Mixing equipment and preparation method of breathable waterproof coating

Abstract

The invention provides mixing equipment and a preparation method of breathable waterproof paint.The mixing equipment comprises a tank body, a dispersing disc, a driving mechanism and a lifting mechanism, the tank body is installed on a support, the driving mechanism is installed at the top of the tank body and extends into the tank body, the dispersing disc is installed at the end, extending into the tank body, of the driving mechanism, and the lifting mechanism is installed on the dispersing disc; the dispersing disc rotates along with the driving mechanism to mix raw materials of the waterproof coating, the lifting mechanism is installed on the driving mechanism and arranged in the driving mechanism in a penetrating mode, and the lifting mechanism drives the dispersing disc to stay at any height position in the tank body. According to the mixing equipment for the breathable waterproof coating and the preparation method, the lifting mechanism is arranged, so that multi-position stirring of the dispersion disc in the tank body is realized, the mixing efficiency and the mixing uniformity are effectively improved, and the problem of non-uniform mixing of existing equipment is solved; and spline connection and sealing element design are adopted, so that the transmission structure and the sealing performance are optimized, and the stability and the reliability of equipment under complex working conditions are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof coating production, and in particular to a mixing device for air-permeable waterproof coating. At the same time, the present invention also relates to a preparation method for waterproof coating. Background Art

[0002] In the field of building waterproofing, the performance of waterproof coatings is crucial to the waterproofing effect and service life of buildings. With the continuous development of the construction industry, higher requirements are placed on the quality and performance of waterproof coatings. In order to meet market demand, various production technologies for waterproof coatings continue to emerge. Among them, mixing equipment is a key link in the production process, and its performance directly affects the uniformity and quality stability of the coating.

[0003] At present, the common waterproof coating mixing equipment on the market mainly adopts a fixed stirring device to mix the coating raw materials through a single stirring method. Although this equipment has a simple structure, it has obvious limitations in the mixing process. For example, the fixed stirring device cannot stir the raw materials in layers according to the different positions in the tank, resulting in uneven mixing. Especially when dealing with waterproof coatings with multiple components, the mixing efficiency is low and it is difficult to meet the production requirements of high-quality coatings.

[0004] In addition, existing waterproof coatings mainly focus on waterproof function and often ignore air permeability. During use, water vapor inside the substrate cannot escape smoothly, resulting in bubbles and bulging in the coating. Existing breathable waterproof coatings often have limited toughness and are prone to breeding microorganisms, causing the waterproof coating to be destroyed. At the same time, since breathable waterproof coatings have more raw materials, they are prone to uneven mixing or reduced production efficiency during the mixing process, affecting the flexibility and adaptability of the coating and reducing the quality of the coating. Summary of the invention

[0005] In view of this, one of the purposes of the present invention is to provide a mixing device for breathable waterproof coatings to solve the problems of low mixing efficiency and uneven mixing of existing mixing devices.

[0006] In order to achieve one of the above purposes, the present invention provides a mixing device for a breathable waterproof coating, which adopts the following technical solution: A mixing device for a breathable waterproof coating comprises a tank body, a dispersion disk, a driving mechanism and a lifting mechanism; the tank body is mounted on a bracket, the driving mechanism is mounted on the top of the tank body and extends into the tank body, the dispersion disk is mounted on one end of the driving mechanism extending into the tank body, and the dispersion disk rotates with the driving mechanism to mix the raw materials of the waterproof coating; the lifting mechanism is mounted on the driving mechanism and penetrates into the driving mechanism, and the lifting mechanism drives the dispersion disk to stay or rise and fall at any height position in the tank body.

[0007] By adopting the above technical solution, multi-position stirring of the dispersion disk is achieved, the mixing efficiency and mixing uniformity are improved, and at the same time, through the setting of the lifting mechanism, it can better adapt to the stirring needs of different heights and ensure high-quality mixing of the coating.

[0008] Furthermore, the driving mechanism includes a connecting frame fixedly arranged on the tank body, a driven rod rotatably arranged in the connecting frame and extending into the tank body, a first motor fixedly arranged on the top of the connecting frame to drive the driven rod to rotate, the dispersion disk is fixedly arranged at the bottom of the driven rod, and a first flange connected to the tank body is arranged at the bottom of the connecting frame.

[0009] By adopting the above technical solution, stable installation and efficient transmission of the driving mechanism are achieved, stable rotation of the dispersion disk is ensured, and the reliability of the mixing process is improved.

