Subsurface feeding stirring system and subsurface feeding device

Abstract

The utility model relates to an under-liquid feeding and stirring system and an under-liquid feeding device. The under-liquid feeding and stirring system comprises a stirring device and the under-liquid feeding device positioned in the stirring device, the under-liquid feeding device comprises a flow guide pipe, a feeding pipe and a discharging pipe; a rotating shaft and a rotating paddle arranged on the rotating shaft are arranged in the flow guide pipe; the flow guide pipe is divided into a stirring area and a blowing area; the feeding pipe is located on the side wall of the stirring area, forms an acute included angle with the horizontal direction and is communicated with the flow guide pipe, and powder enters the flow guide pipe through the feeding pipe; the discharge pipe is positioned right below the flow guide pipe; a blowing pipe is arranged in the blowing area, the discharging pipe is provided with a discharging port, the discharging port of the discharging pipe is located below the liquid level of the liquid material in the stirring device, and the blowing pipe is used for blowing the powder conveyed by the flow guide pipe to the discharging pipe for discharging so as to prevent the powder from being blocked or bonded in the discharging pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of submerged feeding devices, in particular to a submerged feeding stirring system and a submerged feeding device. Background Art

[0002] The batching production process of modified asphalt coating for waterproofing membrane is to add the modifier after hot asphalt is injected into the batching tank, and the powder is physically modified and dispersed by colloid mill and high-speed stirring. During the preparation process, modified rubber powder and stone powder with fine mesh can be added by submerged spiral feeding. However, since both rubber powder and stone powder have certain adhesion and contain a small amount of water, the uneven feeding rate causes the powder to be unevenly dispersed in the liquid asphalt, and the modification effect is poor. At the same time, the powder is easy to adhere to the wall of the feeding pipe during the addition process, and the asphalt will volatilize smoke under high temperature and adhere to the pipe wall. Over time, the discharge port will be blocked, seriously affecting the quality of the modified asphalt membrane product.

[0003] CN204247127U discloses an asphalt stirring device using an underwater feeding method, which includes: a tank body, a stirring shaft vertically arranged in the tank body, an environmentally friendly negative pressure collection pipe tightly connected to the top of the tank body, a feeding pipe penetrating the tank body and extending below the liquid asphalt surface line, a feeding screw arranged in the feeding pipe; a motor tightly connected to one end of the feeding pipe located outside the tank body for driving the feeding screw, and a powder material addition port arranged on the tube wall of the feeding pipe located outside the tank body. Firstly, a negative pressure state needs to be maintained inside the device, so strict requirements are placed on the sealing of the entire device, which is difficult to achieve in existing ordinary modified asphalt production lines; secondly, the lower end of the spiral shaft of the feeding spiral of the feeding pipe is fastened to a dispersion disk, the purpose of the dispersion disk is to disperse the powdered material transported into the liquid asphalt, but there is a large angle between the directions of rotation of the spiral shaft and the stirring shaft, and the two will generate mutual resistance, which is not conducive to the dispersion of the powdered material in the liquid asphalt, further affecting the quality of the modified asphalt, and also reducing the service life of the stirring device.

[0004] CN214881290U discloses a submersible feeding device, including a power output device, a screw conveying device, and a breakage device; the power output device is composed of a motor reducer and a reducer base fixedly connected to the motor reducer; the screw conveying device is composed of a main shaft, a spiral blade welded on the surface of the main shaft, and a cylinder arranged outside the main shaft and the spiral blade, and the main shaft is fixed to the end of the output shaft of the motor reducer, and the cylinder is fixedly connected to the reducer base; the side surface of the lower end of the cylinder is provided with a bottom fan-shaped outlet and a U-shaped side outlet. In the actual use process, the opening structure of the cylinder in this technical solution may cause powder to be blocked at the intersection of the arc edge and the radius edge in the fan-shaped outlet structure, or at the reverse side of the U-shaped side outlet. The material jamming caused by the two discharge port structures will cause the powder to clump and adhere at the outlet, thereby accelerating the blockage of the discharge port.

