Furnace end with good gas sealing effect

Abstract

The utility model relates to a furnace end, in particular to a furnace end with a good gas sealing effect, which comprises a main body, an outer ring central tube and an inner ring central tube, the main body is provided with an outer ring gas channel and an inner ring gas channel, the output end of the outer ring gas channel is provided with a first step, and the middle part of the first step is provided with a first through hole; a first flange extending upwards is arranged on the inner side wall of the first through hole; the outer ring center pipe comprises a first pipe part and a first limiting ring arranged at the lower end of the first pipe part, the first limiting ring is welded to the lower side face of the first step, and the first turned edge is welded to the outer side wall of the first pipe part. The first step is arranged at the output end of the outer ring air channel, the first through hole is formed in the middle of the first step, the first turnup extending upwards is arranged on the inner side wall of the first through hole, the bottom of the outer ring center pipe is welded to the lower side face of the first step, the first turnup is welded to the outer side wall of the outer ring center pipe, and then the L-shaped welding position is formed. And the air sealing effect of the outer ring air channel is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a furnace head, in particular to a furnace head with good gas sealing effect. BACKGROUND

[0002] The patent with the publication number CN212108387U discloses a furnace head, and the furnace head body comprises upper layer stamping sheets, middle layer stamping sheets and lower layer stamping sheets which are sequentially spliced in the vertical direction, a base middle splicing groove is arranged on the middle layer stamping sheets, and a hollow inner sleeve pipe (equivalent to a center pipe) is fixedly installed in the middle part of the base middle splicing groove. Figure 2 And Figure 3 The technology sets a convex ring at the lower end of the hollow outer sleeve pipe, sets a through hole on the upper layer stamping sheet, and the hollow outer sleeve pipe passes through the through hole from bottom to top, the convex ring abuts below the through hole, and the upper end face of the convex ring is welded on the lower end face of the upper layer stamping sheet, so that the installation of the hollow outer sleeve pipe is completed.

[0003] However, in actual application, since the connecting surface between the hollow outer sleeve pipe and the upper layer stamping sheet is limited to a single horizontal plane, the gas in the outer ring gas channel is easy to overflow from the connecting surface, and the gas sealing effect of the outer ring gas channel has certain improvement space. SUMMARY

[0004] To solve the above technical problems, the purpose of the utility model is to provide a furnace head with good gas sealing effect, so as to improve the gas sealing effect of the outer ring gas channel.

[0005] The utility model discloses a technical scheme for solving the problem: a furnace head with good gas sealing effect, comprising a main body, an outer ring center pipe and an inner ring center pipe, the main body is provided with an outer ring gas channel and an inner ring gas channel, the output end of the outer ring gas channel is provided with a first step, the middle part of the first step is provided with a first through hole, and the inner side wall of the first through hole is provided with a first flange extending upwards;The outer ring center pipe comprises a first pipe part and a first limiting ring arranged at the lower end of the first pipe part, the first limiting ring is welded on the lower side of the first step, and the first flange is welded on the outer side wall of the first pipe part.

[0006] As a further improvement of the above technical scheme, the output end of the inner ring gas channel is provided with a second step, the middle part of the second step is provided with a second through hole, the inner side wall of the second through hole is provided with a second flange extending upwards, the inner ring center pipe comprises a second pipe part and a second limiting ring arranged at the lower end of the second pipe part, the second limiting ring is welded on the lower side of the second step, and the second flange is welded on the outer side wall of the second pipe part.

[0007] As a further improvement of the above technical solution, the main body is riveted by the upper layer stamping sheet and the lower layer stamping sheet, and the outer ring center tube and the inner ring center tube are welded on the upper layer stamping sheet.

[0008] As a further improvement of the above technical solution, the diameter of the first limiting ring is greater than the diameter of the first through hole, the diameter of the second limiting ring is greater than the diameter of the second through hole, and the outer ring center tube and the inner ring center tube pass through the upper layer stamping sheet from bottom to top and are welded with the upper layer stamping sheet.

[0009] The utility model discloses the beneficial effect is: the utility model discloses a first step is established to the output end of outer ring air channel, the middle part of first step sets up first through -hole, and the inboard wall of first through -hole sets up the first flanging that extends upwards, and the bottom of outer ring center tube is welded on the downside of first step, and the first flanging is welded on the outboard wall of outer ring center tube, and then form L type welding position, improve the air -tight effect of outer ring air channel. BRIEF DESCRIPTION OF DRAWINGS

[0010] The utility model makes further explanation and description with the help of the following description of specific embodiment and attached drawing.

[0011] Figure 1 It is the overall structure of the utility model and sectional view;

[0012] Figure 2 It is Figure 1 It is the structure enlarged diagram of A place in middle;

[0013] Figure 3 It is Figure 1 It is the structure enlarged diagram of B place in middle;

[0014] Figure 4 It is the structure exploded schematic view of the utility model;

[0015] Figure 5 It is the overall structure schematic view of the utility model;

[0016] In the drawing: 1-main body, 11-upper layer stamping sheet, 111-first step, 1111-first through -hole, 1112-first flanging, 112-second step, 1121-second through -hole, 1122-second flanging, 12-lower layer stamping sheet, 13-outer ring air channel, 14-inner ring air channel, 2-outer ring center tube, 21-first pipe part, 22-first limiting ring, 3-inner ring center tube, 31-second pipe part, 32-second limiting ring. DETAILED DESCRIPTION

[0017] The detailed embodiments of the present application will be described in this section, and the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0018] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and cannot be understood as a limitation on the present application.

