Food-grade extraction device for chitosan oligosaccharide

Abstract

The utility model relates to the technical field of chitosan oligosaccharide production and processing, in particular to a chitosan oligosaccharide food-grade extraction device which is characterized in that a stirring mechanism and a squeezing mechanism are arranged in an enzymolysis tank, the squeezing mechanism comprises a squeezing pipe, the squeezing pipe is fixedly installed in the enzymolysis tank, a bottom filtering plate is inserted in the squeezing pipe in a sliding mode, and the bottom filtering plate is connected with the bottom filtering plate in a sliding mode. A squeezing plate is slidably inserted into the squeezing pipe, a connecting column is welded and fixed to the upper end of the squeezing plate, an extrusion plate is welded and fixed to the side wall of the top of the connecting column, the extrusion plate is obliquely arranged, and a fixing ring is welded and fixed to the outer side of the extrusion plate. The squeezing mechanism can generate downward pressure under the action of water flow rotation, the squeezing plate can squeeze crustacean shells of the squeezing pipe, a high-concentration chitosan solution in the crustacean shells is squeezed into the enzymolysis tank for further enzymolysis, the conversion rate is increased, and the production efficiency and benefits are improved for enterprises.

Description

Technical Field

[0001] This utility model relates to the field of chitosan oligosaccharide production and processing technology, specifically a chitosan oligosaccharide food-grade extraction device. Background Technology

[0002] Chitosan oligosaccharides are low-molecular-weight products obtained by the hydrolysis of chitosan, composed of 2-10 glucosamine molecules linked by β-1,4-glycosidic bonds. They retain some of the properties of chitosan but have a smaller molecular weight, higher water solubility, and greater bioactivity. The main characteristics of chitosan oligosaccharides are: 1. Water solubility: Chitosan oligosaccharides are easily soluble in water, making them more widely applicable; 2. Biocompatibility: They are non-toxic to humans and animals, making them suitable for the pharmaceutical and food industries; 3. Bioactivity: They possess various bioactivities, including antibacterial, antioxidant, and immunomodulatory effects.

[0003] Chitosan oligosaccharide is usually prepared by hydrolysis and enzymatic hydrolysis. Hydrolysis is a slow process and the hydrolysis reaction is not complete. If complete hydrolysis of chitosan in the raw material is required, a lot of time is needed. Therefore, after the initial hydrolysis by hydrolysis, enzymatic hydrolysis is usually required to further extract the incompletely extracted raw material. However, in the current technology, enzymatic hydrolysis cannot completely extract chitosan from crustaceans, resulting in waste of raw materials. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, the pre-hydrolyzed raw materials are placed into the pressing mechanism in the enzymatic hydrolysis tank. The pressing mechanism generates downward pressure under the action of water flow rotation, and the pressing plate squeezes the crustacean shell of the pressing tube, forcing the high-concentration chitosan solution inside into the enzymatic hydrolysis tank for further enzymatic hydrolysis, thereby improving the conversion rate and increasing the production efficiency and profits of enterprises. This utility model proposes a food-grade chitosan oligosaccharide extraction device.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a food-grade chitosan oligosaccharide extraction device, including an enzymatic hydrolysis tank, a stirring mechanism is provided inside the enzymatic hydrolysis tank, the stirring mechanism includes a stirring motor and a stirring plate, and the stirring motor and the stirring plate are fixedly connected, and a pressing mechanism is provided inside the enzymatic hydrolysis tank, the pressing mechanism being located inside the stirring mechanism;

[0006] The pressing mechanism includes a pressing tube, which is fixedly installed inside the enzymatic hydrolysis tank. A bottom filter plate is slidably inserted into the inside of the pressing tube, and a pressing plate is slidably inserted into the inside of the pressing tube. A connecting column is welded and fixed to the upper end of the pressing plate, and a squeezing plate is welded and fixed to the side wall at the top of the connecting column. The squeezing plate is inclined, and a fixing ring is welded and fixed to the outer side of the squeezing plate.

[0007] Preferably, the upper end of the enzymatic hydrolysis tank is detachably connected to a top cover via a flange, the stirring motor is detachably mounted on the top of the top cover via bolts, and the top cover is also provided with a feeding port located on the side of the stirring motor. The bottom of the enzymatic hydrolysis tank is provided with a discharge port.