[0010] Furthermore, a transmission box is fixedly arranged on the top of the connecting frame, the first motor drives the transmission box to rotate, a driving sleeve extending into the tank body is fixedly arranged on the output end of the transmission box, and the driven rod is passed through the driving sleeve and rotates with the driving sleeve.

[0011] By adopting the above technical solution, the transmission structure is further optimized, the transmission efficiency and stability are improved, and the energy loss is reduced.

[0012] Furthermore, the driving sleeve and the driven rod are connected by a spline, a key block is provided at the lower part of the driving sleeve, a key slot is provided at the upper part of the driven rod, and the key block is embedded in the key slot and slides up and down.

[0013] By adopting the above technical solution, the rotation and lifting functions of the driven rod are combined, thereby improving the flexibility and adaptability of the equipment.

[0014] Furthermore, a first seal is provided between the driving sleeve and the connecting frame, an auxiliary cylinder extending into the tank body is provided at the bottom of the first seal, the driving sleeve and the driven rod are located in the auxiliary cylinder, the bottom of the driven rod passes through the auxiliary cylinder and is located in the tank body, and a second seal is provided between the driven rod and the auxiliary cylinder.

[0015] By adopting the above technical solution, the sealing performance of the equipment is effectively improved, coating leakage is prevented, and at the same time the transmission components are protected, thereby extending the service life of the equipment.

[0016] Furthermore, the first sealing member comprises an expansion sealing pad arranged between the driving sleeve and the connecting frame, and the expansion sealing pad is clamped by two pressure rings and fixedly arranged on the connecting frame.

[0017] By adopting the above technical solution, the sealing effect is further enhanced to ensure the sealing performance of the equipment under high pressure and complex working conditions.

[0018] Furthermore, the second sealing member comprises a special-shaped sealing ring disposed between the driven rod and the auxiliary tube, and the special-shaped sealing ring abuts against the bottom of the auxiliary tube through a second flange.

[0019] By adopting the above technical solution, the sealing structure is further optimized to ensure that the driven rod maintains good sealing during the rotation and lifting process.

[0020] Furthermore, the lifting mechanism includes a second motor fixed on the transmission box and a screw rod passed through the driving sleeve and rotated following the second motor. The driven rod is provided with a circular hole for the screw rod to pass through. The inner wall of the circular hole is provided with a protrusion that engages with the screw rod. The second motor is connected to the screw rod through an electromagnetic clutch.

[0021] By adopting the above technical solution, accurate lifting and lowering control of the dispersion disk is achieved, and the automation degree and mixing quality of the mixing process are improved.

[0022] Compared with the prior art, one of the purposes of the present invention has the following beneficial effects: The mixing equipment of a breathable waterproof coating described in the present invention realizes multi-position stirring of a dispersion disk in a tank body by arranging a lifting mechanism, effectively improves mixing efficiency and mixing uniformity, and solves the problem of uneven mixing in existing equipment; adopts spline connection and sealing design to optimize the transmission structure and sealing performance, and ensures the stability and reliability of the equipment under complex working conditions; through the combination of a transmission box and an electromagnetic clutch, precise lifting and lowering control of the dispersion disk is realized, and the degree of automation of the mixing process is improved; the overall structure of the equipment is compact and easy to operate, so it is suitable for large-scale industrial production and reduces production costs; the flexibility and adaptability of the coating are improved, and the service life of the coating is extended.

[0023] The second object of the present invention is to provide a method for preparing a breathable waterproof coating to solve the problems of uneven mixing, low production efficiency and insufficient coating performance in the existing preparation methods.

[0024] In order to achieve the second purpose above, the present invention provides a method for preparing a breathable waterproof coating, which adopts the following technical scheme: A method for preparing a breathable waterproof coating comprises the following steps: S1. Add acrylic emulsion or polyurethane emulsion, air permeability additive, waterproof additive, filler, thickener, dispersant, defoamer, preservative and water into the tank of the mixing equipment in sequence; S2, start the first motor, drive the driven rod and the dispersion disk to rotate through the transmission box and the driving sleeve, and perform preliminary mixing of the raw materials; S3, start the electromagnetic clutch to stop the screw from rotating. The driving sleeve drives the driven rod to rotate while the driven rod moves up and down along the axial direction of the screw, so that the dispersion plate is moved up and down at different heights in the tank for mixing; S4, turn off the first motor, start the second motor, drive the screw to rotate, and the screw drives the dispersion plate to stay in the middle of the tank; S5, turn off the second motor and the electromagnetic clutch, start the first motor, increase the speed of the dispersion disk, and perform fine mixing; S6. After the mixing is completed, all equipment is turned off and the prepared breathable waterproof coating is discharged through the discharge port at the bottom of the tank.

