Recycled powder treatment device of reverse-flow type plant mixing hot regeneration equipment

Abstract

The utility model relates to a recycled powder treatment device of reverse-flow type hot mix plant regeneration equipment. Comprising a regeneration drying roller, a feeding box arranged at the feeding end of the regeneration drying roller, a discharging box arranged at the discharging end of the regeneration drying roller, a hot material temporary storage bin connected with the lower end of a storage box, a settling box arranged at the lower end of the feeding box and a recycled powder conveying mechanism connected between the settling box and the hot material temporary storage bin. The settling box is arranged at the lower end of the feeding box so as to recycle dust generated in the conveying process of reclaimed materials, and the recycled powder conveying mechanism is matched to convey recycled powder deposited in the settling box due to gravity into the hot material temporary storage bin to be recycled, so that resource waste is reduced, the recycled powder can be prevented from depositing, caking and caking at the bottom of the feeding box, and the recycling efficiency is improved. And normal use of the equipment is further influenced.

Description

Technical Field

[0001] The utility model belongs to factory-mixed hot regeneration equipment, in particular to a recovered powder material processing device of countercurrent factory-mixed hot regeneration equipment. Background Art

[0002] With the rapid development of asphalt pavement construction in my country and the reconstruction and renovation of a large number of high-grade roads, the recycling and reuse of asphalt concrete recycled materials have been highly valued and widely concerned. In order to be able to add a higher proportion of old asphalt materials, a new generation of countercurrent asphalt concrete plant mix hot regeneration equipment came into being. Countercurrent asphalt concrete plant mix hot regeneration equipment uses convection flue gas in the opposite direction of the material flow to heat the asphalt concrete recycled materials, and controls the flue gas temperature for heat exchange, thereby achieving gentle heating of the asphalt concrete recycled materials and preventing the asphalt concrete recycled materials from aging during the heating process. As a new type of plant mix hot regeneration equipment, the countercurrent asphalt concrete plant mix hot regeneration equipment has a fast heating speed and is not easy to age. It realizes the addition of a large proportion of asphalt concrete recycled materials and accelerates and increases the recycling of asphalt concrete recycled materials.

[0003] During the heating process of the countercurrent asphalt concrete plant hot regeneration equipment, due to the negative pressure of the induced draft fan, a large amount of dust particles are inevitably generated at the feed end seat of the drying drum. The dust particles have high asphalt content, high water content and high material viscosity. These large amounts of fine particles are concentrated and settled at the bottom of the feed end seat of the regeneration drying drum. If these fine particles are not handled in time, they will agglomerate and accumulate, thus affecting the normal use of the equipment. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a recovered powder material processing device for countercurrent type factory-mixed hot regeneration equipment.

[0005] The utility model adopts the following technical solutions:

[0006] A recovered powder processing device of a countercurrent factory-mixed hot regeneration equipment comprises a regeneration drying drum, a feed box arranged at the feed end of the regeneration drying drum, a discharge box arranged at the discharge end of the regeneration drying drum, a hot material temporary storage bin connected to the lower end of the storage box, a sedimentation box arranged at the lower end of the feed box and a recovered powder conveying mechanism connected between the sedimentation box and the hot material temporary storage bin.

[0007] Furthermore, the recycled powder conveying mechanism includes a first screw conveyor arranged at the bottom of the sedimentation box and at least one second screw conveyor sequentially connected and arranged between the first screw conveyor and the hot material temporary storage bin.

[0008] Furthermore, the recycled powder conveying mechanism also includes a gravity valve arranged between the discharge end of the first screw conveyor and the feed end of the adjacent second screw conveyor.

[0009] Furthermore, the second screw conveyor is obliquely arranged between the first screw conveyor and the hot material temporary storage bin.

[0010] Furthermore, the second screw conveyor is arranged to be inclined upward along the direction of conveying the recovered powder.

[0011] Furthermore, it also includes a recycled material elevator, and the discharge end of the recycled material elevator is connected to the feed end of the feed box.

[0012] Furthermore, it also includes a stirring cylinder connected to the bottom of the hot material temporary storage bin.

[0013] It can be seen from the above description of the utility model that, compared with the prior art, the utility model has the following beneficial effects: the present application arranges a sedimentation box at the lower end of the feed box to recover the dust generated during the conveying process of the recycled material, and cooperates with the recovered powder conveying mechanism to convey the recovered powder deposited in the sedimentation box due to gravity to the hot material temporary storage bin for recycling, thereby reducing the waste of resources and preventing the recovered powder from depositing and agglomerating at the bottom of the feed box, thereby affecting the normal use of the equipment;

[0014] By limiting the structure of the recovered powder conveying mechanism, the first screw conveyor and the second screw conveyor cooperate to quickly convey the recovered powder that has settled at the bottom of the sedimentation box due to gravity to the hot material temporary storage bin for reuse, and the setting of the gravity valve can effectively reduce the negative pressure loss caused by conveying fine-particle recovered powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] In the figure, 1-frame, 2-regeneration drying drum, 3-feed box, 4-discharge box, 5-hot material temporary storage bin, 6-sedimentation box, 7-recovery powder conveying mechanism, 8-regeneration material elevator, 9-mixing cylinder, 71-first screw conveyor, 72-second screw conveyor, 73-gravity valve. DETAILED DESCRIPTION

[0017] The present invention is further described below through specific implementation methods.

