A rotary kiln sealing system and rotary kiln equipment

Abstract

The present invention provides a rotary kiln sealing system and a rotary kiln device, which relate to the field of sealing technology. It includes a first shell and a second shell. The second shell is spatially arranged outside the first shell, and a first gap is left between the first shell and the second shell. An elastic compensation joint is provided outside the second shell. By providing the first shell, the second shell and the elastic compensation joint, a strict seal of the outside of the rotary kiln sealing system is achieved. The double-layer shell structure leaves enough movable adjustment range in the upper, lower, left and right directions, so that when the rotary kiln sealing system is installed on the discharge cover, it will not be restricted as the rotary kiln rotates. The elastic compensation joint realizes compensation for swinging displacement. In addition, the double-layer shell structure can absorb the radiant heat of pyrolysis coal, making it easier to select the material of the elastic compensation joint of the external seal and having a longer service life. The structure provided by the present invention also avoids the shortening of the service life of the external elastic compensation joint due to contact with radiant heat.

Description

Technical Field

[0001] The present invention relates to the field of sealing technology, and in particular to a rotary kiln sealing system and rotary kiln equipment. Background Art

[0002] At present, the straightness of the axis of the rotary kiln is often the worst at the beginning of startup, and the rotary kiln also has the largest vibration. However, as the rotary kiln runs for a long time, the straightness will tend to be a straight line, and the vibration of the rotary kiln will become smaller and smaller, but the vibration phenomenon always exists. The rotary kiln discharge cover swings up and down and left and right as the rotary kiln rotates, and the discharge port swings with the up and down and left and right swings of the discharge cover. For the low-temperature pyrolysis of coal, oil shale or biomass, the coal gas is both toxic and has major safety issues, which requires strict sealing. Not only does it require strict sealing between the discharge cover and the rotary kiln tail, but it also requires that the discharge sealing mechanism between the discharge port of the discharge cover and the receiving silo port can meet the requirements of both up and down swinging and sealing.

[0003] In view of this, the present invention is proposed. Summary of the Invention

[0004] The object of the present invention is to provide a rotary kiln sealing system and a rotary kiln device to solve the above technical problems.

[0005] The present invention is achieved in that:

[0006] A rotary kiln sealing system includes a rotary kiln material cover material sealing system and a rotary kiln material cover gas outlet sealing system, wherein the rotary kiln material cover material sealing system includes a material discharge port, a material discharge sealing mechanism and a receiving material bin, and the material discharge port, the material discharge sealing mechanism and the receiving material bin are connected in sequence; the rotary kiln material cover gas outlet sealing system includes an air outlet, a gas sealing mechanism and a gas pipeline, and the air outlet, the gas sealing mechanism and the gas pipeline are connected in sequence; the rotary kiln sealing system includes a first shell and a second shell, the second shell space is annularly arranged outside the first shell, and the first shell and the first shell are connected A first gap is left between the two shells, one end of the first shell is fixedly connected to the first flange, and the second shell is fixedly connected to the second flange in a direction away from the first flange. The other end of the first shell away from the first flange is a free end located in the second flange, and an end of the second shell close to the first flange leaves a second gap with the first flange. An elastic compensation joint is provided on the outside of the second shell, and both ends of the elastic compensation joint are respectively sealed with the first flange and the second flange. The elastic compensation joint and the first flange and the second flange form a sealed cavity, so that the distance between the first flange and the second flange can be expanded and contracted.

[0007] A first annular plate is fixedly connected to the end surface of the first shell near the second flange, and the first shell, the first flange and the first annular plate form a cavity structure. A second annular plate is fixedly connected to the end surface of the second shell near the first flange, and the second shell, the second flange and the second annular plate form a cavity structure.

[0008] When the rotary kiln discharge cover moves up, down, left and right as the rotary kiln rotates, by connecting the rotary kiln sealing system, the displacement jump compensation of the rotary kiln sealing system can be guaranteed, and at the same time, the strict sealing of the discharge system can be guaranteed.

[0009] Specifically, when the rotary kiln discharge cover undergoes vertical and horizontal displacement as the rotary kiln rotates, the rotary kiln sealing system provided by the present invention can be connected to cushion this displacement via an elastic compensating joint disposed between the first and second flanges. To prevent collision between the first and second shells, a first gap is provided between the first and second shells to provide sufficient space for displacement. Furthermore, a second gap is provided to prevent hard contact between the end face of the second shell and the first flange.

[0010] By setting up a double-layer shell (first shell and second shell), leaving sufficient movable adjustment range in the upper, lower, left and right directions, and providing elastic compensation joints, the displacement of the rotary kiln sealing mechanism is not restricted when the discharge cover rotates around the rotary kiln, while meeting the strict sealing of the sealing mechanism.