[0005] Based on the above-mentioned prior art, there are still technical problems that need to be solved urgently, such as low coordination between the submerged feeding device and the stirring device, and blockage of the discharge port caused by material clogging or adhesion. Utility Model Content

[0006] In order to solve the above-mentioned technical problems, the utility model provides a submerged feeding and stirring system, comprising a stirring device and a submerged feeding device located in the stirring device;

[0007] The submersible feeding device comprises a guide pipe, a feed pipe and a discharge pipe; the guide pipe comprises a rotating shaft and a rotating paddle arranged on the rotating shaft;

[0008] The guide pipe is divided into a stirring zone and a blowing zone; the feed pipe is located on the side wall of the stirring zone and is at an acute angle to the horizontal direction and is connected to the guide pipe, and the powder enters the guide pipe through the feed pipe; the discharge pipe is located directly below the guide pipe;

[0009] An air blowing pipe is provided in the blowing area, and the discharge pipe is provided with a discharge port. The discharge port of the discharge pipe is located below the liquid level of the liquid material in the stirring device. The air blowing pipe is used to blow the powder transported by the guide pipe to the discharge pipe for discharge, so as to prevent the powder from being blocked or bonded in the discharge pipe.

[0010] Furthermore, the length of the rotating shaft is the sum of the lengths of the guide pipe and the discharge pipe, and the length of the rotating paddle is equal to the length of the stirring zone.

[0011] Furthermore, the blowing pipe comprises a first blowing pipe and a second blowing pipe. The first blowing pipe is provided at one end of the blowing zone close to the stirring zone, and the second blowing pipe is provided at one end away from the stirring zone.

[0012] Further, the side wall of the first blowing pipe forms an angle of 30-60° with the side wall of the blowing zone in the guide pipe, the side wall of the first blowing pipe is a hollow conical structure, having a first large diameter end close to the stirring zone and a first small diameter end away from the stirring zone, the first small diameter end is provided with a first blowing port, and the opening direction of the first blowing port is toward the discharge pipe;

[0013] The first blowing port blows the powder entering the blowing zone from the stirring zone to the discharge pipe for discharge. The conical structure makes the powder discharge more uniform and reduces the contact between the powder and the inner wall of the discharge pipe to prevent adhesion and blockage.

[0014] Further, the side wall of the second air blowing pipe forms an angle of 30-60° with the side wall of the blowing zone in the guide pipe, the side wall of the second air blowing pipe is a hollow conical structure, having a second large diameter end close to the stirring zone and a second small diameter end away from the stirring zone, the second large diameter end is provided with a second air blowing port, and the opening direction of the second air blowing port is toward the guide pipe;

[0015] The second air blowing port is used to blow away the powder adhering to the angle between the side wall of the first air blowing pipe and the side wall of the blowing area, so as to prevent the powder from adhering and clogging, reduce the frequency of cleaning the underwater feeding device and extend the service life of the underwater feeding device.

[0016] Furthermore, the first blowing port is a circular blowing port along the circumference of the first small diameter end.

[0017] Furthermore, the second blowing port is a circular blowing port along the circumference of the second large diameter section.

[0018] Furthermore, the first air blowing pipe and the second air blowing pipe are connected to an air source, and the air source is used to provide gas to blow the powder.

[0019] Further, the diameters of the first large-diameter end and the second large-diameter end are the same, and the diameters of the first small-diameter end and the second small-diameter end are the same.

[0020] Furthermore, an anti-blocking scraper and a nano anti-sticking layer located on the inner wall of the discharge pipe are provided in the discharge pipe, and the anti-blocking scraper includes a crossbeam and a plurality of scrapers located on the crossbeam; the crossbeam is located at one end of the rotating shaft close to the discharge port and is arranged perpendicular to the rotating shaft;

[0021] The anti-blocking scraper can effectively remove the powder blocked in the discharge pipe to ensure the smooth flow of the discharge pipe;

[0022] The crossbeam enables the scraper to be stably fixed, and the periodic movement of the scraper is achieved through the rotation of the rotating shaft. The crossbeam is located close to the discharge port to ensure that the scraper continuously cleans the inner wall of the discharge pipe during the powder discharge process;

[0023] The scraper is made of wear-resistant material, and as the rotating shaft rotates, the scraper scrapes away the powder adhered to the inner wall of the discharge pipe, thereby extending the service life of the scraper;

[0024] The nano anti-sticking layer is used to reduce the adhesion of powder on the nano anti-sticking layer, and further reduce the clogging and adhesion of powder.

[0025] Furthermore, the scraper is a long steel scraper.

[0026] Furthermore, the thickness of the nano anti-adhesion layer is 50-800 nm.

[0027] Furthermore, the stirring device includes a stirring tank, a stirring shaft and a stirring paddle located on the stirring shaft.

[0028] Furthermore, the rotating shaft is driven by a first motor, and the stirring shaft is driven by a second motor.

