A digestion tube convenient for cleaning

Abstract

The utility model is suitable for water quality detection equipment field provides a kind of digestion tube convenient to wash, including digestion bottle, the body of digestion bottle is cylindrical structure, the bottom of digestion bottle one side is equipped with flush port, flush port and digestion bottle are integral type connection, the outside of flush port is detachably connected with sealing sleeve, flush port is equipped with several annular clamping grooves;The detachable connection of the top of digestion bottle has cover body, the cover body can be deformed under artificial pressing.

Description

Technical Field

[0001] This invention relates to the field of water quality testing equipment and provides a digestion tube that is easy to clean. Background Technology

[0002] In the determination of chemical oxygen demand (COD) using the dichromate method, highly toxic and corrosive solutions such as mercuric sulfate, silver sulfate, and concentrated sulfuric acid are added to the digestion tube through the inlet. Currently, most instruments of this type use a motor to directly rotate a certain number of steps to align the inlet. However, if the motor torque is insufficient or the movement is interfered with, the motor may miss steps, causing the inlet to misalign. This results in the inaccurate addition of highly toxic and corrosive solutions to the instrument.

[0003] At the same time, after completing the testing task, it is necessary to remove the sample residue or chemical reaction products remaining inside the digestion tube. However, the digestion tube is usually small in size and is not easy to rinse and clean after the test is completed, which causes inconvenience to the laboratory personnel. Utility Model Content

[0004] To address the aforementioned deficiencies, the present invention aims to provide a digestion tube that is easy to clean, thereby solving the problems mentioned in the background art. The device includes a digestion bottle, the body of which is cylindrical. A rinsing port is provided on one side of the bottom of the digestion bottle, and the rinsing port is integrally connected to the digestion bottle. A sealing sleeve is detachably connected to the outside of the rinsing port, and the rinsing port is provided with several annular snap-fit ​​grooves. A cap is detachably connected to the top of the digestion bottle, and the cap can be deformed under manual pressure.

[0005] Furthermore, the snap-fit ​​groove is inverted.

[0006] Furthermore, the digestion bottle is equipped with a retaining ring.

[0007] Furthermore, the digestion bottle has a funnel-shaped opening at its top, and the cap is placed over the top of the funnel-shaped opening.

[0008] Furthermore, the bottom edge of the cap is provided with a snap ring that matches the upper edge of the funnel mouth, and the snap ring can wrap around the upper edge of the funnel mouth.

[0009] Furthermore, the bottom of the cap is provided with a stopper ring that matches the inner edge of the top of the funnel bottle opening.

[0010] Furthermore, taking the bottom plane of the digestion bottle as the reference plane, with the connection end of the rinsing port and the digestion bottle facing downwards, draw intersecting lines along the vertical direction and the length direction of the rinsing port. The acute angle between the two extension lines is α, then α = 24°.

[0011] This invention enables the temporary preservation of residual digestion solution through a rinsing port at the bottom of the digestion bottle and a removable sealing sleeve. At the same time, it utilizes an external rinsing device connected to the rinsing port, combined with its special water flow inlet angle, to achieve efficient rinsing of the digestion bottle, greatly improving the cleaning efficiency and convenience of the digestion tube, reducing the interference of residual liquid on subsequent experiments, and has good practicality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the digestion tube structure;

[0013] Figure 2 This is a schematic diagram of the structure of the digester tube with cap.

[0014] Figure 3 This is a schematic diagram of the flushing port structure;

[0015] Figure 4 This is a side cross-sectional view of the digestion tube;

[0016] Figure 5 This is a bottom view of the digestion tube;

[0017] Figure 6 This is a schematic diagram of the mechanism connecting the digestion tube and the condenser tube.

