Uniform mixing and stirring device for electrochemical detection

Abstract

The utility model belongs to the technical field of electrochemical detection, and discloses a uniform mixing and stirring device for electrochemical detection. The device comprises a shell, a stirring module, an electrode detection module and a lifting motor, the stirring module is mounted on the shell and comprises a rotatable cup holder, the cup holder is used for bearing a stirring cup, a heating film is arranged on the outer wall of the cup holder and used for heating the stirring cup, and the electrode detection module can extend into the stirring cup for detection. The lifting motor is fixedly installed in the shell and used for adjusting the distance between the electrode detection module and the cup holder. According to the uniform mixing and stirring device for electrochemical detection, the heating film is arranged on the outer wall of the cup holder, so that the stirring cup can be directly heated while the stirring step is carried out, a solution to be detected in the stirring cup quickly meets the detection condition, the detection efficiency is improved, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemical detection, in particular to an electrochemical detection mixing and stirring device. Background Art

[0002] Electrochemical detection mixing and stirring devices usually include electrochemical sensors, stirrers, control systems, and necessary auxiliary components (such as sample cells, electrode holders, etc.). These devices detect the target substance in the solution to be tested through electrochemical sensors, and use stirrers to ensure that the solution to be tested is evenly mixed during the detection process, thereby improving the accuracy of the detection.

[0003] The core function of the electrochemical detection mixing and stirring device is to perform electrochemical detection. The electrochemical sensor indirectly reflects the concentration or existence state of the target substance by measuring electrochemical parameters such as current and voltage in the solution to be tested. The agitator fully mixes the components in the solution to be tested by means of rotation or vibration, eliminates the concentration gradient, and ensures that the electrochemical sensor contacts a uniform solution during the detection process. However, in the existing electrochemical detection mixing and stirring devices, it is impossible to efficiently heat while centrifugally stirring, resulting in low detection efficiency and inaccurate test results.

[0004] Based on the above, there is an urgent need for an electrochemical detection mixing and stirring device to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide an electrochemical detection mixing and stirring device, which can efficiently heat during centrifugal stirring, thereby improving the detection efficiency and the accuracy of the detection result.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The electrochemical detection mixing and stirring device comprises:

[0008] case;

[0009] A stirring module, the stirring module is installed on the housing, the stirring module includes a rotatable cup holder, the cup holder is used to carry the stirring cup, and the outer wall of the cup holder is provided with a heating film, the heating film is used to heat the stirring cup;

[0010] An electrode detection module, wherein the electrode detection module can be inserted into the stirring cup for detection;

[0011] A lifting motor is fixedly installed in the housing and is used to adjust the distance between the electrode detection module and the cup holder.

[0012] Preferably, the stirring module also includes a reduction motor, which is fixedly disposed in the shell, the bottom end of the cup holder is connected to the reduction motor, the top end of the cup holder can be inserted and fixed with the stirring cup, and the reduction motor is used to drive the cup holder to rotate around a vertical axis.

[0013] Preferably, the stirring module also includes a through-hole conductive slip ring, which includes a stator end and a rotor end, the stator end is fixedly connected to the shell, the rotor end is rotatably penetrated through the stator end, and the stator end and the rotor end are electrically connected, the rotor end is electrically connected to the heating film, and the stator end is electrically connected to a power supply.

[0014] Preferably, the stirring module further comprises heat-insulating cotton, and the heating film is arranged between the heat-insulating cotton and the cup holder.

[0015] Preferably, the stirring module further comprises an insulating belt, and the thermal insulation cotton is arranged between the insulating belt and the heating film.

[0016] Preferably, the electrode detection module comprises a telescopic tube assembly, the distance between the top and bottom ends of the telescopic tube assembly is adjustable, and the lifting motor is used to adjust the distance between the top and bottom ends of the telescopic tube assembly.

