Raw material extrusion dehydration device for chitin extraction

Abstract

The invention relates to the technical field of chitin extraction, and discloses a raw material extrusion dehydration device for chitin extraction, the raw material extrusion dehydration device comprises a shell, the lower end of the shell is connected with a bottom plate, the middle of the upper end of the bottom plate is provided with a filter screen, the periphery of the lower end of the bottom plate is connected with supporting legs, and the right side of the upper end of the bottom plate is provided with a material guide mechanism; a feeding port is formed in the upper end of the shell, a feeding mechanism corresponding to the feeding port in position is installed at the upper end of the shell, a pushing mechanism is installed in an inner cavity of the shell, an opening groove is formed in the right side of the shell, an extrusion mechanism is connected to the right side of a bottom plate through a support, and a drying mechanism is installed on the outer side of the pushing mechanism. Compared with the prior art, the shrimp and crab shell raw material dehydration device is reasonable in structural design, shrimp and crab shell raw materials can be conveniently subjected to multiple times of extrusion dehydration, then the shrimp and crab shell raw materials are rapidly dried and dehydrated, and the dehydration efficiency of the shrimp and crab shell raw materials is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of chitosan extraction, in particular to a raw material extrusion dehydration device for chitosan extraction. Background Art

[0002] Chitosan, also known as chitosan or chitin, is a natural macromolecular polymer connected by β-(1-4)-glycosidic bonds. It is the most abundant organic polymer material in nature besides cellulose. It mainly comes from the exoskeleton of crustaceans, such as shrimp shells and crab shells. Due to its unique physical and chemical properties, such as good biocompatibility, biodegradability, antibacterial properties and renewability, chitosan and its derivatives have shown broad application prospects in many fields such as medicine, food, agriculture, and textiles.

[0003] At present, the industry generally uses chemical methods to extract chitosan from shrimp shells, crab shells and other raw materials. This method mainly includes the following steps: first, remove calcium carbonate from the raw materials through acid treatment (i.e. decalcification); then, wash with water several times to remove residual acid; then, use alkali solution to remove protein components (i.e. deproteinization); finally, wash again and dry to obtain pure chitosan products. In this process, in order to save energy and facilitate subsequent drying operations, it is particularly important to effectively dehydrate the raw materials.

[0004] Traditional dehydration devices usually use a simple screw extrusion mechanism, that is, the material is added to the equipment through a feed hopper, and then a screw with a gradually decreasing diameter pushes the material forward, compressing and dehydrating the material in the process. However, this method has low dehydration efficiency and cannot meet the high requirements of modern industrial production for speed and effect. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a raw material extrusion dehydration device for chitosan extraction to solve this problem.

[0006] To achieve the above object, the present invention provides the following technical solutions: A raw material extrusion and dehydration device for chitin extraction comprises a shell, the lower end of the shell is connected to a bottom plate, a filter screen is installed in the middle of the upper end of the bottom plate, the lower end of the bottom plate is connected to legs all around, a material guiding mechanism is arranged on the right side of the upper end of the bottom plate, a feed port is arranged on the upper end of the shell, a feed mechanism corresponding to the position of the feed port is installed on the upper end of the shell, a pushing mechanism is installed in the inner cavity of the shell, an open groove is arranged on the right side of the shell, an extrusion mechanism is connected to the right side of the bottom plate through a bracket, a drying mechanism is installed on the outer side of the pushing mechanism, and the extrusion mechanism is movably sleeved on the outer side of the pushing mechanism.

[0007] Furthermore, the feeding mechanism includes a feeding hopper installed at the upper end of the shell, and the lower part of the inner cavity of the feeding hopper is symmetrically rotatably connected to a rolling roller. A driving motor is installed at the upper end of the shell through a mounting plate, and the output end of the driving motor is connected to one end of one of the rolling rollers, and meshing gears are installed on the outer sides of the rolling rollers.

