Total phosphorus determination reaction equipment

Abstract

The utility model discloses total phosphorus determination reaction equipment which comprises a reactor, a sample introduction pipe and a cover body, a reaction cavity with an opening is defined by the reactor, a liquid inlet and outlet is formed in the side wall of the reactor, the sample introduction pipe is provided with a sample introduction channel, the sample introduction channel is communicated with the reaction cavity through the liquid inlet and outlet, and the cover body covers the opening of the reaction cavity in a sealing mode. According to the total phosphorus determination reaction equipment disclosed by the utility model, after the reaction cavity is covered, a water sample to be determined and an oxidation digestion reagent can be added into the reaction cavity through the sample feeding pipe, so that the amount of acid mist overflowing out of the reaction cavity generated in the oxidation digestion process is reduced, or the acid mist overflowing out of the reaction cavity generated in the oxidation digestion process is avoided; the safety of operators is effectively ensured, and the safety performance of the total phosphorus determination reaction equipment is improved. Moreover, operators do not need to take rigorous protective measures, so that the operation steps of the operators in the total phosphorus determination process are reduced, and the total phosphorus determination efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage detection, in particular to a total phosphorus determination reaction device. Background Technique

[0002] Total phosphorus refers to the total amount of various forms of phosphorus in water, that is, the result obtained by measuring the water sample after digestion and converting various forms of phosphorus into orthophosphate, and is calculated in milligrams of phosphorus per liter of water.

[0003] Phosphorus in water can exist in the forms of elemental phosphorus, orthophosphate, condensed sulfate, pyrophosphate, metaphosphate, and phosphate combined with organic groups. Its main sources are domestic sewage, chemical fertilizers, organophosphorus pesticides, and phosphate builders used in modern detergents, etc.

[0004] There are many detection methods for total phosphorus, but dissolved organic phosphorus in water cannot be directly measured. It must be converted into dissolved inorganic phosphate through an oxidation digestion method before measurement. To achieve accurate determination of total phosphorus, oxidation digestion is both the key point and the difficulty.

[0005] In the oxidation digestion link of measuring the total phosphorus content, acid mist will be generated, which affects the physical and mental health of operators. In related technologies, in order to reduce the impact of the acid mist generated in the oxidation digestion link on operators, operators need to wear protective clothing before measurement, which is cumbersome to operate and has low measurement efficiency. Summary of the Utility Model

[0006] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a total phosphorus determination reaction device, which can effectively ensure the safety of operators, improve the safety performance of the total phosphorus determination reaction device, and enable operators to not take overly strict protective measures, reduce the operation steps of operators in the total phosphorus determination process, and improve the total phosphorus determination efficiency.

[0007] The total phosphorus determination reaction device according to an embodiment of the utility model includes: a reactor, defining a reaction chamber with an opening, and an inlet and outlet are provided on the side wall of the reactor; a sampling tube, having a sampling channel, and the sampling channel is communicated with the reaction chamber through the inlet and outlet; a cover body, sealing the opening of the reaction chamber.

[0008] According to the total phosphorus determination reaction device of the present utility model, by covering the cover at the opening of the reaction chamber and arranging a sampling tube communicated with the reaction chamber on the side wall of the reaction chamber, after covering the reaction chamber, the water sample to be measured and the oxidation digestion reagent can be added into the reaction chamber through the sampling tube, thereby reducing the amount of acid mist generated during the oxidation digestion process overflowing from the reaction chamber, or avoiding the acid mist generated during the oxidation digestion process from overflowing from the reaction chamber, effectively ensuring the safety of operators and improving the safety performance of the total phosphorus determination reaction device. Moreover, this can enable operators not to take overly strict protective measures, reduce the operation steps of operators during the total phosphorus determination process, and improve the total phosphorus determination efficiency.

[0009] According to some embodiments of the present utility model, the liquid inlet and outlet is arranged at the bottom of the side wall of the reaction chamber.

[0010] According to some embodiments of the present utility model, there are multiple sampling tubes, the number of the liquid inlet and outlets is the same as and corresponds to the number of the sampling tubes one by one, and the multiple liquid inlet and outlets are arranged at intervals along the circumferential direction of the reaction chamber.

