Collecting and filtering device for tail gas end in double-temperature-zone high-temperature tube furnace

Abstract

The utility model relates to the technical field of double-temperature-zone high-temperature tube furnaces, in particular to a collecting and filtering device for a tail gas end in a double-temperature-zone high-temperature tube furnace. Comprising an outer collection filter pipe, a one-way inner collection filter pipe and a support ring, a first collecting and filtering assembly is fixedly mounted in the supporting ring, a second collecting and filtering assembly is movably mounted in the one-way inner collecting and filtering pipe, and the one-way inner collecting and filtering pipe is filled with a third collecting and filtering assembly; an arc-shaped groove is formed in the outer collecting and filtering pipe, an opening and closing assembly is movably installed in the arc-shaped groove, a positioning assembly is fixedly installed in the outer collecting and filtering pipe, a supporting long hole is formed in the left side of the supporting ring, and a first limiting detachable assembly is fixedly installed in the supporting long hole; a supporting long groove and a second threaded groove are formed in the left end of the one-way inner collecting and filtering pipe, and a second limiting detachable assembly is movably mounted in the supporting long groove; the technical problems that the collecting and filtering effects are poor, and maintenance is inconvenient are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of double-temperature-zone high-temperature tube furnaces, in particular to a collection and filtering device for tail gas ends in double-temperature-zone high-temperature tube furnaces. Background Art

[0002] A dual-zone high-temperature tubular furnace refers to a tubular furnace with two different working areas, a high-temperature zone and a low-temperature zone. During the use of the dual-zone high-temperature tubular furnace, the dual-zone high-temperature tubular furnace will produce exhaust gas. Because the pollutant content in the exhaust gas generated by the dual-zone high-temperature tubular furnace is relatively high, it is necessary to collect and filter the pollutants in the exhaust gas generated by the dual-zone high-temperature tubular furnace. Therefore, a collection and filtration device for the exhaust gas end of the dual-zone high-temperature tubular furnace is required.

[0003] For this purpose, the Chinese patent with publication number CN209147752U discloses a collection and filtering device for the tail gas end of a high-temperature tube furnace, including an inlet round tube 3, a collection tube 4 and an outlet round tube 5; one end of the inlet round tube 3 is an open end 6 and the other end is a closed end 7, the open end 6 is on the side of the insulation pipe plug 8, and a group of evenly distributed through holes 7a are provided on the closed end 7; the outlet round tube 5 is consistent with the inlet round tube 3 in structure and is arranged relatively; the collection tube 4 is a group of hollow tubes 4a that are spirally wound and extend backwards, the number of which is consistent with the number of through holes 7a, and one end corresponds to the through holes 7a connected to the inlet round tube 3, and the other end corresponds to the through holes 7a connected to the outlet round tube 5. The advantages of the utility model are simple structure and easy replacement, and it effectively removes particulate matter in the tail gas, thereby preventing the blockage of the exhaust hole valve of the tube furnace.

[0004] However, in this patent, since the pollutants in the exhaust gas are collected and filtered by cooling the high-temperature exhaust gas discharged from the tubular furnace and condensing it on the inner wall of the hollow tube, it can only simply collect pollutants that are gas at high temperature and liquid or solid at low temperature. This makes it impossible to perform multiple filtrations on the exhaust gas, and it is also impossible to classify and collect the pollutants, which reduces its collection and filtration effect. In addition, in this patent, since it is an integrated structure, its interior cannot be opened. When it needs to be maintained, the interior cannot be cleaned, which increases the difficulty of maintenance. Utility Model Content

