CN111039042B - Material taking device suitable for stokehold feeding system - Google Patents

Abstract

The invention discloses a material taking device suitable for a stokehole feeding system, which comprises a storage bin, a rotary material homogenizer which is communicated with a feeding hole of the storage bin and can feed materials to the interior of the storage bin in a 0-360-degree direction, and a planetary material taking device which is partially arranged at the bottom of the interior of the storage bin; the rotary material homogenizing device comprises a material guiding supporting seat arranged at a material inlet of the material bin, a material guiding homogenizing part supported on the material guiding supporting seat and rotatably connected with the material guiding supporting seat, and a rotary material homogenizing driving mechanism for driving the material guiding homogenizing part to rotate; the planetary material taking device comprises a connecting seat which can rotate relative to the material bin and is hollow in the middle, a spiral material taking device arranged on the connecting seat and a planetary material taking driving mechanism for driving the connecting seat to rotate so as to drive the spiral material taking device to rotate, wherein the spiral material taking device partially penetrates through the hollow middle of the connecting seat to extend downwards, and the material bin is communicated with the outside through a material outlet of the spiral material taking device; the invention can feed uniformly and has the advantage of preventing subsequent equipment from blocking.

Description

Material taking device suitable for stokehold feeding system

Technical Field

The invention belongs to the field of front feeding of a household garbage incinerator, and particularly relates to a material taking device suitable for a front feeding system.

Background

At present domestic waste incinerator stokehold feed system does not have several and is normal, it is inhomogeneous to have the feed bin material to pile up basically, it is difficult to hold the material position in the feed bin accurately, the material easily piles up into the group and ridges simultaneously, cause the effective use volume of feed bin to be greatly reduced, and because biomass material has the difference, therefore the biomass material that adds in different time quantums has the difference, and then the heap state in the feed bin is also different, thereby cause to adopt simple material mode of getting can exist and get the material unevenly, and be difficult to accomplish when getting the material and get the material at no dead angle.

For example, the invention of chinese patent CN102200289A discloses a stokehole feeding system of a biomass power plant, which includes a feeding bin, a first-stage horizontal feeding mechanism disposed at the bottom of the feeding bin, and a second-stage horizontal feeding mechanism for feeding to an incinerator, wherein the first-stage horizontal feeding mechanism and the second-stage horizontal feeding mechanism are communicated through a vertical chute, a biomass bin kick-out device is disposed at the lower part of the feeding bin above the first-stage horizontal feeding mechanism, the first-stage horizontal feeding mechanism is composed of a plurality of first-stage shaftless screw feeders driven by a motor and arranged in parallel, an outlet of each first-stage shaftless screw feeder is connected to an inlet of the vertical chute, an outlet of the vertical chute is connected to a feeding port of the second-stage horizontal feeding mechanism, and the biomass bin kick-out device includes a plurality of biomass spiral kick-out shafts arranged in parallel. This patent passes through living beings feed bin kickoff structure, broken hunch and to the effect of one-level feed broadcast material when playing living beings such as straw in the storehouse and bridging, bear the storehouse pressure of a large amount of living beings simultaneously, make the shaftless spiral start operation at the bottom of the storehouse become light, it has realized the advantage of certain even kickoff unloading, but on the one hand, it is also only to the processing of easy winding living beings such as straw, can't accomplish to the homodisperse and the even material of getting in the feed bin of all living beings, for example, there is a large amount of soft materials in the domestic waste, on the other hand, it can only get the material directly over the horizontal feed mechanism, the material of remote part such as corner in the feed bin is difficult to be taken away, long-time accumulation gets off and inevitably causes the caking, not only there is the risk of blockking up feed mechanism, simultaneously still can obviously reduce the effective use volume of feed bin.

As shown in chinese utility model patent CN206890511U, it discloses a boiler stokehole feeding device, which comprises a storage bin, a primary feeder, a blanking pipe, a mechanical flap gate, a pneumatic gate, an expansion joint, a connecting pipe, a secondary feeder, a thermocouple, and an air pipe; the inlet end of the transversely-arranged one-level feeder is connected with the outlet end of the storage bin, the outlet end of the one-level feeder is connected with the inlet end of the blanking pipe, the air pipe is obliquely inserted into the blanking pipe and is welded and fixed with the blanking pipe, the outlet end of the blanking pipe is directly connected with the mechanical flap gate, the mechanical flap gate is directly matched and connected with the pneumatic gate, the pneumatic gate is connected with the inlet end of the connecting pipe through an expansion joint, and the outlet end of the connecting pipe is connected with the transversely-arranged second-level feeder. The feed bin bottom blanking pipe export of this patent is just to one-level batcher, there is not effectual safeguard measure, cause the material to easily pile up in the pipeline and have the risk that blocks up the shut down batcher, and easily pile up into the ridge in the feed bin, the conglomeration, the batcher in-process is carried to the material and easily blocks up the pipeline, the rear is carried to the material of conglomeration simultaneously, not only can cause to block up back equipment and can make the burning insufficient, and then produce a large amount of carbon monoxide, influence operational environment after revealing, and to the potential danger of people very big moreover.

