Dip coating apparatus for waterproofing membranes

Abstract

The application relates to the field of waterproof roll production, and discloses a dip coating equipment for waterproof roll, which comprises a dip coating pool, a coating conveying mechanism and a pneumatic pulse device, wherein the bottom wall of the dip coating pool is provided with a discharge groove with an inverted triangular cross section, and the side wall of the discharge groove is provided with a discharge port; the coating conveying mechanism is arranged in the discharge groove and is used for conveying coating to the discharge port; and the pneumatic pulse device is arranged at the bottom of the dip coating pool and is used for emitting high-pressure gas to the discharge groove. The dip coating equipment for waterproof roll is favorable for realizing automatic slag removal operation, reducing the difficulty of the removal operation, and improving the removal operation efficiency.

Description

Technical Field

[0001] This application belongs to the field of waterproof membrane production technology, and specifically relates to dipping equipment for waterproof membranes. Background Technology

[0002] Impregnation is a crucial step in the manufacturing of reinforced bitumen waterproof membranes. By immersing the base material in an impregnation tank, the coating (such as bitumen) penetrates the fibers of the base material, expelling any remaining moisture and providing protection against moisture, corrosion, and water. During impregnation, the coating temperature determines the effectiveness of the impregnation. Existing production lines typically have heating devices in their impregnation tanks to raise the coating to a specific temperature during the impregnation process. However, these heating devices are often shut off during periods of pause to reduce energy consumption. During static storage, the temperature drop and stratification cause solid impurities to settle at the bottom of the impregnation tank. Workers must wait for the coating to cool down before manually removing these particles, resulting in inefficient, difficult, time-consuming, and labor-intensive removal processes. Utility Model Content

[0003] In view of at least one of the above-mentioned defects or deficiencies in the prior art, this application provides a dipping and coating equipment for waterproof membranes, which facilitates automatic slag removal and cleaning operations, reduces the difficulty of cleaning operations, and improves the efficiency of cleaning operations.

[0004] To achieve the above objectives, this application provides an impregnation and coating apparatus for waterproof membranes, the apparatus comprising:

[0005] The dip coating tank has a discharge trough with an inverted triangular cross-section on its bottom wall and a discharge port on its side wall.

[0006] A paint conveying mechanism, disposed in the discharge trough and used to convey paint to the discharge port; and

[0007] A pneumatic pulse device is installed at the bottom of the dip coating tank and is used to emit high-pressure gas into the discharge trough.

[0008] In some embodiments, the dip coating apparatus further includes a pool wall cleaning mechanism for cleaning the inner wall of the dip coating tank.

[0009] In some embodiments, the pool wall cleaning mechanism includes:

[0010] A wall scraper is used to wipe the inner wall of the immersion coating tank;

[0011] A wall scraping drive assembly is used to drive the wall scraping paddle to move relative to the inner wall of the immersion tank.

[0012] In some embodiments, the inner wall of the dip coating tank is provided with a silicon carbide wear-resistant layer.

[0013] In some embodiments, the paint conveying mechanism is a screw conveyor.

[0014] In some embodiments, the pneumatic pulse device includes a plurality of jet nozzles arranged sequentially at intervals along the circumference of the immersion tank.

[0015] In some embodiments, the dip coating apparatus includes:

[0016] A spiral stirring device is used to stir the coating in the dip-coating tank.

[0017] In some embodiments, the spiral stirring device includes:

[0018] Spiral blades;

[0019] A rotary drive mechanism is used to drive the helical blades to rotate;

[0020] A lifting drive mechanism is used to drive the spiral blades to move up and down.

[0021] In some embodiments, the surface of the helical blade is provided with a polytetrafluoroethylene wear-resistant layer.

[0022] In some embodiments, the dip coating apparatus includes:

[0023] A heat-conducting oil pipe is laid on the side wall of the dip coating tank and is used to heat the coating in the dip coating tank.

[0024] This application incorporates an inverted triangular discharge trough at the bottom of the dip coating tank, allowing paint sediment to automatically accumulate at the bottom of the trough under gravity, facilitating centralized discharge. Simultaneously, a paint conveying mechanism within the discharge trough effectively removes the accumulated paint sediment from the dip coating tank, achieving automated sediment removal without manual cleaning, significantly improving efficiency and reducing operational difficulty. Furthermore, a pneumatic pulse device at the bottom of the dip coating tank emits high-pressure gas onto the paint sediment at the bottom, further drawing the sediment towards the discharge trough for centralized discharge.

