Temperature control device for COD (Chemical Oxygen Demand) digestion

Abstract

The utility model relates to a temperature control device for COD (Chemical Oxygen Demand) digestion. The digestion device comprises a mounting shell with a rectangular hole, a digestion pipe arranged in the rectangular hole of the mounting shell, a liquid inlet and a liquid outlet which are formed in the middle parts of the top surface and the bottom surface of the mounting shell, two groups of heat dissipation assemblies arranged on two sides of the digestion pipe in a sliding manner, two groups of heating assemblies arranged on the other two sides of the digestion pipe in a sliding manner, and a driving assembly arranged on one side of the mounting shell, the connecting ends of the connecting rod assemblies are hinged to the bottoms of the two heat dissipation assemblies and the bottoms of the two heating assemblies respectively, and the detection assemblies are arranged on the outer walls of the two sides of the installation shell. The driving assembly can drive the other heating assemblies and the heat dissipation assembly to move through the connecting rod assembly when driving one group of heating assemblies to move towards the digestion pipe; through cooperation of the connecting rod assembly and the driving assembly, the heating assembly and the heat dissipation assembly can be driven to slide at the same time to be attached to the digestion pipe for heating or heat dissipation, the heating speed and the heat dissipation speed are effectively increased, only one driving assembly is needed, and cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of acceleration, and specifically refers to a temperature control device for COD digestion. Background Technology

[0002] COD, or Chemical Oxygen Demand, refers to the amount of oxidant consumed to oxidize reducing substances in 1 liter of water sample. It is converted into the number of milligrams of oxygen required to completely oxidize each liter of water sample. It reflects the degree of pollution in water by reducing substances, and therefore, the determination of COD in water is one of the important comprehensive indicators for assessing water pollution.

[0003] Existing online COD analyzers typically require several steps for water quality analysis, including sampling, mixing, digestion, and measurement. During the measurement process, in order for the testing agency to accurately obtain the detection sensor signal, the digested water sample needs to be cooled rapidly and effectively to reach room temperature to ensure accurate and effective data during testing. The traditional cooling method is natural cooling, which is not only inefficient in terms of heat dissipation, but also requires the heating element to remain in contact with the digestion tube. After the heating element generates heat, its residual heat continues to keep the digestion tube warm, preventing the water sample inside the digestion tube from cooling down quickly and hindering efficient water sample detection.

[0004] Existing technology 202121229946.7 discloses a COD digestion and cooling device. It uses an electric telescopic rod to drive the insulation shell and heating tube to extend and retract in coordination, which can make the insulation shell and electric heating tube separate from or adhere to the digestion tube. The cooling fan can effectively improve the cooling speed of the water sample, thus better meeting the needs of efficient and rapid detection. However, its cooling fan is set on both sides of the bottom of the assembly shell, which is a certain distance from the heating position of the digestion tube. When cooling, the air can only cool down two sides of the digestion tube quickly, and the cooling efficiency of the other two sides is low. In addition, multiple electric telescopic rods are set, which increases the cost. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a temperature control device for COD digestion.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a temperature control device for COD digestion, comprising a rectangular mounting shell with a rectangular hole in the middle, a digestion tube vertically disposed within the rectangular hole of the mounting shell, an inlet and an outlet respectively disposed at the center of the top and bottom surfaces of the mounting shell and communicating with the top and bottom surfaces of the digestion tube, two sets of heat dissipation components slidably disposed on both sides of the digestion tube with one side facing the two openings of the rectangular hole of the mounting shell and able to fit against the digestion tube for heat dissipation, and slidably disposed on the other two sides of the digestion tube and fitted against the digestion tube for heating the digestion tube. The device includes two sets of heating components, two clearance openings on the outer walls of both sides of the mounting housing for sliding the two sets of heating components, a drive component located at one of the clearance openings for driving one set of heating components to slide, a connecting rod assembly with its connecting ends hinged to the bottom of the two sets of heat dissipation components and the two sets of heating components, and a detection component located on the outer walls of both sides of the mounting housing for detecting the liquid in the digestion tube; when the drive component drives one set of heating components to move towards the digestion tube, it can drive the two sets of heat dissipation components away from the digestion tube and drive the other set of heating components to move towards the digestion tube through the connecting rod assembly.

