Energy-saving coal water slurry stable conveying device

Abstract

The utility model discloses an energy-saving coal water slurry stable conveying device which comprises a buffer tank, a material conveying pipe, a first discharging pipe and a second discharging pipe are arranged on the circumferential outer wall of the buffer tank, a water receiving box is arranged at the bottom of the buffer tank, the interior of the water receiving box is of a hollow structure, a mounting block is arranged in the center of the inner wall of the bottom of the water receiving box, and the inner wall of the bottom of the water receiving box is of a hollow structure. A mounting groove is formed in the outer wall of the top of the mounting block, a motor is arranged on the inner wall of the mounting groove, and an output shaft of the motor is fixedly connected with a stirring rod and two rotating blades. The energy-saving stable conveying device for the coal water slurry has the advantages that energy consumption can be reduced, energy consumption and emission are reduced by optimizing the conveying process and equipment configuration, the purposes of energy conservation and emission reduction are achieved, and the conveying efficiency of the coal water slurry is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water coal slurry conveying devices, in particular to an energy-saving water coal slurry stable conveying device. Background Art

[0002] Water coal slurry is a low-pollution, high-efficiency, pipe-transportable kerosene-based fluid fuel obtained by physical processing of approximately 65% by mass of coal, 34% by mass of water, and 1% by mass of additives. It not only retains the original physical properties of coal but also has the fluidity and stability of oil, making it as easy to store, pipe-transport, and atomize and burn as oil. Water coal slurry has changed the traditional combustion mode of coal. Its combustion efficiency can reach over 95%, and the emissions of sulfur dioxide, nitrogen oxides, and soot concentration can all meet environmental protection requirements. Therefore, it has a wide range of applications and huge environmental protection and energy-saving advantages.

[0003] The patent document with the application number 202410260885.2 discloses a protection device for a water coal slurry conveying system, which is connected to a grinder through a first rigid pipe and to a finished product bin through a second rigid pipe. It has a good connection foundation and can reduce the impact of damage to the conveying system on the grinder and the finished product bin. Since the rigid pipe has good heat conduction performance, a primary cooling device is provided at the first rigid pipe, and a secondary cooling device is provided at the second rigid pipe to control the temperature of the water coal slurry entering the finished product bin.

[0004] However, in the prior art, the proportion modulation and transportation of water coal slurry are usually separated. On the one hand, because water coal slurry needs to be stored independently after being made, there is a situation of contact with the outside world during the process of pipeline transportation, which affects the ratio stability of water coal slurry. On the other hand, it also reduces the transportation efficiency of water coal slurry. Content of the Utility Model

[0005] The utility model discloses an energy-saving water coal slurry stable conveying device, aiming to solve the technical problem that in the prior art, the proportion modulation and transportation of water coal slurry are usually separated. On the one hand, because water coal slurry needs to be stored independently after being made, there is a situation of contact with the outside world during the process of pipeline transportation, which affects the ratio stability of water coal slurry. On the other hand, it also reduces the transportation efficiency of water coal slurry.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] Energy-saving water coal slurry stable conveying device, including a buffer tank. The circumferential outer wall of the buffer tank is provided with a feeding pipe, a first discharge pipe and a second discharge pipe. The bottom of the buffer tank is provided with a water receiving box. The inside of the water receiving box is a hollow structure. The central position of the bottom inner wall of the water receiving box is provided with a mounting block. The top outer wall of the mounting block is provided with a mounting groove. The inner wall of the mounting groove is provided with a motor. The output shaft of the motor is fixedly connected with a stirring rod and two rotating blades. The circumferential outer wall of the stirring rod is provided with six first stirring blades and three second stirring components. One end of the stirring rod is provided with a bearing block, and the bearing block is installed on the top inner wall of the buffer tank.

[0008] In this solution, during use, the feeding pipe transports the proportionally prepared water coal slurry into the water receiving box, and then the motor is started. The output shaft of the motor first drives the rotating blades to rotate, thereby initially stirring and mixing the water coal slurry. The modulated water coal slurry flows out through six discharge ports. Driven by the output shaft of the motor, the stirring rod and the first stirring blades and second stirring blades on the stirring rod rotate, thereby performing secondary full mixing and stirring on the water coal slurry above the water receiving box, preventing the water coal slurry from precipitating and stratifying, maintaining its uniformity and stability, reducing the pressure fluctuation during the conveying process, ensuring the continuous supply of the water coal slurry, integrating the modulation and conveying processes of the water coal slurry in a closed buffer tank, reducing the influence of the external environment on the stability of the water coal slurry ratio. Then, after a period of stable mixing and modulation, first close the discharge valve on the first discharge pipe. At this time, the water coal slurry is discharged through the second discharge pipe. When the second discharge pipe stops discharging, open the discharge valve, and a part of the water coal slurry located at the bottom of the buffer tank will be smoothly discharged through the first discharge pipe, avoiding waste of some water coal slurry resources. This device can reduce energy consumption by optimizing the conveying process and equipment configuration, reducing energy consumption and emissions, achieving the goal of energy conservation and emission reduction, and improving the conveying efficiency of the water coal slurry.

