Graphite sealing structure of calcining furnace

Abstract

The utility model relates to the technical field of calcining furnace sealing, in particular to a calcining furnace graphite sealing structure which comprises a first air cushion, a first groove is formed in one side face of the air cushion, a first connecting rod is fixedly connected to the inner wall of the groove, a first sliding ring is fixedly connected to the other end of the first connecting rod, and a supporting rod is slidably connected to the inner ring of the first sliding ring. Combustion heating is carried out in the furnace body, in the heating process, part of internal heat is transmitted to a heat conduction ring, due to the fact that the heat conduction ring is fixedly connected with a second air cushion, air in the second air cushion is heated to expand, the second air cushion expands in the expansion process, meanwhile, a first air cushion and the second air cushion are communicated through an air conveying pipe, and in the same way, the first air cushion is heated to expand; in the expansion process, the first connecting rod and the second connecting rod move oppositely, then the first sliding ring and the second sliding ring are driven to move, meanwhile, the first fixing ring and the second fixing ring are driven to move till the first fixing ring and the second fixing ring are clamped, and then the sealing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of calciner sealing, and particularly relates to a graphite sealing structure for a calciner. Background Art

[0002] A calciner is a thermal equipment that heat-treats carbonaceous raw materials (such as coke, anthracite, etc.) at high temperatures to improve the properties of the raw materials. It is used in ironmaking, recovering rare metals, catalyst production, environmental improvement, and equipment for producing special chemical products. After the raw materials are calcined, most of the moisture and volatile components are removed, the volume shrinks accordingly, and the density, strength, and conductivity increase correspondingly. The purpose of calcination is, first, to improve the properties of the raw materials, and second, to stabilize the volume of the raw materials so that the formed green products will not crack during the subsequent roasting process.

[0003] During the sealing process of the calciner, graphite is usually used for sealing. However, the sealing structure will deform when exposed to high temperatures and cannot achieve the sealing effect. The existing sealing structures are difficult to withstand high temperatures and thus cannot complete the sealing during the calcination process.

[0004] Therefore, an improvement is made, and a graphite sealing structure for a calciner is proposed. Summary of the Utility Model

[0005] The purpose of the utility model is to address the problem of sealing a calciner at high temperatures.

[0006] To achieve the above utility model purpose, the utility model provides a graphite sealing structure for a calciner to solve the above problems.

[0007] Specifically, the utility model is as follows:

[0008] It includes an air cushion one. A groove one is provided on one side of the air cushion one. A connecting rod one is fixedly connected to the inner wall of the groove. The other end of the connecting rod one is fixedly connected to a sliding ring one. A support rod is slidably connected to the inner ring of the sliding ring one. The other end of the support rod passes through and is connected to a fixing ring one and a fixing ring two. An air delivery pipe is communicated with the side of the air cushion one close to the fixing ring. The other end of the air delivery pipe passes through the support rod and is communicated with an air cushion two.

[0009] As a preferred technical solution of the utility model, a groove two is provided on the side of the air cushion two close to the fixing ring two. A connecting rod two is fixedly connected to the inner wall of the groove two. The other end of the connecting rod two is fixedly connected to a sliding ring two. A support rod is slidably connected to the inner ring of the sliding ring two.

[0010] As a preferred technical solution of the utility model, a housing is fixedly connected to the side of the air cushion one away from the groove, and a heat conduction ring is fixedly connected to the side of the air cushion two away from the groove two.

[0011] As a preferred technical solution of the present utility model, a furnace body is fixedly connected to the side of the heat-conducting ring away from the air cushion, and a base is fixedly connected to the lower surface of the furnace body.

[0012] As a preferred technical solution of the present utility model, the first fixing ring is engaged with the second fixing ring, and the first fixing ring and the second fixing ring are slidably connected to the outer surface of the support rod.

[0013] As a preferred technical solution of the present utility model, the first connecting rod and the second connecting rod are respectively arranged in a circular array on the inner walls of the first groove and the second groove, and the first sliding ring and the second sliding ring are respectively located on the opposite surfaces of the first fixing ring and the second fixing ring.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] When sealing the calcining furnace, combustion heating is carried out inside the furnace body. During the heating process, part of the internal heat is transferred to the heat-conducting ring. Since the heat-conducting ring is fixedly connected to the air cushion II, the air inside the air cushion II is heated and expands. During the expansion process, the air cushion II expands. At the same time, the air cushion I and the air cushion II are connected through an air pipe. Similarly, the air cushion I is heated and expands. During the expansion process, the first connecting rod and the second connecting rod move towards each other, thereby driving the first sliding ring and the second sliding ring to move, and at the same time driving the first fixing ring and the second fixing ring to move until the first fixing ring and the second fixing ring are engaged, thus achieving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 1 is an overall structural schematic diagram of a graphite sealing structure of a calcining furnace provided by the present utility model;

[0017] Figure 2 FIG. 2 is an overall schematic diagram of the sealing structure of a graphite sealing structure of a calcining furnace provided by the present utility model;

[0018] Figure 3 FIG. 3 is a schematic diagram of a sealing device of a graphite sealing structure of a calcining furnace provided by the present utility model;

[0019] Figure 4 FIG. 4 is an exploded view of a sealing device of a graphite sealing structure of a calcining furnace provided by the present utility model.

