Water sample digestion device for total phosphorus and total nitrogen

Abstract

The utility model discloses a water sample digestion device for total phosphorus and total nitrogen, which comprises a heating container, the heating container comprises a heating base and a heating cylinder, the top of the heating base is connected with the heating cylinder, the heating cylinder is used for containing water, and a heating pipe of the heating base extends into the heating cylinder and is used for heating the water in the heating cylinder; the loading container is placed in the heating cylinder, and a through hole penetrating through the loading container is formed in the bottom of the loading container; the test tube rack is placed in the loading container; and the test tube is inserted on the test tube rack. The water sample digestion device disclosed by the utility model can ensure that the test tube is uniformly heated and a sample in the test tube is digested within a preset time, and belongs to the technical field of total phosphorus and total nitrogen measuring equipment.

Description

Technical Field

[0001] This utility model belongs to the technical field of total phosphorus and total nitrogen determination equipment, and specifically relates to a water sample digestion device for total phosphorus and total nitrogen. Background Technology

[0002] In natural water bodies, domestic sewage, and industrial wastewater, phosphorus exists mostly in the form of compounds such as orthophosphates, polyphosphates, and organic phosphates, present in solutions, humic particles, or aquatic organisms. Digestion of water samples for total phosphorus (TP) and total nitrogen (TN) is a crucial step in water quality analysis. Its purpose is to convert organic and inorganic phosphorus / nitrogen in the water sample into measurable forms (such as orthophosphates and nitrates) through high temperature, high pressure, or chemical oxidation.

[0003] Currently, the main method is to heat the test tubes by placing them in a water bath heating device. However, when there are many test tubes that need to be heated, the test tubes placed together will be heated unevenly, which will require an additional heating period and cause errors in the detection of total phosphorus and total nitrogen. Utility Model Content

[0004] The purpose of this invention is to provide a water sample digestion device for total phosphorus and total nitrogen, which can ensure uniform heating of the test tube and digest the sample in the test tube within a predetermined time.

[0005] The specific technical solution is as follows:

[0006] A water sample digestion device for total phosphorus and total nitrogen, comprising:

[0007] A heating container, comprising a heating base and a heating cylinder, wherein the top of the heating base is connected to the heating cylinder, the heating cylinder is used to hold water, and the heating tube of the heating base extends into the heating cylinder to heat the water inside the heating cylinder;

[0008] A loading container is placed inside a heating cylinder, and the bottom of the loading container has a through hole.

[0009] Test tube rack, placed inside the loading container;

[0010] Test tubes, the test tubes are placed on the test tube rack.

[0011] Preferably, the heating base includes a base body, a temperature sensor, and an electric heating tube. The top of the base body is welded and fixed to the bottom of the heating cylinder. The electric heating tube extends from the base body to the top of the base body and enters the heating cylinder. The temperature sensor is located at the top of the base body.

[0012] Preferably, a control module is provided on the outside of the heating base, and the control module is electrically connected to the temperature sensor and the electric heating tube respectively.

[0013] Preferably, the top outer side of the heating cylinder is provided with an end cap buckle, and the top of the heating cylinder is provided with an openable end cap, which is fastened to the top of the heating cylinder by the buckle.

[0014] Preferably, the test tube rack includes a bottom ring, vertical rods, and a middle ring. There are multiple vertical rods, all of which are connected to the bottom ring. The multiple vertical rods are evenly distributed around the bottom ring. The middle ring is adjustablely mounted on the vertical rods and has an embedding groove. A test tube insert plate is embedded in the embedding groove. The test tube insert plate has multiple test tube insertion holes and multiple ventilation holes. Test tubes are inserted into the test tube insertion holes.

[0015] Preferably, the outer side of the middle ring is provided with two collars, which are symmetrically distributed on the middle ring. The two collars are respectively sleeved on two vertical rods and locked to the vertical rods by locking bolts.

[0016] Preferably, the loading container is provided with a handle on the top.

[0017] Preferably, the top side wall of the loading container is provided with vents.

[0018] Compared with existing technologies, this utility model has the following beneficial effects:

[0019] The water sample digestion device of this invention can ensure uniform heating of the test tube and digest the sample in the test tube within a predetermined time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is an exploded view of the water sample digestion device.

[0022] Figure 2 This is a three-dimensional diagram of the water sample digestion device.

[0023] Figure 3 This is a 3D view of the heating container.

[0024] Figure 4 This is a top view of the heated container.

[0025] 1 is the heating container, 11 is the heating base, 12 is the heating cylinder, 13 is the end cap, 14 is the end cap buckle, 15 is the electric heating tube, 16 is the temperature sensor, 2 is the loading container, 3 is the test tube rack, 31 is the bottom ring, 32 is the vertical rod, 33 is the middle ring, 34 is the test tube insertion plate, 35 is the test tube insertion hole, and 36 is the collar. Detailed Implementation

[0026] 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.

[0027] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", 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 and simplifying the description, and are not intended to 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.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0030] like Figures 1-4 As shown in the figure, this embodiment provides a water sample digestion device for total phosphorus and total nitrogen, comprising:

[0031] Heating container 1 includes a heating base 11 and a heating cylinder 12. The top of the heating base 11 is connected to the heating cylinder 12. The heating cylinder 12 is used to hold water. The heating tube of the heating base 11 extends into the heating cylinder 12 to heat the water in the heating cylinder 12.

[0032] Loading container 2 is placed inside heating cylinder 12, and the bottom of loading container 2 has a through hole penetrating loading container 2;

[0033] Test tube rack 3 is placed inside loading container 2;

[0034] Test tubes are placed on test tube rack 3.

