CN113757708A

CN113757708A - Heat supply unit dual-purpose flue gas waste heat utilization system

Info

Publication number: CN113757708A
Application number: CN202110857258.3A
Authority: CN
Inventors: 不公告发明人
Original assignee: Xu Sibao
Current assignee: Xu Sibao
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2021-12-07

Abstract

The invention discloses a dual-purpose flue gas waste heat utilization system of a heat supply unit, which is provided with a box body, wherein one side of the box body is provided with an air inlet; the movable shaft is movably arranged in the dust removing cavity, and one end of the movable shaft is fixedly provided with a blade plate; the method comprises the following steps: the scraper is arranged on the side surface of the movable shaft, and a cam is sleeved at the other end of the movable shaft; the fixed box is fixed on the box body on the outer side of the valve plate, and a water inlet pipe penetrates through the side surface of the fixed box; the filter screen is fixed on the inner wall of the dust removing cavity, and one end of the transmission pipe is fixed on the outer side of the dust removing cavity; and one end of the connecting pipe is fixedly connected with the other end of the transmission pipe. This heat supply unit dual-purpose flue gas waste heat utilization system can carry out purification treatment to a large amount of smoke and dust in the flue gas, avoids the smoke and dust to get into the water storage intracavity to can avoid causing the jam of pipeline, when guaranteeing the waste heat recovery device leakproofness, can promote heat recovery efficiency simultaneously.

Description

Heat supply unit dual-purpose flue gas waste heat utilization system

Technical Field

The invention relates to the technical field of heat supply units, in particular to a dual-purpose flue gas waste heat utilization system of a heat supply unit.

Background

The heat supply unit is through gas, electric power or solar energy for fuel heats the boiler, and then produces the heat and carry out the indirect heating equipment of heat supply, can produce a large amount of flue gases in the boiler heating process, not only contains a large amount of harmful smoke and dust in this flue gas, still has higher heat, carries out recycle to heat in the flue gas, has the feature of environmental protection and can save the resource, nevertheless current flue gas waste heat utilization equipment still has following shortcoming in the in-service use:

1. in the traditional flue gas waste heat utilization device, flue gas contains a large amount of smoke dust, and during the flue gas transmission process, the smoke dust easily enters the waste heat recovery device to cause the pollution of heated water, the smoke dust in the flue gas is not efficiently treated, and the pipeline is easily blocked;

2. inside avoiding the smoke and dust to get into equipment simultaneously, need guarantee waste heat recovery device's leakproofness, consequently will cause the phenomenon that heat recovery efficiency is low, and is not complete enough to the heat recovery in the flue gas, causes partial heat to run off.

Aiming at the problems, innovative design is urgently needed on the basis of original flue gas waste heat utilization.

Disclosure of Invention

The invention aims to provide a dual-purpose flue gas waste heat utilization system of a heat supply unit, and aims to solve the problems that smoke dust is easy to enter a waste heat recovery device to cause pollution of heated water, and heat in flue gas is not completely recovered to cause partial heat loss in the flue gas transmission process in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a dual-purpose flue gas waste heat utilization system of a heat supply unit is provided with a box body, wherein one side of the box body is provided with an air inlet, and a dust removal cavity is formed in the box body at the outlet of the air inlet;

the movable shaft is movably arranged in the dust removing cavity, and one end of the movable shaft is fixedly provided with a blade plate;

the method comprises the following steps:

the scraper is arranged on the side surface of the movable shaft, a cam is sleeved at the other end of the movable shaft, a movable rod is movably arranged below the cam, a return spring is sleeved at one end of the movable rod, and the other end of the movable rod is connected with a valve plate;

the fixed box is fixed on the box body on the outer side of the valve plate, a water inlet pipe penetrates through the side face of the fixed box, and a water outlet pipe penetrates through the top of the fixed box;

the filter screen is fixed on the inner wall of the dust removing cavity, one end of a transmission pipe is fixed on the outer side of the dust removing cavity, and a water storage cavity is arranged in the box body below the transmission pipe;

one end of the connecting pipe is fixedly connected with the other end of the transmission pipe, a heat-insulating sleeve box for insulating the box body is sleeved on the outer side of the box body, a connecting cavity is formed in the heat-insulating sleeve box, and an air outlet is formed in the side face of the heat-insulating sleeve box.

