A proportioning device for coal and alternative fuels

Abstract

The utility model relates to a batching device technical field, especially in kind for coal and alternative fuel batching device, include: batching box, the both ends of the top of batching box are equipped with first feed port and second feed port respectively, the first feed port is fixedly connected with the discharge gate through the feed pipe, the discharge gate is arranged at the bottom of the placement board, the top of placement board is installed with the rotary motor, the drive end of rotary motor is connected the bottom of rotary plate, the top of rotary plate is installed with a plurality of top opening's grinding cylinder, the lower extreme of grinding cylinder outer surface is equipped with filter hole, filter frame with filter screen is connected with the filter hole slidingly, the bottom of grinding cylinder is equipped with grinding outlet, through setting up different grinding cylinder, when needing to clean filter screen, can rotate the grinding cylinder that needs to clean filter screen to the side of discharge gate, and the filter screen is taken out and cleaned in the outside of discharge gate, and the whole process does not need to stop.

Description

Technical Field

[0001] This utility model relates to the field of batching device technology, and in particular to a batching device for coal and alternative fuels. Background Technology

[0002] While coal, as a traditional energy source, holds a place in the energy sector, the large amounts of carbon dioxide and other pollutants produced during its combustion have drawn widespread attention. Especially against the backdrop of environmental protection and sustainable energy development, finding clean energy alternatives to coal has become an urgent need. These alternative fuels can not only reduce environmental pollution but also effectively alleviate my country's dependence on fossil fuels, promoting a shift in the energy structure towards a greener and more sustainable direction.

[0003] Solid alternative fuels (SRFs) are fuels that provide thermal energy to various energy-consuming units, prepared primarily from non-hazardous combustible solid waste through processes such as pretreatment, impurity removal, crushing, screening, sorting, and molding. They are high-quality, environmentally friendly, and renewable resources. The raw materials used to prepare SRFs include general industrial solid waste, bulky waste, and landscaping waste, among other combustible solid wastes.

[0004] Existing solid alternative fuels require mixing with pulverized coal for batching. Before batching, the solid alternative fuels need to be ground in a grinder, and then mixed with pulverized coal. The mixture is then transported to the burner through a fuel pipeline. The burner then transports the solid alternative fuel and pulverized coal mixture to the boiler. Since the mixture contains air, it can burn after being transported to the boiler. The heat released by the combustion is absorbed by the heating surfaces at each stage inside the furnace, thus providing heat.

[0005] However, when grinding solid alternative fuels, the mill's filter screen separates the fuel powder. Fine particles can be used directly, while coarse particles accumulate on the filter screen and need to be collected periodically and re-ground in the hammer mill. Collecting coarse particles requires not only stopping the mill, but also the filter material may clog the screen and overflow before shutdown, thus affecting the grinding efficiency of solid alternative fuels and subsequent batching operations.

[0006] Therefore, it is necessary to provide a batching device for coal and alternative fuels to solve the above-mentioned technical problems. Utility Model Content

[0007] To solve the above-mentioned technical problems, this utility model provides a batching device for coal and alternative fuels.

[0008] This utility model provides a batching device for coal and alternative fuels, comprising: a batching box, with a first inlet and a second inlet respectively at both ends of the top of the batching box; the first inlet is fixedly connected to an outlet via an inlet pipe; the outlet is located at the bottom of a placement plate; the bottom of the placement plate is connected to the top of the batching box via a bracket; a rotary motor is mounted on the top of the placement plate; the drive end of the rotary motor is connected to the bottom of the rotary plate; multiple grinding cylinders with top openings are mounted on the top of the rotary plate; multiple grinding rollers are installed inside the grinding cylinders; and the grinding rollers are connected to the grinding cylinders via a transmission mechanism. A grinding motor is connected to the outer surface of the grinding cylinder. A filter hole is provided at the lower end of the outer surface of the grinding cylinder. The filter hole is slidably connected to a filter frame with a filter screen. A grinding outlet is provided at the bottom of the grinding cylinder. The grinding outlet is connected to a grinding discharge pipe through a grinding solenoid valve. The bottom of the grinding discharge pipe passes through a rotating plate and is located above the placement plate. A stirring shaft is installed inside the mixing box. The top of the stirring shaft is connected to the drive end of a stirring motor. The stirring motor is installed at the top of the mixing box. A feeding port is provided at the bottom of the mixing box. The feeding port is connected to a feeding pipe through a feeding solenoid valve. The feeding pipe is connected to a burner through a pipe.

