Eccentric fireproof mechanism applicable to biomass boiler feeder

Abstract

The utility model discloses an eccentric fireproof mechanism suitable for a biomass boiler feeder, which comprises a bin body, a movable baffle assembly, an impeller material shifting assembly and a driving assembly, the bin body is arranged between a feeding conveyor and a boiler, the upper end of the bin body is in butt joint with a discharge port of the feeding conveyor, and the impeller material shifting assembly comprises a main shaft rotationally arranged in the bin body. The movable baffle assembly comprises a baffle rotating shaft rotationally arranged in the bin body, an arc-shaped baffle fixedly connected with the baffle rotating shaft, a connecting rod with one end fixed to the back face of the arc-shaped baffle and a balancing weight hung at the other end of the connecting rod. The balancing weight drives the lower end of the arc-shaped baffle on the baffle rotating shaft to abut against the outer edge face of the impeller rotor. Elastic sealing is achieved between the arc-shaped baffles and the impeller blades, materials are not prone to being clamped, and work is reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of feeders, in particular to an eccentric fire prevention mechanism suitable for a biomass boiler feeder. Background Art

[0002] At present, belt conveyors or screw conveyors are generally used as feeding devices for biomass and solid waste incineration. In the prior art, the sealing effect between the biomass material conveyor and the boiler is poor, which easily causes the furnace flue gas to flash back to the silo. Some sealing mechanisms are large in size and inconvenient to arrange in front of the furnace. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide an eccentric fire prevention mechanism suitable for a biomass boiler feeder. The elastic seal between the arc baffle and the impeller blade is not easy to jam the material and the operation is reliable. The gap between the impeller and the arc baffle is small, and the air leakage is small, which can prevent the furnace smoke from backfired to the silo. The feeding amount is large, the equipment volume is small, and the space occupied is small, which is convenient for arrangement in front of the furnace.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: an eccentric fire prevention mechanism suitable for a biomass boiler feeder, installed between a feeding conveyor and a boiler, comprising: a bin body whose upper end is connected to a material outlet of the feeding conveyor, a movable baffle assembly, an impeller material-pickling assembly arranged in the bin body, and a driving assembly arranged outside the bin body for driving the impeller material-pickling assembly to rotate, wherein the impeller material-pickling assembly comprises a main shaft rotatably arranged in the bin body, an impeller rotor is sleeved on the main shaft, the movable baffle assembly comprises a baffle rotating shaft rotatably arranged in the bin body, an arc-shaped baffle fixedly connected to the baffle rotating shaft, a connecting rod with one end fixed to the back side of the arc-shaped baffle, and a counterweight block hung at the other end of the connecting rod, wherein the counterweight block drives the lower end of the arc-shaped baffle on the baffle rotating shaft to abut against the outer edge surface of the impeller rotor.

[0005] In a preferred embodiment of the present invention, both ends of the main shaft are rotatably connected to the warehouse body through bearings.

[0006] In a preferred embodiment of the utility model, the driving assembly includes a driving motor, a reducer and a transmission belt. The power output end of the driving motor is connected to the reducer through a transmission chain, and the power output end of the reducer is connected to one end of the main shaft through a transmission belt.

[0007] In a preferred embodiment of the present invention, 5-7 groups of impeller blades are arranged in the impeller rotor.

[0008] In a preferred embodiment of the present invention, a bearing seat is provided on the side of the silo, and both ends of the baffle shaft are rotatably connected to the bearing seat respectively.

[0009] In a preferred embodiment of the utility model, the two ends of the baffle shaft pass through the bearing seat and are respectively connected to one end of the connecting rod, and the other ends of the two groups of connecting rods are hung with counterweight blocks.

[0010] In a preferred embodiment of the present invention, the arc-shaped baffle is fixedly connected to the baffle rotating shaft by a plurality of bolts.

[0011] The utility model has the following beneficial effects: elastic sealing between the arc baffle and the impeller blade, which is not easy to get stuck and has reliable operation; the gap between the impeller and the arc baffle is small, and the air leakage is small, which can prevent the furnace smoke from backfired to the silo; the feeding amount is large, the equipment volume is small, and the space occupied is small, which is convenient for the arrangement in front of the furnace; the lower end face of the arc baffle is pressed on the outer edge end face of the impeller rotor by a counterweight, and there is a very small gap; when there is material jamming, the arc baffle will automatically open due to the action of gravity; when working, the impeller rotor rotates continuously, and the material enters from the upper part of the impeller rotor, and then is brought to the lower part by the rotating impeller rotor and falls into the boiler, so that the material energy can pass through continuously, and the smoke in the boiler is cut off, preventing a large amount of smoke from pouring into the silo. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0013] Figure 1 It is a schematic diagram of an eccentric fire prevention mechanism applicable to a biomass boiler feeder of the utility model;

[0014] Figure 2 It is a side view of an eccentric fire prevention mechanism applicable to a biomass boiler feeder of the utility model;

[0015] Figure 3 It is a schematic diagram of the movable baffle assembly in the utility model;

[0016] Figure 4 It is a side view of the movable baffle assembly in the utility model;

