Coal feeder for thermal power plant

Abstract

The utility model belongs to the field of thermoelectric equipment, and particularly relates to a coal feeder for a thermal power plant, which comprises a bidirectional through coal feeding channel, a transmission mechanism comprises a transmission table arranged in the coal feeding channel, one side of the transmission table is provided with a transmission motor, the output end of the transmission motor is connected with a roll shaft penetrating through the transmission table, and the roll shaft is connected with a transmission mechanism. The roller shafts are sleeved with a conveying belt. The coal storage mechanism comprises a coal bunker frame installed on the upper portion of the coal feeding channel, a coal storage bunker is clamped in the coal bunker frame, and a coal weighing platform is installed at the bottom of the coal storage bunker. Coal is weighed and quantitatively discharged at a coal weighing platform at the bottom of the coal storage bunker, the coal is poured to a conveying belt of a conveying platform, a feeding port of a boiler is exposed through operation of a gate mechanism, at the moment, an air supply mechanism works, and air blown by a fan acts on the coal at the tail end of the conveying belt through an air supply barrel; and the coal quickly enters the inner cavity of the boiler under the pushing of the conveying belt and the blowing of air, so that the coal is prevented from leaking, and the utilization efficiency of the coal is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of thermal power equipment, concretely relates to a coal feeder for thermal power plant. BACKGROUND

[0002] Thermal power plant is the facility that carries out power generation and heat supply simultaneously, and is the important source of city and industrial electricity. Thermal power plant mainly includes boiler system, turbine generator unit, flue gas purification system and heat network system etc. Its main function is to produce steam through burning fuel, drive turbine generator unit to generate electricity, and utilize steam to heat supply at the same time. Coal feeding plays a vital role in thermal power plant, and ensures the stability of coal quantity, can improve the combustion efficiency and economy.

[0003] The coal feeder of thermal power plant needs to automatically control the flow and proportion of coal powder when in use, so that the coal materials of each batch can enter the coal feeder uniformly. In the conveying process, part of the coal materials will leak due to the fact that the transmission belt is not placed into the furnace cavity, and there is a deficiency. UTILITY MODEL CONTENT

[0004] (I) UTILITY MODEL OBJECTIVE

[0005] In order to solve the technical problems in the background art, the utility model provides a coal feeder for thermal power plant, which has the characteristics of smooth coal feeding and coal conveying leak prevention.

[0006] (II) TECHNICAL SCHEME

[0007] In order to solve the above technical problems, the utility model provides a coal feeder for thermal power plant, which comprises a coal feeding channel,

[0008] The transmission mechanism comprises a transmission table arranged in the coal feeding channel, one side of the transmission table is provided with a transmission motor, the output end of the transmission motor is connected with a roller shaft penetrating through the transmission table, and the outer part of the roller shaft is provided with a transmission belt;

[0009] The coal storage mechanism comprises a coal bunker frame installed on the upper part of the coal feeding channel, the coal bunker frame clamps a coal storage bunker, the bottom of the coal storage bunker is provided with a coal weighing table, and the opening end of the coal weighing table is provided with a rotatable flap;

[0010] The gate mechanism comprises a vertical rail symmetrically installed on one side of the coal feeding channel, the top of the vertical rail is provided with a gantry, the middle part of the gantry is provided with a traction device, the output end of the traction device is connected with a gate rod penetrating through the gantry, and the other end of the gate rod is connected with a gate;

[0011] The air supply mechanism comprises a fan arranged in the coal feeding channel, and the end face of the fan towards the opening of the coal feeding channel is provided with an air supply cylinder.

[0012] Preferably, the rear section of the conveying table is located inside the coal feeding channel, and the front section is located below the coal weighing table.

[0013] Preferably, the flap is controlled to rotate by the overturning shaft of the coal weighing table.

[0014] Preferably, the gate is attached to the end opening of the coal feeding channel.

[0015] Preferably, the gate is linearly displaced in the up-down direction along the vertical rail.

[0016] Preferably, the fan is installed at the inner top end of the coal feeding channel through a fan frame, and the bottom of the fan frame is inclined.

[0017] The above technical solution of the utility model has the following beneficial technical effects: coal is weighed and quantitatively discharged at the coal weighing table at the bottom of the coal storage bin, the coal is poured at the conveying belt of the conveying table, the feeding opening of the boiler is exposed through the gate mechanism, at this time, the air supply mechanism works, the air swept by the fan acts on the coal at the end of the conveying belt, the coal quickly enters the inner cavity of the boiler under the pushing of the conveying belt and the sweeping of the air, coal leakage is prevented, and the utilization efficiency of coal is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 Fig. 1 is a structural schematic diagram of the utility model;

[0019] Fig. 2 Fig. 2 is a side view structural schematic diagram of the utility model;

[0020] Fig. 3 Fig. 3 is a structural schematic diagram of the air supply mechanism of the utility model.