As shown in chinese utility model patent CN208735624U, it discloses a stable stokehole feeding system of a biomass circulating fluidized bed boiler, comprising a buffer bin, a material-taking screw machine, a blanking pipe and a feeding double screw machine; the buffer bin is in a trapezoid shape, and a discharge hole at the bottom of the buffer bin is butted with a feed inlet of the material taking screw machine; the blanking pipe is in a trapezoid shape, a feed port at the top of the blanking pipe is in butt joint with a discharge port of the material taking screw machine, and a discharge port at the bottom of the blanking pipe is in butt joint with a feed port of the feeding screw machine; the feeding double-screw machine is arranged in a downward inclined mode, and a discharge port of the feeding double-screw machine is in butt joint with a hearth blanking port. This patent can realize the difficult putty of blanking pipe to a certain extent through the two screw machines of feeding that the slope set up, but on the one hand, its buffering feed bin is direct unloading to getting the material screw machine, there is the inhomogeneous phenomenon of serious feed, simultaneously to biomass material, when adopting different types of living beings, its fluffy degree is different, then the volume that falls into getting the material screw machine and being carried to in the follow-up equipment is probably different, cause the combustion calorific value uneven, on the other hand, the material of buffering feed bin is difficult to accomplish no dead angle feed, there is the condition of piling up in the corner for a long time, easy scale deposit adhesion is in the feed bin, the clear material degree of difficulty has been promoted, and the effective use volume of feed bin has been reduced.

In addition, according to the arrangement of the material taking of the storage bin, when the screw shaft rotates and cannot damage the accumulation of the materials, a bridge crossing between the corner parts and the wall of the storage bin is easily formed, particularly soft biomass such as household garbage, straws and the like, the discharging amount of the screw shaft is rapidly reduced under the condition that the material exists in the storage bin but the screw shaft idles, the serious material extrusion condition is generated in the running process, and the screw shaft can be driven to overload and trip, the screw shaft is distorted and broken, and sometimes even spontaneous combustion is caused by the friction heating of local biomass.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art, and provides a material taking device which is uniform in feeding, has the function of preventing follow-up equipment from being blocked and is suitable for a stokehole feeding system, and can take materials without dead angles.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the material taking device comprises a bin, a rotary material homogenizer which is communicated with a feeding hole of the bin and can feed materials to the bin in a 0-360-degree direction, and a planetary material taking device which is partially arranged at the bottom of the bin; the rotary material homogenizer comprises a material guide supporting seat arranged at a material inlet of the storage bin, a material guide homogenizing part supported on the material guide supporting seat and rotatably connected with the material guide supporting seat, and a rotary material homogenizing driving mechanism for driving the material guide homogenizing part to rotate; planet tripper is including can be relative the feed bin rotates and the middle part is hollow connecting seat, detachably sets up spiral tripper on the connecting seat and is used for the drive connecting seat rotary motion and then drives spiral tripper rotary motion's planet material taking actuating mechanism, spiral tripper part passes the connecting seat be hollow middle part downwardly extending, the feed bin passes through spiral tripper's discharge gate and outside intercommunication.

According to some specific and preferred aspects of the present invention, the rotary material homogenizer further includes a first rotary support body rotatably disposed on the material guiding support seat, the material guiding homogenizing member is rotatably connected to the material guiding support seat through the first rotary support body, and the rotary material homogenizing driving mechanism drives the first rotary support body to rotate so as to drive the material guiding homogenizing member to rotate.

According to some specific and preferred aspects of the present invention, the material guiding support seat comprises an upper mounting seat, a lower mounting seat, and an upper material guiding cylinder communicated with an upper portion of the upper mounting seat, and the first rotary support body is rotatably disposed at a lower portion of the upper mounting seat;

the material guiding and homogenizing part comprises a material guiding barrel arranged on the first rotary supporting body and a material guiding turning plate detachably connected with the lower end part of the material guiding barrel, and the material guiding turning plate is obliquely arranged and can adjust the inclination angle; the upper portion cover of mount pad is established down on the guide bucket, the lower part with the feed inlet of feed bin communicates.

According to some specific and preferred aspects of the present invention, the planetary material taking device further includes a second rotary support body rotatably disposed on the storage bin, the connection seat is fixedly disposed on the second rotary support body, and the planetary material taking driving mechanism drives the second rotary support body to make a circular motion so as to drive the connection seat to make a rotary motion, thereby driving the spiral material taking device to make a circular motion.

