Pneumatic asphalt mixture solid admixture feeding device
By designing a pneumatic asphalt mixture solid admixture feeding device and using an air pump to provide pneumatic power, the problem of uneven feeding of solid admixture is solved, and the uniform mixing and stable properties of the mixture are achieved, which is convenient to meet the mixing requirements of different admixtures.
Patent Information
- Application Number
- CN202421823358.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-30
AI Technical Summary
During the stirring and preparation of the asphalt mixture, the solid admixture feed is uneven, resulting in insufficient mixing and the performance of the mixture is different from expected.
A pneumatic asphalt mixture solid admixture feeding device is designed to provide pneumatic power to the spray gun through an air pump, and flexibly adjust the feeding interval, air pressure, and distance between the discharge port and the cone to achieve uniform spraying of materials.
It realizes uniform feeding during the mixing process, ensures sufficient mixing and stable properties of the mixture, meets the mixing requirements of different admixtures, and is easy to promote and use.
Smart Images
Figure CN222872052U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of solid admixture feeding, and in particular relates to a pneumatic asphalt mixture solid admixture feeding device. Background Art
[0002] In the process of mixing and preparing asphalt mixture, in order to improve the performance of asphalt mixture, many kinds of additives need to be added when mixing asphalt mixture, including powdered admixtures, granular admixtures, etc. In the process of mixing solid additives with asphalt mixture in the horizontal asphalt mixing plant, the mixing is often uneven due to short mixing time or concentrated solid particles, and the performance of the mixture is different from the expected. Therefore, a device for uniform feeding of solid admixtures is needed. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a pneumatic asphalt mixture solid admixture feeding device in view of the deficiencies in the above-mentioned prior art. The design is novel and reasonable. The air pump is used to provide pneumatic force to the pipe section between the upper valve and the lower valve for spraying. For solid admixtures with different dosage requirements, the feeding interval of the spray gun, the air pressure, and the distance between the discharge port and the cone can be flexibly adjusted to ensure uniform material spraying. The device is used to evenly feed the material during the mixing process so that the mixture is sufficiently mixed, thereby ensuring the stability of the properties of the asphalt mixture, thereby meeting the mixture requirements of different admixtures and facilitating promotion and use.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a pneumatic asphalt mixture solid admixture feeding device, characterized in that: it includes a spray gun installed on the top plate of the mixing box and a solid admixture dispersion cone arranged in the mixing box for dispersing the solid admixture sprayed by the spray gun, the spray gun includes a feed pipe inserted into the mixing box at one end, an upper valve and a lower valve are arranged on the pipe section of the feed pipe exposed outside the mixing box, an air pipe is connected to the pipe section of the feed pipe located between the upper valve and the lower valve, an air pump is installed at the air inlet end of the air pipe, the air inlet end of the air pump is externally connected to the air inlet pipe, and a first socket for inserting the feed pipe is opened on the top plate of the mixing box.
[0005] The above-mentioned pneumatic asphalt mixture solid admixture feeding device is characterized in that: the solid admixture dispersion cone is installed in the mixing box through a fixed rod, the fixed rod is a U-shaped fixed rod, and the U-shaped fixed rod includes a horizontal rod located in the mixing box and two vertical rods extending out of the mixing box. The solid admixture dispersion cone is installed on the horizontal rod and is located directly below the discharge end of the feed pipe.
[0006] The above-mentioned pneumatic asphalt mixture solid admixture feeding device is characterized in that: two second sockets are opened on the top plate of the mixing box for two vertical rods to pass through respectively, and the two vertical rods are provided with external threads and nuts adapted to the external threads, and the outer diameter of the nuts is larger than the inner diameter of the second sockets.
[0007] The above-mentioned pneumatic asphalt mixture solid admixture feeding device is characterized in that the upper valve and the lower valve are both solenoid valves.
[0008] The above-mentioned pneumatic asphalt mixture solid admixture feeding device is characterized in that the air pump is an electric air pump.
[0009] The above-mentioned pneumatic asphalt mixture solid admixture feeding device is characterized in that an air pressure sensor is provided on the pipe section between the upper valve and the lower valve on the feed pipe.
[0010] The beneficial effects of the utility model are that the design is novel and reasonable, and the air pump is used to provide pneumatic force to the pipe section between the upper valve and the lower valve for spraying. For solid admixtures with different dosage requirements, the feeding interval of the spray gun, the air pressure, and the distance between the discharge port and the cone can be flexibly adjusted to ensure uniform material spraying, so as to ensure uniform feeding during the mixing process so that the mixture is sufficiently mixed, thereby ensuring the stability of the properties of the asphalt mixture, thereby meeting the mixture requirements of different admixtures and facilitating promotion and use.
[0011] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model.
[0013] Figure 2 It is a schematic diagram of the structure of the part of the utility model exposed outside the mixing box.
[0014] Description of reference numerals:
[0015] 1—mixing box; 2—first socket; 3—feeding pipe;
[0016] 4—upper valve; 5—lower valve; 6—gas pipe;
[0017] 7—air pump; 8—air inlet pipe; 9—nut;
[0018] 10—fixed rod; 11—external thread; 12—solid admixture dispersion cone. DETAILED DESCRIPTION
[0019] like Figure 1 and Figure 2As shown, the utility model includes a spray gun installed on the top plate of a mixing box 1 and a solid additive dispersing cone 12 arranged in the mixing box 1 for dispersing the solid additive sprayed from the spray gun, the spray gun includes a feed pipe 3 inserted into the mixing box 1 at one end, an upper valve 4 and a lower valve 5 are arranged on the pipe section of the feed pipe 3 exposed outside the mixing box 1, an air pipe 6 is connected to the pipe section of the feed pipe 3 located between the upper valve 4 and the lower valve 5, an air pump 7 is installed at the air inlet end of the air pipe 6, and an air inlet pipe 8 is externally connected to the air inlet end of the air pump 7, and a first socket 2 for inserting the feed pipe 3 is opened on the top plate of the mixing box 1.