[0029] Furthermore, the rotating shaft and the stirring shaft are parallel to each other, and the rotating directions of the rotating shaft and the stirring shaft are consistent, so as to ensure that the powder can be smoothly mixed into the liquid material in the stirring direction of the stirring device after being blown out from the underwater feeding device, so as to achieve the purpose of rapid mixing.

[0030] Furthermore, the rotating paddles are spirally distributed dragon blades to reduce the resistance of the powder during transportation and reduce the possibility of blockage during transportation of the powder.

[0031] Furthermore, the guide pipe and the discharge pipe are integrated cylindrical pipes, or the guide pipe and the discharge pipe are connected with a flange, which is convenient for disassembly, assembly and replacement without changing the structure of the guide pipe.

[0032] Furthermore, the discharge port is a circular discharge port, and its cross-sectional area is the same as the cross-sectional area of ​​the discharge pipe to ensure the discharge speed of the powder.

[0033] The utility model also provides a submerged feeding device, which is the submerged feeding device in the above-mentioned submerged feeding and stirring system.

[0034] The beneficial effects of the utility model are:

[0035] The utility model relates to a submerged feeding stirring system and a submerged feeding device, comprising a stirring device and a submerged feeding device located in the stirring device; the submerged feeding device comprises a guide pipe, a feed pipe and a discharge pipe; the guide pipe comprises a rotating shaft and a rotating paddle arranged on the rotating shaft; the guide pipe is divided into a stirring zone and a blowing zone; the feed pipe is located on a side wall of the stirring zone and forms an acute angle with the horizontal direction and is connected with the guide pipe, and powder enters the guide pipe through the feed pipe; the discharge pipe is located directly below the guide pipe; an air blowing pipe is provided in the blowing zone, and the discharge pipe is provided with a discharge port, the discharge port of the discharge pipe is located below the liquid surface of the liquid material in the stirring device, and the air blowing pipe is used for blowing the powder transported by the guide pipe to the discharge pipe for discharge, so as to prevent the powder from being blocked or bonded in the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0037] Figure 1 This is a structural schematic diagram of the submerged feeding and stirring system of the utility model;

[0038] Figure 2 This is a schematic diagram of the structure of the submerged feeding device of the utility model;

[0039] The numbers in the figure are:

[0040] 1. Stirring device; 11. Stirring tank; 12. Stirring shaft; 13. Stirring paddle; 14. Second motor; 2. Submerged feeding device; 21. Flow guide pipe; 211. Rotating shaft; 212. Rotating paddle; 22. Feed pipe; 23. Discharge pipe; 231. Discharge port; 232. Nano anti-sticking layer; 233. Crossbeam; 234. Scraper; 24. Air blowing pipe; 241. First air blowing pipe; 2411. First air blowing port; 242. Second air blowing pipe; 2421. Second air blowing port; 25. First motor; 26. Flange. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0042] It should be noted that the term "comprising" in the specification and claims of this application and the above-mentioned drawings is intended to cover non-exclusive inclusions. In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated components to have specific orientations. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances.

[0043] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0044] like Figure 1-2 As shown, this embodiment provides a submerged feeding stirring system, comprising a stirring device 1 and a submerged feeding device 2 located in the stirring device 1;

[0045] The submersible feeding device 2 includes a guide pipe 21, a feed pipe 22 and a discharge pipe 23; the guide pipe 21 includes a rotating shaft 211 and a rotating paddle 212 arranged on the rotating shaft 211;

[0046] The guide pipe 21 is divided into a stirring zone and a blowing zone; the feed pipe 22 is located on the side wall of the stirring zone and forms an acute angle with the horizontal direction ( Figure 2 The angle is α in the middle) and is connected to the guide tube 21, and the powder enters the guide tube 21 through the feed tube 22; the discharge tube 23 is located directly below the guide tube 21;

[0047] The blowing area is provided with a blowing pipe 24, and the discharge pipe 23 is provided with a discharge port 231. Figure 1 As shown, the discharge port 231 of the discharge pipe 23 is located below the liquid material level in the stirring device 1, and the blowing pipe 24 is used to blow the powder transported by the guide pipe 21 to the discharge pipe 23 for discharge to prevent the powder from being blocked or bonded in the discharge pipe 23.

[0048] The length of the rotating shaft 211 is the sum of the lengths of the flow guide pipe 21 and the discharge pipe 23 , and the length of the rotating paddle 212 is equal to the length of the stirring zone.

