CN218065628U

CN218065628U - System for drying broken wood blocks by using waste heat and smoke of gas boiler

Info

Publication number: CN218065628U
Application number: CN202221726867.1U
Authority: CN
Inventors: 王殿林
Original assignee: Xishuangbanna Huixin New Energy Technology Co ltd
Current assignee: Xishuangbanna Huixin New Energy Technology Co ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-12-16
Anticipated expiration: 2032-07-06

Abstract

The utility model discloses a system for drying broken wood blocks by using waste heat and smoke of a gas boiler, which comprises a circular steel plate cylinder, a discharging mechanism, a smoke inlet pipe and a smoke outlet pipe; the inner part of the circular steel plate cylinder forms a sealed space with the ground, and a feed inlet, a flue gas outlet pipe and a discharge outlet are arranged on the circular steel plate cylinder; a conical orifice plate is arranged on the central ground of the sealed space, and a gap for mounting a discharging mechanism is reserved between the outer edge of the conical bottom of the conical orifice plate and the inner wall of the circular steel plate cylinder; the discharging mechanism can perform self-rotating motion relative to the conical orifice plate and the circular steel plate cylinder, so that the broken wood blocks generate centrifugal force and are discharged out of the circular steel plate cylinder through the discharging port; one end of the flue gas inlet pipe is connected with a boiler waste gas discharge port, and the other end of the flue gas inlet pipe extends to the bottom of the conical hole plate from the underground. The utility model discloses utilize gas boiler waste heat flue gas as the stoving heat source of shredded wood piece, have higher drying efficiency, business turn over material convenient and fast can practice thrift the stoving energy input, reduces the manufacturing cost of enterprise, and the reduction pollutant discharges.

Description

System for drying broken wood blocks by using waste heat and smoke of gas-fired boiler

Technical Field

The utility model relates to a timber drying equipment technical field, in particular to utilize system of gas boiler waste heat flue gas drying shredded wood piece.

Background

The drying of wood is a very important link in wood processing, and the wood is required to be dried in both wood making and charcoal making. In wood processing, the link with the largest energy consumption is the drying energy consumption, which accounts for about 65% of the energy consumption of the wood processing industry, and how to reduce the energy consumption of wood drying is an important subject of the wood processing industry. The traditional wood drying mostly adopts hot blast stoves, for example, a hot blast stove suitable for wood drying is disclosed in a patent document with publication number CN204665657U, a wood drying hot blast stove is disclosed in a patent document with publication number CN103075875B, and a wood drying device is disclosed in a patent document with publication number CN206056161U, wherein firewood and the like are consumed by the hot blast stove through combustion as a drying heat source, the traditional drying mode has the defects of large energy consumption, more pollutant emission, large energy input for drying and high production cost of enterprises.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the system for drying the wood chips by using the waste heat and the smoke of the gas-fired boiler is provided, and as boilers are arranged in most wood processing plants, the waste gas generated after the fuel is combusted in a hearth of the boilers has higher temperature, and can be used as an effective utilization means of a drying heat source; the temperature in the hearth is 900-1000 ℃, and the heat source can be used as a drying heat source of the wood chips after dust removal, desulfurization and flue gas pipeline transportation, and the flue gas still has a temperature of 45-80 ℃ at the moment, so that the wood chips can be effectively dried.

The utility model adopts the technical proposal that:

a system for drying broken wood blocks by using waste heat and smoke of a gas boiler comprises a circular steel plate cylinder, a discharging mechanism, a smoke inlet pipe and a smoke outlet pipe; the circular steel plate cylinder is placed on the ground, the bottom of the circular steel plate cylinder is open, a sealed space is formed between the circular steel plate cylinder and the ground, a feed inlet is formed in the top of the circular steel plate cylinder, a feeding door capable of opening or closing the feed inlet is rotatably installed at the feed inlet, a discharge outlet is formed in one side of the bottom of the circular steel plate cylinder, a discharge door capable of opening or closing the discharge outlet is rotatably installed at the discharge outlet, and a flue gas outlet pipe is further arranged in one side of the top of the circular steel plate cylinder; a conical orifice plate is arranged on the central ground of the sealed space, the conical top of the conical orifice plate is concentric with the feed inlet, a gap for installing a discharging mechanism is reserved between the outer edge of the conical bottom and the inner wall of the circular steel plate cylinder, and a plurality of smoke passing holes are formed in the surface of the plate body; the discharging mechanism can perform self-rotating motion relative to the conical orifice plate and the circular steel plate cylinder, so that the broken wood blocks generate centrifugal force and are discharged out of the circular steel plate cylinder through the discharging port; one end of the flue gas inlet pipe is connected with a boiler waste gas discharge port, and the other end of the flue gas inlet pipe extends to the bottom of the conical hole plate from the underground.