[0017] Preferably, the electrode detection module further comprises an electrode slot fixing seat, an electrode PCB board (64) and an electrode, wherein the electrode is installed in a slot of the electrode PCB board, the electrode slot fixing seat is used to fix the electrode PCB board, and the electrode slot fixing seat is rotatably connected to the top end of the telescopic tube assembly so as to extend the electrode into and out of the stirring cup so as to transmit power and signals when the cup holder rotates.

[0018] Preferably, the electrode detection module also includes a rotating shaft and a butterfly spring, the rotating shaft rotatably passes through the top end of the telescopic tube assembly and is fixedly passed through the electrode slot fixing seat, the butterfly spring is fixedly sleeved on the rotating shaft and can abut against the electrode slot fixing seat to provide rotational damping, and the rotational damping is used to make the electrode slot fixing seat pause at any position within the rotation range.

[0019] Preferably, the rotation range includes at least 0°-50°.

[0020] Preferably, the shell is provided with a positioning column, and the electrode slot fixing seat is provided with a positioning hole. When the electrode slot fixing seat is rotated to 0°, the lifting motor can move the electrode slot fixing seat so that the positioning column is limitedly inserted into the positioning hole.

[0021] The beneficial effects of the utility model are as follows: in the electrochemical detection mixing and stirring device, a heating film is arranged on the outer wall of the cup holder, so that the stirring cup can be directly heated while the stirring step is being performed, so that the solution to be tested in the stirring cup quickly reaches the detection conditions, which not only improves the detection efficiency, but also helps to improve the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an internal schematic diagram of the electrochemical detection mixing and stirring device provided by the utility model;

[0023] Figure 2 It is a structural schematic diagram of a stirring module in an electrochemical detection mixing and stirring device;

[0024] Figure 3 It is an assembly drawing of an electrode slot fixing seat and a telescopic tube assembly in an electrochemical detection mixing and stirring device;

[0025] Figure 4 It is a schematic diagram of the rotation range and lifting range of the electrochemical detection mixing and stirring device;

[0026] Figure 5 It is a schematic diagram of the internal structure of the electrochemical detection mixing and stirring device when it is opened to the maximum angle and raised to the highest position.

[0027] In the figure:

[0028] 1. Base plate; 2. Shell; 21. Positioning column; 3. Stirring module; 31. Reducer motor; 32. Through-hole conductive slip ring; 33. Heating film; 34. Insulation cotton; 35. Insulating tape; 36. Bearing; 37. Cup holder; 4. Stirring cup; 5. Electrode slot fixing shell; 6. Electrode detection module; 61. Locking nut; 62. Gasket; 63. Butterfly spring; 64. Electrode PCB board; 65. Rotating shaft; 66. Electrode slot fixing seat; 661. Positioning hole; 67. Electrode; 68. Telescopic tube assembly; 7. Lifting motor; 8. Plug connector. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0033] The following is based on the attached Figure 1 To Attachment Figure 5 The utility model introduces an electrochemical detection mixing and stirring device.

[0034] like Figure 1 As shown, in this embodiment, the electrochemical detection mixing and stirring device mainly includes a bottom plate 1, a shell 2, a stirring module 3, an electrode slot fixing shell 5, an electrode detection module 6, a lifting motor 7 and a plug connector 8. Among them, the bottom plate 1 and the shell 2 are fixedly connected to form a receiving cavity, and a part of the stirring module 3, a part of the electrode detection module 6, a lifting motor 7 and a plug connector 8 are all fixedly arranged in the receiving cavity, and the bottom plate 1 and the shell 2 can fix and support the stirring module 3, the electrode slot fixing shell 5, the electrode detection module 6, the lifting motor 7 and the plug connector 8.

[0035] The stirring module 3 includes a rotatable cup holder 37, which is used to carry the stirring cup 4 and stir the solution to be tested in the stirring cup 4. The outer wall of the cup holder 37 is provided with a heating film 33, which is used to heat the stirring cup 4, so that the stirring cup 4 is directly heated while stirring. The electrode detection module 6 includes an electrode PCB board 64 and an electrode 67, and the lifting motor 7 is transmission-connected to the motor detection module, and the electrode 67 is electrically connected to the electrode PCB board 64. The lifting motor 7 is used to adjust the distance between the electrode detection module 6 and the cup holder 37, so that the electrode 67 can be extended into and out of the stirring cup 4 to realize the detection of the solution to be tested. The plug connector 8 can be connected to a power supply and transmit electrical energy to the stirring module 3, the electrode detection module 6 and the lifting motor 7, so as to realize electrochemical detection.