[0011] The rotary kiln sealing system can be a rotary kiln discharge cover discharge sealing system and a rotary kiln discharge cover gas outlet sealing system. The rotary kiln discharge cover discharge sealing system includes a discharge port, a discharge sealing mechanism, and a receiving silo, which are sequentially connected. The rotary kiln discharge cover gas outlet sealing system includes a gas outlet, a gas sealing mechanism, and a gas pipeline, which are sequentially connected.

[0012] In a preferred embodiment of the present invention, the rotary kiln sealing system is a rotary kiln material cover material sealing system and a rotary kiln material cover air outlet sealing system, a water cooling chamber is provided in the first shell and the second shell, a first water inlet and a first water outlet are provided on the outer peripheral wall of the first shell, a second water inlet and a second water outlet are provided on the outer peripheral wall of the second shell, the first water inlet, the first water outlet, the second water inlet and the second water outlet pass through the elastic compensation joint, and the first water inlet, the first water outlet, the second water inlet and the second water outlet are sealed with the elastic compensation joint.

[0013] The positions of the first water inlet, the first water outlet, the second water inlet and the second water outlet on the outer peripheral wall of the water cooling jacket can be adaptively adjusted according to actual needs.

[0014] The first and second water-cooling jackets are equipped with chambers to accommodate heat exchange media. The two double-layered water-cooling jackets (first and second) ensure that any heat radiated from the pyrolysis coal that may be exposed to the elastic compensating joint is absorbed by the two double-layered water-cooling jackets, allowing for better material selection for the external elastic compensating joint.

[0015] In addition, the cavity adjacent to the outside of the rotary kiln sealing system is relatively airtight. This structure reduces the internal radiation heat of the elastic compensation joint and makes the material selection relatively easy.

[0016] The elastic compensation joint is an elastic rubber product or a metal corrugated compensation joint.

[0017] In a preferred embodiment of the present invention, when the above-mentioned elastic compensation joint is a metal corrugated compensation joint, the first water inlet, the first water outlet, the second water inlet and the second water outlet are all composed of three sections of connecting pipes, the first water cooling jacket and the second water cooling jacket are both connected to the first metal rigid pipe, the elastic compensation joint is connected to the second metal rigid pipe, and the first metal rigid pipe and the second metal rigid pipe are connected by a first hose.

[0018] In a preferred embodiment of the present invention, the metal corrugated compensation joint is a metal expansion joint made of stainless steel with a thickness of 1-2 mm.

[0019] The hose has the function of compensating for the position change of the rotary kiln sealing mechanism.

[0020] In a preferred embodiment of the present invention, when the elastic compensation joint is an elastic rubber product, the first water inlet, the first water outlet, the second water inlet and the second water outlet are all composed of two sections of connecting pipes, the third metal hard pipe is connected to the first water cooling jacket and the second water cooling jacket, and the second hose is connected to the elastic compensation joint, and the third metal hard pipe is sealed to the second hose.

[0021] In other embodiments, the rotary kiln sealing system comprises a rotary kiln lower hood material sealing system and a rotary kiln lower hood air outlet sealing system, wherein a first insulation layer is provided within the first shell, and a second insulation layer is provided within the second shell. These two insulation structures ensure that any contact and / or exposure of the elastic expansion joint to radiant heat from the pyrolyzing coal is substantially insulated by the two insulation structures.

[0022] In one embodiment, both the first and second shells are provided with ventilation holes. There is at least one ventilation hole. This ensures that gas within the insulation structure can flow in and out when the shells expand and contract, preventing deformation of the shells due to thermal expansion and contraction.

[0023] In one embodiment, at least one air-permeable gap is left at the connection between the first shell and the first flange, and at least one air-permeable gap is left at the connection between the second shell and the second flange.

[0024] In one embodiment, at least one air-permeable gap is left at the connection between the first shell and the first annular plate; at least one air-permeable gap is left at the connection between the second shell and the second annular plate.

[0025] In other embodiments, the rotary kiln sealing system is a rotary kiln material hood material discharge sealing system and a rotary kiln material hood air outlet sealing system, a first insulation layer is provided in the first shell, a water-cooling chamber is provided in the second shell, a second water inlet and a second water outlet are provided on the outer peripheral wall of the second shell, the second water inlet and the second water outlet pass through the elastic compensation joint, and the second water inlet and the second water outlet are sealed with the elastic compensation joint.

[0026] The second shell may be provided with a water-cooling chamber, and the radiant heat in the shell may be taken away by circulating water, thereby meeting the thermal insulation requirements.

[0027] In a preferred embodiment of the present invention, the first flange and the second flange are annular, the inner radius of the second flange is D, the inner radius of the first flange is B, the side wall thickness of the first flange is C, the spacing of the first gap is A, and D>A+B+C.

