Carbonization furnace and dynamic sealing device and sealing system thereof

Abstract

The utility model relates to a carbonization furnace and a dynamic sealing device and a sealing system thereof, a rotary cylinder is provided with a rotary cylinder end, an inlet cylinder and an outlet cylinder are provided with fixed cylinder ends, the rotary cylinder end extends into the fixed cylinder ends, the rotary cylinder end, the fixed cylinder ends and an annular step enclose an annular groove, the dynamic sealing device is arranged in the annular groove, and the dynamic sealing device is arranged in the annular groove. The dynamic sealing device comprises a first ceramic sealing ring, a special metal sealing ring and an elastic pressing mechanism, the first ceramic sealing ring and the special metal sealing ring are sleeved inside and outside, and the elastic pressing mechanism applies elastic reset force to the special metal sealing ring. The dynamic sealing device can better resist thermal stress, and the risk of sealing failure is reduced. The dynamic sealing device effectively reduces the heat loss and the leakage of the atmosphere in the furnace through self-adaptive adjustment, and improves the heat efficiency and the working stability of the carbonization furnace. In addition, due to the dynamic sealing device, the carbonization furnace has longer service life and lower maintenance cost, and remarkable economic benefits are brought to enterprises.

Description

Technical Field

[0001] The utility model relates to the technical field of carbonization furnaces, in particular to a carbonization furnace, a dynamic sealing device and a sealing system thereof. Background Art

[0002] With the continuous development of industrial technology, carbonization furnace, as an important thermal equipment, has been widely used in many fields such as chemical industry, metallurgy, building materials, etc. This equipment converts raw materials into carbon materials with specific properties through high-temperature treatment, thus meeting the needs of various industrial production. However, the sealing performance of traditional carbonization furnaces is often poor under high-temperature working environment, which not only affects the operating efficiency of the equipment, but also may cause safety hazards.

[0003] As an important equipment in industrial production, the sealing performance of the carbonization furnace plays a vital role in the stable operation of the equipment and the quality of the product. However, the traditional carbonization furnace usually adopts a static sealing structure, that is, during the operation of the equipment, the seal and the sealing surface remain relatively static. Under high temperature conditions, this sealing method is prone to increase the gap between the seal and the sealing surface due to factors such as thermal expansion and material creep, thereby causing the sealing performance to decrease. In addition, during the operation of the carbonization furnace, the temperature and pressure in the furnace are constantly changing, which will also affect the sealing performance. Therefore, the high-temperature sealing performance of the traditional carbonization furnace is poor and it is difficult to meet the needs of modern industrial production. Utility Model Content

[0004] To this end, the utility model provides a carbonization furnace, a dynamic sealing device and a sealing system thereof which can solve the problem that the high-temperature sealing performance of a traditional carbonization furnace is poor.

[0005] In order to solve the above technical problems, the utility model provides a dynamic sealing device of a carbonization furnace, which is used for sealing a rotating cylinder and an inlet cylinder of a carbonization furnace or for sealing a rotating cylinder and an outlet cylinder of a carbonization furnace, wherein the rotating cylinder has a rotating cylinder end, and the inlet cylinder and the outlet cylinder have a fixed cylinder end, and the fixed cylinder end is provided with an annular step, and the rotating cylinder end extends into the fixed cylinder end, and the outer wall of the rotating cylinder end, the inner wall of the fixed cylinder end and the annular step enclose an annular groove, and the dynamic sealing device is arranged in the annular groove, and the dynamic sealing device includes a first ceramic sealing ring, a special metal sealing ring and an elastic clamping mechanism, the first ceramic sealing ring contacts the outer wall of the rotating cylinder end, and the special metal sealing ring contacts the inner wall of the fixed cylinder end, and the elastic clamping mechanism applies an elastic reset force toward the annular step to the special metal sealing ring.

