Chitosan electrolysis device capable of controlling pH value

Abstract

The utility model belongs to the technical field of electrolytic bath equipment, and particularly relates to a chitosan electrolysis device capable of controlling the pH value, which comprises a light-avoiding electrolytic tank, a stirring device is arranged in the light-avoiding electrolytic tank, the top of the light-avoiding electrolytic tank is fixedly connected with an electrode anode and an electrode cathode respectively, the bottom ends of the electrode anode and the electrode cathode extend into the light-avoiding electrolytic tank, and the stirring device is arranged in the light-avoiding electrolytic tank. A pH sensor is fixedly connected to the bottom of the photophobic electrolytic tank, the bottom of one side of the photophobic electrolytic tank is communicated with a liquid supplementing barrel used for containing an acetic acid supplementing solution through a flow control part, the flow control part is electrically connected with the pH sensor, the top of the other side of the photophobic electrolytic tank is communicated with a tail gas recovery device, and a constant-temperature heating device is fixedly connected to the side wall of the bottom of the photophobic electrolytic tank. According to the device, the pH sensor and the flow control part cooperate to supplement acetic acid in the liquid supplementing cylinder into the photophobic electrolytic tank, so that the pH value of the electrolyte in the photophobic electrolytic tank is kept in a stable range.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrolytic tank equipment, and particularly relates to a chitosan electrolysis device capable of controlling pH value. Background Art

[0002] Chitin has a very large molecular weight and is insoluble in everything, so it is difficult to be absorbed; chitosan is the deacetylation product of chitosan, but chitosan only dissolves in acidic solutions, which limits its biological activity; chitosan oligosaccharides are the degradation products of chitosan. Chitosan oligosaccharides are the only positively charged, alkaline, water-soluble polysaccharides found in nature. They have excellent biological activity and are known as the sixth major life element. Since its discovery, chitosan oligosaccharides have become a hot topic for researchers and have been listed as a key research project for sugar engineering in various countries.

[0003] Common degradation methods for chitosan oligosaccharides include acid hydrolysis, chemical oxidation degradation, enzyme degradation and electrochemical method. Due to the high efficiency of electrochemical method, it avoids the problem of low yield like acid hydrolysis. It is flexible in application and easy to realize automation, which is conducive to simplifying equipment and reducing operation intensity.

[0004] At present, chitosan oligosaccharides are prepared by using chitosan as raw material and acetic acid aqueous solution with NaCl added as electrolyte. However, as the electrolysis temperature increases, acetic acid will volatilize, the pH value of the electrolyte will increase, and the electrolysis rate will decrease. Therefore, a chitosan electrolysis device with controllable pH value is urgently needed to solve this problem. Utility Model Content

[0005] The utility model aims to provide a chitosan electrolysis device capable of controlling pH value, so as to solve the above problems.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] A chitosan electrolysis device capable of controlling pH value comprises: a photo-proof electrolysis cell, a stirring device is arranged in the photo-proof electrolysis cell, an electrode anode and an electrode cathode are respectively fixedly connected to the top of the photo-proof electrolysis cell, the bottom ends of the electrode anode and the electrode cathode extend into the photo-proof electrolysis cell, a pH sensor is fixedly connected to the bottom of the photo-proof electrolysis cell, a fluid replenishment cylinder for containing acetic acid replenishing solution is connected to the bottom of one side of the photo-proof electrolysis cell through a flow control part, the flow control part is electrically connected to the pH sensor, an exhaust gas recovery device is connected to the top of the other side of the photo-proof electrolysis cell, and a constant temperature heating device is fixedly connected to the side wall of the bottom of the photo-proof electrolysis cell.

[0008] Preferably, the flow control unit comprises a submersible pump and a controller, the controller is electrically connected to the submersible pump, and the controller is electrically connected to the pH sensor;

[0009] The liquid inlet end of the submersible pump is communicated with one side of the bottom of the liquid replenishing cylinder, and the liquid outlet end of the submersible pump is communicated with the bottom of the photoelectrically protected electrolytic cell.

