Device for adding, lifting, storing and treating standard solution

Abstract

The utility model provides a standard solution adding, lifting, storing and processing device which comprises a hollow shell, a standard solution adding opening and a connecting opening are formed in a top plate of the shell, a standard solution lifting assembly is arranged in the connecting opening, and a standard solution cleaning opening is formed in the bottom of the side face of the shell. Detachable sealing covers are respectively arranged on the standard solution adding opening and the standard solution cleaning opening. When in use, the treatment device is connected with a full-automatic Kjeldahl apparatus to provide sufficient standard solutions for the inspection process, so that the probability of inspection result distortion caused by incomplete single-batch reaction process due to small storage capacity of the standard solutions is reduced, and the inspection accuracy is improved; meanwhile, frequent liquid adding is avoided, the labor intensity is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection instruments and relates to a device for adding, lifting, storing and processing a standard solution. Background Art

[0002] Currently, the Kelvin method is commonly used to test for nitrogen in industrial coal or alloys. The test typically involves weighing a predetermined amount of sample, adding a mixed catalyst and acid, and heating to decompose the nitrogen, converting it into ammonium bisulfate. Excess sodium hydroxide solution is then added to evaporate the ammonia, which is then absorbed in a boric acid solution. In practice, once the ammonia in the sample has evaporated and then been absorbed, a titration test is typically performed with a standard sulfuric acid solution. Based on the amount of sulfuric acid used, the nitrogen content in the sample is calculated.

[0003] In the prior art, a Kjeldahl nitrogen analyzer is commonly used to test the nitrogen in industrial coal or alloys. There are currently two types of Kjeldahl nitrogen analyzers: one is a semi-automatic Kjeldahl nitrogen analyzer, and the other is a fully automatic Kjeldahl nitrogen analyzer. The semi-automatic Kjeldahl nitrogen analyzer evaporates and absorbs the ammonia and then needs to be titrated manually; the fully automatic Kjeldahl nitrogen analyzer can calculate the nitrogen content in the sample by automatically adding the standard solution and inputting the relevant information. Manual titration can no longer meet the needs of rapid testing, so most people use a fully automatic Kjeldahl nitrogen analyzer to test nitrogen. However, the capacity of the standard solution bottle equipped with the fully automatic Kjeldahl nitrogen analyzer is relatively small. During the test process, the test results may be distorted due to the incomplete reaction process of a single batch due to the small amount of standard solution. At the same time, frequent addition and replacement of liquids increases labor intensity and the risk of accidental errors. Summary of the Invention

[0004] The purpose of the utility model is to provide a large-capacity standard solution adding, lifting, storing and processing device, which can avoid distortion of test results while meeting the needs of rapid testing.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A device for adding, lifting, storing and processing a standard solution comprises a hollow shell, wherein a standard solution adding port and a connecting port are provided on the top plate of the shell, a standard solution lifting assembly is provided in the connecting port, and a standard solution cleaning port is provided at the bottom side of the shell; the standard solution lifting assembly comprises an inverted barrel-shaped round cover, which is mounted on the connecting port, a first through hole and a second through hole are provided on the top of the round cover, a liquid inlet capillary is provided in the first through hole, the lower end of the liquid inlet capillary passes through the first through hole and extends into the shell, and is connected to a sinker via a connecting button, the connecting button and the sinker are both suspended in the shell via the liquid inlet capillary, and the other end of the liquid inlet capillary is located outside the shell; a threaded tube is fixed in the second through hole, the inner hole of the threaded tube is communicated with the interior of the shell, the threaded tube is threadedly connected to the lower end of an exhaust pipe, a filter is mounted on the upper end of the exhaust pipe, and the inner hole of the exhaust pipe is communicated with the interior of the shell.

[0007] The utility model has the following advantages:

[0008] 1. Connect the processing device with a fully automatic Kjeldahl nitrogen analyzer to provide sufficient standard solution for the test process, reducing the probability of distorted test results caused by incomplete single-batch reaction process due to small storage volume of standard solution, and improving test accuracy;

[0009] 2. Avoid frequent liquid addition, reduce labor intensity and improve production efficiency;

[0010] 3. When in use, it forms an integral part with the fully automatic Kjeldahl nitrogen analyzer, and there is no safety hazard. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the processing device of the utility model;

[0012] Figure 2 This is a cross-sectional view of the processing device of the utility model;

[0013] Figure 3 It is a schematic diagram of the sinker in the processing device of the utility model;

[0014] Figure 4 This is a schematic diagram of the filter in the processing device of the present invention.

[0015] In the figure: 1. Shell; 2. Standard solution addition port; 31. Round cover; 32. First through hole; 33. Second through hole; 34. Liquid inlet capillary; 35. Connecting button; 36. Sinking member; 361. Main body; 362. Internal thread; 37. Exhaust pipe; 38. Filter; 381. Fixing ring; 382. Connecting ring; 383. Filter column; 384. Exhaust port; 39. Threaded tube; 4. Standard solution cleaning port. DETAILED DESCRIPTION

