CN109883774B - Ambient air sample collection canning clamp mechanism and use method - Google Patents
Ambient air sample collection canning clamp mechanism and use method Download PDFInfo
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- CN109883774B CN109883774B CN201910236082.2A CN201910236082A CN109883774B CN 109883774 B CN109883774 B CN 109883774B CN 201910236082 A CN201910236082 A CN 201910236082A CN 109883774 B CN109883774 B CN 109883774B
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- sample collection
- sealing plate
- sliding
- collection tank
- outer sleeve
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- 239000012080 ambient air Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000009924 canning Methods 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 95
- 239000003570 air Substances 0.000 claims abstract description 64
- 230000006835 compression Effects 0.000 claims abstract description 30
- 238000007906 compression Methods 0.000 claims abstract description 30
- 238000001179 sorption measurement Methods 0.000 claims abstract description 11
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
Abstract
The invention discloses an ambient air sample collection canning clamping mechanism and a use method thereof, wherein the device comprises a sample collection can, an air inlet mechanism and a clamping mechanism; the sample collection tank is clamped between the upper sealing plate and the lower sealing plate; the air inlet mechanism is arranged at the upper end of the upper sealing plate; the outer side of the air inlet mechanism is sleeved with a clamping mechanism; lifting the connecting rod, counteracting the pressure exerted by the compression spring on the sample collection tank, and taking the sample collection tank out of the clamping mechanism; sample analysis and replacement of a new adsorption substrate are performed; the opening and closing handle is released, and the collected air sample is collected into the sample collection tank through the adsorption material by using the vacuum pump at the lower end of the lower sealing plate. The sample collection tank is connected and sealed with a sealing ring arranged between an upper sealing plate and a lower sealing plate; the compression spring provides a reliable sealing compression force; the device can avoid inconvenience and error caused by screwing the screw thread by an operator, improve the quality and reliability of connection of the sample collection tank, simplify the operation and improve the efficiency.
Description
Technical Field
The invention relates to a mechanism and a using method, in particular to an ambient air sample collection canning clamp mechanism and a using method.
Background
In order to monitor the dioxin pollutants in the ambient air, the ambient air in the area of a garbage incineration power plant and other ambient air containing persistent organic pollutants and floating dust, pollutant samples in the air need to be collected by utilizing the filtration and adsorption principles during sampling. Thus, the sample collection canister is an essential component of this type of sampling instrument. At present, the domestic sample collection tank is generally mechanically attached to an instrument, and a threaded connection method is adopted in a connection mode. Thus, when sample collection is completed and the sample collection canister needs to be replaced, the operator needs to disassemble the compression threads at the seal to remove the sample collection canister. Because the operation space is small, the friction force at the threaded connection part is large, the operation is very inconvenient, and meanwhile, if the newly installed sample collection tank is improperly installed, the defect of poor sealing is easily generated.
Disclosure of Invention
In order to solve the defects of the technology, the invention provides an ambient air sample collection canning clamp mechanism and a use method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme: the ambient air sample collection canning clamping mechanism comprises a sample collection can, an air inlet mechanism and a clamping mechanism; the sample collection tank is clamped between the upper sealing plate and the lower sealing plate; the inner parts of the upper sealing plate and the lower sealing plate are respectively provided with an axial through hole; the inner cavity of the sample collection tank is communicated with the through holes in the upper sealing plate and the lower sealing plate; the air inlet mechanism is arranged at the upper end of the upper sealing plate; the outer side of the air inlet mechanism is sleeved with a clamping mechanism;
the clamping mechanism comprises a sliding outer sleeve and a sliding inner sleeve positioned in the sliding outer sleeve, and the sliding inner sleeve moves up and down along the sliding outer sleeve; the sliding inner sleeve is sleeved at the upper end of the upper sealing plate and fixedly connected with the upper sealing plate; the outer side of the sliding inner sleeve is provided with a transverse sliding guide post; the sliding jacket is provided with a vertical jacket guide groove; the sliding guide post is inserted into the outer sleeve guide groove;
an opening and closing handle is arranged on the outer side of the sliding jacket; the opening and closing handle comprises a fixed rod, a handle arm and a connecting rod; the fixed rod is fixedly arranged on one side of the sliding jacket, and the two ends of the fixed rod are hinged with handle arms; the handle arm extends to the other side of the sliding coat, and a connecting rod is arranged at the end part of the handle arm; the handle arm is provided with a transverse arm guide groove; a sliding guide post penetrating out of the outer sleeve guide groove is inserted into the arm guide groove; the end part of the sliding guide post is provided with a screw cap;
the air inlet mechanism comprises an air inlet funnel and an air path connecting pipe; the air inlet funnel is fixedly arranged at the upper end of the sliding sleeve, and the middle part of the air inlet funnel is provided with a downward extending air passage connecting pipe; the lower end of the air passage connecting pipe is fixedly connected with the upper sealing plate; the inside of the air passage connecting pipe is provided with a liner tube, and the outside of the air passage connecting pipe is sleeved with a compression spring; the upper end of the compression spring is fixedly connected with the sliding outer sleeve, and the lower end of the compression spring is fixedly connected with the sliding inner sleeve; the air passage connecting pipe is a telescopic pipe.
