Sealing structure and burning torch

Abstract

The utility model provides a sealing structure and an ignition gun, the sealing structure is suitable for sealing a rod body arranged on a mounting seat in a penetrating manner, and the sealing structure comprises a first sealing element arranged on the mounting seat and sleeved on the rod body, and a second sealing element arranged on the mounting seat and sleeved on the rod body; the rod body is sleeved with the second sealing piece, the rod body is sleeved with the elastic piece, the first sealing piece is provided with a first extrusion end face, the second sealing piece is provided with a second extrusion end face, and the elastic piece is arranged between the first extrusion end face and the second extrusion end face in the axial direction of the rod body. The first extrusion end face and the second extrusion end face are used for jointly extruding the elastic piece, so that the elastic piece elastically deforms in the radial direction of the rod body, and the elastic piece extrudes the rod body. The ignition gun barrel solves the problem that an ignition gun barrel in the prior art is prone to abrasion.

Description

Technical Field

[0001] The utility model relates to the technical field of coal chemical hot inert gas preparation, in particular to a sealing structure and an ignition gun. Background Art

[0002] The hot inert gas used to dry pulverized coal in the dry pulverized coal gasification process of coal chemical industry is generated by a hot blast furnace. The ignition gun rod of the hot blast furnace is inserted into the square flange. Since there is a gap fit between the ignition gun rod and the square flange, and both the ignition gun rod and the square flange are made of metal, the vibration of the ignition gun rod during the operation of the hot blast furnace will cause the ignition gun rod to hit the square flange, resulting in wear of the ignition gun rod, which can easily lead to leakage of fuel gas in the ignition gun rod, and thus cause fire accidents. Utility Model Content

[0003] The main purpose of the utility model is to provide a sealing structure and an ignition gun to solve the problem that the ignition gun rod in the prior art is easy to wear.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a sealing structure is provided, which is suitable for sealing a rod body passed through a mounting seat, and the sealing structure includes: a first sealing member, which is arranged on the mounting seat, and the first sealing member is sleeved on the rod body; a second sealing member and an elastic member, the second sealing member is sleeved on the rod body, and the elastic member is sleeved on the rod body, the first sealing member has a first extrusion end face, and the second sealing member has a second extrusion end face. Along the axial direction of the rod body, the elastic member is arranged between the first extrusion end face and the second extrusion end face, so that the first extrusion end face and the second extrusion end face are used to jointly extrude the elastic member, so that the elastic member undergoes elastic deformation along the radial direction of the rod body, so that the elastic member extrude the rod body.

[0005] Furthermore, the first seal includes a first end face and a second end face arranged opposite to each other along the axial direction of the rod body, the second end face is connected to the mounting seat, and at least a portion of the first end face is used to form a first extrusion end face; the second seal includes a first annular portion and a second annular portion connected to each other, the second annular portion is arranged close to the first seal relative to the first annular portion, and a circular groove is opened in the second annular portion, the circular groove is used to accommodate the elastic member, and the circular groove has a first inner groove wall extending along the radial direction of the rod body, and the first inner groove wall is used to form the second extrusion end face.

[0006] Furthermore, a limiting groove is provided on the first end face, which is recessed along the radial direction of the rod body toward a direction away from the second sealing member. The limiting groove includes a first limiting groove wall and a second limiting groove wall connected to each other. The first limiting groove wall extends along the radial direction of the rod body, and the second limiting groove wall extends along the axial direction of the rod body. The second limiting groove wall is connected to the first extrusion end face, and the first limiting groove wall abuts against the second annular portion.

[0007] Furthermore, the circular groove also has a second inner groove wall extending along the axial direction of the rod body, the second inner groove wall abuts against the elastic member, and the second inner groove wall abuts against the second limiting groove wall.

[0008] Furthermore, the diameter of the first annular portion is smaller than the diameter of the second annular portion, and the second annular portion includes a first axial end face and a second axial end face that are relatively arranged along the axial direction of the rod body, the first axial end face abuts against the first limiting groove wall, and the second axial end face is connected to the circumferential outer wall of the first annular portion; wherein the central axes of the first annular portion, the second annular portion, the rod body and the elastic member are arranged to coincide with each other.