[0010] Preferably, a cover is detachably connected to the top of the fluid infusion cylinder, and a one-way air inlet hole is provided on the cover.

[0011] Preferably, the stirring device comprises a stirring blade, the stirring blade is rotatably connected in the photoelectrically protected hydrolysis cell, and the top end of the stirring blade is transmission-connected to a driving unit.

[0012] Preferably, the driving part comprises a motor, a fixed end of the motor is fixedly connected to the top of the photoelectrically protected hydrolysis cell, and an output shaft of the motor is axially connected to the top end of the stirring blade.

[0013] Preferably, the exhaust gas recovery device comprises a gas washing bottle, a vertical sliding rod is vertically movably connected in the gas washing bottle, a handle is coaxially fixed to the bottom end of the vertical sliding rod, a frustum-shaped plug is coaxially fixed to the top end of the vertical sliding rod, and a top opening is provided at the top of the gas washing bottle; a sealing ring is embedded in the sliding position between the bottom of the gas washing bottle and the vertical sliding rod, and the sealing ring is coaxially arranged on the outside of the vertical sliding rod;

[0014] The gas washing bottle is fixedly connected to one side of the photoelectrically protected hydrolysis cell, the bottom side of the gas washing bottle is connected to the gas outlet of the air pump, and the gas inlet of the air pump is connected to the top side of the photoelectrically protected hydrolysis cell;

[0015] The top of the gas washing bottle is connected with a combustion part through a top opening.

[0016] Preferably, the combustion part includes a baffle ring, which is coaxially fixed to the top of the gas washing bottle, and has a plurality of air holes arranged in a matrix and circumferentially evenly spaced. An electric lighter is fixed to the inner wall of the baffle ring, and the ignition end of the electric lighter is located directly above the top opening.

[0017] Compared with the prior art, the utility model has the following advantages and technical effects:

[0018] When in use, chitosan is mixed with acetic acid and NaCl solution and then injected into a fluid infusion cylinder. The solution is injected into the photo-proof electrolytic cell through a flow control unit arranged in the fluid infusion cylinder, and the liquid level is made higher than the bottom ends of the electrode anode and the electrode cathode. While the flow control unit injects the solution into the photo-proof electrolytic cell, the air in the photo-proof electrolytic cell can be discharged through the tail gas recovery device to ensure smooth injection of the solution. When the solution is injected, the electrode anode and the electrode cathode are started to start electrolysis. At this time, acetic acid solution is added to the fluid infusion cylinder, and the pH sensor constantly detects the pH value of the electrolyte. When the pH value of the electrolyte increases, it means that the acetic acid content decreases. At this time, the acetic acid in the fluid infusion cylinder is added to the photo-proof electrolytic cell through the flow control unit, thereby keeping the pH value of the electrolyte in the photo-proof electrolytic cell within a stable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor:

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a cross-sectional view of the structure of the utility model;

[0022] Figure 3 For this utility model Figure 2 A partial enlarged view of the middle part;

[0023] Among them, 1. Photoelectrically protected electrolytic cell; 2. Fluid replenishing cylinder; 3. Submersible pump; 4. Cover; 5. Motor; 6. pH sensor; 7. Stirring blade; 8. Electrode anode; 9. Electrode cathode; 10. Air pump; 11. Gas washing bottle; 12. Top opening; 13. Retaining ring; 14. Air vent; 15. Electric lighter; 16. Conical plug; 17. Vertical slide rod; 18. Handle; 19. Sealing ring; 20. One-way air inlet; 21. Constant temperature heating device. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Reference Figures 1 to 3 The utility model discloses a chitosan electrolysis device capable of controlling pH value, comprising: a photo-proof electrolysis cell 1, a stirring device is arranged in the photo-proof electrolysis cell 1, an electrode anode 8 and an electrode cathode 9 are respectively fixedly connected to the top of the photo-proof electrolysis cell 1, the bottom ends of the electrode anode 8 and the electrode cathode 9 extend into the photo-proof electrolysis cell 1, a pH sensor 6 is fixedly connected to the bottom of the photo-proof electrolysis cell 1, a fluid replenishment cylinder 2 for containing acetic acid replenishing solution is connected to the bottom of one side of the photo-proof electrolysis cell 1 through a flow control part, the flow control part is electrically connected to the pH sensor 6, an exhaust gas recovery device is connected to the top of the other side of the photo-proof electrolysis cell 1, and a constant temperature heating device 21 is fixedly connected to the side wall of the bottom of the photo-proof electrolysis cell 1.

