A waterproofing membrane production process utilizing steam heat

Abstract

The application discloses a waterproof roll production process using steam heating, and belongs to the technical field of waterproof roll production. The waterproof roll ingredients are composed of the following components in percentage by weight: 40-55% of asphalt, 15-50% of rubber powder, 6-10% of sbs, and 25% of stone powder. The process comprises the following steps: 1) powder raw material treatment; 2) raw material mixing; and 3) waterproof roll preparation. The waterproof roll production process using steam heating provided in the application can improve the utilization rate of steam and reduce the production energy consumption simultaneously in combination with the melting and stirring equipment used for producing waterproof rolls, effectively solves the problems that the existing waterproof roll production device using steam heating has many configured motors and low steam utilization rate during use, and increases the cost of waterproof roll production.

Description

Technical Field

[0001] This invention relates to the field of waterproof membrane production technology, specifically a waterproof membrane production process that utilizes steam heating. Background Technology

[0002] Waterproof membranes are waterproof materials made by impregnating a base material with asphalt or polymer waterproofing materials. They are supplied in roll form and can be classified into asphalt waterproof membranes, polymer-modified asphalt waterproof membranes, and synthetic polymer waterproof membranes based on their main components. Waterproof membranes are mainly used in building walls, roofs, tunnels, highways, landfills, and other applications to resist external rainwater and groundwater seepage. They are flexible building materials that can be rolled up to prevent leakage between the foundation and the building. As a leak-proof connection between the foundation and the building, they are the first line of defense for waterproofing the entire project and play a crucial role in the overall project.

[0003] Waterproof membranes are one of the important types of waterproofing materials in building engineering. They are made by mixing asbestos, rubber powder, and other materials with asphalt, followed by impregnation or spraying. The quality of the raw material mixing directly affects the subsequent production quality of the waterproof membrane. Currently, in actual production, to improve the economic value of waterproof membranes, some systems utilize steam generated by power plants to melt and stir the raw materials through heat exchangers. However, existing equipment requires multiple motors, such as drive motors and stirring motors. The stirring motor drives the stirring components to mix the raw materials. Furthermore, existing equipment has low steam utilization, resulting in slow melting of the raw materials under the action of the heat exchanger, which increases the energy consumption of the stirring motor and leads to high costs for waterproof membranes.

[0004] Chinese patent CN113769965B discloses a waterproof membrane production equipment and a waterproof membrane. By setting up a coating mechanism, when coating the base fabric with asphalt, it is not necessary to immerse the base fabric in an asphalt bath. This avoids the stretching of the base fabric when pressed into the asphalt bath, reducing surface tension and preventing severe shrinkage in subsequent processes. It also prevents asphalt from peeling off or wrinkling. Chinese patent CN112936693B discloses a waterproof membrane production equipment, including a base plate, a pretreatment device, an adjustment device, and a winding device. This invention uses the pretreatment device to stretch the base fabric within a certain space, and to stretch, clean, and dry its surface, thus maintaining a relatively uniform and easily coated state. The winding device achieves a more uniform and higher-quality coating effect during the dipping process. The adjustment device, through the cooperation of the lead screw and the scraper support plate, allows for more precise control of the distance between the scraper support plate and the thickness adjustment roller and the base fabric. However, the existing waterproof membrane production process is costly and fails to address the problem that the existing steam-heated waterproof membrane production equipment requires multiple motors and has low steam utilization, resulting in slow melting of raw materials under the action of heat exchangers. This increases the energy consumption of the stirring motor and further increases the cost of the waterproof membrane. Therefore, this application needs to provide a waterproof membrane production process that utilizes steam heating, has high steam utilization, and low cost. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems of existing waterproof membrane production equipment that uses steam heating, which requires many motors and has low steam utilization, thus increasing the cost of waterproof membrane production. This invention provides a waterproof membrane production process that utilizes steam heating, which has high steam utilization and low cost.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a production process for waterproof membrane using steam heating, wherein the waterproof membrane is composed of the following components by weight percentage: asphalt 40-55%, rubber powder 15-50%, SBS 6-10%, and stone powder 25%, comprising the following steps:

[0007] 1) Powder raw material processing: The rubber powder and stone powder are sieved separately to remove hard particle impurities before use.