[0028] If the inner radius D of the second flange is less than A+B+C, the first water-cooling jacket and the second water-cooling jacket may collide with each other, affecting the normal use of the rotary kiln sealing mechanism.

[0029] The value of (first gap) A is the maximum value of the rotary kiln lower cover jumping up and down and left and right around the rotary kiln tail. If the value of A is too small, it will also cause the first water cooling jacket and the second water cooling jacket to collide and be damaged.

[0030] In a preferred embodiment of the present invention, the thickness of the second annular plate is F, the spacing of the second gap is E, and E>A+F.

[0031] In a preferred embodiment of the present invention, the second water-cooling jacket, the second flange, and the second annular plate are welded to form a cavity structure.

[0032] In a preferred embodiment of the present invention, a first annular plate is fixedly connected to the end surface of the first water cooling jacket close to the second flange, and the first water cooling jacket, the first flange and the first annular plate form a cavity structure.

[0033] A rotary kiln device comprises a rotary kiln tail, a rotary kiln discharge cover and a rotary kiln sealing system. The rotary kiln discharge cover is arranged on the outer periphery of the rotary kiln tail.

[0034] When the unloading sealing system is displaced up, down, left, and right as the rotary kiln rotates, by connecting the rotary kiln sealing system provided by the present invention, the displacement can be buffered by the elastic compensation joint provided between the first flange and the second flange.

[0035] The rotary kiln sealing system is a rotary kiln lower material cover air outlet sealing system, and the air outlet of the rotary kiln lower material cover air outlet sealing system is opened above the lower material cover.

[0036] In other embodiments, the air outlet of the air outlet sealing system of the rotary kiln lower material cover is opened on the end surface of the lower material cover.

[0037] In other embodiments, the rotary kiln equipment's discharge hood gas sealing system and the rotary kiln discharge hood discharge sealing system share a discharge sealing mechanism. Solid material and gas share a discharge port and discharge sealing mechanism. The solid material and gas are separated in a receiving silo, where the solid material continues to fall. An air outlet is provided near the feed port of the receiving silo, connected to a gas pipeline.

[0038] That is, after the coal gas and solid materials pass through the rotary kiln discharge system, the coal gas is separated in the receiving silo.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] The present invention provides a rotary kiln sealing system and rotary kiln equipment. By providing a first shell, a second shell and an elastic compensation joint, a strict seal of the outside of the rotary kiln sealing system is achieved. The double-layer shell structure leaves enough movable adjustment range in the up and down, left and right directions, so that when the rotary kiln sealing system is installed on the discharge cover, it will not be restricted as the rotary kiln rotates. The elastic compensation joint achieves compensation for the swing displacement. In addition, the double-layer shell structure can absorb the radiant heat of pyrolysis coal, making the material of the external sealing elastic compensation joint easier to select and the service life longer. The structure provided by the present invention also avoids the external elastic compensation joint from being exposed to radiant heat, resulting in a shortened service life. Therefore, the rotary kiln equipment of the present invention can not only meet the swing requirements of up and down, left and right, and compensate for the swing requirements of up and down, left and right, but also meet the sealing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0042] Figure 1 Schematic diagram of the rotary kiln equipment of Examples 1-4;

[0043] Figure 2 This is an internal schematic diagram of the blanking sealing mechanism provided in Example 1;

[0044] Figure 3 is an internal schematic diagram of the gas sealing mechanism provided in Example 1;

[0045] Figure 4 This is an internal schematic diagram of the blanking sealing mechanism provided in Example 2;

[0046] Figure 5 This is a schematic diagram of the internal structure of the gas sealing mechanism provided in Example 2;

[0047] Figure 6 is a general schematic diagram of the rotary kiln equipment of Examples 3 and 4;

[0048] Figure 7 This is a schematic diagram of the internal structure of the gas sealing mechanism provided in Example 5;

[0049] Figure 8 This is a schematic diagram of the internal structure of the gas sealing mechanism provided in Example 6;

[0050] Figure 9 This is a schematic diagram of the internal structure of the gas sealing mechanism provided in Example 7;

[0051] Figure 10 This is an internal schematic diagram of the blanking sealing mechanism provided in Example 8;

[0052] Figure 11 This is an internal schematic diagram of the blanking sealing mechanism provided in Example 9;

[0053] Figure 12 This is an internal schematic diagram of the blanking sealing mechanism provided in Example 10;

[0054] Figure 13 This is a general schematic diagram of the rotary kiln equipment provided in Example 13.