According to some specific and preferred aspects of the present invention, the screw feeder comprises a support cylinder located in the hollow middle of the connecting seat, a screw shaft capable of rotating around its own axial lead, a transmission chain in gear transmission with the screw shaft, and a driving motor for driving the transmission chain to rotate, the support cylinder has a feed inlet and a discharge outlet, the feed inlet is communicated with the inside of the bin, the discharge outlet is communicated with the outside, one end of the screw shaft is rotatably disposed on the inner wall of the support cylinder, and the other end of the screw shaft extends out of the support cylinder from the feed inlet to enter the bin.

According to some preferred aspects of the present invention, the distance between the other end of the screw shaft and the inner wall of the silo is 0.1 to 5cm, preferably 0.1 to 3 cm.

According to some specific and preferred aspects of the present invention, the support cylinder includes a partition plate for separating the drive chain from the discharge port and the feed port, the drive chain extending in an up-down direction, and the screw shaft extending in a horizontal direction.

According to some specific and preferred aspects of the present invention, the material taking device further comprises a plurality of level sensors disposed on an upper portion of an inner wall of the bin, and the level sensors are uniformly distributed along a circumferential direction of the bin.

According to some specific and preferred aspects of the present invention, the material taking device further comprises a control system, a temperature sensor disposed at an upper portion inside the bin and in communication with the control system, and a cooling device and a steam fire extinguishing device respectively partially disposed on the bin and in communication with the control system, wherein the level sensor is in communication with the control system.

According to some specific and preferred aspects of the present invention, the material extracting apparatus further comprises a plurality of explosion vents provided on the wall of the hopper.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages:

the material taking device can take away all materials in the bin without dead angles, avoids the defect that a conventional screw conveyor can only convey materials right above the bin, has the function of disturbing and dispersing the materials in the bin, further reduces the probability of the materials forming into ridges in the bin, improves the effective use volume of the bin, enables each position in the bin to be used by stored materials, and enables the planetary material taking device to obtain enough materials, thereby avoiding the condition that the screw shaft idles due to the existence of the materials in the bin; on the other hand, the possibility of material agglomeration is further reduced, the subsequent conveyed materials are ensured to be fully combusted in the incinerator, the generation of carbon monoxide is reduced (if the agglomerated materials enter the incinerator, incomplete combustion is possibly generated), the production safety is improved, and the working environment is optimized; meanwhile, the material can be stably and quantitatively supplied to the subsequent process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 exercise.

FIG. 1 is a schematic diagram of the overall structure of a stokehole feeding system;

FIG. 2 is a schematic view of another angle of the stokehold feed system;

FIG. 3 is a side view schematic of a stokehold feed system;

FIG. 4 is a schematic side view of a material extracting apparatus of the present invention;

FIG. 5 is a schematic view of the overall appearance structure of the rotary homogenizer;

FIG. 6 is a schematic view showing the relationship between the components of the rotary homogenizer;

FIG. 7 is a schematic view of the planetary material taker in cooperation with the storage bin;

FIG. 8 is a schematic view of the overall structure of the planetary material taking device;

FIG. 9 is a schematic view of the overall appearance of the material conveying device;

FIG. 10 is a schematic view of the mating relationship of the components of the material delivery apparatus;

FIG. 11 is a side view of the kick-off homogenizing cylinder;

FIG. 12 is a schematic structural view of a material-stirring and homogenizing roller;

FIG. 13 is a schematic structural view of a blanking device;

FIG. 14 is a side view of the blanking device;

wherein, 1, a material taking device; 11. a storage bin; 12. rotating the material homogenizer; 121. a material guiding support seat; 1211. an upper mounting seat; 1212. a lower mounting seat; 1213. an upper material guide cylinder; 122. a material guiding and homogenizing part; 1221. a material guiding barrel; 1222. a material guiding turnover plate; 123. rotating the homogenizing driving mechanism; 124. a first rotary support; 13. a planetary material taking device; 131. a connecting seat; 132. a spiral material taking device; 1321. a support cylinder; 13211. a partition plate; 1322. a screw shaft; 1323. a drive chain; 1324. a drive motor; 133. a planetary material taking driving mechanism; 134. a second rotary support; 2. a material conveying device; 21. a chain scraper conveyor; 22. a material buffer bin; 231. a material stirring and homogenizing roller; 2311. a drum body; 2312. a material stirring and homogenizing plate; 2313. a recessed portion; 241. cleaning the rotating shaft; 242. cleaning a scraping plate; 25. an outer casing; 3. a blanking device; 31. a material bearing pipe; 321. a discharging cover shell; 322. a discharging rotating shaft; 323. a discharge partition plate; 324. a discharge drive assembly; 33. a stokehole feed pipe; 34. an accommodating chamber; 35. a purging mechanism; 36. blanking a pneumatic gate valve; 4. feeding a pneumatic gate valve.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features, or indirectly contacted with the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1-14, this example provides a stokehole feeding system, which includes a material taking device 1, a material conveying device 2 and a material discharging device 3, which are connected in sequence, wherein the material is taken by the material taking device 1 and then enters the material conveying device 2, and then is supplied to an incinerator by the material discharging device 3, in this example, the material is respectively dispersed and uniformly fed by each stage of device, so that the material is continuously, stably, uniformly and quantitatively conveyed to the incinerator, the incinerator is ensured to be fully combusted, the generation of carbon monoxide is reduced, and even if a small amount of carbon monoxide is generated, the feeding system of this example can also prevent the occurrence of smoke return phenomenon at a material port and open fire return.

