Asphalt mixture heating energy-saving device

Abstract

The utility model discloses an asphalt mixture heating energy-saving device which comprises an asphalt heating box, a heat transfer guide pipe capable of moving longitudinally is horizontally arranged in the asphalt heating box, and a heat transfer medium inlet and a heat transfer medium outlet are formed in the two ends of the heat transfer guide pipe respectively. The upper end face of the asphalt heating box is provided with a telescopic heat transfer medium leading-in assembly communicating with the heat transfer medium inlet and a telescopic heat transfer medium leading-out assembly communicating with the heat transfer medium outlet. Longitudinal displacement components used for enabling the heat transfer guide pipe to move longitudinally are further symmetrically arranged at the left end and the right end of the asphalt heating box. According to the asphalt heating device disclosed by the utility model, the asphalt can be indirectly heated when heat conduction oil heated by the heat conduction oil furnace passes through the interior of the heat transfer guide pipe, and the longitudinal displacement part for enabling the heat transfer guide pipe to longitudinally move is arranged on the asphalt heating box; and the heat transfer guide pipe can move up and down during heat exchange with the asphalt to realize heat exchange of the asphalt above the interior of the asphalt heating box, so that the uniformity of indirect heating of the asphalt is improved, local heating of the bottom of the asphalt is avoided, and the asphalt heating box has a certain energy-saving advantage.

Description

Technical Field

[0001] The utility model belongs to the technical field of asphalt production equipment, and in particular relates to an asphalt mixture heating energy-saving device. Background Art

[0002] Asphalt mixture is made according to the predetermined mix ratio. After the sand, gravel and asphalt are accurately weighed, they are put into the mixing tank (the stone powder cold material is directly added into the mixing tank manually) and fully mixed, so that the asphalt penetrates and covers the dry and clean surface of the sand and gravel, forming a uniform sticky film and bonding together. The hot material is transported to the construction site, and the slab is formed through paving and rolling. The temperature of the mixture out of the construction site is about 140-165℃.

[0003] The heating of asphalt mixture is divided into two parts, the heating of sand and gravel and the heating of asphalt. Among them, the heating temperature of asphalt is too high, the local temperature is too high or the heating time is too long, which will affect the quality and performance of asphalt to varying degrees, thereby affecting the quality of the project. It is strictly forbidden to use open flame heating. Open flame heating and electric heater heating are relatively dangerous. Uneven heating can easily cause local overheating and cause asphalt aging and deterioration. If conditions permit, high-temperature heating should be eliminated and medium-temperature heating should be adopted. Thermal oil heating is a common method for medium-temperature heating, that is, organic heat carrier is used as a heat transfer medium to indirectly heat asphalt. The temperature of thermal oil is controlled at about 180℃, which can effectively prevent asphalt from aging and deterioration due to excessive temperature.

[0004] In the existing asphalt heating methods, the heat exchange pipes used to heat asphalt are mostly arranged at the bottom of the asphalt heating box. For example, an asphalt heating and extraction device disclosed in application number CN202122397511.X has a heating pipe arranged at the bottom of the heating box. This arrangement easily causes uneven heating of the asphalt. In order to heat the asphalt in the upper part of the heating box, the heating time needs to be extended, which easily leads to energy waste and is not conducive to the heating construction of asphalt. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an asphalt mixture heating energy-saving device to solve the technical problems raised in the background technology.

[0006] The utility model provides the following technical solutions:

[0007] An asphalt mixture heating energy-saving device comprises an asphalt heating box, wherein a heat transfer conduit which can be moved longitudinally is horizontally arranged inside the asphalt heating box, a heat transfer medium inlet and a heat transfer medium outlet are respectively arranged at the two ends of the heat transfer conduit, a retractable heat transfer medium introduction component connected to the heat transfer medium inlet and a retractable heat transfer medium outlet component connected to the heat transfer medium outlet are arranged on the upper end surface of the asphalt heating box, and longitudinal displacement components for moving the heat transfer conduit longitudinally are also symmetrically arranged at the left and right ends of the asphalt heating box.

[0008] Preferably, the heat transfer conduit is arranged horizontally in a serpentine shape.

[0009] Preferably, the outer wall of the asphalt heating box is provided with a thermal insulation layer.

[0010] Preferably, the longitudinal displacement component includes a guide assembly, which includes a connecting plate for connecting to the outer wall of the heat transfer conduit, a first connecting seat and a second connecting seat are symmetrically arranged at the left and right ends of the connecting plate, a first guide rod is vertically arranged on the first connecting seat, and a second guide rod is vertically arranged on the second connecting seat, and guide cylinders compatible with the first guide rod and the second guide rod are respectively arranged on the left and right sides of the upper end surface of the asphalt heating box.

