Polyurethane waterproof coating processing equipment and preparation method

Abstract

The invention provides polyurethane waterproof paint processing equipment and a preparation method, and relates to the technical field of paint processing.The polyurethane waterproof paint processing equipment comprises a preparation kettle, a material storage mechanism facilitating preparation and mixing is arranged in the preparation kettle, a feeding mechanism facilitating feeding is arranged in the preparation kettle, and the material storage mechanism comprises a material storage barrel and a one-way valve plate; the feeding mechanism comprises a motor and a rubber pressing plate, the storage barrel is fixedly installed on the inner side wall of the preparation kettle, the one-way valve plate is located on the inner side wall of the storage barrel, and the motor is fixedly installed at the upper end of the preparation kettle. According to the device, the storage barrel is matched with the discharge ports, so that when the additive is mixed with the coating in the preparation kettle, the additive can flow out from the plurality of uniformly distributed discharge ports, and compared with the traditional single-opening addition, the feeding uniformity can be remarkably improved, the additive enters the coating in a dispersed manner and is prevented from being concentrated in a certain area, and the production efficiency is improved. Severe reaction caused by overhigh local additive concentration is prevented.

Description

Technical Field

[0001] The present invention belongs to the technical field of coating processing, and more specifically, relates to a polyurethane waterproof coating processing device and a preparation method. Background Art

[0002] Polyurethane waterproof coating is a liquid waterproof coating composed primarily of polyurethane resin, supplemented by a curing agent, additives, fillers, and other ingredients. It is applied to a substrate and chemically solidifies to form a tough, highly elastic, and seamless waterproof membrane, providing waterproofing, moisture resistance, and corrosion resistance.

[0003] The Chinese patent publication number is: CN108404815A. In this invention, when steam flows through the mosquito coil's disc-shaped circulation tube, it can heat the inside of the storage tank, thereby effectively drying the powder. When the moisture content is low, the sealing plate can be pulled out to allow the water vapor in the heating box to dissipate into the powder storage tank, thereby moistening the powder.

[0004] Existing polyurethane waterproof coatings have the following disadvantages during processing:

[0005] 1. When processing existing polyurethane waterproof coatings, additives are added from the top. When adding additives locally, the additives will be concentrated in one area, resulting in excessively high local concentrations and uneven mixing, affecting the uniformity of product performance, and increasing mixing time, resulting in low production efficiency.

[0006] 2. When adding additives to existing polyurethane waterproof coatings, ordinary pump suction feeding method is used, which will cause additive residues in the barrel. The residual additives will cause deviations in the actual input ratio, making the performance of the mixed coating unstable. The residual additives will also need to be cleaned manually, which is manpower-consuming. Summary of the Invention

[0007] In order to solve the above technical problems, the present invention provides a polyurethane waterproof coating processing equipment and preparation method to solve the above problems.

[0008] A polyurethane waterproof coating processing equipment includes a preparation kettle, a material storage mechanism for facilitating preparation and mixing is provided in the preparation kettle, a material feeding mechanism for facilitating feeding is provided in the preparation kettle, the material storage mechanism includes a material storage barrel and a one-way valve plate, the material feeding mechanism includes a motor and a rubber pressure plate, the material storage barrel is fixedly mounted on the inner side wall of the preparation kettle, the one-way valve plate is located on the inner side wall of the material storage barrel, the motor is fixedly mounted on the upper end of the preparation kettle, a rotating rod is fixedly mounted on the output end of the motor, the rubber pressure plate is slidably mounted on the inner side wall of the material storage barrel, a first feeding pipe is fixedly mounted on the circumferential end of the preparation kettle, and the upper end of the preparation kettle is fixedly mounted A second feeding pipe is fixedly installed, a sealed bearing is fixedly installed at the lower end of the preparation kettle, a support frame is fixedly installed at the circumferential end of the preparation kettle, at least two discharge ports are penetrated through the circumferential end of the inner wall of the storage barrel, and there are multiple one-way valve plates, each of which is slidably installed on the inner side wall of the discharge port, and ear plates are fixedly installed on both side ends of each one-way valve plate, and a spring is fixedly installed between each ear plate and the storage barrel, a plurality of stirring rods are fixedly installed on the circumferential end of the rotating rod, and a threaded rod is fixedly installed on the lower end of the rotating rod, and the threaded rod is penetrated and installed on the inner side wall of the sealed bearing.

