Turbidity meter

Abstract

The turbidity meter comprises an operation control panel, a top frame, a light emitting unit, an upper connecting frame, a main frame, a light receiving unit and a sample tube, the operation control panel is fixed on the top frame; the light emitting unit is coupled between the top frame and the upper connecting frame; the light emitting unit comprises a light emitter support, an upper circuit board and a light emitter assembly. Four light-emitting elements arranged in the light emitter assembly are fixed on the lower end surface of the circuit board; the upper circuit board is locked on the illuminator bracket; the upper connecting frame is sequentially connected with the main frame and the light receiving unit in a locking manner; a detection bin is arranged on the main frame, and lens groups are arranged at the upper end and the lower end of the central axis of the detection bin; the sample tube is arranged in the detection bin; a photosensitive receiving tube is arranged in the light receiving unit; a light path of the light-emitting element can be received by the photosensitive receiving tube after sequentially passing through the light path through hole, the upper lens group, the sample tube and the lower lens group. The equipment is convenient to carry and can be used for quickly and preliminarily screening and detecting daily COD (Chemical Oxygen Demand) and turbidity of a water body.

Description

Technical Field

[0001] The utility model belongs to the technical field of water environment detection, and specifically relates to a turbidity meter. Background Art

[0002] With the improvement of people's living standards and the increasing requirements for the quality of drinking water, regular inspections of drinking water sources and water supply systems will be carried out. In the existing technology, water quality testing uses chemical reagents to test water samples. The water quality testing devices are large in size and not easy to carry. Most of them are fixedly installed in the laboratory and are inconvenient to move. In addition, the testing cycle is long, the operation is frequent and complicated, and it cannot reflect the water quality status in real time and quickly, and cannot meet the daily rapid water quality testing needs. Summary of the invention

[0003] The present invention aims to solve the above problems and provides a turbidity meter.

[0004] A turbidity meter, comprising: an operation control panel 1, a top frame 2, a light emitting unit 3, an upper connecting frame 4, a main frame 5, a light receiving unit 6, and a sample tube 8; the operation control panel 1 is fixed on the top frame 2; the light emitting unit 3 is axially connected between the top frame 2 and the upper connecting frame 4; the light emitting unit 3 comprises: a light emitter bracket 31, an upper circuit board 32, and a light emitter assembly 33; the light emitter assembly 33 comprises four light emitting elements, and the four light emitting elements are fixed on the lower end surface of the circuit board 32; the upper circuit board 3 2 is locked on the light-emitting device bracket 31; the upper connecting frame 4 is locked and connected with the main frame 5 and the light receiving unit 6 in sequence; the main frame 5 is provided with a detection chamber 52, and the upper and lower ends of the central axis of the detection chamber 52 are provided with an upper lens group 521 and a lower lens group 522; the sample tube 8 is arranged in the detection chamber 52; the light receiving unit 6 is provided with a photosensitive receiving tube 63; the light path of the light-emitting element can pass through the light path through hole 42, the upper lens group 521, the sample tube 8, and the lower lens group 522 in sequence, and then be received by the photosensitive receiving tube 63.

[0005] The lower end surface of the top frame 2 is provided with two electrode sheets 24; the upper circuit board 32 is provided with four groups of electrode contacts 322; the four groups of electrode contacts 322 are arranged in a circular array on the upper end surface of the upper circuit board 32; the four groups of electrode contacts 322 are respectively the positive and negative power supply contact points of the four light-emitting elements; the electrode contacts 322 are provided with spherical grooves; screwing the light-emitting device bracket 31 can switch the four groups of electrode contacts 322 to be electrically conductive with the electrode sheets 24 respectively.

[0006] The light emitter assembly 33 includes four light emitting elements, including two ultraviolet laser emitters, one infrared laser emitter and one LED emitter.

[0007] The light color temperature of the LED light emitter is 6000K.

[0008] The light receiving unit 6 includes: a base frame 61, a main control board 62, and a photosensitive receiving tube 63; the main control board 62 can be fixed to the base frame 61 by screws; the photosensitive receiving tube 63 is fixed to one side of the main control board 62 by electronic welding; the operation control panel 1 and the upper circuit board 32 are electrically connected to the main control board 62.

[0009] The sample tube 8 can be embedded in the detection chamber 52; light-transmitting windows 81 are provided at the upper and lower ends of the sample tube 8, and the central axis of the light-transmitting windows 81 at both ends coincides with the axis of the sample tube 8 body; a sample solution injection port 82 is provided on one side of the sample tube 8; a silicone plugging head 83 is also provided at the sample solution injection port 82.