[0011] Preferably, a plurality of guide assemblies are provided, and the plurality of guide assemblies are evenly arranged at equal intervals along the front-to-back direction of the heat transfer pipe.

[0012] Preferably, the longitudinal displacement component also includes a lifting assembly, the lifting assembly includes a first lifting plate and a second lifting plate, the lower end surface of the first lifting plate is connected to the upper ends of several first guide rods, and the lower end surface of the second lifting plate is connected to the upper ends of several second guide rods.

[0013] Preferably, the lifting assembly also includes a first lifting cylinder and a second lifting cylinder, the first lifting cylinder and the second lifting cylinder are symmetrically arranged at the upper ends of the left and right sides of the asphalt heating box, and the first lifting cylinder and the second lifting cylinder are both arranged vertically upward, the piston rod end of the first lifting cylinder is connected to the middle part of the first lifting plate through a third connecting seat, and the piston rod end of the second lifting cylinder is connected to the middle part of the second lifting plate through a fourth connecting seat.

[0014] Preferably, the first lifting cylinder and the second lifting cylinder are lifted and lowered synchronously.

[0015] Preferably, the retractable heat transfer medium introduction assembly includes a vertically arranged outer sleeve, the upper end of the outer sleeve is connected to a heat transfer medium input pipe, the lower end of the outer sleeve is connected to the upper end surface of the asphalt heating box, an inner sleeve is coaxially arranged inside the outer sleeve, an annular piston is coaxially arranged at the upper end of the inner sleeve, the outer side surface of the annular piston is matched with the inner wall of the outer sleeve, and the lower end of the inner sleeve is connected to the heat transfer medium inlet.

[0016] Preferably, the retractable heat transfer medium export assembly includes a second outer sleeve arranged vertically, the upper end of the second outer sleeve is connected to a heat transfer medium output pipe, the lower end of the second outer sleeve is connected to the upper end surface of the asphalt heating box, a second inner sleeve is coaxially arranged inside the second outer sleeve, a second annular piston is coaxially arranged at the upper end of the second inner sleeve, the outer side surface of the second annular piston is matched with the inner wall of the second outer sleeve, and the lower end of the second inner sleeve is connected to the heat transfer medium outlet.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model discloses an energy-saving device for heating asphalt mixture. A retractable heat transfer medium introduction group and a retractable heat transfer medium outlet assembly are respectively arranged at the two ends of the heat transfer pipe. When the heat transfer oil heated by the heat transfer oil furnace passes through the inside of the heat transfer pipe, heat exchange with the asphalt can be achieved, thereby achieving indirect heating of the asphalt. A longitudinal displacement component for longitudinally moving the heat transfer pipe is arranged on the asphalt heating box, thereby enabling the heat transfer pipe to move up and down when exchanging heat with the asphalt, thereby achieving heat exchange with the asphalt above the asphalt heating box, improving the uniformity of indirect heating of the asphalt, avoiding local heating of the bottom of the asphalt, reducing the time required for heating, reducing the working time of the heat transfer oil furnace, reducing energy waste, and having certain energy-saving advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a top view schematic diagram of the utility model.

[0021] Figure 2 For this utility model Figure 1 Schematic diagram of the cross-sectional view at AA.

[0022] Figure 3For this utility model Figure 2 Schematic diagram of the cross-section at BB.

[0023] Figure 4 It is a schematic diagram of the structure of the retractable heat transfer medium introduction component of the utility model.

[0024] Figure 5 This is a schematic diagram of the guide assembly structure of the utility model. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-5 As shown, an asphalt mixture heating energy-saving device includes an asphalt heating box 1, a longitudinally movable heat transfer conduit 2 is horizontally arranged inside the asphalt heating box 1, a heat transfer medium inlet 21 and a heat transfer medium outlet 22 are respectively arranged at both ends of the heat transfer conduit 2, a retractable heat transfer medium introduction component 3 connected to the heat transfer medium inlet 21 and a retractable heat transfer medium outlet component 4 connected to the heat transfer medium outlet 22 are arranged on the upper end surface of the asphalt heating box 1, and longitudinal displacement components for moving the heat transfer conduit 2 longitudinally are also symmetrically arranged at the left and right ends of the asphalt heating box 1. By respectively arranging a retractable heat transfer medium introduction group and a retractable heat transfer medium outlet assembly at the two ends of the heat transfer conduit, the heat transfer oil heated by the heat transfer oil furnace can achieve heat exchange with the asphalt when passing through the inside of the heat transfer conduit, thereby achieving indirect heating of the asphalt. By arranging a longitudinal displacement component for longitudinally moving the heat transfer conduit on the asphalt heating box, the heat transfer conduit can be moved up and down when exchanging heat with the asphalt, thereby achieving heat exchange with the asphalt above the asphalt heating box, improving the uniformity of indirect heating of the asphalt, avoiding local heating of the bottom of the asphalt, reducing the time required for heating, reducing the working time of the heat transfer oil furnace, reducing energy waste, and having certain energy-saving performance

