Accurate-metering automatic material adding device for modified asphalt production

Abstract

The utility model discloses an automatic material adding device with accurate metering for modified asphalt production, which comprises a feeding unit, a weighing unit, a conveying unit and a discharging unit which are sequentially communicated, the weighing unit comprises a weighing tank, a weighing tank support and a weighing module, and the conveying unit comprises a conveying tank and a conveying tank support. The top end of the conveying tank communicates with the bottom end of the weighing tank; the feeding unit is communicated with the top end of the weighing tank, and the discharging unit is communicated with the bottom end of the conveying tank; the accurate-metering automatic material adding device for modified asphalt production, provided by the utility model, is simple in structure, easy to operate and simple in structure. And the equipment is relatively low in cost, and is not limited to addition of modified asphalt production materials. Compared with a traditional metering mode, the design of the upper storage tank gives full play to the advantage of weighing and metering accuracy to the maximum extent.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment for asphalt modification, specifically to an automatic material addition device for precise metering in the production of modified asphalt. Background Technology

[0002] With the rapid development of road transportation in my country, the demand for asphalt is also increasing. Modified asphalt, as a representative of new road materials, features high strength, good aging resistance, and high shear strength, and is widely used in highway construction, cement pavement reconstruction, and base course treatment. According to statistics from domestic and international market research institutions, the market demand for modified asphalt has shown a year-on-year growth trend in recent years, with the market size continuously expanding. Especially in domestic road maintenance and highway construction, the demand for modified asphalt has experienced explosive growth. Faced with this increasing demand, the quality requirements for modified asphalt are becoming increasingly stringent, and the monitoring scope of various indicators is becoming more rigorous. Therefore, refined production processes have become a key point in quality control during the production of modified asphalt. When producing different types of asphalt, it is necessary to add materials such as modifiers, co-solvents, rubber powder, and stabilizers in specific proportions to improve the performance of the asphalt. The precise proportions of different materials added have become a key aspect of quality control in modified asphalt. Traditional production processes typically measure the addition of fluid materials using flow meters or by volume, which is easily affected by fluid temperature and density, leading to inaccurate addition amounts. This inaccurate proportions result in inconsistent production formulas, causing unstable production quality and potential quality incidents. Furthermore, inaccurate statistics lead to waste of raw materials and increased production costs. While current processes can achieve precise metering for solid materials, a satisfactory solution remains lacking for the continuous and precise control of fluid material addition. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide an automatic material addition device for precise metering in the production of modified asphalt, thereby solving the problem that existing devices struggle to accurately control the amount of fluid material added during continuous addition.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an automatic material addition device for precise metering in the production of modified asphalt, comprising a feeding unit, a weighing unit, a conveying unit and a discharging unit connected in sequence.

[0005] The weighing unit includes a weighing tank, and a weighing tank support is installed at the bottom of the weighing tank. The weighing tank support is installed on the ground through a weighing module.

[0006] The conveying unit includes a conveying tank, and a conveying tank support is installed at the bottom of the conveying tank, with the conveying tank support installed on the ground.

[0007] The top of the conveying tank is connected to the bottom of the weighing tank.

[0008] The feeding unit is connected to the top of the weighing tank, and the discharging unit is connected to the bottom of the conveying tank.

[0009] This utility model also has the following technical features:

[0010] The bottom of the weighing tank is conical.

[0011] A pressure sensor is also installed on the top of the weighing tank.

[0012] The weighing unit also includes a float device installed on the weighing tank.

[0013] The float device includes a float located inside the weighing tank and a float scale installed on the float, with the float scale extending upwards out of the weighing tank.

[0014] The end of the float scale extending out of the weighing tank is also fitted with a pressure plate.

[0015] A first liquid level sensor is also installed on the outer side of the top of the weighing tank.

[0016] The weighing tank is also equipped with a first temperature sensor and a first electric heating module.

[0017] The top of the conveying tank is connected to the bottom of the weighing tank via a connecting pipe. The connecting pipe extends into the interior of the conveying tank and is also equipped with a connecting valve.

[0018] A drain pipe is also connected to one side of the connecting pipe, and a drain valve is installed on the drain pipe.

[0019] The conveying tank is also equipped with a detachable basket filter screen, which is located on the outside of the end of the connecting pipe that extends into the conveying tank.

[0020] The top of the conveying tank is also equipped with a liquid level radar.

[0021] A second liquid level sensor is also installed on the outer side of the top of the conveying tank.

[0022] A third liquid level sensor is also installed on the outer side of the bottom of the conveying tank.

[0023] A second temperature sensor is also installed on the outside of the conveying tank.