Further, the discharging mechanism comprises a motor, an output shaft, a bearing seat, a transmission gear, a rotating belt, an annular groove and a ball bearing; the output shaft is arranged on the bottom surface outside the circular steel plate cylinder through a bearing seat, one end of the output shaft is fixedly connected with the output shaft of the motor, the other end of the output shaft penetrates through the circular steel plate cylinder and extends to the installation gap of the discharging mechanism, and a transmission gear is arranged at the end head of the other end; the annular groove comprises an upper groove body and a lower groove body, the lower groove body is arranged on the bottom surface of the mounting gap of the discharging mechanism, the notch of the lower groove body is upward, and a plurality of ball bearings are arranged in the groove; the rotary belt is annular and is located above the ball bearing and the transmission gear, a groove body is fixedly installed on one side of the bottom of the rotary belt, a notch of the upper groove body is downward, the rotary belt is in contact with the ball bearing through the upper groove body, teeth which are annularly arranged with the transmission gear are arranged on the other side of the rotary belt, a rubber plate is overlapped with the outer edge of the conical bottom of the conical hole plate and is arranged on one side of the top of the rotary belt, and a rubber plate is overlapped with an annular extension plate on the inner wall of the circular steel plate cylinder body and is arranged on the other side of the top of the rotary belt.

Further, the bottom of the lower groove body is provided with an embedded part embedded underground.

Furthermore, a plurality of angle steel frames are distributed on the circumference of the rotating belt, and one side of each angle steel frame can scrape the wood chips on the pore plate with the cone.

Furthermore, the bottom of the cone orifice plate is erected on the ground through an installation frame, and the cone orifice plate is erected through the installation frame so that the outer edge of the cone bottom of the cone orifice plate is close to the rotating belt and the ground clearance is higher than the rotating belt.

Further, the system for drying the broken wood blocks by using the waste heat flue gas of the gas boiler also comprises a reverse air extraction device; the reverse air extraction device comprises an annular air extraction pipeline, a fan, a gate and a connecting air pipe; the annular air suction pipeline is buried underground below the conical pore plate, a plurality of branch air suction pipelines are arranged on the upper circumference of the annular air suction pipeline, one end of each branch air suction pipeline is communicated with the annular air suction pipeline, an air suction opening is formed in the other end of each branch air suction pipeline, a dust collection pit is arranged on the ground at the air suction opening, and the dust collection pit is close to the lap joint of the rotary belt and the outer edge of the conical bottom of the conical pore plate; the fan is arranged outside the circular steel plate cylinder and is connected with the annular air suction pipeline through a connecting air pipe, and a gate is arranged on the connecting air pipe.

The utility model has the advantages that:

this system for drying broken wood piece by utilizing gas boiler waste heat flue gas utilizes gas boiler waste heat flue gas as the stoving heat source of broken wood piece, when can realizing that gas boiler waste heat flue gas recycles, can practice thrift the stoving energy input, reduces the manufacturing cost of enterprise, and reduction pollutant discharges. The system for drying the broken wood blocks by using the waste heat and the flue gas of the gas boiler adopts the discharging mechanism consisting of the motor, the output shaft, the bearing seat, the transmission gear, the rotating belt, the annular groove, the ball bearing and the like, and the discharging mechanism is matched with the conical orifice plate to ensure that the feeding and the discharging are convenient and fast, so that the system has higher drying efficiency and good operation safety. The system for drying the broken wood blocks by using the waste heat and the flue gas of the gas boiler has the advantages of simple structure, convenience in installation and manufacture, low manufacturing cost and easiness in popularization and application.

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 for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the discharging mechanism of the present invention;

FIG. 3 is a schematic structural view of the reverse air-extracting device of the present invention;

in the drawings 1-3, 1-circular steel plate cylinder, 2-discharging mechanism, 3-flue gas inlet pipe, 4-flue gas outlet pipe, 5-sealed space, 6-feeding inlet, 7-feeding gate, 8-discharging gate, 9-discharging gate, 10-cone orifice plate, 11-flue gas through hole, 12-motor, 13-output shaft, 14-bearing seat, 15-transmission gear, 16-rotating belt, 17-annular groove, 18-ball bearing, 19-tooth, 20-rubber plate, 21-annular extension plate, 22-embedded part, 23-angle steel frame, 24-mounting rack, 25-annular suction pipeline, 26-fan, 27-gate, 28-connecting air pipe, 29-suction branch pipeline, 30-dust collection pit.