[0006] Furthermore, the elastic clamping mechanism includes a fixed seat, a clamping seat, a connecting plate, a pull rod and a spring. The fixed seat is relatively fixed to the end of the fixed cylinder, the clamping seat is pressed on the special metal sealing ring, the connecting plate is relatively fixed to the clamping seat, the pull rod is movably connected to the fixed seat along the axial direction of the special metal sealing ring, one end of the pull rod is relatively fixed to the connecting plate, and the spring is sleeved on the pull rod and applies an elastic reset force to the pull rod.

[0007] Furthermore, the spring is a compression spring or a tension spring.

[0008] Furthermore, the elastic pressing mechanism also includes a roller, which is mounted on the pressing seat and contacts the special metal sealing ring.

[0009] Furthermore, the elastic pressing mechanism includes a plurality of pressing seats, and the plurality of pressing seats of the same elastic pressing mechanism are connected to the same connecting plate.

[0010] Furthermore, the dynamic sealing device includes a plurality of the elastic pressing mechanisms, and the plurality of the elastic pressing mechanisms press the special metal sealing ring at a plurality of different positions along the annular direction.

[0011] The utility model also provides a sealing system for a carbonization furnace, comprising the dynamic sealing device and the static sealing device, wherein the static sealing device is arranged in the annular groove, and the static sealing device is arranged between the dynamic sealing device and the annular step.

[0012] Furthermore, the static sealing device includes a graphite sealing ring and / or a second ceramic sealing ring.

[0013] The utility model also provides a carbonization furnace, comprising:

[0014] Fixed cylinder;

[0015] A rotating cylinder is disposed inside the fixed cylinder and the two can rotate relative to each other, and two ends of the rotating cylinder extend out of two ends of the fixed cylinder respectively;

[0016] A material pushing device, arranged inside the rotating cylinder, for pushing the material at one end of the rotating cylinder to the other end of the rotating cylinder;

[0017] An inlet cylinder is provided at one end of the rotating cylinder and the two are interconnected and relatively rotatable, and the fixed cylinder end of the inlet cylinder and a rotating cylinder end of the rotating cylinder are sealed by the dynamic sealing device or the sealing system;

[0018] The outlet cylinder is arranged at the other end of the rotating cylinder and the two are interconnected and can rotate relatively. The fixed cylinder end of the outlet cylinder and the other rotating cylinder end of the rotating cylinder are sealed by the dynamic sealing device or the sealing system.

[0019] Furthermore, the pushing device is a pushing screw.

[0020] The above technical solution of the utility model has the following advantages over the prior art: the carbonization furnace, its dynamic sealing device and its sealing system described in the utility model, on the one hand, the dynamic sealing device can better resist thermal stress and reduce the risk of sealing failure. On the other hand, the dynamic sealing device effectively reduces heat loss and leakage of the atmosphere in the furnace through adaptive adjustment, thereby improving the thermal efficiency and working stability of the carbonization furnace. In addition, the dynamic sealing device enables the carbonization furnace to have a longer service life and lower maintenance costs, bringing significant economic benefits to the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0022] Figure 1 It is a structural schematic diagram of the carbonization furnace in the utility model;

[0023] Figure 2 It is a structural schematic diagram of the sealing system of the carbonization furnace in the utility model.

[0024] Explanation of the reference numerals in the drawings in the specification: 1. Fixed cylinder; 2. Rotating cylinder; 21. Rotating cylinder end; 3. Pushing device; 4. Inlet cylinder; 5. Outlet cylinder; 61. Fixed cylinder end; 7. Dynamic sealing device; 71. First ceramic sealing ring; 72. Special metal sealing ring; 73. Fixed seat; 74. Pressing seat; 75. Connecting plate; 76. Pull rod; 77. Spring; 78. Roller; 8. Static sealing device. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0026] See also Figure 1 and Figure 2 As shown, an embodiment of the carbonization furnace provided by the utility model.