[0020] Labels in the figures:

[0021] 1. Air cushion I; 101. First groove; 102. First connecting rod; 103. First sliding ring; 104. Support rod; 105. First fixing ring; 106. Second fixing ring; 107. Air pipe; 108. Air cushion II;

[0022] 2. Second groove; 201. Second connecting rod; 202. Second sliding ring;

[0023] 3. Housing; 301. Heat-conducting ring; 302. Furnace body;

[0024] 4. Base. Detailed implementation manner

[0025] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0027] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0028] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] Please refer to Figure 1 - Figure 4 , a graphite sealing structure for a calcining furnace, including an air cushion 1, a groove 101 is provided on the side of the air cushion 1, a connecting rod 102 is fixedly connected to the inner wall of the groove, the other end of the connecting rod 102 is fixedly connected to a sliding ring 103, a support rod 104 is slidably connected to the inner ring of the sliding ring 103, the other end of the support rod 104 passes through and is connected to a fixing ring 105 and a fixing ring 106, an air delivery pipe 107 is communicated with the surface of the air cushion 1 close to the fixing ring 105, and the other end of the air delivery pipe 107 passes through the support rod 104 and is communicated with an air cushion 108.

[0030] When sealing the calciner, the inside of the furnace body 302 is heated by combustion. During the heating process, part of the internal heat is transferred to the heat-conducting ring 301. Since the heat-conducting ring 301 is fixedly connected to the air cushion II 108, the air inside the air cushion II 108 is heated and expands. During the expansion process, the air cushion II 108 expands. At the same time, the air cushion I 1 and the air cushion II 108 are connected through the air pipe 107. Similarly, the air cushion I 1 is heated and expands. During the expansion process, the connecting rod I 102 and the connecting rod II 201 move towards each other, thereby driving the sliding ring I 103 and the sliding ring II 202 to move, and at the same time driving the fixed ring I 105 and the fixed ring II 106 to move until the fixed ring I 105 and the fixed ring II 106 are engaged, thereby achieving the sealing effect. Both the fixed ring I 105 and the fixed ring II 106 are made of graphite. When being fixed, the fixed ring I 105 and the fixed ring II 106 have certain flexibility and compressibility. When used for sealing, under the action of pressure, the graphite material can deform and fill the sealing gap, thus achieving a good sealing effect. This self-sealing property enables the graphite seal to adapt to different working conditions and sealing requirements. In addition, the friction coefficient of graphite is very low, which enables it to reduce the frictional resistance with the sealing surface during the sealing process, reduce the wear of the sealing surface, and extend the service life of the seal.

[0031] A groove II 2 is arranged on the surface of the air cushion II 108 close to the fixed ring II 106. A connecting rod II 201 is fixedly connected to the inner wall of the groove II 2. The other end of the connecting rod II 201 is fixedly connected to a sliding ring II 202. A support rod 104 is slidably connected to the inner ring of the sliding ring II 202.

[0032] The groove II 2 arranged on the surface of the air cushion II 108 close to the fixed ring II 106 is used to support the connecting rod. The connecting rod II 201 fixedly connected to the inner wall of the groove II 2 is used to push the sliding ring II 202. The sliding ring II 202 fixedly connected to the other end of the connecting rod II 201 is used to control the sliding of the fixed ring II 106, so that the fixed ring II 106 and the fixed ring I 105 are engaged to achieve sealing. When sealing, the air cushion II 108 expands due to heat and drives the connecting rod II 201 and the sliding ring II 202 to move, thereby driving the fixed ring II 106 to slide on the outer surface of the support rod 104, realizing the engagement of the fixed ring II 106 and the fixed ring I 105.

[0033] A housing 3 is fixedly connected to the surface of the air cushion I 1 away from the groove I 101. A heat-conducting ring 301 is fixedly connected to the surface of the air cushion II 108 away from the groove II 2.

[0034] The outer shell 3 fixedly connected to the side of the air cushion 1 away from the groove 101 is used to protect and insulate the furnace body 302. The heat conduction ring 301 fixedly connected to the side of the air cushion 108 away from the groove 2 is used for heat conduction, and then heats the air inside the air cushion 108 and the air cushion 1, so that the air inside the air cushion 1 and the air cushion 108 expands due to heat, realizing the expansion of the air cushion 1 and the air cushion 108.

[0035] The heat conduction ring 301 is fixedly connected with the furnace body 302 on the side away from the air cushion 108, and the base 4 is fixedly connected to the lower surface of the furnace body 302.

[0036] The furnace body 302 fixedly connected to the side of the heat conduction ring 301 away from the air cushion 108 is used for calcination, and the base 4 fixedly connected to the lower surface of the furnace body 302 is used to support the furnace body 302.