[0025] By adopting the above technical scheme, layered mixing and fine mixing of coating raw materials are achieved, mixing efficiency and mixing uniformity are improved, and high-quality preparation of breathable waterproof coatings is ensured.

[0026] Furthermore, the speed of the preliminary mixing is 300-500 rpm, and the mixing time is 10-15 minutes; the lifting mixing time is 20-30 minutes; the speed of the fine mixing is 800-1000 rpm, and the mixing time is 15-20 minutes.

[0027] By adopting the above technical solution, the mixing process parameters are further optimized to ensure the high efficiency of the mixing process and the stability of the coating performance.

[0028] Compared with the prior art, the second object of the present invention has the following beneficial effects: The method for preparing a breathable waterproof coating described in the present invention achieves uniform mixing of coating raw materials through a process design of layered mixing and fine mixing, thereby solving the problem of uneven mixing in existing methods; optimizes mixing process parameters, improves mixing efficiency and stability of coating performance; adopts automated control technology to achieve precise control of the mixing process, thereby improving production efficiency and product quality; the prepared breathable waterproof coating has good air permeability and waterproofness, while avoiding the problems of bubbling and bulging of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0030] In the attached picture: Figure 1 This is a schematic diagram of the overall structure of a mixing device for a breathable waterproof coating according to Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of an exploded view of a mixing device according to Embodiment 1 of the present invention; Figure 3 It is a schematic diagram of the connecting frame part of the driving mechanism according to the first embodiment of the present invention; Figure 4 It is a schematic diagram of the auxiliary cylinder part of the driving mechanism according to the first embodiment of the present invention; Figure 5 This is an exploded schematic diagram of the auxiliary cylinder and the driving sleeve according to the first embodiment of the present invention; Figure 6 This is an exploded schematic diagram of the first and second sealing members according to the first embodiment of the present invention; Figure 7 A cross-sectional view of a special-shaped sealing ring according to Embodiment 1 of the present invention; Figure 8 This is an exploded schematic diagram of the driving sleeve and the driven rod according to the first embodiment of the present invention; Fig. 9 This is an exploded schematic diagram of the lifting mechanism according to the first embodiment of the present invention; Fig.10 This is a schematic diagram of the exploded view of the lead screw and the driven rod according to the first embodiment of the present invention.

[0031] Description of reference numerals: 1. Tank body; 2. Dispersion plate; 3. Driving mechanism; 301. Connecting frame; 302. Driven rod; 303. First motor; 304. First flange; 305. Transmission box; 306. Driving sleeve; 307, first sealing member; 3071, expansion sealing pad; 3072, pressure ring; 308, second sealing member; 3081, special-shaped sealing ring; 3082, second flange; 3083, groove; 309, auxiliary cylinder; 310, key block; 311, keyway; 4. Lifting mechanism; 401. Second motor; 402. Screw rod; 403. Round hole; 404. Bump; 405. Electromagnetic clutch; 5. Through hole; 6. Bracket. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0033] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Embodiment 1

[0036] This embodiment relates to a mixing device for a breathable waterproof coating, the overall structure of which is as follows: Figure 1 and Figure 2 As shown, it includes a tank body 1, a dispersion plate 2, a driving mechanism 3, and a lifting mechanism 4.

[0037] Among them, the tank body 1 is installed on the bracket 6, the driving mechanism 3 is installed on the top of the tank body 1 and extends into the tank body 1, the dispersion disk 2 is installed at one end of the driving mechanism 3 extending into the tank body 1, the dispersion disk 2 rotates with the driving mechanism 3 to mix the raw materials of the waterproof coating, the lifting mechanism 4 is installed on the driving mechanism 3 and penetrates into the driving mechanism 3, and the lifting mechanism 4 drives the dispersion disk 2 to stay at any height position in the tank body 1.

