Air-conveying, feeding and mixing device for premix of waterproof roll additive

By using a combination of a suction fan and a sealing plate in the pneumatic conveying and mixing device for waterproof membrane additive premixes, the problem of dust pollution in the pneumatic conveying system is solved, achieving clean production and efficient mixing.

CN223474944UActive Publication Date: 2025-10-28WEIFANG DONGSHENG WATERPROOF MATERIAL CO LTD
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Patent Information

Application Number
CN202423024998.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-09
Publication Date
2025-10-28
Estimated Expiration
2034-12-09

AI Technical Summary

Technical Problem

In existing technologies, when pneumatic conveying systems transport raw materials to mixing equipment, a large amount of dust is generated at the feed inlet, polluting the air and endangering the health of workers.

Method used

A premixed material additive for waterproof membrane was designed with a pneumatic feeding and mixing device. It adopts a dust prevention mechanism consisting of a suction fan and a closed plate. The device prevents dust from scattering by drawing in air under negative pressure and circulating airflow inside the closed plate. At the same time, a cleaning mechanism is set up to clean the residue on the inner wall of the mixing tank.

Benefits of technology

It effectively prevents dust from scattering, protects air quality and the health of workers, and ensures the cleanliness of the mixing tank's inner wall, thereby improving mixing efficiency and equipment stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a waterproof coiled material additive premix pneumatic feeding mixing device, which belongs to the technical field of mixing devices, and comprises a mixing tank and a dustproof mechanism, the mixing tank is connected with a feed pipe, the dustproof mechanism comprises a suction fan, the suction fan is fixedly installed outside the mixing tank, the air inlet end of the suction fan is fixedly connected with a pipeline, and the air inlet end of the suction fan is fixedly connected with the feed pipe. And the air outlet end of the suction fan is fixedly connected with an exhaust pipe. The suction fan is fixedly mounted on the outer surface of the mixing tank, air in the mixing tank is sucked out through the suction fan, air pressure in the mixing tank is reduced, negative pressure with a certain vacuum degree is formed, dust can be sucked into the mixing tank under the action of the negative pressure and cannot fly out, and in order to improve the dust prevention effect, the dust prevention effect is improved. And a sealing plate is arranged in the feeding pipe, and gas sucked out of the mixing tank is introduced into the mixing tank again, so that dust is blown into the mixing tank, and the feeding dustproof effect is improved.
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Description

Technical Field

[0001] This utility model relates to the field of mixing device technology, and more specifically, to a pneumatic conveying and mixing device for waterproof membrane additive premix. Background Technology

[0002] Currently, pneumatic conveying systems are commonly used for feeding granular or powdery raw materials. This method saves time and effort. Pneumatic conveying systems generate airflow through fans and use pipelines to transport materials from the starting point to the destination. It is a common material conveying method and is widely used in industrial production and material handling processes. The pneumatic conveying system transports the mixed materials to the target location.

[0003] The raw material is conveyed by inverting it into the inside of the conveying pipe. One end of the conveying pipe is equipped with a pneumatic conveying device, which blows the raw material into the mixing equipment so that it can be mixed and processed by the mixing equipment.

[0004] While a pneumatic conveying system can quickly transport raw materials to the mixing equipment, the fact that the raw materials are blown by the wind generates a large amount of dust at the feed inlet of the mixing equipment. This dust continuously drifts out from the feed inlet, covering the processing equipment and its surroundings with dust, polluting the air and affecting workers. Therefore, we propose a pneumatic conveying and mixing device for waterproof membrane additive premixes to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a pneumatic conveying and mixing device for waterproof membrane additive premixes that overcomes or at least partially solves the above technical problems.

