Preheating device for desulfurizing agent preparation roasting furnace and preparation method

Abstract

The invention relates to the technical field of desulfurizer preparation, in particular to a preheating device for a desulfurizer preparation roasting furnace and a preparation method. A transmission plate is fixed to the lower output end of a motor; a driving plate is movably arranged at the end of the transmission plate; a supporting lantern ring is fixed to the side surface of the driving plate; a supporting column is movably arranged on the inner wall of the supporting lantern ring; the device has the beneficial effects that a connecting pipe rotates to drive a fixing ring to rotate, the fixing ring rotates to drive a bevel gear to rotate, and a guide rod is movably inserted into the corner pipe in a penetrating manner, so that the bevel gear rotates to drive a sawtooth disc to rotate in the corner pipe through the guide rod; and the sawtooth disc rotates to scatter caked raw materials, so that the flowability of the raw materials is improved, and the blockage prevention of the desulfurizer raw materials at the corner of the conveying pipe is realized.

Description

Technical Field

[0001] The invention relates to the technical field of desulfurizing agent preparation, in particular to a preheating device for a desulfurizing agent preparation roasting furnace and a preparation method thereof. Background Art

[0002] Desulfurizer refers to a class of chemical substances or combinations of substances that can react chemically with sulfur oxides in exhaust gas to convert them into harmless or low-hazardous substances.

[0003] In the prior art, desulfurizers play an important role in environmental governance. There are many methods for preparing desulfurizers, such as mechanical dry mixing, coprecipitation and melting. In order to make the desulfurizer have better high-temperature stability and activity, the melting method is usually used for preparation. The mixed desulfurizer raw materials are placed in a high-temperature roasting furnace for melting, and then cooled to obtain a solid desulfurizer. In order to make the roasting furnace more energy-efficient, the raw materials are usually placed in a preheating furnace for preheating before being placed in the roasting furnace, so that the heating process of the raw materials in the roasting furnace is smoother and faster, reducing resource waste and improving energy saving.

[0004] However, most existing preheating furnaces are equipped with a stirring mechanism to speed up the preheating time of raw materials, and the stirring rods of existing stirring components are mostly fixed during stirring, which makes the stirring range of the stirring rod fixed and can only stir the raw material powders on the same layer, but the stirring effect on the upper and lower layers of raw materials is not good, which increases the preheating time. Summary of the invention

[0005] The object of the present invention is to provide a preheating device for a desulfurizing agent preparation roasting furnace and a preparation method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a preheating device for a desulfurization agent preparation roasting furnace, a preheating furnace body, a top cover fixed on the upper end of the preheating furnace body, a feed pipe fixedly inserted into the top cover, a connecting pipe movably provided at the end of the feed pipe, a feed pipe fixed at the end of the connecting pipe, a sawtooth disk movably provided inside the feed pipe;

[0007] A motor, wherein a transmission plate is fixed at the lower output end of the motor, a driving plate is movably provided at the end of the transmission plate, a supporting collar is movably provided on the surface of the driving plate, a supporting column is movably provided on the inner wall of the supporting collar, and a stirring blade is movably provided at the lower end of the supporting column.

[0008] Preferably, a heating chamber and a preheating chamber are provided inside the main body of the preheating furnace, a transmission gear block and a support ring are fixed to the inner wall of the preheating chamber, a ball groove is provided inside the support ring, a corner tube is fixed at one end of the feed pipe, and the corner tube is movably connected to the connecting pipe.

[0009] Preferably, a guide rod is movably inserted into the inner wall of the corner tube, a serrated disk is fixed to one end of the guide rod, a bevel gear is fixed to the other end of the guide rod, the serrated disk is located inside the corner tube, and the bevel gear is located outside the corner tube.

[0010] Preferably, a fixing ring is fixed on the outer surface of the upper end of the connecting pipe, a gear block is fixed on the upper surface of the fixing ring, and the gear block corresponds to and is clamped with the bevel gear to be movably connected.

[0011] Preferably, a transmission belt is movably sleeved on the outer surface of the lower end of the connecting pipe, and the other end of the transmission belt is movably sleeved on the outer surface of the output end of the motor, and the motor is fixed to the upper surface of the top cover.