Further, rubber sealing rings are arranged between the sample collection tank and the upper sealing plate as well as between the sample collection tank and the lower sealing plate.
Further, the sliding guide posts and the outer sleeve guide grooves are multiple, and the sliding guide posts and the outer sleeve guide grooves are in one-to-one correspondence.
Further, the sample collection tank comprises a tank body and a tank cover hinged on the tank body; the tank cover and the tank body are fastened by a buckle.
The application method of the ambient air sample collection canning clamp mechanism comprises the following steps:
a. lifting the connecting rod upwards, and enabling the lifting handle arm to do circular motion around the fixed rod as the other end of the lifting handle arm is fixed on the fixed rod; simultaneously, an arm guide groove on the handle arm moves upwards to drive the sliding guide post to move upwards along the outer sleeve guide groove; because the sliding guide post is fixedly connected with the sliding inner sleeve, the sliding inner sleeve moves upwards along the sliding outer sleeve; during the movement, the sliding inner sleeve continuously compresses the compression spring upwards to offset the pressure applied by the compression spring to the sample collection tank, so that the sample collection tank is conveniently taken out of the clamping mechanism;
b. after the sample collection tank is taken out, the opening and closing handle is lifted to place the replaced new sample collection tank between the upper sealing plate and the lower sealing plate again;
c. releasing the opening and closing handle to enable the compression spring to simultaneously compress the upper sealing plate, the lower sealing plate and the sample collection tank; because the inside of the lower sealing plate is provided with a through hole, a vacuum pump is used for pumping the collected air sample out of the sample collection tank at the lower end of the lower sealing plate; collecting harmful substances in an air sample to be adsorbed in an adsorption substrate in a sample collection tank;
d. and c, closing the vacuum pump, repeating the step a and the step b, taking out the sample collection tank after collection, and repositioning a new sample collection tank between the upper sealing plate and the lower sealing plate for next ambient air sample collection.
The sample collection tank is connected and sealed with a sealing ring arranged between an upper sealing plate and a lower sealing plate; the compression spring provides a reliable sealing compression force; under the help of the lever force of the opening and closing handle, an operator can conveniently lift the upper sealing plate of the collection tank to take out the collection tank after collection or put the sample collection tank to be collected into the collection tank, so that inconvenience and errors caused by the fact that the operator is used for screwing up the screw thread are avoided, the quality and reliability of connection of the sample collection tank in the gas circuit of the sampling instrument are improved, the operation is simplified, and the efficiency is improved.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the overall structure of the air intake mechanism and the clamping mechanism.
In the figure: 1. an air inlet funnel; 2. a compression spring; 3. an air path connecting pipe; 4. a sliding inner sleeve; 5. an upper sealing plate; 6. a sample collection canister; 7. a lower sealing plate; 8. a handle arm; 9. a connecting rod; 10. a sliding jacket; 11. arm guide slots; 12. a jacket guide groove; 13. and sliding the guide post.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
An ambient air sample collection canning and clamping mechanism shown in fig. 1-2 comprises a sample collection can 6, an air inlet mechanism and a clamping mechanism.