[0009] Preferably, a limiting ring is provided at the top of the discharge port, the inner diameter of the limiting ring is larger than the outer diameter of the grinding discharge pipe, and the bottom of the grinding discharge pipe is located above the limiting ring.

[0010] Preferably, the mixing box includes an upper box and a lower box. The upper box is rectangular in shape, and the lower box is frustum in shape. The top of the lower box is larger than the bottom of the lower box, and the feeding port is located at the bottom of the lower box.

[0011] Preferably, the filter frame has a tension ring on its side, and the tension ring is U-shaped.

[0012] Preferably, the grinding cylinder has a feeding cylinder with openings at the top and bottom installed inside. The feeding cylinder is truncated cone-shaped, with the top of the feeding cylinder being larger than the bottom. The top of the feeding cylinder abuts against the filter frame, and the bottom of the feeding cylinder communicates with the grinding outlet.

[0013] Preferably, the bottom of the rotating plate is provided with a protective ring, the protective ring is rotatably connected to a protective groove, and the protective groove is provided on the top of the placement plate.

[0014] Preferably, the outer surface of the grinding cylinder is fitted inside the limiting ring, the limiting ring is located on the top of the limiting plate, and the bottom of the limiting plate is connected to the top of the rotating plate through a fixed shaft.

[0015] Compared with related technologies, the batching device for coal and alternative fuels provided by this utility model has the following beneficial effects: 1. This utility model uses a rotary motor to drive different grinding cylinders to align with the discharge port. By setting different grinding cylinders, when it is necessary to clean the filter screen, the grinding cylinder that needs to be cleaned can be rotated to one side of the discharge port, and the filter screen can be taken out and cleaned from the outside of the discharge port. The whole process does not require stopping the machine, which improves the cleaning efficiency and the efficiency of subsequent batching operations. 2. By setting a frustum-shaped lower box, the mixed fuel can be easily fed into the feed port by the guidance of the inner surface of the lower box and the effect of gravity, thereby improving the feeding efficiency of the feed port. 3. By setting a frustum-shaped feeding cylinder, the grinding of alternative fuel can be facilitated by the guidance of the inner surface of the feeding cylinder and the effect of gravity, thereby improving the feeding efficiency of the grinding outlet. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of a batching device for coal and alternative fuels provided by this utility model; Figure 2 for Figure 1 A schematic diagram of a batching device for coal and alternative fuels, shown from a lower perspective; Figure 3 for Figure 1 The diagram shows the structure of the grinding cylinder; Figure 4 for Figure 1 The diagram shows the structure of the feeding cylinder; Figure 5 for Figure 1 The diagram shows the structure of the discharge port; The diagram is labeled as follows: 1. Batching box; 101. Upper box; 102. Lower box; 2. Second feed inlet; 3. Placement plate; 4. Stirring motor; 5. Feed pipe; 6. Feed solenoid valve; 7. Feed pipe; 8. Limiting ring; 9. Grinding discharge pipe; 10. Rotating plate; 11. Protective ring; 12. Grinding cylinder; 13. Grinding roller; 14. Grinding motor; 15. Limiting plate; 16. Filter hole; 17. Filter frame; 18. Tension ring; 19. Rotating motor; 20. Protective groove; 21. Discharge cylinder; 22. Grinding solenoid valve; 23. Discharge port. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] refer to Figures 1 to 5 This utility model provides a batching device for coal and alternative fuels, comprising: a batching box 1, wherein a first inlet and a second inlet 2 are respectively provided at both ends of the top of the batching box 1; the first inlet is fixedly connected to an outlet 23 via an inlet pipe 7; the outlet 23 is located at the bottom of a placement plate 3; the bottom of the placement plate 3 is connected to the top of the batching box 1 via a bracket; a rotary motor 19 is installed on the top of the placement plate 3; the drive end of the rotary motor 19 is connected to the bottom of a rotating plate 10; a plurality of grinding cylinders 12 with top openings are installed on the top of the rotating plate 10; a plurality of grinding rollers 13 are installed inside the grinding cylinders 12; and the grinding rollers 13 are connected to the grinding cylinders 12 via a transmission mechanism. The grinding cylinder 12 is connected to the grinding motor 14 on its outer surface. The lower end of the outer surface of the grinding cylinder 12 is provided with a filter hole 16. The filter hole 16 is slidably connected to a filter frame 17 with a filter screen. The bottom of the grinding cylinder 12 is provided with a grinding outlet. The grinding outlet is connected to the grinding discharge pipe 9 through a grinding solenoid valve 22. The bottom of the grinding discharge pipe 9 passes through the rotating plate 10 and is located above the placement plate 3. The mixing box 1 is equipped with a stirring shaft. The top of the stirring shaft is connected to the drive end of the stirring motor 4. The stirring motor 4 is installed on the top of the mixing box 1. The bottom of the mixing box 1 is provided with a feeding port. The feeding port is connected to the feeding pipe 5 through a feeding solenoid valve 6. The feeding pipe 5 is connected to the burner through a pipe.

