CN111947985A - Pneumatic sealed sampling device for sewage detection - Google Patents
Pneumatic sealed sampling device for sewage detection Download PDFInfo
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- CN111947985A CN111947985A CN202010796664.9A CN202010796664A CN111947985A CN 111947985 A CN111947985 A CN 111947985A CN 202010796664 A CN202010796664 A CN 202010796664A CN 111947985 A CN111947985 A CN 111947985A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the field of environment-friendly equipment, in particular to a pneumatic sealed sampling device for sewage detection, which comprises a sampling shell, wherein a cylindrical cavity is formed in the inner side of the sampling shell, a second air bag is arranged in the cylindrical cavity, the upper end of the second air bag is connected with a first connecting air pipe, an annular cavity is formed in the outer side of the cylindrical cavity, a plurality of first air bags are arranged in the annular cavity, a plurality of sampling ports corresponding to the first air bags are circumferentially distributed on the sampling shell between the annular cavity and the cylindrical cavity, the upper end of each first air bag is connected with a branch air pipe, the branch air pipes are connected with an annular pipe arranged at the upper part of the annular cavity, a second connecting air pipe is also connected onto the annular pipe, the second connecting air pipe and the first connecting air pipe are both connected with a positive and negative pressure device, and a water outlet. The invention has novel structure and better sampling accuracy, and improves the accuracy of subsequent sewage detection.
Description
Technical Field
The invention relates to the field of environmental protection equipment, in particular to a pneumatic sealed sampling device for sewage detection.
Background
Sewage treatment is a process of purifying sewage to meet the requirement of discharging the sewage into a certain water body or reusing the sewage. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people.
Before the sewage treatment process, often need to sample sewage, but current sampling device structure is traditional, and the accuracy of sample is relatively poor, has reduced follow-up sewage detection's accuracy. Therefore, in view of the above situation, there is an urgent need to develop a pneumatic sealed sampling device for sewage detection to overcome the shortcomings in the current practical application.
Disclosure of Invention
An embodiment of the present invention provides a pneumatic sealed sampling device for sewage detection, so as to solve the problems in the background art.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
a sampling device for pneumatic sealed sewage detection comprises a sampling shell, wherein a sealed cylindrical cavity is formed in the inner side of the sampling shell, a second air bag is arranged in the cylindrical cavity, the upper end of the second air bag is connected with a first connecting air pipe, a lower-opening annular cavity is formed in the outer side of the cylindrical cavity, a sealing screen plate is arranged at the lower end of the annular cavity, a plurality of first air bags are circumferentially distributed in the annular cavity, a plurality of sampling ports corresponding to the first air bags are circumferentially distributed in the sampling shell between the annular cavity and the cylindrical cavity, the first air bags and the second air bags can seal the sampling ports, a branch air pipe is connected with the upper end of each first air bag, the branch air pipes are connected with an annular pipe arranged at the upper part of the annular cavity, a second connecting air pipe is further connected on the annular pipe, and the second connecting air pipe and the first connecting air pipe are both connected with a positive-negative, and the positive and negative pressure device is used for respectively controlling the air pressure of the first air bag and the air pressure of the second air bag, and the top of the sampling shell is also provided with a water outlet communicated with the cylindrical cavity.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
the pneumatic sealed sampling device for sewage detection can control the expansion of the first air bag and the second air bag to seal a sampling port initially under the action of a positive and negative pressure device, and then place a sampling shell in sewage at a specified depth; when sampling, the first air bag and the second air bag can be controlled to contract simultaneously under the action of the positive and negative pressure device, the first air bag and the second air bag are both separated from the sampling port, at the moment, sewage in the annular cavity can enter the cylindrical cavity through the sampling port, and the contraction of the second air bag has a negative pressure suction effect, so that the sewage can enter the cylindrical cavity more quickly; after sampling is finished, the second air bag can be controlled to keep a sampling contraction state under the action of the positive and negative pressure device, the first air bag is controlled to expand to seal the sampling port, the sampling shell is taken out, and then the sampled sewage can be discharged from the water outlet, so that the sampling device is convenient and quick; in addition, through the setting of sealing the otter board, can block debris to can not cause the influence to the sample detection of sewage, be worth popularizing and applying.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic sectional view taken along the direction a-a in fig. 1.