[0038] It is worth mentioning that the bracket 6 is used to fix the tank body 1. A through hole 5 is provided on the top of the tank body 1 for the driving mechanism 3 to be inserted. An inlet is also provided on the tank body 1 for other raw materials to enter. The inlet is connected to the conveying pipeline through a valve. After the raw materials enter the tank body 1 through the inlet, the driving mechanism 3 drives the dispersion disk 2 to rotate, thereby mixing the raw materials. The lifting mechanism 4 passes through the inside of the driving mechanism 3 and is connected to the dispersion disk 2. Its purpose is to be able to control the lifting and lowering of the dispersion disk 2 to ensure that the dispersion disk 2 can stir the raw materials at different positions, thereby improving the stirring speed and stirring uniformity.

[0039] Based on the above overall introduction, an exemplary structure of the mixing device and preparation method of the breathable waterproof coating of this embodiment is as follows: Figure 3As shown, the driving mechanism 3 includes a connecting frame 301 fixedly arranged at the through hole 5 of the tank body 1, a driven rod 302 rotatably arranged in the connecting frame 301 and extending into the tank body 1, a first motor 303 fixedly arranged on the top of the connecting frame 301 to drive the driven rod 302 to rotate, and the dispersion disk 2 is fixedly arranged at the bottom of the driven rod 302.

[0040] It should be noted that a first flange 304 is welded to the bottom of the connecting frame 301, and the first flange 304 and the tank body 1 are sealed by a sealing ring. This arrangement ensures the sealing between the connecting frame 301 and the through hole 5. The top of the driven rod 302 is connected to the first motor 303, and then passes through the connecting frame 301 and the through hole 5 to enter the tank body 1. The dispersion disk 2 is installed at the bottom of the driven rod 302. When the first motor 303 is started, it can drive the driven rod 302 to rotate, thereby realizing the dispersion disk 2 to mix the raw materials.

[0041] As a preferred example, Figure 3 and Figure 4 As shown, in this embodiment, a transmission box 305 is fixedly arranged on the top of the connecting frame 301, and the first motor 303 drives the transmission box 305 to rotate. A driving sleeve 306 extending into the tank body 1 is fixedly arranged at the output end of the transmission box 305, and the driven rod 302 is penetrated on the driving sleeve 306 and rotates with the driving sleeve 306. Specifically, the transmission box 305 is installed on the top of the connecting frame 301, the first motor 303 is installed on the transmission box 305, the driving sleeve 306 is penetrated in the transmission box 305, and the driving sleeve 306 is key-connected with the output end of the transmission box 305. The transmission box 305 is a common transmission accessory in the prior art, and multiple bevel gears can be selected for meshing transmission inside. The driving sleeve 306 can be key-connected with the bevel gears, which will not be described in detail here. The bottom of the driving sleeve 306 extends from the through hole 5 into the tank body 1, that is, the driven rod 302 is connected to the driving sleeve 306 in the tank body 1, and when the driving sleeve 306 rotates, the driven rod 302 is driven to rotate.

[0042] As a preferred example, Figure 3 and Figure 4 and Figure 5 As shown, in this embodiment, a first sealing member 307 is arranged between the driving sleeve 306 and the connecting frame 301, an auxiliary cylinder 309 extending into the tank body 1 is arranged at the bottom of the first sealing member 307, the driving sleeve 306 and the driven rod 302 are located in the auxiliary cylinder 309, the bottom of the driven rod 302 passes through the auxiliary cylinder 309 and is located in the tank body 1, and a second sealing member 308 is arranged between the driven rod 302 and the auxiliary cylinder 309.

[0043] Specifically, the first sealing member 307 can seal between the connecting frame 301 and the driving sleeve 306, and cooperate with the sealing ring between the connecting frame 301 and the tank body 1 to ensure the sealing between the tank body 1 and the connecting frame 301, thereby preventing the leakage of raw materials in the tank body 1 or the leakage of flying dust. A sealing ring is also provided between the auxiliary cylinder 309 and the first sealing member 307, and cooperate with the second sealing member 308 to ensure the sealing of the auxiliary cylinder 309. Of course, a second sealing member 308 can also be provided between the auxiliary cylinder 309 and the first sealing member 307 to also ensure the sealing. The connection between the driving sleeve 306 and the driven rod 302 is located in the auxiliary cylinder 309. Such a setting can prevent the raw materials from entering the auxiliary cylinder 309. That is to say, the function of the auxiliary cylinder 309 is to protect the driving sleeve 306 and the driven rod 302.

