Coal blending device with multiple branch bins

Abstract

The utility model discloses a coal blending device with multiple branch bins, which comprises a first conveying device, the first conveying device is provided with a feed port I connected with a first-class coal supply device, a feed port II connected with a second-class coal supply device and a discharge port, and the feed port I, the feed port II and the discharge port are arranged on the first conveying device along a conveying path of the first conveying device. During coal blending, fire coal provided by the first-class coal supply equipment and fire coal provided by the second-class coal supply equipment need to be conveyed for a certain distance along the conveying path after entering the conveying device, and then enter downstream equipment through the discharging port; therefore, movement paths of different types of fire coal are unified, the problems that different types of fire coal enter the discharging port in different movement trends, the fire coal collides with one another and bounces at the discharging port, and the coal discharging efficiency of the discharging port is reduced are solved, it is guaranteed that the fire coal reaching the discharging port can smoothly enter downstream equipment, and the coal discharging efficiency of the discharging port is improved. The problem that a coal blending device with multiple branch bins is easy to block is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of material distribution, in particular to a coal distribution device with multiple compartments. Background Art

[0002] In order to reduce the comprehensive operating cost of coal-fired power plants, coal-fired power plants need to mix various types of coal before blending and burning them. By increasing the amount of inferior coal blended, the purpose of reducing the cost of purchasing fuel is achieved. The existing multi-channel coal blending device includes at least two supply devices for supplying different types of coal, and the two supply devices share a conveying pipeline. When the coal in the two supply devices is collected in the same conveying pipeline, it will collide with each other and cause the coal to bounce around. If the bouncing phenomenon occurs at the discharge port of the conveying pipeline, it will occupy additional circulation space at the discharge port, thereby affecting the coal discharge efficiency, causing the coal blending device to be easily blocked during the coal transportation process, affecting the power supply progress.

[0003] Therefore, there is an urgent need for a multi-channel coal blending device that is not easily blocked during the coal blending process. Utility Model Content

[0004] The purpose of the utility model is to provide a coal distribution device with multiple compartments. In order to solve the problems existing in the above-mentioned prior art, feed port one and feed port two are both arranged upstream of the discharge port along the conveying path of the first conveying device, thereby avoiding mutual interference of the coal entering the first conveying device at the discharge port, thereby making the coal distribution device with multiple compartments less likely to be blocked.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a multi-channel coal distribution device, comprising:

[0007] The first conveying device is provided with at least one feed port 1 connected to the first category coal supply equipment, a feed port 2 connected to the second category coal supply equipment, and a discharge port. Along the conveying path of the first conveying device, the feed port 1 and the feed port 2 are both located upstream of the discharge port.

[0008] Preferably, the first category coal supply equipment is a storage bin, and the outlet end of the storage bin is an inverted cone structure.

[0009] Preferably, the first conveying device is arranged below the inverted cone structure, and the feed port is opened on the upper side of the first conveying device.

[0010] Preferably, the multi-channel coal distribution device also includes a second conveying device, the feed port of the second conveying device is connected to the discharge end of the second category coal supply equipment, and the discharge port of the second conveying device is connected to the feed port 2.

[0011] Preferably, the second conveying device is arranged above the first conveying device, the discharge port of the second category coal supply equipment is opened on the lower side of the second category coal supply equipment, the second feed port is opened on the upper side of the first conveying device, and the discharge port of the second conveying device corresponds to the second feed port in the vertical direction.

[0012] Preferably, a buffer plate is movably installed between the discharge port of the second conveying device and the second feed port, a connecting shaft is installed at one end of the buffer plate, the connecting shaft passes through the side wall of the external channel of the second feed port and is rotatably connected to the side wall, a counterweight rod is installed on the part of the connecting shaft extending out of the side wall, and the buffer plate and the counterweight rod are arranged in a V-shape with the opening downward along the axial direction of the connecting shaft.