Preferably, the cross-section of dust removal chamber is circular structure, and the bottom in dust removal chamber is the undercut setting to dust removal chamber and transmission pipe intercommunication each other, so that can scrape the dust of dust removal intracavity wall adhesion when the scraper blade rotates, and fall and can not be driven the lift in its depressed place.

Preferably, the through-hole that reduces the resistance is seted up to the side of scraper blade, and the edge of scraper blade contacts with the inner wall in dust removal chamber to the one end that the scraper blade is close to the filter screen is fixed with the cleaning brush, and the scraper blade can reduce the rotation resistance through the through-hole when striking off the smoke and dust, and the scraper blade can carry out synchronous clearance to the filter screen in the pivoted.

Preferably, the movable rod and the box body are in longitudinal sliding connection, the bottom of the movable rod extends into the fixed box, a one-way valve is arranged in a valve plate at the bottom of the movable rod, water at the lower end of the fixed box can be driven to enter the upper end of the fixed box when the valve plate moves downwards, and the water in the water storage cavity can be pumped into the lower end of the fixed box when the valve plate moves upwards, and the water at the upper end of the fixed box is pushed into the water outlet pipe.

Preferably, a connecting channel is formed in the box body at the top of the water outlet pipe, the fixing box is communicated with the dust removal cavity through the water outlet pipe and the connecting channel, spray holes are reserved in the inner wall of the dust removal cavity at equal angles, and after water in the water outlet pipe enters the connecting channel, the water can be sprayed out through the spray holes to achieve suppression of smoke dust.

Preferably, the both ends of transmission pipe are linked together with dust removal chamber and connecting pipe respectively, and the transmission pipe is curved structure to the equidistant cover in outside of transmission pipe is equipped with the heat conduction lantern ring, and the flue gas can slow down the transmission speed in the box after getting into in the transmission pipe, and the convenience is retrieved thermal high efficiency.

Preferably, the bottom of the heat conduction lantern ring is fixed with the heat conduction pole, and the top of heat conduction pole extends to the inside of transmission pipe to the bottom of heat conduction pole extends to the inside in water storage chamber, and the heat conduction pole is the copper pole material simultaneously, because the copper pole has good heat conductivity, can pour the heat in the transmission pipe into the water storage chamber when guaranteeing the leakproofness.

Preferably, the connecting pipe and the connecting cavity are communicated with each other, the cross section of the connecting cavity is of a U-shaped structure, the connecting cavity is wrapped at the lower end of the box body, smoke with waste heat can enter the connecting cavity, and heat preservation of the outer portion of the water storage cavity is achieved.

Compared with the prior art, the invention has the beneficial effects that: the dual-purpose flue gas waste heat utilization system of the heat supply unit can purify a large amount of smoke dust in flue gas, prevent the smoke dust from entering a water storage cavity, prevent pipelines from being blocked, and improve the heat recovery efficiency while ensuring the sealing performance of a waste heat recovery device;

1. the movable shaft and the scraper can be driven to rotate by blowing of the smoke, so that the smoke adhered in the dust removal cavity can be scraped, the scraped smoke can fall on a concave part of the dust removal cavity, the smoke is prevented from being driven by the scraper to be lifted, the subsequent cleaning is convenient, the cleaning brush can be driven to clean the filter screen when the scraper rotates, and the smoothness of smoke transmission is ensured;

2. the movable shaft can drive the movable rod to lift through the cam while rotating, and drive the valve plate to move so as to pump water in the water storage cavity into the fixed box, then the water in the fixed box is pushed into the connecting channel through the water outlet pipe, and finally the water is sprayed into the dust removal cavity from the spray hole, so that the smoke dust is prevented from being raised, a small amount of liquid sprayed at a single time can be fused with the smoke dust, and redundant liquid can be dried through heat in smoke gas, so that the liquid is prevented from being left;

