CN216082793U - Air exhaust pipe sealing connection structure and quantitative device of chemical oxygen demand detector in water - Google Patents
Air exhaust pipe sealing connection structure and quantitative device of chemical oxygen demand detector in water Download PDFInfo
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- CN216082793U CN216082793U CN202121768627.3U CN202121768627U CN216082793U CN 216082793 U CN216082793 U CN 216082793U CN 202121768627 U CN202121768627 U CN 202121768627U CN 216082793 U CN216082793 U CN 216082793U
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Abstract
The utility model relates to a gas extraction pipe sealing connection structure and a quantifying device of a chemical oxygen demand detector in water, comprising: the left connecting pipe is provided with a hollow inner cavity, one end of the right connecting pipe is suitable for being inserted into the hollow inner cavity of the left connecting pipe, and a sealing element is sleeved on the outer side of the joint of the left connecting pipe and the right connecting pipe; wherein, the outer side wall of the end part of the left connecting pipe connected with the right connecting pipe is provided with a plurality of annular bulges; and the sealing element is made of elastic material. The utility model can improve the sealing performance of the connection between the exhaust tube and the quantitative bottle of the quantitative device of the chemical oxygen demand detector in water.
Description
Technical Field
The utility model relates to the technical field of detection instruments, in particular to a gas extraction pipe sealing connection structure and a quantifying device of a chemical oxygen demand detector in water.
Background
Chemical Oxygen Demand (COD) is an important organic pollution parameter that can be quickly measured and is often represented by the symbol COD, and is one of the main indicators of water pollution and an important item for monitoring water quality of surface water, industrial wastewater, drinking water, hospital wastewater, seawater, etc. in the research of river pollution and industrial wastewater properties and the operation management of wastewater treatment plants, the COD (chemical Oxygen demand) is an important index for measuring the amount of reducing substances to be oxidized in a water sample by a chemical method.
The quantitative structure cannot be separated in the process of detecting the chemical oxygen demand in the water sample, and in the quantitative operation process, a negative pressure environment needs to be formed on the quantitative bottle through the exhaust tube so that liquid can enter the quantitative bottle, and under the condition, the sealing performance of the connection between the exhaust tube and the quantitative bottle directly influences the forming effect of the negative pressure environment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a sealing connection structure of an exhaust pipe, which aims to solve the technical problem of improving the sealing property of the connection part of the exhaust pipe and other parts.
The second purpose of the utility model is to provide a quantifying device of a detector for chemical oxygen demand in water, which is used for solving the technical problem of improving the sealing property of the joint of an exhaust pipe and a quantifying bottle of the detector for chemical oxygen demand in water.
The utility model discloses an exhaust tube, which is realized by the following steps:
an extraction duct comprising: the left connecting pipe is provided with a hollow inner cavity, one end of the right connecting pipe is suitable for being inserted into the hollow inner cavity of the left connecting pipe, and a sealing element is sleeved on the outer side of the joint of the left connecting pipe and the right connecting pipe; wherein
A plurality of annular bulges are arranged on the outer side wall of the end part of the left connecting pipe connected with the right connecting pipe; and
the sealing element is made of elastic materials.
In an alternative embodiment of the present invention, the left connecting tube is made of a glass material, and the right connecting tube is made of a plastic material.
In an optional embodiment of the present invention, an inner diameter of the hollow inner cavity of the left connecting pipe is smaller than an outer diameter of the right connecting pipe, so that the right connecting pipe and the left connecting pipe are in interference insertion fit.
In an alternative embodiment of the present invention, the elastic material of the sealing member is rubber.
In an optional embodiment of the utility model, three annular protrusions are arranged on the outer side wall of the end part of the left connecting pipe connected with the right connecting pipe; and
the three annular protrusions are arranged at intervals along the axial direction of the left connecting pipe.
The utility model relates to a quantitative device of a detector for chemical oxygen demand in water, which is realized by the following steps:
a dosing device of a detector for chemical oxygen demand in water comprises: the quantitative bottle, a liquid storage container connected with the quantitative bottle through a connecting pipeline, an air pump connected with the quantitative bottle through an air exhaust pipe, and a two-way valve connected with the quantitative bottle through a connecting pipeline; wherein
The air exhaust pipe is in a sealing connection structure with the quantitative bottle;
the left connecting pipe of the exhaust pipe sealing connection structure is connected with the quantitative bottle, and the right connecting pipe of the exhaust pipe sealing connection structure is connected with the exhaust pipe.