[0006] This utility model is implemented as follows:

[0007] This utility model provides a pneumatic feeding and mixing device for waterproof membrane additive premix, including a mixing tank. A feed pipe is fixedly connected to one side of the mixing tank. A cleaning mechanism is provided inside the mixing tank. The cleaning mechanism includes an annular frame, a cleaning brush, and a linkage sleeve. The linkage sleeve is rotatably mounted on the outer surface of an agitator shaft. The annular frame is fixedly connected to the outer surface of the linkage sleeve. The cleaning brush is fixedly connected to the outer surface of the annular frame. An annular plate is fixedly connected to the inner side of the annular frame. A rectangular plate is fixedly connected to the outer surface of the annular plate. The position of the annular plate corresponds to that of the feed pipe.

[0008] Dustproof mechanism, the dustproof mechanism includes;

[0009] A suction fan is fixedly installed at the upper part of the outer surface of the mixing tank, and the air inlet end of the suction fan is fixedly connected to a pipe.

[0010] A closed plate is provided, wherein the air outlet end of the suction fan is fixedly connected to an exhaust pipe, one end of the exhaust pipe is fixedly connected to the closed plate, and an air outlet is provided on one side of the closed plate.

[0011] A sealing plug is disposed inside the sealing plate, and a sealing ring is fixedly connected to the outer surface of the sealing plate.

[0012] In a preferred embodiment, a support rod is installed at the bottom of the mixing tank, the bottom of the support rod is fixedly connected to a base plate, the bottom of the mixing tank is connected to a discharge pipe, and an external control device is installed on the discharge pipe.

[0013] In a preferred embodiment, a feeding blower is bolted to the upper surface of the base plate, the output end of the feeding blower is fixedly connected to a conveying pipe, the outer surface of the conveying pipe is fixed and connected to the feed hopper, one end of the conveying pipe passes through the interior of the feed pipe and is located inside the mixing tank.

[0014] In a preferred embodiment, the sealing plug is snapped onto the outside of the delivery pipe and fits tightly against the outer surface of the delivery pipe. The sealing plate is configured in an annular shape with a hollow interior. The outer surface of the sealing plug is snapped onto the inner side of the sealing plate and fits tightly against the inner surface of the sealing plate.

[0015] In a preferred embodiment, a drive motor is fixedly connected to the top of the mixing tank, an agitator shaft is fixedly connected to the output end of the drive motor, and an agitator rod is fixedly connected to the outer surface of the agitator shaft.

[0016] The beneficial effects of the waterproof membrane additive premix pneumatic feeding and mixing device provided by this utility model include:

[0017] 1. By fixing a suction fan to the outer surface of the mixing tank, the gas inside the mixing tank is sucked out, reducing the air pressure inside the mixing tank. This prevents the raw materials at the feed pipe from flying out. Dust will be sucked into the mixing tank under negative pressure and will not fly out, thus avoiding air pollution and preventing harm to workers. To improve the dust prevention effect, a sealing plate is installed inside the feed pipe, allowing the gas sucked out of the mixing tank to be reintroduced into the mixing tank, thereby blowing dust into the mixing tank and improving the dust prevention effect of feeding, meeting the usage requirements.

[0018] 2. A linkage sleeve is rotatably installed on the outer surface of the stirring shaft. An annular frame is fixedly connected to the outer surface of the linkage sleeve. A cleaning brush is fixedly installed on the outer surface of the annular frame. At the same time, an annular plate is installed inside the annular frame. A rectangular plate is installed on the outer surface of the annular plate. Air is blown into the mixing tank through the sealing plate, which moves the rectangular plate and drives the annular plate to rotate. This drives the annular frame to rotate, thereby driving the cleaning brush to clean the inner wall of the mixing tank and discharge all the raw materials inside the mixing tank. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the air outlet structure of the suction fan of this utility model.

[0022] Figure 3 This is a schematic diagram of the closed plate structure of this utility model.

[0023] Figure 4 This is a schematic diagram of one side of the closed plate of this utility model.

[0024] Figure 5 This is a schematic diagram of the internal structure of the mixing tank of this utility model.

[0025] Figure 6 This is a schematic diagram of the pipeline location of this utility model.