Fig. 3 is a schematic structural diagram of a sampling housing according to an embodiment of the present invention.
In the figure: 1-a first electromagnetic valve, 2-a first F-shaped pipe, 3-a second electromagnetic valve, 4-a pressure pump, 5-a vacuum pump, 6-a third electromagnetic valve, 7-a second F-shaped pipe, 8-a fourth electromagnetic valve, 9-a first barometer, 10-a second barometer, 11-a water outlet, 12-a first hose, 13-a first connecting air pipe, 14-a second hose, 15-a second connecting air pipe, 16-a sampling shell, 17-a ring pipe, 18-a bronchus, 19-a first air bag, 20-a sampling port, 21-an annular cavity, 22-a sealing screen plate, 23-a cylindrical cavity, 24-a fixed rod and 25-a second air bag.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Example 1
Referring to fig. 1, in the embodiment of the present invention, a pneumatic sealed sampling device for sewage detection includes a sampling housing 16, a closed cylindrical cavity 23 is formed inside the sampling housing 16, a second air bag 25 is installed inside the cylindrical cavity 23, the upper end of the second air bag 25 is connected to a first connecting air pipe 13, an annular cavity 21 with a lower opening is formed outside the cylindrical cavity 23, a sealing mesh plate 22 is installed at the lower end of the annular cavity 21, a plurality of first air bags 19 are circumferentially distributed inside the annular cavity 21, a plurality of sampling ports 20 corresponding to the first air bags 19 are circumferentially distributed on the sampling housing 16 between the annular cavity 21 and the cylindrical cavity 23, the first air bags 19 and the second air bags 25 can seal the sampling ports 20, a branch air pipe 18 is connected to the upper end of the first air bags 19, and the branch air pipes 18 are connected to an annular pipe 17 disposed at the upper portion of the annular cavity 21, the annular pipe 17 is further connected with a second connecting air pipe 15, the second connecting air pipe 15 and the first connecting air pipe 13 are both connected with a positive and negative pressure device, the positive and negative pressure device is used for respectively controlling air pressure of the first air bag 19 and the second air bag 25, and the top of the sampling shell 16 is further provided with a water outlet 11 communicated with the cylindrical cavity 23.
In the embodiment of the present invention, initially, under the action of the positive and negative pressure device, the first air bag 19 and the second air bag 25 are controlled to inflate to seal the sampling ports 20 (i.e. the plurality of first air bags 19 can respectively seal the plurality of sampling ports 20, and the second air bag 25 can simultaneously seal the plurality of sampling ports 20), and then the sampling shell 16 is placed in the sewage at a specified depth; during sampling, the first air bag 19 and the second air bag 25 can be controlled to simultaneously contract under the action of the positive and negative pressure device, the first air bag 19 and the second air bag 25 are both separated from the sampling port 20, at the moment, sewage in the annular cavity 21 can enter the cylindrical cavity 23 through the sampling port 20, and the contraction of the second air bag 25 has a negative pressure suction effect, so that the sewage can more quickly enter the cylindrical cavity 23; after sampling, the second air bag 25 can be controlled to keep a sampling contraction state under the action of the positive and negative pressure device, the first air bag 19 is controlled to expand to seal the sampling port 20, and the sampling shell 16 is taken out, so that sampled sewage can be discharged from the water outlet 11 conveniently and quickly; in addition, through the setting of sealing otter board 22, can block debris, can not cause the influence to the sample detection of sewage, be worth popularizing and applying.
Example 2
Referring to fig. 1-3, the present embodiment is different from embodiment 1 in that:
in this embodiment, the sampling housing 16 is a cylindrical structure, the middle of the bottom of the sampling housing 16 is a downward protruding structure with a middle arc shape, and the material and the aperture of the sealing mesh plate 22 are the same as those of the prior art, and are not particularly limited.
The first air bag 19 is of an arc-shaped protruding structure with the middle part facing the sampling port 20, the first air bag 19 is fixed on the outer side cavity wall of the annular cavity 21 in a sealing mode, the middle part of the first air bag 19 corresponds to the sampling port 20, and the outer side of the sampling port 20 can be reliably sealed through the first air bag 19.
