Pre-stirring device for hot mix plant recycling of asphalt mixture

Abstract

The utility model relates to the technical field of asphalt mixing processing, in particular to an asphalt mixture plant mixing hot recycling pre-stirring device which comprises a pre-stirring tank, a stirring mechanism, a stirring motor, an electric heating block and a display screen, a stirring mechanism is arranged in the pre-stirring tank to realize pre-stirring of a mixture, and meanwhile, an electric heating block is additionally arranged to heat the pre-stirring tank, so that the stirring quality is improved; by arranging the sampling mechanism on the pre-stirring tank, the mixture at the corresponding position can be sampled, so that whether the mixing degree meets the requirement or not is judged, and high-quality pre-stirring is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt mixing processing, in particular to an asphalt mixture plant mixing hot regeneration pre-mixing device. Background Art

[0002] Asphalt mixture plants often need to recycle asphalt and some construction waste products. This method can save resources. During the recycling process of such products, it is often necessary to use an asphalt mixture plant hot regeneration pre-mixing device to achieve mixing and preheating of the products. However, there are still some defects in the actual operation of the asphalt mixture plant hot regeneration pre-mixing device.

[0003] For example, the Chinese utility model patent with application number 201821768925.0 provides an asphalt mixture plant-mixed hot regeneration pre-mixing device and plant-mixed hot regeneration equipment, which achieves quantitative mixing and reduces costs through a mixing device inside the bin.

[0004] The existing method of material stirring can only achieve material mixing, but the temperature during stirring cannot be adjusted, nor can real-time judgment be made on whether the materials are sufficiently mixed. Therefore, insufficient material mixing may lead to low quality of the finished product, which cannot meet actual stirring requirements. Utility Model Content

[0005] The utility model aims to provide a pre-mixing device for hot regeneration in an asphalt mixture plant, so as to solve the technical problem of low mixing quality of the mixing device for hot regeneration in the current asphalt mixture plant.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An asphalt mixture plant hot regeneration pre-mixing device, comprising a pre-mixing tank, a mixing mechanism, a mixing motor, an electric heating block and a display screen;

[0008] The stirring motor is arranged outside the pre-stirring tank, the top end of the stirring mechanism is connected to the stirring motor, the bottom end of the stirring mechanism extends to the inside of the pre-stirring tank, and the electric heating block is arranged at the bottom end of the stirring mechanism;

[0009] At least two sampling mechanisms are arranged on the pre-mixing tank.

[0010] It is further defined that the top of the pre-mixing tank is provided with an assembly base cylinder and a top cover, the top cover is connected to the pre-mixing tank through the assembly base cylinder, and a loading reserved opening is opened on the top cover;

[0011] The stirring motor is arranged on the top cover, and the output end of the stirring motor extends through the top cover to the bottom of the top cover, the top end of the stirring mechanism is connected to the output end of the stirring motor, and the bottom end of the stirring mechanism extends through the assembly base cylinder to the interior of the pre-stirring tank, and the loading reserved port is located on the outside of the stirring motor; the sampling mechanism is arranged on the pre-stirring tank and / or the assembly base cylinder.

[0012] It is further defined that a temperature sensor is also provided on the top cover, and a measuring end of the temperature sensor is located below the top cover.

[0013] It is further defined that a display screen and a heating switch are provided on the outer side of the pre-mixing tank, the display screen is communicatively connected to the temperature sensor, and the heating switch is electrically connected to the electric heating block.

[0014] It is further defined that a material discharge reserved pipe is provided at the bottom of the pre-mixing tank, and the electric heating block is located above the material discharge reserved pipe.

[0015] It is further defined that the outer side of the pre-mixing tank is provided with a supporting frame, and the inner wall of the pre-mixing tank is provided with a Teflon non-stick layer.

[0016] It is further defined that the sampling mechanism includes a sampling port, a control valve, a threaded assembly tube, and a negative pressure sampling tube;

[0017] The sampling port is opened on the pre-mixing tank and / or the assembly base cylinder, the control valve is arranged on the sampling port, and the negative pressure sampling tube is detachably connected to the control valve through a threaded assembly tube.

[0018] It is further defined that the number of the sampling mechanisms is three, and the three sampling mechanisms are arranged at intervals from top to bottom.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The utility model realizes pre-mixing of the mixture by arranging a stirring mechanism in the pre-mixing tank, and at the same time adds an electric heating block to heat the pre-mixing tank to improve the mixing quality; by arranging a sampling mechanism on the pre-mixing tank, the mixture at the corresponding position can be sampled to judge whether the mixing degree meets the requirements, thereby realizing high-quality pre-mixing.

