Leakage-proof pyrolysis high-temperature solid material conveying device

Abstract

The present application relates to a kind of pyrolysis high-temperature solid material conveying device of leakage prevention, belong to high-temperature solid material conveying technical field;Shell is placed axially horizontally on support platform;The top of shell is provided with import flange, bottom is provided with export flange;Double-chamber leakage prevention seal is installed in the axial left end of shell;Shaft passes through double-chamber leakage prevention seal and then from the left end of shell extends into the inner cavity of shell;2 bearing seats are fixed on the upper surface of support platform by bolt connection;The axial outer end of shaft is supported by 2 bearing seats;Rotary joint is installed in the outer end of shaft;Access hole is arranged in the top of shell;Access hole inner wall, import flange inner wall, export flange inner wall, shell inner wall are attached wear-resistant castable;The outer wall of the part of shaft extending into the inner cavity of shell is installed blade;Transmission part is sleeved on the outer wall of the outer end of shaft;The present application can withstand high-temperature working condition when conveying garbage pyrolysis solid material, while long-distance material return in horizontal direction is realized, and the problem of garbage pyrolysis material return is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of high-temperature solid material conveying, and relates to a leakage-proof pyrolysis high-temperature solid material conveying device. BACKGROUND

[0002] With the development of garbage disposal, garbage pyrolysis technology has been developed, in which the garbage pyrolysis technology is to heat a solid heat carrier by a circulating fluidized bed, and then pyrolyze the garbage by the solid heat carrier. The high-temperature solid material after pyrolysis is a mixture of the heat carrier, residual carbon, dust and block-shaped inorganic matter, etc. The block-shaped inorganic matter includes metals, bricks and tiles, etc. The high-temperature solid material needs to enter the furnace for heating and incineration through a return feeder, and then the solid heat carrier circulation is completed.

[0003] In a general circulating fluidized bed boiler system, a non-mechanical valve such as an L valve, a J valve, etc. is usually used to push the solid particles by gas only, and a mechanical valve such as a butterfly valve, a gate valve, etc. is used in a small amount to control the solid particles by valve action. However, for the garbage pyrolysis device, the composition after garbage pyrolysis is complex, and part of the high-temperature pyrolysis gas will enter the return material together with the pyrolysis residual carbon. Problems will occur in the return process: the non-mechanical valve usually has a sealing leakage problem; the dust in the high-temperature solid material will enter the gap of the rotating shaft, causing the sealing failure of the shaft.

[0004] In addition, if the existing high-temperature rotary valve is used, although the valve material is selected to be heat-resistant stainless steel, the center shaft is water-cooled, and a high-temperature bearing is selected, the high-temperature working condition can be withstood. However, when conveying the garbage pyrolysis solid material, the following problems still exist:

[0005] The space return material space distance of the high-temperature rotary valve is limited, the distance from the inlet to the outlet is limited, the horizontal long-distance return material cannot be realized, and the use requirement cannot be met. SUMMARY

[0006] The technical problem solved by the present application is to overcome the shortcomings of the prior art, and to provide a leakage-proof pyrolysis high-temperature solid material conveying device, which can withstand high-temperature working conditions when conveying garbage pyrolysis solid material, and can realize horizontal long-distance return material, thereby solving the problem of garbage pyrolysis return material.

[0007] The technical solution of the present application is:

[0008] A leakage-proof pyrolysis high-temperature solid material conveying device, comprising a rotary joint, two bearing seats, a double-chamber leakage-proof seal, an inlet flange, a shell, an inspection opening, a shaft, wear-resistant castable, a blade, a support platform, an outlet flange and a transmission part.

[0009] The support platform is horizontally placed; the shell is axially horizontally placed on the support platform; the top of the shell is provided with an inlet flange; the bottom of the shell is provided with an outlet flange; the inlet flange and the outlet flange are in communication with the inner cavity of the shell; a double-chamber anti-leakage seal is installed at the axial left end of the shell; the shaft penetrates the double-chamber anti-leakage seal and extends into the inner cavity of the shell from the left end of the shell; two bearing seats are fixed on the upper surface of the support platform through bolts; the axial outer end of the shaft is supported by the two bearing seats; a rotary joint is installed at the outer end of the shaft; an access hole is arranged at the top of the shell; the inner walls of the access hole, the inlet flange, the outlet flange and the shell are attached with wear-resistant castable; the outer wall of the part of the shaft extending into the inner cavity of the shell is installed with blades; and a transmission part is sleeved on the outer wall of the outer end of the shaft.

