Visual hydrogen fluoride dropwise adding device

Abstract

The utility model discloses a visual hydrogen fluoride dripping device which comprises a spiral pipe, a cooler and a metering container, the spiral pipe is arranged in the cooler; the liquid inlet end of the spiral pipe penetrates through the top of the cooler, and the liquid outlet end of the spiral pipe penetrates through the bottom of the cooler to be communicated with the metering container. The hydrofluoric acid metering device can improve the metering accuracy of hydrofluoric acid.

Description

Technical Field

[0001] The utility model relates to the field of medicine dropping equipment, in particular to a visualized hydrogen fluoride dropping device. Background Art

[0002] Hydrogen fluoride is a commonly used substance in many fields such as chemical industry and medicine. Since hydrogen fluoride is gaseous at room temperature, in order to accurately measure the amount of hydrogen fluoride added, it is generally necessary to liquefy the hydrogen fluoride before adding it dropwise. However, the process of adding hydrogen fluoride dropwise is generally carried out at room temperature. During the process of adding liquid hydrogen fluoride dropwise to the metering container, a small amount of hydrogen fluoride liquid will still be vaporized again. Therefore, in fact, the hydrogen fluoride metering process is added to the metering container in a gas-liquid mixed state, making it difficult to accurately measure the amount of hydrogen fluoride added. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a visual hydrogen fluoride dropping device to improve the measurement accuracy.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A visualized hydrogen fluoride dropping device comprises a spiral tube, a cooler and a metering container;

[0006] The spiral tube is installed in the cooler;

[0007] The liquid inlet end of the spiral tube is arranged through the top of the cooler, and the liquid outlet end of the spiral tube passes through the bottom of the cooler and is communicated with the metering container.

[0008] Furthermore, the measuring container is made of PVDF.

[0009] Furthermore, the liquid outlet end of the spiral tube is sealedly connected to the metering container.

[0010] Furthermore, the liquid inlet of the metering container is connected to the spiral tube through a rubber stopper.

[0011] Furthermore, the distance between the cooler and the plane where the liquid inlet of the measuring container is located is 1 to 5 cm.

[0012] Furthermore, a discharge port and a feed port for adding cooling medium are provided on the side wall of the cooler.

[0013] Furthermore, a liquid inlet pipe connected to the feed port and a liquid outlet pipe connected to the discharge port are provided on the top of the cooler.

[0014] The beneficial effect of the utility model is that the setting of the spiral tube slows down the speed at which hydrofluoric acid flows into the metering container, and the spiral tube is placed in a cooler so that the hydrofluoric acid enters the metering container after being fully cooled in the process of flowing through the spiral tube, ensuring that the hydrofluoric acid liquid always remains in a liquid state when entering the metering container, thereby achieving accurate metering. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a visualized hydrogen fluoride dropping device in the utility model.

[0016] Description of labels:

[0017] 1. Spiral tube;

[0018] 2. Cooler; 21. Feed port; 22. Discharge port; 23. Feed pipe; 24. Discharge pipe;

[0019] 3. Measuring container; 31. Liquid inlet;

[0020] 4. Rubber plug. DETAILED DESCRIPTION

[0021] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0022] Please refer to Figure 1 A visualized hydrogen fluoride dropping device comprises a spiral tube 1, a cooler 2 and a metering container 3; the spiral tube 1 is installed in the cooler 2; the liquid inlet end of the spiral tube 1 passes through the top of the cooler 2, and the liquid outlet end of the spiral tube 1 passes through the bottom of the cooler 2 and is connected to the metering container 3.

[0023] It can be understood that the setting of the spiral tube 1 slows down the speed at which hydrofluoric acid flows into the metering container 3. The spiral tube 1 is placed in the cooler 2 so that the hydrofluoric acid enters the metering container 3 after being sufficiently cooled during the process of flowing through the spiral tube 1, ensuring that the hydrofluoric acid liquid always remains in liquid state when entering the metering container 3, thereby achieving accurate metering.

[0024] In some embodiments, the metering container 3 is a transparent measuring cylinder to visualize the amount of hydrofluoric acid added. In some embodiments, the metering container 3 is made of PVDF to prevent hydrofluoric acid from reacting with the metering container 3, ensuring that the amount of hydrofluoric acid added is not consumed, thereby improving the metering accuracy.

[0025] In some embodiments, the liquid outlet end of the spiral tube 1 is sealed and connected to the metering container 3. Since the metering container 3 is sealed and connected to the spiral tube 1, the leakage of hydrofluoric acid is avoided, and even if the hydrofluoric acid is vaporized, it still stays in the metering container 3. Specifically, the liquid inlet 31 of the metering container 3 is connected to the spiral tube through the rubber plug 4, so that when the hydrofluoric acid is added dropwise and the spiral tube 1 is separated from the metering container 3, the liquid inlet 31 of the metering container 3 can be blocked due to the reset of the rubber plug 4, ensuring that the hydrosulfuric acid stays in the metering container 3, reducing the deviation between the added amount and the measured value.

