Electrolytic hydrogen production device for laboratory

Abstract

The utility model discloses an electrolytic hydrogen production device for a laboratory, and belongs to the technical field of hydrogen production equipment for the laboratory. The device comprises a shell, an electrolytic tank, non-return assemblies and partition plates, the electrolytic tank is fixed in the shell through a supporting frame, the non-return assemblies fixed to the inner wall of the shell are arranged at the left end and the right end of the electrolytic tank, the two partition plates are arranged in the electrolytic tank, and gaps are formed between the lower ends of the partition plates and the lower end of the electrolytic tank; the electrolytic tank is sequentially divided into an oxygen production area, a mixing area and a hydrogen production area by the two partition plates, electrode bars are arranged in the oxygen production area and the hydrogen production area, a positive electrode connector and a negative electrode connector are arranged at the lower ends of the interiors of the oxygen production area and the hydrogen production area respectively, and the positive electrode connector and the negative electrode connector are connected with the electrode bars through buckle assemblies. According to the device, the buckle assembly can realize quick disassembly and assembly of the electrode bar, the positive electrode connector and the negative electrode connector, the operation is simple and convenient, and the working efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of laboratory hydrogen production equipment, and specifically relates to an electrolytic hydrogen production device for laboratory. BACKGROUND

[0002] Electrolysis of water is a relatively convenient method for producing hydrogen; direct current is introduced into an electrolytic cell filled with electrolyte, and water molecules decompose into hydrogen and oxygen on the electrode; electrolysis of water is convenient, fast and efficient, and has a wide range of applications in laboratories.

[0003] Generally, a proper amount of dilute sulfuric acid or sodium hydroxide is added to water during electrolysis of water in a laboratory to increase the conductivity of water, accelerate the reaction rate of electrolysis of water and improve the generation speed of hydrogen and oxygen; under normal circumstances, the experimenter directly pours the dilute sulfuric acid or sodium hydroxide into water without stirring, so that the electrolyte is not fully mixed, and the local concentration is too high or too low, which is not conducive to the experiment and observation.

[0004] Moreover, after multiple tests, if the electrolytic cell is not cleaned in time, the electrode rod in the electrolytic cell is easily corroded and damaged, and if the damaged electrode rod is not replaced in time, the experimental results are affected, and there is a certain safety hazard, but the existing electrode rod replacement requires disassembly of the electrolytic cell, which is time-consuming and laborious. UTILITY MODEL CONTENTS

[0005] The utility model solves the problems that the electrolyte in the electrolytic cell cannot be stirred, the electrolyte is not fully mixed, the reaction rate is affected, and the electrode rod is inconvenient and time-consuming to replace.

[0006] To solve the above technical problems, the utility model provides the following technical scheme:

[0007] An electrolytic hydrogen production device for laboratory, comprising a shell, an electrolytic cell, a check valve assembly and a partition plate, the inside of the shell is fixed with the electrolytic cell through a support frame, check valve assemblies are arranged at the left and right ends of the electrolytic cell and fixed to the inner wall of the shell, and hydrogen or oxygen generated by the electrolytic cell is first introduced into a water tank and then discharged;

[0008] The electrolytic cell is provided with two partition plates, and a gap is arranged between the lower end of the partition plate and the lower end of the electrolytic cell;

[0009] The two partition plates sequentially divide the electrolytic cell into an oxygen production area, a mixing area and a hydrogen production area;

[0010] The oxygen production area is connected to the check valve assembly through an oxygen pipe above the oxygen production area, the mixing area is provided with a stirring assembly for mixing water and a catalyst, the hydrogen production area is connected to the check valve assembly through a hydrogen pipe above the hydrogen production area, and the check valve assembly can prevent the generated gas from flowing in the reverse direction, thereby ensuring stability;

[0011] The inside of the oxygen production area and the hydrogen production area is provided with an electrode rod;

[0012] The inside lower end of the oxygen production area and the hydrogen production area is respectively provided with a positive electrode connector and a negative electrode connector, and the positive electrode connector and the negative electrode connector are connected with the electrode rod through a buckle assembly, which can realize quick disassembly and installation of the electrode rod and the positive electrode connector and the negative electrode connector, is simple and convenient to operate, saves time and effort, and is beneficial to improve work efficiency.

