Water-based paint production feeding device

Abstract

The utility model discloses a water -based paint production feeding device belongs to paint production feeding technical field, and the inlet of centrifugal pump impeller part is connected with infusion pipeline, is installed with first valve on infusion pipeline, and the outer end of infusion pipeline is equipped with cross -shaped pipeline, and the outer end of cross -shaped pipeline is connected with connecting pipeline, and the upper and lower ends of cross -shaped pipeline are connected with branch line, plug respectively, and water -based paint production raw materials are inputted on production line through infusion pipeline, and the other end of branch line is connected with backflushing pump and is installed with second valve on branch line. The common effect of centrifugal pump delivery system and flushing system has realized the efficient delivery of water -based paint production raw materials and the overall cleaning of pipeline. In normal production, centrifugal pump delivery system ensures the stable supply of raw materials, and when cleaning is needed, the flushing system can quickly remove impurities and residues in the pipeline, prevent clogging and pollution, and ensure the continuity of the production process and product quality.

Description

Technical Field

[0001] This utility model relates to the field of coating production feeding technology, and in particular to a water-based coating production feeding device. Background Technology

[0002] Water-based coatings are environmentally friendly coatings that use water as a solvent or dispersion medium. Additives are added to meet the special requirements of water-based paints, such as rust inhibitors, hardeners, matting agents, scratch-resistant agents, slip agents, anti-blocking agents, crosslinking agents, water-repellent agents, abrasion-resistant agents, and ultraviolet absorbers.

[0003] In the production process of water-based coatings, the feeding device is a key piece of equipment to ensure the accurate and uniform addition of raw materials. The required water is fed into the mixing tank through the first inlet, and the necessary chemical materials are fed into the connecting cylinder through the second inlet. Auxiliary devices (such as cylinders or pistons) are used to transport the materials to the delivery pipe, where they are sprayed into the water by nozzles. Simultaneously, a drive device (such as a motor) rotates the delivery pipe, further ensuring the materials are sprayed more evenly into the water.

[0004] In the production process of water-based coatings, although equipment such as centrifugal pumps, peristaltic pumps, and pneumatic diaphragm pumps can transport raw materials, the adhesion phenomenon on the pipe wall when centrifugal pumps transport water-based coating raw materials is mainly due to the characteristics of the medium and the structure of the equipment. Water-based coating raw materials often contain solid particles such as pigments, fillers, and emulsions, which are prone to forming a deposit layer on the inner wall of the pipeline during long-term transportation.

[0005] When the pump stops, residual materials accumulate towards the lower part of the pipe wall due to gravity, especially in horizontal pipe sections where hard scale easily forms. This adhesion not only reduces the effective flow area of ​​the pipeline but can also cause pipe blockage due to the drying and solidification of the materials. For example, when conveying water-based coatings with a high titanium dioxide content, the diameter of the centrifugal pump inlet pipe can shrink by 15% to 20% after 48 hours of continuous operation due to scaling. In addition, the shearing force generated by the high-speed rotation of the centrifugal pump impeller can disrupt the stability of some materials, causing tiny particles to precipitate and adhere to the pipe wall. Utility Model Content

[0006] The main objective of this invention is to provide a feeding device for water-based coating production, which can effectively solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A water-based coating production feeding device includes a base, a centrifugal pump drive and a centrifugal pump impeller, wherein the centrifugal pump impeller is located at the output end of the centrifugal pump drive, and the centrifugal pump drive and the centrifugal pump impeller are mounted on the base. The centrifugal pump impeller is connected to a liquid delivery pipe at its inlet, and a first valve is installed on the liquid delivery pipe. The outer end of the liquid delivery pipe is provided with a cross-shaped pipe, and the outer end of the cross-shaped pipe is connected to a connecting pipe. The upper and lower ends of the cross-shaped pipe are respectively connected to a secondary pipe and a plug. The water-based coating production raw materials are input into the production line through the liquid delivery pipe. A second valve is installed on the secondary pipeline, and a backwash pump is connected to the other end of the secondary pipeline. The other end of the backwash pump is connected to an inlet pipeline, and an electrically controlled valve is installed on the inlet pipeline. When the first valve is closed, the backwashing operation of the centrifugal pump inlet pipeline system is realized through the backwashing system.

