Standard viscosity tester for asphalt

Abstract

The utility model discloses an asphalt standard viscosity tester which comprises a viscosity tester body and a heating cylinder, the heating cylinder is installed on the upper end face of the viscosity tester body, the heating cylinder is communicated with the interior of the viscosity tester body through a connecting pipe, the heating cylinder is divided into an upper section and a lower section, the upper section is cylindrical, and the lower section is conical. A plurality of groups of stirring rollers are fixedly connected to the outer wall of the rotating rod and are jointly connected with a scraping plate, and the scraping plate is slidably connected to the inner wall of the upper end of the heating cylinder. By arranging the reciprocating lead screw, the scraping plate and the like, the reciprocating lead screw drives the scraping plate to slide on the upper section of the heating cylinder, asphalt attached to the upper section of the heating cylinder can be scraped to the lower section of the heating cylinder, so that the inner wall of the heating cylinder can be kept clean, asphalt accumulation is effectively prevented, and the heating efficiency and the heat transfer effect of equipment are kept at a higher level; meanwhile, waste of samples can be reduced to the greatest extent, and more asphalt is ensured to participate in detection, so that the accuracy of detection data is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of highway asphalt test instruments, in particular to an asphalt standard viscosity tester. Background Art

[0002] Asphalt is a highly viscous, highly elastic, semi-solid or solid substance at room temperature. Its viscosity changes significantly with temperature. High viscosity at room temperature makes measurement more difficult and inaccurate. If it is not heated, the fluidity of asphalt is very poor, making it difficult to accurately measure its viscosity, and thus it is impossible to obtain correct data through standard methods.

[0003] The Chinese utility model with authorization announcement number CN219657428U discloses an asphalt standard viscosity testing device. When in use, the device heats the asphalt through a heating component. During the heating process, part of the asphalt may adhere to the inner wall of the heating device. When the asphalt standard viscosity is subsequently tested, the amount of asphalt sample actually involved in the test is reduced and no longer uniform, affecting the accuracy of subsequent test data. Therefore, it is necessary to redesign the asphalt standard viscosity tester to address the above problem. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an asphalt standard viscosity tester.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The asphalt standard viscosity tester comprises a viscosity tester body and a heating cylinder, wherein the heating cylinder is mounted on the upper end surface of the viscosity tester body, and is connected to the interior of the viscosity tester body through a connecting pipe, and the heating cylinder is divided into two sections, the upper section is cylindrical, and the lower section is conical, and a rotating rod is rotatably connected to the top of the viscosity tester body, and multiple groups of stirring rollers are fixedly connected to the outer wall of the rotating rod, and electric heating wires are installed inside the stirring rollers and the heating cylinder, and a gear 2 is rotatably connected to the upper end of the viscosity tester body, and a reciprocating screw is fixedly connected at the center of the gear 2, and the reciprocating screw is connected to two groups of connecting rods through a connecting mechanism, and the two groups of connecting rods pass through the heating cylinder body and are commonly connected to a scraper, and the scraper is slidably connected to the inner wall of the upper end of the heating cylinder.

[0007] Preferably, the connecting mechanism comprises a screw sleeve threadedly connected to the threaded section of the reciprocating screw, and the two groups of connecting rods are respectively fixed to the outer walls on both sides of the screw sleeve and are symmetrically positioned.

[0008] Preferably, a feed hopper and a side plate are fixedly connected to the upper end of the viscosity tester body, the feed hopper is communicated with the interior of the heating cylinder, and the outer wall of the side plate is L-shaped.

[0009] Preferably, a first gear is rotatably connected to the upper end of the viscosity tester body, and the first gear meshes with a second gear.

[0010] Preferably, limit blocks are fixedly connected to both ends of the reciprocating lead screw, and the radius of the limit block is greater than the radius of the reciprocating lead screw.

[0011] Preferably, a servo motor is fixedly connected to the upper end surface of the side plate, and the end of the output shaft of the servo motor is coaxially and fixedly connected to the first gear.

