CN217210277U - Tubular rotary furnace for calcining niobium hydroxide into niobium pentoxide at high temperature - Google Patents

Abstract

The utility model discloses a niobium pentoxide's tubular rotary furnace is calcined into to niobium hydroxide high temperature, its technical scheme main points are: the device comprises a substrate, wherein a processing plate is arranged on the top surface of the substrate; the control assembly, the control assembly sets up the top surface of handling the board for control the quantity of material, stay tube through setting up, the staff places the stay tube at the top surface of fixed pipe, joint piece, mounting groove and first spring through setting up, the joint piece, mounting groove and first spring use of mutually supporting make the joint piece get into the mounting groove, second spring through setting up, gu fixed ring, the support column, the fly leaf, supporting shoe and fixed slot, the second spring, gu fixed ring, the support column, the fly leaf, supporting shoe and fixed slot use of mutually supporting restrict the stay tube, the staff can continue to place new stay tube at the top surface of stay tube according to the demand and place more materials, reach the control effect to the material.

Description

Tubular rotary furnace for calcining niobium hydroxide into niobium pentoxide at high temperature

Technical Field

The utility model relates to a tubular rotary furnace technical field, concretely relates to niobium pentoxide's tubular rotary furnace is calcined into to niobium pentoxide to niobium hydroxide high temperature.

Background

The tubular rotary furnace belongs to a general thermal kiln, is a light continuous furnace, is widely applied to the rapid firing of products such as chemical powder, particles and the like, has the advantages of short firing period, low labor intensity and the like, is mainly applied to the primary rough processing of powder or mineral materials, such as the firing and the calcination of cement clinker, the preparation of titanium dioxide from kaolin, the rare earth industry, the processing of rare and precious industries and the like, has high thermal efficiency, increases the heated area of the materials along with the movement of the rotary furnace, enhances the effects of heat conduction and heat radiation, and shortens the firing period of the materials.

At present, in the process of using the tubular rotary furnace on the market, because the staff adds the material to the inside of the tubular rotary furnace, the staff is difficult to control the quantity of the material added into the tubular rotary furnace, and the use of the staff is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a niobium pentoxide's tubular rotary furnace is calcined to niobium hydroxide high temperature has solved because the staff is adding the in-process of material to the inside of tubular rotary furnace, and the staff is difficult to control and adds the quantity of the material of going into tubular rotary furnace, influences the problem that the staff used.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a tubular rotary furnace for calcining niobium hydroxide into niobium pentoxide at high temperature comprises: the device comprises a substrate, a processing plate and a substrate, wherein the top surface of the substrate is provided with the processing plate; a control assembly disposed on the top surface of the processing plate for controlling the quantity of the material, the control assembly comprising: the fixed pipe is arranged on the top surface of the treatment plate, the top surface of the fixed pipe is provided with a supporting pipe, fixed frames are fixedly arranged on two sides of the fixed pipe and two sides of the supporting pipe respectively, two placing columns are fixedly arranged in the fixed frames, fixing rings are movably sleeved on the excircle wall surfaces of the placing columns, supporting columns are fixedly arranged on the excircle wall surfaces of the fixing rings, movable plates are fixedly arranged on the top surfaces of the two supporting columns, supporting blocks are fixedly arranged on one sides of the movable plates, fixing grooves are formed in two sides of the supporting pipe respectively, the supporting blocks are movably sleeved with the fixing grooves, second springs are movably sleeved on the excircle wall surfaces of the placing columns, one ends of the second springs are fixedly connected with one ends of the fixing rings, and the other ends of the second springs are fixedly connected with one side in the fixed frames, one side fixed mounting of fly leaf has the mounting panel, the top surface fixed mounting of fixed frame has the carriage, the mounting panel with the carriage activity is cup jointed, the mounting groove has all been seted up to the both sides of mounting panel, the joint piece has been cup jointed in the inside activity of mounting groove, the inside fixed mounting of mounting groove has first spring, the one end of first spring with one side fixed connection of joint piece.