[0005] The utility model provides a collection and filtration device for the tail gas end of a double-temperature zone high-temperature tubular furnace to solve the problems of poor collection and filtration effect and inconvenient maintenance in the prior art, which can improve the collection and filtration effect and facilitate maintenance.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a collection and filtering device for the exhaust gas end of a dual-temperature zone high-temperature tubular furnace, comprising an outer collecting filter tube, a single-pass inner collecting filter tube and a support ring, the outer side surface of the single-pass inner collecting filter tube is fixedly connected with a positioning long rod, the single-pass inner collecting filter tube and the support ring are both movably installed inside the outer collecting filter tube, the positioning long rod is movably installed inside the tube body of the single-pass inner collecting filter tube, and a plurality of exhaust holes are opened inside the tube body at the right end of the single-pass inner collecting filter tube; a first collecting and filtering component for collecting and filtering exhaust pollutants is fixedly installed inside the support ring, a second collecting and filtering component for collecting and filtering exhaust pollutants is movably installed inside the single-pass inner collecting filter tube, and the interior of the single-pass inner collecting filter tube is filled with a collecting filter. A third collecting and filtering component for collecting and filtering exhaust pollutants; a first threaded groove is provided on the top of an outer collecting and filtering tube, an arc-shaped groove is provided inside the outer collecting and filtering tube, a positioning long groove is provided on the inner bottom wall of the arc-shaped groove, an opening and closing component for opening and closing the inner part of the outer collecting and filtering tube is movably installed inside the arc-shaped groove, a positioning component for positioning the single-pass inner collecting and filtering tube is fixedly installed inside the outer collecting and filtering tube, a supporting long hole is provided on the left side of the supporting ring, a first limiting and detachable first limiting component is fixedly installed inside the supporting long hole, a supporting long groove and a second threaded groove are respectively provided on the left end of the single-pass inner collecting and filtering tube, a second limiting and detachable second limiting component is movably installed inside the supporting long groove, and a second limiting and detachable second limiting component is detachably installed.

[0007] Furthermore, the first collecting and filtering component includes a first disc-shaped filter screen, which is fixedly installed inside the support ring, and a plurality of first collecting and filtering holes are formed inside the first disc-shaped filter screen.

[0008] Furthermore, the second collecting and filtering component comprises a second disc-shaped filter screen, which is movably installed inside the single-pass inner collecting and filtering tube, and a plurality of second collecting and filtering holes are provided inside the second disc-shaped filter screen.

[0009] Furthermore, the third collecting and filtering component includes a plurality of activated carbon balls, and the plurality of activated carbon balls are filled inside the single-pass inner collecting and filtering tube.

[0010] Furthermore, the opening and closing assembly includes an arc-shaped plate, which is movably installed inside the arc-shaped groove, a positioning long plate is fixedly connected to the bottom of the arc-shaped plate, the positioning long plate is movably installed inside the positioning long groove, the outer side of the arc-shaped plate is fixedly connected to a door-shaped rod, the left and right sides of the door-shaped rod are fixedly connected to connecting long rods, the internal threads of the connecting long rods are connected to bolts, and the bolts are threadedly connected to the first thread groove.

[0011] Furthermore, the positioning assembly includes two limiting rings, both of which are fixedly installed inside the outer collecting filter tube, one limiting ring is movably connected to the supporting ring, and the other limiting ring is movably connected to the single-pass inner collecting filter tube.

[0012] Furthermore, the first position-limiting detachable component includes a supporting long plate, which is fixedly installed inside the supporting long hole, and the internal thread of the supporting long plate is connected with a screw, which is threadedly connected to the second thread groove.

[0013] Furthermore, the second position-limiting detachable component includes an L-shaped handle, which is movably installed inside the supporting long groove, and the L-shaped handle is fixedly connected to the second disc-shaped filter screen.

[0014] The working principle and use principle of the utility model are: in the process of using the device, through the arrangement of the external collecting filter tube, the single-pass internal collecting filter tube, the supporting ring, the first collecting filter assembly, the second collecting filter assembly and the third collecting filter assembly, the device can perform triple filtration on the exhaust gas, and the device can classify and collect pollutants in the exhaust gas, so that the device can improve the collection and filtration effect, and in the process of using the device, through the arrangement of the single-pass internal collecting filter tube, the positioning long rod, the opening and closing assembly, the positioning assembly, the first limit detachable assembly and the second limit detachable assembly, the interior of the device can be opened, and when the device needs to be maintained, the interior of the device can be cleaned, so that the device can be easily maintained.

[0015] The beneficial technical effects of the utility model are:

[0016] By arranging the outer collecting filter tube, the single-pass inner collecting filter tube, the supporting ring, the first collecting filter assembly, the second collecting filter assembly and the third collecting filter assembly, the device can perform triple filtration on the exhaust gas, classify and collect the pollutants in the exhaust gas, and improve the collection and filtration effect. In addition, by arranging the single-pass inner collecting filter tube, the positioning long rod, the opening and closing assembly, the positioning assembly, the first limit detachable assembly and the second limit detachable assembly, the interior of the device can be opened, so that the device can be easily maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objectives and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0018] Figure 1 It is a frontal stereoscopic schematic diagram of the utility model.

