Novel acid mixing screw in furfural industry

Abstract

The utility model relates to the technical field of acid mixing screws, in particular to a novel acid mixing screw in the furfural industry, which is characterized in that sulfuric acid and corncob particles are preliminarily mixed through an extrusion device, redundant dilute sulfuric acid in a mixing part is extruded, and the extruded dilute sulfuric acid and corncob particles are secondarily mixed through a mixing device. The mixing effect and the practicability of the equipment are improved; comprising an extrusion device and a mixing device, and the input end of the mixing device is connected with the output end of the extrusion device.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of acid mixing screw, particularly to a novel acid mixing screw for furfural industry. BACKGROUND

[0002] Diluted sulfuric acid as catalyst can accelerate the hydrolysis process of corncob particles in the hydrolysis kettle, and the traditional acid mixing process for furfural production is that corncob particles fall into the acid mixing vehicle under the action of gravity, and 3%-5% diluted sulfuric acid is added into the acid mixing vehicle through the pipeline from the diluted sulfuric acid measuring tank, and the corncob particles and the 3%-5% diluted sulfuric acid are mixed in the acid mixing vehicle under the action of the stirring device (the mixing process is continuous), and the time from entering the acid mixing machine to completing the mixing is about 1 minute, the mixed material is called "acid mixing material", and after the mixing is completed, the acid mixing material is transported into the hydrolysis kettle through the fully-closed belt conveyor device.

[0003] The acid mixing machine of the traditional process usually uses the common shaft screw conveyor on the market, and has the problems of poor acid mixing uniformity, insufficient acid immersion of corncob, etc., and the acid mixing effect directly affects the hydrolysis process operation and the yield of furfural. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides a novel acid mixing screw for furfural industry, which preliminarily mixes sulfuric acid and corncob particles through an extrusion device, extrudes the excess diluted sulfuric acid in the mixed part, and secondarily mixes the extruded diluted sulfuric acid and corncob particles through a mixing device, so as to improve the mixing effect of the equipment and the practicability of the equipment.

[0005] The utility model relates to a novel acid mixing screw for furfural industry, which includes an extrusion device and a mixing device, the input end of the mixing device is connected with the output end of the extrusion device, the sulfuric acid and corncob particles are preliminarily mixed through the extrusion device, the excess diluted sulfuric acid in the mixed part is extruded, the extruded diluted sulfuric acid and corncob particles are secondarily mixed through the mixing device, so as to improve the mixing effect of the equipment and the practicability of the equipment.

[0006] Preferably, the extrusion device comprises a compression screw cylinder, a compression screw, a first motor, a hopper, a corrosion-resistant pipe and a spray head, the compression screw is installed in the compression screw cylinder, the first motor is installed on the left end face of the compression screw cylinder, the output end of the first motor is connected with the compression screw, the left part of the upper end face of the compression screw cylinder is connected with the hopper, a plurality of groups of spray heads are uniformly installed on the side face of the hopper, and the input ends of the plurality of groups of spray heads are connected with an external pumping device through a plurality of corrosion-resistant pipes; the corn cob particles are continuously added into the hopper, high-pressure dilute sulfuric acid is sent into the spray head through the corrosion-resistant pipe, and then the dilute sulfuric acid and the corn cob particles are uniformly mixed, and then the corn cob particles enter into the compression screw cylinder, the first motor is started to transmit power to the compression screw to drive the compression screw to rotate, so that the corn cob particles are transported and extruded to the right, part of the dilute sulfuric acid in the corn cob particles is extruded, and part of the dry corn cob particles are mixed, and at the same time, the air in the corn cob particles is extruded, and the dilute sulfuric acid is soaked into the corn cob through the extrusion force.

