A reaction kettle for producing polyurethane waterproof coating

Abstract

The utility model relates to the technical field of reaction kettle, especially relates to a reaction kettle for polyurethane waterproof coating production, it includes: reaction kettle body, mixing component, collection tank, bottom plate and exhaust component, reaction kettle body intercommunication feed pipe a, feed pipe a is connected with the connecting pipe, and the connecting pipe periphery is connected with the mounting block, mixing component is connected on the mounting block, mixing component includes mixing box, filter plate, opening, support base, mixing spare and guide material shell, filter plate is connected in the mixing box, and filter plate is inclined to the opening end, support base is connected on the mixing box, and support base connects mixing spare, and guide material shell feed end and opening are connected, and the discharge end is connected with the collection tank, the utility model discloses through mixing spare in mixing box to raw material first mixes and stirs, then transports to the reaction kettle body again, and the reaction kettle body reaches the reaction of polyurethane waterproof coating production and processing, improves polyurethane waterproof coating anti -flow hanging performance and coating solidification speed and solidification degree, improves polyurethane waterproof coating reaction effect.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, and in particular to a reaction vessel for producing polyurethane waterproof coating. Background Technology

[0002] Polyurethane waterproof coating is a single-component polyurethane waterproof coating made from isocyanate-containing prepolymers such as isocyanate and polyether through addition polymerization reaction, combined with catalysts, anhydrous additives, anhydrous fillers, solvents, etc., and processed through mixing and other processes. This type of coating is a reaction-curing (moisture-curing) coating with high strength, high elongation, good water resistance, and strong adaptability to substrate deformation. Polyurethane waterproof coating is a liquid-applied, single-component, environmentally friendly waterproof coating with imported polyurethane prepolymer as the basic component and no additives such as tar and asphalt.

[0003] Chinese Patent CN221860923U discloses a reaction vessel for producing polyurethane waterproof coatings. The vessel includes a reaction vessel body located above a base. A motor is fixedly mounted on the upper surface of the reaction vessel body, and a rotating shaft is fixedly connected to the output end of the motor. A rotating rod is fixedly connected to the lower surface of the rotating shaft. A feed inlet is located on one side of the reaction vessel body, and a gas outlet is located on the other side. A purification chamber is fixedly connected to the outer surface of the gas outlet. In this reaction vessel for producing polyurethane waterproof coatings, harmful gases generated by the reaction vessel body are drawn into the purification chamber by a suction fan. Impurities in the gas are then filtered out by a filter screen, and smaller impurities are filtered out by a filter plate. Simultaneously, harmful substances contained in the inner wall are adsorbed and filtered by an activated carbon plate, thereby achieving a purification effect and meeting the desired purpose.

[0004] In the production of polyurethane waterproof coatings, kaolin, calcium hydride, and talc are added to a reaction vessel. These various raw materials are added according to the production process and mixed using the vessel's stirring structure. However, existing reaction vessels are not suitable for first mixing multiple raw materials before adding them to the vessel for reaction. Consequently, the first raw materials added to the vessel settle at the bottom, resulting in poor dehydration of both the bottom and top layers. This hinders effective mixing with other raw materials, reduces the mixing efficiency, lowers the anti-sagging properties of the polyurethane waterproof coating, reduces the curing speed and degree of curing, diminishes the reaction effect of the polyurethane waterproof coating, and reduces the functionality of the reaction vessel. Utility Model Content

[0005] To address the problems existing in the background technology, a reaction vessel for the production of polyurethane waterproof coatings is proposed.

[0006] This utility model proposes a reaction vessel for producing polyurethane waterproof coating, comprising: a reaction vessel body, a mixing component, a collection box, a bottom plate, and an exhaust component;

[0007] The reactor body is connected to the feed pipe a, the feed pipe a is connected to a connecting pipe, and the connecting pipe is connected to an installation block.