[0013] Preferably, the second category coal supply equipment is an auxiliary silo, and the auxiliary silo includes:

[0014] A discharge hopper, the outlet end of which is an inverted cone structure;

[0015] A diverter hopper, the outlet end of which is an inverted cone structure, the diverter hopper is arranged on one side of the discharge hopper, the feed port of the diverter hopper is connected to the discharge hopper, and the second conveying device is arranged below the diverter hopper, the discharge port of the diverter hopper is connected to the feed port of the second conveying device.

[0016] Preferably, the multi-channel coal distribution device also includes a third conveying device, which is arranged below the discharge hopper, the feed port of the third conveying device is connected to the discharge port of the discharge hopper, and the discharge port of the third conveying device is connected to the downstream equipment.

[0017] Preferably, the first conveying device is a belt coal feeder, and the belt coal feeder comprises:

[0018] Transportation pipelines;

[0019] A conveyor belt, wherein the conveyor belt is arranged inside the conveying pipeline, and the conveying direction of the conveyor belt is parallel to the conveying pipeline;

[0020] A driving device, wherein a driving end of the driving device is drivingly connected to a driving roller at the end of the conveyor belt.

[0021] Preferably, the feed inlet 1, the feed inlet 2, the feed inlet of the second conveying device, and the feed inlet of the third conveying device are all provided with control valves for controlling the discharge amount.

[0022] Compared with the prior art, the utility model has achieved the following technical effects:

[0023] The utility model provides a multi-channel coal blending device, in which a feed port 1 connected to a first category coal supply device and a feed port 2 connected to a second category coal supply device are both arranged upstream of a discharge port along a conveying path of the first conveying device. During coal blending, the coal provided by the first category coal supply device and the coal provided by the second category coal supply device need to be conveyed a certain distance along the conveying path after entering the conveying device, and then enter the downstream equipment through the discharge port, thereby unifying the movement paths of coal of different categories, avoiding the problem that coal of different categories enter the discharge port with different movement trends, causing the coal to collide and bounce with each other at the discharge port, thereby reducing the coal discharge efficiency of the discharge port, thereby ensuring that the coal reaching the discharge port can smoothly enter the downstream equipment, thereby solving the problem that the multi-channel coal blending device is easily blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of an embodiment of the utility model;

[0026] Figure 2 for Figure 1 A front view of

[0027] Figure 3 A cross-sectional view of a second connection position between a discharge port and a feed port of a second conveying device;

[0028] Figure 4 It is a top view of the belt coal feeder;

[0029] Figure 5 for Figure 4 Sectional view along AA direction;

[0030] Among them, 1. the first conveying device; 2. the first feed port; 3. the second feed port; 4. the discharge port; 5. the storage bin; 6. the second conveying device; 7. the buffer plate; 8. the connecting shaft; 9. the counterweight rod; 10. the auxiliary bin; 11. the discharge hopper; 12. the diversion hopper; 13. the third conveying device; 14. the conveying pipeline; 15. the conveyor belt; 16. the driving device; 17. the driving roller; 18. the control valve. DETAILED DESCRIPTION

[0031] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. 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.

[0032] The utility model aims to provide a coal distribution device with multiple compartments, so as to solve the problem that the coal distribution device with multiple compartments in the prior art is easily blocked.

[0033] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] like Figure 1-5 As shown, the multi-channel coal distribution device provided by the embodiment of the utility model includes a first conveying device 1, and the first conveying device 1 is provided with a feed port 1 2, a feed port 2 3 and a discharge port 4. The coal provided by the first category coal supply device enters the first conveying device 1 through the feed port 1 2, and the coal provided by the second category coal supply device enters the first conveying device 1 through the feed port 2 3, thereby completing the mixing of different categories of coal. By adjusting the supply speed of the first category coal supply device and the second category coal supply device and the transmission rate of the first conveying device 1, the ratio of the first category coal and the second category coal entering the downstream combustion equipment can be controlled to meet the needs of combustion and power generation. The two types of coal entering the first conveying device 1 are transported to the discharge port 4 of the first conveying device 1 along the conveying path of the first conveying device 1, and enter the downstream equipment through the discharge port 4. After entering the first conveying device 1, the two types of coal are first transported a certain distance along the conveying path, and then enter the downstream equipment through the discharge port 4. In this process, the movement paths of the two types of coal are unified, so that the two types of coal enter the discharge port 4 with the same movement trend, thereby avoiding the problem of coal colliding and bouncing against each other at the discharge port 4, which leads to a decrease in the coal discharge efficiency of the discharge port 4, and thus ensuring that the coal reaching the discharge port 4 can smoothly enter the downstream equipment, thereby achieving the technical effect that the multi-channel coal distribution device is not easily blocked by coal.