[0009] Furthermore, the sealing structure also includes a third sealing member, which is sleeved on the first sealing member. The third sealing member includes a protrusion extending in the radial direction of the rod body, and the protrusion is mounted on the second axial end face of the second annular portion to limit the second sealing member.

[0010] Furthermore, the third sealing member includes a first connecting portion and a second connecting portion connected to each other, the two sides of the second connecting portion are respectively connected to the protrusion and the first connecting portion, the second connecting portion and the first connecting portion both extend along the axial direction of the rod body, the cross-sectional area of ​​the first connecting portion along the radial direction of the rod body is greater than the cross-sectional area of ​​the second connecting portion along the radial direction of the rod body, and the first connecting portion and the first sealing member are connected.

[0011] Furthermore, the circumferential inner wall of the first connecting portion and the circumferential outer wall of the first sealing member are threadedly connected; the first sealing member and the rod body are clearance fit, and the second sealing member and the rod body are clearance fit.

[0012] Furthermore, the elastic member is an O-ring.

[0013] According to another aspect of the present invention, an ignition gun is provided, comprising a mounting base, a rod body and the above-mentioned sealing structure.

[0014] By applying the technical solution of the present invention, the sealing structure includes a first sealing member, a second sealing member and an elastic member. The elastic member is jointly extruded by the first extrusion end face and the second extrusion end face, so that the elastic member undergoes elastic deformation along the radial direction of the rod body, so that the elastic member squeezes the rod body to prevent the rod body from moving toward the direction close to the mounting seat, thereby ensuring the installation gap between the rod body and the mounting seat, avoiding shaking of the rod body and wear of the mounting seat, and further avoiding leakage of fuel gas in the rod body, thereby solving the problem of easy wear of the ignition gun rod in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 A structural schematic diagram of an embodiment of an ignition gun according to the present utility model is shown.

[0017] The above drawings include the following reference numerals:

[0018] 1. Mounting seat; 2. Rod body; 10. First sealing member; 20. Second sealing member; 30. Elastic member; 11. First extrusion end face; 21. Second extrusion end face; 13. Second end face; 22. First annular portion; 23. Second annular portion; 24. Circular groove; 241. First inner groove wall; 122. First limiting groove wall; 123. Second limiting groove wall; 242. Second inner groove wall; 244. Second axial end face; 31. Protrusion; 32. First connecting portion; 33. Second connecting portion. DETAILED DESCRIPTION

[0019] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0020] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0021] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0022] Please refer to Figure 1 The utility model provides a sealing structure suitable for sealing a rod body 2 passed through a mounting seat 1. The sealing structure includes: a first sealing member 10, which is arranged on the mounting seat 1 and is sleeved on the rod body 2; a second sealing member 20 and an elastic member 30, the second sealing member 20 is sleeved on the rod body 2, and the elastic member 30 is sleeved on the rod body 2. The first sealing member 10 has a first extrusion end face 11, and the second sealing member 20 has a second extrusion end face 21. Along the axial direction of the rod body 2, the elastic member 30 is arranged between the first extrusion end face 11 and the second extrusion end face 21, so that the first extrusion end face 11 and the second extrusion end face 21 are used to jointly extrude the elastic member 30, so that the elastic member 30 undergoes elastic deformation along the radial direction of the rod body 2, so that the elastic member 30 squeezes the rod body 2.

[0023] The sealing structure of the present invention includes a first sealing member 10, a second sealing member 20 and an elastic member 30. The elastic member 30 is extruded by the first extrusion end face 11 and the second extrusion end face 21, so that the elastic member 30 is elastically deformed in the radial direction of the rod body 2, so that the elastic member 30 squeezes the rod body 2 to prevent the rod body 2 from moving toward the mounting seat 1, thereby ensuring the installation gap between the rod body 2 and the mounting seat 1, avoiding the shaking of the rod body 2 and the wear of the mounting seat 1, and further avoiding the leakage of fuel gas in the rod body 2, thereby solving the problem of easy wear of the ignition gun rod in the prior art.