[0008] Furthermore, the pushing mechanism includes a servo motor installed on the outside of the shell, the output end of the servo motor passes through the shell and extends to its inner cavity and is connected to a screw rod, one end of the screw rod is connected to a support shaft, the support shaft is rotatably connected to the bracket, and a push plate is installed on the outside of the screw rod.

[0009] Furthermore, the extrusion mechanism includes an extrusion cylinder installed on the outside of the bracket, the output end of the extrusion cylinder is connected to a fixed plate, the fixed plate is movably sleeved on the outside of the support shaft, one side of the fixed plate is symmetrically connected to a fixed column, one end of the fixed column is commonly connected to an extrusion head, and the position of the extrusion head corresponds to the opening groove.

[0010] Furthermore, a circular hole is provided in the middle of the extrusion head, and an L-shaped plate is symmetrically connected to the outer side of the extrusion head, and a first spring is connected to the inner side of each of the L-shaped plates. One end of the first spring is commonly connected to a disk, and the disk is located in the inner cavity of the circular hole. A limiting column is symmetrically connected to one side of the disk, and the two limiting columns are movably connected to the two L-shaped plates respectively, and the support shaft is located in the inner cavity of the circular hole.

[0011] Furthermore, the drying mechanism includes an outer shell connected to both sides of the push plate and a drying assembly, the outer side of the outer shell is equidistantly provided with first vent holes, the outer side of the push plate is equidistantly provided with second vent holes matching the positions thereof, the inner shell is connected to the left side of the inner cavity of the shell, the inner shell is movably sleeved in the inner cavity of the outer shell, the inner wall of the outer shell is fitted with the outer side of the inner shell, a wind wheel is installed on the outer side of the screw rod, the outer side of the inner shell is connected with an air inlet pipe, one end of the air inlet pipe passes through the shell and extends to the outside Furthermore, the drying component includes a wind tube installed on the right side of the push plate, and through holes are equidistantly arranged on the outer side of the wind tube.

[0012] Furthermore, the inner cavity of the through hole is movably connected with an exhaust pipe, the outer diameter of the exhaust pipe is the same as the inner diameter of the through hole, a support sleeve is installed on the lower outer side of the exhaust pipe, one end of the support sleeve is connected to a second spring, the end of the second spring away from the support sleeve is connected to the inner wall of the wind pipe, third ventilation holes are equidistantly arranged in the middle of the outer side of the exhaust pipe, and the top of the exhaust pipe is conical.

[0013] Furthermore, a sealing sleeve is installed in the middle of the right side of the wind tube, and the sealing sleeve is movably connected to the supporting shaft.

[0014] Furthermore, the material guiding mechanism includes a supporting seat installed between two legs, the upper end of the base plate is provided with a mounting groove, the inner cavity of the mounting groove is provided with a material guiding plate, the two sides of the material guiding plate are rotatably connected with the two sides of the inner cavity of the mounting groove through a connecting shaft, the lower end of the base plate is provided with a lower groove connected with the mounting groove, the lower end of the material guiding plate is installed with a connecting piece, the connecting piece passes through the lower groove and extends to the bottom thereof, the upper end of the supporting seat is installed with an electric push rod, and the output end of the electric push rod is rotatably connected with the connecting piece through a pin shaft.

