Backflow digestion instrument

Abstract

The utility model discloses a reflux digestion instrument, relates to detection equipment technical field, including support, conical flask, condenser pipe and rotary heating device, the rotary heating device includes rotary base, heating unit and bearing frame, the rotary base is rotatingly connected with the lower end of the support around the vertical axis, the heating unit is equipped with the bearing frame, and the bearing frame is equipped with the conical flask. A plurality of heating units are arranged on the rotating base in the circumferential direction, one conical flask is placed above each heating unit, one condensation pipe is connected to each conical flask, the bearing frame is fixed to the rotating base, and the bearing frame is fixed to the rotating base. The outer side of the upper end of the bearing frame is provided with bearing cavities used for bearing the condensation pipes in the circumferential direction, and the sides, away from the center of the bearing frame, of the bearing cavities are provided with taking and placing notches. The reflux digestion instrument provided by the utility model can reduce energy loss, meets the requirements of energy conservation and emission reduction, is uniform in heating, is convenient to observe, and is convenient for taking and placing the condenser pipe.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a reflux digester. Background Technology

[0002] Chemical oxygen demand (COD) is a measure of the equivalent amount of organic matter in water that can be chemically oxidized, expressed in mg / L. COD reflects the degree of pollution in water by reducing substances, including organic matter, nitrite nitrogen, ferrous salts, and sulfides. Organic pollution of water bodies is widespread; therefore, COD is also one of the indicators of the relative content of organic matter in water (the degree of water pollution). Current COD digestion and reflux devices are experimental auxiliary tools designed based on the digestion requirements for COD in the standard "HJ828-2017 Determination of Chemical Oxygen Demand in Water - Dichromate Method".

[0003] The traditional COD reflux digester mainly consists of four parts: the main body, the reflux tube, the fan, and the heating plate. It uses microcomputer technology to time and control the heating plate and fan, allowing simultaneous heating of six or more conical flask reflux devices. The cooling section is primarily achieved through a burr-shaped condenser and a fan. The upper part of the condenser is spherical, where the catalyst is added, preventing the instantaneous volatilization of light components in the sample. The lower part is burr-shaped, with three opposing "cold bubbles" extending from the condenser wall on a single plane, increasing the cooling area compared to a simple spherical condenser and blocking the passage of volatile substances and vapors. Combined with the cooling water inside the upper spherical reflux tube and the internal fan, this ensures effective reflux cooling of the sample.

[0004] However, existing reflux digestion apparatuses typically heat a single heating plate, resulting in significant energy loss and failing to meet energy conservation and emission reduction requirements. Furthermore, uneven heating can occur during the process. The existing digestion apparatuses are generally arranged in a square shape, with the condensers and conical flasks at the front obstructing the view of those at the back, making observation difficult. After the experiment, cleaning and removing the condensers requires pulling them upwards, which is cumbersome, especially for shorter individuals. Utility Model Content

[0005] The purpose of this invention is to provide a reflux digester to solve the problems existing in the prior art, reduce energy loss, meet the requirements of energy conservation and emission reduction, provide uniform heating, facilitate observation, and make it easy to remove and place the condenser tube.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a reflux digester, including a support, a conical flask, a condenser tube, and a rotary heating device. The rotary heating device includes a rotating base, heating units, and a support frame. The rotating base is rotatably connected to the lower end of the support about a vertical axis. Multiple heating units are arranged on the rotating base along the circumferential direction. A conical flask is placed above each heating unit, and a condenser tube is connected to each conical flask. The support frame is fixed to the rotating base. The upper outer side of the support frame is provided with support cavities along the circumferential direction for supporting each condenser tube. A pick-and-place notch is provided on the side of the support cavity away from the center of the support frame.

[0008] In one embodiment, the rotary heating device further includes a protective panel covering each of the heating units. The protective panel is provided with a plurality of cup-holding areas corresponding to each of the heating units, and each cup-holding area holds one of the conical flasks.

[0009] In one embodiment, the protective panel is a black crystal panel.

[0010] In one embodiment, a control board is also included, which is fixedly mounted on the bracket, and each of the heating units is electrically connected to the control board.

[0011] In one embodiment, the upper middle part of the support frame is provided with an installation cavity, a cooling fan is installed in the installation cavity, and cooling through holes are provided on the cavity wall of the installation cavity at positions opposite to each of the condenser tubes.

[0012] In one embodiment, a base plate is fixedly provided at the bottom of the bracket, and ventilation holes are provided on the base plate.

[0013] In one embodiment, the lower end of the bracket is fixedly provided with a protective ring surrounding the rotating base, and the protective ring is provided with heat dissipation holes.