Detailed Description

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

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediary, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1:

the embodiment discloses a system for drying broken wood blocks by using waste heat and smoke of a gas boiler, and as shown in fig. 1, the system for drying broken wood blocks by using waste heat and smoke of a gas boiler comprises a round steel plate cylinder body 1, a discharging mechanism 2, a smoke inlet pipe 3 and a smoke outlet pipe 4.

As shown in fig. 1, circular steel sheet barrel 1 adopts the curved back welding of steel sheet nest to form the barrel, the barrel bottom opening, the top is sealed, place this circular steel sheet barrel 1 on ground, the barrel is inside to form confined space 5 with ground, it sets up feed inlet 6 to be equipped with center department at the top of barrel, and rotate through the hinge at feed inlet 6 and install the material loading door 7 that can open or close feed inlet 6, discharge gate 8 has been seted up to the lower part of barrel lateral wall in bottom one side of barrel promptly, and rotate through the hinge at discharge gate 8 and install the discharge door 9 that can open or close discharge gate 8, flue gas outlet duct 4 has still been seted up to barrel top one side, the outlet duct communicates with the barrel is inside. The cone orifice plate 10 is arranged on the central ground of the cylinder inner sealed space 5, the cone orifice plate 10 is made of steel plates into a cone shape, the bottom of the cone is not sealed, the bottom of the cone orifice plate 10 is erected on the ground through the mounting frame 24, meanwhile, the surface of the plate body is provided with the plurality of smoke passing holes 11, the cone top of the cone orifice plate 10 is concentric with the feed inlet 6, and a gap for mounting the discharging mechanism 2 is reserved between the outer edge of the cone bottom and the inner wall of the circular steel plate cylinder 1. One end of the flue gas inlet pipe 3 is connected with a boiler waste gas discharge port, the gas boiler is not shown in the figure, and the other end of the flue gas inlet pipe extends to the bottom of the conical hole plate 10 from the underground. The discharging mechanism 2 can perform self-rotation movement relative to the conical orifice plate 10 and the circular steel plate cylinder 1, so that the broken wood blocks generate centrifugal force and are discharged out of the circular steel plate cylinder 1 through the discharging hole 8.

Further, the present embodiment also provides a specific structure of the discharging mechanism 2, and as shown in fig. 2, the discharging mechanism 2 includes a motor 12, an output shaft 13, a bearing seat 14, a transmission gear 15, a rotating belt 16, an annular groove 17 and a ball bearing 18. The output shaft 13 is mounted on the bottom surface of the outside of the circular steel plate cylinder 1 through a bearing seat 14, one end of the output shaft 13 is fixedly connected with the output shaft of the motor 12, the other end of the output shaft 13 penetrates through the circular steel plate cylinder 1 and extends to the mounting gap of the discharging mechanism 2, and a transmission gear 15 is mounted at the end head of the other end of the output shaft 13; the annular groove 17 comprises an upper groove body and a lower groove body, the upper groove body and the lower groove body are both annular, the lower groove body is arranged on the bottom surface of the mounting gap of the discharging mechanism 2, the notch of the lower groove body is upward, and a plurality of ball bearings 18 are arranged in the groove; in order to ensure that the position of the lower tank body is fixed, an embedded part 22 embedded underground is arranged at the bottom of the lower tank body, a plate body welded with the annular groove 17 is arranged at the top of the embedded part 22, and a hook-shaped body embedded underground is arranged at the bottom of the embedded part 22; rotatory belt 16 is annular belt, rotatory belt 16 is located ball bearing 18 and drive gear 15's top, cell body on the fixed mounting of bottom one side of rotatory belt 16, it is downward to go up the cell body notch, rotatory belt 16 is through last cell body and ball bearing 18 contact, the bottom opposite side of rotatory belt 16 is equipped with the tooth 19 of arranging with drive gear 15 complex annular, top one side of rotatory belt 16 is equipped with and tapers end outer fringe overlap joint rubber slab 20 with cone orifice plate 10, the opposite side be equipped with circular steel sheet barrel 1 inner wall on annular extension board 21 lapped rubber slab 20. After the conical orifice plate 10 is erected by the mounting frame 24, the outer edge of the conical bottom of the conical orifice plate 10 is close to the rotating belt 16 and the ground clearance is slightly higher than the rotating belt 16.

