CN209803116U

CN209803116U - COD analyzer

Info

Publication number: CN209803116U
Application number: CN201822091136.4U
Authority: CN
Inventors: 王栋; 袁芳; 葛华丽
Original assignee: Beijing Jingxiang Environmental Technology Co Ltd
Current assignee: Beijing Jingxiang Environmental Technology Co Ltd
Priority date: 2018-12-12
Filing date: 2018-12-12
Publication date: 2019-12-17
Anticipated expiration: 2028-12-12

Abstract

The utility model is suitable for the technical field of water quality analysis instruments, and provides a COD analyzer, which comprises an analysis instrument, wherein the analysis instrument is connected with a wastewater treatment barrel and a sample introduction barrel, and the wastewater treatment barrel comprises a barrel body internally provided with a stirring structure and a third filtering structure; the stirring structure comprises a stirring shaft, the top of the stirring shaft is connected with a driving motor, and a stirring paddle is arranged on the stirring shaft; the third filtering structure comprises a filtering layer, the filtering layer is provided with a sealing area, the filtering layer surrounded by the sealing area forms a filling area, and a fixing area is formed outside the sealing area; the sampling cylinder is internally provided with a first filtering structure and a second filtering structure which are arranged from left to right. Therefore, the utility model discloses can filter most impurity in the sewage, avoid impurity to damage the sensor among the analysis appearance or the influence analysis appearance, improve the accuracy of testing result, make the analysis appearance can adapt to the water environment of various complicacies.

Description

COD analyzer

Technical Field

the utility model relates to a water quality analysis instrument technical field especially relates to a COD analyzer.

Background

The reducing substances in the water comprise various organic substances, nitrite, sulfide, ferrous salt and the like, but the main substances are organic substances, so the Chemical Oxygen Demand (COD) is used as an index for measuring the content of the organic substances in the water, and the larger the COD value is, the more serious the water body is polluted by the organic substances. COD's survey need use the COD analysis appearance, and the appearance structure of advancing of current COD analysis appearance generally includes: water pump, inlet tube, water sample groove, intake pipe.

the existing COD analyzer sample introduction structure can only treat and detect sewage and make simple sediment, remove bulky sundries, if the water environment is more complicated, the interference substances in the sewage to be detected can not be removed, the detection result of water quality is influenced, even the damage of an instrument sensor is caused, and therefore the existing COD analyzer can not adapt to various complicated water environments.

in addition, when the COD analyzer is used for water quality detection, an acidic potassium permanganate oxidation method and a potassium dichromate oxidation method are often adopted, and after sewage detection is completed, potassium permanganate or potassium dichromate, sulfate radicals, mercury sulfate and other substances are inevitably remained in the sewage, and if the sewage is not treated and directly poured out, oxidation or corrosion is generated on subsequent conveying pipelines or appliances, so that the service life of the subsequent conveying pipelines or appliances is shortened, and secondary pollution is also caused to the environment.

In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks, an object of the present invention is to provide a COD analyzer, which can filter most of impurities in sewage, avoid the impurities from damaging the analyzer or affecting the sensor in the analyzer, improve the accuracy of the detection result of the analyzer, prolong the service life of the analyzer, and make the analyzer adapt to various complex water environments; meanwhile, due to the arrangement of the backwashing structure, the consumption of consumables in the sewage detection process is reduced, and the detection cost is reduced.

in order to realize the purpose, the utility model provides a COD analyzer, including the analytical instrument, the analytical instrument connects a waste water treatment section of thick bamboo through going out the appearance union coupling, the analytical instrument advances an appearance section of thick bamboo through advancing the appearance union coupling.

the waste water treatment barrel comprises a barrel body, a top cover of the barrel body is connected with the sample outlet pipe, a feed inlet is further formed in the top cover of the barrel body, the bottom of the barrel body is connected with a waste water outlet pipe, and a stirring structure and a third filtering structure are arranged inside the barrel body; the stirring structure comprises a stirring shaft, the top of the stirring shaft is connected with a driving motor, the driving motor is positioned on the top cover of the wastewater treatment barrel, and a stirring paddle is arranged on the stirring shaft.