[0035] Of course, multiple feed ports (more than two) can be set on the first conveying device 1 at the same time, and any feed port is connected to a corresponding coal supply device, and along the conveying path of the first conveying device 1, all feed ports are located upstream of the discharge port 4.

[0036] Those skilled in the art can understand that: the first conveying device 1 in the present application can adopt existing conveying devices such as scraper coal feeder, chain coal feeder, auger coal feeder, belt coal feeder, etc., and no specific limitation is made here.

[0037] Furthermore, the first category coal supply equipment is a storage bin 5, and the outlet end of the storage bin 5 is an inverted cone structure. When in use, the inverted cone-shaped inner wall of the storage bin 5 has a certain guiding effect on the material, thereby being able to guide the coal in the storage bin 5 into the first conveying device 1 from the outlet at the bottom of the inverted cone-shaped outlet end, thereby avoiding the problem of coal remaining in the storage bin 5 and being unable to be discharged.

[0038] Preferably, the first conveying device 1 is arranged below the inverted cone structure, and the feed port 1-2 is opened on the upper side of the first conveying device 1. The coal in the storage bin 5 can be directly discharged from the discharge port at the bottom of the inverted cone outlet end under the action of gravity, and the discharge port at the bottom of the outlet end corresponds to the feed port 1-2 in the vertical direction. The discharged coal can directly fall into the first conveying device 1 through the feed port 1-2, and the coal in the storage bin 5 can be transferred to the first conveying device 1 for subsequent transportation without setting a separate driving device 16, which simplifies the device and reduces energy consumption.

[0039] Furthermore, as coal supply equipment, the first category coal supply equipment and the second category coal supply equipment are both large in size. Therefore, the two discharge ports are far apart and cannot be connected to the first conveying device 1 at the same time. Based on this, the present application sets up a second conveying device 6, and the feed port of the second conveying device 6 is connected to the discharge end of the second category coal supply equipment, and the discharge port of the second conveying device 6 is connected to the feed port 23. Through the second conveying device 6, the second category coal supply equipment and the storage bin 5 are connected to the first conveying device 1 at the same time.

[0040] More preferably, the second conveying device 6 is arranged above the first conveying device 1, the discharge port of the second category coal supply equipment is opened on the lower side of the second category coal supply equipment, the feed port 23 is opened on the upper side of the first conveying device 1, and the discharge port of the second conveying device 6 corresponds to the feed port 23 in the vertical direction. There is no need to separately set up a driving device 16, so that the fuel coal discharged from the second category coal supply equipment can directly fall into the second conveying device 6, which simplifies the device and reduces energy consumption.

[0041] See also Figure 3A buffer plate 7 is movably installed between the discharge port of the second conveying device 6 and the feed port 23. A connecting shaft 8 is installed at one end of the buffer plate 7. The connecting shaft 8 passes through the side wall of the external channel of the feed port 23 and is rotatably connected to the side wall. A counterweight rod 9 is installed on the part of the connecting shaft 8 extending out of the side wall. The buffer plate 7 and the counterweight rod 9 are arranged in a V-shape with the opening downward in the axial field of view along the connecting shaft 8. The counterweight rod 9 and the buffer plate 7 form a lever structure with the connecting shaft 8 as the fulcrum. In the absence of external force, the counterweight rod 9 can make the buffer plate 7 tilted in the external channel of the feed port 23. At this time, the coal falling from the discharge port of the second conveying device 6 will not be able to directly pass through the channel outside the feed port 23, but will first fall onto the inclined buffer plate 7. Under the action of the coal, the gravity on the side of the buffer plate 7 will be much greater than the gravity on the side of the counterweight rod 9, thereby causing the end of the buffer plate 7 away from the connecting shaft 8 to rotate downward with the connecting shaft 8 as the center, so that the coal continues to fall into the feed port 23, thereby achieving buffering of the falling coal, avoiding the problem of easy damage to the first conveying device 1 due to excessive impact force of the falling coal, and improving the service life of the multi-way coal distribution device.