The working principle of the system for drying the broken wood blocks by using the waste heat and the smoke of the gas boiler is as follows:

firstly, a feeding door 7 at a feeding hole 6 is rotated and opened, and broken wood blocks are thrown into the circular steel plate cylinder 1 through the feeding hole 6 and fall on the conical pore plate 10 and the rotary belt 16; at the moment, the loading door 7 is closed, so that a sealed space 5 is formed between the circular steel plate cylinder 1 and the ground, waste heat flue gas of the gas boiler is discharged into the circular steel plate cylinder 1 through the flue gas inlet pipe 3, the flue gas at the temperature of 45-80 ℃ has the bottom in the circular steel plate cylinder 1 to pass through the flue gas passing hole in the conical pore plate 10, and is discharged out of the circular steel plate cylinder 1 through the flue gas outlet pipe 4 on one side of the top of the circular steel plate cylinder 1; along with the continuous entering and the discharge of flue gas, make whole circular steel sheet barrel 1 inside temperature promote, and then accomplish and dry the shredded wood piece.

After drying a batch of wood chips, stopping supplying waste heat and smoke gas of a gas boiler, opening a discharge door 9 at a discharge port 8, starting a motor 12 of a discharge mechanism 2, and driving an output shaft 13 and a transmission gear 15 at the end of the output shaft 13 to rotate by the motor 12; one side of the bottom of the rotating belt 16 is in contact with the ball bearing 18, and the other side of the bottom of the rotating belt 16 is provided with the teeth 19 which are matched with the transmission gear 15 and are arranged annularly, so that the rotating belt 16 performs self-rotating motion relative to the conical orifice plate 10 and the circular steel plate cylinder 1, and the broken wood blocks generate centrifugal force and are discharged out of the circular steel plate cylinder 1 through the discharge hole 8; because one side of the top of the rotating belt 16 is lapped with the outer edge of the cone bottom of the cone orifice plate 10 through the rubber plate 20, the other side is lapped with the annular extension plate 21 on the inner wall of the circular steel plate cylinder 1 through the rubber plate 20, and in addition, due to the guiding effect of the annular groove 17, the relative position of the rotating belt 16 cannot be changed when the rotating belt does self-rotation motion.

Further, as a preferred technical solution of this embodiment, in order to prevent the wood chips from being accumulated or remaining on the conical hole plate 10 during the discharging process, a plurality of angle steel frames 23 are circumferentially distributed on the rotating belt 16, and the bottoms of the angle steel frames 23 are fixedly connected with the rotating belt 16; the shredded wood piece of taking cone orifice plate 10 awl bottom edge can be scraped through one side of angle steelframe 23, makes the shredded wood piece of cone orifice plate 10 awl bottom edge slide to rotatory belt 16 on, the shredded wood piece of cone orifice plate 10 awl top department slides to awl bottom edge simultaneously.

Example 2:

on the basis of embodiment 1, the system for drying the wood particles by using the flue gas generated by the waste heat of the gas boiler further comprises a reverse air extraction device, as shown in fig. 1 and 3, wherein the reverse air extraction device comprises an annular air extraction pipeline 25, a fan 26, a gate 27 and a connecting air pipe 28. Specifically, the annular air extraction pipeline 25 is buried underground below the conical pore plate 10, a plurality of branch air extraction pipelines 29 are circumferentially arranged on the annular air extraction pipe, one end of each branch air extraction pipeline 29 is communicated with the annular air extraction pipeline 25, an air extraction opening is formed at the other end of each branch air extraction pipeline, a dust collection pit 30 is arranged on the ground at the air extraction opening, and the dust collection pit 30 is close to the lap joint of the rotary belt 16 and the outer edge of the conical bottom of the conical pore plate 10; the fan 26 is arranged outside the circular steel plate cylinder body 1, the fan 26 is connected with the annular air suction pipeline 25 through the connecting air pipe 28, and the connecting air pipe 28 is provided with a gate 27.

The air extraction device is used for regularly sucking and cleaning dust entering the circular steel plate cylinder 1, firstly, the gate 27 on the connecting air pipe 28 is opened during cleaning, then the fan 26 is driven, after the fan 26 is driven to be started, the air extraction opening of the air extraction branch pipeline 29 forms suction force, and the dust in the dust collection pit 30 is discharged out of the circular steel plate cylinder 1 through the air extraction branch pipeline 29, the annular air extraction pipe and the connecting air pipe 28 in sequence.

