Asphalt macadam mixing device for asphalt pavement construction

Abstract

The utility model discloses an asphalt macadam mixing device for asphalt pavement construction, which relates to the technical field of asphalt pavement construction and comprises supporting legs and an outer cylinder, the outer cylinder is fixedly mounted on the supporting legs, a mixing component is arranged on the inner side of the outer cylinder, a water supply component is arranged on the outer side of the outer cylinder, and the mixing component comprises a water filtering component. The water filtering assembly comprises an inner cylinder, the inner cylinder is fixedly installed on the inner side of the outer cylinder, a stirring bin is installed at the bottom of the inner cylinder, a draining cavity is formed between the stirring bin and the inner cylinder, and a water drainage pipe is further fixedly installed at the bottom of the inner cylinder. According to the asphalt and macadam mixing device for asphalt pavement construction, the stirring cabin is driven by the lifting frame to move in the inner cylinder body, water in the stirring cabin falls into the draining cavity through the draining holes in the bottom of the stirring cabin and is drained from the drainage pipe, so that when redundant water is drained, asphalt raw materials are prevented from being mixed with the water, and the asphalt and macadam mixing effect is improved. And normal mixing of asphalt raw materials is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt pavement construction, in particular to an asphalt crushed stone mixing device for asphalt pavement construction. Background Art

[0002] Asphalt pavement construction refers to the construction process of using asphalt concrete as the road surface material in road construction. It is to lay asphalt concrete on the road base and process it through processes such as vibration and compaction to finally form a flat and durable road surface.

[0003] Usually, asphalt crushed stone is mixed to form concrete. The existing Chinese patent with authorization announcement number CN219315418U discloses an asphalt crushed stone mixing device for asphalt pavement construction. It includes a stirring mechanism and a V-shaped plate. The stirring mechanism drives the V-shaped plate to rotate, thereby increasing the contact area between the crushed stone and the concrete, thereby providing a stirring effect.

[0004] When preparing asphalt concrete, the existing device usually adds hot asphalt and asphalt raw materials such as crushed stone and fine stone into the mixing chamber, and fully mixes the raw materials by rotating the mixing drum and the mixing blades. In the process, a certain amount of water is added to adjust the viscosity of the asphalt. However, when the excess water is discharged, the water and the asphalt raw materials are mixed together, and the unmixed asphalt raw materials are easily released, thereby affecting the mixing of the asphalt raw materials. Utility Model Content

[0005] In view of the above-mentioned problem that in the prior art, when the excess water is discharged, the water and the asphalt raw material are mixed together, and the unmixed asphalt raw material is easily released, thereby affecting the mixing of the asphalt raw materials, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide an asphalt gravel mixing device for asphalt pavement construction, the purpose of which is to: drive the raw materials in the mixing chamber and the water in the drainage chamber to separate by a lifting frame, so as to avoid the probability of asphalt raw materials and water being mixed together during drainage.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: an asphalt crushed stone mixing device for asphalt pavement construction, comprising a support leg and an outer cylinder, the outer cylinder is fixedly mounted on the support leg, a mixing component is arranged on the inner side of the outer cylinder, and a water supply component is arranged on the outer side of the outer cylinder;

[0008] The mixing component includes a water filtering assembly, which includes an inner cylinder, the inner cylinder is fixedly mounted on the inner side of the outer cylinder, a mixing chamber is mounted on the bottom of the inner cylinder, a drainage chamber is arranged between the mixing chamber and the inner cylinder, a drain pipe is also fixedly mounted on the bottom of the inner cylinder, one end of the drain pipe is located on the inner side of the drainage chamber, a feeding trough for adding asphalt raw materials into the inner cylinder is arranged on the top of the outer cylinder, the outer ring diameter of the mixing chamber is the same as the inner ring diameter of the inner cylinder, and a drainage hole identical to that of the drainage chamber is provided at the bottom of the mixing chamber, and a valve for releasing water from the drainage chamber is arranged on the drain pipe.

[0009] As a preferred solution of the asphalt gravel mixing device for asphalt pavement construction described in the utility model, a lifting frame is fixedly installed on the top of the mixing chamber, and the mixing chamber is movably connected to the top of the drainage chamber through the lifting frame, one end of the lifting frame protrudes outward from the outer cylinder body, and when the lifting frame moves in the groove in the outer cylinder body, the distance between the mixing chamber and the drainage chamber changes.