[0014] In one embodiment, the upper end of the bracket is provided with a protective sleeve, which surrounds each of the condenser tubes on the inner side. The protective sleeve is provided with a protective sleeve notch for the condenser tubes to pass through laterally.

[0015] In one embodiment, the sidewall of the supporting cavity is provided with heat dissipation holes.

[0016] In one embodiment, a display operation panel is further included, which is electrically connected to the control board.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] The reflux digester provided by this utility model includes a support, a conical flask, a condenser, and a rotary heating device. The rotary heating device includes a rotating base, heating units, and a support frame. The rotating base is rotatably connected to the lower end of the support about a vertical axis. Multiple heating units are arranged circumferentially on the rotating base. A conical flask is placed above each heating unit, and a condenser is connected to each conical flask. The support frame is fixed to the rotating base. The upper outer side of the support frame has circumferentially arranged support cavities for supporting each condenser. A notch for removing and placing is provided on the side of the support cavity away from the center of the support frame. This utility model, by setting a rotatable rotating base and arranging multiple heating units circumferentially on the rotating base, achieves a reflux digester that can rotate... The rotating base allows each conical flask and condenser tube to be rotated to the front for easy observation. Each heating unit has a conical flask placed above it, allowing for individual control of each unit to heat the corresponding flask, reducing energy loss and meeting energy conservation and emission reduction requirements. This also results in more uniform heating and better heating performance. A pick-and-place notch is provided on the side of the support cavity away from the center of the support frame. When removing the condenser tube, simply lift it slightly to allow the thicker upper part to detach from the support cavity, then move the tube laterally through the notch. It is not necessary to completely pull the tube upwards; instead, it can be placed back on the support cavity, making the process very convenient. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the reflux digester in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the reflux digester from another perspective in an embodiment of the present invention;

[0022] Figure 3 This is a top view of the reflux digester in an embodiment of the present invention;

[0023] Figure 4 for Figure 3 Sectional view of AA.

[0024] In the diagram: 1-Bracket, 2-Conical flask, 3-Condenser tube, 4-Rotating base, 5-Heating unit, 6-Bearing frame, 7-Supporting cavity, 8-Placement notch, 9-Protective panel, 10-Cup placement area, 11-Mounting cavity, 12-Cooling fan, 13-Cooling through hole, 14-Base plate, 15-Ventilation hole, 16-Guard ring, 17-Heat dissipation hole, 18-Protective sleeve, 19-Protective sleeve notch, 20-Heat dissipation through hole, 21-Display and operation panel, 22-Support leg. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The purpose of this invention is to provide a reflux digester to solve the problems existing in the prior art, reduce energy loss, meet the requirements of energy conservation and emission reduction, provide uniform heating, facilitate observation, and make it easy to remove and place the condenser tube.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1-4 As shown, this embodiment provides a reflux digester, including a support 1, a conical flask 2, a condenser tube 3, and a rotary heating device. The rotary heating device includes a rotating base 4, a heating unit 5, and a support frame 6. The rotating base 4 is rotatably connected to the lower end of the support 1 around a vertical axis. Multiple heating units 5 are arranged on the rotating base 4 along the circumferential direction. A conical flask 2 is placed above each heating unit 5, and a condenser tube 3 is connected to each conical flask 2. The support frame 6 is fixed on the rotating base 4. The upper outer side of the support frame 6 is provided with a support cavity 7 along the circumferential direction for supporting each condenser tube 3. The support cavity 7 is provided with a pick-and-place notch 8 on the side away from the center of the support frame 6.

[0029] During use, rotating the base 4 allows each conical flask 2 and condenser tube 3 to be rotated to the front, facilitating observation of the slight boiling state of the liquid in the conical flask 2. Each heating unit 5 has a conical flask placed above it, allowing for individual control of each heating unit 5 to heat the corresponding conical flask 2 according to usage requirements. Compared to the traditional method of heating a single heating plate, this reduces energy loss, meets energy conservation and emission reduction needs, and provides more uniform heating of the conical flask 2 with better heating effect. By providing a pick-and-place notch 8 on the side of the support cavity 7 away from the center of the support frame 6, when removing the condenser tube 3, simply lift the condenser tube 3 slightly to allow the thicker upper part of the condenser tube 3 to detach from the support cavity 7, then move the condenser tube 3 laterally and remove it through the pick-and-place notch 8. It is not necessary to completely pull the condenser tube 3 upwards; instead, it can be supported on the support cavity 7, making the pick-and-place process very convenient.