[0015] Compared with the prior art, the present invention provides a raw material extrusion dehydration device for chitosan extraction, which has the following beneficial effects: 1. The raw material extrusion and dehydration device conducts preliminary rolling and dehydration of the raw material while guiding the material through the feeding mechanism, and then performs secondary extrusion and dehydration on the preliminary dehydrated raw material through the pushing mechanism and the extrusion mechanism at the same time, that is, the shrimp and crab shell raw materials are subjected to secondary clamping and dehydration operation between the extrusion head and the push plate, and at the same time, the push plate drives the air cylinder of the drying component to continue to move toward the extrusion head, and the extrusion head also moves toward the direction of the air cylinder at the same time, and then one end of the air cylinder pushes the disc in the inner cavity of the circular hole outside the extrusion head, so that the disc is pushed to move toward the right side, and the disc synchronously drives the limit column to move through the L-shaped plate, and at the same time compresses the first spring, so that the extrusion area between the extrusion head and the push plate can be further increased, and the effect of extrusion dehydration is effectively increased; 2. The raw material extrusion and dehydration device drives the screw to rotate through the output end of the servo motor, and the screw drives the wind wheel to rotate, so that air is introduced into the inner shell through the air inlet pipe, and the inner cavity of the inner shell is installed with an external heating rod to continuously heat the incoming air. At the same time, after the continuous rotation of the wind wheel, the wind wheel introduces the introduced heated air into the wind tube through the first air vent and the second air vent, so that the hot air lifts up multiple exhaust pipes, and the support sleeve on the outside of the exhaust pipe compresses the second spring, so that the exhaust pipe extends through the through hole to the inner cavity of the shell, and the conical top of the exhaust pipe passes through the inner cavity of the shell, and the third air vent on the outside of the exhaust pipe transports hot air toward the shrimp and crab shell raw materials, which is convenient for the air supply and drying operation of the shrimp and crab shell raw materials, effectively improving the effect of rapid dehydration, and after a period of drying, the moisture is evaporated into water vapor and discharged through the filter, effectively improving the effect of dehydration and drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention; Figure 3 It is a semi-sectioned three-dimensional structural schematic diagram of the feeding mechanism of the present invention; Figure 4 This is a schematic diagram of the internal three-dimensional structure of the shell of the present invention; Figure 5 It is a partial three-dimensional structural schematic diagram of the present invention; Figure 6 It is a schematic diagram of a partially cutaway three-dimensional structure of the extrusion mechanism of the present invention; Figure 7 It is a partial cross-sectional view of the drying mechanism and a three-dimensional structural schematic diagram of the material pushing mechanism of the present invention; Figure 8 It is a partial cross-sectional view of the drying mechanism and a three-dimensional structural schematic diagram of the material pushing mechanism of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the drying component of the present invention; Fig.10 For the present invention Fig. 9 The enlarged structural diagram of the device in part A; Fig.11 It is a partial three-dimensional structural schematic diagram of the present invention; Fig.12 It is a bottom-up three-dimensional structural schematic diagram of the material guiding mechanism of the present invention.

[0017] In the figure: housing 1, bottom plate 2, legs 3, feeding mechanism 4, feeding hopper 41, rolling roller 42, driving motor 43, gear 44, pushing mechanism 5, servo motor 51, screw 52, ​​pushing plate 53, supporting shaft 54, stopper sleeve 55, second vent hole 56, bracket 6, extrusion mechanism 7, extrusion cylinder 71, fixing plate 72, fixing column 73, extrusion head 74, round hole 75, L-shaped plate 76, first spring 77, disc 78, limit Position column 79, drying mechanism 8, inner shell 81, air inlet pipe 82, outer shell 83, wind wheel 84, drying assembly 85, wind tube 851, through hole 852, exhaust tube 853, support sleeve 854, second spring 855, third air hole 856, sealing sleeve 86, first air hole 87, material guiding mechanism 9, material guiding plate 91, support seat 92, electric push rod 93, connecting piece 94, feed port 10, filter screen 11, lower notch 12. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] See also Figure 1-12A raw material extrusion dehydration device for chitosan extraction includes a shell 1, a bottom plate 2 is connected to the lower end of the shell 1, a filter screen 11 is installed in the middle of the upper end of the bottom plate 2, a feed port 10 is arranged at the upper end of the shell 1, a feed mechanism 4 corresponding to the position of the feed port 10 is installed at the upper end of the shell 1, the feed mechanism 4 includes a feed hopper 41 installed at the upper end of the shell 1, a rolling roller 42 is symmetrically connected to the lower part of the inner cavity of the feed hopper 41, a drive motor 43 is installed at the upper end of the shell 1 through a mounting plate, the output end of the drive motor 43 is connected to one end of one of the rolling rollers 42, and meshing gears 44 are installed on the outer sides of the rolling rollers 42.