[0027] The above-mentioned carbonization furnace comprises:

[0028] Fixed cylinder 1;

[0029] The rotating cylinder 2 is arranged inside the fixed cylinder 1 and the two can rotate relative to each other, and the two ends of the rotating cylinder 2 extend out of the two ends of the fixed cylinder 1 respectively;

[0030] A material pushing device 3 is provided inside the rotating cylinder 2 and is used to push the material at one end of the rotating cylinder 2 to the other end of the rotating cylinder 2;

[0031] The inlet cylinder 4 is arranged at one end of the rotating cylinder 2 and the two are connected to each other and can rotate relatively. The inlet cylinder 4 and the rotating cylinder 2 are sealed by a sealing system;

[0032] The outlet cylinder 5 is arranged at the other end of the rotating cylinder 2 and the two are connected to each other and can rotate relatively. The outlet cylinder 5 and the rotating cylinder 2 are sealed by a sealing system;

[0033] The rotating cylinder 2 has a rotating cylinder end 21, and the inlet cylinder 4 and the outlet cylinder 5 have a fixed cylinder end 61. The fixed cylinder end 61 is provided with an annular step. The rotating cylinder end 21 extends into the fixed cylinder end 61. The outer wall of the rotating cylinder end 21, the inner wall of the fixed cylinder end 61 and the annular step enclose an annular groove.

[0034] The above-mentioned sealing system includes a dynamic sealing device 7, which is arranged in the above-mentioned annular groove. The above-mentioned dynamic sealing device 7 includes a first ceramic sealing ring 71, a special metal sealing ring 72 and an elastic clamping mechanism. The above-mentioned first ceramic sealing ring 71 contacts the outer wall of the above-mentioned rotating cylinder end 21, and the above-mentioned special metal sealing ring 72 contacts the inner wall of the above-mentioned fixed cylinder end 61. The above-mentioned elastic clamping mechanism applies an elastic reset force to the above-mentioned special metal sealing ring 72 toward the above-mentioned annular step.

[0035] The material and the inert gas enter the rotary cylinder 2 through different inlets of the above-mentioned inlet cylinder 4. Nitrogen is introduced during the feeding process to ensure that the oxygen level during the carbonization process remains stable. While the rotary cylinder 2 rotates, the pushing device 3 pushes the material forward to carbonize the material. Finally, the carbonized material and the gas generated during the carbonization process are discharged from different outlets of the outlet cylinder 5. Since the inlet cylinder 4 and the rotary cylinder 2 need to rotate relative to each other without air leakage, and the outlet cylinder 5 and the rotary cylinder 2 need to rotate relative to each other without air leakage, it is necessary to seal the inlet cylinder 4 and the rotary cylinder 2, and to seal the outlet cylinder 5 and the rotary cylinder 2.

[0036] The above-mentioned dynamic sealing device 7 adopts a double-layer filler structure, the inner filler is the first ceramic sealing ring 71, which is mainly subjected to high temperature and corrosion, and the outer filler is the special metal sealing ring 72, which plays an auxiliary sealing and protective role. At the same time, by virtue of the deformation of the metal during the heating process and the property of thermal expansion and contraction, the gap and pressure of the dynamic sealing device 7 are adjusted through the elastic clamping mechanism, and the axial, radial and angular displacement of the equipment are solved at the same time; the first ceramic sealing ring 71 and the special metal sealing ring 72 can maintain stable performance in a high temperature environment, effectively resist high-temperature oxidation and corrosion inside the carbonization furnace, and ensure the long-term stable operation of the sealing system.

[0037] On the one hand, the dynamic sealing device 7 can better resist thermal stress and reduce the risk of sealing failure. On the other hand, the dynamic sealing device 7 effectively reduces heat loss and leakage of the atmosphere in the furnace through adaptive adjustment, thereby improving the thermal efficiency and working stability of the carbonization furnace. In addition, the dynamic sealing device 7 makes the carbonization furnace have a longer service life and lower maintenance costs, bringing significant economic benefits to the enterprise.