[0009] Preferably, a pull rod is fixedly mounted on the lower end of the rubber pressing plate, and the pull rod is slidably mounted on the side ends of the material storage barrel and the preparation kettle.

[0010] Preferably, a threaded ring is fixedly mounted on the pull rod, and the threaded ring 52 is threadably mounted on the circumferential end of the threaded rod 43 .

[0011] A method for preparing a polyurethane waterproof coating comprises the following steps:

[0012] S1: When the user needs to mix the additive and the coating, the coating and the additive can be put into the preparation kettle and the storage barrel respectively;

[0013] S2: The user can start the motor, which drives the stirring rod to rotate through the rotating rod to mix the coating in the preparation kettle;

[0014] S3: The rotation of the threaded rod will drive the pull rod to move downward through the threaded ring. The downward movement of the pull rod will drive the rubber pressure plate to move downward. The downward movement of the rubber pressure plate in the storage barrel will squeeze the additive in the storage barrel to flow from the discharge port into the preparation kettle and mix with the coating;

[0015] S4: The thrust of the additive at the storage barrel will push the one-way valve plate out of the discharge port. Since the one-way valve plate is conical, the storage barrel will be opened when the one-way valve plate moves, thereby realizing the addition of additives.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the present invention, by cooperating with a storage barrel and a discharge port, when the additives are mixed with the coating in the preparation kettle, the additives can flow out from multiple evenly distributed discharge ports. Compared with the traditional single opening addition, the feeding uniformity can be significantly improved. The additives enter the coating in a dispersed manner to avoid being concentrated in a certain area, effectively preventing the local additive concentration from being too high and causing a violent reaction, and ensuring that the coating and the additives are gradually and stably contacted and mixed in the entire inner cylinder space, thereby obtaining a waterproof coating product with uniform composition and stable performance.

[0018] In the present invention, a rotating rod is provided to drive the threaded rod to rotate, so that the rubber pressure plate moves downward. By controlling the rotation rate of the rotating rod, not only the stirring intensity and mixing effect of the coating can be adjusted, but also the speed and amount of the rubber pressure plate extruding the additive can be changed synchronously. The rotating rod speed can be flexibly set according to the mixing requirements of additives and coatings with different characteristics. When rapid and large-scale mixing is required, the speed is increased to make the stirring more intense while accelerating the extrusion and addition of the additive; when gentle and slow mixing is required, the speed is reduced to reduce the amount of additive added, thereby achieving a precise match between the feeding rate and the degree of stirring and mixing, and ensuring that the additive and the coating are fully integrated under optimal conditions.

[0019] In the present invention, a rubber pressure plate is provided to move downward to squeeze the paint in the storage barrel for addition. Its elastic squeezing action can form a stable thrust on the additive, thereby quantitatively controlling the rate at which the additive is sprayed out of the discharge port, avoiding the problem of uncontrolled reaction caused by excessive addition due to uncontrollable flow rate in traditional gravity-type addition. The discharge port fits tightly with the inner wall of the storage barrel to form a piston movement. During the extrusion process of the rubber pressure plate, the additive can be completely pushed into the storage barrel for spraying, reducing the residue in the outer cylinder.

[0020] In the present invention, a one-way valve plate is provided on the inner side wall of the discharge port, and a one-way flow channel is formed on the inner side wall of the discharge port, which can effectively prevent the backflow of additives, and prevent the additives that have flowed into the preparation kettle and mixed with the coating from returning to the storage barrel due to factors such as pressure fluctuations caused by stirring and fluid inertia caused by equipment start-up and shutdown, thereby ensuring that the addition process is irreversible, guaranteeing the accuracy of the mixing ratio, and ensuring the accuracy of additive addition, thereby stabilizing the performance of the finished product of the polyurethane waterproof coating.

