An asphalt concrete feeding device

Abstract

The utility model discloses a kind of asphalt concrete feeding devices, belong to asphalt concrete preparation equipment technical field, it includes suction core and sleeve, the sleeve, suction core are hollow structure, sleeve inside is connected with suction core bearing, suction core is provided with guide vane and turbine blade group on it, sleeve outside is fixedly connected with helical blade, helical blade is used to stir asphalt deposit in asphalt tank, suction core is divided into three sections, from top to bottom respectively as connecting section, middle section and suction section, connecting section diameter is less than middle section diameter, connecting section is connected with conveying pipe by method lan, conveying pipe other end is connected with suction pump, middle section is connected with sleeve inside bearing, so that sleeve can rotate around middle section axis, suction section is circular truncated cone type, circular truncated cone type's large mouth end is fixedly connected with middle section, the device solves the problem that existing asphalt tank suction device exists utilization rate is low and deposit impurity is easy to block.

Description

Technical Field

[0001] This utility model belongs to the technical field of asphalt concrete preparation equipment, specifically relating to a feeding device for asphalt concrete. Background Technology

[0002] In the production of asphalt concrete, this is a special equipment used to continuously, uniformly, and controllably supply various raw materials to the mixing host.

[0003] However, in existing finished asphalt conveying and feeding devices, traditional suction heads have significant technical defects. When left to stand for a long time, slight segregation may occur, with light components floating and heavy components sinking. There is a lack of effective bottom active circulation or stirring devices. Heavy components, impurities and trace amounts of moisture brought in during transportation in the asphalt are prone to settling and caking at the bottom, which can easily lead to blockage of the oil outlet and filter. Therefore, this phenomenon has become a problem that urgently needs to be solved by those in the field. Utility Model Content

[0004] The purpose of this invention is to provide a feeding device for asphalt concrete, which aims to solve the problems of low utilization rate and easy clogging by sedimented impurities in existing asphalt tank suction devices.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a feeding device for asphalt concrete, including a suction core and a sleeve. Both the sleeve and the suction core are hollow structures. The inside of the sleeve is connected to the bearing of the suction core. The suction core is provided with guide vanes and a turbine blade assembly. A spiral blade is fixedly connected to the outside of the sleeve. The spiral blade is used to stir the asphalt sediment in the asphalt tank.

[0006] The present invention further explains that the suction core is divided into three sections, from top to bottom: a connecting section, a middle section, and a suction section. The diameter of the connecting section is smaller than that of the middle section. A conveying pipe is connected to the flange above the connecting section, and a suction pump is connected to the other end of the conveying pipe. The middle section is connected to the bearing inside the sleeve, so that the sleeve can rotate around the axis of the middle section.

[0007] This utility model further explains that the suction section is shaped like a frustum, with the large end of the frustum fixedly connected to the middle section, and the small end of the frustum used to suck up asphalt. The small end of the frustum is fixedly connected to the guide vanes, and the guide vanes are arranged in a circle around the axis of the suction section. Each guide vane has a gradually changing arc structure, and the axis of the connection between the guide vane and the suction section intersects with the axis of the suction section. The size of the guide vane is adapted to the inner diameter of the sleeve.

[0008] The present invention further explains that the turbine blade assembly is located inside the middle section, and two support rods are fixedly connected inside the middle section. A fixed shaft is fixedly connected between the two support rods. The fixed shaft is coaxial with the middle section, and the turbine blade assembly is sleeved on the outside of the fixed shaft.

[0009] The present invention further explains that the turbine blade assembly includes a sleeve and reinforcing blades. The reinforcing blades are arranged in a ring around the outside of the sleeve. The sleeve is connected to the fixed shaft bearing. The reinforcing blades are arc-shaped. The size of the reinforcing blades is adapted to the inner diameter of the middle section. The direction of the rotating flow field formed by the reinforcing blades is the same as the direction of the rotating flow field formed by the guide blades.

[0010] This utility model further explains that multiple support legs are fixedly connected to the lower part of the sleeve. When the sleeve is placed in the asphalt tank, the support legs play a supporting and isolating role, which facilitates the suction core to suck up the asphalt.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model, by setting guide vanes to trigger the self-driven rotation of the sleeve, and realizing the stirring of the spiral blades and scraping of the tank wall without external power, reduces the amount of asphalt residue and improves the utilization rate of raw materials; by setting a turbine blade group inside the suction core, the driving force of the sleeve rotation is improved, and at the same time, it can further break up large pieces of sediment, making the output more uniform. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a half-sectional schematic diagram of the suction core of this utility model; Figure 3 This is a bottom view of the suction core of this utility model; Figure 4 This is a schematic diagram of the turbine blade assembly of this utility model; In the diagram: 1. Suction core; 2. Sleeve; 3. Guide vane; 4. Turbine blade assembly; 5. Helical blade; 6. Connecting section; 7. Middle section; 8. Suction section; 9. Support rod; 10. Fixed shaft; 11. Sleeve; 12. Reinforcing blade; 13. Support leg. Detailed Implementation

[0013] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] Please see Figure 1-4The present invention provides a technical solution: a feeding device for asphalt concrete, comprising a suction core 1 and a sleeve 2. Both the sleeve 2 and the suction core 1 are hollow structures. The sleeve 2 is internally connected to the suction core 1 with a bearing. The suction core 1 is provided with a guide vane 3 and a turbine blade assembly 4. A spiral blade 5 is fixedly connected to the outside of the sleeve 2. The spiral blade 5 is used to stir the asphalt sediment in the asphalt tank.