[0013] The laboratory electrolytic hydrogen production device, the shell and the electrolytic cell are made of transparent material, and the physical phenomena in the electrolytic cell can be clearly observed by the experimenters, which is convenient for the experimenters to observe and record, and the upper end of the shell and the electrolytic cell is provided with a detachable cover, which is convenient for later operation.

[0014] The laboratory electrolytic hydrogen production device, the non-return assembly includes a water tank and an air outlet pipe, the oxygen pipe and the hydrogen pipe are respectively connected with two water tanks, the upper end of the water tank is provided with an air outlet pipe, and the outlet of the air outlet pipe penetrates through the side wall of the shell and extends to the outside of the shell.

[0015] The laboratory electrolytic hydrogen production device, the stirring assembly includes a motor, a stirring shaft and stirring blades, the motor is located at the lower end of the electrolytic cell and is fixedly connected with the electrolytic cell, the stirring shaft is uniformly provided with stirring blades, and the stirring shaft and the stirring blades are located in the mixing area, the lower end of the stirring shaft is connected with the output end of the motor, and after adding appropriate amount of water and sodium hydroxide into the electrolytic cell, the stirring assembly can fully mix the water and sodium hydroxide.

[0016] The laboratory electrolytic hydrogen production device, the positive electrode connector and the negative electrode connector are fixedly connected with the bottom end of the electrolytic cell, and the upper end of the positive electrode connector and the negative electrode connector is connected with the buckle assembly.

[0017] The laboratory electrolytic hydrogen production device, the lower end of the electrode rod is provided with a plug rod, the plug rod is connected with the positive electrode connector and the negative electrode connector through the buckle assembly, and the side wall of the plug rod is provided with a clamping groove.

[0018] The laboratory electrolytic hydrogen production device, the buckle assembly includes a matching groove, a spring groove, a spring and a clamping block, the matching groove is a through groove, the upper end of the positive electrode connector and the negative electrode connector is inlaid at the lower end of the matching groove, the plug rod is inlaid at the upper end of the matching groove, the side wall of the matching groove is provided with a horizontal spring groove, and the spring groove is provided with a spring and a clamping block.

[0019] One end of the spring is fixedly connected with the bottom end of the spring groove, and the other end of the spring is connected with the bottom end of the clamping block. When the electrode rod is installed, the insertion rod is inserted into the matching groove of the buckle assembly, and after the insertion rod is in contact with the joint of the positive and negative electrodes, the electrode rod can be rotated, the clamping groove on the insertion rod is rotated to the position of the spring groove, the spring acts on the clamping block, and the clamping block is inserted into the clamping groove. At this time, the electrode rod is fixed.

[0020] The opening left and right sides of the clamping groove are inclined surfaces, and the opening upper and lower sides are vertical surfaces. The left and right sides of the front end of the clamping block are inclined surfaces, and the upper and lower sides of the front end are vertical surfaces. When the clamping block is inserted into the clamping groove, it will not shake up and down, ensuring that the clamping block will not slide up and down and come off the clamping groove, and ensuring the stability of the electrode rod.

[0021] The position of the clamping groove corresponds to the position of the clamping block when the insertion rod is connected with the positive electrode connector or the negative electrode connector.

[0022] Advantages: Compared with the prior art, the present application has the following advantages:

[0023] (1) The mixing area of the laboratory electrolytic hydrogen production device is provided with a stirring assembly. After a proper amount of water and sodium hydroxide is added into the electrolytic cell, the stirring assembly can fully mix the water and sodium hydroxide, enhance the conductivity of the water, significantly accelerate the reaction rate of electrolytic water, and improve the generation speed of hydrogen.