[0055] Icons: 1-rotary kiln tail; 2-rotary kiln discharge cover; 3-rotary kiln discharge cover discharge sealing system; 4-rotary kiln discharge cover air outlet sealing system; 5-rotary kiln sealing system; 21-horizontal cylinder; 22-end face; 31-discharge port; 32-discharge sealing mechanism; 33-receiving silo port; 34-discharge silo; 3211-first flange; 3221-second flange; 3212-first shell; 32121-overflow pipe; 3213-first annular plate; 3214-first water inlet; 3215-first water outlet; 3222-second shell; 3223-second annular plate; 3224-second water inlet; 3225-second water outlet; 323-elastic compensation joint; 41-air outlet; 42-gas sealing mechanism; 43-gas pipeline. DETAILED DESCRIPTION

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0057] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0058] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0059] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "clockwise," "counterclockwise," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0060] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0061] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0062] Example 1

[0063] Reference Figure 1 and Figure 2 As shown, a rotary kiln apparatus includes a rotary kiln tail 1, a rotary kiln discharge hood 2, and a rotary kiln sealing system 5. The rotary kiln sealing system 5 includes a rotary kiln discharge hood gas sealing system 4 and a rotary kiln discharge hood material sealing system 3. The rotary kiln discharge hood gas sealing system 4 is used for coal gas discharge, while the rotary kiln discharge hood material sealing system 3 is used for solid materials.

[0064] In this embodiment, the rotary kiln material cover air outlet sealing system 4 is arranged at the top of the rotary kiln material cover 2 , and the rotary kiln material cover material discharge sealing system 3 is arranged at the bottom of the rotary kiln material cover 2 .

[0065] The rotary kiln unloading cover 2 is composed of a transverse cylinder 21 and an end face 22. The transverse cylinder 21 and the end face 22 are fixedly welded. The rotary kiln unloading cover 2 is arranged on the outer periphery of the rotary kiln tail 1. When in use, the rotary kiln unloading cover 2 can jump up and down and left and right with the rotation of the rotary kiln tail 1. The maximum amplitude of the jump is A, and A is less than 50mm.

[0066] Furthermore, the rotary kiln discharge cover discharge sealing system 3 includes a discharge port 31, a discharge sealing mechanism 32, and a receiving silo port 33. One end of the discharge port 31 is sealed and connected to the bottom end of the transverse cylinder 21, and the other end of the discharge port 31 is connected to the receiving silo port 33 through the discharge sealing mechanism 32. The discharge port 31, the discharge sealing mechanism 32, and the receiving silo port 33 are connected to each other via a flange.

[0067] During use, the material can be delivered from the discharge port 31 into the discharge sealing mechanism 32 and discharged from the receiving port 33 .

[0068] Reference Figure 2As shown, in this embodiment, the blanking sealing mechanism 32 includes a first shell 3212 and a second shell 3222. The second shell 3222 is spatially arranged outside the first shell 3212. An elastic compensation joint 323 is provided outside the second shell 3222. One end of the first shell 3212 is fixedly connected to the first flange 3211. The other end of the first shell 3212 away from the first flange 3211 is a free end located in the second flange 3221. The free end can be displaced up and down along the long arm of the first shell 3212, and can also be displaced left and right in the first gap. The second shell 3222 is fixedly connected to the second flange 3221 in the direction away from the first flange 3211, and the two ends of the elastic compensation joint 323 are respectively sealed with the first flange 3211 and the second flange 3221 so that the distance between the first flange 3211 and the second flange 3221 can be freely expanded and contracted. A first gap is left between the first shell 3212 and the second shell 3222, and a second gap is left between the end of the second shell 3222 close to the first flange 3211 and the first flange 3211.

[0069] In this embodiment, the spacing of the first gap is set to A. The maximum spacing of the first gap is the maximum vertical spacing between the first shell 3212 and the second shell 3222 .

[0070] The inner diameter of the second flange 3221 is larger than that of the first flange 3211. The inner radius of the first flange 3211 is B. The first shell 3212 is arranged along the lower end surface of the inner circle of the first flange 3211 and extends downward to the end surface of the second flange 3221. The first annular plate 3213 is sealed and welded to the lower end surface of the first shell 3212. The first shell 3212, the first flange 3211 and the first annular plate 3213 form a welded sealing structure. The side wall thickness of the first shell 3212 is C, and the inner radius D of the second flange 3221 is greater than A+B+C.

[0071] A second housing 3222 is positioned along the inner circumference of the second flange 3221, extending upward to a distance (second gap) E from the lower end face of the first flange. A second annular plate 3223 is welded to the upper end face of the second housing 3222. The thickness of the second annular plate 3223 is F, where E > A + F. The second housing 3222, second flange 3221, and second annular plate 3223 form a welded seal.

[0072] A first water inlet 3214 and a first water outlet 3215 are provided on the outer peripheral wall of the first shell 3212 and are connected. A second water inlet 3224 and a second water outlet 3225 are provided on the outer peripheral wall of the second shell 3222 and are connected.

[0073] The first water inlet 3214 , the first water outlet 3215 , the second water inlet 3224 and the second water outlet 3225 pass through the elastic compensation joint 323 .