The sample collection tank 6 is clamped between the upper sealing plate 5 and the lower sealing plate 7, and rubber sealing rings are arranged between the sample collection tank and the upper sealing plate and between the sample collection tank and the lower sealing plate. The upper sealing plate and the lower sealing plate can play a role in supporting the sample collection tank on one hand and can seal the sample collection tank on the other hand; the inner parts of the upper sealing plate and the lower sealing plate are respectively provided with an axial through hole; the inner cavity of the sample collection tank is communicated with the through holes in the upper sealing plate and the lower sealing plate; the air inlet mechanism is arranged at the upper end of the upper sealing plate 5;
the clamping mechanism is sleeved on the outer side of the air inlet mechanism and is used for providing pressure sealing for the upper sealing plate and the lower sealing plate, and the replacement process of the sample collection tank can be simplified; the clamping mechanism comprises a sliding outer sleeve 10 and a sliding inner sleeve 4 positioned in the sliding outer sleeve, and the sliding inner sleeve moves up and down along the sliding outer sleeve; the sliding inner sleeve is sleeved at the upper end of the upper sealing plate and fixedly connected with the upper sealing plate, and the sliding inner sleeve can drive the upper sealing plate to move; the outer side of the sliding inner sleeve is provided with a transverse sliding guide post 13; the sliding jacket is provided with a vertical jacket guide groove 12; the sliding guide post 13 is inserted into the outer sleeve guide groove 12; the sliding guide posts 13 and the outer sleeve guide grooves 12 are multiple, and the sliding guide posts correspond to the outer sleeve guide grooves one by one; in the embodiment, the number of the sliding guide posts and the number of the outer sleeve guide grooves are 4, and the sliding guide posts and the outer sleeve guide grooves are uniformly distributed; the outer sleeve guide groove can provide a moving track for the sliding guide post, and the arrangement of the outer sleeve guide groove and the sliding guide post limits the relative circular movement of the sliding inner sleeve and the sliding outer sleeve so as to prevent the gas path connecting pipe from being distorted.
The outer side of the sliding jacket is provided with an opening and closing handle which can be controlled by manpower or automatically by replacing a motor and a crank rocker mechanism; the opening and closing handle comprises a fixed rod, a handle arm 8 and a connecting rod 9; the fixed rod is fixedly arranged on one side of the sliding coat, and the two ends of the fixed rod are hinged with handle arms 8; the handle arm extends to the other side of the sliding coat and a connecting rod 9 is arranged at the end part of the handle arm; the handle arm is provided with a transverse arm guide groove 11; a sliding guide post penetrating out of the outer sleeve guide groove is inserted into the arm guide groove; the end part of the sliding guide post is provided with a screw cap, and the screw cap can fix the sliding guide post to prevent the sliding guide post from sliding out of the arm guide groove or the outer sleeve guide groove;
the air inlet mechanism comprises an air inlet funnel 1 and an air path connecting pipe 3; the air inlet funnel 1 is fixedly arranged at the upper end of the sliding sleeve, the middle part of the air inlet funnel is provided with a downward extending air path connecting pipe 3, and the air inlet funnel is an inlet for air to enter and is used for collecting collected ambient air and conveying the ambient air to the air path connecting pipe; the lower end of the air passage connecting pipe is fixedly connected with the upper sealing plate; the liner tube is arranged in the air passage connecting pipe, the compression spring 2 is sleeved outside the air passage connecting pipe, the liner tube can prop up the shape of the air passage connecting pipe, and the air passage connecting pipe is prevented from being shrunken in the vacuumizing process to influence use; the upper end of the compression spring 2 is fixedly connected with the sliding outer sleeve, the lower end of the compression spring is fixedly connected with the sliding inner sleeve, the compression spring is in a compressed state in the sliding outer sleeve, the compression spring in the compressed state can form downward acting force, the acting force can downwards compress the upper sealing plate, and the acting force can be downwards transmitted to enable the sample collection tank and the lower sealing plate to be compressed to form good sealing; the effect of the compression spring can strengthen the tightness in the whole device, and the device can be integrated, so that the sample collection tank is more stable and is not easy to loosen; the air passage connecting pipe is a telescopic pipe, the telescopic pipe has the characteristic of being capable of stretching up and down, and even if the upper sealing plate is lifted up or pressed down, the air passage connecting pipe can be well connected with the air inlet funnel and the upper sealing plate, so that the sealing effect of the whole air inlet mechanism is ensured.
