CN214501190U

CN214501190U - Biomass steam boiler

Info

Publication number: CN214501190U
Application number: CN202023284271.4U
Authority: CN
Inventors: 王月娥; 张平; 王鹏
Original assignee: Henan Siwei Boiler Manufacturing Co ltd
Current assignee: Henan Siwei Boiler Manufacturing Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-26
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a biomass steam boiler, which comprises a boiler body and an economizer; a coiled pipe is arranged inside the economizer; an ash hopper is arranged at the bottom of the coal economizer; an ash blowing hole is formed in the top of the economizer; a filter screen plate is obliquely arranged in the ash hopper; the filter screen plate divides the ash bucket into an upper cavity and a lower cavity from top to bottom; the bottom of the ash bucket is also provided with a dust suction box; the dust collection box is communicated with the lower cavity; a water inlet is formed in one side wall of the dust collection box; a water outlet is formed in the other side wall of the dust collection box; an air outlet pipe is connected to one side wall of the ash bucket; the air outlet pipe is connected with the cavity of the lower cavity; a control valve is arranged on the air outlet pipe; the utility model discloses the technical scheme who takes has solved current biomass boiler's economizer can not lead to the inside problem that also causes the deposition easily and block up of economizer to the better filtration of cigarette ash with clear away.

Description

Biomass steam boiler

Technical Field

The utility model relates to a gas boiler technical field, concretely relates to biomass steam boiler.

Background

The biomass boiler is a kind of boiler, and a boiler using biomass energy as fuel is called a biomass boiler and is divided into a biomass steam boiler, a biomass hot water boiler, a biomass hot blast stove, a biomass heat-conducting oil furnace, a vertical biomass boiler, a horizontal biomass boiler and the like. The existing biomass boiler generally comprises a boiler body and an economizer; the economizer is generally vertically arranged, and the air inlet end is arranged at the upper end and connected with the boiler body; the gas outlet end of the economizer is arranged at the bottom; a serpentine coil is arranged in the economizer so as to be convenient for utilizing the waste heat of the high-temperature tail gas; however, when the biomass fuel is combusted in the biomass steam boiler, more soot is easily generated, and when the soot is serious, pipelines are easily generated, so that the boiler cannot normally operate, and the safe operation and the economic operation of the boiler are seriously influenced; the existing economizer of the biomass boiler can not filter and remove soot well, so that the problem of soot accumulation and blockage in the economizer can be easily caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a biomass steam boiler solves current biomass boiler's economizer and can not lead to the inside problem that also causes the deposition easily and block up of economizer to the better filtration of cigarette ash and clear away.

In order to solve the technical problem, the utility model adopts the following technical scheme: a biomass steam boiler comprises a boiler body and an economizer; a coiled pipe is arranged inside the economizer; an ash hopper is arranged at the bottom of the coal economizer; an ash blowing hole is formed in the top of the economizer; a filter screen plate is obliquely arranged in the ash hopper; the filter screen plate divides the ash bucket into an upper cavity and a lower cavity from top to bottom; the bottom of the ash bucket is also provided with a dust suction box; the dust collection box is communicated with the lower cavity; a water inlet is formed in one side wall of the dust collection box; a water outlet is formed in the other side wall of the dust collection box; an air outlet pipe is connected to one side wall of the ash bucket; the air outlet pipe is connected with the cavity of the lower cavity; a control valve is arranged on the air outlet pipe;

furthermore, the edges of the upper end and the lower end of the filter screen plate are provided with angle steels; the inner walls of the two sides of the ash hopper are provided with support rails corresponding to the angle steel; the angle steel slides on the support rail; the end part of the angle steel is provided with a limiting block; the end part of the supporting rail is provided with a limiting groove corresponding to the limiting block;

furthermore, a sealing door is arranged on the side wall of the ash bucket; the filter screen plate is slidingly drawn in the ash bucket through the sealing door;

furthermore, a flow baffle is arranged in the economizer at intervals of the coiled pipe; the flow baffles are arranged on the inner walls of the two sides of the economizer in a vertically staggered manner; dust catching nets are arranged on the flow baffle at intervals;

further, the side wall of the economizer is provided with a mounting groove corresponding to the flow baffle; the flow baffle is movably arranged in the economizer through the mounting groove; damping grooves are formed in the surfaces of the two sides of the flow baffle; the damping groove is internally connected with a damping block through an elastic piece;

further, a heat insulation sleeve is sleeved on the outer wall of the economizer; a clamping groove is formed in the side wall of the heat insulation sleeve corresponding to the damping block; the damping block is movably connected with the clamping groove;

further, the damping block is a wedge-shaped block; a clamping hook is arranged at the higher end of the damping block; a boss is arranged on the inner wall of one side of the clamping groove corresponding to the clamping hook;

a mounting plate is arranged at one end of the flow baffle, which is close to the damping groove; the mounting plate is connected with the outer wall of the heat-insulating sleeve; and a sealing ring is also arranged at the edge of the mounting plate.

