CN214621924U

CN214621924U - Testing device for volatile organic compounds in environment testing cabin

Info

Publication number: CN214621924U
Application number: CN202120812617.9U
Authority: CN
Inventors: 朱海欧; 侯建军; 王慧; 卢志刚; 张桂珍
Original assignee: Nanjing Customs Industrial Product Testing Center
Current assignee: Nanjing Customs Industrial Product Testing Center
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-11-05
Anticipated expiration: 2031-04-20

Abstract

The utility model relates to an environmental test cabin gas test technical field specifically is a testing arrangement for environmental test cabin volatility organic compound, including the test cabin, the upper end of test cabin is provided with end-sealing cover, and the upper end of test cabin is provided with sampling device, and end-sealing cover seals and pegs graft at the upper end opening of test cabin, and end-sealing cover's lower extreme rotates installs stirring gas's silk ribbon, and beneficial effect is: the utility model is provided with the motor-driven silk ribbon in the sealed environment test cabin, so that the volatilized gas can be diffused rapidly in time and can be fully mixed with the air in the sealed environment, thereby achieving the purposes of reducing errors and improving the detection accuracy; through setting up the air exhaust type sampling pipe that the lift post drove, utilize the cooperation in piston and hemisphere groove, avoid the mixture of external gas and sealed inner chamber air current, bleed simultaneously through going up and down and make the ball sealer rise, in the sampling end, realize sealed, avoid volatilizing the influence of time to detecting the precision.

Description

Testing device for volatile organic compounds in environment testing cabin

Technical Field

The utility model relates to an environmental test cabin gas test technical field specifically is a testing arrangement for environmental test cabin volatility organic compound.

Background

In order to detect the diffusion concentration of the volatile gas in the atmosphere, the volatile gas is volatilized in a test chamber of a simulated environment, and then the concentration of the volatile gas in the air is sampled and detected, so that the purpose of detecting the diffusion speed is achieved.

However, in the experiment detection sampling process, the traditional sampling mode mostly adopts the mode that trachea and air pump bleed, remaining air mixes with sample gas in the trachea in such a mode, very big influence the precision of concentration detection, the volume of the sample is difficult to control to the air pump bleed simultaneously to further cause the reduction of concentration detection precision, and volatile gas diffuses in the air slower, during the sampling, gather the gas that does not in time diffuse easily, thereby cause the error increase of detection.

Therefore, the testing device for the volatile organic compounds of the environmental testing cabin is provided to solve the problems of detection accuracy and errors.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a testing arrangement for environmental test cabin volatile organic compounds to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a testing arrangement for environmental test cabin volatility organic compound, includes the test chamber, the upper end of test chamber is provided with end cover, and the upper end of test chamber is provided with sampling device, the sealed upper end opening of pegging graft at the test chamber of end cover, end cover's lower extreme rotates installs stirring gas's silk ribbon, and end cover's inner chamber is provided with the exhaust runner of a pair of vertical extension of bilateral symmetry, exhaust runner's upper end inner chamber is fixed to be pegged graft and is had the sampling tube, slidable mounting has the piston of liftable bleeding in the sampling tube, is provided with the sampling interface on the interlude outer wall of sampling tube, the lower extreme of piston is provided with the sealed ball that cuts off sampling tube and exhaust runner intercommunication.

Preferably, the inner cavity of the lower end of the sealing end cover is provided with a motor, and the upper end of the ribbon is fixedly installed at the end part of a rotating shaft of the motor.

Preferably, the upper end of the test cabin is vertically provided with a lifting column, and the lifting column is fixedly connected with a piston through a connecting rod and a cross beam.

Preferably, the connecting rod is connected to the upper end of the piston, the cross beam is fixedly connected to the end portions of the pair of connecting rods which are bilaterally symmetrical, and the middle fixing screw of the cross beam is mounted at the end portion of the upper end of the lifting column.

Preferably, the upper end of the sampling tube is provided with a thread, and a limit ring is rotatably arranged on the upper end of the sampling tube, and the inner diameter of the limit ring is smaller than the outer diameter of the piston.

Preferably, the lower end of the sampling pipe is provided with a hemispherical groove, the hemispherical groove is communicated with the sampling pipe and the exhaust runner, and the piston is pressed at the upper end of the hemispherical groove.

Preferably, the lower end of the piston is vertically adhered with a pull rope, the lower end of the pull rope extends to the lower end of the sealing end cover, the end part of the lower end of the pull rope is fixedly connected with a sealing ball, and the upper end of the sealing ball is right opposite to the hemispherical groove.

