CN113720675A - Digestion device for total nitrogen and total phosphorus analysis pretreatment in environmental monitoring - Google Patents
Digestion device for total nitrogen and total phosphorus analysis pretreatment in environmental monitoring Download PDFInfo
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- CN113720675A CN113720675A CN202111016501.5A CN202111016501A CN113720675A CN 113720675 A CN113720675 A CN 113720675A CN 202111016501 A CN202111016501 A CN 202111016501A CN 113720675 A CN113720675 A CN 113720675A
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- side wall
- box body
- environmental monitoring
- total nitrogen
- total phosphorus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
- G01N2001/386—Other diluting or mixing processes
Abstract
The invention discloses a digestion device for analyzing and pretreating total nitrogen and total phosphorus in environmental monitoring. The rotary shaft is arranged in the working cavity, the rotary shaft is arranged along the front-back direction, the rear end of the rotary shaft is rotatably connected with the rear side wall in the box body, and the front end of the rotary shaft is rotatably connected with the driving mechanism after penetrating through the front side wall of the box body. The fixed coupling has the feeder pillar in the pivot, and the fixed coupling has the annular slab on the feeder pillar, evenly is provided with multiunit rabbling mechanism along circumference on the annular slab. The device can stir the mixture fully to the mixed liquid of work intracavity, is favorable to improving the total nitrogen of aquatic and the efficiency of digesting of total phosphorus.
Description
Technical Field
The invention relates to the technical field of environment treatment accessories, in particular to a digestion device for analyzing and pretreating total nitrogen and total phosphorus in environment monitoring.
Background
As is well known, a digestion device used for the analysis and pretreatment of total nitrogen and total phosphorus in environmental monitoring is an auxiliary device for digesting the total nitrogen and the total phosphorus in water by using alkaline potassium persulfate in the process of monitoring water quality, and is widely used in the field of environmental treatment.
Present environmental monitoring is used for total nitrogen, total phosphorus analysis pretreatment digestion device includes the box, the inside working chamber that is provided with of box, the box top is provided with the water inlet, water inlet and working chamber intercommunication, and be provided with the case lid in water inlet department, the inside arc that is provided with of box, arc bottom left half regional and right half regional left heater and right heater of being provided with respectively, arc bottom central zone intercommunication is provided with the drain pipe, the drain pipe output passes box right side wall, be provided with the control valve on the drain pipe, be provided with the (mixing) shaft in the working chamber, be provided with the stirring leaf on the (mixing) shaft. When present environmental monitoring was used for total nitrogen, total phosphorus analysis pretreatment digestion device to use, water entered into to the working chamber from the water inlet to pour into to the working chamber basicity potassium persulfate according to certain proportion, drive the stirring leaf through the (mixing) shaft and rotate, stir the mixture through stirring leaf to the water and basicity potassium persulfate of working chamber in, heat through the mixed liquid of left heater and right heater in to the working chamber simultaneously and clear up. However, the existing environmental monitoring pretreatment digestion device for total nitrogen and total phosphorus analysis is insufficient in stirring and mixing of mixed liquid in a working cavity, so that the total nitrogen and total phosphorus in water are not thoroughly digested, and the working efficiency is low.
Disclosure of Invention
In order to solve the technical problems, the invention provides a digestion device for the analysis pretreatment of total nitrogen and total phosphorus in environmental monitoring, which can fully stir and mix the mixed liquid in a working cavity and is beneficial to improving the digestion efficiency of the total nitrogen and the total phosphorus in water.