Compared with the prior art, the beneficial effects of the utility model are one of following at least:

1. the top of the economizer is provided with a soot blowing hole, when the economizer is used for cleaning and maintenance for a period of time, the soot blowing hole is connected with a soot blowing device, air is blown in from top to bottom, intermittently or continuously through the soot blowing hole, and soot in the economizer is blown downwards, so that the soot in the economizer can be reduced, and the occurrence of blockage in the economizer can be reduced;

2. the ash hopper is arranged at the bottom of the economizer, so that the ash can be filtered and collected, and the effect of removing the ash can be improved;

3. the filter screen plate is provided with a filter screen, and when the boiler normally operates, the filter screen plate in the ash bucket can capture the ash in the tail gas; the tail gas filtered by the filter screen plate is discharged out of the economizer through the gas outlet pipe, so that the content of the soot in the tail gas discharged through the ash bucket is reduced; after the filter screen plate is used for a period of time, the control valve controls the internal pressure of the economizer, and the soot blowing device is connected to the soot blowing hole to blow soot downwards, so that the soot collected on the filter screen plate is blown downwards, soot accumulated on the filter screen plate is cleaned, the service cycle of the filter screen plate is prolonged, and the filtering effect of the filter screen plate is improved;

4. set up the suction box bottom the ash bucket, the cleaning water is equipped with through water inlet and delivery port in the suction box, when blowing the ash cleanness to the economizer, hydroenergy in the suction box enough absorbs from the filter plate blow down and fall into the suction box in, sewage passes through the delivery port discharge again, be favorable to realizing the clearance to the filter plate, be favorable to removing the cigarette ash on the filter plate, be favorable to improving life cycle, be favorable to reducing the appearance of the inside jam condition of economizer.

Drawings

Fig. 1 is a front view structure diagram of the present invention.

Fig. 2 is a schematic front view of the economizer.

Fig. 3 is a side view of the economizer.

Fig. 4 is a schematic view of a structure of a screen plate.

Fig. 5 is a schematic view of a part of the structure of the present invention.

In the drawings: 1. a boiler body; 2. a coal economizer; 3. an ash hopper; 4. blowing ash holes; 5. a filter screen plate; 6. a dust collection box; 7. a water inlet; 8. a water outlet; 9. an air outlet pipe; 10. angle steel; 11. supporting a rail; 13. a flow baffle plate; mounting grooves; 16. a damping groove; 17. a damper block; 18. an elastic member; 19. a thermal insulation sleeve; 20. a card slot; 21. a hook is clamped; 22. and (4) a boss.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1: as shown in fig. 1 to 5, a biomass steam boiler comprises a boiler body 1 and an economizer 2; a coiled pipe is arranged inside the economizer 2; an ash hopper 3 is arranged at the bottom of the coal economizer 2; the top of the economizer 2 is provided with an ash blowing hole 4; a filter screen plate 5 is obliquely arranged in the ash hopper 3; the filter screen plate 5 divides the ash bucket 3 into an upper cavity and a lower cavity from top to bottom; the bottom of the ash bucket 3 is also provided with a dust suction box 6; the dust collection box 6 is communicated with the lower cavity; a water inlet 7 is formed in one side wall of the dust collection box 6; a water outlet 8 is formed in the other side wall of the dust collection box 6; an air outlet pipe 9 is connected to one side wall of the ash bucket 3; the air outlet pipe 9 is connected with the lower cavity; a control valve is arranged on the air outlet pipe 9; in the embodiment, the boiler body 1, the economizer 2 and the coiled pipe are made of conventional materials with certain mechanical strength, are of conventional commercially available structures and are installed and connected, and any reasonable structure and installation mode can be selected according to needs; in the embodiment, the conventional filter screen with certain mechanical strength and heart resistance is arranged on the filter screen plate 5, and the aperture of the filter screen can be reasonably arranged as required; in the embodiment, the dust collection box 6 is made of conventional materials with certain mechanical strength, and any reasonable material can be selected according to needs; in the embodiment, the water inlet 7 and the water outlet 8 of the dust collection box 6 are both connected with a conventional pipeline in a conventional connection mode, and any reasonable connection mode and pipeline structure can be selected according to needs; in the embodiment, the air outlet pipe 9 adopts a conventional air outlet pipe 9 structure and a conventional connection mode, and any reasonable structure and connection mode can be selected according to requirements; in this embodiment, the control valve provided on the air outlet pipe 9 is a conventional commercially available product, and any reasonable structure and installation mode can be selected as required; in this embodiment, when the interior of the economizer 2 needs to be subjected to soot blowing cleaning, the soot blowing holes 4 can be connected with a conventional soot blower, the soot blower in this embodiment comprises a conventional commercially available air compressor, an air pipe, a ball valve and a pipeline connecting piece, and any reasonable structure and connection mode can be selected according to needs.

