CN210292767U

CN210292767U - Burning type roasting furnace

Info

Publication number: CN210292767U
Application number: CN201920864051.7U
Authority: CN
Inventors: 廖振廷
Original assignee: Liujing Machinery Equipment Liyang Co ltd
Current assignee: Liujing Machinery Equipment Liyang Co ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-04-10
Anticipated expiration: 2029-06-11

Abstract

The utility model relates to a burning type bakes burning furnace over a slow fire, including furnace body and combustor, furnace body from the top down has set gradually and has divided sand zone, combustion area, heat transfer district and sand discharge district, on the furnace body with combustion area correspondence department is provided with combustor and high-pressurepipe, high-pressurepipe set up in the below of combustor, the high-pressurepipe level sets up. The utility model discloses burning zone position of burning a burning furnace over a slow fire is provided with high-pressurepipe, and two adjacent high-pressurepipe's the perpendicular setting of direction of admitting air, so high-pressurepipe forms helical motion in the combustion area, drives the waste sand and carries out helical motion, realizes the purpose of evenly stirring waste sand, makes the waste sand of keeping away from the combustor near the combustor under the effect of high-pressurepipe to the waste sand burning that the messenger falls into in the combustion area is more even.

Description

Burning type roasting furnace

Technical Field

The utility model belongs to the technical field of bake burning furnace equipment over a slow fire, specifically be a burning type bakes burning furnace over a slow fire.

Background

In the casting industry, a large amount of waste sand can be generated, which causes great pollution and harm to the environment, and the waste of resources is serious, and the waste sand is recycled, which has the problems of casting cost, resource saving, energy consumption, environmental protection and the like. The roaster can burn combustible materials such as resin mixed in the waste sand, the waste sand can be recycled after complete combustion, the utilization rate is high, and the treated waste sand is unqualified and cannot be recycled due to uneven combustion of the waste sand when the waste sand is recycled.

The high-pressure gas in the hearth of the existing roasting furnace moves up and down, so that waste sand needing to be treated also moves up and down, the waste sand close to a burner is better heated than other places, the waste sand in the whole combustion area is not uniformly combusted, the roasting effect is unsatisfactory, and the existing exhaust port is not provided with an explosion-proof device, so that the pressure in the hearth is too high, and the use safety of the roasting furnace is influenced.

SUMMERY OF THE UTILITY MODEL

For solving the problem in the technical background, the utility model provides a burning type bakes burning furnace over a slow fire makes the waste sand can the intensive combustion in the combustion area through set up high-pressurepipe in the combustion area, reaches the purpose of regeneration.

The utility model adopts the following technical scheme: the utility model provides a burning type bakes burning furnace over a slow fire, includes furnace body and combustor, and the furnace body from the top down has set gradually and has divided sand zone, combustion area, heat transfer district and sand discharge district, and the department that corresponds with the combustion area is provided with combustor and high-pressurepipe on the furnace body, and high-pressurepipe sets up in the below of combustor, and high-pressurepipe level sets up.

Furthermore, the furnace body is cylindrical, and the high-pressure air pipe runs through the wall thickness of the furnace body and is communicated with the combustion area.

Furthermore, 4 high-pressure air pipes are uniformly distributed on the furnace body, and the air inlet directions of every two adjacent high-pressure air pipes are vertically arranged.

Furthermore, the intersection point of the air inlet directions of the two adjacent high-pressure air pipes is positioned on the inner wall of the furnace body.

Furthermore, the top of the furnace body is provided with an explosion-proof device, the explosion-proof device is of a T-shaped structure, one end of the T-shaped structure, which is horizontally communicated, is connected with the furnace body in a sealing mode through a flange, the other end of the T-shaped structure is an explosion-proof opening, a cover body is arranged on the explosion-proof opening and is connected with the explosion-proof device in a hinged mode, the side opening of the T-shaped structure is an air exhaust port, and a negative pressure meter is.

Furthermore, the furnace body is provided with at least one thermometer at the position corresponding to the combustion area, and the thermometers are uniformly distributed on the outer wall of the furnace body.

Furthermore, a detection port is arranged at the position, corresponding to the combustion area, on the furnace body, and the detection port is arranged opposite to the burner.

Furthermore, the corresponding department with the sand separating area on the furnace body is equipped with first sand divider and second sand divider, and first sand divider and second sand divider all are located the axle center position of furnace body, and first sand divider is located the top of furnace body, and second sand divider is located under first sand divider, and second sand divider is conical structure.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses burning zone position of burning a burning furnace over a slow fire is provided with high-pressurepipe, and two adjacent high-pressurepipe's the perpendicular setting of direction of admitting air, and high-pressurepipe forms helical motion in the combustion area, and gas motion drives the waste sand and carries out helical motion, realizes the purpose of evenly stirring waste sand, makes the waste sand of keeping away from the combustor near the combustor under the effect of high-pressurepipe to the waste sand burning that the messenger falls into in the combustion area is more even.