[0008] Preferably, the output shaft of the stirring motor passes through the upper cover and is fixedly connected to a circular mounting plate. The stirring plate is welded and fixed to the lower side of the mounting plate, and a connecting ring is welded and fixed to the lower end of the stirring plate. The stirring plates are arranged in a circular array of four groups.

[0009] Preferably, the enzymatic hydrolysis tank is welded and fixed inside, and four sets of the connecting rods are arranged in a ring array. The other end of the connecting rod is welded and fixed to the outer surface of the pressing tube.

[0010] Preferably, the inner side of the pressing tube is provided with two sets of symmetrically arranged sliding grooves, and the two sides of the bottom filter plate are integrally formed with locking blocks. The bottom filter plate is slidably connected to the inside of the pressing tube through the cooperation of the locking blocks and the sliding grooves.

[0011] Preferably, the pressing plate has material scraping blocks integrally formed on both sides with a right-angled trapezoidal longitudinal section. The pressing plate is slidably connected to the inside of the pressing tube through the cooperation of the material scraping blocks and the sliding groove, and the pressing plate is located above the bottom filter plate.

[0012] Preferably, there are three sets of extrusion plates, and the three sets of extrusion plates are arranged in a ring array.

[0013] The advantages of this utility model are:

[0014] 1. This invention utilizes the rotation of a stirring motor in a stirring mechanism to drive the rotation of stirring plates inside the enzymatic hydrolysis tank. The rotation of the four stirring plates creates a rotating water flow inside the tank. The crustacean's shell is placed between the bottom filter plate and the pressing plate in the pressing mechanism. The rotating water flow impacts the upper pressing plate, providing downward pressure to the pressing plate and pressing the raw material between the pressing plate and the bottom filter plate. This forces the high-concentration chitosan solution inside the material into the enzymatic hydrolysis tank for further enzymatic hydrolysis, improving the conversion rate and increasing production efficiency and profits for enterprises. Furthermore, all components within the device are made of food-grade 316 stainless steel, ensuring that the production process does not contaminate the raw materials.

[0015] 2. This utility model extracts a high-concentration chitosan solution by pressing the raw material between the pressing plate and the bottom filter plate. This not only improves the conversion rate of enzymatic hydrolysis within the same time, but also ensures that the raw material remains between the pressing plate and the bottom filter plate, with only a small portion of broken shells entering the enzymatic hydrolysis tank. This shortens the time required to filter residues during subsequent processing, further improving production efficiency and reducing the difficulty of subsequent processing.

[0016] 3. The bottom filter plate of this utility model is installed by simple snap-fit, so it can be quickly disassembled and reassembled afterward to facilitate the removal of crustacean shells inside the pressing tube. In addition, a shovel block is provided on the side of the extrusion plate above the bottom filter plate. The shovel block restricts the pressing mechanism from rotating with the water flow. At the same time, as the shovel block moves downward, it can shovel the raw material in the chute into the space between the pressing plate and the bottom filter plate, reducing material waste. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an internal cross-sectional view of the enzymatic hydrolysis vessel of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the stirring plate of this utility model;

[0021] Figure 4 This is a schematic diagram of the pressing mechanism of this utility model;

[0022] Figure 5 This is an internal sectional view of the pressing mechanism of this utility model;

[0023] Figure 6 This is an internal cross-sectional view of the pressing tube of this utility model.

[0024] In the diagram: 1. Stirring mechanism; 2. Pressing mechanism; 101. Enzymatic hydrolysis tank; 102. Stirring motor; 103. Stirring plate; 104. Top cover; 105. Feeding port; 106. Mounting plate; 107. Connecting ring; 108. Discharge port; 109. Connecting rod; 201. Pressing pipe; 202. Bottom filter plate; 203. Pressing plate; 204. Connecting column; 205. Extrusion plate; 206. Fixing ring; 207. Slide groove; 208. Clamping block; 209. Shovel block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] The following is in conjunction with the appendix Figure 1-6 This application provides further details:

[0027] This application discloses a food-grade chitosan oligosaccharide extraction device, referring to... Figure 1 The enzymatic hydrolysis tank 101 includes a top cover 104 detachably connected to the upper end of the enzymatic hydrolysis tank 101 via a flange. A stirring motor 102 is detachably mounted on the top of the top cover 104 via bolts. The top cover 104 is also provided with a feeding port 105, which is located on the side of the stirring motor 102. The bottom of the enzymatic hydrolysis tank 101 is provided with a discharge port 108, which is equipped with a discharge valve. The shells of crustaceans are added into the enzymatic hydrolysis tank 101 by opening the top cover 104. The feeding port 105 is also rotatably connected to the cover via a damping bearing. Chitosanase is added into the enzymatic hydrolysis tank 101 through the feeding port 105.

