Water body heavy metal detection device based on micro-fluidic chip

Abstract

The utility model belongs to the technical field of water body heavy metal detection, and particularly relates to a water body heavy metal detection device based on a micro-fluidic chip, the detection device comprises a lower shell, an upper shell and a micro-fluidic chip main body, the lower shell is buckled with the upper shell, the micro-fluidic chip main body is arranged on the inner bottom wall of the lower shell, and the upper shell is buckled with the micro-fluidic chip main body. A detection head is installed on one short side of the upper shell, and the periphery of the lower shell is connected with a dustproof mechanism. The dustproof mechanism comprises two strip-shaped grooves, two movable sleeve blocks, two L-shaped connecting rods and a dustproof sleeve, the two strip-shaped grooves are formed in the two long edges of the upper shell correspondingly, the two movable sleeve blocks are slidably connected into the strip-shaped grooves correspondingly, the end of the long edge of each L-shaped connecting rod is rotationally connected to the corresponding movable sleeve block through a rotating shaft, and the end of the long edge of each L-shaped connecting rod is connected to the corresponding dustproof sleeve through a rotating shaft. The ends of the short edges of the two L-shaped connecting rods are connected with the dustproof sleeve, the two L-shaped connecting rods and the dustproof sleeve form a [-shaped structure, and the dustproof sleeve is arranged on the periphery of the detection head in a sleeving mode. According to the utility model, the dustproof mechanism is arranged, so that the detection head can obtain a better dustproof effect when the detection head is not used, thereby preventing dust from entering to cause errors on the accuracy of later detection; the L-shaped connecting rod is rotationally connected with the movable sleeve block, so that the dustproof sleeve can be rotated to the other end when protection is not needed in the later period, and the dustproof sleeve cannot be lost and cannot affect use.

Description

Technical Field

[0001] The utility model belongs to the technical field of heavy metal detection in water bodies, and in particular relates to a heavy metal detection device in water bodies based on a microfluidic chip. Background Art

[0002] The water body heavy metal detection system based on microfluidic chip is a new detection technology. It uses microfluidic chip as a platform to quickly and accurately detect heavy metal ions in water. The basic principle of the system is to use the microchannel and surface functionalization technology of microfluidic chip to enrich, separate and detect heavy metal ions in water samples. Specifically, the microchannel of microfluidic chip can enrich heavy metal ions in water samples, and then separate heavy metal ions into different detection areas through surface functionalization technology. During the overall use period, the water quality of different areas is mostly moved for detection. The original equipment is too large and it is inconvenient to operate. Moreover, the detection head needs to be dustproof after use to avoid inaccurate detection in the later stage. However, the current dustproof is to connect a cover body, which is removed when using and installed after use. This is easy to cause loss, which brings certain inconveniences. For this reason, we provide a water body heavy metal detection system based on microfluidic chip. Utility Model Content

[0003] The utility model provides a device for detecting heavy metals in water based on a microfluidic chip, so as to more accurately solve the problems raised in the above-mentioned background technology.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a water body heavy metal detection device based on a microfluidic chip, comprising a lower shell, an upper shell and a microfluidic chip body, wherein:

[0005] The lower shell is buckled with the upper shell, the microfluidic chip body is installed on the inner bottom wall of the lower shell, a detection head is installed on a shorter side of the upper shell, and a dustproof mechanism is connected to the periphery of the lower shell;

[0006] The dustproof mechanism includes two strip grooves, two movable sleeves, two L-shaped connecting rods and a dustproof sleeve. The two strip grooves are respectively opened on the two longer sides of the upper shell body. The two movable sleeves are respectively slidably connected in a strip groove. The end of the long side of each L-shaped connecting rod is rotatably connected to a movable sleeve block through a rotating shaft. The ends of the short sides of the two L-shaped connecting rods are connected to the dustproof sleeve. The two L-shaped connecting rods and the dustproof sleeve form a U-shaped structure, and the dustproof sleeve is arranged on the periphery of the detection head.

