Drinking water heavy metal detection device

Abstract

The utility model provides a drinking water heavy metal detection device and belongs to the technical field of drinking water detection. Comprising a base, a supporting plate is elastically installed on the upper end face of the base, a sample container is placed on the supporting plate, a heavy metal detector is erected above the base, a vertical fixing cylinder is installed on the lower end face of the heavy metal detector, a horizontal detection plate is fixed to the lower end of the fixing cylinder, and three T-shaped clamping grooves are formed in the lower end face of the detection plate; and conducting strips electrically connected with the heavy metal detector are arranged in the three T-shaped clamping grooves. According to the utility model, not only can the sample container filled with drinking water to be detected be automatically driven by the elastically mounted support plate to be matched with the fixed cylinder and the detection plate to carry out heavy metal detection, but also the working electrode plate, the reference electrode plate and the auxiliary electrode plate for heavy metal detection on the detection plate are convenient and quick to disassemble and assemble, so that the later loss replacement is facilitated; and the overall use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of drinking water detection, in particular to a drinking water heavy metal detection device. Background Art

[0002] Drinking water is essential in people's lives, so its quality is directly related to people's health and safety. By regularly testing terminal drinking water, harmful substances, microorganisms and chemicals in the water can be detected and controlled in a timely manner, ensuring that the water quality meets hygiene standards and protecting people from the hazards of water pollution.

[0003] At present, the existing drinking water heavy metal detection device, such as a drinking water heavy metal detection device disclosed in Chinese patent announcement number CN210775456U, includes a base and a heavy metal detection probe, the base is provided with a fixing frame, the fixing frame is provided with a detection barrel, the detection barrel is provided with a water outlet, the water outlet is provided with a solenoid valve, the base is provided with a supporting cylinder, the supporting cylinder is provided with a slider, the slider is provided with a left connecting column, the left connecting column is provided with a low-speed motor, the low-speed motor is provided with a connecting rod, the connecting rod is provided with a U-shaped tube, the U-shaped tube is provided with a brush, the slider is provided with a right connecting column, the right connecting column is provided with a vertical rod, the heavy metal detection probe is fixedly connected to the lower end of the vertical rod, the vertical rod is provided with a barrel cover, the supporting cylinder is provided with a lock hole, the left connecting column is provided with an assembly groove, the assembly groove is provided with a bar groove, the assembly groove is provided with a return spring, the assembly groove is provided with a latch, and the latch is provided with a lever.

[0004] In actual use, this type of prior art has heavy metal detection probes that are mostly of an integrated structure, which makes it inconvenient to disassemble and assemble. This makes it inconvenient to replace worn working electrodes when using the electrochemical detection principle to detect heavy metals in drinking water.

[0005] Therefore, the present application provides a drinking water heavy metal detection device to solve the above technical problems. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a drinking water heavy metal detection device to solve the problem in the prior art that the heavy metal detection probe is inconvenient to disassemble and assemble, resulting in inconvenience in replacing the worn working electrode when heavy metal detection of drinking water is performed using the electrochemical detection principle.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A drinking water heavy metal detection device includes a base, the upper end surface of the base is elastically mounted with a support plate, a sample container is placed on the support plate, and a heavy metal detector is mounted above the base, the lower end surface of the heavy metal detector is mounted with a vertical fixed cylinder, the lower end of the fixed cylinder is fixed with a horizontal detection plate, the lower end surface of the detection plate is provided with three T-shaped slots, the three T-shaped slots are each provided with a conductive sheet electrically connected to the heavy metal detector, and the three T-shaped slots are sequentially clamped and mounted with a vertical working electrode sheet, a reference electrode sheet and an auxiliary electrode sheet.

[0009] Optionally, a limiting sliding groove is provided on the upper end surface of the support plate, and the bottom of the sample container is slidably placed in the limiting sliding groove.

[0010] Optionally, a plurality of vertical support rods are fixed to the lower end surface of the support plate, and the lower ends of the support rods are vertically inserted into corresponding movable cavities opened in the base.