[0024] Specifically, the rod body 2 is the rod of the ignition gun, and the mounting seat 1 is a square flange; there is a through hole on the mounting seat 1, and the rod body 2 is penetrated in the through hole. The elastic member 30 squeezes the rod body 2 to avoid reducing the installation gap between the circumferential outer wall of the rod body 2 and the hole wall of the through hole, that is, to avoid collision between the rod body 2 and the through hole.

[0025] In this embodiment, the first seal 10 includes a first end face and a second end face 13 arranged opposite to each other along the axial direction of the rod body 2, the second end face 13 is connected to the mounting seat 1, and at least a portion of the first end face is used to form the first extrusion end face 11; the second seal 20 includes a first annular portion 22 and a second annular portion 23 connected to each other, the second annular portion 23 is arranged close to the first seal 10 relative to the first annular portion 22, and a circular groove 24 is opened in the second annular portion 23, the circular groove 24 is used to accommodate the elastic member 30, and the circular groove 24 has a first inner groove wall 241 extending along the radial direction of the rod body 2, and the first inner groove wall 241 is used to form the second extrusion end face 21.

[0026] Specifically, the elastic member 30 is installed in the circular groove 24 to ensure that the first inner groove wall 241 of the circular groove 24 and the first end surface of the first sealing member 10 jointly squeeze the elastic member 30 to ensure that the elastic member 30 can smoothly undergo elastic deformation along the radial direction of the rod body 2.

[0027] In this embodiment, a limiting groove is provided on the first end face, and the limiting groove is recessed along the radial direction of the rod body 2 toward a direction away from the second sealing member 20. The limiting groove includes a first limiting groove wall 122 and a second limiting groove wall 123 connected to each other. The first limiting groove wall 122 extends along the radial direction of the rod body 2, and the second limiting groove wall 123 extends along the axial direction of the rod body 2. The second limiting groove wall 123 is connected to the first extrusion end face 11, and the first limiting groove wall 122 abuts against the second annular portion 23.

[0028] Specifically, the first limiting groove wall 122 and the second annular portion 23 are abutted to limit and support the second annular portion 23 in the axial direction of the rod body 2, and the length of the second limiting groove wall 123 is controlled to ensure the position of the first inner groove wall 241 of the circular groove 24, thereby ensuring that the first inner groove wall 241 of the circular groove 24 and the first end face of the first seal 10 can jointly extrude the elastic member 30, avoiding the distance between the first extrusion end face 11 and the second extrusion end face 21 being too large, resulting in the elastic member 30 being unable to fully undergo elastic deformation.

[0029] In this embodiment, the circular groove 24 further has a second inner groove wall 242 extending along the axial direction of the rod body 2 . The second inner groove wall 242 abuts against the elastic member 30 and the second inner groove wall 242 abuts against the second limiting groove wall 123 .

[0030] Specifically, by abutting the second inner groove wall 242 against the second limiting groove wall 123, the elastic member 30 can squeeze the second limiting groove wall 123 along the radial direction of the rod body 2, so that the second sealing member 20 tends to move away from the rod body 2, avoiding shaking of the rod body 2 and wear between the second sealing member 20.

[0031] In this embodiment, the diameter of the first annular portion 22 is smaller than the diameter of the second annular portion 23. The second annular portion 23 includes a first axial end face and a second axial end face 244 that are relatively arranged along the axial direction of the rod body 2. The first axial end face abuts the first limiting groove wall 122, and the second axial end face 244 is connected to the circumferential outer wall of the first annular portion 22; wherein the central axes of the first annular portion 22, the second annular portion 23, the rod body 2 and the elastic member 30 are arranged to coincide with each other.

[0032] Specifically, the first axial end face abuts against the first limiting groove wall 122 , so that the first limiting groove wall 122 abuts against the second annular portion 23 , thereby ensuring that the first seal 10 can limit and support the second annular portion 23 in the axial direction of the rod body 2 .

[0033] In this embodiment, the sealing structure also includes a third sealing member, which is sleeved on the first sealing member 10. The third sealing member includes a protrusion 31 extending in the radial direction of the rod body 2. The protrusion 31 is mounted on the second axial end face 244 of the second annular portion 23 to limit the second sealing member 20.

