Material feeding equipment for asphalt mixing plant

Abstract

The utility model discloses asphalt mixing plant material feeding equipment which comprises a fan, a venturi ejector, a material guiding pipe, a cyclone separator and a conveying pipeline, an air outlet of the fan is connected with an inlet of the venturi ejector, a feeding port of the venturi ejector is connected with the material guiding pipe, and a discharging port of the venturi ejector is connected with the cyclone separator. An outlet of the venturi ejector is connected with a feed port of the cyclone separator through a conveying pipeline, and a discharge port of the cyclone separator is connected with a stirring device of the asphalt mixing plant. According to the device, powder materials are prevented from being dispersed in a pneumatic conveying mode, high-pressure gas generated by the fan enters through the inlet of the Venturi ejector, high-speed flow is formed at the throat part, negative pressure is generated to suck the materials, the materials are conveyed into the cyclone separator, and finally the materials are fed into the asphalt mixing plant through the cyclone separator; the problem of dust raising generated in the earthwork process of the powdery materials is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material feeding, in particular to a material feeding device for asphalt mixing station. BACKGROUND

[0002] The statements in this section merely provide background information related to the present application and do not necessarily constitute the prior art.

[0003] The asphalt mixing station is a device that produces finished asphalt mixture by preparing, metering, heating and drying, and stirring aggregate, asphalt and filler.

[0004] Patent publication No. CN218707321U discloses a new material feeding device for asphalt mixing station. The material is pushed into the shovel box by the scraper driven by the motor, and the height of the shovel box is adjusted by the rope winding mechanism, so that the material flows into the feeding groove along the flow groove. However, due to the different particle sizes of the materials, when small particles are scraped, the scraper is easy to scatter small particles, causing dust, which affects normal feeding work. Therefore, a feeding device that can adapt to small particle material feeding is needed. CONTENT OF THE UTILITY MODEL

[0005] The present application proposes a material feeding device for asphalt mixing station to solve the above problems.

[0006] The purpose of the present application is to provide a material feeding device for asphalt mixing station. By means of pneumatic conveying, the dispersion of powdery materials is avoided. The high-pressure gas generated by the fan enters through the inlet of the Venturi ejector, forms a high-speed flow at the throat, and produces negative pressure to suck the material, which is then conveyed to the cyclone separator and finally fed into the asphalt mixing station, solving the problem of dust generated during the earthwork process of powdery materials.

[0007] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0008] A material feeding device for asphalt mixing station, comprising: a fan, a Venturi ejector, a material guide pipe, a cyclone separator and a conveying pipeline, the air outlet of the fan is connected with the inlet of the Venturi ejector, the material inlet of the Venturi ejector is connected with the material guide pipe, the outlet of the Venturi ejector is connected with the material inlet of the cyclone separator through the conveying pipeline, and the material outlet of the cyclone separator is connected with the stirring device of the asphalt mixing station.

[0009] Further, the end of the material guide pipe away from the Venturi ejector is provided with an open funnel.

[0010] Further, the material guide pipe is a bendable hose, and the end of the material guide pipe away from the Venturi ejector is inserted into the bottom of the material.

[0011] Further, the diameter of the conveying pipe is larger than the outlet of the venturi injector.

[0012] Further, the material guiding pipe is provided with a stop valve.

[0013] Further, the conveying pipe is further provided with a pressure sensor and a flow meter.

[0014] Compared with the prior art, the application has the following beneficial effects:

[0015] 1. The application uses pneumatic conveying, the high-pressure airflow generated by the fan passes through the venturi injector to generate negative pressure at the material inlet of the venturi injector, which attracts the material in the material guiding pipe to pass through the venturi injector and the conveying pipe into the cyclone separator, separates the powder material from the air, and then conveys it to the asphalt mixing station, thus completing the material feeding, the whole process uses wind power and does not produce smoke dust, providing a better working environment for the asphalt mixing station and solving the dust problem generated by the powder material in the earthwork process. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic view of the application;

[0017] 1. fan, 2. venturi injector, 3. material guiding pipe, 4. conveying pipe, 5. cyclone separator. DETAILED DESCRIPTION

[0018] The application will be further described below in conjunction with the drawings and examples.