[0007] Preferably, the linkage assembly includes four sliding grooves disposed at the bottom of the mounting housing and directly below the two sets of heat dissipation components and the two sets of heating components, and positioned towards the digestion tube; four drive rods with one end respectively disposed at the bottom of the two sets of heat dissipation components and the two sets of heating components, and the other end extending into the sliding grooves; eight limiting grooves respectively disposed on the inner walls of both sides of the four sliding grooves; and four limiting plates disposed on the ends of the four drive rods located in the sliding grooves, with both ends extending into the limiting grooves; connecting plates are disposed between adjacent sets of the two sets of heat dissipation components and the two sets of heating components; the two ends of the four connecting plates are respectively rotatably sleeved on the drive rods at one set of heat dissipation components and one set of heating components; and the four connecting plates form a parallelogram shape with each other.

[0008] Preferably, both sets of heat dissipation components include a drive housing slidably disposed at the bottom of the mounting housing, an arc-shaped groove disposed on the side of the drive housing facing the digestion tube and in contact with the digestion tube, an arc-shaped air duct disposed in the middle of the arc-shaped groove, a fan slot disposed on the side of the mounting housing away from the digestion tube and communicating with the arc-shaped air duct, and a heat dissipation fan disposed in the fan slot for heat dissipation.

[0009] Preferably, the detection component includes a light source emitter disposed on one outer wall of the mounting housing and a light source receiver disposed on the other outer wall of the mounting housing for receiving light sources.

[0010] Preferably, both sets of heating components include a heating shell that is slidably disposed at the bottom of the mounting shell, an arc-shaped groove disposed on the side of the heating shell facing the digestion tube and fitting against the digestion tube, and a heating tube disposed in the arc-shaped groove for heating.

[0011] Preferably, the drive assembly includes a protective shell disposed on the outer wall of one side of the mounting housing and located at the clearance opening; an electric telescopic rod disposed inside the protective shell with its telescopic end facing one of the heating shells; a mounting plate disposed on the telescopic end of the electric telescopic rod; two telescopic rods, one end of which is respectively connected to the two sides of the side of one of the heating shells away from the digestion tube and the other end of which passes through the mounting plate; two limiting blocks disposed on the ends of the two telescopic rods that pass through the mounting plate; and two springs respectively sleeved on the section of the two telescopic rods located between the mounting plate and the heating shell.

[0012] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0013] This invention, through the cooperation of a connecting rod assembly and a drive assembly, can simultaneously drive the heating and heat dissipation assemblies to slide and fit against the digestion tube for heating or heat dissipation, effectively improving the heating and heat dissipation speed. Moreover, it only requires one set of drive assemblies, reducing costs. Attached Figure Description

[0014] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0015] Appendix Figure 1 This is a partial cross-sectional view of the front of the temperature control device for COD digestion described in this utility model.

[0016] Appendix Figure 2 This is a top view cross-sectional structural diagram of the COD digestion temperature control device of the present invention in its heating state;

[0017] Appendix Figure 3 This is a top view cross-sectional structural diagram of the temperature control device for COD digestion described in this utility model, showing its heat dissipation state.