[0027] When in use, chitosan is mixed with acetic acid and NaCl solution and then injected into the fluid infusion cylinder 2. The solution is injected into the photo-proof electrolytic cell 1 through the flow control unit provided in the fluid infusion cylinder 2, and the liquid level is made higher than the bottom ends of the electrode anode 8 and the electrode cathode 9. While the flow control unit injects the solution into the photo-proof electrolytic cell 1, the air in the photo-proof electrolytic cell 1 can be discharged through the tail gas recovery device to ensure the smooth injection of the solution. When the solution is injected, the constant temperature heating device 21 is started to keep the solution temperature constant, and the electrode anode 8 and the electrode cathode 9 are started at the same time to start electrolysis. At this time, acetic acid solution is supplemented in the fluid infusion cylinder 2, and the pH sensor 6 constantly detects the pH value of the electrolyte. When the pH value of the electrolyte increases, it means that the acetic acid content decreases. At this time, the acetic acid in the fluid infusion cylinder 2 is supplemented into the photo-proof electrolytic cell 1 through the flow control unit, thereby keeping the pH value of the electrolyte in the photo-proof electrolytic cell 1 within a stable range.

[0028] Since the electrolysis of a solution containing NaCl, acetic acid and chitosan will produce chlorine and hydrogen, and the mixture of chlorine and hydrogen is prone to explosion when exposed to light, there is a danger. Therefore, the photo-shielding electrolytic cell 1 is provided with a light-shielding layer, and the photo-shielding electrolytic cell 1 is set in a sealed form, and the solution can only be injected through the liquid replenishing cylinder 2, thereby ensuring the safety of the electrolysis process.

[0029] According to a further optimization scheme, the flow control unit includes a submersible pump 3 and a controller, the controller is electrically connected to the submersible pump 3, and the controller is electrically connected to the pH sensor 6;

[0030] The liquid inlet end of the submersible pump 3 is communicated with one side of the bottom of the liquid replenishing cylinder 2 , and the liquid outlet end of the submersible pump 3 is communicated with the bottom of the photo-shielding electrolytic cell 1 .

[0031] The controller is preferably a PLC programmable controller, and the pH sensor 6 and the submersible pump 3 are electrically connected to the controller. When the pH value of the solution in the photo-protective electrolysis cell 1 increases, the pH sensor 6 transmits the pH data to the controller, and the controller controls the opening and closing of the submersible pump 3 to replenish the acetic acid solution in the fluid replenishment cylinder 2, thereby maintaining the pH value of the solution in the photo-protective electrolysis cell 1.

[0032] According to a further optimized solution, a cover 4 is detachably connected to the top of the fluid infusion cylinder 2 , and a one-way air inlet hole 20 is provided on the cover 4 .

[0033] The cover 4 can prevent acetic acid from volatilizing. At the same time, a one-way air inlet 20 is provided on the cover 4 for replenishing air into the fluid replenishing cylinder 2 to achieve air pressure balance in the fluid replenishing cylinder 2. Since gas can only enter the fluid replenishing cylinder 2 through the one-way air inlet 20, it can prevent acetic acid from escaping.