[0010] In the anti-leakage pyrolysis high-temperature solid material conveying device, the support platform supports the shell, and the outlet flange is higher than the bottom of the support platform.

[0011] In the anti-leakage pyrolysis high-temperature solid material conveying device, the shaft is supported by the two bearing seats, and the part of the shaft extending into the inner cavity of the shell is suspended.

[0012] In the anti-leakage pyrolysis high-temperature solid material conveying device, the transmission part is located between the rotary joint and the bearing seat; the transmission part is fixed on the shaft in a tensioning mode; and the transmission part provides a rotary power source for the shaft.

[0013] In the anti-leakage pyrolysis high-temperature solid material conveying device, the wear-resistant castable is provided in a high-temperature wear-resistant double-layer castable mode; the wear-resistant castable comprises a wear-resistant layer and a heat preservation layer; the heat preservation layer is attached to the inner walls of the access hole, the inlet flange, the outlet flange and the shell; and the wear-resistant layer is attached to the inner wall of the heat preservation layer.

[0014] In the anti-leakage pyrolysis high-temperature solid material conveying device, the wear-resistant layer is made of 90mm corundum mullite castable, the wear resistance is ≤7.0cc, and the thermal conductivity at 600℃ is ≤1.6W / m·K; and the heat preservation layer is made of 150mm lightweight castable, and the thermal conductivity at 600℃ is ≤0.25W / m·K.

[0015] In the anti-leakage pyrolysis high-temperature solid material conveying device, the spacing of the blades gradually changes along the axial direction of the shaft, and gradually increases from the end close to the double-chamber anti-leakage seal to the end away from the double-chamber anti-leakage seal.

[0016] In the anti-leakage pyrolysis high-temperature solid material conveying device, the working process of the solid material conveying device is as follows:

[0017] The external high-temperature solid material enters the inner cavity of the shell from the inlet flange; the transmission part drives the shaft to rotate, and drives the blade to rotate; due to the small pitch of the blade below the inlet flange, the conveying speed is low; in the conveying process, the external high-temperature solid material is first filled into the space below the inlet flange; during the advancement of the external high-temperature solid material along the axial direction, the pitch of the blade on the shaft increases, the conveying speed increases, and the filling rate decreases; after the external high-temperature solid material is conveyed to the position of the outlet flange, it falls into the next device under the action of gravity; the double-chamber leak-proof seal prevents leakage of the external high-temperature solid material and the high-temperature gas accompanying the external high-temperature solid material; the wear-resistant castable is used to prevent wear of the external high-temperature solid material, prevent heat loss, and reduce the temperature drop of the external high-temperature solid material in the inner cavity of the shell.

[0018] In the above-mentioned anti-leakage pyrolysis high-temperature solid material conveying device, the double-chamber leak-proof seal comprises a first set of sealing devices and a second set of sealing devices; the first set of sealing devices, the second set of sealing devices and the shell are coaxially butted in sequence.

[0019] In the above-mentioned anti-leakage pyrolysis high-temperature solid material conveying device, the second set of sealing devices comprises a second gas connection pipe, a second pressing piece, a second sealing chamber, a second packing group, a second bolt and a second sealing cavity;

[0020] The second sealing cavity is arranged axially and horizontally; the second sealing chamber is arranged in the inner cavity of the second sealing cavity, and the second sealing chamber is butted with the axial end of the shell; the second packing group is arranged between the second sealing chamber and the shaft; the second pressing piece is sleeved on the outer wall of the shaft, and the second packing group is compressed by the second pressing piece; after compression, the second pressing piece is fixed by the circumferentially distributed second bolts; the second gas connection pipe is vertically arranged on the top of the second sealing cavity.

[0021] The first set of sealing devices comprises a first bolt, a first pressing piece, a first sealing cavity, a first gas connection pipe, a first sealing chamber, a first packing group and a skeleton oil seal.