[0025] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0027] Figure 1 This is a schematic diagram of a dipping and coating equipment for waterproof membrane according to a specific embodiment of this application;

[0028] Figure 2 This is a schematic diagram of another dipping and coating equipment for waterproof membranes according to a specific embodiment of this application;

[0029] Figure 3 This is a schematic diagram of another dipping and coating device for waterproof membranes according to a specific embodiment of this application.

[0030] Explanation of reference numerals in the attached figures

[0031] 1. Dipping tank; 2. Coating conveying mechanism; 3. Pneumatic pulse device; 4. Tank wall cleaning mechanism; 5. Spiral agitator; 6. Heat transfer oil pipe; 101. Discharge trough; 102. Discharge port; 201. Spiral conveying mechanism; 301. Air nozzle; 401. Wall scraper; 402. Wall scraping drive assembly; 501. Spiral blade; 502. Rotation drive mechanism; 503. Lifting drive mechanism. Detailed Implementation

[0032] The specific embodiments of this application 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 application.

[0033] The present application will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0034] like Figure 1 Harmony Figure 2 As shown, an exemplary embodiment of this application provides an impregnation coating device for waterproof membranes. The impregnation coating device includes an impregnation tank 1, a coating conveying mechanism 2, and a pneumatic pulse device 3. The bottom wall of the impregnation tank 1 is provided with a discharge trough 101 with an inverted triangular cross-section, and the side wall of the discharge trough 101 is provided with a discharge port 102. The coating conveying mechanism 2 is disposed in the discharge trough 101 and is used to convey coating to the discharge port 102. The pneumatic pulse device 3 is disposed at the bottom of the impregnation tank 1 and is used to emit high-pressure gas into the discharge trough 101.

[0035] In this embodiment, the immersion coating tank 1 can be a tank with an inverted trapezoidal cross-section, as shown in the reference. Figure 1The bottom of the tank is a discharge trough 101 with an inverted triangular cross-section, or it can be a V-shaped or U-shaped bottom, that is, two inclined surfaces tilt towards the middle, and the inclined surfaces are at least 30°, so that the coating sediment can automatically flow to the discharge trough under the action of gravity.

[0036] The material accumulates at the bottom (i.e., the middle) of the trough 101, which facilitates centralized discharge.

[0037] Meanwhile, by installing a paint conveying mechanism 2 in the discharge trough 101, the paint conveying mechanism 2 can discharge the paint sediment accumulated in the discharge trough 101 through the discharge port 102 into the dipping tank 1. This facilitates the automated removal of sediment from the dipping tank 1, eliminating the need for manual cleaning, significantly improving operational efficiency and reducing operational difficulty. In particular, even if the paint in the dipping tank 1 has not yet cooled, the paint sediment can still be discharged through the paint conveying mechanism 2, saving time and labor.

[0038] In addition, by installing a pneumatic pulse device 3 at the bottom of the dipping tank 1, high-pressure gas can be emitted from the pneumatic pulse device 3 towards the coating material deposited at the bottom of the tank, causing the coating sediment to further accumulate in the discharge trough 101 for centralized discharge. In this embodiment, the pneumatic pulse device 3 may include a pressure regulating valve and a jet nozzle 301. The pressure regulating valve is provided with a high-pressure chamber for generating high-pressure gas, and the jet nozzle 301 is connected to the high-pressure chamber for ejecting high-pressure gas. In this embodiment, the pneumatic pulse device 3 emits high-pressure gas with a pressure range of 0.4-0.6 MPa at a frequency of once every 80-120 seconds. The jet nozzle 301 may be a fan-shaped nozzle, which is beneficial for expanding the injection range of high-pressure gas, and the tilt angle of the jet nozzle 301 is preferably 60-90°, thereby facilitating the obtaining of a better gas injection angle.

[0039] In one embodiment, such as Figure 2 As shown, the pneumatic pulse device 3 may include multiple nozzles 301, which are arranged sequentially at intervals along the circumference of the immersion tank 1. (Refer to...) Figure 2 Multiple jet nozzles 301 are distributed at least at the four bottom corners of the dip coating tank 1, so that high-pressure gas can be sprayed from the four bottom corners of the dip coating tank 1 to the central area of ​​the dip coating tank 1, causing the paint sediment located at the edge of the dip coating tank 1 to gather towards the discharge trough 101 in the middle, which is more conducive to centralized discharge.

[0040] Furthermore, when a stirring device for stirring the coating is provided in the dip coating tank 1, the pneumatic pulse device 3 can work in conjunction with the stirring device to achieve better mixing and higher uniformity of the coating in the dip coating tank 1, which helps to reduce the formation of sediment.