[0028] The heat transfer conduit 2 is arranged horizontally in a serpentine shape to increase the contact area between the heat transfer conduit and the asphalt, and the heat transfer conduit also has a certain function of stirring the asphalt.

[0029] The outer wall of the asphalt heating box 1 is provided with a heat insulation layer, which reduces the heat loss of asphalt during heating, further improves the heating efficiency, and reduces the loss of energy consumption.

[0030] The longitudinal displacement component includes a guide assembly 6, which includes a connecting plate 61 for connecting to the outer wall of the heat transfer pipe 2, and a first connecting seat 62 and a second connecting seat 63 are symmetrically arranged at the left and right ends of the connecting plate 61. A first guide rod 64 is vertically arranged on the first connecting seat 62, and a second guide rod 65 is vertically arranged on the second connecting seat 63. Guide cylinders 66 that are compatible with the first guide rod 64 and the second guide rod 65 are respectively arranged on the left and right sides of the upper end surface of the asphalt heating box 1. The first guide rod 64 and the second guide rod 65 can move longitudinally on the guide cylinder 66 respectively, thereby driving the first connecting seat 62, the second connecting seat 63, and the connecting plate 61 to move up and down, and then driving the heat transfer pipe 2 to move up and down.

[0031] There are a plurality of guide assemblies 6, which are evenly spaced along the front-rear direction of the heat transfer pipe 2 to further improve the stability of the connection plate 61 when connected to the heat transfer pipe 2, and the plurality of connection plates 61 also have a certain function of stirring asphalt.

[0032] The longitudinal displacement component also includes a lifting assembly, which includes a first lifting plate 71 and a second lifting plate 72. The lower end surface of the first lifting plate 71 is connected to the upper ends of a plurality of the first guide rods 64, and the lower end surface of the second lifting plate 72 is connected to the upper ends of a plurality of the second guide rods 65. The lifting assembly also includes a first lifting cylinder 75 and a second lifting cylinder 76. The first lifting cylinder 75 and the second lifting cylinder 76 are symmetrically arranged at the upper ends of the left and right sides of the asphalt heating box 1, and the first lifting cylinder 75 and the second lifting cylinder 76 are both arranged vertically upward. The piston rod end of the first lifting cylinder 75 is connected to the middle part of the first lifting plate 71 through the third connecting seat 73, and the piston rod end of the second lifting cylinder 76 is connected to the middle part of the second lifting plate 72 through the fourth connecting seat 74. The first lifting cylinder 75 and the second lifting cylinder 76 are lifted and lowered synchronously. The synchronous lifting of the first lifting cylinder 75 and the second lifting cylinder 76 can drive the first lifting plate 71 and the second lifting plate 72 to move upward or downward synchronously, thereby driving the first guide rods 64 and the second guide rods 65 to move longitudinally on the guide cylinder 66 respectively.

[0033] The retractable heat transfer medium introduction assembly 3 includes an outer sleeve 31 arranged vertically, the upper end of the outer sleeve 31 is connected to a heat transfer medium input pipe 8, the lower end of the outer sleeve 31 is connected to the upper end surface of the asphalt heating box 1, an inner sleeve 32 is coaxially arranged inside the outer sleeve 31, an annular piston 33 is coaxially arranged at the upper end of the inner sleeve 32, the outer side surface of the annular piston 33 is matched with the inner wall of the outer sleeve 31, and the lower end of the inner sleeve 32 is connected to the heat transfer medium inlet 21. When the heat transfer pipe 2 moves longitudinally, it can drive the annular piston at the upper end of the inner sleeve to slide along its axis inside the outer sleeve.