[0026] In the diagram: 1. Mixing tank; 2. Feed pipe; 3. Dustproof mechanism; 31. Fan; 311. Pipe; 32. Sealing plate; 321. Exhaust pipe; 322. Vent; 33. Sealing plug; 331. Sealing ring; 4. Support rod; 5. Base plate; 6. Discharge pipe; 7. Control valve; 8. Feeding fan; 9. Conveying pipe; 10. Feed hopper; 11. Agitator shaft; 12. Agitator rod; 13. Cleaning mechanism; 131. Ring frame; 132. Cleaning brush; 133. Linkage sleeve; 14. Ring plate; 15. Rectangular plate; 16. Drive motor. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] Example: Refer to Figures 1-6This utility model provides a technical solution: a pneumatic feeding and mixing device for waterproof membrane additive premix, including a mixing tank 1 and a dustproof mechanism 3. A feeding pipe 2 is fixedly connected to one side of the mixing tank 1. The dustproof mechanism 3 includes a suction fan 31, which is fixedly installed at the upper end of the outer surface of the mixing tank 1. The air inlet end of the suction fan 31 is fixedly connected to a pipe 311, and the air outlet end of the suction fan 31 is fixedly connected to an exhaust pipe 321. One end of the exhaust pipe 321 is fixedly connected to a sealing plate 32. An air outlet 322 is opened on one side of the sealing plate 32. A sealing plug 33 is disposed inside the sealing plate 32, and a sealing ring 331 is fixedly connected to the outer surface of the sealing plate 32.

[0029] In a preferred embodiment, a support rod 4 is installed at the bottom of the mixing tank 1, and the bottom of the support rod 4 is fixedly connected to the base plate 5. The bottom of the mixing tank 1 is connected to the discharge pipe 6, and a control valve 7 is installed on the outside of the discharge pipe 6. To ensure the stable use of the mixing tank 1, the mixing tank 1 is installed on the upper surface of the base plate 5. At the same time, a feeding fan 8 is installed on the upper surface of the base plate 5 by bolts. The output end of the feeding fan 8 is fixedly connected to the conveying pipe 9. The outer surface of the conveying pipe 9 is fixed and connected to the feed hopper 10. One end of the conveying pipe 9 passes through the inside of the feed pipe 2 and is set inside the mixing tank 1. When feeding raw materials, the feeding fan 8 is turned on, which blows the raw materials directly into the interior of the mixing tank 1, thereby ensuring the stable use of the entire device.

[0030] In a preferred embodiment, the sealing plug 33 is snapped onto the outside of the conveying pipe 9 and fits tightly against the outer surface of the conveying pipe 9. The sealing plate 32 is annular in shape and hollow inside. The outer surface of the sealing plug 33 is snapped onto the inner side of the sealing plate 32 and fits tightly against the inner side of the sealing plate 32. In order to adapt to the stable use of conveying pipes 9 with different diameters, a removable sealing ring 331 is provided on the inner side of the sealing plate 32. According to the diameter of different conveying pipes 9, a suitable sealing plug 33 is selected and snapped onto the inner side of the sealing plate 32. At the same time, the sealing ring 331 is installed on the outer surface of the sealing plate 32, which can prevent dust from flying out from the feed pipe 2.

[0031] This device is used to mix raw materials. Therefore, a drive motor 16 is fixedly connected to the top of the mixing tank 1. The output end of the drive motor 16 is fixedly connected to the stirring shaft 11. The outer surface of the stirring shaft 11 is fixedly connected to the stirring rod 12. By driving the stirring shaft 11 to rotate through the drive motor 16, the stirring rod 12 can be controlled to stir the raw materials, thereby mixing multiple raw materials together.