[0034] According to a further optimized solution, the stirring device includes a stirring blade 7, which is rotatably connected in the photoelectrically shielded hydrolysis cell 1, and the top end of the stirring blade 7 is transmission-connected to a driving part.

[0035] According to a further optimized solution, the driving unit includes a motor 5 , a fixed end of the motor 5 is fixedly connected to the top of the photoelectrically shielded hydrolysis cell 1 , and an output shaft of the motor 5 is axially connected to the top end of the stirring blade 7 .

[0036] By rotating the stirring blade 7 through the motor 5 , the acetic acid solution just entering the photo-shielding electrolytic cell 1 can be mixed with the original solution evenly, thereby ensuring the accuracy of the pH value measured by the pH sensor 6 .

[0037] Further optimizing the scheme, the tail gas recovery device includes a gas washing bottle 11, a vertical sliding rod 17 is vertically movably connected in the gas washing bottle 11, a handle 18 is coaxially fixed to the bottom end of the vertical sliding rod 17, a frustum-shaped plug 16 is coaxially fixed to the top end of the vertical sliding rod 17, and a top opening 12 is opened at the top of the gas washing bottle 11; a sealing ring 19 is embedded in the sliding part between the bottom of the gas washing bottle 11 and the vertical sliding rod 17, and the sealing ring 19 is coaxially arranged on the outside of the vertical sliding rod 17;

[0038] The gas washing bottle 11 is fixedly connected to one side of the photo-shielding electrolytic cell 1, the bottom side of the gas washing bottle 11 is connected to the gas outlet end of the air pump 10, and the gas inlet end of the air pump 10 is connected to the top side of the photo-shielding electrolytic cell 1;

[0039] The top of the gas washing bottle 11 is connected to a combustion part through a top opening 12 .

[0040] A further optimized solution is that the combustion part includes a baffle ring 13, which is coaxially fixed to the top of the gas washing bottle 11, and a plurality of air holes 14 arranged in a matrix are evenly spaced circumferentially on the baffle ring 13. An electric lighter 15 is fixed to the inner wall of the baffle ring 13, and the ignition end of the electric lighter 15 is located directly above the top opening 12.

[0041] During use, when chlorine and hydrogen are generated by electrolysis in the photoelectrically shielded electrolytic cell 1, the generated gas is sucked into the bottom of the gas washing bottle 11 through the air pump 10. The gas washing bottle 11 contains an organic solvent such as carbon tetrachloride solvent for absorbing chlorine. After the mixed gas of chlorine and hydrogen is passed into the gas washing bottle 11, the chlorine is absorbed by the carbon tetrachloride, and the hydrogen can enter the retaining ring 13 through the top opening 12 at the top of the gas washing bottle 11. The vertical slide rod 17 is driven up and down by the handle 18 to make the cone-shaped plug 16 approach or move away. The top opening 12, since the cross-section of the frustum-shaped plug 16 is frustum-shaped, the size of the frustum-shaped plug 16 matches the size of the top opening 12. When the frustum-shaped plug 16 is close to or away from the top opening 12, the flow of hydrogen entering the baffle ring 13 can be controlled to avoid hydrogen explosion caused by excessive flow. The electric spark generated by the electric igniter 15 ignites the hydrogen. The baffle ring 13 is used to prevent wind and prevent hydrogen from escaping into the air. At the same time, the setting of a plurality of air holes 14 is used to supplement oxygen so that the generated hydrogen is completely consumed through combustion.

[0042] Furthermore, the carbon tetrachloride solvent can be replaced with a sodium hydroxide solution, and a solution containing sodium hypochlorite is generated by the reaction of chlorine gas and the sodium hydroxide solution. The absorption liquid can be collected and the sodium hypochlorite can be extracted, thereby improving the utilization value of the absorption liquid.

[0043] Furthermore, the top opening 12 can also be connected to the air inlet of an air pump, and the hydrogen can be collected into a cylinder through the air pump, and the generated hydrogen can be recycled.

