Partitioned heating drawer type asphalt and asphalt mixture drying oven

Abstract

The utility model provides a design idea of a drawer type asphalt and asphalt mixture heating oven based on a partition heating principle, and relates to a design scheme of an oven for heating asphalt and asphalt mixture, which can be widely applied to laboratories. According to the design scheme, the problems that an existing asphalt and asphalt mixture heating oven is poor in flexibility, large in power consumption, tedious in operation and the like are solved. Compared with a traditional drying oven, the device is more flexible, convenient and energy-saving to heat asphalt and asphalt mixtures. The drying oven is provided with the combined drawers capable of meeting the requirements of different heating spaces, temperature control of the different heating spaces is achieved according to the partition heating principle, heating energy consumption generated by surplus spaces is avoided, the aging phenomenon of asphalt and asphalt mixtures in the heating process can be effectively delayed, and the quality of materials is guaranteed. The air extractor is arranged at the top of the drying oven and can be connected with an exhaust device of a laboratory, so that flue gas generated in the heating process of the asphalt and the asphalt mixture is treated, and the experiment safety is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt materials and zoned heating, in particular to an oven for heating asphalt materials of different types, different doses and different containing containers in a laboratory. Background Art

[0002] Oven heating is a heating method specified by the current specifications of pavement engineering. It has the characteristics of simple equipment and constant temperature, and is widely used in asphalt and asphalt mixture experiments. However, traditional oven heating has the defects of bulky equipment, long heating time, and high energy consumption. In particular, when heating different material volumes, different material containers, and different test temperatures, traditional ovens often need to open multiple ovens to achieve the heating operation. The use of multiple ovens not only takes up a lot of laboratory space and wastes more electricity, but also makes the heating operation steps more cumbersome, making it difficult to complete the operation requirements of complex tests efficiently and orderly. The limitations of the instrument itself make the heating efficiency of asphalt materials low in asphalt and asphalt mixture laboratories. Combined with the labor cost during the test and the characteristics of heating aging of asphalt materials themselves, these problems have caused great obstacles for laboratory experimenters to complete the test efficiently. At present, there is a lack of asphalt and asphalt mixture heating ovens in asphalt laboratories that can simultaneously carry out different types of materials, different heating temperatures, and adapt to containers of different sizes.

[0003] The principle of zone heating is to separate the preheating zone from the high temperature zone and use partitions to isolate it from the outside air, so as to achieve a relatively ideal temperature curve. The positions of different materials are reasonably allocated through the heating curve, so as to meet the efficiency requirements when heating different materials. Different from the traditional overall heating concept, the zone heating system can effectively improve the heating efficiency, shorten the heating time and reduce the power loss caused by ineffective heating. The idea of ​​drawer partition mainly solves the problem of containers of different sizes for asphalt and asphalt mixture. Through the combination of drawers of different drawers and the use of specially designed buckles to control the size of the drawers, the heating space inside the oven can be used more flexibly, reducing the ineffective heating caused by space waste during the use of the oven.

[0004] Applying the zone heating technology to the heating ovens for asphalt and asphalt mixtures can improve the automation level of laboratory oven heating, reduce the space occupied by multiple ovens, and save manpower and electricity consumption. The idea of ​​drawer combination can further improve the convenience and feasibility of heating. Therefore, the drawer-type heating oven based on zone heating technology has a wide range of application scenarios in asphalt and asphalt mixture laboratories. Utility Model Content

[0005] In view of the deficiencies in the prior art, the technical problem that the utility model intends to solve is to propose a drawer-type asphalt and asphalt mixture heating oven based on the zone heating principle.

[0006] The technical solution adopted by the utility model to solve the technical problem is:

[0007] A drawer-type asphalt and asphalt mixture heating oven based on zoned heating technology, including an exhaust device on the top, four universal wheels with self-locking devices on the bottom, a heating instrument panel on the left (temperature setting area), four layers of heating drawers on the right, and a drawer buckle on the right side of the oven. The buckle can be used in combination with different drawers, and the combined and fixed drawers form a new whole, so as to meet the requirements of different containers for the size of the heating space.