[0020] The crushed shrimp and crab shell raw materials are guided through the feed hopper 41, and the switch of the drive motor 43 can be turned on at any time through the external controller, and the output end of the drive motor 43 drives a rolling roller 42 and a gear 44 on its outer side to rotate, and the gear 44 on the outer side of the rolling roller 42 drives another gear 44 and the rolling roller 42 in its inner cavity to rotate, and then the two rolling rollers 42 rotate synchronously in opposite directions to roll the shrimp and crab shell raw materials, thereby performing a preliminary dehydration operation, and the dehydrated water is discharged through the filter screen 11, and the shrimp and crab shell raw materials then fall to the upper end of the filter screen 11, which is convenient for subsequent pushing and extrusion operations.

[0021] The inner cavity of the shell 1 is equipped with a pushing mechanism 5, which includes a servo motor 51 installed on the outside of the shell 1. The output end of the servo motor 51 passes through the shell 1 and extends to its inner cavity, where it is connected to a screw rod 52. One end of the screw rod 52 is connected to a support shaft 54, which is rotatably connected to the bracket 6. A pushing plate 53 is installed on the outside of the screw rod 52, and a stop sleeve 55 is installed on the outside of the screw rod 52.

[0022] The output end of the servo motor 51 drives the screw rod 52 and the support shaft 54 ​​to rotate, and the size of the push plate 53 matches the inner cavity of the shell 1, so that the push plate 53 moves from left to right outside the screw rod 52, thereby pushing the fallen shrimp and crab shell raw materials to move toward the extrusion mechanism 7, and the displacement of the push plate 53 is limited by the designed stop sleeve 55.

[0023] A drying mechanism 8 is installed on the outside of the pushing mechanism 5, and the drying mechanism 8 includes an outer shell 83 and a drying assembly 85 connected to both sides of the pushing plate 53. The outer side of the outer shell 83 is equidistantly provided with first vent holes 87, and the outer side of the pushing plate 53 is equidistantly provided with second vent holes 56 that match its position. An inner shell 81 is connected to the left side of the inner cavity of the shell 1, and the inner shell 81 is movably sleeved in the inner cavity of the outer shell 83. The inner wall of the outer shell 83 fits with the outer side of the inner shell 81. A wind wheel 84 is installed on the outside of the screw rod 52, and an air inlet pipe 82 is connected to the outer side of the inner shell 81. One end of the air inlet pipe 82 passes through the shell 1 and extends to the outside.

[0024] When the push plate 53 moves, the outer shell 83 and the drying component 85 are driven to move synchronously, so that the outer shell 83 blocks the feed port 10, thereby preventing new shrimp and crab shell materials from falling to the left side of the push plate 53 during the pushing process, resulting in the inability to continue the pushing and extrusion dehydration operations.

[0025] An open slot is provided on the right side of the shell 1, and an extrusion mechanism 7 is connected to the right side of the bottom plate 2 through a bracket 6. The extrusion mechanism 7 is movably sleeved on the outside of the pushing mechanism 5. The extrusion mechanism 7 includes an extrusion cylinder 71 installed on the outside of the bracket 6, and the output end of the extrusion cylinder 71 is connected to a fixed plate 72, and the fixed plate 72 is movably sleeved on the outside of the support shaft 54. A fixed column 73 is symmetrically connected to one side of the fixed plate 72, and one end of the fixed column 73 is commonly connected to an extrusion head 74, and the extrusion head 74 corresponds to the position of the open slot. A circular hole 75 is provided in the middle of the extrusion head 74, and an L-shaped plate 76 is symmetrically connected to the outside of the extrusion head 74. The inner side of the L-shaped plate 76 is connected to a first spring 77, and one end of the first spring 77 is commonly connected to a disc 78, which is located in the inner cavity of the circular hole 75. A limiting column 79 is symmetrically connected to one side of the disc 78, and the two limiting columns 79 are respectively movably plugged between the two L-shaped plates 76, and the support shaft 54 ​​is located in the inner cavity of the circular hole 75.