[0044] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A chitosan electrolysis device capable of controlling pH value, characterized in that: include: A photo-proof electrolysis cell (1), wherein a stirring device is provided in the photo-proof electrolysis cell (1), an electrode anode (8) and an electrode cathode (9) are respectively fixedly connected to the top of the photo-proof electrolysis cell (1), the bottom ends of the electrode anode (8) and the electrode cathode (9) extend into the photo-proof electrolysis cell (1), a pH sensor (6) is fixedly connected to the bottom of the photo-proof electrolysis cell (1), a fluid replenishment cylinder (2) for containing acetic acid replenishing solution is connected to the bottom of one side of the photo-proof electrolysis cell (1) through a flow control unit, the flow control unit is electrically connected to the pH sensor (6), the top of the other side of the photo-proof electrolysis cell (1) is connected to an exhaust gas recovery device, and a constant temperature heating device (21) is fixedly connected to the side wall of the bottom of the photo-proof electrolysis cell (1).

2. The chitosan electrolysis device capable of controlling pH value according to claim 1, characterized in that: The flow control unit comprises a submersible pump (3) and a controller, wherein the controller is electrically connected to the submersible pump (3), and the controller is electrically connected to the pH sensor (6); The liquid inlet end of the submersible pump (3) is connected to one side of the bottom of the liquid replenishing cylinder (2), and the liquid outlet end of the submersible pump (3) is connected to the bottom of the photoelectrically protected electrolytic cell (1).

3. The chitosan electrolysis device capable of controlling pH value according to claim 1, characterized in that: The top of the fluid replenishing cylinder (2) is detachably connected to a cover (4), and a one-way air inlet hole (20) is provided on the cover (4).

4. The chitosan electrolysis device capable of controlling pH value according to claim 1, characterized in that: The stirring device comprises a stirring blade (7), the stirring blade (7) is rotatably connected in the photoelectrically protected electrolytic cell (1), and the top end of the stirring blade (7) is transmission-connected to a driving unit.

5. The chitosan electrolysis device capable of controlling pH value according to claim 4, characterized in that: The driving part comprises a motor (5), the fixed end of the motor (5) is fixedly connected to the top of the photoelectrically protected hydrolysis cell (1), and the output shaft of the motor (5) is axially connected to the top end of the stirring blade (7).

6. The chitosan electrolysis device capable of controlling pH value according to claim 1, characterized in that: The tail gas recovery device comprises a gas washing bottle (11), a vertical sliding rod (17) is vertically movably connected inside the gas washing bottle (11), a handle (18) is coaxially fixedly connected to the bottom end of the vertical sliding rod (17), a frustum-shaped plug (16) is coaxially fixedly connected to the top end of the vertical sliding rod (17), and a top opening (12) is provided at the top of the gas washing bottle (11); a sealing ring (19) is embedded in the sliding position between the bottom of the gas washing bottle (11) and the vertical sliding rod (17), and the sealing ring (19) is coaxially arranged on the outside of the vertical sliding rod (17); The gas washing bottle (11) is fixedly connected to one side of the photoelectrically protected hydrolysis cell (1), the bottom side of the gas washing bottle (11) is connected to the gas outlet of the gas pump (10), and the gas inlet of the gas pump (10) is connected to the top side of the photoelectrically protected hydrolysis cell (1); The top of the gas washing bottle (11) is connected to a combustion part through a top opening (12).

7. A chitosan electrolysis device capable of controlling pH value according to claim 6, characterized in that: The combustion part comprises a baffle ring (13), the baffle ring (13) is coaxially fixed to the top of the gas washing bottle (11), a plurality of air holes (14) arranged in a matrix are circumferentially evenly spaced and arranged on the baffle ring (13), an electric igniter (15) is fixed to the inner wall of the baffle ring (13), and an ignition end of the electric igniter (15) is located directly above the top opening (12).

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