In an alternative embodiment of the present invention, a three-way valve is further disposed on the right connection pipe.
In an alternative embodiment of the utility model, the dosing bottle comprises: the first cylindrical part, the first spherical part, the second cylindrical part and the second spherical part are coaxially connected from top to bottom in sequence; wherein
The inner diameter of the first cylindrical portion is larger than that of the second cylindrical portion;
the inner diameter of the first spherical part is larger than that of the second spherical part; and
the side wall of the first cylindrical part is provided with a first connecting port communicated with the inner cavity of the first cylindrical part, the side wall of the second cylindrical part is provided with a second connecting port communicated with the inner cavity of the second cylindrical part, and the side wall of the second spherical part is provided with a third connecting port communicated with the inner cavity of the second spherical part.
In an alternative embodiment of the present invention, the liquid storage container is connected to the second connection port;
the exhaust pipe is matched and connected with the first connecting port; and
and the two-way valve is connected with the third connecting port.
In an optional embodiment of the present invention, the left connecting pipe is in plug-in fit with the first connecting port, and a sealing ring is further disposed between an outer side wall of the left connecting pipe and the first connecting port.
Compared with the prior art, the embodiment of the utility model has the following beneficial effects: according to the air exhaust pipe sealing connection structure and the quantifying device of the detector for the chemical oxygen demand in water using the same, the air exhaust pipe is in an interference fit structure, and a sealing element sleeved outside the interference fit position is matched to further strengthen the sealing effect of the connection position, so that the integral air tightness of the air exhaust pipe is effectively ensured.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic overall structural view of an alternative implementation of a sealed connection structure of an exhaust pipe provided in embodiment 1 of the present invention;
FIG. 2 is a schematic overall structure diagram of another alternative implementation of the sealing connection structure of the extraction pipe provided by the embodiment 1 of the utility model;
FIG. 3 is a schematic view showing the structure of a quantitative device of a chemical oxygen demand detector for water according to example 2 of the present invention;
fig. 4 is a schematic structural diagram of a quantitative bottle of a quantitative device of a chemical oxygen demand detector in water according to embodiment 2 of the present invention.
In the figure: the device comprises a first cylindrical part 1, a first spherical part 2, a second cylindrical part 3, a second spherical part 5, an exhaust pipe 100, a left connecting pipe 101, a right connecting pipe 102, a sealing element 103, an annular bulge 104 and an annular convex step 105.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Example 1:
referring to fig. 1 and 2, the present embodiment provides a sealed connection structure of an exhaust pipe, including: a left connecting pipe 101 having a hollow inner cavity, a right connecting pipe 102 having one end adapted to be inserted into the hollow inner cavity of the left connecting pipe 101, and a sealing member 103 sleeved outside a connection of the left connecting pipe 101 and the right connecting pipe 102; wherein, a plurality of annular protrusions 104 are arranged on the outer side wall of the end part of the left connecting pipe 101 connected with the right connecting pipe 102; and the sealing member 103 is made of an elastic material. The elastic material of the sealing member 103 is, for example, but not limited to, rubber.
Next, in an alternative embodiment, for example, the left connecting tube 101 is made of glass, and the right connecting tube 102 is made of plastic. On the basis of the structure, the inner diameter of the hollow inner cavity of the left connecting pipe 101 is smaller than the outer diameter of the right connecting pipe 102, so that the right connecting pipe 102 and the left connecting pipe 101 are in interference insertion fit.
In the embodiment, in consideration of the sealing effect of the sealing member 103 on the joint of the left connecting pipe 101 and the right connecting pipe 102, three annular protrusions 104 are arranged on the outer side wall of the end of the left connecting pipe 101 connected with the right connecting pipe 102; and three annular protrusions 104 are arranged at intervals along the axial direction of the left connection pipe 101, so that a gap suitable for the sealing member 103 to be inserted is formed between every two adjacent annular protrusions 104, and thus the sealing member 103 and the left connection pipe 101 are deeply matched.
