CN217636711U - Sealing device of rotary kiln pyrolysis furnace - Google Patents

Abstract

The utility model discloses a sealing device of a rotary kiln pyrolysis furnace, which comprises an inner bushing, an outer bushing, a sealing layer and a conveyor, wherein the inner bushing is used for being hermetically connected with the rotary kiln; the outer bushing is used for being hermetically connected with the material box, the outer bushing is sleeved on the periphery of the inner bushing, and a filling cavity arranged around the inner bushing is arranged between the outer bushing and the inner bushing; the sealing layer is arranged in the filling cavity and comprises sealing filler and a sealing capsule which are respectively arranged around the inner bushing; the conveyor is connected with the sealing capsule and feeds pressurized fluid into the sealing capsule so as to drive the sealing filler to abut against the outer wall of the inner lining and the inner wall of the outer lining through the sealing capsule. The utility model discloses a take the pressure fluid to make the expansion of sealing capsule to fill the volume that the packings reduced because of wearing and tearing, make the packings sticis in the outer wall of neck bush and the inner wall of outer liner, and keep invariable sealed specific pressure, it is sealed effectual, effectively avoid the schizolysis gas to leak, safe and reliable.

Description

Sealing device of rotary kiln pyrolysis furnace

Technical Field

The utility model belongs to the technical field of the rotary kiln pyrolysis oven technique and specifically relates to a sealing device of rotary kiln pyrolysis oven is related to.

Background

The rotary kiln pyrolysis furnace is emerging equipment for treating hazardous waste containing organic matters. Because hazardous wastes are various in types and complex in components, pyrolysis gas generated by cracking organic matters under a high-temperature working condition has the characteristics of flammability, explosiveness and strong toxicity, a rotary kiln pyrolysis furnace must be operated at a slight positive pressure, and once leakage occurs, great harm is caused to human health and environment. Therefore, it is necessary to pay attention to the sealing performance of the rotary kiln pyrolysis furnace.

In the operation process of the rotary kiln pyrolysis furnace, the abrasion to the sealing filler is large due to the friction effect, the temperature influence and other factors. In the related technology, the rebound resilience of the sealing filler is poor, and gaps generated due to abrasion cannot be filled in time, so that sealing failure is caused, cracked gas is leaked, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a rotary kiln pyrolysis oven's sealing device makes sealed capsule inflation through taking the pressure fluid to fill the volume that the packings reduced because of wearing and tearing, make the packings sticis in the outer wall of neck bush and the inner wall of outer liner, and keep invariable sealed specific pressure, it is sealed effectual, effectively avoid the schizolysis gas to leak safe and reliable.

According to the utility model discloses rotary kiln pyrolysis oven's sealing device, include: the inner bushing is used for being connected with the rotary kiln in a sealing way; the outer bushing is sleeved on the periphery of the inner bushing, and a filling cavity arranged around the inner bushing is arranged between the outer bushing and the inner bushing; the sealing layer is arranged in the filling cavity and comprises sealing filling and sealing capsules which are respectively arranged around the inner bushing; and the conveyor is connected with the sealing capsule and introduces pressurized fluid into the sealing capsule so as to drive the sealing filler to abut against the outer wall of the inner lining and the inner wall of the outer lining through the sealing capsule.

The technical scheme at least has the following beneficial effects: the sealing layer between the inner lining and the outer lining is set to be in a form of combining sealing filler and the sealing capsule, pressurized fluid is introduced into the sealing capsule through a conveyor, the sealing capsule expands under the action of the pressurized fluid and fills the volume reduced by abrasion of the sealing filler, the sealing filler is enabled to be tightly attached to the outer wall of the inner lining and the inner wall of the outer lining, constant sealing specific pressure is kept, gaps between the sealing filler and the inner lining and between the sealing filler and the outer lining are avoided, the sealing effect between the inner lining and the outer lining is improved, namely the sealing effect between the rotary kiln and a material box is improved, the leakage of pyrolysis gas is avoided, and the safety is improved.