[0011] Optionally, a horizontal movable plate is fixed to the lower ends of the plurality of support rods, the movable plate is placed horizontally in the movable cavity, and a spring is fixed to the lower end surface of the movable plate, the lower end of the spring is installed on the bottom surface of the movable cavity.

[0012] Optionally, a transparent cover is further installed on the fixed cylinder, and the transparent cover completely covers the working electrode sheet, the reference electrode sheet and the auxiliary electrode sheet, and the outer diameter of the upper port of the sample container is adapted to the inner diameter of the lower port of the transparent cover.

[0013] Optionally, a vertical partition is fixed in the middle of the sample container, dividing the interior of the sample container into two independent chambers, and a salt bridge is set up on the partition.

[0014] Optionally, the working electrode sheet and the auxiliary electrode sheet extend into two independent chambers in the sample container respectively, and the reference electrode sheet abuts against the salt bridge.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] In the above scheme, thanks to the cooperation of the base, support plate, fixed cylinder and detection plate, the sample container containing the drinking water to be tested can be placed on the support plate, and the sample container can be moved upward by utilizing the elastic installation of the support plate, so that the detection plate installed at the lower end of the fixed cylinder can utilize the working electrode sheet, reference electrode sheet and auxiliary electrode sheet to extend into the sample container to perform heavy metal detection based on the electrochemical principle, and the worn working electrode sheet, reference electrode sheet and auxiliary electrode sheet can be directly disassembled and assembled from the lower end surface of the detection plate by sliding and snapping, which is convenient for replacement and helps to ensure the normal use of the device.

[0017] At the same time, the setting of the transparent cover can cover and protect the detection plate and the working electrode sheet, reference electrode sheet, and auxiliary electrode sheet. It can not only effectively prevent the device from being affected by dust when idle and affecting the detection effect, but also protect the working electrode sheet, reference electrode sheet, and auxiliary electrode sheet from being damaged by bumps.

[0018] To sum up, this device can not only use the elastically mounted support plate to automatically carry the sample container containing the drinking water to be tested to cooperate with the fixed cylinder and the detection plate for heavy metal detection, but also the working electrode sheet, reference electrode sheet and auxiliary electrode sheet on the detection plate used for heavy metal detection are convenient and quick to disassemble and assemble, which is conducive to later replacement of wear and tear, and the overall use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and enable those skilled in the relevant art to make and use the invention.

[0020] Figure 1 This is a schematic diagram of the structure of the drinking water heavy metal detection device when in use;

[0021] Figure 2 This is a schematic diagram of the structure of a drinking water heavy metal detection device;

[0022] Figure 3 This is a schematic diagram of the internal structure of a drinking water heavy metal detection device;

[0023] Figure 4 This is a schematic diagram of the structure of the detection board of the drinking water heavy metal detection device;

[0024] Figure 5 This is a schematic diagram of the structure of the sample container of the drinking water heavy metal detection device.

[0025] [reference numerals]

[0026] 1. Base; 101. Movable cavity; 2. Support plate; 201. Limiting slide; 202. Support rod; 203. Movable plate; 204. Spring; 3. Sample container; 301. Partition; 302. Salt bridge; 4. Heavy metal detector; 401. Display screen; 402. Control panel; 5. Transparent cover; 6. Fixed cylinder; 7. Detection plate; 701. Working electrode; 702. Reference electrode; 703. Auxiliary electrode.

