Safe and splash-proof chemical sampling system

Abstract

The utility model relates to a safe and splash-proof chemical sampling system (10), which comprises a chemical storage tank (1) for storing chemicals before sampling; a metering container (2) having a predetermined volume and engraved with metering scales suitable for the chemicals; the chemical reaction tank (3) is used for receiving the sampled chemicals and allowing the sampled chemicals to react with other substances in the chemical reaction tank (3); the first discharge valve (4) is arranged on a pipeline led out of the chemical storage tank (1); and the second discharge valve (5) is arranged on a pipeline led out of the metering container (2) or a pipeline between the metering container (2) and the chemical reaction tank (3). The system can be used for conveniently sampling and metering the chemicals conveyed in the pipeline on the premise of ensuring safe operation.

Description

Technical Field

[0001] The utility model relates to a safe and splash-proof chemical sampling system, in particular to a chemical sampling system with a sampling and metering unit. Background Art

[0002] In chemical production workshops, chemical sampling systems are usually equipped to transport alkali and strong alkali hazardous chemicals. These alkali and strong alkali hazardous chemicals are usually used to neutralize acidic substances such as industrial hydrochloric acid, or to adjust the pH value of alkaline substances such as starch or neutral substances such as waste paint. At present, the discharge of strong alkali solutions is usually achieved by installing a discharge valve on the pipeline.

[0003] However, operations such as adjusting the pH value usually occur frequently, and each discharge only requires a small amount of strong alkaline solution. Therefore, in daily operations, operators need to frequently and repeatedly open and close the discharge valve and collect the strong alkaline solution flowing out of the pipeline through the discharge valve. Since the speed and force of opening and closing the discharge valve each time are different, and the discharge valve will be worn and corroded after repeated use, if the operator is not careful, accidents such as splashing of strong alkaline solution and burning the human body may occur. For the transportation of hazardous chemicals, there are great safety hazards.

[0004] In addition, the collection of strong alkali solutions is also a problem that needs to be solved. At present, various capacities are usually used to collect strong alkali solutions. After collection, the amount of solution collected must be measured, or the strong alkali solution is directly discharged into the concentrated liquid storage tank. The cumbersome operation steps are not only prone to loss, but also reduce the operating efficiency. Once an operational error occurs, the occurrence of safety accidents will be difficult to avoid.

[0005] Therefore, it is necessary to design an improved chemical sampling system, which can conveniently sample and measure chemicals, not only improve work efficiency, but also should not have safety hazards. Utility Model Content

[0006] The utility model aims to provide an improved chemical sampling system, which can conveniently sample and measure the chemicals transported in the pipeline under the premise of ensuring safe operation.

[0007] The utility model relates to a safe and splash-proof chemical sampling system, comprising:

[0008] a chemical storage tank that stores chemicals prior to sampling;

[0009] A metering container having a predetermined volume and formed with metering scales suitable for the type of chemical;

[0010] a chemical reaction tank, which receives the sampled chemical and allows it to react with a substance to be neutralized in the chemical reaction tank;

[0011] a first discharge valve disposed on a pipeline leading from a chemical storage tank; and

[0012] The second discharge valve is arranged on a pipeline leading from the metering container or in a pipeline between the metering container and the chemical reaction tank.

[0013] In the above technical solution, the so-called "measurement scale applicable to chemicals" means that when the chemical is a liquid preparation, its volume usually needs to be measured. In this case, the "measurement scale applicable to chemicals" is a measurement scale that indicates the volume of the chemical. However, when the chemical is a non-liquid preparation, or although the chemical is a liquid preparation, other characteristic indicators other than volume need to be measured, the "measurement scale applicable to chemicals" may also be other measurement scales based on the corresponding indicators, depending on the nature of the chemical to be measured.

[0014] The term "substance to be neutralized" refers to a substance to be reacted with a chemical to undergo a neutralization reaction.

