Smoke exhaust mechanism of light burning kiln

Abstract

The utility model discloses a smoke exhaust mechanism of a light-burning kiln, which belongs to the technical field of light-burning kilns and comprises a kiln body, a first air extracting pump is fixedly mounted on the side of the kiln body, the input end of the first air extracting pump extends to an inner cavity of the kiln body, and the output end of the first air extracting pump is fixedly connected with a smoke exhaust pipe. The end part of the smoke exhaust pipe is fixedly connected with a filter box, the top of the filter box is provided with a gas storage mechanism, the side part of the filter box is fixedly provided with a three-way valve, and one end of the three-way valve is provided with a smoke treatment mechanism. According to the utility model, the filter screen in the filter box is used for filtering harmful substances in smoke, the servo motor is used for driving the reciprocating screw rod to rotate, the reciprocating screw rod and the scraper blade are matched to drive the scraper blade to reciprocate, and the scraper blade is used for cleaning the harmful substances filtered from the filter screen; and the dust removal box is used for collecting the filtered harmful substances, so that the practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of light-fired kilns, and more specifically to a smoke exhaust mechanism of light-fired kilns. Background Art

[0002] Light-burning kiln is a device that manufactures light-weight building materials by heating raw materials to high temperatures to cause sintering reactions. The sintering reaction will cause the raw materials to expand and form a pore structure, thereby reducing their density. This kind of light-weight building material has low density, excellent thermal insulation performance and good compressive strength, so it has a wide range of application prospects in the construction industry. The use of light-burning kilns in the production and processing of light-burning powder, magnesium calcium powder, magnesium balls, magnesite, etc. will produce smoke, which will cause great harm to the environment.

[0003] After searching, the utility model patent with announcement number CN211425096U discloses a light-fired kiln equipped with an exhaust gas recovery device. Aiming at the problem that the exhaust gas of the existing light-fired kiln is not effectively recovered and most of it goes directly into the atmosphere, and the exhaust gas contains harmful substances that will cause harm to the atmosphere and human body, the following scheme is proposed, which includes a light-fired kiln main body, a purification box and an air suction pump, the air suction pump is located between the light-fired kiln main body and the purification box, the input end of the air suction pump extends into the light-fired kiln main body, one side of the purification box is fixedly connected with an adjustment seat, the adjustment seat is provided with an installation chamber, and the installation chamber is provided with an adjustment component. The patent has a reasonable structure and is simple to operate. Harmful substances in the exhaust gas can be filtered through a filter screen, so as not to pollute the environment. At the same time, the heat of the exhaust gas can be recovered through a recovery pipe through a ventilation fan to improve the utilization rate.

[0004] However, the above patent has the following shortcomings: although the cleaning brush can clean the filter, the harmful materials cleaned will fall on the bevel gear, which will affect the transmission of the bevel gear, and it is not convenient to collect the harmful materials scraped off; because the flue gas of the light-fired kiln contains heat, when the light-fired kiln is reused, it is necessary to heat the light-fired kiln repeatedly, and the hot gas cannot be preserved, which will also cause energy waste. For this reason, we propose a smoke exhaust mechanism for the light-fired kiln. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model aims to provide a smoke exhaust mechanism for a light-firing kiln.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A smoke exhaust mechanism for a light-firing kiln comprises a kiln body, a first air suction pump is fixedly installed on the side of the kiln body, an input end of the first air suction pump extends to the inner cavity of the kiln body, an output end of the first air suction pump is fixedly connected to a smoke exhaust pipe, an end of the smoke exhaust pipe is fixedly connected to a filter box, a gas storage mechanism is arranged on the top of the filter box, a three-way valve is fixedly installed on the side of the filter box, a smoke treatment mechanism is arranged at one end of the three-way valve, a filter screen is fixedly sleeved on the inner cavity of the filter box, a dust box is fixedly connected to the front and rear of the filter box, a reciprocating screw rod is rotatably connected between the two dust boxes, the reciprocating screw rod passes through the inner cavity of the filter box, a scraper is threadedly sleeved on the outer side of the reciprocating screw rod, an end face of the scraper plate is in contact with the side face of the filter screen, a servo motor is fixedly installed on the outer side of one of the dust boxes, and the output shaft of the servo motor is connected to the end of the reciprocating screw rod.