[0008] 2) Mixing of raw materials: Place asphalt and SBS in a melting and stirring equipment at 220-250℃. First, add 50% by weight of the rubber powder treated in step 1) to the melting and stirring equipment and stir for 8 minutes. Then, add 40% by weight of the stone powder treated in step 1) to the melting and stirring equipment and stir for 12 minutes. Next, add the remaining rubber powder from step 1) to the melting and stirring equipment and stir for 5 minutes. Then, add 40% by weight of the remaining stone powder from step 1) to the melting and stirring equipment and stir for 10 minutes. Finally, add the remaining stone powder from step 1) to the melting and stirring equipment and stir for 15 minutes to obtain the melted and stirred material.

[0009] 3) Preparation of waterproof membrane: The molten material obtained in step 2) is evenly sprayed onto the membrane, and sprayed 3-5 times at equal time intervals to obtain the waterproof membrane.

[0010] Furthermore, the melting and stirring equipment in step 2) includes a reactor with a stirring component, a heat exchanger, and a heating device for supplying heat medium to the heat exchanger, wherein the heat medium inlet and heat medium outlet of the heat exchanger are connected to the reactor through a heating pipe.

[0011] The heating device includes a heating tank with an air inlet at the upper end and a high-temperature steam pressurizing component at the outlet. The outlet of the high-temperature steam pressurizing component is placed inside the heating tank, and the inlet of the high-temperature steam pressurizing component is connected to a steam supply device through a steam pipe. A rotating impeller is provided inside the heating tank corresponding to the outlet of the high-temperature steam pressurizing component. The rotating impeller is sleeved on a rotating rod, and the rotating rod passes through the heating tank laterally and engages with a stirring component.

[0012] The reactor consists of an inner layer and an outer layer. The outer wall of the inner layer of the reactor is provided with pipe grooves at equal intervals in a ring, and high-temperature pipes are laid in the pipe grooves. The feed end of the high-temperature pipe is located on the lower side of the reactor, and the discharge end of the high-temperature pipe is located on the upper side of the reactor. The feed end and discharge end of the high-temperature pipe are connected to the heating pipe. The heat medium inlet and heat medium outlet of the heat exchanger are respectively connected to the heating device to realize circulating heating.

[0013] Furthermore, the high-temperature steam pressurization component is a high-temperature steam pressurization pump, which consists of a drive cylinder, a pressurization cylinder, and a reversing valve. The reversing valve connects the drive cylinder and the pressurization cylinder. The pressurization cylinder is located on the opposite side of the drive cylinder. The pressurization cylinder consists of an inlet check valve, an outlet check valve, a small piston, and a cylinder end cap. The inlet valve prevents gas backflow when gas is drawn into the pressurization cylinder, and the outlet check valve prevents pressurized gas from flowing back into the pressurization cylinder. The reversing valve consists of a valve core and a valve cover. The valve core and the valve cover are sealed by multiple sealing rings. When gas is introduced into the reversing valve, the valve core is controlled by a striker to swing back and forth, enabling the pressurization pump to drive the piston to move continuously.

[0014] Furthermore, the one-way valve at the booster cylinder end is connected to a rotating air outlet connector, and the air outlet connector is connected to 2-4 air outlet pipes, which are inclined downwards.

[0015] Furthermore, the air outlet connector is connected to three air outlet pipes, each including two short pipes and one long pipe. The long pipe is 5-10cm longer than the short pipes. The long pipe is inclined downwards at a 100-115° angle to the horizontal plane, and the short pipes are inclined downwards at a 120-135° angle to the horizontal plane.

[0016] Furthermore, the heating tank is equipped with a spirally wound heat-absorbing pipe through a connecting rod. The heat-absorbing pipe is connected to the heating pipe. The lower end of the heating tank is connected to the lower side of the reactor through a pressure pipe with a one-way regulating valve. The upper side of the reactor is equipped with a corresponding exhaust port. The gas in the heating tank is allowed to enter the reactor jacket through the pressure pipe and be discharged from the exhaust port through the one-way pressure regulating valve, thereby ensuring stable gas pressure in the heating tank while increasing the utilization rate of steam.