The second connecting air pipe 15 and the first connecting air pipe 13 extend out of the top of the sampling shell 16, the second connecting air pipe 15 and the first connecting air pipe 13 are fixedly connected with the top of the sampling shell 16 in a sealing mode, the first connecting air pipe 13 and the second connecting air pipe 15 are used for being connected with a positive and negative pressure device, and the sampling device is convenient and fast.
In this embodiment, the positive and negative pressure device includes a first solenoid valve 1, a first F-shaped pipe 2, a second solenoid valve 3, a pressure pump 4, a vacuum pump 5, a third solenoid valve 6, a second F-shaped pipe 7, a fourth solenoid valve 8, a first barometer 9, a second barometer 10, a first hose 12 and a second hose 14, the connection port of the pressure pump 4 is respectively connected with the first branch of the first F-shaped pipe 2 and the first branch of the second F-shaped pipe 7 through the second electromagnetic valve 3 and the third electromagnetic valve 6, the second branches of the first F-shaped pipe 2 and the second F-shaped pipe 7 are respectively connected with a connecting port of a vacuum pump 5 through a first electromagnetic valve 1 and a fourth electromagnetic valve 8, the third branches of the first F-shaped pipe 2 and the second F-shaped pipe 7 are also respectively provided with a first barometer 9 and a second barometer 10, and the third branches of the first F-shaped pipe 2 and the second F-shaped pipe 7 are also respectively connected with a first connecting air pipe 13 and a second connecting air pipe 15 through a first hose 12 and a second hose 14; when in use, the lengths of the first hose 12 and the first connecting air pipe 13 can be set according to the sampling depth, and the second connecting air pipe 15 is simultaneously communicated with each first air bag 19 through the annular pipe 17 and the branch air pipe 18, so that the second connecting air pipe 15 acts on each first air bag 19 simultaneously; initially, only the pressure pump 4 is needed to work, the second electromagnetic valve 3 and the third electromagnetic valve 6 are both opened, and the first electromagnetic valve 1 and the fourth electromagnetic valve 8 are both closed; during sampling, only the vacuum pump 5 is needed to work, the second electromagnetic valve 3 and the third electromagnetic valve 6 are closed, and the first electromagnetic valve 1 and the fourth electromagnetic valve 8 are opened; after sampling is finished, the vacuum pump 5 is kept working, the booster pump 4 is controlled to work, the second electromagnetic valve 3 and the fourth electromagnetic valve 8 are both closed, and the third electromagnetic valve 6 and the first electromagnetic valve 1 are both opened; in addition, real-time air pressure monitoring is conveniently carried out through the first air pressure gauge 9 and the second air pressure gauge 10, and the device is stable and reliable.
In this embodiment, it is right that the control of first solenoid valve 1, second solenoid valve 3, force (forcing) pump 4, vacuum pump 5, third solenoid valve 6 and fourth solenoid valve 8 adopts the PLC controller disclosed in the prior art can, and the concrete model and the circuit connection of PLC controller, first solenoid valve 1, second solenoid valve 3, force (forcing) pump 4, vacuum pump 5, third solenoid valve 6 and fourth solenoid valve 8 do not do specifically and restrict, can set up in a flexible way when actual application.
The circuits, electronic components and modules involved are all prior art and may be implemented completely by those skilled in the art, without further elaboration, and the invention is not concerned with the improvement of software programs.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (7)
1. The utility model provides a pneumatic sealed sampling device for sewage detection, includes sample casing (16), its characterized in that:
a closed cylindrical cavity (23) is formed in the inner side of the sampling shell (16), a second air bag (25) is mounted in the cylindrical cavity (23), and the upper end of the second air bag (25) is connected with a first connecting air pipe (13);
an annular cavity (21) with a lower opening is formed in the outer side of the cylindrical cavity (23), a sealing mesh plate (22) is installed at the lower end of the annular cavity (21), and a plurality of first air bags (19) are circumferentially distributed and installed in the annular cavity (21);
a plurality of sampling ports (20) corresponding to the first air bag (19) are circumferentially distributed on the sampling shell (16) between the annular cavity (21) and the cylindrical cavity (23), and the first air bag (19) and the second air bag (25) can seal the sampling ports (20);
the upper end of the first air bag (19) is connected with a bronchus (18), the bronchus (18) is connected with an annular pipe (17) arranged at the upper part of the annular cavity (21), and the annular pipe (17) is also connected with a second connecting air pipe (15);
the second connecting air pipe (15) and the first connecting air pipe (13) are both connected with a positive and negative pressure device, and the positive and negative pressure device is used for respectively controlling the air pressure of the first air bag (19) and the air pressure of the second air bag (25);
the top of the sampling shell (16) is also provided with a water outlet (11) communicated with the cylindrical cavity (23).