[0022] The first sealing cavity is arranged axially and horizontally; the first sealing cavity is coaxially butted with the second sealing cavity; the first sealing chamber is arranged in the inner cavity of the first sealing cavity, and the first sealing chamber is butted with the axial end of the second sealing cavity; the first packing group is arranged between the first sealing chamber and the shaft; the first pressing piece is sleeved on the outer wall of the shaft, and the first packing group is compressed by the first pressing piece; after compression, the first pressing piece is fixed by the circumferentially distributed first bolts; the first gas connection pipe is vertically arranged on the top of the first sealing cavity; the skeleton oil seal is arranged at the butting position of the first sealing chamber and the second sealing cavity, and a sealing is increased.

[0023] The beneficial effects of the present application compared with the prior art are:

[0024] (1) The present application adopts cantilever shaft variable pitch structure, the pitch of the conveying equipment can be determined according to production needs, under the condition of constant speed, generally speaking, the smaller the pitch, the lower the efficiency, the slower the conveying speed. Small pitch is adopted at the inlet to control the feeding speed, and large pitch is adopted elsewhere to improve the conveying speed. At the inlet, due to the small pitch, the conveying speed is low under the same speed, the inlet is 100% filling rate, the small pitch can effectively control the amount of material entering the equipment, and the large pitch can improve the conveying efficiency and reduce the filling rate. At the same time, the cantilever structure is adopted, and only the left end is installed with a support structure, which can effectively prevent the band-shaped material from winding on the screw;

[0025] (2) The present application adopts double-chamber leak-proof sealing structure, which is divided into left and right double-chamber sealing, double-chamber series connection, forming two seals, in each sealing chamber, packing seal is adopted, and skeleton oil seal is added in the middle of the two seals to form intermediate sealing, even if all the above seals fail, the two chambers can be sealed with gas respectively, effectively improving the sealing performance of the device;

[0026] (3) The present application lays high-temperature wear-resistant castable in the shell, which significantly enhances the wear resistance of the equipment. High-temperature wear-resistant double-layer castable layout is adopted, the layer in contact with the material is wear-resistant layer, and the other layer is heat preservation layer. At 600 DEG C, the thermal conductivity of the heat preservation layer material is not greater than 1.5 W / m·K, and the wear resistance of the wear-resistant layer is not greater than 15 cc. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a whole schematic view of the high-temperature solid material conveying device of the present application.

[0028] Figure 2 It is a schematic view of the double-chamber leak-proof sealing structure of the present application. DETAILED DESCRIPTION

[0029] The present application will be further described below in combination with examples.

[0030] The present application provides a leak-proof pyrolysis high-temperature solid material conveying device, which can withstand high-temperature working condition during conveying of garbage pyrolysis solid material, and can realize horizontal long-distance return of material, solving the problem of garbage pyrolysis return.

[0031] The leak-proof pyrolysis high-temperature solid material conveying device comprises a shell, a screw shaft, a supporting structure and a driving device. Figure 1As shown, specifically includes swivel joint 1, 2 bearing seat 2, double chamber leakproof seal 3, inlet flange 4, shell 5, access hole 6, shaft 7, wear-resistant castable 8, blade 9, support platform 10, outlet flange 11, transmission part 12. Among them, the support platform 10 is horizontally placed; the shell 5 is axially horizontally placed on the support platform 10; the top of the shell 5 is provided with the inlet flange 4; the bottom of the shell 5 is provided with the outlet flange 11; the inlet flange 4 and the outlet flange 11 are both communicated with the inner cavity of the shell 5; the double chamber leakproof seal 3 is installed at the axial left end of the shell 5; the shaft 7 penetrates through the double chamber leakproof seal 3 and then extends into the inner cavity of the shell 5 from the left end of the shell 5; the two bearing seats 2 are fixed on the upper surface of the support platform 10 by bolts; the axial outer end of the shaft 7 is supported by the two bearing seats 2; the swivel joint 1 is installed at the outer end of the shaft 7; the access hole 6 is provided at the top of the shell 5; the inner wall of the access hole 6, the inner wall of the inlet flange 4, the inner wall of the outlet flange 11 and the inner wall of the shell 5 are all attached with the wear-resistant castable 8; the outer wall of the part of the shaft 7 extending into the inner cavity of the shell 5 is installed with the blade 9; the transmission part 12 is sleeved on the outer wall of the outer end of the shaft 7.

[0032] The support platform 10 supports the shell 5, and the outlet flange 11 is higher than the bottom of the support platform 10. The shaft 7 is suspended in the part of the inner cavity of the shell 5 by being supported by the two bearing seats 2.