[0018] The components are as follows: 1. Mounting shell; 2. Dissolving tube; 3. Liquid inlet; 4. Liquid outlet; 5. Heat dissipation assembly; 51. Drive shell; 52. First arc-shaped groove; 53. Arc-shaped air groove; 54. Fan groove; 55. Cooling fan; 6. Heating assembly; 61. Heating shell; 62. Second arc-shaped groove; 63. Heating tube; 7. Clearance opening; 8. Drive assembly; 81. Protective shell; 82. Electric telescopic rod; 83. Mounting plate; 84. Telescopic rod; 85. Limiting block; 86. Spring; 9. Linkage assembly; 91. Slide groove; 92. Drive rod; 93. Limiting groove; 94. Limiting plate; 95. Connecting plate; 10. Detection assembly; 101. Light source emitter; 102. Light source receiver. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Appendix Figure 1-3The COD digestion temperature control device of this utility model includes a rectangular mounting shell 1 with a rectangular hole in the middle, a digestion tube 2 vertically disposed in the rectangular hole of the mounting shell 1, an inlet 3 and an outlet 4 respectively disposed in the middle of the top and bottom surfaces of the mounting shell 1 and respectively communicating with the top and bottom surfaces of the digestion tube 2, two sets of heat dissipation components 5 slidably disposed on both sides of the digestion tube 2 with one side facing the rectangular hole of the mounting shell 1 and able to fit against the digestion tube 2 for heat dissipation, two sets of heating components 6 slidably disposed on the other two sides of the digestion tube 2 and fit against the digestion tube 2 for heating, and two clearance openings 7 respectively disposed on the outer walls of both sides of the mounting shell 1 for sliding of the two sets of heating components 6. The mounting housing 1 includes a drive assembly 8 for sliding one set of heating components 6, a connecting rod assembly 9 with its connecting ends hinged to the bottoms of the two sets of heat dissipation components 5 and the two sets of heating components 6, and a detection assembly 10 disposed on the outer walls of both sides of the mounting housing 1 for detecting the liquid in the digestion tube 2. When the drive assembly 8 moves one set of heating components 6 toward the digestion tube 2, it can use the connecting rod assembly 9 to move the two sets of heat dissipation components 5 away from the digestion tube 2 and move the other set of heating components 6 toward the digestion tube 2. The connecting rod assembly 9 includes four sliding grooves 91 disposed at the bottom of the mounting housing 1, located directly below the two sets of heat dissipation components 5 and the two sets of heating components 6, and positioned toward the digestion tube 2. One end of each groove is disposed on the bottom of the two sets of heat dissipation components 5 and the two sets of heating components 6. The heat dissipation assembly 6 has four drive rods 92 extending from the bottom and the other end into the slide groove 91; eight limiting grooves 93 respectively set on the inner walls of the four slide grooves 91 on both sides; and four limiting plates 94 set on the four drive rods 92 at one end in the slide groove 91 and extending to the limiting grooves 93 at both ends. Connecting plates 95 are provided between adjacent heat dissipation assemblies 5 and heating assemblies 6. The two ends of the four connecting plates 95 are rotatably sleeved on the drive rods 92 at one of the heat dissipation assemblies 5 and one of the heating assemblies 6. The four connecting plates 95 form a parallelogram shape. Both heat dissipation assemblies 5 include a drive shell 51 slidably set at the bottom of the mounting shell 1, and a drive shell 51 positioned directly opposite the digestion tube 2. The mounting housing 1 has a first arc-shaped groove 52 that fits against the digestion tube 2, an arc-shaped air groove 53 located in the middle of the first arc-shaped groove 52, a fan groove 54 located inside the mounting housing 1 away from the digestion tube 2 and connected to the arc-shaped air groove 53, and a cooling fan 55 located inside the fan groove 54 for heat dissipation; the detection assembly 10 includes a light source emitter 101 located on one side of the outer wall of the mounting housing 1 and a light source receiver 102 located on the other side of the outer wall of the mounting housing 1 for receiving light; both sets of heating assemblies 6 each include a heating shell 61 slidably located at the bottom inside the mounting housing 1, a second arc-shaped groove 62 located on the side of the heating shell 61 facing the digestion tube 2 and fitting against the digestion tube 2, and a heating tube 63 located inside the second arc-shaped groove 62 for heating;The drive assembly 8 includes a protective shell 81 disposed on one side of the outer wall of the mounting shell 1 and located at the clearance opening 7; an electric telescopic rod 82 disposed inside the protective shell 81 with its telescopic end facing one of the heating shells 61; a mounting plate 83 disposed on the telescopic end of the electric telescopic rod 82; two telescopic rods 84, one end of which is connected to both sides of the side of one of the heating shells 61 away from the digestion tube 2 and the other end of which passes through the mounting plate 83; two limiting blocks 85 disposed on one end of the two telescopic rods 84 passing through the mounting plate 83; and two springs 86 respectively sleeved on the section of the two telescopic rods 84 located between the mounting plate 83 and the heating shell 61.

[0021] In use: When testing the extracted water sample using the COD online analyzer, the water sample and the detection solvent are injected into the digestion tube 2 through the inlet tube. Then, the electric telescopic rod 82 is activated, which moves the mounting plate 83. The mounting plate 83 compresses the spring 86, pushing the heating shell 61 towards the digestion tube 2. The heating shell 61 drives the drive rod 92 to move within the slide groove 91. Then, the drive rod 92 drives one end of the two connecting plates 95 towards the digestion tube 2. Immediately, the other end of the two connecting plates 95 drives the drive rod 92 at the bottom of the drive shell 51 away from the digestion tube 2. As soon as the sample moves, the drive housing 51 moves accordingly. The drive rods 92 at the bottom of the two drive housings 51 then drive the other two connecting plates 95 to move. The other ends of the connecting plates 95 then drive the drive rod 92 at the bottom of another heating housing 61 to move towards the digestion tube 2. Then, the other heating housing 61 also moves accordingly. The two heating housings 61 then drive the heating tube 63 to move towards the digestion tube 2. Once the heating tube 63 is in contact with the surface of the digestion tube 2, electricity is applied to the heating tube 63 to heat the digestion tube 2. After the water sample digestion is complete, the heating... Heating in tube 63 stops, then the electric telescopic rod 82 resets. The electric telescopic rod 82 then moves the heating shell 61 away from the digestion tube 2. The drive rod 92 moves one end of each of the two connecting plates 95 away from the digestion tube 2. The other end of each connecting plate 95 then moves the drive rod 92 at the bottom of the drive shell 51 towards the digestion tube 2. Then, one end of each of the other two connecting plates 95 moves towards the digestion tube 2, following the drive rod 92 at the bottom of the drive shell 51. The other end of each connecting plate 95 then moves the drive rod 92 at the bottom of the other heating shell 61. Moving away from the digestion tube 2, another heating shell 61 follows. Once the drive shell 51 is in contact with the digestion tube 2, the cooling fan 55 is activated. The cooling fan 55 then dissipates heat from the digestion tube 2 at close range and drives the airflow to move towards both sides of the digestion tube 2 through the arc-shaped air duct 53, thereby dissipating heat from both sides of the digestion tube 2 and effectively improving the heat dissipation effect. It should be noted that when the length of the four connecting plates 95 drives the two drive shells 51 and the heating shell 61 to move alternately, the two drive shells 51 and the heating shell 61 will not collide with each other.