[0018] In the diagram: 01-condenser; 1-digestion flask; 11-rinse port; 110-sealing sleeve; 111-clamping groove; 12-retaining ring; 2-funnel mouth; 3-cap; 31-stopper ring; 32-clamping ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] Furthermore, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0023] See Figure 1-6 The purpose of this utility model is to provide a digestion tube that is easy to clean, including a digestion bottle 1. The body of the digestion bottle 1 is cylindrical, and the cylindrical shape provides good uniform heating performance during use. The digestion bottle 1 is made of high-strength glass, which is resistant to high temperatures and corrosion. A rinsing port 11 is provided on one side of the bottom of the digestion bottle 1, and the rinsing port 11 is integrally connected to the digestion bottle 1. A sealing sleeve 110 is detachably connected to the outside of the rinsing port 11. Specifically, the sealing sleeve 110 is fitted onto the outside of the rinsing port 11, and the operator can install the sealing sleeve 110 on the outside of the rinsing port 11 to seal the inside of the digestion tube.

[0024] A cap 3 is detachably connected to the top of the digestion bottle 1, and the cap 3 can be sealed and fastened to the top of the digestion bottle 1. The cap 3 is made of a deformable soft material. During the high-temperature digestion process, the sealing sleeve 110 closes the rinsing port 11, allowing the high-temperature digestion reaction to take place inside.

[0025] Preferably, the flushing port 11 is provided with a plurality of annular snap-fit ​​grooves 111. The plurality of annular snap-fit ​​grooves 111 enhance the fixation and stability between the sealing sleeve 110 and the flushing port 11, and also facilitate the installation of the flushing water pipe during cleaning and maintenance. Specifically, the snap-fit ​​grooves 111 are inverted; the flushing water pipe, when fitted onto the flushing port 11, can deform, with the recessed portion of the flushing water pipe recessed into the inverted groove, further increasing the stability of the flushing water pipe installation.

[0026] Preferably, the digestion bottle 1 is provided with a retaining ring 12. The retaining ring 12 is integrally connected to the digestion bottle 1. When the digestion bottle 1 is in use, it needs to be installed on the chuck of the digestion device. At this time, the retaining ring 12 can be engaged with the top of the digestion device to achieve the function of fixing and limiting.

[0027] Preferably, the digestion bottle 1 has a funnel-shaped opening 2 at its top, and a cap 3 is placed over the top of the funnel-shaped opening 2. During use, the analyzer automatically dispenses liquid into the digestion bottle 1 via its injection module. The injection module typically has a dropper capable of three-axis motion, and a liquid pump and the dropper pump liquid into the digestion bottle 1. The funnel-shaped opening 2 increases the size of the opening, and its top-larger, bottom-smaller structure ensures that the liquid can smoothly enter the digestion bottle 1 even when the machine vibrates.

[0028] Preferably, the bottom edge of the cap 3 is provided with a snap ring 32 that matches the upper edge of the funnel mouth 2. The snap ring 32 can wrap around the upper edge of the funnel mouth 2, thereby achieving a better sealing effect and ensuring that the cap 3 is not easy to fall off.

[0029] Preferably, the bottom of the cap 3 is provided with a stopper ring 31 that matches the inner edge of the top of the funnel mouth 2. The inner edge of the top of the funnel mouth 2 can cover the stopper ring 31, thereby achieving stronger sealing and ensuring that there is no leakage when the digestion bottle 1 is inverted.

[0030] See appendix Figure 5 Preferably, from a tilted angle (with the bottom plane of the digestion bottle 1 as the reference plane), with the connection end of the rinsing port 11 to the digestion bottle 1 facing downwards, extend the two lines that intersect each other along the vertical direction of the bottom surface of the digestion bottle 1 and the length direction of the rinsing port. The acute angle between these two extended lines is α, where α = 24°. This arrangement allows the water flow into the digestion bottle 1 to form a vortex during rinsing, resulting in a more thorough cleaning of the digestion bottle 1.

[0031] In summary, during actual use, the digestion bottle 1 is installed on the digestion device. At this time, the retaining ring 12 can engage with the top of the digestion device, thereby achieving a fixed and limiting function. During the high-temperature digestion process, the sealing sleeve 110 closes the rinsing port 11, allowing the high-temperature digestion reaction to take place inside.

[0032] Once the digestion reaction is complete, the rinsing port 11 can be connected to an external water pipe and rinsing equipment. Water will flow directly into the digestion bottle 1 from the rinsing port 11 to better rinse the digestion bottle 1.