[0017] Furthermore, the heating tank is provided with a rotating bearing relative to the rotating rod to reduce the rotational resistance of the rotating rod. The rotating rod is provided with a rotating gear at one end relative to the stirring component, and the stirring component is provided with a rotating toothed disc corresponding to the rotating gear. Pressurized high-temperature steam acts on the rotating impeller, causing the rotating impeller to rotate and driving the rotating rod to rotate, thereby driving the stirring component to rotate.

[0018] The present invention provides a waterproof membrane production process utilizing steam heating, which has the following beneficial effects:

[0019] This invention uses a high-temperature steam pressurization component to pressurize the steam entering the heating tank. This accelerates the filling of the heating tank with steam, improving the heat exchanger's thermal efficiency, and also increases steam utilization. The rotating impeller drives a rotating rod, which in turn drives a meshing stirring component. Compared to traditional production processes, this reduces the need for a motor, further lowering energy consumption during production. The one-way valve at the pressurization cylinder end is connected to a rotatable outlet connector. During the initial steam supply, the rotation of this connector moves the outlet end of the outlet pipe away from the rotating impeller, improving the utilization of the corresponding components. The lifespan is improved by rotating the rotatable gas outlet connector when the raw materials in the reactor are in a semi-molten state, so that the gas outlet end of the gas outlet pipe acts on the rotating impeller, and the impeller is driven to rotate by high-pressure steam, thus improving its practical performance. The gas in the heating tank is allowed to enter the jacket of the reactor through the gas pressure pipe and be discharged from the exhaust port through the one-way pressure regulating valve, thereby ensuring the stable gas pressure of the heating tank and further increasing the utilization rate of steam. The invention is easy to operate, highly practical, and effectively solves the problem that existing waterproof membrane production equipment using steam heating has many motors and low steam utilization rate, which increases the cost of waterproof membrane. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the melting and stirring equipment used in the production process of waterproof membrane using steam heating according to the present invention.

[0021] Figure 2 This is a schematic diagram of the internal structure of the melting and stirring equipment used in the production process of waterproof membrane using steam heating, as described in this invention.

[0022] Figure 3 This is a schematic diagram of the rotating gear disc of the melting and stirring equipment used in the production process of waterproof membrane using steam heating, as described in this invention.

[0023] Figure 4 This is a schematic diagram of the rotating impeller of the melting and stirring equipment used in the production process of waterproof membrane using steam heating, as described in this invention.

[0024] Figure 5 This is a schematic diagram of the air outlet pipe of the melting and stirring equipment used in the production process of waterproof membrane using steam heating according to the present invention.

[0025] Figure 6 This is a schematic diagram of the pipe channel of the melting and stirring equipment used in the production process of waterproof membrane using steam heating according to the present invention.

[0026] In the diagram, 1-reaction vessel, 2-heating pipe, 3-pipeline trench, 4-high temperature pipe, 5-heating tank, 6-connecting rod, 7-heat absorption pipe, 8-pressure pipe, 9-high temperature steam pressurization component, 10-rotating impeller, 11-rotating rod, 12-rotating gear, 13-rotating toothed disc, 14-stirring component, 15-gas outlet pipe. Detailed Implementation

[0027] The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] Example 1: This invention provides a production process for waterproof membrane using steam heating. The waterproof membrane is composed of the following components by weight percentage: asphalt 40-55%, rubber powder 15-50%, SBS 6-10%, and stone powder 25%, comprising the following steps:

[0029] 1) Powder raw material processing: The rubber powder and stone powder are sieved separately to remove hard particle impurities before use.

[0030] 2) Mixing of raw materials: Place asphalt and SBS in a melting and stirring equipment at 220-250℃. First, add 50% by weight of the rubber powder treated in step 1) to the melting and stirring equipment and stir for 8 minutes. Then, add 40% by weight of the stone powder treated in step 1) to the melting and stirring equipment and stir for 12 minutes. Next, add the remaining rubber powder from step 1) to the melting and stirring equipment and stir for 5 minutes. Then, add 40% by weight of the remaining stone powder from step 1) to the melting and stirring equipment and stir for 10 minutes. Finally, add the remaining stone powder from step 1) to the melting and stirring equipment and stir for 15 minutes to obtain the melted and stirred material.

