Sensor structure for organic matter detection

Abstract

The utility model relates to the technical field of organic matter detection, in particular to a sensor structure for organic matter detection, which comprises a first shell, a second shell and a third shell, the first shell comprises a mounting part and a detection part, and a first extension structure and a second extension structure are arranged at one end, far away from the mounting part, of the detection part; the second shell is detachably connected to the second extension structure and covers the second extension structure, and a detection area for water sample circulation is formed between the second shell and the first extension structure. The sensor structure provided by the utility model comprises a light source capable of emitting ultraviolet light and two light receivers, the sensor structure is provided with an open type detection area, and the sensor structure can be inserted into a circulation channel of a water sample in an inserting manner, so that the water sample flows through the detection area; the sensor is more favorable for realizing the installation and separation of the sensor and an equipment pipeline, and is more favorable for promoting the modularization and miniaturization progress of the sensor at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to organic matter detection technical field, and specifically related to organic matter detection sensor structure. BACKGROUND

[0002] More and more products use organic matter detection sensor, and its basic principle is to use ultraviolet light source to emit ultraviolet rays, and after being detected water sample, ultraviolet rays are received by light receiver. In this process, part of ultraviolet rays is absorbed by organic matter in water sample, and the content of organic matter in water sample is calculated by calculating the attenuation of ultraviolet rays from emission to reception.

[0003] Organic matter sensor is developing towards miniaturization and integration, therefore, from the previous two light sources, two light receivers are configured to one light source and two light receivers, such as the organic matter sensor and application thereof disclosed in Chinese patent with publication number CN209707367U, but since the sensor is provided with fixed pipe for passing water sample, it is not conducive to separate the sensor from the equipment using the sensor as a whole, and it is not conducive to the installation, disassembly and miniaturization design of the product. UTILITY MODEL CONTENT

[0004] In view of the technical problems existing in the prior art of organic matter detection sensor, the first aspect of the utility model provides a sensor structure for organic matter detection, comprising:

[0005] A first housing comprises a mounting portion and a detection portion, and a first extension structure and a second extension structure are arranged at the end of the detection portion away from the mounting portion;

[0006] A second housing is detachably connected to the second extension structure and covers the outside of the second extension structure, and a detection area for water sample flow is formed between the second housing and the first extension structure;

[0007] A light source capable of emitting ultraviolet rays is arranged in the first extension structure;

[0008] A first light receiver capable of detecting the intensity of ultraviolet rays emitted from the light source is arranged in the second extension structure, and a first light path is formed between the light source and the first light receiver;

[0009] A second light receiver capable of detecting the intensity of ultraviolet rays emitted from the light source is arranged in the first housing, and a second light path is formed between the light source and the second light receiver;

[0010] Among them, the first light path passes through the detection area, and the second light path does not pass through the detection area;

[0011] The first extending structure forms a light emitting surface towards one side of a second housing, the second housing forms a light receiving surface towards one side of the first extending structure, and the detection area is formed between the light emitting surface and the light receiving surface.

[0012] Preferably, the detection area is sealedly connected with the light source through a first isolation structure, and the detection area is sealedly connected with the first light receiver through a second isolation structure, and the first isolation structure and the second isolation structure are transparent to ultraviolet rays.

[0013] Preferably, the first extending structure is provided with a first window towards one side of the detection area, and the first isolation structure is mounted to the outside of the first window.

[0014] Preferably, the second extending structure is provided with a second window towards one side of the detection area, and the second housing is mounted outside the second extending structure, a limiting groove clamping the second isolation structure is formed between the light window of the second housing and the second window, and the second isolation structure is in the limiting groove.

[0015] Preferably, the outside of the second window is provided with a sealing seat, and a sealing gasket is arranged between the sealing seat and the second isolation structure.

[0016] Preferably, the first isolation structure and the second isolation structure are quartz glass.

[0017] Preferably, the second housing is arranged to be assembled to the outside of the second extending structure from the side of the second extending structure away from the detection part towards the detection part.

[0018] Preferably, the outer wall of the second extending structure is provided with a clamping block, and the second housing is provided with a clamping groove matched with the clamping block.

[0019] Compared with the prior art, the sensor structure has the following advantages:

[0020] The sensor structure disclosed by the utility model contains a light source capable of emitting ultraviolet light and two light receivers, and forms a first light path for detecting organic matter and a second light path as a control, respectively. The sensor structure has an open detection area, and can be inserted into a flow channel of a water sample in a plug-in manner, so that the water sample flows through the detection area. The first light path detects the content of organic matter by passing through the detection area, and the second light path does not pass through the detection area, and is used as a control of light intensity to calibrate the detection result. This sensor is more conducive to the installation and separation of the device pipeline, and is more conducive to promoting the progress of the sensor towards modularization and miniaturization. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures can be represented by a like numeral. For purposes of clarity, not every component can be called out in every drawing. There will now be described, by way of example, various aspects of the present application with reference to the accompanying drawings in which:

[0022] Figure 1 is a structural schematic view of the sensor structure for organic matter detection shown in the present application;

[0023] Figure 2 is a schematic view of the first shell and the second shell in a separated state shown in the present application;

[0024] Figure 3 is a cross-sectional structural schematic view of the sensor structure for organic matter detection shown in the present application. DETAILED DESCRIPTION

[0025] In order to better understand the technical content of the present application, specific embodiments are described below with reference to the accompanying drawings.

