Simple cooling water circulation system of azotometer

Abstract

The utility model discloses a simple cooling water circulation system of an azotometer, which comprises a container containing circulating water and a water pumping piece arranged in the container, a water inlet pipe is arranged between a water outlet end of the water pumping piece and a water inlet of the azotometer, and a water outlet pipe is arranged between a water outlet of the azotometer and the container. And a cooling piece for cooling the circulating water is arranged in the container. The cooling device can realize the function of cooling the gas in the azotometer, improves the condensation effect in the nitrogen determination process, and is simple in structure, low in cost and suitable for circularly cooling the gas in the azotometer.

Description

Technical Field

[0001] The utility model belongs to the field of nitrogen determination instruments, in particular to a simple cooling water circulation system of the nitrogen determination instrument. Background Art

[0002] The working principle of the nitrogen analyzer is based on the international Kjeldahl method, that is, the protein content is indirectly obtained by measuring the nitrogen content in the sample. The steps for using the nitrogen analyzer include preparing reagents and samples, digesting samples, distilling and absorbing, titrating, and calculating results. The distillation and absorption are specifically: distilling the digested sample to volatilize ammonia and react with boric acid, so that the ammonia is condensed and fixed in the boric acid. Therefore, the nitrogen analyzer needs to be connected to the cooling water circulation system. Low-temperature water enters the nitrogen analyzer to cool the gas. At the same time, the high-temperature water in the nitrogen analyzer is discharged to the cooling water circulation system to cool down and then circulate into the nitrogen analyzer. Otherwise, the distillation will cause the pressure in the reaction bottle to increase, and the distillate will form bubbles, resulting in back suction, which will affect the accuracy of the experimental data.

[0003] At present, enterprises or scientific research sites usually choose to purchase cooling water circulation machines for nitrogen analyzers from outside, which is costly. In addition, for some small laboratories, the frequency of use of nitrogen analyzers is low, and the high price of cooling water circulation machines is not worth purchasing. Moreover, if they are often idle after purchase, their service life will be shortened. Utility Model Content

[0004] In order to solve the above deficiencies in the prior art, the utility model aims to provide a simple cooling water circulation system for a nitrogen determiner, so as to achieve the purpose of cooling the gas in the nitrogen determiner to improve the condensation effect during the nitrogen determination process and reduce the use cost.

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

[0006] A simple cooling water circulation system for a nitrogen analyzer comprises a container containing circulating water and a water pumping member arranged in the container, a water inlet pipe is arranged between the water outlet end of the water pumping member and the water inlet of the nitrogen analyzer, a water outlet pipe is arranged between the water outlet of the nitrogen analyzer and the container, and a cooling member for cooling the circulating water is arranged in the container.

[0007] As a limitation of the utility model: a valve for controlling water flow and water cut-off is arranged on the water inlet pipe.

[0008] As another limitation of the present invention: the water inlet pipe includes a main pipe connected to the water pumping member and a first branch pipe connected to the water inlet of the nitrogen analyzer, a tee is arranged between the main pipe and the first branch pipe, a second branch pipe is connected to the interface of the tee away from the main pipe and the first branch pipe, the water outlet end of the second branch pipe extends into the container, and valves are arranged on the first branch pipe and the second branch pipe.

[0009] As a further limitation of the present utility model: the water inlet pipe, the second branch pipe and the water outlet pipe are all soft rubber pipes.

[0010] As another limitation of the present invention: the cooling element is an ice bottle.

[0011] As a further limitation of the present invention: the water pumping member is a circulation pump electrically connected to a power source.

[0012] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0013] The utility model comprises a container filled with circulating water, wherein a pumping part and a cooling part for cooling the circulating water are arranged in the container, the pumping part is connected to the water inlet of the nitrogen determiner through a water inlet pipe, the pumping part pumps the low-temperature circulating water to the nitrogen determiner, the high-temperature water in the nitrogen determiner is discharged into the container through a water outlet pipe, and then enters the nitrogen determiner to cool the gas after being cooled by the cooling part, and the cycle is repeated to realize the function of cooling the gas in the nitrogen determiner, and improve the condensation effect in the nitrogen determination process. The device has a simple structure and a low manufacturing cost.

[0014] In summary, the utility model can realize the function of cooling the gas in the nitrogen analyzer, improve the condensation effect in the nitrogen determination process, and has a simple structure and low cost, and is suitable for cooling the gas circulation in the nitrogen analyzer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] Figure 1 It is a schematic diagram of the application structure of an embodiment of the utility model.

[0017] In the figure: 1- bucket, 2- tap water, 3- circulation pump, 4- nitrogen analyzer, 5- water inlet pipe, 51- main pipe, 52- first branch pipe, 6- water outlet pipe, 7- ice bottle, 8- valve, 9- tee, 10- second branch pipe, 11- power supply. DETAILED DESCRIPTION

[0018] The preferred embodiment of the utility model is described below in conjunction with the accompanying drawings. It should be understood that the simple cooling water circulation system of the nitrogen analyzer described here is a preferred embodiment, which is only used to illustrate and explain the utility model and does not constitute a limitation of the utility model.

[0019] like Figure 1 As shown, this embodiment includes a container containing circulating water, and also includes a pumping member and a cooling member arranged in the container, and the cooling member is used to cool the circulating water. When working, the pumping member pumps low-temperature circulating water into the nitrogen analyzer 4 to cool the gas, and the high-temperature water discharged from the nitrogen analyzer 4 enters the container and is cooled by the cooling member and then circulates into the nitrogen analyzer 4 again.