[0012] Preferably, a connecting rod is fixed to the upper surface of one end of the driving plate, and the connecting rod is movably inserted into the end of the transmission plate, and the lower surface of the driving plate is not in contact with the upper surface of the top cover.

[0013] Preferably, a tooth groove is provided on one side surface of the driving plate, a support bracket is movably provided on the upper surface of the driving plate, and the support ring is fixed to the end of the support bracket.

[0014] Preferably, the support column is movably inserted into the top cover, a gear is fixed to the upper end of the support column, a support rod is fixed to the upper surface of the gear, a rotating rod is movably provided at the lower end of the support column, a movable bevel gear is fixed to one end of the rotating rod, a stirring blade is fixed to the other end of the rotating rod, and a universal ball is fixed to the outer surface of the rotating rod.

[0015] Preferably, the movable bevel gear corresponds to and is clamped on the transmission gear block, the universal ball corresponds to and is movably clamped on the ball groove, the support ring corresponds to and is clamped on the support rod, and the two are movably connected, and the gear corresponds to and is clamped on the tooth groove, and the two are movably connected.

[0016] A method for preparing a preheating device for a roasting furnace according to the above-mentioned desulfurizing agent comprises the following steps:

[0017] Step 1: Anti-blocking. When the motor is started, it will drive the connecting pipe to rotate through the transmission belt. The rotation of the connecting pipe will drive the fixed ring to rotate. Due to the matching of the tooth grooves, the tooth block and the bevel gear match, so the rotation of the fixed ring will drive the bevel gear to rotate. Since the guide rod is movably inserted into the corner tube, the rotation of the bevel gear will drive the sawtooth disk to rotate inside the corner tube through the guide rod. When the fluidity of the desulfurizer raw material powder decreases and agglomerates through the corner tube, the rotation of the sawtooth disk will break up the agglomerated raw materials and increase their fluidity, so that they can quickly pass through the corner tube into the preheating bin, thereby realizing the anti-blocking of the desulfurizer raw materials at the corner of the feed pipe;

[0018] Step 2: Stirring. When the motor is started, it will drive the transmission plate to rotate through the lower output end. Since the end of the driving plate is movably connected to the transmission plate, the end of the driving plate will pull the driving plate to move back and forth regularly when it makes an arc motion around the motor axis. Moreover, since the tooth grooves on the side surface of the driving plate are correspondingly arranged with the gears, the back and forth movement of the driving plate will drive the support column to rotate regularly alternately counterclockwise and clockwise through the gears. The supporting collar is movably connected to the support rod and the driving plate, which starts the positioning of the driving plate to prevent the driving plate from deflecting when moving and to prevent the tooth grooves from separating from the gears. The support column rotates counterclockwise and clockwise. The alternating rotation of the needle will drive the rotating rod at the lower end of the supporting column to rotate alternately counterclockwise and clockwise with the universal ball as the axis. Since the upper end of the rotating rod makes an arc motion with the supporting column as the axis, and the movable bevel gear and the transmission gear block are clamped, the rotating rod will rotate when making an arc motion, thereby driving the stirring blade to rotate when making an arc motion. The stirring blade stirs the desulfurizer raw materials preheated in the preheating bin so that the raw materials can be preheated evenly. At the same time, the alternating counterclockwise and clockwise arc motions and the self-rotating stirring blades can also stir the upper and lower layers of raw materials at the same time to make them evenly distributed, thereby improving the preheating efficiency.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] When the motor is started, it will drive the transmission plate to rotate through the lower output end. When the end of the transmission plate makes a circular motion around the motor axis, it will pull the drive plate to move back and forth regularly. The back and forth movement of the drive plate will drive the support column to rotate regularly alternately counterclockwise and clockwise through the gear. The alternating counterclockwise and clockwise rotation of the support column will drive the rotating rod at the lower end of the support column to rotate alternately counterclockwise and clockwise with the universal ball as the axis. The rotating rod will rotate when making a circular motion, thereby driving the stirring blade to rotate when making a circular motion. The stirring blade stirs the desulfurizer raw materials preheated in the preheating bin so that the raw materials can be preheated evenly. At the same time, the alternating counterclockwise and clockwise circular motion and the self-rotating stirring blade can also stir the upper and lower layers of raw materials at the same time to make them evenly distributed, thereby improving the preheating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a three-dimensional schematic diagram of the main structure of the preheating furnace of the present invention;

