Double-shaft stirrer for waste sulfuric acid treatment

Abstract

The invention provides a double-shaft stirrer for waste sulfuric acid treatment, the double-shaft stirrer comprises a cylinder body, stirring pieces, pushing wheels, a driving piece, a heat dissipation piece and an exhaust piece, the stirring pieces are oppositely arranged in the cylinder body and used for stirring materials, the pushing wheels are arranged in pairs and oppositely distributed at the two ends of the stirring pieces, and the driving piece is used for driving the pushing wheels to rotate. The outer edge of the material pushing wheel is in contact with the inner wall of the barrel, the material pushing wheel is used for pushing materials to one side and enabling a stirring area space to be in a relatively sealed state, and the driving part is arranged at the end of the barrel and used for driving the stirring part and the material pushing wheel to rotate. The heat dissipation piece covers the outer side of the middle of the barrel and is used for cooling, and the exhaust piece is arranged at the top in the barrel and is used for exhausting gas produced by reaction. The stirring blades capable of stirring and pushing materials to advance are matched with the material pushing wheels for relay discharging, so that the technical effects of ensuring the working efficiency and reducing the working intensity are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of mixing equipment for sulfuric acid purification process, in particular to a double-shaft stirrer for treating waste sulfuric acid. Background Art

[0002] Spent sulfuric acid treatment primarily involves processes such as concentration, high-temperature cracking, chemical oxidation, medium-temperature carbonization, and neutralization. This process, centered around waste sulfuric acid regeneration, aims to build a circular economy within the eco-industry chain. Neutralization, for example, uses alkaline substances to neutralize the waste sulfuric acid, such as mixing it with limestone powder. This method effectively neutralizes the acidity of the waste sulfuric acid, generating recyclable carbon dioxide and calcium carbonate.

[0003] During the neutralization reaction of the above two, if natural diffusion is relied upon, the neutralization rate will drop significantly. Some substances produced during the reaction, such as calcium sulfate, which is slightly soluble in water, may form a passivation layer covering the surface of the limestone particles, thereby stagnating the reaction. Therefore, an agitator is needed to assist the neutralization reaction. Existing agitators of this type generally set up a reactor, place the waste sulfuric acid and alkaline material in the reactor, set up stirring blades in the reactor, and use a motor to drive the stirring blades to stir the waste sulfuric acid and alkaline material. After the reaction is completed, the reaction products in the reactor are discharged.

[0004] However, although the existing agitator can achieve the stirring effect, it is unable to perform the continuous action of feeding, stirring and mixing, and discharging. It is necessary to wait until the materials in the kettle are mixed and discharged before adding materials again for mixing, which not only reduces the overall operating efficiency, but also increases the workload of the staff. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a double-shaft agitator for treating waste sulfuric acid, which solves the problems in the prior art of decreased operating efficiency and increased work intensity due to staged operations.

[0006] According to an embodiment of the present invention, a twin-shaft agitator for treating waste sulfuric acid includes a cylinder, a stirring member, a pusher wheel, a driving member, a heat sink and an exhaust member. The stirring member is relatively arranged in the cylinder and is used to stir the material. The pusher wheels are arranged in pairs and are relatively distributed at both ends of the stirring member. The outer edge of the pusher wheel contacts the inner wall of the cylinder. The pusher wheel is used to push the material to one side and make the stirring area space form a relatively sealed state. The driving member is arranged at the end of the cylinder and is used to drive the stirring member and the pusher wheel to rotate. The heat sink covers the outside of the middle part of the cylinder and is used for cooling. The exhaust member is arranged at the top of the cylinder and is used to discharge the gas produced by the reaction.

[0007] In the above embodiment, a cylinder is provided, the material to be mixed is placed in the cylinder, the driving member is started, and the driving member drives the stirring member to rotate to stir the material. At the same time, the pusher wheels located at both ends of the stirring member rotate together, and the space between the two pusher wheels forms a relative seal, which is used to limit the flow of liquid material and ensure the mixing effect of the solid-liquid phase. At the same time, the stirring blades of the stirring member can push the material while stirring, and can relay with the pusher wheel to discharge the material, thereby achieving the purpose of continuous operation.

[0008] In some embodiments, the cylinder is arranged horizontally, and a feed pipe and a discharge pipe are respectively provided on the top side and the bottom side of the cylinder, and the stirring member and the push wheel are both arranged parallel to the cylinder.