[0024] The conveying tank is also equipped with a second electric heating module.

[0025] The feeding unit includes a material extraction pump and a feed pipe connected to the material extraction pump, and a feed electric valve is also installed on the feed pipe.

[0026] The feed pipe extends into the weighing tank.

[0027] The discharge unit includes a conveying pump and a discharge pipe connected to the conveying pump, and a discharge electric valve is also installed on the discharge pipe.

[0028] The discharge pipe is connected to the bottom of the conveying tank.

[0029] The aforementioned automatic material addition device for precise metering in the production of modified asphalt also includes a control unit.

[0030] The control unit is connected to a weighing module, a pressure sensor, a first liquid level sensor, a first electric heating module, a connecting valve, a drain valve, a second liquid level sensor, a third liquid level sensor, a second temperature sensor, a second electric heating module, a material extraction pump, a feed electric valve, a conveying pump, and a discharge electric valve.

[0031] Compared with the prior art, this utility model has the following technical effects:

[0032] (I) This utility model provides an automatic material addition device for precise metering in modified asphalt production. It features a simple and easy-to-operate structure, meeting economic requirements with low cost. Its applications extend beyond simply adding materials for modified asphalt production. Compared to traditional metering methods, the upper storage tank design maximizes the accuracy of weighing and metering.

[0033] (II) The present invention provides an automatic material addition device for precise metering in the production of modified asphalt, which realizes the precise control of the addition amount of fluid material while continuously adding it, thus ensuring the accuracy of the material and the stability of product quality. It also enables refined management in the production process, reduces the labor intensity of operators, improves the automation level of the production process and the monitoring of the production process, and realizes automated feeding, thereby reducing labor costs and improving the refinement of the production process and controlling production costs.

[0034] (III) The present invention provides an automatic material addition device for precise metering in the production of modified asphalt, which has high integration, small space occupation and low cost. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of an automatic material addition device for precise metering in the production of modified asphalt, according to the present invention.

[0036] The meanings of the labels in the attached diagram are as follows:

[0037] 1-Feeding unit, 2-Weighing unit, 3-Conveying unit, 4-Discharge unit, 5-Connecting pipe, 6-Connecting valve, 7-Drain pipe, 8-Drain valve, 9-Control unit.

[0038] 1-1 Material extraction pump, 1-2 Feed pipe, 1-3 Feed electric valve.

[0039] 2-1-Weighing tank, 2-2-Weighing tank support, 2-3-Weighing module, 2-4-Pressure sensor, 2-5-Float device, 2-6-First liquid level sensor, 2-7-First temperature sensor, 2-8-First electric heating module.

[0040] 3-1-Transfer tank, 3-2-Transfer tank support, 3-3-Detachable basket filter, 3-4-Level radar, 3-5-Second level sensor, 3-6-Third level sensor, 3-7-Second temperature sensor, 3-8-Second electric heating module.

[0041] 4-1-Transfer pump, 4-2-Discharge pipe, 4-3-Discharge electric valve.

[0042] 2-5-1-Float, 2-5-2-Float scale, 2-5-3-Pressure plate.

[0043] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0044] Unless otherwise specified, all components in this invention are made from components known in the prior art.

[0045] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0046] Example 1:

[0047] This embodiment provides an automatic material addition device for precise metering in the production of modified asphalt, as shown in Figure 1, which includes a feeding unit 1, a weighing unit 2, a conveying unit 3, and a discharging unit 4 connected in sequence.

[0048] The weighing unit 2 is located on top of the conveying unit 3.

[0049] The weighing unit 2 includes a weighing tank 2-1, and a weighing tank support 2-2 is installed at the bottom of the weighing tank 2-1. The weighing tank support 2-2 is installed on the ground through a weighing module 2-3.

[0050] The conveying unit 3 includes a conveying tank 3-1, and a conveying tank support 3-2 is installed at the bottom of the conveying tank 3-1. The conveying tank support 3-2 is installed on the ground.

[0051] The top of the conveying tank 3-1 is connected to the bottom of the weighing tank 2-1.

[0052] The feeding unit 1 is connected to the top of the weighing tank 2-1, and the discharging unit 4 is connected to the bottom of the conveying tank 3-1.

[0053] The upper weighing tank has no rigid contact with any of the pipes, and the electrical wiring is all flexible, which fully ensures the accuracy of weighing and measurement.

[0054] This utility model provides an automatic material adding device for precise metering in modified asphalt production. It features a simple and easy-to-operate structure, meeting economic requirements with low cost. Its applications extend beyond simply adding materials for modified asphalt production. Compared to traditional metering methods, the upper storage tank design maximizes the accuracy of weighing.