[0008] The mixing assembly is connected to the mounting block; the mixing assembly includes a mixing tank, a filter plate, an opening, a support base, mixing components, and a guide shell;

[0009] The filter plate is connected inside the mixing box and is tilted towards the opening end. The support base is connected to the mixing box and the support base is connected to the mixing component. The feed end of the guide shell is connected to the opening and the discharge end is connected to the collection box.

[0010] The base plate is connected to the bottom of the collection box;

[0011] And the exhaust assembly is connected to the reactor body.

[0012] Preferably, the reactor body is connected to the feed pipe b and the exhaust pipe, the exhaust pipe connection structure is the same as that of the feed pipe a, and the exhaust pipe is connected to the exhaust assembly;

[0013] The discharge end at the bottom of the reactor body is connected to the discharge pipe through valve body a, and the reactor body is connected to a stirring element.

[0014] Preferably, the stirring component includes a heat insulation plate, a motor a, a rotating shaft a, and stirring blades;

[0015] The heat insulation plate is connected to the reactor body. The drive end of the motor a is connected to the rotating shaft a. The rotating shaft a passes through the through hole a and the through hole b and is connected to the inside of the reactor body. The outer side of the rotating shaft a is connected to the stirring blade, which is connected to the inside of the reactor body.

[0016] Through hole a is located on the heat insulation plate, and through hole b is located on the reactor body.

[0017] Preferably, the mixing component includes a motor b, a rotating shaft b, and a mixing blade;

[0018] Motor b is connected to the support base. The drive end of motor b is connected to the rotating shaft b. The rotating shaft b passes through the through hole c and connects to the mixing blade. The mixing blade is connected inside the mixing box, and the through hole c is located on the mixing box.

[0019] Preferably, the lower end of the mixing tank is provided with a conveying port, which is connected to valve body b. The discharge end of valve body b is connected to a connecting pipe for conveying the raw materials in the mixing tank to the reactor body.

[0020] Preferably, the mixing tank is connected to a support rod, the support rod is connected to a mounting bracket, and the mounting bracket is connected to the base plate.

[0021] Preferably, the exhaust assembly includes an exhaust box, a connecting block, a cover plate, and a mounting pipe;

[0022] The exhaust box has an air inlet and an exhaust pipe connected. The interior of the exhaust box is hollow and connected to an activated carbon plate. An open cover is provided on top, and the cover is connected to an installation pipe. The air inlet of the installation pipe passes through the cover and connects to the exhaust box. The air outlet of the installation pipe is connected to a suction fan.

[0023] Compared with the prior art, the present invention has the following beneficial technical effects:

[0024] This invention involves feeding kaolin, dicalcium hydroxide, and talc powder, the raw materials for polyurethane waterproof coating, into a mixing tank according to the production process. The mixing tank first stirs and mixes the raw materials before conveying them to a reaction vessel. The reaction vessel then reacts to process the polyurethane waterproof coating, thereby improving the stirring, mixing, and dehydration effect of the raw materials. This conveniently enhances the anti-sagging properties, curing speed, and degree of curing of the polyurethane waterproof coating, improving the reaction effect. Simultaneously, a filter plate connected to the inner wall of the mixing tank is tilted towards the open end, facilitating the sieving of the kaolin, dicalcium hydroxide, and talc powder raw materials. Raw materials that do not pass sieving automatically fall into a guide shell and are collected in a collection box, simplifying the use of the reaction vessel and further improving the reaction and mixing effect of the polyurethane waterproof coating. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the feed pipe a in this utility model;

[0027] Figure 3 This is a schematic diagram of the stirring component structure in this utility model;

[0028] Figure 4 This is a schematic diagram of the mixing component structure in this utility model.