[0026]

Sensor structure for organic matter detection

[0027] In combination with Figures 1 to 3 the present application, a first aspect of the present application proposes a sensor structure for organic matter detection, comprising a first shell 10, a second shell 20, a light source 31, a first light receiver 41 and a second light receiver 50.

[0028] The first shell 10 comprises a mounting portion 101 and a detection portion 102, and the detection portion 102 is provided with a first extension structure 11 and a second extension structure 12 at an end away from the mounting portion 101, and the first extension structure 11 and the second extension structure 12 form an extension portion 103.

[0029] This structure is more conducive to the installation and disassembly of the sensor, and is also conducive to the miniaturized design of the sensor.

[0030] The second shell 20 is detachably connected to the second extension structure 12 and covers the outside of the second extension structure 12, and a detection area 104 for water sample flow is formed between the second shell 20 and the first extension structure 11.

[0031] In combination with Figure 1 the present application, the first extension structure 11 forms a light emitting surface towards one side of the second shell 20, and the second shell 20 forms a light receiving surface towards one side of the first extension structure 11, and the detection area 104 is formed between the light emitting surface and the light receiving surface.

[0032] In this way, the sensor can be connected or disconnected from the flow path of the water sample in a plug-in manner. For example, the flow path of the water sample is formed by a pipe, a through hole is formed in the pipe, the first housing 10 is inserted into the through hole, the mounting portion 101 is exposed outside the pipe, the detection portion 102 is consistent with or slightly larger than the wall thickness of the pipe, and the extension portion 103 extends into the pipe, so that the water sample can flow through the detection area 104 in the pipe.

[0033] Further, the light source 31 capable of emitting ultraviolet light is arranged in the first extension structure 11, and the first light receiver 41 capable of detecting the intensity of the ultraviolet light emitted by the light source 31 is arranged in the second extension structure 12, and the first light path is formed between the light source 31 and the first light receiver 41.

[0034] The second light receiver 50 capable of detecting the intensity of the ultraviolet light emitted by the light source 31 is arranged in the first housing 10, and the second light path is formed between the light source 31 and the second light receiver 50, wherein the first light path passes through the detection area 104, and the second light path does not pass through the detection area 104.

[0035] In this way, the first light path serves as a detection light path, the first light path passes through the detection area 104, part of the light is absorbed by the organic matter in the water sample in the detection area 104, and the light intensity received by the first light receiver 41 is weakened, and the second light path serves as a control group light path, there is no organic matter in the second light path, and the light intensity received by the second light receiver 50 is not weakened by the absorption of the organic matter.

[0036] By comparing the difference in light intensity received by the first light receiver 41 and the second light receiver 50, the absorbance of the water sample under ultraviolet light irradiation can be calculated. According to the linear relationship between the absorbance and the concentration of the organic matter (within a certain concentration range), the concentration of the organic matter in the water sample can be derived.

[0037] Further, the detection area 104 and the light source 31 are sealingly connected through the first isolation structure 30, and the detection area 104 and the first light receiver 41 are sealingly connected through the second isolation structure 40, and the first isolation structure 30 and the second isolation structure 40 are transparent to ultraviolet light.

[0038] Preferably, the first isolation structure 30 and the second isolation structure 40 are quartz glass.

[0039] Since the quartz glass has high transmittance to each wave band of ultraviolet light, and the quartz glass pipe can maintain high light transmittance and is not prone to aging when exposed to ultraviolet light for a long time, the light attenuation caused by aging of the light transmittance material in the light path can be reduced.

[0040] In combination Figure 3As shown, the first extension structure 11 is provided with a first window 111 on one side of the detection area 104, and the first isolation structure 30 is installed outside the first window 111.

[0041] Specifically, the first isolation structure 30 is configured as a disc-shaped quartz glass, and is adhered to the outside of the first window 111 by using a sealant, so as to separate the inside and outside of the first window 111 by the disc-shaped quartz glass. The light source 31 and the driving circuit board 32 of the light source are fixed together inside the first extension structure 11.

[0042] In combination Figure 3 As shown, the second extension structure 12 is provided with a second window 123 on one side of the detection area 104, and the second housing 20 is installed outside the second extension structure 12, so as to form a limiting groove 121 clamping the second isolation structure 40 between the light window 21 of the second housing 20 and the second window 123, and the second isolation structure 40 is located in the limiting groove 121.

[0043] In this way, the second window 123 and the light window 21 of the second housing 20 are separated by the second isolation structure 40, and the water sample cannot pass through the second isolation structure 40 to enter the inside of the second extension structure 12, and the second light receiver 41 and the driving circuit board 42 thereof are arranged inside the second extension structure 12.

