Asphalt weighing device for asphalt mixing station

Abstract

The utility model discloses an asphalt weighing device for an asphalt mixing station, which comprises a bottom plate, a weighing barrel arranged above the bottom plate, a plurality of weighing sensors arranged between the weighing barrel and the bottom plate, a lifting assembly arranged outside the weighing barrel and arranged on the bottom plate, and a support plate capable of moving up and down and arranged on the lifting assembly. A stirring assembly used for stirring asphalt is installed at the bottom of the supporting plate, lifting scraping assemblies used for scraping the asphalt on the inner wall of the weighing barrel are slidably installed at the two ends of the bottom of the supporting plate, and a discharging pipe is arranged at the bottom of the weighing barrel. Asphalt is stirred through the stirring assembly, so that the asphalt can be uniformly heated and rapidly melted into a fluid state, after the asphalt is completely in the fluid state, the asphalt is discharged through the discharging pipe, and the asphalt on the inner wall of the weighing barrel is scraped from top to bottom through the lifting scraping assembly, so that residual asphalt in the barrel is as little as possible; the weighing accuracy is ensured, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of weighing devices, in particular to an asphalt weighing device for an asphalt mixing station. Background Art

[0002] Asphalt is a dark brown complex mixture of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a kind of high-viscosity organic liquid. It mostly exists in the form of liquid or semi-solid petroleum. The surface is black and it is soluble in carbon disulfide and carbon tetrachloride. Asphalt is an organic gelling material that is waterproof, moisture-proof and anti-corrosive. In the asphalt mixing station, before asphalt is mixed, asphalt and additives need to be weighed to facilitate the staff to adjust the proportion of various raw materials. However, asphalt has a certain viscosity at low temperatures. After weighing, it is easy to stick to the inner wall and is not easy to discharge, which is inconvenient to use.

[0003] When using the existing asphalt weighing device, most of them adopt a heating wire wound on the inner wall or outer wall of the weighing cylinder to make the asphalt in the weighing cylinder in a fluid state, which is convenient for the discharge of the asphalt. However, in actual use, the asphalt close to the inner wall of the weighing cylinder is often in a fluid state, while the asphalt far from the inner wall of the weighing cylinder is still in a viscous state due to uneven heating, resulting in incomplete discharge of the asphalt. Moreover, it takes a long time to wait until the asphalt is completely in a fluid state before being discharged, which reduces the work efficiency;

[0004] Therefore, the applicant proposes an asphalt weighing device for an asphalt mixing plant to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide an asphalt weighing device for an asphalt mixing station.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] An asphalt weighing device for an asphalt mixing plant comprises a base plate, a weighing barrel is arranged above the base plate, a plurality of weighing sensors are arranged between the weighing barrel and the base plate, a lifting assembly located outside the weighing barrel is installed on the base plate, a support plate movable up and down is arranged on the lifting assembly, a stirring assembly for stirring asphalt is installed at the bottom of the support plate, lifting and scraping assemblies for scraping asphalt on the inner wall of the weighing barrel are slidably installed at both ends of the bottom of the support plate, and a discharge pipe is arranged at the bottom of the weighing barrel.

[0008] Furthermore, the lifting assembly includes a screw rod rotatably installed on one end of the base plate and a guide rod installed on the other end of the base plate, a top plate is installed between the screw rod and the top of the guide rod, the screw rod passes through the top plate and is connected to the output end of the first motor, a first connecting plate is threadedly connected to the screw rod, a second connecting plate is slidably provided on the guide rod, and a support plate is installed between the first connecting plate and the second connecting plate.

[0009] Furthermore, the stirring assembly includes a protective box installed at the bottom of the support plate, a second motor is provided in the protective box, an output end of the second motor is connected to a rotating shaft, the rotating shaft extends out of the protective box, and stirring plates are installed on both sides of the rotating shaft, and a plurality of through holes are opened on the stirring plates.

[0010] Furthermore, an annular groove is provided at the bottom of the support plate, and sliding blocks are slidably provided on both sides of the annular groove. The sliding blocks extend out of the annular groove and are connected to the mounting plate, and a lifting scraper assembly is installed on the mounting plate.

[0011] Furthermore, the lifting scraper assembly includes a cylinder installed at the bottom of the mounting plate, a scraper is connected to the telescopic end of the cylinder, the scraper is slidably connected to the outside of the stirring plate, and an opening is opened on the scraper for the rotating shaft and the stirring plate to pass through.

[0012] Furthermore, a heat-insulating layer is provided on the outer wall of the weighing barrel, and a heating wire is coiled inside the heat-insulating layer.

[0013] Furthermore, limit blocks are provided on both sides of the top of the weighing bucket.

[0014] Furthermore, a plurality of balls are rotatably arranged at the bottom of the annular slide groove, and the sliding block is in sliding contact with the surface of the balls.