In order to avoid fixed pipe and stay tube dislocation, as the utility model discloses a tubular rotary furnace of niobium pentoxide is calcined to niobium hydroxide high temperature, the preferred, the control assembly still includes: the limiting device comprises a plurality of limiting columns, wherein the bottom surfaces of supporting tubes are fixedly mounted on the limiting columns, a plurality of limiting holes are formed in the top surfaces of the fixing tubes and the top surfaces of the supporting tubes, and the outer circle wall surfaces of the limiting columns are fixedly sleeved with the inner circle wall surfaces of the limiting holes.

In order to avoid the control of the inclination angle of the processing plate by the operator, the tubular rotary furnace for calcining niobium hydroxide into niobium pentoxide at high temperature, as the utility model, is preferred, two connecting plates are fixedly arranged on the top surface of the base plate, a rotary hole is arranged on one side of the connecting plate, a rotary column is movably sleeved on the inner circular wall surface of the rotary hole, one end of the rotary column is fixedly connected with one side of the processing plate, a plurality of fixed blocks are fixedly arranged on one side of the processing plate, every two fixed blocks are in one group, a fixed column is fixedly arranged between each group of the fixed blocks, two electric push rods are fixedly arranged on the top surface of the base plate, a circular through hole is arranged on the outer circular wall surface of the telescopic shaft of the electric push rod, the inner circular wall surface of the circular through hole is movably sleeved with the outer circular wall surface of the fixed column, and a PLC controller is fixedly arranged on the top surface of the base plate, the PLC controller is electrically connected with the electric push rod.

For the convenience of staff removes the material, as the utility model discloses a tubular rotary furnace of niobium pentoxide is calcined to niobium hydroxide high temperature, the preferred, the top surface of handling the board is provided with handles the case, the circular through-hole has been seted up to the one end of handling the case, the one end fixed mounting of handling the case has driving motor, driving motor with PLC controller electric connection, driving motor's drive shaft with the activity of the interior circle wall of circular through-hole is cup jointed and is extended to handle the inside of case, the one end fixed mounting of driving motor's drive shaft has the conveying pole, the feed port has been seted up to the excircle wall of handling the case, the feed port with fixed pipe is fixed to be cup jointed, the excircle wall fixed mounting of handling the case has the spliced pole, the bottom surface of spliced pole with the top surface fixed connection of handling the board.

In order to facilitate the staff to handle the material of handling incasement portion, as the utility model discloses a niobium hydroxide high temperature is calcined into niobium pentoxide's tubular rotary furnace, the preferred, the top surface fixed mounting who handles the board has tubular rotary furnace body, circular through-hole has been seted up to one side of tubular rotary furnace body, the fixed first solenoid valve that has cup jointed of interior circle wall of circular through-hole, first solenoid valve with PLC controller electric connection, the interior circle wall of first solenoid valve with the fixed cup joint of excircle wall of handling the case.

In order to facilitate the staff add the material toward the inside of handling the case, as the utility model discloses a tubular rotary furnace of niobium pentoxide is calcined to niobium hydroxide high temperature, the preferred, circular through-hole has been seted up to the bottom surface of fixed pipe, the fixed second solenoid valve that has cup jointed of interior circle wall of circular through-hole, the second solenoid valve with PLC controller electric connection.

In order to facilitate the change of the position of the base plate by the staff, the utility model discloses a tubular rotary furnace for calcining niobium hydroxide into niobium pentoxide at high temperature, the preferred, the bottom surface fixed mounting of base plate has a plurality of supporting leg, the bottom surface fixed mounting of supporting leg has the universal wheel.

To sum up, the utility model discloses mainly have following beneficial effect:

through the stay tube that sets up, the staff places the stay tube at the top surface of fixed pipe, joint piece through setting up, mounting groove and first spring, the joint piece, mounting groove and first spring are mutually supported and are used and make the joint piece get into the mounting groove, second spring through setting up, gu fixed ring, the support column, the fly leaf, supporting shoe and fixed slot, the second spring, gu fixed ring, the support column, the fly leaf, supporting shoe and fixed slot are mutually supported and are used and restrict the stay tube, the staff can continue to place new stay tube at the top surface of stay tube according to the demand and place more materials, reach the control effect to the material.