[0009] In a preferred solution, the first stirring blade is arc-shaped and inclined downward.

[0010] This setting can stir the water coal slurry near the bottom inside the buffer tank, facilitate the discharge of the first discharge pipe, and prevent the water coal slurry from precipitating and stratifying for a long time.

[0011] In a preferred solution, the stirring component includes four mounting rings. The top of the mounting ring is provided with four equally spaced second stirring blades. The mounting ring is fixedly connected to the circumferential outer wall of the stirring rod. The second stirring blade is a spiral structure.

[0012] In this solution, the spiral second stirring blade can make the water coal slurry perform both horizontal circular motion and vertical upward motion during the stirring process, thereby realizing full stirring of the water coal slurry.

[0013] As can be seen from the above, the energy-saving and stable water coal slurry conveying device includes a buffer tank. The circumferential outer wall of the buffer tank is provided with a feeding pipe, a first discharge pipe, and a second discharge pipe. The bottom of the buffer tank is provided with a water receiving box. The inside of the water receiving box is a hollow structure. The central position of the bottom inner wall of the water receiving box is provided with a mounting block. The top outer wall of the mounting block is provided with a mounting groove. The inner wall of the mounting groove is provided with a motor. The output shaft of the motor is fixedly connected with a stirring rod and two rotating blades. The circumferential outer wall of the stirring rod is provided with six first stirring blades and three second stirring components. One end of the stirring rod is provided with a bearing block, and the bearing block is installed on the top inner wall of the buffer tank. The energy-saving and stable water coal slurry conveying device provided by the present invention has the technical effect of being able to reduce energy consumption by optimizing the conveying process and equipment configuration, reducing energy consumption and emissions, achieving the goal of energy conservation and emission reduction, and improving the conveying efficiency of water coal slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. 1 is a schematic diagram of the overall structure of the energy-saving and stable water coal slurry conveying device proposed by the present invention.

[0015] Figure 2 FIG. 2 is a schematic diagram of the structure of the water receiving box of the energy-saving and stable water coal slurry conveying device proposed by the present invention.

[0016] Figure 3 FIG. 3 is a schematic diagram of the plane cross-section of the energy-saving and stable water coal slurry conveying device proposed by the present invention.

[0017] Figure 4 FIG. 4 is a schematic diagram of the structure of the second stirring blade of the energy-saving and stable water coal slurry conveying device proposed by the present invention.

[0018] Figure 5 FIG. 5 is a schematic diagram of the structure of the first stirring blade of the energy-saving and stable water coal slurry conveying device proposed by the present invention.

[0019] In the drawings: 1. Buffer tank; 2. Feeding pipe; 3. First discharge pipe; 4. Discharge valve; 5. Second discharge pipe; 6. Liquid extraction pump; 7. Water receiving box; 8. Discharge port; 9. Mounting block; 10. Stirring rod; 11. Bearing block; 12. First stirring blade; 13. Second stirring blade; 14. Motor; 15. Mounting ring. DETAILED DESCRIPTION OF THE INVENTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Components of the embodiments of the present application usually described and marked in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but only represents the selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0021] The energy-saving and stable water coal slurry conveying device disclosed by the utility model is mainly applied to the scenario where in the prior art, the proportion modulation and transportation of water coal slurry are usually separated. On the one hand, because the water coal slurry needs to be stored independently after being made, and there is a situation of contact with the outside world during the process of pipeline transportation, which affects the stability of the water coal slurry ratio. On the other hand, it also reduces the transportation efficiency of the water coal slurry.

[0022] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The energy-saving and stable water coal slurry conveying device includes a buffer tank 1. The circumferential outer wall of the buffer tank 1 is provided with a feeding pipe 2, a first discharge pipe 3 and a second discharge pipe 5. The bottom of the buffer tank 1 is provided with a water receiving box 7. The inside of the water receiving box 7 is a hollow structure. The central position of the bottom inner wall of the water receiving box 7 is provided with a mounting block 9. The top outer wall of the mounting block 9 is provided with a mounting groove. The inner wall of the mounting groove is provided with a motor 14. The output shaft of the motor 14 is fixedly connected with a stirring rod 10 and two rotating blades. The circumferential outer wall of the stirring rod 10 is provided with six first stirring blades 12 and three second stirring components. One end of the stirring rod 10 is provided with a bearing block 11, and the bearing block 11 is installed on the top inner wall of the buffer tank 1.