Specifically, in this example, as shown in fig. 1 to 8, the material taking device 1 includes a bin 11, a rotary homogenizer 12 which is communicated with the feed port of the bin 11 and can feed materials in the direction of 0 to 360 ° inside the bin, and a planetary material taking device 13 which is partially arranged at the bottom inside the bin 11.

Specifically, in practical application, the storage bin 11 can be set to be a cylinder or a cylinder-like body, and can be formed by rolling a steel plate, and the wall of the storage bin can be provided with a plurality of explosion discharging doors, so that explosion can be discharged in time when explosion is generated inside the storage bin.

In this embodiment, the rotary material homogenizer 12 includes a material guiding support seat 121 disposed at the material inlet of the storage bin 11, a material guiding homogenizing member 122 supported on the material guiding support seat 121 and rotatably connected to the material guiding support seat 121, and a rotary material homogenizing driving mechanism 123 (which may adopt a frequency conversion motor commonly used in the prior art) for driving the material guiding homogenizing member 122 to rotate;

the planetary material taking device 13 includes a connecting seat 131 capable of rotating relative to the bin 11 and having a hollow middle portion, a spiral material taking device 132 detachably disposed on the connecting seat 131, and a planetary material taking driving mechanism 133 for driving the connecting seat 131 to rotate so as to drive the spiral material taking device 132 to rotate, wherein the spiral material taking device 132 partially penetrates through the hollow middle portion of the connecting seat 131 and extends downward, and the bin 11 is communicated with the material conveying device 2 through a discharge port of the spiral material taking device 132.

As shown in fig. 4-6, the rotary material homogenizer 12 further includes a first rotary supporting body 124 rotatably disposed on the material guiding supporting seat 121, the material guiding homogenizing member 122 is rotatably connected to the material guiding supporting seat 121 through the first rotary supporting body 124, and the rotary material homogenizing driving mechanism 123 drives the first rotary supporting body 124 to rotate so as to drive the material guiding homogenizing member 122 to rotate; specifically, the material guiding support seat 121 includes an upper mounting seat 1211, a lower mounting seat 1212, and an upper material guiding cylinder 1213 communicating with an upper portion of the upper mounting seat 1211, and the first rotary support 124 is rotatably disposed at a lower portion of the upper mounting seat 1211; the material guiding and homogenizing part 122 comprises a material guiding barrel 1221 arranged on the first rotary support body 124 and a material guiding turning plate 1222 detachably connected with the lower end part of the material guiding barrel 1221, and the material guiding turning plate 1222 is obliquely arranged and can adjust the inclination angle; the upper part of the lower mounting seat 1212 is sleeved on the material guiding barrel 1221, and the lower part is communicated with the feed inlet of the bin 11. The arrangement enables the materials to be uniformly dispersed at each corner of the storage bin 11 when being conveyed, and the effective use volume of the storage bin 11 is improved.

In this embodiment, as shown in fig. 3 to 4 and 7 to 8, the planetary material taking device 13 further includes a second rotary supporting body 134 rotatably disposed on the bin 11, the connecting seat 131 is fixedly disposed on the second rotary supporting body 134, and the planetary material taking driving mechanism 133 drives the second rotary supporting body 134 to perform a circular motion so as to drive the connecting seat 131 to perform a rotary motion, thereby driving the spiral material taking device 132 to perform a circular motion. The screw material taking device 132 includes a supporting cylinder 1321 located in the hollow middle of the connecting seat 131, a screw shaft 1322 capable of rotating around its own axis, a transmission chain 1323 in gear transmission with the screw shaft 1322, and a driving motor 1324 for driving the transmission chain 1323 to rotate, the supporting cylinder 1321 has a feeding port and a discharging port, the feeding port is communicated with the inside of the bin 11, the discharging port is communicated with the material conveying device 2, one end of the screw shaft 1322 is rotatably arranged on the inner wall of the supporting cylinder 1321, and the other end of the screw shaft 1322 extends out of the supporting cylinder 1321 from the feeding port and enters the bin 11.