[0055] As a preferred embodiment:

[0056] The bottom of the weighing tank 2-1 is conical.

[0057] A pressure sensor 2-4 is also installed on the top of the weighing tank 2-1.

[0058] As a preferred embodiment:

[0059] The weighing unit 2 also includes a float device 2-5 installed on the weighing tank 2-1.

[0060] The float device 2-5 includes a float 2-5-1 located inside the weighing tank 2-1 and a float scale 2-5-2 installed on the float 2-5-1, wherein the float scale 2-5-2 extends upward out of the weighing tank 2-1.

[0061] The end of the float scale 2-5-2 that extends out of the weighing tank 2-1 is also fitted with a pressure plate 2-5-3.

[0062] When the liquid level in weighing tank 2-1 reaches zero, float 2-5-1 will reach its lowest point. Simultaneously, the pressure plate 2-5-3 fixed at float scale 2-5-2 will contact pressure module 2-4, and a signal will be transmitted to control unit 9. Control unit will then start pump 1-1 and simultaneously close pneumatic valve 6, allowing material to enter the weighing tank. The float will lift pressure plate 2-5-3. When the liquid level reaches level sensor 2-6, sensor 2-6 will transmit a signal to control unit 9. Control unit 9 will then send a signal to stop pump 1-1. Simultaneously, control system will read data from weighing module 2-3 and record the weighing result.

[0063] As a preferred embodiment:

[0064] The weighing tank 2-1 is also equipped with a first liquid level sensor 2-6 on the outer side of its top.

[0065] The weighing tank 2-1 is also equipped with a first temperature sensor 2-7 and a first electric heating module 2-8.

[0066] To avoid inaccurate weighing due to hard connections, an electric heating module 2-8 is added to address the issue of low material temperature and high viscosity affecting production. The primary function of the first temperature sensor 2-7 is to transmit temperature signals to the controller 9, which controls the start and stop of the first electric heating module 2-8 based on the set minimum and maximum temperatures.

[0067] As a preferred embodiment:

[0068] The top of the conveying tank 3-1 is connected to the bottom of the weighing tank 2-1 via a connecting pipe 5. The connecting pipe 5 extends into the interior of the conveying tank 3-1, and a connecting valve 6 is also installed on the connecting pipe 5.

[0069] A drain pipe 7 is also connected to one side of the connecting pipe 5, and a drain valve 8 is installed on the drain pipe 7.

[0070] The conveying tank 3-1 is also equipped with a detachable basket filter 3-3, which is located on the outside of the end of the connecting pipe 5 that extends into the conveying tank 3-1.

[0071] The main function of the basket filter in this device is to filter out smaller impurities or flocculent matter in the liquid material that cannot be filtered out by the pre-pump filter, so as to avoid impurities in the material affecting the quality and the accuracy of other equipment.

[0072] As a preferred embodiment:

[0073] The top of the conveying tank 3-1 is also equipped with a liquid level radar 3-4.

[0074] A second liquid level sensor 3-5 is also installed on the outer side of the top of the conveying tank 3-1.

[0075] A third liquid level sensor 3-6 is also installed on the outer side of the bottom of the conveying tank 3-1.

[0076] A second temperature sensor 3-7 is also installed on the outside of the conveying tank 3-1.

[0077] The conveying tank 3-1 is also equipped with a second electric heating module 3-8.

[0078] The liquid level radar 3-4 primarily controls the liquid level in the conveying tank 3-1. It can also set the maximum and minimum liquid levels to control the opening and closing of the pneumatic valve 6, ensuring a constant presence of material in the conveying tank 3-1 and guaranteeing continuous material transport. The minimum liquid level setting will activate the pneumatic valve 4-3 to start the conveying tank 4-1.

[0079] The second liquid level sensor 3-5 is used to prevent overflow from occurring if the liquid level radar fails or the pneumatic valve 6 cannot be closed.

[0080] The third liquid level sensor 3-6, after the controller 9 receives signals from the pressure plate 2-5-3 and pressure sensor 2-4 indicating that the weighing data recorded by the weighing tank 2-1 is sufficient for the current production, will cause the liquid level radar 3-4 to stop working and the pneumatic valve 6 to close. Once the liquid level sensor 3-6 transmits the signal to the controller 9, the controller 9 will sequentially stop the pneumatic valve 4-3 and the transfer pump 4-1.

[0081] The second temperature sensor 3-7 and the second electric heating module 3-8 have the same working principle and function as the first temperature sensor 2-7 and the first electric heating module 2-8.