[0032] The raw materials are continuously agitated inside the mixing tank 1. After unloading, some raw materials will still adhere to the inner wall of the mixing tank 1. To avoid waste of raw materials and ensure normal use of the mixing tank 1 in the future, a cleaning mechanism 13 is set inside the mixing tank 1. The cleaning mechanism 13 includes an annular frame 131, a cleaning brush 132, and a connecting sleeve 133. The connecting sleeve 133 is rotatably mounted on the outer surface of the agitator shaft 11. The annular frame 131 is fixedly connected to the outer surface of the connecting sleeve 133. The cleaning brush 132 is fixedly connected to the outer surface of the annular frame 131. An annular plate 14 is fixedly connected to the inner side of the annular frame 131. A rectangular plate 15 is fixedly connected to the outer surface of the annular plate 14. The shape plate 14 corresponds to the position of the feed pipe 2. In actual use, a linkage sleeve 133 is rotatably installed on the outer surface of the stirring shaft 11. The outer surface of the linkage sleeve 133 is fixedly connected to the annular frame 131. A cleaning brush 132 is fixedly installed on the outer surface of the annular frame 131. At the same time, an annular plate 14 is installed inside the annular frame 131. A rectangular plate 15 is installed on the outer surface of the annular plate 14. Air is blown into the mixing tank 1 through the sealing plate 32 and blown onto the rectangular plate 15, causing the rectangular plate 15 to move and drive the annular plate 14 to rotate, thereby driving the annular frame 131 to rotate. This drives the cleaning brush 132 to clean the inner wall of the mixing tank 1 and discharge all the raw materials inside the mixing tank 1.

[0033] Specifically, the working process or principle of the premixed waterproof membrane additive pneumatic feeding and mixing device is as follows: Although the pneumatic system can quickly transport the raw materials to the mixing equipment, a large amount of dust will be generated at the feed inlet of the mixing equipment because the raw materials are blown by the wind. The dust will continuously drift out from the feed inlet, making the processing equipment and the surrounding area dusty, which not only pollutes the air but also affects the workers. Therefore, this device was designed to solve this problem. The specific operation is as follows: connect the external power supply and turn on the suction fan 31 and drive motor 16. Then, pour the raw materials into the feed hopper 10. The raw materials will enter the conveying pipe 9. At the same time, turn on the feeding fan 8. The feeding fan 8 blows the raw materials inside the conveying pipe 9, which will blow the raw materials into the mixing tank 1 through the conveying pipe 9. Under the rotation of the stirring shaft 11, the raw materials can be stirred.

[0034] To facilitate the installation of conveying pipes 9 of different diameters inside the feed pipe 2, when installing the conveying pipe 9 inside the feed pipe 2, first, the sealing plug 33 is snapped onto the outer surface of the conveying pipe 9. According to the diameter of the conveying pipe 9, a suitable sealing plug 33 is selected. Then, the sealing plug 33 is snapped onto the inside of the sealing plate 32. Finally, the sealing plate 32 is snapped onto the inside of the feed pipe 2 to ensure stable use of the conveying pipe 9 and to convey the raw materials into the mixing tank 1.

[0035] To prevent dust from being generated when raw materials enter the mixing tank 1 and scattered everywhere, which would not only affect the air quality but also harm workers, a suction fan 31 is used to draw air out of the mixing tank 1 during raw material feeding. This lowers the air pressure inside the mixing tank 1 compared to the outside air pressure, causing dust to be drawn into the mixing tank 1 under negative pressure, effectively preventing dust from scattering. To further enhance the dust prevention effect, a sealing plate 32 is installed inside the feed pipe 2. The sealing plate 32 is hollow, and several air outlets 322 are provided on one side of the sealing plate 32. Air is delivered into the sealing plate 32 by the suction fan 31 and then discharged from the air outlets 322, blowing the dust into the mixing tank 1, effectively preventing dust from scattering and affecting the air quality, while also protecting workers.

[0036] Then, following the above method, various raw materials are transported into the mixing tank 1. The drive motor 16 controls the rotation of the stirring shaft 11, which in turn drives the stirring rod 12 to rotate, thus mixing and processing the raw materials. After processing, the discharge pipe 6 is opened to discharge the mixture. To keep the inside of the mixing tank 1 clean and to discharge all the raw materials, after unloading, the device continues to control the suction fan 31 to work. By blowing on the annular plate 14, the annular plate 14 rotates, which in turn drives the annular frame 131 to rotate. This controls the cleaning brush 132 to clean the inner wall of the mixing tank 1, removing the raw materials adhering to the inner wall of the mixing tank 1, keeping the inside of the mixing tank 1 clean, and discharging all the raw materials for later use.