[0021] In the present invention, a one-way valve plate and a spring are arranged in coordination, and the opening and releasing of the one-way valve plate are completed with the cooperation of the spring. There is no need for frequent manual inspection, adjustment or manual control of the one-way valve plate, thereby realizing the automation and intelligence of the additive addition process, reducing the complexity of operation, and reducing the risk of errors caused by manual intervention. At the same time, it also makes the equipment operation smoother and more efficient, and improves the production efficiency of polyurethane waterproof coatings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a structural schematic diagram of the preparation kettle of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the motor of the present invention;

[0024] Figure 3 It is a schematic cross-sectional structure diagram of the preparation kettle of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the pull rod of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the storage barrel of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the one-way valve plate of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the one-way valve plate of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the rotating rod of the present invention.

[0030] In the figure, the correspondence between the component names and the drawing numbers is: 1. Preparation kettle; 11. First feeding pipe; 12. Second feeding pipe; 13. Support frame; 14. Sealing bearing; 2. Storage barrel; 21. Discharge port; 3. One-way valve plate; 31. Ear plate; 32. Spring; 4. Motor; 41. Rotating rod; 42. Stirring rod; 43. Threaded rod; 5. Rubber pressure plate; 51. Pull rod; 52. Threaded ring. DETAILED DESCRIPTION

[0031] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0032] See also Figures 1-8The present invention provides a polyurethane waterproof coating processing device, including a preparation kettle 1, a material storage mechanism for facilitating preparation and mixing is provided in the preparation kettle 1, a material feeding mechanism for facilitating feeding is provided in the preparation kettle 1, the material storage mechanism includes a material storage barrel 2 and a one-way valve plate 3, and the feeding mechanism includes a motor 4 and a rubber pressing plate 5. The processing of polyurethane waterproof coating involves a complex process with multiple steps. In the production of polyurethane waterproof coating, the mixing of coating and additives can improve the performance, workability and final waterproof effect of the coating. By adding different catalysts, different coating effects can be improved. For example, organic tin and amines can control the reaction rate of isocyanate and polyol, calcium carbonate or talc can improve the compressive strength and wear resistance of the coating, and the addition of phthalates can reduce the brittleness of the coating. When mixing the coating and additives, the coating can be put into the preparation kettle 1 through the second feeding pipe 12, and the additives of the corresponding proportion can be added to the storage barrel 2 through the first feeding pipe 11. The motor 4 is started to drive the stirring rod 42 to rotate and stir the coating. At the same time, the additives in the storage barrel 2 will gradually enter the preparation kettle 1, thereby achieving mixing of the coating and the additives;

[0033] The storage barrel 2 is fixedly mounted on the inner wall of the preparation kettle 1, the one-way valve plate 3 is located on the inner wall of the storage barrel 2, the motor 4 is fixedly mounted on the upper end of the preparation kettle 1, the output end of the motor 4 is fixedly mounted with a rotating rod 41, and the rubber pressure plate 5 is slidably mounted on the inner wall of the storage barrel 2. The circumferential end of the preparation kettle 1 is fixedly mounted with a first feeding pipe 11, the upper end of the preparation kettle 1 is fixedly mounted with a second feeding pipe 12, the lower end of the preparation kettle 1 is fixedly mounted with a sealing bearing 14, and the circumferential end of the preparation kettle 1 is fixedly mounted with a support frame 13. At least two discharge ports 21 are opened through the circumferential end of the inner wall of the storage barrel 2, and the number of the one-way valve plates 3 is multiple, and each one-way valve plate 3 is slidably mounted on the inner wall of the discharge port 21, and the two side ends of each one-way valve plate 3 are fixedly mounted It is equipped with ear plates 31, and a spring 32 is fixedly installed between each ear plate 31 and the storage barrel 2. When the additive in the storage barrel 2 is squeezed by the rubber pressure plate 5, it will be sprayed out from the storage barrel 2. A one-way valve plate 3 is set at the storage barrel 2. The thrust of the additive at the storage barrel 2 will push the one-way valve plate 3 to leave the discharge port 21. Because the one-way valve plate 3 is conical, the storage barrel 2 will be opened when the one-way valve plate 3 moves. At this time, the spring 32 is stretched, and the spraying and feeding of the additive can be achieved. When the rubber pressure plate 5 stops moving, its squeezing force no longer exists. At this time, no more material is added at the discharge port 21, and the spring 32 will rebound to drive the one-way valve plate 3 to move and reset, thereby blocking the storage barrel 2, forming an automatic one-way discharge at the storage barrel 2 to avoid the backflow of paint.

