Coal-fired four-way flow dividing device

Abstract

The utility model provides a coal four -way shunt device can realize the directional discharge of coal, namely conventional four -way function, sends the material into a coal yard or the coal bunker before the stove, can realize the discharge to downstream two directions simultaneously, namely the shunt function. The import shunt guide pipe is arranged at the upper portion of the shell, and the import shunt guide pipe is provided with a plurality of discharge pipes; the proportional adjusting baffle is rotatably arranged in the import shunt guide pipe and located above the discharge pipe; the baffle driving device is arranged on the import shunt guide pipe, and the baffle driving device is connected with the proportional adjusting baffle and used for driving the proportional adjusting baffle to rotate; the chute assembly comprises a swing chute and a chute driving device; the swing chute is rotatably arranged in the shell, the inlet of the swing chute is communicated with one discharge pipe of the import shunt guide pipe, and the outlet of the swing chute is communicated with the discharge port of the shell; the chute driving device is arranged on the shell, the chute driving device is connected with the swing chute, and the chute driving device is used for driving the swing chute to swing.

Description

Technical Field

[0001] This utility model relates to a four-way coal diversion device. Background Technology

[0002] In coal-fired power plants or combined heat and power plants, coal from outside the plant is usually stored in the coal yard first. When the boiler needs coal, it is then retrieved from the coal yard and delivered to the boiler's in-furnace coal bunker. However, in some cases, it is desirable to deliver coal from outside the plant, or a portion thereof, directly to the in-furnace coal bunker without passing through the coal yard. This not only improves boiler coal safety but also eliminates the need for coal yard access, saving operating costs. If a conveyor has three discharge directions downstream (e.g., two coal yards + in-furnace coal bunker directions), and the output of the coal inlet conveyor is greater than that of the coal outlet conveyor, then a four-way and diversion function is required. Conventional four-way devices either fail to achieve the desired diversion ratio or are prone to material jamming and blockage during diversion. To solve these problems, it is urgent to design and develop a new type of four-way diversion device. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned deficiencies in the existing technology and provide a coal-fired four-way diversion device with a reasonable structural design. It can realize the directional discharge of incoming coal, that is, the conventional four-way function, which sends the material to a certain coal yard or coal bunker in front of the furnace, and can also realize the simultaneous discharge in two downstream directions, that is, the diversion function.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: a coal-fired four-way diversion device, including a frame shell, with three discharge ports at the lower part of the shell; characterized in that: it also includes an inlet diversion conduit, a proportional adjustment baffle, a baffle driving device, and a chute assembly; the inlet diversion conduit is located at the upper part of the shell, and has several discharge pipes; the proportional adjustment baffle is rotatably located inside the inlet diversion conduit and above the discharge pipes; the baffle driving device is located on the inlet diversion conduit and is connected to the proportional adjustment baffle for driving the proportional adjustment baffle to rotate; the chute assembly includes a swing chute and a chute driving device; the swing chute is rotatably located inside the shell, its inlet is connected to one discharge pipe of the inlet diversion conduit, and its outlet is connected to the discharge port of the shell; the chute driving device is located on the shell and is connected to the swing chute for driving the swing chute to swing; the chute assembly consists of several sets, the number of which is consistent with the number of discharge pipes of the inlet diversion conduit, with one set of swing chute matching one discharge pipe.

[0005] The chute assembly described in this utility model also includes a trunnion, and the swing chute is rotatably mounted inside the housing via the trunnion.

[0006] The baffle driving device and the chute driving device described in this utility model are electric push rods or electro-hydraulic push rods.

[0007] The present invention comprises two discharge pipes and two sets of chute assemblies.

[0008] Compared with the prior art, this utility model has the following advantages and effects: it can realize the directional discharge of incoming coal, that is, the conventional four-way function, to send the material into a certain coal yard or coal bunker in front of the furnace, and it can also realize the simultaneous discharge in two downstream directions, that is, the diversion function. Moreover, the diversion ratio is more precise, the discharge direction selection is flexible, and it is not easy to jam or block the material, thereby improving the flexibility and safety of the system operation. Attached Figure Description

[0009] Figure 1 This is a front view structural diagram of an embodiment of the present utility model.

[0010] Figure 2 This is a side view structural diagram of an embodiment of the present utility model. Detailed Implementation

[0011] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0012] This utility model embodiment includes a shell 1, an inlet diversion conduit 2, a proportional adjustment baffle 3, a baffle driving device 6, and a chute assembly.

