CN214668551U

CN214668551U - Light source processing device for online detection of total nitrogen

Info

Publication number: CN214668551U
Application number: CN202120556167.1U
Authority: CN
Inventors: 郝庆玉; 张红艳; 刘超; 黄继彬; 孔祥; 徐成业
Original assignee: Nanjing Ruijin Fluid Control Technology Co ltd
Current assignee: Nanjing Ruijin Fluid Control Technology Co ltd
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2021-11-09
Anticipated expiration: 2031-03-18

Abstract

The utility model discloses a light source processing apparatus of total nitrogen of on-line measuring, including the luminous light source that is used for that sets gradually, the pipe is cleared up to the reagent that is used for water quality to clear up, is used for receiving to pass the reagent and clears up the photosensitive element of pipe light beam and detection light intensity, and is used for carrying out the beam splitting subassembly of beam splitting and filtering before light arrives photosensitive element, the beam splitting subassembly includes light filter and the drive arrangement that a plurality of luminosities are different, and light source, filter and photosensitive element are located same light path, and the beam splitting subassembly is equipped with the rotatory piece that is used for fixed light filter, and a plurality of light filters are equidistant to be set up on rotatory piece, and rotatory piece below sets up the photoelectric switch who is used for detecting the light filter position, and the photoelectric switch is connected with the drive arrangement electricity; the utility model discloses a light filter is as the means of the single light of acquireing different wave bands, and is with low costs, and simple structure reaches the detection effect of spectrum appearance equally, need not to use optic fibre to carry out the conduction of light simultaneously, effectively avoids optic fibre to easily break, has the problem of light loss.

Description

Light source processing device for online detection of total nitrogen

Technical Field

The utility model relates to a quality of water on-line measuring technical field, concretely relates to light source processing apparatus of total nitrogen of on-line measuring.

Background

At present, in the environment-friendly online monitoring industry, the monitoring of total nitrogen is generally monitored by using a national standard method, namely an alkaline potassium persulfate digestion ultraviolet spectrophotometry, wherein two characteristic wavelengths are required to be used: 220nm and 275nm, most instruments on the market adopt a deuterium lamp or a xenon lamp to provide 200-400nm composite light, absorption of the solution at the positions of 220nm and 275nm is received in a spectrometer or a device similar to the spectrometer, and then the total nitrogen concentration is calculated by utilizing the Lambert beer law.

Although the light intensity at 220nm and 275nm can be obtained by using the spectrometer, the spectrometer is expensive and high in detection cost, and meanwhile, when the spectrometer is used for detection, an optical fiber capable of conducting ultraviolet light is used, so that the detection cost is further increased, the optical fiber is easy to break, the conduction of light is weakened, and the detection result is influenced.

SUMMERY OF THE UTILITY MODEL

The technical purpose is as follows: use the spectrum appearance to detect to current total nitrogen detection device, cause and detect with high costs, optic fibre is easily broken and is influenced testing result etc. not enough, the utility model discloses a can use the light filter as the means that the single wavelength acquireed, need not to use optic fibre to conduct and spectrum appearance detection, can save the light source processing apparatus of the total nitrogen of on-line measuring that detects the cost greatly.

The technical scheme is as follows: in order to achieve the technical purpose, the utility model adopts the following technical scheme:

the utility model provides a light source processing apparatus of total nitrogen of on-line measuring, is used for luminous light source including what set gradually, and the pipe is cleared up to the reagent for water quality is cleared up, is used for receiving to pass the reagent and clears up the photosensitive element of pipe light beam and detection light intensity to and be used for carrying out the beam splitting subassembly that spectral filtering obtained specific wavelength before light arrives photosensitive element, the beam splitting subassembly includes light filter and the drive arrangement that a plurality of luminousness are different, and light source, filter and photosensitive element are located same light path.

Preferably, the utility model discloses a beam split subassembly is located reagent and clears up between pipe and the light sensitive element, and beam split subassembly is equipped with the rotatory piece that is used for fixed light filter, and the equidistant setting of a plurality of light filters is on rotatory piece, and rotatory piece center is connected with drive arrangement's transmission end.

Preferably, the utility model discloses a drive arrangement adopts step motor, and the axis of rotation of step motor transmission end is parallel with the luminous direction of light source.

Preferably, the utility model discloses a rotatory piece sets up the light filtering locating hole that is used for confirming the light filter position, and every light filter corresponds a light filtering locating hole to set up the original point locating hole at rotatory initial position lower extreme of piece; a photoelectric switch is arranged below the rotating block and electrically connected with a driving device.

Preferably, the utility model discloses a light source processing apparatus still is equipped with the casing that is used for fixed beam split subassembly, and beam split subassembly, photoelectric switch and light sensitive element all set up inside the casing.