[0034] A plurality of stirring rods 42 are fixedly mounted on the circumferential end of the rotating rod 41. When the user needs to mix the additive and the paint, the paint and the additive can be respectively put into the preparation kettle 1 and the storage barrel 2. After the addition is completed, the user can set the speed of the motor 4 according to the type of additive, so that the rotation speed of the stirring rod 42 is adapted to the mixing rate requirements of the paint and different additives. After the setting is completed, the user can start the motor 4. The motor 4 starts to drive the stirring rod 42 to rotate through the rotating rod 41 to mix the paint in the preparation kettle 1.

[0035] A threaded rod 43 is fixedly installed on the lower end of the rotating rod 41, and the threaded rod 43 is installed through the inner wall of the sealed bearing 14. A pull rod 51 is fixedly installed on the lower end of the rubber pressure plate 5, and the pull rod 51 is slidably installed on the side ends of the storage barrel 2 and the preparation kettle 1. A threaded ring 52 is fixedly installed on the pull rod 51, and the threaded ring 52 is threadedly rotatably installed on the circumferential end of the threaded rod 43. When the rotating rod 41 rotates, the threaded rod 43 will be driven to rotate synchronously. The rotation of the threaded rod 43 will drive the pull rod 51 to move downward through the threaded ring 52. The downward movement of the pull rod 51 will drive the rubber pressure plate 5 to move downward. The downward movement of the rubber pressure plate 5 in the storage barrel 2 will squeeze the additives in the storage barrel 2 into the preparation kettle 1 from the discharge port 21 and mix with the coating.

[0036] Working principle:

[0037] The first step is that the processing of polyurethane waterproof coating involves a complex process with multiple steps. In the production of polyurethane waterproof coating, the mixing of coating and additives can improve the performance, workability and final waterproof effect of the coating. Different effects of the coating can be improved by adding different catalysts. For example, organotin and amines can control the reaction rate of isocyanate and polyol, calcium carbonate or talc can improve the compressive strength and wear resistance of the coating, and the addition of phthalates can reduce the brittleness of the coating. When mixing the coating and additives, the coating can be put into the preparation kettle 1 through the second feeding pipe 12, and the additives of the corresponding proportion can be added to the storage barrel 2 through the first feeding pipe 11. The coating is stirred by driving the stirring rod 42 to rotate by starting the motor 4. At the same time, the additives in the storage barrel 2 will gradually enter the preparation kettle 1, thereby achieving mixing of the coating and the additives;

[0038] In the second step, when the user needs to mix the additives and the paint, the paint and the additives can be put into the preparation kettle 1 and the storage barrel 2 respectively. After the addition is completed, the user can set the speed of the motor 4 according to the type of additive, so that the rotation speed of the stirring rod 42 is adapted to the mixing rate of the paint and different additives. After the setting is completed, the user can start the motor 4. The motor 4 starts and drives the stirring rod 42 to rotate through the rotating rod 41 to mix the paint in the preparation kettle 1. When the rotating rod 41 rotates, it drives the threaded rod 43 to rotate synchronously. The rotation of the threaded rod 43 drives the pull rod 51 to move downward through the threaded ring 52. The downward movement of the pull rod 51 drives the rubber pressure plate 5 to move downward. The downward movement of the rubber pressure plate 5 in the storage barrel 2 will squeeze the additive in the storage barrel 2 to flow from the discharge port 21 into the preparation kettle 1 and mix with the paint;