[0010] As a preferred solution of the asphalt gravel mixing device for asphalt pavement construction described in the utility model, a vertical guide rail is fixedly installed on the outer side of the outer cylinder, a driving motor is fixedly installed on the bottom of the vertical guide rail, the output shaft of the driving motor is connected to the screw, the lifting frame is threadedly connected to the vertical guide rail through the screw, a groove is provided on the inner side of the vertical guide rail for facilitating the movement of the lifting frame, and the screw runs through the entire vertical guide rail, and when the driving motor rotates, the lifting frame moves along the groove in the vertical guide rail.

[0011] As a preferred solution of the asphalt gravel mixing device for asphalt pavement construction described in the utility model, wherein: the mixing component also includes a stirring assembly, the stirring assembly includes a rotating shaft, a positioning ring is fixedly installed on the outer side of the rotating shaft, and the rotating shaft passes through the top of the lifting frame, and the end of the rotating shaft protruding from the top of the outer cylinder is connected to the output shaft of the stirring motor, when the rotating shaft is driven by the output shaft in the stirring motor, it rotates on the inner side of the inner cylinder under the restriction of the lifting frame, and when the lifting frame moves, the moving distance of the lifting frame is limited by the positioning ring, thereby driving the rotating shaft to move synchronously.

[0012] As a preferred solution of the asphalt gravel mixing device for asphalt pavement construction described in the utility model, a stirring shaft is fixedly installed on the end of the rotating shaft away from the stirring motor, the stirring shafts are distributed in a circular array around the rotating shaft and are located on the inner side of the mixing chamber, and the rotating shaft can drive the stirring shaft to rotate in the mixing chamber, thereby stirring and mixing the asphalt raw materials in the mixing chamber.

[0013] As a preferred solution of the asphalt gravel mixing device for asphalt pavement construction described in the utility model, a scraper is fixedly installed on the end of the stirring shaft away from the rotating shaft, and filter rods are arranged and distributed between the scraper and the rotating shaft. When in use, the scraper is in contact with the inner wall of the mixing chamber, and the outer side of the filter rod is provided with a protrusion to increase the contact surface.

[0014] As a preferred solution of the asphalt gravel mixing device for asphalt pavement construction described in the utility model, the water supply component includes a water tank, a booster pump is fixedly installed on the water tank, a water supply pipe is connected to the bottom of the water tank, one end of the water supply pipe is located on the inner side of the drain chamber, and the booster pump can pump water out of the water tank and send it into the drain chamber through the water supply pipe.

[0015] As a preferred solution of the asphalt gravel mixing device for asphalt pavement construction described in the utility model, wherein: a water supply pipe is connected to the side of the water tank away from the water supply pipe, and the other end of the water supply pipe is connected to a spray rack, and the spray rack is installed on the inner side of the inner cylinder and located on the top of the mixing chamber. The water supply pipe can pressurize the water through a booster pump and then deliver it to the spray rack, and a nozzle for spraying toward the mixing chamber is installed at the bottom of the spray rack.

[0016] Beneficial effects of the utility model:

[0017] 1. The lifting frame drives the mixing chamber to move in the inner cylinder to separate the asphalt raw materials from the water in the mixing chamber. The water in the mixing chamber falls into the drain cavity through the drain holes at the bottom of the mixing chamber and is discharged from the drain pipe. When the excess water is discharged, the asphalt raw materials are prevented from mixing with water, thus ensuring the normal mixing of the asphalt raw materials.

[0018] 2. Use the scraper to scrape off the raw materials sticking to the rotating shaft, and use the filter rod to increase the contact surface between the filter rod and the raw materials, so that the raw materials can be stirred and mixed more evenly.

[0019] 3. After the water in the water tank is pressurized by a booster pump, it is sent to the spray rack through a water delivery pipe, and sprayed on the inner cylinder through the spray rack to replenish water inside the device in time, thereby ensuring the quality of asphalt preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 The utility model is a schematic diagram of the overall structure of an asphalt crushed stone mixing device for asphalt pavement construction.

[0022] Figure 2 The utility model is a schematic diagram of the cross-sectional structure of an asphalt crushed stone mixing device for asphalt pavement construction.

[0023] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of the mixing components of the asphalt gravel mixing device for asphalt pavement construction.

[0024] Figure 4 The utility model is an asphalt crushed stone mixing device for asphalt pavement construction Figure 3 A-section structure enlarged schematic diagram.

[0025] Figure 5 The utility model is a schematic diagram of the structure of the water supply component of the asphalt gravel mixing device for asphalt pavement construction.