[0034] The retractable heat transfer medium outlet assembly 4 includes a second outer sleeve arranged vertically, the upper end of the second outer sleeve is connected to a heat transfer medium outlet pipe, the lower end of the second outer sleeve is connected to the upper end surface of the asphalt heating box 1, the second outer sleeve is coaxially arranged with a second inner sleeve, the upper end of the second inner sleeve is coaxially arranged with a second annular piston, the outer side surface of the second annular piston is matched with the inner wall of the second outer sleeve, and the lower end of the second inner sleeve is connected to the heat transfer medium outlet 22. When the heat transfer pipe 2 moves longitudinally, it can drive the second annular piston at the upper end of the second inner sleeve to slide along its axis inside the second outer sleeve.

[0035] The above is only a preferred implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An asphalt mixture heating energy-saving device, comprising an asphalt heating box (1), characterized in that: A heat transfer conduit (2) that can be moved longitudinally is horizontally arranged inside the asphalt heating box (1), and a heat transfer medium inlet (21) and a heat transfer medium outlet (22) are respectively arranged at the two ends of the heat transfer conduit (2). A retractable heat transfer medium introduction component (3) connected to the heat transfer medium inlet (21) and a retractable heat transfer medium outlet component (4) connected to the heat transfer medium outlet (22) are arranged on the upper end surface of the asphalt heating box (1). Longitudinal displacement components for longitudinally moving the heat transfer conduit (2) are also symmetrically arranged at the left and right ends of the asphalt heating box (1).

2. The asphalt mixture heating energy-saving device according to claim 1, characterized in that: The longitudinal displacement component comprises a guide assembly (6), the guide assembly (6) comprising a connecting plate (61) for connecting to the outer wall of the heat transfer pipe (2), a first connecting seat (62) and a second connecting seat (63) being symmetrically arranged at left and right ends of the connecting plate (61), a first guide rod (64) being arranged vertically upward on the first connecting seat (62), and a second guide rod (65) being arranged vertically upward on the second connecting seat (63), and guide cylinders (66) matching the first guide rod (64) and the second guide rod (65) are respectively arranged on left and right sides of the upper end surface of the asphalt heating box (1).

3. The asphalt mixture heating energy-saving device according to claim 2, characterized in that: A plurality of the guide assemblies (6) are provided, and the plurality of the guide assemblies (6) are evenly arranged at equal intervals along the front-rear direction of the heat transfer conduit (2).

4. The asphalt mixture heating energy-saving device according to claim 3 is characterized in that: The longitudinal displacement component further comprises a lifting assembly, the lifting assembly comprising a first lifting plate (71) and a second lifting plate (72), the lower end surface of the first lifting plate (71) being connected to the upper ends of a plurality of the first guide rods (64), and the lower end surface of the second lifting plate (72) being connected to the upper ends of a plurality of the second guide rods (65).

5. The asphalt mixture heating energy-saving device according to claim 4, characterized in that: The lifting assembly further comprises a first lifting cylinder (75) and a second lifting cylinder (76), wherein the first lifting cylinder (75) and the second lifting cylinder (76) are symmetrically arranged at upper ends of left and right sides of the asphalt heating box (1), and the first lifting cylinder (75) and the second lifting cylinder (76) are both arranged vertically upwards, the piston rod end of the first lifting cylinder (75) is connected to the middle part of the first lifting plate (71) via a third connecting seat (73), and the piston rod end of the second lifting cylinder (76) is connected to the middle part of the second lifting plate (72) via a fourth connecting seat (74).

6. The asphalt mixture heating energy-saving device according to claim 1, characterized in that: The retractable heat transfer medium introduction component (3) comprises an outer sleeve (31) arranged vertically, the upper end of the outer sleeve (31) is connected to a heat transfer medium input pipe (8), the lower end of the outer sleeve (31) is connected to the upper end surface of the asphalt heating box (1), an inner sleeve (32) is coaxially arranged inside the outer sleeve (31), an annular piston (33) is coaxially arranged at the upper end of the inner sleeve (32), the outer side surface of the annular piston (33) is matched with the inner wall of the outer sleeve (31), and the lower end of the inner sleeve (32) is connected to the heat transfer medium inlet (21).

7. The asphalt mixture heating energy-saving device according to claim 1, characterized in that: The retractable heat transfer medium outlet assembly (4) comprises a second outer sleeve arranged vertically, the upper end of the second outer sleeve is connected to a heat transfer medium outlet pipe, the lower end of the second outer sleeve is connected to the upper end surface of the asphalt heating box (1), a second inner sleeve is coaxially arranged inside the second outer sleeve, a second annular piston is coaxially arranged at the upper end of the second inner sleeve, the outer side surface of the second annular piston is matched with the inner wall of the second outer sleeve, and the lower end of the second inner sleeve is connected to the heat transfer medium outlet (22).

Images