A light source light detection assembly applied to water quality online equipment

Abstract

The utility model discloses a light source light detection subassembly applied to water quality on -line equipment relates to water quality on -line monitoring equipment technical field, it includes installation frame body, light source, light detection, light source base and light detection base. The utility model discloses through with light source and light detection are installed respectively to light source PCB board and light detection PCB board, adjusts the angle and position of light source and light detection on the installation frame body, changes to only need to position on light source PCB board again light source base, and position on light detection PCB board to light detection, greatly reduces the positioning difficulty of light source and light detection, makes light source and light detection's installation difficulty be lower, more easily realize the positioning of high coaxial degree, and reduced the influence degree of light source and light detection when installing the technical level of installation personnel.

Description

Technical Field

[0001] This utility model relates to the technical field of online water quality monitoring equipment, and in particular to a light source photodetector component used in online water quality monitoring equipment. Background Technology

[0002] A single-parameter online water quality device is an automated instrument that monitors a specific indicator (such as COD, ammonia nitrogen, total phosphorus, total nitrogen, turbidity, etc.) in water in real time. This device includes a digester, which reacts pollutants (such as organic matter, ammonia, phosphorus, etc.) in the water sample with chemical reagents at high temperatures, converting the target components into a form measurable by colorimetry or other methods. Therefore, the digester typically includes a colorimetric system (optical detector). The optical detector detects the color change after the water sample reaction, thereby quantitatively analyzing the concentration of a specific pollutant. The optical detector usually includes a light source, an optical path channel, and a colorimetric cell. When the light source illuminates a substance passing through the optical path channel, its color changes, which are received and compared by the optical detector, thus identifying the concentration of the substance based on the color change.

[0003] After the light emitted by the light source passes through the material in the optical path channel, it illuminates the photodetector. It is necessary to ensure that the light source and the photodetector have a high degree of coaxiality. However, the existing light source and photodetector components lack positioning during installation. The angle of the light source and the photodetector needs to be repeatedly adjusted to ensure coaxiality. This results in unstable coaxiality between the light source and the photodetector, which is greatly affected by the skill level of the installer during installation. Utility Model Content

[0004] The main purpose of this invention is to propose a light source detection component for use in online water quality equipment, aiming to solve the technical problem that the coaxiality of existing light source detection components is affected by the level of the installer due to the lack of positioning.

[0005] To achieve the above objectives, this utility model proposes a light source detection assembly for use in online water quality equipment, comprising: a mounting frame, wherein a first positioning hole and a second positioning hole are coaxially provided on the side wall of the mounting frame, a light source base is coaxially disposed in the first positioning hole, and a light detection base is coaxially disposed in the second positioning hole; a light source, wherein the light source is vertically disposed on a light source PCB board, the light source PCB board is attached to the end face of the light source base, and the light source is installed inside the light source base; and a light detector, wherein the light detector is vertically disposed on a light detector PCB board, the light detector PCB board is attached to the end face of the light detector base, and the light detector is disposed inside the light detector base.

[0006] Optionally, a light source base and a light inspection base are also included; the light source base is detachably installed in the first positioning hole, and the light source base is provided with a first calibration hole, a second calibration hole and a third calibration hole in sequence. The light source is located in the second calibration hole, the light source PCB board is installed in the third calibration hole, and the end face of the light source PCB board abuts against the end face of the third calibration hole. The first calibration hole is located inside the mounting frame.

[0007] Optionally, the optical inspection base is detachably installed in the second positioning hole. The optical inspection base is provided with a fourth calibration hole, a fifth calibration hole and a sixth calibration hole in sequence. The optical inspection is located in the fifth calibration hole, and the optical inspection PCB board is installed in the sixth calibration hole. The fourth calibration hole is located inside the mounting frame, and the first calibration hole is coaxially aligned with the fourth calibration hole.

[0008] Optionally, a light source fixing tube and a light source shielding tube are provided between the light source and the light source PCB board. The light source fixing tube is coaxially arranged in the second calibration hole. The light source PCB board is installed on one end face of the light source fixing tube, and the axis of the light source fixing tube is perpendicular to the light source PCB board. The light source is fixed on the light source fixing tube through the light source shielding tube. A light inspection fixing tube and a light inspection shielding tube are provided between the light inspection and the light inspection PCB board. The light inspection fixing tube is coaxially arranged in the fifth calibration hole. The light inspection PCB board is installed on one end face of the light inspection fixing tube, and the axis of the light inspection fixing tube is perpendicular to the light inspection PCB board. The light inspection is fixed on the light inspection fixing tube through the light inspection shielding tube.

