Machine head preheater of asphalt emulsification grinding machine

Abstract

The machine head preheater comprises a heating cavity and a mixing cavity, the upper portion of one side of the heating cavity is fixedly connected with an oil outlet pipe, one side of the oil outlet pipe is provided with a filtering structure, the upper portion of the interior of the heating cavity is provided with an oil outlet cabin, and a partition plate is fixedly connected to the inner side wall of the heating cavity. One side of the jacket is fixedly connected with an emulsified liquid feeding port, and an asphalt injection pipe penetrates through the interior of the top end of the jacket. By arranging the flowing heat conduction structure, heat conduction oil enters the oil inlet cabin from the oil inlet pipe, flows into the heat conduction cavity through the first flowing opening, heats the cavity body of the jacket and then flows out from the oil outlet pipe, and asphalt and emulsified liquid enter the jacket from the asphalt injection pipe and the emulsified liquid feeding opening respectively, so that the asphalt and the emulsified liquid are heated. The jacket is heated by high-temperature heat-conducting oil in the heat-conducting cavity, and the temperature of the cavity is increased, so that the temperature of a mixture of asphalt and emulsified liquid in the jacket is increased, the flowability is improved, and the asphalt is preheated.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt processing, in particular to a head preheater of an asphalt emulsifying grinder. Background Art

[0002] With the rapid development of the economy, the demand for asphalt in the transportation industry is increasing continuously. Although asphalt, as an amorphous substance, has no fixed melting point, it needs to be heated to a liquid state with high fluidity during the production process. Therefore, the heating device for heating asphalt during the production process is crucial.

[0003] For this reason, CN202021532973.7 discloses a preheating and stirring device for modified asphalt preparation. This solution provides a preheating device, which sequentially includes a wear-resistant layer, a buffer layer, a heat-insulating layer and an outer tank from the inside to the outside. There is a cavity between the buffer layer and the heat-insulating layer, and a heat-conducting pipe for accommodating hot oil is arranged in the cavity. The heating mechanism of this solution uses heat-conducting oil as a heat exchange medium. Heat-conducting oil is an excellent heat carrier, which not only has little environmental pollution, high heating efficiency, and safe and reliable operation. Relatively speaking, the commonly used open-fire heating heats asphalt unevenly, which affects the performance of the prepared modified asphalt when the fluidity of asphalt itself is poor. However, the heating device of this solution can only heat asphalt, but cannot heat the mixed solution after mixing asphalt with other substances, which will cause caking phenomenon after the heated asphalt is mixed with the mixture at a lower temperature, affecting the use of asphalt. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a head preheater of an asphalt emulsifying grinder to solve the defect that the existing open-fire heating of asphalt easily causes caking after mixing of mixtures.

[0005] To solve the above technical problems, the utility model provides the following technical solution: A head preheater of an asphalt emulsifying grinder, including a heating chamber and a mixing chamber. Above one side of the heating chamber, an oil outlet pipe is fixedly connected. A filtering structure is installed on one side of the oil outlet pipe. Above the inside of the heating chamber, an oil outlet chamber is arranged. Below one side of the heating chamber, an oil inlet pipe is fixedly connected. A reinforcing structure is arranged on the outer side of the oil inlet pipe. Below the inside of the heating chamber, an oil inlet chamber is arranged. On the other side of the heating chamber, a mixing chamber is fixedly connected. A flowing heat-conducting structure is fixedly connected to the inner side wall of the heating chamber. The flowing heat-conducting structure includes a partition plate, a support frame, a first flowing port and a second flowing port. The partition plate is fixedly connected to the inner side wall of the heating chamber. At the top end inside the mixing chamber, a jacket is fixedly connected. At the bottom end of the jacket, a discharge port is fixedly connected. A heat-conducting chamber is arranged inside the mixing chamber. On one side of the jacket, an emulsifying liquid inlet is fixedly connected. An asphalt injection pipe penetrates through the inside of the top end of the jacket.

[0006] During use, when the machine head preheater is installed on the asphalt emulsification grinder, the discharge port is communicated with the feed port of the asphalt emulsification grinder, asphalt enters the oil outlet pipe from the asphalt injection pipe, and the heat-conducting oil enters the oil inlet chamber from the oil inlet pipe and flows into the heat-conducting cavity through the first flow port to heat the cavity of the jacket.