Through the stay tube that sets up, when the staff placed the stay tube at the top surface of fixed pipe, the restriction post can get into the inside in restriction hole and restrict the stay tube, avoids fixed pipe and stay tube dislocation.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the supporting tube structure of the present invention;

FIG. 3 is a partial schematic view of A of FIG. 2;

FIG. 4 is a left side view of the processing board structure of the present invention;

FIG. 5 is a schematic view of the structure of the treatment tank of the present invention;

FIG. 6 is a schematic view of the restraining post of the present invention;

fig. 7 is a schematic structural view of the fixing tube of the present invention;

fig. 8 is a schematic view of the structure of the base plate of the present invention;

fig. 9 is a schematic view of the mounting plate structure of the present invention.

Reference numerals: 1. a substrate; 2. processing the plate; 3. connecting columns; 4. a treatment tank; 5. a tubular rotary furnace body; 6. a first spring; 7. a feed port; 8. a fixed tube; 9. supporting a tube; 10. a fixing frame; 11. a second spring; 12. supporting legs; 13. a clamping block; 14. a support frame; 15. an electric push rod; 16. mounting a plate; 17. a movable plate; 18. a support block; 19. fixing grooves; 20. placing the column; 21. a support pillar; 22. mounting grooves; 23. a fixed block; 24. fixing a column; 25. a first solenoid valve; 26. a drive motor; 27. a conveying rod; 28. a restraining post; 29. a limiting aperture; 30. a second solenoid valve; 31. a connecting plate; 32. a spin column; 33. rotating the hole; 34. and (4) fixing the ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, 2, 3, 6 and 9, a tubular rotary kiln for calcining niobium hydroxide to niobium pentoxide at high temperature comprises a substrate 1, wherein a processing plate 2 is arranged on the top surface of the substrate 1, a control assembly is arranged on the top surface of the processing plate 2 and used for controlling the amount of materials, the control assembly comprises a fixed tube 8, the fixed tube 8 is arranged on the top surface of the processing plate 2, a supporting tube 9 is arranged on the top surface of the fixed tube 8, fixed frames 10 are fixedly arranged on both sides of the fixed tube 8 and both sides of the supporting tube 9, two placing columns 20 are fixedly arranged inside the fixed frame 10, a fixed ring 34 is movably sleeved on the outer circular wall surface of the placing column 20, supporting columns 21 are fixedly arranged on the outer circular wall surface of the fixed ring 34, a movable plate 17 is fixedly arranged on the top surfaces of the two supporting columns 21, supporting blocks 18 are fixedly arranged on one side of the movable plate 17, fixing grooves 19 are arranged on both sides of the supporting tube 9, supporting shoe 18 cup joints with the fixed slot 19 activity, the excircle wall activity of placing post 20 has cup jointed second spring 11, second spring 11 does not do the repeated description here for existing structure, the one end of second spring 11 and the one end fixed connection of solid fixed ring 34, the other end of second spring 11 and the inside one side fixed connection of fixed frame 10, one side fixed mounting of fly leaf 17 has mounting panel 16, the top surface fixed mounting of fixed frame 10 has carriage 14, mounting panel 16 cup joints with carriage 14 activity, mounting groove 22 has all been seted up to mounting panel 16's both sides, joint piece 13 has been cup jointed in the inside activity of mounting groove 22, the inside fixed mounting of mounting groove 22 has first spring 6, the one end of first spring 6 and one side fixed connection of joint piece 13, through the stay tube 9 that sets up, the staff places stay tube 9 at the top surface of fixed tube 8, joint piece 13 through setting, the staff presses joint piece 13 and makes first spring 6 make the inside of joint piece 13 entering mounting groove 22 make simultaneously first spring 6 6 is compressed, the limitation of the clamping block 13 is lost, the acting force of the second spring 11 enables the fixing ring 34 to move forward, the fixing ring 34 moves to drive the supporting column 21 to move forward, the supporting column 21 moves forward to drive the movable plate 17 and the supporting block 18 to move forward to enter the inside of the fixing groove 19, so as to limit the supporting tube 9, a worker fills the materials to be processed into the fixing tube 8 and the supporting tube 9, the worker can continuously place a new supporting tube 9 on the top surface of the supporting tube 9 to place more materials according to the requirement, the capacity of the fixing tube 8 is fixed, the number of the supporting tubes 9 added by the worker according to the requirement controls the number of the materials, the control effect on the materials is achieved, the control component further comprises a plurality of limiting columns 28, the bottom surfaces of the supporting tubes 9 are fixedly installed on the plurality of limiting columns 28, a plurality of limiting holes 29 are formed in the top surfaces of the fixing tube 8 and the supporting tube 9, the excircle wall surface of the limiting column 28 is fixedly sleeved with the inner circle wall surface of the limiting hole 29, and through the arranged supporting tube 9, when a worker places the supporting tube 9 on the top surface of the fixing tube 8, the limiting column 28 can enter the limiting hole 29 to limit the supporting tube 9, so that dislocation of the fixing tube 8 and the supporting tube 9 is avoided.