[0036] Specifically, when using the electrochemical detection mixing and stirring device, first place the stirring cup 4 into the cup holder 37, and rotate the cup holder 37 to stir the solution to be tested in the stirring cup 4. At the same time, the solution to be tested in the stirring cup 4 can be heated by the heating film 33 arranged on the outer wall of the cup holder 37. Subsequently, the distance between the electrode detection module 6 and the cup holder 37 can be reduced by the lifting motor 7 until the electrode 67 extends into the stirring cup 4 and contacts the solution to be tested, thereby detecting the solution to be tested. After the detection is completed, the distance between the electrode detection module 6 and the cup holder 37 is increased by the lifting motor 7 until the electrode 67 is moved out of the stirring cup 4, and then the stirring cup 4 can be taken out of the cup holder 37 to complete the detection process.

[0037] In the electrochemical detection mixing and stirring device, a heating film 33 is provided on the outer wall of the cup holder 37, so that the stirring cup 4 can be directly heated while the stirring step is being performed, so that the solution to be tested in the stirring cup 4 quickly reaches the detection conditions, which not only improves the detection efficiency, but also helps to improve the accuracy of the detection results.

[0038] like Figure 2 As shown, in this embodiment, the stirring module 3 also includes a reduction motor 31, which is fixedly arranged in the housing 2, and the bottom end of the cup holder 37 is connected to the reduction motor 31. The top of the cup holder 37 can be inserted with a fixed stirring cup 4, and the reduction motor 31 is used to drive the cup holder 37 to rotate around the vertical axis. The reduction motor 31 includes a reducer and a motor, and the speed and torque applied by the motor to the cup holder 37 can be changed by adjusting the ratio of the reducer to meet different stirring requirements and improve detection efficiency and detection quality.

[0039] Continue to refer to Figure 2As shown, a transmission shaft and a bearing 36 are connected between the reduction motor 31 and the cup holder 37, and the reduction motor 31 can drive the cup holder 37 to rotate through the transmission shaft and the bearing 36. The stirring module 3 also includes a through-hole conductive slip ring 32, and the through-hole conductive slip ring 32 and the bearing 36 are both sleeved on the transmission shaft and fixedly connected to the housing 2. At the same time, the through-hole conductive slip ring 32 can connect the heating film 33 and the plug connector 8, thereby supplying power to the heating film 33. Preferably, the heating film 33 uses a PI heating film (polyimide heating film). The PI heating film can work stably for a long time at high temperature, and its decomposition temperature can reach 600°C. It can be used for a long time in the high temperature range of 260-280°C, and can be used for a short time in the high temperature range of 400°C. It is safe and reliable. At the same time, the PI heating film is soft and thin, and its minimum bending radius is only about 0.8mm, which is convenient for installation. In addition, the PI heating film adopts a planar heating method, with a large surface power density, uniform heating and fast heating rate, which improves the heating efficiency.

[0040] Specifically, the through-hole conductive slip ring 32 includes a stator end and a rotor end, the stator end is fixedly connected to the housing 2, the rotor end is rotatably inserted into the stator end, the rotor end is fixedly sleeved on the transmission shaft, and the rotor end can rotate with the transmission shaft. The stator end and the rotor end are electrically connected, the rotor end is electrically connected to the heating film 33 (it can also be connected to a temperature sensor, etc.), and the stator end is electrically connected to the plug connector 8 and the power supply (it can also be connected to a control board, etc.). The through-hole conductive slip ring 32 can transmit electrical signals and power between the rotating part and the fixed part, so as to transmit power and signals when the cup holder rotates, and can maintain low torque and loss during the transmission process, which helps to extend the service life of the equipment.