[0019] Figure 2 It is a three-dimensional schematic diagram of the arc plate of the utility model.

[0020] Figure 3 It is a three-dimensional schematic diagram of a single-pass inner collecting filter tube of the utility model.

[0021] Figure 4 It is a three-dimensional schematic diagram of the support ring of the utility model.

[0022] Figure 5 It is a three-dimensional schematic diagram of the first disc-shaped filter screen of the utility model.

[0023] Figure 6 It is a front cross-sectional schematic diagram of the utility model.

[0024] Explanation of the numbers in the figure: 1. External collecting filter tube; 2. Bolt; 3. Connecting long rod; 4. Gate-shaped rod; 5. Arc-shaped plate; 6. Positioning long plate; 7. Arc-shaped groove; 8. Positioning long groove; 9. Single-pass internal collecting filter tube; 10. Support ring; 11. Support long plate; 12. Support long hole; 13. First threaded groove; 14. First disc filter; 15. Screw; 16. Limiting ring; 17. Second threaded groove; 18. Second disc filter; 19. Support long groove; 20. L-shaped handle; 21. Exhaust hole; 22. Activated carbon ball; 23. First collecting filter hole; 24. Second collecting filter hole; 25. Positioning long rod. DETAILED DESCRIPTION

[0025] The following is a further description of the utility model of a collection and filtering device for tail gas at the end of a double-temperature zone high-temperature tubular furnace in conjunction with the accompanying drawings and specific embodiments.

[0026] like Figures 1 to 6 As shown: a collection and filtering device for the tail gas end of a dual-temperature zone high-temperature tube furnace, comprising an outer collection filter tube 1, a single-pass inner collection filter tube 9, a support ring 10, a first disc-shaped filter screen 14, a second disc-shaped filter screen 18 and a plurality of activated carbon balls 22, the outer side of the single-pass inner collection filter tube 9 is fixedly connected with a positioning long rod 25, a plurality of exhaust holes 21 are opened inside the right end of the single-pass inner collection filter tube 9, a plurality of first collection and filtering holes 23 are opened inside the first disc-shaped filter screen 14, a plurality of second disc-shaped filter screen 18 are opened inside Two collecting filter holes 24, multiple activated carbon balls 22 are filled in the interior of the single-pass inner collecting filter tube 9, and through the arrangement of the outer collecting filter tube 1, the single-pass inner collecting filter tube 9, the support ring 10, the first collecting filter component, the second collecting filter component and the third collecting filter component, the first collecting filter component, the second collecting filter component and the third collecting filter component can all collect and filter the exhaust pollutants, so that the device can perform triple filtration on the exhaust gas, the device can collect pollutants in the exhaust gas, and the device can improve the collection and filtration effect.