[0020] In this embodiment, the circulating water is tap water 2, which has low cost; the container is a bucket 1, and any structure capable of holding water in the prior art can also be selected; the pumping part is a circulating pump 3, and of course any water pump in the prior art can also be selected.

[0021] In this embodiment, the cooling element is an ice bottle 7, that is, the bottle containing tap water is put into a refrigerator for freezing, and after freezing, it is put into a water bucket 1 to cool the tap water 2, and after the ice cubes in the ice bottle 7 melt, it is put into the refrigerator for freezing again. This method has a good cooling effect on the tap water 2, ensures the condensation effect during the nitrogen determination process, and at the same time, for laboratories with fewer tests, it undoubtedly reduces the use cost. Of course, the cooling element can also be replaced with an ice bag commonly used in the prior art, which can also be used for cyclic freezing and low cost.

[0022] like Figure 1 As shown, the circulation pump 3 is placed below the liquid level in the water bucket 1, and the circulation pump 3 is electrically connected to the power supply 11. An inlet pipe 5 is arranged between the water outlet end of the circulation pump 3 and the water inlet of the nitrogen analyzer 4. The inlet pipe 5 includes a main pipe 51 connected to the circulation pump 3 and a first branch pipe 52 connected to the water inlet of the nitrogen analyzer 4. A tee 9 is arranged between the main pipe 51 and the first branch pipe 52. A second branch pipe 10 is connected to the interface of the tee 9 away from the main pipe 51 and the first branch pipe 52. The water outlet end of the second branch pipe 10 extends into the container. The first branch pipe 52 and the second branch pipe 10 are both provided with valves 8 for controlling the flow and disconnection of the tap water 2. The tee 9 and the second branch pipe 10 are arranged to adjust the water flow rate. When the water pressure in the water inlet pipe 5 is relatively high, the valve 8 on the second branch pipe 10 is opened to allow part of the tap water 2 to flow back into the water bucket 1 through the second branch pipe 10 to ensure that the water flow entering the nitrogen analyzer 4 is more stable.

[0023] Of course, in this embodiment, only one water inlet pipe 5 can be provided between the water outlet of the circulation pump 3 and the water inlet of the nitrogen analyzer 4, and the water flow rate entering the nitrogen analyzer 4 can be controlled by adjusting the opening and closing degree of the valve 8 on the water inlet pipe 5.

[0024] like Figure 1 As shown, a water outlet pipe 6 is provided between the water outlet of the nitrogen analyzer 4 and the water bucket 1, so that the high-temperature water in the nitrogen analyzer 4 enters the water bucket 1 through the water outlet pipe 6 and is cooled by the ice bottle 7 before entering the nitrogen analyzer 4, thereby realizing the recycling of water resources and effectively saving water resources.

[0025] The water inlet pipe 5, the second branch pipe 10 and the water outlet pipe 6 in this embodiment are all made of soft rubber tubes, which are highly flexible, can be easily bent, and are more convenient to install. Of course, any pipe in the prior art can also be used, such as PVC pipes and ordinary plastic pipes.

[0026] When using this embodiment, the water inlet pipe 5 is connected to the water inlet of the nitrogen analyzer 4, the water outlet pipe 6 is connected to the water outlet of the nitrogen analyzer 4, and the ice bottle 7 is placed in the water bucket 1. Several ice bottles 7 can be placed to quickly cool the tap water 2, thereby improving the condensation effect during nitrogen determination. Turn on the switch of the nitrogen analyzer 4, connect the circulating pump 3 to the power supply 11, and the low-temperature water enters the nitrogen analyzer 4. The high-temperature water is discharged into the water bucket 1 and cooled by the ice bottle 7 before entering the nitrogen analyzer 4 for recycling. After the ice cubes in the ice bottle 7 melt, replace the ice bottle 7, put the melted ice bottle 7 back into the refrigerator for freezing, and reuse it. After the test is over, turn off the nitrogen analyzer 4 and disconnect the power supply 11 of the circulating pump 3. The system has a simple structure and low cost.

[0027] It should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiment, those skilled in the art can still modify the technical solutions recorded in the above embodiment or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A simple cooling water circulation system for a nitrogen analyzer, characterized in that: It includes a container containing circulating water and a pumping member arranged in the container, a water inlet pipe is arranged between the water outlet end of the pumping member and the water inlet of the nitrogen analyzer, a water outlet pipe is arranged between the water outlet of the nitrogen analyzer and the container, and a cooling member for cooling the circulating water is arranged in the container.

2. The simplified cooling water circulation system of a nitrogen analyzer according to claim 1, characterized in that: The water inlet pipe is provided with a valve for controlling the flow and interruption of water.

3. A simple cooling water circulation system for a nitrogen analyzer according to claim 1 or 2, characterized in that: The water inlet pipe includes a main pipe connected to the pumping member and a first branch pipe connected to the water inlet of the nitrogen analyzer. A tee is arranged between the main pipe and the first branch pipe. A second branch pipe is connected to the interface of the tee away from the main pipe and the first branch pipe. The water outlet end of the second branch pipe extends into the container. Valves are arranged on the first branch pipe and the second branch pipe.

4. The simplified cooling water circulation system of a nitrogen analyzer according to claim 3, characterized in that: The water inlet pipe, the second branch pipe and the water outlet pipe are all soft rubber tubes.

5. A simplified cooling water circulation system for a nitrogen analyzer according to any one of claims 1, 2 and 4, characterized in that: The cooling element is an ice bottle.

6. The simplified cooling water circulation system of a nitrogen analyzer according to claim 5, characterized in that: The water pumping member is a circulation pump electrically connected to a power source.

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