The top of the economizer 2 is provided with a soot blowing hole 4, when the cleaning maintenance is carried out for a period of time, a soot blowing device is connected to the soot blowing hole 4, air is blown in from top to bottom, intermittently or continuously through the soot blowing hole 4, and soot in the economizer 2 is blown downwards, so that the soot in the economizer 2 can be reduced, and the occurrence of the blocking condition in the economizer 2 can be reduced; the ash hopper 3 is arranged at the bottom of the economizer 2, so that the filtering and the collecting of the ash are facilitated, and the cleaning effect on the ash is improved; the filter screen plate 5 is provided with a filter screen, and when the boiler normally operates, the filter screen plate 5 in the ash bucket 3 can capture the ash in the tail gas; the tail gas filtered by the filter screen plate 5 is discharged out of the economizer 2 through the gas outlet pipe 9, so that the content of the soot in the tail gas discharged through the ash hopper 3 is reduced; after the filter screen plate is used for a period of time, the control valve controls the internal pressure of the economizer 2, and the soot blowing device is connected to the soot blowing holes 4 to blow soot downwards, so that the collected soot on the filter screen plate 5 is blown downwards, the accumulated soot on the filter screen plate 5 is cleaned, the service cycle of the filter screen plate 5 is prolonged, and the filtering effect of the filter screen plate 5 is improved; set up dust absorption box 6 in 3 bottoms of ash bucket, be equipped with the cleaning water through water inlet 7 and delivery port 8 in the dust absorption box 6, when blowing the ash cleanness to economizer 2, hydroenergy in the dust absorption box 6 enough absorbs from filter plate 5 blow down and fall into in dust absorption box 6, sewage passes through delivery port 8 discharge again, be favorable to realizing the clearance to filter plate 5, be favorable to removing the cigarette ash on filter plate 5, be favorable to improving life cycle, be favorable to reducing the appearance of the inside jam condition of economizer 2.

The edges of the upper end and the lower end of the filter screen plate 5 are provided with angle steels 10; the inner walls of the two sides of the ash hopper 3 are provided with support rails 11 corresponding to the angle steel 10; the angle steel 10 slides on the support rail 11; the end part of the angle steel 10 is provided with a limiting block; a limiting groove is formed in the end part of the supporting rail 11 corresponding to the limiting block; in this embodiment, the angle steel 10 and the support rail 11 are both made of conventional materials with certain mechanical strength, and any reasonable material can be selected according to needs; in the embodiment, the angle steel 10 and the support rail 11 are beneficial to the filter screen plate 5 to slide in the ash hopper 3 in an inclined manner, the filter screen plate 5 is beneficial to being drawn out in a sliding manner, the filter screen can be disassembled and assembled as required, and the filter screen plate 5 can be cleaned and maintained as required; when the filter screen plate 5 cannot be cleaned only by the soot blowing mode, the movably arranged filter screen plate 5 is beneficial to being taken out for further cleaning and maintenance; in the embodiment, the limiting block is made of conventional damping materials with certain mechanical strength, and any reasonable material can be selected according to requirements; in this embodiment, the stopper adopts mode and spacing groove swing joint that conventional joint is connected, is favorable to realizing nimble, the dismouting filter plate 5 steadily.

A sealing door is arranged on the side wall of the ash bucket 3; the filter screen plate 5 is slidingly drawn in the ash bucket 3 through a sealing door; in this embodiment, the sealing door adopts conventional commercial product, can select arbitrary reasonable structure and material as required, opens the sealing door, can slide to receive and release in ash bucket 3, is favorable to improving the convenience of dismouting filter plate 5.