[0033] The transmission part 12 is located between the swivel joint 1 and the bearing seat 2; the transmission part 12 is fixed on the shaft 7 in a tensioning manner; the transmission part 12 provides a rotating power source for the shaft 7.

[0034] The wear-resistant castable 8 is provided with high-temperature wear-resistant double-layer castable; including wear-resistant layer and heat preservation layer; the heat preservation layer is attached to the inner wall of the access hole 6, the inner wall of the inlet flange 4, the inner wall of the outlet flange 11 and the inner wall of the shell 5; the wear-resistant layer is attached to the inner wall of the heat preservation layer. The wear-resistant layer is made of 90mm corundum mullite castable, the wear resistance is ≤7.0cc, and the thermal conductivity at 600℃ is ≤1.6W / m·K; the heat preservation layer is made of 150mm lightweight castable, and the thermal conductivity at 600℃ is ≤0.25W / m·K.

[0035] The spacing of the blades 9 gradually changes along the axial direction of the shaft 7, and gradually increases from the end close to the double chamber leakproof seal 3 to the end away from the double chamber leakproof seal 3.

[0036] The working process of the solid material conveying device is as follows:

[0037] The high-temperature solid material from the inlet flange 4 enters the inner cavity of the shell 5; the transmission part 12 drives the shaft 7 to rotate, and drives the blade 9 to rotate; due to the small pitch of the blade 9 below the inlet flange 4, the conveying speed is low; during the conveying process, the high-temperature solid material fills the space below the inlet flange 4 first; during the axial advancement of the high-temperature solid material, the pitch of the blade 9 on the shaft 7 increases, the conveying speed increases, and the filling rate decreases; after the high-temperature solid material is conveyed to the position of the outlet flange 11, it falls into the next device under the action of gravity; the double-chamber leak-proof seal 3 prevents the leakage of the high-temperature solid material and the high-temperature gas accompanying the high-temperature solid material; the wear-resistant castable 8 realizes the wear resistance of the high-temperature solid material, prevents heat loss, and reduces the temperature drop of the high-temperature solid material in the inner cavity of the shell 5.

[0038] The double-chamber leak-proof seal 3 includes a first set of sealing devices 3-a and a second set of sealing devices 3-b; the first set of sealing devices 3-a, the second set of sealing devices 3-b, and the shell 5 are coaxially connected in sequence.

[0039] As shown in Figure 2 , the second set of sealing devices 3-b includes a second gas connection pipe 3-7, a second pressing piece 3-8, a second sealing chamber 3-9, a second packing group 3-10, a second bolt 3-11, and a second sealing cavity 3-12. The second sealing cavity 3-12 is axially and horizontally arranged; the second sealing chamber 3-9 is arranged in the inner cavity of the second sealing cavity 3-12, and the second sealing chamber 3-9 is coaxially connected with the axial end of the shell 5; the second packing group 3-10 is arranged between the second sealing chamber 3-9 and the shaft 7; the second pressing piece 3-8 is sleeved on the outer wall of the shaft 7, and the second packing group 3-10 is compressed by the second pressing piece 3-8; after compression, the second pressing piece 3-8 is fixed by the circumferentially distributed second bolt 3-11; the second gas connection pipe 3-7 is vertically arranged at the top of the second sealing cavity 3-12.

[0040] The first set of sealing devices 3-a includes a first bolt 3-1, a first pressing piece 3-2, a first sealing cavity 3-3, a first gas connection pipe 3-4, a first sealing chamber 3-5, a first packing group 3-6, and a skeleton oil seal 3-13. The first sealing cavity 3-3 is axially and horizontally arranged; the first sealing cavity 3-3 is coaxially connected with the second sealing cavity 3-12; the first sealing chamber 3-5 is arranged in the inner cavity of the first sealing cavity 3-3, and the first sealing chamber 3-5 is coaxially connected with the axial end of the second sealing cavity 3-12; the first packing group 3-6 is arranged between the first sealing chamber 3-5 and the shaft 7; the first pressing piece 3-2 is sleeved on the outer wall of the shaft 7, and the first packing group 3-6 is compressed by the first pressing piece 3-2; after compression, the first pressing piece 3-2 is fixed by the circumferentially distributed first bolt 3-1; the first gas connection pipe 3-4 is vertically arranged at the top of the first sealing cavity 3-3; the skeleton oil seal 3-13 is arranged at the joint of the first sealing chamber 3-5 and the second sealing cavity 3-12, and an additional sealing is provided.