[0034] Specifically, the raised portion 31 is mounted on the second axial end face 244 of the second annular portion 23, so that the second axial end face 244 can limit the second seal 20 in the axial direction of the rod body 2, preventing the second seal 20 from moving along the axial direction of the rod body 2 in the direction away from the first seal 10, so as to ensure the position of the first inner groove wall 241 of the circular groove 24, and further ensure that the first inner groove wall 241 of the circular groove 24 and the first end face of the first seal 10 can jointly squeeze the elastic member 30.

[0035] In this embodiment, the third sealing member includes a first connecting portion 32 and a second connecting portion 33 connected to each other, the two sides of the second connecting portion 33 are respectively connected to the protrusion 31 and the first connecting portion 32, the second connecting portion 33 and the first connecting portion 32 both extend along the axial direction of the rod body 2, the cross-sectional area of ​​the first connecting portion 32 along the radial direction of the rod body 2 is greater than the cross-sectional area of ​​the second connecting portion 33 along the radial direction of the rod body 2, and the first connecting portion 32 is connected to the first sealing member 10.

[0036] Specifically, the second connecting portion 33 is used to connect the protrusion 31 and the first connecting portion 32, so that the protrusion 31 and the first seal 10 are connected to limit the third seal in the axial direction of the rod body 2, thereby ensuring that the protrusion 31 can be fully placed on the second axial end face 244 of the second annular portion 23, further ensuring the reliability of the third seal for the second seal 20.

[0037] In this embodiment, the circumferential inner wall of the first connecting portion 32 and the circumferential outer wall of the first sealing member 10 are threadedly connected; the first sealing member 10 and the rod body 2 are clearance fit, and the second sealing member 20 and the rod body 2 are clearance fit.

[0038] Specifically, the connection reliability of the first seal 10 and the third seal is ensured by threading the circumferential inner wall of the first connecting portion 32 and the circumferential outer wall of the first seal 10; by setting the first seal 10 and the rod body 2 as a clearance fit, and the second seal 20 and the rod body 2 as a clearance fit, wear between the first seal 10 or the second seal 20 and the rod body 2 is avoided.

[0039] In this embodiment, the elastic member 30 is an O-ring, which further ensures that the elastic member 30 can fully deform elastically, thereby ensuring that the elastic member 30 can fully squeeze the rod 2 to prevent the rod 2 from moving toward the mounting seat 1.

[0040] Specifically, the O-ring is selected to be φ19 mm×2.65 mm. After being installed, the O-ring is tightly matched with the rod body 2 and the circular groove 24 without any gap.

[0041] The utility model also provides an ignition gun, comprising a mounting base 1, a rod body 2 and the above-mentioned sealing structure.

[0042] In specific implementation, the outer diameter of the rod body 2 is 19.5 mm, the first seal 10 and the mounting seat 1 are welded, and both the first seal 10 and the second seal 20 are provided with a through hole for the rod body 2 to pass through, and the inner diameter of the through hole is 19.7 mm.

[0043] Specifically, the first sealing member 10 , the second sealing member 20 and the third sealing member are all made of metal.

[0044] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0045] The sealing structure of the utility model not only has a good sealing effect, but is also easy to disassemble and can be replaced in time after the ignition gun is stopped according to the aging degree of the O-ring.

[0046] The sealing structure of the present invention includes a first sealing member 10, a second sealing member 20 and an elastic member 30. The elastic member 30 is extruded by the first extrusion end face 11 and the second extrusion end face 21, so that the elastic member 30 is elastically deformed in the radial direction of the rod body 2, so that the elastic member 30 squeezes the rod body 2 to prevent the rod body 2 from moving toward the mounting seat 1, thereby ensuring the installation gap between the rod body 2 and the mounting seat 1, avoiding the shaking of the rod body 2 and the wear of the mounting seat 1, and further avoiding the leakage of fuel gas in the rod body 2, thereby solving the problem of easy wear of the ignition gun rod in the prior art.