[0011] According to some embodiments of the present utility model, the reaction chamber includes a drain cavity bottom and a quantity-maintaining cavity. The drain cavity is conical, the quantity-maintaining cavity is connected above the drain cavity and extends in a direction away from the drain cavity, and the liquid inlet and outlet is opened on the side wall of the drain cavity.

[0012] According to some embodiments of the present utility model, the reactor is made of stainless steel.

[0013] According to some optional embodiments of the present utility model, the total phosphorus determination reaction device further includes: a sampling tube, and the sampling tube penetrates through the cover and extends into the reaction chamber.

[0014] In some optional embodiments of the present utility model, a filter screen is covered at the sampling port of the sampling tube located in the reaction chamber.

[0015] In some optional embodiments of the present utility model, the filter screen is made of stainless steel.

[0016] According to some specific embodiments of the present utility model, the total phosphorus determination reaction device further includes: an ultrasonic device, and the ultrasonic device is arranged on the outer peripheral side of the reactor and is used to emit ultrasonic waves towards the reactor.

[0017] In some specific embodiments of the present utility model, the ultrasonic device is arranged at the bottom of the reactor.

[0018] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Brief Description of the Drawings

[0019] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 is a schematic diagram of a total phosphorus determination reaction device according to some embodiments of the present utility model.

[0021] Reference Numerals:

[0022] 100, total phosphorus determination reaction device;

[0023] 1, reactor; 11, reaction chamber; 111, bottom drain chamber; 112, volume retention chamber; 12, liquid inlet and outlet.

[0024] 2, cover body;

[0025] 3, sampling tube;

[0026] 4, filter screen;

[0027] 5, ultrasonic device;

[0028] 6, housing; 61, installation cavity; 611, second installation space. Detailed Embodiments

[0029] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0030] The total phosphorus determination reaction device 100 according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0031] Refer to Figure 1 , the total phosphorus determination reaction device 100 according to an embodiment of the present utility model includes a reactor 1, a sampling tube and a cover body 2. The reactor 1 defines a reaction chamber 11 having an opening, and a liquid inlet and outlet 12 is provided on the side wall of the reactor 1. The reaction chamber 11 is used to hold the water sample to be tested and to provide an oxidation and digestion space for the water sample to be tested. For example, the reaction chamber 11 can be a glass part, the reaction chamber 11 can also be a ceramic part, and the reaction chamber 11 can also be a stainless steel part.

[0032] The sampling tube has a sampling channel, and the sampling channel is connected to the reaction chamber 11 through the liquid inlet and outlet 12; for example, the sampling tube can be integrally formed with the reactor 1, and the sampling tube can also be detachably connected to the reactor 1. For example, the sampling tube can be a glass part, the sampling tube can also be a ceramic part, and the sampling tube can also be a stainless steel part.

[0033] The cover body 2 covers the opening of the reaction chamber 11. For example, a gasket may be provided between the cover body 2 and the reactor 1. Specifically, the gasket may be a rubber part, and the seal may also be a copper part or an aluminum part.

[0034] When it is necessary to measure the total phosphorus content in the water sample to be measured, the cover body 2 can be first covered on the opening of the reaction chamber 11 to seal the reaction chamber 11, then the water sample to be measured is injected into the reaction chamber 11 through the sampling channel, and then the oxidation digestion reagent is injected into the reaction chamber 11 through the sampling channel. After the oxidation digestion reaction in the reaction chamber 11 is completed, a part of the reacted liquid sample is taken out, and the total phosphorus in the reacted liquid sample is measured.

[0035] When it is necessary to measure the total phosphorus content in the water sample to be measured, the cover body 2 can be first covered on the opening of the reaction chamber 11 to seal the reaction chamber 11, then the oxidation digestion reagent is injected into the reaction chamber 11 through the sampling channel, and then the water sample to be measured is injected into the reaction chamber 11 through the sampling channel. After the oxidation digestion reaction in the reaction chamber 11 is completed, a part of the reacted liquid sample is taken out, and the total phosphorus in the reacted liquid sample is measured.