[0015] Furthermore, a discharge valve is provided on the discharge pipe.

[0016] Furthermore, support legs are installed at both ends of the bottom of the base plate.

[0017] Compared with the prior art, the utility model provides an asphalt weighing device for an asphalt mixing station, which has the following beneficial effects:

[0018] 1. After weighing, the utility model moves the stirring assembly down into the weighing barrel through the lifting assembly, stirs the asphalt through the stirring assembly, so that the asphalt can be heated evenly and quickly melted into a fluid state. After the asphalt is completely in a fluid state, it is discharged through the discharge pipe, and the asphalt on the inner wall of the weighing barrel is scraped from top to bottom through the lifting scraping assembly, so that the residual asphalt in the barrel is as little as possible, ensuring the accuracy of weighing and improving work efficiency.

[0019] 2. The utility model drives the rotating shaft to rotate through the second motor, thereby driving the stirring plate to rotate to stir the asphalt. At this time, the scraper can be driven by the cylinder so that the top surface of the scraper is flush with the top of the weighing barrel, so that the scraper acts as a top cover to prevent the temperature in the weighing barrel from dissipating and accelerate the melting of the asphalt. At the same time, the rotation of the stirring plate drives the scraper to rotate, thereby driving the cylinder to rotate around the rotating shaft, so that the slider slides in the annular groove, which improves the practicality of the device and facilitates subsequent operations of the cylinder and the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the utility model;

[0022] Figure 3 It is a top view structural schematic diagram of the lifting and scraping assembly of the utility model;

[0023] Figure 4 yes Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0024] Markings in the figure: 1. bottom plate; 2. weighing bucket; 3. weighing sensor; 4. lifting assembly; 41. screw rod; 42. guide rod; 43. top plate; 44. first motor; 45. first connecting plate; 46. second connecting plate; 5. support plate; 6. stirring assembly; 61. protection box; 62. second motor; 63. rotating shaft; 64. stirring plate; 65. through hole; 7. lifting scraper assembly; 71. cylinder; 72. scraper; 73. opening; 8. discharge pipe; 9. annular slide; 10. slider; 11. mounting plate; 12. insulation layer; 13. heating wire; 14. limit block; 15. ball; 16. discharge valve; 17. support leg. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0026] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0027] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0030] The utility model provides an asphalt weighing device for an asphalt mixing station, referring to Figures 1 to 4 , including a bottom plate 1, a weighing barrel 2 is arranged above the bottom plate 1, a plurality of weighing sensors 3 are arranged between the weighing barrel 2 and the bottom plate 1, a lifting assembly 4 located outside the weighing barrel 2 is installed on the bottom plate 1, a support plate 5 which can be moved up and down is provided on the lifting assembly 4, a stirring assembly 6 for stirring asphalt is installed at the bottom of the support plate 5, lifting and scraping assemblies 7 for scraping asphalt on the inner wall of the weighing barrel 2 are slidably installed at both ends of the bottom of the support plate 5, and a discharge pipe 8 is provided at the bottom of the weighing barrel 2 to facilitate the discharge of asphalt.

[0031] Specifically, the weighing barrel 2 is a cylindrical structure, and its inner cavity is also a cylindrical structure; the lifting component 4 is provided to facilitate driving the stirring component 6 and the lifting scraper component 7 to move up and down; the discharge pipe 8 can pass through the bottom plate 1 and extend to the bottom of the bottom plate 1.

[0032] Reference Figure 1 and Figure 2In this embodiment, the lifting assembly 4 includes a screw rod 41 rotatably mounted on one end of the base plate 1 and a guide rod 42 mounted on the other end of the base plate 1, a top plate 43 is installed between the screw rod 41 and the top of the guide rod 42, the screw rod 41 passes through the top plate 43 and is connected to the output end of the first motor 44, a first connecting plate 45 is threadedly connected to the screw rod 41, a second connecting plate 46 is slidably provided on the guide rod 42, and a support plate 5 is installed between the first connecting plate 45 and the second connecting plate 46.

[0033] Specifically, the screw rod 41 is rotationally connected to the top plate 43; the stability of the movement of the support plate 5 is improved by providing the guide rod 42; the screw rod 41 and the guide rod 42 are both vertically arranged.

[0034] The first motor 44 is started, and the first motor 44 drives the screw rod 41 to rotate. The screw rod 41 can drive the first connecting plate 45 to move up and down, thereby driving the support plate 5 to move up and down, thereby driving the stirring assembly 6 and the lifting scraper assembly 7 to move up and down.

