Batching and reacting equipment for producing waterproofing membranes

Abstract

The utility model belongs to waterproof volume production equipment technical field discloses a kind of batching reaction equipment for producing waterproof volume, mainly used to solve the problem of existing technology dust pollution is serious, mixing efficiency is low and proportioning is inaccurate.The utility model by the forced submersion of material guiding pipe export below reaction liquid surface, make powder contact with air in the conveying process, completely eliminate dust production condition, solve dust explosion risk, also make the cleanliness of production environment can realize qualitative leap, effectively avoid occupational health hazards and environmental pollution risk;Powder can be directly released in liquid phase, realize transient wetting effect, improve mixing reaction efficiency;Under liquid conveying path completely avoid powder diffusion and wall-hanging phenomenon, can greatly reduce the loss of powder in the process of feeding, improve the consistency of powder set feeding amount and reaction amount, improve proportioning accuracy.

Description

Technical Field

[0001] This utility model belongs to the technical field of waterproof membrane production equipment, specifically, it relates to a batching and reaction equipment for producing waterproof membranes. Background Technology

[0002] In the production process of waterproof membranes (especially asphalt-based and polymer-based waterproof materials), it is usually necessary to add a large amount of powdered additives (such as mineral fillers talc powder and calcium carbonate, or polymer modifiers and flame retardants) in precise proportions to a high-temperature liquid base material (such as molten asphalt or organic solvent dispersion) for mixing and reaction. Current mainstream powder addition methods generally suffer from the following serious drawbacks: 1. Open-top feeding makes it difficult to control dust pollution at the source: Most production lines add powder by opening the top of the reaction tank or by throwing it from the side wall. When the powder falls freely into the tank under gravity, it is very easy to mix violently with the air to form a high-concentration explosive dust cloud, which poses a significant safety hazard. Open-top feeding will cause dust to spread, which will not only cause raw material loss and increase production costs, but also lead to the deterioration of the production environment and harm the respiratory health of operators.

[0003] 2. Low mixing efficiency and inaccurate proportioning: Because the density of powder is usually lower than that of liquid base material and it has adhesive properties, when added above the liquid surface, a large amount of powder will float on the surface, forming a "floating powder layer" that is difficult to wet. Meanwhile, a considerable proportion of powder adheres to the inner wall of the reaction vessel during its fall. This combination results in delayed wetting, requiring the floating powder to be slowly penetrated or mechanically entrained to fully mix with the liquid phase. Furthermore, powder adhesion leads to a significantly lower actual powder mass participating in the reaction than the set dosage (partially lost due to powder diffusion, and partially "attached" to the walls and not entering the reaction system), causing batch-to-batch composition fluctuations and decreased consistency in finished product performance. Therefore, to address the shortcomings of the existing technology, there is an urgent need for a batching and reaction equipment that can simultaneously achieve "physical isolation of powder from air," "rapid immersion into the liquid core," and "elimination of wall adhesion losses." Utility Model Content

[0004] The purpose of this invention is to provide a batching and reaction equipment for producing waterproof membranes, aiming to solve the problems of serious dust pollution, low mixing efficiency, and inaccurate proportioning in the existing technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A batching and reaction equipment for producing waterproof membrane includes a sealed reaction vessel and a stirring device installed inside the sealed reaction vessel. The equipment is characterized by further including a powder-to-liquid submersible addition device. The powder-to-liquid submersible addition device includes a feed pipe, the inlet end of which is connected to an external powder storage silo, and the outlet end of which extends into the sealed reaction vessel. The outlet end of the feed pipe is located below the batching liquid level in the sealed reaction vessel.

[0006] As a further preferred embodiment of this technical solution, the feed pipe includes an inclined section and a vertical section. The inlet of the inclined section is connected to an external powder storage bin, and the outlet of the inclined section is connected to the upper inlet of the vertical section. The vertical section penetrates the sealed reaction vessel, with the upper end of the vertical section located outside the sealed reaction vessel and the lower end of the vertical section extending below the feed liquid level of the sealed reaction vessel.