[0010] The detection chamber 52 is provided with a detection chamber cover 523, and the detection chamber cover 523 is provided with a chamber cover through hole 5231; the sample solution injection port 82 can be sleeved in the chamber cover through hole 5231; the detection chamber cover 523 and the silicone plugging head 83 are both made of opaque materials.

[0011] The technical solution provides a portable turbidity meter, which includes: an operation control panel 1, a top frame 2, a light emitting unit 3, an upper connecting frame 4, a main frame 5, a light receiving unit 6, and a sample tube 8; the operation control panel 1 is fixed on the top frame 2; the light emitting unit 3 is axially connected between the top frame 2 and the upper connecting frame 4; the light emitting unit 3 includes: a light emitter bracket 31, an upper circuit board 32, and a light emitter assembly 33; the light emitter assembly 33 includes 4 light emitting elements, and the 4 light emitting elements are fixed on the lower end surface of the circuit board 32 The upper circuit board 32 is locked on the light-emitting device bracket 31; the upper connecting frame 4 is locked and connected with the main frame 5 and the light receiving unit 6 in sequence; the main frame 5 is provided with a detection chamber 52, and the upper and lower ends of the central axis of the detection chamber 52 are provided with an upper lens group 521 and a lower lens group 522; the sample tube 8 is provided in the detection chamber 52; the light receiving unit 6 is provided with a photosensitive receiving tube 63; the light path of the light-emitting element can pass through the light path through hole 42, the upper lens group 521, the sample tube 8, and the lower lens group 522 in sequence, and then be received by the photosensitive receiving tube 63. This equipment can perform daily rapid preliminary screening tests on COD and turbidity of water bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an overall schematic diagram of a turbidity meter of the utility model;

[0013] Figure 2 This is a schematic diagram of a half-section structure of a main frame of a turbidity meter of the utility model;

[0014] Figure 3 This is a schematic diagram of the mounting structure of a turbidity meter of the utility model;

[0015] Figure 4 This is a schematic diagram of the lower frame structure of a turbidity meter of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of a light emitting unit of a turbidity meter of the utility model;

[0017] Figure 6 This is a schematic diagram of the structure of a sample bottle of a turbidity meter of the utility model;

[0018] In the figure: 1. operation control panel, 11. switch key, 12. display screen, 2. top frame, 21. groove on top frame, 22. groove on bottom frame, 23. through hole for connecting top frame, 24. electrode sheet, 241. spherical flange, 3. light emitting unit, 31. light emitter bracket, 311. light emitting circuit positioning pin, 312. light emitting circuit board locking threaded hole, 32. upper circuit board, 321. positioning notch of upper circuit board, 322. electrode contact, 323. circuit board through hole, 33. light emitter assembly, 4. Upper connecting frame, 5, main frame, 51, battery compartment, 511, battery positive contact, 512, battery negative contact, 513, battery cover, 52, detection compartment, 521, upper lens group, 522, lower lens group, 523, detection compartment cover 5231, compartment cover through hole, 6, light receiving unit, 61, bottom frame, 611, supporting flange, 62, main control board, 621, positioning groove, 63, photosensitive receiving tube, 8, sample tube 81, light-transmitting window, 82, sample solution injection port, 83, silicone sealing head. DETAILED DESCRIPTION

[0019] The technical scheme will be further described clearly and completely below in conjunction with the accompanying drawings of the technical scheme. The described embodiments are only a part of the technical scheme, not all of the embodiments. Based on the technical scheme, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Example

[0020] See also Figures 1 to 6 As shown, a turbidity meter comprises: an operation control panel 1, a top frame 2, a light emitting unit 3, an upper connecting frame 4, a main frame 5, a light receiving unit 6, and a sample tube 8;

[0021] The operation control panel 1 is provided with a switch key 11 and a display screen 12; the device of the present technical solution is operated by controlling the operation control panel 1.

[0022] The top frame 2 is provided with a top frame upper groove 21, a top frame lower groove 22, and a top frame connecting through hole 23; the top frame upper groove 21 and the top frame lower groove 22 are respectively arranged on the upper and lower end surfaces of the top frame 2; the operation control panel 1 is arranged at the top frame upper groove 21; the top frame connecting through hole 23 is arranged at the central axis of the top frame 2;

[0023] The lower end surface of the top frame 2 is provided with two electrode sheets 24 ; the two electrode sheets 24 are respectively locked and fixed to the lower end surface of the top frame 2 by screws; the front ends of the two electrode sheets 24 are both provided with spherical flanges 241 .

