CN213019596U

CN213019596U - Chain grate deironing structure and chain furnace

Info

Publication number: CN213019596U
Application number: CN202021800490.0U
Authority: CN
Inventors: 张晓�; 孙希望; 王吉生; 孙磊
Original assignee: Jinan Weiquan Bio Power Co ltd
Current assignee: Jinan Weiquan Bio Power Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-04-20
Anticipated expiration: 2030-08-24

Abstract

The application relates to the field of chain furnace maintenance, and particularly provides a chain grate deironing structure and a chain furnace. The chain grate deironing structure comprises a clutch type transmission gear set connected with a driven wheel of the chain grate, and a main shaft of a rapping deironing mechanism synchronously rotating with the driven wheel through a clutch type traditional gear set, wherein a plurality of sections of rapping hammers are fixedly connected to the main shaft of the rapping deironing mechanism, and hammer handles of the plurality of sections of rapping hammers are of a multi-section structure in movable connection. Solves the problem that the ironware is easy to be blocked in the chain grate and damages the chain grate when the fuel containing the ironware is adopted in the prior art.

Description

Chain grate deironing structure and chain furnace

Technical Field

The application relates to the field of chain furnace maintenance, and particularly provides a chain grate deironing structure and a chain furnace.

Background

The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

In the prior art, in the production process of a biomass power plant, biomass fuel is combusted in a boiler, and the combustion and movement modes of the biomass fuel in the boiler are different according to different types of the boiler. The common reciprocating grate and the chain grate of the biomass boiler form a combined grate together, biomass fuel enters the boiler from a furnace feeding bin, reaches the reciprocating grate, is pushed forward along with the reciprocating movement of the reciprocating grate, is conveyed to the chain grate through the reciprocating grate, and then is ignited, combusted and burned to a burning-out area at the tail end of the chain, so that the biomass fuel is fully combusted. Therefore, the traveling grate is the main combustion control device of the biomass reciprocating boiler, not only controls the combustion rate of the fuel, but also controls the distribution of the combustion area of the hearth, and is more responsible for whether the fuel can be fully combusted.

The biomass fuel can realize stable combustion only by reasonably blending different types, including plate, ash stalk, yellow stalk and the like, wherein the plate fuel mainly comes from building templates, waste furniture, waste packing cases, waste trays and the like, and although the plate fuel has higher heat value, the inventor finds that the fuel contains more metal impurities, including iron nails, stainless steel hinges, door locks, aluminum edgings and the like, if an iron remover does not completely remove the impurities, the impurities can be conveyed into a hearth along with the fuel for combustion, after entering a chain grate, due to the rotary structure of the chain grate, a certain gap is formed between two grate pieces, and metal foreign matters can cause the grate pieces to be jammed, so that the grate pieces fall off, a chain mechanism is damaged, and a furnace shutdown accident can be caused if the chain mechanism is serious,

SUMMERY OF THE UTILITY MODEL

Aiming at the problem that the chain furnace is damaged because the ironware is easy to be clamped in the chain furnace row when fuel containing the ironware is adopted in the prior art.

In one or some embodiments of the present disclosure, a traveling grate deironing structure is provided, including a clutch type transmission gear set connected to a driven wheel of the traveling grate, and a rapping deironing mechanism main shaft rotating synchronously with the driven wheel through a clutch type traditional gear set, wherein a plurality of sections of rapping hammers are fixedly connected to the rapping deironing mechanism main shaft, and hammer handles of the plurality of sections of rapping hammers are of a multi-section structure in a movable connection.

In one or some embodiments of the present disclosure, a stoker furnace is provided, which includes the above-mentioned stoker iron removal structure.

One of the above technical solutions has the following advantages or beneficial effects:

1) this is disclosed to the chain boiler who adopts the traveling grate as interior fuel transport of furnace and burning platform, through adding initiative deironing structure, guarantees the holding capacity of traveling grate to fuel debris, in time clears away the physique debris that adheres to on the traveling grate and press from both sides between the gap, prevents that it from causing the grate segment jam because of the metallic foreign matter, prevents that the grate segment from droing, guarantees boiler operation condition.

2) The clutch type transmission gear set is mounted on the driven wheel, the driven wheel serves as a power source, extra power support is avoided being provided, the driven wheel serves as the power source, the main shaft of the rapping iron removal mechanism and the multiple sections of rapping hammers fixedly connected with the main shaft vibrate along with the driven wheel through the clutch type transmission gear set, the rapping speed and intensity of the rapping hammers change along with the rotation speed of the driven wheel, namely when the driven wheel rotates fast, the rapping speed of the rapping hammers becomes fast, the rapping intensity is improved, and otherwise, the driving force is opposite. And the clutch type transmission gear set is simple, and the chain furnace in the prior art is easily modified.

