CN211798400U

CN211798400U - Spark arresting device

Info

Publication number: CN211798400U
Application number: CN202020431131.6U
Authority: CN
Inventors: 李栩; 戴锡建; 梁燕; 姚谨军
Original assignee: Guangxi Ke Sui Environmental Technology Co ltd
Current assignee: Guangxi Ke Sui Environmental Technology Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-10-30
Anticipated expiration: 2030-03-30

Abstract

The utility model discloses a back-fire relief star device, which comprises a housin, be provided with flue gas entry, exhanst gas outlet and turning device on the casing, the flue gas entry with be provided with between the exhanst gas outlet and be used for blockking the mars and have the baffle in air feed circulation space, the middle part of baffle with turning device links to each other, turning device can with the windward side upset of baffle becomes the leeward side. The utility model discloses a turning device that the setting links to each other with the baffle overturns the windward side of baffle for the leeward side, utilizes the flow of flue gas itself, blows off the deposition that lies in the leeward side on the baffle, avoids influencing the normal burning of boiler because the hole on the baffle blocks up, and the device is simple, energy saving.

Description

Spark arresting device

Technical Field

The utility model relates to an environmental protection field especially relates to a back-fire relief star device.

Background

The bag-type dust remover for the biomass boiler in the current market has a common problem that one spark is afraid of, and the whole bag of the dust remover can be burnt out by sticking one spark on the bag. The bag burning is a very common phenomenon, and each time the bag is burned, the user is caused with little loss, so that not only the cloth bag needs to be bought again, but also the normal production is influenced.

The existing spark arrester on the market is divided into a plurality of types, one type is a spark detector, a sensor is adopted to detect sparks, steam is sprayed at the tail end of a pipeline after the sparks are detected, and the sparks are extinguished by the steam. Because the temperature in the flue gas pipeline is high, sometimes reaches 300 ℃, the flow velocity of flue gas is fast, basically more than 10 m/s, and generally under the influence of site limitation and equipment, the flue gas pipeline needs to turn every few meters, and under these conditions, the sensitivity of a sensor for detecting mars is influenced. Sometimes, the temperature of the flue is too high, signals can be sent by mistake when no sparks exist, sometimes, the flow rate of the flue gas is too high, the response of the detector is slow, and the sparks cannot be effectively extinguished. In these cases, the reliability of the Mars probe is compromised. Meanwhile, the steam is sprayed into the flue gas pipeline, so that the flue gas humidity in the dust remover is increased, if the temperature in the dust remover is lower than the condensation temperature, the steam can be condensed into water drops on the surface of the cloth bag, the water drops and ash can be agglomerated on the surface of the cloth bag after being mixed, the bag pasting phenomenon is formed, and the cloth bag completely loses the effect. If an electrical fault occurs, such as damage of a detector, damage of a steam valve, loosening or disconnection of a line and the like, the function of extinguishing the spark cannot be realized.

The other is to add powdery fire extinguishing substances, such as lime powder, dry powder and the like into the smoke. The method is that powdery fire extinguishing substances are added into a flue gas pipeline, and the powdery fire extinguishing substances are mixed with part of sparks under the action of flue gas after entering the pipeline, so that the sparks are forced to extinguish. Meanwhile, the powdery fire extinguishing substances are finally attached to the surface of the cloth bag after entering the pipeline, and when the sparks enter the dust remover and are adsorbed on the surface of the cloth bag, the sparks are mixed with the powdery fire extinguishing substances on the surface of the cloth bag and are finally extinguished. However, the problem also exists that if the sparks fall on the inner wall of the dust remover, the dust can be ignited, then the dust can be rapidly reburned under the action of the induced draft fan, and finally, the cloth bag of the whole dust remover is completely burnt. Simultaneously, the mechanical mechanism and the electric control system which are used for adding the powdery fire extinguishing substances greatly reduce the possibility that the sparks are extinguished when the mechanical mechanism and the electric control system are in failure, such as: the powdery fire extinguishing substances can be blocked due to damp, so that the powdery fire extinguishing substances are blocked, and the powdery fire extinguishing substances cannot be smoothly added into a flue gas pipeline; the mechanical transmission mechanism may be stuck by foreign matters; the electronic control system may malfunction, etc. The fire extinguishing substance is added into the smoke gas, so that part of sparks can be extinguished to a certain degree, but the bag burning phenomenon cannot be completely prevented. In addition, the powdery fire extinguishing substance belongs to a consumable product, can not be reused, is expensive, can greatly increase the running cost of equipment after being used for a long time, is not favored by users, and even sometimes refuses to use due to the risk of burning bags.