3. through the setting of a plurality of copper pole material heat conduction poles, can be more efficient with heat transfer to the water storage intracavity in the transfer pipe to when deriving the heat, can avoid the flue gas to get into the water storage intracavity portion, after partial waste heat gets into in the connecting tube, can reentrant connection intracavity, promote the thermal insulation performance of water storage intracavity liquid, and then realize maximum waste heat recovery and utilize.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic view of a front cross-sectional structure of the insulating sleeve of the present invention;

FIG. 3 is a schematic front sectional view of an air inlet according to the present invention;

FIG. 4 is an enlarged view of a portion a of FIG. 2 according to the present invention;

FIG. 5 is a schematic front sectional view of the fixing case according to the present invention;

FIG. 6 is a schematic cross-sectional view taken along line A-A of FIG. 3 according to the present invention;

FIG. 7 is a schematic cross-sectional view taken at b in FIG. 2 according to the present invention.

In the figure: 1. a box body; 2. an air inlet; 3. a dust removal cavity; 4. a movable shaft; 5. a paddle board; 6. a squeegee; 61. a through hole; 62. cleaning a brush; 7. a cam; 8. a movable rod; 9. a return spring; 10. a valve plate; 11. a fixing box; 12. a water inlet pipe; 13. a water outlet pipe; 14. a connecting channel; 15. spraying a hole; 16. filtering with a screen; 17. a conveying pipe; 18. a heat conducting collar; 19. a heat conducting rod; 20. a water storage cavity; 21. a connecting pipe; 22. a heat-insulating sleeve box; 23. a connecting cavity; 24. and an air outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a dual-purpose flue gas waste heat utilization system of a heat supply unit is provided with a box body 1, one side of the box body 1 is provided with an air inlet 2, and a dust removing cavity 3 is arranged in the box body 1 at the outlet of the air inlet 2;

the movable shaft 4 is movably arranged in the dust removing cavity 3, and one end of the movable shaft 4 is fixed with a blade plate 5;

the method comprises the following steps:

the scraper 6 is arranged on the side surface of the movable shaft 4, the other end of the movable shaft 4 is sleeved with a cam 7, a movable rod 8 is movably arranged below the cam 7, one end of the movable rod 8 is sleeved with a return spring 9, and the other end of the movable rod 8 is connected with a valve plate 10;

the fixed box 11 is fixed on the box body 1 at the outer side of the valve plate 10, a water inlet pipe 12 penetrates through the side surface of the fixed box 11, and a water outlet pipe 13 penetrates through the top of the fixed box 11;

the filter screen 16 is fixed on the inner wall of the dust removing cavity 3, one end of a transmission pipe 17 is fixed on the outer side of the dust removing cavity 3, and a water storage cavity 20 is arranged in the box body 1 below the transmission pipe 17;

one end of the connecting pipe 21 is fixedly connected with the other end of the transmission pipe 17, a heat-insulating sleeve box 22 for insulating the connecting pipe is sleeved outside the box body 1, a connecting cavity 23 is formed in the heat-insulating sleeve box 22, and an air outlet 24 is formed in the side face of the heat-insulating sleeve box 22.

The section of the dust removing cavity 3 is of a circular structure, the bottom of the dust removing cavity 3 is arranged in a downward concave mode, and the dust removing cavity 3 is communicated with the transmission pipe 17; a through hole 61 for reducing resistance is formed in the side surface of the scraper 6, the edge of the scraper 6 is in contact with the inner wall of the dust removing cavity 3, and a cleaning brush 62 is fixed at one end of the scraper 6 close to the filter screen 16;

as shown in fig. 1 and fig. 3-4, when the scraping plate 6 rotates, the smoke dust adhered to the inner wall of the dust removing cavity 3 can be scraped, so that the smoke dust is prevented from being continuously transmitted into the transmission pipe 17, the resistance of the rotation of the scraping plate 6 can be reduced through the arrangement of the through holes 61 in the scraping process, the smoke dust can conveniently fall into the concave part at the bottom of the dust removing cavity 3, and meanwhile, the scraping plate 6 can drive the cleaning brush 62 to rotate while rotating, so that the filter screen 16 can be synchronously cleaned, and the smoothness of smoke gas transmission cannot be influenced;

