CN219341018U

CN219341018U - Stokehold conveying and dust removing system

Info

Publication number: CN219341018U
Application number: CN202320376409.8U
Authority: CN
Inventors: 朱万才
Original assignee: Jiangsu Deerrui Environmental Protection Machinery Co ltd
Current assignee: Jiangsu Deerrui Environmental Protection Machinery Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-07-14
Anticipated expiration: 2033-03-02

Abstract

The utility model relates to the technical field of material conveying, in particular to a stokehold conveying and dedusting system, which comprises a feed bin, a feeding component for feeding straws into the feed bin, a feeding component for conveying straws in the feed bin into an incinerator and a dedusting component arranged at a feed port of the feed bin, wherein the feeding component comprises a primary screw conveyor communicated with a discharge port of the feed bin and a secondary screw conveyor communicated with a discharge port of the primary screw conveyor, the discharge port of the secondary screw conveyor is communicated with the feed port of the incinerator, and the dedusting component comprises a primary deduster communicated with the feed port of the incinerator, a secondary deduster for carrying out dedusting on the primary deduster and a centrifugal fan communicated with the secondary deduster, and an ash outlet of the primary deduster is communicated with a slow bin; the utility model provides a stokehold conveying and dedusting system which has the advantages of simple structural design, good dedusting effect, difficult occurrence of blocking and tempering prevention.

Description

Stokehold conveying and dust removing system

Technical Field

The utility model relates to the technical field of material conveying, in particular to a stokehold conveying and dedusting system.

Background

In agricultural processes, crops produce large amounts of waste such as rice hulls, straw, and rice straw. Wherein, the straw is a good clean renewable energy source and has better economic, ecological and social benefits. The straw power generation is a power generation mode taking crop straw as main fuel, and is divided into straw gasification power generation and straw combustion power generation. In the process of straw combustion power generation, the step of feeding straw into an incinerator can be involved.

At present, most of conveying equipment for conveying straws into an incinerator does not perform dust removal, and a large amount of dust still escapes, so that the working environment is influenced, and the environment-friendly straw incinerator does not meet the environmental protection requirement. Meanwhile, the conventional conveying equipment is easy to cause material blockage in the process of conveying the straws to the incinerator, so that the normal work of the incinerator is influenced, and the normal power generation is influenced.

Disclosure of Invention

The utility model aims to solve the technical problems that: overcomes the defects in the prior art, and provides a stokehold conveying and dust removing system which has simple structural design, good dust removing effect, difficult occurrence of blocking and tempering prevention.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a stokehold is carried and dust pelletizing system, includes the feed bin, sends the straw into the feeding subassembly of feed bin, carries the feed subassembly and the dust removal subassembly of setting in the feed bin feed inlet in burning furnace to the straw in the feed bin, the feed subassembly include with the one-level screw conveyer of feed bin discharge gate intercommunication and with the second grade screw conveyer of one-level screw conveyer discharge gate intercommunication, the discharge gate of second grade screw conveyer communicates with the feed inlet of burning furnace, the dust removal subassembly includes the one-level dust remover with the feed bin feed inlet intercommunication, carries out the secondary dust remover that removes dust once more to the one-level dust remover and the centrifugal fan with the secondary dust remover intercommunication, the ash outlet intercommunication of one-level dust remover has the buffering storehouse, the ash outlet of secondary dust remover passes through screw conveyer and the intercommunication of buffering storehouse.

Further, the dust inlet of the primary dust remover collects dust at the feed inlet of the storage bin through the dust hood.

Further, a silencer is arranged at the output end of the centrifugal fan.

Further, a stirring and scattering device is arranged in the discharge hole of the storage bin and comprises a rotating shaft rotatably arranged in the discharge hole of the storage bin, stirring rods uniformly distributed on the peripheral wall of the rotating shaft and a stirring motor for driving the rotating shaft to rotate, and the stirring motor is arranged on the outer wall of the storage bin.

Further, the primary screw conveyor comprises a primary shell, a screw shaft coaxially arranged in the primary shell, a screw blade spirally arranged on the screw shaft and a primary motor for driving the screw shaft to rotate, a feed inlet of the primary shell is communicated with a discharge outlet of the storage bin, and the discharge outlet of the primary shell is communicated with the secondary screw conveyor.

Further, the secondary screw conveyor comprises a secondary shell, shaftless screw blades coaxially arranged in the secondary shell and a secondary motor for driving the shaftless screw blades to rotate, wherein a feed inlet of the secondary shell is communicated with a discharge outlet of the primary shell through a chute, and the discharge outlet of the secondary shell is communicated with a feed inlet of the incinerator.

Further, the distance between adjacent blades on the shaftless spiral blade gradually increases along with the conveying direction.