[0031] 3) Preparation of waterproof membrane: Spray the molten material obtained in step 2) evenly onto the membrane, spraying once every 5-15 minutes, for a total of 3-5 sprays, to obtain the waterproof membrane.

[0032] The waterproof membrane produced by this invention is manufactured according to the above-mentioned production process. The raw materials are melted and stirred in a melting and stirring equipment at 220-250℃ and then sprayed. Based on the applicant's many years of production experience and market research results, the comparative test results show that the production process provided by this application reduces energy consumption by more than 15% compared with the existing traditional waterproof membrane production process, and increases the steam utilization rate by more than 8% compared with the existing waterproof membrane production process that uses steam heating.

[0033] Example 2, as Figure 1-6As shown, based on the above embodiments, the melting and stirring equipment used in the processing of this application includes a reactor 1 with a stirring component 14, a heat exchanger, and a heating device for providing heat medium to the heat exchanger. The heat medium inlet and outlet of the heat exchanger are connected to the reactor 1 through a heating pipe 2. This application uses steam heat exchange to heat the heat transfer oil to 220-250°C, and then the heat transfer oil heats the reactor 1 to melt and stir the raw materials in the reactor 1. Compared with traditional heating wire melting or open flame melting, the energy consumption is reduced by 15%. The steam in this application comes from the steam emitted by power plant power generation. The applicant recovers and reuses the emitted steam, improving the utilization rate of resources. The reactor 1 consists of an inner layer and an outer layer. The outer wall of the inner layer of the reactor 1 is provided with pipe grooves 3 at equal intervals in a ring, and high-temperature pipes 4 are laid in the pipe grooves 3. The inner wall of the outer layer of the reactor 1 is provided with a heat insulation layer. The reactor 1 of this application consists of an inner layer and an outer layer. The heat emitted by the high-temperature pipe 4 laid on the outer wall of the inner layer acts on the reactor 1 to make the reactor 1 heated evenly. On the other hand, it increases the retention of the heat emitted by the high-temperature pipe 4, forming a heat-insulating cavity between the inner and outer layers of the reactor 1, thereby effectively improving the melting speed of the raw materials. The feed end of the high-temperature pipe 4 is located on the lower side of the reactor 1, and the discharge end of the high-temperature pipe 4 is located on the upper side of the reactor 1. The feed end and discharge end of the high-temperature pipe 4 are connected to the heating pipe 2. The heat medium inlet and heat medium outlet of the heat exchanger are respectively connected to the heating device. The heating pipe 2 is equipped with a unidirectional heat transfer oil pump. The heat transfer oil in the heating pipe 2 is circulated in one direction through the heat transfer oil pump. This achieves circulating heating. At the same time, the laying of the high-temperature pipe 4 of this application increases the residence time of the heat transfer oil in the high-temperature pipe 4, further improving the melting efficiency of the raw materials of this application device.

[0034] like Figure 2 As shown, the heating device includes a heating tank 5. A spirally wound heat-absorbing pipe 7 is provided inside the heating tank 5 via a connecting rod 6. The heat-absorbing pipe 7 is connected to the heating pipe 2. The lower end of the heating tank 5 is connected to the lower side of the reactor 1 via a pressure pipe 8 with a one-way regulating valve. The reactor 1 has a corresponding exhaust port on its upper side. This application uses a one-way pressure regulating valve to allow the gas filling the heating tank 5 to enter the reactor 1 jacket through the pressure pipe 8 and exit through the exhaust port, effectively ensuring stable gas pressure in the heating tank 5 while increasing steam utilization. Through comparative testing by the applicant, it has been found that the heat loss to the reactor 1 caused by the gas entering the reactor 1 jacket through the pressure pipe 8 and exiting through the exhaust port is very small and almost negligible.