[0015] The suction core 1 is divided into three sections, from top to bottom: connecting section 6, middle section 7, and suction section 8. The diameter of connecting section 6 is smaller than that of middle section 7. A conveying pipe (not shown in the figure) is connected to the flange above connecting section 6. A suction pump (not shown in the figure) is connected to the other end of the conveying pipe. Middle section 7 is connected to the bearing inside sleeve 2, so that sleeve 2 can rotate around the axis of middle section 7.

[0016] The suction section 8 is shaped like a frustum. The large end of the frustum is fixedly connected to the middle section 7, and the small end of the frustum is used to suck up asphalt. The small end of the frustum is fixedly connected to the guide vane 3. The guide vane 3 is arranged in a circle around the axis of the suction section 8. Each guide vane 3 has a gradually changing arc structure. The axis of the connection between the guide vane 3 and the suction section 8 intersects with the axis of the suction section 8. The size of the guide vane 3 is adapted to the inner diameter of the sleeve 2.

[0017] The turbine blade assembly 4 is located inside the middle section 7. Two support rods 9 are fixedly connected inside the middle section 7. A fixed shaft 10 is fixedly connected between the two support rods 9. The fixed shaft 10 is coaxial with the middle section 7. The turbine blade assembly 4 is sleeved on the outside of the fixed shaft 10.

[0018] The turbine blade assembly 4 includes a sleeve 11 and a reinforcing blade 12. The reinforcing blade 12 is arranged in a ring around the outside of the sleeve 11. The sleeve 11 is connected to the fixed shaft 10 bearing. The reinforcing blade 12 is arc-shaped. The size of the reinforcing blade 12 is adapted to the inner diameter of the middle section 7. The direction of the rotating flow field formed by the reinforcing blade 12 is the same as the direction of the rotating flow field formed by the guide blade 3.

[0019] Multiple support legs 13 are fixedly connected to the bottom of the sleeve 2. When the sleeve 2 is placed in the asphalt tank, the support legs 13 play a supporting and isolating role, which makes it easier for the suction core 1 to suck up the asphalt.

[0020] Working principle: The suction head is immersed in the asphalt medium in the asphalt tank. The support leg 13 below the sleeve 2 contacts the bottom of the tank, forming a support and isolation to prevent the initial suction of sediment from the bottom of the tank. The suction pump is started, and negative pressure is applied through the delivery pipe and the suction core 1. Under the action of negative pressure, the asphalt flows towards the suction port. When the asphalt passes through the suction section 8, it is guided by multiple guide vanes 3, forming a rotating flow field around the axis of the suction core 1. This rotating flow field impacts the inner wall of the sleeve 2, generating a continuous circumferential reaction force, driving the sleeve 2 to rotate slowly around the axis of the suction core 1. The spiral blades 5 can scrape off the material adhering to the tank wall and agitate the asphalt sediment at the bottom of the tank. This process resuspends the asphalt in the liquid, preventing sedimentation and clumping. Under negative pressure, some asphalt enters the suction core 1 from the suction section 8. The asphalt in the suction core 1 impacts the turbine blade assembly 4 on the fixed shaft 10. The rotating flow field formed by the turbine blade assembly 4 is completely aligned with the direction of the guide vanes 3, further enhancing the radial rotational force of the asphalt and increasing the reaction force of the impact sleeve 2. At the same time, it can break up large impurities initially sucked in. The sucked-in asphalt enters the conveying pipe through the connecting section 6 and is finally transported to the rear mixing system. Throughout the process, asphalt is extracted and transported stably and uniformly without residue.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A feeding device for asphalt concrete, comprising a suction core (1) and a sleeve (2), characterized in that: Both the sleeve (2) and the suction core (1) are hollow structures. The inside of the sleeve (2) is connected to the suction core (1) by a bearing. The suction core (1) is provided with a guide vane (3) and a turbine blade assembly (4). The outside of the sleeve (2) is fixedly connected with a spiral blade (5).

2. The feeding device for asphalt concrete according to claim 1, characterized in that: The suction core (1) is divided into three sections, from top to bottom: connecting section (6), middle section (7) and suction section (8). The diameter of the connecting section (6) is smaller than that of the middle section (7). A conveying pipe is connected to the flange above the connecting section (6), and a suction pump is connected to the other end of the conveying pipe. The middle section (7) is connected to the bearing inside the sleeve (2).

3. The feeding device for asphalt concrete according to claim 2, characterized in that: The suction section (8) is truncated cone-shaped. The large end of the truncated cone is fixedly connected to the middle section (7). The small end of the truncated cone is fixedly connected to the guide vane (3). The guide vane (3) is arranged in a circle around the axis of the suction section (8). Each guide vane (3) is a gradually changing arc structure. The axis of the connection between the guide vane (3) and the suction section (8) intersects with the axis of the suction section (8). The size of the guide vane (3) is adapted to the inner diameter of the sleeve (2).

4. The feeding device for asphalt concrete according to claim 3, characterized in that: The turbine blade assembly (4) is located inside the middle section (7). Two support rods (9) are fixedly connected inside the middle section (7). A fixed shaft (10) is fixedly connected between the two support rods (9). The fixed shaft (10) is coaxially arranged with the middle section (7). The turbine blade assembly (4) is sleeved on the outside of the fixed shaft (10).

5. The feeding device for asphalt concrete according to claim 4, characterized in that: The turbine blade assembly (4) includes a sleeve (11) and reinforcing blades (12). The reinforcing blades (12) are arranged in a ring around the outside of the sleeve (11). The sleeve (11) is connected to the fixed shaft (10) bearing. The reinforcing blades (12) are arc-shaped. The size of the reinforcing blades (12) is adapted to the inner diameter of the middle section (7). The direction of the rotating flow field formed by the reinforcing blades (12) is the same as that of the rotating flow field formed by the guide blades (3).

6. The feeding device for asphalt concrete according to claim 5, characterized in that: Multiple support legs (13) are fixedly connected to the lower part of the sleeve (2).

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