[0023] It should be noted that the buffer tank 1 for modulation and transportation is designed near the boiler room or gasification device to reduce the transportation distance and energy consumption. During the specific use process, pressure and flow sensors can be installed in the first discharge pipe 3 and the second discharge pipe 5 to monitor and adjust the transportation process in real time to ensure the stable transportation of the water coal slurry. And the first discharge pipe 3 and the second discharge pipe 5 need to select pipeline materials that are corrosion-resistant and wear-resistant, such as stainless steel or carbon steel pipes with special coatings, to adapt to the chemical properties of the water coal slurry and ensure the stability of the pipeline. At the same time, it is recommended to install a waterproof ring between the output shaft of the motor 14 and the top of the mounting block 9 to prevent the water coal slurry from entering the interior of the motor 14.

[0024] Among them, six discharge ports 8 are equidistantly distributed on the outer wall of the top of the water receiving box 7, and one end of the conveying pipe 2 communicates with the inside of the water receiving box 7. This setting facilitates the first modulation and mixing of the water coal slurry in the water receiving box 7 through the rotating blades. It should be noted that heat tracing belts can be designed on the inner wall of the water receiving box 7 and the outer pipes of the first discharge pipe 3 and the second discharge pipe 5. The heat generated by the current warms the water receiving box 7, keeping the water coal slurry at a relatively high temperature, reducing the possibility of pipeline blockage, ensuring the fluidity and normal transportation of the water coal slurry. In addition, the heat tracing belt can also prevent the pipeline from freezing and extend the service life of the pipeline.

[0025] During the specific use process, the first stirring blade 12 is arc-shaped and inclined downward, which can stir the water coal slurry near the bottom inside the buffer tank 1, facilitating the discharge of the first discharge pipe 3 and preventing the water coal slurry from settling and stratifying for a long time.

[0026] Among them, the stirring assembly includes four mounting rings 15. Four second stirring blades 13 are equidistantly distributed on the top of the mounting ring 15. The mounting ring 15 is fixedly connected to the circumferential outer wall of the stirring rod 10. The second stirring blade 13 is of a spiral structure. The spiral second stirring blade 13 can make the water coal slurry perform both horizontal circular motion and vertical upward motion during the stirring process, so as to realize the full stirring of the water coal slurry.

[0027] Specifically, during use, the conveying pipe 2 transports the proportionally prepared water coal slurry into the water receiving box 7, and then the motor 14 is started. The output shaft of the motor 14 first drives the rotating blade to rotate, thereby stirring and mixing the water coal slurry for the first time. The modulated water coal slurry flows out through the six discharge ports 8. Driven by the output shaft of the motor 14, the stirring rod 10 and the first stirring blade 12 and the second stirring blade 13 on the stirring rod 10 rotate, thereby performing secondary full mixing and stirring on the water coal slurry above the water receiving box 7, preventing the water coal slurry from settling and stratifying, maintaining its uniformity and stability, reducing the pressure fluctuation during the transportation process, ensuring the continuous supply of the water coal slurry, integrating the modulation and transportation process of the water coal slurry in the closed buffer tank 1, reducing the influence of the external environment on the stability of the water coal slurry ratio. Then, after a period of stable mixing and modulation, first close the discharge valve 4 on the first discharge pipe 3. At this time, the water coal slurry is discharged through the second discharge pipe 5. When the second discharge pipe 5 stops discharging, open the discharge valve 4, and a part of the water coal slurry located at the bottom of the buffer tank 1 will be smoothly discharged through the first discharge pipe 3, avoiding waste of some water coal slurry resources. This device can reduce energy consumption by optimizing the transportation process and equipment configuration, reducing energy consumption and emissions, achieving the goal of energy conservation and emission reduction, and improving the transportation efficiency of the water coal slurry.

[0028] Refer to Figure 1 and Figure 3, in a preferred embodiment, the first discharge pipe 3 and the second discharge pipe 5 are located on the same side, one end of the first discharge pipe 3 is located at the top of the water receiving box 7, and one end of the second discharge pipe 5 is close to the inner wall of the top of the buffer tank 1.

[0029] Wherein, a discharge valve 4 is provided at the end of the first discharge pipe 3 far from the inside of the buffer tank 1, which is mainly used to control the discharge of the water slurry.