The invention discloses a digestion device for analysis pretreatment of total nitrogen and total phosphorus in environmental monitoring, which comprises a box body, wherein the box body comprises a front side wall, a rear side wall, a left side wall, a right side wall, a top wall and a bottom wall; the box body is internally provided with an arc-shaped plate protruding towards the lower side, and the arc-shaped plate is fixedly connected with the front side wall, the rear side wall, the left side wall and the right side wall of the box body in a sealing way; a working chamber is defined between the arc-shaped plate and the top wall of the box body; the top wall of the box body is provided with a water inlet which is communicated with the working cavity; the central area of the bottom wall of the arc-shaped plate is provided with a drain pipe, the input end of the drain pipe is communicated with the working cavity, the device is characterized in that,
the rotating shaft is arranged in the working cavity; the rotating shaft is arranged along the front-back direction, the rear end of the rotating shaft is rotationally connected with the rear side wall in the box body, and the front end of the rotating shaft is rotationally connected with the driving mechanism after passing through the front side wall of the box body;
the rotating shaft is fixedly sleeved with a branch frame, the branch frame is fixedly sleeved with an annular plate, and a plurality of groups of stirring mechanisms are uniformly arranged on the annular plate along the circumferential direction.
Further, the stirring mechanism comprises a connecting shaft and a stirring plate; the connecting shaft is arranged on the circumferential side wall of the annular plate and extends outwards along the radial direction of the annular plate; the stirring plate is fixedly arranged at the outer end of the connecting shaft.
Further, the stirring mechanism further comprises a bevel gear; the connecting shaft further extends radially inward of the annular plate to penetrate a circumferential side wall of the annular plate, the connecting shaft being rotatable with respect to the annular plate; the bevel gear is fixedly arranged at the inner end of the connecting shaft.
Furthermore, a plurality of mounting rods which are uniformly distributed along the circumferential direction are arranged on the rear side wall in the box body, bevel gear rings are fixedly supported at the front ends of the mounting rods, and the bevel gears of the plurality of groups of stirring mechanisms are all meshed with the bevel gear rings.
Further, the branch frame comprises a base part and a plurality of frame parts; the base part is sleeved on the rotating shaft and rotates along with the rotating shaft; the plurality of bracket parts extend along the radial direction of the base part and are uniformly arranged at intervals along the circumferential direction of the base part; the tail ends of the support parts are fixedly connected with the circumferential side wall of the annular plate.
Further, the driving mechanism comprises a motor, a transmission shaft, a driving wheel, a driven wheel and a belt; the motor is installed the bottom of box, the output of motor sets up the transmission shaft, the front end of transmission shaft sets up the action wheel, the front end of pivot sets up from the driving wheel, the action wheel with from the cover establish on the driving wheel the belt.
Furthermore, the output end of the drain pipe penetrates through the left side wall or the right side wall of the box body, and a control valve is arranged on the drain pipe.
Further, a pressure relief valve is arranged on the top wall of the box body and communicated with the working cavity.
Further, the bottom wall of the arc-shaped plate is provided with a left heater and a right heater respectively in the areas close to the left side wall and the right side wall of the box body.
Further, the lower part of the left side wall and the right side wall of box is provided with left maintenance mouth and right maintenance mouth respectively, left side maintenance mouth with right maintenance mouth all with the arc with space intercommunication between the diapire of box, and left side maintenance mouth with right maintenance mouth department is provided with left baffle and right baffle.
Compared with the prior art, the invention has the beneficial effects that:
actuating mechanism drives the pivot rotation, and the pivot drives the annular slab through the feeder pillar and rotates, and the annular slab drives multiunit rabbling mechanism and rotates, stirs through the mixed liquid of multiunit rabbling mechanism in to the work intracavity, and multiunit rabbling mechanism rotates in step, has not only increased the stirring scope, more makes the stirring to the mixed liquid in the work intracavity more abundant. The mixed liquid in the working cavity is fully stirred and mixed, and the digestion efficiency of total nitrogen and total phosphorus in water is improved.
The annular plate drives the multiple groups of stirring mechanisms to rotate around the rotating shaft, and the bevel gears are meshed with the bevel gear rings, so that the bevel gears rotate around the connecting shafts while revolving around the rotating shaft, and then the stirring plates are driven to rotate through the connecting shafts. That is, the rotation of the plurality of stirring plates around the connecting shaft while revolving around the rotating shaft is realized, so that the mixed liquid in the working cavity can be sufficiently stirred by the plurality of stirring plates. In addition, the branch frame can also stir the mixed liquid in the working cavity, so that the mixing effect is improved.