[0015] Although the above technical solution does not explicitly state that the above system also includes at least one pipeline, it is well known to those skilled in the art that the system is composed of various components connected together by one or more pipelines. Since the nature of the pipeline itself is not the inventive point of the utility model, it is not necessary to explicitly write it into the technical solution.

[0016] Preferably, the measuring container may have a funnel shape, and the predetermined volume may be 5 liters.

[0017] By designing the metering container into a funnel shape, it can be ensured that the inlet area of ​​the funnel is much larger than the outlet of the pipeline or the cross-sectional area of ​​the sampling tube, thereby preventing the strong alkaline solution from splashing and burning the human body, and basically eliminating safety hazards.

[0018] More preferably, the metering container may be made of a transparent or translucent material.

[0019] The transparent material is preferably glass, and the translucent material is preferably white plastic material.

[0020] The measuring container made of transparent or translucent material not only has low manufacturing cost, but also allows the operator to directly observe the liquid level of the strong alkaline solution inside the measuring container, so that the operator can accurately understand the amount of the strong alkaline solution inside the measuring container.

[0021] In another preferred embodiment, the metering container may be removable in the chemical sampling system.

[0022] By replacing the measuring container, the type of scale formed on the measuring container can be changed, thereby adapting to other characteristic indicators to be measured and increasing the flexibility of measurement.

[0023] In yet another preferred embodiment, a first sampling tube may be further included, and the first sampling tube is disposed at an outlet of a pipeline leading from the chemical storage tank and downstream of the first discharge valve.

[0024] More preferably, the first sampling tube can be a curved tube with a nominal diameter of 25 mm.

[0025] By arranging a sampling tube in the pipeline leading out from the chemical storage tank, the strong alkaline solution can be better guided into the measuring container without causing accidents such as burns to the human body due to splashing of the strong alkaline solution.

[0026] In yet another preferred embodiment, a second sampling tube may be further included. When the second discharge valve is disposed on the pipeline leading from the metering container, the second sampling tube is disposed at the outlet of the pipeline leading from the metering container and downstream of the second discharge valve.

[0027] By arranging a sampling tube in the pipeline leading out from the metering container, the metered strong alkali solution can be better guided into the chemical reaction tank without causing accidents such as burns to the human body due to splashing of the strong alkali solution.

[0028] Alternatively, when the second discharge valve is disposed in the pipeline between the metering container and the chemical reaction tank, the second sampling tube may be disposed in the pipeline between the metering container and the chemical reaction tank and downstream of the second discharge valve.

[0029] By replacing the semi-open discharge environment with a sealed discharge environment, the entire discharge process can be safely carried out in the sealed environment of the chemical sampling system, avoiding the possibility of operational errors.

[0030] More preferably, the second sampling tube can be a curved tube with a nominal diameter of 40 mm.

[0031] In the above embodiment, the chemical may be sodium hydroxide or other strong alkaline substances.

[0032] In the above embodiment, the chemical storage tank and the metering container may be arranged in a relatively high area, and the chemical reaction tank may be arranged in a relatively low area.

[0033] The terms "relatively high zone" and "relatively low zone" are defined with reference to each other. In other words, the chemical storage tank and the metering container can be arranged at a higher position than the chemical reaction tank to utilize the gravity of the chemical itself to make it flow downward.

[0034] The chemical sampling system according to the utility model can obtain the following advantages:

[0035] (i) The above-mentioned chemical sampling system can significantly reduce the frequency of operators manually opening and closing the discharge valve by configuring the funnel-shaped measuring container, and minimize the occurrence of strong alkaline solution splashing caused by the difference in speed and force when opening and closing the discharge valve, thereby avoiding burns to the human body and basically eliminating safety hazards.

[0036] (ii) Since the funnel-shaped metering container is engraved with metering scales, the operator can immediately know the amount of strong alkaline solution received by the metering container after opening the first discharge valve to discharge the solution. This is particularly convenient for small-scale and multiple operations such as adjusting the pH value of starch or the pH value of waste paint, thereby improving operating efficiency.