[0027] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, devices and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0028] The following describes in detail a drinking water heavy metal detection device provided by the present invention, in conjunction with the accompanying drawings and specific embodiments. It is also noted that, to provide a more detailed description, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for some known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0029] It should be noted that references in the specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes such specific features, structures, or characteristics. In addition, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0030] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0031] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0032] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0033] like Figure 1 、 Figure 2 and Figure 3 As shown, an embodiment of the present invention provides a drinking water heavy metal detection device, comprising a base 1, wherein a support plate 2 is elastically mounted on the upper end surface of the base 1, and a sample container 3 is placed on the support plate 2, wherein a limiting slide groove 201 is provided on the upper end surface of the support plate 2, which facilitates the bottom of the sample container 3 to slide into the limiting slide groove 201 for rapid positioning, and a plurality of vertical support rods 202 are fixed to the lower end surface of the support plate 2, the lower ends of the support rods 202 are vertically inserted into the corresponding movable cavities 101 provided in the base 1, and the lower ends of the plurality of support rods 202 are commonly fixed with a horizontal movable plate 203, the movable plate 203 being horizontally placed in the movable cavity 101, and a spring 204 is fixed to the lower end surface of the movable plate 203, the lower end of the spring 204 being mounted on the bottom surface of the movable cavity 101. Therefore, the support plate 2 is elastically mounted on the upper end surface of the base 1.

[0034] At the same time, cooperate Figure 4 As shown, a heavy metal detector 4 is mounted above the base 1, and a display screen 401 and a control panel 402 are provided on the upper surface of the heavy metal detector 4. A vertical fixed cylinder 6 is installed on the lower end face of the heavy metal detector 4. The interior of the fixed cylinder 6 is hollow and is provided with an electrical wire. A horizontal detection plate 7 is fixed to the lower end of the fixed cylinder 6. Three T-shaped slots are provided on the lower end face of the detection plate 7. Conductive plates electrically connected to the heavy metal detector 4 are provided in the three T-shaped slots. A vertical working electrode plate 701, a reference electrode plate 702 and an auxiliary electrode plate 703 are sequentially mounted on the three T-shaped slots.

[0035] In specific implementation, the working electrode sheet 701 is an electrode that directly contacts the water sample to be tested and participates in the electrochemical reaction. Its material can be but is not limited to gold, platinum, glassy carbon, graphene, carbon nanotubes or certain metal oxides. For example, gold electrodes are commonly used to detect mercury ions, while glassy carbon electrodes are suitable for the detection of various heavy metal ions. The reference electrode sheet 702 is used to provide a stable potential reference to ensure that the potential measurement of the working electrode is accurate. Its material can be selected from but is not limited to silver / silver chloride and saturated calomel electrodes. The auxiliary electrode sheet 703 is used to complete the electrochemical circuit and close the transfer of current. It can be made of a material with good conductivity, such as platinum or graphite. It generally does not directly participate in the electrochemical reaction, but provides an electron path so that the current can flow between the working electrode sheet 701 and the auxiliary electrode sheet 703. The circuit arrangement in the heavy metal detector 4 usually includes a potential controller (such as a constant potential instrument) and a current measuring device. The potential controller is responsible for adjusting the potential of the working electrode relative to the reference electrode, while the current measuring device records the current generated by the electrochemical reaction on the working electrode. Among them, the working electrode sheet 701 is connected to the potential controller in the detection instrument, which can accurately adjust the potential of the working electrode. The reference electrode sheet 702 is also connected to the potential controller, but it is connected to the reference input terminal of the controller to provide a stable potential reference. The auxiliary electrode sheet 703 is connected to the auxiliary input terminal of the potential controller to complete the electrochemical circuit.

[0036] In addition, a transparent cover 5 is installed on the fixed cylinder 6 , which completely covers the working electrode 701 , the reference electrode 702 and the auxiliary electrode 703 . The outer diameter of the upper port of the sample container 3 is adapted to the inner diameter of the lower port of the transparent cover 5 .

[0037] Cooperate Figure 5 As shown, a vertical partition 301 is fixed in the middle of the sample container 3, dividing the interior of the sample container 3 into two independent chambers, and a salt bridge 302 is set on the partition 301. Therefore, the working electrode sheet 701 and the auxiliary electrode sheet 703 extend into the two independent chambers in the sample container 3 respectively, and the reference electrode sheet 702 abuts against the salt bridge 302.

