Hydraulic bidirectional slide plate gate for raw coal bunker separation

Abstract

The utility model relates to the technical field of coal conveying equipment, and discloses a hydraulic two-way slide plate gate for raw coal bunker separation, which comprises a gate frame, the middle of the gate frame is provided with a vertically through blanking hole, the middle of the blanking hole is provided with a partition plate along the radial direction of the blanking hole, and two ends of the gate frame are movably provided with sealing plates controlled by a hydraulic cylinder. In the initial state, the ends of the two sealing plates abut against the partition plate tightly to seal the discharging hole. Each sealing plate is of a broken line type structure which fluctuates up and down; according to the utility model, by optimizing the structure of the sealing plate, the structural strength of the sealing plate is effectively enhanced, the deformation probability of the sealing plate is reduced, the sealing plate is ensured to be opened smoothly when coal is discharged, and the work is ensured to be carried out smoothly.

Description

Technical Field

[0001] The utility model relates to the technical field of coal conveying equipment, in particular to a hydraulic double - acting plug door for bunker separation of raw coal bins. Background Art

[0002] In order to meet the requirements of power market regulation, realize the switching and utilization of different quality coal materials at different power consumption times, so as to ensure the fundamental interests of power plants; usually, a partition board is arranged in the raw coal bin to divide its interior into two cavities to store two kinds of coal materials with different qualities, so as to switch different coal materials at different power consumption times. In order to meet the requirements of separate or simultaneous discharging of the two cavities, a hydraulic plug door with double - way openings is usually arranged at the bottom of the raw coal bin to flexibly control the discharging operation.

[0003] For the existing hydraulic plug door, the sealing plate used for sealing the bottom of the coal bunker is usually a flat steel plate. Due to the need to bear the large gravity of the coal materials inside the coal bunker, it is easy to deform after multiple uses, resulting in jamming when moving and opening. Therefore, there is an urgent need for a hydraulic double - acting plug door for bunker separation of raw coal bins that can ensure the structural strength of the sealing plate and reduce the probability of its deformation. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hydraulic double - acting plug door for bunker separation of raw coal bins. By optimizing the structure of the sealing plate, its structural strength is effectively enhanced, the probability of its deformation is reduced, and when the coal materials are discharged, the sealing plate can be opened smoothly, ensuring the smooth progress of the work.

[0005] The utility model adopts the following technical solutions:

[0006] A hydraulic double - acting plug door for bunker separation of raw coal bins, including a door frame. A feeding hole penetrating up and down is arranged in the middle of the door frame. A partition is arranged along the radial direction in the middle of the feeding hole. Sealing plates controlled by hydraulic cylinders are movably arranged at both ends of the door frame. In the initial state, the ends of the two sealing plates are in close contact with the partition to seal the feeding hole; each of the sealing plates is a zigzag structure with ups and downs.

[0007] Preferably, a slideway communicated with the feeding hole is arranged in the door frame, and the sealing plate slides in the slideway.

[0008] Preferably, a cleaning block is arranged on the top wall of the slideway outside the feeding hole, and the cleaning block is matched with the groove structure formed by the top of the sealing plate.

[0009] Preferably, plugging plates are provided at the bottom and one side of the sealing plate. The plugging plate and the groove at the bottom of the sealing plate form a receiving cavity. The unblocked end of the sealing plate is conductively connected to an air flow chamber that is conductively connected to an air source. Air holes are provided on the side wall of the groove at the upper part of the plugging plate and are conductively connected to the inside of the receiving cavity.

[0010] Preferably, the air holes are obliquely opened upward.

[0011] Preferably, two rows of the air holes opposite to each other in the groove at the upper part of the sealing plate are asymmetrically arranged.

[0012] Preferably, a diversion plate is provided in the receiving cavity. Both side surfaces of the diversion plate are connected to the inner wall of the receiving cavity corresponding to the bottom of the air holes; the receiving cavity above the diversion plate is conductively connected to the air flow chamber.

[0013] Preferably, an annular mounting seat is provided on the gantry of the blanking hole.