[0074] An elastic compensation joint 323 is provided on the outer periphery of the second housing 3222 between the first flange 3211 and the second flange 3221. The elastic compensation joint 323 is sealedly connected to the first flange 3211 and the second flange 3221 at the top and bottom, respectively. The elastic compensation joint 323 and the first flange 3211 and the second flange 3221 form a sealed cavity.

[0075] In this embodiment, the elastic compensation joint 323 is made of a metal corrugated compensation joint. In addition, in other embodiments, the elastic compensation joint 323 may also be made of a rubber product, as long as the elastic compensation function is met, it is within the scope of protection of the present invention.

[0076] In this embodiment, refer to Figure 2 As shown, the first water inlet 3214 and the first water outlet 3215 are both provided at the top of the first shell 3212, and the second water inlet 3224 and the second water outlet 3225 are both provided at the top of the second shell 3222. When in use, the heat exchange medium (water) is used to cool the material in the sealing mechanism to reduce the release of heat radiation to the outside.

[0077] In this embodiment, the first water inlet 3214, the first water outlet 3215, and the second water inlet 3224, the second water outlet 3225 are each constructed from three sections (not shown). One section of metal rigid pipe connects to the first shell 3212 and the second shell 3222, while another section of metal rigid pipe connects to the elastic compensation joint 323. A rubber hose connects between the two sections of metal rigid pipe. Both sections are sealed, and the rubber hose compensates for positional variations in the discharge mechanism.

[0078] The rotary kiln lower hood gas outlet sealing system 4 includes a gas outlet 41, a gas sealing mechanism 42, and a gas pipeline 43, which are connected in sequence. The gas outlet 41 is connected to the top of the rotary kiln lower hood 2. During use, gas is discharged from the top of the rotary kiln lower hood 2, passes through the gas sealing mechanism 42, and is discharged from the gas pipeline 43. The gas pipeline 43 can be connected to an external gas collection device or purification device.

[0079] In this embodiment, the structure of the gas sealing mechanism 42 is as follows: Figure 3 As shown, along Figure 3 Connect the gas sealing mechanism 42 to the Figure 1 On the gas outlet 41, the first flange 3211 of the gas sealing mechanism 42 is connected to Figure 1 The air outlet 41 is connected with a flange.

[0080] Figure 3In the embodiment, the gas sealing mechanism 42 includes a first shell 3212 and a second shell 3222 . The second shell 3222 is spatially arranged outside the first shell 3212 . An elastic compensation joint 323 is provided outside the second shell 3222 .

[0081] The bottom end of the first shell 3212 is fixedly connected to the first flange 3211, and the top end of the second shell 3222 is fixedly connected to the second flange 3221. The two ends of the elastic compensation joint 323 are respectively sealed with the first flange 3211 and the second flange 3221 so that the distance between the first flange 3211 and the second flange 3221 can be freely expanded and contracted. A first gap is left between the first shell 3212 and the second shell 3222, and a second gap is left between the end of the second shell 3222 close to the first flange 3211 and the first flange 3211.

[0082] Reference Figure 4 As shown, a first water inlet 3214 is provided below the first shell 3212, through which water enters the first shell 3212. An overflow pipe 32121 is embedded in the shell on the other side of the first shell 3212. The overflow pipe 32121 is L-shaped, with one end extending to the top of the chamber of the first shell 3212 and the other end communicating with a first water outlet 3215 outside the first shell 3212.

[0083] During use, cooling water enters the chamber of the first shell 3212 from the first water inlet 3214 below the first shell 3212. As the liquid level rises to the height of the overflow pipe 32121, the water flows into the overflow pipe 32121 and flows out from the first water outlet 3215 below the first shell 3212. This achieves cooling and heat insulation heat exchange.

[0084] The second shell 3222 of the gas sealing mechanism 42 is also provided with a water cooling chamber. The second water inlet 3224 and the second water outlet 3225 are respectively provided on both sides of the second shell 3222. In this embodiment, the second water inlet 3224 and the second water outlet 3225 of the gas sealing mechanism 42 are respectively provided above the second shell 3222. Figure 3 Water enters the second water inlet 3224 on the left side of the second shell 3222 , and when the liquid level exceeds the height of the second water outlet 3225 , the water flows out of the second shell 3222 .

[0085] In this embodiment, by Figure 2 and Figure 3 The double-layer water-cooled shell structure absorbs the radiant heat of materials and gas.

[0086] Example 2

[0087] Reference Figure 1 、 Figure 4and Figure 5 As shown, the difference from Example 1 is:

[0088] In this embodiment, the elastic compensating joint 323 of the gas sealing mechanism 42 and the blanking sealing mechanism 32 are both made of elastic rubber products; while in Example 1, the elastic compensating joint 323 of the gas sealing mechanism 42 and the blanking sealing mechanism 32 are both made of metal corrugated compensating joints.