The third filter structure comprises a filter layer; the filter layer is provided with a sealing area, the filter layer surrounded by the sealing area forms a filling area, an interlayer of the filling area is filled with an adsorption filtering material, the filling area is uniformly provided with fixing points, and the outside of the sealing area forms a fixing area; the two filter layers in the sealing area are mutually attached; the third filtering structure further comprises a first fixing block and a second fixing block which are clamped in the fixing area, the first fixing block and the second fixing block are connected with the inner wall of the barrel, and the first fixing block and the second fixing block are fixed together through bolts.

A first filtering structure and a second filtering structure which are arranged from left to right are arranged in the sample feeding cylinder, a sewage cavity is formed on the left side of the first filtering structure in the sample feeding cylinder, and a treatment water cavity is formed on the right side of the second filtering structure in the sample feeding cylinder; the bottom of the sewage cavity is connected with a sewage inlet pipe, and the upper part of the treatment water cavity is connected with the sampling pipe; first filtration includes first filter screen, second filtration includes the second filter screen, first filter screen the mesh number of second filter screen is 10 meshes, 40 meshes respectively, first filter screen with the second filter screen is fixed by two splint, splint are connected the inner wall of a kind of section of thick bamboo.

According to the utility model discloses a COD analyzer, stirring rake top-down is equipped with 2 ~ 4 groups.

According to the utility model discloses a COD analyzer, every group be equipped with 3 ~ 5 oar pieces on the stirring rake.

According to the utility model discloses a COD analyzer, the angle of inclination that has 10 ~ 15 degrees between the horizontal plane of paddle and waste liquid.

According to the utility model discloses a COD analyzer, first filtration is still including connecting the board ear of splint side, the board ear joint is in the ear groove, the ear groove is connected the inner wall of a kind section of thick bamboo.

According to the utility model discloses a COD analyzer, first filtration with distance between the second filtration is 10 ~ 20 cm.

According to the utility model discloses a COD analyzer, the material of first filter screen is the stainless steel.

According to the utility model discloses a COD analyzer, the material of second filter screen is the fibre.

According to the utility model discloses a COD analyzer, advance appearance pipe, go out appearance pipe, sewage and advance the pipe and waste water exit tube and all connect the water pump respectively.

According to the utility model discloses a COD analyzer, ultraviolet tube is connected to the top cap bottom surface of barrel.

the utility model aims at providing a COD analyzer, through setting up the first filtration and second filtration, the first filtration can filter the bigger massive impurity in the sewage, avoid impurity to enter into the analyzer, cause the jam to the analyzer; the second filtering structure can further filter small particle impurities in the sewage, so that the impurities are prevented from damaging the analyzer or influencing a sensor in the analyzer, the accuracy of a detection result of the inorganic substance analyzer is improved, the service life of the inorganic substance analyzer is prolonged, and the inorganic substance analyzer can adapt to various complex water body environments; the utility model is also provided with a wastewater treatment barrel, a third filtering structure is arranged in the wastewater treatment barrel, the third filtering structure comprises a filtering layer, the filtering layer is provided with a sealing area, the filtering layer surrounded by the sealing area forms a filling area, and an adsorption filtering material is filled in an interlayer of the filling area; the filtering layer can filter some precipitated substances generated by chemical reaction in the wastewater, and the adsorption filtering material can further remove the substances such as residual ions, micro particles, peculiar smell and the like in the wastewater, so that the secondary pollution of the wastewater to the environment is avoided; still be equipped with the stirring structure in the waste water treatment section of thick bamboo, the stirring structure can make waste liquid and acid-base adjusting agent or chemical reagent contact more even, and the reaction is more thorough, and waste liquid treatment effect is better.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of part A of the present invention;

FIG. 3 is a schematic view of the structure of the wastewater treatment cartridge of the present invention;

FIG. 4 is a schematic view of the D-oriented structure of FIG. 3;

FIG. 5 is a schematic view of a third filter structure of the present invention;