[0041] Preferably, if Figure 2 As shown, the stirring module 3 also includes heat preservation cotton 34, and the heating film 33 is arranged between the heat preservation cotton 34 and the cup holder 37, which can reduce the heat dissipation and improve the heating efficiency. Further preferably, the stirring module 3 also includes an insulating tape 35, and the heat preservation cotton 34 is arranged between the insulating tape 35 and the cup holder 37, which can further prevent the short circuit phenomenon.

[0042] like Figure 1 , Figure 3 As shown, in this embodiment, the electrode detection module 6 includes a telescopic tube assembly 68, the distance between the top and bottom ends of the telescopic tube assembly 68 is adjustable, and the lifting motor 7 is used to adjust the distance between the top and bottom ends of the telescopic tube assembly 68.

[0043] Specifically, the telescopic tube assembly 68 includes a first tube and a second tube, the first tube is slidably inserted into the second tube, and the second tube is fixedly arranged. The output end of the lifting motor 7 is transmission-connected with the first tube, and can drive the first tube to slide in the second tube along the vertical direction. The top end of the first tube extends out of the second tube, and is installed with an electrode slot fixing seat 66, and the above-mentioned electrode PCB board 64 is installed on the electrode slot fixing seat 66. When the first tube slides in the vertical direction, the distance between the electrode slot fixing seat 66 and the cup holder 37 will also change accordingly, so that the electrode 67 is extended into or moved out of the stirring cup 4, realizing automatic positioning, mixing and stirring detection, overcoming the defect of the prior art that the position of the electrode 67 needs to be manually adjusted up and down, and solving the interference of human factors on the detection results.

[0044] like Figures 3 to 5 As shown, in this embodiment, the electrode slot fixing seat 66 is rotatably connected to the first tube to facilitate loading the stirring cup 4 into the cup holder 37. Specifically, the electrode detection module 6 also includes a rotating shaft 65 and a locking nut 61. The rotating shaft 65 is inserted through the top of the first tube and the electrode slot fixing seat 66. The locking nut 61 is connected to the rotating shaft 65 to prevent the rotating shaft 65 from being separated from the electrode slot fixing seat 66. The electrode slot fixing seat 66 can be rotatably connected to the first tube through the rotating shaft 65, and when the stirring cup 4 needs to be put in and taken out, it is only necessary to rotate the electrode slot fixing seat 66 in a direction away from the cup holder 37, which can greatly facilitate the operation of putting in and taking out the stirring cup 4.

[0045] Preferably, the electrode detection module 6 also includes a butterfly spring 63, which is fixedly sleeved on the rotating shaft 65 and can abut against the electrode slot fixing seat 66 to provide rotation damping, and the rotation damping is used to make the electrode slot fixing seat 66 pause at any position within the rotation range. Further, a plurality of butterfly springs 63 and gaskets 62 are sleeved on the rotating shaft 65. By reasonably setting the number of butterfly springs 63 and gaskets 62, the size of the rotation damping can be adjusted, so that the electrode slot fixing seat 66 can pause at any position, feel self-locking, and flip stably and smoothly for more than 10,000 times.

[0046] Specifically, Figure 4 As shown, in this embodiment, the rotation range of the electrode slot fixing seat 66 includes 0°-50°, so that the electrode slot fixing seat 66 can rotate from the horizontal direction to the direction away from the cup holder 37. Of course, in some other embodiments, the rotation range can also be larger, and this is not specifically limited in the present invention.

[0047] Furthermore, if Figure 5As shown, the housing 2 is provided with a positioning column 21, and the electrode slot fixing seat 66 is provided with a positioning hole 661. When the electrode slot fixing seat 66 is rotated to 0°, the lifting motor 7 can move the electrode slot fixing seat 66 so that the positioning column 21 is limitedly inserted into the positioning hole 661. Through the positioning column 21 and the positioning hole 661, the housing 2 and the electrode slot fixing seat 66 can be relatively positioned in the front and back and left and right, and cooperate with the lifting motor 7 so that the position of the electrode 67 remains unchanged during the detection process, thereby improving the stability and consistency of the detection.