[0009] Optionally, the light source fixing tube has a first threaded hole coaxial with the tube cavity. The diameter of the first threaded hole is larger than the inner diameter of the light source fixing tube. The light source shielding tube is provided with a first threaded part. The light source is cylindrical. A first annular protrusion is provided on the peripheral wall of the light source. The first threaded part is threadedly connected to the first threaded hole, and the first threaded part presses the first annular protrusion of the light source against the bottom wall of the first threaded hole.

[0010] Optionally, the optical inspection fixing tube has a second threaded hole coaxial with the tube cavity. The diameter of the second threaded hole is larger than the inner diameter of the optical inspection fixing tube. The optical inspection shielding tube is provided with a second threaded part. The optical inspection is cylindrical. A second annular protrusion is provided on the peripheral wall of the optical inspection. The second threaded part is threadedly connected to the second threaded hole, and the second threaded part presses the second annular protrusion of the optical inspection against the bottom wall of the second threaded hole.

[0011] Optionally, the outer peripheral wall of the light source base is provided with a first limiting protrusion, and the mounting frame is a square frame, with the first limiting protrusion fitting against the side wall of the mounting frame; the outer peripheral wall of the optical inspection base is provided with a second limiting protrusion, with the second limiting protrusion fitting against the side wall of the mounting frame away from the light source base.

[0012] Optionally, a first tightening cap is installed on the side of the light source base away from the light inspection base, and the light source and the light source PCB board are disposed in the cavity formed by the first tightening cap and the light source base; a second tightening cap is installed on the side of the light inspection base away from the light source base, and the light inspection and the light inspection PCB board are disposed in the cavity formed by the second tightening cap and the light inspection base.

[0013] Optionally, a first double-sided wire guard is provided through the end wall of the first tightening cap, and the circuit of the light source PCB board passes through the middle of the first double-sided wire guard. The first double-sided wire guard is used to seal the gap between the circuit of the light source PCB board and the end wall of the first tightening cap.

[0014] Optionally, a second double-sided wire guard is provided through the end wall of the second tightening cap, through which the circuit of the optical inspection PCB passes. The second double-sided wire guard is used to seal the gap between the circuit of the optical inspection PCB and the end wall of the second tightening cap.

[0015] This invention achieves high coaxiality installation of the light source and the light detector by vertically mounting the light source PCB board and the light detector on the light detector PCB board, respectively. The mounting frame has a first and a second coaxial positioning hole on its side wall. During installation, since the light source and the light source PCB board are perpendicular, only the position of the light source PCB board on the end face of the light source base needs to be positioned to ensure coaxiality between the light source and the base. Similarly, the position of the light detector PCB board is adjusted to position the light detector on the axis of the light detector base. Then, the positioned light source base and light detector base are respectively installed in the first and second positioning holes, achieving high coaxiality installation of the light source and the light detector. This invention significantly reduces the difficulty of positioning the light source and the light detector by mounting them separately on the light source PCB board and the light detector PCB board, making it easier to achieve high coaxiality positioning and reducing the impact of the installer's skill level on the installation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a front view schematic diagram of the light source optical detection component in this utility model;

[0018] Figure 2 This is a left view of the light source optical detection component in this utility model;

[0019] Figure 3 for Figure 2 Schematic diagram of the cross section of AA;

[0020] Figure 4 This is a sectional view of the mounting frame;

[0021] Figure 5 for Figure 3 Enlarged view of region B in the middle;

[0022] Figure 6 for Figure 3 A magnified view of region C in the middle.