Preferably, the light sensor of the present invention employs a photocell, the photocell absorbs light in a wavelength range of 200nm to 1100nm, the photocell is fixed in the casing, and a gasket is disposed between the circumference of the photocell and the casing.

Preferably, the utility model discloses a quantity of filter is 3, and the luminousness of light filter is 200nm, 275nm and 700nm respectively.

Preferably, the utility model discloses a light source adopts the xenon lamp light source of scintillation, and luminous wavelength range is 185nm ~2000 nm.

Preferably, the utility model discloses a pipe setting is cleared up to reagent clears up in clearing up the frame, clears up the frame both sides and sets up and be used for non-light tight unthreaded hole, and light source and light splitting subassembly are located respectively and clear up the both sides of frame, and are corresponding with the position of unthreaded hole.

Has the advantages that: the utility model provides a light source processing apparatus of total nitrogen of on-line measuring has following beneficial effect:

1. the utility model discloses a light filter of a plurality of specific luminousness filters, acquires the single wavelength light beam, compares in using the spectrum appearance to detect compound light, greatly sparingly detects the cost.

2. The utility model discloses practical filter plate filters, and photocell detection light intensity need not to use optic fibre to carry out ultraviolet ray conduction, and the light energy loss is little, is difficult for receiving the influence.

3. The utility model discloses set up the casing and carry out the fixed of beam split subassembly, clear up the pond setting and clearing up the frame in, airtight design can not receive external light to influence, promotes and detects the precision.

4. The utility model discloses set up the light filtering locating hole that corresponds with the light filter on the rotatory piece, through the position of photoelectric switch detection light filtering locating hole, control drive arrangement drives rotatory piece and rotates, and the light beam that the adjustment light filter carried out specific wavelength filters, can carry out the light filter switching of different luminosities automatically, automatic monitoring.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a view of the structure of the present invention;

FIG. 2 is a diagram of the rotary block of the present invention;

FIG. 3 is a comparison graph of the detection results of water samples using the present invention;

the device comprises a light source 1, a reagent digestion tube 2, a photosensitive element 3, a light filter 4, a driving device 5, a rotating block 6, a light filtering positioning hole 7, an origin positioning hole 8, a photoelectric switch 9, a shell 10, a gasket 11, a digestion frame 12 and a light hole 13.

Detailed Description

The present invention will be more clearly and completely described below by way of a preferred embodiment in conjunction with the accompanying drawings, which are not intended to limit the scope of the invention as described herein.

As shown in fig. 1 is the utility model discloses a light source processing apparatus of total nitrogen of on-line measuring, including the luminous light source 1 that is used for that sets gradually for water quality is cleared up the reagent and is cleared up pipe 2, is used for receiving to pass reagent and clears up 2 light beams and detect light intensity's photosensitive element 3, and is used for carrying out the beam split subassembly that beam split was filtered before light arrives photosensitive element and is obtained specific wavelength, the beam split subassembly includes light filter 4 and the drive arrangement 5 that a plurality of luminousness are different, and light source 1, light filter 4 and photosensitive element 3 are located same light path.

The utility model discloses a pipe 2 setting is cleared up to reagent is clearing up in clearing up frame 12, and the both sides of clearing up frame 12 set up unthreaded hole 13, and light source 1 and light splitting component are located respectively and clear up the both sides of frame 12, correspond with unthreaded hole 13's position, and light source 1 adopts the xenon lamp light source of scintillation, and luminous wavelength range is 185nm ~2000 nm.

The utility model discloses a beam split subassembly is located that the reagent is cleared up between pipe 2 and the light sensitive element 3, and beam split subassembly and light sensitive element 3 all set up in the casing, light sensitive element 3 adopts the photocell, and the photocell absorbs the light wavelength range and is 200nm-1100nm, and the photocell is fixed in casing 7, sets up packing ring 11 between photocell circumference and the casing, and beam split subassembly is equipped with the rotatory piece 6 that is used for fixed optical filter 4, and a plurality of optical filters 4 equidistant setting is on rotatory piece 6, and rotatory 6 centers of piece are connected with drive arrangement 5's transmission end, and drive arrangement 5 adopts step motor, and the axis of rotation of step motor transmission end is parallel with light source 1's luminous direction.

As shown in fig. 2, the utility model discloses a quantity of filter 4 is 3, and the luminousness of light filter 4 is 200nm, 275nm and 700nm respectively along anticlockwise in fig. 2, the utility model discloses a set up the light filtering locating hole 7 that is used for confirming the light filter position on the rotatory piece 6, every light filter 4 corresponds a light filtering locating hole 7, and the contained angle between adjacent light filtering locating hole 7 and the rotatory piece 6 center equals with the contained angle between the light filter 4 that corresponds, drives the rotation of rotatory piece 6 through drive arrangement 5 for the light filter 4 that uses is different, just can obtain the light of different wavelengths; an original point positioning hole 8 is arranged at the lower end of the initial position of the rotation block 6; a photoelectric switch 9 is arranged below the rotating block 6, the photoelectric switch 9 is used for detecting the positions of the original point positioning hole 8 and the filtering positioning hole 7, and the photoelectric switch 9 is electrically connected with the driving device 5.