[0089] In this embodiment, the second water inlet 3224 of the blanking sealing mechanism 32 is arranged at the bottom of the second shell 3222, and the second water outlet 3225 of the blanking sealing mechanism 32 is arranged at the top of the second shell 3222; Figure 1 、 Figure 2 In the figure, the second water inlet 3224 and the second water outlet 3225 of the blanking sealing mechanism 32 are both arranged at the top of the second shell 3222 .

[0090] In this embodiment, the first water inlet 3214 and first water outlet 3215, as well as the second water inlet 3224 and second water outlet 3225 of the blanking sealing mechanism 32, are each constructed from two connected sections (not shown). Connected to the first shell 3212 and the second shell 3222 is a metal rigid tube, and the other section is a metal flexible tube. One end of the metal flexible tube is sealed to the metal rigid tube, and the other end of the metal flexible tube passes through and is sealed to the elastic compensation joint 323. The metal flexible tube compensates for positional variations of the blanking mechanism.

[0091] In this embodiment, the structure of the gas sealing mechanism 42 is as follows: Figure 5 As shown, Figure 5 Compared with Example 1 Figure 3 The difference is that the second water inlet 3224 of the second shell 3222 of the gas sealing mechanism 42 is opened at the bottom of the second shell 3222, and the rest of the structure is the same as the gas sealing mechanism 42 provided in Example 1.

[0092] When using the gas sealing mechanism 42 of this embodiment for gas heat exchange, cold water enters the second water inlet 3224 at the bottom of the second shell 3222. When the liquid level in the second shell 3222 rises to the level of the second water outlet 3225, the water flows out through the second water outlet 3225. In the first shell, cooling water enters the chamber of the first shell 3212 from the first water inlet 3214 below the first shell 3212. As the liquid level rises to the level of the overflow pipe 32121, the water flows into the overflow pipe 32121 and out through the first water outlet 3215 below the first shell 3212. This achieves cooling and heat insulation heat exchange.

[0093] Example 3

[0094] Reference Figure 6 As shown, the difference from Example 1 is that the rotary kiln lower material cover air outlet sealing system 4 of Example 1 is located at the top of the rotary kiln lower material cover 2; the rotary kiln lower material cover air outlet sealing system 4 of this embodiment is on the end face of the rotary kiln lower material cover 2, and the rotary kiln lower material cover lower material sealing system 3 is located at the bottom end of the rotary kiln lower material cover 2. The rest of the structure is the same as that of Example 1.

[0095] Example 4

[0096] Reference Figure 6 As shown, the difference from Example 2 is that the rotary kiln lower material cover air outlet sealing system 4 of Example 2 is located at the top of the rotary kiln lower material cover 2; the rotary kiln lower material cover air outlet sealing system 4 of this embodiment is on the end face of the rotary kiln lower material cover 2, and the rotary kiln lower material cover lower material sealing system 3 is located at the bottom end of the rotary kiln lower material cover 2. The rest of the structure is the same as that of Example 2.

[0097] Example 5

[0098] This embodiment provides a rotary kiln device. In this embodiment, the structure of the material sealing mechanism 32 is exactly the same as that of the material sealing mechanism 32 in Example 1. The structure of the gas sealing mechanism 42 is similar to that of the rotary kiln device. Figure 7 The double-layer shell does not include the first water inlet 3214 , the first water outlet 3215 , the second water inlet 3224 and the second water outlet 3225 .

[0099] The double-layer shells are both provided with insulation layers. Specifically, the first shell 3212 is provided with a first insulation layer, and the second shell 3222 is provided with a second insulation layer.

[0100] In this embodiment, two vent holes are left on the outer shell of the first shell 3212 of the gas sealing mechanism 42 , and two vent holes are left on the outer shell of the second shell 3222 .

[0101] In other embodiments, at least one air-permeable gap may be left at the welding connection between the first flange 3211 and the first annular plate 3213, and the second shell 3222 forms a welding connection structure with the second flange 3221 and the second annular plate 3223 and leaves at least one air-permeable gap.

[0102] Example 6

[0103] This embodiment provides a rotary kiln device. In this embodiment, the structure of the material sealing mechanism 32 is exactly the same as that of the material sealing mechanism 32 in Example 1. The structure of the gas sealing mechanism 42 is similar to that of the rotary kiln device. Figure 8 shown.

[0104] A first insulation layer is provided in the first shell 3212 , and the structure of the first shell 3212 is the same as that of Example 5. A water cooling chamber is provided in the second shell 3222 , and a second water inlet 3224 and a second water outlet 3225 are provided on both sides of the second shell 3222 .