2. The utility model discloses the top of burning a burning furnace over a slow fire is equipped with explosion-proof equipment, is equipped with the negative pressure table on the explosion-proof equipment, and when furnace internal gas pressure was greater than the setting value, the explosion-proof mouth was opened, carries out the pressure release to make to burn burning a burning furnace under normal atmospheric pressure work, explosion-proof equipment's setting further strengthens the safety in utilization of burning a burning furnace over a slow fire.

Drawings

For a clearer explanation of 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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the roasting furnace of the present invention;

FIG. 2 is a top view of the roasting furnace of the present invention;

fig. 3 is a schematic view of the explosion-proof device of the roasting furnace of the present invention.

The method comprises the following steps of 1-sand separating area, 11-first sand separator, 12-second sand separator, 13-feeding port, 14-exhaust port, 15-explosion-proof port, 16-negative pressure gauge, 2-combustion area, 21-burner, 22-detection port, 23-high pressure air pipe, 24-thermometer, 3-heat exchange area and 4-sand discharging area.

Detailed Description

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

As shown in fig. 1-2, the utility model provides a burning type bakes burning furnace over a slow fire, including furnace body and combustor 21, the furnace body from the top down has set gradually and has divided sand zone 1, combustion area 2, heat transfer district 3 and sand discharge area 4, correspond department with combustion area 2 on the furnace body and be provided with combustor 21 and high-pressurepipe 23, high-pressurepipe 23 sets up in combustor 21's below, and is close combustor 21, high-pressurepipe 23 level sets up, and the purpose that this embodiment set up high-pressurepipe 23 is that the waste sand of keeping away from combustor 21 blows to being close combustor 21, makes the burning of waste sand more even.

Specifically, the furnace body is cylindrical, the high-pressure air pipe 23 penetrates through the wall thickness of the furnace body and is communicated with the combustion area 2, the air inlet direction of the high-pressure air pipe 23 is arranged away from the axis of the furnace body (namely, the air inlet direction of the high-pressure air pipe does not pass through the center of the cross section of the furnace body), specifically, the high-pressure air pipe is arranged in a manner that the high-pressure air pipe can form spiral airflow in the combustion area 2, so that waste sand is driven to move ceaselessly in the combustion area 2, the waste sand falling into the combustion area 2 is enabled to be close to the burner 21, and finally, the waste sand achieves the purpose of full combustion, more specifically, the high-pressure air pipe 23 is arranged at the lower position of the burner and is close to the burner, after scattered waste sand falls into the combustion area 2, the waste sand close to the burner 21 falls after being combusted, and meets the spiral high-pressure airflow in the falling process, the waste sand is spiral and ascends under the action of the high, on the other hand, a part of the waste sand can move up and down to perform more sufficient combustion.

Preferably, the number of the high-pressure air pipes 23 on the furnace body is 4, the high-pressure air pipes are uniformly distributed on the furnace body, the air inlet directions of every two adjacent high-pressure air pipes 23 are vertical, the cross points of the air inlet directions of the 4 high-pressure air pipes form a square shape in the furnace body, and the center of the square shape is superposed with the center of the cross section of the furnace body; more preferably, the intersection point of the air inlet directions of the two adjacent high-pressure air pipes is positioned on the inner wall of the furnace body, so that the high-pressure air flow forms a spiral in the combustion zone 2 with the largest radius, and the waste sand close to the inner wall of the furnace body can also perform spiral motion under the action of the high-pressure air flow; high-pressure draught forms helical motion in combustion area 2 to drive the waste sand and carry out helical motion, realize the purpose of evenly stirring waste sand, make the waste sand of keeping away from combustor 21 be close to combustor 21 under high-pressure draught's effect, make the waste sand burning that falls into in the combustion area more even.

Specifically, as shown in fig. 3, an explosion-proof device is arranged at the top of the furnace body, the explosion-proof device is of a T-shaped structure, one end of the T-shaped structure, which is horizontally penetrated, is hermetically connected with the furnace body through a flange, the other end of the T-shaped structure is an explosion-proof opening 15, a cover body is arranged at the explosion-proof opening 15 and is hinged with the explosion-proof device, an opening in the side surface of the T-shaped structure is an exhaust port 14, and a negative pressure gauge 16 is arranged on the. The purpose of arranging the negative pressure gauge 16 on the explosion-proof device is as follows: when the air pressure in the furnace body is greater than a set value, the explosion-proof opening is opened, the pressure is released, so that the roasting furnace works under normal air pressure, and the use safety of the roasting furnace can be enhanced due to the arrangement of the explosion-proof device; it should be noted that the pressure in the furnace of this embodiment is negative pressure sometimes, is the malleation sometimes, and under normal operating condition, the explosion vent is in under the closed condition, only through gas vent exhaust steam, before pressure does not reach the explosion-proof point, and the explosion-proof vent has slightly to open under the fluctuation of pressure, and after reaching the explosion-proof point, the explosion-proof vent can be opened automatically and the pressure release to eliminate the potential safety hazard of roasting the furnace explosion.