[0021] 2. The pre-mixing tank of the utility model is connected to the top cover by assembling the base tube, which is convenient for disassembly and assembly of the top cover and for maintenance; a Teflon non-stick layer is provided on the inner wall of the pre-mixing tank to avoid material adhesion leading to imbalance in material ratio and reduction in mixing quality; a temperature sensor, a display screen and a heating switch are provided to facilitate obtaining the internal temperature of the pre-mixing tank through the display screen, thereby adjusting the internal temperature by turning on or off the electric heating block to meet actual use requirements.

[0022] 3. The sampling mechanism of the utility model is convenient for sampling by setting a control valve and a negative pressure sampling tube, and the operation is simple. At the same time, the negative pressure sampling tube is disassembled and connected to the control valve through a threaded assembly tube, which is convenient for replacing the negative pressure sampling tube and reduces maintenance and repair costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the rear view structure of the pre-mixing tank of the utility model;

[0025] Figure 3 This is a schematic diagram of the front view structure of the top cover of the utility model;

[0026] Figure 4 This is a schematic diagram of a partial cross-sectional structure of a pre-mixing tank of the utility model when viewed from above;

[0027] Figure 5 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0028] In the figure: 1. Carrying frame; 2. Pre-mixing tank; 3. Top cover; 4. Display screen; 5. Reserved tube for unloading; 6. Assembly base cylinder; 7. Upper sampling assembly; 8. Middle sampling assembly; 9. Lower sampling assembly; 10. Stirring motor; 11. Reserved port for loading; 12. Temperature sensor; 13. Stirring mechanism; 14. Electric heating block; 15. Sealing plug; 16. Teflon non-stick layer; 17. Control valve; 18. Threaded assembly tube; 19. Negative pressure sampling tube; 20. Exhaust pipe fittings; 21. Pipe clamp. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-5 The utility model provides an asphalt mixture plant-mixed hot regeneration pre-mixing device, comprising a pre-mixing tank 2, a stirring mechanism 13, a stirring motor 10, an electric heating block 14 and a display screen 4, wherein the stirring mechanism 13 is installed inside the pre-mixing tank 2, the stirring motor 10 is installed outside the pre-mixing tank 2 and is transmission-connected with the stirring mechanism 13, and is used to drive the stirring mechanism 13 to stir the asphalt mixture in the pre-mixing tank 2; the electric heating block 14 is installed at the bottom of the stirring mechanism 13, and is used to heat the mixture in the pre-mixing tank 2 to improve the mixing quality.

[0031] It is further explained that a sampling mechanism is also provided on the pre-mixing tank 2. The number of the sampling mechanisms is at least two and the sampling mechanisms are arranged at intervals, so that the mixture at different positions in the pre-mixing tank 2 can be sampled to determine whether the mixture meets the requirements. After sufficient mixing, the mixture can be discharged to ensure the quality of the mixture.

[0032] Specifically, the top of the pre-mixing tank 2 is provided with an assembly base cylinder 6 and a top cover 3 detachably connected to the assembly base cylinder 6. The top cover 3 is connected to the top of the assembly base cylinder 6 by bolts, so that the pre-mixing tank 2 can be easily inspected and maintained after the top cover 3 is disassembled.

[0033] The feeding reserved opening 11 of the pre-mixing tank 2 is opened on the top cover 3, and the feeding reserved opening 11 is used for feeding materials. After the feeding is completed at the feeding reserved opening 11, a sealing plug 15 is arranged at the feeding reserved opening 11 to prevent external impurities from mixing in.

[0034] The stirring motor 10 is installed on the top of the top cover 3, and the feeding reserved port 11 is set on the outside of the stirring motor 10. The output end of the stirring motor 10 passes through the top cover 3 and is connected to the top of the stirring mechanism 13. The bottom end of the stirring mechanism 13 passes through the assembly base tube 6 and extends downward to above the bottom of the pre-mixing tank 2.

[0035] When in use, starting the stirring motor 10 on the top cover 3 can drive the stirring mechanism 13 to rotate in the asphalt mixture inside the pre-mixing tank 2, which can achieve mechanical stirring treatment of the material.

[0036] When unloading the pre-mixing tank 2, the unloading reserved pipe 5 is opened at the bottom of the pre-mixing tank 2. In order to avoid the electric heating block 14 blocking the unloading reserved pipe 5 and affecting the unloading speed, the unloading reserved pipe 5 is selected to be opened at a position below the electric heating block 14.