the movable rod 8 is longitudinally connected with the box body 1 in a sliding manner, the bottom of the movable rod 8 extends into the fixed box 11, and a one-way valve is arranged in a valve plate 10 at the bottom of the movable rod 8; a connecting channel 14 is arranged in the box body 1 at the top of the water outlet pipe 13, the fixed box 11 is communicated with the dust removing cavity 3 through the water outlet pipe 13 and the connecting channel 14, and spray holes 15 are reserved on the inner wall of the dust removing cavity 3 at equal angles;

as shown in fig. 2-3 and 5-6, the movable shaft 4 can drive the cam 7 to rotate while rotating, so as to drive the movable rod 8 to lift in the box body 1, and drive the valve plate 10 to move in the fixed box 11, when the valve plate 10 moves upwards, water in the water storage cavity 20 can be pumped into the lower end of the fixed box 11 through the water inlet pipe 12, and then water at the upper end of the fixed box 11 is pushed into the water outlet pipe 13, because the valve plate 10 is internally provided with the one-way valve, when the valve plate moves downwards, water at the lower end of the fixed box 11 can enter the upper end of the fixed box, then water in the water outlet pipe 13 continuously flows into the connecting channel 14, and finally the water is sprayed into the dust removal cavity 3 from the spray holes 15, so that the smoke dust is inhibited, the amount of water sprayed by the spray holes 15 once is small, and excessive water can be dried by the heat in the smoke, so that the phenomenon of liquid residue cannot occur;

two ends of the transmission pipe 17 are respectively communicated with the dust removal cavity 3 and the connecting pipe 21, the transmission pipe 17 is of a bent structure, and heat-conducting lantern rings 18 are sleeved on the outer side of the transmission pipe 17 at equal intervals; a heat conducting rod 19 is fixed at the bottom of the heat conducting sleeve ring 18, the top of the heat conducting rod 19 extends to the inside of the transmission pipe 17, the bottom of the heat conducting rod 19 extends to the inside of the water storage cavity 20, and the heat conducting rod 19 is made of a copper rod material; the connecting pipe 21 and the connecting cavity 23 are communicated with each other, the section of the connecting cavity 23 is in a U-shaped structure, and the connecting cavity 23 is wrapped at the lower end of the box body 1;

as shown in fig. 2 and 7, the flue gas continues the conveying in transmission pipe 17, heat conducting rod 19 through the copper pole material can transmit the heat efficient in the transmission pipe 17 to the water storage chamber 20 in, reduce thermal loss, curved transmission pipe 17 can slow down the speed of flue gas transmission simultaneously, realize thermal high-efficient recovery, the flue gas gets into back in the connecting pipe 21 at last, remaining waste heat can get into in connecting chamber 23, wrap up water storage chamber 20 comprehensively, promote its thermal insulation performance, realize maximum waste heat recovery.

The working principle is as follows: as shown in figures 1-7, firstly, the flue gas containing heat is introduced into the box body 1 from the air inlet 2, when the flue gas contacts with the paddle board 5, the flue gas can drive the flue gas and the movable shaft 4 to rotate, and further drive the scraper 6 to rotate, so that the dust adhered to the inner wall of the dust removing cavity 3 can be scraped by the scraper 6, and the movable rod 8 is driven by the cam 7 to do lifting motion, the water in the water storage cavity 20 is pumped into the fixed box 11 and then pushed into the connecting channel 14, and is sprayed to the smoke from the spray holes 15, so as to play a role of dust suppression, and the phenomenon of pipeline blockage caused by the smoke entering and transmitting into the transmission pipe 17 can also be prevented, and the arrangement of the copper rod material heat conducting rod 19 can realize efficient heat conduction while improving the sealing performance of the box body 1, comprehensively recycle the heat in the flue gas, and part of the heat contained in the finally discharged flue gas can enter the connecting cavity 23 and completely wrap the outside of the box body 1, the heat preservation performance of the liquid in the water storage cavity 20 is improved.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. A dual-purpose flue gas waste heat utilization system of a heat supply unit is provided with a box body (1), one side of the box body (1) is provided with an air inlet (2), and a dust removing cavity (3) is arranged in the box body (1) at the outlet of the air inlet (2);