Drawings
FIG. 1 is a schematic structural diagram of a digestion device used for the pretreatment of total nitrogen and total phosphorus analysis in environmental monitoring according to the present invention;
FIG. 2 is a schematic perspective view of a portion of the agitating mechanism of FIG. 1;
FIG. 3 is a schematic perspective view of a portion of the drive mechanism of FIG. 1;
FIG. 4 is a schematic left side view of the coupling structure of the case, the mounting bar and the bevel ring gear of FIG. 1;
[ description of reference ]
1. A box body; 2. a working chamber; 3. a water inlet; 4. a box cover; 5. a handle; 6. an arc-shaped plate; 7. a left heater; 8. a right heater; 9. a drain pipe; 10. a control valve; 11. a rotating shaft; 12. a branch frame; 13. an annular plate; 14. mounting a rod; 15. a bevel gear ring; 16. a connecting shaft; 17. a bevel gear; 18. stirring the plate; 19. a motor; 20. a drive shaft; 21. a driving wheel; 22. a driven wheel; 23. a belt; 24. a left service port; 25. a right maintenance port; 26. a left baffle; 27. a right baffle; 28. a support leg; 29. a roller; 30. a left groove; 31. a right groove; 32. a pressure relief valve; 33. and (6) operating the hole.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. As used herein, the terms "front," "back," "left," "right," "up," "down," and like terms of orientation refer to the orientation of FIG. 1.
As shown in fig. 1 to 4, the digestion apparatus for the pre-analysis treatment of total nitrogen and total phosphorus in environmental monitoring according to the present invention includes a box body 1, and the box body 1 includes a front side wall, a rear side wall, a left side wall, a right side wall, a top wall and a bottom wall. The inside of box 1 is provided with towards the convex arc 6 of downside, and arc 6 and the equal sealing fixed connection of preceding lateral wall, back lateral wall, left side wall and the right side wall of box 1. A working chamber 2 is defined between the arc-shaped plate 6 and the top wall of the tank 1. The roof of box 1 is provided with water inlet 3, and water inlet 3 and working chamber 2 intercommunication to be provided with case lid 4 in water inlet 3 department, 4 tops of case lid are provided with handle 5. And the areas of the bottom wall of the arc-shaped plate 6, which are close to the left side wall and the right side wall of the box body 1, are respectively provided with a left heater 7 and a right heater 8. The central region of the bottom wall of the arc-shaped plate 6 is provided with a drain pipe 9, the input end of the drain pipe 9 is communicated with the working cavity 2, the output end of the drain pipe 9 penetrates through the right side wall of the box body 1, and the drain pipe 9 is provided with a control valve 10. Those skilled in the art will appreciate that the output end of the drain pipe 9 may also pass through the left side wall of the cabinet 1.
The digestion device also comprises a rotating shaft 11 arranged in the working cavity 2, the rotating shaft 11 is arranged along the front-back direction, the rear end of the rotating shaft 11 is rotatably connected with the rear side wall in the box body 1, and the front end of the rotating shaft 11 rotatably penetrates through the front side wall of the box body 1 and then is connected with a driving mechanism. A branch frame 12 is fixedly sleeved on the rotating shaft 11, and an annular plate 13 is fixedly sleeved on the branch frame 12. A plurality of groups of stirring mechanisms are uniformly arranged on the annular plate 13 along the circumferential direction.
Preferably, the branch frame 12 includes a base portion sleeved on the rotating shaft 11 to rotate along with the rotating shaft 11, and a plurality of frame portions each extending in a radial direction of the base portion and arranged at uniform intervals in a circumferential direction of the base portion. The ends of the plurality of bracket portions are all fixedly connected with the circumferential side wall of the annular plate 13.
In the use, actuating mechanism drives pivot 11 rotatoryly, and pivot 11 drives annular plate 13 through branch frame 12 and rotates, and annular plate 13 drives multiunit rabbling mechanism and rotates, stirs through the mixed liquid of multiunit rabbling mechanism in to working chamber 2, and multiunit rabbling mechanism rotates in step, has not only increased the stirring scope, more makes the stirring to the mixed liquid in the working chamber 2 more abundant. The mixed liquid in the working cavity 2 is fully stirred and mixed, which is beneficial to improving the digestion efficiency of the total nitrogen and the total phosphorus in the water.
