Uniform heating type asphalt Englan viscosity testing device
By incorporating a turbulence and rotation mechanism within the Engla viscometer, the problem of temperature non-uniformity was solved, thereby achieving greater accuracy and stability in asphalt testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU TRAFFIC ENG TESTING CENT CO LTD
- Filing Date
- 2025-05-06
- Publication Date
- 2026-04-17
AI Technical Summary
The existing Engla viscometer suffers from temperature inhomogeneity in asphalt testing, which affects the accuracy of the test results.
A uniform heating asphalt Engla viscosity test device is used. By setting up a turbulence-inducing mechanism and a rotation mechanism inside the Engla viscometer, the combined movement of the turbulence plate and the rotating ring is used to achieve full mixing of water and uniform heating of asphalt.
This improved the uniformity of water temperature and the stability of asphalt temperature, ensuring the accuracy and reliability of the test results.
Smart Images

Figure CN224137118U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of Engella viscosity testing technology for emulsified asphalt, and in particular to a uniformly heated asphalt Engella viscosity testing device. Background Technology
[0002] The Engla viscosity test for emulsified asphalt is a test method used to determine the flow properties of emulsified asphalt. By heating the emulsified asphalt sample to a specific temperature, the time it takes for it to flow out of a standard outlet hole is measured using an Engla viscometer, and compared with the outflow time of water under the same conditions to calculate the Engla viscosity value.
[0003] The Engla viscometer is a classic instrument used to measure the viscosity of liquids. It mainly consists of a constant temperature water bath, a viscometer cup, an outlet orifice, and a receiving bottle. Its working principle is to calculate the viscosity of the liquid by measuring the time it takes for a certain volume of liquid to flow out of the outlet orifice at a specific temperature.
[0004] Engla viscometers typically use a water bath for insulation and heating to maintain asphalt samples under constant temperature conditions during testing. The water in the water bath is usually heated by an electric heating tube. However, the heating area of the electric heating tube is concentrated, resulting in uneven water temperature distribution and local temperature differences, which affect the temperature uniformity of the asphalt sample. These temperature differences will affect the asphalt viscosity test results. To address this issue, a uniformly heated asphalt Engla viscosity testing device is proposed. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a uniformly heated asphalt Engla viscosity test device, which aims to improve the problem of "the potential for uneven temperature in asphalt during the test" mentioned in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a uniformly heated asphalt Engla viscosity testing device, comprising an Engla viscometer, an electric heating tube fixedly installed on the inner wall of the Engla viscometer, a partition fixedly installed on the inner wall of the Engla viscometer, a holding bucket placed in the middle of the partition, a flow-turbating mechanism provided inside the Engla viscometer, a rotating mechanism provided at the bottom of the partition, the flow-turbating mechanism including a flow-turbating plate, the flow-turbating plate being hinged to the inner wall of the Engla viscometer, a through groove being provided on the flow-turbating plate, a sliding plate being slidably connected through the inner wall of the partition, a horizontal plate being fixedly installed at the bottom of the sliding plate, a horizontal bar being fixedly installed on the side wall of the horizontal plate, a sliding groove being provided on the horizontal plate, a motor being fixedly installed on the upper surface of the Engla viscometer, a rotating shaft being fixedly installed at the output end of the motor, and an L-shaped rod being fixedly installed on the outer wall of the rotating shaft.
[0007] As a further description of the above technical solution:
[0008] The rotating mechanism includes a rotating ring, which is rotatably connected to the inner wall of the partition. A rubber pad is fixedly installed on the top of the rotating ring, and a gear is fixedly installed on the bottom of the rotating ring.
[0009] As a further description of the above technical solution:
[0010] A slider is slidably connected to the bottom of the partition, and a rack is fixedly installed on the side wall of the slider, the rack meshing with a gear.
[0011] As a further description of the above technical solution:
[0012] The slide plate has inclined grooves.
[0013] As a further description of the above technical solution:
[0014] A guide rod is fixedly installed on the side of the slider near the slide plate, and the outer wall of the guide rod is attached to the inner wall of the inclined groove.
[0015] As a further description of the above technical solution:
[0016] The outer wall of the crossbar is attached to the inner wall of the through groove.
[0017] As a further description of the above technical solution:
[0018] The outer wall of the L-rod is attached to the inner wall of the groove.
[0019] As a further description of the above technical solution:
[0020] The container is located inside the rotating ring.
[0021] This utility model has the following beneficial effects:
[0022] 1. In this utility model, the water inside the Engler viscometer is repeatedly disturbed by the reciprocating rotation of the baffle plate, so that the water closer to the heating element and the water farther away can be fully mixed, thereby improving the water temperature uniformity and avoiding the impact of water temperature difference on the heat preservation effect of the asphalt.
