Mixing system for asphalt mixture performance test stage

Abstract

The utility model relates to a mixing system for an asphalt mixture performance test stage, which comprises a plurality of groups of solid material output devices, an asphalt output device and a mixing device, the solid material output device and the asphalt output device are both used for outputting materials to the mixing device; each solid material output device comprises a feeding mechanism and a weighing mechanism, the feeding mechanism is suitable for outputting materials to the weighing mechanism, and the weighing mechanism can be switched between a weighing position for weighing the mass of the materials and a pouring position for pouring out the materials. The material output by each solid material output device can be set to have the required mass, so that the asphalt mixture can obtain higher mixing precision, and the matching degree of the test result and the mass mixing fraction during the performance test of the asphalt mixture is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt mixing test, in particular to a mixing system in the asphalt mixture performance test stage. Background Art

[0002] Asphalt mixture used for road paving is the main raw material for road paving. When paving roads, asphalt needs to be mixed with other materials before it can be put into use. The mixed materials include coarse aggregate, fine aggregate, mineral powder, etc. Each material and asphalt must be mixed according to a predetermined mass ratio to obtain an asphalt mixture with balanced performance.

[0003] In order to ensure the mass proportion of each component in the asphalt mixture, the utility model aims to propose a mixing system in the asphalt mixture performance testing stage to obtain the asphalt mixture with the required mass proportion of materials. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a mixing system for an asphalt mixture performance testing stage to obtain an asphalt mixture having a required material proportion by mass.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] In a first aspect, the utility model provides a mixing system for an asphalt mixture performance test stage, comprising a solid material output device, an asphalt output device and a mixing device, wherein the solid material output device is arranged in a plurality of groups, and the solid material output device and the asphalt output device are both used to output materials to the mixing device;

[0009] The solid material output device comprises a feeding mechanism and a weighing mechanism, wherein the feeding mechanism is suitable for outputting materials to the weighing mechanism, and the weighing mechanism can be switched between a weighing position for weighing the mass of the materials and a pouring position for pouring out the materials.

[0010] In a technical solution of the utility model, the feeding mechanism comprises a storage part, a feeding part and an output part which are connected in sequence, and the weighing mechanism is supported on the output part and faces the outlet of the output part.

[0011] In a technical solution of the utility model, the weighing mechanism includes a body, a tray supported on the body, a mass sensor for measuring the mass of the tray, and a driving assembly for driving the body to rotate along a horizontal axis, the fixed part of the driving assembly is connected to the output part, and the driving part of the driving assembly is connected to the body;

[0012] When the weighing mechanism is in the weighing position, the tray faces upward and directly faces the outlet of the output part to receive the material outputted from the outlet of the output part;

[0013] When the weighing mechanism is in the pouring position, the tray faces downward to pour the material in the tray into the mixing device.

[0014] In a technical solution of the utility model, the output port of the output part is trumpet-shaped, and the large end of the output port of the output part faces the weighing mechanism.

[0015] In a technical solution of the present utility model, the solid material output device further includes a stop mechanism, and the stop mechanism can be switched between a closed position for sealing the outlet of the feeding part and an open position for opening the outlet of the feeding part;

[0016] The open position corresponds to the working state of the feeding portion, and the closed position corresponds to the stopping state of the feeding portion.

[0017] In a technical solution of the present utility model, the stopping mechanism includes a telescopic driving member and a baffle connected to a driving end of the telescopic driving member, and the telescopic driving member is supported on the output portion.

[0018] In one technical solution of the utility model, the asphalt output device includes a liquid storage chamber and a fixed displacement pump connected to the outlet of the liquid storage chamber, and the fixed displacement pump is suitable for pumping out a set volume of asphalt according to a set time, and then outputting the required mass of asphalt under the premise of known asphalt density.

[0019] In a technical solution of the present utility model, the feeding part is configured as a spiral feeder, and the tail end of the feeding part is inclined upward.

[0020] In a technical solution of the utility model, the solid material output device further includes a processor, which is suitable for receiving information from the mass sensor and controlling the operation of the feeding mechanism, the driving assembly and the stopping mechanism.

[0021] (III) Beneficial effects

[0022] The beneficial effect of the utility model is that in the mixing system of the asphalt mixture performance test stage of the utility model, after the feeding mechanism outputs the material to the weighing mechanism, the weighing mechanism will perform real-time detection of the material quality. After the material quality reaches the required quality, the feeding mechanism stops outputting the material. At the same time, the weighing mechanism switches from the weighing position to the dumping position, and dumps the material stored in the weighing mechanism into the mixing device.