[0044] Further, the main circuit board 51 is arranged inside the housing, and the second light receiver 50 is connected to the main circuit board 51, and the main circuit board 51 is electrically connected to the driving circuit board 32 of the light source and the driving circuit board 42 of the first light receiver 41.

[0045] Further, the outside of the second window 123 is provided with a sealing seat 122, and a sealing gasket 124 is arranged between the sealing seat 122 and the second isolation structure 40. In this way, the sealing property of the second isolation structure 40 can be improved by arranging the sealing gasket 124.

[0046] In an optional embodiment, the second housing 20 is arranged to be assembled to the outside of the second extension structure 12 from the side of the second extension structure 12 away from the detection part 102 to the direction of the detection part 102.

[0047] In this embodiment, the outer wall of the second extension structure 12 is provided with a clamping block 13, and the second housing 20 is provided with a clamping groove matched with the clamping block 13.

[0048] In this way, when the second housing 20 is assembled, the second isolation structure 40 is first inserted into the limiting groove 121, and then the second housing 20 is clamped into the outside of the second extension structure 12 from bottom to top, so that the clamping block 13 and the clamping groove are clamped together, thereby realizing the assembly of the second housing 20.

[0049] In combination with the above embodiments, the sensor structure contains a light source capable of emitting ultraviolet light and two light receivers, respectively forming a first light path for detecting organic matter and a second light path as a control, the sensor structure has an open detection area, the sensor structure can be inserted into the flow channel of the water sample in a plug-in manner, the water sample flows through the detection area, the first light path detects the organic matter content by passing through the detection area, and the second light path does not pass through the detection area and is used as a control of light intensity to calibrate the detection result, and the sensor is more conducive to installation and separation with the equipment pipeline and is more conducive to promoting the progress of the sensor to modularization and miniaturization.

[0050] Although the utility model has disclosed as above with preferred embodiments, it is not used to limit the utility model. Those skilled in the art to which the utility model belongs can make various changes and decorations without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the definition of the claims.

Claims

1. A sensor structure for detecting organic matter, characterized in that, include: A first housing (10) includes a mounting portion (101) and a detection portion (102). The detection portion (102) has a first extension structure (11) and a second extension structure (12) at one end away from the mounting portion (101). The second housing (20) is detachably connected to the second extension structure (12) and covers the outside of the second extension structure (12), forming a detection area (104) for water sample flow between the second housing (20) and the first extension structure (11). A light source (31) capable of emitting ultraviolet light is disposed within the first extension structure (11); A first light receiver (41) capable of detecting the intensity of ultraviolet light emitted from the light source (31) is disposed within the second extension structure (12), and a first optical path is formed between the light source (31) and the first light receiver (41); A second light receiver (50) capable of detecting the intensity of ultraviolet light emitted from the light source (31) is disposed inside the first housing (10), and a second light path is formed between the light source (31) and the second light receiver (50); The first optical path passes through the detection area (104), while the second optical path does not pass through the detection area (104). The first extension structure (11) forms a light emitting surface on one side of the second housing (20), and the second housing (20) forms a light receiving surface on one side of the first extension structure (11). The detection area (104) is formed between the light emitting surface and the light receiving surface.

2. The sensor structure for detecting organic matter according to claim 1, characterized in that, The detection area (104) is sealed to the light source (31) through a first isolation structure (30), and the detection area (104) is sealed to the first light receiver (41) through a second isolation structure (40). The first isolation structure (30) and the second isolation structure (40) are transparent to ultraviolet light.

3. The sensor structure for detecting organic matter according to claim 2, characterized in that, The first extension structure (11) is configured to have a first window (111) facing one side of the detection area (104), and the first isolation structure (30) is installed on the outside of the first window (111).

4. The sensor structure for detecting organic matter according to claim 2, characterized in that, The second extension structure (12) has a second window (123) on one side of the detection area (104). After the second housing (20) is installed outside the second extension structure (12), a limiting groove (121) for clamping the second isolation structure (40) is formed between the light window (21) and the second window (123) of the second housing (20). The second isolation structure (40) is located in the limiting groove (121).

5. The sensor structure for detecting organic matter according to claim 4, characterized in that, A sealing seat (122) is provided on the outside of the second window (123), and a sealing gasket (124) is provided between the sealing seat (122) and the second isolation structure (40).

6. The sensor structure for detecting organic matter according to claim 2, 3, or 4, characterized in that, The first isolation structure (30) and the second isolation structure (40) are made of quartz glass.

7. The sensor structure for detecting organic matter according to claim 1, characterized in that, The second housing (20) is configured to be assembled to the outside of the second extension structure (12) from the side of the second extension structure (12) away from the detection portion (102) toward the detection portion (102).

8. The sensor structure for detecting organic matter according to claim 7, characterized in that, The outer wall of the second extension structure (12) is provided with a locking block (13), and the second housing (20) is provided with a locking groove that cooperates with the locking block (13).

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