[0026] Description of reference numerals:

[0027] 1. Support legs; 2. Outer cylinder; 3. Mixing components; 31. Water filter components; 311. Inner cylinder; 312. Mixing chamber; 313. Drain chamber; 314. Drain pipe; 315. Lifting frame; 316. Vertical guide rail; 317. Drive motor; 318. Screw; 32. Stirring component; 321. Rotating shaft; 322. Positioning ring; 323. Stirring motor; 324. Stirring shaft; 325. Scraper; 326. Filter rod; 4. Water supply components; 41. Water tank; 42. Booster pump; 43. Water supply pipe; 44. Water delivery pipe; 45. Spray rack. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] Example 1

[0030] Reference Figure 1-3 , which is the first embodiment of the utility model, provides an asphalt gravel mixing device for asphalt pavement construction, the asphalt gravel mixing device for asphalt pavement construction comprises a support leg 1 and an outer cylinder 2, the outer cylinder 2 is fixedly mounted on the support leg 1, a mixing component 3 is arranged on the inner side of the outer cylinder 2, a water supply component 4 is arranged on the outer side of the outer cylinder 2, the mixing component 3 comprises a water filtering assembly 31, the water filtering assembly 31 comprises an inner cylinder 311, the inner cylinder 311 is fixedly mounted on the inner side of the outer cylinder 2, a mixing chamber 312 is mounted at the bottom of the inner cylinder 311, a drainage chamber 313 is arranged between the mixing chamber 312 and the inner cylinder 311, a drainage pipe 314 is also fixedly mounted at the bottom of the inner cylinder 311, and one end of the drainage pipe 314 is located on the inner side of the drainage chamber 313.

[0031] A lifting frame 315 is fixedly installed on the top of the mixing chamber 312, and the mixing chamber 312 is movably connected to the top of the drainage chamber 313 through the lifting frame 315, and one end of the lifting frame 315 protrudes out of the outside of the outer cylinder 2.

[0032] A vertical guide rail 316 is fixedly installed on the outer side of the outer cylinder 2 , a driving motor 317 is fixedly installed on the bottom of the vertical guide rail 316 , an output shaft of the driving motor 317 is connected to a screw rod 318 , and the lifting frame 315 is threadedly connected to the vertical guide rail 316 via the screw rod 318 .

[0033] During use, asphalt raw materials are added to the inner cylinder 311 through the feed trough on the outer cylinder 2, and the raw materials fall into the mixing chamber 312 due to gravity and are collected uniformly. After the raw materials are added, water is added for mixing. During the mixing process, when too much water is added, the water in the drainage chamber 313 is released by opening the valve in the drain pipe 314, and by activating the drive motor 317, the output shaft in the drive motor 317 drives the screw 318 to rotate, so that the threaded lifting frame 315 moves along the groove in the vertical guide rail 316, and the mixing chamber 312 is driven to move in the inner cylinder 311 by the lifting frame 315, so as to separate the asphalt raw materials and water in the mixing chamber 312, and the water in the mixing chamber 312 falls into the drainage chamber 313 through the drainage hole at the bottom of the mixing chamber 312, and is discharged from the drain pipe 314, so as to avoid the asphalt raw materials and water from being mixed when the excess water is discharged, thereby ensuring the normal mixing of the asphalt raw materials.

[0034] Example 2

[0035] Reference Figure 1-5 , which is the second embodiment of the utility model, and this embodiment is different from the first embodiment in that:

[0036] The mixing component 3 also includes a stirring assembly 32, which includes a rotating shaft 321. A positioning ring 322 is fixedly installed on the outer side of the rotating shaft 321, and the rotating shaft 321 passes through the top of the lifting frame 315. The end of the rotating shaft 321 protruding from the top of the outer cylinder 2 is connected to the output shaft of the stirring motor 323.

[0037] A stirring shaft 324 is fixedly mounted on one end of the rotating shaft 321 away from the stirring motor 323 . The stirring shafts 324 are distributed in a ring array around the rotating shaft 321 and are located inside the stirring chamber 312 .

[0038] A scraper 325 is fixedly mounted on one end of the stirring shaft 324 away from the rotating shaft 321 , and a filter rod 326 is arranged between the scraper 325 and the rotating shaft 321 .

[0039] The water supply component 4 includes a water tank 41 , on which a booster pump 42 is fixedly mounted. A water supply pipe 43 is connected to the bottom of the water tank 41 , and one end of the water supply pipe 43 is located inside the drain chamber 313 .

[0040] A water supply pipe 44 is connected to one side of the water tank 41 away from the water supply pipe 43 , and a spray rack 45 is connected to the other end of the water supply pipe 44 . The spray rack 45 is installed on the inner side of the inner cylinder 311 and located on the top of the mixing chamber 312 .