[0030] Refer to Figure 1 and Figure 3 , in a preferred embodiment, a liquid extraction pump 6 is provided on the outer wall of the top of the buffer tank 1. The liquid inlet pipe of the liquid extraction pump 6 extends into the inside of the buffer tank 1, and the liquid discharge pipe of the liquid extraction pump 6 communicates with the second discharge pipe 5.

[0031] Specifically, the provided liquid extraction pump 6 facilitates the extraction of the water slurry in the buffer tank 1. And during use, at least one spare pump needs to be equipped for each boiler to ensure that the system can continue to operate when the liquid extraction pump 6 fails. At the same time, a speed regulating device can be equipped for the pump to select a high-efficiency and low-energy consumption pump, such as a positive displacement pump, according to different conveying requirements and load changes to reduce the operating cost.

[0032] Working principle: During use, the feeding pipe 2 transports the proportionally prepared water slurry into the water receiving box 7. Then start the motor 14. The output shaft of the motor 14 first drives the rotating blade to rotate, so as to first stir and mix the water slurry. The modulated water slurry flows out through the six discharge ports 8. Driven by the output shaft of the motor 14, the stirring rod 10 and the first stirring blade 12 and the second stirring blade 13 on the stirring rod 10 rotate, so as to perform secondary full mixing and stirring on the water slurry above the water receiving box 7, prevent the water slurry from precipitating and stratifying, maintain its uniformity and stability, reduce the pressure fluctuation during the conveying process, ensure the continuous supply of the water slurry, integrate the modulation and conveying process of the water slurry in the closed buffer tank 1, reduce the influence of the external environment on the stability of the water slurry ratio. Then after a period of stable mixing and modulation, first close the discharge valve 4 on the first discharge pipe 3. At this time, the water slurry is discharged through the second discharge pipe 5. When the second discharge pipe 5 stops discharging, open the discharge valve 4, and a part of the water slurry located at the bottom of the buffer tank 1 will be smoothly discharged through the first discharge pipe 3, avoiding waste of some water slurry resources.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The substitution may be the substitution of part of the structure, device, method steps, or a complete technical solution. Any equivalent substitution or change made according to the technical solution of the present invention and its inventive concept should be covered within the protection scope of the present invention.

Claims

1. An energy-saving water-coal slurry stable conveying device, comprising a buffer tank (1), characterized in that: The circumferential outer wall of the buffer tank (1) is provided with a feed pipe (2), a first discharge pipe (3) and a second discharge pipe (5); the bottom of the buffer tank (1) is provided with a water receiving box (7); the interior of the water receiving box (7) is a hollow structure; a mounting block (9) is provided at the central position of the bottom inner wall of the water receiving box (7); a mounting groove is provided on the top outer wall of the mounting block (9); a motor (14) is provided on the inner wall of the mounting groove; a stirring rod (10) and two rotating blades are fixedly connected to the output shaft of the motor (14); six first stirring blades (12) and three second stirring components are provided on the circumferential outer wall of the stirring rod (10); a bearing block (11) is provided at one end of the stirring rod (10); and the bearing block (11) is mounted on the top inner wall of the buffer tank (1).

2. The energy-saving water-coal slurry stable conveying device according to claim 1 is characterized in that: The top outer wall of the water receiving box (7) is provided with six discharge ports (8) distributed at equal distances, and one end of the feed conveying pipe (2) is in communication with the interior of the water receiving box (7).

3. The energy-saving water-coal slurry stable conveying device according to claim 2 is characterized in that: The first stirring blade (12) is arc-shaped and inclined downward.

4. The energy-saving water-coal slurry stable conveying device according to claim 1 is characterized in that: The stirring assembly comprises four mounting rings (15), the top of each mounting ring (15) being provided with four second stirring blades (13) distributed at equal distances, the mounting ring (15) being fixedly connected to the circumferential outer wall of the stirring rod (10), and the second stirring blades (13) being a spiral structure.

5. The energy-saving water-coal slurry stable conveying device according to claim 4 is characterized in that: The first discharge pipe (3) and the second discharge pipe (5) are located on the same side, and one end of the first discharge pipe (3) is located at the top of the water receiving box (7), while one end of the second discharge pipe (5) is close to the top inner wall of the buffer tank (1).

6. The energy-saving water-coal slurry stable conveying device according to claim 1 is characterized in that: A liquid pump (6) is provided on the top outer wall of the buffer tank (1); a liquid inlet pipe of the liquid pump (6) extends into the interior of the buffer tank (1); and a liquid discharge pipe of the liquid pump (6) is in communication with the second discharge pipe (5).

7. The energy-saving water-coal slurry stable conveying device according to claim 6 is characterized in that: A discharge valve (4) is provided at one end of the first discharge pipe (3) away from the interior of the buffer tank (1).

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