[0027] When in use, the initial state of the device is: the bolt 2 is threadedly connected to the first thread groove 13, the screw 15 is threadedly connected to the second thread groove 17, and the single-pass inner collecting filter tube 9 is located inside the outer collecting filter tube 1. When it is necessary to use the device to collect and filter the tail gas at the tail gas end of the dual-temperature zone high-temperature tubular furnace, the left end of the outer collecting filter tube 1 is connected to the tail gas end of the dual-temperature zone high-temperature tubular furnace and remains fixed. After the left end of the outer collecting filter tube 1 is connected to the tail gas end of the dual-temperature zone high-temperature tubular furnace and remains fixed, the tail gas end of the dual-temperature zone high-temperature tubular furnace discharges high-temperature tail gas, and the high-temperature tail gas is discharged along the outer collecting filter tubes. The pipe 1 and a limiting ring 16 pass through a plurality of first collecting filter holes 23 provided on the first disc filter 14 and a plurality of second collecting filter holes 24 provided on the second disc filter 18 and enter into the single-pass inner collecting filter pipe 9. The high-temperature exhaust gas in the single-pass inner collecting filter pipe 9 passes through a plurality of activated carbon balls 22 and is discharged along the exhaust hole 21. Under the action of the first disc filter 14 and the plurality of first collecting filter holes 23, the large particle pollutants in the high-temperature exhaust gas are blocked by the first disc filter 14 and the first collecting filter holes 23 on the left side of the first disc filter 14, so that the large particle pollutants remain in a limiting ring. The inside of the ring 16 allows large particle pollutants to be collected, allowing the high-temperature exhaust gas to be filtered for the first time. Under the action of the second disc filter 18 and the plurality of second collecting filter holes 24, the small particle pollutants in the high-temperature exhaust gas are blocked by the second disc filter 18 and the second collecting filter holes 24 on the left side of the second disc filter 18, so that the small particle pollutants remain in the inside of the plurality of first collecting filter holes 23, so that the small particle pollutants can be collected, allowing the high-temperature exhaust gas to be filtered for the second time. Under the action of the plurality of activated carbon balls 22, the plurality of activated carbon balls 22 can adsorb the particles in the high-temperature exhaust gas. Gaseous pollutants and smaller particulate pollutants, so that the gaseous pollutants and smaller particulate pollutants in the high-temperature exhaust gas can be collected, so that the high-temperature exhaust gas can be subjected to a third filtration. The high-temperature exhaust gas after the third filtration is discharged along multiple exhaust holes 21. At this time, the device can be used to collect and filter the exhaust gas at the exhaust end of the double-temperature zone high-temperature tubular furnace. In the process of using the device to collect and filter the exhaust gas at the exhaust end of the double-temperature zone high-temperature tubular furnace, the device can perform triple filtration on the exhaust gas, so that the device can classify and collect pollutants in the exhaust gas, so that the device can improve the collection and filtration effect.

[0028] like Figures 1 to 6As shown: a collection and filtering device for the tail gas end of a dual-temperature zone high-temperature tube furnace, comprising an outer collection filter tube 1, a single-pass inner collection filter tube 9, a support ring 10, an arc plate 5, two limit rings 16, a support long plate 11 and an L-shaped handle 20, the outer side of the single-pass inner collection filter tube 9 is fixedly connected with a positioning long rod 25, a plurality of exhaust holes 21 are opened inside the right end tube body of the single-pass inner collection filter tube 9, a first threaded groove 13 is opened on the top of the outer collection filter tube 1, and a The arc groove 7 has an inner bottom wall provided with a positioning long groove 8, a supporting long hole 12 is provided on the left side of the supporting ring 10, a supporting long groove 19 and a second thread groove 17 are provided on the left end of the single-pass inner collecting filter tube 9, the bottom of the arc plate 5 is fixedly connected with a positioning long plate 6, the outer side of the arc plate 5 is fixedly connected with a gate-shaped rod 4, the left and right sides of the gate-shaped rod 4 are fixedly connected with a connecting long rod 3, the inner thread of the connecting long rod 3 is connected with a bolt 2, the bolt 2 is threadedly connected with the first thread groove 13, and the bolt 2 is threadedly connected with the first thread groove 13. There are two of them, one limiting ring 16 is movably connected to the support ring 10, and the other limiting ring 16 is movably connected to the single-pass inner collecting filter tube 9. The internal thread of the supporting long plate 11 is connected with a screw 15, and the screw 15 is threadedly connected to the second thread groove 17. There are two screws 15. The L-shaped handle 20 is fixedly connected to the second disc filter 18. There are two L-shaped handles 20. Through the arrangement of the single-pass inner collecting filter tube 9, the positioning long rod 25, the opening and closing component, the positioning component, the first limiting detachable component and the second limiting detachable component, the opening and closing component can open and close the inside of the outer collecting filter tube 1, the positioning component can position the single-pass inner collecting filter tube 9, the first limiting detachable component can limit and disassemble the first collecting filter component, the second limiting detachable component can limit and disassemble the second collecting filter component, the interior of the device can be opened, and when the device needs to be maintained, the interior of the device can be cleaned, so that the device can be easily maintained.