[0026] During the pushing process of the pushing mechanism 5, the output end of the extrusion cylinder 71 of the extrusion mechanism 7 drives the fixed plate 72 and the fixed column 73 to move toward the left side, so that the two fixed columns 73 drive the extrusion head 74 to pass through the opening groove and enter the inner cavity of the shell 1, so that the extrusion head 74 and the push plate 53 can perform secondary clamping and dehydration operation on the shrimp and crab shell raw materials, and the dehydrated water continues to be discharged through the filter screen 11. At this time, since the push plate 53 drives the air cylinder 851 of the drying component 85 to continue to move toward the extrusion head 74, and the extrusion head 74 also moves toward the direction of the air cylinder 851 at the same time, and then one end of the air cylinder 851 pushes the disc 78 in the inner cavity of the circular hole 75 outside the extrusion head 74, so that the disc 78 is pushed to move toward the right side, and the disc 78 synchronously drives the limiting column 79 to move through the L-shaped plate 76, and at the same time compresses the first spring 77, so that the extrusion area between the extrusion head 74 and the push plate 53 can be further increased, and the extrusion dehydration effect is effectively increased.

[0027] The drying component 85 includes a wind tube 851 installed on the right side of the push plate 53, and through holes 852 are equidistantly arranged on the outer side of the wind tube 851. The inner cavity of the through hole 852 is movably connected with an exhaust tube 853. The outer diameter of the exhaust tube 853 is the same as the inner diameter of the through hole 852. A support sleeve 854 is installed on the lower part of the outer side of the exhaust tube 853, and one end of the support sleeve 854 is connected to a second spring 855. The end of the second spring 855 away from the support sleeve 854 is connected to the inner wall of the wind tube 851. Third ventilation holes 856 are equidistantly arranged in the middle part of the outer side of the exhaust tube 853. The top of the exhaust tube 853 is conical. A sealing sleeve 86 is installed in the middle part of the right side of the wind tube 851, and the sealing sleeve 86 is movably connected to the support shaft 54.

[0028] When the extrusion head 74 and the push plate 53 move in the same direction, the wind wheel 84 on the outside of the screw rod 52 rotates synchronously. At this time, the control valve on the outside of the air inlet pipe 82 is opened to facilitate the introduction of air into the inner shell 81 through the air inlet pipe 82. The inner cavity of the inner shell 81 is equipped with an external heating rod to continuously heat the incoming air. At the same time, after the continuous rotation of the wind wheel 84, the wind wheel 84 introduces the introduced heated air into the wind tube 851 through the first vent hole 87 and the second vent hole 56. The working state causes the air pressure of the air cylinder 851 to increase, so that the hot air lifts up multiple exhaust cylinders 853, and the support sleeve 854 on the outside of the exhaust cylinder 853 compresses the second spring 855, so that the exhaust cylinder 853 extends through the through hole 852 to the inner cavity of the shell 1, and the conical top of the exhaust cylinder 853 passes through the inner cavity of the shell 1, and the third air hole 856 on the outside of the exhaust cylinder 853 transports hot air toward the shrimp and crab shell materials, which facilitates the air supply and drying operation of the shrimp and crab shell materials, and effectively improves the effect of rapid dehydration.