The sample collection tank comprises a tank body and a tank cover hinged on the tank body; the tank cover and the tank body are fastened by the buckle, the buckle can compress the tank cover and the tank body to ensure sealing, the tank cover can also be opened and replaced by an adsorption substrate, and the adsorption substrate used in the invention is a conventional adsorption substrate used for adsorbing air impurities in the field, such as foam, and can be purchased in the market.
The using method of the ambient air sample collection canning clamp mechanism comprises the following steps:
a. lifting the connecting rod upwards, and enabling the lifting handle arm to do circular motion around the fixed rod as the other end of the lifting handle arm is fixed on the fixed rod; simultaneously, an arm guide groove on the handle arm moves upwards to drive the sliding guide post to move upwards along the outer sleeve guide groove; because the sliding guide post is fixedly connected with the sliding inner sleeve, the sliding inner sleeve moves upwards along the sliding outer sleeve; during the movement, the sliding inner sleeve continuously compresses the compression spring upwards to offset the pressure applied by the compression spring to the sample collection tank, so that the sample collection tank is conveniently taken out of the clamping mechanism;
b. after the sample collection tank is taken out, the opening and closing handle is lifted to place the replaced new sample collection tank between the upper sealing plate and the lower sealing plate again;
c. releasing the opening and closing handle to enable the compression spring to simultaneously compress the upper sealing plate, the lower sealing plate and the sample collection tank; because the inside of the lower sealing plate is provided with a through hole, a vacuum pump is used for pumping out the air in the sample collection tank at the lower end of the lower sealing plate; because the sample collection tank is internally provided with the adsorption material, harmful substances in the external atmosphere are sucked into the sample collection tank through the air inlet funnel and the air path connecting pipe and adsorbed, and the harmful substances in the ambient air adsorbed in the base material are used for analyzing and detecting the air harmful substances;
d. and (3) turning off the vacuum pump, repeating the step a and the step b, taking out the adsorption substrate, and replacing the adsorption substrate with a new one for next ambient air sample collection.
Compared with the prior art, the invention has the advantages that:
a. the sample collection tank is connected and sealed with a sealing ring arranged between the upper sealing plate and the lower sealing plate; the compression spring provides a reliable sealing compression force;
b. under the help of the lever force of the opening and closing handle, an operator can conveniently lift the upper sealing plate of the collection tank to take out the collection tank after collection or put the sample collection tank to be collected into the collection tank, so that inconvenience and errors caused by the fact that the operator is used for screwing up the screw thread are avoided, the quality and reliability of connection of the sample collection tank in the gas circuit of the sampling instrument are improved, the operation is simplified, and the efficiency is improved.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, but is also intended to be limited to the following claims.