[0041] During prolonged dip coating operations, a large amount of impurities easily accumulate on the inner wall of dip coating tank 1, requiring manual cleaning and wiping of the tank walls later. Therefore, in one embodiment, such as... Figure 2 As shown, the dip coating equipment also includes a pool wall cleaning mechanism 4 for cleaning the inner wall of the dip coating tank 1. The inner wall of the dip coating tank 1 is cleaned by the pool wall cleaning mechanism 4, thereby improving the cleaning efficiency.

[0042] In this embodiment, the pool wall cleaning mechanism 4 can be a scraping mechanism or a high-pressure flushing mechanism. This application does not limit the specific structure of the pool wall cleaning mechanism 4, as long as it can remove the paint deposits from the pool wall. Taking a scraping mechanism as an example, refer to... Figure 2 As a wall-scraping mechanism, the pool wall cleaning mechanism 4 includes a wall-scraping paddle 401 and a wall-scraping drive assembly 402. The wall-scraping drive assembly 402 is connected to the wall-scraping paddle 401, thereby driving the wall-scraping paddle 401 to swing or translate, so that the wall-scraping paddle 401 can wipe the inner wall of the immersion coating pool 1. In this embodiment, the gap between the wall-scraping paddle 401 and the pool wall is at most 3mm. The surface of the blade of the wall-scraping paddle 401 is provided with a polytetrafluoroethylene wear-resistant layer, which can improve the wear resistance of the wall-scraping paddle 401 and extend its service life. The wall-scraping drive assembly 402 can be a linear motor, a rotary motor, etc. The appropriate wall-scraping drive assembly 402 can be selected according to the movement mode of the wall-scraping paddle 401, and this application does not limit it in this regard.

[0043] To improve the wear resistance of the dip coating tank 1, a silicon carbide wear-resistant layer can be provided on the inner wall of the dip coating tank 1. Specifically, the thickness of the silicon carbide wear-resistant layer can be 8-10mm, the porosity can be up to 3%, and the bonding strength between the coating and the substrate of the tank body is at least 15MPa. This ensures that the inner wall of the dip coating tank 1 is not easily damaged, improves the corrosion resistance of the tank wall, thereby extending the service life of the equipment and reducing maintenance costs.

[0044] In one embodiment, such as Figure 2 As shown, the paint conveying mechanism 2 is a screw conveying mechanism 201, such as a horizontal screw conveyor, which can be embedded in the bottom of the discharge trough 101 and arranged along the length of the discharge trough 101. The screw surface can be covered with a polytetrafluoroethylene coating to improve wear resistance and corrosion resistance.

[0045] In one embodiment, such as Figure 2 As shown, the dip coating equipment includes a spiral agitator 5, which is used to agitate the coating material in the dip coating tank 1. The spiral agitator 5 is responsible for agitating the coating material from the surface to the middle layer in the dip coating tank 1, preventing temperature stratification or uneven suspension of solid particles due to static storage. In this application, the spiral agitator 5, the tank wall cleaning mechanism 4, and the pneumatic pulse device 3 can work together to form an all-round agitation system covering the upper, middle, and lower layers, improving the uniformity of the coating material and reducing the formation of sediment.

[0046] Specifically, the spiral agitator 5 includes spiral blades 501, a rotary drive mechanism 502, and a lifting drive mechanism 503. The spiral blades 501 have a polytetrafluoroethylene (PTFE) wear-resistant layer on their surface to improve their wear resistance and corrosion resistance. The rotary drive mechanism 502 drives the spiral blades 501 to rotate, enabling them to fully agitate the coating. The lifting drive mechanism 503 drives the spiral blades 501 to move up and down, allowing them to fully agitate the coating at different depths, preventing coating stratification, reducing sedimentation, and avoiding interference with the vehicle's operating path, ensuring the agitation process does not affect the vehicle's movement.

[0047] In this embodiment, the rotary drive mechanism 502 can be a rotary motor, hydraulic motor, pneumatic motor, etc., and the lifting drive mechanism 503 can be an electric cylinder, electric push rod, electric hoist, linear motor, hydraulic cylinder, pneumatic cylinder, etc., which are not limited in this application. In addition, the rotary drive mechanism 502 can be set on the moving parts of the lifting drive mechanism 503, such as push rod, piston rod, etc., so as to drive the rotary drive mechanism 502 and the spiral blade 501 to move up and down as a whole.