[0042] As a preferred mode, the second category coal supply equipment is an auxiliary silo 10, and the auxiliary silo 10 includes: a discharge hopper 11 and a diverter hopper 12, wherein the diverter hopper 12 is arranged on one side of the discharge hopper 11, and the feed port of the diverter hopper 12 is connected to the discharge hopper 11, and the second conveying device 6 is arranged below the diverter hopper 12, and the discharge port of the diverter hopper 12 is connected to the feed port of the second conveying device 6. A third conveying device 13 is arranged below the discharge hopper 11, and the feed port of the third conveying device 13 is connected to the discharge port of the discharge hopper 11, and the discharge port of the third conveying device 13 is directly connected to the downstream equipment. The arrangement of the diverter hopper 12 enables the multi-way coal distribution device to provide mixed coal through the first category coal supply device and the second category coal supply device, while being able to supply a certain category of coal through the second category coal supply device alone, thereby improving the diversity of use of the multi-way coal distribution device. At the same time, the outlet end of the discharge hopper 11 and the outlet end of the diverter hopper 12 are both inverted cone structures, which can effectively prevent the coal from remaining in the discharge hopper 11 or the diverter hopper 12.

[0043] Of course, the discharge port of the third conveying device 13 can be connected to the same downstream equipment as the discharge port of the first conveying device 1, or the discharge port of the third conveying device 13 and the discharge port of the first conveying device 1 can be connected to different downstream equipment according to actual needs.

[0044] Of course, the second conveying device 6 and the third conveying device 13 can both adopt existing conveying devices such as scraper coal feeder, chain coal feeder, auger coal feeder, belt coal feeder, etc., just like the first conveying device 1.

[0045] Furthermore, the operator can select the specific setting form of the first conveying device 1, the second conveying device 6, and the third conveying device 13 according to whether there is sticky coal passing through the conveying path, so as to avoid the sticky coal blocking the conveying channel. Specifically, when there is sticky coal passing through the conveying path, the first conveying device 1 and / or the second conveying device 6 and / or the third conveying device 13 in the present application use a belt coal feeder, which includes: a conveying pipeline 14, a conveyor belt 15 and a driving device 16; wherein the conveyor belt 15 is arranged inside the conveying pipeline 14, and the conveying direction of the conveyor belt 15 is parallel to the conveying pipeline 14, and the driving roller 17 at the end of the conveyor belt 15 passes through the conveying pipeline 14 and is connected to the driving device 16 for transmission, so that the conveyor belt 15 can be driven to run by the driving device 16. After the coal falls onto the conveyor belt 15, the conveyor belt 15 drives the coal to move downstream through friction. In the case of sticky coal, the belt coal feeder will not generate squeezing force in the process of conveying coal downstream compared to the push-type conveying scraper coal feeder, chain coal feeder, and auger coal feeder. Therefore, the contacting coal and the conveying pipeline 14 will not be squeezed by the driving force of conveying coal downstream, which effectively avoids the problem of coal being blocked in the conveying pipeline 14. The driving device 16 can be a driving motor, a gear reducer, etc.

[0046] More preferably, the feed port 1 2, the feed port 2 3, the feed port of the second conveying device 6, and the feed port of the third conveying device 13 are all provided with a control valve 18 for controlling the discharge amount. Any control valve 18 is independent of each other and can be adjusted steplessly. The control valve 18 can directly control the rate at which the coal enters the next structure from the upper structure, thereby accurately controlling the ratio of the first category of coal and the second category of coal.