On the basis of the above structure, in another alternative embodiment, three annular convex steps 105 are provided on the outer side wall of the end portion of the right connection pipe 102 connected with the left connection pipe 101, and the three annular convex steps 105 are arranged at intervals along the axial direction of the right connection pipe 102, so that a gap suitable for the sealing member 103 to be embedded is formed between every two adjacent annular convex steps 105, and thus the sealing member 103 and the right connection pipe 102 are deeply matched.
In summary, for the sealing connection structure of the exhaust tube of the present embodiment, on the basis that the left connection tube 101 and the right connection tube 102 are in interference fit, the sealing element 103 is made of an elastic material to further improve the sealing performance at the joint of the left connection tube 101 and the right connection tube 102, so as to fully ensure the good air tightness of the sealing connection structure of the exhaust tube.
Example 2:
referring to fig. 1 to 4, this embodiment provides a dosing device of a chemical oxygen demand detector in water based on the sealing connection structure of the extraction pipe in embodiment 1, including: the device comprises a dosing bottle D, a liquid storage container M connected with the dosing bottle D through a connecting pipeline, an air pump connected with the dosing bottle D through an air exhaust pipe 100, and a two-way valve connected with the dosing bottle D through a connecting pipeline; wherein, the air exhaust pipe 100 and the quantitative bottle D are connected in a sealing way by adopting an air exhaust pipe.
In detail, the left connection pipe 101 of the air pumping pipe sealing connection structure is connected to the dosing bottle D, and the right connection pipe 102 of the air pumping pipe sealing connection structure is connected to the air pumping pipe 100. It should be noted that, in the attached drawings, the connection lines respectively connected to the liquid storage container M and the two-way valve Y2 are two different lines, and the two lines are relatively independent from each other without a direct connection relationship, and each of the two lines plays a role in flowing liquid. Further, a three-way valve Y1 is provided on the right connection pipe 102.
The quantification vial D employed in this embodiment includes: the first cylindrical part 1, the first spherical part 2, the second cylindrical part 3 and the second spherical part 5 are coaxially connected from top to bottom in sequence; wherein the inner diameter of the first cylindrical portion 1 is larger than the inner diameter of the second cylindrical portion 3; the inner diameter of the first spherical portion 2 is larger than the inner diameter of the second spherical portion 5; and a first connecting port communicated with the inner cavity of the first cylindrical part 1 is arranged on the side wall of the first cylindrical part, a second connecting port communicated with the inner cavity of the second cylindrical part 3 is arranged on the side wall of the second cylindrical part, and a third connecting port communicated with the inner cavity of the second spherical part 5 is arranged on the side wall of the second spherical part.
On the basis of the structure, the liquid storage container M is connected with the second connecting port; the exhaust tube 100 is connected with the first connection port; and the two-way valve Y2 is connected to the third connection port.
Left connecting pipe 101 is connected with first interface, and under an optional implementation, the ration bottle D of this embodiment also adopts the glass material to make, under such circumstances, can be so that left connecting pipe 101 and ration bottle D adopt integrated into one piece's structure, and left connecting pipe 101 links firmly with ration bottle D promptly and forms an overall structure. The right connecting pipe 102 is connected to the ventilation pipe 100, and here, the right connecting pipe 102 and the suction pipe 100 may be integrally formed, so that the right connecting pipe 102 and the ventilation pipe 100 are fixedly connected to form an integral structure. In summary, the air exhaust tube sealing connection structure of embodiment 1 is adopted to realize the sealing connection between the quantitative bottle D and the air exhaust tube 100.
In summary, the specific usage principle of the quantitative device of the detector for chemical oxygen demand in water in this embodiment is as follows: start air pump P, open three-way valve Y1 simultaneously and bleed to quantitative bottle D, the inside negative pressure that forms of quantitative bottle D, liquid gets into quantitative bottle D through with quantitative bottle D connecting tube in the stock solution container M, reaches a certain amount back air pump P and connects three-way valve Y1 stop work, and the external gas gets into quantitative bottle D through three-way valve Y1 normal open, and unnecessary liquid then gets back to through siphon phenomenon and accomplishes the ration in flourishing liquid container M in the quantitative bottle D.