[0024] The light emitting unit 3 comprises: a light emitter bracket 31, an upper circuit board 32, and a light emitter assembly 33;

[0025] The light emitter bracket 31 is an annular bracket; the outer end surface of the light emitter bracket 31 is provided with a mesh or a flange to increase friction; the inner annular edge of the light emitter bracket 31 is provided with a light emitting circuit positioning pin 311 and a light emitting circuit board locking threaded hole 312;

[0026] The upper circuit board 32 has an upper circuit board positioning notch 321 at its edge; the upper circuit board positioning notch 321 corresponds to the position of the light-emitting circuit positioning pin 311; the upper circuit board 32 is fixed to the light-emitting device bracket 31 by screws.

[0027] The light emitter assembly 33 includes four light-emitting elements, including two ultraviolet laser emitters, one infrared laser emitter and one ordinary white LED emitter; the light color temperature of the ordinary white LED emitter is 6000K; the four light-emitting elements and the electronic components that assist the normal operation of the light emitter assembly 33 are fixed on the lower end surface of the circuit board 32 by electronic welding; four groups of electrode contacts 322 are provided on the upper circuit board 32; the four groups of electrode contacts 322 are respectively the positive and negative power supply contact points of the four light-emitting elements; the four groups of electrode contacts 322 are arranged in a circular array on the upper end surface of the upper circuit board 32; the electrode contacts 322 are provided with spherical grooves; screwing the light emitter bracket 31 can switch the four groups of electrode contacts 322 and the electrode sheet 24 to be electrically conductive; the electrode contacts 322 are in close contact with the electrode sheet 24.

[0028] A circuit board through hole 323 is provided in the middle of the upper circuit board 32;

[0029] The wavelengths of the two ultraviolet laser emitter light sources are 255nm and 280nm respectively.

[0030] The upper connecting frame 4 is an axial rotating component, and a connecting screw 41 is provided at the center of the upper connecting frame 4, and the connecting screw 41 is provided with an optical path through hole 42; the connecting screw 41 passes through the circuit board through hole 323 and the top frame connecting through hole 23, and the top of the connecting screw 41 is locked with a top frame locking nut 25; that is, the upper connecting frame 4, the light emitting unit 3 and the top frame 2 are connected in sequence; the light emitting unit 3 can rotate between the upper connecting frame 4 and the top frame 2; the upper connecting frame 4 and the top frame 2 are locked and fixedly connected by the top frame locking nut 25.

[0031] The upper end of the main frame 5 is locked and connected to the lower end of the upper connecting frame 4;

[0032] The main frame 5 is provided with a battery compartment 51 and a detection compartment 52; a battery positive contact 511 is provided at the upper end of the battery compartment 51, a battery negative contact 512 is provided at the lower end of the battery compartment 51, and a battery cover 513 is provided on one side of the battery compartment 51; the battery cover 513 is snap-connected to the shell of the battery compartment 51; an upper lens group 521 and a lower lens group 522 are provided at the upper and lower ends of the central axis of the detection compartment 52; a detection compartment cover 523 is provided on one side of the detection compartment 52; the detection compartment cover 523 is magnetically connected to the shell of the detection compartment 52.

[0033] The light receiving unit 6 comprises: a base frame 61, a main control board 62, and a photosensitive receiving tube 63;

[0034] The bottom frame 61 is locked and connected to the lower end of the main frame 5;

[0035] The base frame 61 is provided with a supporting flange 611; the edge of the main control board 62 is provided with a positioning groove 621; the main control board 62 can be fixed to the base frame 61 by screws; the positioning groove 621 and the supporting flange 611 are located in a position corresponding to each other; the photosensitive receiving tube 63 is fixed to one side of the main control board 62 by electronic welding;

[0036] The operation control panel 1, the upper circuit board 32 and the main control board 62 are electrically connected via cables.

[0037] The sample tube 8 can be embedded in the detection chamber 52; light-transmitting windows 81 are provided at the upper and lower ends of the sample tube 8, and the central axis of the light-transmitting windows 81 at both ends coincides with the axis of the sample tube 8 body; a sample solution injection port 82 is provided on one side of the sample tube 8; a silicone plug 83 is also provided at the sample solution injection port 82;

[0038] The detection chamber 52 is provided with a detection chamber cover 523, and the detection chamber cover 523 and the silicone plugging head 83 are both made of opaque materials;

[0039] The detection chamber cover 523 is provided with a chamber cover through hole 5231 ; the sample solution injection port 82 can be sleeved in the chamber cover through hole 5231 .