[0035] The heating tank 5 is provided with an air inlet at its upper end, and a high-temperature steam pressurization component 9 is provided at the outlet of the air inlet. The outlet end of the high-temperature steam pressurization component 9 is placed inside the heating tank 5, and the air inlet end of the high-temperature steam pressurization component 9 is connected to the steam supply device through a steam pipe. A rotating impeller 10 is provided inside the heating tank 5 corresponding to the outlet end of the high-temperature steam pressurization component 9. The blades of the rotating impeller 10 are arc-shaped, and under the action of high-pressure steam impact, they can concentrate the high-pressure steam to a single point, preventing the high-pressure steam acting on the blades from dispersing, thereby ensuring that the rotating impeller 10 can operate under the action of high-pressure steam impact. The rotating impeller 10 is sleeved on a rotating rod 11, and the rotating rod 11 laterally penetrates the heating tank 5 and meshes with the stirring component 14, improving the utilization rate of steam in the device and reducing the energy consumption of the device in the production process. Furthermore, the heating tank 5 of this application is provided with a rotating bearing relative to the rotating rod 11, which reduces the rotational resistance of the rotating rod 11. Figure 3-4 As shown, the rotating rod 11 has a rotating gear 12 at one end relative to the stirring component 14, and the stirring component 14 has a rotating gear disk 13 corresponding to the rotating gear 12. The rotating impeller 10 is rotated by pressurized high-temperature steam, which drives the rotating rod 11 to rotate, thereby driving the stirring component 14 to rotate. The rotating gear 12 is meshed with the stirring component 14 through the rotating rod 11. Under the action of pressurized high-temperature steam, the stirring component 14 is driven to mix and stir the raw materials in the reaction vessel 1. Compared with the traditional production process, the steam utilization rate is improved while the motor setting is reduced, thereby reducing the energy consumption of the equipment in the production process and improving the economic value of the waterproof membrane.

[0036] The high-temperature steam booster component 9 is a high-temperature steam booster pump, consisting of a drive cylinder, a booster cylinder, and a reversing valve. The reversing valve connects the drive cylinder and the booster cylinder. The booster cylinder is located on the opposite side of the drive cylinder. The booster cylinder consists of an inlet check valve, an outlet check valve, a small piston, and a cylinder end cap. The inlet valve prevents gas backflow when gas is drawn into the booster cylinder, and the outlet check valve prevents pressurized gas from flowing back into the booster cylinder. The reversing valve consists of a valve core and a valve cover, which are sealed by multiple sealing rings. When the valve reversing... When gas is introduced into the valve, the valve core is controlled by the striker to swing back and forth, so that the booster pump drives the piston to move continuously back and forth. This application uses the high-temperature steam pressurization component 9 to enable the pressurized steam entering the heating tank 5 to quickly and evenly fill the entire heating tank 5. At the same time, when the asphalt raw material in the reactor 1 is heated to a semi-molten state, the pressurized high-temperature steam acts on the rotating impeller 10, driving the rotating impeller 10 to rotate and drive the stirring component 14 to stir and mix the raw material in the reactor 1, thereby improving the steam utilization rate and improving the subsequent production efficiency.

[0037] Example 3: Based on the above examples, the one-way valve at the booster cylinder end of this application is connected to a rotating exhaust connector. To achieve automated operation, the rotating exhaust connector in this invention can be automated through an operation controller and sensors according to a preset structure, improving its practical performance. The exhaust connector is connected to 2-4 exhaust pipes 15, and the exhaust pipes 15 are arranged at a downward inclination. Figure 4-5 As shown, high-pressure steam can directly act on the rotating impeller 10 through the exhaust pipe 15, driving the impeller 10 to rotate in one direction, thereby ensuring the smooth stirring of the stirring component 14. Further experiments by the applicant show that when the distance between the rotating impeller 10 and the exhaust pipe 15 is constant, the exhaust connector described in this application is connected to three exhaust pipes 15. Each exhaust pipe 15 includes two short pipes and one long pipe. The long pipe is 5-10 cm longer than the short pipes. The long pipe is inclined downwards at 100-115° to the horizontal plane, and the short pipe is inclined downwards at 120-135° to the horizontal plane. When the asphalt raw material in the reactor 1 is in a semi-melted state, the stirring component 14 stirs smoothly and at a uniform speed. When the asphalt raw material in the reactor 1 is in a molten state... When the stirring component 14 is in the normal state, it stirs smoothly and without resistance. When the long pipe is inclined downward at 120-135° to the horizontal plane and the short pipe is inclined downward at 100-115° to the horizontal plane, when the asphalt raw material in the reactor 1 is in a semi-molten state, the stirring component 14 stirs slowly and the resistance is high, causing it to swing back and forth. When the asphalt raw material in the reactor 1 is in a molten state, the stirring component 14 stirs slowly and the stirring component 14 is prone to swinging back and forth. It was found that the pressurized steam coming out of the steam outlet pipe 15 did not fully act on the rotating impeller 10. The rotating impeller 10 rotates in the forward direction under the action of the steam coming out of the long pipe. When it alternates, it is easy to rotate in the outward direction under the action of the high-pressure steam, thus causing the above-mentioned problem of the stirring component 14 swinging back and forth.