As a preference of the above embodiment, as shown in fig. 1 and 2, the stirring mechanism includes a connecting shaft 16, a bevel gear 17, and a stirring plate 18. The connecting shaft 16 extends through the circumferential side wall of the annular plate 13 in the radial direction of the annular plate 13, and is rotatable relative to the annular plate 13. The end of the connecting shaft 16 near the center of the circular plate 13 is called the inner end, and the end far from the center of the circular plate 13 is called the outer end. The stirring plate 18 is fixedly arranged at the outer end of the connecting shaft 16, and the bevel gear 17 is fixedly arranged at the inner end of the connecting shaft 16. A plurality of mounting rods 14 which are uniformly distributed along the circumferential direction are arranged on the rear side wall in the box body 1, and the front ends of the mounting rods 14 are fixedly supported with bevel gear rings 15. A plurality of bevel gears 17 are each meshed with the bevel ring gear 15.
In the using process, the annular plate 13 drives the multiple groups of stirring mechanisms to rotate around the rotating shaft 11, and simultaneously, the bevel gears 17 are all meshed with the bevel gear ring 15, so that the bevel gears 17 revolve around the rotating shaft 11 and rotate around the connecting shaft 16, and further the stirring plate 18 is driven to rotate through the connecting shaft 16. That is, it is achieved that the plurality of agitating plates 18 rotate about the connecting shaft 16 while revolving around the rotating shaft 11, so that the agitating plates 18 can sufficiently agitate the mixed liquid in the working chamber 2. In addition, the branch frame 12 can stir the mixed liquid in the working chamber 2, thereby improving the mixing effect.
As a preferable example of the above embodiment, as shown in fig. 3, the driving mechanism includes a motor 19, a transmission shaft 20, a driving pulley 21, a driven pulley 22, and a belt 23. The motor 19 is installed in the bottom of box 1, and the output of motor 19 sets up transmission shaft 20, and the front end of transmission shaft 20 sets up action wheel 21, and the front end of pivot 11 sets up from driving wheel 22, overlaps on action wheel 21 and the driven wheel 22 and establishes belt 23.
In the use process, motor 19 drive action wheel 21 is rotatory, and action wheel 21 passes through belt 23 and drives driven wheel 22 rotation, and driven wheel 22 drives pivot 11 rotation, and pivot 11 drives multiunit rabbling mechanism and stirs the mixture to the mixed liquid in the working chamber 2 and mix.
As a preferable example of the above embodiment, as shown in fig. 1, the lower portions of the left and right side walls of the box body 1 are provided with a left service opening 24 and a right service opening 25, respectively, the left service opening 24 and the right service opening 25 are both communicated with the space between the arc-shaped plate 6 and the bottom wall of the box body 1, and a left baffle 26 and a right baffle 27 are provided at the left service opening 24 and the right service opening 25, respectively.
In the use process, the left baffle 26 and the right baffle 27 are opened, the left heater 7 and the right heater 8 are maintained and replaced from the left maintenance opening 24 and the right maintenance opening 25 respectively, and the operation is convenient.
Preferably, the bottom of the box body 1 is provided with four legs 28, and the bottom ends of the four legs 28 are all rotatably provided with rollers 29.
In the use process, the idler wheel 29 is convenient for workers to move the device, and the movement is flexible.
As a preference of the above embodiment, upper portions of the left and right side walls of the case 1 are provided with left and right grooves 30 and 31, respectively.
In the use, when the staff removed the device, it was more convenient that the hand stretched into in left recess 30 and the right recess 31.
Preferably, in the above embodiment, the top wall of the tank 1 is provided with a relief valve 32, and the relief valve 32 communicates with the working chamber 2.