[0023] If there are several types of materials to be mixed, several groups of solid material output devices corresponding to the types of materials are set up. Each output device outputs material to the mixing device. Since the material output by each solid material output device can be set at the required mass, the asphalt mixture will obtain a higher mixing accuracy, thereby ensuring the consistency between the test results of the asphalt mixture and the mass mixing fraction during the performance test. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the structural schematic diagrams of the mixing system of the utility model in the asphalt mixture performance test stage;

[0025] Figure 2 This is the second structural schematic diagram of the mixing system of the utility model in the asphalt mixture performance test stage;

[0026] Figure 3 For this utility model Figure 2 A schematic diagram of the local enlarged structure at B in the middle;

[0027] Figure 4 For this utility model Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0028] Figure 5 It is a side view structural schematic diagram of the weighing mechanism of the utility model when it is in the weighing position;

[0029] Figure 6 It is a side view structural diagram of the weighing mechanism of the utility model when it is in a dumping position;

[0030] Figure 7 A system block diagram of the processor functions.

[0031] [Description of Reference Numerals]

[0032] 1: Solid material output device;

[0033] 11: feeding mechanism; 111: storage part; 112: feeding part; 113: output part;

[0034] 12: weighing mechanism; 121: body; 122: tray; 123: mass sensor; 124: drive assembly;

[0035] 13: stop mechanism; 131: telescopic drive member; 132: baffle;

[0036] 2: Asphalt output device;

[0037] 3: Mixing device;

[0038] 4: Processor. DETAILED DESCRIPTION

[0039] In order to better explain the present invention and facilitate understanding, the following Figure 1-7 , the utility model is described in detail through specific implementation methods. Among them, the directional nouns such as "upper" and "lower" mentioned in this article are Figure 1 The orientation is used as a reference.

[0040] Embodiment 1:

[0041] Reference Figure 1 and Figure 2 An embodiment of the utility model provides a mixing system for an asphalt mixture performance testing stage, comprising a solid material output device 1, an asphalt output device 2 and a mixing device 3, wherein the solid material output device 1 is arranged in multiple groups, and the solid material output device 1 and the asphalt output device 2 are both used to output materials to the mixing device 3; the solid material output device 1 comprises a feeding mechanism 11 and a weighing mechanism 12, the feeding mechanism 11 is suitable for outputting materials to the weighing mechanism 12, and the weighing mechanism 12 can switch between a weighing position for weighing the mass of the material and a pouring position for pouring out the material.

[0042] In this embodiment, after the feeding mechanism 11 outputs the material to the weighing mechanism 12, the weighing mechanism 12 will perform real-time detection of the material quality. After the material quality reaches the required quality, the feeding mechanism 11 stops outputting the material. At the same time, the weighing mechanism 12 switches from the weighing position to the dumping position, and dumps the material stored in the weighing mechanism 12 into the mixing device 3.

[0043] If there are several types of materials to be mixed, several groups of solid material output devices 1 corresponding to the types of materials are set up, and each output device outputs material to the mixing device 3. Since the material output by each solid material output device 1 can be set at the required mass, the asphalt mixture will obtain a higher mixing accuracy, thereby ensuring the consistency between the test results of the asphalt mixture and the mass mixing fraction during the performance test.

[0044] Specifically, the mixing device 3 can be configured as a common stirring mixer, which will not be described in detail here.

[0045] In this embodiment, the asphalt output device 2 includes a liquid storage chamber and a fixed displacement pump connected to the outlet of the liquid storage chamber. The fixed displacement pump is suitable for pumping out a set volume of asphalt according to a set time, and then outputting the required mass of asphalt under the premise of known asphalt density.

[0046] In this embodiment, asphalt is output in a constant flow manner. Since the density of asphalt can be calculated, the constant flow pump can be combined with the working market to obtain the output asphalt volume. Combined with the density of asphalt, the output quality of asphalt can be obtained, that is, the asphalt output device 2 can realize indirect measurement of the output quality of asphalt.

[0047] In this embodiment, the feeding mechanism 11 includes a material storage portion 111 , a feeding portion 112 and an output portion 113 which are connected in sequence. The weighing mechanism 12 is supported on the output portion 113 and faces the outlet of the output portion 113 .