[0038] The working principle provided by the present invention is that when the drinking water heavy metal detection device is in use, the sample container 3 containing the drinking water to be tested can be placed on the support plate 2, and the sample container 3 can be moved upward by utilizing the elastic installation of the support plate 2, so that the detection plate 7 installed at the lower end of the fixed cylinder 6 can utilize the working electrode sheet 701, the reference electrode sheet 702, and the auxiliary electrode sheet 703 to extend into the sample container 3 to perform heavy metal detection based on the electrochemical principle, and the worn working electrode sheet 701, the reference electrode sheet 702, and the auxiliary electrode sheet 703 can be directly disassembled and assembled from the lower end surface of the detection plate 7 by sliding and snapping, which is convenient for replacement and helps to ensure the normal use of the device.

[0039] To sum up, this device can not only use the elastically mounted support plate 2 to automatically carry the sample container 3 containing the drinking water to be tested to cooperate with the fixed cylinder 6 and the detection plate 7 for heavy metal detection, but also the working electrode sheet 701, reference electrode sheet 702 and auxiliary electrode sheet 703 on the detection plate 7 for heavy metal detection are convenient and quick to disassemble and assemble, which is conducive to later replacement of wear and tear, and the overall use effect is good.

[0040] This invention encompasses any alternatives, modifications, equivalents, and solutions that do not depart from the spirit and scope of this invention. To provide a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments of this invention, but those skilled in the art will be able to fully understand this invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A drinking water heavy metal detection device, comprising a base (1), characterized in that: A support plate (2) is elastically mounted on the upper end surface of the base (1), a sample container (3) is placed on the support plate (2), and a heavy metal detector (4) is mounted above the base (1), a vertical fixed cylinder (6) is mounted on the lower end surface of the heavy metal detector (4), a horizontal detection plate (7) is fixed to the lower end of the fixed cylinder (6), and three T-shaped slots are provided on the lower end surface of the detection plate (7), each of the three T-shaped slots is provided with a conductive sheet electrically connected to the heavy metal detector (4), and a vertical working electrode sheet (701), a reference electrode sheet (702) and an auxiliary electrode sheet (703) are sequentially mounted on the three T-shaped slots.

2. The drinking water heavy metal detection device according to claim 1, characterized in that: The upper end surface of the support plate (2) is provided with a limiting sliding groove (201), and the bottom of the sample container (3) is slidably placed in the limiting sliding groove (201).

3. The drinking water heavy metal detection device according to claim 1, characterized in that: A plurality of vertical support rods (202) are fixed to the lower end surface of the support plate (2), and the lower ends of the support rods (202) are vertically inserted into corresponding movable cavities (101) provided in the base (1).

4. The drinking water heavy metal detection device according to claim 3, characterized in that: A horizontal movable plate (203) is commonly fixed to the lower ends of the plurality of support rods (202), the movable plate (203) is horizontally placed in the movable cavity (101), and a spring (204) is fixed to the lower end surface of the movable plate (203), and the lower end of the spring (204) is installed on the inner bottom surface of the movable cavity (101).

5. The drinking water heavy metal detection device according to claim 1, characterized in that: A transparent cover (5) is also installed on the fixed cylinder (6), and the transparent cover (5) completely covers the working electrode sheet (701), the reference electrode sheet (702) and the auxiliary electrode sheet (703). The outer diameter of the upper port of the sample container (3) is adapted to the inner diameter of the lower port of the transparent cover (5).

6. The drinking water heavy metal detection device according to claim 5, characterized in that: A vertical partition (301) is fixed in the middle of the sample container (3), dividing the interior of the sample container (3) into two independent chambers, and a salt bridge (302) is built on the partition (301).

7. The drinking water heavy metal detection device according to claim 6, characterized in that: The working electrode sheet (701) and the auxiliary electrode sheet (703) are respectively extended into two independent chambers in the sample container (3), and the reference electrode sheet (702) is in contact with the salt bridge (302).

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