In use, as the temperature in the working chamber 2 increases, the pressure in the working chamber 2 increases, and the pressure in the working chamber 2 is released by the relief valve 32 to keep the pressure in the working chamber 2 constant.
As a preference of the above embodiment, the bottom wall of the case 1 is provided with an operation hole 33 at a position corresponding to the control valve 10.
In the use process, the control valve 10 is operated through the operation hole 33, and the operation is convenient and quick.
In the implementation process of the invention, the driving mechanism drives the rotating shaft 11 to rotate, the rotating shaft 11 drives the annular plate 13 to rotate through the branch frame 12, the annular plate 13 drives the multiple groups of stirring mechanisms to rotate, the mixed liquid in the working cavity 2 is stirred through the multiple groups of stirring mechanisms, and the multiple groups of stirring mechanisms rotate synchronously, so that the stirring range is enlarged, and the mixed liquid in the working cavity 2 is stirred more fully. The mixed liquid in the working cavity 2 is fully stirred and mixed, which is beneficial to improving the digestion efficiency of the total nitrogen and the total phosphorus in the water. When the annular plate 13 drives the multiple groups of stirring mechanisms to rotate around the rotating shaft 11, the bevel gears 17 are all meshed with the bevel gear ring 15, so that the bevel gears 17 revolve around the rotating shaft 11 and rotate around the connecting shaft 16, and then the stirring plates 18 are driven to rotate through the connecting shafts 16. That is, the rotation of the plurality of agitating plates 18 about the connecting shaft 16 while revolving around the rotating shaft 11 is realized, so that the mixed liquid in the working chamber 2 can be sufficiently agitated by the plurality of agitating plates 18. In addition, the branch frame 12 can stir the mixed liquid in the working chamber 2, thereby improving the mixing effect.
According to the digestion device for the analysis pretreatment of the total nitrogen and the total phosphorus in the environmental monitoring, the installation mode, the connection mode or the arrangement mode of all the components are common mechanical modes, and the specific structures, models and coefficient indexes of all the components are self-contained technologies, so that the digestion device can be implemented as long as the beneficial effects can be achieved, and further description is omitted.
An environmental monitoring digestion unit used in pretreatment of total nitrogen and total phosphorus analysis of the present invention, where not otherwise stated, the directional terms included in the terms "upper, lower, left, right, front, back, inner, outer, and vertical horizontal" are merely representative of the orientation of the term in the normal use state, or are colloquially understood by those skilled in the art, and should not be construed as limiting the term, while the numerical terms "first", "second", and "third" are not intended to represent specific quantities or sequences, but are merely for name differentiation, and the terms "include", or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or is also included as such a process, A method, article, or apparatus that is inherent to the element.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The digestion device for the analysis pretreatment of total nitrogen and total phosphorus in environmental monitoring comprises a box body (1), wherein the box body (1) comprises a front side wall, a rear side wall, a left side wall, a right side wall, a top wall and a bottom wall; an arc-shaped plate (6) protruding towards the lower side is arranged inside the box body (1), and the arc-shaped plate (6) is fixedly connected with the front side wall, the rear side wall, the left side wall and the right side wall of the box body (1) in a sealing manner; a working chamber (2) is defined between the arc-shaped plate (6) and the top wall of the box body (1); a water inlet (3) is formed in the top wall of the box body (1), and the water inlet (3) is communicated with the working cavity (2); a water discharge pipe (9) is arranged in the central area of the bottom wall of the arc-shaped plate (6), the input end of the water discharge pipe (9) is communicated with the working cavity (2),
the device also comprises a rotating shaft (11) arranged in the working cavity (2); the rotating shaft (11) is arranged along the front-back direction, the rear end of the rotating shaft is rotationally connected with the rear side wall in the box body (1), and the front end of the rotating shaft is rotationally connected with the driving mechanism after passing through the front side wall of the box body (1);
the rotating shaft (11) is fixedly sleeved with a branch frame (12), the branch frame (12) is fixedly sleeved with an annular plate (13), and a plurality of groups of stirring mechanisms are uniformly arranged on the annular plate (13) along the circumferential direction.