It should be noted that the gas boiler, the motor, the fan, and the gate mentioned in the above embodiments all belong to the prior art, and are commercially available, and the detailed structure, the operating principle, the circuit control, and the like thereof are not described herein again.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a system for utilize gas boiler waste heat flue gas to dry shredded wood piece which characterized in that: the system for drying the wood chips by using the waste heat flue gas of the gas boiler comprises a circular steel plate cylinder, a discharging mechanism, a flue gas inlet pipe and a flue gas outlet pipe; the circular steel plate cylinder is placed on the ground, the bottom of the circular steel plate cylinder is open, a sealed space is formed between the circular steel plate cylinder and the ground, a feed inlet is formed in the top of the circular steel plate cylinder, a feeding door capable of opening or closing the feed inlet is rotatably installed at the feed inlet, a discharge outlet is formed in one side of the bottom of the circular steel plate cylinder, a discharge door capable of opening or closing the discharge outlet is rotatably installed at the discharge outlet, and a flue gas outlet pipe is further arranged in one side of the top of the circular steel plate cylinder; a conical orifice plate is arranged on the central ground of the sealed space, the conical top of the conical orifice plate is concentric with the feed inlet, a gap for installing a discharging mechanism is reserved between the outer edge of the conical bottom and the inner wall of the circular steel plate cylinder, and a plurality of smoke passing holes are formed in the surface of the plate body; the discharging mechanism can perform self-rotation movement relative to the conical hole plate and the circular steel plate cylinder, so that the crushed wood blocks generate centrifugal force and are discharged out of the circular steel plate cylinder through the discharging hole; one end of the flue gas inlet pipe is connected with a boiler waste gas discharge port, and the other end of the flue gas inlet pipe extends to the bottom of the conical hole plate from the underground.

2. The system for drying the wood particles by using the flue gas generated by the waste heat of the gas-fired boiler as claimed in claim 1, wherein: the discharging mechanism comprises a motor, an output shaft, a bearing seat, a transmission gear, a rotating belt, an annular groove and a ball bearing; the output shaft is arranged on the bottom surface outside the circular steel plate cylinder through a bearing seat, one end of the output shaft is fixedly connected with the output shaft of the motor, the other end of the output shaft penetrates through the circular steel plate cylinder and extends to the installation gap of the discharging mechanism, and a transmission gear is arranged at the end head of the other end; the annular groove comprises an upper groove body and a lower groove body, the lower groove body is arranged on the bottom surface of the mounting gap of the discharging mechanism, the notch of the lower groove body is upward, and a plurality of ball bearings are arranged in the groove; the rotary belt is annular and is located above the ball bearing and the transmission gear, a groove body is fixedly installed on one side of the bottom of the rotary belt, a notch of the upper groove body is downward, the rotary belt is in contact with the ball bearing through the upper groove body, teeth which are annularly arranged with the transmission gear are arranged on the other side of the rotary belt, a rubber plate is overlapped with the outer edge of the conical bottom of the conical hole plate and is arranged on one side of the top of the rotary belt, and a rubber plate is overlapped with an annular extension plate on the inner wall of the circular steel plate cylinder body and is arranged on the other side of the top of the rotary belt.

3. The system for drying the wood particles by using the flue gas generated by the waste heat of the gas-fired boiler as claimed in claim 2, wherein: and an embedded part embedded underground is arranged at the bottom of the lower groove body.

4. The system for drying the wood particles by using the flue gas generated by the waste heat of the gas boiler as claimed in claim 2, wherein: a plurality of angle steel frames are circumferentially distributed on the rotary belt, and one side of each angle steel frame can scrape broken wood blocks on the hole plate with the cone.

5. The system for drying the wood particles by using the flue gas generated by the waste heat of the gas boiler as claimed in claim 2, wherein: the bottom of the cone orifice plate is erected on the ground through the mounting frame, and the cone orifice plate is erected through the mounting frame to enable the outer edge of the cone bottom to be close to the rotating belt and the ground clearance to be higher than the rotating belt.

6. The system for drying the wood particles by using the flue gas generated by the waste heat of the gas-fired boiler as claimed in claim 2, wherein: the system for drying the broken wood blocks by using the waste heat and the flue gas of the gas boiler also comprises a reverse air extractor; the reverse air extraction device comprises an annular air extraction pipeline, a fan, a gate and a connecting air pipe; the annular air suction pipeline is buried underground below the conical pore plate, a plurality of branch air suction pipelines are arranged on the upper circumference of the annular air suction pipeline, one end of each branch air suction pipeline is communicated with the annular air suction pipeline, an air suction opening is formed in the other end of each branch air suction pipeline, a dust collection pit is arranged on the ground of the air suction opening, and the dust collection pit is close to the lap joint of the rotary belt and the outer edge of the conical bottom of the conical pore plate; the fan is arranged outside the circular steel plate cylinder and is connected with the annular air suction pipeline through a connecting air pipe, and a gate is arranged on the connecting air pipe.