[0019] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing and connecting should be understood in a broad sense, and the skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0020] Referring to Figures 1 to 5 A furnace end with good gas sealing effect, comprising a main body 1, an outer ring center pipe 2 and an inner ring center pipe 3, the main body 1 is provided with an outer ring air channel 13 and an inner ring air channel 14, the output end of the outer ring air channel 13 is provided with a first step 111, the middle part of the first step 111 is provided with a first through hole 1111, the inner side wall of the first through hole 1111 is provided with a first flange 1112 extending upward, so that the first flange 1112 is perpendicular to the step; the outer ring center pipe 2 comprises a first pipe part 21 and a first limiting ring 22 arranged at the lower end of the first pipe part 21, the diameter of the first limiting ring 22 is greater than the diameter of the first through hole 1111, the first limiting ring 22 is welded on the lower side of the first step 111, and the first flange 1112 is welded on the outer side wall of the first pipe part 21, thereby forming an L-shaped welding position and improving the gas sealing effect of the outer ring air channel 13.

[0021] In the preferred embodiment, the output end of the inner ring air channel 14 is provided with a second step 112, the middle part of the second step 112 is provided with a second through hole 1121, the inner side wall of the second through hole 1121 is provided with a second flange 1122 extending upward, the second flange 1122 is perpendicular to the second step 112; the inner ring center tube 3 comprises a second tube part 31 and a second limiting ring 32 arranged at the lower end of the second tube part 31, the diameter of the second limiting ring 32 is greater than the diameter of the second through hole 1121, the second limiting ring 32 is welded on the lower side of the second step 112, and the second flange 1122 is welded on the outer side wall of the second tube part 31, thereby forming an L-shaped welding position, improving the air sealing effect of the inner ring air channel 14, and further providing the air sealing effect of the whole furnace end.

[0022] In the preferred embodiment, the main body 1 is riveted by the upper stamping sheet 11 and the lower stamping sheet 12, the first step 111 and the second step 112 are arranged on the upper stamping sheet 11, and the outer ring center tube 2 and the inner ring center tube 3 pass through the upper stamping sheet 11 from bottom to top and are welded with the upper stamping sheet 11, that is, the outer ring center tube 2 and the inner ring center tube 3 are welded on the upper stamping sheet 11, and the outer ring center tube 2 and the inner ring center tube 3 are separated from each other, thereby forming an air channel separated furnace end.

[0023] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation, direct or indirect application in other related technical fields under the utility model concept of the utility model, and the contents of the utility model specification and drawings are included in the patent protection range of the utility model.

Claims

1. A burner head with good gas sealing effect, comprising a main body (1), an outer ring central pipe (2) and an inner ring central pipe (3), wherein the main body (1) is provided with an outer ring gas channel (13) and an inner ring gas channel (14), characterized in that: the output end of the outer ring gas channel (13) is provided with a first step (111), the middle part of the first step (111) is provided with a first through hole (1111), and the inner side wall of the first through hole (1111) is provided with a first flange (1112) extending upward; the outer ring central pipe (2) comprises a first pipe part (21) and a first limiting ring (22) arranged at the lower end of the first pipe part (21), the first limiting ring (22) is welded to the lower side of the first step (111), and the first flange (1112) is welded to the outer side wall of the first pipe part (21).

2. The burner head with good gas sealing effect according to claim 1, characterized in that: the output end of the inner ring gas channel (14) is provided with a second step (112), the middle part of the second step (112) is provided with a second through hole (1121), and the inner side wall of the second through hole (1121) is provided with a second flange (1122) extending upward; the inner ring central pipe (3) comprises a second pipe part (31) and a second limiting ring (32) arranged at the lower end of the second pipe part (31), the second limiting ring (32) is welded to the lower side of the second step (112), and the second flange (1122) is welded to the outer side wall of the second pipe part (31).

3. The burner head with good gas sealing effect according to claim 2, characterized in that: the main body (1) is riveted by an upper layer of punched sheet (11) and a lower layer of punched sheet (12), and the outer ring central pipe (2) and the inner ring central pipe (3) are both welded to the upper layer of punched sheet (11).

4. The burner head with good gas sealing effect according to claim 3, characterized in that: the diameter of the first limiting ring (22) is greater than the diameter of the first through hole (1111), the diameter of the second limiting ring (32) is greater than the diameter of the second through hole (1121), and the outer ring central pipe (2) and the inner ring central pipe (3) pass through the upper layer of punched sheet (11) from bottom to top and are welded to the upper layer of punched sheet (11). ​ ​ ​ ​ ​ ​

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