Ingredient mixing and stirring device for furfural processing

Abstract

The invention discloses an ingredient mixing and stirring device for furfural processing, and relates to the technical field of furfural production. The stirring device comprises a stirring box, the stirring box comprises a stirring part located in the center and further comprises a plurality of extending parts evenly distributed around the stirring part, and the extending parts communicate with the stirring part; the stirring part is rotationally provided with a material pushing plate, and the material pushing plate is attached to the inner bottom surface of the stirring part; and a material collecting plate is rotationally arranged in the extension part and located at the junction of the extension part and the stirring part. A material pushing plate rotating in the horizontal plane is arranged in the stirring box, a material collecting plate rotating in the vertical plane is arranged on the periphery of the material pushing plate, materials stirred by the material pushing plate rotate and are mixed in the horizontal plane, and an upward movement track can be formed through vertical rotating type pushing of the material collecting plate; therefore, when the mixed materials are collected around the material pushing plate again, mixing in the vertical direction is formed, and the mixing efficiency and the mixing uniformity of the raw materials and the catalyst during furfural production are improved.

Description

Technical Field

[0001] The invention relates to the technical field of furfural production, in particular to a batching mixing and stirring device for furfural processing. Background Art

[0002] Furfural, chemically known as α-furfurylaldehyde, is an organic compound. Its molecular structure contains a furan ring and an aldehyde group. The furan ring is a five-membered heterocyclic ring consisting of four carbon atoms and one oxygen atom. The aldehyde group (-CHO) is connected to the α position of the furan ring. This structure gives furfural some special chemical properties.

[0003] Furfural is mainly produced by hydrolysis of plant materials. Corn cobs, bagasse, rice husks and other plant fibers rich in polypentoses are used as raw materials. These raw materials are first hydrolyzed under the catalysis of dilute acid (such as sulfuric acid), and polypentoses are hydrolyzed into pentoses. Then the pentoses are further dehydrated at high temperature (about 160-190°C) to produce furfural. For example, corn cobs have a high content of polypentoses. Under the catalysis of sulfuric acid, furfural is finally obtained after a series of complex reaction steps such as subsequent extraction.

[0004] When the raw materials and the catalyst (such as sulfuric acid) are mixed, a stirring device is required to stir and mix the raw materials and the catalyst (such as sulfuric acid). However, the common stirring devices in the prior art usually use simple stirring blades to rotate and stir. This stirring method can only make the raw materials and the catalyst mix in the horizontal space when being stirred. There is no obvious mixing and circulation of the raw materials and the catalyst in the vertical direction, resulting in uneven stirring, low stirring effect and efficiency. Summary of the invention

[0005] The object of the present invention is to provide a mixing and stirring device for furfural processing, wherein a pushing plate rotating in a horizontal plane is arranged in a mixing box, and a collecting plate rotating in a vertical plane is arranged around the pushing plate. The pushing plate stirs the materials to rotate and mix in the horizontal plane. In the process of the collecting plate collecting the mixed raw materials, the vertical rotation of the collecting plate will form an upward motion trajectory, so that the mixed materials are re-collected around the pushing plate to form a vertical mixing. The mixed materials are mixed three-dimensionally in the horizontal and vertical directions, which greatly increases the mixing efficiency and mixing uniformity of the raw materials and the catalyst during furfural production.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mixing and stirring device for furfural processing, comprising a stirring box, the stirring box comprising a stirring part located in the center, and also comprising a plurality of extension parts evenly arranged around the stirring part, wherein the plurality of extension parts are connected to the stirring part; a pushing plate is rotatably provided on the stirring part, and the pushing plate is attached to the bottom surface of the stirring part; a collecting plate is rotatably provided inside the extension part and at the junction of the extension part and the stirring part; It also includes a driving device for driving the pushing plate and the collecting plate to rotate.

[0007] Preferably, the mixing box is supported off the ground by a support frame, a plate seat is provided on the top of the support frame, and the push plate is rotatably disposed on the plate seat.

[0008] Preferably, the push plate is rotatably arranged on the plate seat via a vertical axis.

[0009] Preferably, the collecting plate is arranged in the extension portion by rotating about a transverse axis.