3) This is disclosed through shaking inside the chain grate chain mechanism, will press from both sides between the chain grate stoker piece and the foreign matter attached to the chain grate stoker piece shakes and falls, for guaranteeing the joint strength of chain grate stoker chain and chain grate stoker piece, the non-long-term operation of shaking mechanism, only utilizes separation and reunion formula drive gear group to open when personnel's tour discovery is unusual, treats to eliminate and recycles separation and reunion formula drive gear group after unusual and closes to accomplish active deironing and the long period running of chain grate stoker.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the disclosure and, together with the description, serve to explain the disclosure and not to limit the disclosure.

Fig. 1 is a schematic structural view of a conveyor oven according to embodiment 1 of the present disclosure.

Wherein: 1, a hearth wall; 2, a driven wheel; 3, a chain; 4, fire grate segments; 5, a side baffle plate; 6 clutch type transmission gear set; 7 rapping a main shaft of the iron removing mechanism; 8. three-section rapping hammer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

The chain furnace is a reciprocating grate type chain furnace.

The multi-section rapping hammer can be welded to the main shaft of the rapping iron removal mechanism and rotates along the tangential direction of the main shaft of the rapping iron removal mechanism. The design of the multi-section rapping hammer takes the steric hindrance in the chain grate into consideration, namely if the multi-section rapping hammer is set as a single-section rapping hammer, the length of the single-section rapping hammer is enough to enable the single-section rapping hammer to be capable of rapping the grate, but the single-section rapping hammer is too long to cause the single-section rapping hammer to be blocked and incapable of rotating, and the grate can be damaged. And the multi-section rapping hammer rotates along with the gear in the clockwise direction, the multi-section rapping hammer is continuously opened and contracted, rapping is realized when the multi-section rapping hammer is opened, and the blockage caused by steric hindrance is avoided.

Preferably, the movable connection mode can be a hinge joint.

Preferably, the clutch type gear set comprises a clutch connected with the driven wheel and a gear connected with the clutch. The clutch control gear is connected or disconnected with the driven wheel, and the clutch control gear is disconnected after the fuel without an ironware or the fuel containing the ironware is adopted to run for a period of time, so that the active iron removal and the long-period running of the chain grate are realized.

Preferably, the rapping hammer is an iron hammer, and the chain grate segments are mostly iron and are made of the same material, so that the chain grate segments are not easy to damage each other.

Preferably, the multi-section rapping hammer is a three-section rapping hammer. If the number of the joints is too large, the long-time operation is easy to damage, and if the number of the joints of the rapping hammer is too small, the effect of avoiding steric hindrance cannot be achieved, so that a three-section rapping hammer is selected.

Preferably, two multi-section rapping hammers are arranged on driven wheels which are positioned on two sides of the chain grate respectively.

Preferably, the fire grate of the chain furnace is approximately rectangular with two arc-shaped sides, and the arc-shaped fire grate is upright relative to the ground. Because the chains at the arc positions on the two sides are separated from the chains to form gaps, iron devices are most easily mixed between the gaps of the fire grates of the type.

Preferably, the stoker further comprises a side baffle plate, and the side baffle plate supports the stoker. The side baffles are positioned on two sides of the chain grate and play a role in auxiliary support for the chain grate, so that insufficient support of a driven wheel is avoided

Preferably, the total length of the multi-section rapping hammer is greater than the distance from the clutch gear set to the bottom traveling grate.

Preferably, the length of each section of the multi-section rapping hammer is smaller than the shortest distance from the clutch gear set to the chain grate. Can better avoid steric hindrance

Preferably, the driven wheels are close to two sides of the chain conveyor furnace.

Example 1

As shown in fig. 1, the present embodiment provides a chain grate furnace, which includes a chain grate 3, where the chain grate 3 is an approximately rectangular structure with two arc-shaped sides, and the arc-shaped grate is relatively upright with respect to the ground. In the actual operation process, when the traveling grate 3 rotates to the arc, the grate segments 4 are not tightly connected with the grate segments 4 any more, and because the space geometry changes to generate gaps, and the temperature in the traveling grate furnace is higher, ironware and the like are clamped into the gaps and rotate along with the grate segments 4 in the clockwise direction.

Two driving wheels (not shown in the figure) are arranged on two sides of the chain grate 3, a plurality of driven wheels 2 are arranged between the two driving wheels, clutch type transmission gear sets 6 are arranged on the two driven wheels 2 close to the driving wheels, the clutch type transmission gear sets 6 are in clutch connection with the driven wheels 2 and can synchronously rotate with the driven wheels 2, and when plate type fuel containing ironware is not used, the clutch type transmission gear sets 6 are separated from the driven wheels 2 to stop rotating. The clutch type transmission gear set 6 is powered by the driven wheel 2, and transmission can be realized without additional power.