[0019] It should be noted that the grinding roller 13, the transmission mechanism and the grinding motor 14 adopt existing technology.

[0020] By setting multiple grinding cylinders 12, solid alternative fuels can be placed inside, and the solid alternative fuels are ground by grinding rollers 13. The ground solid alternative fuels are then filtered through a filter screen. The filtered solid alternative fuels enter the discharge port 23 through the grinding discharge pipe 9 and enter the batching box 1 through the first feed port. They are then mixed with the coal powder entering the batching box 1 through the second feed port 2. The mixing efficiency is accelerated by driving the stirring shaft to rotate through the stirring motor 4.

[0021] Driven by the rotary motor 19, different grinding cylinders 12 can be aligned with the discharge port 23. By setting different grinding cylinders 12, when the filter screen needs to be cleaned, the grinding cylinder 12 that needs to be cleaned can be rotated to one side of the discharge port 23, and the filter screen can be taken out and cleaned from the outside of the discharge port 23. The whole process does not require stopping the machine, which improves the cleaning efficiency and the efficiency of subsequent batching operations.

[0022] In the embodiments of this utility model, reference is made to Figure 2As shown, a limiting ring 8 is provided at the top of the discharge port 23. The inner diameter of the limiting ring 8 is larger than the outer diameter of the grinding discharge pipe 9, and the bottom of the grinding discharge pipe 9 is located above the limiting ring 8.

[0023] It should be noted that by setting the limiting ring 8, the top of the discharge port 23 can be protected to prevent the ground fuel from being blown away by airflow when it falls, thus avoiding fuel waste.

[0024] In the embodiments of this utility model, reference is made to Figure 2 As shown, the mixing box 1 includes an upper box 101 and a lower box 102. The upper box 101 is rectangular, and the lower box 102 is frustum-shaped. The top of the lower box 102 is larger than the bottom. The feeding port is located at the bottom of the lower box 102.

[0025] It should be noted that by setting the lower box 102 in the shape of a frustum, the mixed fuel can be easily fed into the feed port by the guidance of the inner surface of the lower box 102 and the effect of gravity, thereby improving the feeding efficiency of the feed port.

[0026] In the embodiments of this utility model, reference is made to Figure 3 As shown, the side of the filter frame is provided with a tension ring 18, and the tension ring 18 is U-shaped.

[0027] It should be noted that by setting the tension ring 18, it is easy to pull the grinding frame out of the grinding cylinder 12, thus improving the convenience of use.

[0028] In the embodiments of this utility model, reference is made to Figure 4 As shown, the grinding cylinder 12 is equipped with a feeding cylinder 21 with openings at the top and bottom. The feeding cylinder 21 is truncated cone-shaped. The size of the top of the feeding cylinder 21 is larger than the size of the bottom. The top of the feeding cylinder 21 abuts against the filter frame 17, and the bottom of the feeding cylinder 21 communicates with the grinding outlet.

[0029] It should be noted that by setting a frustum-shaped feeding cylinder 21, the grinding of the alternative fuel can be facilitated to enter the grinding outlet by the guidance of the inner surface of the feeding cylinder 21 and the effect of gravity, thereby improving the feeding efficiency of the grinding outlet.

[0030] In the embodiments of this utility model, reference is made to Figure 3 As shown, the bottom of the rotating plate 10 is provided with a protective ring 11, the protective ring 11 is rotatably connected to the protective groove 20, and the protective groove 20 is provided on the top of the placement plate 3.

[0031] It should be noted that by setting the protective ring 11, the stability of the rotating plate 10 during rotation can be improved by limiting the movement of the protective groove 20.

[0032] In the embodiments of this utility model, reference is made to Figure 1 As shown, the outer surface of the grinding cylinder 12 is fitted inside the limiting ring 8, the limiting ring 8 is disposed on the top of the limiting plate 15, and the bottom of the limiting plate 15 is connected to the top of the rotating plate 10 through a fixed shaft.