[0082] As a preferred embodiment:

[0083] The feeding unit 1 includes a material extraction pump 1-1 and a feed pipe 1-2 connected to the material extraction pump 1-1. The feed pipe 1-2 is also equipped with a feed electric valve 1-3.

[0084] The feed pipe 1-2 extends into the weighing tank 2-1.

[0085] As a preferred embodiment:

[0086] The discharge unit 4 includes a conveying pump 4-1 and a discharge pipe 4-2 connected to the conveying pump 4-1. The discharge pipe 4-2 is also equipped with a discharge electric valve 4-3.

[0087] The discharge pipe 4-2 is connected to the bottom of the conveying tank 3-1.

[0088] As a preferred embodiment:

[0089] The aforementioned automatic material addition device for precise metering in the production of modified asphalt also includes a control unit 9.

[0090] The control unit 9 is connected to the weighing module 2-3, pressure sensor 2-4, first liquid level sensor 2-6, first electric heating module 2-8, connecting valve 6, drain valve 8, liquid level radar 3-4, second liquid level sensor 3-5, third liquid level sensor 3-6, second temperature sensor 3-7, second electric heating module 3-8, material extraction pump 1-1, feed electric valve 1-3, conveying pump 4-1, and discharge electric valve 4-3.

[0091] The specific working process of this utility model:

[0092] First, turn on the power to supply power to the system. Control unit 9 will then be powered on. Input the material quantity into control unit 9 according to the production demand. The system will then sequentially activate the feed electric valve 1-3 and the material extraction pump 1-1 to begin feeding the corresponding material into the weighing tank 2-1. Simultaneously, the weighing module 2-3 will begin operating and record the weight of the material fed in (multiple weighings can be performed depending on the actual usage).

[0093] At this time, connecting valve 6 is in the closed state.

[0094] When the first liquid level sensor 2-6 detects the liquid level, it transmits a signal to the control unit 9 to record the weight of the material and then stops the material extraction pump 1-1 and the feed electric valve 1-3 in sequence.

[0095] Production begins according to the production process. Connecting valve 6 opens automatically, and materials begin to enter the conveying tank 3-1 under self-pressure. When the liquid level in the conveying tank reaches the set value of the liquid level radar 3-4, the control unit 9 automatically opens the discharge electric valve 4-3 and starts the conveying pump 4-1 to reach the set frequency.

[0096] At this time, connecting valve 6 is still in the open state.

[0097] When the second liquid level sensor 3-5 detects the liquid level, it transmits the signal to the control unit 9, which automatically closes the connecting valve 6. The second liquid level sensor 3-5 and the liquid level radar 3-4 control the opening and closing of the connecting valve 6, ensuring the stability of the liquid level in the conveying tank while achieving continuous feeding.

[0098] When the weighing tank cannot meet the production needs in one weighing, the float 2-5-1 falls to the bottom of the weighing tank 2-1, the pressure plate 2-5-3 contacts the pressure sensor 2-4, and after the control unit 9 receives the pressure signal, it first closes the connecting valve 6, starts the material weighing process, the weighing module 2-3 records the weighing result, and stops weighing after the cumulative amount reaches the actual required amount, and releases the control of the connecting valve 6 and is controlled by the lower conveying tank.

[0099] Once the weighing value reaches the set value and the weighing module 2-3 returns to zero, the control of the liquid level radar 3-4 is released. After the third liquid level sensor 3-6 detects the value, it determines that the system has completed the material delivery as required. Upon receiving the signal, the control unit 9 sequentially closes the discharge electric valve 4-3 and the delivery pump 4-1. The amount used in this production is recorded. Finally, the function of this utility model is realized.

[0100] In this embodiment, the material enters the liquid conveying tank by gravity flow. During production, the total material demand is input into the control unit based on the required quantity. The control unit then activates the electric valves and material extraction pumps on the conveying pipeline. The material enters the upper weighing tank for metering and weighing, while the lower conveying tank, acting as a transfer tank, sends the material into the production system via a material conveying pump. This device achieves continuous, uniform, automated, and one-button operation of the material while solving the problem of inaccurate metering of fluid material additives in modified asphalt production. Simultaneously, electric heaters are installed in both the upper and lower tanks. After setting the temperature value according to actual requirements, the control system performs thermal compensation based on the actual material temperature to ensure the process temperature.

[0101] The device of this invention has a simple and easy-to-operate structure. It meets economic requirements, with low cost, and is applicable not only to the addition of materials in modified asphalt production. Compared to traditional metering methods, the upper storage tank design maximizes the accuracy of weighing and metering while achieving automated feeding, reducing labor costs, improving the precision of the production process, and controlling production costs.

[0102] The above technical solutions are only preferred embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be conceived by those skilled in the art without creative effort within the technical scope disclosed in this utility model are covered within the protection scope of this utility model.