[0026] In some embodiments, the distance between the cooler 2 and the plane where the liquid inlet 31 of the metering container 3 is located is 1 to 5 cm, so that the portion of the spiral tube 1 exposed outside the cooler 2 is shortened as much as possible, shortening the time for hydrofluoric acid to enter the metering container 3, that is, shortening the heat exchange time of the hydrofluoric acid, prolonging the maintenance time of the liquefied state, and improving the metering accuracy.

[0027] In some embodiments, the side wall of the cooler 2 is provided with a feed port 21 for adding a cooling medium, and correspondingly, a discharge port 22 is provided for replacing the cooling medium of the cooler 2. Optionally, the cooling medium may be ice water or dry ice, and the cooler 2 may be provided with a cooling cycle to introduce the cooling medium, specifically, the horizontal plane of the feed port 21 is lower than the horizontal plane of the discharge port 22 and the discharge port 22 is arranged on the top surface of the cooler 2, and ice water is continuously introduced to keep the inside of the cooler 2 at a low temperature. In addition, the cooler 2 may also be a closed container, and a feed pipe 23 and a discharge pipe 24 are provided on the top of the closed container, and the spiral tube 1 is provided through the top of the cooler 2, and when hydrofluoric acid is added, the feed pipe 23 and the discharge pipe 24 are sealed by a sealing cover, and preferably, the feed pipe 23 and the discharge pipe 24 are threadedly connected with the corresponding sealing cover.

[0028] Please refer to Figure 1 , Embodiment 1 of the present utility model is:

[0029] A visualized hydrogen fluoride dropping device comprises a spiral tube 1, a cooler 2 and a metering container 3; the spiral tube 1 is installed in the cooler 2; the liquid inlet end of the spiral tube 1 is arranged through the top of the cooler 2, and the liquid outlet end of the spiral tube 1 passes through the bottom of the cooler 2 and is sealed and connected to the metering container 3 through a rubber plug 4. Specifically, one end of the rubber plug 4 is embedded in the metering container 3, and the other end is provided with a cross-shaped notch for the liquid outlet end of the spiral tube 1 to be embedded in the cross-shaped notch, and when the spiral tube 1 is pulled out, the rubber plug 4 can be quickly reset to seal the metering container 3.

[0030] In this embodiment, the measuring container 3 is a transparent measuring cylinder, and the measuring container 3 is made of PVDF.

[0031] In this embodiment, the distance L between the cooler 2 and the plane where the liquid inlet 31 of the metering container 3 is located is 3 cm.

[0032] In this embodiment, a feed port 21 for adding a cooling medium is provided on the side wall of the cooler 2, and a discharge port 22 is provided correspondingly. The cooler 2 is a closed container, and dry ice is poured into the cooler 2, and a feed pipe 23 connected to the feed port 21 and a discharge pipe 24 connected to the discharge port 22 are provided on the top of the cooler 2. The spiral tube 1 is arranged through the top of the cooler 2. When hydrofluoric acid is added, the feed pipe 23 and the discharge pipe 24 are sealed by a sealing cover. Preferably, the feed pipe 23 and the discharge pipe 24 are threadedly connected to the corresponding sealing cover.

[0033] The working principle of this embodiment is:

[0034] Pour hydrofluoric acid liquid into the spiral tube 1 from the liquid inlet end. During the flow of hydrofluoric acid in the spiral tube 1, it is completely liquefied after being cooled by the cooling medium in the cooler 2 and flows into the metering container 3 completely in liquid state. After the metering is completed, the metering container 3 is separated from the spiral tube 1. Since the rubber plug 4 is deformed when connected to the spiral tube 1, when the metering container 3 is separated from the spiral tube 1, the rubber plug 4 can be quickly reset to seal the metering container 3.

[0035] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A visualized hydrogen fluoride dropping device, characterized in that: It includes spiral tube, cooler and metering container; The spiral tube is installed in the cooler; The liquid inlet end of the spiral tube is arranged through the top of the cooler, and the liquid outlet end of the spiral tube passes through the bottom of the cooler and is communicated with the metering container.

2. A visualized hydrogen fluoride dropping device according to claim 1, characterized in that: The measuring container is made of PVDF.

3. A visualized hydrogen fluoride dropping device according to claim 1, characterized in that: The liquid outlet end of the spiral tube is sealed and connected to the metering container.

4. A visualized hydrogen fluoride dropping device according to claim 3, characterized in that: The liquid inlet of the metering container is communicated with the spiral tube through a rubber plug.

5. A visualized hydrogen fluoride dropping device according to claim 1, characterized in that: The distance between the cooler and the plane where the liquid inlet of the measuring container is located is 1 to 5 cm.

6. A visualized hydrogen fluoride dropping device according to claim 1, characterized in that: The side wall of the cooler is provided with a discharge port and a feed port for adding cooling medium.

7. A visualized hydrogen fluoride dropping device according to claim 6, characterized in that: The top of the cooler is provided with a liquid inlet pipe connected with the feed inlet and a liquid outlet pipe connected with the discharge outlet.

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