COD (Chemical Oxygen Demand) digester

Abstract

The utility model relates to the technical field of detection equipment, and discloses a COD (Chemical Oxygen Demand) digester which comprises a heating base, a side support arranged on one side of the heating base and an upper box body which is suspended above the heating base in a lifting manner through the side support, a digestion bottle is arranged on the heating base, and a condensation pipe is arranged on the upper box body in a penetrating manner; the circulating water cooling structure is connected with the condensation pipe, an upper outlet and a lower outlet which are communicated up and down are formed in the condensation pipe, and the circulating water cooling structure comprises a water tank, a water outlet pipe connected with the water tank and the upper outlet, and a water inlet pipe connected with the water tank and the lower outlet; cooling water enters the condenser pipe through the lower outlet and is discharged into the water tank from the upper outlet to circularly cool the condenser pipe from bottom to top; the problems that the amount of cooling water in an existing condensation pipe is fixed, the cooling effect is poor, and experimental result deviation is likely to be caused are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of testing equipment, specifically to a COD digester. Background Technology

[0002] Chemical Oxygen Demand (COD) is a chemically measured amount of reducing substances in a water sample that require oxidation. It represents the oxygen equivalent of substances (generally organic matter) that can be oxidized by strong oxidants in wastewater, wastewater treatment plant effluent, and polluted water. In studies of river pollution and the properties of industrial wastewater, as well as in the operation and management of wastewater treatment plants, it is an important and relatively quick-to-measure parameter for organic pollution, often represented by the symbol COD.

[0003] Current digesters on the market, such as the intelligent COD digester disclosed in CN218330898U, use glass burr reflux tubes and only perform upper-end water cooling in the condenser. When the room temperature is too high, the amount of water in the condenser is constant, resulting in poor cooling effect and easy to cause large deviations in experimental results. If tap water is used for cooling, it will waste water resources. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a COD digester that overcomes the problem of poor cooling effect due to the fixed cooling water volume in the condenser tube, which easily leads to deviations in experimental results.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] This utility model is a COD digester, comprising: a heating base, a side support disposed on one side of the heating base, and an upper housing that can be raised and lowered above the heating base via the side support. A digestion bottle is disposed on the heating base. A condenser tube is disposed through the upper housing via an elastic support structure. The lower end of the condenser tube is adapted to correspond with the digestion bottle. The device also includes a circulating water cooling structure connected to the condenser tube. The condenser tube has an upper outlet and a lower outlet that communicate with each other. The circulating water cooling structure includes: a water tank, an outlet pipe connecting the water tank to the upper outlet, and an inlet pipe connecting the water tank to the lower outlet. Cooling water enters the condenser tube through the lower outlet and exits into the water tank through the upper outlet to circulate and cool the condenser tube from bottom to top.

[0007] A further improvement is that a pump body structure is also provided between the water inlet pipe and the water tank.

[0008] A further improvement is that the condenser tube consists of an outer condenser tube and an inner condenser tube. The inner condenser tube is fixed inside the outer condenser tube. A steam outlet and a steam inlet are fixedly connected to both ends of the inner condenser tube, respectively. A cooling cavity is provided between the outer condenser tube and the inner condenser tube. The upper outlet and the lower outlet are respectively located on the upper and lower ends of the outer condenser tube and communicate with the cooling cavity.

[0009] A further improvement is that the inner condenser tube is designed as a columnar structure, a spiral structure, or a structure consisting of multiple interconnected arc-shaped spheres.

[0010] Further improvements include: the heating base is provided with an installation groove to fit the digestion bottle, and the heating base is also provided with a heat dissipation window on the side.

[0011] Further improvements include: the upper housing is provided with multiple mounting through holes that are adapted to the condenser tubes; the multiple condenser tubes set in the mounting through holes are connected in series by connecting pipes to circulate and cool the condenser tubes; the upper or lower end or the inner ring of the mounting through holes is provided with an elastic support structure to clamp and fix the outer condenser tube.

[0012] A further improvement is that the upper housing is also provided with an air-cooling structure, which includes a cooling fan located at the rear of the upper housing and air outlets located on both sides of the upper housing.

