Feeding device with recovery function

Abstract

The feeding device with the recovery function comprises a material groove, a low-position material groove, a material transfer pump and a high-position material groove, the material groove is connected with the low-position material groove through a material return pipe, the low-position material groove is connected with the high-position material groove through a transfer material pipe, the material transfer pump is installed on the pipe section of the transfer material pipe, and the material transfer pump is connected with the high-position material groove through a material return pipe. The high-position material tank is higher than the material tank and the low-position material tank and is connected with the material tank through a feeding pipe, the high-position material tank is connected with the low-position material tank through a recycling pipeline, and a constant-pressure safety valve is arranged on the recycling pipeline, so that the problem of bubbles is solved, the high-position material tank is connected with the low-position material tank through the recycling pipeline, and the constant-pressure safety valve is arranged on the recycling pipeline. And the materials can be recycled in time under the condition that the materials are overflowed.

Description

Technical Field

[0001] The utility model belongs to the technical field of coating feeding devices, and in particular relates to a feeding device with a recycling function. Background Art

[0002] At present, in the field of printing technology, when coating machines are in large-scale production, the uniformly stirred coating liquid is pumped from the coating storage barrel into the rectangular coating machine material tank with an air pump during coating. The storage barrel is generally equipped with a stirring paddle, which helps the uniformity of the slurry, but cannot solve the impact of bubbles on subsequent coating processes, nor can it automatically recover and reuse the overflowing coating liquid after coating. Utility Model Content

[0003] In order to overcome the above technical problems existing in the prior art, the purpose of the utility model is to provide a feeding device with a recovery function, which not only solves the problem of bubbles, but also completes the automatic recovery of the feed liquid.

[0004] The utility model provides a feeding device with a recycling function, comprising a material trough, a low-level material trough, a material transfer pump, and a high-level material trough. The material trough is connected to the low-level material trough through a return pipe, the low-level material trough is connected to the high-level material trough through a transfer pipe, the material transfer pump is installed on the transfer pipe section, the high-level material trough is higher than the material trough and the low-level material trough, and is connected to the material trough through a feed pipe, the high-level material trough is connected to the low-level material trough through a recycling pipeline, and a constant pressure safety valve is arranged on the recycling pipeline.

[0005] The internal cavity of the high-level material trough includes, from bottom to top, a connected conical cavity, a cylindrical cavity and an air collecting cavity. The feed port of the high-level material trough is located in the cylindrical cavity, the discharge port of the high-level material trough is located at the bottom of the conical cavity, and the air collecting cavity is connected to the low-level material trough through a recovery pipeline.

[0006] A hole plate structure is provided between the gas collecting cavity and the cylindrical cavity, and a circular hole array or an equilateral hexagonal hole array is arranged on the hole plate structure.

[0007] The inner diameter of the conical cavity is the same as that of the cylindrical cavity, and the gas collecting cavity is in a circular arch shape.

[0008] A return port is provided at the bottom of the material trough, a feed port is provided above the low-level material trough, a filter screen is provided at the feed port, one end of the return pipe is connected to the return port, and the other end is connected to the feed port.

[0009] The transfer pipe and the feed pipe are both provided with flow controllers.

[0010] The high-level trough is located 3-6 meters higher than the trough and the low-level trough.

[0011] A trough feed port is provided in the middle of the outer wall of the trough, a feed buffer plate is provided inside the trough opposite to the trough feed port, a micro-concave roller is provided above the trough, and a scraper is provided on one side of the micro-concave roller.

[0012] The feeding device with recycling function provided by the utility model has the beneficial effect that a high-level material barrel is provided, and a material transfer pump first pumps the material into the high-level material trough, a certain amount of bubbles are generated in the material liquid and suspended on the liquid surface in the high-level material trough, and then the material in the high-level material trough is gravity-coated to reduce the generation of bubbles; the high-level material trough is connected to the low-level material trough through a recycling pipeline, and the material can be recovered in time when the material is overflowing; a conical cavity is provided at the bottom of the high-level material trough, which is not easy to produce dead corners, and the material liquid can be fully flushed in the conical cavity to avoid local stagnation of the material liquid, which is conducive to the uniform dispersion and output of the material liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0014] Note in the figure:

[0015] 1. High-level material trough; 2. Flow controller; 3. Constant pressure safety valve; 4. Transfer material pipe; 5. Material transfer pump; 6. Low-level material trough; 7. Filter screen; 8. Return pipe; 9. Return port; 10. Micro-concave roller; 11. Scraper; 12. Feed buffer plate; 13. Feed port of the trough; 14. Feed pipe; 15. Recovery pipeline; 101. Discharge port; 102. Conical cavity; 103. Cylindrical cavity; 104. Feed port; 105. Gas collecting cavity; 106. Overflow recovery port; 107. Orifice plate structure. DETAILED DESCRIPTION

[0016] The feeding device with recycling function provided by the utility model is described in detail below with reference to the accompanying drawings and in combination with an embodiment.