[0029] The lower end of the base plate 2 is connected with supporting legs 3 all around, and a material guiding mechanism 9 is arranged on the right side of the upper end of the base plate 2. The material guiding mechanism 9 includes a supporting seat 92 installed between the two supporting legs 3. The upper end of the base plate 2 is provided with a mounting groove, and the inner cavity of the mounting groove is provided with a material guiding plate 91. The two sides of the material guiding plate 91 are rotatably connected with the two sides of the inner cavity of the mounting groove through a connecting shaft. The lower end of the base plate 2 is provided with a lower groove 12 connected with the mounting groove, and the lower end of the material guiding plate 91 is installed with a connecting piece 94, which passes through the lower groove 12 and extends to the bottom thereof. An electric push rod 93 is installed on the upper end of the supporting seat 92, and the output end of the electric push rod 93 is rotatably connected with the connecting piece 94 through a pin shaft.

[0030] When the extrusion dehydration and drying operations are completed, the shrimp and crab shell raw materials are located at the upper end of the guide plate 91, and are reset by the pushing mechanism 5 and the extrusion mechanism 7. Then, the output end of the electric push rod 93 drives the connecting piece 94 and the guide plate 91 to tilt upward through the pin shaft, and the output end of the electric push rod 93 reciprocates and retracts, which is convenient for constantly shaking the shrimp and crab shell raw materials on the upper end of the guide plate 91, so that the shrimp and crab shell raw materials are discharged from the opening groove for easy collection.

[0031] Working principle: The present invention is controlled and connected with the driving motor 43, the servo motor 51, the extrusion cylinder 71, and the electric push rod 93 through an external controller. When in use, the crushed shrimp and crab shell raw materials are guided through the feed hopper 41, and the switch of the driving motor 43 is turned on at any time through the external controller, and the output end of the driving motor 43 drives a rolling roller 42 and a gear 44 on the outside to rotate, and the gear 44 on the outside of the rolling roller 42 drives another gear 44 and the rolling roller 42 in the inner cavity to rotate, and then the two rolling rollers 42 rotate synchronously in opposite directions to roll the shrimp and crab shell raw materials, thereby performing a preliminary dehydration operation, and the dehydrated water is discharged through the filter 11; The shrimp and crab shell raw materials then fall to the upper end of the filter screen 11, and the output end of the servo motor 51 drives the screw rod 52 and the support shaft 54 ​​to rotate, and the size of the push plate 53 matches the inner cavity of the shell 1, so that the push plate 53 moves from left to right outside the screw rod 52, thereby pushing the fallen shrimp and crab shell raw materials to move toward the extrusion mechanism 7. When the push plate 53 moves, the push plate 53 drives the outer shell 83 and the drying component 85 to move synchronously, so that the outer shell 83 blocks the feed port 10, thereby preventing new shrimp and crab shell raw materials from falling to the left side of the push plate 53 during the pushing process, resulting in the inability to continue the pushing and extrusion dehydration operations. At the same time, the output end of the extrusion cylinder 71 of the extrusion mechanism 7 drives the fixed plate 72 and the fixed column 73 to move toward the left side, so that the two fixed columns 73 drive the extrusion head 74 to pass through the opening groove and enter the inner cavity of the shell 1, so that the extrusion head 74 and the push plate 53 can perform secondary clamping and dehydration operation on the shrimp and crab shell raw materials, and the dehydrated water continues to be discharged through the filter screen 11. At this time, when the extrusion head 74 and the push plate 53 move in the same direction, the push plate 53 drives the air cylinder 851 of the drying component 85 to continue to move toward the extrusion head 74, and the extrusion head 74 also moves toward the direction of the air cylinder 851 at the same time, and then one end of the air cylinder 851 pushes the disc 78 in the inner cavity of the circular hole 75 outside the extrusion head 74, so that the disc 78 is pushed to move toward the right side, and the disc 78 synchronously drives the limiting column 79 to move through the L-shaped plate 76, and at the same time compresses the first spring 77, so that the extrusion area between the extrusion head 74 and the push plate 53 can be further increased, and the effect of extrusion dehydration is effectively increased; When the secondary extrusion is completed, the extrusion mechanism 7 is reset and moved to the right for a distance, so that the wind tube 851 is away from the disc 78. At this time, the external control valve of the air inlet pipe 82 is opened, and the pushing mechanism 5 continues to work, so the wind wheel 84 outside the screw rod 52 continues to rotate, which is convenient for introducing air into the inner shell 81 through the air inlet pipe 82, and the inner cavity of the inner shell 81 is equipped with an external heating rod to continuously heat the incoming air. At the same time, after the continuous rotation of the wind wheel 84, the wind wheel 84 introduces the introduced heated air into the wind tube 851 through the first vent hole 87 and the second vent hole 56. The continued operation causes the air pressure of the air cylinder 851 to increase, so that the hot air lifts up the multiple exhaust cylinders 853, and the support sleeve 854 outside the exhaust cylinder 853 compresses the second spring 855, so that the exhaust cylinder 853 extends through the through hole 852 to the inner cavity of the shell 1, and the conical top of the exhaust cylinder 853 passes through the inner cavity of the shell 1. The third vent 856 outside the exhaust cylinder 853 transports hot air between the shrimp and crab shell materials, which is convenient for the air supply and drying operation of the shrimp and crab shell materials, effectively improving the effect of rapid dehydration, and after a period of drying, the moisture is evaporated into water vapor and discharged through the filter 11; When the extrusion dehydration and drying operations are completed, the shrimp and crab shell raw materials are located at the upper end of the guide plate 91, and are reset by the pushing mechanism 5 and the extrusion mechanism 7. Then, the output end of the electric push rod 93 drives the connecting piece 94 and the guide plate 91 to tilt upward through the pin shaft, and the output end of the electric push rod 93 reciprocates and retracts, which is convenient for constantly shaking the shrimp and crab shell raw materials on the upper end of the guide plate 91, so that the shrimp and crab shell raw materials are discharged from the opening groove for easy collection.