[0013] A further improvement is that a control display screen is also provided on the front side of the upper housing, and the control display screen is electrically connected to the heating base, the circulating water cooling structure and the air cooling structure.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] By using condenser tubes with upper and lower outlets on the upper chamber, and setting a water tank on one side of the heating base, the water tank is equipped with an inlet pipe connected to the lower outlet and an outlet pipe connected to the upper outlet. Water enters from the lower outlet, fills the cooling cavity, and exits from the upper outlet, thus providing a bottom-to-top flowing circulation cooling of the entire condenser tube. This ensures thorough cooling of the entire condenser tube and carries the exchanged heat out through the flowing water into the water tank for further circulation. The cooling temperature remains constant, saving cooling water resources and greatly improving the cooling effect, thereby enhancing experimental efficiency and accuracy. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a side view of the present invention.

[0018] Figure 3 This is a schematic diagram of the rear side of this utility model.

[0019] Figure 4-6 This is a schematic diagram of the condenser tube of this utility model.

[0020] Attached image labels:

[0021] Heating base 1, mounting slot 11, heat dissipation window 12, side support 2, upper housing 3, mounting through hole 31, control display screen 32, air outlet 33, cooling fan 34, elastic support structure 35, digestion bottle 4, condenser tube 5, upper outlet 51, lower outlet 52, condenser outer tube 53, condenser inner tube 54, cooling cavity 55, steam outlet 56, steam inlet 57, connecting pipe 6, water outlet pipe 7, water inlet pipe 8, water tank 9, pump body structure 91. Detailed Implementation

[0022] To enhance understanding of this utility model, it will be further described in detail below with reference to the accompanying drawings. This embodiment is only used to explain this utility model and does not constitute a limitation on the scope of protection of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the combination or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1-4The diagram shows a COD digester, comprising: a heating base 1, a side support 2 disposed on one side of the heating base 1, and an upper housing 3 suspended above the heating base 1 via the side support 2. A digestion bottle 4 is mounted on the heating base 1. A condenser tube 5 is threaded through the upper housing 3 via an elastic support structure, with the lower end of the condenser tube 5 corresponding to the digestion bottle 4. The condenser tube 5 consists of an outer condenser tube 53 and an inner condenser tube 54. The inner condenser tube 54 is fixed inside the outer condenser tube 53, and both ends of the inner condenser tube 54 are fixedly connected to a steam outlet 56 and a steam inlet 57, respectively. A cooling cavity 55 is provided between the outer condenser tube 53 and the inner condenser tube 54. The upper and lower ends of the outer condenser tube 53 are respectively provided with an upper outlet 51 and a lower outlet 52 communicating with the cooling cavity 55. The device also includes a circulating water cooling structure connected to the condenser tube 5, comprising: a water tank 9. A water outlet pipe 7 connects the water tank 9 to the upper outlet 51, and a water inlet pipe 8 connects the water tank 9 to the lower outlet 52. Cooling water in the water tank 9 enters the condenser pipe 5 through the lower outlet 52 and exits from the upper outlet 51 back into the water tank 9 to circulate and cool the condenser pipe 5 from bottom to top. By using a condenser pipe 5 with upper and lower outlets on the upper housing 3, a water tank 9 is set on one side of the heating base 1. A water inlet pipe 8 connecting the lower outlet 52 and a water outlet pipe 7 connecting the upper outlet 51 are set on the water tank 9. Water enters from the lower outlet 52 and fills the cooling cavity 55, and exits from the upper outlet 52, thereby circulating and cooling the entire condenser inner tube 54 from bottom to top. This circulating water cooling structure fully cools the entire condenser inner tube 54 and carries the exchanged heat out by the flowing water into the water tank for circulation and exchange. The cooling temperature is constant, saving cooling water resources and greatly improving the cooling effect, thereby improving the accuracy of the experimental results.

[0026] An alternative implementation, such as Figure 1 , 2 As shown, a pump body structure 91 is also provided between the water inlet pipe 8 and the water tank 9; the pump body structure can maintain sufficient water supply pressure and water flow speed to ensure sufficient cooling. The pump body structure can be connected to the control system for intelligent control to control the cooling time, thereby improving experimental efficiency and accuracy.

[0027] An alternative implementation, such as Figure 4-6 As shown, the condenser inner tube 54 is configured as a columnar structure, a spiral structure, or a structure of multiple interconnected arc-shaped spheres.

[0028] An alternative implementation, such as Figure 1 As shown, the heating base 1 is provided with an installation groove 11 to fit the digestion bottle 4, and the heating base 1 is also provided with a heat dissipation window 12 on the side.