[0105] In this embodiment, the second water inlet 3224 and the second water outlet 3225 are both provided on the top of the second shell 3222. When in use, water is introduced from the second water inlet 3224. When the liquid level in the water cooling chamber exceeds the second water outlet 3225, the circulating water overflows from the second water outlet 3225.

[0106] Example 7

[0107] This embodiment provides a rotary kiln device, referring to Figure 9 As shown, compared with Example 6, the difference is that the second water inlet 3224 of the second shell 3222 in this embodiment is arranged below the second shell 3222, and the rest of the structure is the same as that of Example 6.

[0108] Example 8

[0109] This embodiment provides a rotary kiln device, referring to Figure 1 and Figure 10 As shown, it includes a rotary kiln tail 1, a rotary kiln discharge cover 2 and a rotary kiln sealing system 5. The rotary kiln sealing system 5 includes a rotary kiln discharge cover air outlet sealing system 4 and a rotary kiln discharge cover discharge sealing system 3.

[0110] The rotary kiln unloading cover unloading sealing system 3 includes an unloading port 31, an unloading sealing mechanism 32 and a receiving material bin port 33. The structure of the unloading sealing mechanism 32 is shown in FIG. Figure 10 The first shell 3212 is provided with a first insulation layer, but does not include a water cooling cavity, a first water inlet 3214 and a first water outlet 3215 .

[0111] A ventilation gap is left at the connection between the outer shell of the first shell 3212 and the first annular plate 3213. The rest of the connection method is the same as that of embodiment 1.

[0112] The rotary kiln lower cover gas outlet sealing system 4 comprises a gas outlet 41, a gas sealing mechanism 42 and a gas pipeline 43 which are connected in sequence.

[0113] The structure of the gas sealing mechanism 42 is similar to that of the embodiment 1. Figure 3 As shown, along Figure 3 Connect the gas sealing mechanism 42 to the Figure 1 On the gas outlet 41, the first flange 3211 of the gas sealing mechanism 42 is connected to Figure 1 The air outlet 41 is connected with a flange.

[0114] Example 9

[0115] This embodiment provides a rotary kiln device, referring to Figure 1 and Figure 11 As shown, the rotary kiln equipment includes a gas sealing mechanism 42 and a material sealing mechanism 32. The structure of the material sealing mechanism 32 is shown in FIG. Figure 11 As shown, the structure of the gas sealing mechanism 42 is the same as that of the gas sealing mechanism 42 in Example 1. The structure of the blanking sealing mechanism 32 differs from that of Example 8 in that the second water inlet 3224 on the outside of the second housing 3222 is located at the bottom, and the second water outlet 3225 is located at the top. The remaining structure is consistent with Example 8.

[0116] Example 10

[0117] This embodiment provides a rotary kiln device, referring to Figure 1 and Figure 12 As shown, the rotary kiln equipment includes a gas sealing mechanism 42 and a material sealing mechanism 32. The structure of the material sealing mechanism 32 is shown in FIG. Figure 12 As shown, the structure of the gas sealing mechanism 42 is the same as that of the gas sealing mechanism 42 of Example 1. The structure of the blanking sealing mechanism 32 is different from that of the blanking sealing mechanism of Example 8 in that the structure of the second shell 3222 is different.

[0118] In this embodiment, the second shell 3222 is filled with a second thermal insulation layer, and an air hole (not shown) is provided on the outside of the second shell 3222 .

[0119] Example 11

[0120] Reference Figure 13 As shown, unlike Example 1, in Example 1, the rotary kiln discharge cover gas outlet sealing system 4 is located at the top of the rotary kiln discharge cover 2, and the rotary kiln discharge cover material sealing system 3 is located at the bottom of the rotary kiln discharge cover 2. In contrast, the rotary kiln discharge cover gas outlet sealing system 4 and the rotary kiln discharge cover material sealing system 3 of this embodiment share a discharge sealing mechanism 32. A discharge bin 34 is fixedly connected to the bottom of the receiving bin opening 33, and an air outlet 41 is provided next to the discharge bin 34, which is connected to a gas pipeline 43.

[0121] During use, smoke and materials enter the discharge bin 34 from the discharge sealing mechanism 32 at the same time, and are discharged from the gas outlet 41 at the top of the discharge bin 34 after gas separation.

[0122] The blanking sealing mechanism 32 in this embodiment has the same structure as the blanking sealing mechanism 32 in embodiment 1.