[0008] In an optional embodiment of this application, both ends of the infusion pipeline are provided with flanges, which are connected to the inlet flange of the centrifugal pump impeller through the flanges, and a sealing ring is provided at the connection. The infusion pipeline and the first valve are connected through the flanges, and the first valve is a butterfly valve. In an optional embodiment of this application, the cross-shaped pipe is designed in a "+" shape, and flanges are provided at all three ends of the cross-shaped pipe. The secondary pipe is designed as an integral part of the cross-shaped pipe, and the cross-section of the secondary pipe is designed in an "L" shape. The secondary pipe and the second valve are connected by flanges, and a sealing ring is provided at the connection. The second valve is a ball valve. In an optional embodiment of this application, the upper end of the plug is provided with a filter screen cylinder, the filter screen cylinder includes an upper sealing cylinder and a filter cylinder, the filter cylinder is welded to the lower end of the upper sealing cylinder, and multiple sealing rings are fitted on the upper sealing cylinder and the plug. The plug is connected to the cross-shaped pipe through a flange and bolts. In an optional embodiment of this application, the backwash pump is connected to the auxiliary pipe and the inlet pipe via flanges and bolts, and a sealing ring is provided at the connection. The electrically controlled valve is connected to the inlet pipe via flanges and bolts, and the electrically controlled valve is a ball valve. In an optional embodiment of this application, when the cross-shaped pipe is inserted into the filter cylinder, the connecting pipe continuously supplies water, and then drains water through the bottom of the filter cylinder to achieve a forward flushing operation. When the first valve and the plug close the cross-shaped pipe, the backwash pump supplies water to achieve a backwashing operation of the cross-shaped pipe and the connecting pipe.

[0009] Compared with the prior art, the present invention has the following beneficial effects: The centrifugal pump delivery system allows raw materials for water-based coatings to be rapidly and efficiently fed into the production line, improving production efficiency. The first valve installed on the infusion pipeline precisely controls the liquid flow to meet diverse production needs, while the butterfly valve facilitates operation and adjustment. Flanges with sealing rings are used at both ends of the infusion pipeline and at the connection point with the first valve to ensure a tight connection, prevent leakage, and guarantee the stability and safety of the production process.

[0010] The flushing system, through the design of secondary pipes, a backwash pump, an inlet pipe, and electrically controlled valves, enables comprehensive backwashing of the centrifugal pump's inlet piping system. During forward flushing, a filter screen is inserted through a cross-shaped pipe, and water is continuously supplied to the pipeline for initial cleaning. During backwashing, closing the first valve and activating the backwash pump removes dirt and blockages from the pipeline, ensuring its cleanliness and unobstructed flow. The selection of a second valve and ball valve on the secondary pipe facilitates operation and provides excellent sealing performance, meeting the requirements for long-term use. The use of electrically controlled valves allows for remote control and adjustment, adapting to the needs of modern production.

[0011] The combined action of the centrifugal pump delivery system and the flushing system enables efficient transport of raw materials for water-based coating production and thorough cleaning of the pipelines. During normal production, the centrifugal pump delivery system ensures a stable supply of raw materials; when cleaning is required, the flushing system quickly removes impurities and residues from the pipelines, preventing blockages and contamination, thus guaranteeing the continuity of the production process and product quality. This design not only improves production efficiency but also reduces maintenance costs and downtime, providing strong support for the production of water-based coatings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a top view of the overall structure of this utility model; Figure 3 This is a side view of the overall structure of this utility model; Figure 4 This is a diagram illustrating the cross-shaped pipe, filter screen, plug, and secondary pipe of this utility model.

[0013] In the diagram: 1. Base; 2. Centrifugal pump drive unit; 3. Centrifugal pump impeller; 4. Infusion pipeline; 5. First valve; 6. Cross-shaped pipeline; 7. Plug; 8. Filter screen; 9. Connecting pipeline; 10. Secondary pipeline; 11. Second valve; 12. Backwash pump; 13. Inlet pipeline; 14. Electrically controlled valve. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] like Figure 1 - Figure 4As shown, a feeding device specifically designed for the production process of water-based coatings is meticulously constructed from key components such as a base 1, a centrifugal pump drive 2, and a centrifugal pump impeller 3. The centrifugal pump impeller 3 is cleverly positioned at the output end of the centrifugal pump drive 2, while the centrifugal pump drive 2 and the centrifugal pump impeller 3 are securely mounted on the base 1. This design ensures the stability of the entire device during operation.

[0016] At the inlet of the centrifugal pump impeller section 3, a liquid delivery pipe 4 is designed and closely connected to it. A crucial first valve 5 is also installed on the liquid delivery pipe 4, which precisely controls the flow of liquid. The outer end of the liquid delivery pipe 4 is connected to a cross-shaped pipe 6, and the outer end of the cross-shaped pipe 6 further extends into a connecting pipe 9 to achieve smooth and efficient liquid delivery. In addition, the upper and lower ends of the cross-shaped pipe 6 are respectively connected to auxiliary pipes 10 and plugs 7. Through the liquid delivery pipe 4, the raw materials for water-based coatings can be quickly and efficiently fed into the production line.

