Corncob hydrolysis device

Abstract

The utility model discloses a corncob hydrolysis device, which belongs to the technical field of furfural production equipment and comprises a hydrolysis kettle and a heating component, the top of the hydrolysis kettle is fixedly connected with a feed pipe, a stirring mechanism is arranged in the hydrolysis kettle and comprises a hollow shaft, and the hollow shaft is rotatably connected to the middle position of the top of the hydrolysis kettle. A plurality of stirring blades are fixedly connected to the side surface of the hollow shaft. The device has the beneficial effects that the air supply mechanism and the pressurization mechanism are arranged, high-temperature steam is supplied into the hollow shaft through the steam inlet pipe and the air supply shell and is sprayed out through the air outlet holes in the air outlet barrel, the heating uniformity in the hydrolysis process is enhanced, the hydrolysis efficiency is improved, the air pressure in the hollow shaft is changed through the lifting shaft which reciprocates up and down, and the hydrolysis effect is improved. The pressure of spraying high-temperature steam is changed at any time, various reactants in the hydrolysis kettle form turbulent flow, the reaction speed is increased, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of furfural production equipment, in particular to a corncob hydrolysis device. Background Art

[0002] As global awareness of sustainable development and environmental protection increases, furfural, as a green, renewable resource, is gaining increasing attention. Furfural is a chemical product with the chemical formula C5H4O2, a colorless, transparent, oily liquid. It is usually obtained by acid-catalyzed hydrolysis of agricultural waste rich in pentoses, such as corn cobs, sugarcane bagasse, and rice husks. Furfural is an important chemical raw material and is widely used in foundry, refractories, coatings, resin manufacturing, agriculture and other industries. For example, furfural is one of the main raw materials for the production of furan resin, which has good heat resistance, corrosion resistance and wear resistance, and is suitable for the manufacture of various castings and composite materials. Furfural and its derivatives can be used as active ingredients in the synthesis of certain pesticides, such as herbicides and insecticides.

[0003] After searching, the Chinese patent publication number CN215234162U discloses a hydrolysis kettle for producing furfural, which includes a hydrolysis kettle, a feed inlet is arranged on the top of the hydrolysis kettle, a discharge pipe and a steam inlet pipe are arranged at the bottom of the hydrolysis kettle, a stirring blade is arranged inside the hydrolysis kettle through a stirring shaft, and a motor is arranged above the hydrolysis kettle; an insulation layer is wrapped on the outer wall of the hydrolysis kettle, an electric heating wire is passed through the insulation layer, and a temperature sensor is arranged inside the hydrolysis kettle; a pressure gauge and an exhaust valve are arranged on the top of the hydrolysis kettle; a PLC control is arranged on the outer wall of the hydrolysis kettle. A device is provided with a steam solenoid valve on the steam inlet pipe of the hydrolysis kettle, which controls the steam input according to the pressure and temperature in the hydrolysis kettle, and opens the exhaust valve to exhaust when the pressure is too high, thereby automatically controlling the pressure and temperature in the hydrolysis kettle. However, unlike the prior art, the steam is introduced from the bottom of the device, which makes it difficult to ensure that it can be evenly supplied to all parts of the raw materials. In addition, the rotation of the stirring blades for mixing causes the raw materials to rotate accordingly, which also makes it difficult to evenly mix the raw materials as a whole, thereby affecting the mixing reaction effect and production rate of furfural. Therefore, its practicality needs to be improved. Utility Model Content

[0004] The purpose of the present utility model is to provide a corncob hydrolysis device in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A corncob hydrolysis device comprises a hydrolysis kettle and a heating assembly, wherein a feed pipe is fixedly connected to the top of the hydrolysis kettle, a discharge pipe is fixedly connected to the bottom of the hydrolysis kettle, a discharge valve is installed on the discharge pipe, a stirring mechanism is provided in the hydrolysis kettle, the stirring mechanism comprises a hollow shaft, the hollow shaft is rotatably connected to the middle position of the top of the hydrolysis kettle, a plurality of stirring blades are fixedly connected to the side of the hollow shaft, a fixed shell is fixedly connected to the top of the hydrolysis kettle, a drive assembly for rotating the hollow shaft is provided on the fixed shell, and an air supply mechanism is provided on the hydrolysis kettle, the air supply mechanism comprises a steam inlet pipe, the steam inlet pipe is connected to the hollow shaft, and a plurality of air outlet pipes are fixedly connected to the side of the hollow shaft;