[0048] The feeding portion 112 is configured as a spiral feeder, and the tail end of the feeding portion 112 is inclined upward.

[0049] In this embodiment, the solid material stored in the material section enters the feeding section 112 under the action of gravity, and is output to the output section 113 through the feeding section 112. The output section 113 can make the material fall onto the weighing mechanism 12 under the action of gravity, thereby completing the flow of the material.

[0050] The feeding portion 112 with an upwardly tilted tail end can quickly stop outputting materials after the feeding portion 112 stops working, thereby increasing the response time of the feeding action of the feeding portion 112, and further increasing the material output accuracy of the feeding portion 112; it can also make the material more compactly deposited inside the feeding portion 112 under the action of gravity, thereby increasing the material output amount of the feeding portion 112 per unit time and improving the material output efficiency.

[0051] In this embodiment, the weighing mechanism 12 includes a main body 121, a tray 122 supported on the main body 121, a mass sensor 123 for measuring the mass of the tray 122, and a driving component 124 for driving the main body 121 to rotate along a horizontal axis, wherein the fixed portion of the driving component 124 is connected to the output portion 113, and the driving portion of the driving component 124 is connected to the main body 121; when the weighing mechanism 12 is in the weighing position, the tray 122 faces upward and directly faces the outlet of the output portion 113 to receive the material outputted from the outlet of the output portion 113; when the weighing mechanism 12 is in the pouring position, the tray 122 faces downward to pour the material in the tray 122 into the mixing device 3.

[0052] In this embodiment, the main body 121 serves as a support body for the tray 122 and the quality sensor 123, and may be in the shape of a box with an open top. The tray 122 is slidably connected in the main body 121 and does not make sliding contact with the main body 121, thereby avoiding the negative impact of friction on the detection accuracy of the quality sensor 123 and ensuring the quality detection accuracy of the quality sensor 123.

[0053] The main body 121 can be driven to rotate along a horizontal axis, such as along a left-right axis, through the driving assembly 124. Specifically, the driving assembly 124 includes a rotating driving member and a rotating shaft. The rotating shaft is supported on the output part 113 through a support frame. The rotating driving member can drive the rotating shaft to rotate, and the main body 121 is fixedly connected to the rotating shaft through a connecting member. In this way, when the rotating shaft rotates, the main body 121 can drive the tray 122 to rotate, so that the weighing mechanism 12 completes the position switching.

[0054] The tray 122 directly receives the material output from the output part 113, and its area is larger than the projection of the actual output material of the output part 113 to avoid material splashing and improve weighing stability. At the same time, the tray 122 can be set to a concave form, which can not only increase the storage capacity, but also improve the stability of the material in the tray 122, thereby improving the weighing efficiency and stability of the weighing mechanism 12 during weighing.

[0055] The mass sensor 123 is a conventional technology and will not be described in detail here.

[0056] Furthermore, the output port of the output part 113 is in a trumpet shape, and the large end of the output port of the output part 113 faces the weighing mechanism 12. The output port of the trumpet-shaped output part 113 can play a role in dust accumulation to a certain extent, thereby avoiding a large amount of dust from being raised during the weighing process. At the same time, under the action of the material's own gravity, it is also beneficial for the material to overcome the adhesion between the material and the feeding part 112 and smoothly fall into the tray 122, thereby further improving the weighing accuracy and reliability of the load-bearing device.

[0057] In this embodiment, the solid material output device 1 also includes a stopping mechanism 13, which can switch between a closed position for closing the outlet of the feeding part 112 and an open position for opening the outlet of the feeding part 112; the open position corresponds to the working state of the feeding part 112, and the closed position corresponds to the stopping state of the feeding part 112.

[0058] The stopping mechanism 13 includes a telescopic driving member 131 and a baffle 132 connected to a driving end of the telescopic driving member 131 . The telescopic driving member 131 is supported on the output portion 113 .

[0059] The stop mechanism 13 is used to quickly close the outlet of the feeding mechanism 11. It uses a telescopic driving member 131, such as a cylinder drive, to drive the baffle 132 to close the outlet of the feeding mechanism 11. The stop mechanism 13 is configured to switch to a closed position when the feeding part 112 stops working, so as to prevent the material from being output to the weighing mechanism 12 under the action of inertia;

[0060] It is also configured to switch to the open position while the feeding part 112 is working, so as to avoid affecting the output of the material, which can further improve the output accuracy of the material, and further improve the weighing accuracy of the weighing mechanism 12.