[0023] Figure 3 It is a three-dimensional schematic diagram of the anti-blocking component structure of the present invention;

[0024] Figure 4 It is a three-dimensional schematic diagram of the top cover assembly structure of the present invention;

[0025] Figure 5It is an exploded stereoscopic schematic diagram of the stirring assembly structure of the present invention;

[0026] Figure 6 It is a truncated three-dimensional schematic diagram of the driving plate structure of the present invention;

[0027] Figure 7 It is an exploded stereoscopic schematic diagram of the structure of the material delivery pipe assembly of the present invention;

[0028] Figure 8 It is an exploded stereoscopic schematic diagram of the connecting pipe assembly structure of the present invention.

[0029] In the figure: 1. conveying pipe; 2. feeding pipe; 3. top cover; 4. preheating furnace body; 5. heating chamber; 6. preheating chamber; 7. stirring blade; 8. motor; 9. transmission belt; 10. corner pipe; 11. connecting pipe; 12. transmission plate; 13. support column; 14. gear; 15. driving plate; 16. supporting bracket; 17. supporting collar; 18. supporting rod; 19. connecting rod; 20. tooth groove; 21. fixing ring; 22. guide rod; 23. bevel gear; 24. sawtooth disk; 25. gear block; 26. transmission gear block; 27. ball groove; 28. support ring; 29. ​​rotating rod; 30. movable bevel gear; 31. universal ball. DETAILED DESCRIPTION

[0030] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 8 The present invention provides a technical solution: a preheating device and a preparation method for a desulfurizing agent preparation roasting furnace.

[0032] Embodiment 1, a preheating device for a desulfurizer preparation roasting furnace, comprises: a top cover 3 is fixed on the upper end of the preheating furnace body 4, a feed pipe 2 is fixedly inserted into the top cover 3, a connecting pipe 11 is movably provided at the end of the feed pipe 2, a delivery pipe 1 is fixed at the end of the connecting pipe 11, a serrated disk 24 is movably provided inside the delivery pipe 1, when the desulfurizer raw material powder passes through the corner tube 10 and its fluidity is reduced and agglomerated, the rotation of the serrated disk 24 will break up the agglomerated raw materials and increase their fluidity, so that they can quickly pass through the corner tube 10 into the preheating bin 6, thereby realizing the anti-blocking of the desulfurizer raw materials at the corner of the delivery pipe 10.

[0033] A transmission plate 12 is fixed to the lower output end of the motor 8, a driving plate 15 is movably provided at the end of the transmission plate 12, a supporting collar 17 is movably provided on the surface of the driving plate 15, a supporting column 13 is movably provided on the inner wall of the supporting collar 17, a stirring blade 7 is movably provided at the lower end of the supporting column 13, the stirring blade 7 stirs the desulfurizer raw material preheated in the preheating bin 6 so that the raw material can be preheated evenly, and the stirring blade 7 that alternately moves in a counterclockwise and clockwise arc and can rotate can stir the raw materials of the upper and lower layers at the same time to make them evenly distributed, thereby improving the preheating efficiency.

[0034] On the basis of Example 1, in order to prevent the desulfurizer raw material from being blocked at the corner of the feed pipe 1, a heating bin 5 and a preheating bin 6 are provided inside the preheating furnace body 4, a transmission gear block 26 and a support ring 28 are fixed to the inner wall of the preheating bin 6, a ball groove 27 is provided inside the support ring 28, a corner tube 10 is fixed at one end of the feed pipe 1, and the corner tube 10 is movably connected to the connecting tube 11.

[0035] A guide rod 22 is movably inserted into the inner wall of the corner tube 10, a serrated disk 24 is fixed at one end of the guide rod 22, and a bevel gear 23 is fixed at the other end of the guide rod 22. The serrated disk 24 is located inside the corner tube 10. When the desulfurizer raw material powder passes through the corner tube 10 and its fluidity is reduced and agglomerates, the rotation of the serrated disk 24 will break up the agglomerated raw materials and increase their fluidity, so that they can quickly pass through the corner tube 10 into the preheating bin 6, thereby preventing the desulfurizer raw material from being blocked at the corner of the feed pipe 10. The bevel gear 23 is located outside the corner tube 10.