[0049] In this embodiment, the blowing pipe 24 includes a first blowing pipe 241 and a second blowing pipe 242. The first blowing pipe 241 is provided at one end of the blowing zone close to the stirring zone, and the second blowing pipe 242 is provided at one end away from the stirring zone.

[0050] like Figure 2As shown, the side wall of the first blowing pipe 241 forms an angle of 45° with the side wall of the blowing zone in the guide pipe 21. The side wall of the first blowing pipe 241 is a hollow conical structure, having a first large diameter end close to the stirring zone and a first small diameter end away from the stirring zone. The first small diameter end is provided with a first blowing port 2411. Figure 2 As shown, the opening direction of the first blowing port 2411 is toward the discharge pipe 23, and blows air in this direction;

[0051] The first blowing port 2411 blows the powder entering the blowing zone from the stirring zone to the discharge pipe 23 for discharge. The conical structure makes the powder discharge more uniform and reduces the contact between the powder and the inner wall of the discharge pipe 23 to prevent adhesion and blockage.

[0052] The side wall of the second blowing pipe 242 forms an angle of 45° with the side wall of the blowing zone in the guide pipe 21. The side wall of the second blowing pipe 242 is a hollow conical structure, having a second large diameter end close to the stirring zone and a second small diameter end away from the stirring zone. The second large diameter end is provided with a second blowing port 2421. Figure 2 As shown, the opening direction of the second blowing port 2421 is toward the flow guide pipe 21, and blows air in this direction;

[0053] The second air outlet 2421 is used to blow away the powder adhering to the angle between the side wall of the first air blowing pipe 241 and the side wall of the blowing area, to prevent the powder from adhering and clogging, reduce the frequency of cleaning the underwater feeding device 2 and extend the service life of the underwater feeding device 2.

[0054] The first blowing port 2411 is a circular blowing port along the circumference of the first small diameter end.

[0055] The second blowing port 2421 is a circular blowing port along the circumference of the second large diameter segment.

[0056] The first air blowing pipe 241 and the second air blowing pipe 242 are connected to an air source, and the air source is used to provide gas to blow the powder. In this embodiment, the air source is air. In some embodiments, the air source can also be an inert gas, which mainly plays the role of air supply, and is not specifically limited here.

[0057] The first large-diameter end and the second large-diameter end have the same diameter, and the first small-diameter end and the second small-diameter end have the same diameter.

[0058] In this embodiment, an anti-blocking scraper and a nano anti-sticking layer 232 located on the inner wall of the discharge pipe 23 are provided in the discharge pipe 23, and the anti-blocking scraper includes a crossbeam 233 and two scrapers 234 located on the crossbeam 233, and the two scrapers 234 are arranged opposite to each other; the crossbeam 233 is located at one end of the rotating shaft 211 close to the discharge port 231, and is arranged perpendicular to the rotating shaft 211;

[0059] The anti-blocking scraper can effectively remove the powder blocked in the discharge pipe 23 to ensure the unobstructed flow of the discharge pipe 23;

[0060] The crossbeam 233 enables the scraper 234 to be stably fixed, and the periodic movement of the scraper 234 is achieved through the rotation of the rotating shaft 211. The crossbeam 233 is located close to the discharge port 231 to ensure that the scraper 234 continuously cleans the inner wall of the discharge pipe 23 during the powder discharge process.

[0061] The scraper 234 is made of a wear-resistant material. In this embodiment, the scraper 234 is a long steel scraper. As the rotating shaft 211 rotates, the scraper 234 scrapes away the powder adhered to the inner wall of the discharge pipe 23 and prolongs the service life of the scraper 234.

[0062] The nano anti-adhesion layer 232 is used to reduce the adhesion of the powder on the nano anti-adhesion layer 232, and further reduce the clogging and adhesion of the powder. In this embodiment, the thickness of the nano anti-adhesion layer 232 is 50 nm.

[0063] like Figure 1 As shown, the stirring device 1 includes a stirring tank 11 , a stirring shaft 12 and a stirring paddle 13 located on the stirring shaft 12 .

[0064] The rotating shaft 211 is driven by a first motor 25 , and the stirring shaft 12 is driven by a second motor 14 .

[0065] The rotating shaft 211 and the stirring shaft 12 are parallel to each other, and the rotating directions of the rotating shaft 211 and the stirring shaft 12 are consistent, so as to ensure that the powder can be smoothly mixed into the liquid material in the stirring direction of the stirring device 1 after being blown out from the underwater feeding device 2, so as to achieve the purpose of rapid mixing.