[0007] As a further preferred embodiment of this technical solution, a matching spiral feeder is also installed in the vertical section of the feed tube.

[0008] As a further preferred embodiment of this technical solution, the spiral feeder includes a spiral rod and spiral feed blades wound on the spiral rod. The upper end of the spiral rod passes through the feed tube and is connected to a drive motor. The upper end of the spiral feed blades corresponds to the connection between the inclined section and the vertical section, and the lower end of the spiral feed blades extends below the feed liquid level of the sealed reaction vessel.

[0009] As a further preferred embodiment of this technical solution, the vertical section of the guide tube is telescopic, comprising a fixed tube and a telescopic tube. The telescopic tube is slidably sleeved on the outside of the fixed tube, and the upper end of the telescopic tube is connected to an external telescopic motor via a connecting rod.

[0010] As a further preferred embodiment of this technical solution, a liquid level sensor is also included, which is installed on the inner wall of the sealed reaction vessel.

[0011] As a further preferred embodiment of this technical solution, the outlet of the feed pipe is a beveled surface, with its inclination direction facing the center of the sealed reaction vessel.

[0012] As a further preferred embodiment of this technical solution, the outer wall of the feed tube is coated with an antistatic coating, and an electrostatic grounding wire is also connected to the feed tube.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: By installing a feed pipe inside a sealed reaction tank and forcibly immersing the outlet of the feed pipe below the surface of the reaction liquid, the powder is completely isolated from contact with air from the moment it leaves the storage chamber until it enters the liquid system, thus completely eliminating the conditions for dust generation and solving the risk of dust explosion. At the same time, it enables a qualitative leap in the cleanliness of the production environment, effectively avoiding occupational health hazards and environmental pollution risks. The powder can be released directly inside the liquid phase, breaking through the inherent bottleneck of "powder floating - slow wetting or stirring and mixing" in traditional processes, achieving a transient wetting effect and improving the mixing reaction efficiency. The submerged conveying path completely avoids the phenomenon of powder diffusion and wall adhesion, which can significantly reduce the loss of powder during the feeding process, improve the consistency between the set feeding amount of powder and the amount participating in the reaction, and improve the accuracy of the proportioning. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a cross-sectional structural diagram of one embodiment of the present invention.

[0015] Among them, 1-sealed reaction vessel, 2-stirring device, 3-feed guide pipe, 31-inclined section, 32-vertical section, 321-fixed pipe, 322-telescopic pipe, 4-spiral rod, 5-spiral guide blade, 6-drive motor, 7-connecting rod, 8-telescopic motor, 9-liquid level sensor. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Example 1

[0018] like Figure 1The shown material preparation and reaction equipment for producing waterproof membrane includes a sealed reaction tank 1 and a stirring device 2 installed inside the sealed reaction tank 1. In this embodiment, the sealed reaction tank 1 includes a tank cover and a tank body. The tank body is cylindrical and open at the top. The tank cover is correspondingly placed on the upper opening of the tank body and connected by detachable bolts. A sealing device, such as a sealing ring, is provided at the connection. Since the sealing device is not the core innovation of this embodiment, its specific structure and installation method will not be described in detail here. However, it should be noted that those skilled in the art can easily obtain the specific implementation of the sealing device based on the prior art. The stirring device 2 includes a stirring shaft and spiral stirring blades. The spiral stirring blades are wound around the stirring shaft. The upper end of the stirring shaft passes through the tank cover and is connected to a stirring motor. The stirring device 2 is installed in the axial position of the sealed reaction tank 1.