[0022] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. A temperature control device for COD digestion, characterized in that: The device includes a rectangular mounting shell with a rectangular hole in the center; a digestion tube vertically disposed within the rectangular hole of the mounting shell; an inlet and an outlet respectively disposed at the center of the top and bottom surfaces of the mounting shell and communicating with the top and bottom surfaces of the digestion tube; two sets of heat dissipation components slidably disposed on both sides of the digestion tube, with one side facing the two openings of the rectangular hole of the mounting shell and able to fit against the digestion tube for heat dissipation; two sets of heating components slidably disposed on the other two sides of the digestion tube and fit against the digestion tube for heating; two clearance openings respectively disposed on the outer walls of both sides of the mounting shell for sliding the two sets of heating components; a drive component disposed at one of the clearance openings for driving one set of heating components to slide; a connecting rod assembly with its connecting ends hinged to the bottom of the two sets of heat dissipation components and the two sets of heating components; and a detection component disposed on the outer walls of both sides of the mounting shell for detecting the liquid inside the digestion tube; when the drive component drives one set of heating components to move towards the digestion tube, it can drive the two sets of heat dissipation components away from the digestion tube and drive the other set of heating components to move towards the digestion tube through the connecting rod assembly.

2. The temperature control device for COD digestion according to claim 1, characterized in that: The linkage assembly includes four sliding grooves located at the bottom of the mounting housing, directly below the two sets of heat dissipation components and the two sets of heating components, and facing the digestion tube; four drive rods with one end respectively located at the bottom of the two sets of heat dissipation components and the two sets of heating components, and the other end extending into the sliding grooves; eight limiting grooves respectively located on the inner walls of the four sliding grooves; and four limiting plates located on the four drive rods at one end within the sliding grooves, with both ends extending into the limiting grooves; connecting plates are provided between adjacent sets of the two sets of heat dissipation components and the two sets of heating components; the two ends of the four connecting plates are rotatably sleeved on the drive rods at one set of heat dissipation components and one set of heating components; the four connecting plates form a parallelogram shape with each other.

3. The temperature control device for COD digestion according to claim 1, characterized in that: Both sets of heat dissipation components include a drive housing that is slidably disposed at the bottom of the mounting housing, an arc-shaped groove disposed on the side of the drive housing facing the digestion tube and in contact with the digestion tube, an arc-shaped air duct disposed in the middle of the arc-shaped groove, a fan slot disposed on the side of the mounting housing away from the digestion tube and communicating with the arc-shaped air duct, and a heat dissipation fan disposed in the fan slot for heat dissipation.

4. The temperature control device for COD digestion according to claim 1, characterized in that: The detection assembly includes a light source emitter disposed on one outer wall of the mounting housing and a light source receiver disposed on the other outer wall of the mounting housing for receiving light sources.

5. The temperature control device for COD digestion according to claim 1, characterized in that: Both sets of heating components include a heating shell that is slidably disposed at the bottom of the mounting housing, an arc-shaped groove disposed on the side of the heating shell facing the digestion tube and fitting against the digestion tube, and a heating tube disposed in the arc-shaped groove for heating.

6. The temperature control device for COD digestion according to claim 1, characterized in that: The drive assembly includes a protective shell disposed on the outer wall of one side of the mounting housing and located at the clearance opening; an electric telescopic rod disposed inside the protective shell with its telescopic end facing one of the heating shells; a mounting plate disposed on the telescopic end of the electric telescopic rod; two telescopic rods, one end of which is connected to the two sides of one of the heating shells away from the digestion tube and the other end of which passes through the mounting plate; two limiting blocks disposed on the ends of the two telescopic rods that pass through the mounting plate; and two springs respectively sleeved on the section of the two telescopic rods located between the mounting plate and the heating shell.

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