[0016] The present invention is described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0017] See also Figures 1 to 4The processing device of the present invention comprises a hollow shell 1, a standard solution addition port 2 and a connection port are provided on the top plate of the shell 1, a standard solution lifting assembly is provided in the connection port, a standard solution cleaning port 4 is provided on the side bottom of the shell 1, and a detachable cover is provided on the standard solution addition port 2 and the standard solution cleaning port 4 respectively; the standard solution lifting assembly comprises an inverted barrel-shaped round cover 31, the round cover 31 is installed on the connection port, a first through hole 32 and a second through hole 33 are provided on the top of the round cover 31, and a liquid inlet capillary is provided in the first through hole 32 34, the lower end of the liquid inlet capillary 34 passes through the first through hole 32 and extends into the shell 1, and is connected to the sinker 36 through the connecting button 35. The connecting button 35 and the sinker 36 are both suspended in the shell 1 through the liquid inlet capillary 34, and the other end of the liquid inlet capillary 34 is located outside the shell 1; a threaded tube 39 is fixedly connected to the second through hole 33, the inner hole of the threaded tube 39 is connected to the interior of the shell 1, the threaded tube 39 is threadedly connected to the lower end of the exhaust pipe 37, and a filter 38 is installed at the upper end of the exhaust pipe 37, and the inner hole of the exhaust pipe 37 is connected to the interior of the shell 1.

[0018] The sinker 36 in the processing device of the present invention comprises a cylindrical body 361 , an inner hole of which is machined an internal thread 362 .

[0019] The connecting button 35 is a hollow cylinder, the inner diameter of the cylinder is equal to the outer diameter of the liquid inlet capillary 34, and the outer circumference of the cylinder is processed with an external thread that matches the inner hole of the sinker, so that the connecting button 35 can be easily inserted into the lower end of the liquid inlet capillary 34 and inserted into the inner hole of the sinker together to achieve the connection between the liquid inlet capillary 34 and the sinker 36.

[0020] The filter 38 in the treatment device of the present invention includes a coaxially arranged fixing ring 381, a connecting ring 382 and a filter column 383. The filter column 383 is fixedly connected to the fixing ring 381 through the connecting ring 382. The filter column 383 is cylindrical, and a partition made of a water-based mixed fiber filter membrane is provided in the inner hole of the filter column 383. One end of the filter column 383 is fixedly connected to the exhaust pipe 37, and the top surface of the exhaust pipe 37 is located below the partition.

[0021] When using the processing device of the utility model:

[0022] After the standard solution is prepared, it is added to the device through the solution addition port 2; the other end of the liquid inlet capillary 34 is connected to the fully automatic Kjeldahl nitrogen analyzer. When the lifting function is realized, the standard solution is drawn from the liquid inlet capillary 34 to the reaction cup of the fully automatic Kjeldahl nitrogen analyzer through the circulation pump in the fully automatic Kjeldahl nitrogen analyzer to ensure that the lifting amount of the standard solution is accurate during the reaction process. If the amount of standard solution used is insufficient, it is replenished through the standard solution addition port 2. After replenishment, recalibration is performed and the standard is used immediately.

Claims

1. A device for adding, lifting, storing and processing a standard solution, characterized in that: The invention comprises a hollow shell (1), wherein a standard solution adding port (2) and a connecting port are provided on the top plate of the shell (1), a standard solution lifting assembly is provided in the connecting port, and a standard solution cleaning port (4) is provided at the bottom of the side of the shell (1); the standard solution lifting assembly comprises an inverted barrel-shaped round cover (31), the round cover (31) is mounted on the connecting port, and a first through hole (32) and a second through hole (33) are provided on the top of the round cover (31); a liquid inlet capillary (34) is provided in the first through hole (32), and the lower end of the liquid inlet capillary (34) passes through the first through hole (32) and extends into the shell (1), and is connected to the sinker (36) through the connecting button (35), the connecting button (35) and the sinker (36) are both suspended in the shell (1) through the liquid inlet capillary (34), and the other end of the liquid inlet capillary (34) is located outside the shell (1); a threaded tube (39) is fixedly connected to the second through hole (33), the inner hole of the threaded tube (39) is communicated with the interior of the shell (1), the threaded tube (39) is threadedly connected to the lower end of the exhaust pipe (37), a filter (38) is installed at the upper end of the exhaust pipe (37), and the inner hole of the exhaust pipe (37) is communicated with the interior of the shell (1).

2. The standard solution adding, lifting, storing and processing device according to claim 1, characterized in that: The sinker (36) comprises a cylindrical body (361), an inner hole of which is machined an internal thread (362).

3. The standard solution adding, lifting, storing and processing device according to claim 2, characterized in that: The connecting button (35) is in the shape of a hollow cylinder, the inner diameter of the cylinder is equal to the outer diameter of the liquid inlet capillary (34), and the outer peripheral surface of the cylinder is processed with an external thread matching the inner hole of the sinker (36).

4. The standard solution adding, lifting, storing and processing device according to claim 1, characterized in that: The filter (38) comprises a coaxially arranged fixing ring (381), a connecting ring (382) and a filter column (383), wherein the filter column (383) is fixedly connected to the fixing ring (381) via the connecting ring (382); the filter column (383) is cylindrical, and a partition made of a water-based mixed fiber filter membrane is provided in the inner hole of the filter column (383); one end of the filter column (383) is fixedly connected to the exhaust pipe (37), and the top surface of the exhaust pipe (37) is located below the partition.

5. The standard solution adding, lifting, storing and processing device according to any one of claims 1 to 4, characterized in that: The standard solution addition port (2) and the standard solution cleaning port (4) are respectively provided with detachable covers.

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