[0048] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. An electrochemical detection mixing and stirring device, characterized in that: include: Housing (2); A stirring module (3), the stirring module (3) being mounted on the housing (2), the stirring module (3) comprising a rotatable cup holder (37), the cup holder (37) being used to carry the stirring cup (4), and the outer wall of the cup holder (37) being provided with a heating film (33), the heating film (33) being used to heat the stirring cup (4); An electrode detection module (6), wherein the electrode detection module (6) can be inserted into the stirring cup (4) for detection; A lifting motor (7), wherein the lifting motor (7) is fixedly installed in the housing (2), and the lifting motor (7) is used to adjust the distance between the electrode detection module (6) and the cup holder (37).

2. The electrochemical detection mixing and stirring device according to claim 1, characterized in that: The stirring module (3) further comprises a reduction motor (31), the reduction motor (31) being fixedly arranged in the housing (2), the bottom end of the cup holder (37) being connected to the reduction motor (31), the top end of the cup holder (37) being capable of inserting and fixing the stirring cup (4), and the reduction motor (31) being used for driving the cup holder (37) to rotate around a vertical axis.

3. The electrochemical detection mixing and stirring device according to claim 1, characterized in that: The stirring module (3) further comprises a through-hole conductive slip ring (32), wherein the through-hole conductive slip ring (32) comprises a stator end and a rotor end, wherein the stator end is fixedly connected to the housing (2), and the rotor end is rotatably arranged through the stator end, and the stator end and the rotor end are electrically connected, and the rotor end is electrically connected to the heating film (33), and the stator end is electrically connected to a power source so as to transmit power and signals when the cup holder (37) rotates.

4. The electrochemical detection mixing and stirring device according to claim 1, characterized in that: The stirring module (3) further comprises heat-insulating cotton (34), and the heating film (33) is arranged between the heat-insulating cotton (34) and the cup holder (37).

5. The electrochemical detection mixing and stirring device according to claim 4, characterized in that: The stirring module (3) further comprises an insulating belt (35), and the heat-insulating cotton (34) is arranged between the insulating belt (35) and the heating film (33).

6. The electrochemical detection mixing and stirring device according to claim 1, characterized in that: The electrode detection module (6) comprises a telescopic tube assembly (68), the distance between the top and bottom ends of the telescopic tube assembly (68) being adjustable, and the lifting motor (7) being used to adjust the distance between the top and bottom ends of the telescopic tube assembly (68).

7. The electrochemical detection mixing and stirring device according to claim 6, characterized in that: The electrode detection module (6) further comprises an electrode slot fixing seat (66), an electrode PCB board (64) and an electrode (67); the electrode (67) is installed in a slot of the electrode PCB board (64); the electrode slot fixing seat (66) is used to fix the electrode PCB board (64); the electrode slot fixing seat (66) is rotatably connected to the top end of the telescopic tube assembly (68) so as to extend the electrode (67) into and out of the stirring cup (4).

8. The electrochemical detection mixing and stirring device according to claim 7, characterized in that: The electrode detection module (6) further comprises a rotating shaft (65) and a butterfly spring (63); the rotating shaft (65) is rotatably inserted through the top end of the telescopic tube assembly (68) and fixedly inserted through the electrode slot fixing seat (66); the butterfly spring (63) is fixedly sleeved on the rotating shaft (65) and can abut against the electrode slot fixing seat (66) to provide rotational damping, and the rotational damping is used to make the electrode slot fixing seat (66) pause at any position within the rotational range.

9. The electrochemical detection mixing and stirring device according to claim 8, characterized in that: The rotation range at least includes 0°-50°.

10. The electrochemical detection mixing and stirring device according to claim 9, characterized in that: The shell (2) is provided with a positioning column (21), and the electrode slot fixing seat (66) is provided with a positioning hole (661). When the electrode slot fixing seat (66) is rotated to 0°, the lifting motor (7) can move the electrode slot fixing seat (66) so that the positioning column (21) is limitedly inserted into the positioning hole (661).

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