[0038] In the preferred implementation mode of the present embodiment, the elastic clamping mechanism includes a fixed seat 73, a clamping seat 74, a connecting plate 75, a pull rod 76 and a spring 77. The fixed seat 73 is relatively fixed to the fixed cylinder end 61, the clamping seat 74 is pressed on the special metal sealing ring 72, the connecting plate 75 is relatively fixed to the clamping seat 74, the pull rod 76 is movably connected to the fixed seat 73 along the axial direction of the special metal sealing ring 72, one end of the pull rod 76 is relatively fixed to the connecting plate 75, and the spring 77 is sleeved on the pull rod 76 and applies an elastic reset force to the pull rod 76.

[0039] Since the special metal sealing ring 72 is always subjected to the elastic force of the elastic pressing mechanism, if a tiny gap is formed on the side of the special metal sealing ring facing the annular step, the special metal sealing ring will move slightly to make the tiny gap disappear.

[0040] In the preferred implementation of this embodiment, the spring 77 is a compression spring or a tension spring.

[0041] Extension springs (also called tension springs, or extension springs for short) are helical springs that bear axial tension. Extension springs are generally made of circular cross-section materials. When not bearing load, the coils of the extension spring are generally tight and have no gaps. Compression springs (compression springs) are helical springs that bear axial pressure. The cross-section of the material used is mostly circular, and there are also rectangular and multi-strand steel windings. The springs are generally of equal pitch. The shapes of compression springs include: cylindrical, conical, convex and concave, and a small amount of non-circular. There is a certain gap between the coils of the compression spring, and the spring contracts when subjected to external loads.

[0042] In a preferred implementation manner of the present embodiment, the elastic pressing mechanism further comprises a roller 78 , which is mounted on the pressing seat 74 , and the roller 78 is in contact with the special metal sealing ring 72 .

[0043] When the special metal sealing ring 72 needs to rotate, the elastic pressing mechanism and the special metal sealing ring 72 can roll relative to each other.

[0044] In a preferred implementation manner of the present embodiment, the elastic pressing mechanism comprises a plurality of the pressing seats 74 , and the plurality of pressing seats 74 of the same elastic pressing mechanism are connected to the same connecting plate 75 .

[0045] Each elastic pressing mechanism includes a plurality of pressing seats 74 , so the contact area between each elastic pressing mechanism and the special metal sealing ring 72 is larger, ensuring that the elastic pressing mechanism can reliably press the special metal sealing ring 72 .

[0046] In a preferred implementation manner of the present embodiment, the above-mentioned dynamic sealing device includes a plurality of the above-mentioned elastic clamping mechanisms, and the plurality of the above-mentioned elastic clamping mechanisms clamp the above-mentioned special metal sealing ring 72 at a plurality of different positions along the circumferential direction.

[0047] A plurality of elastic pressing mechanisms are evenly arranged around the central axis of the special metal sealing ring 72. By arranging a plurality of elastic pressing mechanisms, it is ensured that the elastic pressing mechanisms can reliably press the special metal sealing ring 72.

[0048] In a preferred implementation manner of this embodiment, the sealing system further comprises a static sealing device 8, wherein the static sealing device 8 is disposed in the annular groove, and the static sealing device 8 is disposed between the dynamic sealing device 7 and the annular step.

[0049] By providing the static sealing device 8, the static sealing device 8 cooperates with the dynamic sealing device 7 to achieve better sealing.

[0050] In the preferred implementation of this embodiment, the static sealing device 8 comprises a graphite sealing ring and / or a second ceramic sealing ring. Both the graphite sealing ring and the ceramic sealing ring are resistant to high temperatures, and achieve adaptive sealing in a high temperature environment to achieve an oxygen-free atmosphere.

[0051] In the preferred implementation mode of this embodiment, the pushing device 3 is a pushing screw.