Claims

1. A material automatic adding device for precision metering of modified asphalt asphalt production, comprising a feeding unit (1), a weighing unit (2), a conveying unit (3) and a discharging unit (4) connected in sequence, characterized in that, The weighing unit (2) includes a weighing tank (2-1), and a weighing tank support (2-2) is installed at the bottom of the weighing tank (2-1). The weighing tank support (2-2) is installed on the ground through a weighing module (2-3). The conveying unit (3) includes a conveying tank (3-1), and a conveying tank support (3-2) is installed at the bottom of the conveying tank (3-1). The conveying tank support (3-2) is installed on the ground. The top of the conveying tank (3-1) is connected to the bottom of the weighing tank (2-1); The feeding unit (1) is connected to the top of the weighing tank (2-1), and the discharging unit (4) is connected to the bottom of the conveying tank (3-1).

2. A device for automatic addition of materials for precision metering in the production of modified bitumen bitumens according to claim 1, characterized in that, The bottom of the weighing tank (2-1) is conical; A pressure sensor (2-4) is also installed on the top of the weighing tank (2-1).

3. A device for automatic addition of materials for precision metering in the production of modified bitumen bitumens according to claim 2, characterized in that, The weighing unit (2) further includes a float device (2-5) installed on the weighing tank (2-1); The float device (2-5) includes a float (2-5-1) located inside the weighing tank (2-1) and a float scale (2-5-2) installed on the float (2-5-1), wherein the float scale (2-5-2) extends upward out of the weighing tank (2-1); The end of the float scale (2-5-2) extending out of the weighing tank (2-1) is also fitted with a pressure plate (2-5-3).

4. A device for automatic addition of materials for precision metering in the production of modified bitumen bitumens according to claim 3, characterized in that, A first liquid level sensor (2-6) is also installed on the outer side of the top of the weighing tank (2-1); The weighing tank (2-1) is also equipped with a first temperature sensor (2-7) and a first electric heating module (2-8).

5. A device for automatic addition of materials for precision metering in the production of modified bitumen bitumens according to claim 4, characterized in that, The top of the conveying tank (3-1) is connected to the bottom of the weighing tank (2-1) through a connecting pipe (5). The connecting pipe (5) extends into the interior of the conveying tank (3-1). A connecting valve (6) is also installed on the connecting pipe (5). A drain pipe (7) is also connected to one side of the connecting pipe (5), and a drain valve (8) is installed on the drain pipe (7); The conveying tank (3-1) is also equipped with a detachable basket filter (3-3), which is located on the outside of the end of the connecting pipe (5) that extends into the conveying tank (3-1).

6. A device for automatic addition of materials for precision metering in the production of modified bitumen bitumens according to claim 5, characterized in that, The top of the conveying tank (3-1) is also equipped with a liquid level radar (3-4); A second liquid level sensor (3-5) is also installed on the outer side of the top of the conveying tank (3-1); A third liquid level sensor (3-6) is also installed on the outer bottom of the conveying tank (3-1); A second temperature sensor (3-7) is also installed on the outside of the conveying tank (3-1); The conveying tank (3-1) is also equipped with a second electric heating module (3-8).

7. A device for automatic addition of materials for precision metering in the production of modified bitumen bitumens according to claim 6, characterized in that, The feeding unit (1) includes a material extraction pump (1-1) and a feed pipe (1-2) connected to the material extraction pump (1-1). The feed pipe (1-2) is also equipped with a feed electric valve (1-3). The feed pipe (1-2) extends into the weighing tank (2-1).

8. A device for automatic addition of materials for precision metering in the production of modified bitumen bitumens according to claim 7, characterized in that, The discharge unit (4) includes a conveying pump (4-1) and a discharge pipe (4-2) connected to the conveying pump (4-1). The discharge pipe (4-2) is also equipped with a discharge electric valve (4-3). The discharge pipe (4-2) is connected to the bottom of the conveying tank (3-1).

9. A device for automatic addition of materials for precision metering in the production of modified bitumen bitumens according to claim 8, characterized in that, The material automatic addition device for precise metering of modified asphalt production also includes a control unit (9); The control unit (9) is connected to the weighing module (2-3), pressure sensor (2-4), first liquid level sensor (2-6), first electric heating module (2-8), connecting valve (6), drain valve (8), liquid level radar (3-4), second liquid level sensor (3-5), third liquid level sensor (3-6), second temperature sensor (3-7), second electric heating module (3-8), material extraction pump (1-1), feed electric valve (1-3), conveying pump (4-1) and discharge electric valve (4-3).

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