[0044] In addition, if Figure 5 and Figure 6 As shown, the first sealing member 307 of this embodiment includes an expansion sealing pad 3071 arranged between the driving sleeve 306 and the connecting frame 301, and two pressure rings 3072 clamping and fixing the expansion sealing pad 3071 on the connecting frame 301; the second sealing member 308 includes a special-shaped sealing ring 3081 arranged between the driven rod 302 and the auxiliary tube 309, and a second flange 3082 that abuts the special-shaped sealing ring 3081 against the bottom of the auxiliary tube 309.

[0045] It should be noted that the expansion sealing gasket 3071 is located between the first flange 304 and the driving sleeve 306 at the bottom of the connecting frame 301. The opening in the middle of the first flange 304 is smaller than the opening of the connecting frame 301, ensuring that the two sides of the expansion sealing ring can respectively abut the sides of the first flange 304 and the driving sleeve 306. The two pressure rings 3072 are respectively located on the upper and lower sides of the first flange 304, and then fastened to the first flange 304 by screws. The thickness of the expansion sealing ring is greater than the thickness of the first flange 304. The extrusion of the two pressure rings 3072 can cause the expansion sealing ring to deform, thereby ensuring that sealing is achieved between the driving sleeve 306 and the connecting frame 301. This arrangement ensures that the driving sleeve 306 can maintain sealing when rotating.

[0046] In addition, if Figure 6 and Figure 7As shown, a groove 3083 for placing a special-shaped sealing ring 3081 is provided at the bottom of the auxiliary cylinder 309 of this embodiment. The special-shaped sealing ring 3081 is sleeved on the driven rod 302, and the second flange 3082 is fixed to the bottom of the auxiliary cylinder 309 by screws to ensure that the second flange 3082 can abut against the special-shaped sealing ring 3081. Such a setting can not only seal the second flange 3082 and the auxiliary cylinder 309, but also seal the driven rod 302 and the special-shaped sealing ring 3081, ensuring that the driven rod 302 can maintain sealing when rotating. It should be noted that the special-shaped sealing ring 3081 is a deformed n-shape, one side of the n-shape is inclined outward, and the side inclined outward is in contact with the driven rod 302, and the other side is in contact with the inner wall of the auxiliary tube 309. In addition, a sealing ring is surrounded on the inclined side, which can ensure that the side of the special-shaped sealing ring 3081 inclined outward is tightly fitted with the driven rod 302, and the other side of the special-shaped sealing ring 3081 can be tightly fitted with the auxiliary tube 309 through the abutment of the second flange 3082. This arrangement ensures the sealing between the driven rod 302 and the auxiliary tube 309, and prevents the mixed slurry of the waterproof coating from entering the auxiliary tube 309.

[0047] As a preferred example, Figure 8 As shown, in this embodiment, a spline connection is adopted between the driving sleeve 306 and the driven rod 302, a key block 310 is provided at the lower part of the driving sleeve 306, a key slot 311 is provided at the upper part of the driven rod 302, and the key block 310 is embedded in the key slot 311 and slides up and down. Specifically, the function of the spline is to ensure that the driving sleeve 306 drives the driven rod 302 to rotate, and the lifting mechanism 4 drives the driven rod 302 to rise and fall. Such a setting can realize the rotation and lifting of the driven rod 302 and the dispersion disk 2, thereby improving the mixing efficiency and mixing speed of the raw materials. It should be noted that a bearing is provided between the driving sleeve 306 and the auxiliary cylinder 309 to assist the rotation of the driving sleeve 306 and ensure the stability of the rotation of the driving sleeve 306. The key slot 311 of the driven rod 302 is provided at the upper part, and its purpose is to ensure that the key slot 311 can only move in the auxiliary cylinder 309. Such a setting ensures that the special-shaped seal plays a sealing role and will not be affected by the key slot 311.