[0007] As a further preferred embodiment of the utility model, the dustproof mechanism also includes two fixed cross bars and two springs, each fixed cross bar is horizontally arranged in a strip-shaped groove; the movable sleeve block is slidably sleeved on the fixed cross bar; each spring is sleeved on a fixed cross bar; one end of each spring is connected to a strip-shaped groove wall, and the other end is connected to a movable sleeve block.

[0008] As a further preference of the utility model, an internal threaded barrel is installed on one side of the upper shell body on which the detection head is installed, a first electrical contact is installed on the inner bottom wall of the internal threaded barrel, an end of the detection head away from the detection end is connected to an external threaded column, and an end of the external threaded column away from the detection head is installed with a second electrical contact; when the external threaded column and the internal threaded barrel are matched, the first electrical contact is in contact with the second electrical contact.

[0009] As a further preferred embodiment of the present invention, a clamping member is fixedly connected to a side of the lower shell facing away from the upper shell.

[0010] As a further preference of the utility model, a control button, a display screen and a switch button are respectively installed on the microfluidic chip body; the top surface of the upper shell is respectively provided with a first through groove, a through hole and a second through groove corresponding to the control button, the display screen and the switch button.

[0011] Through the above technical solution, compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model provides a dustproof mechanism so that the detection head can obtain a better dustproof effect when not in use, thereby preventing dust from entering and causing errors in the accuracy of subsequent detection; and through the rotation connection between the L-shaped connecting rod and the movable cover block, the dust cover can be rotated to the other end when protection is not needed later, so that it will not be lost and will not affect the use.

[0013] 2. The utility model provides a clamping piece so that the whole can be more conveniently clamped on a certain position of clothing when in use, thereby facilitating carrying; and by providing an internal threaded tube and an external threaded column, the detection head has a certain disassembly and assembly capability, thereby facilitating later replacement or maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of an upper shell of an embodiment of the utility model;

[0017] Figure 3 This is a structural cross-sectional view of a lower housing of an embodiment of the utility model;

[0018] Figure 4 This is an embodiment of the utility model Figure 1 A magnified view of the structure at center A;

[0019] Figure 5 The figure is a schematic structural diagram of a detection head according to an embodiment of the utility model.

[0020] In the figure: 1. lower shell; 2. upper shell; 3. microfluidic chip body; 4. detection head; 5. strip groove; 6. fixed cross bar; 7. spring; 8. movable sleeve block; 9. L-shaped connecting rod; 10. dust cover; 11. internal threaded cylinder; 12. first electrical contact; 13. external threaded column; 14. second electrical contact; 15. clamping piece; 16. control button; 17. display screen; 18. switch button; 19. first through groove; 20. second through groove; 21. through hole. DETAILED DESCRIPTION

[0021] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0022] In the description of the present utility model, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second" and the like do not indicate the importance of the components, and therefore cannot be understood as limiting the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention. Example 1

[0023] This embodiment provides a preferred implementation scheme, a device for detecting heavy metals in water based on a microfluidic chip, such as Figures 1 to 5 As shown, this embodiment includes a lower shell 1, an upper shell 2 and a microfluidic chip body 3. The lower shell 1 is snapped together with the upper shell 2. The microfluidic chip body 3 is installed on the inner bottom wall of the lower shell 1. A detection head 4 is installed on a shorter side of the upper shell 2. The periphery of the lower shell 1 is connected to a dustproof mechanism.

[0024] The above-mentioned dust-proof mechanism includes two strip grooves 5, two movable sleeve blocks 8, two L-shaped connecting rods 9 and a dust cover 10. The two strip grooves 5 are respectively opened on the two longer sides of the upper shell body 2. The two movable sleeve blocks 8 are respectively slidably connected in a strip groove 5. The end of the long side of each L-shaped connecting rod 9 is rotatably connected to a movable sleeve block 8 through a rotating shaft. The ends of the short sides of the two L-shaped connecting rods 9 are connected to the dust cover 10. The two L-shaped connecting rods 9 and the dust cover 10 form a U-shaped structure. The dust cover 10 is sleeved on the periphery of the detection head 4.