[0123] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. 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 rotary kiln sealing system, characterized in that: The rotary kiln sealing system includes a rotary kiln material cover material sealing system and a rotary kiln material cover gas outlet sealing system, wherein the rotary kiln material cover material sealing system includes a material discharge port, a material discharge sealing mechanism and a receiving material bin, and the material discharge port, the material discharge sealing mechanism and the receiving material bin are connected in sequence; the rotary kiln material cover gas outlet sealing system includes an air outlet, a gas sealing mechanism and a gas pipeline, and the air outlet, the gas sealing mechanism and the gas pipeline are connected in sequence; the material discharge sealing mechanism and the gas sealing mechanism of the rotary kiln sealing system both include a first shell and a second shell, the second shell space is annularly arranged outside the first shell, and the first shell and the second shell are connected. A first gap is left between the shells, one end of the first shell is fixedly connected to a first flange, and the second shell is fixedly connected to a second flange in a direction away from the first flange. The other end of the first shell away from the first flange is a free end located within the second flange. An end of the second shell close to the first flange leaves a second gap with the first flange. An elastic compensation joint is provided on the outside of the second shell, and both ends of the elastic compensation joint are respectively sealed with the first flange and the second flange. The elastic compensation joint and the first flange and the second flange form a sealed cavity, so that the distance between the first flange and the second flange can be expanded and contracted. A first annular plate is fixedly connected to the end surface of the first shell near the second flange, and the first shell, the first flange, and the first annular plate form a cavity structure; a second annular plate is fixedly connected to the end surface of the second shell near the first flange, and the second shell, the second flange, and the second annular plate form a cavity structure; When the first shell and the second shell in the blanking sealing mechanism and the gas sealing mechanism are both provided with a water-cooled sealing cavity, the outer peripheral wall of the first shell is provided with a first water inlet and a first water outlet, and the outer peripheral wall of the second shell is provided with a second water inlet and a second water outlet, the first water inlet, the first water outlet, the second water inlet and the second water outlet pass through the elastic compensation joint, and the first water inlet, the first water outlet, the second water inlet and the second water outlet are sealed with the elastic compensation joint; When a first insulation layer is provided in the first shell of the material sealing mechanism and the gas sealing mechanism and a second insulation layer is provided in the second shell, air holes are provided on the outer circumference of the first shell and the second shell of the material sealing mechanism and the gas sealing mechanism, and the number of the air holes is at least one; When a first insulation layer is provided in the first shell of the blanking sealing mechanism and the gas sealing mechanism, and a water-cooling chamber is provided in the second shell, a second water inlet and a second water outlet are provided on the outer peripheral wall of the second shell, the second water inlet and the second water outlet pass through the elastic compensation joint, and the second water inlet and the second water outlet are sealed with the elastic compensation joint.

2. The rotary kiln sealing system according to claim 1, characterized in that: The elastic compensation joints in the blanking sealing mechanism and the gas sealing mechanism are elastic rubber products or metal corrugated compensation joints.

3. The rotary kiln sealing system according to claim 2, characterized in that: When the elastic compensation joint in the blanking sealing mechanism and the gas sealing mechanism is a metal corrugated compensation joint, the first water inlet, the first water outlet, the second water inlet and the second water outlet are all composed of three sections of connecting pipes, the first shell and the second shell are both connected to a first metal hard pipe, the elastic compensation joint is connected to a second metal hard pipe, and the first metal hard pipe and the second metal hard pipe are connected by a first hose.

4. The rotary kiln sealing system according to claim 2, characterized in that: When the elastic compensation joint in the blanking sealing mechanism and the gas sealing mechanism is an elastic rubber product, the first water inlet, the first water outlet, the second water inlet and the second water outlet are all composed of two sections of connecting pipes, and the third metal hard pipe is connected to the first shell and the second shell, and the second hose is connected to the elastic compensation joint, and the third metal hard pipe is sealed with the second hose.

5. The rotary kiln sealing system according to claim 1, characterized in that: At least one air-permeable gap is left at the connection between the first shell and the first flange in the blanking sealing mechanism and the gas sealing mechanism, and at least one air-permeable gap is left at the connection between the second shell and the second flange.

6. The rotary kiln sealing system according to claim 1, characterized in that: At least one air-permeable gap is left at the connection between the first shell and the first annular plate in the blanking sealing mechanism and the gas sealing mechanism; at least one air-permeable gap is left at the connection between the second shell and the second annular plate.

7. The rotary kiln sealing system according to claim 1, characterized in that: The first flange and the second flange in the blanking sealing mechanism and the gas sealing mechanism are annular, the inner radius of the second flange is D, the inner radius of the first flange is B, the side wall thickness of the first flange is C, the spacing of the first gap is A, and D>A+B+C.

8. The rotary kiln sealing system according to claim 7, characterized in that: The thickness of the second annular plate in the blanking sealing mechanism and the gas sealing mechanism is F, the spacing of the second gap is E, and E>A+F.

9. A rotary kiln device, characterized in that: The rotary kiln comprises a rotary kiln tail, a rotary kiln discharge cover and the rotary kiln sealing system according to any one of claims 1 to 8.

10. The rotary kiln equipment according to claim 9, characterized in that: The air outlet of the air outlet sealing system of the rotary kiln lower material cover is opened on the end surface of the lower material cover.

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