[0009] In some embodiments, the stirring member further includes a pair of rotating shafts extending from one end of the cylinder to the other end, and a plurality of stirring blades are fixedly distributed on the outer sides of the middle portions of the two rotating shafts, and the stirring blades extend away from one end of the rotating shaft in a curved surface.

[0010] In some embodiments, the pair of pusher wheels are respectively disposed on the outside of both ends of the rotating shaft, and the outer edges of the two pusher wheels located on the same side of the outside of different rotating shafts extend to the inner side of each other's spiral interval.

[0011] In some embodiments, the driving member includes a motor mounted on the end side of the cylinder and two meshing gears fixedly disposed on the ends of the two rotating shafts away from the motor.

[0012] In some embodiments, the heat dissipation element includes a covering sleeve mounted on the outer side of the middle part of the cylinder and a plurality of separators equidistantly distributed in the covering sleeve. A connecting plate is fixedly connected between each two adjacent separators on the same side, and notches are relatively opened at the connection points between the two separators and the two ends of the connecting plates.

[0013] In some embodiments, a water inlet pipe and a water outlet pipe are relatively connected to the outside of the covering sleeve.

[0014] In some embodiments, the exhaust component includes an exhaust pipe extending from one end of the cylinder to the interior thereof and air holes uniformly opened on the outside of the exhaust pipe.

[0015] In some embodiments, recesses are formed on both sides of the exhaust duct to avoid the pusher wheel.

[0016] In some embodiments, a shock-absorbing base is provided at the bottom of the cylinder.

[0017] Compared with the existing technology, the present invention has the following beneficial effects: by adopting a stirring blade that can stir and push the material forward in combination with a push wheel to relay the discharge, it solves the technical problem that the existing mixing device has a reduced operating efficiency and increased work intensity due to the staged operation, thereby achieving the technical effect of ensuring operating efficiency and reducing work intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0019] Figure 2 Schematic diagram of the internal structure of an embodiment of the present invention;

[0020] Figure 3 for Figure 2 A schematic diagram of the front structure of FIG.

[0021] Figure 4 for Figure 3 Schematic diagram of the structure of the exhaust pipe;

[0022] Figure 5 for Figure 3 Schematic diagram of the structure of the stirring member and the pusher wheel;

[0023] Figure 6 for Figure 1 Schematic diagram of the installation position relationship of the separator.

[0024] Figure 7 for Figure 1 Schematic diagram of the structure of the heat sink.

[0025] In the above drawings: 100, cylinder; 110, feed pipe; 120, discharge pipe; 200, stirring member; 210, stirring blade; 220, rotating shaft; 300, push wheel; 400, driving member; 410, motor; 420, gear; 500, heat sink; 510, covering sleeve; 520, separator; 530, connecting piece; 540, notch; 550, water inlet pipe; 560, water outlet pipe; 600, exhaust member; 610, exhaust pipe; 620, air hole; 630, depression; 700, shock-absorbing base. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] In an exemplary embodiment, Figure 1-Figure 7 As shown, this embodiment provides a double-shaft agitator for treating waste sulfuric acid, including a cylinder 100, a stirring member 200, a pusher wheel 300, a driving member 400, a heat dissipation member 500 and an exhaust member 600. The stirring member 200 is relatively arranged in the cylinder 100 and is used to stir the material. The pusher wheels 300 are arranged in pairs and are relatively distributed at both ends of the stirring member 200. The outer edge of the pusher wheel 300 contacts the inner wall of the cylinder 100. The pusher wheel 300 is used to push the material to one side and make the stirring area space form a relatively sealed state. The driving member 400 is arranged at the end of the cylinder 100 and is used to drive the stirring member 200 and the pusher wheel 300 to rotate. The heat dissipation member 500 covers the outer side of the middle part of the cylinder 100 and is used for cooling. The exhaust member 600 is arranged at the top of the cylinder 100 and is used to discharge the gas produced by the reaction.

[0029] In this embodiment, a cylinder 100 is provided, and the material to be mixed is placed in the cylinder 100, and the driving member 400 is started. The driving member 400 drives the stirring member 200 to rotate to stir the material. At the same time, the pushing wheels 300 located at both ends of the stirring member 200 rotate together, and the space between the two pushing wheels 300 forms a relative seal, which is used to limit the flow of liquid material and ensure the mixing effect of the solid-liquid phase. At the same time, the stirring blades 210 of the stirring member 200 can push the material while stirring, and can relay with the pushing wheel 300 to discharge the material, thereby achieving the purpose of continuous operation.