[0035] Reference Figure 1 In this embodiment, the stirring assembly 6 includes a protection box 61 installed at the bottom of the support plate 5, and a second motor 62 is provided in the protection box 61. The output end of the second motor 62 is connected to a rotating shaft 63, and the rotating shaft 63 extends out of the protection box 61. Stirring plates 64 are installed on both sides of the rotating shaft 63. A plurality of through holes 65 are opened on the stirring plate 64 to accelerate the stirring and mixing of the asphalt and make the asphalt heated more evenly.

[0036] Specifically, the second motor 62 is protected by providing a protective box 61; the second motor 62 is vertically arranged; the axis of the rotating shaft 63 is consistent with the axis of the weighing barrel 2; the rotating shaft 63 and the protective box 61 are rotationally connected; in this embodiment, the number of stirring plates 64 is 4, which are evenly distributed on the circumferential side wall of the rotating shaft 63.

[0037] The second motor 62 is started, and the second motor 62 drives the rotating shaft 63 to rotate, and the rotating shaft 63 drives the stirring plate 64 to rotate, so as to stir the asphalt.

[0038] Reference Figure 4 In this embodiment, an annular groove 9 is provided at the bottom of the support plate 5, and sliders 10 are slidably provided on both sides of the annular groove 9. The sliders 10 extend out of the annular groove 9 and are connected to the mounting plate 11, and the lifting scraper assembly 7 is installed on the mounting plate 11.

[0039] Specifically, the second motor 62 is located in the middle of the annular slide 9; the slider 10 is symmetrically arranged with the axis of the rotating shaft 63; the lifting scraper assembly 7 is installed at the bottom of the mounting plate 11; the longitudinal cross-sectional shape of the annular slide 9 matches the shape of the slider 10, which can be T-shaped or inverted triangle, but is not limited to these shape designs. In the present embodiment, the longitudinal cross-sectional shape of the annular slide 9 and the shape of the slider 10 are T-shaped.

[0040] Among them, refer to Figure 4 In this embodiment, a plurality of balls 15 are rotatably provided at the bottom of the annular slide groove 9 , and the slider 10 is in sliding contact with the surface of the balls 15 .

[0041] Specifically, the slider 10 is in sliding contact with the top surface of the ball 15 , so that the slider 10 can slide better in the annular groove 9 .

[0042] Reference Figure 1 and Figure 3 In this embodiment, the lifting scraper assembly 7 includes a cylinder 71 installed at the bottom of the mounting plate 11, and a scraper 72 is connected to the telescopic end of the cylinder 71. The scraper 72 is slidably connected to the outside of the stirring plate 64, and an opening 73 is opened on the scraper 72 for the rotating shaft 63 and the stirring plate 64 to pass through.

[0043] Specifically, the shape of the scraper 72 is consistent with the shape of the inner cavity of the weighing barrel 2, which is a circular plate, and is consistent with the size of the inner cavity of the weighing barrel 2; the opening 73 is provided to enable the scraper 72 to rotate synchronously with the stirring plate 64, and when the scraper 72 scrapes the asphalt on the inner wall of the weighing barrel 2 from top to bottom, the asphalt on the stirring plate 64 can also be scraped off, ensuring the accuracy of the weighing; the telescopic ends of the two cylinders 71 are connected to the top of the scraper 72; the height of the stirring plate 64 is greater than the height of the inner cavity of the weighing barrel 2, so that the scraper 72 is always outside the stirring plate 64, and at the same time the stirring plate 64 can make the scraper 72 more stable when moving up and down.

[0044] Reference Figure 1 In this embodiment, a heat-insulating layer 12 is provided on the outer wall of the weighing barrel 2 , and a heating wire 13 is coiled inside the heat-insulating layer 12 .

[0045] Specifically, the measuring barrel 2 is heated and insulated by the heat-insulating layer 12; the asphalt is heated by the heating wire 13 so that the asphalt melts into a fluid state, and the heating wire 13 is electrically connected to an external power source.

[0046] Reference Figure 1 and Figure 2 In this embodiment, limit blocks 14 are provided on both sides of the top of the weighing bucket 2.

[0047] Specifically, when the support plate 5 descends, the support plate 5 is limited by the limit block 14 to prevent the rotating shaft 63 from colliding with the bottom of the weighing barrel 2 and causing damage to the weighing barrel 2; preferably, when the support plate 5 contacts the limit block 14, the scraper 72 can be driven by the cylinder 71 so that the top surface of the scraper 72 is flush with the top of the weighing barrel 2, so that the scraper 72 acts as a top cover, thereby preventing the temperature in the weighing barrel 2 from dissipating and accelerating the melting of the asphalt.

[0048] Reference Figure 1 and Figure 2 In this embodiment, a discharge valve 16 is provided on the discharge pipe 8 to facilitate opening or closing the discharge pipe 8.

[0049] Specifically, the discharge valve 16 can be a solenoid valve, which is convenient for the staff to control.