According to some embodiments of the invention, the pressurized fluid circulates between the sealed capsule and the conveyor.

According to some embodiments of the present invention, the lower end of the sealed capsule is provided with a fluid inlet, the upper end of the sealed capsule is provided with a fluid outlet, the output end of the conveyor is connected with the fluid inlet, the input end of the conveyor is connected with the fluid outlet.

According to some embodiments of the utility model, be connected with the governing valve between the output of sealed capsule and the input of conveyer for the regulation is followed sealed capsule flows the fluid's of area pressure flow.

According to some embodiments of the present invention, a pressure stabilizer is connected between the output of the conveyor and the input of the sealed capsule for controlling the flow of the pressurized fluid entering the sealed capsule.

According to some embodiments of the invention, a heat exchanger is provided between the output of the sealed capsule and the input of the conveyor, the pressurized fluid flowing out of the sealed capsule passing through the heat exchanger.

According to the utility model discloses a some embodiments, the one end of outer bush can be dismantled and be connected with the gland, the outer bush is equipped with the seal groove, the opening orientation of seal groove the neck bush with the gland, the inner wall of seal groove the gland with form between the outer wall of neck bush the packing chamber.

According to some embodiments of the utility model, the sealing filler butt in the seal groove with the cell wall that the gland is relative, sealed capsule is located the sealing filler orientation one side of gland.

According to the utility model discloses a some embodiments, the one end of outer liner cover is equipped with the ring flange, the ring flange is equipped with the elongated hole, the length direction in elongated hole sets up along vertical direction, the ring flange is connected with wears to locate the fastener in elongated hole, the ring flange passes through the fastener with the workbin is connected.

According to some embodiments of the utility model, the ring flange orientation one side of workbin is equipped with seal gasket, seal gasket is used for the butt the workbin.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a cross-sectional view of a sealing device in an embodiment of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a schematic illustration of FIG. 2 with the sealant layer removed;

FIG. 4 is an enlarged view of FIG. 1 at B;

FIG. 5 is an enlarged view of FIG. 1 at C;

fig. 6 is a cross-sectional view of an outer liner in an embodiment of the present invention.

Reference numerals are as follows:

an inner liner 100; a connection ring 110;

an outer liner 200; a gland 210; a seal groove 220; a flange plate 230; an elongated hole 231; a fastener 232; a sealing gasket 233; a first interface 240; a second interface 250; a packing cavity 260;

a sealing layer 300; a sealing packing 310; sealing the capsule 320;

a conveyor 400; an adjustment valve 410; a voltage regulator 420;

a heat exchanger 500;

a rotary kiln 600;

a discharge box 700.

Detailed Description

This section will describe in detail the embodiments of the present invention, the preferred embodiments of which are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can visually and vividly understand each technical feature and the whole technical solution of the present invention, but it cannot be understood as a limitation to the scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The kiln head and the feeding box and the kiln tail and the discharging box of the rotary kiln pyrolysis furnace are sealed, so that the cracking gas generated by cracking organic matters under a high-temperature working condition is prevented from leaking, and the safety is ensured. The diameter of the kiln tail is large, the concentricity and the roundness of the kiln tail cannot meet the design requirements easily in the manufacturing and mounting processes of the kiln tail, and the kiln tail has large abrasion on sealing materials; meanwhile, the temperature of the kiln tail is high, generally about 600 ℃, the sealing requirement is high, and the abrasion to the sealing material is aggravated. However, the common sealing materials have poor resilience, and once the sealing materials are worn, gaps appear, so that sealing failure is caused, cracked gas leakage is caused, and particularly, potential safety hazards exist at the tail of a kiln.