[0039] By providing a storage barrel 2 and a discharge port 21 in coordination, the device can make the additives flow out from multiple evenly distributed discharge ports 21 when mixing the additives with the coating in the preparation kettle 1. Compared with the traditional single opening addition, the uniformity of feeding can be significantly improved. The additives enter the coating in a dispersed manner, avoiding concentration in a certain area, effectively preventing excessive concentration of local additives from causing violent reactions, and ensuring that the coating and the additives are gradually and stably contacted and mixed in the entire inner barrel space, thereby obtaining a waterproof coating product with uniform composition and stable performance.

[0040] This device is provided with a rotating rod 41 to drive the threaded rod 43 to rotate, so that the rubber pressing plate 5 moves downward. By controlling the rotation rate of the rotating rod 41, not only the stirring intensity and mixing effect of the paint can be adjusted, but also the speed and amount of the rubber pressing plate 5 squeezing the additive can be changed synchronously. The rotation speed of the rotating rod 41 can be flexibly set according to the mixing requirements of additives and paints with different characteristics. When fast and large-scale mixing is required, the rotation speed is increased to make the stirring more intense and accelerate the extrusion and addition of the additive; when gentle and slow mixing is required, the rotation speed is reduced to reduce the amount of additive added, thereby achieving a precise match between the feeding rate and the stirring and mixing degree, ensuring that the additive and the paint are fully integrated under optimal conditions;

[0041] This device adds paint by setting a rubber pressure plate 5 that moves downward to squeeze the paint in the storage barrel 2. Its elastic squeezing action can form a stable thrust on the additive, thereby quantitatively controlling the rate at which the additive is sprayed out of the discharge port 21, avoiding the problem of uncontrolled reaction caused by excessive addition due to uncontrollable flow rate in traditional gravity-type addition. The discharge port 21 fits tightly with the inner wall of the storage barrel 2 to form a piston movement. During the squeezing process of the rubber pressure plate 5, the additive can be completely pushed into the storage barrel 2 for spraying, reducing the residue in the outer cylinder.

[0042] In the third step, when the additive in the storage barrel 2 is squeezed by the rubber pressure plate 5, it will be sprayed out from the storage barrel 2. A one-way valve plate 3 is provided at the storage barrel 2. The thrust of the additive at the storage barrel 2 will push the one-way valve plate 3 to leave the discharge port 21. Because the one-way valve plate 3 is conical, the storage barrel 2 will be opened when the one-way valve plate 3 moves. At this time, the spring 32 is stretched, and the spraying and feeding of the additive can be achieved. When the rubber pressure plate 5 stops moving, its squeezing force no longer exists. At this time, no more material is added at the discharge port 21. The spring 32 will rebound and drive the one-way valve plate 3 to move and reset, thereby blocking the storage barrel 2, forming an automatic one-way discharge at the storage barrel 2 to avoid the backflow of paint.

[0043] The device is provided with a one-way valve plate 3 on the inner side wall of the discharge port 21. The one-way flow channel formed on the inner side wall of the discharge port 21 can effectively prevent the backflow of additives, and prevent the additives that have flowed into the preparation kettle 1 and mixed with the coating from returning to the storage barrel 2 due to factors such as pressure fluctuations caused by stirring and fluid inertia caused by equipment start-up and shutdown. This ensures that the addition process is irreversible, guarantees the accuracy of the mixing ratio, ensures the accuracy of the additive addition, and thus stabilizes the performance of the finished product of the polyurethane waterproof coating.

[0044] This device is equipped with a one-way valve plate 3 and a spring 32. The opening and release of the one-way valve plate 3 are completed with the cooperation of the spring 32. There is no need for frequent manual inspection, adjustment or manual control of the one-way valve plate 3, which realizes the automation and intelligence of the additive addition process, reduces the complexity of operation, reduces the risk of errors caused by manual intervention, and also makes the equipment operation smoother and more efficient, thereby improving the production efficiency of polyurethane waterproof coatings.