[0024] (2) The electrode rod of the laboratory electrolytic hydrogen production device is connected with the positive and negative electrode joints through the buckle assembly. When in use, the experimental personnel can directly insert the insertion rod of the electrode rod into the matching groove of the buckle assembly, and after the insertion rod is in contact with the joint of the positive and negative electrodes, the electrode rod can be rotated, the clamping groove on the insertion rod can be clamped to the clamping block, and at this time the electrode rod is fixed. When disassembled, only need to rotate the electrode rod, the clamping block of the buckle assembly is separated from the clamping groove of the insertion rod, and the electrode rod can be pulled out. Replacing the electrode rod is simple, convenient, fast and labor-saving, and is conducive to improving the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a whole schematic view of the laboratory electrolytic hydrogen production device;

[0026] Figure 2 It is a schematic view of the internal structure of the laboratory electrolytic hydrogen production device;

[0027] Figure 3 It is a schematic view of the stirring assembly;

[0028] Figure 4 It is a schematic view of the matching structure of the buckle assembly;

[0029] Figure 5 It is a schematic view of the insertion rod structure;

[0030] Figure 6 It is a schematic view of the card block structure;

[0031] The figure mark: 1, the shell;2, electrolytic cell;3, check valve assembly;301, water tank;302, water outlet pipe;4, partition;5, oxygen production area;6, mixing area;7, hydrogen production area;8, oxygen pipe;9, hydrogen pipe;10, stirring assembly;101, motor;102, stirring shaft;103, stirring blade;11, positive electrode connector;12, negative electrode connector;13, buckle assembly;131, matching groove;132, spring groove, 133, spring;134, card block;14, electrode rod;141, plug rod;142, card slot. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purpose, characteristics and advantages of the utility model more obvious and easy to understand, the specific embodiment of the utility model is described in detail below with reference to the drawings of the specification.

[0033] Example 1

[0034] As Figures 1-6 shown, the embodiment provides a laboratory electrolytic hydrogen production device.

[0035] As Figure 1 and Figure 2 shown, the laboratory electrolytic hydrogen production device comprises a shell 1, an electrolytic cell 2, a check valve assembly 3 and a partition 4, the inside of the shell 1 is fixed with the electrolytic cell 2 through a support frame, the stability of the electrolytic cell 2 in the shell 1 is ensured, and the left and right ends of the electrolytic cell 2 are both provided with the check valve assembly 3 fixed in the inner wall of the shell 1, the check valve assembly 3 is provided with a water tank, the hydrogen or oxygen generated by the electrolytic cell 2 first enters the inside of the water tank, and then is discharged again, the check valve assembly 3 can prevent the generated gas from flowing in reverse, thereby ensuring stability.

[0036] The electrolytic cell 2 is provided with two partitions 4, and a gap is arranged between the lower end of the partition 4 and the lower end of the electrolytic cell 2, the two partitions 4 sequentially divide the electrolytic cell 2 into an oxygen production area 5, a mixing area 6 and a hydrogen production area 7, the partition 4 is fixedly connected with the electrolytic cell 2, and water and catalyst can enter the inside of the oxygen production area 5 and the hydrogen production area 7 from the mixing area 6.

[0037] The oxygen production area 5 is connected with the check valve assembly 3 through an oxygen pipe 8 arranged above the oxygen production area 5, the mixing area 6 is provided with a stirring assembly 10 for mixing water and catalyst, the stirring assembly can fully mix water and sodium hydroxide, thereby enhancing the conductivity of water, significantly accelerating the reaction rate of electrolytic water, and improving the generation speed of hydrogen.

[0038] The hydrogen production area 7 is connected with the check valve assembly 3 through the hydrogen pipe 9, and the oxygen produced by the oxygen production area 5 enters the check valve assembly 3 through the oxygen pipe 8 and is then discharged, and the hydrogen produced by the hydrogen production area 7 enters the check valve assembly 3 through the hydrogen pipe 9 and is then discharged.

