Kiln head waste gas extraction device for multi-layer drying kiln

Abstract

The utility model belongs to the technical field of drying kilns, and particularly discloses a kiln head waste gas extraction device for a multilayer drying kiln, which comprises a mounting frame, a square box piece is arranged in the mounting frame, a waste gas cavity is arranged in the square box piece, a plurality of conveying roller sets are arranged in the square box piece from top to bottom, and a feeding area is formed between every two adjacent conveying roller sets. An air suction pipe is arranged in the feeding area, the two ends of the air suction pipe extend into a waste gas cavity in the square box part, a plurality of air suction holes are formed in the outer surface of the air suction pipe, a first exhaust port is formed in the upper surface of the square box part, and a second exhaust port is formed in the top surface of the mounting frame; when waste gas is sucked, the waste gas can be sucked into the gas suction pipe from the gas suction hole, then enters the square box piece from the gas suction pipe, is exhausted to the second exhaust port through the first exhaust port of the square box piece and finally is exhausted to the outside through the second exhaust port, and when a large amount of waste gas appears in the drying kiln, the waste gas can be effectively prevented from escaping to the outside from the kiln head. The external environment pollution is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of drying kilns, in particular to a kiln head exhaust gas extraction device for a multi-layer drying kiln. Background Art

[0002] Drying kilns are commonly used in ceramic production and processing. Among them, multi-layer rapid drying kilns are important supporting equipment in ceramic production that adopts convection drying. Its function is to use the hot air from the firing kiln and the preheated air from the flue gas heat exchange, as well as the high-temperature flue gas supplemented by the burner combustion to form a continuously circulating and disturbed drying air in the drying kiln to convection dry the green body. However, in existing multi-layer drying kilns, the exhaust gas extraction equipment is often directly installed on the top or side wall of the kiln, so as to extract the exhaust gas inside the kiln by side extraction or top extraction. When the output of the drying kiln increases, the exhaust gas generated inside the kiln will continue to increase. However, only using the side extraction or top extraction method cannot quickly extract the large amount of exhaust gas generated by the drying kiln due to large-scale production, which will cause the exhaust gas to escape from the kiln head of the drying kiln to the outside, thereby polluting the equipment outside the kiln and the external environment, and even seriously affecting the health safety of the kiln operators. Utility Model Content

[0003] In order to overcome the defects of the prior art, the utility model provides a kiln head exhaust gas extraction device for a multi-layer drying kiln.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a kiln head exhaust gas extraction device for a multi-layer drying kiln, comprising a mounting frame, a square box member is arranged inside the mounting frame, an exhaust gas cavity is arranged inside the square box member, a plurality of conveying roller groups are arranged from top to bottom inside the square box member, the two ends of the conveying roller groups extend to both sides and pass through the square box member and the mounting frame, and a feeding area is formed between adjacent conveying roller groups, an air intake pipe is arranged inside the feeding area, the two ends of the air intake pipe extend into the exhaust gas cavity inside the square box member, so that the air outlets at both ends of the air intake pipe are connected to the exhaust gas cavity, a plurality of air intake holes are provided on the outer surface of the air intake pipe, a first exhaust port is provided on the upper surface of the square box member, a second exhaust port is provided on the top surface of the mounting frame, and the first exhaust port faces the second exhaust port.

[0005] Further description of this solution: gas regulating components are set at both ends of the intake pipe, and the gas regulating components include a baffle, a push rod, a positioning sleeve and a limit block. The baffle is set at the air outlet of the intake pipe, and a push rod is set at the end of the baffle away from the intake pipe. The end of the push rod away from the baffle passes through the square box and the mounting frame to the outside, and the push rod is located at the outer outer surface of the middle section of the square box and is sleeved with a positioning sleeve, and a limit block is set on the surface of the positioning sleeve.

[0006] Further description of this solution: an exhaust hood is provided at the second exhaust port, an air inlet end of the exhaust hood is connected to the second exhaust port, and an exhaust adjustment component is provided at the air outlet end of the exhaust hood.

[0007] Specifically, the exhaust adjustment assembly includes a support frame, a push plate and a handle. The support frame is provided with an exhaust hood outlet end. A through hole is opened at one end of the support frame close to the exhaust hood outlet end. A push plate is provided at the through hole. One side of the push plate is connected to the handle. A limit fence is provided on one side of the support frame.

[0008] Further description of this solution: both ends of the bottom surface of the square box are provided with multiple groups of supporting columns.

[0009] Preferably, multiple groups of thermal insulation rock wool parts are arranged between the square box part and the mounting frame.