[0041] The present application adopts cantilever shaft variable pitch structure, the pitch of conveying equipment can be determined according to production needs, under the condition of certain rotating speed, generally speaking, the smaller the pitch, the lower the efficiency, the slower the conveying speed.Inlet adopts small pitch, controls the feeding speed, other places adopt large pitch, improves the conveying speed.Inlet due to small pitch, under the same rotating speed, the conveying speed is low, the inlet is 100% filling rate, small pitch can effectively control the material amount entering the equipment, other places adopt large pitch, can improve the conveying efficiency, reduce the filling rate.At the same time, adopt cantilever structure, only install support structure at the left end, this structure can effectively prevent the winding of strip material on the screw.

[0042] The present application adopts double-chamber leak-proof sealing structure, which is divided into left and right double-chamber sealing, double-chamber series connection, forms two seals, in each sealing chamber, adopts packing seal, and increases skeleton oil seal in the middle of two seals, forms intermediate seal, even if all the above seals fail, can use the gas sealing of two chambers respectively, effectively improves the sealing performance of the device.

[0043] The present application lays high temperature wear-resistant castable in the inside of the shell, significantly enhances the wear resistance of the equipment. High temperature wear-resistant adopts double-layer castable layout, the layer in contact with the material is wear-resistant layer, the other layer is heat preservation layer. At 600 DEG C, the thermal conductivity of the heat preservation layer material is not greater than 1.5 W / m·K, and the wear resistance of the wear-resistant layer is not greater than 15 cc.

[0044] Although the present application has been disclosed as above with preferred embodiments, it is not intended to limit the present application, any person skilled in the art can make possible changes and modifications to the technical solutions of the present application by using the disclosed methods and technical contents without departing from the spirit and scope of the present application, therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, which does not deviate from the technical solutions of the present application, belongs to the protection scope of the present application technical solutions.

Claims

1. A leak-proof pyrolysis high-temperature solid material conveying device, characterized in that: Includes a rotary joint (1), two bearing seats (2), a double-chamber leak-proof seal (3), an inlet flange (4), a housing (5), an inspection port (6), a shaft (7), wear-resistant castable (8), blades (9), a support platform (10), an outlet flange (11), and a transmission part (12); Among them, the support platform (10) is placed horizontally; the shell (5) is placed horizontally on the support platform (10) axially; the top of the shell (5) is provided with an inlet flange (4); the bottom of the shell (5) is provided with an outlet flange (11); both the inlet flange (4) and the outlet flange (11) are connected to the inner cavity of the shell (5); the double-chamber leak-proof seal (3) is installed on the left axial end of the shell (5); the shaft (7) passes through the double-chamber leak-proof seal (3) and extends into the inner cavity of the shell (5) from the left end of the shell (5); the two bearing seats (2) are connected to the inner cavity of the shell (5). The shaft (7) is fixed to the upper surface of the support platform (10) by bolt connection; the axial outer end of the shaft (7) is supported by two bearing seats (2); the rotary joint (1) is installed at the outer end of the shaft (7); the inspection port (6) is set at the top of the housing (5); the inner wall of the inspection port (6), the inner wall of the inlet flange (4), the inner wall of the outlet flange (11), and the inner wall of the housing (5) are all covered with wear-resistant castable (8); blades (9) are installed on the outer wall of the part of the shaft (7) that extends into the inner cavity of the housing (5); the transmission part (12) is fitted on the outer wall of the outer end of the shaft (7); The double-chamber leak-proof seal (3) includes a first sealing device (3-a) and a second sealing device (3-b); the first sealing device (3-a), the second sealing device (3-b), and the housing (5) are coaxially connected in sequence; The second sealing device (3-b) includes a second air inlet pipe (3-7), a second pressure member (3-8), a second sealing chamber (3-9), a second packing assembly (3-10), a second bolt (3-11), and a second sealing cavity (3-12); The second sealing cavity (3-12) is axially horizontally arranged; the second sealing chamber (3-9) is arranged in the inner cavity of the second sealing cavity (3-12), and the second sealing chamber (3-9) is connected to the shaft end of the housing (5); the second packing assembly (3-10) is installed between the second sealing chamber (3-9) and the shaft (7); the second pressing member (3-8) is fitted on the outer wall of the shaft (7), and the second packing assembly (3-10) is compressed by the second pressing member (3-8); after compression, the second pressing member (3-8) is fixed by the circumferentially distributed second bolts (3-11); the second air inlet pipe (3-7) is vertically arranged at the top of the second sealing cavity (3-12); The first sealing device (3-a) includes a first bolt (3-1), a first pressure member (3-2), a first sealing cavity (3-3), a first air inlet pipe (3-4), a first sealing chamber (3-5), a first packing assembly (3-6), and a skeleton oil seal (3-13); The first sealing cavity (3-3) is axially horizontally arranged; the first sealing cavity (3-3) and the second sealing cavity (3-12) are coaxially connected; the first sealing chamber (3-5) is arranged in the inner cavity of the first sealing cavity (3-3), and the first sealing chamber (3-5) is connected to the shaft end of the second sealing cavity (3-12); the first packing assembly (3-6) is installed between the first sealing chamber (3-5) and the shaft (7); the first pressing member (3-2) is fitted on the outer wall of the shaft (7), and the first packing assembly (3-6) is compressed by the first pressing member (3-2); after compression, the first pressing member (3-2) is fixed by the circumferentially distributed first bolts (3-1); the first air inlet pipe (3-4) is vertically arranged at the top of the first sealing cavity (3-3); the skeleton oil seal (3-13) is arranged at the joint between the first sealing chamber (3-5) and the second sealing cavity (3-12) to add a seal.