Claims (4)
1. The utility model provides an ambient air sample collection canning presss from both sides mechanism, includes sample collection jar (6), its characterized in that: the device also comprises an air inlet mechanism and a clamping mechanism; the sample collection tank (6) is clamped between the upper sealing plate (5) and the lower sealing plate (7); the inner parts of the upper sealing plate and the lower sealing plate are respectively provided with an axial through hole; the internal cavity of the sample collection tank is communicated with through holes in the upper sealing plate and the lower sealing plate; the air inlet mechanism is arranged at the upper end of the upper sealing plate (5); the outer side of the air inlet mechanism is sleeved with a clamping mechanism;
the clamping mechanism comprises a sliding outer sleeve (10) and a sliding inner sleeve (4) positioned in the sliding outer sleeve, and the sliding inner sleeve moves up and down along the sliding outer sleeve; the sliding inner sleeve is sleeved at the upper end of the upper sealing plate and fixedly connected with the upper sealing plate; a transverse sliding guide post (13) is arranged on the outer side of the sliding inner sleeve; the sliding jacket is provided with a vertical jacket guide groove (12); the sliding guide post (13) is inserted into the outer sleeve guide groove (12);
an opening and closing handle is arranged on the outer side of the sliding outer sleeve; the opening and closing handle comprises a fixed rod, a handle arm (8) and a connecting rod (9); the fixed rod is fixedly arranged on one side of the sliding jacket, and both ends of the fixed rod are hinged with handle arms (8); the handle arm extends to the other side of the sliding coat, and a connecting rod (9) is arranged at the end part of the handle arm; the handle arm is provided with a transverse arm guide groove (11); a sliding guide post penetrating out of the outer sleeve guide groove is inserted into the arm guide groove; a nut is arranged at the end part of the sliding guide post;
the air inlet mechanism comprises an air inlet funnel (1) and an air path connecting pipe (3); the air inlet funnel (1) is fixedly arranged at the upper end of the sliding sleeve, and the middle part of the air inlet funnel is provided with a downward extending air passage connecting pipe (3); the lower end of the air path connecting pipe is fixedly connected with the upper sealing plate; a liner tube is arranged in the air passage connecting pipe, and a compression spring (2) is sleeved outside the air passage connecting pipe; the upper end of the compression spring (2) is fixedly connected with the sliding outer sleeve, and the lower end of the compression spring is fixedly connected with the sliding inner sleeve; the air passage connecting pipe is a telescopic pipe;
and rubber sealing rings are arranged between the sample collection tank and the upper sealing plate and between the sample collection tank and the lower sealing plate.
2. The ambient air sample collection canning clamp mechanism of claim 1, wherein: the sliding guide posts (13) and the outer sleeve guide grooves (12) are multiple, and the sliding guide posts and the outer sleeve guide grooves are in one-to-one correspondence.
3. The ambient air sample collection canister clip mechanism of claim 1 or 2, wherein: the sample collection tank comprises a tank body and a tank cover hinged on the tank body; the tank cover and the tank body are fastened by a buckle.
4. A method of using the ambient air sample collection canister clamp mechanism of claim 1, further comprising: the method comprises the following steps:
a. lifting the connecting rod upwards, and enabling the lifting handle arm to do circular motion around the fixed rod as the other end of the lifting handle arm is fixed on the fixed rod; simultaneously, an arm guide groove on the handle arm moves upwards to drive the sliding guide post to move upwards along the outer sleeve guide groove; because the sliding guide post is fixedly connected with the sliding inner sleeve, the sliding inner sleeve moves upwards along the sliding outer sleeve; during the movement, the sliding inner sleeve continuously compresses the compression spring upwards to offset the pressure applied by the compression spring to the sample collection tank, so that the sample collection tank is conveniently taken out of the clamping mechanism;
b. after the sample collection tank is taken out, the opening and closing handle is lifted to place the replaced new sample collection tank between the upper sealing plate and the lower sealing plate again;
c. releasing the opening and closing handle to enable the compression spring to simultaneously compress the upper sealing plate, the lower sealing plate and the sample collection tank; because the inside of the lower sealing plate is provided with a through hole, a vacuum pump is used for pumping the collected air sample out of the sample collection tank at the lower end of the lower sealing plate; collecting harmful substances in an air sample to be adsorbed in an adsorption substrate in a sample collection tank;
d. and c, closing the vacuum pump, repeating the step a and the step b, taking out the sample collection tank after collection, and repositioning a new sample collection tank between the upper sealing plate and the lower sealing plate for next ambient air sample collection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236082.2A CN109883774B (en) | 2019-03-27 | 2019-03-27 | Ambient air sample collection canning clamp mechanism and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236082.2A CN109883774B (en) | 2019-03-27 | 2019-03-27 | Ambient air sample collection canning clamp mechanism and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109883774A CN109883774A (en) | 2019-06-14 |
| CN109883774B true CN109883774B (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910236082.2A Active CN109883774B (en) | 2019-03-27 | 2019-03-27 | Ambient air sample collection canning clamp mechanism and use method |
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| CN (1) | CN109883774B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114670169A (en) * | 2022-03-29 | 2022-06-28 | 中煤第三建设(集团)有限责任公司二十九工程处 | Full cross-section contour line marking device in tunnel |
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