[0061] The use of a cylinder drive can utilize the compressible characteristics of gas to avoid excessive squeezing force between the feeding portion 112 and the baffle 132 , which is beneficial to protecting the baffle 132 and the feeding portion 112 .

[0062] The solid material output device 1 further includes a processor 4, which is adapted to receive information from the mass sensor 123 and control the feeding mechanism 11, the driving assembly 124 and the stopping mechanism 13 to work. Figure 7 In this way, it provides a hardware foundation for the automation and intelligent control of the entire hybrid system, which is conducive to improving the working efficiency of the hybrid system and reducing labor costs.

[0063] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0066] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0067] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A mixing system for asphalt mixture performance testing, characterized in that: It comprises a solid material output device (1), an asphalt output device (2) and a mixing device (3), wherein the solid material output device (1) is arranged in a plurality of groups, and the solid material output device (1) and the asphalt output device (2) are both used to output materials to the mixing device (3); The solid material output device (1) comprises a feeding mechanism (11) and a weighing mechanism (12); the feeding mechanism (11) is suitable for outputting materials to the weighing mechanism (12); and the weighing mechanism (12) is capable of switching between a weighing position for weighing the mass of the material and a pouring position for pouring out the material.

2. The mixing system for the asphalt mixture performance testing phase as claimed in claim 1, characterized in that: The feeding mechanism (11) comprises a material storage portion (111), a feeding portion (112) and an output portion (113) which are connected in sequence, and the weighing mechanism (12) is supported on the output portion (113) and faces an outlet of the output portion (113).

3. The mixing system for the asphalt mixture performance testing phase as claimed in claim 2, characterized in that: The feeding portion (112) is configured as a screw feeder, and the tail end of the feeding portion (112) is inclined upward.

4. The mixing system for the asphalt mixture performance testing phase as claimed in claim 3, characterized in that: The weighing mechanism (12) comprises a body (121), a tray (122) supported on the body (121), a mass sensor (123) for measuring the mass of the tray (122), and a driving assembly (124) for driving the body (121) to rotate along a horizontal axis, wherein a fixed portion of the driving assembly (124) is connected to the output portion (113), and a driving portion of the driving assembly (124) is connected to the body (121); When the weighing mechanism (12) is in the weighing position, the tray (122) faces upward and directly faces the outlet of the output portion (113) to receive the material outputted from the outlet of the output portion (113); When the weighing mechanism (12) is in the pouring position, the tray (122) faces downwards to pour the material in the tray (122) into the mixing device (3).

5. The mixing system for the asphalt mixture performance testing phase as claimed in claim 4, characterized in that: The output port of the output portion (113) is trumpet-shaped, and the large end of the output port of the output portion (113) faces the weighing mechanism (12).

6. The mixing system for the asphalt mixture performance testing phase as claimed in claim 5, characterized in that: The solid material output device (1) further comprises a stop mechanism (13), wherein the stop mechanism (13) is switchable between a closed position for sealing the outlet of the feeding portion (112) and an open position for opening the outlet of the feeding portion (112); The open position corresponds to the working state of the feeding portion (112), and the closed position corresponds to the stopping state of the feeding portion (112).

7. The mixing system for the asphalt mixture performance testing phase as claimed in claim 6, characterized in that: The stopping mechanism (13) comprises a telescopic driving member (131) and a baffle (132) connected to a driving end of the telescopic driving member (131); the telescopic driving member (131) is supported on the output portion (113).

8. A mixing system for asphalt mixture performance testing according to any one of claims 1 to 7, characterized in that: The asphalt output device (2) comprises a liquid storage chamber and a fixed displacement pump connected to the outlet of the liquid storage chamber, wherein the fixed displacement pump is suitable for pumping out a set volume of asphalt according to a set duration, thereby outputting a required mass of asphalt under the premise of known asphalt density.

9. The mixing system for the asphalt mixture performance testing phase as claimed in claim 7, characterized in that: The solid material output device (1) further comprises a processor (4), wherein the processor (4) is adapted to receive information from the mass sensor (123) and control the operation of the feeding mechanism (11), the driving component (124) and the stopping mechanism (13).

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