[0010] Preferably, the driving device includes a driving motor and a reducer matched with the driving motor, the reducer and the vertical shaft are connected via a sprocket set; the reducer and the horizontal shaft are connected via a sprocket set and a steering transmission member.

[0011] Preferably, a driving sprocket is cooperatively connected to the power output shaft of the reducer, a first driven sprocket corresponding to the driving sprocket is arranged on the vertical shaft, and the driving sprocket and the first driven sprocket are cooperatively connected via a chain.

[0012] Preferably, the steering transmission component includes a transmission shaft, which is rotatably set on the plate seat, and a third shaft seat vertically corresponding to the transmission shaft is set on the plate seat. The top end of the transmission shaft is cooperatively connected with the third shaft seat, and the bottom end of the transmission shaft is cooperatively connected with the corresponding horizontal axis through a bevel gear.

[0013] Preferably, the push plate is configured as an arc-shaped structure.

[0014] Preferably, the bottom wall of the extension portion is configured as an arc-shaped structure, the axis of the arc-shaped bottom wall coincides with the axis of the horizontal axis, and the suspended end of the collecting plate fits with the arc-shaped bottom wall during rotation.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, a pushing plate rotating in a horizontal plane is arranged in the mixing box, and a collecting plate rotating in a vertical plane is arranged around the pushing plate. The pushing plate stirs the materials to rotate and mix in the horizontal plane. In the process of the collecting plate collecting the mixed raw materials, the vertical rotating push of the collecting plate will form an upward motion trajectory, so that the mixed materials are re-collected around the pushing plate to form a vertical mixing. The mixed materials are mixed three-dimensionally in the horizontal and vertical directions, which greatly increases the mixing efficiency and mixing uniformity of the raw materials and the catalyst during the production of furfural.

[0016] 2. In the present invention, the rotation of the push plate and the collecting plate is realized by the same driving device. Under the premise of achieving cost savings, a variety of stirring and mixing actions are combined to carry out multi-directional and multi-angle high-efficiency mixing of raw materials and catalysts, thereby indirectly increasing the production efficiency of furfural. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 The internal structure of the present invention is shown in FIG. Figure 1 (The aggregate plate is located at the junction of the mixing section and the extension section); Figure 3 The internal structure of the present invention is shown in FIG. Figure 2 (The aggregate plate is inside the extension); Figure 4 The internal structure of the present invention is shown in FIG. Figure 3 (The aggregate plate is in the mixing section); Figure 5 A top view of the present invention; Figure 6 This is a diagram showing the arrangement of the sealing cover of the present invention; Figure 7 It is a planar structural diagram of the push plate of the present invention.

[0018] In the figure: 11- stirring part, 12- extension part, 13- sealing cover, 2-Push plate, 21-Vertical axis, 3-aggregate plate, 31-horizontal axis, 41-driving motor, 42-reducer, 43-driving sprocket, 44-first driven sprocket, 45-second driven sprocket, 46-chain, 47-bevel gear, 48-transmission shaft, 51-first axle seat, 52-second axle seat, 53-third axle seat, 61-support frame, 62-plate base. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0020] like Figures 1 to 7 As shown, a mixing and stirring device for furfural processing includes a mixing box, which includes a mixing portion 11 located in the center, and also includes a plurality of extension portions 12 evenly arranged around the mixing portion 11, and the plurality of extension portions 12 are connected to the mixing portion 11; the mixing portion 11 is rotatably provided with a push plate 2, and the push plate 2 is attached to the bottom surface of the mixing portion 11; a collecting plate 3 is rotatably provided in the extension portion 12 and at the junction of the extension portion 12 and the mixing portion 11.

[0021] Specifically in this embodiment, the mixing box is supported off the ground by a support frame 61. Specifically, the support frame 61 is fixed on the outer wall of the extension portion 12. The support frame 61 extends to the top of the mixing box. A plate seat 62 is provided on the top of the support frame 61, and the push plate 2 is rotatably provided on the plate seat 62.

[0022] The push plate 2 is rotatably disposed on the plate seat 62 via a vertical axis 21 . A first axis seat 51 vertically corresponding to the vertical axis 21 is disposed on the plate seat 62 . The top end of the vertical axis 21 is cooperatively connected with the first axis seat 51 .