[0029] When in use, after using the device to collect and filter the tail gas at the tail gas end of the double-temperature zone high-temperature tube furnace, when the device needs to be maintained, the two bolts 2 are rotated at the same time to disconnect the bolt 2 from the first threaded groove 13 and make one end of the bolt 2 located inside the connecting long rod 3, and move the door-shaped rod 4 upward to disconnect the arc plate 5 from the single-pass inner collecting filter tube 9, so that the arc plate 5 slides upward along the arc groove 7, and the positioning long plate 6 slides upward along the positioning long groove 8. When the arc plate 5 is disconnected from the arc groove 7 and the positioning long plate 6 is disconnected from the positioning long groove 8, the interior of the outer collecting filter tube 1 is opened, and the single-pass inner collecting filter tube 1 is moved upward. Collect filter tube 9, disconnect the positioning long rod 25 from the outer collecting filter tube 1, make the single-pass inner collecting filter tube 9 slide upward along the outer collecting filter tube 1 and a limiting ring 16 respectively, and make the support ring 10 slide upward along the other limiting ring 16. When the single-pass inner collecting filter tube 9 is disconnected from the outer collecting filter tube 1, when the single-pass inner collecting filter tube 9 is disconnected from one limiting ring 16, and when the support ring 10 is disconnected from the other limiting ring 16, the single-pass inner collecting filter tube 9 can be taken out at this time. After taking out the single-pass inner collecting filter tube 9, turn the two screws 15 in the two supporting long holes 12 at the same time to disconnect the screws 15 from the second thread groove 17 and make One end of the screw 15 is located inside the ring body of the support ring 10. At this time, the support ring 10 and the first disc-shaped filter screen 14 can be removed from the single-pass inner collecting filter tube 9. After the support ring 10 and the first disc-shaped filter screen 14 are removed from the single-pass inner collecting filter tube 9, the two L-shaped handles 20 are pulled simultaneously in the two supporting long grooves 19 to slide the L-shaped handles 20 along the supporting long grooves 19, so that the second disc-shaped filter screen 18 slides along the single-pass inner collecting filter tube 9. When the second disc-shaped filter screen 18 slides out of the single-pass inner collecting filter tube 9, the second disc-shaped filter screen 18 can be removed from the single-pass inner collecting filter tube 9. At this time, the interior of the external collecting filter tube 1 and the first disc-shaped filter screen 14 can be removed. A disc filter 14 and a plurality of first collecting filter holes 23 provided on the first disc filter 14 and a second disc filter 18 and a plurality of second collecting filter holes 24 provided on the second disc filter 18 are all cleaned, and at this time the plurality of activated carbon balls 22 in the single-pass inner collecting filter tube 9 can be poured out so as to replace the plurality of activated carbon balls 22 in the single-pass inner collecting filter tube 9. In summary, the device can be maintained at this time, and during the process of maintaining the device, the interior of the device can be opened, and when maintenance is required, the interior of the device can be cleaned, so that the device can be conveniently maintained.

[0030] In this embodiment, the diameter of the first collecting filter hole 23 is larger than the diameter of the second collecting filter hole 24 , and the diameter of the activated carbon ball 22 is smaller than the diameter of the first collecting filter hole 23 , the diameter of the second collecting filter hole 24 and the diameter of the exhaust hole 21 .

Claims

1. A collection and filtering device for an exhaust gas end of a dual-temperature zone high-temperature tube furnace, comprising an outer collection filter tube (1), a single-pass inner collection filter tube (9) and a support ring (10), wherein the outer side surface of the single-pass inner collection filter tube (9) is fixedly connected with a positioning long rod (25), the single-pass inner collection filter tube (9) and the support ring (10) are both movably mounted inside the outer collection filter tube (1), the positioning long rod (25) is movably mounted inside the tube body of the single-pass inner collection filter tube (9), and a plurality of exhaust holes (21) are opened inside the tube body at the right end of the single-pass inner collection filter tube (9); characterized in that The support ring (10) is provided with a first collecting and filtering component for collecting and filtering tail gas pollutants in a fixed manner inside the support ring (10), a second collecting and filtering component for collecting and filtering tail gas pollutants is movably installed inside the single-pass inner collecting and filtering tube (9), and a third collecting and filtering component for collecting and filtering tail gas pollutants is filled inside the single-pass inner collecting and filtering tube (9); a first threaded groove (13) is provided on the top of the outer collecting and filtering tube (1), an arc-shaped groove (7) is provided inside the outer collecting and filtering tube (1), a positioning long groove (8) is provided on the inner bottom wall of the arc-shaped groove (7), and a positioning long groove (8) is movably installed inside the arc-shaped groove (7) so as to enable the outer collecting and filtering tube (1) to be filtered. The outer collecting filter tube (1) is provided with a positioning component for positioning the single-pass inner collecting filter tube (9) fixedly installed inside the outer collecting filter tube (1), a supporting long hole (12) is provided on the left side of the supporting ring (10), a first limited position detachable component is fixedly installed inside the supporting long hole (12), a supporting long groove (19) and a second threaded groove (17) are respectively provided on the left end of the single-pass inner collecting filter tube (9), a second limited position detachable component is movably installed inside the supporting long groove (19) and a second limited position detachable component is detachable.