2. The pneumatically sealed sampling device for sewage detection according to claim 1, wherein the sampling housing (16) has a cylindrical structure, and the middle of the bottom of the sampling housing (16) has a middle arc-shaped downward protruding structure.
3. The pneumatically sealed sampling device for detecting sewage according to claim 2, wherein the second air bag (25) has an ellipsoidal structure, the middle of the second air bag (25) corresponds to the sampling port (20), a fixing rod (24) is further connected to the lower end of the second air bag (25), and the other end of the fixing rod (24) is fixed to the bottom of the cylindrical cavity (23).
4. The pneumatically sealed sampling device for sewage detection according to claim 3, wherein the first air bag (19) has an arc-shaped protruding structure with a middle portion facing the sampling port (20), the first air bag (19) is sealingly fixed on the outer side wall of the annular cavity (21), and the middle portion of the first air bag (19) corresponds to the sampling port (20).
5. The pneumatically sealed sampling device for detecting sewage according to claim 4, wherein the second connecting air pipe (15) and the first connecting air pipe (13) both extend from the top of the sampling housing (16), and the second connecting air pipe (15) and the first connecting air pipe (13) both are fixedly connected to the top of the sampling housing (16) in a sealing manner.
6. The pneumatically sealed sampling device for detecting sewage according to any of claims 1 to 5, wherein the positive and negative pressure device comprises a first solenoid valve (1), a first F-shaped tube (2), a second solenoid valve (3), a pressurizing pump (4), a vacuum pump (5), a third solenoid valve (6), a second F-shaped tube (7), a fourth solenoid valve (8), a first hose (12) and a second hose (14);
a connecting port of the pressure pump (4) is respectively connected with the first branches of the first F-shaped pipe (2) and the second F-shaped pipe (7) through a second electromagnetic valve (3) and a third electromagnetic valve (6);
the second branches of the first F-shaped pipe (2) and the second F-shaped pipe (7) are respectively connected with a connecting port of a vacuum pump (5) through a first electromagnetic valve (1) and a fourth electromagnetic valve (8);
the third branches of the first F-shaped pipe (2) and the second F-shaped pipe (7) are also connected with a first connecting air pipe (13) and a second connecting air pipe (15) through a first hose (12) and a second hose (14) respectively.
7. The pneumatically sealed sampling device for detecting sewage according to claim 6, wherein the positive and negative pressure device further comprises a first barometer (9) and a second barometer (10);
the first air pressure gauge (9) and the second air pressure gauge (10) are respectively arranged on the third branches of the first F-shaped pipe (2) and the second F-shaped pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010796664.9A CN111947985A (en) | 2020-08-10 | 2020-08-10 | Pneumatic sealed sampling device for sewage detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010796664.9A CN111947985A (en) | 2020-08-10 | 2020-08-10 | Pneumatic sealed sampling device for sewage detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111947985A true CN111947985A (en) | 2020-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010796664.9A Withdrawn CN111947985A (en) | 2020-08-10 | 2020-08-10 | Pneumatic sealed sampling device for sewage detection |
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| Country | Link |
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| CN (1) | CN111947985A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117213903A (en) * | 2023-09-18 | 2023-12-12 | 华北科技学院(中国煤矿安全技术培训中心) | Stratum soil sample detection device |
-
2020
- 2020-08-10 CN CN202010796664.9A patent/CN111947985A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117213903A (en) * | 2023-09-18 | 2023-12-12 | 华北科技学院(中国煤矿安全技术培训中心) | Stratum soil sample detection device |
| CN117213903B (en) * | 2023-09-18 | 2024-03-12 | 华北科技学院(中国煤矿安全技术培训中心) | Stratum soil sample detection device |
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Application publication date: 20201117 |
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| WW01 | Invention patent application withdrawn after publication |