[0007] A pressure mechanism is provided on the hollow shaft, which includes a lifting shaft, a limiting shell fixedly connected to the lifting shaft, a guide block slidingly connected to the side of the limiting shell, the guide block fixedly connected in the hollow shaft, a reciprocating screw rod fixedly connected to the top of the lifting shaft, a threaded sleeve threadedly connected to the reciprocating screw rod, and the threaded sleeve fixedly connected to the top of the fixed shell.

[0008] Preferably, a steam solenoid valve is installed on the steam inlet pipe, the outlet end of the steam inlet pipe is fixedly connected to the air supply shell, a rotary joint is fixedly connected inside the air supply shell, the hollow shaft is rotatably connected to the top of the rotary joint, and a plurality of air outlet holes are opened on the air outlet tube.

[0009] Preferably, an isolation net is provided between the air outlet end of the air outlet tube and the air outlet hole.

[0010] Preferably, the air outlet holes on both sides of the hollow shaft face upward and downward respectively.

[0011] Preferably, the heating assembly includes a heat-insulating shell, which is fixedly connected to the side of the hydrolysis kettle, and an electric heating wire is fixedly installed in the heat-insulating shell.

[0012] Preferably, a pressure relief valve is fixedly connected to the top of the hydrolysis kettle.

[0013] The beneficial effects are: an air supply mechanism and a pressurizing mechanism are set up, high-temperature steam is supplied to the hollow shaft through the steam inlet pipe and the air supply shell, and is ejected through the air outlet on the air outlet tube, thereby enhancing the heating uniformity during the hydrolysis process and improving the hydrolysis efficiency. The air pressure in the hollow shaft is changed by the up and down reciprocating lifting shaft, so that the pressure of the high-temperature steam ejected changes all the time, forming turbulence of various reactants in the hydrolysis kettle, increasing the reaction rate, and improving production efficiency.

[0014] Additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of a corncob hydrolysis device according to the present invention;

[0017] Figure 2 This is a front cross-sectional view of a corncob hydrolysis device according to the present invention;

[0018] Figure 3 This is a schematic diagram of the connection between the stirring mechanism and the air supply mechanism of the corncob hydrolysis device of the present invention;

[0019] Figure 4 This is a schematic diagram of the connection between the lifting shaft and the reciprocating screw rod of a corncob hydrolysis device described in the present invention;

[0020] Figure 5 This is a schematic diagram of the coordination between the stirring mechanism and the lifting shaft of the corncob hydrolysis device described in the present invention;

[0021] Figure 6 The utility model is a corn cob hydrolysis device Figure 2 Enlarged view of point A in the middle.

[0022] The accompanying drawings are explained as follows: 101, hydrolysis kettle; 102, feed pipe; 103, discharge pipe; 104, discharge valve; 105, insulation shell; 106, electric heating wire; 201, hollow shaft; 202, stirring blade; 203, first bevel gear; 204, second bevel gear; 205, fixed shell; 206, electric motor; 301, steam inlet pipe; 302, steam solenoid valve; 303, air supply shell; 304, rotary joint; 305, air outlet; 306, air outlet; 307, isolation net; 308, pressure relief valve; 401, lifting shaft; 402, limit shell; 403, guide block; 404, reciprocating screw; 405, threaded sleeve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figure 1 — Figure 6 As shown, a corn cob hydrolysis device includes a hydrolysis kettle 101 and a heating component. The top of the hydrolysis kettle 101 is connected to a feed pipe 102 by bolts, and the bottom of the hydrolysis kettle 101 is connected to a discharge pipe 103 by bolts. A discharge valve 104 is installed on the discharge pipe 103. A stirring mechanism is provided in the hydrolysis kettle 101. The stirring mechanism includes a hollow shaft 201, which is rotatably connected to the middle position of the top of the hydrolysis kettle 101. A plurality of stirring blades 202 are welded to the side of the hollow shaft 201. The rotation of the hollow shaft 201 drives the stirring blades 202 to rotate, thereby stirring the corn in the hydrolysis kettle 101. The core is mixed with other raw materials and reacts together to produce furfural. The top of the hydrolysis kettle 101 is connected to a fixed shell 205 by bolts. The fixed shell 205 is provided with a drive assembly for rotating the hollow shaft 201. The hydrolysis kettle 101 is provided with an air supply mechanism, which includes a steam inlet pipe 301. The steam inlet pipe 301 is connected to an external steam generator. The steam inlet pipe 301 is connected to the hollow shaft 201. Several groups of gas outlets 305 are welded to the side of the hollow shaft 201. High-temperature steam enters the device from the steam inlet pipe 301 and is ejected from the gas outlet 305 to improve the heating effect of each raw material.