[0030] In one embodiment, see Figure 1-Figure 2 The cylinder 100 is arranged horizontally, and a feed pipe 110 and a discharge pipe 120 are respectively provided on the top side and the bottom side of the cylinder 100, and the stirring member 200 and the push wheel 300 are both arranged parallel to the cylinder 100.

[0031] In this embodiment, the feed pipe 110 and the discharge pipe 120 are both connected by flanges, and a liquid feed port is provided on one side of the feed pipe 110 .

[0032] In one embodiment, see Figure 1-Figure 3 and Figure 5 The stirring member 200 further includes a pair of rotating shafts 220 extending from one end of the cylinder 100 to the other end, and a plurality of stirring blades 210 are fixedly distributed on the outer sides of the middle portions of the two rotating shafts 220 .

[0033] In this embodiment, the installation angle of the stirring blade 210 can be set according to actual use needs, and the ultimate goal is to improve the axial flow force in the cylinder 100.

[0034] In one embodiment, see Figure 2 、 Figure 3 and Figure 5 The paired pusher wheels 300 are respectively arranged on the outside of both ends of the rotating shaft 220, and the outer edges of the two pusher wheels 300 located on the same side of the outside of different rotating shafts 220 extend to the inner side of the spiral interval of each other.

[0035] In this embodiment, the pusher wheel 300 can be selected to be auger-shaped, which can push the material to one side. The paired pusher wheels 300 can be used to limit the flow of liquid material and ensure the mixing effect of solid material and liquid material under the stirring of the stirring blade 210.

[0036] In one embodiment, see Figure 1-Figure 3 The driving member 400 includes a motor 410 mounted on the end side of the cylinder 100 and two meshing gears 420 fixedly disposed on the ends of the two rotating shafts 220 away from the motor 410 .

[0037] In this embodiment, the motor 410 drives one of the rotating shafts 220 to rotate, and the other end of the rotating shaft 220 drives the other rotating shaft 220 to rotate through the engagement of the gear 420, thereby achieving the two rotating shafts 220 rotating towards each other.

[0038] In one embodiment, see Figure 1-Figure 3 、 Figure 6 and Figure 7 The heat dissipation element 500 includes a covering sleeve 510 that is sleeved on the outer side of the middle part of the cylinder 100 and a plurality of separators 520 that are evenly distributed in the covering sleeve 510. A connecting piece 530 is fixedly connected between each two adjacent separators 520 on the same side, and a notch 540 is relatively opened at the connection between the two separators 520 and the two ends of the connecting piece 530.

[0039] In this embodiment, a number of separators 520 are evenly distributed on the outside of the cylinder 100 to act as heat sinks. At the same time, the covering sleeve 510 is wrapped around the separator 520 to form an independent cavity between two adjacent separators 520, and a notch 540 is opened on one side of the adjacent separator 520. The notch 540 is not on the same horizontal line, and then the bottom of one of the notches 540 and the top of the other notch 540 are connected by a connecting piece 530, so that the cavity is separated and a travel channel with the longest path is provided.

[0040] Furthermore, a water inlet pipe 550 and a water outlet pipe 560 are relatively connected to the outside of the covering sleeve 510 , and cooling water is introduced into the cavity through the water inlet pipe 550 , and the cooling water passes through the channel until it is discharged through the water outlet pipe 560 .

[0041] In one embodiment, see Figure 1-Figure 4 The exhaust member 600 includes an exhaust duct 610 extending from one end of the cylinder 100 to the interior thereof and air holes 620 uniformly formed on the exterior of the exhaust duct 610. Concavities 630 are formed on both sides of the exhaust duct 610 to avoid the pusher wheel 300.

[0042] In this embodiment, the exhaust pipe 610 needs to be connected to an air pump device, and the gas generated by the reaction in the cylinder 100 is sucked into the exhaust pipe 610 through a plurality of air holes 620, thereby effectively preventing the gas from escaping.

[0043] In one embodiment, see Figure 1 A shock-absorbing base 700 is provided at the bottom of the cylinder 100 .

[0044] In order to better understand the present invention, the following Figures 1 to 7 The technical solution of the present invention is described in detail: when in use, the feed pipe 110 is connected to the material conveying mechanism, and the material enters the cylinder 100, and the motor 410 is started. The motor 410 drives one of the rotating shafts 220 to rotate, and the other end of the rotating shaft 220 drives the other rotating shaft 220 to rotate through the engagement of the gear 420, thereby realizing the opposite rotation of the two rotating shafts 220. The rotation of the two rotating shafts 220 can drive the stirring blade 210 to stir, and at the same time, the pushing wheel 300 also starts to rotate to push the material.