[0018] Reference Figure 1 As shown, a recovered powder material processing device of a countercurrent factory-mixed hot regeneration equipment includes a frame 1, a regeneration drying drum 2, a feed box 3, a discharge box 4, a hot material temporary storage bin 5, a sedimentation box 6, a recovered powder conveying mechanism 7, a recycled material elevator 8 and a mixing cylinder 9.

[0019] The regeneration drying drum 2 is obliquely arranged on the frame 1 to dry the incoming regenerated material. Specifically, the feed end thereof is higher than the discharge end.

[0020] The feed box 3 is arranged at the feed end of the regenerated drying drum 2 to guide the recycled material into the regenerated drying drum 2. Specifically, a feed chute connected to the feed end of the regenerated drying drum 2 is provided in the feed box 3; further, the feed end of the regenerated drying drum 2 is connected to the side wall of the feed box 3.

[0021] The discharge box 4 is arranged at the discharge end of the regeneration drying drum 2 to guide the dried regenerated material into the hot material temporary storage bin 5 for storage.

[0022] The sedimentation box 6 is arranged at the lower end of the feed box 3 and is used to deposit the dust generated during the transportation of the recycled material.

[0023] The recovered powder conveying mechanism 7 is connected between the sedimentation box 6 and the hot material temporary storage bin 5 to convey the recovered powder accumulated in the sedimentation box 6 into the hot material temporary storage bin 5 for reuse, and comprises a first screw conveying mechanism 71 arranged at the bottom of the sedimentation box 6, at least one second screw conveyor 72 connected in sequence between the first screw conveyor 71 and the hot material temporary storage bin 5, and a gravity valve 73 arranged between the discharge end of the first screw conveyor 71 and the feed end of the adjacent second screw conveyor 72. By limiting the structure of the recovered powder conveying mechanism 7, the first screw conveyor 71 and the second screw conveyor 72 cooperate to convey the recovered powder settled at the bottom of the sedimentation box 6 due to gravity to the hot material temporary storage bin 5 for reuse, and the setting of the gravity valve 73 can effectively reduce the negative pressure loss caused by conveying fine-particle recovered powder; specifically, the second screw conveyor 72 is arranged between the first screw conveyor 71 and the hot material temporary storage bin 5 and tilted upward along the recovered powder conveying direction.

[0024] The recycled material elevator 8 is arranged on one side of the frame 1 , and its discharge end is connected to the feed end of the feed box 3 to transport the recycled material on the ground to the feed box 3 .

[0025] The stirring tank 9 is arranged on the frame 1 and connected to the bottom of the hot material temporary storage bin 5 to stir and mix the incoming hot recycled materials and other additives.

[0026] The present application sets a sedimentation box 6 at the lower end of the feed box 3 to recover the dust generated during the transportation of the recycled material, and cooperates with the recovered powder conveying mechanism 7 to convey the recovered powder deposited in the sedimentation box 6 due to gravity to the hot material temporary storage bin 5 for recycling, thereby reducing the waste of resources and preventing the recovered powder from depositing and agglomerating at the bottom of the feed box 3, thereby affecting the normal use of the equipment.

[0027] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the scope of application of the present invention and the contents of the specification should still fall within the scope covered by the present invention.

Claims

1. A recovered powder processing device for countercurrent plant-mixed hot regeneration equipment, characterized in that: It includes a regenerated drying drum, a feed box arranged at the feed end of the regenerated drying drum, a discharge box arranged at the discharge end of the regenerated drying drum, a hot material temporary storage bin connected to the lower end of the storage box, a sedimentation box arranged at the lower end of the feed box and a recovered powder conveying mechanism connected between the sedimentation box and the hot material temporary storage bin.

2. The recovered powder processing device of the countercurrent hot regeneration equipment according to claim 1 is characterized in that: The recycled powder conveying mechanism comprises a first screw conveyor arranged at the bottom of the sedimentation box and at least one second screw conveyor sequentially connected and arranged between the first screw conveyor and the hot material temporary storage bin.

3. The recovered powder processing device of the countercurrent plant-mixed hot regeneration equipment according to claim 2 is characterized in that: The recycled powder conveying mechanism further includes a gravity valve arranged between a discharge end of the first screw conveyor and a feed end of an adjacent second screw conveyor.

4. The recovered powder processing device of the countercurrent hot regeneration equipment according to claim 2 is characterized in that: The second screw conveyor is arranged obliquely between the first screw conveyor and the hot material temporary storage bin.

5. The recovered powder processing device of the countercurrent hot regeneration equipment according to claim 4 is characterized in that: The second screw conveyor is arranged to be inclined upward along the conveying direction of the recycled powder.

6. The recovered powder processing device of the countercurrent hot regeneration equipment according to claim 1 is characterized in that: It also includes a recycled material elevator, and the discharge end of the recycled material elevator is connected to the feed end of the feed box.

7. The recovered powder material processing device of the countercurrent plant-mixed hot regeneration equipment according to claim 1 is characterized in that: It also includes a stirring cylinder connected to the bottom of the hot material temporary storage bin.

Images