Double-asphalt feeding device for asphalt mixing plant

Abstract

The utility model discloses a double-asphalt feeding device for an asphalt mixing plant, which belongs to the technical field of asphalt mixing plant feeding and comprises a base, a box body, an input shaft, a discharge port and a control box, the box body is positioned at the upper end of the base, the input shaft is mounted at the upper part of the side wall of the box body, and the discharge port is positioned at the lower part of the side wall of the box body. The control box is fixed at the upper end of the box body, the stirring barrel is mounted in the box body, and the input shaft drives asphalt in the stirring barrel to stir through the driving equipment; a connecting shaft connected with the input shaft is arranged in the stirring barrel, and the side wall of the connecting shaft is connected with stirring blades through fasteners. A water bath tank is arranged at the bottom in the mixing plant and heats liquid in the water bath tank through a heater, an arc-shaped heat-conducting fin at the upper end of the water bath tank is in contact with a mixing drum to heat asphalt in the mixing drum, and liquid in the water bath tank heats a feeding pipeline and the asphalt in the mixing drum through a circulating pipeline and an arc-shaped hot water pipeline. The optimal application of heat is realized by fully utilizing the water bath box.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding materials in an asphalt mixing station, in particular to a double asphalt feeding device used in an asphalt mixing station. Background Art

[0002] Asphalt mixing plant, also known as asphalt concrete mixing plant, asphalt concrete mixing plant. Refers to a complete set of equipment used for batch production of asphalt concrete;

[0003] The utility model with Chinese patent publication number CN209636595U discloses a double asphalt feeding device for an asphalt mixing station, including a black asphalt feeding mechanism and a decolorized asphalt feeding mechanism, wherein the black asphalt feeding mechanism includes a black asphalt circulating pump arranged on the ground, the black asphalt circulating pump is connected to a black asphalt metering tank through an asphalt pipeline, and the black asphalt metering tank is connected to a black asphalt spraying pump; the decolorized asphalt feeding mechanism includes a decolorized asphalt circulating pump arranged on the ground, the decolorized asphalt circulating pump is connected to a decolorized asphalt metering tank through an asphalt pipeline, the decolorized asphalt metering tank is connected to a decolorized asphalt spraying pump, and the black The output ends of the asphalt spray pump and the decolorized asphalt spray pump are combined into one place and connected to the asphalt spray pipe, and the spray pipe is arranged in the mixing tank; a first gate valve is arranged between the black asphalt spray pump and the asphalt spray pipe, and a second gate valve is arranged between the decolorized asphalt spray pump and the asphalt spray pipe; a heat transfer oil pipeline is arranged outside the asphalt pipeline where the black asphalt spray pump and the decolorized asphalt spray pump are located, and the heat transfer oil pipeline is provided with a first pipeline valve outside the asphalt pipeline where the black asphalt spray pump is located, and a second pipeline valve is arranged outside the asphalt pipeline where the decolorized asphalt spray pump is located, and the two heat transfer oil pipelines are merged into the heat transfer oil return pipeline outside the asphalt spray pipe;

[0004] In the existing asphalt mixing plants, heating equipment is needed in the mixing drum to maintain the temperature of the asphalt inside, and the temperature at the feed pump needs to be maintained to prevent the asphalt from being too cold and affecting its use. The heating equipment currently used in the asphalt mixing plants needs to be operated independently to improve its efficiency. Utility Model Content

[0005] The main purpose of the utility model is to provide a double asphalt feeding device for an asphalt mixing station, which can effectively solve the problems raised in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A double asphalt feeding device for an asphalt mixing plant comprises a base, a box, an input shaft, a discharge port and a control box, wherein the box is located at the upper end of the base, the input shaft is installed at the upper part of the side wall of the box, the discharge port is located at the lower part of the side wall of the box, the control box is fixed at the upper end of the box, a mixing drum is installed in the box, and the input shaft drives the asphalt in the mixing drum to stir through a driving device;

[0008] The mixing drum is provided with a connecting shaft connected to the input shaft, and the side wall of the connecting shaft is connected with a mixing blade via a fastener. The inner cavity of the mixing drum is a mixing chamber, and the mixing blade stirs the asphalt in the mixing chamber. The two sides of the mixing drum are connected with a first feeding pump and a second feeding pump via a feeding pipeline.

[0009] A water bath is provided at the inner bottom of the box and at the lower end of the mixing drum, and a heater is installed on the side wall of the water bath. A circulation pipe is connected to the side wall of the water bath, and an arc-shaped hot water pipe close to the feed pipe is connected to the outer end of the circulation pipe. The arc-shaped hot water pipe and the feed pipe pass through the box to open windows.