[0014] Preferably, receiving grooves are provided on both sides of the partition plate. When the blanking hole is in a sealed state, the sealing plate is located in the receiving groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By optimizing the design of the sealing plate into a zigzag structure with undulations up and down, the present invention can disperse the pressure from the coal material to multiple directions, reduce the pressure borne by a single point of the sealing plate, thereby improving the overall bearing capacity of the sealing plate, effectively reducing the probability of deformation of the sealing plate, and further reducing the adverse effects existing when the sealing plate moves during the working process, ensuring the smooth progress of the work. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0017] Figure 2 is a schematic structural diagram of the sealing plate of an embodiment of the present application. Detailed Embodiments

[0018] The present invention will be clearly and completely described below with reference to the drawings and embodiments:

[0019] Such as Figures 1 to 2As shown in the figure, a hydraulic two-way plug door for coal bunker bin separation according to the present utility model includes a door frame 1. The door frame 1 is of an overall cuboid structure. A feeding hole 2 penetrating up and down is provided in the middle of the door frame 1. An annular mounting seat 3 is coaxially arranged on the door frame 1 above the feeding hole 2 for connecting to the bottom of the coal bunker. A partition 4 is arranged in the middle of the feeding hole 2 along its radial direction, and the partition 4 corresponds to the partition 4 inside the coal bunker. Sealing plates 6 controlled by hydraulic cylinders 5 are movably arranged at both ends of the door frame 1. In the initial state, the ends of both sealing plates 6 are in close contact with the partition 4 to seal the feeding hole 2. When it is necessary to switch coal materials of different qualities, the corresponding hydraulic cylinder 5 is controlled to work to drive the sealing plate 6 to move out of the feeding hole 2. Each sealing plate 6 is of a zigzag structure with undulations up and down. At this time, multiple triangular-like structures can be formed in the longitudinal section of the sealing plate 6, effectively enhancing its structural strength. At the same time, the optimized design of the zigzag structure can disperse the pressure from the coal material to multiple directions, reducing the pressure borne by a single point of the sealing plate 6, thereby improving the overall bearing capacity of the sealing plate 6, effectively reducing the probability of deformation of the sealing plate 6, and further reducing the adverse effects existing when the sealing plate 6 moves during the working process, ensuring the smooth progress of the work.

[0020] Further, a slideway 7 communicating with the feeding hole 2 is arranged inside the door frame 1. The sealing plate 6 slides in the slideway 7. When the sealing plate 6 seals the feeding hole 2, both sides are in the slideway 7, so that the slideway 7 can provide support for the sealing plate 6. In addition, receiving grooves are arranged on both sides of the partition 4. When the feeding hole 2 is in a sealed state, the sealing plate 6 is located in the receiving groove, so as to provide support for the end of the sealing plate 6 and ensure the bearing capacity of the sealing plate 6.

[0021] Further, a cleaning block is arranged on the inner top wall of the slideway 7 outside the feeding hole 2. The cleaning block is not shown in the figure and is matched with the groove structure formed on the top of the sealing plate 6. The setting of the cleaning block can push out the coal material falling into the upper groove of the sealing plate 6 when the sealing plate 6 moves out of the feeding hole 2.

[0022] Further, blocking plates 8 are arranged at the bottom and one side of the sealing plate 6. The blocking plates 8 and the groove at the bottom of the sealing plate 6 form a receiving cavity 9. One end of the sealing plate 6 that is not blocked is conductively connected to an air flow chamber 10 communicated with the air source. A pipeline connected to the air source is arranged on one side of the air flow chamber 10. Through holes 11 for the pipeline to move are arranged at both ends of the door frame 1. Air holes 12 communicating with the inside of the receiving cavity 9 are arranged on the side wall of the groove on the upper part of the blocking plate 8. With such a setting, the air flow chamber 10 can be connected to the air source to regularly introduce high-pressure gas into the sealed coal bunker interior to loosen the coal material, avoiding the situation that the coal material that has not been discharged for a long time is blocked and accumulated in the coal bunker and cannot be discharged subsequently. It also avoids the operation of damaging the side wall of the coal bunker for unclogging, ensuring the structural strength of the coal bunker.

[0023] Preferably, each air hole 12 is formed obliquely upward along the inner wall of the groove, so as to realize the inclined action of the air flow on the coal material in the coal bunker, and reduce the amplitude of the upward turning of the coal material in the coal bunker caused by the straight-up and straight-down blowing. In addition, the two rows of air holes 12 opposite to each other in the groove on the upper part of the sealing plate 6 are asymmetrically arranged, that is, the air holes 12 on both sides of the two side walls in the groove are alternately arranged one in front of the other, which not only avoids mutual influence between them, but also increases the spraying area of the air flow to increase the disturbance of the coal material and avoid the accumulation and blockage of the coal material; the pressure of the air flow during each spraying can be adjusted according to actual needs. For example, it can be larger initially and gradually smaller later, as long as the coal material is prevented from accumulating and sticking for a long time.