the movable shaft (4) is movably arranged in the dust removing cavity (3), and one end of the movable shaft (4) is fixedly provided with a blade plate (5);

it is characterized by comprising:

the scraper blade (6) is arranged on the side face of the movable shaft (4), the other end of the movable shaft (4) is sleeved with a cam (7), a movable rod (8) is movably arranged below the cam (7), one end of the movable rod (8) is sleeved with a return spring (9), and the other end of the movable rod (8) is connected with a valve plate (10);

the fixed box (11) is fixed on the box body (1) on the outer side of the valve plate (10), a water inlet pipe (12) penetrates through the side face of the fixed box (11), and a water outlet pipe (13) penetrates through the top of the fixed box (11);

the filter screen (16) is fixed on the inner wall of the dust removing cavity (3), one end of the transmission pipe (17) is fixed on the outer side of the dust removing cavity (3), and a water storage cavity (20) is arranged in the box body (1) below the transmission pipe (17);

one end of the connecting pipe (21) is fixedly connected with the other end of the transmission pipe (17), a heat-insulating sleeve box (22) for insulating the box body (1) is sleeved on the outer side of the box body (1), a connecting cavity (23) is formed in the heat-insulating sleeve box (22), and an air outlet (24) is formed in the side face of the heat-insulating sleeve box (22).

2. The dual-purpose flue gas waste heat utilization system of the heat supply unit as claimed in claim 1, wherein: the cross section of the dust removing cavity (3) is of a circular structure, the bottom of the dust removing cavity (3) is arranged in a downward concave mode, and the dust removing cavity (3) is communicated with the conveying pipe (17).

3. The dual-purpose flue gas waste heat utilization system of the heat supply unit as claimed in claim 1, wherein: through-hole (61) that reduce the resistance are seted up to the side of scraper blade (6), and the edge of scraper blade (6) contacts with the inner wall in dust removal chamber (3) to scraper blade (6) are close to the one end of filter screen (16) and are fixed with cleaning brush (62).

4. The dual-purpose flue gas waste heat utilization system of the heat supply unit as claimed in claim 1, wherein: the movable rod (8) is connected with the box body (1) in a longitudinal sliding mode, the bottom of the movable rod (8) extends to the inside of the fixed box (11), and a one-way valve is arranged in a valve plate (10) at the bottom of the movable rod (8).

5. The dual-purpose flue gas waste heat utilization system of the heat supply unit as claimed in claim 1, wherein: a connecting channel (14) is arranged in the box body (1) at the top of the water outlet pipe (13), the fixing box (11) is communicated with the dust removing cavity (3) through the water outlet pipe (13) and the connecting channel (14), and spray holes (15) are reserved on the inner wall of the dust removing cavity (3) at equal angles.

6. The dual-purpose flue gas waste heat utilization system of the heat supply unit as claimed in claim 1, wherein: two ends of the transmission pipe (17) are respectively communicated with the dust removing cavity (3) and the connecting pipe (21), the transmission pipe (17) is of a bent structure, and heat-conducting lantern rings (18) are sleeved on the outer side of the transmission pipe (17) at equal intervals.

7. The dual-purpose flue gas waste heat utilization system of the heat supply unit as claimed in claim 6, wherein: the bottom of heat conduction lantern ring (18) is fixed with heat conduction pole (19), and the top of heat conduction pole (19) extends to the inside of transmission pipe (17) to the bottom of heat conduction pole (19) extends to the inside in water storage chamber (20), and heat conduction pole (19) are the copper pole material simultaneously.

8. The dual-purpose flue gas waste heat utilization system of the heat supply unit as claimed in claim 1, wherein: the connecting pipe (21) and the connecting cavity (23) are communicated with each other, the section of the connecting cavity (23) is of a U-shaped structure, and the connecting cavity (23) is wrapped at the lower end of the box body (1).