[0040] The optical path through hole 42, the upper lens group 521, the sample tube 8, the lower lens group 522 and the axial center line of the photosensitive receiving tube 63 coincide with each other; the light emitted by two ultraviolet laser emitters, one infrared laser emitter or one ordinary white LED light emitter can pass through the optical path through hole 42, the upper lens group 521, the sample tube 8, the lower lens group 522 in sequence, and then be received by the photosensitive receiving tube 63.

[0041] The upper lens group 521 and the lower lens group 522 are collimating lenses, and the upper lens group 521 and the lower lens group 522 suppress the escape of light.

[0042] Two 12V batteries can be installed in the battery compartment 51; the two 12V batteries form a 24V DC power supply.

[0043] This technical solution is based on the COD detection principle. The ultraviolet light source passes through the liquid to be tested through the collimating lens and finally irradiates the receiving photosensitive receiving tube 63. The absorbance is calculated by the energy of the photosensitive receiving tube 63, thereby calculating the COD concentration.

Claims

1. A turbidity meter, comprising: An operation control panel (1), a top frame (2), a light emitting unit (3), an upper connecting frame (4), a main frame (5), a light receiving unit (6), and a sample tube (8); characterized in that: the operation control panel (1) is fixed on the top frame (2); the light emitting unit (3) is axially connected between the top frame (2) and the upper connecting frame (4); the light emitting unit (3) comprises: a light emitter bracket (31), an upper circuit board (32), and a light emitter assembly (33); the light emitter assembly (33) comprises four light emitting elements, and the four light emitting elements are fixed on the lower end surface of the circuit board (32); the upper circuit board (32) is locked on the light emitter bracket (31); The upper connecting frame (4) is sequentially locked and connected to the main frame (5) and the light receiving unit (6); the main frame (5) is provided with a battery compartment (51) and a detection compartment (52); the upper and lower ends of the central axis of the detection compartment (52) are provided with an upper lens group (521) and a lower lens group (522); the sample tube (8) is arranged in the detection compartment (52); the light receiving unit (6) is provided with a photosensitive receiving tube (63); the upper connecting frame (4) is provided with a light path through hole (42); the light path of the light emitting element can sequentially pass through the light path through hole (42), the upper lens group (521), the sample tube (8), and the lower lens group (522) and then be received by the photosensitive receiving tube (63).

2. A turbidity meter according to claim 1, characterized in that: The lower end surface of the top frame (2) is provided with two electrode sheets (24); the upper circuit board (32) is provided with four groups of electrode contacts (322); the four groups of electrode contacts (322) are arranged in a ring array on the upper end surface of the upper circuit board (32); the four groups of electrode contacts (322) are respectively positive and negative power supply contact points of four light-emitting elements; the electrode contacts (322) are provided with spherical grooves; and the four groups of electrode contacts (322) can be switched to be electrically connected to the electrode sheets (24) by twisting the light-emitting device bracket (31).

3. A turbidity meter according to claim 2, characterized in that: The light emitter assembly (33) comprises four light-emitting elements, including two ultraviolet laser emitters, one infrared laser emitter and one LED emitter.

4. A turbidity meter according to claim 3, characterized in that: The light color temperature of the LED light emitter is 6000K.

5. A turbidity meter according to claim 4, characterized in that: The light receiving unit (6) comprises: a base frame (61), a main control board (62), and a photosensitive receiving tube (63); the main control board (62) can be fixed to the base frame (61) by screws; the photosensitive receiving tube (63) is fixed to one side of the main control board (62) by electronic welding; and the operation control panel (1) and the upper circuit board (32) are electrically connected to the main control board (62).

6. A turbidity meter according to claim 5, characterized in that: The sample tube (8) can be embedded in the detection chamber (52); light-transmitting windows (81) are provided at the upper and lower ends of the sample tube (8); the central axes of the light-transmitting windows (81) at both ends coincide with the axis of the sample tube (8); a sample solution injection port (82) is provided on one side of the sample tube (8); and a silicone plug (83) is also provided at the sample solution injection port (82).

7. A turbidity meter according to claim 6, characterized in that: The detection chamber (52) is provided with a detection chamber cover (523), and the detection chamber cover (523) is provided with a chamber cover through hole (5231); the sample solution injection port (82) can be sleeved in the chamber cover through hole (5231); the detection chamber cover (523) and the silicone plugging head (83) are both made of opaque materials.

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