CN219015821U - COD counteracts reflux unit - Google Patents

Abstract

The utility model relates to the technical field of COD digestion experiments, and discloses a COD digestion reflux device which comprises an upper machine body, wherein a lower machine body is fixedly arranged at the bottom end of the upper machine body, a heating plate is fixedly arranged at the bottom end of the lower machine body, a stirring assembly is arranged below the heating plate, and a fixing mechanism is arranged at the top end of the heating plate; the utility model provides a fixing mechanism includes the fixed plate, fixed plate bottom fixed mounting has the plug frame, the slot has been seted up on the hot plate top, the plug frame is pegged graft in the slot, through setting up fixed establishment, can make the fixed plate fix the erlenmeyer flask, make the erlenmeyer flask more stable when stirring subassembly operation, prevent that the erlenmeyer flask itself from producing to rock, lead to the mixed solution in the erlenmeyer flask to spill, cause the pollution, do not possess the function fixed to the erlenmeyer flask on having solved the heating plate in the contrast file, lead to the erlenmeyer flask to produce when stirring subassembly operation and rock, probably can make the problem that mixed solution in the erlenmeyer flask spilled.

Description

COD counteracts reflux unit

Technical Field

The utility model relates to the technical field of COD digestion experiments, in particular to a COD digestion reflux device.

Background

For the measurement of chemical oxygen demand in surface water, domestic sewage and industrial wastewater, mainly refer to the bichromate method for measuring water quality chemical oxygen demand (HJ 828-2017), a bichromate method is adopted, a known amount of potassium dichromate solution is added into a water sample, silver salt is used as a catalyst under a strong acid medium, after boiling reflux, ferrous sulfate is used as an indicator, unreduced potassium dichromate in the water sample is titrated by using ferrous ammonium sulfate, and the mass concentration of consumed oxygen is calculated from the amount of consumed potassium dichromate. In the detection process, a COD digestion reflux device is needed for digestion of the chemical oxygen demand; in the use process of the existing COD digestion reflux device, slowly adding a silver sulfate-sulfuric acid solution from the upper end of a condensing tube, and simultaneously, rotating a conical bottle to uniformly mix the silver sulfate-sulfuric acid solution with a water sample;

according to chinese patent, a COD digestion reflux apparatus is disclosed, the bulletin number of which is: CN216208037U, this patent sets up the magnetic stirring subassembly through the lower body machine below, puts the stirring in the erlenmeyer flask, and knob switch, electromagnetic component and erlenmeyer flask one-to-one correspond, through the rotational speed of the stirring in the rotation knob switch regulation erlenmeyer flask, has realized the stirring speed of the mixed solution in each erlenmeyer flask of independent regulation promptly, and is both simple and high-efficient; before the silver sulfate-sulfuric acid solution is slowly added to the upper end of the condensing tube, a knob switch corresponding to the conical flask is turned on, so that the stirrer can be adjusted to rotate, the water sample in the conical flask is automatically stirred, the conical flask is prevented from being rotated while the silver sulfate-sulfuric acid solution is added, the phenomenon of solution splashing in the adding process of the silver sulfate-sulfuric acid solution is avoided, the safety of experimental operation is improved, the conical flask does not need to be manually rotated, and the operation is simpler and more convenient; furthermore, the stirring speed of the mixed solution in each conical flask can be independently regulated according to different water sample testing requirements, so that the detection requirements of a large number of samples are well met, and the working efficiency is greatly improved;

however, the heating plate in the patent does not have the function of fixing the conical flask, so that the conical flask can shake when the stirring assembly is operated, and possibly mixed solution in the conical flask can be sprayed out to pollute the working environment, and therefore, the COD digestion reflux device is provided.

Disclosure of Invention

The utility model aims to provide a COD digestion reflux device which solves the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the COD digestion reflux device comprises an upper machine body, wherein a lower machine body is fixedly arranged at the bottom end of the upper machine body, a heating plate is fixedly arranged at the bottom end of the lower machine body, a stirring assembly is arranged below the heating plate, and a fixing mechanism is arranged at the top end of the heating plate;

the fixing mechanism comprises a fixing plate, a plug frame is fixedly arranged at the bottom end of the fixing plate, a slot is formed in the top end of the heating plate, the plug frame is plugged in the slot, a rotating shaft is connected to the bottom end of the inner wall of the plug frame through a bearing in a rotating manner, the rotating shaft penetrates through the fixing plate, the outer wall of the rotating shaft is connected with the fixing plate through a second bearing in a rotating manner, a clamping plate is fixedly sleeved on the outer wall of the rotating shaft, a clamping groove is formed in the inner wall of the slot, the clamping plate is clamped in the clamping groove, a second groove pad is fixedly arranged on the inner wall of the clamping groove, and the second groove pad is in tight contact with the outer wall surface of the clamping plate.

Preferably, the top end of the heating plate is provided with a groove, the bottom end of the inner wall of the groove is provided with a placing groove, a conical bottle is placed in the placing groove, the fixing plate is provided with a through groove, and the placing groove can play a certain limiting role on the conical bottle, so that the stability of the conical bottle in the groove is improved.