[0007] Preferably, the mixing device comprises a discharge pipe, a feeding pipe, a common screw, a second motor and a discharge pipe, the right part of the lower end face of the compression screw cylinder is provided with an output port, the feeding pipe is installed on the lower side of the compression screw cylinder, the left part of the upper end face of the feeding pipe is provided with an input end, the output end of the compression screw cylinder is connected with the input end of the feeding pipe through the discharge pipe, the second motor is installed on the left end face of the feeding pipe, the common screw is horizontally installed in the feeding pipe, the output end of the second motor is connected with the common screw, and the right part of the lower end face of the common screw is installed with the discharge pipe; the corn cob material in the compression screw cylinder is sent into the feeding pipe through the discharge pipe, then the second motor is started to transmit power to the common screw to drive the common screw to rotate, so that the extruded dilute sulfuric acid and the corn cob are further mixed again, and the mixing effect of the dilute sulfuric acid and the corn cob is improved.

[0008] Preferably, the right part of the compression screw cylinder and the compression screw is contracted in diameter, and the compression ratio of the compression screw is between 2 and 3; by controlling the compression ratio of the compression screw cylinder to be between 2 and 3, the volume change of the corn cob particles under pressure is adapted, the extrusion capacity of the extrusion device for the dilute sulfuric acid and the air in the corn cob particles is improved, and the practicability of the device is improved.

[0009] Preferably, the right part of the compression screw cylinder itself is inclined downward by 5 degrees; by making the right part of the compression screw cylinder itself inclined downward by 5 degrees, the dilute sulfuric acid solution remaining in the compression screw cylinder after the completion of the processing and production of the device and the extruded dilute sulfuric acid during the processing and production process can be smoothly discharged, the residue of the liquid in the compression screw cylinder is reduced, and the practicability of the device is improved.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: sulfuric acid and corn cob particles are preliminarily mixed by an extrusion device, and excess dilute sulfuric acid in the mixed part is squeezed out, and the extruded dilute sulfuric acid and corn cob particles are secondary mixed by a mixing device to improve the mixing effect and practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Fig. 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0012] Fig. 2 It is a schematic diagram of the cross-sectional structure of the mixing device of the utility model;

[0013] Fig. 3 This is a schematic cross-sectional view of the extrusion device of the utility model;

[0014] Markings in the attached figure: 1. Compression screw cylinder; 2. Compression screw; 3. First motor; 4. Silo; 5. Corrosion-resistant pipe; 6. Nozzle; 7. Discharge pipe; 8. Feed pipe; 9. Ordinary screw; 10. Second motor; 11. Discharge pipe. DETAILED DESCRIPTION

[0015] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0016] Example

[0017] like Fig. 1 、 Fig. 2 and Fig. 3 The mixing device is connected to the extrusion device;

[0018] First, corncob particles are continuously added into the silo 4, and high-pressure dilute sulfuric acid is fed into the nozzle 6 through the corrosion-resistant pipe 5 for spraying, thereby uniformly mixing the dilute sulfuric acid and the corncob particles. The corncob particles then enter the compression screw barrel 1, and the first motor 3 is turned on to transmit power to the compression screw 2 to drive the compression screw 2 to rotate, thereby transporting and squeezing the corncob particles to the right. The corncob material in the compression screw barrel 1 is then fed into the feed pipe 8 through the discharge pipe 7, and the second motor 10 is turned on to transmit power to the common screw 9 to drive the common screw 9 to rotate, thereby further mixing the extruded dilute sulfuric acid and corncob.

[0019] The extrusion device includes a compression screw barrel 1, a compression screw 2, a first motor 3, a silo 4, a corrosion-resistant pipe 5 and a nozzle 6. The compression screw 2 is installed in the compression screw barrel 1, and the first motor 3 is installed on the left end surface of the compression screw barrel 1. The output end of the first motor 3 is connected to the compression screw 2. The left part of the upper end surface of the compression screw barrel 1 is connected to the silo 4. Multiple groups of nozzles 6 are evenly installed on the side of the silo 4. The input ends of the multiple groups of nozzles 6 are connected to the external pumping equipment through multiple groups of corrosion-resistant pipes 5.