[0029] An alternative implementation, such as Figure 1As shown, the upper housing 3 is provided with a plurality of mounting through holes 31 adapted to the condenser tubes 5. The plurality of condenser tubes 5 arranged in the mounting through holes 31 are connected to each other in series by connecting pipes 6, so as to provide bottom-to-top or top-to-bottom filling flow circulation cooling for the cooling cavities 55 of the plurality of condenser tubes 5. The upper end, lower end or inner ring of the mounting through hole 31 is provided with an elastic support structure 35 to clamp and support the condenser outer tube 53. The elastic support structure 35 can be set as an annular rubber ring or silicone ring, the outer diameter of which is larger than the mounting through hole 31 and the inner diameter is smaller than the condenser outer tube 53. In use, the condenser outer tube 53 is clamped by elastic wrapping to prevent it from slipping, and at the same time, it plays a role in damping the vibration of the condenser tube 5.

[0030] An alternative implementation, such as Figure 1 , 3 As shown, the upper housing 3 is also equipped with an air-cooling structure, which includes a cooling fan 34 located at the rear of the upper housing 3 and air outlets 33 located on both sides of the upper housing 3. The air-cooling structure, combined with the circulating water-cooling structure, provides more thorough and complete cooling.

[0031] An alternative implementation, such as Figure 1 As shown, the upper housing 3 is also provided with a control display screen 32 on the front side, and the control display screen 32 is electrically connected to the heating base 1, the circulating water cooling structure and the air cooling structure.

[0032] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A COD digester, comprising: The heating base (1), the side support (2) set on one side of the heating base (1), and the upper box (3) which can be raised and lowered above the heating base (1) through the side support (2) are provided. The heating base (1) is provided with a digestion bottle (4). The upper box (3) is provided with a condenser tube (5) through an elastic support structure (35). The lower end of the condenser tube (5) is adapted to correspond to the digestion bottle (4). The feature is that it also includes a circulating water cooling structure connected to the condenser tube (5). The condenser tube (5) is provided with an upper outlet (51) and a lower outlet (52) that are connected vertically. The circulating water cooling structure includes a water tank (9), a water outlet pipe (7) connecting the water tank (9) and the upper outlet (51), and a water inlet pipe (8) connecting the water tank (9) and the lower outlet (52). Cooling water enters the condenser tube (5) through the lower outlet (52) and is discharged into the water tank (9) from the upper outlet (51) to circulate and cool the condenser tube (5) from bottom to top.

2. The COD digester according to claim 1, characterized in that: A pump body structure (91) is also provided between the water inlet pipe (8) and the water tank (9).

3. The COD digester according to claim 1, characterized in that: The condenser tube (5) consists of an outer condenser tube (53) and an inner condenser tube (54). The inner condenser tube (54) is fixed inside the outer condenser tube (53). The two ends of the inner condenser tube (54) are respectively fixedly connected to a steam outlet (56) and a steam inlet (57). A cooling cavity (55) is provided between the outer condenser tube (53) and the inner condenser tube (54). The upper outlet (51) and the lower outlet (52) are respectively provided on the upper and lower ends of the outer condenser tube (53) and communicate with the cooling cavity (55).

4. The COD digester according to claim 3, characterized in that: The condenser inner tube (54) is configured as a columnar structure, a spiral structure, or a structure of multiple arc-shaped spheres connected together.

5. The COD digester according to claim 1, characterized in that: The heating base (1) is provided with an installation groove (11) to fit the digestion bottle (4), and the heating base (1) is also provided with a heat dissipation window (12) on the side.

6. The COD digester according to any one of claims 1-5, characterized in that: The upper housing (3) is provided with a plurality of mounting through holes (31) adapted to the condenser tubes (5). The plurality of condenser tubes (5) set in the mounting through holes (31) are connected to each other through connecting pipes (6) to circulate and cool the condenser tubes (5). The upper end, lower end or inner ring of the mounting through hole (31) is provided with an elastic support structure (35) to clamp and fix the condenser tube (53).

7. The COD digester according to claim 6, characterized in that: The upper housing (3) is also provided with an air-cooling structure, which includes: a cooling fan (34) located on the rear side of the upper housing (3) and air outlets (33) located on both sides of the upper housing (3).

8. The COD digester according to claim 6, characterized in that: The upper housing (3) is also provided with a control display screen (32) on the front side. The control display screen (32) is electrically connected to the heating base (1), the circulating water cooling structure and the air cooling structure.

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