[0023] 2. In this utility model, the rotating ring and rubber pad drive the container to rotate, which allows the surface of the container to come into contact with hot water at different locations inside the Engla viscometer. This ensures that the asphalt inside the container is heated evenly, thereby further guaranteeing the temperature stability during the asphalt experiment. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0025] Figure 2This is a schematic cross-sectional view of the Engla viscometer of this invention.
[0026] Figure 3 This is a schematic diagram of the partition of this utility model from a bottom view.
[0027] Figure 4 This utility model Figure 2 A magnified structural diagram at point A.
[0028] Legend:
[0029] 1. Engla viscometer; 2. Heating element; 3. Baffle; 4. Container; 5. Flow control mechanism; 51. Flow deflector; 52. Through slot; 53. Slide plate; 54. Horizontal plate; 55. Horizontal bar; 56. Slide groove; 57. Motor; 58. Shaft; 59. L-bar; 6. Rotating mechanism; 61. Rotating ring; 62. Rubber pad; 63. Gear; 64. Sliding block; 65. Rack; 66. Guide rod; 67. Inclined groove. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Reference Figures 1-3 This utility model provides an embodiment of a uniformly heated asphalt Engla viscosity testing device, including an Engla viscometer 1 (also called an Engla viscometer, which is existing technology and will not be described in detail here). An electric heating tube 2 is fixedly installed on the inner wall of the Engla viscometer 1. A partition 3 is fixedly installed on the inner wall of the Engla viscometer 1. A holding container 4 is placed in the middle of the partition 3. A barrel rim is provided on the top of the holding container 4, and the diameter of the barrel rim is larger than the diameter of the holding container 4. The holding container 4 is supported on the top of the partition 3 via the barrel rim. A flow turbulence mechanism 5 is provided inside the Engla viscometer 1, and a rotation mechanism 6 is provided at the bottom of the partition 3.
[0032] Reference Figures 2-4The turbulence mechanism 5 includes a turbulence plate 51, which is hinged to the inner wall of the Engla viscometer 1. The reciprocating rotation of the turbulence plate 51 allows for sufficient convection of the water inside the Engla viscometer 1, preventing large temperature differences. A through groove 52 is provided on the turbulence plate 51, through which a sliding plate 53 is slidably connected. A horizontal plate 54 is fixedly installed at the bottom of the sliding plate 53. As the sliding plate 53 slides up and down against the inner wall of the partition 3, it drives the horizontal plate 54 to move up and down inside the Engla viscometer 1. A horizontal rod 55 is fixedly installed on the side wall of the horizontal plate 54, and the outer wall of the horizontal rod 55 is attached to the inner wall of the through groove 52. The movement of the horizontal plate 54 up and down... The reciprocating movement of the crossbar 55 and the through groove 52 can drive the baffle 51 to reciprocate on the inner wall of the Engla viscometer 1. A sliding groove 56 is provided on the crossbar 54. The rotation of the rotating shaft 58, in conjunction with the L-rod 59 and the sliding groove 56, can drive the slide plate 53 to slide up and down on the inner wall of the partition 3. A motor 57 is fixedly installed on the upper surface of the Engla viscometer 1. A rotating shaft 58 is fixedly installed at the output end of the motor 57. An L-rod 59 is fixedly installed on the outer wall of the rotating shaft 58. The outer wall of the L-rod 59 is attached to the inner wall of the sliding groove 56. When the motor 57 is started, it drives the rotating shaft 58 to rotate. As the rotating shaft 58 rotates, it drives the L-rod 59 to reciprocate against the inner wall of the sliding groove 56.
[0033] Reference Figure 2 and Figure 4 The rotating mechanism 6 includes a rotating ring 61, which is rotatably connected to the inner wall of the partition 3. The container 4 is located inside the rotating ring 61. The rotation of the rotating ring 61 causes the container 4 to rotate synchronously, ensuring that the asphalt inside is heated evenly. A rubber pad 62 is fixedly installed on the top of the rotating ring 61 to enhance the friction between the top of the rotating ring 61 and the container 4. A gear 63 is fixedly installed on the bottom of the rotating ring 61, and a slider 64 is slidably connected to the bottom of the partition 3. A rack 65 is fixedly installed on the side wall of the slider 64. The rack 65 meshes with the gear 63. When the slider 64 slides back and forth, it can drive the rotating ring 61 to rotate back and forth on the inner wall of the partition 3 in conjunction with the rack 65 and the gear 63. A sloping groove 67 is provided on the slide plate 53. A guide rod 66 is fixedly installed on the side of the slider 64 near the slide plate 53. The outer wall of the guide rod 66 is attached to the inner wall of the sloping groove 67. When the slide plate 53 slides up and down, it can drive the slider 64 to slide back and forth at the bottom of the partition 3 in conjunction with the sloping groove 67 and the guide rod 66.