To this end, referring to fig. 1 to 6, an embodiment of the present invention provides a sealing device for a rotary kiln pyrolysis furnace, which is applied between a kiln tail and a discharge box 700, and comprises an inner liner 100, an outer liner 200, a sealing layer 300, and a conveyor 400. Of course, it will be appreciated that the sealing arrangement may also be applied between the kiln head and the feed box.

The sealing device will be described in detail below by taking as an example the sealing device applied between the kiln tail and the discharge box 700.

Referring to fig. 1, it can be understood that the rotary kiln 600 is transversely arranged, two sides of the bottom of the rotary kiln 600 are generally provided with supporting rollers (not shown in the figure) for supporting the rotary kiln 600, the rotary kiln 600 is connected with a motor, and the motor drives the rotary kiln 600 to rotate on the supporting rollers, so that the hazardous waste in the rotary kiln 600 is uniformly heated so as to be decomposed. The kiln tail end of the rotary kiln 600 extends into the discharge bin 700 from the feed inlet of the discharge bin 700 so that decomposition products (e.g., pyrolysis gas and residue) are output to the discharge bin 700 for collection and post-processing.

Referring to fig. 1, it can be understood that the inner liner 100 is a solid of revolution, the left end of the inner liner 100 is provided with a connecting ring 110 extending towards the inside of the inner liner 100, the inner liner 100 is sleeved on the outer periphery of the rotary kiln 600 and located at the kiln tail, the center line of the inner liner 100 coincides with the center line of the rotary kiln 600, and the connecting ring 110 is welded on the outer wall of the rotary kiln 600, so that the inner liner 100 is fixedly connected to the rotary kiln 600, and the inner liner 100 is hermetically connected to the outer wall of the rotary kiln 600.

Referring to fig. 1, 5 and 6, it can be understood that the outer liner 200 is also configured as a solid of revolution, the flange 230 is disposed at the left end of the outer liner 200, the outer liner 200 is connected to the feed inlet of the discharge box 700 through the flange 230, the flange 230 is bolted to the discharge box 700, an annular sealing gasket 233 is sandwiched between the flange 230 and the discharge box 700, the sealing gasket 233 is arranged around the feed inlet of the discharge box 700, and the sealing gasket 233 has certain resilience, so that the outer liner 200 is hermetically connected to the feed inlet of the discharge box 700, and the structure is simple; generally, the temperature of the outer liner 200 is low, the friction of the outer liner 200 against the sealing gasket 233 is small, the abrasion of the sealing gasket 233 is small, and the sealing gasket 233 can ensure good sealing performance between the outer liner 200 and the discharging box 700.

Referring to fig. 1, 2 and 3, it can be understood that the outer liner 200 is sleeved on the outer periphery of the inner liner 100, so as to convert the seal between the rotary kiln 600 and the discharge box 700 into the seal between the outer liner 200 and the inner liner 100, and when the rotary kiln 600 rotates, the inner liner 100 is driven to rotate, that is, the inner liner 100 rotates relative to the outer liner 200, so as to prevent the whole sealing device from twisting. Specifically, a packing chamber 260 is provided between the outer liner 200 and the inner liner 100 for filling the sealing layer 300, and the packing chamber 260 is disposed around the inner liner 100 to seal along the circumferential direction of the inner liner 100. The center line of the outer liner 200 coincides with the center line of the inner liner 100, and the packing chamber 260 has the same radial width at each position along the circumferential direction of the inner liner 100, so that the sealing layer 300 is uniformly packed, and the sealing property is improved.

Referring to fig. 2, it can be understood that the sealing layer 300 includes a sealing filler 310 and a sealing capsule 320, and both the sealing filler 310 and the sealing capsule 320 are filled in the filler cavity 260 and are arranged along the circumferential direction of the inner sleeve 100. The sealing filler 310 is made of nonmetal materials such as oil-immersed graphite packing and has certain resilience, the sealing filler 310 abuts against the outer wall of the inner bushing 100 and the inner wall of the outer bushing 200 at the same time so as to realize sealing between the inner bushing 100 and the outer bushing 200, and the sealing filler 310 and the inner bushing 100 are in dynamic sealing, so that sealing can be realized in the operation process of the rotary kiln 600; the sealing capsule 320 is configured to be a tubular structure such as a rubber tube or a silicone tube, and has good elasticity and toughness, and can bear sufficient pressure.