[0012] The utility model has the following beneficial effects:

[0013] 1. By arranging devices such as a reciprocating lead screw and a scraper, the utility model drives the scraper to slide on the upper section of the heating cylinder by means of the reciprocating lead screw, so as to scrape the asphalt attached to the upper section of the heating cylinder to the lower section of the heating cylinder. In this way, the inner wall of the heating cylinder can be kept clean, effectively preventing the accumulation of asphalt, maintaining the heating efficiency and heat transfer effect of the equipment at a high level, and minimizing the waste of samples at the same time, ensuring that more asphalt participates in the detection, so as to ensure the accuracy of the detection data.

[0014] 2. By arranging devices such as a rotating rod and stirring rollers, the utility model drives multiple groups of stirring rollers to rotate by means of the rotating rod, which can avoid too high or too low local temperature, and at the same time ensure that the finally measured viscosity data is more representative, reflecting the true physical properties of asphalt and improving the reliability of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the asphalt standard viscosity tester proposed by the utility model;

[0016] Figure 2 is Figure 1 a sectional view of the heating cylinder in

[0017] Figure 3 is Figure 2 a schematic structural diagram of components such as the reciprocating lead screw and the scraper in

[0018] In the figure: 1. Viscosity tester body; 2. Heating cylinder; 3. Connecting pipe; 4. Side plate; 5. First gear; 6. Servo motor; 7. Second gear; 8. Connecting rod; 9. Rotating rod; 10. Stirring roller; 11. Scraper; 12. Reciprocating lead screw; 13. Lead screw sleeve; 14. Limit block; 15. Feed hopper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0020] Reference Figures 1 - 3 Figures 1 - 3 , an asphalt standard viscosity tester, includes a viscosity tester body 1 and a heating cylinder 2. The heating cylinder 2 is installed on the upper end face of the viscosity tester body 1. The heating cylinder 2 is internally connected to the viscosity tester body 1 through a connecting pipe 3. The heating cylinder 2 is divided into upper and lower sections. The upper section is cylindrical, and the lower section is conical. A rotating rod 9 is rotatably connected to the inner top of the viscosity tester body 1. A plurality of stirring rollers 10 are fixedly connected to the outer wall of the rotating rod 9. Electric heating wires are installed inside both the stirring rollers 10 and the heating cylinder 2. A second gear 7 is rotatably connected to the upper end of the viscosity tester body 1. A reciprocating lead screw 12 is fixedly connected to the center of the second gear 7. The reciprocating lead screw 12 is connected to two connecting rods 8 through a connecting mechanism. Both groups of connecting rods 8 penetrate through the body of the heating cylinder 2 and are commonly connected to a scraper 11. The scraper 11 is slidably connected to the inner wall of the upper end of the heating cylinder 2. The connecting mechanism includes a lead screw sleeve 13 threadedly connected to the threaded section of the reciprocating lead screw 12. The two connecting rods 8 are respectively fixed to the outer walls on both sides of the lead screw sleeve 13 and are symmetrically positioned with each other;

[0021] Reference Figure 2 And Figure 3 Figure 3 , by means of the sliding of the scraper 11, the asphalt adhering to the inner wall of the heating cylinder 2 can be scraped to the lower section of the heating cylinder 2, that is, the conical part of the heating cylinder 2. By virtue of its inner wall being an inclined plane, it can automatically slide down to the connecting pipe 3, which can minimize the waste of samples and ensure that more asphalt participates in the detection.

[0022] A feed hopper 15 and a side plate 4 are fixedly connected to the upper end of the viscosity tester body 1. The feed hopper 15 is internally connected to the heating cylinder 2. The outer wall of the side plate 4 is L-shaped. A first gear 5 is rotatably connected to the upper end of the viscosity tester body 1. The first gear 5 meshes with the second gear 7. Limiting blocks 14 are fixedly connected to both ends of the reciprocating lead screw 12. The radius of the limiting blocks 14 is greater than the radius of the reciprocating lead screw 12. A servo motor 6 is fixedly connected to the upper end face of the side plate 4. The end of the output shaft of the servo motor 6 is coaxially fixedly connected to the first gear 5;

[0023] Reference Figure 1 And Figure 3 Figure 3 , by driving the rotating rod 9 to rotate with the aid of the servo motor 6, the reciprocating lead screw 12 can be synchronously driven to drive the scraper 11 to slide up and down, so as to synchronously realize multiple functions through a single driving source.