Preferably, the conical flask penetrates through the fixing plate through the through groove.

Preferably, the first groove pad is fixedly arranged on the inner wall of the through groove, and is in tight contact with the outer wall surface of the conical flask, so that hard contact between the conical flask and the fixed plate can be avoided, abrasion is caused, and a certain protection effect is achieved on the conical flask.

Preferably, the first groove pad and the second groove pad are made of wear-resistant rubber, so that the service lives of the first groove pad and the second groove pad are prolonged.

Preferably, the pivot top fixed mounting has the swivel plate, insert frame and slot looks adaptation, through setting up the swivel plate, make things convenient for personnel to rotate the pivot through the swivel plate to make things convenient for personnel's operation.

Preferably, the bottom end of the upper machine body is fixedly provided with a pipe body, and the pipe body is communicated with the top end of the conical flask in a contact manner.

The utility model provides a COD digestion reflux device. The COD digestion reflux device has the following beneficial effects:

(1) This COD digestion reflux unit through setting up fixed establishment, can make the fixed plate fix the erlenmeyer flask, makes the erlenmeyer flask more stable when stirring subassembly operation, prevents that the erlenmeyer flask itself from producing to rock, leads to the mixed solution in the erlenmeyer flask to spill, causes the pollution, has solved and has not had the function of fixing the erlenmeyer flask on the heating plate in the comparison document, leads to the erlenmeyer flask to produce when stirring subassembly operation and rocks, probably can make the problem that mixed solution in the erlenmeyer flask spilled;

(2) This COD digestion reflux unit through setting up the first groove pad, can avoid producing hard contact between erlenmeyer flask and the fixed plate, causes wearing and tearing, plays certain guard action to the erlenmeyer flask, through setting up the second groove pad, can increase the compactness of being connected between cardboard and the draw-in groove, improves the stability of cardboard in the draw-in groove to guarantee the fixed effect of fixed plate to the erlenmeyer flask, simple structure, the practicality is strong.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of a cross-sectional front view of a heating plate according to the present utility model;

FIG. 3 is a schematic diagram of the top cross-sectional configuration of the heating plate of the present utility model;

FIG. 4 is an enlarged view of the portion A of FIG. 2 according to the present utility model;

FIG. 5 is an enlarged view of the portion B of FIG. 2 according to the present utility model;

fig. 6 is an enlarged view of the C part of fig. 3 according to the present utility model.

In the figure: 1. upper body 2, lower body 3, heating plate 4, securing mechanism 5, stirring assembly 6, recess 7, placement groove 8, cone 9, through groove 10, first groove pad 11, tube 401, securing plate 402, shaft 403, clamping plate 404, insert frame 405, clamping groove 406, rotating plate 407, slot 408, second groove pad.

Detailed Description

As shown in fig. 1-6, the present utility model provides a technical solution: the utility model provides a COD digestion reflux unit, including last organism 1, go up organism 1 bottom fixed mounting has lower organism 2, lower organism 2 bottom fixed mounting has hot plate 3, recess 6 has been seted up on hot plate 3 top, standing groove 7 has been seted up to recess 6 inner wall bottom, conical flask 8 has been placed in the standing groove 7, through groove 9 has been seted up on the fixed plate 401, through setting up standing groove 7, can play certain spacing effect to conical flask 8, improve conical flask 8 stability in the recess, go up organism 1 bottom fixed mounting has body 11, body 11 and conical flask 8 top contact intercommunication, hot plate 3 below is provided with stirring subassembly 5, hot plate 3 top is provided with fixed establishment 4;

stirring subassembly is patent to be a COD digestion reflux unit, and the bulletin number is: the technology disclosed in CN 216208037U;

the fixing mechanism 4 comprises a fixing plate 401, the conical flask 8 penetrates through the fixing plate 401 through a through groove 9, a first groove pad 10 is fixedly arranged on the inner wall of the through groove 9, the first groove pad 10 is tightly contacted with the surface of the outer wall of the conical flask 8, the first groove pad 10 is arranged, hard contact between the conical flask 8 and the fixing plate 401 can be avoided, abrasion is caused, a certain protection effect is achieved on the conical flask 8, an inserting frame 404 is fixedly arranged at the bottom end of the fixing plate 401, a slot 407 is arranged at the top end of the heating plate 3, the inserting frame 404 is inserted in the slot 407, a rotating shaft 402 is rotatably connected at the bottom end of the inner wall of the inserting frame 404 through a bearing, the rotating shaft 402 penetrates through the fixing plate 401, a rotating plate 406 is fixedly arranged at the top end of the rotating shaft 402, the inserting frame 404 is matched with the slot 407, personnel can conveniently rotate the rotating shaft 402 through the rotating plate 406, the personnel can conveniently operate the rotating shaft 402 through the bearing II and the outer wall of the rotating shaft 402 is rotatably connected with the fixing plate 401, the clamping plate 403 is fixedly sleeved on the outer wall of the rotating shaft 402, the clamping groove 405 is formed in the inner wall of the slot 407, the clamping plate 403 is clamped in the clamping groove 405, the second groove pad 408 is fixedly arranged on the inner wall of the clamping groove 405, the second groove pad 408 is tightly contacted with the outer wall surface of the clamping plate 403, the tightness of connection between the clamping plate 403 and the clamping groove 405 can be increased by arranging the second groove pad 408, the stability of the clamping plate 403 in the clamping groove 405 is improved, the fixing effect of the fixing plate 401 on the conical flask 8 is ensured, the first groove pad 10 and the second groove pad 408 are both made of wear-resistant rubber, the service lives of the first groove pad 10 and the second groove pad 408 are prolonged, the fixing plate 401 can fix the conical flask 8 by arranging the fixing mechanism 4, the conical flask 8 is more stable when the stirring assembly is operated, the conical flask 8 is prevented from shaking, the mixed solution in the conical flask 8 is prevented from being spilled, and pollution is caused, the problem of do not possess the function of fixing the erlenmeyer flask on the heating plate in the comparison document, lead to the erlenmeyer flask to produce when stirring subassembly operation and rock, probably can make the mixed solution in the erlenmeyer flask spill is solved.