[0035] Total phosphorus and total nitrogen in water samples are digested by high temperature and high pressure or by chemical oxidants (such as potassium persulfate) to convert organic phosphorus and organic nitrogen in the sample into inorganic forms, which are then easier to detect in subsequent tests.

[0036] When using the device of this embodiment, first load the sample into the test tube, add the oxidant, and then insert it into the test tube rack 3. Place the test tube rack 3 into the loading container 2, place the loading container 2 into the heating cylinder 12, close the end cap 13, and fasten it with the end cap buckle 14. Connect the heating base 11 to the power supply. Through the control module and temperature sensor 16, ensure that the heating temperature is stable. Use the test tube rack 3 to space the test tubes so that the test tubes are heated evenly, and ensure that digestion is completed within the predetermined time.

[0037] The heating base 11 includes a base body, a temperature sensor 16, and an electric heating tube 15. The top of the base body is welded and fixed to the bottom of the heating cylinder 12. The electric heating tube 15 extends from the base body to the top of the base body and enters the heating cylinder 12. The temperature sensor 16 is located on the top of the base body.

[0038] A control module is provided on the outside of the heating base 11. The control module is electrically connected to the temperature sensor 16 and the electric heating tube 15.

[0039] The heating cylinder 12 has an end cap buckle 14 on its top outer side, and an openable end cap 13 on its top. The end cap 13 is fastened to the top of the heating cylinder 12 by the buckle. The end cap 13 seals the heating cylinder 12, ensuring a stable temperature inside the heating cylinder 12.

[0040] The test tube rack 3 includes a bottom ring 31, vertical rods 32, and a middle ring 33. Multiple vertical rods 32 are connected to the bottom ring 31 and are evenly distributed circumferentially around the bottom ring 31. The middle ring 33 is adjustablely mounted on the vertical rods 32 and has an embedding groove into which a test tube insert plate 34 is fitted. The test tube insert plate 34 has multiple test tube insertion holes 35 and multiple vent holes. Test tubes are inserted into the test tube insertion holes 35. Specifically, the vent holes facilitate the flow of water vapor into the loading container 2, preventing damage to the device due to excessive air pressure.

[0041] Two collars 36 are provided on the outer side of the middle ring 33, symmetrically distributed on the middle ring 33. Each collar 36 is fitted onto one of the two vertical rods 32, and the collars 36 are locked to the vertical rods 32 by locking bolts. Specifically, through the design of the collars 36 and the middle ring 33, the position of the middle ring 33 can be adjusted according to different test tubes, and then locked in place by the locking bolts.

[0042] In some embodiments, the number of collars 36 is the same as the number of vertical rods 32. By having multiple collars 36 cooperate with the vertical rods 32, the stability of the middle ring 33 is improved.

[0043] The loading container 2 is equipped with a handle on its top. Specifically, the handle makes it easy for staff to lift the loading container 2 out of the heating cylinder 12 and then easily remove the test tubes.

[0044] The top side wall of the loading container 2 is provided with a vent. Specifically, the loading container 2 is provided with a vent on the top side wall, so that water vapor can enter or flow out through the vent, allowing water vapor to enter from the bottom and top of the loading container 2, ensuring that the overall temperature of the loading container 2 is uniform, and further avoiding uneven heating of the test tube.

[0045] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A water sample digestion device for total phosphorus and total nitrogen, characterized in that, include: A heating container, comprising a heating base and a heating cylinder, wherein the top of the heating base is connected to the heating cylinder, the heating cylinder is used to hold water, and the heating tube of the heating base extends into the heating cylinder to heat the water inside the heating cylinder; A loading container is placed inside a heating cylinder, and the bottom of the loading container has a through hole. Test tube rack, placed inside the loading container; Test tubes, the test tubes are placed on the test tube rack.

2. The water sample digestion device for total phosphorus and total nitrogen according to claim 1, characterized in that, The heating base includes a base body, a temperature sensor, and an electric heating element. The top of the base body is welded and fixed to the bottom of the heating cylinder. The electric heating element extends from the base body to the top of the base body and enters the heating cylinder. The temperature sensor is located at the top of the base body.

3. The water sample digestion device for total phosphorus and total nitrogen according to claim 1, characterized in that, A control module is located on the outside of the heating base, and the control module is electrically connected to the temperature sensor and the electric heating element.

4. The water sample digestion device for total phosphorus and total nitrogen according to claim 1, characterized in that, The heating cylinder has an end cap buckle on the top outer side, and the top of the heating cylinder has an openable end cap that is fastened to the top of the heating cylinder by the buckle.

5. The water sample digestion device for total phosphorus and total nitrogen according to claim 1, characterized in that, The test tube rack includes a bottom ring, vertical rods, and a middle ring. There are multiple vertical rods, all of which are connected to the bottom ring. The vertical rods are evenly distributed around the bottom ring. The middle ring is adjustable and is mounted on the vertical rods. The middle ring has an embedded groove, into which a test tube insert plate is embedded. The test tube insert plate has multiple test tube insertion holes and multiple ventilation holes. Test tubes are inserted into the test tube insertion holes.

6. The water sample digestion device for total phosphorus and total nitrogen according to claim 5, characterized in that, Two collars are provided on the outer side of the middle ring. The two collars are symmetrically distributed on the middle ring and are respectively connected to two vertical rods. The collars are locked to the vertical rods by locking bolts.

7. The water sample digestion device for total phosphorus and total nitrogen according to claim 1, characterized in that, The container is equipped with a handle on top.

8. The water sample digestion device for total phosphorus and total nitrogen according to claim 1, characterized in that, The top side wall of the loading container is provided with vents.

Images