[0029] Reference numerals in the attached drawings: 1. Reactor body; 101. Feed pipe a; 102. Connecting pipe; 103. Mounting block; 104. Exhaust pipe; 105. Discharge pipe; 106. Valve body a; 107. Heat insulation plate; 108. Motor a; 109. Rotating shaft a; 110. Stirring blade; 2. Mixing assembly; 201. Mixing box; 202. Filter plate; 203. Opening; 204. Support base; 205. Motor b; 206. Rotating shaft b; 207. Mixing blade; 208. Valve body b; 209. Support rod; 210. Guide shell; 3. Collection box; 4. Bottom plate; 5. Exhaust box; 501. Connecting block; 502. Cover plate; 503. Mounting pipe. Detailed Implementation

[0030] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0031] Example 1

[0032] like Figure 1 - Figure 4 As shown, the present invention proposes a reaction vessel for producing polyurethane waterproof coating, comprising: a reaction vessel body 1, a mixing assembly 2, a collection box 3, a bottom plate 4, and an exhaust assembly; the reaction vessel body 1 is connected to a feed pipe a101, the feed pipe a101 is connected to a connecting pipe 102, and the connecting pipe 102 is connected to an mounting block 103; the mixing assembly 2 is connected to the mounting block 103; the mixing assembly 2 includes a mixing tank 201, a filter plate 202, an opening 203, a support base 204, a mixing component, and a guide shell 210; the filter plate 202 is connected inside the mixing tank 201, and the filter plate 202 is inclined towards the opening 203; the support base 204 is connected to the mixing tank 201, and the support base 204 is connected to the mixing component; the inlet end of the guide shell 210 is connected to the opening 203, and the outlet end is connected to the collection box 3; the bottom plate 4 is connected below the collection box 3; the exhaust assembly is connected to the reaction vessel body 1. The collection box 3 is placed on the base plate 4 according to the usage requirements. When the collection box 3 is in use, a weighing device is placed on the base plate 4 to facilitate real-time measurement of the kaolin, calcium hydride, and talc collected by the collection box 3. Then, based on the measurement, kaolin, calcium hydride, and talc are added for further treatment. This facilitates the overall structural coordination of the reaction vessel used for polyurethane waterproof coating production and improves the production and use effect of polyurethane waterproof coating.

[0033] Further explanation: The mixing component includes a motor b205, a rotating shaft b206, and a mixing blade 207. The motor b205 is connected to the support base 204, and the drive end of the motor b205 is connected to the rotating shaft b206. The rotating shaft b206 passes through the through hole c and connects to the mixing blade 207. The mixing blade 207 is connected inside the mixing box 201, and the through hole c is located on the mixing box 201. A conveying port is provided at the lower end of the mixing box 201, and the conveying port is connected to the valve body b208. The discharge end of the valve body b208 is connected to the connecting pipe 102, which is used to convey the raw materials in the mixing box 201 to the reactor body 1. The mixing box 201 is connected to the support rod 209, and the support rod 209 is connected to the mounting frame, which is connected to the base plate 4. Kaolin, calcium hydride, and talc are added to the mixing tank 201. The motor b205 is started, and the drive end of the motor b205 causes the rotating shaft b206 to rotate. The rotating shaft b206 drives the mixing blade 207 to rotate, so that the kaolin, calcium hydride, and talc are mixed and stirred first. Then the valve body b208 is started, and the mixture is transported to the reaction vessel 1 through the connecting pipe 102 and the feed pipe a101 for processing. This facilitates the dehydration effect of kaolin, calcium hydride, and talc, improves the production effect of polyurethane waterproof coating, and improves the quality of use.

[0034] Further explanation: The exhaust assembly includes an exhaust box 5, a connecting block 501, a cover plate 502, and an installation pipe 503. The air inlet of the exhaust box 5 is connected to the exhaust pipe 104. The interior of the exhaust box 5 is hollow and connected to an activated carbon plate. An open opening is provided at the top to connect to the cover plate 502. The cover plate 502 is connected to the installation pipe 503. The air inlet of the installation pipe 503 passes through the cover plate 502 and connects to the exhaust box 5. The air outlet of the installation pipe 503 is connected to a suction fan. When the suction fan is started, the gas inside the reactor body 1 is drawn into the exhaust box 5. The activated carbon plate inside the exhaust box 5 purifies the harmful gases. Then, by opening the cover plate 502, the gas is discharged, which facilitates the improvement of the functionality of the reactor used for the production of polyurethane waterproof coatings.