Claims

1. A raw material extrusion dehydration device for chitosan extraction, comprising a housing (1), characterized in that: The lower end of the shell (1) is connected to a bottom plate (2), a filter screen (11) is installed in the middle of the upper end of the bottom plate (2), legs (3) are connected to the lower end of the bottom plate (2) on all sides, and a material guide mechanism (9) is arranged on the right side of the upper end of the bottom plate (2); The upper end of the shell (1) is provided with a feed port (10), the upper end of the shell (1) is equipped with a feed mechanism (4) corresponding to the position of the feed port (10), the inner cavity of the shell (1) is equipped with a push mechanism (5), the right side of the shell (1) is provided with an open groove, the right side of the bottom plate (2) is connected to an extrusion mechanism (7) through a bracket (6), the outer side of the push mechanism (5) is equipped with a drying mechanism (8), and the extrusion mechanism (7) is movably sleeved on the outer side of the push mechanism (5).

2. The shrimp and crab shell raw material extrusion dehydration device according to claim 1 is characterized in that: The feeding mechanism (4) comprises a feeding hopper (41) mounted on the upper end of the shell (1); the lower part of the inner cavity of the feeding hopper (41) is symmetrically rotatably connected to a rolling roller (42); a driving motor (43) is mounted on the upper end of the shell (1) via a mounting plate; the output end of the driving motor (43) is connected to one end of one of the rolling rollers (42); and meshing gears (44) are mounted on the outer sides of the rolling rollers (42).

3. The shrimp and crab shell raw material extrusion dehydration device according to claim 1 is characterized in that: The pushing mechanism (5) comprises a servo motor (51) mounted on the outside of the housing (1); an output end of the servo motor (51) passes through the housing (1) and extends to the inner cavity thereof, whereupon it is connected to a screw rod (52); one end of the screw rod (52) is connected to a support shaft (54); the support shaft (54) is rotatably connected to the bracket (6); and a pushing plate (53) is mounted on the outside of the screw rod (52).