[0047] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0048] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A sealing structure suitable for sealing a rod (2) passing through a mounting seat (1), characterized in that: The sealing structure comprises: A first sealing member (10) is provided on the mounting seat (1), and the first sealing member (10) is sleeved on the rod body (2); A second sealing member (20) and an elastic member (30), wherein the second sealing member (20) is sleeved on the rod body (2), and the elastic member (30) is sleeved on the rod body (2), the first sealing member (10) has a first extrusion end face (11), and the second sealing member (20) has a second extrusion end face (21), and along the axial direction of the rod body (2), the elastic member (30) is arranged between the first extrusion end face (11) and the second extrusion end face (21), so that the first extrusion end face (11) and the second extrusion end face (21) are used to jointly extrude the elastic member (30), so that the elastic member (30) undergoes elastic deformation along the radial direction of the rod body (2), so that the elastic member (30) extrude the rod body (2).

2. The sealing structure according to claim 1, wherein: The first sealing member (10) comprises a first end face and a second end face (13) arranged opposite to each other in the axial direction of the rod body (2), the second end face (13) being connected to the mounting seat (1), and at least a portion of the first end face being used to form the first extruded end face (11); the second sealing member (20) comprises a first annular portion (22) and a second annular portion (23) being connected to each other, the second annular portion (23) being arranged close to the first sealing member (10) relative to the first annular portion (22), a circular groove (24) being provided in the second annular portion (23), the circular groove (24) being used to accommodate the elastic member (30), the circular groove (24) having a first inner groove wall (241) extending in the radial direction of the rod body (2), the first inner groove wall (241) being used to form the second extruded end face (21).

3. The sealing structure according to claim 2, characterized in that: A limiting groove is provided on the first end face, the limiting groove being recessed in a radial direction of the rod body (2) in a direction away from the second sealing member (20), the limiting groove comprising a first limiting groove wall (122) and a second limiting groove wall (123) connected to each other, the first limiting groove wall (122) extending in a radial direction of the rod body (2), the second limiting groove wall (123) extending in an axial direction of the rod body (2), the second limiting groove wall (123) being connected to the first extrusion end face (11), and the first limiting groove wall (122) abutting against the second annular portion (23).

4. The sealing structure according to claim 3, characterized in that: The circular groove (24) further comprises a second inner groove wall (242) extending along the axial direction of the rod body (2); the second inner groove wall (242) abuts against the elastic member (30); and the second inner groove wall (242) abuts against the second limiting groove wall (123).

5. The sealing structure according to claim 3, characterized in that: The diameter of the first annular portion (22) is smaller than the diameter of the second annular portion (23); the second annular portion (23) includes a first axial end face and a second axial end face (244) arranged opposite to each other along the axial direction of the rod body (2); the first axial end face abuts against the first limiting groove wall (122); the second axial end face (244) is connected to the circumferential outer wall of the first annular portion (22); wherein the central axes of the first annular portion (22), the second annular portion (23), the rod body (2) and the elastic member (30) are arranged to coincide with each other.

6. The sealing structure according to claim 3, characterized in that: The sealing structure further comprises a third sealing member, which is sleeved on the first sealing member (10). The third sealing member comprises a protrusion (31) extending in the radial direction of the rod body (2). The protrusion (31) is mounted on the second axial end surface (244) of the second annular portion (23) to limit the second sealing member (20).

7. The sealing structure according to claim 6, characterized in that: The third sealing member comprises a first connecting portion (32) and a second connecting portion (33) connected to each other, the two sides of the second connecting portion (33) being connected to the protruding portion (31) and the first connecting portion (32) respectively, the second connecting portion (33) and the first connecting portion (32) both extending along the axial direction of the rod body (2), the cross-sectional area of ​​the first connecting portion (32) along the radial direction of the rod body (2) being larger than the cross-sectional area of ​​the second connecting portion (33) along the radial direction of the rod body (2), and the first connecting portion (32) being connected to the first sealing member (10).

8. The sealing structure according to claim 7, characterized in that: The circumferential inner wall of the first connecting portion (32) and the circumferential outer wall of the first sealing member (10) are threadedly connected; the first sealing member (10) and the rod body (2) are clearance-fitted, and the second sealing member (20) and the rod body (2) are clearance-fitted.

9. The sealing structure according to claim 1, wherein: The elastic member (30) is an O-ring.

10. An ignition gun, characterized in that: It comprises a mounting seat (1), a rod body (2) and the sealing structure according to any one of claims 1 to 9.

Images