[0019] Example 1

[0020] An asphalt mixing station material feeding device, as shown in Figure 1 , comprising a fan 1, a venturi injector 2, a material guiding pipe 3, a cyclone separator 5 and a conveying pipe 4, the air outlet of the fan 1 is connected with the inlet of the venturi injector 2, the material inlet of the venturi injector 2 is connected with the material guiding pipe 3, the outlet of the venturi injector 2 is connected with the material inlet of the cyclone separator 5 through the conveying pipe 4, and the material outlet of the cyclone separator 5 is connected with the mixing device of the asphalt mixing station. By turning on the fan 1, the fan 1 outputs a high-pressure columnar airflow, the high-pressure columnar airflow passes through the venturi injector 2 to generate a negative pressure inside, the negative pressure attracts the material in the direction of the material guiding pipe 3, the material from the material guiding pipe 3 is sprayed out through the outlet of the venturi injector 2, and then conveyed to the cyclone separator 5 through the conveying pipe 4, the cyclone separator 5 conveys the powder material to the mixing device of the asphalt mixing station, and the gas is discharged through the gas outlet of the cyclone separator 5, so that the material can be directly fed to the asphalt mixing station.

[0021] The end of the material guiding pipe 3 away from the Venturi ejector 2 is provided with an open funnel to facilitate the suction of the material.

[0022] The material guiding pipe 3 is a flexible hose, and the end of the material guiding pipe 3 away from the Venturi ejector 2 is inserted into the bottom of the material, so that the material can be directly sucked from the material pile, and the transportation speed of the material is improved.

[0023] The diameter of the conveying pipe 4 is greater than the outlet of the Venturi ejector 2, which facilitates the discharge of the material and prevents the pressure at the outlet of the Venturi ejector 2 from being too large to damage the conveying pipe 4.

[0024] The material guiding pipe 3 is provided with a stop valve, which is closed when the material is not needed to be sucked, so as to prevent other materials that are not needed to be put into the asphalt mixing station from entering the material guiding pipe 3.

[0025] The conveying pipe 4 is also provided with a pressure sensor and a flow meter, which detect whether the device as a whole is malfunctioning by monitoring the flow rate and pressure of the material in the conveying pipe 4, facilitating subsequent maintenance.

[0026] The fan 1 is a Roots fan 1, and the high-pressure gas generated by the Roots fan 1 enters the inlet of the Venturi ejector 2, forms a high-speed flow at the throat, and generates a negative pressure to suck the material in the direction of the material guiding pipe 3.

[0027] In the technical solution of the present application, the Roots fan 1 is started, the Roots fan 1 outputs a high-pressure columnar air flow, the high-pressure columnar air flow passes through the throat of the Venturi ejector 2 to form a high-speed flow, generates a negative pressure, and the negative pressure attracts the material in the direction of the material guiding pipe 3. The material enters the material guiding pipe 3 and is sprayed out through the outlet of the Venturi ejector 2, and is conveyed to the cyclone separator 5 through the conveying pipe 4. The pressure sensor and the flow meter in the conveying pipe 4 monitor the pressure change and the flow rate in real time. If the pressure and the flow rate suddenly decrease, it indicates that the Venturi ejector 2 or the conveying pipe 4 is blocked, so that whether the device as a whole is malfunctioning can be determined through the pressure sensor or the flow meter. The cyclone separator 5 conveys the powdery material to the mixing device of the asphalt mixing station, and the gas is discharged through the gas outlet of the cyclone separator 5. In this way, the powdery material can be directly put into the asphalt mixing station, and the phenomenon of dust generation when the powdery material is put into the asphalt mixing station can be avoided by the way of attracting the material through the material guiding pipe 3 and the principle of air conveying.

[0028] Although the specific embodiments of the present application have been described above with reference to the drawings, the present application is not limited to the above-described embodiments, and various modifications or changes can be made to the technical solution of the present application without creative labor, which are still within the scope of protection of the present application.

Claims

1. An asphalt plant material delivery apparatus, characterized by, The utility model relates to an asphalt feeding device for asphalt mixing station, which comprises a fan, a venturi ejector, a material guiding pipe, a cyclone separator and a conveying pipe, the outlet of the fan is connected with the inlet of the venturi ejector, the material inlet of the venturi ejector is connected with the material guiding pipe, the outlet of the venturi ejector is connected with the material inlet of the cyclone separator through the conveying pipe, and the material outlet of the cyclone separator is connected with the mixing device of the asphalt mixing station. The end of the material guiding pipe away from the venturi ejector is provided with an open funnel.

2. An asphalt plant material delivery apparatus as claimed in claim 1, wherein, The material guiding pipe is a bendable hose, and the end of the material guiding pipe away from the venturi ejector is inserted into the bottom of the material.

3. An asphalt plant material delivery apparatus as claimed in claim 1, wherein, The diameter of the conveying pipe is greater than that of the outlet of the venturi ejector.

4. An asphalt plant material delivery apparatus as claimed in claim 1, wherein, A stop valve is arranged on the material guiding pipe.

5. An asphalt plant material delivery apparatus as claimed in claim 1, wherein, A pressure sensor and a flow meter are further arranged in the conveying pipe.

6. An asphalt plant material delivery apparatus as claimed in claim 1, wherein, ​

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