[0030] In this embodiment, the rotary heating device also includes a protective panel 9, which covers each heating unit 5. The protective panel 9 is provided with multiple cup-holding areas 10 corresponding to each heating unit 5, and a conical flask 2 is placed on each cup-holding area 10. The protective panel can effectively protect the heating unit 5, preventing concentrated acid in the liquid from contacting and corroding the heating unit 5, and improving the service life of the device.

[0031] In this embodiment, the protective panel 9 is a black crystal panel, which is not only resistant to high temperatures but also easy to clean.

[0032] In this embodiment, a control board is also included. The control board is fixedly mounted on the bracket 1, and each heating unit 5 is electrically connected to the control board. The control board can control the heating temperature and heating time of each heating unit 5 individually, resulting in a high degree of intelligence.

[0033] In this embodiment, the upper middle part of the support frame 6 is provided with an installation cavity 11, and a cooling fan 12 is installed in the installation cavity 11. Cooling through holes 13 are provided on the cavity wall of the installation cavity 11 at positions opposite to each condenser tube 3. The cooling fan 12 and the cooling through holes 13 facilitate the cooling and temperature reduction of each condenser tube 3.

[0034] In this embodiment, a base plate 14 is fixedly provided at the bottom of the bracket 1. The base plate 14 has ventilation holes 15 and support legs 22 are installed at the bottom of the base plate 14. A protective ring 16 is fixedly provided at the lower end of the bracket 1, surrounding the rotating base 4. The protective ring 16 has heat dissipation holes 17. The protective ring 16 and the base plate 14 can isolate the inner heating unit 5, forming a protective barrier. The ventilation holes 15 and heat dissipation holes 17 allow air to circulate inside and outside the protective ring 16, improving the heat dissipation effect and preventing the protective ring 16 and the base plate 14 from overheating.

[0035] In this embodiment, the upper end of the bracket 1 is provided with a protective sleeve 18, which surrounds each condenser tube 3 on its inner side. The protective sleeve 18 is provided with a protective sleeve notch 19, which is used for the lateral passage of the condenser tube 3. The protective sleeve 18 can protect the condenser tube 3 and prevent it from being damaged by external impacts. The notch 19 facilitates the lateral entry and exit of the condenser tube 3 into and out of the protective sleeve 18 when it is being put in or taken out.

[0036] In this embodiment, heat dissipation holes 20 are provided on the side wall of the supporting cavity 7 to improve the heat dissipation effect of the condenser tube 3.

[0037] In this embodiment, a display operation panel 21 is also included, which is electrically connected to the control board. Commands can be issued through the display operation panel 21 to achieve independent temperature control of multiple channels.

[0038] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A reflux digester, characterized in that: The device includes a support, a conical flask, a condenser tube, and a rotary heating device. The rotary heating device includes a rotating base, heating units, and a support frame. The rotating base is rotatably connected to the lower end of the support about a vertical axis. Multiple heating units are arranged on the rotating base along the circumferential direction. A conical flask is placed above each heating unit, and a condenser tube is connected to each conical flask. The support frame is fixed to the rotating base. The upper outer side of the support frame is provided with support cavities along the circumferential direction for supporting each condenser tube. A notch for taking out and putting in the support cavity is provided on the side away from the center of the support frame.

2. The reflux digester according to claim 1, characterized in that: The rotary heating device also includes a protective panel that covers each of the heating units. The protective panel has multiple cup-holding areas that correspond one-to-one with each of the heating units, and each cup-holding area holds one of the conical flasks.

3. The reflux digester according to claim 2, characterized in that: The protective panel is a black crystal panel.

4. The reflux digester according to claim 1, characterized in that: It also includes a control board, which is fixedly mounted on the bracket, and each of the heating units is electrically connected to the control board.

5. The reflux digester according to claim 1, characterized in that: The upper middle part of the support frame is provided with an installation cavity, and a cooling fan is installed in the installation cavity. Cooling through holes are provided on the cavity wall of the installation cavity at positions opposite to each of the condenser tubes.

6. The reflux digester according to claim 1, characterized in that: The bottom of the bracket is fixedly provided with a base plate, and the base plate is provided with ventilation holes.

7. The reflux digester according to claim 1, characterized in that: The lower end of the bracket is fixedly provided with a protective ring surrounding the rotating base, and the protective ring is provided with heat dissipation holes.

8. The reflux digester according to claim 1, characterized in that: The upper end of the bracket is provided with a protective sleeve, which surrounds each of the condenser tubes on the inside. The protective sleeve has a protective sleeve notch for the condenser tubes to pass through laterally.

9. The reflux digester according to claim 1, characterized in that: The side wall of the supporting cavity is provided with heat dissipation holes.

10. The reflux digester according to claim 4, characterized in that: It also includes a display operation panel, which is electrically connected to the control board.

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