[0036] A fixing ring 21 is fixed to the outer surface of the upper end of the connecting tube 11, and a tooth block 25 is fixed to the upper surface of the fixing ring 21. The tooth block 25 corresponds to and is clamped with the bevel gear 23 to be movably connected. Due to the matching of the tooth grooves, the tooth block 25 matches with the bevel gear 23, so the rotation of the fixing ring 21 will drive the bevel gear 23 to rotate. Since the guide rod 22 is movably inserted in the corner tube 10, the rotation of the bevel gear 23 will drive the serrated disk 24 to rotate inside the corner tube 10 through the guide rod 22.

[0037] A transmission belt 9 is movably sleeved on the outer surface of the lower end of the connecting pipe 11, and the other end of the transmission belt 9 is movably sleeved on the outer surface of the output end of the motor 8. When the motor 8 is started, the connecting pipe 11 will be driven to rotate through the transmission belt 9. The motor 8 is fixed to the upper surface of the top cover 3.

[0038] A connecting rod 19 is fixed to the upper surface of one end of the driving plate 15, and the connecting rod 19 is movably inserted into the end of the transmission plate 12. The lower surface of the driving plate 15 does not contact the upper surface of the top cover 3. When the motor 8 is started, it will drive the transmission plate 12 to rotate through the lower output end. Since the end of the driving plate 15 is movably connected to the transmission plate 12, the end of the transmission plate 12 will pull the driving plate 15 to move back and forth regularly when making a circular motion around the axis of the motor 8.

[0039] A tooth groove 20 is provided on one side surface of the driving plate 15, and a support bracket 16 is movably provided on the upper surface of the driving plate 15. A support ring 17 is fixed to the end of the support bracket 16, and the support ring 17 is movably connected to the support rod 18, which activates the positioning function of the driving plate 15 to prevent the driving plate 15 from being offset when moving, and also prevents the tooth groove 20 from separating from the gear 14.

[0040] The support column 13 is movably inserted in the top cover 3, a gear 14 is fixed on the upper end of the support column 13, a support rod 18 is fixed on the upper surface of the gear 14, a rotating rod 29 is movably provided on the lower end of the support column 13, a movable bevel gear 30 is fixed on one end of the rotating rod 29, a stirring blade 7 is fixed on the other end of the rotating rod 29, a universal ball 31 is fixed on the outer surface of the rotating rod 29, the stirring blade 7 stirs the desulfurizer raw material preheated in the preheating bin 6, so that the raw material can be preheated evenly, and the stirring blade 7 that alternately moves counterclockwise and clockwise in an arc and can rotate can also stir the raw materials of the upper and lower layers at the same time to make them evenly distributed, thereby improving the preheating efficiency.

[0041] The movable bevel gear 30 corresponds to and is clamped with the transmission gear block 26, the universal ball 31 corresponds to and is movably clamped with the ball groove 27, the support collar 17 corresponds to and is clamped with the support rod 18, and the two are movably connected, the gear 14 corresponds to and is clamped with the tooth groove 20, and the two are movably connected. Since the tooth groove 20 opened on the side surface of the driving plate 15 is clamped with the gear 14, the driving plate 15 moves back and forth, which will drive the support column 13 to rotate regularly and alternately counterclockwise and clockwise through the gear 14.

[0042] The present invention also discloses a method for preparing a preheating device for a desulfurizing agent preparation roasting furnace, comprising the following steps:

[0043] Step 1: Anti-blocking. When the motor 8 is started, it will drive the connecting pipe 11 to rotate through the transmission belt 9. The rotation of the connecting pipe 11 will drive the fixed ring 21 to rotate. Due to the matching of the tooth grooves, the tooth block 25 matches the bevel gear 23, so the rotation of the fixed ring 21 will drive the bevel gear 23 to rotate. Since the guide rod 22 is movably inserted into the corner tube 10, the rotation of the bevel gear 23 will drive the sawtooth disk 24 to rotate inside the corner tube 10 through the guide rod 22. When the fluidity of the desulfurizer raw material powder is reduced and agglomerated through the corner tube 10, the rotation of the sawtooth disk 24 will break up the agglomerated raw materials and increase their fluidity, so that they can quickly pass through the corner tube 10 into the preheating bin 6, thereby realizing the anti-blocking of the desulfurizer raw material at the corner of the feed pipe 10;