[0045] Furthermore, the material first contacts the push wheel 300 on one end of the rotating shaft 220, and the push wheel 300 pushes the material to the rotating area of the stirring blade 210. Since the stirring blade 210 has a certain installation angle, it can provide the material with axial flow force along the cylinder 100 while stirring the material, so that the material contacts the push wheel 300 on the other end of the rotating shaft 220, thereby achieving the purpose of continuous operation.

[0046] In summary, the present invention solves the technical problems of decreased operating efficiency and increased work intensity caused by the staged operation of the existing mixing device by adopting a stirring blade 210 that can stir and push the material forward in conjunction with a push wheel 300 to discharge the material in relay, thereby achieving the technical effect of ensuring operating efficiency and reducing work intensity.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A twin-shaft agitator for treating waste sulfuric acid, characterized in that: include: Cylinder (100); A stirring member (200), the stirring member (200) being arranged relative to the barrel (100), and the stirring member (200) comprising a plurality of stirring blades (210) extending outward relative to a horizontal line and forming a curved surface, the stirring blades (210) being used to stir the material and provide axial flow force within the barrel (100); Pusher wheels (300), the pusher wheels (300) are arranged in pairs and relatively distributed at the two ends of the stirring member (200), the outer edges of the pusher wheels (300) are in contact with the inner wall of the cylinder (100), and the pusher wheels (300) are used to push the material to one side and make the stirring area space form a relatively sealed state; A driving member (400), the driving member (400) being provided at the end of the cylinder (100) and being used for driving the stirring member (200) and the pushing wheel (300) to rotate; a heat sink (500), the heat sink (500) covering the outer side of the middle portion of the cylinder (100) and used for cooling; An exhaust member (600) is provided at the top of the cylinder (100) and is used to exhaust the gas produced by the reaction.

2. The twin-shaft agitator for treating waste sulfuric acid according to claim 1, wherein: The cylinder (100) is arranged horizontally, and a feed pipe (110) and a discharge pipe (120) are respectively provided on the top side and the bottom side of the cylinder (100), and the stirring member (200) and the pushing wheel (300) are both arranged parallel to the cylinder (100).

3. The twin-shaft agitator for treating waste sulfuric acid according to claim 1, wherein: The stirring member (200) further comprises a pair of rotating shafts (220) extending from one end of the cylinder (100) to the other end, and a plurality of stirring blades (210) are fixedly distributed on the outer sides of the middle portions of the two rotating shafts (220).

4. The twin-shaft agitator for treating waste sulfuric acid according to claim 3, wherein: The paired pusher wheels (300) are respectively arranged outside the two ends of the rotating shaft (220), and the outer edges of the two pusher wheels (300) located on the same side outside different rotating shafts (220) extend to the inner side of the spiral interval of each other.

5. The double-shaft agitator for treating waste sulfuric acid according to claim 3, wherein: The driving member (400) comprises a motor (410) mounted on the end side of the cylinder (100) and two meshing gears (420) respectively fixedly arranged on one end of the two rotating shafts (220) away from the motor (410).

6. The twin-shaft agitator for treating waste sulfuric acid according to claim 1, wherein: The heat dissipation element (500) comprises a covering sleeve (510) sleeved on the outer side of the middle portion of the cylinder (100) and a plurality of separators (520) equidistantly distributed within the covering sleeve (510), a connecting sheet (530) being fixedly connected between each two adjacent separators (520) on the same side, and notches (540) being provided at the connection points between the two separators (520) and the two ends of the connecting sheet (530).

7. The twin-shaft agitator for treating waste sulfuric acid according to claim 6, wherein: The outside of the covering sleeve (510) is relatively connected to a water inlet pipe (550) and a water outlet pipe (560).

8. The twin-shaft agitator for treating waste sulfuric acid according to claim 1, wherein: The exhaust member (600) comprises an exhaust pipe (610) extending from one end of the cylinder (100) to the interior thereof, and air holes (620) uniformly arranged on the outside of the exhaust pipe (610).

9. The double-shaft agitator for treating waste sulfuric acid according to claim 8, wherein: Concavities (630) for avoiding the pusher wheel (300) are formed on both sides of the exhaust duct (610).

10. The double-shaft agitator for treating waste sulfuric acid according to claim 1, wherein: A shock-absorbing base (700) is provided at the bottom of the cylinder (100).

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