[0025] The microfluidic chip body 3 is respectively equipped with a control button 16, a display screen 17 and a switch button 18; the top surface of the upper shell 2 is respectively provided with a first through slot 19, a through hole 21 and a second through slot 20 corresponding to the control button 16, the display screen 17 and the switch button 18. When the lower shell 1 is buckled with the upper shell 2, the control button 16, the display screen 17 and the switch button 18 on the microfluidic chip body 3 are respectively exposed from the first through slot 19, the through hole 21 and the second through slot 20 on the top surface of the upper shell 2, which is convenient for the operator to operate.

[0026] The dustproof mechanism of this embodiment further includes two fixed cross bars 6 and two springs 7, each fixed cross bar 6 is horizontally arranged in a strip groove 5; the movable sleeve block 8 is slidably sleeved on the fixed cross bar 6; each spring 7 is sleeved on a fixed cross bar 6; one end of each spring 7 is connected to the groove wall of a strip groove 5, and the other end is connected to a movable sleeve block 8.

[0027] Among them, by setting the fixed cross bar 6 and the spring 7, the dust cover 10 can better cooperate with the fixed cross bar 6, the movable cover block 8 and the L-shaped connecting rod 9 when not subject to force and reset under the rebound force of the spring 7, so that the dust cover 10 has a certain pulling force after moving back, so that it can contact the end of the upper shell 2 more stably.

[0028] In the present embodiment, an internally threaded barrel 11 is installed on one side of the upper shell 2 where the detection head 4 is installed, a first electrical contact 12 is installed on the inner bottom wall of the internally threaded barrel 11, an externally threaded column 13 is connected to the end of the detection head 4 away from the detection end, and a second electrical contact 14 is installed on the end of the externally threaded column 13 away from the detection head 4; when the externally threaded column 13 cooperates with the internally threaded barrel 11, the first electrical contact 12 is in contact with the second electrical contact 14.

[0029] Among them, by providing the internal threaded tube 11 and the external threaded column 13, the detection head 4 has better rotation and disassembly performance, and in combination with the second electrical contact 14 and the first electrical contact 12, the detection head 4 can be conductive after installation, thereby meeting better usage requirements.

[0030] In this embodiment, a clamping member 15 is fixedly connected to the side of the lower housing 1 facing away from the upper housing 2. The clamping member 15 is convenient for clamping the detection device at a specified position.

[0031] How this implementation works:

[0032] When the microfluidic chip-based heavy metal detection device for water bodies is used, it can be clamped at a designated position by the clamp 15 when it needs to be carried;

[0033] When it is needed, just release the clamp 15 directly; then pull the dust cover 10 axially along the fixed cross bar 6, so that the L-shaped connecting rod 9 drives the movable cover block 8 to move axially along the fixed cross bar 6 toward the detection head 4, and the spring 7 is stretched at this time; when the dust cover 10 is pulled and no longer covers the detection head 4, the movable cover block 8 is used as the rotation point, and the dust cover 10 and the L-shaped connecting rod 9 are rotated along the height direction of the device, so that the dust cover 10 is rotated to the side of the upper shell 2 away from the detection head 4, and finally the force on the dust cover 10 is released, and the spring 7 automatically resets; then the detection head 4 can detect the water body, and the control button 16 and the switch button 18 can be operated in coordination during this period;

[0034] After the detection is completed, the dust cover 10 is pulled axially along the fixed cross bar 6 again, so that the L-shaped connecting rod 9 drives the movable cover block 8 to move axially away from the detection head 4 along the fixed cross bar 6, and the spring 7 is stretched at this time; then the dust cover 10 and the L-shaped connecting rod 9 are rotated along the height direction of the device, and the dust cover 10 is rotated to the side of the upper shell 2 where the detection head 4 is provided, and the dust cover 10 is aligned with the detection head 4. The force on the dust cover 10 is released, and the spring 7 is automatically reset, driving the dust cover 10 to cover the detection head 4 again.