[0023] The collecting plate 3 is rotatably disposed in the extension portion 12 via a transverse axis 31 . A second shaft seat 52 horizontally corresponding to the transverse axis 31 is disposed on the side wall of the extension portion 12 . The transverse axis 31 is cooperatively connected with the second shaft seat 52 .

[0024] It also includes a driving device for driving the push plate 2 and the collecting plate 3 to rotate.

[0025] As a specific embodiment, the driving device includes a driving motor 41 and a reducer 42 matched with the driving motor 41, the reducer 42 is fixed on the outer wall of the mixing box, specifically fixed on the outer wall of the extension part 12, the reducer 42 and the vertical shaft 21 are connected through a sprocket group; the reducer 42 and the horizontal shaft 31 are connected through a sprocket group and a steering transmission member.

[0026] Specifically, a driving sprocket 43 is cooperatively connected to the power output shaft of the reducer 42, a first driven sprocket 44 corresponding to the driving sprocket 43 is provided on the vertical shaft 21, and the driving sprocket 43 and the first driven sprocket 44 are cooperatively connected through a chain 46.

[0027] The driving motor 41 and the reducer 42 drive the active sprocket 43 to rotate. While the active sprocket 43 rotates, the first driven sprocket 44, the vertical shaft 21 and the push plate 2 are driven to rotate in the stirring part 11 in sequence through the chain 46. When there are mixed raw materials of corn cobs and catalysts (such as sulfuric acid) in the stirring box corresponding to the stirring part 11, the rotating push plate 2 will rotate with the mixed raw materials, and push the mixed raw materials into the space of the extension part 12 under the action of centrifugal force.

[0028] Specifically, the steering transmission member includes a transmission shaft 48, which is rotatably arranged on the plate seat 62, and a third shaft seat 53 vertically corresponding to the transmission shaft 48 is arranged on the plate seat 62, and the top end of the transmission shaft 48 is matched and connected with the third shaft seat 53, and the bottom end of the transmission shaft 48 is matched and connected with the corresponding transverse shaft 31 through a bevel gear 47. In detail, the transverse shaft 31 passes through the side wall of the extension part 12 and extends to the outside, and one end of the transverse shaft 31 extending to the outside is close to the transmission shaft 48, and the ends of the transverse shaft 31 and the transmission shaft 48 close to each other are both provided with bevel gears 47, and the two corresponding bevel gears 47 are meshed. The top end of the transmission shaft 47 is provided with a second driven sprocket 45 corresponding to the driving sprocket 43, and the second driven sprocket 45 is matched and connected with the driving sprocket 43 through a chain 46.

[0029] The driving sprocket 43 is driven to rotate by the driving motor 41 and the reducer 42. The driving sprocket 43 rotates while the second driven sprocket 45, the transmission shaft 48 and the bevel gear 47 are driven to rotate in sequence through the chain 46. Finally, the horizontal shaft 31 and the collecting plate 3 are driven to rotate under the transmission action of the bevel gear 47. It should be noted that the rotating action of the collecting plate 3 in this embodiment is to push the mixed material in the extension part 12 into the stirring part 11, that is, to push the mixed material scattered in the extension part 12 back into the stirring part 11 for collection. Therefore, when the push plate 2 is located below the axis of the vertical shaft 21, the rotation direction of the push plate 2 is from the extension part 12 to the stirring part 11.

[0030] When the corn cob and catalyst (such as sulfuric acid) solution mixed raw materials are mixed in the mixing box, the mixed raw materials are mixed in a horizontal direction under the rotating stirring of the push plate 2 through the above-mentioned stirring method, and the collecting plate 3 collects the mixed raw materials again around the push plate 2 by the rotating pushing method. During the collection process, the rotating pushing of the mixed raw materials by the collecting plate 3 will form an upward motion trajectory, so that the mixed materials are mixed in a vertical direction when they are collected again around the push plate 2. The mixed materials are mixed in a three-dimensional manner in the horizontal and vertical directions, which greatly increases the mixing efficiency and mixing uniformity of the raw materials and the catalyst during furfural production.

[0031] Furthermore, if Figure 5 and Figure 7 As shown, in order to improve the outward pushing effect of the push plate 2, the push plate 2 is configured to be an arc-shaped structure, and the rotation direction of the push plate 2 is rotated along the direction of the outer arc surface of the push plate 2. The design of the arc surface can increase the effect of the mixed material diffusing outward when the push plate 2 pushes the material, so that when the mixed material generates centrifugal force during rotation, a thrust in the same direction as the centrifugal force will be decomposed in the thrust decomposition force of the arc surface, thereby accelerating the speed at which the mixed material is pushed into the extension portion 12.