[0037] At the same time, in order to obtain the internal temperature of the pre-mixing tank 2 in real time and facilitate the control of the heating time of the electric heating block 14, a temperature sensor 12 is selected to be set on the top cover 3, and a display screen 4 and a heating switch are set on the outside of the pre-mixing tank 2. The measuring end of the temperature sensor 12 is located below the top cover 3 and is used to measure the internal temperature of the pre-mixing tank 2. The temperature sensor 12 is communicatively connected with the display screen 4 and is used to display the temperature through the display screen 4. The heating switch is electrically connected to the electric heating block 14 and is used to turn off the electric heating block 14 through the heating switch when the temperature is high, and turn on the electric heating block 14 through the heating switch when the temperature is too low, so as to adjust the internal temperature.

[0038] In order to ensure that the pre-mixing tank 2 is stable and reliable during operation, a support frame 1 is sleeved on the outside of the pre-mixing tank 2, the bottom of the support frame 1 is connected to the ground by bolts, and a rubber buffer layer is provided on the outside of the support frame 1.

[0039] In order to prevent the material from adhering to the inner wall of the pre-mixing tank 2 , which would cause the material ratio to be out of balance and reduce the mixing quality, a Teflon non-stick layer 16 is provided on the inner wall of the pre-mixing tank 2 .

[0040] To further illustrate, the number of sampling mechanisms is described by taking three as an example; the three sampling mechanisms are an upper sampling assembly 7, a middle sampling assembly 8 and a lower sampling assembly 9, the upper sampling assembly 7 is arranged on the assembly base tube 6, the middle sampling assembly 8 is arranged in the middle position of the pre-mixing tank 2, the lower sampling assembly 9 is arranged at the bottom of the pre-mixing tank 2, and the lower sampling assembly 9 is located above the discharge reserved tube 5.

[0041] The sampling mechanism includes a sampling port, a control valve 17, a threaded assembly tube 18 and a negative pressure sampling tube 19. The sampling port is opened on the pre-mixing tank 2 and / or the assembly base tube 6. The control valve 17 is installed on the sampling port to control the switch of the sampling; the negative pressure sampling tube 19 is detachably connected to the control valve 17 through the threaded assembly tube 18, so that the negative pressure sampling tube 19 can be easily replaced after it is worn out.

[0042] In order to facilitate sampling, an air extraction pipe 20 and a pipe clamp 21 are provided on the negative pressure sampling tube 19 . The air extraction pipe 20 is used to extract the air inside the negative pressure sampling tube 19 so that negative pressure exists in the negative pressure sampling tube 19 .

[0043] By sequentially arranging the upper sampling assembly 7, the middle sampling assembly 8 and the lower sampling assembly 9 from top to bottom, sampling and detection of material products at three height positions of upper, middle and lower inside the pre-mixing tank 2 can be achieved, thereby facilitating comprehensive determination of the processing effect of the asphalt mixture.

[0044] Specifically, the user can open the corresponding control valves 17 on the upper sampling assembly 7 , the middle sampling assembly 8 and the lower sampling assembly 9 , so that the materials at the corresponding positions are sucked into the negative pressure sampling tube 19 .

[0045] Among them, the user cleans the negative pressure sampling tube 19 and utilizes the threaded connection between the negative pressure sampling tube 19 and the threaded assembly tube 18 to realize the disassembly and assembly between the negative pressure sampling tube 19 and the control valve 17; after the installation is completed, the control valve 17 is closed to seal the other end of the negative pressure sampling tube 19, and then the pipe clamp 21 on the exhaust pipe fitting 20 is opened, and the internal gas of the negative pressure sampling tube 19 is extracted by connecting the exhaust pump to the exhaust pipe fitting 20 to form negative pressure, thereby reducing the sampling cost and difficulty and facilitating promotion.

[0046] Working process:

[0047] By using the support frame 1 with fixing screw holes installed outside the pre-mixing tank 2, the device can be fixed and installed by screws to improve stability; then the sealing plug 15 inside the feeding reserved opening 11 is pulled out to carry out the feeding process.

[0048] During the specific operation, on the one hand, the stirring motor 10 on the top cover 3 is started to drive the stirring mechanism 13 to rotate in the asphalt mixture inside the pre-mixing tank 2.

[0049] At the same time, the electric heating block 14 on the stirring mechanism 13 is started, and the temperature sensor 12 and the heating switch are cooperated to control the temperature and heat the material inside the pre-stirring tank 2, and the display screen 4 is used to display the temperature, thereby realizing the preheating processing of the product and enhancing the practicality.