[0010] In a further preferred embodiment of the present invention, the connecting shaft and the input shaft are fixed by bolts, and the connecting shaft and the mixing drum are mechanically sealed, and the input shaft is connected to the housing by a bearing;

[0011] In a further preferred embodiment of the present invention, the first feed pump and the second feed pump are symmetrically arranged on both sides of the box body, the first feed pump and the second feed pump are connected to the mixing drum through a feed pipe, and a heat conductive material is arranged on the surface of the feed pipe;

[0012] In a further preferred embodiment of the present invention, the stirring blade is obliquely mounted on the connecting shaft, a plurality of stirring blades are spirally distributed on the connecting shaft, and the bottom surface of the stirring drum is made of heat-conducting material;

[0013] In a further preferred embodiment of the present invention, the water bath is fixed to the base by bolts, and the upper end surface of the water bath is an arc surface, the heat conducting sheet is arranged on the water bath in an arc shape, and the heat conducting sheet is sealed and fixed to the water bath;

[0014] According to a further preferred embodiment of the present invention, the internal channel of the arc-shaped hot water pipe is designed in a "U" shape, the arc-shaped hot water pipe transfers heat to the feed pipe and heats the asphalt inside it, and the circulating pump in the water bath box circulates the hot water in the arc-shaped hot water pipe.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] In the utility model, a water bath is arranged at the bottom of the mixing station, and the water bath heats the internal liquid through a heater. The arc-shaped heat conducting plate at the upper end of the water bath contacts the mixing drum to heat the asphalt inside the mixing drum. The liquid in the water bath heats the feed pipe and the internal asphalt through a circulation pipe and an arc-shaped hot water pipe, and the water bath is fully utilized to achieve the best application of heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a diagram showing the stirring device, box body and discharge port of the utility model;

[0019] Figure 3 It is a schematic diagram of the stirring device, water bath and feed pump of the utility model;

[0020] Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle;

[0021] Figure 5 This is a display diagram of the water bath, feed pipe and arc-shaped hot water pipe of the utility model.

[0022] In the figure: 1. base; 2. box body; 3. window; 4. input shaft; 5. discharge port; 6. control box; 7. first feed pump; 8. second feed pump; 9. feed pipe; 10a. mixing drum; 10b. mixing chamber; 10c. mixing blades; 10d. connecting shaft; 10e. fastener; 11. water bath; 12. arc-shaped hot water pipe; 13. circulation pipe; 14. heater; 15. heat conducting sheet. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1 - Figure 5As shown, a double asphalt feeding device for an asphalt mixing plant includes a base 1, a box body 2, an input shaft 4, a discharge port 5 and a control box 6. The box body 2 is located at the upper end of the base 1, the input shaft 4 is installed on the upper part of the side wall of the box body 2, the discharge port 5 is located at the lower part of the side wall of the box body 2, and the control box 6 is fixed to the upper end of the box body 2. A mixing drum 10a is installed in the box body 2. The input shaft 4 drives the asphalt in the mixing drum 10a to stir through a driving device. The output shaft of the driving device is connected to the input shaft 4, and the driving device realizes the rotation of the input shaft 4; a first feeding pump 7 and a second feeding pump 8 are symmetrically arranged on both sides of the box body 2, and the first feeding pump 7 and the second feeding pump 8 are connected to the mixing drum 10a through a feeding pipe 9. A heat-conducting material is arranged on the surface of the feeding pipe 9. After the heat-conducting material is arranged on the bottom surface of the feeding pipe 9, the heat transfer efficiency of the feeding pipe 9 can be improved;

[0025] The stirring device includes a stirring drum 10a, stirring blades 10c, a connecting shaft 10d and fasteners. A connecting shaft 10d connected to the input shaft 4 is provided in the stirring drum 10a. The connecting shaft 10d and the input shaft 4 are fixed by bolts. The connecting shaft 10d and the stirring drum 10a are mechanically sealed. The input shaft 4 is connected to the housing 2 through a bearing. After the driving device is started, the input shaft 4 can be driven to rotate, thereby driving the rotation of the connecting shaft 10d; the side wall of the connecting shaft 10d is connected with a stirring blade 10c through a fastener 10e. The inner cavity of the stirring drum 10a is a stirring chamber 10b, and the stirring blade 10c stirs the asphalt in the stirring chamber 10b; the stirring blade 10c is obliquely installed on the connecting shaft 10d, and a plurality of stirring blades 10c are spirally distributed on the connecting shaft 10d. The lower bottom surface of the stirring drum 10a is a heat-conducting material; after the connecting shaft 10d rotates, the stirring blade 10c is driven to rotate, thereby realizing the rotation of the stirring blade 10c in the stirring chamber 10b, and realizing the stirring of the asphalt;

[0026] A water bath 11 is provided at the inner bottom of the box body 2 at the lower end of the mixing drum 10a, a heater 14 is installed on the side wall of the water bath 11, a circulation pipe 13 is connected to the side wall of the water bath 11, and an arc-shaped hot water pipe 12 close to the feed pipe 9 is connected to the outer end of the circulation pipe 13. The arc-shaped hot water pipe 12 and the feed pipe 9 pass through the box body 2 to form a window 3, and the arc-shaped hot water pipe 12 and the feed pipe 9 are fixed at the window 3 through the gap, and a rubber sleeve can also be used to achieve buffer protection at this place;