[0024] A flow guide plate 13 is further arranged in the accommodating cavity 9. The flow guide plate 13 is in the shape of an angle plate, and the ridge line of the flow guide plate 13 is arranged upward. The two side surfaces of the flow guide plate 13 are connected to the inner wall of the accommodating cavity 9 corresponding to the bottom of the air hole 12; both ends of the flow guide plate 13 are sealed, and the accommodating cavity 9 above the flow guide plate 13 is communicated with the air flow chamber 10 to ensure that the air flow enters the accommodating cavity 9 above the flow guide plate 13 and is smoothly discharged from the air hole 12 along the inclined surface of the flow guide plate 13; the arrangement of the flow guide plate 13 can avoid the situation that the coal material enters the accommodating cavity 9 through the air hole 12 and accumulates and is not easily discharged, and the inclined surface of the flow guide plate 13 can be used to reduce the accumulation amount of the coal material inside it.

[0025] In this utility model, by optimizing the sealing plate 6 into a zigzag structure with ups and downs, the structural strength can be effectively increased, the pressure from the coal material can be dispersed in multiple directions, the pressure borne by a single point of the sealing plate 6 is reduced, thereby improving the overall bearing capacity of the sealing plate 6 and effectively reducing the probability of deformation of the sealing plate 6; when the coal material in the coal bunker has not been discharged for a long time, the air source switch can be turned on to introduce high-pressure air flow into the accommodating cavity 9 through the air flow chamber 10. The high-pressure air flow is ejected from the air hole 12 and acts on the coal material in the coal bunker to loosen the coal material regularly and reduce the probability of blockage. The structure is simple, the operation and use are convenient, and the practicability is strong.

Claims

1. A hydraulic double-direction plug door for bin separation of raw coal bunker, characterized in that: It includes a gantry, in the middle of which there is a blanking hole penetrating up and down. A partition is arranged radially along the middle of the blanking hole. Sealing plates controlled by hydraulic cylinders are movably arranged at both ends of the gantry. In the initial state, the ends of the two sealing plates are both in close contact with the partition to seal the blanking hole; each of the sealing plates is of a zigzag structure with ups and downs.

2. The hydraulic double-direction plug gate for bunker separation of raw coal bins according to claim 1, wherein: A slideway communicated with the blanking hole is arranged in the gantry, and the sealing plate slides in the slideway.

3. The hydraulic two-way plug door for the bunker separation of raw coal bins according to claim 2, wherein: A cleaning block is arranged on the inner top wall of the slideway outside the blanking hole, and the cleaning block is matched with the groove structure formed by the top of the sealing plate.

4. The hydraulic double-direction plug door for bin separation of raw coal bunker according to claim 1, characterized in that: Blocking plates are arranged at the bottom and one side of the sealing plate. The blocking plates and the groove at the bottom of the sealing plate form an accommodating cavity. The unblocked end of the sealing plate is conductively connected to an air flow chamber communicated with a gas source. Air holes communicated with the accommodating cavity are arranged on the side wall of the groove above the blocking plate.

5. The hydraulic double-direction plug door for bin separation of raw coal bunker according to claim 4, characterized in that: The air holes are obliquely opened upward.

6. The hydraulic double-direction plug gate for bunker separation of raw coal bins according to claim 5, characterized in that: Two columns of the air holes opposite to each other in the groove on the upper part of the sealing plate are asymmetrically arranged.

7. The hydraulic double-direction plug door for coal bunker bin separation according to claim 6, characterized in that: A flow guide plate is arranged in the accommodating cavity. The two side surfaces of the flow guide plate are connected to the inner wall of the accommodating cavity corresponding to the bottom of the air holes; the accommodating cavity above the flow guide plate is communicated with the air flow chamber.

8. The hydraulic double-direction plug door for bin separation of raw coal bunker according to claim 1, wherein: An annular mounting seat is arranged on the gantry of the blanking hole.

9. The hydraulic double-direction plug gate for bin separation of raw coal bunker according to claim 1, wherein: Accommodating grooves are arranged on both sides of the partition. When the blanking hole is in a sealed state, the sealing plate is located in the accommodating groove.

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