Specifically, in practical application, the distance between the other end of the spiral shaft 1322 and the inner wall of the bin 11 may be set to 0.1-5cm or 0.1-3cm, in this example, it is only required to ensure that the spiral material taking device 132 can take the material in the bin 11 without a dead angle in the process of rotary material taking.

As shown in fig. 7 to 8, the support cylinder 1321 includes a partition plate for separating the drive chain 1323 from the discharge port and the feed port, the drive chain 1323 extends in the up-down direction, and the screw shaft 1322 extends in the horizontal direction; the partition 13211 is provided to prevent material from entering the interior of the drive components, such as the drive chain 1323, and thus to prevent interference with the operation of the apparatus.

In this example, the planetary material extractor 13 with the special design can remove all materials in the bin 11 without dead angles, so that the defect that a conventional screw conveyor can only convey materials right above the bin is avoided, and meanwhile, the planetary material extractor 13 has a disturbance and dispersion effect on the materials in the bin 11, so that the probability that the materials are agglomerated into ridges in the bin 11 is further reduced, on one hand, the effective use volume of the bin 11 is increased, each position in the bin 11 is used by stored materials, and meanwhile, the planetary material extractor 13 can obtain enough materials, so that the condition that the screw shaft 1322 idles due to the existence of the materials in the bin is avoided; on the other hand, the possibility of material agglomeration is further reduced, the follow-up conveyed materials are ensured to be fully combusted when entering the incinerator, the generation of carbon monoxide is reduced (if the agglomerated materials enter the incinerator, incomplete combustion is likely to occur), the production safety is improved, and the working environment is optimized.

In this example, the material taking device 1 further comprises a plurality of material level sensors arranged on the upper part of the inner wall of the bin 11, and the plurality of material level sensors are uniformly distributed along the circumferential direction of the bin 11; further, extracting device 1 still includes control system, sets up on the inside upper portion of feed bin 11 and with control system communication connection's temperature sensor to and partly set up respectively on feed bin 11 and with control system communication connection's cooling device and steam fire extinguishing device, level sensor and control system communication connection. The material level sensors are preferably arranged at 3 or more positions and can be uniformly distributed at the same height position of the inner wall of the storage bin 11, when any two material level sensors exceed a set value, the control system informs the rotary material homogenizer 12 of stopping working and informing the feeding position of stopping feeding, and when any two material level sensors are lower than the set value, the control system informs the rotary material homogenizer 12 of continuing working and informs the feeding position of continuing feeding; meanwhile, the temperature sensor is matched with the cooling device and the steam fire extinguishing device, when abnormal conditions such as fire in the bin 11 occur, the temperature sensor can start the temperature sensor and the steam fire extinguishing device to extinguish fire after detecting high temperature, and meanwhile, the control system controls the rotary material homogenizer 12 to stop feeding.

In this example, as shown in fig. 9 to 12, the material conveying device 2 includes a chain plate conveyor 21, a material buffer bin 22 disposed at a feeding end of the chain plate conveyor 21 and communicated with a discharging port of the spiral material taking device 132, a material stirring and homogenizing mechanism disposed at a material outlet of the material buffer bin 22, and a material cleaning mechanism disposed at a discharging end of the chain plate conveyor 21; wherein, dial material mixing mechanism including set up in drag chain conveyor 21 top and be located the material exit of material buffer bin 22 dial material mixing cylinder 231 and be used for driving to dial material mixing cylinder 231 pivoted and dial material mixing drive assembly, dial material mixing cylinder 231 including rotate the cylinder body 2311 that sets up around self axial lead and set up on cylinder body 2311 and the multiunit that sets gradually along cylinder body 2311 circumferencial direction dial material mixing assembly, every group dials material mixing assembly and has the material mixing plate 2312 of dialling that two at least morphologies are different, the morphology includes length, width, extending direction and thickness.

Specifically, as shown in fig. 11, a recess 2313 is formed between two adjacent groups of the material stirring and homogenizing assemblies, wherein the opening of the recess 2313 turned to the bottom of the roller body 2311 (the rotation direction thereof is the direction B in the drawing) is opposite to the running direction (the direction a in fig. 11) of the chain scraper conveyor 21.

As shown in fig. 11 to 12, each group of material shifting and equalizing components is formed by splicing at least 3 material shifting and equalizing plates 2312 along the length direction of the roller body 2311, wherein at least two material shifting and equalizing plates 2312 have different lengths and extending directions, and the surfaces of the spliced material shifting and equalizing components are uneven. Above-mentioned setting makes group material mixing cylinder 231 can be with the material homodisperse of carrying at drag chain conveyor 21, guarantees to send into subsequent material and lasts the homogeneous, and can also have certain disturbance crushing effect, avoids the conglomeration material to get into follow-up technology, and unevenness's design makes group material mixing cylinder 231 atress dispersion when the disturbance material more, staggers, not concentrate, and then reduces the resistance, avoids taking place the card phenomenon of dying, is favorable to system's steady operation.