[0020] The mixing device includes a discharge pipe 7, a feed pipe 8, a common screw 9, a second motor 10 and a discharge pipe 11. The right portion of the lower end surface of the compression screw cylinder 1 is provided with an output port, the feed pipe 8 is installed on the lower side of the compression screw cylinder 1, and the left portion of the upper end surface of the feed pipe 8 is provided with an input end. The output end of the compression screw cylinder 1 is connected to the input end of the feed pipe 8 through the discharge pipe 7. The second motor 10 is installed on the left end surface of the feed pipe 8. The common screw 9 is horizontally installed in the feed pipe 8. The output end of the second motor 10 is connected to the common screw 9. The discharge pipe 11 is installed on the right portion of the lower end surface of the common screw 9.

[0021] It also includes the right diameter contraction of the compression spiral barrel 1 and the compression spiral 2, and the compression ratio of the compression spiral is between 2 and 3;

[0022] The right side of the compression screw 1 itself is tilted downward by 5 degrees;

[0023] The sulfuric acid and corn cob particles are preliminarily mixed by an extrusion device, and excess dilute sulfuric acid in the mixed part is squeezed out. The extruded dilute sulfuric acid and corn cob particles are secondarily mixed by a mixing device to improve the mixing effect and practicality of the equipment.

[0024] like Figs. 1 to 3 As shown, the utility model is a new type of acid mixing screw for the furfural industry. When it is working, the corn cob particles are first continuously added into the silo 4, and the high-pressure dilute sulfuric acid is sent to the nozzle 6 through the corrosion-resistant pipe 5 for spraying, so that the dilute sulfuric acid and the corn cob particles are evenly mixed. After that, the corn cob particles enter the compression screw barrel 1, and the first motor 3 is turned on to transmit power to the compression screw 2 to drive the compression screw 2 to rotate, thereby transporting and squeezing the corn cob particles to the right, and then the corn cob material in the compression screw barrel 1 is sent into the feed pipe 8 through the discharge pipe 7, and then the second motor 10 is turned on to transmit power to the ordinary screw 9 to drive the ordinary screw 9 to rotate, so that the extruded dilute sulfuric acid and corn cob can be further mixed again.

[0025] The first motor 3 and the second motor 10 of the novel acid mixing screw for furfural industry of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual without the need for creative work by technicians in this field.

[0026] The above merely describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A new type of acid mixing screw for furfural industry; characterized in that, It includes an extrusion device and a mixing device, wherein the input end of the mixing device is connected to the output end of the extrusion device; The extrusion device comprises a compression screw barrel (1), a compression screw (2), a first motor (3), a silo (4), a corrosion-resistant pipe (5) and a nozzle (6); the compression screw (2) is installed in the compression screw barrel (1); the first motor (3) is installed on the left end surface of the compression screw barrel (1); the output end of the first motor (3) is connected to the compression screw (2); the left part of the upper end surface of the compression screw barrel (1) is connected to the silo (4); multiple groups of nozzles (6) are evenly installed on the side of the silo (4); the input ends of the multiple groups of nozzles (6) are connected to an external pumping device through multiple groups of corrosion-resistant pipes (5); The mixing device comprises a discharge pipe (7), a feed pipe (8), a common spiral (9), a second motor (10) and a discharge pipe (11); an output port is provided on the right portion of the lower end surface of the compression spiral cylinder (1); the feed pipe (8) is installed on the lower side of the compression spiral cylinder (1); an input end is provided on the left portion of the upper end surface of the feed pipe (8); the output end of the compression spiral cylinder (1) is connected to the input end of the feed pipe (8) through the discharge pipe (7); a second motor (10) is installed on the left end surface of the feed pipe (8); a common spiral (9) is horizontally installed in the feed pipe (8); the output end of the second motor (10) is connected to the common spiral (9); and a discharge pipe (11) is installed on the right portion of the lower end surface of the common spiral (9).

2. A novel acid mixing screw for furfural industry according to claim 1, characterized in that: The invention also includes the right diameter contraction of the compression spiral cylinder (1) and the compression spiral (2), and the compression ratio of the compression spiral is between 2 and 3.

3. A novel acid mixing screw for furfural industry as claimed in claim 2, characterized in that: The compression spiral cylinder (1) is also provided with a right portion thereof tilted downward by 5 degrees.

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