2. The leak-proof pyrolysis high-temperature solid material conveying device according to claim 1, characterized in that: The support platform (10) provides support for the shell (5), and the outlet flange (11) is higher than the bottom of the support platform (10).

3. The leak-proof pyrolysis high-temperature solid material conveying device according to claim 1, characterized in that: Supported by two bearing seats (2), the shaft (7) is suspended in the cavity of the housing (5).

4. The leak-proof pyrolysis high-temperature solid material conveying device according to claim 1, characterized in that: The transmission part (12) is located between the rotary joint (1) and the bearing seat (2); the transmission part (12) is fixed on the shaft (7) by a tensioning method; the transmission part (12) provides a rotational power source for the shaft (7).

5. The leak-proof pyrolysis high-temperature solid material conveying device according to claim 1, characterized in that: The wear-resistant castable (8) is made of high-temperature wear-resistant double-layer castable; including a wear-resistant layer and a heat insulation layer; the heat insulation layer is attached to the inner wall of the inspection port (6), the inner wall of the inlet flange (4) and the inner wall of the outlet flange (11), and the inner wall of the shell (5); the wear-resistant layer is attached to the inner wall of the heat insulation layer.

6. The leak-proof pyrolysis high-temperature solid material conveying device according to claim 5, characterized in that: The wear-resistant layer is made of 90mm corundum mullite castable with a wear resistance of ≤7.0cc and a thermal conductivity of ≤1.6W / m·K at 600℃; the insulation layer is made of 150mm lightweight castable with a thermal conductivity of ≤0.25W / m·K at 600℃.

7. The leak-proof pyrolysis high-temperature solid material conveying device according to claim 5, characterized in that: The spacing of the blades (9) gradually changes along the axial direction of the shaft (7), and the spacing of the blades (9) gradually increases from the end closer to the double-chamber leak-proof seal (3) to the end farther away from the double-chamber leak-proof seal (3).

8. The leak-proof pyrolysis high-temperature solid material conveying device according to claim 7, characterized in that: The working process of the solid material conveying device is as follows: External high-temperature solid material enters the inner cavity of the shell (5) through the inlet flange (4); the transmission part (12) drives the shaft (7) to rotate, which in turn drives the blades (9) to rotate; due to the small pitch of the blades (9) below the inlet flange (4), the conveying speed is low; during the conveying process, the external high-temperature solid material first fills the space below the inlet flange (4); as the external high-temperature solid material moves along the axial direction, the pitch of the blades (9) on the shaft (7) increases, the conveying speed increases, and the filling rate decreases; after the external high-temperature solid material is conveyed to the outlet flange (11), it falls into the next equipment under the action of gravity; the external high-temperature solid material and the external high-temperature solid material accompanied by high-temperature gas are prevented from leaking through the double-chamber leak-proof seal (3); the external high-temperature solid material is protected from wear by the wear-resistant castable (8), while preventing heat loss and reducing the cooling of the external high-temperature solid material in the inner cavity of the shell (5).

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