Preferably, a fan (not shown) is arranged at the exhaust port 14, so that hot gas in the furnace body can be exhausted better, and the safety hazard of the operation of the roasting furnace is reduced.

Specifically, at least one thermometer 24 is arranged on the furnace body corresponding to the combustion area 2, and the thermometers 24 are uniformly distributed on the outer wall of the furnace body; in the embodiment, the temperature of roasting in the furnace body can be accurately controlled through the thermometer 24, and in practical operation, when the temperature of the waste sand is 580-680 ℃, organic matters mixed in the waste sand can be burnt, so that the temperature in the furnace body is controlled through the thermometer, specifically, when the temperature is 670 ℃, the fire is raised, when the temperature is 680 ℃, the fire is extinguished, and when the temperature is 690 ℃.

Specifically, a detection port 22 is arranged at a position on the furnace body corresponding to the combustion area 2, the detection port 22 is arranged opposite to the burner 21, and when the roasting furnace fails, the detection port 22 can be opened for inspection and overhaul.

Specifically, a first sand separator 11 and a second sand separator 12 are arranged at a position, corresponding to the sand separating area 1, on the furnace body, the first sand separator 11 and the second sand separator 12 are both located at the axis position of the furnace body, the first sand separator 11 is located at the top end of the furnace body, the second sand separator 12 is located under the first sand separator 11, the second sand separator 12 is of a conical structure, a feeding port 13 is formed in the side face of the first sand separator 11, two sand separators are arranged at the top of the roasting furnace, a sand outlet of the first sand separator 11 can rotate around the axis of the furnace body in a circumferential manner, waste sand falls into the outer surface of the second sand separator 12 after being separated by the first sand separator 11 to be further separated, the diameter of the cross section of the second sand separator 12 is sequentially increased from top to bottom, so that the waste sand can be fully dispersed after entering the combustion area, and the roasting regeneration effect is more uniform.

The present invention has been further described with reference to specific embodiments, but it should be understood that the specific description herein should not be construed as limiting the spirit and scope of the present invention, and that various modifications to the above-described embodiments, which would occur to persons skilled in the art after reading this specification, are within the scope of the present invention.

Claims

1. The combustion type roasting furnace is characterized by comprising a furnace body and a burner, wherein a sand separating area, a combustion area, a heat exchange area and a sand discharge area are sequentially arranged on the furnace body from top to bottom, the burner and a high-pressure air pipe are arranged on the furnace body corresponding to the combustion area, the high-pressure air pipe is arranged below the burner, and the high-pressure air pipe is horizontally arranged.

2. The furnace of claim 1, wherein the furnace body is cylindrical and the plenum is in communication with the combustion zone through a wall thickness of the furnace body.

3. The combustion type roasting furnace of claim 2, wherein 4 high-pressure gas pipes are uniformly distributed on the furnace body, and the gas inlet direction of every two adjacent high-pressure gas pipes is vertical.

4. The combustion roaster of claim 3, wherein an intersection of the air inlet directions of two adjacent high pressure air pipes is located on the inner wall of the furnace body.

5. The combustion type roasting furnace of claim 1, wherein an explosion-proof device is arranged at the top of the furnace body, the explosion-proof device is of a T-shaped structure, one horizontally-penetrating end of the T-shaped structure is hermetically connected with the furnace body through a flange, the other end of the T-shaped structure is an explosion-proof opening, a cover body is arranged on the explosion-proof opening, the cover body is hinged with the explosion-proof device, an opening in the side surface of the T-shaped structure is an exhaust port, and a negative pressure gauge is arranged on the outer wall of the exhaust port.

6. The furnace of claim 1, wherein the furnace body is provided with at least one thermometer at a location corresponding to the combustion zone, the thermometers being disposed uniformly on an outer wall of the furnace body.

7. The furnace of claim 1, wherein a detection port is disposed on the furnace body corresponding to the combustion zone, and the detection port is disposed opposite to the burner.

8. The combustion type roasting furnace of claim 1, wherein a first sand separator and a second sand separator are arranged on the furnace body corresponding to the sand separation area, the first sand separator and the second sand separator are both positioned at the axial center of the furnace body, the first sand separator is positioned at the top end of the furnace body, the second sand separator is positioned right below the first sand separator, and the second sand separator is in a conical structure.