[0021] REFERENCE SIGNS:

[0022] 1, coal feeding channel; 21, conveying table; 22, conveying motor; 23, roller shaft; 24, conveying belt; 31, coal bin frame; 32, coal storage bin; 33, coal weighing table; 34, flap; 41, vertical rail; 42, gantry frame; 43, traction device; 44, gate rod; 45, gate; 51, fan frame; 52, fan; 53, air supply cylinder. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model more clear and explicit, the utility model is further described in detail below in combination with specific implementation manners and with reference to the drawings. It should be understood that these descriptions are only exemplary, and are not intended to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0024] As Figs. 1-3The utility model provides a coal feeder for thermal power plant, including two -way through's coal feeder channel 1,

[0025] The transmission mechanism includes a transmission table 21 arranged in the coal feeder channel 1, one side of the transmission table 21 is provided with a transmission motor 22, the output end of the transmission motor 22 is connected with a roller shaft 23 penetrating the transmission table 21, the roller shaft 23 is externally sleeved with a transmission belt 24;

[0026] The coal storage mechanism includes a coal bunker frame 31 installed on the upper part of the coal feeder channel 1, the coal bunker frame 31 clamps a coal storage bin 32, the bottom of the coal storage bin 32 is installed with a coal weighing table 33, and the opening end of the coal weighing table 33 is installed with a rotatable flap 34;

[0027] The gate mechanism includes a vertical rail 41 symmetrically installed on one side of the coal feeder channel 1, a gantry 42 is installed on the top of the vertical rail 41, a traction device 43 is installed in the middle of the gantry 42, the output end of the traction device 43 is connected with a gate rod 44 penetrating the gantry 42, and the other end of the gate rod 44 is connected with a gate 45;

[0028] The air supply mechanism includes a fan 52 arranged in the coal feeder channel 1, and the fan 52 is installed with an air supply cylinder 53 towards the end face of the opening of the coal feeder channel 1.

[0029] It should be noted that the rear section of the transmission table 21 is located inside the coal feeder channel 1, and the gate mechanism is arranged close to the boiler inlet; the front section is located below the coal weighing table 33, and the coal material weighed by the coal weighing table 33 directly falls into the front section of the transmission table 21.

[0030] In the embodiment, the coal material is weighed and quantitatively discharged at the coal weighing table 33 at the bottom of the coal storage bin 32, the flap 34 is controlled to rotate on the coal weighing table 33 to dump the coal material at the transmission belt 24 of the transmission table 21, the transmission motor 22 drives the roller shaft 23 to rotate to drive the transmission belt 24 to move to the end of the coal feeder channel 1;

[0031] The gate mechanism works, the gate 45 is attached to the end opening of the coal feeder channel 1, the gate mechanism drives the gate 45 to displace upward to open the gate, and the feeding port of the boiler is exposed; at this time, the air supply mechanism works, the air blown by the fan 52 acts on the coal material at the end of the transmission belt 24 through the air supply cylinder 55, and the coal material quickly enters the inner cavity of the boiler under the pushing of the transmission belt 24 and the blowing of the air, so that the coal material is prevented from leaking into the boiler, and the utilization efficiency of the coal material is improved.

[0032] It can be understood that the output end of the traction device 43 is connected with the gate rod 44 penetrating the gantry 42, the gate rod 44 is controlled to drive the gate 45 to move, the gate 45 makes linear displacement in the upward and downward directions along the vertical rail 41, and the size adjustment of the opening of the boiler feeding end is assisted.

[0033] To further increase the direction of coal feeding, the fan 52 is installed at the top of the inside of the coal feeding channel 1 via the fan frame 51, and the bottom of the fan frame 51 is an inclined structure.

[0034] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A coal feeder for a thermal power plant, characterized in that, Including a two-way through coal feeding channel (1), The transmission mechanism includes a transmission platform (21) installed in the coal feeding channel (1), a transmission motor (22) is installed on one side of the transmission platform (21), the output end of the transmission motor (22) is connected to a roller (23) that passes through the transmission platform (21), and a transmission belt (24) is sleeved on the outside of the roller (23). The coal storage mechanism includes a coal bunker frame (31) installed on the upper part of the coal feeding channel (1), a coal storage bunker (32) is held in the coal bunker frame (31), a coal weighing platform (33) is installed at the bottom of the coal storage bunker (32), and a rotatable flap (34) is installed at the open end of the coal weighing platform (33). The gate mechanism includes vertical rails (41) symmetrically installed on one side of the coal feeding channel (1), a gantry frame (42) is installed on the top of the vertical rails (41), a traction device (43) is installed in the middle of the gantry frame (42), the output end of the traction device (43) is connected to a gate rod (44) that passes through the gantry frame (42), and the other end of the gate rod (44) is connected to a gate (45); The air supply mechanism includes a fan (52) installed in the coal feeding channel (1), and an air supply duct (53) is installed on the end face of the fan (52) facing the opening of the coal feeding channel (1).

2. A coal feeder for a thermal power plant according to claim 1, characterized in that, The rear section of the transmission platform (21) is located inside the coal feeding channel (1), and the front section is located below the coal weighing platform (33).

3. A coal feeder for a thermal power plant according to claim 1, characterized in that, The flap (34) is controlled by the rotation of the flipping shaft on the coal weighing platform (33).

4. A coal feeder for a thermal power plant according to claim 1, characterized in that, The gate (45) is attached to the end opening of the coal feeding channel (1).

5. A coal feeder for a thermal power plant according to claim 1, characterized in that, The gate (45) moves in a straight line up and down along the vertical rail (41).

6. A coal feeder for a thermal power plant according to claim 1, characterized in that, The fan (52) is installed at the top of the inside of the coal feeding channel (1) via a fan frame (51), and the bottom of the fan frame (51) is an inclined structure.

Images