Above-mentioned two kinds of back-fire relief star device effects can not satisfy user's demand, still one kind utilizes the back-fire relief star board to block the spark in the flue gas, the device of going out the spark, be provided with on the back-fire relief star board and block the space that the spark can let the gas circulation simultaneously, it is more stable to block the spark effect, such as the utility model discloses a novel patent CN208852288U, the utility model discloses an utilize the cell type plate to block the device of spark, the cell type board includes polylith U type groove, but the device is after long-time work, deposition, blocking phenomenon may appear in U type groove department to influence the flue gas circulation, and then influence the normal combustion of boiler.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a back-fire relief star device to solve the problem that above-mentioned prior art exists, on the basis that adopts the baffle to carry out effectual stopping mars, through setting up the face of the wind upset of turning device with the baffle that links to each other with the baffle for the leeward side, utilize the flow of flue gas itself, blow off the deposition that lies in the leeward side on the baffle, avoid influencing the normal burning of boiler because the hole on the baffle blocks up, the device is simple, energy saving.

In order to achieve the above object, the utility model provides a following scheme: the utility model provides a back-fire relief star device, which comprises a housin, be provided with flue gas entry, exhanst gas outlet and turning device on the casing, the flue gas entry with be provided with between the exhanst gas outlet and be used for blockking the mars and have the baffle in air feed circulation space, the middle part of baffle with turning device links to each other, turning device can with the windward side upset of baffle becomes the leeward side.

Preferably, the turnover device comprises an air cylinder, a motion conversion mechanism and a rotating shaft which are connected in sequence, the air cylinder is arranged on the outer wall of the shell, the rotating shaft is rotatably connected with the shell, the rotating shaft is fixedly connected with the middle of the baffle, and the motion conversion mechanism converts the linear motion of the air cylinder into the rotary motion of the rotating shaft.

Preferably, the baffle plate turnover mechanism further comprises a timer and a control device, wherein the timer and the air cylinder are electrically connected with the control device, the timing time of the timer is set, the timer sends a signal to the control device after the timing time is reached, and the control device controls the air cylinder to act to realize the timed turnover of the baffle plate.

Preferably, the baffle comprises a screen and a frame, and screen holes on the screen are vertical to the surface of the screen.

Preferably, the aperture of the sieve pore is 2-5 mm.

Preferably, the flue gas inlet and the flue gas outlet are arranged oppositely, and the baffle plate and the flue gas flowing direction are arranged at an angle of 45-60 degrees.

Preferably, the number of the baffle plates is not less than two, and the adjacent baffle plates are arranged in a non-parallel mode.

Preferably, adjacent baffles are symmetrically arranged along the flow direction of the flue gas.

Preferably, the housing is a straight cylinder, and the baffle has the same shape as the cross section of the straight cylinder.

Preferably, the distance between the baffle and the inner wall of the shell is set to be 2-4 mm.

The utility model discloses for prior art gain following technological effect:

1. the windward side of the baffle is turned into the leeward side by arranging the turning device connected with the baffle, the accumulated dust on the leeward side on the baffle is blown down by utilizing the flow of the flue gas, and the influence on the normal combustion of the boiler due to the blockage of the holes on the baffle is avoided.

2. Set up the baffle in this application to be 45 ~ 60 angles with the flue gas flow direction, because sieve mesh perpendicular to screen cloth surface, consequently the flue gas flow direction has 30 ~ 45 contained angles with the hole depth direction of sieve mesh, so the mars in the flue gas is when passing the sieve mesh according to former flow direction, even if the mars size is less than the sieve mesh size, still can receive blockking of sieve mesh to the collision probability who has increased mars and baffle on the whole makes the mars can fully extinguish.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic structural view of a spark arrestor device;

FIG. 2 is a perspective view of a spark arrestor device;

the device comprises a shell 1, a smoke inlet 2, a smoke outlet 3, a turnover device 4, a baffle 5, a cylinder 6, a motion conversion mechanism 7, a rotating shaft 8 and smoke a.