[0047] Furthermore, the transmission rates of the first conveying device 1, the second conveying device 6 and the third conveying device 13 can be controlled, and the rate at which the coal enters the next structure from the upper structure can be adjusted in conjunction with the control valve 18, so as to further improve the accuracy of the proportion of different types of coal.

[0048] The control valve 18 may be a solenoid valve, a gate valve or other known valves with a stepless regulating effect.

[0049] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A multi-channel coal distribution device, characterized in that: include: A first conveying device (1), wherein the first conveying device (1) is provided with at least one feed port (2) connected to a first type of coal supply equipment, one feed port (3) connected to a second type of coal supply equipment, and a discharge port (4), and along the conveying path of the first conveying device (1), the feed port (2) and the feed port (3) are both located upstream of the discharge port (4).

2. The multi-channel coal distribution device according to claim 1 is characterized in that: The first category coal supply equipment is a storage bin (5), and the outlet end of the storage bin (5) is an inverted cone structure.

3. The multi-channel coal distribution device according to claim 2 is characterized in that: The first conveying device (1) is arranged below the inverted cone structure, and the feed port 1 (2) is opened on the upper side of the first conveying device (1).

4. The multi-channel coal distribution device according to claim 1 is characterized in that: The multi-channel coal distribution device also includes a second conveying device (6), the feed port of the second conveying device (6) is connected to the discharge end of the second category coal supply equipment, and the discharge port of the second conveying device (6) is connected to the feed port 2 (3).

5. The multi-channel coal distribution device according to claim 4 is characterized in that: The second conveying device (6) is arranged above the first conveying device (1), the discharge port of the second category coal supply equipment is opened on the lower side of the second category coal supply equipment, the second feed port (3) is opened on the upper side of the first conveying device (1), and the discharge port of the second conveying device (6) corresponds to the second feed port (3) in the vertical direction.

6. The multi-channel coal distribution device according to claim 5, characterized in that: A buffer plate (7) is movably installed between the discharge port of the second conveying device (6) and the second feed port (3), and a connecting shaft (8) is installed at one end of the buffer plate (7). The connecting shaft (8) passes through the side wall of the external channel of the second feed port (3) and is rotatably connected to the side wall. A counterweight rod (9) is installed on the part of the connecting shaft (8) extending out of the side wall. The buffer plate (7) and the counterweight rod (9) are arranged in a V-shape with an opening downward along the axial direction of the connecting shaft (8).

7. The multi-channel coal distribution device according to claim 4 is characterized in that: The second type of coal supply equipment is an auxiliary silo (10), and the auxiliary silo (10) comprises: A discharge hopper (11), wherein the outlet end of the discharge hopper (11) is an inverted cone-shaped structure; The diverter hopper (12) has an outlet end of an inverted cone structure. The diverter hopper (12) is arranged on one side of the discharge hopper (11). The feed port of the diverter hopper (12) is connected to the discharge hopper (11). The second conveying device (6) is arranged below the diverter hopper (12). The discharge port of the diverter hopper (12) is connected to the feed port of the second conveying device (6).

8. The multi-channel coal distribution device according to claim 7 is characterized in that: The multi-channel coal distribution device also includes a third conveying device (13), which is arranged below the discharge hopper (11), and the feed port of the third conveying device (13) is connected to the discharge port of the discharge hopper (11), and the discharge port of the third conveying device (13) is connected to the downstream equipment.

9. The multi-channel coal distribution device according to claim 1, characterized in that: The first conveying device (1) is a belt-type coal feeder, and the belt-type coal feeder comprises: A delivery pipeline (14); A conveyor belt (15), wherein the conveyor belt (15) is arranged inside the conveying pipeline (14), and the conveying direction of the conveyor belt (15) is parallel to the conveying pipeline (14); A driving device (16), wherein a driving end of the driving device (16) is drivingly connected to a driving roller (17) at the end of the conveyor belt (15).

10. The multi-channel coal distribution device according to claim 8, characterized in that: The feed inlet 1 (2), the feed inlet 2 (3), the feed inlet of the second conveying device (6), and the feed inlet of the third conveying device (13) are all provided with control valves (18) for controlling the discharge amount.

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