As shown in fig. 9 to 10, the material buffer bin 22 includes a buffer bin body erected above the feeding end of the chain-plate conveyor 21, and a high material level detection sensor and a low material level detection sensor respectively arranged on the buffer bin body, the high material level detection sensor is arranged on the upper portion of the buffer bin body, the low material level detection sensor is arranged on the part of the buffer bin body close to the material-shifting and homogenizing roller 231, and the buffer bin body and the chain-plate conveyor 21 form a space for buffering materials. The above arrangement can inform the planetary material taking device 13 to stop taking the material when the high material level detecting sensor detects more material, and inform the planetary material taking device 13 to continue taking the material when the low material level detecting sensor detects less material.

As shown in fig. 10, the material cleaning mechanism includes a cleaning rotating shaft 241 rotatably disposed around its axis, a cleaning driving assembly for driving the cleaning rotating shaft 241 to rotate, and a plurality of cleaning scraping plates 242 disposed on the outer peripheral wall of the cleaning rotating shaft 241; specifically, the cleaning rotating shaft 241 is located obliquely above the chain conveyor 21, the extending direction of the cleaning rotating shaft 241 is perpendicular to the running direction of the chain conveyor 21, the plurality of cleaning scraping plates 242 are uniformly distributed along the circumferential direction of the cleaning rotating shaft 241, and the extending direction of the cleaning scraping plates 242 is perpendicular to the extending direction of the cleaning rotating shaft 241.

Further, the shortest distance between the end of the cleaning scraper plate 242 away from the cleaning rotating shaft 241 and the chain conveyor 21 is less than 3cm, preferably less than 1cm, so as to ensure that all the materials of the chain conveyor 21 can be scraped and dropped.

In this embodiment, the material conveying device 2 further includes a control system, and a first rotation speed detection sensor for detecting the rotation speed of the material stirring and homogenizing mechanism and a second rotation speed detection sensor for detecting the rotation speed of the material cleaning mechanism, which are respectively in communication connection with the control system.

In this example, the material conveying device 2 further comprises an outer casing 25 for preventing the internal material and the gas flow from diffusing outwards, and a plurality of explosion vents are arranged on the outer casing 25. Specifically, the material in this example is almost in a sealed state when passing through the material taking device 1, the material conveying device 2, and the blanking device 3.

In this example, as shown in fig. 13 to 14, the blanking device 3 includes a material receiving pipe 31, a discharging mechanism and a stokehole feeding pipe 33 which are sequentially communicated, and an upper opening of the material receiving pipe 31 is communicated with the material conveying device 2; the discharging mechanism comprises a discharging cover 321 with an upper opening and a lower opening, a discharging rotating shaft 322 which is partially or completely arranged in the discharging cover 321 and is rotatably arranged around the axis of the discharging rotating shaft, a plurality of discharging partition plates 323 which are positioned in the discharging cover 321 and arranged on the discharging rotating shaft 322, and a discharging driving component for driving the discharging rotating shaft 322 to rotate, wherein the discharging partition plates 323 are uniformly distributed along the circumferential direction of the discharging rotating shaft 322, the extending direction of the discharging partition plates 323 is vertical to the length direction of the discharging rotating shaft 322, the discharging partition plates 323, the discharging rotating shaft 322 and the discharging cover 321 form a plurality of containing cavities 34 which are uniformly distributed along the circumferential direction of the discharging rotating shaft 322, the upper opening of the discharging cover 321 is communicated with the lower opening of the material receiving pipe 31, and the lower opening of the discharging cover 321 is communicated with the upper opening of the feeding pipe 33 in front of the furnace.

In this example, an end of the discharge partition 323 remote from the discharge shaft 322 abuts against an inner wall of the discharge housing 321. Specifically, the discharging partition 323 comprises a partition body and a scraper, one end of the partition body is disposed on the discharging rotating shaft 322, the other end of the partition body is connected with the scraper, and the scraper abuts against the inner wall of the discharging housing 321.

In this example, the scraper is made of a flexible wear-resistant rubber. Above-mentioned setting can form almost sealed chamber 34 that holds, at discharge mechanism pivoted in-process, only hold chamber 34 and can the feeding with one or more that hold that material holding pipe 31 corresponds, just also one or more that correspond with stokehold feed pipe 33 hold chamber 34 and can the ejection of compact equally, thereby realized keeping apart internal pressure, the function of inside air current circulation of locking, further blocked the return smoke that burns burning furnace probably takes place and returned open flame and flee, the safety is promoted, the leakage of carbon monoxide has been blocked.