[0039] The electrode rods 14 are arranged in the oxygen production area 5 and the hydrogen production area 7, and the positive electrode connecting head 11 and the negative electrode connecting head 12 are arranged at the lower ends of the oxygen production area 5 and the hydrogen production area 7, respectively, and the positive electrode connecting head 11 and the negative electrode connecting head 12 are connected with the electrode rods 14 through the buckle assembly 13, and the positive electrode connecting head 11 and the negative electrode connecting head 12 are connected with the external power supply through the wires, and after the power supply is turned on, the positive electrode connecting head 11 is connected with the electrode rod 14 to electrolyze water to produce oxygen, and the negative electrode connecting head 12 is connected with the electrode rod 14 to electrolyze water to produce hydrogen, and the buckle assembly 13 can realize quick disassembly and installation of the electrode rod 14 and the positive electrode connecting head 11 and the negative electrode connecting head 12, which is simple and convenient to operate, saves time and effort, and is beneficial to improve work efficiency.

[0040] The shell 1 and the electrolytic cell 2 are both made of transparent material, so that the physical phenomena in the electrolytic cell 2 can be clearly observed by the experimenters, which is convenient for the experimenters to observe and record, and the upper ends of the shell 1 and the electrolytic cell 2 are both provided with detachable upper covers, which can ensure no gas leakage when the upper covers of the shell 1 and the electrolytic cell 2 are closed, and the upper covers can be detached when water needs to be added or maintenance is needed, which is convenient for operation.

[0041] As shown in Figure 1 and Figure 2 , the check valve assembly 3 includes a water tank 301 and a gas outlet pipe 302, the water tank 301 is fixedly connected with the side wall of the shell 1, the oxygen pipe 8 and the hydrogen pipe 9 are connected with two water tanks 301, respectively, and the oxygen or hydrogen transported by the oxygen pipe 8 and the hydrogen pipe 9 first enters the inside of the water tank 301, the upper end of the water tank 301 is provided with the gas outlet pipe 302, the outlet of the gas outlet pipe 302 penetrates through the side wall of the shell 1 and extends to the outside of the shell 1, and the oxygen and hydrogen entering the water tank 301 are finally discharged through the gas outlet pipe 302, which can be collected and used by the experimenters, and the check valve assembly 3 can prevent the generated gas from flowing in the reverse direction, thereby ensuring stability and safety.

[0042] As shown in Figure 2 and Figure 3As shown, the stirring assembly 10 includes a motor 101, a stirring shaft 102 and stirring blades 103, the motor 101 is located at the lower end of the electrolytic cell 2 and fixedly connected with the electrolytic cell 2, the stirring shaft 102 is uniformly provided with stirring blades 103, and the stirring shaft 102 and the stirring blades 103 are located in the mixing area 6, the lower end of the stirring shaft 102 is connected with the output end of the motor 101, after adding appropriate amount of water and sodium hydroxide into the electrolytic cell 2, the stirring assembly 10 will mix the water and sodium hydroxide fully, enhance the conductivity of water, significantly accelerate the reaction rate of electrolytic water, improve the generation speed of hydrogen, the connecting part of the stirring shaft 102 and the electrolytic cell 2 is provided with a bearing and a sealing ring to prevent water leakage.

[0043] As shown in Figure 2 and Figure 4 , the positive electrode connector 11 and the negative electrode connector 12 are fixedly connected with the bottom end of the electrolytic cell 2, ensuring the connection stability of the positive electrode connector 11 and the negative electrode connector 12, and the upper end of the positive electrode connector 11 and the negative electrode connector 12 is connected with the buckle assembly 13, the metal end of the positive electrode connector 11 and the negative electrode connector 12 is inlaid in the buckle assembly 13, ensuring that it can be connected with the lower end of the electrode rod 14 for power supply.