Detailed Description

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

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

Example one

As shown in fig. 1-2, the present embodiment provides a spark arrester, including a housing 1, a smoke inlet 2, a smoke outlet 3, and a turnover device 4 are provided on the housing 1, a baffle 5 is provided inside the housing 1 and between the smoke inlet 2 and the smoke outlet 3, the baffle 5 can block sparks, and a gap for gas to flow through is further provided on the baffle 5. The middle part of baffle 5 links to each other with turning device 4, and turning device 4 is used for turning over the windward side of baffle 5 into leeward side, and wherein the one side of baffle 5 towards flue gas entry 2 is the windward side, and the one side towards exhanst gas outlet 3 is leeward side. The turning device 4 can be a combination of a motor and a rotating shaft, the rotating shaft is directly driven by the motor to rotate forwards and backwards, and the rotating shaft is connected with the middle of the baffle plate so as to drive the baffle plate to turn over. The turnover device 4 can also be composed of an air cylinder, a motion conversion mechanism and a rotating shaft, the rotating shaft is connected with the middle of the baffle, and the motion conversion mechanism converts the linear motion of the air cylinder into the rotating motion of the rotating shaft and then drives the baffle to rotate. The turning device 4 can also be any other device which can rotate the baffle 5 so as to realize the conversion between the windward side and the leeward side.

The windward side of the baffle is turned into the leeward side by the turning device 4 connected with the baffle 5, the accumulated dust on the leeward side on the baffle 5 is blown down by utilizing the flow of the flue gas, and the influence on the normal combustion of the boiler due to the blockage of the holes on the baffle 5 is avoided.

Example two

On the basis of the first embodiment, the turning device 4 may further be configured to: including cylinder 6, motion conversion mechanism 7 and the axis of rotation 8 that connects gradually, wherein, cylinder 6 sets up on the outer wall of casing 1, and axis of rotation 8 passes casing 1 and is connected with casing 1, is provided with the bearing in the junction of axis of rotation 8 and casing 1, realizes through setting up the bearing that axis of rotation 8 can free rotation for casing 1. The rotating shaft 8 is fixedly connected with the middle of the baffle 5, so that when the rotating shaft 8 rotates, the baffle 5 can be driven to rotate together. The motion conversion mechanism 7 is connected to the cylinder 6 and the rotating shaft 8, respectively, and is capable of converting a linear motion of the cylinder 6 into a rotational motion of the rotating shaft 8.

In this embodiment, the motion conversion mechanism 7 is preferably a link mechanism, one end of the link mechanism is rotatably connected to the end of the piston rod of the cylinder 6, and the other end of the link mechanism is fixedly connected to the end of the rotating shaft 8, so that the linear reciprocating motion of the cylinder is converted into the forward rotation and reverse rotation motion of the rotating shaft 8. Of course, the motion conversion mechanism is not limited to a link mechanism, and for example, the motion conversion mechanism may also be a rack and pinion structure engaged with each other, where a rack is connected to a piston rod of the cylinder 6, a pinion engaged with the rack is fixed to an end of the rotation shaft 8, and the rack is driven by the cylinder to move up and down, so as to be converted into forward and reverse motions of the pinion, and further drive the rotation shaft 8 to rotate.

EXAMPLE III

On the basis of embodiment two, still include timer and controlling means in this embodiment, timer and cylinder 6 all with controlling means electric connection, when using the spark-arrest star device of this embodiment, at first set for the timing time of timer, reach the timing time after, the timer sends the signal to controlling means, controlling means control cylinder 6 starts, the piston rod of cylinder 6 passes through link mechanism and drives axis of rotation 8 rotatory to the realization turns over into the leeward side with the windward side of baffle 5. The implementation of the timed start or stop of a device is realized by those skilled in the art according to the prior art, and is not described herein, for example, in the patent application with application number 201710291401.0 and named as a timed control system, a method for determining whether to start an electric water pump based on timing information is disclosed.

Example four

On the basis of embodiment one, the concrete structure of baffle 5 sets up to include screen cloth and frame in this embodiment, and the frame sets up around the screen cloth for strengthen the holistic structural strength of screen cloth. The sieve mesh perpendicular to screen cloth surface on the screen cloth, specific sieve mesh size and sieve mesh density are confirmed according to the raw materials in the biomass boiler, and the produced mars of different raw materials burning quantity and particle diameter are different, and the diameter of selecting the sieve mesh in this embodiment is 2 ~ 5 mm's screen cloth.