Preferably, the length of the pull rope is smaller than the height of the piston from the limit ring, and the outer diameter of the sealing ball is equal to the inner diameter of the semispherical groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model is provided with the motor-driven silk ribbon in the sealed environment test cabin, so that the volatilized gas can be diffused rapidly in time and can be fully mixed with the air in the sealed environment, thereby achieving the purposes of reducing errors and improving the detection accuracy;

2. the utility model discloses a setting up the air exhaust formula sampling pipe that the lift post drove, utilizing the cooperation of piston and hemisphere groove, avoiding the mixture of external gas and seal chamber air current, bleeding simultaneously through going up and down and making the ball sealer rise, when the sampling finishes, the realization is sealed, avoids the influence of volatilization time to detecting the precision.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the sampling sealing structure of the present invention;

fig. 3 is the structural schematic diagram of the end cover sampling device of the present invention.

In the figure: 1. a test chamber; 2. sealing the end cap; 3. a lifting column; 4. a motor; 5. a ribbon; 6. an exhaust flow passage; 7. a sampling tube; 8. a cross beam; 9. a connecting rod; 10. a limiting ring; 11. pulling a rope; 12. a sealing ball; 13. a sampling interface; 14. a piston; 15. a hemispherical groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution:

the utility model provides a testing arrangement for environmental test cabin volatile organic compound, including test cabin 1, the upper end of test cabin 1 is provided with end cover 2, the upper end of test cabin 1 is provided with sampling device, the sealed upper end opening of pegging graft at test cabin 1 of end cover 2, end cover 2's lower extreme rotates installs stirring gas's silk ribbon 5, end cover 2's lower extreme inner chamber is provided with motor 4, the upper end fixed mounting of silk ribbon 5 is at motor 4's pivot tip, utilize motor 4 to drive silk ribbon 5 and rotate at test cabin 1's upper end inner chamber, thereby make the timely quick diffusion of volatile gaseous, fully mix with the air in the sealed environment, thereby reach the reduction error, improve the purpose that detects the accuracy.

The inner chamber of end cover 2 is provided with the exhaust runner 6 of a pair of vertical extension of bilateral symmetry, exhaust runner 6's upper end inner chamber is fixed to be pegged graft and is had sampling tube 7, slidable mounting has the piston 14 that the liftable was bled in sampling tube 7, the vertical lift post 3 that is provided with in upper end of test chamber 1, lift post 3 passes through connecting rod 9 and crossbeam 8 fixed connection piston 14, connecting rod 9 is connected in the upper end of piston 14, a pair of connecting rod 9 tip of crossbeam 8 fixed connection bilateral symmetry, and the middle set screw of crossbeam 8 installs the upper end tip at lift post 3, cooperation through connecting rod 9 and crossbeam 8, realize that lift post 3 drives the purpose that piston 14 rose, and then reach the purpose of bleeding the sample.

The lower extreme of sampling pipe 7 is provided with hemisphere groove 15, hemisphere groove 15 intercommunication sampling pipe 7 and exhaust flow 6, and the 14 pressfittings of piston make sampling inner chamber and test chamber 1 inner chamber intercommunication through setting up hemisphere groove 15 in the upper end of hemisphere groove 15, avoid the air in the sampling pipe 7 to cause the influence to the measuring accuracy, prevent the mixture of external gas and sealed inner chamber air current.

The lower extreme of piston 14 is provided with the sealed ball 12 that cuts off

sampling tube

7 and 6 intercommunications of exhaust runner, the vertical adhesion of lower extreme of piston 14 has stay cord 11, the lower extreme of stay cord 11 extends to end cover 2's lower extreme, and the lower extreme tip fixed connection sealed ball 12 of stay cord 11, the upper end of sealed ball 12 is just to hemisphere groove 15, the length of stay cord 11 is less than the height of piston 14 apart from spacing ring 10, the external diameter of sealed ball 12 equals the internal diameter of hemisphere groove 15, the in-process of the air exhaust that rises at piston 14, it rises to drive stay cord 11, make sealed 12 pressfitting of sealed ball seal in hemisphere groove 15, the realization cuts off the intercommunication of sampling tube 7 and exhaust runner 6.

Be provided with sampling interface 13 on the interlude outer wall of sampling pipe 7, the upper end tip of sampling pipe 7 is provided with the screw thread and rotates and install spacing ring 10, and the internal diameter of spacing ring 10 is less than piston 14's external diameter, utilizes sampling interface 13 to realize the purpose of ration sample, through setting up spacing ring 10, prescribes a limit to the position that piston 14 rose, prevents that atmospheric pressure change from causing piston 14 to drop.