[0017] Figure 5 It is a schematic diagram of the utility model installed between the feeding conveyor and the boiler. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-5 The utility model discloses an eccentric fire prevention mechanism suitable for a biomass boiler feeder, which is installed between a feeding conveyor 15 and a boiler 16 and is used to prevent furnace smoke from backfired into a silo. The eccentric fire prevention mechanism comprises a silo body 1, a movable baffle assembly, an impeller material-pickup assembly arranged in the silo body, and a driving assembly arranged outside the silo body for driving the impeller material-pickup assembly to rotate, wherein the upper end of the silo body is connected to the discharge port of the feeding conveyor, and the lower end of the silo body is connected to the feed port of the boiler. The impeller material-pickup assembly comprises a main shaft 2 rotatably arranged in the silo body, an impeller rotor 3 is sleeved on the main shaft, and 5-7 groups of impeller blades are arranged in the impeller rotor, preferably 6 groups, and both ends of the main shaft are rotatably connected to the silo body through bearings. Specifically, the movable baffle assembly comprises a baffle rotatably arranged in the silo body. The plate shaft 4, the arc-shaped baffle 5 fixedly connected to the baffle shaft, the connecting rod 6 fixed to the back of the arc-shaped baffle at one end and the counterweight 7 hung at the other end of the connecting rod. The arc-shaped baffle is fixedly connected to the baffle shaft by a number of bolts 8. The connection position is approximately in the middle and upper part of the arc-shaped baffle. The arc-shaped baffle approaches the impeller rotor from top to bottom. When working, the lower end face of the arc-shaped baffle is pressed against the outer edge end face of the impeller rotor through the counterweight, and there is a very small gap. When there is material jam, the arc-shaped baffle will automatically open due to gravity. When working, the impeller rotor rotates continuously, and the material enters from the upper part of the impeller rotor, and then is brought to the lower part by the rotating impeller rotor and falls into the boiler, so that the material energy can pass through continuously, and the smoke in the boiler is cut off to prevent a large amount of smoke from pouring into the silo.

[0020] Specifically, the driving assembly includes a driving motor 9, a reducer 10 and a transmission belt 11. The power output end of the driving motor is connected to the reducer through a transmission chain 12, and the power output end of the reducer is connected to one end of the main shaft through a transmission belt.

[0021] Specifically, a bearing seat 13 is provided on the side of the silo, and both ends of the baffle shaft are rotatably connected to the bearing seats respectively. The two ends of the baffle shaft pass through the bearing seats and are respectively connected to one end of the connecting rod. The other ends of the two sets of connecting rods are hung with counterweights, and the weight of the counterweights can be adjusted as needed. An observation window 14 is also provided on the side of the silo body to facilitate observation of the working conditions inside the silo body.

[0022] The utility model discloses an eccentric fireproof mechanism suitable for a biomass boiler feeder, which has the following beneficial effects: an elastic seal between the arc baffle and the impeller blade, which is not easy to get stuck and can work reliably; a small gap between the impeller and the arc baffle, small air leakage, and can prevent furnace smoke from backfired to the silo; a large feeding amount, a small equipment volume, and small occupied space, which is convenient for arrangement in front of the furnace; a lower end face of the arc baffle is pressed on the outer edge end face of the impeller rotor by a counterweight, and there is a very small gap; when there is material stuck, the arc baffle will automatically open due to gravity; during operation, the impeller rotor rotates continuously, and materials enter from the upper part of the impeller rotor, and then are brought to the lower part by the rotating impeller rotor and fall into the boiler, so that materials can pass through continuously, and the smoke in the boiler is cut off, preventing a large amount of smoke from pouring into the silo.

[0023] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An eccentric fire protection mechanism suitable for a biomass boiler feeder, installed between the feeder conveyor and the boiler, characterized in that: include: A bin body whose upper end is connected to the discharge port of the feeding conveyor, a movable baffle assembly, an impeller material-discharging assembly arranged in the bin body, and a driving assembly arranged outside the bin body for driving the impeller material-discharging assembly to rotate, wherein the impeller material-discharging assembly includes a main shaft rotatably arranged in the bin body, an impeller rotor is sleeved on the main shaft, and the movable baffle assembly includes a baffle rotating shaft rotatably arranged in the bin body, an arc-shaped baffle fixedly connected to the baffle rotating shaft, a connecting rod with one end fixed to the back side of the arc-shaped baffle and a counterweight block hung on the other end of the connecting rod, and the counterweight block drives the lower end of the arc-shaped baffle on the baffle rotating shaft to abut against the outer edge surface of the impeller rotor.

2. The eccentric fire protection mechanism applicable to the biomass boiler feeder according to claim 1 is characterized in that: The two ends of the main shaft are rotatably connected to the warehouse body through bearings.

3. The eccentric fire protection mechanism applicable to a biomass boiler feeder according to claim 1 is characterized in that: The driving assembly includes a driving motor, a speed reducer and a transmission belt. The power output end of the driving motor is transmission-connected to the speed reducer through a transmission chain, and the power output end of the speed reducer is transmission-connected to one end of the main shaft through a transmission belt.

4. The eccentric fire protection mechanism applicable to a biomass boiler feeder according to claim 1, characterized in that: The impeller rotor is provided with 5 to 7 groups of impeller blades.

5. The eccentric fire protection mechanism applicable to a biomass boiler feeder according to claim 1, characterized in that: A bearing seat is arranged on the side of the warehouse body, and both ends of the baffle rotating shaft are rotatably connected to the bearing seat respectively.

6. An eccentric fire protection mechanism suitable for a biomass boiler feeder according to claim 5, characterized in that: The two ends of the baffle rotating shaft pass through the bearing seat and are respectively connected to one end of the connecting rod, and the other ends of the two groups of connecting rods are hung with counterweight blocks.

7. The eccentric fire protection mechanism applicable to a biomass boiler feeder according to claim 1, characterized in that: The arc-shaped baffle is fixedly connected to the baffle rotating shaft through a plurality of bolts.

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