[0035] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as generally understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0036] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only an example and does not constitute a limitation of this specification. Although it is not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this specification. Such modifications, improvements and corrections are suggested in this specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of this specification. At the same time, this specification uses specific words to describe the embodiments of this specification. For example, "one embodiment", "one embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of this specification. Therefore, it should be emphasized and noted that "one embodiment" or "one embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of this specification can be appropriately combined. In addition, unless explicitly stated in the claims, the order of processing elements and sequences described in this specification, the use of alphanumeric characters, or the use of other names are not used to limit the order of the processes and methods of this specification.

[0037] The meaning of "and / or" described in this application means that the situations where each exists alone or both exist at the same time are included.

[0038] The term “connection” as used in this application may mean a direct connection between components or an indirect connection between components via other components.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for detecting heavy metals in water based on a microfluidic chip, characterized in that: It includes a lower housing (1), an upper housing (2) and a microfluidic chip body (3), where: The lower housing (1) is buckled with the upper housing (2). The microfluidic chip body (3) is installed on the inner bottom wall of the lower housing (1). A detection head (4) is installed on a shorter side of the upper housing (2). A dust-proof mechanism is connected to the periphery of the lower housing (1). The dust-proof mechanism includes two strip-shaped grooves (5), two moving sleeve blocks (8), two L-shaped connecting rods (9) and a dust-proof sleeve (10). The two strip-shaped grooves (5) are respectively opened on the two longer sides of the upper housing (2). The two moving sleeve blocks (8) are respectively slidably connected in a strip-shaped groove (5). The end of the long side of each L-shaped connecting rod (9) is rotatably connected to a moving sleeve block (8) through a rotating shaft. The ends of the short sides of the two L-shaped connecting rods (9) are both connected to the dust-proof sleeve (10). The two L-shaped connecting rods (9) and the dust-proof sleeve (10) form a C-shaped structure. The dust-proof sleeve (10) is sleeved on the periphery of the detection head (4).

2. The device for detecting heavy metals in water based on a microfluidic chip according to claim 1, characterized in that: The dust-proof mechanism further includes two fixed cross bars (6) and two springs (7). Each fixed cross bar (6) is horizontally arranged in a strip-shaped groove (5). The moving sleeve block (8) is slidably sleeved on the fixed cross bar (6). Each spring (7) is sleeved on a fixed cross bar (6). One end of each spring (7) is connected to the groove wall of a strip-shaped groove (5), and the other end is connected to a moving sleeve block (8).

3. The device for detecting heavy metals in water based on a microfluidic chip according to claim 1, characterized in that: An internal thread cylinder (11) is installed on the side of the upper housing (2) where the detection head (4) is installed. A first electrical contact (12) is installed on the inner bottom wall of the internal thread cylinder (11). An external thread column (13) is connected to the end of the detection head (4)背离 the detection end. A second electrical contact (14) is installed on the end of the external thread column (13)背离 the detection head (4). When the external thread column (13) is matched with the internal thread cylinder (11), the first electrical contact (12) is in contact with the second electrical contact (14).

4. The device for detecting heavy metals in water based on a microfluidic chip according to claim 1, characterized in that: A clamping member (15) is fixedly connected to the side of the lower housing (1)背离 the upper housing (2).

5. The device for detecting heavy metals in water based on a microfluidic chip according to claim 1, characterized in that: A control button (16), a display screen (17) and a switch button (18) are respectively installed on the microfluidic chip body (3). First through grooves (19), through holes (21) and second through grooves (20) corresponding to the control button (16), the display screen (17) and the switch button (18) are respectively opened on the top surface of the upper housing (2).

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