[0037] The fixing ring 105 is engaged with the fixing ring 106, and the fixing ring 105 and the fixing ring 106 are slidably connected to the outer surface of the support rod 104.

[0038] The engagement of the fixing ring 105 and the fixing ring 106 can realize the engagement of the furnace body 302 and the outer shell 3, and thus realize sealing. The fixing ring 105 and the fixing ring 106 being slidably connected to the outer surface of the support rod 104 can realize the sealing of the outer shell 3 and the furnace body 302 through the sliding of the fixing ring 105 and the fixing ring 106. When the fixing ring 105 and the fixing ring 106 slide, the expansion of the air cushion 1 and the air cushion 108 drives the movement of the connecting rod 102 and the connecting rod 201, and then drives the sliding of the sliding ring 103 and the sliding ring 202. The sliding of the sliding ring 103 and the sliding ring 202 can drive the sliding of the fixing ring 105 and the fixing ring 106, realizing engagement and thus realizing sealing.

[0039] The connecting rod 102 and the connecting rod 201 are respectively arranged in a circular array on the inner walls of the groove 101 and the groove 2, and the sliding ring 103 and the sliding ring 202 are respectively located on the opposite sides of the fixing ring 105 and the fixing ring 106.

[0040] The connecting rod 102 and the connecting rod 201 are respectively arranged in a circular array on the inner walls of the groove 101 and the groove 2 so that the air cushion 1 and the air cushion 108 can uniformly push the connecting rod 102 and the connecting rod 201 to move during the inflation process, and then make the sliding ring 103 and the sliding ring 202 slide towards each other at a constant speed, and then realize the sliding of the fixing ring 105 and the fixing ring 106, thereby realizing the sealing of the device.

[0041] The usage process of a graphite sealing structure of a calcination furnace provided by the present utility model is as follows:

[0042] When sealing the calciner, the inside of the furnace body 302 is heated by combustion. During the heating process, part of the internal heat is transferred to the heat conduction ring 301. Since the heat conduction ring 301 is fixedly connected to the second air cushion 108, the air inside the second air cushion 108 is heated and expands. During the expansion process, the second air cushion 108 expands. At the same time, the first air cushion 1 and the second air cushion 108 are connected through the air pipe 107. Similarly, the first air cushion 1 is heated and expands. During the expansion process, the first connecting rod 102 and the second connecting rod 201 move towards each other, thereby driving the first sliding ring 103 and the second sliding ring 202 to move, and at the same time driving the first fixing ring 105 and the second fixing ring 106 to move until the first fixing ring 105 and the second fixing ring 106 are engaged, thereby achieving the sealing effect.

[0043] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] Obviously, the above-described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. The drawings show the preferred embodiments of the present utility model, but do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or equivalently replace some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present utility model in other related technical fields is equally within the scope of the patent protection of the present utility model.

Claims

1. A graphite sealing structure for a calcining furnace, characterized in that, It includes an air cushion 1, a groove 101 is provided on the side of the air cushion 1, a connecting rod 102 is fixedly connected to the inner wall of the groove, the other end of the connecting rod 102 is fixedly connected to a sliding ring 103, a support rod 104 is slidably connected to the inner ring of the sliding ring 103, the other end of the support rod 104 is connected through a fixing ring 105 and a fixing ring 106, an air delivery pipe 107 is communicated with the surface of the air cushion 1 near the fixing ring 105, and the other end of the air delivery pipe 107 penetrates through the support rod 104 and is communicated with an air cushion 108.

2. The graphite sealing structure of a calciner according to claim 1, characterized in that, A groove 2 is provided on the surface of the air cushion 108 near the fixing ring 106, a connecting rod 201 is fixedly connected to the inner wall of the groove 2, the other end of the connecting rod 201 is fixedly connected to a sliding ring 202, and the support rod 104 is slidably connected to the inner ring of the sliding ring 202.

3. The graphite sealing structure of a calciner according to claim 2, characterized in that, A housing 3 is fixedly connected to the surface of the air cushion 1 away from the groove 101, and a heat conduction ring 301 is fixedly connected to the surface of the air cushion 108 away from the groove 2.

4. A graphite sealing structure for a calcining furnace according to claim 3, characterized in that, A furnace body 302 is fixedly connected to the surface of the heat conduction ring 301 away from the air cushion 108, and a base 4 is fixedly connected to the lower surface of the furnace body 302.

5. The graphite sealing structure of a calciner according to claim 1, wherein The fixing ring 105 is engaged with the fixing ring 106, and the fixing ring 105 and the fixing ring 106 are slidably connected to the outer surface of the support rod 104.

6. The graphite sealing structure of a calciner according to claim 2, characterized in that, The connecting rod 102 and the connecting rod 201 are respectively arranged in a circular array on the inner walls of the groove 101 and the groove 2, and the sliding ring 103 and the sliding ring 202 are respectively located on the opposite surfaces of the fixing ring 105 and the fixing ring 106.

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