[0044] As shown in Figure 2 , Figure 4 and Figure 5 , the lower end of the electrode rod 14 is provided with a plug rod 141, the plug rod 141 is connected with the positive electrode connector 11 and the negative electrode connector 12 through the buckle assembly 13, when the electrode rod 14 is inserted into the buckle assembly 13, the plug rod 141 is in contact with the positive electrode connector 11 or the negative electrode connector 12, the sidewall of the plug rod 141 is provided with a clamping groove 142, which facilitates the fixation of the electrode rod 14 in the buckle assembly 13.

[0045] As shown in Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, the buckle assembly 13 includes a matching groove 131, a spring groove 132, a spring 133 and a clamping block 134. The matching groove 131 is a through groove, facilitating the connection of the positive and negative connectors. The upper end of the matching groove 131 is inlaid with the upper connector of the positive connector 11 and the negative connector 12. The upper end of the matching groove 131 is used for inlaying the insertion rod 141. The lateral wall of the matching groove 131 is provided with a transverse spring groove 132. The spring groove 132 is internally provided with the spring 133 and the clamping block 134. One end of the spring 133 is fixedly connected with the bottom end of the spring groove 132. The other end of the spring 133 is connected with the bottom end of the clamping block 134. When the insertion rod 141 is connected with the positive connector 11 or the negative connector 12, the position of the clamping groove 142 corresponds to the position of the clamping block 134. When installing, the insertion rod 141 of the electrode stick 14 is inserted into the matching groove 131 of the buckle assembly 13. After contacting with the connectors of the positive and negative electrodes, the electrode stick 14 can be rotated, so that the clamping groove 142 on the insertion rod 141 is rotated to the position of the spring groove 132. The spring 133 acts on the clamping block 134, so that the clamping block 134 is inserted into the clamping groove 142. At this time, the electrode stick 14 is fixed. When disassembling, the clamping block 134 of the buckle assembly 13 is separated from the clamping groove 142 of the insertion rod 141, and the electrode stick 14 can be pulled out. The installation and replacement of the electrode stick 14 are simple and convenient, saving time and effort, and being beneficial to improving work efficiency.

[0046] As shown in Figure 4 , Figure 5 and Figure 6 , the left and right sides of the opening of the clamping groove 142 are inclined surfaces, and the upper and lower sides of the opening are vertical surfaces. The left and right sides of the front end of the clamping block 134 are inclined surfaces, and the upper and lower sides of the front end are vertical surfaces. When the clamping block 134 is inserted into the clamping groove 142, it will not shake up and down, ensuring that the clamping block 134 will not slide up and down to separate from the clamping groove 142, and ensuring the stability of the electrode stick 14.

[0047] When in use, the electrode stick 14 is installed first. The insertion rod 141 of the electrode stick 14 is inserted into the matching groove 131 of the buckle assembly 13. After contacting with the connectors of the positive and negative electrodes, the electrode stick 14 can be rotated, so that the clamping groove 142 on the insertion rod 141 is rotated to the position of the spring groove 132. The spring 133 acts on the clamping block 134, so that the clamping block 134 is inserted into the clamping groove 142. At this time, the electrode stick 14 is fixed. Then, after adding an appropriate amount of water and sodium hydroxide into the electrolytic cell 2, the stirring assembly 10 will fully mix the water and sodium hydroxide, enhance the conductivity of the water, significantly accelerate the reaction rate of electrolytic water, and improve the generation speed of hydrogen. The buckle assembly 13 can realize the quick disassembly and installation of the electrode stick 14 and the positive connector 11 and the negative connector 12, which is simple and convenient to operate, saves time and effort, and is beneficial to improving work efficiency.