[0037] (iii) By arranging a second discharge valve between the funnel-shaped metering container and the chemical reaction tank, leakage in the chemical sampling system can be avoided, thereby significantly reducing the loss rate of chemicals.

[0038] (iv) After the strong alkali solution is accurately measured, the strong alkali solution is allowed to enter the chemical reaction tank through the second discharge valve, and then reacts with the substance to be neutralized in the chemical reaction tank. The entire discharge process is carried out safely in the sealed environment of the chemical sampling system, avoiding the possibility of operational errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to further illustrate the technical effect of the chemical sampling system according to the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings and specific implementation methods, wherein:

[0040] Figure 1 The layout of the first preferred embodiment of the chemical sampling system of the present invention is schematically shown; and

[0041] Figure 2 The layout of the second preferred embodiment of the chemical sampling system of the present invention is schematically shown.

[0042] Reference numerals

[0043] 1 Chemical Storage Tank

[0044] 2 Measuring container

[0045] 3 Chemical reaction tank

[0046] 4 First discharge valve

[0047] 5 Second drain valve

[0048] 6 First sampling tube

[0049] 7 Second sampling tube

[0050] 10 Chemical Sampling System DETAILED DESCRIPTION

[0051] The layout and technical effects of the chemical sampling system 10 according to the present invention are described below with reference to the accompanying drawings.

[0052] It should be clear that the embodiments described in this specification only cover some embodiments of the utility model, not all embodiments. Based on the embodiments recorded in the specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0053] Unless otherwise defined in the invention content section of the specification, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0054] In the description of the present invention, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0055] In the description of the present invention, the terms "first" and "second" are only used to distinguish the same devices or elements, and do not indicate or imply that the devices or elements referred to must have a specific arrangement order, or must be arranged and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In fact, if the names of the above devices or elements are interchanged, it will not cause any undesirable limitation to the protection scope of the present invention.

[0056] (First preferred embodiment)

[0057] Figure 1 The layout of a first preferred embodiment of a chemical sampling system 10 according to the present invention is shown.

[0058] like Figure 1As shown, the chemical sampling system 10 at least includes: a chemical storage tank 1, which stores chemicals before sampling; a metering container 2, which has a predetermined volume and is formed with a metering scale suitable for the type of chemical; a chemical reaction tank 3, which receives the sampled chemicals and allows them to react with the substance to be neutralized in the chemical reaction tank; a first discharge valve 4, which is arranged on a pipeline leading from the chemical storage tank 1; and a second discharge valve 5, which is arranged on a pipeline leading from the metering container 2.

[0059] The above-mentioned chemical is usually sodium hydroxide, but it can also be other strong alkaline substances. Of course, neutral substances with a pH value of 7 or acidic substances with a pH value of less than 7 can also be used as the above-mentioned chemical according to actual conditions.

[0060] The chemical storage tank 1 is generally in the shape of a box, and its volume can be designed to be relatively large as required. For example, the volume of the chemical storage tank 1 can be 316 liters. Of course, it is also feasible to design the chemical storage tank 1 in a barrel shape. Such variations should all fall within the scope of protection of the present utility model.

[0061] The measuring container 2 has an open funnel shape, and a measuring scale is engraved on the funnel portion. For example, in a preferred embodiment, the measuring container 2 is in the shape of a funnel with an upper opening larger than a lower opening, and its size is 32 cm×40 cm, the maximum measuring scale is 5 liters, and the minimum measuring scale is 0.1 liter. The measuring container 2 is made of a transparent or translucent material. For example, the measuring container 2 can be made of a transparent glass material or a translucent white plastic.

[0062] The measuring container 2 made of transparent or translucent material not only has low manufacturing cost, but also allows the operator to directly observe the liquid level of the strong alkaline solution inside the measuring container 2, so that the operator can accurately understand the amount of the strong alkaline solution inside the measuring container 2.