FIG. 6 is a schematic view of the structure of FIG. 5 in the direction B-B;

FIG. 7 is a schematic view of the structure of part C of FIG. 3;

FIG. 8 is a schematic view of part E of FIG. 5;

FIG. 9 is a schematic view of the stirring structure of the present invention;

FIG. 10 is an enlarged schematic view of the stirring structure of the present invention;

FIG. 11 is a schematic view of the structure of the stirring shaft of the present invention;

FIG. 12 is a schematic view of the D-direction structure of FIG. 10;

FIG. 13 is a schematic view of the back washing structure of the present invention;

In the figure, 1-analytical instrument, 11-sample inlet tube, 12-sample outlet tube, 13-water pump; 2-sample feeding cylinder, 21-sewage inlet pipe, 22-first backwashing inlet pipe, 23-first backwashing outlet pipe, 24-first filtering structure, 241-first filtering net, 242-clamping plate, 243-lug and 244-lug groove; 25-a second filter structure; 3-a third filter structure, 31-a filter layer, 32-a seal area, 321-a seal line, 322-a seal layer; 33-filled region, 331-adsorption filter material, 332-fixation point, 333-fixation line; 34-a fixing area, 35-a first fixing block, 351-a second fixing block; 4-a limiting block, 5-a wastewater treatment barrel, 51-a barrel body, 52-a feed inlet, 53-an ultraviolet lamp tube, 54-a wastewater outlet tube, 55-a second backwashing inlet tube, 56-a second backwashing outlet tube, 57-a liquid storage tank, 58-a stirring shaft, 581-a stirring paddle and 582-a driving motor.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, the utility model provides a COD analyzer, including analytical instrument 1, analytical instrument 1 connects a waste water treatment section of thick bamboo 5 through a appearance pipe 12, and analytical instrument 1 connects a sample cylinder 2 through a sample inlet pipe 11, is equipped with first filtration 24 and second filtration 25 that connect respectively on sample cylinder 2 inner wall and arrange from left to right in the sample cylinder 2, and the distance between first filtration 24 and second filtration 25 is 10 ~ 20cm, and the left side of first filtration 24 forms the sewage chamber in sample cylinder 2, and the right side of second filtration 25 forms the processing water chamber in sample cylinder 2; the bottom of the sewage cavity is connected with a sewage inlet pipe 21, and the upper part of the treatment water cavity is connected with a sample inlet pipe 11; the sample inlet pipe 11, the sample outlet pipe 12 and the sewage inlet pipe 21 are respectively connected with a water pump 13.

Referring to fig. 2, the first filter structure 24 includes a first filter 241 and two clamping plates 242 for fixing the first filter 241, and the clamping plates 242 are connected to the inner wall of the sample cylinder 2, so that the first filter structure 24 is fixed in the sample cylinder 2; the first filter screen 241 mainly functions to filter larger blocky impurities in the sewage and prevent the impurities from entering the analyzer 1 and blocking the analyzer 1, so that the first filter screen 241 is made of stainless steel, and a stainless steel mesh is acid-resistant, alkali-resistant, high-temperature-resistant, strong in tension and wear resistance, and has a mesh number of 10 meshes; the first filtering structure 24 further comprises a plate lug 243 connected to the side of the clamping plate 242, the plate lug 243 is clamped in the lug groove 244, and the lug groove 244 is connected to the inner wall of the sample injection cylinder 2; the plate lugs 243 and lug grooves 244 prevent the first filter structure 24 from moving left and right under pressure.

The second filtering structure 25 comprises a second filtering net, the material of the second filtering net is fiber, the mesh number of the second filtering net is 40 meshes, and other structures of the second filtering structure 25 are the same as those of the first filtering structure 24, and are not described herein again; the fiber filter screen is acid-resistant, alkali-resistant, high temperature resistant, has fine wearability and corrosion resistance, and the resilience is fine, filters more finely, can further filter the tiny particle impurity in the sewage, avoids impurity damage analytical instrument 1 or influences the sensor in the analysis appearance.