[0038] Through comparative experiments conducted by the applicant, it was found that when the long pipe of this application is inclined downwards at 100-115° to the horizontal plane, and the short pipe is inclined downwards at 120-135° to the horizontal plane, the contact area of ​​the high-pressure steam acting on the rotating impeller 10 is maximized without affecting the normal rotation of the rotating impeller 10. That is, the high-pressure steam from the two short pipes acts on the middle part of the blades on both sides of the rotating impeller 10, thereby ensuring the smooth rotation of the rotating impeller 10. The high-pressure steam from the long pipe acts on the middle part of the blades on the rotating impeller 10, accelerating the rotation of the rotating impeller 10 and further improving the quality of the rotation of the rotating impeller 10. In this application, the exhaust pipe is initially misaligned during rotation, causing the steam from its outlet to move away from the rotating impeller. Upon subsequent rotation, it is reset, allowing the steam from its outlet to act on the rotating impeller. Thus, the high-pressure steam acting on the rotating impeller 10 drives the rotating rod 11 to rotate, thereby driving the stirring component 14 to stir and mix the raw materials in the reaction vessel 1, reducing the energy consumption of the equipment and improving its economic value.

[0039] In summary, the waterproof membrane production process using steam heating provided in this application, combined with the melting and stirring equipment provided above, reduces overall energy consumption by more than 15% during the production process. Before operation, the equipment is checked for normal operation. Then, the outlet valve at the end of the pressure cylinder is connected to a rotatable outlet connector, so that the outlet pipe 15 does not act on the rotating impeller 10. The steam entering the heating tank 5 is then pressurized by the high-temperature steam pressurization component 9, so that the steam fills the entire heating tank 5. Raw materials are added to the reaction vessel 1 according to the above production process. By observing the state of the raw materials in the reaction vessel 1, when they are in a semi-molten state, the outlet pipe 15 is reset by rotating the outlet valve at the end of the pressure cylinder connected to the rotatable outlet connector. The high-pressure steam coming out of the outlet pipe 15 acts on the rotating impeller 10, driving the rotating impeller 10 to rotate in one direction. The rotation of the rotating impeller 10 drives the rotating rod 11 to rotate, thereby driving the stirring component 14 to rotate.

