rise or fall according to the feedback signal from the liquid level sensor 5, so that the liquid level in the material tank 4 is always level with the liquid level reference line 6.

[0050] This invention uses the height of the feed pump inlet as a reference and automatically controls the material lifting and lowering to keep the material level flush with the feed pump inlet height at all times, eliminating the need for human intervention. The liquid level adjustment is more accurate, thereby achieving stable and consistent flow rate and pressure of the material supplied by the pump, and realizing high-precision and high-uniformity coating.

[0051] In one specific embodiment, the material lifting control structure includes a lifting motor 1 and a material platform 10. The material bucket 4 is placed on the material platform 10, and the lifting motor 1 can drive the material platform 10 to rise or fall.

[0052] In one specific embodiment, the material lifting control structure further includes a platform mounting frame 11, one end of the material platform 10 is slidably mounted on the platform mounting frame 11, and the end of the material platform 10 can move up and down along the platform mounting frame 11 under the drive of the lifting motor 1.

[0053] In one specific embodiment, the material lifting control structure further includes a lifting fixed wheel 12 installed on the top of the platform mounting frame 11, and a lifting cable 13 is installed on the material platform 10. The end of the lifting cable 13 passes around the lifting fixed wheel 12 and is connected to the lifting motor 1.

[0054] In one specific embodiment, a limit switch upper 31 and a limit switch lower 32 are installed above the material platform 10 on the platform mounting frame 11.

[0055] In one specific embodiment, the controller 2 includes an automatic mode and a manual mode, which are switched by a rotary switch on the controller 2; the automatic mode automatically controls the lifting and lowering of the material tank 4 by the feedback signal from the liquid level sensor 5, and the manual mode controls the lifting and lowering of the material tank 4 by the inching control of the lifting button switch.

[0056] like Figure 3As shown, in this utility model, the control is divided into manual and automatic modes. The manual / automatic mode switching is completed by the knob switch of the controller. In manual mode, the rising / falling is completed by the push-button switch. When it rises to the upper limit switch, it forms an extreme position protection stop. When it falls to the lower limit switch, it forms an extreme position protection stop. In automatic mode, the rising of the material tank is controlled by the liquid level sensor. When the liquid level is lower than the liquid level reference line, the sensor gives a rising signal, the lifting motor starts, and drives the material platform to rise. When the liquid level rises to the liquid level reference line, the sensor gives a stop signal, the lifting motor stops, and the material liquid level is automatically aligned with the liquid level reference line.

[0057] In one specific embodiment, the bottom of the material barrel 4 is provided with a discharge port, which is connected to the inlet of the feeding pump 8 through a first feeding hose 71.

[0058] In one specific embodiment, the discharge port of the feed pump 8 is connected to the coating head 9 via the second feed hose 72.

[0059] In one specific embodiment, the position of the liquid level sensor 5 is fixed relative to the feed pump 8.

[0060] The high-precision coating feeding system of this utility model is used in the following specific way:

[0061] (1) Adjust the height of the material platform below the material tank so that the liquid level in the material tank is level with the liquid level baseline;

[0062] (2) Start the feed pump, and the material is fed into the coating head from the bottom of the material tank;

[0063] (3) As the coating process proceeds, the liquid level in the material tank gradually decreases, and the liquid level sensor sends a signal to the controller that the liquid level value is lower than the liquid level reference line.

[0064] (4) After receiving and analyzing the signal, the controller sends a signal to the lifting motor. The lifting motor starts and the material platform moves upward under the action of the lifting cable until the liquid level in the material tank is level with the liquid level baseline again.

[0065] (5) Repeat the above operation until the material platform contacts the limit switch.

[0066] When all the liquid material in the material tank has been supplied, i.e., the material platform rises to the limit switch, stop rising at this point, lower the material platform to the lowest point and make contact with the lower limit switch, replenish the liquid material in the material tank, and then continue the above operation steps.

[0067] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high-precision coating feeding system, characterized in that, It includes a material bucket (4), a feeding pump (8) and a material lifting control structure, wherein the height of the feeding pump (8) inlet is used as the liquid level reference line (6). A liquid level sensor (5) is inserted above the material tank (4); The liquid level sensor (5) is electrically connected to the material lifting control structure via the controller (2); The material lifting control structure can drive the material tank (4) to rise or fall according to the feedback signal from the liquid level sensor (5), so that the liquid level in the material tank (4) is always level with the liquid level reference line (6).

2. The high-precision coating feeding system according to claim 1, characterized in that, The material lifting control structure includes a lifting motor (1) and a material platform (10). The material bucket (4) is placed on the material platform (10), and the lifting motor (1) can drive the material platform (10) to rise or fall.

3. The high-precision coating feeding system according to claim 2, characterized in that, The material lifting control structure also includes a platform mounting frame (11). One end of the material platform (10) can be slidably mounted on the platform mounting frame (11), and the end of the material platform (10) can move up and down along the platform mounting frame (11) under the drive of the lifting motor (1).

4. The high-precision coating feeding system according to claim 3, characterized in that, The material lifting control structure also includes a lifting fixed wheel (12) installed on the top of the platform mounting frame (11), and a lifting cable (13) is installed on the material platform (10). The end of the lifting cable (13) passes around the lifting fixed wheel (12) and is connected to the lifting motor (1).

5. A high-precision coating feeding system according to claim 4, characterized in that, A limit switch (31) and a limit switch (32) are installed above the material platform (10) on the platform mounting frame (11).

6. The high-precision coating feeding system according to claim 1, characterized in that, The controller (2) includes an automatic mode and a manual mode, which are switched by a rotary switch on the controller (2).

7. A high-precision coating feeding system according to claim 6, characterized in that, The automatic mode automatically controls the material bucket (4) to rise and fall by means of a feedback signal from the liquid level sensor (5), while the manual mode controls the material bucket (4) to rise and fall by means of a jog switch between the up and down buttons.

8. The high-precision coating feeding system according to claim 1, characterized in that, The bottom of the material barrel (4) is provided with a discharge port, which is connected to the inlet of the feed pump (8) through the first feed hose (71).

9. A high-precision coating feeding system according to claim 1, characterized in that, The discharge port of the feed pump (8) is connected to the coating head (9) through the second feed hose (72).

10. A high-precision coating feeding system according to claim 1, characterized in that, The position of the liquid level sensor (5) is fixed relative to the feed pump (8).

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