A flow baffle 13 is arranged in the economizer 2 at intervals of a coiled pipe; the flow baffles 13 are arranged on the inner walls of the two sides of the economizer 2 in a vertically staggered manner; dust catching nets are arranged on the flow baffle 13 at intervals; in this embodiment, the flow baffle 13 and the dust catching net are both made of conventional materials with certain mechanical strength and heat resistance, and any reasonable material can be selected according to the requirement; in the embodiment, the aperture of the dust catching net can be reasonably selected according to the requirement; the baffle plates 13 are arranged in the economizer 2 at intervals, so that the baffle plates are mutually matched to form an S-shaped flue gas channel, the moving path of flue gas in the economizer 2 of the S-shaped flue gas channel is similar to an S shape, the circulation time of high-temperature soot in the economizer 2 is prolonged as far as possible in a limited space, the heat exchange time of high-temperature waste gas and a coiled pipe is prolonged, the heat exchange efficiency is improved, and the waste heat utilization efficiency is improved; the flow baffle 13 is provided with the dust catching nets at intervals, so that the flow baffle is favorable for catching part of soot in high-temperature waste gas while stopping the flow, the subsequent filtration treatment efficiency of the high-temperature waste gas is favorable for improving, and the filtration of the soot by the economizer 2 is favorable for enhancing; the dust catching nets are arranged on the flow baffle 13 at intervals, so that the flow baffle 13 can block and guide flow and can block and filter cigarette ash to a certain extent.

The side wall of the economizer 2 is provided with a mounting groove 15 corresponding to the flow baffle 13; the flow baffle 13 is movably arranged in the economizer 2 through a mounting groove 15; damping grooves 16 are formed in the surfaces of the two sides of the flow baffle 13; a damping block 17 is connected in the damping groove 16 through an elastic part 18; in this embodiment, the damping block 17 is made of a conventional material having a certain mechanical strength and damping performance, and any reasonable material can be selected according to the requirement, for example, a conventional rubber material having a certain mechanical strength is selected in this embodiment; in this embodiment, the elastic member 18 is made of a conventional material having a certain mechanical and elastic deformation force, and any reasonable material can be selected according to the requirement; in this example, a conventional commercially available spring was selected. In the embodiment, one end of the spring is fixedly connected with the bottom of the damping groove 16, the other end of the spring is fixedly connected with the damping block 17, and any reasonable fixed connection mode can be selected according to needs; the installation groove 15 is formed in the outer wall of the economizer 2 corresponding to the flow baffle 13, the flow baffle 13 can be flexibly assembled and disassembled through the installation groove 15, the flow baffle 13 can be flexibly assembled and disassembled according to requirements for maintenance and replacement, and the service cycle can be prolonged; the damping grooves 16 are formed in the surfaces of the two sides of the flow baffle 13, and the damping blocks 17 connected through the elastic parts 18 in the damping grooves 16 are beneficial to reducing the vibration of the joint of the flow baffle 13 and the economizer 2.

The outer wall of the economizer 2 is sleeved with a heat insulation sleeve 19; a clamping groove 20 is formed in the side wall of the heat insulation sleeve 19 corresponding to the damping block 17; the damping block 17 is movably connected with the clamping groove 20; in the embodiment, the heat insulation sleeve 19 is connected with the outer wall of the economizer 2 in a conventional fixed connection mode, and any reasonable heat insulation material can be selected to manufacture the heat insulation sleeve 19 according to the requirement; the heat-insulating sleeve 19 is sleeved on the outer wall of the economizer 2, so that the heat of the high-temperature tail gas is favorably reduced and dissipated to the surrounding environment through the heat conduction effect of the outer wall of the economizer 2, the heat exchange efficiency inside the economizer 2 is favorably improved, and the waste heat utilization efficiency is favorably improved; the side wall of the heat insulation sleeve 19 is provided with a clamping groove 20 corresponding to the damping block 17, so that the flow baffle 13 can be stably assembled and disassembled by clamping the damping block 17, the vibration of the joint of the flow baffle 13 and the heat insulation sleeve 19 can be buffered, and the structural stability can be improved.

The damping block 17 is a wedge-shaped block; a clamping hook 21 is arranged at the higher end of the damping block 17; a boss 22 is arranged on the inner wall of one side of the clamping groove 20 corresponding to the clamping hook 21; in this embodiment, the hook 21 and the boss 22 are made of conventional materials with certain mechanical strength, and any reasonable material can be selected according to the requirement; the structure of the wedge-shaped block adopts a conventional wedge-shaped structure with one higher end and one lower end, when the wedge-shaped block is installed, the lower end of the wedge-shaped block is aligned with the clamping groove 20 and is inserted in a sliding mode, and the wedge-shaped block downwards extrudes the elastic piece 18, so that the wedge-shaped block can enter the clamping groove 20; when the shock absorption block is clamped, the spring is reset, the clamping hook 21 at the upper end of the shock absorption block 17 is jacked up, so that the clamping hook 21 is clamped on the boss 22, the stable connection between the shock absorption block 17 and the clamping groove 209 is favorably realized, and the convenience in disassembly and assembly is favorably improved; when the flow baffle 13 needs to be detached, the flow baffle 13 is pushed into the economizer 2 for a certain distance, so that the hook 21 is separated from the boss 22, and the flow baffle 13 is horizontally pulled out, which is beneficial to realizing the convenience of detaching the flow baffle 13; any reasonable clamping structure can be selected according to needs, and the damping block 17 and the clamping groove 20 can be detachably connected.