[0036] Since the cover body 2 seals the opening of the reaction chamber 11, after the water sample to be measured and the oxidation digestion reagent are added to the reaction chamber 11 through the sampling tube, the acid mist generated during the digestion reaction in the reaction chamber 11 can be confined within the reaction chamber 11, thereby reducing the amount of acid mist overflowing from the reaction chamber 11 during the oxidation digestion process or preventing the acid mist generated during the oxidation digestion process from overflowing from the reaction chamber 11, effectively ensuring the safety of the operating personnel and improving the safety performance of the total phosphorus measurement reaction device 100. Moreover, this can enable the operating personnel not to take overly strict protective measures, reduce the operation steps of the operating personnel during the total phosphorus measurement process, and improve the total phosphorus measurement efficiency.

[0037] When it is necessary to measure the total phosphorus content in the water sample to be measured and the water sample to be measured is relatively turbid, the cover body 2 can be first moved to open the opening of the reaction chamber 11, the water sample to be measured is added from the opening of the reaction chamber 11, and then the cover body 2 is used to close the opening of the reaction chamber 11, and the oxidation digestion reagent is added through the sampling channel of the sampling tube 3. After the oxidation digestion reaction in the reaction chamber 11 is completed, a part of the reacted liquid sample is taken out, and the total phosphorus in the reacted liquid sample is measured.

[0038] It should be understood that the turbid water sample to be measured generally contains particulate solids, and the oxidation digestion reagent is generally a relatively pure chemical reagent, such as hydrochloric acid solution and ferrous sulfate solution. Adding the water sample to be measured through the opening of the reaction chamber 11 can prevent large particles in the water sample to be measured from blocking the sampling channel, enabling the water sample to be measured to be reliably added into the reaction chamber 11.

[0039] When the determination of total phosphorus in the water sample to be measured is completed, the reacted liquid sample can be discharged from the reaction chamber 11 through the sample injection channel first, and then a cleaning reagent can be injected through the sample injection channel to eliminate the acid mist and residual liquid in the reaction chamber 11. After that, the cleaned liquid is discharged from the reaction chamber 11 through the sample injection channel. Then, the cover body 2 is opened, and the reaction chamber 11 is cleaned again.

[0040] This can effectively prevent the acid mist from being discharged into the external environment during the cleaning process after the reaction, enabling the operator to be in a relatively good air environment and effectively ensuring the personal safety of the operator.

[0041] According to the total phosphorus determination reaction device 100 of the present invention, by covering the cover body 2 at the opening of the reaction chamber 11 and providing a sample injection tube communicating with the reaction chamber 11 on the side wall of the reaction chamber 11, after covering the reaction chamber 11, the water sample to be measured and the oxidation digestion reagent can be added into the reaction chamber 11 through the sample injection tube, thereby reducing the amount of acid mist overflowing from the reaction chamber 11 during the oxidation digestion process or preventing the acid mist generated during the oxidation digestion process from overflowing from the reaction chamber 11, effectively ensuring the safety of the operator and improving the safety performance of the total phosphorus determination reaction device 100. Moreover, this enables the operator not to take overly strict protective measures, reduces the operation steps of the operator during the total phosphorus determination process, and improves the total phosphorus determination efficiency.

[0042] Refer to Figure 1 , according to some embodiments of the present invention, the liquid inlet / outlet 12 is provided at the bottom of the side wall of the reaction chamber 11. In the digestion reaction process, this can make the liquid level of the water sample to be measured higher than the liquid inlet / outlet 12, blocking the liquid inlet / outlet 12, reducing the amount of acid mist floating out of the total phosphorus determination reaction device 100 through the liquid inlet / outlet 12 and the sample injection channel, or preventing the acid mist from floating out of the total phosphorus determination reaction device 100 through the liquid inlet / outlet 12 and the sample injection channel, ensuring the reliability of the total phosphorus determination reaction device 100. At the same time, this also facilitates the discharge of the liquid in the reaction chamber 11 from the liquid inlet / outlet 12, facilitating the operator to clean the reacted liquid sample, with a simple structure and convenient use.