[0048] As a preferred embodiment, Fig. 9 and Fig.10As shown, the lifting mechanism 4 of this embodiment includes a second motor 401 fixedly arranged on a transmission box 305, a screw rod 402 passed through a driving sleeve 306 and rotated with the second motor 401, and a circular hole 403 for the screw rod 402 to pass through is opened on the driven rod 302, and a protrusion 404 engaged with the screw rod 402 is arranged on the inner wall of the circular hole 403. Specifically, the driving end of the second motor 401 is connected to the screw rod 402, and the screw rod 402 is connected to the driven rod 302 after being inserted into the driving sleeve 306, that is, the second motor 401 drives the screw rod 402 to rotate, and the screw rod 402 drives the driven rod 302 to move up and down along the axial direction of the screw rod 402, and the protrusion 404 on the driven rod 302 is adapted to the thread groove on the screw rod 402. Such an arrangement enables the protrusion 404 to move up and down along the thread groove of the screw rod 402 when the screw rod 402 rotates, thereby adjusting the arbitrary height position of the dispersion disk 2 in the tank body 1, and a bearing is arranged between the screw rod 402 and the driving sleeve 306 to ensure the stability of the rotation of the screw rod 402. The screw rod 402 can adopt a reciprocating screw rod 402, that is, there are two thread grooves with the same pitch but opposite rotation directions on the surface of the screw rod 402, and the two ends are connected by a transition curve. Such an arrangement ensures that the driven rod 302 can move up and down reciprocatingly.

[0049] In addition, it should be noted that Fig. 9 As shown, the second motor 401 and the lead screw 402 are connected by an electromagnetic clutch 405. The electromagnetic clutch 405 is a common quick connection or disconnection accessory in the prior art and will not be described in detail here. When the electromagnetic clutch 405 and the second motor 401 are started, the drive shaft of the second motor 401 and the lead screw 402 are connected, the second motor 401 drives the lead screw 402 to rotate, and the lead screw 402 drives the driven rod 302 to move up and down along the axial direction. When the electromagnetic clutch 405 is turned off, the drive shaft of the second motor 401 and the lead screw 402 are disconnected. At this time, when the drive sleeve 306 drives the driven rod 302 to rotate, since the lead screw 402 is not bound, the lead screw 402 will follow the driven rod 30 2 rotates, that is, when the driving sleeve 306 drives the driven rod 302 to rotate, the second motor 401 is disconnected from the screw rod 402, and when the electromagnetic clutch 405 is started, the second motor 401 is not started, and the screw rod 402 is bound by the second motor 401. When the driving sleeve 306 drives the driven rod 302 to rotate, the protrusion 404 on the driven rod 302 moves along the thread groove on the screw rod 402, and the key groove 311 on the driven rod 302 rises and falls along the key block 310. Since the screw rod 402 is a reciprocating screw rod 402, the driven rod 302 will rise and fall reciprocatingly on the screw rod 402, that is, the driven rod 302 rises and falls while rotating, thereby further improving the mixing efficiency and mixing quality.

[0050] The mixing equipment for the breathable waterproof coating in the present embodiment realizes multi-position stirring of the dispersion disk 2 in the tank body 1 by setting a lifting mechanism 4, effectively improving the mixing efficiency and mixing uniformity, and solving the problem of uneven mixing in the existing equipment; adopts spline connection and sealing design to optimize the transmission structure and sealing performance, and ensure the stability and reliability of the equipment under complex working conditions; through the combination of the transmission box 305 and the electromagnetic clutch 405, the precise lifting and lowering control of the dispersion disk 2 is realized, and the degree of automation of the mixing process is improved; the overall structure of the equipment is compact and easy to operate, suitable for large-scale industrial production, and reduces production costs; the flexibility and adaptability of the coating are improved, and the service life of the coating is extended. Embodiment 2

[0051] This embodiment relates to a preparation method for a waterproof coating, the steps of which include: Step 1: Prepare the raw materials of the breathable waterproof coating, including the following components: Acrylic emulsion (or polyurethane emulsion): as film-forming base material, accounting for 30%-40%; Breathable additives (hydrophilic silica or breathable microporous materials): 5%-10%; Waterproofing agents (hydrophobic nanomaterials or waterproofing emulsions): 5%-8%; Fillers (heavy calcium carbonate, talcum powder, etc.): 15%-20%; Thickener (hydroxyethyl cellulose): 0.5%-1%; Dispersant (polyphosphate dispersant): 0.5%-1%; Defoaming agent (organic silicon defoaming agent): 0.2%-0.5%; Preservatives (benzisothiazolinone): 0.1%-0.3%; Water: Balance.

[0052] Step 2: Add the above raw materials into the tank 1 of the mixing device in sequence through the inlet on the tank 1. First add the acrylic emulsion (or polyurethane emulsion), and then add the air permeability additive, waterproof additive, filler, thickener, dispersant, defoamer, preservative and water in sequence, ensuring that each raw material is added in an accurate proportion.