[0023] Explanation of icon numbers:

[0024] 1. Mounting frame; 11. Mounting hole; 12. First positioning hole; 13. Second positioning hole; 2. Light source base; 201. First calibration hole; 202. Second calibration hole; 203. Third calibration hole; 204. First annular protrusion; 21. Optical inspection base; 211. Fourth calibration hole; 212. Fifth calibration hole; 213. Sixth calibration hole; 214. Second annular protrusion; 3. First tightening cap; 31. Second tightening cap; 4. First double-sided wire coil; 41. Second double-sided wire coil; 5. Light source PCB board; 51. Optical inspection PCB board; 6. Light source fixing tube; 61. Optical inspection fixing tube; 7. Light source light shielding tube; 71. Optical inspection light shielding tube; 8. Light source; 81. Optical inspection.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, provided that they are feasible for those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] This invention proposes a light source photodetector component for use in online water quality equipment.

[0030] In this embodiment, as Figures 1-6 The illustrated light source 8 and light detector 81 assembly for use in online water quality monitoring equipment includes a mounting frame 1, a light source 8, a light detector 81, a light source base 2, and a light detector base 21. The mounting frame 1 has a coaxial first positioning hole 12 and a second positioning hole 13 on its side wall. The light source base 2 is coaxially disposed within the first positioning hole 12, and the light detector base 21 is coaxially disposed within the second positioning hole 13. The light source 8 is vertically mounted on a light source PCB board 5, which is attached to the end face of the light source base 2, and the light source 8 is installed inside the light source base 2. The light detector 81 is vertically mounted on a light detector PCB board 51, which is attached to the end face of the light detector base 21, and the light detector 81 is disposed inside the light detector base 21.

[0031] Specifically, by vertically mounting the light source 8 on the light source PCB board 5 and the optical detector 81 on the optical detector PCB board 51, and by providing a first positioning hole 12 and a second positioning hole 13 on the side wall of the mounting frame 1, the installation process is simple. Since the light source 8 is perpendicular to the light source PCB board 5, it is only necessary to position the light source PCB board 5 on the end face of the light source base 2 and adjust it so that the light source 8 and the light source base 2 are coaxial. Similarly, by adjusting the position of the optical detector PCB board 51, the optical detector 81 is positioned on the axis of the optical detector base 21. Then, the positioned light source base 2 and optical detector base 21 are installed in the first positioning hole 12 and the second positioning hole 13, respectively, thus achieving a high degree of coaxiality in the installation of the light source 8 and the optical detector 81. This invention, by mounting the light source 8 and the optical detector 81 onto the light source PCB board 5 and the optical detector PCB board 51 respectively, changes the angle and position adjustment of the light source 8 and the optical detector 81 on the mounting frame 1. Instead, it only requires positioning the light source PCB board 5 on the light source base 2 and the optical detector 81 on the optical detector PCB board 51. This greatly reduces the positioning difficulty of the light source 8 and the optical detector 81, making the installation of the light source 8 and the optical detector 81 easier, achieving high coaxiality positioning, and reducing the influence of the installer's skill level on the installation of the light source 8 and the optical detector 81.

[0032] In this embodiment, the mounting frame 1 is integrally formed; the first positioning hole 12 and the second positioning hole 13 are drilled and formed in one step after the mounting frame 1 is clamped and fixed, thereby effectively ensuring the high coaxiality of the first positioning hole 12 and the second positioning hole 13.

[0033] Optionally, it also includes a light source base 2 and a light inspection base 21; the light source base 2 is detachably disposed in the first positioning hole 12, and the light source base 2 is provided with a coaxial first calibration hole 201, a second calibration hole 202 and a third calibration hole 203 in sequence. The light source 8 is located in the second calibration hole 202, and the light source PCB board 5 is installed in the third calibration hole 203, and the end face of the light source PCB board 5 abuts against the end face of the third calibration hole 203. The first calibration hole 201 is located inside the mounting frame 1.

[0034] Specifically, the detachable connection between the light source base 2 and the first positioning hole 12 is a threaded connection or a snap-fit ​​connection. The first calibration hole 201, the second calibration hole 202, and the third calibration hole 203 are three cylindrical holes of different diameters coaxially opened along the axial direction of the light source base 2; the third calibration hole 203 is located on the side of the light source base 2 away from the mounting frame 1, and the light source PCB board 5 is installed in the third calibration hole 203 by a threaded connection or a snap-fit ​​connection, and the side wall of the light source PCB board 5 near the light source 8 abuts against the end wall of the third calibration hole 203. The opening of the first calibration hole 201 faces the inside of the mounting frame 1 to realize light transmission.