[0043] Refer to Figure 1 , according to some embodiments of the present invention, there are multiple sample injection tubes, and the number of liquid inlet / outlets 12 is the same as and corresponds to the number of sample injection tubes one by one. The multiple liquid inlet / outlets 12 are arranged at intervals along the circumferential direction of the reaction chamber 11. When there are multiple types of oxidation digestion reagents, the multiple oxidation digestion reagents can be respectively injected into the reaction chamber 11 through multiple sample injection channels, preventing the chemical reaction of the oxidation digestion reagents added successively in the sample injection channel, enabling the oxidation digestion reagent to be reliably added into the reaction chamber 11 to react with the water sample to be measured for oxidation digestion, and improving the reliability of the total phosphorus determination reaction device 100.

[0044] Refer to Figure 1, According to some embodiments of the present utility model, the reaction chamber 11 includes a drainage cavity 111 and a liquid - retaining cavity 112. The drainage cavity 111 is conical, the liquid - retaining cavity 112 is connected above the drainage cavity 111, and the liquid - retaining cavity 112 extends in a direction away from the drainage cavity 111. The liquid inlet and outlet 12 is opened on the side wall of the drainage cavity 111.

[0045] By setting the drainage cavity 111 as conical and opening the liquid inlet and outlet 12 on the side wall of the drainage cavity 111, it is convenient to discharge the reacted liquid sample through the sampling channel. At the same time, the residual amount of the discharged liquid sample can be made less, reducing the usage amount of the cleaning reagent for cleaning the residual liquid sample and saving the measurement cost.

[0046] By connecting the liquid - retaining cavity 112 above the drainage cavity 111 and extending the liquid - retaining cavity 112 in a direction away from the drainage cavity 111, and the liquid - retaining cavity 112 is generally cylindrical, the liquid - retaining cavity 112 can have a larger capacity, enabling the liquid - retaining cavity 112 to meet the required space of the reaction chamber 11 body with a lower height dimension, so that the dimension of the reaction chamber 11 body in the height direction can be set smaller, making the overall structure of the total phosphorus determination reaction device 100 more compact.

[0047] Refer to Figure 1 , According to some embodiments of the present utility model, the reactor 1 is made of stainless steel. Stainless steel has good acid - resistance and alkali - resistance, which can meet the usage requirements of the oxidation digestion reaction; moreover, stainless steel is easy to produce and manufacture, reducing the production cost of the reactor 1; the structure of stainless steel is reliable, which can make the overall structural strength of the reactor 1 higher, effectively reducing the risk of damaging the reactor 1 when the cover body 2 seals the opening of the reaction chamber 11, ensuring the reliability of the reactor 1 and improving the overall performance of the total phosphorus determination reaction device 100.

[0048] Refer to Figure 1 , According to some optional embodiments of the present utility model, the total phosphorus determination reaction device 100 further includes: a sampling tube 3. The sampling tube 3 penetrates through the cover body 2, and one end of the sampling tube 3 extends into the reaction chamber 11. In this way, the liquid sample in the reaction chamber 11 can be sampled through the sampling tube 3, and the cover body 2 does not need to be opened to sample the liquid sample in the reaction chamber 11, improving the convenience of sampling, reducing the risk of acid mist overflow during the sampling process, and improving the reliability of the total phosphorus determination reaction device 100.

[0049] For example, the sampling tube 3 can extend into the liquid - retaining cavity 112. In this way, the sampling tube 3 can take the upper - layer solution of the liquid sample in the reaction chamber 11. This part of the solution is relatively clear, which can avoid blocking the sampling tube 3 by large particles in the taken liquid sample and ensure the reliability of sampling.

[0050] For example, the cover body 2 and the sampling tube 3 can be integrally formed, which can make the sealing effect between the cover body 2 and the sampling tube 3 better, effectively avoid the possibility of acid mist overflowing between the cover body 2 and the sampling tube 3, and improve the reliability of the total phosphorus determination reaction device 100.

[0051] Refer to Figure 1 , in some optional embodiments of the present utility model, a filter net 4 is sealed at the sampling port where the sampling tube 3 is located inside the reaction chamber 11. The filter net 4 can filter large particles in the liquid sample after the reaction, avoid the large particles in the taken liquid sample from blocking the sampling tube 3, ensure the reliability of sampling, and improve the reliability of the total phosphorus determination reaction device 100.