[0045] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A polyurethane waterproof coating processing equipment, comprising a preparation kettle (1), characterized in that: The preparation kettle (1) is provided with a material storage mechanism for facilitating preparation and mixing, and the preparation kettle (1) is provided with a material feeding mechanism for facilitating material feeding; The material storage mechanism comprises a material storage barrel (2) and a one-way valve plate (3), and the feeding mechanism comprises a motor (4) and a rubber pressure plate (5). The material storage barrel (2) is fixedly mounted on the inner side wall of the preparation kettle (1), the one-way valve plate (3) is located on the inner side wall of the material storage barrel (2), the motor (4) is fixedly mounted on the upper end of the preparation kettle (1), a rotating rod (41) is fixedly mounted on the output end of the motor (4), and the rubber pressure plate (5) is slidably mounted on the inner side wall of the material storage barrel (2).

2. A polyurethane waterproof coating processing equipment as claimed in claim 1, characterized in that: A first feeding pipe (11) is fixedly installed at the circumferential end of the preparation kettle (1), and a second feeding pipe (12) is fixedly installed at the upper end of the preparation kettle (1).

3. A polyurethane waterproof coating processing equipment as claimed in claim 2, characterized in that: A sealed bearing (14) is fixedly mounted on the lower end of the preparation kettle (1), and a support frame (13) is fixedly mounted on the circumferential end of the preparation kettle (1).

4. A polyurethane waterproof coating processing equipment as claimed in claim 3, characterized in that: At least two discharge ports (21) are provided through the circumferential end portion of the inner side wall of the storage barrel (2), and the number of the one-way valve plates (3) is multiple.

5. The polyurethane waterproof coating processing equipment according to claim 4, characterized in that: Each one-way valve plate (3) is slidably mounted on the inner side wall of the discharge port (21), and both side ends of each one-way valve plate (3) are fixedly mounted with ear plates (31), and a spring (32) is fixedly mounted between each ear plate (31) and the storage barrel (2).

6. The polyurethane waterproof coating processing equipment according to claim 5, characterized in that: A plurality of stirring rods (42) are fixedly mounted on the circumferential end of the rotating rod (41), and a threaded rod (43) is fixedly mounted on the lower end of the rotating rod (41).

7. The polyurethane waterproof coating processing equipment according to claim 6, characterized in that: The threaded rod (43) is installed through the inner side wall of the sealed bearing (14).

8. The polyurethane waterproof coating processing equipment according to claim 7, characterized in that: A pull rod (51) is fixedly mounted on the lower end of the rubber pressing plate (5), and the pull rod (51) is slidably mounted on the side ends of the material storage barrel (2) and the preparation kettle (1).

9. The polyurethane waterproof coating processing equipment according to claim 8, characterized in that: A threaded ring (52) is fixedly mounted on the pull rod (51), and the threaded ring (52) is threadably mounted on the circumferential end of the threaded rod (43).

10. A method for preparing a polyurethane waterproof coating, characterized in that: Here are the steps: S1: When the user needs to mix the additive and the coating, the coating and the additive can be put into the preparation kettle (1) and the storage barrel (2) respectively; S2: The user can start the motor (4), and the motor (4) drives the stirring rod (42) to rotate through the rotating rod (41) to mix the coating in the preparation kettle (1); S3: The threaded rod (43) rotates to drive the pull rod (51) to move downward through the threaded ring (52), and the downward movement of the pull rod (51) drives the rubber pressure plate (5) to move downward. The downward movement of the rubber pressure plate (5) in the storage barrel (2) squeezes the additive in the storage barrel (2) to flow into the preparation kettle (1) from the discharge port (21) to mix with the coating; S4: The thrust of the additive in the storage barrel (2) pushes the one-way valve plate (3) to leave the discharge port (21). Since the one-way valve plate (3) is conical, the storage barrel (2) will be opened when the one-way valve plate (3) moves, thereby enabling the addition of the additive.

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