[0040] The rotating gear 12 described in this application is meshed with the stirring component 14 via the rotating rod 11. Under the action of pressurized high-temperature steam, the stirring component 14 is driven to mix and stir the raw materials in the reactor 1. Compared with the traditional production process, this improves the steam utilization rate while reducing the number of motors, thereby reducing the energy consumption of the equipment in the production process and improving the economic value of the waterproof membrane. This application uses a one-way pressure regulating valve to allow the gas filling the heating tank 5 to enter the jacket of the reactor 1 through the pressure pipe 8 and be discharged from the exhaust port, effectively ensuring the stable gas pressure of the heating tank 5 while increasing the steam utilization rate. This effectively solves the problem that existing waterproof membrane production equipment using steam heating has many motors and low steam utilization rate, which increases the cost of waterproof membrane.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A process for producing waterproof membrane using steam heating, wherein the waterproof membrane is composed of the following components by weight percentage: asphalt 40-55%, rubber powder 15-50%, SBS 6-10%, and stone powder 25%, characterized in that... Includes the following steps: 1) Powder raw material processing: The rubber powder and stone powder are sieved separately to remove hard particle impurities before use. 2) Mixing of raw materials: Place asphalt and SBS in a melting and mixing equipment at 220-250℃. First, add 50% by weight of the rubber powder treated in step 1) to the melting and mixing equipment and melt and mix for 8 minutes. Then, add 40% by weight of the stone powder treated in step 1) to the melting and mixing equipment and melt and mix for 12 minutes. Next, add the remaining rubber powder from step 1) to the melting and mixing equipment and melt and mix for 5 minutes. Then, add 40% by weight of the remaining stone powder from step 1) to the melting and mixing equipment and melt and mix for 10 minutes. Finally, add the remaining stone powder from step 1) to the melting and mixing equipment and melt and mix for 15 minutes to obtain the melted and mixed material. 3) Preparation of waterproof membrane: The melt-stirred material obtained in step 2) is evenly sprayed onto the membrane, and sprayed 3-5 times at equal time intervals to obtain the waterproof membrane. The stirring equipment in step 2) includes a reactor with stirring components, a heat exchanger, and a heating device for supplying heat medium to the heat exchanger, wherein the heat medium inlet and heat medium outlet of the heat exchanger are connected to the reactor through a heating pipe. The heating device includes a heating tank with an air inlet at the upper end and a high-temperature steam pressurizing component at the outlet. The outlet of the high-temperature steam pressurizing component is placed inside the heating tank, and the inlet of the high-temperature steam pressurizing component is connected to a steam supply device through a steam pipe. A rotating impeller is provided inside the heating tank corresponding to the outlet of the high-temperature steam pressurizing component. The rotating impeller is sleeved on a rotating rod, and the rotating rod passes through the heating tank laterally and engages with a stirring component. The reactor consists of an inner layer and an outer layer. The outer wall of the inner layer of the reactor is provided with pipe grooves at equal intervals in a ring, and high-temperature pipes are laid in the pipe grooves. The feed end of the high-temperature pipe is located on the lower side of the reactor, and the discharge end of the high-temperature pipe is located on the upper side of the reactor. The feed end and discharge end of the high-temperature pipe are connected to the heating pipe. The heat medium inlet and heat medium outlet of the heat exchanger are respectively connected to the heating device to realize circulating heating.

2. The production process of waterproof membrane using steam heating according to claim 1, characterized in that: The high-temperature steam pressurization component is a high-temperature steam booster pump, consisting of a drive cylinder, a booster cylinder, and a reversing valve. The reversing valve connects the drive cylinder and the booster cylinder, which is located on the opposite side of the drive cylinder. The booster cylinder consists of an inlet check valve, an outlet check valve, a small piston, and a cylinder end cap. The inlet valve prevents gas backflow when it is drawn into the booster cylinder, and the outlet check valve prevents pressurized gas from flowing back into the booster cylinder. The reversing valve consists of a valve core and a valve cover, which are sealed by multiple sealing rings. When gas is introduced into the reversing valve, the valve core is controlled by a striker to swing back and forth, enabling the booster pump to drive the piston to move continuously.

3. The production process of waterproof membrane using steam heating according to claim 2, characterized in that: The one-way valve at the end of the booster cylinder is connected to a rotating air outlet connector, which is connected to 2-4 air outlet pipes, and the air outlet pipes are inclined downwards.

4. The production process of waterproof membrane using steam heating according to claim 3, characterized in that: The vent connector is connected to three vent pipes, each including two short pipes and one long pipe. The long pipe is 5-10cm longer than the short pipes. The long pipe is inclined downwards at 100-115° to the horizontal plane, and the short pipe is inclined downwards at 120-135° to the horizontal plane.

5. The production process of waterproof membrane using steam heating according to claim 1, characterized in that: The heating tank is equipped with a spiral heat-absorbing pipe connected to a heating pipe via a connecting rod. The lower end of the heating tank is connected to the lower side of the reactor via a pressure pipe with a one-way regulating valve. The reactor is equipped with a corresponding exhaust port on its upper side. The gas in the heating tank is allowed to pass through the pressure pipe into the reactor jacket and be discharged from the exhaust port through the one-way pressure regulating valve, thereby ensuring stable gas pressure in the heating tank while increasing the utilization rate of steam.

6. The production process of waterproof membrane using steam heating according to claim 1, characterized in that: The heating tank is equipped with a rotating bearing relative to the rotating rod to reduce the rotational resistance of the rotating rod. The rotating rod is equipped with a rotating gear at one end relative to the stirring component, and the stirring component is equipped with a rotating toothed disc corresponding to the rotating gear. Pressurized high-temperature steam acts on the rotating impeller, causing the rotating impeller to rotate and driving the rotating rod to rotate, thereby driving the stirring component to rotate.

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