[0066] The rotating paddles 212 are spirally distributed dragon blades to reduce the resistance of the powder during transportation and reduce the possibility of blockage during transportation.

[0067] In this embodiment, the guide pipe 21 is connected to the discharge pipe 23 by a flange 26, which is convenient for disassembly and replacement without changing the structure of the guide pipe 21. In some embodiments, the guide pipe 21 and the discharge pipe 23 are integrated cylindrical pipes, and as long as the guide pipe 21 and the discharge pipe 23 are connected, no specific limitation is made here.

[0068] The discharge port 231 is a circular discharge port. In this embodiment, the discharge port 231 and the discharge pipe 23 are both circular to ensure the discharge speed of the powder.

[0069] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A submerged feeding and stirring system, characterized in that: It comprises a stirring device (1) and a submerged feeding device (2) located in the stirring device (1); The submerged feeding device (2) comprises a flow guide pipe (21), a feed pipe (22) and a discharge pipe (23); the flow guide pipe (21) comprises a rotating shaft (211) and a rotating paddle (212) arranged on the rotating shaft (211); The guide pipe (21) is divided into a stirring zone and a blowing zone; the feed pipe (22) is located on the side wall of the stirring zone and forms an acute angle with the horizontal direction and is connected to the guide pipe (21); the powder enters the guide pipe (21) through the feed pipe (22); the discharge pipe (23) is located directly below the guide pipe (21); The blowing area is provided with an air blowing pipe (24), the discharge pipe (23) is provided with a discharge port (231), and the discharge port (231) of the discharge pipe (23) is located below the liquid surface of the liquid material in the stirring device (1).

2. The submerged feeding and stirring system according to claim 1, characterized in that: The length of the rotating shaft (211) is the sum of the lengths of the flow guide pipe (21) and the discharge pipe (23), and the length of the rotating paddle (212) is equal to the length of the stirring zone.

3. The submerged feeding and stirring system according to claim 1, characterized in that: The blowing pipe (24) comprises a first blowing pipe (241) and a second blowing pipe (242); the first blowing pipe (241) is provided at one end of the blowing zone close to the stirring zone, and the second blowing pipe (242) is provided at one end away from the stirring zone.

4. The submerged feeding and stirring system according to claim 3, characterized in that: The side wall of the first blowing pipe (241) forms an angle of 30-60° with the side wall of the blowing zone in the guide pipe (21); the side wall of the first blowing pipe (241) is a hollow conical structure, having a first large diameter end close to the stirring zone and a first small diameter end away from the stirring zone; the first small diameter end is provided with a first blowing port (2411); the opening direction of the first blowing port (2411) is toward the discharge pipe (23).

5. The submerged feeding and stirring system according to claim 3, characterized in that: The side wall of the second air blowing pipe (242) forms an angle of 30-60° with the side wall of the blowing zone in the guide pipe (21); the side wall of the second air blowing pipe (242) is a hollow conical structure, having a second large diameter end close to the stirring zone and a second small diameter end away from the stirring zone; the second large diameter end is provided with a second air blowing port (2421); the opening direction of the second air blowing port (2421) is toward the guide pipe (21).

6. The submerged feeding and stirring system according to claim 1, characterized in that: An anti-blocking scraper and a nano anti-sticking layer (232) located on the inner wall of the discharge pipe (23) are provided in the discharge pipe (23); the anti-blocking scraper comprises a crossbeam (233) and a plurality of scrapers (234) located on the crossbeam (233); the crossbeam (233) is located at one end of the rotating shaft (211) close to the discharge port (231), and is arranged perpendicular to the rotating shaft (211).

7. The submerged feeding and stirring system according to claim 1, characterized in that: The stirring device (1) comprises a stirring tank (11), a stirring shaft (12), and a stirring paddle (13) located on the stirring shaft (12).

8. The submerged feeding and stirring system according to claim 7, characterized in that: The rotating shaft (211) and the stirring shaft (12) are parallel to each other, and the rotating shaft (211) and the stirring shaft (12) have the same rotation direction.

9. The submerged feeding and stirring system according to claim 1, characterized in that: The flow guide pipe (21) and the discharge pipe (23) are integrated cylindrical pipes, or the flow guide pipe (21) and the discharge pipe (23) are connected by a flange (26).

10. A submersible feeding device, characterized in that: The submersible feeding device (2) is the submersible feeding device (2) in the submersible feeding and stirring system according to any one of claims 1 to 9.

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