[0033] It should be noted that by setting a limiting plate 15 with a limiting ring 8, multiple grinding cylinders 12 can be connected to each other through the limiting plate 15, thereby improving the stability of the placement of the grinding cylinders 12.

[0034] The working principle of the batching device for coal and alternative fuels provided by this utility model is as follows: Driven by the rotary motor 19, different grinding cylinders 12 can be aligned with the discharge port 23. By setting different grinding cylinders 12, when the filter screen needs to be cleaned, the grinding cylinder 12 that needs to be cleaned can be rotated to one side of the discharge port 23, and the filter screen can be taken out and cleaned from the outside of the discharge port 23. The whole process does not require stopping the machine, which improves the cleaning efficiency and the efficiency of subsequent batching operations.

[0035] The circuits and controls involved in this utility model are all existing technologies and will not be described in detail here.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A batching device for coal and alternative fuels, characterized in that, include: A mixing box (1) has a first feed port and a second feed port (2) at its top ends. The first feed port is fixedly connected to a discharge port (23) via a feed pipe (7). The discharge port (23) is located at the bottom of a placement plate (3). The bottom of the placement plate (3) is connected to the top of the mixing box (1) via a bracket. A rotary motor (19) is installed on the top of the placement plate (3). The drive end of the rotary motor (19) is connected to the bottom of a rotating plate (10). A plurality of grinding cylinders (12) with top openings are installed on the top of the rotating plate (10). A plurality of grinding rollers (13) are installed inside the grinding cylinders (12). The grinding rollers (13) are connected to the grinding motor (12) installed on the outer surface of the grinding cylinders (12) via a transmission mechanism. 4) Connected, the lower end of the outer surface of the grinding cylinder (12) is provided with a filter hole (16), the filter hole (16) is slidably connected to a filter frame (17) with a filter screen, the bottom of the grinding cylinder (12) is provided with a grinding outlet, the grinding outlet is connected to the grinding discharge pipe (9) through the grinding solenoid valve (22), the bottom of the grinding discharge pipe (9) passes through the rotating plate (10) and is located above the placement plate (3), the inside of the mixing box (1) is equipped with a stirring shaft, the top of the stirring shaft is connected to the drive end of the stirring motor (4), the stirring motor (4) is installed on the top of the mixing box (1), the bottom of the mixing box (1) is provided with a feeding port, the feeding port is connected to the feeding pipe (5) through the feeding solenoid valve (6), and the feeding pipe (5) is connected to the burner through a pipe.

2. A batching device for coal and alternative fuels according to claim 1, characterized in that, The top of the discharge port (23) is provided with a limiting ring (8), the inner diameter of the limiting ring (8) is larger than the outer diameter of the grinding discharge pipe (9), and the bottom of the grinding discharge pipe (9) is located above the limiting ring (8).

3. A batching device for coal and alternative fuels according to claim 1, characterized in that, The mixing box (1) includes an upper box (101) and a lower box (102). The upper box (101) is rectangular, and the lower box (102) is frustum-shaped. The top of the lower box (102) is larger than the bottom of the lower box (102), and the feeding port is located at the bottom of the lower box (102).

4. A batching device for coal and alternative fuels according to claim 1, characterized in that, The filter frame (17) has a tension ring (18) on its side, and the tension ring (18) is U-shaped.

5. A batching device for coal and alternative fuels according to claim 4, characterized in that, The grinding cylinder (12) is equipped with a feeding cylinder (21) with openings at the top and bottom. The feeding cylinder (21) is truncated cone-shaped. The size of the top of the feeding cylinder (21) is larger than the size of the bottom of the feeding cylinder (21). The top of the feeding cylinder (21) abuts against the filter frame (17), and the bottom of the feeding cylinder (21) is connected to the grinding outlet.

6. A batching device for coal and alternative fuels according to claim 1, characterized in that, The bottom of the rotating plate (10) is provided with a protective ring (11), which is rotatably connected to the protective groove (20), which is located on the top of the placement plate (3).

7. A batching device for coal and alternative fuels according to claim 1, characterized in that, The outer surface of the grinding cylinder (12) is fitted inside the limiting ring (8), the limiting ring (8) is set on the top of the limiting plate (15), and the bottom of the limiting plate (15) is connected to the top of the rotating plate (10) through a fixed shaft.

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