[0008] As a preferred embodiment of the utility model, the gas storage mechanism includes a smoke storage box fixedly connected to the top surface of the filter box, a second air pump is fixedly installed on one side of the smoke storage box, the input end of the second air pump extends to the inner cavity of the smoke storage box, the output end of the second air pump is fixedly connected to a second return air pipe, the end of the second return air pipe extends to the inner cavity of the kiln body, and the other side of the smoke storage box is fixedly sleeved with a first return air pipe, and the end of the first return air pipe is connected to the three-way valve.

[0009] As a preferred solution of the utility model, the flue gas treatment mechanism includes a first air duct fixedly connected to one end of the three-way valve, the end of the first air duct is fixedly connected to a heat recovery device, the side of the heat recovery device is fixedly connected to a second air duct, the end of the second air duct is fixedly connected to a purifier, and a smoke outlet pipe is arranged on the outside of the purifier.

[0010] As a preferred solution of the utility model, a flow control valve is fixedly installed in the middle of the smoke exhaust pipe.

[0011] As a preferred solution of the utility model, elastic tubes are fixedly connected to both sides of the scraper, the ends of the two elastic tubes are respectively connected to the inner wall of the dust removal box, and the elastic tube sleeve is arranged on the outside of the reciprocating screw.

[0012] As a preferred solution of the utility model, the top surface and the bottom surface of the scraper are respectively in contact with the inner wall of the filter box, and a plurality of supporting legs are fixedly connected to the bottom surface of the filter box.

[0013] As a preferred solution of the utility model, sealed box doors are hinged on the outer sides of the two dust removal boxes respectively.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) In the utility model, the filter net in the filter box is used to filter the harmful substances in the smoke. In addition, the reciprocating screw is driven to rotate by a servo motor, and the scraper is driven to move back and forth by the cooperation between the reciprocating screw and the scraper. The scraper is used to clean up the harmful substances filtered out of the filter net, and the filtered harmful substances are collected by a dust removal box.

[0016] (2) In the utility model, when it is necessary to carry out firing multiple times in the kiln body, the high-temperature flue gas filtered in the filter box can be pumped into the smoke storage box for storage through the three-way valve and the first return air pipe, and after the material is put back into the kiln body, the high-temperature flue gas is guided back into the kiln body through the second exhaust pump and the second return air pipe, so that the kiln body has a certain temperature, avoiding reheating of the kiln body and preventing heat waste, which has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the filter box of the utility model;

[0019] Figure 3 This is a schematic diagram of the interior of the filter box of the utility model;

[0020] Figure 4 It is a cross-sectional schematic diagram of the filter box of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1. Kiln body; 2. First vacuum pump; 3. Smoke exhaust pipe; 4. Flow control valve; 5. Filter box; 6. Gas storage mechanism; 7. Three-way valve; 8. Smoke treatment mechanism; 9. Dust removal box; 10. Filter screen; 11. Reciprocating screw rod; 12. Scraper; 13. Servo motor; 14. Support leg; 15. Sealed box door; 16. Elastic tube; 17. Smoke storage box; 18. First return air pipe; 19. Second vacuum pump; 20. Second return air pipe; 21. First air duct; 22. Heat recovery device; 23. Second air duct; 24. Purifier; 25. Smoke outlet pipe. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Example:

[0027] See also Figure 1-4 , a smoke exhaust mechanism of a light-firing kiln comprises a kiln body 1, a first air pump 2 is fixedly installed on the side of the kiln body 1, the input end of the first air pump 2 extends to the inner cavity of the kiln body 1, the output end of the first air pump 2 is fixedly connected to a smoke exhaust pipe 3, the end of the smoke exhaust pipe 3 is fixedly connected to a filter box 5, the top of the filter box 5 is provided with a gas storage mechanism 6, a three-way valve 7 is fixedly installed on the side of the filter box 5, one end of the three-way valve 7 is provided with a smoke treatment mechanism 8, the inner cavity of the filter box 5 is fixedly sleeved with a filter screen 10, the front and rear of the filter box 5 are fixedly connected with a dust removal box 9, a reciprocating screw rod 11 is rotatably connected between the two dust removal boxes 9, the reciprocating screw rod 11 passes through the inner cavity of the filter box 5, the outer side of the reciprocating screw rod 11 is threadedly sleeved with a scraper 12, the end face of the scraper 12 is fitted with the side of the filter screen 10, a servo motor 13 is fixedly installed on the outer side of a dust removal box 9, and the output shaft of the servo motor 13 is connected to the end of the reciprocating screw rod 11.