[0027] The hollow shaft 201 is provided with a pressurizing mechanism, which includes a lifting shaft 401, a limit shell 402 welded on the lifting shaft 401, and a guide block 403 slidingly connected to the side of the limit shell 402. The setting of the guide block 403 enables the limit shell 402 to move up and down along the direction of the guide block 403, thereby limiting the lifting shaft 401 in the up and down directions relative to the hollow shaft 201. The guide block 403 is welded in the hollow shaft 201. The top of the lifting shaft 401 is connected to a reciprocating screw rod 404 by a bolt. The reciprocating screw rod 404 has a threaded It is connected with a threaded sleeve 405, which is connected to the top of the fixed shell 205 by bolts. When the hollow shaft 201 rotates, the cooperation between the guide block 403 and the limit shell 402 drives the lifting shaft 401 to rotate, and the lifting shaft 401 drives the reciprocating screw rod 404 to rotate. Due to the cooperation between the reciprocating screw rod 404 and the threaded sleeve 405, the reciprocating screw rod 404 drives the lifting shaft 401 to reciprocate up and down, so that the lifting shaft 401 forms a piston-like motion in the hollow shaft 201, causing the air pressure in the hollow shaft 201 to change.

[0028] In this embodiment, a steam solenoid valve 302 is installed on the steam inlet pipe 301, and the outlet end of the steam inlet pipe 301 is connected to the air supply shell 303 by bolts. A rotary joint 304 is connected inside the air supply shell 303 by bolts. The hollow shaft 201 is rotatably connected to the top of the rotary joint 304, and a plurality of air outlet holes 306 are opened on the air outlet cylinder 305. As the hollow shaft 201 rotates, the air outlet cylinder 305 rotates synchronously with the hollow shaft 201, and steam is ejected from the air outlet holes 306 of the air outlet cylinder 305, thereby improving the stirring effect of the hollow shaft 201 and the stirring blade 202, and improving the heating uniformity of each raw material.

[0029] In this embodiment, an isolation net 307 is provided at the outlet end of the gas outlet cylinder 305 and inside the gas outlet hole 306 . The isolation net 307 prevents the raw materials from being blocked inside the gas outlet cylinder 305 .

[0030] In this embodiment, the air outlet holes 306 on both sides of the hollow shaft 201 face upward and downward respectively. This arrangement causes turbulence in the raw materials around the same group of air outlet tubes 305, further improving the mixing uniformity and the uniformity of steam supply, thereby increasing the reaction rate.

[0031] In this embodiment, the heating assembly includes an insulation shell 105, which is connected to the side of the hydrolysis kettle 101 by bolts. An electric heating wire 106 is fixedly installed in the insulation shell 105. The electric heating wire 106 is set to maintain a constant temperature environment in the hydrolysis kettle 101 and increase the reaction rate.

[0032] In this embodiment, a pressure relief valve 308 is connected to the top of the hydrolysis kettle 101 via bolts, and the pressure relief valve 308 prevents the gas pressure in the hydrolysis kettle 101 from being too high.

[0033] In this embodiment, the driving assembly includes a motor 206 , an output end of the motor 206 is bolted to a second bevel gear 204 , and a top side of the hollow shaft 201 is bolted to a first bevel gear 203 meshing with the second bevel gear 204 .