[0035] In this embodiment, by designing the light source base 2 to be detachably mounted within the first positioning hole 12, the installation and adjustment of the light source 8 assembly are facilitated. When installing the light source 8 and the light source PCB board 5, the light source base 2 can be removed from the first positioning hole 12 first, and then the light source 8 and the light source PCB board 5 can be installed on the light source base 2 before the light source base 2 is installed back into the first positioning hole 12. By coaxially opening the first calibration hole 201, the second calibration hole 202, and the third calibration hole 203 at the center of the light source base 2, and by fitting the end face of the light source PCB board 5, which is perpendicular to the light source 8, with the axis of the third calibration hole 203 perpendicular to the end face, the installation angle of the light source PCB board 5 is determined, making the axis of the third calibration hole 203 perpendicular to the light source PCB board 5. By adjusting the position of the light source PCB board 5 on the end face of the third calibration hole 203, the light source 8 can be made coaxial with the second calibration hole 202.

[0036] More preferably, the light source PCB board 5 is set to be circular or square, the third calibration hole 203 is set to be a hole that corresponds to the shape of the light source PCB board 5 and has the same external size, and the light source 8 is set in the center of the light source PCB board 5. After the light source PCB board 5 is installed in the third calibration hole 203, the light source 8 can be coaxial with the second calibration hole 202 and the first calibration hole 201.

[0037] Optionally, the optical inspection base 21 is detachably installed in the second positioning hole 13. The optical inspection base 21 is provided with a fourth calibration hole 211, a fifth calibration hole 212 and a sixth calibration hole 213 in sequence. The optical inspection 81 is located in the fifth calibration hole 212, and the optical inspection PCB board 51 is installed in the sixth calibration hole 213. The fourth calibration hole 211 is located inside the mounting frame 1, and the first calibration hole 201 is coaxially aligned with the fourth calibration hole 211.

[0038] Specifically, the axis of the optical inspection base 21 coincides with the fourth calibration hole 211, the fifth calibration hole 212 and the sixth calibration hole 213. The function of the fourth calibration hole 211, the fifth calibration hole 212 and the sixth calibration hole 213 on the optical inspection base 21 is the same as the function of the first calibration hole 201, the second calibration hole 202 and the third calibration hole 203 on the light source base 2, and will not be elaborated here.

[0039] Optionally, a light source fixing tube 6 and a light source shielding tube 7 are provided between the light source 8 and the light source PCB board 5. The light source fixing tube 6 is coaxially arranged in the second calibration hole 202. The light source PCB board 5 is installed on one end face of the light source fixing tube 6, and the axis of the light source fixing tube 6 is perpendicular to the light source PCB board 5. The light source 8 is fixed on the light source fixing tube 6 through the light source shielding tube 7. A light inspection fixing tube 61 and a light inspection shielding tube 71 are provided between the light inspection 81 and the light inspection PCB board 51. The light inspection fixing tube 61 is coaxially arranged in the fifth calibration hole 212. The light inspection PCB board 51 is installed on one end face of the light inspection fixing tube 61, and the axis of the light inspection fixing tube 61 is perpendicular to the light inspection PCB board 51. The light inspection 81 is fixed on the light inspection fixing tube 61 through the light inspection shielding tube 71.

[0040] Specifically, the light source fixing tube 6 is used to connect the light source PCB board 5 and the light source 8, and the light source shielding tube 7 is used to surround the peripheral wall of the light source 8 to prevent the light beam emitted by the light source 8 from scattering to the surroundings. One end of the light source fixing tube 6 has a first threaded hole coaxial with the tube cavity. The diameter of the first threaded hole is larger than the inner diameter of the light source fixing tube 6, thus forming a stepped hole at one end of the light source fixing tube 6. The light source 8 is cylindrical, and a first annular protrusion 204 (not shown in the figure) is provided on the peripheral wall of the light source 8. The first annular protrusion 204 of the light source 8 abuts against the stepped surface formed by the first threaded hole and the inner diameter of the light source fixing tube 6. The light source shielding tube 7 has a first threaded portion, which is threadedly connected to the first threaded hole. During installation, the light source 8 is first placed in the first threaded hole of the light source 8, and then the light source shielding tube 7 is screwed in, so that the first threaded portion presses the first annular protrusion 204 of the light source 8 against the bottom wall of the first threaded hole.