In this example, the maximum opening width of the receiving chamber 34 is equal to or less than the lower opening width of the receiving pipe 31, and the upper opening width of the stokehole feeding pipe 33 is equal to or more than the maximum opening width of the receiving chamber 34.

As shown in fig. 13 to 14, the discharging mechanism further includes a blowing mechanism 35 communicated with the accommodating cavity 34 for blowing an air flow into the accommodating cavity 34, wherein the air flow is in a direction toward the discharging rotating shaft 322, so that the material can be in a dynamic state in the accommodating cavity 34, and agglomeration and adhesion are further avoided; the stokehole feeding pipe 33 is a telescopic pipeline; further, the blanking device 3 further comprises a blanking pneumatic gate valve 36 for controlling the opening and closing of the lower opening of the discharging cover 321, and the blanking pneumatic gate valve 36 is arranged between the discharging mechanism and the stokehole feeding pipe 33; the material-bearing pipe 31 is provided with a manhole and/or a manhole.

In this example, a feeding pneumatic gate valve 4 for opening and closing a communication passage between the material taking device 1 and the material conveying device 2 is provided therebetween.

In this example, the feeding system includes a central control system, and the central control system is composed of a control system included in the material conveying device 2, a control system included in the material taking device 1, and controllers of other electrical devices.

Specifically, in this embodiment, the material conveying device 2 further includes a temperature sensor disposed in the outer housing 25, and when a fire occurs inside, the temperature sensor detects a high temperature, and then directly controls the feeding pneumatic gate valve 4 and the discharging pneumatic gate valve 36 through the central control system or feeds back the high temperature to the feeding pneumatic gate valve 4 and the discharging pneumatic gate valve 36 through other subsystems to close the channels, and simultaneously notifies the systems to stop feeding, and then starts a fire extinguishing plan.

In conclusion, the invention innovatively adopts the material taking device 1 with the functions of material dispersion and material refining, the material conveying device 2 and the blanking device 3 to form a stokehole feeding system, so that materials can be continuously, stably and uniformly supplied to the incinerator for use, the incinerator is ensured to be fully combusted, the heat value is stable, the phenomenon of carbon monoxide leakage caused by smoke return of a material port can not occur even if a small amount of carbon monoxide is generated, and particularly, the system can stably run for a long period.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims (9)

1. The stokehole feeding system is characterized by comprising a material taking device, a material conveying device and a discharging device which are sequentially communicated, wherein the material taking device comprises a storage bin, a rotary material homogenizer which is communicated with a feed port of the storage bin and can feed materials to the interior of the storage bin in a 0-360-degree direction, and a planet material taking device which is partially arranged at the bottom of the interior of the storage bin;

the rotary material homogenizer comprises a material guide supporting seat arranged at a material inlet of the storage bin, a material guide homogenizing part supported on the material guide supporting seat and rotatably connected with the material guide supporting seat, and a rotary material homogenizing driving mechanism for driving the material guide homogenizing part to rotate;

the rotary material homogenizer also comprises a first rotary supporting body which is rotationally arranged on the material guiding supporting seat, the material guiding homogenizing part is rotationally connected with the material guiding supporting seat through the first rotary supporting body, and the rotary material homogenizing driving mechanism drives the first rotary supporting body to rotate so as to drive the material guiding homogenizing part to rotate;

the material guide supporting seat comprises an upper mounting seat, a lower mounting seat and an upper material guide cylinder communicated with the upper part of the upper mounting seat, and the first rotary supporting body is rotatably arranged at the lower part of the upper mounting seat; the material guiding and homogenizing part comprises a material guiding barrel arranged on the first rotary supporting body and a material guiding turning plate detachably connected with the lower end part of the material guiding barrel, and the material guiding turning plate is obliquely arranged and can adjust the inclination angle; the upper part of the lower mounting seat is sleeved on the material guide barrel, and the lower part of the lower mounting seat is communicated with a feed inlet of the storage bin;

the material taking device also comprises a plurality of material level sensors arranged on the upper part of the inner wall of the stock bin, and the plurality of material level sensors are uniformly distributed along the circumferential direction of the stock bin;

the material taking device further comprises a control system, a temperature sensor arranged at the upper part inside the stock bin and in communication connection with the control system, and a cooling device and a steam fire extinguishing device which are respectively partially arranged on the stock bin and in communication connection with the control system, wherein the material level sensor is in communication connection with the control system;

the planetary material taking device comprises a connecting seat which can rotate relative to the stock bin and is hollow in the middle, a spiral material taking device which is detachably arranged on the connecting seat and a planetary material taking driving mechanism which is used for driving the connecting seat to rotate so as to drive the spiral material taking device to rotate, wherein the spiral material taking device partially penetrates through the hollow middle of the connecting seat to extend downwards, and the stock bin is communicated with the outside through a discharge hole of the spiral material taking device;