In the above process, realize the "bridge" effect between first spherical portion 22 and the second spherical portion 55 through second cylinder portion 33 for liquid smoothly circulates between two spherical portions, and first cylinder portion 11, first spherical portion 22, second cylinder portion 33 and second spherical portion 55 are the structure of coaxial distribution, the smoothness degree that liquid circulated between different parts has also been improved, on this structure basis, the unnecessary liquid in the quantification bottle D of being convenient for can also return into liquid storage container M through second spherical portion 55, make liquid can not remain in quantification bottle D and influence the precision when quantification bottle D uses.
The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (10)
1. The utility model provides an exhaust tube sealing connection structure which characterized in that includes: the left connecting pipe is provided with a hollow inner cavity, one end of the right connecting pipe is suitable for being inserted into the hollow inner cavity of the left connecting pipe, and a sealing element is sleeved on the outer side of the joint of the left connecting pipe and the right connecting pipe; wherein
A plurality of annular bulges are arranged on the outer side wall of the end part of the left connecting pipe connected with the right connecting pipe; and
the sealing element is made of elastic materials.
2. The exhaust tube sealing connection structure according to claim 1, wherein the left connection tube is made of a glass material, and the right connection tube is made of a plastic material.
3. The extraction tube sealing connection structure according to claim 2, wherein the inner diameter of the hollow inner cavity of the left connecting tube is smaller than the outer diameter of the right connecting tube, so that the right connecting tube and the left connecting tube are in interference fit.
4. The exhaust tube sealing connection structure according to any one of claims 1 to 3, wherein the elastic material of the sealing member is rubber.
5. The extraction tube sealing connection structure according to claim 1, wherein three annular protrusions are provided on an outer side wall of an end portion of the left connection tube connected to the right connection tube; and
the three annular protrusions are arranged at intervals along the axial direction of the left connecting pipe.
6. A dosing device of a detector for chemical oxygen demand in water is characterized by comprising: a quantitative bottle,
The liquid storage container is connected with the quantitative bottle through a connecting pipeline, the air pump is connected with the quantitative bottle through an air exhaust pipe, and the two-way valve is connected with the quantitative bottle through a connecting pipeline; wherein
The air exhaust pipe and the quantitative bottle are in a sealing connection structure according to any one of claims 1 to 5;
the left connecting pipe of the exhaust pipe sealing connection structure is connected with the quantitative bottle, and the right connecting pipe of the exhaust pipe sealing connection structure is connected with the exhaust pipe.
7. The apparatus of claim 6, wherein a three-way valve is further disposed on the right connecting tube.
8. The apparatus of any one of claims 6 or 7, wherein the quantitative bottle comprises: the first cylindrical part, the first spherical part, the second cylindrical part and the second spherical part are coaxially connected from top to bottom in sequence; wherein
The inner diameter of the first cylindrical portion is larger than that of the second cylindrical portion;
the inner diameter of the first spherical part is larger than that of the second spherical part; and
the side wall of the first cylindrical part is provided with a first connecting port communicated with the inner cavity of the first cylindrical part, the side wall of the second cylindrical part is provided with a second connecting port communicated with the inner cavity of the second cylindrical part, and the side wall of the second spherical part is provided with a third connecting port communicated with the inner cavity of the second spherical part.
9. The apparatus according to claim 8, wherein the liquid storage container is connected to the second connection port;
the exhaust pipe is matched and connected with the first connecting port; and
and the two-way valve is connected with the third connecting port.
10. The apparatus of claim 9, wherein the left connecting tube is engaged with the first connector, and a sealing ring is disposed between an outer sidewall of the left connecting tube and the first connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121768627.3U CN216082793U (en) | 2021-07-31 | 2021-07-31 | Air exhaust pipe sealing connection structure and quantitative device of chemical oxygen demand detector in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121768627.3U CN216082793U (en) | 2021-07-31 | 2021-07-31 | Air exhaust pipe sealing connection structure and quantitative device of chemical oxygen demand detector in water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216082793U true CN216082793U (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121768627.3U Active CN216082793U (en) | 2021-07-31 | 2021-07-31 | Air exhaust pipe sealing connection structure and quantitative device of chemical oxygen demand detector in water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216082793U (en) |
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2021
- 2021-07-31 CN CN202121768627.3U patent/CN216082793U/en active Active
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