[0041] In this embodiment, the connection line of the light source 8 is located at the end where the first annular protrusion 204 is located. The connection line of the light source 8 passes through the inner hole of the light source fixing tube 6 and is connected to the light source PCB board 5. The optical detector 81 is connected to the optical detector PCB board 51 in the same way.

[0042] Preferably, the light source PCB board 5 is a circular board, and the light source PCB board 5 and the light source fixing tube 6 are connected by snap-fit. At least two protrusions can be intermittently provided circumferentially on the end face of the light source fixing tube 6 away from the first threaded hole, and corresponding number and shape of snap-fit ​​holes are opened on the light source PCB board 5. By snapping the protrusions on the light source fixing tube 6 into the snap-fit ​​holes on the light source PCB board 5, the light source PCB board 5 is positioned and fixed.

[0043] Preferably, the optical inspection fixing tube 61 has a second threaded hole coaxial with the tube cavity. The diameter of the second threaded hole is larger than the inner diameter of the optical inspection fixing tube 61. The optical inspection shielding tube 71 is provided with a second threaded portion. The optical detector 81 is cylindrical, and a second annular protrusion 214 is provided on the peripheral wall of the optical detector 81. The second threaded portion is threadedly connected to the second threaded hole, and the second threaded portion presses the second annular protrusion 214 of the optical detector 81 against the bottom wall of the second threaded hole. The installation method of the optical detector 81 is the same as that of the light source 8, which will not be described in detail here.

[0044] In this embodiment, the light source 8 is specifically coaxially mounted inside the light source fixing tube 6, and the light source fixing tube 6 is perpendicularly mounted to the light source PCB board 5, thereby achieving a vertical positional relationship between the light source 8 and the light source PCB board 5. During installation, the light source 8 is now vertically mounted on the light source PCB board 5 through the light source fixing tube 6 and the light source shielding tube 7, thus forming a whole with the light source 8 and the light source PCB board 5. Simply aligning the end face of the light source PCB board 5 with the third calibration hole 203 is sufficient to maintain a high degree of coaxiality between the light source 8 and the second calibration hole 202. Similarly, the optical detector 81 adopts the same installation method to ensure the coaxiality between the optical detector 81 and the fifth calibration hole 212. The fifth calibration hole 212 is coaxially opened with the second calibration hole 202, thereby effectively ensuring a high degree of coaxiality between the light source 8 and the optical detector 81.

[0045] Preferably, the light source fixing tube 6 and the second calibration hole 202 are threadedly connected, thereby ensuring the coaxiality of the light source fixing tube 6 and the second calibration hole 202, and further ensuring the coaxiality of the light source 8 inside the light source fixing tube 6 and the second calibration hole.

[0046] Optionally, the outer peripheral wall of the light source base 2 is provided with a first limiting protrusion, and the mounting frame 1 is a square frame. The first limiting protrusion is in contact with the side wall of the mounting frame 1. The outer peripheral wall of the light inspection base 21 is provided with a second limiting protrusion, and the second limiting protrusion is in contact with the side wall of the mounting frame 1 away from the light source base 2.

[0047] Preferably, the light source base 2 is cylindrical, and the first limiting protrusion is an annular protrusion located on the outer periphery of the light source base 2. The first limiting protrusion limits the depth of the light source base 2 inside the mounting frame 1, preventing the light source base 2 from going too deep into the mounting frame 1 and affecting the fluid flow efficiency inside the mounting frame 1. Furthermore, by vertically penetrating the side wall of the mounting frame 1 through the first positioning hole 12, and with the side of the first limiting protrusion perpendicular to the axis of the light source base 2, the coaxiality of the light source base 2 and the first positioning hole 12 can be determined by observing the degree of contact between the first limiting protrusion and the side wall of the mounting frame 1 with the first positioning hole 12 during installation. This allows for more precise control of the coaxiality between the light source base 2 and the first positioning hole 12. The second limiting protrusion has the same function as the first limiting protrusion and will not be described further here.

[0048] More preferably, the first positioning hole 12 and the second positioning hole 13 are threaded holes, the light source base 2 and the first positioning hole 12 are threadedly connected, and the optical inspection base 21 and the second positioning hole 13 are also threadedly connected, so as to ensure the coaxiality of the light source base 2 and the optical inspection base 21.