[0010] The beneficial effects of the utility model are as follows: the device is first installed at the kiln head of the drying kiln, and an air duct pipe is provided at the second exhaust port, and subsequently the device is connected to an external exhaust gas extraction fan through the air duct pipe. Therefore, when a large amount of exhaust gas occurs in the drying kiln due to mass production, the exhaust gas extraction fan is first started, and the suction pipe is provided in the feeding area, so that the exhaust gas at the kiln head can be sucked into the suction pipe from the suction hole, and then enter the square box from the suction pipe, and then be discharged to the second exhaust port through the first exhaust port of the square box, and finally be discharged to the external exhaust gas extraction fan through the second exhaust port. Therefore, when a large amount of exhaust gas occurs in the drying kiln, the exhaust gas can be effectively prevented from escaping from the kiln head to the outside, thereby reducing the pollution to the equipment outside the kiln and the external environment, and ensuring the health safety of the kiln operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the overall structure of the kiln head exhaust gas extraction device of the utility model Figure 1 ;

[0012] Figure 2 This is the overall structural front view of the kiln head exhaust gas extraction device of the utility model;

[0013] Figure 3 This is an exploded diagram of the structure of the exhaust gas extraction device of the present invention;

[0014] Figure 4 This is a schematic diagram of the combined structure of the square box member, the conveying roller group and the suction pipe of the utility model;

[0015] Figure 5 This is a cross-sectional view of the combined structure of the square box and the suction pipe of the utility model;

[0016] Figure 6 for Figure 5 A magnified view of the structure at point A;

[0017] Figure 7 This is a schematic structural diagram of the gas regulating assembly of the present utility model;

[0018] Figure 8 This is a schematic diagram of the structure of the exhaust adjustment component of the utility model Figure 1 ;

[0019] Figure 9 This is an exploded diagram of the structure of the exhaust adjustment component of the present invention.

[0020] As shown in the figure: mounting frame 1, square box 2, exhaust gas cavity 21, conveying roller group 3, feeding area 4, suction pipe 5, suction hole 51, first exhaust port 6, second exhaust port 7, gas regulating assembly 8, baffle 81, push rod 82, positioning sleeve 83, limit block 84, exhaust hood 9, exhaust regulating assembly 10, support frame 101, through hole 1011, push plate 102, handle 103, limit bar 104, support column 11, thermal insulation rock wool component 12. DETAILED DESCRIPTION

[0021] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0022] As attached Figure 1 、 2 , 3, 4, 5, 6, 7, 8 and 9, the utility model provides a kiln head exhaust gas extraction device for a multi-layer drying kiln, comprising a mounting frame 1, a square box member 2 is provided inside the mounting frame 1, an exhaust gas cavity 21 is provided inside the square box member 2, multiple groups of conveying roller groups 3 are arranged from top to bottom inside the square box member 2, both ends of the conveying roller groups 3 extend to both sides and pass through the square box member 2 and the mounting frame 1, and a feeding area 4 is formed between adjacent conveying roller groups 3, so that the products produced by the drying kiln can enter the feeding area 4 and subsequently be sent out of the kiln head exhaust gas extraction device through the conveying roller groups 3;

[0023] Then, an air intake pipe 5 is provided inside the feeding area 4, and both ends of the air intake pipe 5 extend into the exhaust gas cavity 21 inside the square box 2, so that the air outlets at both ends of the air intake pipe 5 are connected to the exhaust gas cavity 21, and a plurality of air intake holes 51 are provided on the outer surface of the air intake pipe 5, a first exhaust port 6 is provided on the upper surface of the square box 2, and a second exhaust port 7 is provided on the top surface of the mounting frame 1, and the first exhaust port 6 faces the second exhaust port 7. Subsequently, an external air duct pipe is provided at the second exhaust port 7, and subsequently connected to the external exhaust gas extraction fan through the external air duct pipe.

[0024] In this way, when the drying kiln has completed drying a large number of products, part of the flue gas will be discharged from the exhaust mechanism of the kiln body, and part of the flue gas will be discharged from the kiln head. In order to prevent the flue gas from being discharged from the kiln head of the drying kiln: first install the device at the kiln head of the drying kiln, part of the flue gas will enter the feeding area 4, and then immediately start the external exhaust gas extraction fan, so that the suction pipe 5 set in the feeding area can perform the suction operation, so that the exhaust gas suction hole 51 in the feeding area 4 can be sucked into the suction pipe 5, and then enter the exhaust gas cavity 21 inside the square box 2 from the suction pipe 5, and then be discharged to the second exhaust port 7 through the first exhaust port 6 of the square box 2, and finally be discharged to the external exhaust gas extraction fan through the second exhaust port 7. In this way, when a large amount of exhaust gas appears in the drying kiln, it can effectively prevent the exhaust gas from escaping from the kiln head to the outside, reduce the pollution to the equipment outside the kiln and the external environment, and ensure the health safety of the kiln operators.

[0025] As attached Figure 1 、 2 As shown in Figures 3, 4, 5, 6 and 7, a gas regulating assembly 8 is subsequently set at both ends of the intake pipe 5. The gas regulating assembly 8 includes a baffle 81, a push rod 82, a positioning sleeve 83 and a limit block 84. The baffle 81 is set at the air outlet of the intake pipe 5. A push rod 82 is set at the end of the baffle 81 away from the intake pipe 5. The end of the push rod 82 away from the baffle 81 passes through the square box 2 and the mounting frame 1 to extend outward. The push rod 82 is located at the outer outer surface of the middle section inside the square box 2 and is sleeved with a positioning sleeve 83. A limit block 84 is set on the outer surface of the positioning sleeve 83.

