Coal feeder outlet flap door

Abstract

The utility model discloses a coal feeder outlet flap door, including door frame, door seat, door leaf subassembly, lower shaft three piece suit, cylinder support, cylinder, cylinder, cylinder fork, cylinder fork pin, connecting rod arm, shaft sleeve, bearing, packing seat and packing, be equipped with door seat on the door frame, be equipped with door leaf subassembly in the door frame, be equipped with lower shaft three piece suit in the door leaf subassembly, be equipped with cylinder on the cylinder support, be equipped with cylinder fork on the cylinder, cylinder fork and cylinder fork pin are connected, cylinder fork is connected with connecting rod arm through cylinder fork pin, be equipped with shaft sleeve on connecting rod arm, connecting rod arm is connected with bearing through shaft sleeve, bearing is connected with packing seat, be equipped with packing in packing seat, packing is wrapped lower shaft three piece suit. Adopt the technical scheme to make a kind of coal feeder outlet flap door, adopt flap door structure form, when coal feeder outlet flap door opening, door leaf is completely placed below door seat, coal falling down by coal feeder belt does not contact door leaf completely, also will not cause door leaf jam and deformation for long-term use.

Description

Technical Field

[0001] This utility model relates to the field of coal feeders, and in particular to a coal feeder outlet flap gate. Background Technology

[0002] The coal feeder outlet gate is specifically used to isolate the coal drop pipe at the outlet of the coal feeder in a thermal power generating unit boiler. When the boiler is running, all isolation gates on the coal feeder inlet and outlet must be opened to ensure an appropriate amount of coal enters the furnace smoothly to meet the boiler's combustion needs. When the coal feeder stops running or malfunctions, the coal feeder inlet and outlet gates must be closed to allow maintenance personnel to perform repairs.

[0003] The dampers used at the outlet of coal feeders on the market are basically slide gates, with the gate plates driven by gears and racks or roller tracks. Due to the working environment, dust easily accumulates in the gears and racks or roller tracks, causing jamming. Coal piles up at the rear end of the valve body, resulting in the gate plates not closing tightly or not opening at all, affecting coal conveying and causing great inconvenience to maintenance and repair work.

[0004] Therefore, a convenient and effective coal feeder outlet flap gate is needed. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a convenient and effective coal feeder outlet flap gate.

[0006] This utility model discloses a coal feeder outlet flap door, comprising a door frame, a door seat, a door panel assembly, a lower shaft three-piece set, a cylinder bracket, a cylinder, a cylinder shift fork, a cylinder shift fork pin, a connecting rod arm, a bushing, a bearing, a packing seat, and packing. The door frame is provided with a door seat, the door panel assembly is provided inside the door frame, and the lower shaft three-piece set is provided inside the door panel assembly. The cylinder bracket is equipped with a cylinder, and the cylinder is equipped with a cylinder shift fork. The cylinder shift fork is connected to a cylinder shift fork pin. The cylinder shift fork is connected to a connecting rod arm through the cylinder shift fork pin. The connecting rod arm is equipped with a bushing. The connecting rod arm is connected to a bearing through the bushing. The bearing is connected to a packing seat. The packing seat is equipped with packing. The packing wraps around the lower shaft three-piece set.

[0007] In the above solution, a sealing pressure plate is provided on the door seat, and a sealing strip is provided between the door seat and the sealing pressure plate. When the door panel assembly is closed, the door panel assembly contacts the sealing strip.

[0008] In the above scheme, the cylinder bracket is connected to the cylinder via a cylinder tail pin.

[0009] In the above scheme, the bushing is fitted onto the door panel assembly.

[0010] In the above scheme, the cylinder pushes the connecting rod arm to rotate through the cylinder fork, and the rotation of the connecting rod arm drives the bushing to rotate.

[0011] In the above solution, the lower shaft three-piece set includes a door shaft, a lower shaft end cap, and a lower shaft pressure cap, and the filler wraps around the door shaft.

[0012] The advantages and beneficial effects of this utility model are as follows: This utility model provides a convenient and effective feeder outlet flap door. Adopting a flap door structure, when the feeder outlet flap door is opened, the door panel is completely placed under the door seat, ensuring that coal falling from the feeder belt does not come into contact with the door panel. Long-term use will not cause the door panel to jam or deform. When the feeder outlet flap door is closed, the door panel achieves a good sealing effect through contact with a soft seal on the door seat. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of this utility model. Figure 3 for Figure 2 Schematic diagram of the AA-direction structure.