[0024] In the present utility model, the specific function of the device is as follows: When using this device, asphalt is poured into the interior of the heating cylinder 2 through the feed hopper 15, and then the asphalt is heated by the electric heating wire inside the viscosity tester body 1, that is, the stirring roller 10. During this process, the servo motor 6 provided drives the first gear 5 and the rotating rod 9 to rotate, thereby realizing the synchronous rotation of multiple groups of stirring rollers 10, and then the asphalt in the heating cylinder 2 can be mixed and stirred, so that the asphalt is evenly distributed inside the heating cylinder 2, avoiding too high or too low local temperature, and at the same time ensuring that the finally measured viscosity data is more representative, reflecting the true physical properties of the asphalt and improving the reliability of the detection results.

[0025] With the meshing of the first gear 5 and the second gear 7, the reciprocating lead screw 12 can be synchronously driven to rotate. Immediately, the lead screw sleeve 13 on its threaded section drives the scraper 11 to slide reciprocally on the inner wall of the heating cylinder 2. When sliding, the asphalt attached to the upper inner wall of the heating cylinder 2 can be scraped to the lower section of the heating cylinder 2. The inner wall design of the conical structure enables the asphalt to naturally gather downward and go to the bottom connecting pipe 3 area of the heating cylinder 2. In this way, the inner wall of the heating cylinder 2 can be kept clean, effectively preventing the accumulation of asphalt, maintaining the heating efficiency and heat transfer effect of the equipment at a relatively high level, and at the same time minimizing the waste of samples, ensuring that more asphalt participates in the detection, so as to ensure the accuracy of the detection data.

[0026] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. An asphalt standard viscosity tester, comprising a viscosity tester body (1) and a heating cylinder (2), characterized in that: The heating cylinder (2) is mounted on the upper end surface of the viscosity tester body (1). The heating cylinder (2) is connected to the interior of the viscosity tester body (1) through a connecting pipe (3). The heating cylinder (2) is divided into two sections, the upper section is cylindrical, and the lower section is conical. A rotating rod (9) is rotatably connected to the top of the viscosity tester body (1). A plurality of stirring rollers (10) are fixedly connected to the outer wall of the rotating rod (9). Electric heating wires are installed inside the stirring rollers (10) and the heating cylinder (2). A gear 2 (7) is rotatably connected to the upper end of the viscosity tester body (1). A reciprocating screw (12) is fixedly connected to the center of the gear 2 (7). The reciprocating screw (12) is connected to two groups of connecting rods (8) through a connecting mechanism. The two groups of connecting rods (8) penetrate the heating cylinder (2) body and are commonly connected to a scraper (11). The scraper (11) is slidably connected to the inner wall of the upper end of the heating cylinder (2).

2. The asphalt standard viscosity tester according to claim 1, characterized in that: The connection mechanism comprises a screw sleeve (13) threadedly connected to a threaded section of a reciprocating screw (12), and two groups of connecting rods (8) are respectively fixed to the outer walls on both sides of the screw sleeve (13) and are symmetrically positioned.

3. The asphalt standard viscosity tester according to claim 2, characterized in that: A feed hopper (15) and a side plate (4) are fixedly connected to the upper end of the viscosity tester body (1); the feed hopper (15) is connected to the inside of the heating cylinder (2); and the outer wall of the side plate (4) is L-shaped.

4. The asphalt standard viscosity tester according to claim 3, characterized in that: The upper end of the viscosity tester body (1) is rotatably connected to a gear 1 (5), and the gear 1 (5) and the gear 2 (7) are meshed with each other.

5. The asphalt standard viscosity tester according to claim 4, characterized in that: Both ends of the reciprocating screw (12) are fixedly connected to limit blocks (14), and the radius of the limit blocks (14) is greater than the radius of the reciprocating screw (12).

6. The asphalt standard viscosity tester according to claim 5, characterized in that: A servo motor (6) is fixedly connected to the upper end surface of the side plate (4), and the end of the output shaft of the servo motor (6) is coaxially fixedly connected to gear one (5).

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