Referring to fig. 1, 4, 5, 6, 7 and 8, two connecting plates 31 are fixedly mounted on the top surface of a substrate 1, a rotation hole 33 is formed on one side of the connecting plate 31, a rotation column 32 is movably sleeved on the inner circular wall surface of the rotation hole 33, one end of the rotation column 32 is fixedly connected with one side of a processing plate 2, a plurality of fixing blocks 23 are fixedly mounted on one side of the processing plate 2, every two fixing blocks 23 form a group, a fixing column 24 is fixedly mounted between each group of fixing blocks 23, two electric push rods 15 are fixedly mounted on the top surface of the substrate 1, the electric push rods 15 are of the existing structure and are not described herein again, a circular through hole is formed on the outer circular wall surface of a telescopic shaft of the electric push rod 15, the inner circular wall surface of the circular through hole is movably sleeved with the outer circular wall surface of the fixing column 24, a PLC controller is fixedly mounted on the top surface of the substrate 1, the PLC controller is of the existing structure and is not described herein, and is electrically connected with the electric push rods 15, through the arranged electric push rod 15, the telescopic shaft of the electric push rod 15 moves to drive the fixed column 24 and the fixed block 23 to move upwards, the fixed column 24 and the fixed block 23 move upwards to drive the rear half part of the processing plate 2 to move upwards and simultaneously enable the front half part of the fixed pipe 8 to drive the rotary column 32 to rotate in the rotary hole 33, the situation that a worker controls the inclination angle of the processing plate 2 is avoided, the top surface of the processing plate 2 is provided with the processing box 4, the processing box 4 is of a hollow cylindrical structure, one end of the processing box 4 is open, one end of the processing box 4 is provided with a circular through hole, one end of the processing box 4 is fixedly provided with the driving motor 26, the driving motor 26 is an existing structure and is not repeated, the driving motor 26 is electrically connected with the PLC, the driving shaft of the driving motor 26 is movably sleeved with the inner circular wall surface of the circular through hole and extends to the inside of the processing box 4, one end of the driving shaft of the driving motor 26 is fixedly provided with the conveying rod 27, the outer circular wall surface of the treatment box 4 is provided with a feeding hole 7, the feeding hole 7 is fixedly sleeved with a fixed pipe 8, the outer circular wall surface of the treatment box 4 is fixedly provided with a connecting column 3, the bottom surface of the connecting column 3 is fixedly connected with the top surface of the treatment plate 2, a driving shaft of the driving motor 26 rotates to drive a conveying rod 27 to rotate, the conveying rod 27 rotates to convey materials in the treatment box 4, so that workers can move the materials, the top surface of the treatment plate 2 is fixedly provided with a tubular rotary kiln body 5, the tubular rotary kiln body 5 is of an existing structure and is not described herein, one side of the tubular rotary kiln body 5 is provided with a circular through hole, the inner circular wall surface of the circular through hole is fixedly sleeved with a first electromagnetic valve 25, the first electromagnetic valve 25 is of an existing structure and is not described herein, the first electromagnetic valve 25 is electrically connected with a PLC controller, the inner circular wall surface of the first electromagnetic valve 25 is fixedly sleeved with the outer circular wall surface of the treatment box 4, through the arranged first electromagnetic valve 25, a worker opens the first electromagnetic valve 25, materials in the treatment box 4 enter the interior of the tubular rotary furnace body 5 through the first electromagnetic valve 25, the worker can conveniently treat the materials in the treatment box 4, a circular through hole is formed in the bottom surface of the fixing pipe 8, a second electromagnetic valve 30 is fixedly sleeved on the inner circular wall surface of the circular through hole, the second electromagnetic valve 30 is an existing structure and is not repeated herein, the second electromagnetic valve 30 is electrically connected with the PLC, through the arranged second electromagnetic valve 30, the worker opens the second electromagnetic valve 30, the materials in the fixing pipe 8 and the supporting pipe 9 can enter the interior of the treatment box 4 through the second electromagnetic valve 30, the worker can conveniently add the materials into the treatment box 4, a plurality of supporting legs 12 are fixedly arranged on the bottom surface of the base plate 1, universal wheels are fixedly arranged on the bottom surfaces of the supporting legs 12, through the supporting leg 12 who sets up, supporting leg 12 can support base plate 1, and the staff can remove base plate 1 through the universal wheel, and the staff of being convenient for changes base plate 1's position.