[0020] It should be noted that the air pump is used to provide pneumatic force to the pipe section between the upper valve and the lower valve for spraying. For solid admixtures with different dosage requirements, the feeding interval of the spray gun, the air pressure, and the distance between the discharge port and the cone can be flexibly adjusted to ensure uniform material spraying. This is used to evenly feed the material during the mixing process so that the mixture is adequately mixed, thereby ensuring the stability of the properties of the asphalt mixture and meeting the mixture requirements of different admixtures.
[0021] In this embodiment, the solid additive dispersion cone 12 is installed in the mixing box 1 through a fixed rod 10. The fixed rod 10 is a U-shaped fixed rod. The U-shaped fixed rod includes a horizontal rod located in the mixing box 1 and two vertical rods extending outside the mixing box 1. The solid additive dispersion cone 12 is installed on the horizontal rod and is located directly below the discharge end of the feed pipe 3.
[0022] In this embodiment, two second sockets are provided on the top plate of the mixing box 1 for two vertical rods to pass through respectively. Both vertical rods are provided with external threads 11 and nuts 9 adapted to the external threads 11. The outer diameter of the nuts 9 is larger than the inner diameter of the second sockets.
[0023] It should be noted that the external thread 11 and the nut 9 cooperate to achieve the adjustable upper and lower positions of the solid admixture dispersion cone 12, and the use of a large-range solid particle pneumatic spray gun with adjustable distance greatly increases the contact area of the feed particles, effectively solving the problem of uneven mixing of solid powdery granular additives during the asphalt mixture mixing process.
[0024] In this embodiment, the upper valve 4 and the lower valve 5 are both solenoid valves.
[0025] In this embodiment, the air pump 7 is an electric air pump.
[0026] In this embodiment, an air pressure sensor is provided on the pipe section between the upper valve 4 and the lower valve 5 on the feed pipe 3 .
[0027] When the utility model is used, the spray gun is located on the upper side of the asphalt mixing box 1 and is combined with the top plate of the mixing box 1. When feeding, the upper valve 4 is opened, and the solid admixture enters the spray gun, and the lower valve 5 is closed at this time. After all the admixtures of a single mass are put in, the inlet is closed by controlling the upper valve 4. At this time, the air pump 7 starts to work, and the external gas is pressurized into the gas pipe 6 through the air inlet pipe 8. The air pressure inside the spray gun gradually increases. During the process, the air pressure sensor can be used to check whether the air pressure reaches the preset value. After the set pressure is reached in the pipe, the air pump stops working. By opening the lower valve 5, the admixture is quickly taken out of the spray gun by the high-pressure gas in the pipe and is ejected from the discharge port of the feed pipe 3 to the mixing bin below. The admixture collides with the solid admixture dispersion cone 12 on the way out, and the granular or powdery admixture collides and disperses with the surface of the cone, thereby achieving the purpose of large-scale delivery and making the mixture more evenly mixed.
[0028] The cone is mounted on the mixing box 1 through the nut 9 on the fixing rod 10. The distance between the cone collision surface and the discharge port can be adjusted by adjusting the thread height on the fixing rod 10 to adjust the dispersion range of the solid admixture, thereby achieving the goal of uniform mixing of the mixture.
[0029] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural change made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.
Claims
1. A pneumatic asphalt mixture solid admixture feeding device, characterized in that: The invention comprises a spray gun mounted on the top plate of a mixing box (1) and a solid additive dispersing cone (12) arranged in the mixing box (1) for dispersing the solid additive sprayed by the spray gun. The spray gun comprises a feed pipe (3) with one end inserted into the mixing box (1). An upper valve (4) and a lower valve (5) are arranged on the pipe section of the feed pipe (3) exposed outside the mixing box (1). An air delivery pipe (6) is connected to the pipe section of the feed pipe (3) located between the upper valve (4) and the lower valve (5). An air pump (7) is installed at the air inlet end of the air delivery pipe (6). An air inlet pipe (8) is externally connected to the air inlet end of the air pump (7). A first socket (2) for inserting the feed pipe (3) is provided on the top plate of the mixing box (1).
2. A pneumatic asphalt mixture solid admixture feeding device according to claim 1, characterized in that: The solid additive dispersion cone (12) is installed in the mixing box (1) via a fixing rod (10). The fixing rod (10) is a U-shaped fixing rod. The U-shaped fixing rod comprises a horizontal rod located in the mixing box (1) and two vertical rods extending out of the mixing box (1). The solid additive dispersion cone (12) is installed on the horizontal rod and is located directly below the discharge end of the feed pipe (3).
3. A pneumatic asphalt mixture solid admixture feeding device according to claim 2, characterized in that: The top plate of the mixing box (1) is provided with two second sockets for two vertical rods to pass through respectively. Both vertical rods are provided with external threads (11) and nuts (9) adapted to the external threads (11). The outer diameter of the nuts (9) is larger than the inner diameter of the second sockets.
4. A pneumatic asphalt mixture solid admixture feeding device according to claim 1, characterized in that: The upper valve (4) and the lower valve (5) are both solenoid valves.
5. A pneumatic asphalt mixture solid admixture feeding device according to claim 1, characterized in that: The air pump (7) is an electric air pump.
6. A pneumatic asphalt mixture solid admixture feeding device according to claim 1, characterized in that: An air pressure sensor is provided on the pipe section of the feed pipe (3) between the upper valve (4) and the lower valve (5).