[0050] Reference Figure 1 and Figure 2 In this embodiment, support legs 17 are installed at both ends of the bottom of the base plate 1 to support the base plate 1.

[0051] Specifically, there are four supporting legs 17 , which are distributed at the four corners of the base plate 1 in a rectangular array.

[0052] In this embodiment, the first motor 44, the second motor 62, the cylinder 71 and the heating wire 13 are all existing technologies and will not be described in detail here.

[0053] Working principle: the asphalt can be heated by the heating wire 13 during weighing. After weighing, the first motor 44 is started, and the first motor 44 drives the screw rod 41 to rotate. The screw rod 41 can drive the first connecting plate 45 to move downward, thereby driving the support plate 5 to move downward, so that the stirring plate 64 enters the weighing barrel 2, and then the second motor 62 is started, and the second motor 62 drives the rotating shaft 63 to rotate, and the rotating shaft 63 drives the stirring plate 64 to rotate, so as to stir the asphalt. The rotation of the stirring plate 64 drives the scraper 72 to rotate, thereby driving the cylinder 71 to rotate around the rotating shaft 63, so that the slider 10 slides in the annular groove 9, which improves the practicality of the device. When the asphalt is completely in a fluid state, the discharge pipe 8 is opened to discharge the asphalt, and the scraper 72 is driven by the cylinder 71 to scrape the asphalt on the inner wall of the weighing barrel 2 from top to bottom, so that the residual asphalt in the barrel is as little as possible, ensuring the accuracy of weighing and improving work efficiency.

[0054] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0055] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. An asphalt weighing device for an asphalt mixing plant, comprising a base plate (1), characterized in that: A weighing bucket (2) is provided above the bottom plate (1), a plurality of weighing sensors (3) are provided between the weighing bucket (2) and the bottom plate (1), a lifting assembly (4) located outside the weighing bucket (2) is installed on the bottom plate (1), a support plate (5) movable up and down is provided on the lifting assembly (4), a stirring assembly (6) for stirring asphalt is installed at the bottom of the support plate (5), lifting scraping assemblies (7) for scraping asphalt on the inner wall of the weighing bucket (2) are slidably installed at both ends of the bottom of the support plate (5), and a discharge pipe (8) is provided at the bottom of the weighing bucket (2); The lifting assembly (4) comprises a screw rod (41) rotatably mounted on one end of the bottom plate (1) and a guide rod (42) mounted on the other end of the bottom plate (1); a top plate (43) is mounted between the screw rod (41) and the top of the guide rod (42); the screw rod (41) passes through the top plate (43) and is connected to the output end of the first motor (44); a first connecting plate (45) is threadedly connected to the screw rod (41); a second connecting plate (46) is slidably provided on the guide rod (42); and a support plate (5) is mounted between the first connecting plate (45) and the second connecting plate (46); The stirring assembly (6) comprises a protection box (61) mounted on the bottom of the support plate (5), a second motor (62) is arranged in the protection box (61), an output end of the second motor (62) is connected to a rotating shaft (63), the rotating shaft (63) extends out of the protection box (61), and stirring plates (64) are mounted on both sides of the rotating shaft (63), and a plurality of through holes (65) are formed on the stirring plates (64); An annular slide groove (9) is provided at the bottom of the support plate (5), and sliding blocks (10) are slidably provided on both sides of the annular slide groove (9). The sliding blocks (10) extend out of the annular slide groove (9) and are connected to a mounting plate (11), and a lifting scraper assembly (7) is mounted on the mounting plate (11); The lifting scraper assembly (7) comprises a cylinder (71) mounted on the bottom of the mounting plate (11), a scraper (72) being connected to the telescopic end of the cylinder (71), the scraper (72) being slidably connected to the outside of the stirring plate (64), and an opening (73) for the rotating shaft (63) and the stirring plate (64) to pass through is formed on the scraper (72).

2. The asphalt weighing device for asphalt mixing station according to claim 1, characterized in that: A heat-insulating layer (12) is provided on the outer wall of the weighing barrel (2), and a heating wire (13) is coiled inside the heat-insulating layer (12).

3. The asphalt weighing device for asphalt mixing plant according to claim 1, characterized in that: Limit blocks (14) are provided on both sides of the top of the weighing barrel (2).

4. The asphalt weighing device for asphalt mixing plant according to claim 1, characterized in that: A plurality of balls (15) are rotatably arranged at the bottom of the annular slide groove (9), and the sliding block (10) is in sliding contact with the surface of the balls (15).

5. The asphalt weighing device for asphalt mixing plant according to claim 1, characterized in that: The discharge pipe (8) is provided with a discharge valve (16).

6. The asphalt weighing device for asphalt mixing plant according to claim 1, characterized in that: Support legs (17) are installed at both ends of the bottom of the base plate (1).

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