[0028] For details, please refer to Figure 1 The gas storage mechanism 6 includes a smoke storage box 17 fixedly connected to the top surface of the filter box 5, a second air pump 19 is fixedly installed on one side of the smoke storage box 17, the input end of the second air pump 19 extends to the inner cavity of the smoke storage box 17, the output end of the second air pump 19 is fixedly connected to a second return air pipe 20, the end of the second return air pipe 20 extends to the inner cavity of the kiln body 1, and the other side of the smoke storage box 17 is fixedly sleeved with a first return air pipe 18, and the end of the first return air pipe 18 is connected to the three-way valve 7.

[0029] For details, please refer to Figure 1 The flue gas treatment mechanism 8 includes a first air duct 21 fixedly connected to one end of the three-way valve 7, a heat recovery device 22 is fixedly connected to the end of the first air duct 21, a second air duct 23 is fixedly connected to the side of the heat recovery device 22, a purifier 24 is fixedly connected to the end of the second air duct 23, and a smoke outlet pipe 25 is arranged on the outside of the purifier 24.

[0030] In this embodiment, the heat recovery device 22 is used to recover the heat in the flue gas, and the purifier 24 is used to purify and remove gases such as sulfur dioxide and nitrogen oxides in the flue gas. The heat recovery device 22 and the purifier 24 are both existing technologies.

[0031] For details, please refer to Figure 1 A flow control valve 4 is fixedly installed in the middle of the smoke exhaust pipe 3.

[0032] In this embodiment, the flow rate of smoke introduced into the filter box 5 by the smoke exhaust pipe 3 is adjusted by the flow control valve 4 .

[0033] For details, please refer to Figure 3 Elastic tubes 16 are fixedly connected to both sides of the scraper 12 , and the ends of the two elastic tubes 16 are respectively connected to the inner wall of the dust removal box 9 , and the elastic tubes 16 are sleeved on the outer side of the reciprocating screw rod 11 .

[0034] In this embodiment, the reciprocating screw 11 is protected by the elastic tube 16 to prevent harmful substances from adhering to the reciprocating screw 11 . In addition, the elastic tube 16 has high temperature resistance to prevent the temperature of the flue gas from affecting the elastic tube 16 .

[0035] For details, please refer to Figure 3 The top surface and the bottom surface of the scraper 12 are respectively in contact with the inner wall of the filter box 5 , and a plurality of supporting legs 14 are fixedly connected to the bottom surface of the filter box 5 .

[0036] In this embodiment, the scraper 12 is limited by the inner wall of the filter box 5 so that the scraper 12 can only move along the axial direction of the reciprocating screw 11 , and the filter box 5 is supported by the support legs 14 .

[0037] For details, please refer to Figure 2 The outer sides of the two dust removal boxes 9 are respectively hinged with sealed box doors 15.

[0038] In this embodiment, the harmful substances collected in the dust removal box 9 are cleaned by opening the sealed box door 15 .

[0039] Working principle: When in use, first start the first vacuum pump 2 to extract the smoke in the kiln body 1, and let the smoke be introduced into the filter box 5 through the smoke exhaust pipe 3, and use the filter screen 10 in the filter box 5 to filter the harmful substances in the smoke, and the filtered smoke enters the three-way valve 7, and then when it is necessary to fire in the kiln body 1 again later, control the three-way valve 7 to connect the filter box 5 and the first return air pipe 18, so that the high-temperature smoke filtered in the filter box 5 enters the smoke storage box 17 for storage, and after the material is replaced in the kiln body 1, the high-temperature smoke in the smoke storage box 17 is introduced into the kiln body 1 from the second vacuum pump 19 and the second return air pipe 20. When it is not necessary to fire in the kiln body 1, control the three-way valve 7 to connect the filter box 5 and the first return air pipe 18. The air pipes 21 are connected, so that the flue gas in the filter box 5 is introduced into the heat recovery device 22 from the first air duct 21, and the heat recovery device 22 is used to recover the heat in the flue gas. The recovered flue gas enters the purifier 24 from the second air duct 23, and the purifier 24 is used to purify and eliminate harmful gases in the flue gas, and the flue gas is discharged from the smoke outlet pipe 25. Finally, when the filter 10 filters the flue gas, the servo motor 13 is started to drive the reciprocating screw 11 to rotate, and the cooperation between the reciprocating screw 11 and the scraper 12 is used to drive the scraper 12 to move along the axial direction of the reciprocating screw 11, and the scraper 12 is used to scrape the filter surface of the filter 10, and the filtered harmful substances are cleaned up and collected in the dust removal box 9.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and improved concept of the present invention, which should be included in the protection scope of the present invention.