[0026] When it is necessary to adjust the flue gas intake flow rate: the push rod 82 can be pushed so that the push rod 82 can push the baffle 81 towards or away from the air outlet of the intake pipe 5, thereby controlling the gas flow rate of the air outlet of the intake pipe 5. In this way, the flue gas intake flow rate can be controlled by manual operation, which can improve the practicality of the device.

[0027] As attached Figure 1 、 2, 3, 8 and 9, an exhaust hood 9 is provided at the second exhaust port 7, the air inlet end of the exhaust hood 9 is communicated with the second exhaust port 7, and an exhaust adjustment component 10 is provided at the air outlet end of the exhaust hood 9. The exhaust adjustment component 10 includes a support frame 101, a push plate 102 and a handle 103. The support frame 101 is provided with the air outlet end of the exhaust hood 9, and a through hole 1011 is opened at one end of the support frame 101 close to the air outlet end of the exhaust hood 9. A push plate 102 is provided at the through hole 1011, and a handle 103 is connected to one side of the push plate 102. A limit fence 104 is provided on one side of the support frame 101;

[0028] When it is necessary to adjust the exhaust gas flow rate discharged from the second exhaust port 7: the handle 103 can be pulled manually, and the push plate 102 can be moved by the handle 103 to open or close the through hole 1011, and the size of the opening of the through hole 1011 can be controlled. Because the through hole 1011 is connected to the second exhaust port 7, the size of the opening of the through hole 1011 can be controlled to effectively control the size of the exhaust gas flow rate of the second exhaust port 7, thereby controlling the exhaust gas flow rate, thereby improving the practicality of the device.

[0029] As attached Figure 1 、 2 As shown in Figures 3, 4 and 5, multiple groups of supporting columns 11 are provided at both ends of the bottom surface of the square box 2. The supporting columns 11 can support the square box 2 to prevent the square box 2 from tipping over during operation.

[0030] Preferably, a plurality of groups of thermal insulation rock wool pieces 12 are provided between the square box member 2 and the mounting frame 1 to ensure thermal insulation inside the kiln head exhaust gas extraction device.

[0031] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is clear to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A kiln head exhaust gas extraction device for a multi-layer drying kiln, comprising a mounting frame (1), characterized in that: A square box (2) is provided inside the mounting frame (1), and an exhaust gas cavity (21) is provided inside the square box (2). A plurality of conveying roller groups (3) are arranged inside the square box (2) from top to bottom, and both ends of the conveying roller groups (3) extend to both sides and pass through the square box (2) and the mounting frame (1). A feeding area (4) is formed between adjacent conveying roller groups (3). An air intake pipe (5) is provided inside the feeding area (4), and both ends of the air intake pipe (5) extend into the exhaust gas cavity (21) inside the square box (2) so that the air outlets at both ends of the air intake pipe (5) are connected to the exhaust gas cavity (21). A plurality of air intake holes (51) are provided on the outer surface of the air intake pipe (5), a first exhaust port (6) is provided on the upper surface of the square box (2), and a second exhaust port (7) is provided on the top surface of the mounting frame (1), and the first exhaust port (6) faces the second exhaust port (7).

2. The kiln head exhaust gas extraction device for a multi-layer drying kiln according to claim 1, characterized in that: Gas regulating components (8) are provided at both ends of the suction pipe (5), and the gas regulating components (8) include a baffle (81), a push rod (82), a positioning sleeve (83) and a limit block (84). The baffle (81) is provided at the air outlet of the suction pipe (5), and a push rod (82) is provided at one end of the baffle (81) away from the suction pipe (5). The end of the push rod (82) away from the baffle (81) passes through the square box (2) and the mounting frame (1) and extends to the outside. The push rod (82) is located at the outer outer surface of the middle section of the square box (2) and is sleeved with a positioning sleeve (83). A limit block (84) is provided on the outer surface of the positioning sleeve (83).

3. The kiln head exhaust gas extraction device for a multi-layer drying kiln according to claim 1, characterized in that: An exhaust hood (9) is provided at the second exhaust port (7), an air inlet end of the exhaust hood (9) is connected to the second exhaust port (7), and an exhaust adjustment component (10) is provided at the air outlet end of the exhaust hood (9).

4. The kiln head exhaust gas extraction device for a multi-layer drying kiln according to claim 3, characterized in that: The exhaust adjustment assembly (10) comprises a support frame (101), a push plate (102) and a handle (103); the support frame (101) is provided with an exhaust air outlet end of the exhaust air hood (9); a through hole (1011) is provided at one end of the support frame (101) close to the exhaust air outlet end of the exhaust air hood (9); a push plate (102) is provided at the through hole (1011); one side of the push plate (102) is connected to the handle (103); and a limit fence (104) is provided on one side of the support frame (101).

5. The kiln head exhaust gas extraction device for a multi-layer drying kiln according to claim 1, characterized in that: Both ends of the bottom surface of the square box (2) are provided with multiple groups of supporting columns (11).

6. The kiln head exhaust gas extraction device for a multi-layer drying kiln according to claim 1, characterized in that: A plurality of groups of thermal insulation rock wool pieces (12) are arranged between the square box piece (2) and the mounting frame (1).

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