2. The environmental monitoring pre-treatment digestion apparatus for total nitrogen and total phosphorus analysis according to claim 1, wherein the agitation mechanism comprises a connecting shaft (16) and an agitation plate (18); the connecting shaft (16) is arranged on the circumferential side wall of the annular plate (13) and extends outwards along the radial direction of the annular plate (13); the stirring plate (18) is fixedly arranged at the outer end of the connecting shaft (16).
3. The environmental monitoring pre-treatment digestion apparatus for total nitrogen and total phosphorus analysis according to claim 2, wherein the stirring mechanism further comprises a bevel gear (17); the connecting shaft (16) further extends radially inward of the annular plate (13) to penetrate a circumferential side wall of the annular plate (13), the connecting shaft (16) being rotatable with respect to the annular plate (13); the bevel gear (17) is fixedly arranged at the inner end of the connecting shaft (16).
4. The digestion device used for the pre-analysis treatment of total nitrogen and total phosphorus in the environmental monitoring as claimed in claim 3, wherein a plurality of mounting rods (14) are uniformly distributed along the circumferential direction on the rear side wall in the box body (1), the front ends of the plurality of mounting rods (14) are fixedly supported with bevel gear rings (15), and a plurality of bevel gears (17) of the plurality of groups of stirring mechanisms are all meshed with the bevel gear rings (15).
5. The environmental monitoring pre-treatment digestion apparatus for total nitrogen and total phosphorus analysis according to claim 1, wherein the branch frame (12) includes a base portion and a plurality of frame portions; the base part is sleeved on the rotating shaft (11) and rotates along with the rotating shaft (11); the plurality of bracket parts extend along the radial direction of the base part and are uniformly arranged at intervals along the circumferential direction of the base part; the tail ends of the support parts are fixedly connected with the circumferential side wall of the annular plate (13).
6. The environmental monitoring digestion device used for the pre-analysis treatment of total nitrogen and total phosphorus according to claim 1, characterized in that the driving mechanism comprises a motor (19), a transmission shaft (20), a driving wheel (21), a driven wheel (22) and a belt (23); motor (19) are installed the bottom of box (1), the output of motor (19) sets up transmission shaft (20), the front end of transmission shaft (20) sets up action wheel (21), the front end of pivot (11) sets up from driving wheel (22), action wheel (21) with from the cover establish on driving wheel (22) belt (23).
7. The digestion device used for the pre-analysis treatment of total nitrogen and total phosphorus in the environmental monitoring system as claimed in claim 1, wherein the output end of the drain pipe (9) passes through the left side wall or the right side wall of the box body (1), and the drain pipe (9) is provided with a control valve (10).
8. The digestion device used for the pre-analysis treatment of total nitrogen and total phosphorus based on environmental monitoring as claimed in claim 1, wherein a pressure relief valve (32) is arranged on the top wall of the box body (1), and the pressure relief valve (32) is communicated with the working chamber (2).
9. The digestion device for the pre-analysis treatment of total nitrogen and total phosphorus according to the claim 1, characterized in that the bottom wall of the arc-shaped plate (6) is provided with a left heater (7) and a right heater (8) respectively at the areas close to the left side wall and the right side wall of the box body (1).
10. The digestion device used for the pre-analysis treatment of total nitrogen and total phosphorus in the environmental monitoring process as claimed in claim 9, wherein the lower parts of the left side wall and the right side wall of the box body (1) are respectively provided with a left maintenance port (24) and a right maintenance port (25), the left maintenance port (24) and the right maintenance port (25) are both communicated with the space between the arc-shaped plate (6) and the bottom wall of the box body (1), and a left baffle plate (26) and a right baffle plate (27) are arranged at the left maintenance port (24) and the right maintenance port (25).
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| CN202111016501.5A CN113720675A (en) | 2021-08-31 | 2021-08-31 | Digestion device for total nitrogen and total phosphorus analysis pretreatment in environmental monitoring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620787A (en) * | 2022-03-16 | 2022-06-14 | 上源环工生态环境科技(苏州)有限公司 | Water environment treatment equipment |
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