A mounting plate is arranged at one end of the flow baffle 13 close to the damping groove 16; the mounting plate is connected with the outer wall of the heat insulation sleeve 19; a sealing ring is arranged at the edge of the mounting plate; in the embodiment, the mounting plate on the flow baffle 13 is beneficial to improving the sealing property and the stability of the joint of the flow baffle 13 and the economizer 2, the mounting plate and the outer wall of the heat insulation sleeve 19 can adopt a detachable connection mode of a conventional bolt and a conventional nut, and any reasonable connection mode can be selected according to the requirement; in the embodiment, the sealing ring is beneficial to shock absorption and sealing, and is beneficial to improving the sealing performance of the connection part of the flow baffle 13, the heat insulation sleeve 19 and the economizer 2.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. A biomass steam boiler comprises a boiler body (1) and an economizer (2); a coiled pipe is arranged inside the coal economizer (2); the method is characterized in that: an ash hopper (3) is arranged at the bottom of the coal economizer (2); the top of the economizer (2) is provided with an ash blowing hole (4); a filter screen plate (5) is obliquely arranged in the ash bucket (3); the filter screen plate (5) divides the ash bucket (3) into an upper cavity and a lower cavity from top to bottom; the bottom of the ash bucket (3) is also provided with a dust collection box (6); the dust collection box (6) is communicated with the lower cavity; a water inlet (7) is formed in one side wall of the dust collection box (6); a water outlet (8) is formed in the other side wall of the dust collection box (6); an air outlet pipe (9) is connected to one side wall of the ash bucket (3); the air outlet pipe (9) is connected with the cavity of the lower cavity; and a control valve is arranged on the air outlet pipe (9).

2. A biomass steam boiler according to claim 1, characterized in that: the edges of the upper end and the lower end of the filter screen plate (5) are provided with angle steels (10); the inner walls of the two sides of the ash hopper (3) are provided with supporting rails (11) corresponding to the angle steel (10); the angle steel (10) slides on the support rail (11); the end part of the angle steel (10) is provided with a limiting block; and a limiting groove is formed in the end part of the supporting rail (11) corresponding to the limiting block.

3. A biomass steam boiler according to claim 2, characterized in that: a sealing door is arranged on the side wall of the ash bucket (3); the filter screen plate (5) is slidingly drawn in the ash bucket (3) through a sealing door.

4. A biomass steam boiler according to claim 1, characterized in that: a flow baffle (13) is arranged in the economizer (2) at intervals of a coiled pipe; the flow baffles (13) are arranged on the inner walls of the two sides of the economizer (2) in a vertically staggered manner; and dust catching nets are arranged on the flow baffle (13) at intervals.

5. A biomass steam boiler according to claim 4, characterized in that: the side wall of the coal economizer (2) is provided with a mounting groove (15) corresponding to the flow baffle (13); the flow baffle (13) is movably arranged in the coal economizer (2) through a mounting groove (15); damping grooves (16) are formed in the surfaces of the two sides of the flow baffle (13); the damping groove (16) is internally connected with a damping block (17) through an elastic piece (18).

6. A biomass steam boiler according to claim 5, characterized in that: the outer wall of the economizer (2) is sleeved with a heat insulation sleeve (19); a clamping groove (20) is formed in the side wall of the heat insulation sleeve (19) corresponding to the damping block (17); the shock absorption block (17) is movably connected with the clamping groove (20).

7. A biomass steam boiler according to claim 6, characterized in that: the damping block (17) is a wedge-shaped block; a clamping hook (21) is arranged at the higher end of the damping block (17); and a boss (22) is arranged on the inner wall of one side of the clamping groove (20) corresponding to the clamping hook (21).

8. A biomass steam boiler according to claim 7, characterized in that: one end of the flow baffle (13) close to the damping groove (16) is provided with a mounting plate; the mounting plate is connected with the outer wall of the heat insulation sleeve (19); and a sealing ring is also arranged at the edge of the mounting plate.