Further, a pressurizing rotary discharge valve is arranged in the middle of the chute, and an air inlet is formed in the pressurizing rotary discharge valve.

Further, an expansion joint is arranged between the material sliding pipe and the feed inlet of the secondary shell and is used for compensating axial displacement of the material sliding pipe.

Further, a gate valve is arranged on the chute and is positioned between the pressurizing rotary discharge valve and the expansion joint.

The beneficial effects of the utility model are as follows:

(1) The two-stage dust collectors are arranged, so that dust generated in the straw conveying process is effectively collected, the dust is prevented from escaping, a good working environment is guaranteed, the environment-friendly requirement is met, and meanwhile, due to the arrangement of the two-stage screw conveyor, the blockage in the straw conveying process to the incinerator is avoided, and the normal operation of the incinerator is guaranteed;

(2) According to the utility model, through the arrangement of the silencer, the noise of the centrifugal fan during working is reduced, so that the working environment is further improved;

(3) According to the utility model, through the arrangement of the stirring and scattering device, the straws in the bin are scattered before entering the feeding assembly, so that the occurrence of blockage in the process of conveying the straws to the incinerator is further avoided;

(4) According to the utility model, through the arrangement of the pressurizing rotary discharge valve, the interior of the chute is inflated and pressurized, and the straws in the chute are pushed to fall down, so that the straws are prevented from being blocked in the chute;

(5) The utility model plays a role of partition through the arrangement of the gate valve, and prevents the influence of tempering on the whole system.

Drawings

The utility model will be further described with reference to the drawings and embodiments.

FIG. 1 is a front view of the present utility model;

FIG. 2 is a side view of the present utility model;

FIG. 3 is a schematic view of a dust extraction assembly of the present utility model;

fig. 4 is an enlarged view of a portion a in fig. 2;

fig. 5 is an enlarged view of the portion B in fig. 2.

In the figure: 1. a storage bin; 2. a feeding assembly; 3. a feed assembly; 3a, a primary screw conveyor; 3a1, a primary housing; 3a2, a screw shaft; 3a3, helical blades; 3a4, a primary motor; 3b, a secondary screw conveyor; 3b1, a secondary housing; 3b2, shaftless helical blades; 3b3, a secondary motor; 4. a dust removal assembly; 4a, a primary dust remover; 4b, a secondary dust remover; 4c, a centrifugal fan; 5. a buffering bin; 6. a screw conveyor; 7. a dust hood; 8. a muffler; 9. a stirring and scattering device; 9a, a rotating shaft; 9b, a stirring rod; 9c, a stirring motor; 10. a material sliding pipe; 11. a pressurized rotary discharge valve; 12. an expansion joint; 13. a gate valve; 14. an air suction pipe; 15. an ash discharge valve.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings. These drawings are simplified schematic views illustrating the basic structure of the present utility model by way of illustration only, and thus show only the constitution related to the present utility model.

As shown in fig. 1-3, a stokehold conveying and dedusting system comprises a bin 1, a feeding assembly 2 for feeding straws into the bin 1, a feeding assembly 3 for conveying the straws in the bin 1 into an incinerator, and a dedusting assembly 4 arranged at a feed port of the bin 1, wherein the feeding assembly 3 comprises a primary screw conveyor 3a communicated with a discharge port of the bin 1 and a secondary screw conveyor 3b communicated with a discharge port of the primary screw conveyor 3a, the discharge port of the secondary screw conveyor 3b is communicated with the feed port of the incinerator, the dedusting assembly 4 comprises a primary dust remover 4a communicated with the feed port of the bin 1, a secondary dust remover 4b for removing dust again from the primary dust remover 4a, and a centrifugal fan 4c communicated with the secondary dust remover 4b, an ash outlet of the primary dust remover 4a is communicated with a buffer bin 5, and an ash outlet of the secondary dust remover 4b is communicated with the buffer bin 5 through a screw conveyor 6. Through the setting of two-stage dust remover, the effectual dust of collecting straw transportation in-process production avoids the dust to outwards ease to guarantee good operational environment, and reach the environmental protection requirement, two-stage screw conveyer's setting simultaneously has avoided appearing blockking up at the in-process that the straw was carried to the incinerator, has guaranteed the normal work of incinerator. Specifically, the two groups of feed bins 1 are arranged, the feeding assembly 2 is a feeding belt conveyor, the discharge hole of the feeding belt conveyor is positioned above the feed inlet of the feed bin 1, the two groups of feed bins 1 are respectively arranged corresponding to the feed bins 3 and the dust removal assembly 4, each group of feed bins 3 is provided with 4 primary screw conveyors 3a and 2 secondary screw conveyors 3b, and each 2 primary screw conveyors 3a share 1 chute 10, so that the design ensures the conveying efficiency of straws; the primary dust remover 4a is a cyclone collector, and the secondary dust remover 4b is a pulse bag dust remover; the screw conveyor 6 is of the prior art and its specific structure will not be described in detail here.