[0027] The water bath 11 is fixed to the base 1 by bolts, the upper end surface of the water bath 11 is an arc surface, and the heat conductive sheet 15 is arranged on the water bath 11 in an arc shape, and the heat conductive sheet 15 is sealed and fixed to the water bath 11; the internal channel of the arc-shaped hot water pipe 12 is designed in a "U" shape, and the arc-shaped hot water pipe 12 transfers heat to the feed pipe 9 and heats the asphalt inside it. The circulating pump in the water bath 11 circulates the hot water in the arc-shaped hot water pipe 12; since the heat conductive sheet 15 is arranged on the upper end of the water bath 11, the heat conductive sheet 15 transfers heat to the mixing drum 10a, thereby realizing the heating of the asphalt in the mixing drum 10a, and the arc-shaped hot water pipe 12 and the circulation pipe 13 are used to realize the heating of the asphalt in the feed pipe 9.

[0028] The utility model can arrange a water bath at the bottom of the mixing station, and the water bath heats the internal liquid through a heater. The arc-shaped heat conducting sheet at the upper end of the water bath contacts the mixing drum to heat the asphalt inside the mixing drum. The liquid in the water bath heats the feed pipe and the internal asphalt through the circulation pipe and the arc-shaped hot water pipe, and the water bath is fully utilized to achieve the best application of heat.

[0029] The above are the preferred embodiments of the utility model and the technical principles used therein. For those skilled in the art, without departing from the spirit and scope of the utility model, any obvious changes such as equivalent transformation, simple replacement, etc. based on the technical solution of the utility model shall fall within the protection scope of the utility model.

Claims

1. A dual asphalt feeding device for an asphalt mixing plant, comprising a base (1), a housing (2), an input shaft (4) and a discharge port (5), a heat conducting sheet (15) and a control box (6), wherein the housing (2) is located at the upper end of the base (1), the input shaft (4) is mounted on the upper part of the side wall of the housing (2), the discharge port (5) is located at the lower part of the side wall of the housing (2), and the control box (6) is fixed to the upper end of the housing (2), characterized in that: A mixing drum (10a) is installed in the box (2), and the input shaft (4) drives the asphalt in the mixing drum (10a) to stir through a driving device; The mixing drum (10a) is provided with a connecting shaft (10d) connected to the input shaft (4), and the side wall of the connecting shaft (10d) is connected to a mixing blade (10c) via a fastener (10e); the inner cavity of the mixing drum (10a) is a mixing chamber (10b), and the mixing blade (10c) stirs the asphalt in the mixing chamber (10b); and the two sides of the mixing drum (10a) are connected to a first feed pump (7) and a second feed pump (8) via a feed pipe (9); A water bath (11) is provided at the inner bottom of the box body (2) and at the lower end of the mixing drum (10a), and a heater (14) is installed on the side wall of the water bath (11). A circulation pipe (13) is connected to the side wall of the water bath (11), and an arc-shaped hot water pipe (12) closely attached to the feed pipe (9) is connected to the outer end of the circulation pipe (13). The arc-shaped hot water pipe (12) and the feed pipe (9) pass through the box body (2) to form a window (3).

2. A dual asphalt feeding device for an asphalt mixing plant according to claim 1, characterized in that: The connecting shaft (10d) and the input shaft (4) are fixed by bolts, and the connecting shaft (10d) and the mixing drum (10a) are mechanically sealed, and the input shaft (4) is connected to the housing (2) by a bearing.

3. A dual asphalt feeding device for an asphalt mixing plant according to claim 2, characterized in that: The first feed pump (7) and the second feed pump (8) are symmetrically arranged on both sides of the box body (2); the first feed pump (7) and the second feed pump (8) are connected to the mixing drum (10a) through a feed pipe (9); and a heat-conducting material is arranged on the surface of the feed pipe (9).

4. A dual asphalt feeding device for an asphalt mixing plant according to claim 3, characterized in that: The stirring blade (10c) is obliquely installed on the connecting shaft (10d), and a plurality of stirring blades (10c) are spirally distributed on the connecting shaft (10d). The bottom surface of the stirring barrel (10a) is made of heat-conducting material.

5. A dual asphalt feeding device for an asphalt mixing plant according to claim 4, characterized in that: The water bath (11) is fixed to the base (1) by bolts, and the upper end surface of the water bath (11) is an arc surface. The heat conducting sheet (15) is arranged on the water bath (11) in an arc shape, and the heat conducting sheet (15) is sealed and fixed to the water bath (11).

6. A dual asphalt feeding device for an asphalt mixing plant according to claim 5, characterized in that: The internal channel of the arc-shaped hot water pipe (12) is designed in a "U" shape. The arc-shaped hot water pipe (12) transfers heat to the feed pipe (9) and heats the asphalt inside the feed pipe (9). The circulating pump in the water bath box (11) causes the hot water in the arc-shaped hot water pipe (12) to circulate.

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