[0008] There is an exhaust device on the top, which can be connected to the air extraction device to control the absorption of smoke generated by asphalt and asphalt mixture during the heating process. There are four universal wheels at the bottom, which can be used to move the oven, so that the experimenter can flexibly adjust the position of the oven. The top exhaust device can be connected to the exhaust system through position adjustment, so that the oven can effectively discharge toxic smoke during use and reduce the harm to the experimenter. In the heating area, a total of four layers of drawers are set, of which the height of the first and second layers of drawers is 20cm, a total of 40cm, and the third and fourth layers of drawers are 30cm, a total of 60cm. Through the connection of the buckle, it can be composed of 40cm, 50cm, 60cm and more sizes. Four layers of heating tubes are set on both sides of the heating zone on the right side of the oven. Use the left partition heating device to control and select the heating tube that needs to be heated to set the heating zone and preheating zone. The four layers of heating tubes are all made of iron wire tungsten metal heating tubes, the heating temperature range is 50℃-500℃, and the temperature control accuracy is ±0.5℃. There is a three-hole plug at the bottom of the oven, which is responsible for powering the oven. The input adopts 220V laboratory voltage and is connected with a ground wire to prevent leakage of the external metal shell of the oven.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model provides a design concept of a drawer-type asphalt and asphalt mixture heating oven based on the principle of zoned heating, which is an oven design scheme for heating asphalt and asphalt mixture that can be widely used in laboratories. This design scheme overcomes the problems of existing asphalt and asphalt mixture heating ovens, such as lack of flexibility, power consumption, cumbersome operation, and large footprint. Compared with traditional heating ovens, this device is more flexible, convenient, and energy-saving for heating asphalt and asphalt mixtures. The oven is provided with heat preservation and heating functions, which can effectively delay the aging of asphalt and asphalt mixtures during the heating process, and ensure the quality of the test asphalt materials. The design is provided with an exhaust device on the top of the oven, which can be connected to the exhaust device of the existing laboratory to treat the smoke generated during the heating process of asphalt and asphalt mixtures, thereby reducing the impact on the environment and the life and health of experimenters. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model from the left side of the oven;

[0012] Figure 2 It is a schematic diagram of the overall structure of the utility model from the right side of the oven;

[0013] Figure 3 It is a front view of the utility model when the oven is closed;

[0014] Figure 4 This is a detailed view of the metal tungsten heating tube and drawer guide rail inside the oven of the utility model;

[0015] Figure 5 This is a detailed diagram of the combined buckle of the oven drawer of the utility model;

[0016] Figure 6 This is a detailed diagram of the utility model oven combining two layers of drawers into a new heating space through buckles;

[0017] In the figure, 1 is the first drawer, 2 is the second drawer, 3 is the third drawer, 4 is the fourth drawer, 5 is the oven temperature controller, 6 is the bottom universal wheel, 7 is the heat dissipation hole on the left side of the oven exterior, 8 is the oven door, 9 is the exhaust port on the top of the oven, 10 is the drawer combination buckle (magnetic), 11 is the iron wire tungsten metal heating tube, 12 is the drawer guide bar, 13 is the spring telescopic tube, 14 is the magnetic block, 15 is the buckle use direction indicator, 16 is the telescopic support plate, 17 is the fixed support plate, and 18 is the drawer guide groove. DETAILED DESCRIPTION

[0018] The utility model is a drawer-type asphalt and asphalt mixture heating oven based on zone heating technology (see Figure 1-6 ), the specific implementation method of the utility model is described in detail below with reference to the accompanying drawings and examples, which is not intended to limit the scope of protection of the present application.