[0052] The push screw is an existing equipment. When the push screw rotates, it pushes the material to move along the axial direction of the push screw.

[0053] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A dynamic sealing device for a carbonization furnace, used for sealing a rotating cylinder and an inlet cylinder of a carbonization furnace or for sealing a rotating cylinder and an outlet cylinder of a carbonization furnace, wherein the rotating cylinder has a rotating cylinder end, the inlet cylinder and the outlet cylinder have fixed cylinder ends, the fixed cylinder ends are provided with an annular step, the rotating cylinder end extends into the fixed cylinder end, the outer side wall of the rotating cylinder end, the inner side wall of the fixed cylinder end and the annular step enclose an annular groove, characterized in that: The dynamic sealing device is arranged in the annular groove, and the dynamic sealing device includes a first ceramic sealing ring, a special metal sealing ring and an elastic clamping mechanism. The first ceramic sealing ring contacts the outer wall of the rotating cylinder end, and the special metal sealing ring contacts the inner wall of the fixed cylinder end. The elastic clamping mechanism applies an elastic reset force to the special metal sealing ring toward the annular step.

2. The dynamic sealing device according to claim 1, characterized in that: The elastic clamping mechanism includes a fixed seat, a clamping seat, a connecting plate, a pull rod and a spring. The fixed seat is relatively fixed to the end of the fixed cylinder, the clamping seat is pressed on the special metal sealing ring, the connecting plate is relatively fixed to the clamping seat, the pull rod is movably connected to the fixed seat along the axial direction of the special metal sealing ring, one end of the pull rod is relatively fixed to the connecting plate, and the spring is sleeved on the pull rod and applies an elastic reset force to the pull rod.

3. The dynamic sealing device according to claim 2, characterized in that: The spring is a compression spring or a tension spring.

4. The dynamic sealing device according to claim 2, characterized in that: The elastic pressing mechanism also includes a roller, which is mounted on the pressing seat and contacts the special metal sealing ring.

5. The dynamic sealing device according to claim 2, characterized in that: The elastic pressing mechanism includes a plurality of pressing seats, and the plurality of pressing seats of the same elastic pressing mechanism are connected to the same connecting plate.

6. The dynamic sealing device according to claim 1, characterized in that: The dynamic sealing device comprises a plurality of the elastic pressing mechanisms, and the plurality of the elastic pressing mechanisms press the special metal sealing ring at a plurality of different positions along the annular direction.

7. A sealing system for a carbonization furnace, characterized in that: It comprises a static sealing device and a dynamic sealing device as described in any one of claims 1 to 6, wherein the static sealing device is arranged in the annular groove, the static sealing device is arranged between the dynamic sealing device and the annular step, and the static sealing device comprises a graphite sealing ring and / or a second ceramic sealing ring.

8. A carbonization furnace, characterized in that: include: Fixed cylinder; A rotating cylinder is disposed inside the fixed cylinder and the two can rotate relative to each other, and two ends of the rotating cylinder extend out of two ends of the fixed cylinder respectively; A material pushing device, arranged inside the rotating cylinder, for pushing the material at one end of the rotating cylinder to the other end of the rotating cylinder; An inlet cylinder is provided at one end of the rotating cylinder and the two are interconnected and relatively rotatable, and the fixed cylinder end of the inlet cylinder and a rotating cylinder end of the rotating cylinder are sealed by the dynamic sealing device described in any one of claims 1 to 6 or the sealing system described in claim 7; The outlet cylinder is arranged at the other end of the rotating cylinder and the two are interconnected and can rotate relative to each other. The fixed cylinder end of the outlet cylinder and the other rotating cylinder end of the rotating cylinder are sealed by the dynamic sealing device described in any one of claims 1 to 6 or the sealing system described in claim 7.

9. The carbonization furnace according to claim 8, characterized in that: The pushing device is a pushing screw.

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