[0049] Optionally, a first tightening cap 3 is installed on the side of the light source base 2 away from the light inspection base 21, and the light source 8 and the light source PCB board 5 are disposed in the cavity formed by the first tightening cap 3 and the light source base 2; a second tightening cap 31 is installed on the side of the light inspection base 21 away from the light source base 2, and the light inspection 81 and the light inspection PCB board 51 are disposed in the cavity formed by the second tightening cap 31 and the light inspection base 21.

[0050] Specifically, one end of the first tightening cap 3 is threaded to the outer peripheral wall of the light source base 2, and the first tightening cap 3 is located at the end of the light source base 2 away from the mounting frame 1; a first double-sided wire guard coil 4 is provided through the end wall of the other end of the first tightening cap 3, and the circuit of the light source PCB board 5 passes through the middle of the first double-sided wire guard coil 4. The first double-sided wire guard coil 4 is used to seal the gap between the circuit of the light source PCB board 5 and the end wall of the first tightening cap 3. The first tightening cap 3 and the first double-sided wire guard coil are used to isolate one side of the light source PCB board 5 from the external environment. The light source shielding tube 7 can also seal the gap between the light source 8 and the light source fixing tube 6, so that the fluid in the inner cavity of the mounting frame 1 cannot enter the light source fixing tube 6, thereby isolating the other side of the light source PCB board 5 from the outside world, preventing moisture in the external environment from contacting the light source PCB board 5, and effectively extending the service life of the light source PCB board 5.

[0051] Optionally, a second double-sided wire guard coil is provided through the end wall of the second tightening cap 31. The circuitry of the optical inspection PCB 51 passes through the middle of the second double-sided wire guard coil, which seals the gap between the circuitry of the optical inspection PCB 51 and the end wall of the second tightening cap 31. The second tightening cap 31, the second double-sided wire guard coil 41, and the optical inspection light shield tube 71 also seal both sides of the optical inspection PCB 51, isolating the optical inspection PCB 51 from the external environment, thereby effectively ensuring the service life of the optical inspection PCB 51.

[0052] In this embodiment, a mounting hole 11 is also provided on the side wall of the mounting frame 1. The mounting hole 11 penetrates both side walls of the mounting frame 1, and the axis of the mounting hole 11 is perpendicular to the axes of the first positioning hole 12 and the second positioning hole 13. The mounting hole 11 is used to install and fix the mounting frame 1 in the usage environment. In this embodiment, the fluid flow direction is perpendicular. Figure 3 The plane shown. Mounting hole 11, first positioning hole 12 and second positioning hole 13 surround the fluid flow direction.

[0053] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A light source photodetector assembly for use in online water quality equipment, characterized in that, include: Mounting frame (1), the side wall of the mounting frame (1) is provided with a first positioning hole (12) and a second positioning hole (13) on the same axis. A light source base (2) is provided in the first positioning hole (12) and a light inspection base (21) is provided in the second positioning hole (13) and a light inspection base (21) is provided in the second positioning hole (13). Light source (8), the light source (8) is vertically arranged on the light source PCB board (5), the light source PCB board (5) is attached to the end face of the light source base (2), and the light source (8) is installed in the light source base (2); Optical detector (81) is vertically mounted on optical detector PCB board (51). The optical detector PCB board (51) is attached to the end face of the optical detector base (21). The optical detector (81) is located inside the optical detector base (21).

2. The light source photodetector assembly for use in online water quality equipment as described in claim 1, characterized in that, The light source base (2) is detachably disposed in the first positioning hole (12). The light source base (2) is provided with a first calibration hole (201), a second calibration hole (202) and a third calibration hole (203) in sequence. The light source (8) is located in the second calibration hole (202). The light source PCB board (5) is installed in the third calibration hole (203), and the end face of the light source PCB board (5) abuts against the end face of the third calibration hole (203). The first calibration hole (201) is located inside the mounting frame (1).

3. The light source photodetector assembly for use in online water quality equipment as described in claim 2, characterized in that, The optical inspection base (21) is detachably installed in the second positioning hole (13). The optical inspection base (21) is provided with a fourth calibration hole (211), a fifth calibration hole (212) and a sixth calibration hole (213) in sequence. The optical detector (81) is located in the fifth calibration hole (212). The optical inspection PCB board (51) is installed in the sixth calibration hole (213). The fourth calibration hole (211) is located inside the mounting frame (1), and the first calibration hole (201) is coaxially aligned with the fourth calibration hole (211).