2. The exhaust gas collection and filtration device for a dual-temperature zone high-temperature tube furnace according to claim 1, characterized in that: The first collecting and filtering component comprises a first disc-shaped filter screen (14), the first disc-shaped filter screen (14) being fixedly mounted inside the support ring (10), and a plurality of first collecting and filtering holes (23) being provided inside the first disc-shaped filter screen (14).

3. The exhaust gas collection and filtration device for a dual-temperature zone high-temperature tube furnace according to claim 1, characterized in that: The second collecting and filtering component comprises a second disc-shaped filter screen (18), the second disc-shaped filter screen (18) being movably mounted inside the single-pass inner collecting and filtering tube (9), and a plurality of second collecting and filtering holes (24) being formed inside the second disc-shaped filter screen (18).

4. A collection and filtering device for tail gas in a dual-temperature zone high-temperature tube furnace according to claim 1, 2 or 3, characterized in that: The third collecting and filtering component comprises a plurality of activated carbon balls (22), and the plurality of activated carbon balls (22) are filled inside the single-pass inner collecting and filtering tube (9).

5. A collection and filtration device for tail gas in a dual-temperature zone high-temperature tube furnace according to claim 1, 2 or 3, characterized in that: The opening and closing assembly comprises an arc-shaped plate (5), the arc-shaped plate (5) is movably mounted inside the arc-shaped groove (7), a positioning long plate (6) is fixedly connected to the bottom of the arc-shaped plate (5), the positioning long plate (6) is movably mounted inside the positioning long groove (8), a door-shaped rod (4) is fixedly connected to the outer side surface of the arc-shaped plate (5), a connecting long rod (3) is fixedly connected to the left and right sides of the door-shaped rod (4), a bolt (2) is threadedly connected to the inner part of the connecting long rod (3), and the bolt (2) is threadedly connected to the first thread groove (13).

6. A collection and filtration device for tail gas in a dual-temperature zone high-temperature tube furnace according to claim 1, 2 or 3, characterized in that: The positioning assembly comprises two limiting rings (16), both limiting rings (16) are fixedly mounted inside the outer collecting filter tube (1), one limiting ring (16) is movably connected to the support ring (10), and the other limiting ring (16) is movably connected to the single-pass inner collecting filter tube (9).

7. The device for collecting and filtering tail gas at the end of a dual-temperature zone high-temperature tube furnace according to claim 4, characterized in that: The positioning assembly comprises two limiting rings (16), both limiting rings (16) are fixedly mounted inside the outer collecting filter tube (1), one limiting ring (16) is movably connected to the support ring (10), and the other limiting ring (16) is movably connected to the single-pass inner collecting filter tube (9).

8. The tail gas collection and filtering device for a dual-temperature zone high-temperature tube furnace according to claim 1, 2, 3 or 7, characterized in that: The first position-limiting detachable component comprises a supporting long plate (11), the supporting long plate (11) being fixedly mounted inside the supporting long hole (12), the internal thread of the supporting long plate (11) being connected to a screw (15), and the screw (15) being threadedly connected to the second thread groove (17).

9. A collection and filtering device for tail gas in a dual-temperature zone high-temperature tube furnace according to claim 1, 2, 3 or 7, characterized in that: The first position-limiting detachable component comprises a supporting long plate (11), the supporting long plate (11) being fixedly mounted inside the supporting long hole (12), the internal thread of the supporting long plate (11) being connected to a screw (15), and the screw (15) being threadedly connected to the second thread groove (17).

10. The tail gas collection and filtering device for a dual-temperature zone high-temperature tube furnace according to claim 3, characterized in that: The second position-limiting detachable component comprises an L-shaped handle (20), the L-shaped handle (20) being movably mounted inside the supporting long groove (19), and the L-shaped handle (20) being fixedly connected to the second disc-shaped filter screen (18).

Images