Referring to fig. 3 and 4, the wastewater treatment cartridge 5 includes a cartridge body 51, and a top cover of the cartridge body 51 is connected to the outlet tube 12; the top cover of the cylinder 51 is further provided with a feed inlet 52, an acid-base regulator or a chemical reagent can be fed from the feed inlet 52, the acid-base regulator is used for regulating the acidity and alkalinity of the wastewater, and the chemical reagent can be fed according to chemical substances contained in the wastewater, so as to remove the chemical substances originally contained in the wastewater, for example: the waste water contains silver sulfate and barium chloride can be added; the waste water contains potassium dichromate, and the oxidizing property of the waste water can be reduced by adding ethanol; the bottom surface of the top cover of the cylinder body 51 is connected with ultraviolet lamp tubes 53 for sterilizing and disinfecting waste water, at least two ultraviolet lamp tubes 53 are arranged, and the ultraviolet lamp tubes 53 are electrically connected with the control unit; the bottom of the cylinder body 51 is connected with a waste water outlet pipe 54, and the waste water outlet pipe 54 is connected with the water pump 13, so that the waste liquid treated in the waste water treatment cylinder 5 can flow out quickly, and the working efficiency is improved; the inside of the cylinder 51 is provided with a stirring structure and a third filtering structure 3.

Referring to fig. 5 and 6, the third filter structure 3 includes a filter layer 31; the filter layer 31 is provided with a sealing area 32, the filter layer 31 surrounded by the sealing area 32 forms a filling area 33, an adsorption filter material 331 is filled in an interlayer of the filling area 33, fixing points 332 are uniformly arranged on the filling area 33, and a fixing area 34 is formed outside the sealing area 32; the filter layer 31 is provided with two layers, and the two filter layers 31 of the sealing area 32 are attached to each other.

The filtering layer 31 can filter some precipitated substances generated by chemical reaction in the wastewater; the adsorption filter material 331 comprises activated carbon, bentonite and fly ash, and the weight ratio of the activated carbon to the bentonite to the fly ash is 5: 3: 2; the adsorption filter material 331 can further remove substances such as ions, fine particles, and odor remaining in the wastewater, and reduce the pollution of the wastewater.

Referring to fig. 7, the third filter structure 3 further includes a first fixing block 35 and a second fixing block 351 clamping the fixing region 34, the first fixing block 35 and the second fixing block 351 are connected to the inner wall of the cylinder 51, the first fixing block 35 and the second fixing block 351 are fixed together by bolts, and the bolts also pass through the fixing region 34 and fix the fixing region 34 between the first fixing block 35 and the second fixing block 351; the sewage enters the third filtering structure 3 under the action of pressure, and in order to prevent the sewage from entering the third filtering structure 3, the sewage directly passes through the fixing area 34 on the side edge without passing through the filling area 33 under the action of pressure, so that a short circuit is formed, the first fixing block 35 and the second fixing block 351 are also clamped with the sealing area 32, and the fixing area 34 and the sealing area 32 are all clamped in the fixing area 34 and the sealing area 32, so that the sewage can only pass through the filling area 33 when entering the third filtering structure 3, and the short circuit is fully prevented.

the material of filter layer 31 can be fibre, stainless steel or nylon, because the utility model is used for sewage treatment, the quality of water of sewage is generally more complicated, probably has strong acid or strong basicity, also can have strong corrosivity, consequently, the filter layer need have acidproof, alkali-proof, wear-resisting performance, and will carry out the separation of solid and liquid, consequently, as an optimal scheme, the material of filter layer is the fibre.

The width of the sealing area 32 is determined according to the size of the third filter structure 3, the width of the sealing area 32 is 5-10 mm, referring to fig. 6 and 8, the sealing area 32 includes a sealing line 321, the sealing line 321 connects the two filter layers 31, so that the adsorption filter material 331 is fixed inside the filling area 33 and cannot leak out, the sealing line 321 can be made of metal wires or fibers, and the sealing line 321 is made of fibers; in order to prevent the third filtering structure 3 from being used for a long time, the sealing line 321 is broken by the sewage under the action of pressure, and a short circuit occurs, the sealing line 321 is also coated with the sealing layer 322, the sealing layer 322 is uniformly distributed on two sides of the sealing line 321, and in order to improve the adsorption filtering effect of the third filtering structure 3, in the utility model, the width of the sealing layer 322 is 5-10 mm, the thickness of the sealing layer 322 is 0.7-1.5 mm, and the width of the sealing layer 322 is the same as that of the sealing area 32; the sealing layer 322 is made of glass sealant or asphalt resin.