When the COD digestion reflux device is used, the conical flask 8 is placed in the placing groove 7, then the fixing plate 401 is sleeved on the conical flask 8, so that the conical flask 8 penetrates through the fixing plate 401 through the through groove 9, the inserting frame 404 is inserted into the inserting groove 407, when the inserting frame 404 is completely inserted into the inserting groove 407, the rotating plate 406 is rotated, the rotating plate 406 drives the rotating shaft 402 to rotate, the rotating shaft 402 drives the clamping plate 403 to rotate, the clamping plate 403 is clamped in the clamping groove 405, the inserting frame 404 is limited and fixed, the conical flask 8 is fixed by the fixing plate 401, the conical flask 8 is enabled to be more stable when the stirring assembly operates, the shaking of the conical flask 8 is prevented, the mixed solution in the conical flask 8 is caused to be spilled, the pollution is caused, the problem that the heating plate in a comparison file does not have the function of fixing the conical flask, the conical flask can shake when the stirring assembly operates, and the mixed solution in the conical flask can be spilled is likely to be caused when the stirring assembly operates is solved; through setting up slot gasket one 10, can avoid producing the rigid contact between erlenmeyer flask 8 and the fixed plate 401, cause wearing and tearing, play certain guard action to erlenmeyer flask 8, through setting up slot gasket two 408, can increase the compactness of being connected between cardboard 403 and the draw-in groove 405, improve the stability of cardboard 403 in draw-in groove 405 to guarantee the fixed effect of fixed plate 401 to erlenmeyer flask 8, simple structure, the practicality is strong.

Claims (7)

1. COD digestion reflux device, including last organism (1), its characterized in that: the stirring device is characterized in that a lower machine body (2) is fixedly arranged at the bottom end of the upper machine body (1), a heating plate (3) is fixedly arranged at the bottom end of the lower machine body (2), a stirring assembly (5) is arranged below the heating plate (3), and a fixing mechanism (4) is arranged at the top end of the heating plate (3);

fixed establishment (4) are including fixed plate (401), fixed plate (401) bottom fixed mounting has plug frame (404), slot (407) have been seted up on hot plate (3) top, plug frame (404) are pegged graft in slot (407), plug frame (404) inner wall bottom is connected with pivot (402) through bearing rotation, pivot (402) run through fixed plate (401), just pivot (402) outer wall is connected with fixed plate (401) rotation through bearing two, pivot (402) outer wall fixed cover is equipped with cardboard (403), draw-in groove (405) have been seted up to slot (407) inner wall, cardboard (403) joint is in draw-in groove (405), draw-in groove (405) inner wall fixed mounting has two (408) of grooved pad, two (408) of grooved pad and cardboard (403) outer wall surface in close contact.

2. The COD digestion reflux apparatus of claim 1, wherein: the heating plate (3) top is offered recess (6), standing groove (7) have been offered to recess (6) inner wall bottom, conical flask (8) have been put in standing groove (7), logical groove (9) have been offered on fixed plate (401).

3. The COD digestion reflux apparatus of claim 2, wherein: the conical flask (8) penetrates through the fixing plate (401) through the through groove (9).

4. The COD digestion reflux apparatus of claim 2, wherein: the inner wall of the through groove (9) is fixedly provided with a first groove pad (10), and the first groove pad (10) is tightly contacted with the outer wall surface of the conical flask (8).

5. The COD digestion reflux apparatus of claim 4, wherein: the first groove pad (10) and the second groove pad (408) are made of wear-resistant rubber.

6. The COD digestion reflux apparatus of claim 1, wherein: the top end of the rotating shaft (402) is fixedly provided with a rotating plate (406), and the inserting frame (404) is matched with the inserting groove (407).

7. The COD digestion reflux apparatus of claim 1, wherein: the bottom end of the upper machine body (1) is fixedly provided with a pipe body (11), and the pipe body (11) is communicated with the top end of the conical flask (8) in a contact manner.

Images