[0015] In the diagram: 1. Door frame; 2. Door seat; 3. Door panel assembly; 4. Lower shaft three-piece set; 5. Cylinder bracket; 6. Cylinder; 7. Cylinder shift fork; 8. Cylinder shift fork pin; 9. Connecting rod arm; 10. Bushing; 11. Bearing; 12. Packing seat; 13. Packing; 14. Sealing pressure plate; 15. Sealing strip; 16. Cylinder tail pin. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0017] like Figures 1-3As shown, this utility model is a coal feeder outlet flap door, including a door frame 1, a door seat 2, a door panel assembly 3, a lower shaft three-piece set 4, a cylinder bracket 5, a cylinder 6, a cylinder fork 7, a cylinder fork pin 8, a connecting rod arm 9, a bushing 10, a bearing 11, a packing seat 12, and packing 13. The door frame 1 is provided with a door seat 2, the door panel assembly 3 is provided inside the door frame 1, the lower shaft three-piece set 4 is provided inside the door panel assembly 3, the cylinder bracket 5 is provided with a cylinder 6, the cylinder 6 is provided with a cylinder fork 7, the cylinder fork 7 is connected to the cylinder fork pin 8, the cylinder fork 7 is connected to the connecting rod arm 9 through the cylinder fork pin 8, the connecting rod arm 9 is provided with a bushing 10, the connecting rod arm 9 is connected to the bearing 11 through the bushing 10, the bearing 11 is connected to the packing seat 12, the packing seat 12 is provided with packing 13, and the packing 13 wraps the lower shaft three-piece set 4.

[0018] A sealing plate 14 is provided on the door seat 1, and a sealing strip 15 is provided between the door seat 1 and the sealing plate 14. When the door panel assembly 3 is closed, the door panel assembly 3 contacts the sealing strip 15. The cylinder bracket 5 is connected to the cylinder 6 through the cylinder tail pin 16. The bushing 10 is fitted on the door panel assembly 3.

[0019] Cylinder 6 drives the connecting rod arm 9 to rotate via cylinder fork 7, and the rotation of connecting rod arm 9 drives the bushing 10 to rotate. The lower shaft three-piece set 4 includes the door shaft, the lower shaft end cover and the lower shaft pressure cover, and the filler 13 wraps around the door shaft.

[0020] Cylinder 6 is connected to cylinder shift fork 7 via piston rod thread. Door panel assembly 3 passes through bearing 11, through packing seat 12, and is wrapped with packing 13. Lower shaft three-piece set 4 is inserted into door panel assembly 3. Door seat 2 is welded to door frame 1. Sealing strip 15 is sandwiched between door seat 2 and sealing pressure plate 14.

[0021] The piston rod of cylinder 6 extends and retracts, which drives the connecting rod arm 9 to rotate via cylinder fork 7. The rotation of connecting rod arm 9 drives the bushing 10 to rotate, which in turn causes the door panel assembly 3 to rotate, thus realizing the door opening and closing action. The lower shaft three-piece set 4 plays a guiding role, clamping the sealing strip 15 between the door seat 2 and the sealing pressure plate 14. When the flip door is closed, the door panel assembly 3 and the sealing strip 15 come into contact.

[0022] This utility model provides a convenient and effective flap gate for the coal feeder outlet. Employing a flap gate structure, when the coal feeder outlet flap gate is open, the gate panel is completely submerged under the gate seat, ensuring that coal falling from the coal feeder belt does not come into contact with the gate panel. Long-term use will not cause the gate panel to jam or deform. When the coal feeder outlet flap gate is closed, the gate panel achieves a good sealing effect through contact with a soft seal around the gate seat.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coal feeder outlet flap gate, characterized in that, The system includes a door frame, door seat, door panel assembly, lower shaft three-piece set, cylinder bracket, cylinder, cylinder shift fork, cylinder shift fork pin, connecting rod arm, bushing, bearing, packing seat, and packing. The door frame is equipped with a door seat, the door panel assembly is located inside the door frame, and the lower shaft three-piece set is located inside the door panel assembly. The cylinder bracket is equipped with a cylinder, and the cylinder is equipped with a cylinder shift fork. The cylinder shift fork is connected to a cylinder shift fork pin. The cylinder shift fork is connected to a connecting rod arm through the cylinder shift fork pin. The connecting rod arm is equipped with a bushing. The connecting rod arm is connected to a bearing through the bushing. The bearing is connected to a packing seat. The packing seat is equipped with packing. The packing wraps around the lower shaft three-piece set.

2. The feeder outlet flap gate according to claim 1, characterized in that, The door seat is provided with a sealing pressure plate, and a sealing strip is provided between the door seat and the sealing pressure plate. When the door panel assembly is closed, the door panel assembly contacts the sealing strip.

3. The feeder outlet flap gate according to claim 2, characterized in that, The cylinder bracket is connected to the cylinder via a cylinder tail pin.

4. The feeder outlet flap gate according to claim 2, characterized in that, The bushing is fitted onto the door panel assembly.

5. The coal feeder outlet flap gate according to claim 1, characterized in that, The cylinder drives the connecting rod arm to rotate via the cylinder fork, and the rotation of the connecting rod arm drives the bushing to rotate.

6. The feeder outlet flap gate according to claim 1, characterized in that, The lower shaft three-piece set includes a door shaft, a lower shaft end cap, and a lower shaft pressure cap, with the filler wrapping the door shaft.

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