In order to ensure that the adsorption filtration material 331 can be uniformly distributed in the filling area 33 and improve the service life and the filtration effect of the third filtration structure 3, the filling area 33 is uniformly provided with fixing points 332, the number of the fixing points 332 can be determined according to the specification and the size of the third filtration structure 3, so that the fixing points 332 can divide the filling area 33 of the third filtration structure 3 into a plurality of modules with basically equal size, the adsorption filtration material 331 in each module can be uniformly distributed, the filtration effect of the third filtration structure 3 is uniform and stable, the fixing manner of the fixing points 332 can use fixing lines 333, and the fixing lines 333 penetrate through the filling area 33.

Referring to fig. 4, when sewage enters the third filtering structure 3, the sewage has pressure, and in order to prevent the third filtering structure 3 from moving downwards under the action of the pressure, the structure is unstable, and the service life of the whole set of equipment is shortened, therefore, a limiting block 4 for limiting the position of the third filtering structure 3 is further arranged in the cylinder 51, the inner wall of the limiting block 4 fixedly connected with the cylinder 51 is positioned at the bottom of the third filtering structure 3, the limiting block 4 is at least provided with four groups, and the third filtering structure is uniformly and annularly arranged on the inner wall of the cylinder 51.

referring to fig. 9 and 10 and 12, the stirring structure includes (mixing) shaft 58, and driving motor 582 is connected at the top of (mixing) shaft 58, and driving motor 582 is located the top cap of waste water treatment section of thick bamboo 5, see fig. 11, is equipped with stirring rake 581 on the (mixing) shaft 58, and stirring rake 581 top-down is equipped with 2 ~ 4 groups, in the utility model discloses a, stirring rake 581 top-down is equipped with 3 groups, and every group stirring rake 581 is equipped with 3 ~ 5 paddles, in the utility model discloses in, every group stirring rake 581 is equipped with 4 paddles, has 10 ~ 15 degrees of angle of inclination between the horizontal plane of paddle and waste liquid, and like this, (mixing) shaft 58 can form the vortex in the stirring process, makes waste liquid and acid-base regulator or chemical reagent contact more evenly, and the reaction is more thorough, and waste liquid.

Referring to fig. 13, the sample inlet cylinder 2 and the wastewater treatment cylinder 5 are also respectively connected with a first backwashing structure and a second backwashing structure; the first backwashing structure comprises a first backwashing inlet pipe 22 connected to the right side of the treatment water cavity and a first backwashing outlet pipe 23 connected to the upper part of the left side of the sewage cavity, and the first backwashing outlet pipe 23 is connected with the top cover of the wastewater treatment barrel 5; the second backwashing structure comprises a second backwashing inlet pipe 55 which is connected to the left side of the wastewater treatment cylinder and is positioned at the lower part of the third filtering structure 3, and a second backwashing outlet pipe 56 which is connected to the right side of the wastewater treatment cylinder and is positioned at the upper part of the third filtering structure 3, wherein the second backwashing outlet pipe 56 is connected with a liquid storage tank 57; the first backwash inlet pipe 22, the first backwash outlet pipe 23, the second backwash inlet pipe 55 and the second backwash outlet pipe 56 are connected to the water pump 13, respectively.

when the first filtering structure 24, the second filtering structure 25 and the third filtering structure 3 are used for a long time, substances on the filter screen reach saturation, and when the filtering capacity is insufficient, the back washing structure can be opened, the substances on the first filtering structure 24, the second filtering structure 25 and the third filtering structure 3 are washed down, so that the normal filtering capacity is recovered, the first filtering structure 24, the second filtering structure 25 and the third filtering structure 3 can be reused, the consumption of consumables in the sewage detection process is reduced, and the detection cost is reduced.