[0007] Preferably, the filtering structure includes a butt joint pipe, an inlay groove, a filter pipe, filter paper and an oil outlet. The butt joint pipe is installed on one side of the oil outlet pipe. An inlay groove is formed inside one side of the butt joint pipe. The filter pipe is inlaid inside the inlay groove. The filter paper is wrapped around the outer side of the filter pipe. An oil outlet is arranged on the other side of the butt joint pipe. When the heat-conducting oil circulates, large-particle impurities will be filtered by the filter pipe, and small-particle impurities will be adsorbed on the inner wall of the filter paper.

[0008] Preferably, the inlay groove and the filter pipe are in an inlaid structure, and the cross-sectional area of the outer diameter of the oil outlet is smaller than the cross-sectional area of the inner diameter of the butt joint pipe, so as to adsorb and filter impurities.

[0009] Preferably, the reinforcement structure includes a hoop, a sealing ring and a butt joint piece. The hoop is sleeved on one side of the outer wall of the oil inlet pipe. The sealing ring is arranged inside the hoop. Butt joint pieces are fixedly connected to both ends of the hoop. The butt joint pieces are butted through fasteners such as bolts, so that the butt joint part can be kept stable, and a good sealing effect is maintained under the action of the sealing ring.

[0010] Preferably, the hoop and the butt joint piece are in an inlaid structure, and the hoops are symmetrically distributed on the outer side of the oil inlet pipe, so as to make the pipeline butt joint more stable.

[0011] Preferably, a support frame is fixedly connected to the middle position on one side of the heating cavity. A first flow port is formed below one side of the oil inlet chamber. A second flow port is formed on one side of the oil outlet chamber. The heat-conducting oil enters the oil inlet chamber from the oil inlet pipe and flows into the heat-conducting cavity through the first flow port to heat the cavity of the jacket, and then flows out from the oil outlet pipe.

[0012] Preferably, the support frame is perpendicular to the heating cavity, and the first flow port is communicated with the inside of the heat-conducting cavity to heat during the flow of the heat-conducting oil.

[0013] The head preheater of an asphalt emulsification grinder provided by the present utility model has the following advantages: By setting up a flowing heat conduction structure, the heat-conducting oil enters the oil inlet chamber from the oil inlet pipe and flows into the heat conduction cavity through the first flow port to heat the cavity of the jacket, and then flows out from the oil outlet pipe. The asphalt and the emulsion enter the inside of the jacket from the asphalt injection pipe and the emulsion feed port respectively. The jacket is heated by the high-temperature heat-conducting oil in the heat conduction cavity, the cavity temperature rises, and thus the temperature of the mixture of asphalt and emulsion in the jacket rises, and the fluidity increases, realizing the preheating of the asphalt;

[0014] By setting up a filtering structure, a butt joint pipe is installed on one side of the oil outlet pipe. When the heat-conducting oil circulates and flows, the large-particle impurities will be filtered by the filter pipe, and the small-particle impurities will be adsorbed on the inner wall of the filter paper, thereby filtering the heat-conducting oil and avoiding excessive impurities in the heat-conducting oil from affecting its heat conduction effect, realizing the filtering of the heat-conducting oil;

[0015] By setting up a reinforcement structure, in order to prevent loosening at the interface between the oil inlet pipe and the heat-conducting oil flow pipe during flow, a hoop is sleeved at the connection, and the butt joint piece is docked through fasteners such as bolts, so that the connection is kept stable, and under the action of the sealing ring, it has a good airtight effect, realizing the reinforcement of the pipeline connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view sectional structure diagram of the present utility model;

[0017] Figure 2 It is a top view sectional structure diagram of the present utility model;

[0018] Figure 3 It is a three-dimensional partial sectional structure diagram of the present utility model;

[0019] Figure 4 It is a front view sectional structure diagram of the filtering structure of the present utility model;

[0020] Figure 5 It is a side view sectional structure diagram of the filtering structure of the present utility model;

[0021] Figure 6 For the present utility model's Figure 1 Partial sectional enlarged structure diagram at position A;

[0022] Figure 7 It is a three-dimensional structure diagram of the reinforcement structure of the present utility model.