[0052] Refer to Figure 1 , in some optional embodiments of the present utility model, the filter net 4 is made of stainless steel. The stainless steel part has good acid and alkali resistance, which can meet the usage requirements of the oxidation digestion reaction; moreover, the stainless steel part is easy to produce and manufacture, which can reduce the production cost of the filter net 4.

[0053] Refer to Figure 1 , according to some specific embodiments of the present utility model, the total phosphorus determination reaction device 100 further includes: an ultrasonic device 5, the ultrasonic device 5 is arranged on the outer peripheral side of the reactor 1, and the ultrasonic device 5 is used to emit ultrasonic waves towards the reactor 1. In this way, the solid particles in the water sample to be measured can be broken by ultrasonic waves, so that the water sample to be measured and the oxidation digestion reagent can be mixed more fully, promote the reaction efficiency of the water sample to be measured and the oxidation digestion reagent, reduce the reaction time, shorten the time required for total phosphorus determination, improve the total phosphorus determination efficiency, and improve the overall performance of the total phosphorus determination reaction device 100.

[0054] Refer to Figure 1 , in some specific embodiments of the present utility model, the ultrasonic device 5 is arranged at the bottom of the reactor 1. For example, the total phosphorus determination reaction device 100 further includes a housing 6, the housing 6 defines an open installation cavity 61, the reactor 1 is arranged in the installation cavity 61, and the opening direction of the reaction chamber 11 is the same as the opening direction of the installation cavity 61. The reactor 1 defines a first installation space for avoiding the sampling tube 3 in the radial direction with the housing 6, and the bottom of the reactor 1 and the housing 6 define a second installation space 611 for placing the ultrasonic device 5. The cover body 2 is covered on the opening of the installation cavity 61 and seals the opening of the reaction chamber 11.

[0055] This can avoid the sampling tube from interfering with the ultrasonic device 5, make the ultrasonic device 5 can be set closer to the reactor 1, improve the power exerted by the ultrasonic device 5 on the reactor 1, make the power of the ultrasonic device 5 can be selected smaller, reduce the cost of the ultrasonic device 5, and reduce the production cost of the total phosphorus determination reaction device 100.

[0056] In the description of the present utility model, it should be understood that relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0057] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model.

[0058] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0059] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A total phosphorus determination reaction device, characterized in that, include: A reactor defines a reaction chamber having an opening, wherein a liquid inlet and outlet are provided on a side wall of the reactor, and the liquid inlet and outlet are provided at a bottom of the side wall of the reaction chamber; An injection tube having an injection channel, the injection channel being connected to the reaction chamber through the liquid inlet and outlet, and the injection tube and the reactor being integrally formed; The cover body is used to seal the opening of the reaction chamber, and a sealing gasket is sandwiched between the cover body and the reactor.

2. The total phosphorus determination reaction equipment according to claim 1, characterized in that There are multiple sample injection tubes, the number of the liquid inlet and outlet ports is the same as the number of the sample injection tubes and corresponds one to one, and the multiple liquid inlet and outlet ports are arranged at intervals along the circumference of the reaction chamber.

3. The total phosphorus determination reaction equipment according to claim 1, characterized in that The reaction chamber includes a diuretic cavity and a volume retention cavity. The diuretic cavity is conical. The volume retention cavity is connected to the top of the diuretic cavity and extends away from the diuretic cavity. The liquid inlet and outlet are opened on the side wall of the diuretic cavity.

4. The total phosphorus determination reaction equipment according to claim 1, characterized in that The reactor is made of stainless steel.

5. The total phosphorus determination reaction equipment according to any one of claims 1 to 4, characterized in that: Also includes: A sampling tube is provided through the cover and extends into the reaction chamber.

6. The total phosphorus determination reaction equipment according to claim 5, characterized in that The sampling port of the sampling tube located in the reaction chamber is covered with a filter screen.

7. The total phosphorus determination reaction equipment according to claim 6, characterized in that The filter screen is made of stainless steel.

8. The total phosphorus determination reaction equipment according to any one of claims 1 to 4, characterized in that: Also includes: An ultrasonic device is provided on the outer peripheral side of the reactor and is used to generate ultrasonic waves toward the reactor.

9. The total phosphorus determination reaction equipment according to claim 8, characterized in that The ultrasonic device is arranged at the bottom of the reactor.

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