The working principle is as follows: at first, the motor 4 is utilized to drive the ribbon 5 to rotate in the inner cavity of the upper end of the test chamber 1, so that the volatilized gas can be diffused rapidly in time and is fully mixed with air in a sealed environment, and the purposes of reducing errors and improving the detection accuracy are achieved.

Through connecting rod 9 and crossbeam 8's cooperation, realize the purpose that lift post 3 drives piston 14 and rise, and then reach the purpose of bleeding the sampling, make sampling inner chamber and 1 inner chamber intercommunication in test compartment through setting up hemisphere groove 15, avoid the air in the sampling pipe 7 to cause the influence to the measuring accuracy, prevent the mixture of external gas and sealed inner chamber air current, the in-process of bleeding rises at piston 14, it rises to drive stay cord 11, make sealed ball 12 pressfitting seal in hemisphere groove 15, realize cutting off the intercommunication of sampling pipe 7 and exhaust runner 6, utilize sampling interface 13 to realize the purpose of ration sample, through setting up spacing ring 10, inject the position that piston 14 rose, prevent that atmospheric pressure change from causing piston 14 to drop.

Wherein motor 4 adopts common three-phase asynchronous machine, and lifting column 3 adopts the model to be: YH series of long-range electric telescopic rods.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a testing arrangement for environmental test cabin volatile organic compounds, includes test cabin (1), the upper end of test cabin (1) is provided with end cover (2), and the upper end of test cabin (1) is provided with sampling device, its characterized in that: sealed grafting of end cover (2) is at the upper end opening of test chamber (1), and the lower extreme of end cover (2) rotates ribbon (5) of installing stirring gas, and the inner chamber of end cover (2) is provided with a pair of vertical extension's of bilateral symmetry exhaust runner (6), the upper end inner chamber of exhaust runner (6) is fixed to be pegged graft and is had sampling tube (7), slidable mounting has piston (14) that the liftable was bled in sampling tube (7), is provided with sampling interface (13) on the interlude outer wall of sampling tube (7), the lower extreme of piston (14) is provided with sealed ball (12) that cut off sampling tube (7) and exhaust runner (6) intercommunication.

2. The testing device for the volatile organic compounds of the environmental test chamber according to claim 1, wherein: the lower end inner cavity of the sealing end cover (2) is provided with a motor (4), and the upper end of the ribbon (5) is fixedly installed at the end part of a rotating shaft of the motor (4).

3. The testing device for the volatile organic compounds of the environmental test chamber according to claim 1, wherein: the upper end of the test chamber (1) is vertically provided with a lifting column (3), and the lifting column (3) is fixedly connected with a piston (14) through a connecting rod (9) and a cross beam (8).

4. The testing device for the volatile organic compounds of the environmental test chamber according to claim 3, wherein: the connecting rods (9) are connected to the upper ends of the pistons (14), the cross beam (8) is fixedly connected with the end portions of the pair of connecting rods (9) which are bilaterally symmetrical, and the middle fixing screw of the cross beam (8) is installed at the end portion of the upper end of the lifting column (3).

5. The testing device for the volatile organic compounds of the environmental test chamber according to claim 1, wherein: the upper end of the sampling pipe (7) is provided with a thread, a limiting ring (10) is rotatably arranged on the upper end of the sampling pipe, and the inner diameter of the limiting ring (10) is smaller than the outer diameter of the piston (14).

6. The testing device for the volatile organic compounds of the environmental test chamber according to claim 1, wherein: the lower extreme of sampling pipe (7) is provided with hemisphere groove (15), hemisphere groove (15) intercommunication sampling pipe (7) and exhaust flow way (6), piston (14) pressfitting is in the upper end of hemisphere groove (15).

7. The testing device for the volatile organic compounds of the environmental test chamber according to claim 1, wherein: the lower end of the piston (14) is vertically adhered with a pull rope (11), the lower end of the pull rope (11) extends to the lower end of the sealing end cover (2), the end part of the lower end of the pull rope (11) is fixedly connected with a sealing ball (12), and the upper end of the sealing ball (12) is opposite to the hemispherical groove (15).

8. The testing device for the volatile organic compounds of the environmental test chamber according to claim 7, wherein: the length of the pull rope (11) is smaller than the height between the piston (14) and the limiting ring (10), and the outer diameter of the sealing ball (12) is equal to the inner diameter of the semispherical groove (15).