[0023] In the figure: 1. Heating chamber; 2. Oil outlet pipe; 3. Filter structure; 301. Docking pipe; 302. Mosaic groove; 303. Filter pipe; 304. Filter paper; 305. Oil outlet; 4. Oil outlet cabin; 5. Oil inlet pipe; 6. Reinforcement structure; 601. Hoop; 602. Sealing ring; 603. Docking piece; 7. Oil inlet cabin; 8. Mixing chamber; 9. Jacket; 10. Discharge port; 11. Heat conduction chamber; 12. Emulsion feed port; 13. Asphalt injection pipe; 14. Flow heat conduction structure; 1401. Partition board; 1402. Support frame; 1403. First flow port; 1404. Second flow port. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1 - 7 , a head preheater of an asphalt emulsification grinder provided by the present invention includes a heating chamber 1 and a mixing chamber 8. An oil outlet pipe 2 is fixedly connected above one side of the heating chamber 1. An oil outlet cabin 4 is arranged above the interior of the heating chamber 1. An oil inlet pipe 5 is fixedly connected below one side of the heating chamber 1. An oil inlet cabin 7 is arranged below the interior of the heating chamber 1. A mixing chamber 8 is fixedly connected to the other side of the heating chamber 1. A jacket 9 is fixedly connected to the top end inside the mixing chamber 8. A discharge port 10 is fixedly connected to the bottom end of the jacket 9. A heat conduction chamber 11 is arranged inside the mixing chamber 8. An emulsion feed port 12 is fixedly connected to one side of the jacket 9. An asphalt injection pipe 13 penetrates through the top end inside the jacket 9. A flow heat conduction structure 14 is fixedly connected to the inner side wall of the heating chamber 1. The flow heat conduction structure 14 includes a partition board 1401, a support frame 1402, a first flow port 1403 and a second flow port 1404. The partition board 1401 is fixedly connected to the inner side wall of the heating chamber 1. A support frame 1402 is fixedly connected to the middle position of one side of the heating chamber 1. A first flow port 1403 is opened below one side of the oil inlet cabin 7. A second flow port 1404 is opened on one side of the oil outlet cabin 4. The support frame 1402 is perpendicular to the heating chamber 1. The first flow port 1403 is communicated with the interior of the heat conduction chamber 11.

[0026] Refer to the attached Figure 1 and Figure 3, when the head preheater is installed on the asphalt emulsion grinder, the discharge port 10 is communicated with the feed port of the asphalt emulsion grinder. Asphalt enters the oil outlet pipe 2 from the asphalt injection pipe 13, and the heat-conducting oil enters the oil inlet chamber 7 from the inlet pipe 5 and flows into the heat-conducting cavity 11 through the first flow port 1403 to heat the cavity of the jacket 9, and then flows out from the oil outlet pipe 2. Asphalt and emulsion enter the inside of the jacket 9 from the asphalt injection pipe 13 and the emulsion feed port 12 respectively. The jacket 9 is heated by the high-temperature heat-conducting oil in the heat-conducting cavity 11, the temperature of the cavity rises, and then the temperature of the mixture of asphalt and emulsion in the jacket 9 rises, and the fluidity increases.

[0027] A filtering structure 3 is installed on one side of the oil outlet pipe 2. The filtering structure 3 includes a butt joint pipe 301, an embedding groove 302, a filter pipe 303, a filter paper 304 and an oil outlet 305. The butt joint pipe 301 is installed on one side of the oil outlet pipe 2. An embedding groove 302 is opened inside one side of the butt joint pipe 301. The filter pipe 303 is embedded inside the embedding groove 302. The filter paper 304 is wrapped around the outer side of the filter pipe 303. The other side of the butt joint pipe 301 is provided with the oil outlet 305. The embedding groove 302 and the filter pipe 303 are of an embedded structure, and the cross-sectional area of the outer diameter of the oil outlet 305 is smaller than the cross-sectional area of the inner diameter of the butt joint pipe 301.

[0028] Refer to the appendix Figure 1 , Figure 4 and Figure 5 , when the head preheater is in use, heating operation is carried out due to the flow of the heat-conducting oil. In this process, the heat-conducting oil often adopts a circulating flow mode for heating. After long-term use, impurities or oil residues are likely to appear in the heat-conducting oil. Therefore, the butt joint pipe 301 is installed on one side of the oil outlet pipe 2. When the heat-conducting oil circulates, the large-particle impurities will be filtered by the filter pipe 303, and the small-particle impurities will be adsorbed on the inner wall of the filter paper 304, so as to filter the heat-conducting oil and prevent too many impurities in the heat-conducting oil from affecting its heat-conducting effect.