[0019] The core innovation of this embodiment lies in the inclusion of a submerged powder feeding device. This device includes a feed pipe 3, the inlet of which connects to an external powder storage silo, and the outlet of which extends into the sealed reaction tank 1. The outlet of the feed pipe 3 is located below the mixing liquid level in the sealed reaction tank 1. The powder to be added is temporarily stored in the external powder storage silo, and the powder can be directionally conveyed through the feed pipe 3 to a level below the mixing liquid level in the sealed reaction tank 1, thereby achieving feeding. Since the powder is conveyed in a closed system within the feed pipe 3 throughout the entire process, it is completely isolated from contact with external air, thus completely eliminating dust generation. This technology addresses the risk of dust explosions and significantly improves the cleanliness of the production environment, effectively mitigating occupational health hazards and environmental pollution risks. Furthermore, the powder can be released directly into the liquid phase, overcoming the inherent bottleneck of traditional processes involving "powder floating - slow wetting or mixing," achieving a transient wetting effect and thus improving the mixing and reaction efficiency of each ingredient. More importantly, the submerged transport path completely avoids powder diffusion and wall adhesion, greatly reducing powder loss during feeding, effectively controlling production costs, and improving the consistency between the set powder feeding amount and the amount participating in the reaction, thereby increasing the accuracy of the proportioning.

[0020] Specifically, the feed pipe 3 includes an inclined section 31 and a vertical section 32. The inlet of the inclined section 31 is connected to an external powder storage bin, and the outlet of the inclined section 31 is connected to the upper inlet of the vertical section 32. The vertical section 32 penetrates the sealed reaction vessel 1, with the upper end of the vertical section 32 located outside the sealed reaction vessel 1 and the lower end of the vertical section 32 extending below the feed liquid level of the sealed reaction vessel 1.

[0021] It should be clarified that the inlet of the inclined section 31 is connected to the outlet of the powder storage bin. The inclined section 31 is designed so that the powder can slide freely to the vertical section 32 under its own gravity, and then fall below the feed liquid level of the sealed reaction tank 1 through the vertical section 32.

[0022] Example 2

[0023] This embodiment is a further supplement to Embodiment 1. In this embodiment, a matching spiral feeder is also installed in the vertical section 32 of the feed pipe 3. The function of the spiral feeder is to guide the powder to fall and avoid powder blockage; and to control the powder addition rate to avoid agglomeration.

[0024] Specifically, the spiral feeder includes a spiral rod 4 and spiral feed blades 5 wound on the spiral rod 4. The upper end of the spiral rod 4 passes through the feed pipe 3 and is connected to a drive motor 6. The upper end of the spiral feed blades 5 corresponds to the connection between the inclined section 31 and the vertical section 32. The lower end of the spiral feed blades 5 extends below the feed liquid surface of the sealed reaction tank 1. The outer diameter of the spiral feed blades 5 is adapted to the pipe diameter of the vertical section 32.

[0025] The working principle of the spiral feeder is as follows: the drive motor 6 is started, which drives the spiral rod 4 and the spiral feeder blades 5 to rotate. During the rotation of the spiral feeder blades 5, the powder that slides down from the inclined section 31 to the inlet of the vertical section 32 is gradually conveyed downward until it reaches below the feed liquid surface of the sealed reaction tank 1, and finally mixes with the liquid phase substances in the tank.

[0026] Example 3

[0027] This embodiment is a further supplement to Embodiment 2. In this embodiment, the vertical section 32 of the feed guide tube 3 is telescopic, including a fixed tube 321 and a telescopic tube 322. The telescopic tube 322 is slidably sleeved on the outside of the fixed tube 321. The upper end of the telescopic tube 322 is connected to an external telescopic motor 8 via a connecting rod 7. Through the reciprocating drive of the telescopic motor 8, the telescopic tube 322 can slide relative to the fixed tube 321, thereby adjusting the length of the vertical section 32 of the feed guide tube 3. This ensures that the lower end of the vertical section 32 of the feed guide tube 3 can extend below the liquid surface when different feeding requirements are met. It should be noted that the lower extension length of the spiral rod 4 and the spiral feed guide blade 5 should be adapted to the maximum extension stroke of the vertical section 32 of the feed guide tube 3.

[0028] In addition, this embodiment also includes a liquid level sensor 9, which is installed on the inner wall of the sealed reaction vessel 1. Specifically, the liquid level sensor 9 is installed on the lower surface of the vessel cover, and the current liquid level in the vessel is obtained by measuring the distance between it and the liquid surface.