Further, the flue gas inlet 2 and the flue gas outlet 3 are arranged oppositely on the shell 1, the flow direction of flue gas flows from the flue gas inlet to the flue gas outlet, the baffle plate 5 is arranged in the shell 1 and forms an angle of 45-60 degrees with the flow direction of the flue gas, and under the angle range, the sieve pore direction on the baffle plate and the flow direction of the flue gas form an angle of 30-45 degrees, so that the collision probability of the sparks and the baffle plate is increased, and the sparks can be fully extinguished.

Further, in this embodiment, baffle 5 is no less than two to make the mars that first baffle failed to effectively block stop, extinguish by a baffle next, improve the effect of putting out mars.

Furthermore, in this embodiment, the two adjacent baffles are different in setting angle, and the two baffles are in a non-parallel position relationship. The purpose of this kind of setting lies in because first baffle has 45 ~ 60 contained angles with the flue gas flow direction, therefore, the flow direction of flue gas changes by the influence of baffle behind the flue gas flow through first baffle, becomes perpendicular with first baffle, and if second baffle is parallel with first baffle, then the flue gas is when getting into second baffle, is parallel with the hole depth direction of second baffle, then can not play the effect that increases the collision probability of mars and baffle. Therefore, the adjacent baffles need to be arranged at different angles so as to increase the collision probability of the sparks and the baffles. In this embodiment, as a preferred embodiment, the adjacent baffles are symmetrically arranged along the flow direction of the flue gas.

Further, the housing 1 is provided in a straight cylinder shape, the cross-sectional shape of the straight cylinder shape may be a circle, an ellipse, a square, a regular polygon, etc., and the shape of the baffle 5 is the same as the cross-sectional shape of the housing 1.

Further, a gap is formed between the baffle 5 and the shell 1 to prevent the inner wall of the shell 1 from being scratched by the baffle 5 in the overturning process, but the gap cannot be too large to prevent a large amount of smoke from flowing through the gap, so that the effect of stopping sparks is affected. The preferable gap size in this embodiment is 2-4 mm.

It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A spark arrester star device which characterized in that: the gas stove comprises a housing, be provided with flue gas entry, exhanst gas outlet and turning device on the casing, the flue gas entry with be provided with between the exhanst gas outlet and be used for blockking the mars and have the baffle in air feed circulation space, the middle part of baffle with turning device links to each other, turning device can with the windward side upset of baffle becomes the leeward side.

2. A fire stop star system as claimed in claim 1, wherein: the turnover device comprises an air cylinder, a motion conversion mechanism and a rotating shaft which are sequentially connected, the air cylinder is arranged on the outer wall of the shell, the rotating shaft is rotatably connected with the shell, the rotating shaft is fixedly connected with the middle of the baffle, and the motion conversion mechanism converts linear motion of the air cylinder into rotary motion of the rotating shaft.

3. A fire stop star system as claimed in claim 2, wherein: the baffle plate overturning mechanism is characterized by further comprising a timer and a control device, wherein the timer and the air cylinder are electrically connected with the control device, the timing time of the timer is set, the timer sends a signal to the control device after the timing time is reached, and the control device controls the air cylinder to act to realize the timed overturning of the baffle plate.

4. A fire stop star system as claimed in claim 1, wherein: the baffle comprises a screen and a frame, and screen holes on the screen are vertical to the surface of the screen.

5. A fire stop star system as claimed in claim 4, wherein: the aperture of the sieve pore is 2-5 mm.

6. A fire stop star system as claimed in claim 4, wherein: the flue gas inlet and the flue gas outlet are arranged oppositely, and the baffle plate and the flow direction of the flue gas form an angle of 45-60 degrees.

7. A fire stop star system as claimed in claim 6, wherein: the number of the baffle plates is not less than two, and the adjacent baffle plates are arranged in a non-parallel mode.

8. A fire stop star system as claimed in claim 7, wherein: the adjacent baffles are symmetrically arranged along the flowing direction of the flue gas.

9. A fire stop star system as claimed in claim 1, wherein: the shell is in a straight cylinder shape, and the shape of the baffle is the same as the cross section of the straight cylinder shape.

10. A fire stop star system as claimed in claim 1, wherein: the distance between the baffle and the inner wall of the shell is set to be 2-4 mm.