[0053] Step 3, start the first motor 303, drive the driven rod 302 and the dispersion disc 2 to rotate through the transmission box 305 and the driving sleeve 306, and preliminarily mix the raw materials in the tank body 1. Set the speed of the dispersion disc 2 to 300-500 rpm, and the mixing time to 10-15 minutes to preliminarily disperse the raw materials.

[0054] Step 4, start the electromagnetic clutch 405, the screw rod 402 stops rotating, the driving sleeve 306 drives the driven rod 302 to rotate, and the driven rod 302 moves up and down along the axial direction of the screw rod 402, so that the dispersion plate 2 is mixed at different heights in the tank body 1. The dispersion plate 2 is raised and lowered while rotating to ensure that the raw materials are fully mixed at different levels, and the lifting and mixing time is 20-30 minutes.

[0055] Step 5, turn off the first motor 303, start the second motor 401, drive the screw rod 402 to rotate, and the screw rod 402 drives the driven rod 302 to move up and down along the axial direction of the screw rod 402, so that the dispersion disk 2 stays in the middle position of the tank body 1.

[0056] Step six, turn off the second motor 401 and the electromagnetic clutch 405, start the first motor 303, drive the driven rod 302 and the dispersion disk 2 to rotate through the transmission box 305 and the drive sleeve 306, increase the speed of the dispersion disk 2 to 800-1000 rpm, perform fine mixing, and further improve the uniformity of the coating. The mixing time is 15-20 minutes.

[0057] Step seven, after the mixing is completed, all equipment is turned off and the prepared breathable waterproof coating is discharged through the discharge port at the bottom of the tank body 1.

[0058] Step 8: Test the performance of the prepared breathable waterproof coating, including air permeability, waterproofness, and adhesion indicators, to ensure that it meets the product standards. If the test results do not meet the requirements, adjust the raw material ratio according to the situation and remix.

[0059] The role of acrylic emulsion: as a film-forming base material, it provides the main film-forming substance of the coating, giving the coating good adhesion, flexibility and weather resistance. Polyurethane emulsion has higher wear resistance and chemical resistance.

[0060] The function of the air permeability additive is to form a microporous structure in the coating, allowing water vapor to pass through while preventing liquid water from penetrating, thus achieving the effect of being air-permeable and water-tight.

[0061] The role of waterproofing additives: enhance the waterproof performance of the coating, make the coating surface more hydrophobic, and reduce the erosion of water on the coating.

[0062] The role of fillers: adjust the consistency of the coating, reduce costs, and improve the hardness and durability of the coating.

[0063] The role of thickener: increase the viscosity of the paint, improve construction performance, prevent the paint from flowing during construction, and improve the uniformity of the coating.

[0064] The role of dispersant: help fillers and other solid particles to be evenly dispersed in the coating system, prevent particle agglomeration, and improve the stability and uniformity of the coating.

[0065] The function of defoaming agent: during the mixing and construction process of paint, it inhibits the generation of foam, reduces bubbles in the coating, and improves the appearance quality of the coating.

[0066] The role of preservatives: prevent the growth of microorganisms during storage and use of paint, and extend the shelf life and service life of the paint.

[0067] The role of water: As a solvent, it adjusts the viscosity and construction performance of the paint and makes the paint easy to apply.

[0068] By rationally proportioning these raw materials, the breathable waterproof coating produced not only has excellent waterproof and breathable properties, but also has good construction performance and environmental protection, and is suitable for a variety of building waterproofing scenarios.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mixing device for a breathable waterproof coating, characterized in that: It comprises a tank body (1), a dispersion plate (2), a driving mechanism (3) and a lifting mechanism (4); The tank body (1) is mounted on a bracket (6), the driving mechanism (3) is mounted on the top of the tank body (1) and extends into the tank body (1), the dispersion plate (2) is mounted on one end of the driving mechanism (3) extending into the tank body (1), and the dispersion plate (2) rotates with the driving mechanism (3) to mix the raw materials of the waterproof coating; The lifting mechanism (4) is mounted on the driving mechanism (3) and is arranged inside the driving mechanism (3). The lifting mechanism (4) drives the dispersion plate (2) to stay or rise and fall at any height position in the tank body (1).

2. The mixing device of the breathable waterproof coating according to claim 1, characterized in that: The driving mechanism (3) comprises a connecting frame (301) fixedly arranged on the tank body (1), a driven rod (302) rotatably arranged in the connecting frame (301) and extending into the tank body (1), and a first motor (303) fixedly arranged at the top of the connecting frame (301) for driving the driven rod (302) to rotate, the dispersion disc (2) fixedly arranged at the bottom of the driven rod (302), and a first flange (304) connected to the tank body (1) is arranged at the bottom of the connecting frame (301).