[0019] The utility model is a drawer-type asphalt and asphalt mixture heating oven device based on the principle of zoned heating. Before the test begins, first check whether the universal wheel 6 at the bottom is completely self-locking and fixed and whether the heat dissipation hole 7 on the left side of the outside of the oven is blocked. When performing the test operation, a suitable heating drawer combination can be selected according to the size of the container containing the asphalt or asphalt mixture. For example, when the height of the container is less than 20cm, the first-layer drawer 1 or the second-layer drawer 2 can be selected for heating; when the height of the container is greater than 20cm and less than 30cm, the third-layer drawer 3 or the fourth-layer drawer 4 can be selected for heating; when the height of the container is greater than 30cm and less than 40cm, the drawer bottom plate of the first-layer drawer 1 between the first-layer drawer 1 and the second-layer drawer 2 can be removed, and the first-layer drawer 1 and the second-layer drawer 2 can be combined into a heating space with a height of 40cm through the buckle 10 on the right side of the device; when the height of the container is greater than When the height of the container is greater than 40cm and less than 50cm, the bottom plate of the second drawer 2 between the second drawer 2 and the third drawer 3 can be removed, and the second drawer 2 and the third drawer 3 can be combined into a heating space with a height of 50cm through the buckle 10 on the right side of the device; when the height of the container is greater than 50cm and less than 60cm, the bottom plate of the third drawer 3 between the third drawer 3 and the fourth drawer 4 can be removed, and the third drawer 3 and the fourth drawer 4 can be combined into a heating space with a height of 60cm through the buckle 10 on the right side of the device. According to the test requirements, after completing the combination of the heating space, insert the three-hole plug, turn on the exhaust device 9 on the upper side of the oven, set the required heating temperature through the oven temperature setter 5, and when the heating space reaches the required temperature, put the container containing asphalt or asphalt mixture into the oven, set the heating time through the oven temperature setter 5, and when the heating operation meets the time required by the specification, the experimenter can wear heat-insulating gloves to take out the container containing the test material, and then turn off the oven switch, cut off the power supply, and complete the heating operation.

[0020] When there are multiple heating requirements, for example, material A is contained in a 12 cm beaker and needs to be heated to 160°C; material B is contained in a 12 cm beaker and needs to be heated to 140°C, material A can be placed in the middle of the first layer drawer 1, and material B can be placed in the middle of the second layer drawer 2. The oven temperature controller 5 is adjusted to set the first layer heating tube to 160°C and the second layer heating tube to 140°C for heating treatment to achieve the purpose of zoned heating.

[0021] Anything not described in the present invention is applicable to the prior art.

Claims

1. A zoned heating drawer-type asphalt and asphalt mixture heating oven, comprising a universal wheel and an oven part: characterized in that: The oven also includes an exhaust device on the top, a heating instrument panel on the left, a four-layer heating drawer on the right, and a drawer buckle on the right side of the oven exterior; the drawer buckle can be used in combination with different drawers, and the combined and fixed drawers form a new heating space; an exhaust device is provided on the top, which is connected to the air extraction device to absorb asphalt fume.

2. The drawer-type asphalt and asphalt mixture heating oven with zoned heating according to claim 1 is characterized in that: The heating space of the heating drawer includes two parts: the insulation zone and the high temperature zone. The temperature curve between the insulation zone and the high temperature zone can achieve the heating temperature requirements of different materials when the oven is used.

3. The drawer-type asphalt and asphalt mixture heating oven with zoned heating according to claim 1 is characterized in that: Drawer clips can be used to assemble drawers into heating spaces of different sizes to meet the requirements of different containers for heating space sizes.

4. The drawer-type asphalt and asphalt mixture heating oven with zoned heating according to claim 1 is characterized in that: A universal wheel with a self-locking device is provided at the bottom of the oven, through which the position of the oven can be adjusted. An exhaust device is provided on the top, so that the top exhaust device is connected to the existing laboratory exhaust device to absorb the smoke generated by the experimental heating.

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