[0017] To further enhance the functionality of the device, a second valve 11 is installed on the secondary pipeline 10, and the other end of the secondary pipeline 10 is connected to a backwash pump 12. One end of the backwash pump 12 is connected to an inlet pipeline 13, on which an electrically controlled valve 14 is installed. By closing the first valve 5 and starting the backwash system, a comprehensive backwash operation can be performed on the centrifugal pump inlet pipeline system, thereby ensuring the cleanliness and unobstructed flow of the pipeline.

[0018] Both ends of the infusion pipeline 4 are equipped with flanges, which are tightly connected to the inlet flange of the centrifugal pump impeller section 3. A sealing ring is also provided at the connection to ensure a tight connection and prevent any possible leakage. The infusion pipeline 4 and the first valve 5 are also connected by flanges. The first valve 5 is a butterfly valve, which is easy to operate and adjust, and can meet different production needs.

[0019] The cross-shaped pipe 6 has an overall cross-shaped design, with flanges at all three ends for flexible connection to other components. The secondary pipe 10 is integrated with the cross-shaped pipe 6, and its cross-section is L-shaped, saving space and improving efficiency. The secondary pipe 10 and the second valve 11 are connected via flanges, with sealing rings at the connection to ensure a tight seal. The second valve 11 is a ball valve, which is easy to operate and provides excellent sealing performance, meeting the needs of long-term use.

[0020] The upper end of the plug 7 is equipped with a filter screen cylinder 8, which consists of an upper sealing cylinder and a filter cylinder, with the filter cylinder welded to the lower end of the upper sealing cylinder. Multiple sealing rings are fitted onto the upper sealing cylinder and the plug 7 to ensure optimal sealing. The plug 7 is connected to the cross-shaped pipe 6 via flanges and bolts, a connection method that is both robust and reliable.

[0021] The backwash pump 12 is connected to the auxiliary pipe 10 and the inlet pipe 13 via flanges and bolts. Sealing rings are installed at the connections to ensure tightness and prevent leakage. The electrically controlled valve 14 is also connected to the inlet pipe 13 via flanges and bolts. The electrically controlled valve 14 is also a ball valve, which facilitates remote control and adjustment, meeting the needs of modern production.

[0022] During forward flushing, the cross-shaped pipe 6 is inserted into the filter cylinder 8, and water is continuously supplied through the connecting pipe 9. The water drains through the bottom of the filter cylinder 8, achieving initial cleaning of the pipe. When it is necessary to close the cross-shaped pipe 6, the first valve 5 and the plug 7 are closed, and the backwash pump 12 starts supplying water, thus achieving backwashing of the cross-shaped pipe 6 and the connecting pipe 9. This design ensures the normal operation and efficient production of the entire system.

[0023] Securely mount the centrifugal pump drive unit 2 and the centrifugal pump impeller 3 onto the base 1, ensuring that the centrifugal pump impeller 3 is positioned at the output end of the centrifugal pump drive unit 2. Next, connect one end of the infusion pipeline 4 to the inlet flange of the centrifugal pump impeller 3 using a flange and sealing ring; leave the other end unsecured for future connections. Install the first valve 5 on the infusion pipeline 4; a butterfly valve is preferred for ease of operation and adjustment. Then, connect the cross-shaped pipeline 6 to the outer end of the infusion pipeline 4 via flanges; all three ports of the cross-shaped pipeline 6 are equipped with flanges for connecting other components. Install the secondary pipeline 10 and plug 7 at the upper and lower ends of the cross-shaped pipeline 6, respectively. The secondary pipeline 10 is an integral part of the cross-shaped pipeline 6, and its cross-section is L-shaped. Install the second valve 11 on the secondary pipeline 10; a ball valve is preferred for ease of operation. Install the filter screen cylinder 8 on the upper end of the plug 7. The filter screen cylinder 8 consists of an upper sealing cylinder and a filter cylinder, with the filter cylinder welded to the lower end of the upper sealing cylinder. Multiple sealing rings are fitted onto the upper sealing cylinder and plug 7 to ensure optimal sealing. Next, the backwash pump 12 is connected to the other end of the secondary pipe 10 via a flange and bolts. The other end of the backwash pump 12 is connected to the inlet pipe 13, and an electrically controlled valve 14 is installed on the inlet pipe 13. A ball valve is selected for remote control and adjustment. Finally, all connections are checked for secureness and reliability, and the sealing rings are verified to be in place, ensuring optimal stability and sealing of the entire device.