3. The mixing device of the breathable waterproof coating according to claim 2, characterized in that: A transmission box (305) is fixedly arranged on the top of the connecting frame (301); the first motor (303) drives the transmission box (305) to rotate; a driving sleeve (306) extending into the tank body (1) is fixedly arranged on the output end of the transmission box (305); and the driven rod (302) is inserted into the driving sleeve (306) and rotates with the driving sleeve (306).

4. The mixing device of the breathable waterproof coating according to claim 3, characterized in that: The driving sleeve (306) and the driven rod (302) are connected by a spline; a key block (310) is provided at the lower portion of the driving sleeve (306); a key slot (311) is provided at the upper portion of the driven rod (302); the key block (310) is embedded in the key slot (311) and slides up and down.

5. The mixing device of the breathable waterproof coating according to claim 3, characterized in that: A first sealing member (307) is provided between the driving sleeve (306) and the connecting frame (301); an auxiliary tube (309) extending into the tank body (1) is provided at the bottom of the first sealing member (307); the driving sleeve (306) and the driven rod (302) are located in the auxiliary tube (309); the bottom of the driven rod (302) passes through the auxiliary tube (309) and is located in the tank body (1); and a second sealing member (308) is provided between the driven rod (302) and the auxiliary tube (309).

6. The mixing device of the breathable waterproof coating according to claim 5, characterized in that: The first sealing member (307) comprises an expansion sealing pad (3071) arranged between the drive sleeve (306) and the connecting frame (301); the expansion sealing pad (3071) is clamped and fixedly arranged on the connecting frame (301) by two pressure rings (3072).

7. The mixing device of the breathable waterproof coating according to claim 5, characterized in that: The second sealing member (308) comprises a special-shaped sealing ring (3081) arranged between the driven rod (302) and the auxiliary tube (309); the special-shaped sealing ring (3081) abuts against the bottom of the auxiliary tube (309) via a second flange (3082).

8. A mixing device for a breathable waterproof coating according to any one of claims 3 to 7, characterized in that: The lifting mechanism (4) comprises a second motor (401) fixedly mounted on a transmission box (305) and a screw rod (402) inserted into a driving sleeve (306) and rotating with the second motor (401); a circular hole (403) for the screw rod (402) to pass through is provided on the driven rod (302); a convex block (404) engaged with the screw rod (402) is provided on the inner wall of the circular hole (403); and the second motor (401) is connected to the screw rod (402) via an electromagnetic clutch (405).

9. A method for preparing a breathable waterproof coating, using the mixing device for the breathable waterproof coating as claimed in claim 8, characterized in that: The following steps are involved: S1. Add acrylic emulsion or polyurethane emulsion, air permeability additive, waterproof additive, filler, thickener, dispersant, defoamer, preservative and water into the tank (1) of the mixing device in sequence; S2, starting the first motor (303), driving the driven rod (302) and the dispersion disk (2) to rotate through the transmission box (305) and the driving sleeve (306), thereby preliminarily mixing the raw materials; S3, starting the electromagnetic clutch (405) to stop the screw rod (402) from rotating, and the driving sleeve (306) driving the driven rod (302) to rotate, while the driven rod (302) moves up and down along the axial direction of the screw rod (402), so that the dispersion plate (2) is moved up and down at different heights in the tank body (1) for mixing; S4, turning off the first motor (303), starting the second motor (401), driving the screw rod (402) to rotate, and the screw rod (402) drives the dispersion plate (2) to stay in the middle position of the tank body (1); S5, turning off the second motor (401) and the electromagnetic clutch (405), starting the first motor (303), increasing the rotation speed of the dispersion disk (2), and performing fine mixing; S6. After the mixing is completed, all equipment is turned off and the prepared breathable waterproof coating is discharged through the discharge port at the bottom of the tank (1).

10. The method for preparing the breathable waterproof coating according to claim 9, characterized in that: The rotation speed of the preliminary mixing is 300-500 rpm, and the mixing time is 10-15 minutes; The lifting and mixing time is 20-30 minutes; The rotation speed of the fine mixing is 800-1000 rpm, and the mixing time is 15-20 minutes.

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