[0035] Example 2

[0036] like Figure 1 and Figure 2 As shown, this utility model proposes a reaction vessel for producing polyurethane waterproof coatings. Based on the above embodiments, this embodiment also details the specific components of the reaction vessel body 1 and their assembly method.

[0037] Further explanation: The reactor body 1 is connected to the feed pipe b and the exhaust pipe 104. The exhaust pipe 104 has the same connection structure as the feed pipe a101 and is connected to the exhaust assembly. The discharge end at the bottom of the reactor body 1 is connected to the discharge pipe 105 via the valve body a106. The reactor body 1 is also connected to a stirring component. The feed pipe b is used to add part of the raw materials into the reactor body 1, while the other part of the raw materials is added to the mixing assembly 2 for mixing before being transported into the reactor body 1. This facilitates improving the reaction effect in the production of polyurethane waterproof coatings and enhances the overall structural coordination of the reactor used for polyurethane waterproof coating production.

[0038] Further explanation: The stirring components include a heat insulation plate 107, a motor a108, a rotating shaft a109, and a stirring blade 110. The heat insulation plate 107 is connected to the reactor body 1. The drive end of the motor a108 is connected to the rotating shaft a109, which passes through through holes a and b and connects to the interior of the reactor body 1. The stirring blade 110 is connected to the periphery of the rotating shaft a109 and is connected to the interior of the reactor body 1. Through hole a is located on the heat insulation plate 107, and through hole b is located on the reactor body 1. When polyurethane waterproof coating is added to the reactor body 1, the motor a108 is started. The drive end of the motor a108 causes the rotating shaft a109 to rotate, which in turn drives the stirring blade 110. The stirring blade 110 rotates within the reactor body 1, facilitating the mixing of the polyurethane waterproof coating raw materials, improving the production efficiency of the polyurethane waterproof coating, and enhancing its quality.

[0039] The working principle of this utility model is as follows: When using the reaction vessel for producing polyurethane waterproof coatings, firstly, polyether polyol, chlorinated paraffin, dispersant, and defoamer are added to the reaction vessel body 1 through feed pipe b in proportion. The mixture is stirred by a stirrer and heated to 120°C. After reaching 120°C, kaolin, calcium hydride, and talc are added to the mixing tank 201. The filter plate 202 in the mixing tank 201 screens the kaolin, calcium hydride, and talc to prevent the kaolin, calcium hydride, and talc from becoming too large. The raw materials—kaolin, calcium hydride, and talc—enter the reactor body 1 and are first mixed and stirred by the mixing components in the mixing tank 201. Then, the valve body b208 is activated, and in conjunction with the connecting pipe 102 and the feed pipe a101, the kaolin, calcium hydride, and talc are conveyed into the reactor body 1. Raw materials blocked by the sieve are collected in the collection box 3 through the opening 203 and the guide shell 210. The collection box 3 is placed on the bottom plate 4. Before use, a weighing device is placed on the bottom plate 4, and the weighing device is used to weigh the collection box. The raw materials collected in section 3 are measured and used in real time. Based on the measured values, the corresponding kaolin, calcium hydride, and talc are added to the mixing tank 201. The sieving and conveying of raw materials are repeated to ensure that the kaolin, calcium hydride, and talc are added to the reaction vessel 1 in proportion. Vacuum dehydration (negative pressure 0.085~0.1MPa) is carried out for 4 hours. The reaction vessel is then cooled to 82℃. Then, the weighed TDI is added through the feed pipe b. The reaction is carried out for 2 hours. Then, a quantitative catalyst and solvent oil are added through the feed pipe b and reacted at a constant temperature of 82℃ for 45 minutes. Then, a quantitative latent curing agent and solvent oil are added through the feed pipe b and reacted at a constant temperature for 4 minutes. Finally, a quantitative catalyst, benzoic acid, and solvent oil are added through the feed pipe b. The temperature is lowered to 65℃. Finally, the polyurethane waterproof coating is discharged from the discharge pipe 105 through the valve body a106. By optimizing the curing process, the curing speed and degree of curing of the coating are improved. The effects of different anti-sagging agents are compared to ensure that the coating does not sag under various construction conditions.