[0048] To reduce delamination of the coating due to uneven temperature, in one embodiment, such as Figure 3 As shown, the dip coating equipment also includes heat transfer oil pipes 6. These pipes are S-shaped and can be laid out to fully cover the sidewalls of the dip coating tank 1. Hot oil is introduced through the heat transfer oil pipes 6, allowing for comprehensive heating of the coating material in the tank 1. This ensures uniform heating of the coating, prevents stratification, and effectively reduces sedimentation. Furthermore, the dip coating equipment may also include distributed temperature sensors located at the bottom of the tank. These sensors monitor the tank temperature in real time and communicate with an external controller. The controller adjusts the hot oil temperature based on the monitoring results, thereby achieving automated regulation of the coating temperature and reducing manual intervention.

[0049] In summary, during the sediment collection stage, the dip coating equipment of this application can collect the sediment into the discharge trough 101. The pneumatic pulse device 3 agitates the sediment, dislodging it from the bottom corners and pushing it towards the discharge trough 101. Simultaneously, the pool wall cleaning mechanism 4 works in conjunction, using a scraper 401 to remove adhering substances from the pool wall, preventing sediment buildup. During the discharge and removal stage, the pneumatic pulse device 3 and the pool wall cleaning mechanism 4 work continuously, concentrating the sediment towards the discharge trough 101. Simultaneously, the spiral stirring device 5 pushes the sediment to the discharge port 102. The sediment can then be transported to a collection container via external pipelines, ensuring a completely sealed process and preventing contamination. During the discharge and removal stage, the slag removal program can be controlled by a PLC system. The PLC system communicates with the pneumatic pulse device 3, the pool wall cleaning mechanism 4, and the spiral stirring device 5 to achieve automated "disturbance-collection-transportation" operations. Furthermore, the PLC system can record slag removal frequency and sediment volume data to optimize production formulas and maintenance cycles.

[0050] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An immersion coating apparatus for a waterproofing membrane, characterized by, The dip coating equipment includes: The bottom wall of the dip coating tank (1) is provided with a discharge trough (101) with an inverted triangular cross-section, and the side wall of the discharge trough (101) is provided with a discharge port (102). A paint conveying mechanism (2) is disposed in the discharge trough (101) and is used to convey paint to the discharge port (102); and A pneumatic pulse device (3) is provided at the bottom of the dip coating tank (1) and is used to emit high-pressure gas into the discharge trough (101).

2. The dipping and coating equipment for waterproof membranes according to claim 1, characterized in that, The dip coating equipment also includes a pool wall cleaning mechanism (4) for cleaning the inner wall of the dip coating pool (1).

3. The dipping and coating equipment for waterproof membranes according to claim 2, characterized in that, The pool wall cleaning mechanism (4) includes: A wall scraper (401) is used to wipe the inner wall of the immersion coating tank (1); A wall scraping drive assembly (402) is used to drive the wall scraping paddle (401) to move relative to the inner wall of the dip coating tank (1).

4. The dipping and coating equipment for waterproof membranes according to any one of claims 1 to 3, characterized in that, The inner wall of the dip coating tank (1) is provided with a silicon carbide wear-resistant layer.

5. The dipping and coating equipment for waterproof membranes according to any one of claims 1 to 3, characterized in that, The paint conveying mechanism (2) is a screw conveying mechanism (201).

6. The dipping and coating equipment for waterproof membranes according to any one of claims 1 to 3, characterized in that, The pneumatic pulse device (3) includes multiple jet nozzles (301), which are arranged sequentially at intervals along the circumference of the immersion tank (1).

7. The dipping and coating equipment for waterproof membranes according to any one of claims 1 to 3, characterized in that, The dip coating equipment includes: A spiral stirring device (5) is used to stir the coating in the dip coating tank (1).

8. The dipping and coating equipment for waterproof membranes according to claim 7, characterized in that, The spiral stirring device (5) includes: Spiral blade (501); A rotary drive mechanism (502) is used to drive the helical blade (501) to rotate; The lifting drive mechanism (503) is used to drive the spiral blade (501) to move up and down.

9. The dipping and coating equipment for waterproof membranes according to claim 8, characterized in that, The surface of the spiral blade (501) is provided with a polytetrafluoroethylene wear-resistant layer.

10. The dipping and coating equipment for waterproof membranes according to any one of claims 1 to 3, characterized in that, The dip coating equipment includes: A heat-conducting oil pipe (6) is laid on the side wall of the dip coating tank (1) and is used to heat the coating in the dip coating tank (1).

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