As shown in fig. 3, the dust inlet of the primary dust collector 4a collects dust at the feed inlet of the storage bin 1 through the dust hood 7, and the dust collection area at the feed inlet of the storage bin 1 is enlarged and the dust collection effect is improved due to the arrangement of the dust hood 7. Specifically, the ash inlet of the primary dust collector 4a is communicated with the dust hood 7 through an air suction pipe 14, and the ash inlet of the secondary dust collector 4b is communicated with the top end of the primary dust collector 4a through the air suction pipe 14.

As shown in fig. 3, the muffler 8 is installed at the output end of the centrifugal fan 4c, and the muffler 8 reduces noise generated when the centrifugal fan 4c works, thereby further improving the working environment.

As shown in fig. 1 and 4, a stirring and scattering device 9 is installed in a discharge hole of the storage bin 1, the stirring and scattering device 9 comprises a rotating shaft 9a rotatably installed in the discharge hole of the storage bin 1, stirring rods 9b uniformly distributed on the peripheral wall of the rotating shaft 9a, and a stirring motor 9c for driving the rotating shaft 9a to rotate, and the stirring motor 9c is installed on the outer wall of the storage bin 1. Through setting up of dialling material and scattering ware 9, break up before the straw in feed bin 1 gets into feed subassembly 3, further avoided appearing blocking up in the straw in-process of carrying to the incinerator. Specifically, there are two stirring and scattering devices 9 in each bin 1.

As shown in fig. 4, the primary screw conveyor 3a includes a primary housing 3a1, a screw shaft 3a2 coaxially disposed in the primary housing 3a1, a screw blade 3a3 spirally disposed on the screw shaft 3a2, and a primary motor 3a4 for driving the screw shaft 3a2 to rotate, wherein a feed inlet of the primary housing 3a1 is communicated with a discharge outlet of the silo 1, and a discharge outlet of the primary housing 3a1 is communicated with the secondary screw conveyor 3 b. Through the arrangement of the screw shaft 3a2 and the screw blades 3a3, the straws are extruded and crushed and are uniformly conveyed to the chute 10, so that the possibility of blockage of the straws in the subsequent conveying process is reduced. Specifically, the primary screw conveyor 3a is arranged on a steel structure platform, and guardrails are arranged around the steel structure platform to protect the safety of maintenance personnel.

As shown in fig. 5, the secondary screw conveyor 3b includes a secondary housing 3b1, a shaftless screw blade 3b2 coaxially disposed in the secondary housing 3b1, and a secondary motor 3b3 for driving the shaftless screw blade 3b2 to rotate, wherein a feed inlet of the secondary housing 3b1 is communicated with a discharge outlet of the primary housing 3a1 through a chute 10, and a discharge outlet of the secondary housing 3b1 is communicated with a feed inlet of the incinerator. By the arrangement of the shaftless spiral blade 3b2, the straw is not easy to be blocked in the secondary shell 3b 1. Specifically, the distance between adjacent blades on the shaftless spiral blade 3b2 gradually increases along with the conveying direction, so that the material containing space between the adjacent blades is increased, and the blocking caused by the accumulation of the straws in the secondary shell 3b1 is further avoided.

As shown in fig. 2, a pressurizing rotary discharge valve 11 is installed in the middle of the chute 10, and an air inlet is formed in the pressurizing rotary discharge valve 11. Through the arrangement of the pressurizing rotary discharge valve 11, the interior of the chute 10 is inflated and pressurized, and the straws in the chute 10 are pushed to fall down, so that the straws are prevented from being blocked in the chute 10.

As shown in fig. 1, an expansion joint 12 is arranged between the chute 10 and the feed inlet of the secondary housing 1b1 for compensating the axial displacement of the chute 10, thereby prolonging the service life of the chute 10.

As shown in fig. 1, a gate valve 13 is mounted on the chute 10, and the gate valve 13 is located between the pressurizing rotary discharge valve 11 and the expansion joint 12. Through the arrangement of the gate valve 13, the effect of partition is achieved, and the influence of tempering on the whole system is prevented.

As shown in fig. 3, in order to control the on-off of the ash outlet of the primary dust remover 4a and the buffer bin 5, and the ash outlet of the secondary dust remover 4b and the screw conveyor 6, the ash outlet of the primary dust remover 4a and the ash outlet of the secondary dust remover 4b are respectively provided with a rotary ash discharge valve 15.