[0037] It should be noted that the suction fan 31, the drive motor 16 and the feeding fan 8 are existing devices or equipment, or devices or equipment that can be implemented by existing technology. Their power supply, specific composition and principle are clear to those skilled in the art, so they will not be described in detail.

Claims

1. A pneumatic conveying and mixing device for waterproof membrane additive premix, characterized in that, Includes a mixing tank (1), and a feed pipe (2) is fixedly connected to one side of the mixing tank (1); Dustproof mechanism (3), the dustproof mechanism (3) includes; A suction fan (31) is fixedly installed on the upper part of the outer surface of the mixing tank (1), and the air inlet end of the suction fan (31) is fixedly connected to a pipe (311). The air outlet of the fan (31) is fixedly connected to the air exhaust pipe (321), and one end of the air exhaust pipe (321) is fixedly connected to the air outlet of the air outlet pipe (321). An air outlet hole (322) is opened on one side of the air outlet plate (32). A sealing plug (33) is disposed inside a sealing plate (32), and a sealing ring (331) is fixedly connected to the outer surface of the sealing plate (32).

2. The pneumatic conveying and mixing device for waterproof membrane additive premix according to claim 1, characterized in that, A support rod (4) is installed at the bottom of the mixing tank (1), and a base plate (5) is fixedly connected to the bottom of the support rod (4). The bottom of the mixing tank (1) is connected to the discharge pipe (6), and a control valve (7) is installed on the outside of the discharge pipe (6).

3. The pneumatic conveying and mixing device for waterproof membrane additive premix according to claim 2, characterized in that, The upper surface of the base plate (5) is bolted to a feeding fan (8), the output end of the feeding fan (8) is fixedly connected to a conveying pipe (9), the outer surface of the conveying pipe (9) is fixed and connected to the feed hopper (10), one end of the conveying pipe (9) passes through the inside of the feed pipe (2) and is set inside the mixing tank (1).

4. The pneumatic conveying and mixing device for waterproof membrane additive premix according to claim 3, characterized in that, The sealing plug (33) is snapped onto the outside of the conveying pipe (9) and fits tightly against the outer surface of the conveying pipe (9). The sealing plate (32) is set in an annular shape and its interior is hollow. The outer surface of the sealing plug (33) is snapped onto the inner side of the sealing plate (32) and fits tightly against the inner side of the sealing plate (32).

5. The pneumatic conveying and mixing device for waterproof membrane additive premix according to claim 1, characterized in that, A drive motor (16) is fixedly connected to the top of the mixing tank (1), and an agitator shaft (11) is fixedly connected to the output end of the drive motor (16). An agitator rod (12) is fixedly connected to the outer surface of the agitator shaft (11).

6. The pneumatic conveying and mixing device for waterproof membrane additive premix according to any one of claims 1 to 5, characterized in that, The mixing tank (1) is equipped with a cleaning mechanism (13), which includes a ring frame (131), a cleaning brush (132), and a linkage sleeve (133).

7. The pneumatic conveying and mixing device for waterproof membrane additive premix according to claim 6, characterized in that, The linkage sleeve (133) is rotatably mounted on the outer surface of the agitator shaft (11), and the outer surface of the linkage sleeve (133) is fixedly connected to the annular frame (131), and the outer surface of the annular frame (131) is fixedly connected to the cleaning brush (132).

8. The pneumatic conveying and mixing device for waterproof membrane additive premix according to claim 7, characterized in that, The inner side of the ring frame (131) is fixedly connected to the ring plate (14), and the outer surface of the ring plate (14) is fixedly connected to the rectangular plate (15). The position of the ring plate (14) corresponds to that of the feed pipe (2).