[0050] By sequentially installing the upper sampling assembly 7, the middle sampling assembly 8 and the lower sampling assembly 9 from top to bottom, sampling and testing of material products at three internal height positions of upper, middle and lower can be achieved, thereby facilitating comprehensive determination of the mixing effect of the asphalt mixture.

[0051] When sampling, the user can open the corresponding control valve 17 on the upper sampling component 7, the middle sampling component 8 and / or the lower sampling component 9, so that the material at the corresponding position is sucked into the negative pressure sampling tube 19. In addition, the user can later clean the negative pressure sampling tube 19 and then use the threaded connection between the negative pressure sampling tube 19 and the threaded assembly tube 18 to achieve convenient disassembly and assembly between the negative pressure sampling tube 19 and the control valve 17; after the sampling is completed, close the control valve 17 and then open the pipe clamp 21 on the exhaust pipe 20, and use the exhaust pump to extract the gas inside the negative pressure sampling tube 19 to bring it into negative pressure so as to absorb the material. This allows the negative pressure sampling tube 19 to be recycled and reused, achieves the advantages of energy saving and environmental protection, and is easy to promote.

[0052] After the stirring is completed, the unloading reserved pipe 5 arranged at the bottom of the pre-stirring tank 2 can be opened to carry out the unloading operation.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-mixing device for hot regeneration of asphalt mixture in a plant, characterized in that: It comprises a pre-stirring tank (2), a stirring mechanism (13), a stirring motor (10) and an electric heating block (14); The stirring motor (10) is arranged outside the pre-stirring tank (2), the top end of the stirring mechanism (13) is connected to the stirring motor (10), the bottom end of the stirring mechanism (13) extends to the inside of the pre-stirring tank (2), and the electric heating block (14) is arranged at the bottom end of the stirring mechanism (13); At least two sampling mechanisms are arranged on the pre-mixing tank (2).

2. The asphalt mixture plant hot regeneration pre-mixing device according to claim 1, characterized in that: The top of the pre-mixing tank (2) is provided with an assembly base cylinder (6) and a top cover (3), the top cover (3) is connected to the pre-mixing tank (2) through the assembly base cylinder (6), and a loading reserved opening (11) is opened on the top cover (3); The stirring motor (10) is arranged on the top cover (3), the output end of the stirring motor (10) passes through the top cover (3) and extends to the bottom of the top cover (3), the top end of the stirring mechanism (13) is connected to the output end of the stirring motor (10), the bottom end of the stirring mechanism (13) passes through the assembly base cylinder (6) and extends to the inside of the pre-stirring tank (2), and the loading reserved port (11) is located on the outside of the stirring motor (10); the sampling mechanism is arranged on the pre-stirring tank (2) and / or the assembly base cylinder (6).

3. The asphalt mixture plant hot regeneration pre-mixing device according to claim 2, characterized in that: A temperature sensor (12) is also provided on the top cover (3), and a measuring end of the temperature sensor (12) is located below the top cover (3).

4. The asphalt mixture plant hot regeneration pre-mixing device according to claim 3, characterized in that: A display screen (4) and a heating switch are provided on the outside of the pre-mixing tank (2); the display screen (4) is communicatively connected to a temperature sensor (12); and the heating switch is electrically connected to an electric heating block (14).

5. The asphalt mixture plant hot regeneration pre-mixing device according to claim 4, characterized in that: A material discharge reserved pipe (5) is provided at the bottom of the pre-mixing tank (2), and the electric heating block (14) is located above the material discharge reserved pipe (5).

6. The asphalt mixture plant hot regeneration pre-mixing device according to claim 3, characterized in that: The outer side of the pre-mixing tank (2) is provided with a supporting frame (1), and the inner wall of the pre-mixing tank (2) is provided with a Teflon non-stick layer (16).

7. The asphalt mixture plant hot regeneration pre-mixing device according to claim 2, characterized in that: The sampling mechanism comprises a sampling port, a control valve (17), a threaded assembly tube (18) and a negative pressure sampling tube (19); The sampling port is opened on the pre-mixing tank (2) and / or the assembly base cylinder (6), the control valve (17) is arranged at the sampling port, and the negative pressure sampling tube (19) is detachably connected to the control valve (17) through a threaded assembly tube (18).

8. The asphalt mixture plant hot regeneration pre-mixing device according to claim 7, characterized in that: The number of the sampling mechanisms is three, and the three sampling mechanisms are arranged at intervals from top to bottom.

Images