The working principle is as follows: referring to fig. 1-9, through the arranged supporting tube 9, the worker places the supporting tube 9 on the top surface of the fixing tube 8, through the arranged clamping block 13, the worker presses the clamping block 13 to make the clamping block 13 enter the inside of the installation groove 22 and simultaneously make the first spring 6 compressed, the limitation of the clamping block 13 is lost, the acting force of the second spring 11 makes the fixing ring 34 move forward, the fixing ring 34 moves to drive the supporting column 21 to move forward, the supporting column 21 moves forward to drive the movable plate 17 and the supporting block 18 to move forward to enter the inside of the fixing groove 19, so as to limit the supporting tube 9, the worker fills the inside of the fixing tube 8 and the supporting tube 9 with the material to be processed, the worker can continue to place a new supporting tube 9 on the top surface of the supporting tube 9 to place more material according to the requirement, the capacity of the fixing tube 8 is fixed, the staff adds the quantity of stay tube 9 according to the demand and controls the quantity of material, reaches the control effect to the material, through the stay tube 9 that sets up, when the staff placed stay tube 9 at the top surface of fixed pipe 8, and restriction post 28 can get into the inside of restricting hole 29 and restrict stay tube 9, avoids fixed pipe 8 and stay tube 9 dislocation.

Through the second solenoid valve 30 that sets up, the staff opens second solenoid valve 30, the inside material of fixed pipe 8 and stay tube 9 can get into the inside of handling case 4 through second solenoid valve 30, the staff of being convenient for adds the material toward the inside of handling case 4, through the driving motor 26 who sets up, driving motor 26's drive shaft rotates and drives and carries pole 27 to rotate, carry pole 27 to rotate and carry the material of handling the case 4 inside, the staff of being convenient for removes the material.

Through the first solenoid valve 25 that sets up, first solenoid valve 25 is opened to the staff, handle the inside material of case 4 and get into the inside of tubular rotary furnace body 5 through first solenoid valve 25, the staff of being convenient for handles the inside material of case 4, through the electric putter 15 that sets up, the telescopic shaft of electric putter 15 removes and drives fixed column 24 and fixed block 23 rebound, fixed column 24 and fixed block 23 rebound drive handle board 2 latter half rebound make fixed pipe 8's first half drive column 32 rotate at the inside of swivelling joint 33 simultaneously, avoid staff control to handle board 2's inclination.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A tubular rotary furnace for calcining niobium hydroxide into niobium pentoxide at high temperature is characterized by comprising:

the device comprises a substrate (1), wherein a processing plate (2) is arranged on the top surface of the substrate (1);

a control assembly disposed on a top surface of the processing plate (2) for controlling the amount of material, the control assembly comprising: fixed pipe (8), fixed pipe (8) set up the top surface of handling board (2), the top surface of fixed pipe (8) is provided with stay tube (9), the both sides of fixed pipe (8) with the equal fixed mounting in both sides of stay tube (9) has fixed frame (10), the inside fixed mounting of fixed frame (10) has two to place post (20), the excircle wall activity of placing post (20) has cup jointed solid fixed ring (34), the excircle wall fixed mounting of solid fixed ring (34) has support column (21), two the top surface fixed mounting of support column (21) has fly leaf (17), one side fixed mounting of fly leaf (17) has supporting shoe (18), fixed slot (19) have all been seted up to the both sides of stay tube (9), supporting shoe (18) with fixed slot (19) activity cup joints, the excircle wall activity of placing post (20) has cup jointed second spring (11), the one end of second spring (11) with the one end fixed connection of solid fixed ring (34), the other end of second spring (11) with inside one side fixed connection of fixed frame (10), one side fixed mounting of fly leaf (17) has mounting panel (16), the top surface fixed mounting of fixed frame (10) has carriage (14), mounting panel (16) with carriage (14) activity is cup jointed, mounting groove (22) have all been seted up to the both sides of mounting panel (16), joint piece (13) have been cup jointed in the inside activity of mounting groove (22), the inside fixed mounting of mounting groove (22) has first spring (6), the one end of first spring (6) with one side fixed connection of joint piece (13).