4. The light source optical detection component for use in online water quality equipment as described in claim 3, characterized in that, A light source fixing tube (6) and a light source shielding tube (7) are provided between the light source (8) and the light source PCB board (5). The light source fixing tube (6) is coaxially arranged in the second calibration hole (202). The light source PCB board (5) is installed on one end face of the light source fixing tube (6), and the axis of the light source fixing tube (6) is perpendicular to the light source PCB board (5). The light source (8) is fixed on the light source fixing tube (6) through the light source shielding tube (7). A light inspection fixing tube (61) and a light inspection shielding tube (71) are provided between the light inspection (81) and the light inspection PCB board (51). The light inspection fixing tube (61) is coaxially arranged in the fifth calibration hole (212). The light inspection PCB board (51) is installed on one end face of the light inspection fixing tube (61), and the axis of the light inspection fixing tube (61) is perpendicular to the light inspection PCB board (51). The light inspection (81) is fixed on the light inspection fixing tube (61) by the light inspection shielding tube (71).

5. The light source photodetector assembly for use in online water quality equipment as described in claim 4, characterized in that, The light source fixing tube (6) has a first threaded hole coaxial with the tube cavity. The diameter of the first threaded hole is larger than the inner diameter of the light source fixing tube (6). The light source shielding tube (7) is provided with a first threaded part. The light source (8) is cylindrical. A first annular protrusion is provided on the peripheral wall of the light source (8). The first threaded part is threadedly connected to the first threaded hole, and the first threaded part presses the first annular protrusion of the light source (8) against the bottom wall of the first threaded hole.

6. The light source photodetector assembly for use in online water quality equipment as described in claim 4, characterized in that, The optical inspection fixing tube (61) has a second threaded hole coaxial with the tube cavity. The diameter of the second threaded hole is larger than the inner diameter of the optical inspection fixing tube (61). The optical inspection shielding tube (71) is provided with a second threaded part. The optical detector (81) is cylindrical. A second annular protrusion is provided on the peripheral wall of the optical detector (81). The second threaded part is threadedly connected to the second threaded hole, and the second threaded part presses the second annular protrusion of the optical detector (81) against the bottom wall of the second threaded hole.

7. The light source photodetector assembly for use in online water quality equipment as described in claim 2, characterized in that, The outer peripheral wall of the light source base (2) is provided with a first limiting protrusion (204), the mounting frame (1) is a square frame, and the first limiting protrusion (204) is in contact with the side wall of the mounting frame (1); The outer peripheral wall of the optical inspection base (21) is provided with a second limiting protrusion (214), which is in contact with the side wall of the mounting frame (1) away from the light source base (2).

8. The light source photodetector assembly for use in online water quality equipment as described in claim 7, characterized in that, The light source base (2) is equipped with a first tightening cap (3) on the side away from the light detection base (21), and the light source (8) and the light source PCB board (5) are arranged in the cavity formed by the first tightening cap (3) and the light source base (2). The optical inspection base (21) is equipped with a second tightening cap (31) on the side away from the light source base (2), and the optical inspection (81) and the optical inspection PCB board (51) are arranged in the cavity formed by the second tightening cap (31) and the optical inspection base (21).

9. The light source photodetector assembly for use in online water quality equipment as described in claim 8, characterized in that, A first double-sided wire guard (4) is provided through the end wall of the first tightening cap (3). The circuit of the light source PCB board (5) passes through the middle of the first double-sided wire guard (4). The first double-sided wire guard (4) is used to seal the gap between the circuit of the light source PCB board (5) and the end wall of the first tightening cap (3).

10. The light source photodetector assembly for use in online water quality equipment as described in claim 8, characterized in that, A second double-sided wire guard (41) is provided through the end wall of the second tightening cap (31). The lines of the optical inspection PCB board (51) pass through the middle of the second double-sided wire guard (41). The second double-sided wire guard (41) is used to seal the gap between the lines of the optical inspection PCB board (51) and the end wall of the second tightening cap (31).

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