[0029] This embodiment sets up a retractable feed tube 3 with a vertical section 32, which is linked with the liquid level sensor 9 to form a dynamic liquid level tracking system, thereby adapting to different feed quantity requirements.

[0030] Example 4

[0031] This embodiment is a further supplement to Embodiment 1. In this embodiment, the outlet of the feed pipe 3 is a beveled surface, with its inclination direction facing the center of the sealed reaction vessel 1, and the inclination angle is typically 30° to 45°. This design allows the powder to diffuse towards the strongly turbulent zone at the center of the sealed reaction vessel 1, facilitating rapid powder entrainment and thus improving the mixing efficiency between the powder and the existing liquid phase. This significantly shortens the reaction maturation cycle and also reduces the risk of powder agglomeration to some extent.

[0032] Example 5

[0033] This embodiment is a further supplement to Embodiment 1. In this embodiment, an antistatic coating is applied to the outer wall of the feed tube 3. The material of the antistatic coating is carbon fiber, and an electrostatic grounding wire is also connected to the feed tube 3. The antistatic coating is mainly used to eliminate the risk of static electricity accumulation. When the powder is conveyed in the feed tube 3, static voltage is generated between the powder particles and between the powder and the tube wall due to friction. Static discharge can ignite flammable dust, posing a safety hazard. Therefore, this embodiment reduces the surface resistance of the feed tube 3 by setting an antistatic coating with conductive properties, allowing the charge generated on its surface to flow smoothly. At the same time, the charge accumulated on the surface of the feed tube 3 is discharged through the electrostatic grounding wire to eliminate the influence of static electricity and improve work safety.

[0034] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A batching and reaction apparatus for producing waterproof membrane, comprising a sealed reaction vessel (1) and a stirring device (2) installed within the sealed reaction vessel (1), characterized in that, It also includes a powder submerged addition device, which includes a feed pipe (3). The inlet end of the feed pipe (3) is connected to an external powder storage silo, and the outlet end extends into a sealed reaction tank (1). The outlet end of the feed pipe (3) is located below the feed liquid level of the sealed reaction tank (1).

2. The batching and reaction equipment according to claim 1, characterized in that, The feed pipe (3) includes an inclined section (31) and a vertical section (32). The inlet of the inclined section (31) is connected to the external powder storage bin, and the outlet of the inclined section (31) is connected to the upper inlet of the vertical section (32). The vertical section (32) penetrates the sealed reaction vessel (1). The upper end of the vertical section (32) is located outside the sealed reaction vessel (1), and the lower end of the vertical section (32) extends below the feed liquid level of the sealed reaction vessel (1).

3. The batching and reaction equipment according to claim 2, characterized in that, A matching spiral feeder is also installed in the vertical section (32) of the feed tube (3).

4. The batching and reaction equipment according to claim 3, characterized in that, The spiral feeder includes a spiral rod (4) and spiral feed blades (5) wound on the spiral rod (4). The upper end of the spiral rod (4) passes through the feed tube (3) and is connected to a drive motor (6). The upper end of the spiral feed blades (5) corresponds to the connection between the inclined section (31) and the vertical section (32). The lower end of the spiral feed blades (5) extends below the feed liquid level of the sealed reaction vessel (1).

5. The batching and reaction equipment according to claim 1, characterized in that, The vertical section (32) of the guide tube (3) is telescopic, including a fixed tube (321) and a telescopic tube (322). The telescopic tube (322) is slidably sleeved on the outside of the fixed tube (321). The upper end of the telescopic tube (322) is connected to an external telescopic motor (8) through a connecting rod (7).

6. The batching and reaction equipment according to claim 5, characterized in that, It also includes a liquid level sensor (9), which is installed on the inner wall of the sealed reaction vessel (1).

7. The batching and reaction equipment according to claim 1, characterized in that, The outlet of the feed pipe (3) is a beveled surface, and its inclined direction is toward the center of the sealed reaction vessel (1).

8. The batching and reaction equipment according to claim 1, characterized in that, The outer wall of the feed tube (3) is covered with an antistatic coating, and an electrostatic grounding wire is also connected to the feed tube (3).

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