[0040] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A reaction vessel for producing polyurethane waterproof coatings, characterized in that, include: Reactor body (1); The reactor body (1) is connected to the feed pipe a (101), the feed pipe a (101) is connected to the connecting pipe (102), and the connecting pipe (102) is connected to the mounting block (103) on the outside; The mixing assembly (2) is connected to the mounting block (103); the mixing assembly (2) includes a mixing box (201), a filter plate (202), an opening (203), a support base (204), a mixing component, and a guide shell (210); The filter plate (202) is connected inside the mixing box (201), and the filter plate (202) is inclined towards the opening (203). The support base (204) is connected to the mixing box (201), and the support base (204) is connected to the mixing component. The feed end of the guide shell (210) is connected to the opening (203), and the discharge end is connected to the collection box (3). The base plate (4) is connected to the bottom of the collection box (3); And an exhaust assembly, connected to the reactor body (1).

2. The reaction vessel for producing polyurethane waterproof coating according to claim 1, characterized in that, The reactor body (1) is connected to the feed pipe b and the exhaust pipe (104). The exhaust pipe (104) has the same connection structure as the feed pipe a (101). The exhaust pipe (104) is connected to the exhaust assembly. The discharge end of the reactor body (1) is connected to the discharge pipe (105) through the valve body a (106), and the reactor body (1) is connected to a stirring element.

3. The reaction vessel for producing polyurethane waterproof coating according to claim 2, characterized in that, The stirring components include a heat insulation plate (107), a motor a (108), a rotating shaft a (109), and stirring blades (110); The heat insulation plate (107) is connected to the reactor body (1), the drive end of the motor a (108) is connected to the rotating shaft a (109), the rotating shaft a (109) passes through the through hole a and the through hole b and is connected to the inside of the reactor body (1), the outer side of the rotating shaft a (109) is connected to the stirring blade (110), and the stirring blade (110) is connected to the inside of the reactor body (1); Through hole a is provided on the heat insulation plate (107), and through hole b is provided on the reactor body (1).

4. The reaction vessel for producing polyurethane waterproof coating according to claim 1, characterized in that, The mixing component includes a motor b (205), a rotating shaft b (206), and a mixing blade (207); Motor b (205) is connected to support base (204). The drive end of motor b (205) is connected to shaft b (206). Shaft b (206) passes through through hole c and connects to mixing blade (207). Mixing blade (207) is connected inside mixing box (201), and through hole c is set on mixing box (201).

5. The reaction vessel for producing polyurethane waterproof coating according to claim 4, characterized in that, The mixing tank (201) is provided with a conveying port at the lower end. The conveying port is connected to the valve body b (208). The discharge end of the valve body b (208) is connected to the connecting pipe (102) to convey the raw materials in the mixing tank (201) to the reactor body (1).

6. The reaction vessel for producing polyurethane waterproof coating according to claim 5, characterized in that, The mixing box (201) is connected to the support rod (209), the support rod (209) is connected to the mounting bracket, and the mounting bracket is connected to the base plate (4).

7. The reaction vessel for producing polyurethane waterproof coating according to claim 2, characterized in that, The exhaust assembly includes an exhaust box (5), a connecting block (501), a cover plate (502), and an installation pipe (503); The air inlet of the exhaust box (5) is connected to the exhaust pipe (104). The interior of the exhaust box (5) is hollow and connected to an activated carbon plate. An open cover plate (502) is provided on the top. The cover plate (502) is connected to the installation pipe (503). The air inlet of the installation pipe (503) passes through the cover plate (502) and is connected to the exhaust box (5). The air outlet of the installation pipe (503) is connected to the suction fan.

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