[0017] Example

[0018] Reference Figure 1 The feeding device with recycling function of this embodiment includes a material trough, a low-level material trough 6, a material transfer pump 5, and a high-level material trough 1. The material trough is connected to the low-level material trough 6 through a return pipe 8, and the low-level material trough 6 is connected to the high-level material trough 1 through a transfer pipe 4. The material transfer pump 5 is installed on the pipe section of the transfer pipe 4. The position of the high-level material trough 1 is higher than that of the material trough and the low-level material trough 6, and is connected to the material trough through a feed pipe 14. The high-level material trough 1 is connected to the low-level material trough 6 through a recovery pipeline 15, and a constant pressure safety valve 3 is provided on the recovery pipeline 15.

[0019] The internal cavity of the high-level material trough 1 includes, from bottom to top, a connected conical cavity 102, a cylindrical cavity 103 and an air collecting cavity 105. The feed port 104 of the high-level material trough 1 is located in the cylindrical cavity 103, the discharge port 101 of the high-level material trough 1 is located at the bottom of the conical cavity 102, and the air collecting cavity 105 is connected to the low-level material trough 6 through a recovery pipeline 15.

[0020] A hole plate structure 107 is disposed between the gas collecting cavity 105 and the cylindrical cavity 103 , and a circular hole array or an equilateral hexagonal hole array is arranged on the hole plate structure 107 .

[0021] The inner diameters of the conical cavity 102 and the cylindrical cavity 103 are the same, and the gas collecting cavity 105 is in a circular arch shape.

[0022] A return port 9 is provided at the bottom of the material trough, a feed port is provided above the low-level material trough 6, a filter screen 7 is provided at the feed point, one end of the return pipe 8 is connected to the return port 9, and the other end is connected to the feed port.

[0023] A recovery overflow port 106 is provided at the top of the gas collecting chamber 105 , one end of the recovery pipeline 15 is connected to the recovery overflow port 106 , and the other end is connected to a feed port provided above the low-level material trough 6 .

[0024] The transfer pipe 4 and the feed pipe 14 are both provided with a flow controller 2 .

[0025] The high-level trough 1 is located 3-6 meters higher than the trough and the low-level trough.

[0026] A trough feed port 13 is provided in the middle of the outer wall of the trough, a feed buffer plate 12 is provided inside the trough opposite to the trough feed port, a micro-concave roller 10 is provided above the trough, and a scraper 11 is provided on one side of the micro-concave roller 10.

[0027] By setting a high-level material tank 1, the material transfer pump 5 is used to pump the coating liquid from the low-level material tank 6 into the high-level material tank 1. The high-level material tank 1 is provided with a perforated plate structure 107 for filtering and reducing bubbles. A small amount of bubbles will also be suspended on the liquid surface in the high-level material tank 1, and the liquid transported to the material tank by the bottom conical cavity 102 does not contain bubbles, which effectively avoids the influence of bubbles on the coating and printing quality. The high-level material tank stores and maintains a certain thickness of liquid, and even if the material is not added in time, it will not cause the material tank to break; the high-level material tank is connected to the low-level material tank 6 through the recovery pipeline 15, and the material can be recovered in time when the material is overflowing; a filter screen is set at the feed inlet to effectively prevent tiny floating impurities from entering the material tank, increase the cleanliness of the coating liquid, and improve product quality.

Claims

1. A feeding device with recycling function, characterized in that: It includes a material trough, a low-level material trough, a material transfer pump, and a high-level material trough. The material trough is connected to the low-level material trough through a return pipe, and the low-level material trough is connected to the high-level material trough through a transfer pipe. The material transfer pump is installed on the transfer pipe section. The high-level material trough is higher than the material trough and the low-level material trough, and is connected to the material trough through a feed pipe. The high-level material trough is connected to the low-level material trough through a recovery pipeline, and a constant pressure safety valve is provided on the recovery pipeline.

2. The feeding device with recycling function according to claim 1 is characterized in that: The internal cavity of the high-level material trough includes, from bottom to top, a connected conical cavity, a cylindrical cavity and an air collecting cavity. The feed port of the high-level material trough is located in the cylindrical cavity, the discharge port of the high-level material trough is located at the bottom of the conical cavity, and the air collecting cavity is connected to the low-level material trough through a recovery pipeline.

3. The feeding device with recycling function according to claim 2 is characterized in that: A hole plate structure is provided between the gas collecting cavity and the cylindrical cavity, and a circular hole array or an equilateral hexagonal hole array is arranged on the hole plate structure.

4. The feeding device with recycling function according to claim 2 is characterized in that: The inner diameter of the conical cavity is the same as that of the cylindrical cavity, and the gas collecting cavity is in a circular arch shape.

5. The feeding device with recycling function according to claim 1 is characterized in that: A return port is provided at the bottom of the material trough, a feed port is provided above the low-level material trough, a filter screen is provided at the feed port, one end of the return pipe is connected to the return port, and the other end is connected to the feed port.

6. The feeding device with recycling function according to claim 1 is characterized in that: The transfer pipe and the feed pipe are both provided with flow controllers.

7. The feeding device with recycling function according to claim 1 is characterized in that: The high-level trough is located 3-6 meters higher than the trough and the low-level trough.

8. The feeding device with recycling function according to claim 1 is characterized in that: A trough feed port is provided in the middle of the outer wall of the trough, a feed buffer plate is provided inside the trough opposite to the trough feed port, a micro-concave roller is provided above the trough, and a scraper is provided on one side of the micro-concave roller.

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