[0063] The measuring container 2 is detachable in the chemical sampling system 10. Thus, by replacing the measuring container 2, the type of scale engraved on the measuring container 2 can be changed, thereby adapting to other characteristic indicators to be measured, and increasing the flexibility of measurement.

[0064] The chemical reaction tank 3 can be designed to be open or closed according to actual conditions. It can be a box with the same size and material as the chemical storage tank 1 , or a box with a smaller volume than the chemical storage tank 1 .

[0065] In the above embodiment, the chemical storage tank 1 and the metering container 2 are arranged in a relatively high area, such as the second floor, while the chemical reaction tank 3 is arranged in a relatively low area, such as the first floor. By arranging the chemical storage tank 1 and the metering container 2 at a higher position than the chemical reaction tank 3, the gravity of the chemical itself can be used to make it flow downward, so there is no need to provide additional power.

[0066] The first discharge valve 4 and the second discharge valve 5 may be check valves, or any other type of valves capable of opening and closing the flow of fluid in the pipelines in which they are installed.

[0067] In the above embodiment, the first discharge valve 4 and the second discharge valve 5 are DN25 type valves, or stainless steel hand valves. Changes in valve material, shape, size, and purpose will not impose any restrictions on the protection scope of the present utility model.

[0068] Please continue to see Figure 1 A first sampling tube is provided at a position indicated by reference numeral 6 in the figure. Specifically, the first sampling tube 6 is provided at the outlet of the pipeline leading out from the chemical storage tank 1 and downstream of the first discharge valve 4.

[0069] The first sampling tube 6 is designed as a curved tube, and its nominal diameter is selected to be 25 mm. That is to say, the type of the first sampling tube 6 is also DN25. Obviously, changes in the material, shape, size, and purpose of the sampling tube will not impose any restrictions on the protection scope of the present utility model.

[0070] By arranging a sampling tube in the pipeline leading out from the chemical storage tank 1, the strong alkaline solution can be better guided into the metering container 2 without causing accidents such as burns to the human body due to splashing of the strong alkaline solution.

[0071] exist Figure 1 A second sampling tube is also provided at the position indicated by reference numeral 7. Figure 1 As shown, similar to the first sampling tube 6, the second sampling tube 7 is arranged at the outlet of the pipeline leading from the metering container 2 and downstream of the second discharge valve 5. At this time, the chemical reaction tank 3 is open to collect the strong alkaline solution from the metering container 2.

[0072] By arranging a sampling tube in the pipeline leading out from the metering container 2, the metered strong alkaline solution can be better guided into the chemical reaction tank 3 without causing accidents such as burns to the human body due to splashing of the strong alkaline solution.

[0073] The second sampling tube 7 is also designed as a curved tube, and its nominal diameter is selected to be 40 mm. That is, the type of the second sampling tube 7 is DN40. Obviously, changes in the material, shape, size, and purpose of the sampling tube will not impose any restrictions on the protection scope of the present utility model.

[0074] (Second preferred embodiment)

[0075] Figure 2 The layout of the second preferred embodiment of the chemical sampling system 10 according to the present invention is shown.

[0076] In the figure, the same reference numerals as those in the first embodiment are used to identify the same components as those in the first embodiment. For the purpose of simplicity, these same components will not be described again this time.

[0077] Compared with the first embodiment, the second embodiment of the chemical sampling system 10 of the utility model is different in that it is in a sealed discharge environment, which is different from the semi-open discharge environment in the first embodiment.

[0078] Specifically, the discharge end of the second sampling tube 7 located at the outlet of the pipeline leading from the metering container 2 is directly connected to the chemical reaction tank 3, so that a sealed discharge environment is formed between the metering container 2 and the chemical reaction tank 3. In other words, the second discharge valve 5 is arranged on the pipeline between the metering container 2 and the chemical reaction tank 3. Similarly, the chemical reaction tank 3 is designed to be fully enclosed. In this way, the entire discharge process of collecting the strong alkaline solution from the metering container 2 is safely carried out in the sealed environment of the chemical sampling system, avoiding the possibility of operating errors.