Referring to fig. 1, it can be understood that the conveyor 400 is connected to the sealed capsule 320 through a pipe and introduces a fluid under pressure into the sealed capsule 320, wherein the fluid under pressure may be a liquid such as water, heat transfer oil, etc., or the fluid under pressure may be compressed air. When the pressurized fluid is a liquid such as water or heat transfer oil, the transporter 400 is configured as a pump body, and when the pressurized fluid is compressed air, the transporter 400 is configured as an air compressor. Pressurized fluid is introduced into the sealing capsule 320 through the conveyor 400, under the action of the pressurized fluid, the sealing capsule 320 expands and fills the volume of the sealing filler 310 reduced due to abrasion, the sealing filler 310 is driven to be tightly pressed on the outer wall of the inner bushing 100 and the inner wall of the outer bushing 200, and constant sealing specific pressure is kept, so that good sealing performance is kept between the inner bushing 100 and the outer bushing 200. The specific sealing pressure is the pressure per unit area.

In the process of the rotary kiln 600 rotating operation, the inner bushing 100 is driven to rotate, the inner bushing 100 generates friction on the sealing filler 310, meanwhile, the temperature of the rotary kiln 600 is transmitted to the sealing filler 310 through the inner bushing 100, the sealing filler 310 is abraded under the action of friction and high temperature, in the process, the conveyor 400 introduces fluid under pressure into the sealing capsule 320, under the action of the fluid under pressure, the sealing capsule 320 expands and fills the volume of the sealing filler 310 reduced due to abrasion, the sealing filler 310 is made to cling to the outer wall of the inner bushing 100 and the inner wall of the outer bushing 200, constant sealing specific pressure is kept, gaps between the sealing filler 310 and the inner bushing 100 and between the sealing filler 310 and the outer bushing 200 are avoided, accordingly, the sealing effect between the inner bushing 100 and the outer bushing 200 is improved, namely the sealing effect between the rotary kiln 600 and a bin is improved, cracking gas leakage is avoided, and safety is improved. It will be appreciated that as the wear of the sealing compound 310 increases, the conveyor 400 increases the amount of pressurized fluid introduced into the sealing capsule 320 or decreases the amount of pressurized fluid discharged from the sealing capsule 320, and the sealing capsule 320 expands further to maintain a constant specific sealing pressure of the sealing compound 310, thereby maintaining a good seal between the inner and outer liners 100 and 200.

Referring to fig. 1, 2 and 6, it can be understood that the inner side of the outer liner 200 is provided with a sealing groove 220, the sealing groove 220 is arranged around the circumference of the inner liner 100, the opening of the sealing groove 220 faces the inner liner 100 and the right end of the outer liner 200, the right end of the outer liner 200 is detachably connected with a gland 210, for example, the gland 210 is fixedly connected with the outer liner 200 by screws, so that a packing cavity 260 is formed between the inner wall of the sealing groove 220, the gland 210 and the outer wall of the inner liner 100, the structure is simple, and the sealing packing 310 and the sealing capsule 320 are installed in the packing cavity 260. The sealing packing 310 and the sealing capsule 320 can be conveniently replaced by arranging the detachably coupled gland 210 at the right side of the packing chamber 260. Meanwhile, the gland 210 can compress the sealing filler 310, and the sealing filler 310 can keep constant sealing specific pressure by matching with the pressure action of the sealing capsule 320, so that a good sealing effect is ensured.