[0032] Furthermore, the bottom wall of the extension portion 12 is arranged to be an arc-shaped structure, the axis of the arc-shaped bottom wall coincides with the axis of the horizontal axis 31, and the suspended end of the collecting plate 3 fits with the arc-shaped bottom wall during rotation, thereby preventing the mixed material from entering the extension portion 12 to produce a dead angle, and ensuring that the mixed material can enter the extension portion 12 and be collected into the stirring portion 11 again.

[0033] Furthermore, if Figure 6 As shown, the bottom of the mixing box is also provided with a discharge port (not shown in the figure) for discharging the mixed material, and the discharge port is sealed by a sealing cover 13. After the mixing of the mixed material is completed, the sealing cover 13 is opened to facilitate the discharge of the material from the mixing box.

[0034] Preferably, in this embodiment, the mixing box, push plate 2, vertical axis 21, collecting plate 3, and horizontal axis 31 are all provided with acid-resistant coatings, or the above-mentioned structures are made of acid-resistant materials, such as acid-resistant steel (austenitic stainless steel AISI304 and AISI316, ferritic stainless steel AISI430), etc.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A mixing and stirring device for furfural processing, characterized in that: The stirring box comprises a stirring portion (11) located in the center, and a plurality of extension portions (12) evenly arranged around the stirring portion (11), wherein the plurality of extension portions (12) are connected to the stirring portion (11); a material pusher plate (2) is rotatably provided in the stirring portion (11), and the material pusher plate (2) is attached to the bottom surface of the stirring portion (11); a material collecting plate (3) is rotatably provided in the extension portion (12) and at the junction of the extension portion (12) and the stirring portion (11); It also includes a driving device for driving the pushing plate (2) and the collecting plate (3) to rotate.

2. The mixing and stirring device for furfural processing according to claim 1, characterized in that: The mixing box is supported off the ground by a support frame (61); a plate seat (62) is provided on the top of the support frame (61); and the push plate (2) is rotatably disposed on the plate seat (62).

3. The mixing and stirring device for furfural processing according to claim 2, characterized in that: The push plate (2) is rotatably arranged on the plate seat (62) via a vertical axis (21).

4. The mixing and stirring device for furfural processing according to claim 3, characterized in that: The collecting plate (3) is rotatably arranged in the extension portion (12) via a transverse axis (31).

5. The mixing and stirring device for furfural processing according to claim 4, characterized in that: The driving device comprises a driving motor (41) and a reducer (42) matched with the driving motor (41); the reducer (42) and the vertical shaft (21) are connected in transmission via a sprocket set; and the reducer (42) and the horizontal shaft (31) are connected in transmission via a sprocket set and a steering transmission member.

6. The mixing and stirring device for furfural processing according to claim 5, characterized in that: A driving sprocket (43) is cooperatively connected to the power output shaft of the reducer (42), a first driven sprocket (44) corresponding to the driving sprocket (43) is arranged on the vertical shaft (21), and the driving sprocket (43) and the first driven sprocket (44) are cooperatively connected via a chain (46).

7. The mixing and stirring device for furfural processing according to claim 5, characterized in that: The steering transmission member comprises a transmission shaft (48), the transmission shaft (48) being rotatably arranged on the plate seat (62), a third shaft seat (53) vertically corresponding to the transmission shaft (48) being arranged on the plate seat (62), the top end of the transmission shaft (48) being cooperatively connected to the third shaft seat (53), and the bottom end of the transmission shaft (48) being cooperatively connected to the corresponding transverse shaft (31) via a bevel gear (47).

8. The mixing and stirring device for furfural processing according to claim 1, characterized in that: The push plate (2) is configured as an arc-shaped structure.

9. The mixing and stirring device for furfural processing according to claim 4, characterized in that: The bottom wall of the extension portion (12) is configured as an arc-shaped structure, the axis of the arc-shaped bottom wall coincides with the axis of the horizontal axis (31), and the suspended end of the collecting plate (3) fits with the arc-shaped bottom wall when rotating.

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