the spiral material taking device comprises a supporting cylinder body, a spiral shaft, a transmission chain and a driving motor, wherein the supporting cylinder body is positioned in the hollow middle of the connecting seat, the spiral shaft can rotate around the axis of the spiral shaft, the transmission chain is in gear transmission with the spiral shaft, the driving motor is used for driving the transmission chain to rotate, the supporting cylinder body is provided with a feeding hole and a discharging hole, the feeding hole is communicated with the interior of the storage bin, the discharging hole is communicated with the exterior, one end of the spiral shaft is rotatably arranged on the inner wall of the supporting cylinder body, the other end of the spiral shaft extends out of the supporting cylinder body from the feeding hole to enter the storage bin, and the distance between the other end of the spiral shaft and the inner wall of the storage bin is 0.1-5 cm;

the material conveying device comprises a chain plate conveyor, a material buffer bin which is arranged at the feeding end of the chain plate conveyor and is communicated with the discharge hole of the spiral material taking device, a material stirring and homogenizing mechanism which is arranged at the material outlet of the material buffer bin, and a material cleaning mechanism which is arranged at the discharge end of the chain plate conveyor; wherein the material stirring and homogenizing mechanism comprises a material stirring and homogenizing roller which is arranged above the chain plate conveyor and is positioned at a material outlet of the material buffer bin and a material stirring and homogenizing driving component for driving the material stirring and homogenizing roller to rotate, the material stirring and homogenizing roller comprises a roller body which is rotatably arranged around the axis of the roller body and a plurality of groups of material stirring and homogenizing components which are arranged on the roller body and are sequentially arranged along the circumferential direction of the roller body, each group of material stirring and homogenizing components is formed by splicing at least 3 material stirring and homogenizing plates with different shapes along the length direction of the roller body, the shapes comprise length, width, extension direction and thickness, the length and the extension direction of at least two material stirring and homogenizing plates are respectively different, the surface of the spliced material stirring and homogenizing components is uneven, and a concave part is formed between two adjacent groups of material stirring and homogenizing components, wherein the opening of the recess rotated to the bottom of the roller body faces in the direction opposite to the running direction of the chain scraper conveyor.

2. The stokehole feeding system of claim 1, wherein the planetary material taking device further comprises a second rotary support body rotatably disposed on the storage bin, the connecting seat is fixedly disposed on the second rotary support body, and the planetary material taking driving mechanism drives the second rotary support body to perform a circular motion so as to drive the connecting seat to perform a rotary motion, thereby driving the spiral material taking device to perform a circular motion.

3. The stokehole feeding system according to claim 1, wherein a distance between the other end of the screw shaft and an inner wall of the silo is 0.1-3 cm.

4. The stokehole feed system of claim 1, wherein the support cylinder includes a partition plate for separating the drive chain from the discharge port and the feed port, the drive chain extending in an up-down direction, and the screw shaft extending in a horizontal direction.

5. The stokehole feeding system as claimed in claim 1, wherein the take-off device further comprises a plurality of explosion vents provided in the wall of the silo.

6. The stokehole feeding system of claim 1, wherein the material buffer storage bin comprises a buffer storage bin body erected above the feeding end of the chain plate conveyor, and a high material level detection sensor and a low material level detection sensor which are respectively arranged on the buffer storage bin body, the high material level detection sensor is arranged on the upper portion of the buffer storage bin body, the low material level detection sensor is arranged on the position, close to the material stirring and homogenizing roller, of the buffer storage bin body, and the buffer storage bin body and the chain plate conveyor form a space for buffering materials.

7. The stokehole feeding system as claimed in claim 1, wherein the material cleaning mechanism comprises a cleaning rotating shaft arranged to rotate around the axis thereof, a cleaning driving assembly for driving the cleaning rotating shaft to rotate, and a plurality of cleaning scraping plates arranged on the peripheral wall of the cleaning rotating shaft; the cleaning rotating shaft is located above the chain conveyor in an inclined mode, the extending direction of the cleaning rotating shaft is perpendicular to the running direction of the chain conveyor, the cleaning scraping plates are evenly distributed in the circumferential direction of the cleaning rotating shaft, and the extending direction of the cleaning scraping plates is perpendicular to the extending direction of the cleaning rotating shaft.

8. The stokehole feeding system according to claim 7, characterized in that the shortest distance between one end of the sweeping scraper plate away from the sweeping rotating shaft and the chain scraper conveyor is less than 3 cm.

9. The stokehole feeding system according to claim 8, characterized in that the shortest distance between one end of the sweeping scraper plate away from the sweeping rotating shaft and the chain scraper conveyor is less than 1 cm.

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