[0034] Working principle: During use, the asphalt to be tested is poured into the container 4. The water inside the Engla viscometer 1 is heated by the heating element 2, and the heated water is used to keep the asphalt inside the container 4 warm. At the same time, the motor 57 is started to drive the rotating shaft 58 to rotate. As the rotating shaft 58 rotates, it drives the L rod 59 to move back and forth against the inner wall of the slide 56. Simultaneously, the L rod 59 pushes and pulls the slide plate 53 up and down, causing the slide plate 53 to slide up and down against the inner wall of the partition 3. During the up and down sliding of the slide plate 53, it drives the horizontal plate 54 to move against the Engla viscometer 1. The inside of the viscometer 1 moves up and down repeatedly. While the horizontal plate 54 moves up and down repeatedly, it also drives the horizontal bar 55 to move back and forth against the inner wall of the through groove 52. At the same time, the horizontal bar 55 pushes and pulls the baffle 51 up and down repeatedly, causing the baffle 51 to rotate back and forth on the inner wall of the Engla viscometer 1. During the reciprocating rotation of the baffle 51, the water inside the Engla viscometer 1 is disturbed, so that the water inside the Engla viscometer 1 can be fully convected. This allows the water closer to the heating tube 2 and the water farther away to be fully mixed, avoiding the temperature difference of the water from affecting the heat insulation effect of the asphalt.
[0035] As the slide plate 53 slides back and forth on the inner wall of the partition 3, it drives the inclined groove 67 to press the guide rod 66 back and forth. This causes the guide rod 66 to drive the slider 64 to slide back and forth at the bottom of the partition 3. As the slider 64 slides back and forth, it drives the rack 65 to move back and forth synchronously. As the rack 65 moves back and forth, it drives the gear 63 meshing with it to rotate back and forth. As the gear 63 rotates back and forth, it drives the rotating ring 61 to rotate back and forth on the inner wall of the partition 3. As the rotating ring 61 rotates, it uses the friction of the rubber pad 62 to drive the container 4 inside it to rotate back and forth synchronously. Through the back and forth rotation of the container 4, its outer wall can come into contact with water at different positions inside the Engela viscometer 1, so that the asphalt loaded inside the container 4 can be heated evenly, further improving the temperature stability of the asphalt.
[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A homogenizing type asphalt Engler viscosity testing device comprising an Engler viscometer (1), characterized in that: An electric heating tube (2) is fixedly installed on the inner wall of the Engla viscometer (1). A partition (3) is fixedly installed on the inner wall of the Engla viscometer (1). A container (4) is placed in the middle of the partition (3). A flow-turbing mechanism (5) is provided inside the Engla viscometer (1). A rotating mechanism (6) is provided at the bottom of the partition (3). The flow-turbing mechanism (5) includes a flow-turbing plate (51). The flow-turbing plate (51) is hinged to the inner wall of the Engla viscometer (1). An opening is provided on the flow-turbing plate (51). A through groove (52) is provided. A slide plate (53) is slidably connected through the inner wall of the partition (3). A horizontal plate (54) is fixedly installed at the bottom of the slide plate (53). A horizontal bar (55) is fixedly installed on the side wall of the horizontal plate (54). A sliding groove (56) is provided on the horizontal plate (54). A motor (57) is fixedly installed on the upper surface of the Engla viscometer (1). A rotating shaft (58) is fixedly installed at the output end of the motor (57). An L rod (59) is fixedly installed on the outer wall of the rotating shaft (58).
2. The device for testing Engler viscosity of asphalt according to claim 1, wherein: The rotating mechanism (6) includes a rotating ring (61), which is rotatably connected to the inner wall of the partition (3). A rubber pad (62) is fixedly installed on the top of the rotating ring (61), and a gear (63) is fixedly installed on the bottom of the rotating ring (61).
3. The device for testing Engler viscosity of asphalt according to claim 1, wherein: The bottom of the partition (3) is slidably connected to a slider (64), and a rack (65) is fixedly installed on the side wall of the slider (64), and the rack (65) meshes with a gear (63).
4. The device for testing Engler viscosity of asphalt according to claim 1, wherein: The slide plate (53) has a sloping groove (67).
5. The device for testing Engler viscosity of asphalt according to claim 3, wherein: A guide rod (66) is fixedly installed on the side of the slider (64) near the slide plate (53), and the outer wall of the guide rod (66) is attached to the inner wall of the inclined groove (67).
6. The device for testing Engler viscosity of asphalt according to claim 1, wherein: The outer wall of the crossbar (55) is attached to the inner wall of the through groove (52).
7. The device for testing Engler viscosity of asphalt according to claim 1, wherein: The outer wall of the L rod (59) is attached to the inner wall of the groove (56).
8. The device for testing Engler viscosity of asphalt according to claim 1, wherein: The container (4) is located inside the rotating ring (61).