During operation, straw is conveyed into the storage bin 1 through the feeding component 2, in the process, the first-stage dust remover 4a collects dust generated in the storage bin 1 through the dust hood 7, a part of dust falls into the buffer storage bin 5 under the action of self gravity, a part of dust enters the second-stage dust remover 4b under the action of the centrifugal fan 4c, the dust collected in the second-stage dust remover 4b is conveyed into the buffer storage bin 5 through the screw conveyor 6, and finally the dust in the buffer storage bin 5 falls into the collecting bag (not shown in the figure) from the ash outlet thereof.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a stokehold is carried and dust pelletizing system, includes feed bin (1), sends the straw into feeding subassembly (2) of feed bin (1), carries feed subassembly (3) and dust removal subassembly (4) of setting in feed bin (1) feed inlet in burning furnace to straw in feed bin (1), its characterized in that: the feeding assembly (3) comprises a primary screw conveyor (3 a) communicated with a discharge hole of the storage bin (1) and a secondary screw conveyor (3 b) communicated with the discharge hole of the primary screw conveyor (3 a), the discharge hole of the secondary screw conveyor (3 b) is communicated with a feed inlet of the incinerator, the dust removing assembly (4) comprises a primary dust remover (4 a) communicated with the feed inlet of the storage bin (1), a secondary dust remover (4 b) for removing dust again from the primary dust remover (4 a) and a centrifugal fan (4 c) communicated with the secondary dust remover (4 b), a buffer storage bin (5) is communicated with an ash outlet of the primary dust remover (4 a), and an ash outlet of the secondary dust remover (4 b) is communicated with the buffer storage bin (5) through the screw conveyor (6).

2. The forehearth conveying and dust removal system of claim 1, wherein: the dust inlet of the primary dust remover (4 a) collects dust at the feed inlet of the storage bin (1) through the dust hood (7).

3. The forehearth conveying and dust removal system of claim 2, wherein: and a silencer (8) is arranged at the output end of the centrifugal fan (4 c).

4. The forehearth conveying and dust removal system of claim 1, wherein: the automatic stirring and stirring device is characterized in that a stirring and stirring device (9) is arranged in a discharge hole of the storage bin (1), the stirring and stirring device (9) comprises a rotating shaft (9 a) which is rotatably arranged in the discharge hole of the storage bin (1), stirring rods (9 b) which are uniformly distributed on the outer peripheral wall of the rotating shaft (9 a) and a stirring motor (9 c) which drives the rotating shaft (9 a) to rotate, and the stirring motor (9 c) is arranged on the outer wall of the storage bin (1).

5. The forehearth conveying and dust removal system of claim 4, wherein: the one-level screw conveyor (3 a) comprises a one-level shell (3 a 1), a screw shaft (3 a 2) coaxially arranged in the one-level shell (3 a 1), a screw blade (3 a 3) spirally arranged on the screw shaft (3 a 2) and a one-level motor (3 a 4) for driving the screw shaft (3 a 2) to rotate, a feed inlet of the one-level shell (3 a 1) is communicated with a discharge outlet of the storage bin (1), and a discharge outlet of the one-level shell (3 a 1) is communicated with the two-level screw conveyor (3 b).

6. The forehearth conveying and dust removal system of claim 5, wherein: the secondary screw conveyor (3 b) comprises a secondary shell (3 b 1), a shaftless screw blade (3 b 2) coaxially arranged in the secondary shell (3 b 1) and a secondary motor (3 b 3) for driving the shaftless screw blade (3 b 2) to rotate, wherein a feed inlet of the secondary shell (3 b 1) is communicated with a discharge outlet of the primary shell (3 a 1) through a chute (10), and a discharge outlet of the secondary shell (3 b 1) is communicated with a feed inlet of the incinerator.

7. The forehearth conveying and dust removal system of claim 6, wherein: the distance between adjacent blades on the shaftless spiral blade (3 b 2) gradually increases along with the conveying direction.

8. The forehearth conveying and dust removal system of claim 6 or 7, wherein: the middle part of the chute (10) is provided with a pressurizing rotary discharge valve (11), and the pressurizing rotary discharge valve (11) is provided with an air inlet.

9. The forehearth conveying and dust removal system of claim 8, wherein: an expansion joint (12) is arranged between the material sliding pipe (10) and the feed inlet of the secondary shell (3 b 1) and is used for compensating axial displacement of the material sliding pipe (10).

10. The forehearth conveying and dust removal system of claim 9, wherein: the chute (10) is provided with a gate valve (13), and the gate valve (13) is positioned between the pressurizing rotary discharge valve (11) and the expansion joint (12).