Referring to fig. 2, it can be understood that the sealing packing 310 abuts against a groove wall of the sealing groove 220 opposite to the gland 210, so that the sealing packing 310 and the outer liner 200 are tightly attached to each other, and the sealing performance is ensured. Furthermore, the sealing compound 310 abuts against the outer wall of the inner sleeve 100, and the sealing capsule 320 is located on the side of the sealing compound 310 facing away from the inner sleeve 100, so that the sealing capsule 320 is connected to the conveyor 400, and at the same time, the sealing capsule 320 is also located on the side of the sealing compound 310 facing the gland 210. During the installation, install sealing filler 310 to the packing chamber 260 earlier to make sealing filler 310 butt in the outer wall of neck bush 100 and the cell wall of seal groove 220, in order to guarantee the leakproofness, toward the sealed capsule 320 of packing chamber 260 installation again, simple to operate, and under the pressure effect of sealed capsule 320, can make sealing filler 310 keep invariable sealed specific pressure, guarantee good sealed effect.

Referring to fig. 1, 2, 4 and 6, it can be understood that the pressurized fluid is provided as a liquid having good thermal conductivity such as water, thermal conductive oil, etc., and the pressurized fluid circulates between the sealed capsule 320 and the conveyor 400. In particular, the sealed capsule 320 is provided with a fluid inlet and a fluid outlet, and correspondingly, the outer liner 200 is provided with a first port 240 connected with the fluid inlet and a second port 250 connected with the fluid outlet. The conveyer 400 is configured as a circulating pump, the output end of the conveyer 400 is connected with the first interface 240 through a pipeline, the input end of the conveyer 400 is also connected with the second interface 250 through a pipeline, the pipeline is in threaded connection with the first interface 240 and the pipeline is in threaded connection with the second interface 250, the connection is stable, the installation and the overhaul or the replacement are convenient, the sealing performance is good, and the leakage of the pressurized fluid is avoided. The conveyor 400 introduces the pressurized fluid into the sealed capsule 320 through the first connector 240 and the fluid inlet at a certain pressure, the pressurized fluid flows out of the sealed capsule 320 through the fluid outlet and the second connector 250 and flows back to the conveyor 400, and the circulation is performed in such a way that the pressurized fluid circulates between the sealed capsule 320 and the conveyor 400. Generally speaking, the pipeline is placed outside the pyrolysis furnace, the circulating fluid under pressure exchanges heat with the sealing filler 310 and the sealing capsule 320 in the sealing capsule 320 to take away the heat of the sealing filler 310 and the sealing capsule 320, and the heat is dissipated to the outside in the pipeline, so that the temperature of the sealing filler 310 can be reduced, the wear rate of the sealing filler 310 is slowed down, the service life of the sealing filler 310 is prolonged, meanwhile, the temperature of the sealing capsule 320 is reduced, the risk that the sealing capsule 320 is damaged due to overhigh service temperature is reduced, the service life of the sealing capsule 320 is prolonged, the stability and reliability of the whole sealing device are improved, and the service life is prolonged.

Referring to fig. 1, 2 and 4, it can be understood that the fluid inlet is disposed at the lower end of the sealing capsule 320, correspondingly, the first interface 240 is disposed at the lower side of the outer liner 200, the fluid outlet is disposed at the upper end of the sealing capsule 320, correspondingly, the second interface 250 is disposed at the upper side of the outer liner 200, so that the pressurized fluid flows upward in the sealing capsule 320, the pressurized fluid is prevented from rapidly leaving the sealing capsule 320 under the action of gravity, and the pressurized fluid, the sealing capsule 320 and the sealing filler 310 perform sufficient heat exchange, thereby improving the heat exchange efficiency, and effectively reducing the temperatures of the sealing filler 310 and the sealing capsule 320.