[0028] Reference Figure 2 The enzymatic hydrolysis tank 101 is equipped with a stirring mechanism 1, which includes a stirring motor 102 and a stirring plate 103. The stirring motor 102 and the stirring plate 103 are fixedly connected. The output shaft of the stirring motor 102 passes through the upper cover 104 and is fixedly connected to a circular mounting plate 106. The mounting plate 106 and the motor output shaft are welded and fixed. The stirring plate 103 is welded and fixed to the lower side of the mounting plate 106. A connecting ring 107 is welded and fixed to the lower end of the stirring plate 103. The stirring plates 103 are arranged in a ring array of four groups. The rotation of the stirring motor 102 drives the stirring plate 103 to rotate. The rotation of the stirring plate 103 forms a rotating water flow inside the enzymatic hydrolysis tank 101.

[0029] Reference Figure 2 The enzymatic hydrolysis tank 101 is equipped with a pressing mechanism 2 inside. The pressing mechanism 2 is located inside the stirring mechanism 1. The pressing mechanism 2 includes a pressing tube 201. A connecting rod 109 is welded and fixed inside the enzymatic hydrolysis tank 101. The connecting rod 109 is arranged in a ring array of four sets. The other end of the connecting rod 109 is welded and fixed to the outer surface of the pressing tube 201.

[0030] Reference Figure 2 , Figure 4 and Figure 5A bottom filter plate 202 is slidably inserted into the inside of the pressing tube 201. Two sets of symmetrically arranged sliding grooves 207 are opened on the inner side of the pressing tube 201. The bottom filter plate 202 has a locking block 208 integrally formed on both sides. The bottom filter plate 202 is slidably connected to the inside of the pressing tube 201 through the cooperation of the locking block 208 and the sliding groove 207. The bottom filter plate 202 is simply snapped in for installation, so it can be quickly disassembled and installed later to facilitate the removal of crustacean shells inside the pressing tube 201.

[0031] Reference Figure 5 A pressing plate 203 is slidably inserted into the inside of the pressing tube 201. Filter screens are installed inside both the pressing plate 203 and the bottom filter plate 202. The pressing plate 203 has integrally formed shovel blocks 209 with a right-angled trapezoidal longitudinal section on both sides. The pressing plate 203 is slidably connected to the inside of the pressing tube 201 through the cooperation of the shovel blocks 209 and the chute 207. The pressing plate 203 is located above the bottom filter plate 202. The shovel blocks 209 restrict the pressing mechanism 2 from rotating with the water flow, so that the pressing mechanism 2 can be subjected to greater downward pressure from the water flow. At the same time, as the shovel blocks 209 move downward, they can shovel the raw material in the chute 207 into the space between the pressing plate 203 and the bottom filter plate 202, reducing material waste.

[0032] Reference Figure 4 and Figure 5 A connecting column 204 is welded and fixed to the upper end of the pressing plate 203. An extrusion plate 205 is welded and fixed to the side wall of the top of the connecting column 204. The extrusion plate 205 is inclined and a fixing ring 206 is welded and fixed to the outer side of the extrusion plate 205. The three sets of extrusion plates 205 are arranged in a ring array. The non-rotating extrusion plate 205 is impacted by the rotating water flow. The extrusion plate 205 will be subjected to the downward pressure of the rotating water flow, thereby pressing the raw material between the pressing plate 203 and the bottom filter plate 202, and squeezing the high-concentration chitosan solution inside into the enzymatic hydrolysis tank 101 for further enzymatic hydrolysis. The length of the connecting column 204 is sufficient, so the extrusion plate 205 is always exposed at the upper end of the pressing tube 201 throughout the process. The extrusion plate 205 can provide good downward pressure for the pressing plate 203.