[0033] This device is mainly used for water quality determination; see appendix. Figure 6 This device is used in conjunction with the condenser tube 01 at the top of the digestion tube. Before use, the cap 3 at the top of the digestion tube must be removed. During the cleaning process after digestion, the cap 3 can be used to isolate the condenser tube 01 and the digestion tube. After removing the cap 3, the digester operates as follows:

[0034] 1. Take a water sample into a digestion cup (digestion tube), place a magnetic stir bar inside the digestion cup, and then place it into the instrument's digestion position (this instrument has 32 digestion positions, this step is done manually).

[0035] 2. Add mercuric sulfate solution and potassium dichromate standard solution to the digestion cup in sequence using the lower liquid addition arm. At the same time as adding the liquid, the mixing motor directly below the digestion cup will rotate, which will drive the magnetic stir bar of the digestion cup to rotate, so as to achieve the purpose of mixing.

[0036] 3. The condenser assembly is moved down so that the digestion cup is connected to the lower end of the condenser tube of the condenser module. Then, the upper liquid addition arm slowly adds 15ml of silver sulfate-sulfuric acid solution from the upper end of the condenser tube. At the same time as the liquid is added, the mixing motor directly below the digestion cup will rotate, driving the magnetic stir bar of the digestion cup to rotate, so as to achieve the purpose of mixing.

[0037] 4. The heating module directly below the digestion vessel starts working, maintaining a gentle reflux for 2 hours from the time the solution begins to boil (generally digestion at 180℃ for 2 hours, the heating plate heats up very quickly).

[0038] 5. The temperature of the heating plate of the digestion module is monitored in real time by an infrared temperature sensor to ensure that the digestion temperature can be controlled within the set range.

[0039] Therefore, during the operation of the digestion apparatus, the remaining digestion solution can be temporarily stored through the rinsing port 11 at the bottom of the digestion bottle 1 and the removable sealing sleeve 110. At the same time, the external rinsing equipment connected to the rinsing port 11, combined with its special water flow inlet angle, can achieve efficient rinsing of the digestion bottle 1, which greatly improves the cleaning efficiency and convenience of the digestion tube and reduces the interference of residual liquid on subsequent experiments. The design of the funnel bottle mouth 2 also ensures that the liquid will not spill outside the digestion bottle during the liquid addition process, ensuring a clean experimental environment and demonstrating good practicality.

[0040] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A digestion tube that is easy to clean, characterized in that, The digestion bottle (1) is cylindrical in shape. A rinsing port (11) is provided on one side of the bottom of the digestion bottle (1). The rinsing port (11) is integrally connected to the digestion bottle (1). A sealing sleeve (110) is detachably connected to the outside of the rinsing port (11). Several annular snap-fit ​​grooves (111) are provided on the rinsing port (11). A cap (3) is detachably connected to the top of the digestion bottle (1). The cap (3) can be deformed under manual pressure.

2. The easily cleanable digestion tube according to claim 1, characterized in that, The snap-fit ​​groove (111) is an inverted snap.

3. The easily cleanable digestion tube according to claim 1, characterized in that, The digestion bottle (1) is provided with a retaining ring (12).

4. The easily cleanable digestion tube according to claim 1, characterized in that, The digestion bottle (1) has a funnel-shaped opening (2) at the top, and the cap (3) is placed on top of the funnel-shaped opening (2).

5. The easily cleanable digestion tube according to claim 4, characterized in that, The bottom edge of the cover (3) is provided with a snap ring (32) that matches the upper edge of the funnel mouth (2), and the snap ring (32) can wrap around the upper edge of the funnel mouth (2).

6. The easily cleanable digestion tube according to claim 4, characterized in that, The bottom of the cap (3) is provided with a stopper ring (31) that matches the inner edge of the top of the funnel bottle mouth (2).

7. The easily cleanable digestion tube according to claim 1, characterized in that, With the bottom plane of the digestion bottle (1) as the reference plane, with the connection end of the rinsing port (11) and the digestion bottle (1) facing downwards, draw the extension lines that intersect each other along the vertical direction and the length direction of the rinsing port (11). The acute angle between the two extension lines is a, then a = 24°.

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