Referring to fig. 1, it can be appreciated that a regulating valve 410 is connected to the conduit between the fluid outlet and the input of the transporter 400. The flow rate of the pressurized fluid from the sealed capsule 320 may be adjusted by the regulating valve 410 to adjust the degree of expansion of the sealed capsule 320 and stabilize the pressure of the sealed capsule 320. For example, when the abrasion of the packing 310 is large, the flow rate of the pressurized fluid flowing out of the sealing bladder 320 is reduced by the control valve 410, so that the expansion degree of the sealing bladder 320 is increased to fill the volume reduced by the abrasion of the packing 310, and the pressure of the sealing bladder 320 is kept stable, so that the packing 310 is tightly attached to the outer wall of the inner liner 100 and the inner wall of the outer liner 200, and a constant specific sealing pressure is maintained, thereby maintaining good sealing performance.

Referring to fig. 1, it will be appreciated that a regulator 420, such as a pressure maintaining valve, is connected to the conduit between the fluid inlet and the output of the transporter 400. The flow rate of the pressurized fluid entering the sealed capsule 320 can be controlled by the pressure stabilizer 420, so that the phenomenon that the pressure in the sealed capsule 320 is too high due to the fact that the flow rate of the pressurized fluid entering the sealed capsule 320 is too high, and the sealed capsule 320 is broken and damaged due to the fact that the pressure in the sealed capsule 320 is kept stable is avoided, and the reliability of the sealed capsule 320 is improved.

Referring to fig. 1, it can be understood that the pressure in the sealing bladder 320 can be kept stable by adjusting the flow rate of the pressurized fluid through the cooperation of the adjusting valve 410 and the pressure maintaining valve, so that the sealing bladder 320 can drive the sealing filler 310 to be tightly attached to the outer wall of the inner liner 100 and the inner wall of the outer liner 200, and a constant specific sealing pressure is kept, so as to keep good sealing performance, and further improve the stability and reliability of the sealing.

Referring to fig. 1, it will be appreciated that the conduit between the fluid outlet and the input end of the transporter 400 is provided with a heat exchanger 500, and the heat exchanger 500 may be a radiator, a cooler, or the like, so that the pressurized fluid flowing out of the sealed capsule 320 passes through the heat exchanger 500 and then flows back to the transporter 400. In the heat exchanger 500, the rate of heat exchange between the pressurized fluid and the air outside the pyrolysis furnace can be increased, so that the temperature of the pressurized fluid is rapidly reduced, the efficiency of heat exchange between the pressurized fluid and the sealing capsule 320 and the sealing filler 310 is further improved, and the temperatures of the sealing filler 310 and the sealing capsule 320 are effectively reduced. In the process of heat exchange of the heat exchanger 500, only the heat transfer process and the mass transfer process are performed, and the fluid with pressure is not lost, so that the purposes of energy conservation and consumption reduction are achieved.

It can be understood that, during the operation of the rotary kiln 600, at a high temperature of 600 ℃, the rotary kiln 600 is heated to expand, the diameter of the rotary kiln 600 increases, and as the rotary kiln 600 rotates on the supporting roller, the center line of the rotary kiln 600 moves upwards, and the center line of the inner bushing 100 moves upwards along with the rotary kiln 600, so that the inner bushing 100 and the outer bushing 200 are not coaxial, an eccentric wheel effect is generated, and the abrasion of the sealing filler 310 is increased.