[0044] Step 2: Stirring. When the motor 8 is started, it will drive the transmission plate 12 to rotate through the lower output end. Since the end of the driving plate 15 is movably connected to the transmission plate 12, the end of the transmission plate 12 will pull the driving plate 15 to move back and forth regularly when it makes an arc motion around the axis of the motor 8. Moreover, since the tooth groove 20 provided on the side surface of the driving plate 15 is correspondingly arranged with the gear 14, the back and forth movement of the driving plate 15 will drive the support column 13 to rotate regularly alternately counterclockwise and clockwise through the gear 14. The supporting collar 17 is movably connected with the support rod 18 and the driving plate 15, which starts the positioning effect on the driving plate 15 to prevent the driving plate 15 from deflecting when moving, and also to prevent the tooth groove 20 from separating from the gear 14. The alternating counterclockwise and clockwise rotation of the support column 13 will drive the rotating rod 29 at the lower end of the support column 13 to rotate alternately counterclockwise and clockwise with the universal ball 31 as the axis. Since the upper end of the rotating rod 29 makes an arc motion with the support column 13 as the axis, and the movable bevel gear 30 and the transmission gear block 26 are clamped, the rotating rod 29 will rotate when making the arc motion, thereby driving the stirring blade 7 to rotate when making the arc motion. The stirring blade 7 stirs the desulfurizer raw material preheated in the preheating bin 6 so that the raw material can be preheated evenly. At the same time, the stirring blade 7 that alternately moves counterclockwise and clockwise in an arc and can rotate can also stir the raw materials of the upper and lower layers at the same time to make them evenly distributed, thereby improving the preheating efficiency.

[0045] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A preheating device for a desulfurizing agent preparation roasting furnace, characterized in that: include: A preheating furnace body (4), wherein a top cover (3) is fixed on the upper end of the preheating furnace body (4), a feed pipe (2) is fixedly inserted into the top cover (3), a connecting pipe (11) is movably provided at the end of the feed pipe (2), a feed pipe (1) is fixed at the end of the connecting pipe (11), and a sawtooth disk (24) is movably provided inside the feed pipe (1); A motor (8) is provided, wherein a transmission plate (12) is fixed at the lower output end of the motor (8), a driving plate (15) is movably provided at the end of the transmission plate (12), a supporting collar (17) is movably provided on the surface of the driving plate (15), a supporting column (13) is movably provided on the inner wall of the supporting collar (17), and a stirring blade (7) is movably provided at the lower end of the supporting column (13).

2. A preheating device for a desulfurizing agent preparation roasting furnace according to claim 1, characterized in that: A heating chamber (5) and a preheating chamber (6) are provided inside the preheating furnace body (4); a transmission gear block (26) and a support ring (28) are fixed on the inner wall of the preheating chamber (6); a ball groove (27) is provided inside the support ring (28); a corner tube (10) is fixed at one end of the feed pipe (1); and the corner tube (10) is movably connected to the connecting pipe (11).

3. A preheating device for a desulfurizing agent preparation roasting furnace according to claim 2, characterized in that: A guide rod (22) is movably inserted into the inner wall of the corner tube (10); a sawtooth disk (24) is fixed to one end of the guide rod (22); a bevel gear (23) is fixed to the other end of the guide rod (22); the sawtooth disk (24) is located inside the corner tube (10), and the bevel gear (23) is located outside the corner tube (10).

4. A preheating device for a desulfurizing agent preparation roasting furnace according to claim 3, characterized in that: A fixing ring (21) is fixed on the outer surface of the upper end of the connecting pipe (11), and a gear block (25) is fixed on the upper surface of the fixing ring (21). The gear block (25) corresponds to and is clamped with the bevel gear (23) to be movably connected.

5. The preheating device for a desulfurizing agent preparation roasting furnace according to claim 4, characterized in that: The connecting pipe (11) is movably sleeved with a transmission belt (9) on the outer surface of the lower end, and the other end of the transmission belt (9) is movably sleeved on the outer surface of the output end of the motor (8), and the motor (8) is fixed to the upper surface of the top cover (3).