In summary, the utility model is provided with the first filtering structure and the second filtering structure, the first filtering structure can filter the larger block-shaped impurities in the sewage, and the impurities are prevented from entering the analyzer and blocking the analyzer; the second filtering structure can further filter small particle impurities in the sewage, so that the impurities are prevented from damaging the analyzer or influencing a sensor in the analyzer, the accuracy of a detection result of the inorganic substance analyzer is improved, the service life of the inorganic substance analyzer is prolonged, and the inorganic substance analyzer can adapt to various complex water body environments; the utility model is also provided with a wastewater treatment barrel, a third filtering structure is arranged in the wastewater treatment barrel, the third filtering structure comprises a filtering layer, the filtering layer is provided with a sealing area, the filtering layer surrounded by the sealing area forms a filling area, and an adsorption filtering material is filled in an interlayer of the filling area; the filtering layer can filter some precipitated substances generated by chemical reaction in the wastewater, and the adsorption filtering material can further remove the substances such as residual ions, micro particles, peculiar smell and the like in the wastewater, so that the secondary pollution of the wastewater to the environment is avoided; still be equipped with the stirring structure in the waste water treatment section of thick bamboo, the stirring structure can make waste liquid and acid-base adjusting agent or chemical reagent contact more even, and the reaction is more thorough, and waste liquid treatment effect is better.

Naturally, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and it is intended that all such changes and modifications be considered as within the scope of the appended claims.

Claims

1. a COD analyzer is characterized by comprising an analyzer, wherein the analyzer is connected with a wastewater treatment barrel through a sample outlet pipe and is connected with a sample inlet barrel through a sample inlet pipe;

The waste water treatment barrel comprises a barrel body, a top cover of the barrel body is connected with the sample outlet pipe, a feed inlet is further formed in the top cover of the barrel body, the bottom of the barrel body is connected with a waste water outlet pipe, and a stirring structure and a third filtering structure are arranged inside the barrel body; the stirring structure comprises a stirring shaft, the top of the stirring shaft is connected with a driving motor, the driving motor is positioned on the top cover of the wastewater treatment barrel, and a stirring paddle is arranged on the stirring shaft;

The third filter structure comprises a filter layer; the filter layer is provided with a sealing area, the filter layer surrounded by the sealing area forms a filling area, an interlayer of the filling area is filled with an adsorption filtering material, the filling area is uniformly provided with fixing points, and the outside of the sealing area forms a fixing area; the two filter layers in the sealing area are mutually attached; the third filtering structure further comprises a first fixing block and a second fixing block which are clamped in the fixing area, the first fixing block and the second fixing block are connected with the inner wall of the barrel, and the first fixing block and the second fixing block are fixed together through bolts;

2. The COD analyzer of claim 1, wherein the stirring paddles are arranged in 2-4 groups from top to bottom.

3. The COD analyzer of claim 2, wherein each group of said stirring paddles is provided with 3-5 paddles.

4. The COD analyzer of claim 3, wherein the blade has an inclination angle of 10 to 15 degrees with respect to the horizontal plane of the waste liquid.

5. The COD analyzer of claim 1, wherein the first filtering structure further comprises a plate lug connected to the side edge of the clamping plate, the plate lug is clamped in a lug groove, and the lug groove is connected with the inner wall of the sampling cylinder.

6. the COD analyzer of claim 1, wherein the distance between the first and second filtering structures is 10-20 cm.

7. The COD analyzer of claim 6, wherein the first filter screen is made of stainless steel.

8. The COD analyzer of claim 7, wherein the second filter is made of fibers.

9. The COD analyzer of claim 1, wherein the sample inlet pipe, the sample outlet pipe, the sewage inlet pipe and the wastewater outlet pipe are each connected to a water pump.

10. The COD analyzer according to claim 1, wherein the bottom surface of the top cover of the cylinder is connected to an ultraviolet lamp tube.