[0048] The above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A laboratory electrolytic hydrogen production apparatus, characterized in that: It includes a shell (1), an electrolytic cell (2), a check valve assembly (3) and a partition (4). The electrolytic cell (2) is fixed inside the shell (1) by a support frame, and the left and right ends of the electrolytic cell (2) are provided with check valve assemblies (3) fixed to the inner wall of the shell (1). The electrolytic cell (2) is provided with two partitions (4), and there is a gap between the lower end of the partition (4) and the lower end of the electrolytic cell (2); Two partitions divide the electrolytic cell (2) into an oxygen production zone (5), a mixing zone (6), and a hydrogen production zone (7) in sequence. The oxygen production zone (5) is connected to the check assembly via an oxygen pipe (8), the mixing zone (6) is equipped with a stirring assembly (10), and the hydrogen production zone (7) is connected to the check assembly via a hydrogen pipe (9). Electrode rods (14) are provided inside both the oxygen production zone (5) and the hydrogen production zone (7). The lower interior of the oxygen production zone (5) and the hydrogen production zone (7) are respectively provided with a positive electrode connector (11) and a negative electrode connector (12), and both the positive electrode connector (11) and the negative electrode connector (12) are connected to the electrode rod (14) through a snap-fit ​​assembly (13).

2. The laboratory electrolytic hydrogen production apparatus according to claim 1, characterized in that: Both the outer shell (1) and the electrolytic cell (2) are provided with a detachable top cover.

3. The laboratory electrolytic hydrogen production apparatus according to claim 1, characterized in that: The check valve assembly (3) includes a water tank (301) and an outlet pipe (302). The oxygen pipe (8) and the hydrogen pipe (9) are respectively connected to the two water tanks. The upper end of the water tank (301) is provided with an outlet pipe (302). The outlet of the outlet pipe (302) passes through the side wall of the outer shell (1) and extends to the outside of the outer shell (1).

4. The laboratory electrolytic hydrogen production apparatus according to claim 1, characterized in that: The stirring assembly (10) includes a motor (101), a stirring shaft (102), and stirring blades (103). The motor (101) is located at the lower end of the electrolytic cell (2) and is fixedly connected to the electrolytic cell (2). The stirring shaft (102) is uniformly provided with stirring blades (103), and the stirring shaft (102) and stirring blades (103) are located in the mixing zone (6). The lower end of the stirring shaft (102) is connected to the output end of the motor (101).

5. The laboratory electrolytic hydrogen production apparatus according to claim 1, characterized in that: The positive electrode connector (11) and the negative electrode connector (12) are fixedly connected to the bottom end of the electrolytic cell (2), and the upper ends of the positive electrode connector (11) and the negative electrode connector (12) are connected to the snap-fit ​​assembly (13).

6. The laboratory electrolytic hydrogen production apparatus according to claim 1, characterized in that: The lower end of the electrode rod (14) is provided with a plug (141), which is connected to the positive electrode connector (11) and the negative electrode connector (12) through a snap fastener assembly (13). The side wall of the plug (141) is provided with a slot (142).

7. The laboratory electrolytic hydrogen production apparatus according to claim 5, characterized in that: The buckle assembly (13) includes a mating groove (131), a spring groove (132), a spring (133), and a locking block (134). The mating groove (131) is a through groove. The upper connectors of the positive terminal connector (11) and the negative terminal connector (12) are embedded in the lower end of the mating groove (131). The upper end of the mating groove (131) is used to embed the insert rod (141). The side wall of the mating groove (131) is provided with a spring groove (132). The spring groove (132) is arranged horizontally, and the spring groove (132) is provided with a spring (133) and a locking block (134).

8. The laboratory electrolytic hydrogen production apparatus according to claim 7, characterized in that: One end of the spring (133) is fixedly connected to the bottom end of the spring groove (132), and the other end of the spring (133) is connected to the bottom end of the locking block (134).

9. The laboratory electrolytic hydrogen production apparatus according to claim 6, characterized in that: The left and right sides of the opening of the slot (142) are inclined surfaces, and the top and bottom sides of the opening are vertical surfaces. The left and right sides of the front end of the card block (134) are inclined surfaces, and the top and bottom sides of the front end are vertical surfaces.

10. The laboratory electrolytic hydrogen production apparatus according to claim 6, characterized in that: When the insertion rod (141) is connected to the positive terminal connector (11) or the negative terminal connector (12), the position of the slot (142) corresponds to the position of the block (134).

Images