4. The shrimp and crab shell raw material extrusion dehydration device according to claim 1, characterized in that: The extrusion mechanism (7) comprises an extrusion cylinder (71) mounted on the outside of the bracket (6); the output end of the extrusion cylinder (71) is connected to a fixing plate (72); the fixing plate (72) is movably sleeved on the outside of the support shaft (54); one side of the fixing plate (72) is symmetrically connected to a fixing column (73); one end of the fixing column (73) is commonly connected to an extrusion head (74); the extrusion head (74) corresponds to the position of the opening slot.

5. The shrimp and crab shell raw material extrusion dehydration device according to claim 4, characterized in that: A circular hole (75) is provided in the middle of the extrusion head (74); an L-shaped plate (76) is symmetrically connected to the outside of the extrusion head (74); the inside of each of the L-shaped plates (76) is connected to a first spring (77); one end of each of the first springs (77) is commonly connected to a disk (78); the disk (78) is located in the inner cavity of the circular hole (75); one side of the disk (78) is symmetrically connected to a limiting column (79); two limiting columns (79) are movably plugged into the two L-shaped plates (76) respectively; and the support shaft (54) is located in the inner cavity of the circular hole (75).

6. The shrimp and crab shell raw material extrusion dehydration device according to claim 1, characterized in that: The drying mechanism (8) comprises an outer shell (83) connected to both sides of the push plate (53) and a drying assembly (85); the outer side of the outer shell (83) is equidistantly provided with first vent holes (87); the outer side of the push plate (53) is equidistantly provided with second vent holes (56) that match the positions thereof; the left side of the inner cavity of the shell (1) is connected with an inner shell (81); the inner shell (81) is movably sleeved in the inner cavity of the outer shell (83); the inner wall of the outer shell (83) is in contact with the outer side of the inner shell (81); a wind wheel (84) is mounted on the outer side of the screw rod (52); the outer side of the inner shell (81) is connected with an air inlet pipe (82); one end of the air inlet pipe (82) passes through the shell (1) and extends to the outside.

7. The shrimp and crab shell raw material extrusion dehydration device according to claim 6, characterized in that: The drying assembly (85) comprises a wind tube (851) installed on the right side of the push plate (53), and through holes (852) are equidistantly arranged on the outside of the wind tube (851).

8. The shrimp and crab shell raw material extrusion dehydration device according to claim 7, characterized in that: The inner cavity of the through hole (852) is movably sleeved with an exhaust pipe (853); the outer diameter of the exhaust pipe (853) is the same as the inner diameter of the through hole (852); a support sleeve (854) is installed at the lower outer portion of the exhaust pipe (853); one end of the support sleeve (854) is connected to a second spring (855); one end of the second spring (855) away from the support sleeve (854) is connected to the inner wall of the wind pipe (851); third ventilation holes (856) are equidistantly arranged in the middle of the outer side of the exhaust pipe (853); and the top of the exhaust pipe (853) is conical.

9. The shrimp and crab shell raw material extrusion dehydration device according to claim 7, characterized in that: A sealing sleeve (86) is installed in the middle of the right side of the wind tube (851), and the sealing sleeve (86) is movably sleeved with the support shaft (54).

10. The shrimp and crab shell raw material extrusion dehydration device according to claim 1, characterized in that: The material guide mechanism (9) comprises a support seat (92) installed between two legs (3); a mounting groove is provided at the upper end of the base plate (2); a material guide plate (91) is provided in the inner cavity of the mounting groove; two sides of the material guide plate (91) are rotatably connected to two sides of the inner cavity of the mounting groove via a connecting shaft; a lower notch (12) communicating with the mounting groove is provided at the lower end of the base plate (2); a connecting piece (94) is installed at the lower end of the material guide plate (91); the connecting piece (94) passes through the lower notch (12) and extends to the bottom thereof; an electric push rod (93) is installed at the upper end of the support seat (92); an output end of the electric push rod (93) is rotatably connected to the connecting piece (94) via a pin shaft.

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