Claims

1. A fume exhaust mechanism for a light-fired kiln, comprising a kiln body (1), characterized in that: A first vacuum pump (2) is fixedly mounted on the side of the kiln body (1); the input end of the first vacuum pump (2) extends to the inner cavity of the kiln body (1); the output end of the first vacuum pump (2) is fixedly connected to a smoke exhaust pipe (3); the end of the smoke exhaust pipe (3) is fixedly connected to a filter box (5); a gas storage mechanism (6) is arranged on the top of the filter box (5); a three-way valve (7) is fixedly mounted on the side of the filter box (5); a smoke treatment mechanism (8) is arranged at one end of the three-way valve (7); a filter is fixedly sleeved on the inner cavity of the filter box (5); The filter box (5) is provided with a filter screen (10), the front and rear parts of the filter box (5) are fixedly connected with dust removal boxes (9), a reciprocating screw rod (11) is rotatably connected between the two dust removal boxes (9), the reciprocating screw rod (11) passes through the inner cavity of the filter box (5), a scraper (12) is threadedly sleeved on the outer side of the reciprocating screw rod (11), the end face of the scraper plate (12) is in contact with the side face of the filter screen (10), a servo motor (13) is fixedly installed on the outer side of one of the dust removal boxes (9), and the output shaft of the servo motor (13) is connected to the end of the reciprocating screw rod (11).

2. The smoke exhaust mechanism of a light-firing kiln according to claim 1, characterized in that: The gas storage mechanism (6) comprises a smoke storage box (17) fixedly connected to the top surface of the filter box (5); a second air pump (19) is fixedly installed on one side of the smoke storage box (17); the input end of the second air pump (19) extends to the inner cavity of the smoke storage box (17); the output end of the second air pump (19) is fixedly connected to a second air return pipe (20); the end of the second air return pipe (20) extends to the inner cavity of the kiln body (1); the other side of the smoke storage box (17) is fixedly sleeved with a first air return pipe (18); the end of the first air return pipe (18) is connected to a three-way valve (7).

3. The smoke exhaust mechanism of a light-fired kiln according to claim 2, characterized in that: The smoke treatment mechanism (8) comprises a first air guide pipe (21) fixedly connected to one end of the three-way valve (7), the end of the first air guide pipe (21) is fixedly connected to a heat recovery device (22), the side of the heat recovery device (22) is fixedly connected to a second air guide pipe (23), the end of the second air guide pipe (23) is fixedly connected to a purifier (24), and a smoke outlet pipe (25) is arranged on the outside of the purifier (24).

4. The smoke exhaust mechanism of a light-firing kiln according to claim 1, characterized in that: A flow control valve (4) is fixedly installed in the middle of the smoke exhaust pipe (3).

5. The smoke exhaust mechanism of a light-firing kiln according to claim 1, characterized in that: Elastic tubes (16) are fixedly connected to both sides of the scraper (12), and the ends of the two elastic tubes (16) are respectively connected to the inner wall of the dust removal box (9), and the elastic tubes (16) are sleeved on the outside of the reciprocating screw rod (11).

6. The smoke exhaust mechanism of a light-firing kiln according to claim 1, characterized in that: The top surface and the bottom surface of the scraper (12) are respectively in contact with the inner wall of the filter box (5), and the bottom surface of the filter box (5) is fixedly connected to a plurality of supporting legs (14).

7. The smoke exhaust mechanism of a light-firing kiln according to claim 1, characterized in that: The outer sides of the two dust removal boxes (9) are respectively hinged with sealed box doors (15).

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