[0041] During use, the output shaft in the stirring motor 323 drives the rotating shaft 321 to drive the stirring shaft 324 to stir the asphalt raw materials in the mixing chamber 312 under the restriction of the lifting frame 315, and because the positioning ring 322 is located above the lifting frame 315, the rotating shaft 321 can maintain synchronous movement with the mixing chamber 312, and the scraper 325 is used to scrape off the raw materials sticking on the rotating shaft 321, and the filter rod 326 is used to increase the contact surface between the raw materials, so that the raw materials are stirred and mixed more evenly, and when the amount of water in the inner cylinder 311 is insufficient, the water in the water tank 41 is sent into the drainage chamber 313 through the water supply pipe 43 by the booster pump 42, or the water in the water tank 41 is pressurized by the booster pump 42, and then sent to the spray rack 45 through the water supply pipe 44, and the inner cylinder 311 is sprayed by the spray rack 45, so as to replenish water in time inside the device, thereby ensuring the quality of asphalt preparation.

[0042] The remaining structures are the same as those of Example 1.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An asphalt crushed stone mixing device for asphalt pavement construction, comprising a support leg (1) and an outer cylinder (2), wherein the outer cylinder (2) is fixedly mounted on the support leg (1), characterized in that: A mixing component (3) is arranged on the inner side of the outer cylinder (2), and a water supply component (4) is arranged on the outer side of the outer cylinder (2); The mixing component (3) comprises a water filtering assembly (31), wherein the water filtering assembly (31) comprises an inner cylinder (311), wherein the inner cylinder (311) is fixedly mounted on the inner side of the outer cylinder (2), wherein a mixing chamber (312) is mounted at the bottom of the inner cylinder (311), wherein a drainage chamber (313) is arranged between the mixing chamber (312) and the inner cylinder (311), and wherein a drainage pipe (314) is fixedly mounted at the bottom of the inner cylinder (311), wherein one end of the drainage pipe (314) is located on the inner side of the drainage chamber (313).

2. The asphalt crushed stone mixing device for asphalt pavement construction according to claim 1, characterized in that: A lifting frame (315) is fixedly installed on the top of the mixing chamber (312), and the mixing chamber (312) is movably connected to the top of the drainage chamber (313) through the lifting frame (315), and one end of the lifting frame (315) protrudes from the outside of the outer cylinder (2).

3. The asphalt crushed stone mixing device for asphalt pavement construction according to claim 2, characterized in that: A vertical guide rail (316) is fixedly installed on the outer side of the outer cylinder (2), a driving motor (317) is fixedly installed on the bottom of the vertical guide rail (316), an output shaft of the driving motor (317) is connected to a screw rod (318), and the lifting frame (315) is threadedly connected to the vertical guide rail (316) via the screw rod (318).

4. The asphalt crushed stone mixing device for asphalt pavement construction according to claim 3, characterized in that: The mixing component (3) also includes a stirring assembly (32), and the stirring assembly (32) includes a rotating shaft (321). A positioning ring (322) is fixedly installed on the outer side of the rotating shaft (321), and the rotating shaft (321) passes through the top of the lifting frame (315). One end of the rotating shaft (321) protruding from the top of the outer cylinder (2) is connected to the output shaft of the stirring motor (323).

5. The asphalt crushed stone mixing device for asphalt pavement construction according to claim 4, characterized in that: A stirring shaft (324) is fixedly mounted on one end of the rotating shaft (321) away from the stirring motor (323); the stirring shafts (324) are distributed in a ring array around the rotating shaft (321) and are located on the inner side of the stirring chamber (312).

6. The asphalt crushed stone mixing device for asphalt pavement construction according to claim 5, characterized in that: A scraper (325) is fixedly mounted on one end of the stirring shaft (324) away from the rotating shaft (321), and filter rods (326) are arranged and distributed between the scraper (325) and the rotating shaft (321).

7. The asphalt crushed stone mixing device for asphalt pavement construction according to claim 1, characterized in that: The water supply component (4) comprises a water tank (41), a booster pump (42) is fixedly mounted on the water tank (41), a water supply pipe (43) is connected to the bottom of the water tank (41), and one end of the water supply pipe (43) is located inside the drainage chamber (313).

8. The asphalt crushed stone mixing device for asphalt pavement construction according to claim 7, characterized in that: A water supply pipe (44) is connected to one side of the water tank (41) away from the water supply pipe (43), and the other end of the water supply pipe (44) is connected to a spray rack (45). The spray rack (45) is installed on the inner side of the inner cylinder (311) and is located at the top of the mixing chamber (312).

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