[0024] During forward flushing, the cross-shaped pipe 6 is inserted into the filter cylinder 8, and water is continuously supplied through the connecting pipe 9. The water drains through the bottom of the filter cylinder 8, achieving initial cleaning of the pipeline. During normal production, the first valve 5 is opened, and the second valve 11 and the electrically controlled valve 14 are closed. The raw materials for water-based coatings are efficiently fed into the production line through the inlet pipe 4 and the cross-shaped pipe 6. When backflushing is required, the first valve 5 is closed first, and then the backflushing pump 12 is started. Water is supplied through the inlet pipe 13 and the auxiliary pipe 10 into the cross-shaped pipe 6 and the connecting pipe 9, achieving a comprehensive backflushing of the pipeline system and ensuring the cleanliness and unobstructed flow of the pipeline.

[0025] During forward cleaning, open the water supply valve of connecting pipe 9, insert the cross-shaped pipe 6 into the filter cylinder 8, and allow water to flow through the bottom of the filter cylinder 8 to remove impurities and residues from the pipe. During backwashing, first close the first valve 5 and plug 7 (if there is a valve at plug 7, close it), then open the backwash pump 12 and the electrically controlled valve 14, allowing backwash water to flow through the inlet pipe 13, backwash pump 12, and auxiliary pipe 10 into the cross-shaped pipe 6 and connecting pipe 9 for backwashing to remove dirt and blockages from the pipe. After cleaning, close all valves and the backwash pump 12, and check that the pipes are unobstructed to ensure smooth operation for the next production run.

[0026] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A feeding device for water-based coating production, comprising a base (1), a centrifugal pump drive (2), and a centrifugal pump impeller (3), wherein the centrifugal pump impeller (3) is located at the output end of the centrifugal pump drive (2), and the centrifugal pump drive (2) and the centrifugal pump impeller (3) are mounted on the base (1), characterized in that: The centrifugal pump impeller (3) is connected to a liquid delivery pipe (4) at its inlet, and a first valve (5) is installed on the liquid delivery pipe (4). The outer end of the liquid delivery pipe (4) is provided with a cross-shaped pipe (6), and the outer end of the cross-shaped pipe (6) is connected to a connecting pipe (9). The upper and lower ends of the cross-shaped pipe (6) are respectively connected to a secondary pipe (10) and a plug (7). The water-based coating production raw materials are input into the production line through the liquid delivery pipe (4). A second valve (11) is installed on the secondary pipe (10), and a backwash pump (12) is connected to the other end of the secondary pipe (10). The other port of the backwash pump (12) is connected to the inlet pipe (13), and an electrically controlled valve (14) is installed on the inlet pipe (13). The first valve (5) is closed, and the backwash operation of the centrifugal pump inlet pipe system is realized through the backwash system.

2. The water-based coating production feeding device according to claim 1, characterized in that: Both ends of the infusion pipeline (4) are provided with flanges, and are connected to the inlet flange of the centrifugal pump impeller (3) through the flanges. A sealing ring is provided at the connection. The infusion pipeline (4) and the first valve (5) are connected through the flanges. The first valve (5) is a butterfly valve.

3. The water-based coating production feeding device according to claim 2, characterized in that: The cross-shaped pipe (6) is designed in a "+" shape. All three ports of the cross-shaped pipe (6) are equipped with flanges. The secondary pipe (10) is designed as an integral part of the cross-shaped pipe (6). The cross section of the secondary pipe (10) is designed in an "L" shape. The secondary pipe (10) and the second valve (11) are connected by a flange, and a sealing ring is provided at the connection. The second valve (11) is a ball valve.

4. The water-based coating production feeding device according to claim 3, characterized in that: The upper end of the plug (7) is provided with a filter cylinder (8), which includes an upper sealing cylinder and a filter cylinder. The filter cylinder is welded to the lower end of the upper sealing cylinder. Multiple sealing rings are fitted on the upper sealing cylinder and the plug (7). The plug (7) is connected to the cross-shaped pipe (6) by a flange and bolts.

5. The water-based coating production feeding device according to claim 4, characterized in that: The backwash pump (12) is connected to the auxiliary pipe (10) and the inlet pipe (13) by flanges and bolts, and a sealing ring is provided at the connection. The electrically controlled valve (14) is connected to the inlet pipe (13) by flanges and bolts. The electrically controlled valve (14) is a ball valve.

6. The water-based coating production feeding device according to claim 5, characterized in that: When the cross-shaped pipe (6) is inserted into the filter cylinder (8), the connecting pipe (9) continuously supplies water and then drains water through the bottom of the filter cylinder (8) to achieve a forward flushing operation. When the first valve (5) and the plug (7) close the cross-shaped pipe (6), the backwash pump (12) supplies water to achieve a backwashing operation of the cross-shaped pipe (6) and the connecting pipe (9).

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