[0013] The lower part of the outer casing 1 is provided with three discharge ports 5.

[0014] The inlet diversion conduit 2 is located on the upper part of the outer shell 1. It passes through the top plate of the outer shell 1 and is fixed and sealed to the top plate via flanges and screws, facilitating disassembly and internal bearing maintenance and replacement. The inlet diversion conduit 2 has several discharge pipes; in this embodiment, it has two discharge pipes. The proportional adjustment baffle 3 is rotatably mounted inside the inlet diversion conduit 2 and positioned above the discharge pipes. The baffle drive device 6 is mounted on the inlet diversion conduit 2 and connected to the proportional adjustment baffle 3. The drive device 6 drives the proportional adjustment baffle 3 to rotate, allowing continuous adjustment of its angle to continuously adjust the material distribution ratio on both sides, thus feeding the material into different swing chutes 4.

[0015] The chute assembly includes a swing chute 4, a trunnion 7, and a chute drive device 8. The swing chute 4 is rotatably mounted inside the housing 1 via the trunnion 7. Its inlet is connected to one discharge pipe of the inlet diversion conduit 2, and its outlet is connected to the discharge port 5 of the housing 1. The chute drive device 8 is mounted on the housing 1 and connected to the swing chute 4 to drive the swing chute 4 to swing. There are several sets of chute assemblies, the number of which is consistent with the discharge pipes of the inlet diversion conduit 2. Each set of chute assemblies has one swing chute 4 matched with one discharge pipe. Each swing chute 4 can swing independently without affecting others. The outlet can be aligned with any one or two of the three discharge ports of the housing 1 to achieve the functions of conventional four-way (all materials are discharged in one discharge direction) or diversion (materials are discharged in two discharge directions). In this embodiment, there are two sets of chute assemblies.

[0016] The baffle drive device 6 and the chute drive device 8 can be in various forms such as electric push rod, electro-hydraulic push rod or manual. For example, if the diversion ratio does not change after adjustment, the baffle drive device 6 (drive device 3) can be changed to a manual operating handle, and the position can be fixed after the adjustment is completed.

[0017] The inlet diversion duct 2 is installed on the discharge hopper 9 of the belt conveyor, through which the belt conveyor feeds coal into the inlet diversion duct 2. The material is generally distributed roughly centered across the cross-section of the belt conveyor; therefore, by rotating the proportional adjustment baffle 3 in both directions, the discharge ratio on both sides can be continuously adjusted within a certain range. Even if the material distribution on one side of the belt conveyor's cross-section is biased, the desired diversion ratio can be achieved by rotating the proportional adjustment baffle 3. In typical coal-fired power plants, the output of the coal feeding belt conveyor is approximately 40-60% of the output of the coal inlet belt conveyor. This invention can effectively achieve this diversion ratio range.

[0018] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components. The above description is merely illustrative of the structure of this utility model. All equivalent or simple variations made based on the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, all of which should fall within the protection scope of this utility model.

Claims

1. A coal-fired four-way diversion device, comprising a frame housing, with three discharge ports at the lower part of the housing; characterized in that: It also includes an inlet diversion conduit, a proportional adjustment baffle, a baffle drive device, and a chute assembly; the inlet diversion conduit is located at the upper part of the shell and has several discharge pipes; the proportional adjustment baffle is rotatably located inside the inlet diversion conduit and above the discharge pipes; the baffle drive device is located on the inlet diversion conduit and connected to the proportional adjustment baffle to drive the proportional adjustment baffle to rotate; the chute assembly includes a swing chute and a chute drive device; the swing chute is rotatably located inside the shell, its inlet is connected to one discharge pipe of the inlet diversion conduit, and its outlet is connected to the discharge port of the shell; the chute drive device is located on the shell and connected to the swing chute to drive the swing chute to swing; there are several sets of chute assemblies, the number of which is consistent with the number of discharge pipes of the inlet diversion conduit, and one set of chute assemblies has one swing chute matched with one discharge pipe.

2. The coal-fired four-way diversion device according to claim 1, characterized in that: The chute assembly also includes a trunnion, through which the oscillating chute is rotatably mounted within the housing.

3. The coal-fired four-way diversion device according to claim 1, characterized in that: The baffle driving device and the chute driving device are electric push rods or electro-hydraulic push rods.

4. The coal-fired four-way diversion device according to claim 1, characterized in that: There are two discharge pipes and two sets of chute assemblies.

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