[0029] A reinforcement structure 6 is arranged on the outer side of the inlet pipe 5. The reinforcement structure 6 includes a hoop 601, a sealing ring 602 and a butt joint piece 603. The hoop 601 is sleeved on one side of the outer wall of the inlet pipe 5. The sealing ring 602 is arranged on the inner side of the hoop 601. Butt joint pieces 603 are fixedly connected to both ends of the hoop 601. The hoop 601 and the butt joint piece 603 are of an embedded structure, and the hoop 601 is symmetrically distributed on the outer side of the inlet pipe 5.

[0030] Refer to the appendix Figure 1 , Figure 6 and Figure 7, when the head preheater is installed and used, since the temperature of the heat-conducting oil is relatively high when it enters the oil inlet chamber 7 and will continuously decrease when flowing and discharging, in order to prevent the connection between the inlet pipe 5 and the heat-conducting oil flow pipe from loosening during the flow, a hoop 601 is sleeved at the connection, and the butt joint piece 603 is butt-jointed through fasteners such as bolts, so that the butt joint can be kept stable, and under the action of the sealing ring 602, it can maintain a good airtight effect.

[0031] 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A head preheater for an asphalt emulsification grinder, comprising a heating chamber (1) and a mixing chamber (8); It is characterized in that: Above one side of the heating chamber (1), an oil outlet pipe (2) is fixedly connected. On one side of the oil outlet pipe (2), a filtering structure (3) is installed. Above the inside of the heating chamber (1), an oil outlet tank (4) is arranged. Below one side of the heating chamber (1), an oil inlet pipe (5) is fixedly connected. On the outer side of the oil inlet pipe (5), a reinforcement structure (6) is arranged. Below the inside of the heating chamber (1), an oil inlet tank (7) is arranged. On the other side of the heating chamber (1), a mixing chamber (8) is fixedly connected; On the inner side wall of the heating chamber (1), a flowing heat conduction structure (14) is fixedly connected. The flowing heat conduction structure (14) includes a partition plate (1401), a support frame (1402), a first flowing port (1403) and a second flowing port (1404). The partition plate (1401) is fixedly connected to the inner side wall of the heating chamber (1); At the top end inside the mixing chamber (8), a jacket (9) is fixedly connected. At the bottom end of the jacket (9), a discharge port (10) is fixedly connected. Inside the mixing chamber (8), a heat conduction chamber (11) is arranged. On one side of the jacket (9), an emulsifying liquid inlet (12) is fixedly connected. Inside the top end of the jacket (9), an asphalt injection pipe (13) penetrates through.

2. The head preheater of an asphalt emulsification grinder according to claim 1, characterized in that: The filtering structure (3) includes a butt joint pipe (301), an inlay groove (302), a filter pipe (303), filter paper (304) and an oil outlet (305). The butt joint pipe (301) is installed on one side of the oil outlet pipe (2). Inside one side of the butt joint pipe (301), an inlay groove (302) is opened. Inside the inlay groove (302), a filter pipe (303) is inlaid. The filter pipe (303) is wrapped with filter paper (304). On the other side of the butt joint pipe (301), an oil outlet (305) is arranged.

3. The head preheater of an asphalt emulsifying grinder according to claim 2, characterized in that: The inlay groove (302) and the filter pipe (303) are in an inlaid structure. The cross-sectional area of the outer diameter of the oil outlet (305) is smaller than the cross-sectional area of the inner diameter of the butt joint pipe (301).

4. The head preheater of an asphalt emulsification grinder according to claim 1, characterized in that: The reinforcement structure (6) includes a hoop (601), a sealing ring (602) and a butt joint piece (603). The hoop (601) is sleeved on one side of the outer side wall of the oil inlet pipe (5). Inside the hoop (601), a sealing ring (602) is arranged. At both ends of the hoop (601), butt joint pieces (603) are fixedly connected.

5. The head preheater of an asphalt emulsification grinder according to claim 4, characterized in that: The hoop (601) and the butt joint piece (603) are in an inlaid structure. The hoop (601) is symmetrically distributed on the outer side of the oil inlet pipe (5).

6. The head preheater of an asphalt emulsification grinder according to claim 1, characterized in that: At the middle position of one side of the heating chamber (1), a support frame (1402) is fixedly connected. Below one side of the oil inlet tank (7), a first flowing port (1403) is opened. On one side of the oil outlet tank (4), a second flowing port (1404) is opened.

7. The nose preheater of an asphalt emulsification grinder according to claim 6, characterized in that: The support frame (1402) is perpendicular to the heating chamber (1). The first flowing port (1403) is communicated with the inside of the heat conduction chamber (11).

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