[0034] Working principle: When the device is in use, the crushed corn cobs and other raw materials are put into the hydrolysis kettle 101 through the feed pipe 102, the motor 206 and the electric heating wire 106 are turned on, and the steam solenoid valve 302 is opened. Steam enters the device from the steam inlet pipe 301, is supplied to the hollow shaft 201 through the steam solenoid valve 302 and the air supply shell 303, and is finally ejected from the air outlet 306 of the air outlet cylinder 305. The motor 206 drives the hollow shaft 201 to rotate through the first bevel gear 203 and the second bevel gear 204. The rotation of the hollow shaft 201 drives the stirring blade 202 to rotate, so that the corn cobs in the hydrolysis kettle 101 are mixed with other raw materials, and the two react to produce furfural. When the hollow shaft 201 rotates, the mixing blade 202 rotates. At this time, due to the cooperation between the guide block 403 and the limiting shell 402, the lifting shaft 401 is driven to rotate, and the lifting shaft 401 drives the reciprocating screw 404 to rotate. Due to the cooperation between the reciprocating screw 404 and the threaded sleeve 405, the reciprocating screw 404 drives the lifting shaft 401 to reciprocate up and down, so that the lifting shaft 401 forms a piston-like movement in the hollow shaft 201, causing the air pressure in the hollow shaft 201 to change, so that the high-temperature steam ejected from the air outlet tube 305 disrupts the material flow in the hydrolysis kettle 101, thereby forming turbulence, further improving the uniformity and reaction rate of the reaction. After the reaction is completed, the discharge valve 104 is opened, and the raw materials are discharged from the discharge pipe 103 for subsequent production operations.

[0035] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A corncob hydrolysis device, comprising a hydrolysis kettle (101) and a heating assembly, wherein a feed pipe (102) is fixedly connected to the top of the hydrolysis kettle (101), a discharge pipe (103) is fixedly connected to the bottom of the hydrolysis kettle (101), and a discharge valve (104) is installed on the discharge pipe (103), characterized in that: The hydrolysis kettle (101) is provided with a stirring mechanism, the stirring mechanism comprising a hollow shaft (201), the hollow shaft (201) being rotatably connected to the middle position of the top of the hydrolysis kettle (101), a plurality of stirring blades (202) being fixedly connected to the side of the hollow shaft (201), a fixed shell (205) being fixedly connected to the top of the hydrolysis kettle (101), a driving assembly for rotating the hollow shaft (201) being provided on the fixed shell (205), an air supply mechanism being provided on the hydrolysis kettle (101), the air supply mechanism comprising a steam inlet pipe (301), the steam inlet pipe (301) being connected to the hollow shaft (201), and a plurality of gas outlets (305) being fixedly connected to the side of the hollow shaft (201); The hollow shaft (201) is provided with a pressurizing mechanism, which comprises a lifting shaft (401), a limiting shell (402) fixedly connected to the lifting shaft (401), a guide block (403) slidably connected to the side of the limiting shell (402), the guide block (403) fixedly connected in the hollow shaft (201), a reciprocating screw rod (404) fixedly connected to the top of the lifting shaft (401), a threaded sleeve (405) threadedly connected to the reciprocating screw rod (404), and the threaded sleeve (405) fixedly connected to the top of the fixed shell (205).

2. The corncob hydrolysis device according to claim 1, characterized in that: A steam solenoid valve (302) is installed on the steam inlet pipe (301), and the gas outlet end of the steam inlet pipe (301) is fixedly connected to an air supply shell (303). A rotary joint (304) is fixedly connected inside the air supply shell (303). The hollow shaft (201) is rotatably connected to the top of the rotary joint (304), and a plurality of gas outlet holes (306) are opened on the gas outlet cylinder (305).

3. The corncob hydrolysis device according to claim 2, characterized in that: An isolation net (307) is provided between the air outlet end of the air outlet cylinder (305) and the air outlet hole (306).

4. The corncob hydrolysis device according to claim 2, characterized in that: The air outlet holes (306) located on both sides of the hollow shaft (201) face upward and downward respectively.

5. The corncob hydrolysis device according to claim 1, characterized in that: The heating assembly comprises a heat-insulating shell (105), the heat-insulating shell (105) is fixedly connected to the side of the hydrolysis kettle (101), and an electric heating wire (106) is fixedly installed in the heat-insulating shell (105).

6. The corncob hydrolysis device according to claim 1, characterized in that: A pressure relief valve (308) is fixedly connected to the top of the hydrolysis kettle (101).

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