[0033] Working principle: When using this device, first open the top cover 104 of the enzymatic hydrolysis tank 101 and remove the pressing plate 205 at the top of the pressing tube 201. Then, put the pre-hydrolyzed raw material into the bottom filter plate 202 inside the pressing tube 201. Next, put the pressing plate 203 along with the pressing plate 205 into the pressing tube 201. Close the valve in the discharge port 108. Then, add the chitosan hydrolytic enzyme solution into the tank from the top of the enzymatic hydrolysis tank 101 or the feeding port 105 inside the top cover 104. The solution level should be below the surface of the tank. After passing through the pressing plate 205 in the pressing mechanism 2, the top cover 104 is locked and the stirring motor 102 is started. The rotation of the stirring motor 102 drives the stirring plate 103 to rotate. The rotation of the stirring plate 103 forms a rotating water flow inside the enzymatic hydrolysis tank 101. The rotating water flow impacts the non-rotating pressing plate 205. The pressing plate 205 is subjected to the downward pressure of the rotating water flow, thereby pressing the raw material between the pressing plate 203 and the bottom filter plate 202, and squeezing the high-concentration chitosan solution inside into the enzymatic hydrolysis tank 101 for further enzymatic hydrolysis.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A food-grade chitosan oligosaccharide extraction device, characterized in that: The enzymatic hydrolysis tank (101) is provided with a stirring mechanism (1) inside the enzymatic hydrolysis tank (101). The stirring mechanism (1) includes a stirring motor (102) and a stirring plate (103), and the stirring motor (102) and the stirring plate (103) are fixedly connected. The enzymatic hydrolysis tank (101) is provided with a pressing mechanism (2) inside the enzymatic hydrolysis tank (101), and the pressing mechanism (2) is located inside the stirring mechanism (1). The pressing mechanism (2) includes a pressing tube (201), which is fixedly installed inside the enzymatic hydrolysis tank (101). A bottom filter plate (202) is slidably inserted into the inside of the pressing tube (201), and a pressing plate (203) is slidably inserted into the inside of the pressing tube (201). A connecting column (204) is welded and fixed to the upper end of the pressing plate (203). A squeezing plate (205) is welded and fixed to the side wall of the top of the connecting column (204). The squeezing plate (205) is inclined, and a fixing ring (206) is welded and fixed to the outer side of the squeezing plate (205).

2. The chitosan oligosaccharide food-grade extraction device according to claim 1, characterized in that: The upper end of the enzymatic hydrolysis tank (101) is detachably connected to a top cover (104) via a flange. The stirring motor (102) is detachably mounted on the top of the top cover (104) via bolts. The top cover (104) is also provided with a feeding port (105), which is located on the side of the stirring motor (102). The bottom of the enzymatic hydrolysis tank (101) is provided with a discharge port (108).

3. The chitosan oligosaccharide food-grade extraction device according to claim 2, characterized in that: The output shaft of the stirring motor (102) passes through the upper cover (104) and is fixedly connected to a circular mounting plate (106). The stirring plate (103) is welded and fixed to the lower side of the mounting plate (106), and a connecting ring (107) is welded and fixed to the lower end of the stirring plate (103). The stirring plates (103) are arranged in a ring array of four groups.

4. The chitosan oligosaccharide food-grade extraction device according to claim 1, characterized in that: The enzymatic hydrolysis tank (101) is welded and fixed inside with connecting rods (109). The connecting rods (109) are arranged in a ring array of four groups. The other end of the connecting rods (109) is welded and fixed to the outer surface of the pressing tube (201).

5. The chitosan oligosaccharide food-grade extraction device according to claim 1, characterized in that: The inner side of the pressing tube (201) is provided with two sets of symmetrically arranged sliding grooves (207), and the bottom filter plate (202) is integrally formed with locking blocks (208) on both sides. The bottom filter plate (202) is slidably connected to the inside of the pressing tube (201) through the cooperation of the locking blocks (208) and the sliding grooves (207).

6. The chitosan oligosaccharide food-grade extraction device according to claim 5, characterized in that: The pressing plate (203) has integrally formed material scraping blocks (209) with a right-angled trapezoidal longitudinal section on both sides. The pressing plate (203) is slidably connected to the inside of the pressing tube (201) through the cooperation of the material scraping blocks (209) and the sliding groove (207), and the pressing plate (203) is located above the bottom filter plate (202).

7. The chitosan oligosaccharide food-grade extraction device according to claim 1, characterized in that: There are three sets of extrusion plates (205), and the three sets of extrusion plates (205) are arranged in a ring array.

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