[0079] In actual use, the operator first opens the first discharge valve 4 and closes the second discharge valve 5, and then discharges a strong alkaline solution such as NaOH from the chemical storage tank 1. The strong alkaline solution is discharged from the outlet of the chemical storage tank 1 through the pipeline leading from the chemical storage tank 1 to the funnel-shaped metering container 2 located directly below it. As the strong alkaline solution continues to fall into the funnel-shaped metering container 2, its liquid level continues to rise. The operator reads the reading in real time by observing the scale engraved on the metering container 2, and determines whether it is necessary to discharge the solution to the metering container 2 according to the actual situation.

[0080] After a sufficient amount of strong alkali solution enters the metering container 2, the operator closes the first discharge valve 4. After confirming that the chemical reaction tank 3 has contained the chemical to be reacted with the strong alkali solution, the operator opens the second discharge valve 5, so that the strong alkali solution in the funnel-shaped metering container 2 is discharged from the outlet to the chemical reaction tank 3 directly below it through the pipeline leading from the metering container 2, or enters the chemical reaction tank 3 through the pipeline between the metering container 2 and the chemical reaction tank 3, and reacts with the chemical to be reacted in the chemical reaction tank 3, such as neutralization reaction.

[0081] Although the structure of the chemical sampling system according to the utility model is described above in combination with several preferred embodiments and drawings, ordinary technicians in the technical field should recognize that the above examples are only used for illustration and cannot be used as limitations of the utility model. Therefore, the utility model can be modified and varied within the spirit of the claims, and these modifications and variations will fall within the scope required by the claims of the utility model.

Claims

1. A safe and splash-proof chemical sampling system (10), characterized in that: include: A chemical storage tank (1), wherein the chemical storage tank (1) stores chemicals before sampling; A metering container (2), the metering container (2) having a predetermined volume and having a metering scale suitable for the type of chemical; A chemical reaction tank (3), the chemical reaction tank (3) receiving the sampled chemical and allowing the sampled chemical to react with the substance to be neutralized in the chemical reaction tank (3); a first discharge valve (4), the first discharge valve (4) being arranged on a pipeline leading out from the chemical storage tank (1); as well as A second discharge valve (5), the second discharge valve (5) is arranged on a pipeline leading from the metering container (2) or in a pipeline between the metering container (2) and the chemical reaction tank (3).

2. The system (10) according to claim 1, characterized in that The metering container (2) has a funnel shape, and the predetermined volume is 5 liters.

3. The system (10) according to claim 2, characterized in that The metering container (2) is made of a transparent or translucent material.

4. The system (10) according to claim 2, characterized in that The metering container (2) is detachable in the chemical sampling system (10).

5. The system (10) according to claim 1, characterized in that It also comprises a first sampling pipe (6), which is arranged at the outlet of the pipeline leading out from the chemical storage tank (1) and downstream of the first discharge valve (4).

6. The system (10) according to claim 5, characterized in that The first sampling tube (6) is a curved tube with a nominal diameter of 25 mm.

7. The system (10) according to claim 1, characterized in that It also includes a second sampling tube (7), which is arranged at the outlet of the pipeline leading from the metering container (2) or on the pipeline between the metering container (2) and the chemical reaction tank (3), and is downstream of the second discharge valve (5).

8. The system (10) according to claim 7, characterized in that The second sampling tube (7) is a curved tube with a nominal diameter of 40 mm.

9. The system (10) according to any one of claims 1 to 8, characterized in that The chemical is sodium hydroxide.

10. The system (10) according to any one of claims 1 to 8, characterized in that The chemical storage tank (1) and the metering container (2) are arranged in a relatively high area, while the chemical reaction tank (3) is arranged in a relatively low area.

Images