The clutch type gear set comprises a clutch connected with the driven wheel 2 and a gear connected with the clutch, the main shaft 7 of the rapping iron removing mechanism is fixedly connected with three sections of rapping hammers 8, each three section of rapping hammer 8 consists of three sections of connecting rods which are movably connected, and the end of the connecting rod at the tail end is provided with the rapping hammer.

The three-section rapping hammer 8 is two and is respectively positioned on two driven wheels 2 close to two sides, and as seen from a graph 1, because the chain grate 3 rotates clockwise, the three-section rapping hammer 8 positioned on the right side raps the lower part of the arc-shaped grate and is used for rapping the ironware in the gap of the grate segment 4, part of the ironware shakes off from the chain grate 3 and falls into the wall of a hearth, and part of the ironware shakes on the surface of the grate segment 4 from the gap and continues to move along with the grate segment 4, and the ironware positioned on the surface of the grate segment 4 is shaken off by the three-section rapping hammer 8 positioned on the left side, so that the ironware is thoroughly removed from the grate segment 4.

The three-section rapping hammer 8 takes the steric hindrance in the chain grate into consideration, that is, if a single-section rapping hammer is arranged, the length of the single-section rapping hammer is enough to enable the single-section rapping hammer to be capable of rapping the grate below, but the single-section rapping hammer is too long, so that the single-section rapping hammer is clamped at the upper part and cannot rotate, and the grate is damaged. And the three-section rapping hammer 8 rotates along with the gear, when rotating to the lower side, the three-section rapping hammer 8 is completely opened to realize rapping, and when rotating to the upper side, the three-section rapping hammer is rolled up to avoid the steric hindrance from being blocked.

In order to better avoid steric hindrance, the total length of the three-section rapping hammer 8 is larger than the distance from the clutch gear set to the bottom traveling grate stoker. And the length of each section of the three-section rapping hammer 8 is less than the shortest distance from the clutch type gear set to the chain grate.

The chain grate is supported by the side baffle plates 5, the side baffle plates 5 are positioned on two sides of the chain grate 3, the chain grate 3 is supported in an auxiliary mode, and insufficient support of the driven wheel 2 is avoided.

Example 2

This embodiment provides the operation method of chain furnace described in embodiment 1, butt-joint clutch type transmission gear set 6 with driven wheel 2, open chain furnace, drop into the panel class fuel that contains ironware into chain furnace, chain grate 3 clockwise rotation's in-process, ironware card is gone into in the gap of fire grate segment 4 and fire grate segment 4, when fire grate segment 4 moves to the three-section rapping hammer 8 below, three-section rapping hammer 8 shakes and beats fire grate segment 4 or its gap department, shakes the ironware in fire grate segment 4 and falls, falls in chain furnace, collects after finishing burning.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims

1. The chain grate deironing structure is characterized by comprising a clutch type transmission gear set connected with a driven wheel of the chain grate, and a rapping deironing mechanism main shaft synchronously rotating with the driven wheel through a clutch type traditional gear set, wherein a plurality of sections of rapping hammers are fixedly connected to the rapping deironing mechanism main shaft, and hammer handles of the plurality of sections of rapping hammers are of a multi-section structure in a movable connection manner.

2. The traveling grate deironing structure of claim 1, wherein said clutch-type transmission gear set includes a clutch connected to a driven wheel, and a gear connected to the clutch.

3. The structure of claim 2, wherein the plurality of sections of rapping hammers are welded to a main shaft of a rapping iron removal mechanism.

4. The iron removing structure for the chain grate stoker of claim 1, wherein the multi-section rapping hammer is a three-section rapping hammer.

5. A stoker furnace, characterized in that it comprises a stoker de-ironing structure according to any one of claims 1 to 4.

6. The chain grate furnace of claim 5 wherein the grate of the chain grate furnace is approximately rectangular with two sides being arc-shaped, and the arc-shaped grate is upright opposite to the ground.

7. The stoker of claim 6 further comprising side dams supporting the stoker.

8. The stoker of claim 5 wherein the overall length of the multi-section rapping hammer is greater than the distance from the clutch-drive gear set to the bottom traveling grate.

9. The stoker of claim 5 wherein the length of each section of the multi-section rapping hammer is less than the shortest distance from the clutch-type drive gear set to the stoker of the chain grate.

10. The conveyor oven of claim 5, wherein said driven wheels are located adjacent to both sides of the conveyor oven.