The utility model provides a light source processing apparatus for on-line measuring total nitrogen when using, the light that light source 1 sent can arrive rotatory piece 6 after clearing up pipe 9 through the reagent, during initial position, original point locating hole 8 is located the below of rotatory piece 6, when starting drive arrangement 5 and driving rotatory piece 6 clockwise rotation, the light filter also follows and rotates, when first light filtering locating hole 7 rotated to the position of photoelectric switch 9, the filter center of luminousness 220nm and photosensitive element 3 were on the same horizontal line, guarantee that photosensitive element 3 can all absorb the light that passes through the light filter, drive arrangement 5 continues to rotate, according to same principle, luminousness 220nm, the filter with the wavelength of 700nm is sequentially arranged on the same horizontal line with the photosensitive element 3 at the center, the light intensity detection of the light with the corresponding wavelength is carried out, and the total nitrogen analysis of the water quality is carried out according to the photoelectric conversion absorbed by the photosensitive element 3.

As shown in fig. 3, for using the utility model discloses to the testing result of standard water sample and actual water sample to and use spectrum appearance, national standard method to carry out the result contrast picture that detects, can see out from the picture, adopt the utility model discloses a data that the online instrument recorded is close with the online equipment that adopts the spectrum appearance and the data that national standard method surveyed, shows the utility model discloses can replace spectrum appearance device, greatly reduced the cost.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A light source processing device for detecting total nitrogen on line is characterized in that: including the luminous light source (1) that is used for that sets gradually, a pipe (2) is cleared up to reagent for water quality is cleared up, is used for receiving to pass reagent and clears up photosensitive element (3) of pipe (2) light beam and detection light intensity to and be used for carrying out the beam splitting before light arrives photosensitive element and filter the beam splitting subassembly that obtains specific wavelength, the beam splitting subassembly includes filter (4) and drive arrangement (5) that a plurality of luminosities are different, and light source (1), filter (4) and photosensitive element (3) are located same light path.

2. The light source processing device for on-line detection of total nitrogen according to claim 1, wherein: the light splitting assembly is located between the reagent digestion tube (2) and the photosensitive element (3), the light splitting assembly is provided with a rotating block (6) used for fixing the optical filters (4), the optical filters (4) are arranged on the rotating block (6) at equal intervals, and the center of the rotating block (6) is connected with a transmission end of the driving device (5).

3. The light source processing device for on-line detection of total nitrogen according to claim 2, characterized in that: the driving device (5) adopts a stepping motor, and the rotating axis of the transmission end of the stepping motor is parallel to the light emitting direction of the light source (1).

4. The light source processing device for on-line detection of total nitrogen according to claim 2, characterized in that: the rotary block (6) is provided with a light filtering positioning hole (7) for confirming the position of the light filter, each light filter (4) corresponds to one light filtering positioning hole (7), and an original point positioning hole (8) is arranged at the lower end of the initial position of the rotation of the rotary block (6); a photoelectric switch (9) is arranged below the rotating block (6), and the photoelectric switch (9) is electrically connected with the driving device (5).

5. The light source processing device for on-line detection of total nitrogen according to claim 4, wherein: the light source processing device is also provided with a shell (10) used for fixing the light splitting component, and the light splitting component, the photoelectric switch (9) and the photosensitive element (3) are all arranged inside the shell (10).

6. The light source processing device for on-line detection of total nitrogen according to claim 5, wherein: the light-sensitive element (3) adopts a photocell, the light-absorbing wavelength range of the photocell is 200nm-1100nm, the photocell is fixed in the shell (10), and a gasket (11) is arranged between the periphery of the photocell and the shell (10).

7. The light source processing device for on-line detection of total nitrogen according to claim 1, wherein: the number of the optical filters (4) is 3, and the light transmittance of the optical filters (4) is 200nm, 275nm and 700nm respectively.

8. The light source processing device for on-line detection of total nitrogen according to claim 1, wherein: the light source (1) adopts a flashing xenon lamp light source, and the light emitting wavelength range is 185-2000 nm.

9. The light source processing device for on-line detection of total nitrogen according to claim 1, wherein: the reagent digestion tube (2) is arranged in the digestion frame (12), light holes (13) used for light transmission are formed in two sides of the digestion frame (12), and the light source (1) and the light splitting component are respectively located on two sides of the digestion frame (12) and correspond to the light holes (13).