6. A preheating device for a desulfurizing agent preparation roasting furnace according to claim 5, characterized in that: A connecting rod (19) is fixed on the upper surface of one end of the driving plate (15), and the connecting rod (19) is movably inserted into the end of the transmission plate (12). The lower surface of the driving plate (15) does not contact the upper surface of the top cover (3).

7. A preheating device for a desulfurizing agent preparation roasting furnace according to claim 6, characterized in that: A tooth groove (20) is provided on one side surface of the driving plate (15), a support bracket (16) is movably provided on the upper surface of the driving plate (15), and the support collar (17) is fixed to the end of the support bracket (16).

8. A preheating device for a desulfurizing agent preparation roasting furnace according to claim 7, characterized in that: The support column (13) is movably inserted into the top cover (3); a gear (14) is fixed to the upper end of the support column (13); a support rod (18) is fixed to the upper surface of the gear (14); a rotating rod (29) is movably provided at the lower end of the support column (13); a movable bevel gear (30) is fixed to one end of the rotating rod (29); a stirring blade (7) is fixed to the other end of the rotating rod (29); and a universal ball (31) is fixed to the outer surface of the rotating rod (29).

9. A preheating device for a desulfurizing agent preparation roasting furnace according to claim 8, characterized in that: The movable bevel gear (30) corresponds to and is clamped on the transmission gear block (26); the universal ball (31) corresponds to and is movably clamped on the ball groove (27); the support collar (17) corresponds to and is clamped on the support rod (18), and the two are movably connected; the gear (14) corresponds to and is clamped on the tooth groove (20), and the two are movably connected.

10. A method for preparing a preheating device for a desulfurizing agent preparation roasting furnace according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Anti-blocking: When the motor (8) is started, it will drive the connecting pipe (11) to rotate through the transmission belt (9), and the rotation of the connecting pipe (11) will drive the fixed ring (21) to rotate. Due to the matching of the tooth grooves, the tooth block (25) and the bevel gear (23) are matched, so the rotation of the fixed ring (21) will drive the bevel gear (23) to rotate. Since the guide rod (22) is movably inserted into the corner tube (10), the rotation of the bevel gear (23) will drive the sawtooth disk (24) to rotate inside the corner tube (10) through the guide rod (22). When the fluidity of the desulfurizer raw material powder is reduced and it aggregates in the corner tube (10), the rotation of the sawtooth disk (24) will break up the aggregated raw material, increase its fluidity, so that it can quickly pass through the corner tube (10) into the preheating bin (6), thereby achieving the anti-blocking of the desulfurizer raw material at the corner of the feed pipe (10); Step 2: Stirring. When the motor (8) is started, it drives the transmission plate (12) to rotate through the lower output end. Since the end of the driving plate (15) is movably connected to the transmission plate (12), the end of the transmission plate (12) will pull the driving plate (15) to move back and forth regularly when it moves in an arc around the axis of the motor (8). Since the tooth groove (20) provided on the side surface of the driving plate (15) is correspondingly arranged with the gear (14), the back and forth movement of the driving plate (15) will drive the support column (13) to rotate counterclockwise and clockwise regularly through the gear (14). The support collar (17) is movably connected to the support rod (18) and the driving plate (15), and the positioning effect is started on the driving plate (15), so as to prevent the driving plate (15) from being offset when moving, and also to prevent the tooth groove (20) from being aligned with the gear (14). 14) separation, the support column (13) rotates counterclockwise and clockwise alternately, which drives the rotating rod (29) at the lower end of the support column (13) to rotate counterclockwise and clockwise alternately with the universal ball (31) as the axis. Since the upper end of the rotating rod (29) makes an arc motion with the support column (13) as the axis, and the movable bevel gear (30) and the transmission gear block (26) are locked, the rotating rod (29) will rotate when making the arc motion, thereby driving the stirring blade (7) to rotate when making the arc motion. The stirring blade (7) stirs the desulfurization agent raw material preheated in the preheating bin (6) so that the raw material can be preheated evenly. At the same time, the stirring blade (7) that alternates counterclockwise and clockwise arc motion and can rotate can also stir the raw materials of the upper and lower layers at the same time to make them evenly distributed, thereby improving the preheating efficiency.

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