2. The rotary tube furnace for high temperature calcination of niobium hydroxide to niobium pentoxide of claim 1, wherein the control assembly further comprises:

a plurality of restriction post (28), the equal fixed mounting of a plurality of restriction post (28) has the bottom surface of stay tube (9), the top surface of fixed pipe (8) with a plurality of restriction hole (29) have all been seted up to the top surface of stay tube (9), the excircle wall of restriction post (28) with the fixed cover of interior circle wall in restriction hole (29).

3. The rotary tube furnace for high-temperature calcination of niobium hydroxide into niobium pentoxide according to claim 1, wherein: the top surface of the base plate (1) is fixedly provided with two connecting plates (31), one side of each connecting plate (31) is provided with a rotating hole (33), an inner circle wall surface of each rotating hole (33) is movably sleeved with a rotating column (32), one end of each rotating column (32) is fixedly connected with one side of the processing plate (2), one side of each processing plate (2) is fixedly provided with a plurality of fixed blocks (23), every two fixed blocks (23) form a group, each group of fixed blocks (23) is fixedly provided with a fixed column (24) between the fixed blocks (23), the top surface of the base plate (1) is fixedly provided with two electric push rods (15), the outer circle wall surface of a telescopic shaft of each electric push rod (15) is provided with a circular through hole, the inner circle wall surface of the circular through hole is movably sleeved with the outer circle wall surface of the fixed column (24), and the top surface of the base plate (1) is fixedly provided with a PLC controller, the PLC is electrically connected with the electric push rod (15).

4. The rotary tube furnace for high-temperature calcination of niobium hydroxide to niobium pentoxide according to claim 3, wherein: the top surface of the processing plate (2) is provided with a processing box (4), one end of the processing box (4) is provided with a circular through hole, one end of the processing box (4) is fixedly provided with a driving motor (26), the driving motor (26) is electrically connected with the PLC, the driving shaft of the driving motor (26) is movably sleeved with the inner circular wall surface of the circular through hole and extends to the inside of the treatment box (4), one end of a driving shaft of the driving motor (26) is fixedly provided with a conveying rod (27), the excircle wall surface of the treatment box (4) is provided with a feed port (7), the feed port (7) is fixedly sleeved with the fixed pipe (8), the outer circle wall surface of the treatment box (4) is fixedly provided with a connecting column (3), the bottom surface of the connecting column (3) is fixedly connected with the top surface of the processing plate (2).

5. The rotary tube furnace for high-temperature calcination of niobium hydroxide into niobium pentoxide according to claim 4, wherein: the top surface fixed mounting who handles board (2) has tubular rotary furnace body (5), circular through-hole has been seted up to one side of tubular rotary furnace body (5), first solenoid valve (25) have been cup jointed to the interior circle wall of circular through-hole fixed, first solenoid valve (25) with PLC controller electric connection, the interior circle wall of first solenoid valve (25) with the outer circle wall of handling case (4) is fixed cup joints.

6. The rotary tube furnace for high-temperature calcination of niobium hydroxide into niobium pentoxide according to claim 5, wherein: the bottom surface of the fixed pipe (8) is provided with a circular through hole, the inner circle wall surface of the circular through hole is fixedly sleeved with a second electromagnetic valve (30), and the second electromagnetic valve (30) is electrically connected with the PLC.

7. The rotary tube furnace for high-temperature calcination of niobium hydroxide to niobium pentoxide according to claim 1, wherein: the bottom surface fixed mounting of base plate (1) has a plurality of supporting leg (12), the bottom surface fixed mounting of supporting leg (12) has the universal wheel.

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