For this, referring to fig. 1, 5 and 6, it can be understood that the flange 230 is provided with an elongated hole 231, the length direction of the elongated hole 231 is arranged in a vertical direction, the flange 230 is connected with the discharging box 700 through a fastener 232, the fastener 232 may be a bolt, and the fastener 232 is inserted through the elongated hole 231. It is easy to understand that, because the sealing gasket 233 has a certain resilience, and the temperature of the discharging box 700 is low, the pretightening force of the fastening member 232 can be set to be in a small state within the deformation range of the sealing gasket 233, and the sealing performance between the outer liner 200 and the discharging box 700 is not affected. With the design of the elongated hole 231 with a small pre-tightening force of the fastening member 232, the outer liner 200 can move in the vertical direction relative to the discharging box 700 without rotating relative thereto. Therefore, when the rotary kiln 600 is heated to expand and the center lines of the rotary kiln 600 and the inner bushing 100 move upwards, the center line of the outer bushing 200 can move upwards along with the inner bushing 100, so that the inner bushing 100 and the outer bushing 200 maintain a certain coaxiality, an eccentric wheel effect is avoided, abrasion of the sealing filler 310 caused by the heating expansion of the rotary kiln 600 is eliminated, the abrasion rate of the sealing filler 310 can be reduced, and the service life of the sealing filler 310 is effectively prolonged. Meanwhile, the rotation of the inner bushing 100 relative to the outer bushing 200 is not affected, so that a dynamic seal is formed, and a good sealing effect is ensured.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. A sealing device of a rotary kiln pyrolysis furnace is characterized by comprising:

the inner bushing is used for being connected with the rotary kiln in a sealing way;

the outer bushing is sleeved on the periphery of the inner bushing, and a filling cavity arranged around the inner bushing is arranged between the outer bushing and the inner bushing;

a sealing layer arranged in the filling cavity, wherein the sealing layer comprises sealing filling and sealing capsules which are respectively arranged around the inner lining;

and the conveyor is connected with the sealing capsule and feeds pressurized fluid into the sealing capsule so as to drive the sealing filler to abut against the outer wall of the inner lining and the inner wall of the outer lining through the sealing capsule.

2. The sealing device of the rotary kiln pyrolysis furnace as claimed in claim 1, wherein: the fluid under pressure circulates between the sealed capsule and the conveyor.

3. The sealing device of the rotary kiln pyrolysis furnace as claimed in claim 2, wherein: the lower end of the sealed capsule is provided with a fluid inlet, the upper end of the sealed capsule is provided with a fluid outlet, the output end of the conveyor is connected with the fluid inlet, and the input end of the conveyor is connected with the fluid outlet.

4. The sealing device of the rotary kiln pyrolysis furnace as claimed in claim 2 or 3, wherein: and a regulating valve is connected between the output end of the sealed capsule and the input end of the conveyor and is used for regulating the flow of the pressurized fluid flowing out of the sealed capsule.

5. The sealing device of the rotary kiln pyrolysis furnace as claimed in claim 4, wherein: and a pressure stabilizer is connected between the output end of the conveyor and the input end of the sealed capsule and used for controlling the flow of the pressurized fluid entering the sealed capsule.

6. The sealing device of the rotary kiln pyrolysis furnace as claimed in claim 2 or 3, wherein: a heat exchanger is arranged between the output end of the sealed capsule and the input end of the conveyor, and the pressurized fluid flowing out of the sealed capsule passes through the heat exchanger.

7. The sealing device of the rotary kiln pyrolysis furnace as claimed in claim 1, wherein: the one end of outer liner can be dismantled and be connected with the gland, the outer liner is equipped with the seal groove, the opening orientation of seal groove the neck bush with the gland, the inner wall of seal groove the gland with form between the outer wall of neck bush the packing chamber.

8. The sealing device for the pyrolysis furnace of the rotary kiln as recited in claim 7, wherein: the sealing filler butt in the seal groove with the cell wall that the gland is relative, sealed capsule is located the sealing filler orientation one side of gland.

9. The sealing device of the rotary kiln pyrolysis furnace as claimed in claim 1, wherein: the one end of outer liner is equipped with the ring flange, the ring flange is equipped with elongated hole, the length direction in elongated hole sets up along vertical direction, the ring flange is connected with wears to locate the fastener in elongated hole, the ring flange passes through the fastener with the workbin is connected.

10. The sealing device for the pyrolysis furnace of the rotary kiln as recited in claim 9, wherein: one side of the flange plate facing the material box is provided with a sealing gasket which is used for being abutted to the material box.

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