Portable gas sampler
By designing the plug-in connection between the sealing plate and the collection bottle, and the one-way valve structure, the monitoring error problem caused by gas mixing in the collection bottle in the gas sampler was solved, realizing accurate collection and sealed storage of gas samples, and improving the reliability of monitoring results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-04-07
AI Technical Summary
Existing portable gas samplers suffer from errors in monitoring results due to the mixing of air inside the collection bottle with the collected gas during gas sample collection, and lack an effective bottle cleaning function.
A portable gas sampler was designed, which uses a sealing plate and a collection bottle to connect and cooperate. Through the cooperation of a one-way valve and a sealing component, the gas in the collection bottle is first discharged, and then the collected gas sample is transported into the collection bottle. The sealing structure of rubber membrane and circular plate ensures that the gas does not escape.
This ensures the accuracy of monitoring results, avoids mixing of gas samples with the gas in the collection bottle, and improves the practicality of the sampler.
Smart Images
Figure CN224095470U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to gas sampling technical field, concretely relates to a portable gas sampler. BACKGROUND
[0002] Environmental monitoring refers to the periodical or non-periodical monitoring of some factors in the environment to understand the environmental condition and evaluate the environmental quality, which includes gas monitoring. The gas monitoring is usually to check the gas in the outdoor environment. In order to facilitate the outdoor carrying and use, the portable gas sampler is usually used to collect the gas sample, and then the gas sample is brought back to the laboratory for analysis experiment.
[0003] When collecting the sample outdoors, the collected gas sample is usually collected by the collecting bottle (test tube bottle or other collecting container). The existing sampler can effectively collect the sample, but lacks the function of cleaning the collecting bottle. The collecting bottle itself carries the air, so that the collected gas sample is mixed with the air carried by the collecting bottle itself, resulting in the error of the subsequent monitoring result. Therefore, the utility model provides a portable gas sampler. UTILITY MODEL CONTENT
[0004] The utility model discloses a portable gas sampler.
[0005] The utility model discloses a portable gas sampler to realize the following technical scheme in the specific:
[0006] A portable gas sampler comprises:
[0007] A collecting cylinder is provided with a sealing plate at one end, a piston rod is movably inserted into the collecting cylinder, a first through hole and a second through hole are formed through the sealing plate, the first through hole is communicated with the collecting cylinder, a collecting pipe is communicated with one end of the collecting cylinder close to the sealing plate, a one-way valve is arranged in the first through hole and the collecting pipe, and a sealing piece for sealing the second through hole is arranged on the collecting cylinder.
[0008] A collecting bottle is provided with an opening at one end, and the sealing plate is inserted and matched with the collecting bottle.
[0009] Further, the sealing piece comprises a bracket arranged on the collecting cylinder, a lead screw is screwed through the bracket, and a rubber head is connected to the end of the lead screw and inserted and matched with the second through hole.
[0010] Further, a sliding groove is formed in the bracket, a sliding block is slidably inserted into the sliding groove, and the collecting bottle is detachably connected with the sliding block.
[0011] Further, a rubber block is arranged on the sliding block, a clamping groove is formed in the rubber block, and the collecting bottle is clamped and matched with the clamping groove.
[0012] Further, a sealing ring is sleeved on the sealing plate.
[0013] Further, an arc-shaped slot is formed through one side of the collecting bottle, a rubber film is arranged in the arc-shaped slot, an arc-shaped plate corresponding to the arc-shaped slot is hinged to the collecting bottle, and an inner wall of the arc-shaped plate is provided with a round plate.
[0014] Further, a U-shaped block is fixedly arranged on the collecting bottle and the arc-shaped plate, one of the U-shaped blocks is hinged with a screw rod, and a nut is threadedly sleeved with a free end of the screw rod.
[0015] Further, the collecting tube is a hose, and a pipe cap is sleeved with a free end of the collecting tube.
[0016] The utility model discloses the beneficial effects are as follows:
[0017] In the utility model, when collecting gas, first, the piston rod is completely inserted into the collecting cylinder, then the collecting cylinder is inserted into the collecting bottle, with the insertion of the collecting cylinder, the gas carried by the collecting bottle itself is discharged through the second through hole, after the gas carried by the collecting bottle itself is discharged, the second through hole is blocked by the blocking piece, then the piston rod is reciprocatingly slid, under the cooperation of the two one-way valves, the collected gas sample is transported into the collecting bottle, the gas in the collecting bottle is emptied first, then the collected gas sample is filled, thereby ensuring the subsequent monitoring result.
[0018] In the utility model, the arc-shaped slot is formed on the collecting bottle, the rubber film is arranged in the arc-shaped slot, the arc-shaped plate is hinged, and the round plate is arranged on the arc-shaped plate, so that the arc-shaped plate, the round plate and the rubber film can be used as a blocking cap, without the need of additionally blocking by the bottle cap, so that the gas in the collecting bottle cannot be lost and mixed with the external gas, thereby improving the practicability. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is the utility model three-dimensional structure diagram;
[0020] Figure 2 is the utility model three-dimensional structure cross-sectional view;
[0021] Figure 3 is the utility model three-dimensional structure explosion diagram;
[0022] Figure 4 is the utility model part three-dimensional structure diagram;
[0023] Figure 5 is the utility model Figure 2 A enlarged view in the utility model.
[0024] Sign: 1, collection cylinder; 2, sealing plate; 3, piston rod; 4, first through hole; 5, second through hole; 6, collection tube; 7, one-way valve; 8, plugging piece; 9, collection bottle; 10, sliding groove; 11, sliding block; 12, rubber block; 13, clamping groove; 14, sealing ring; 15, arc-shaped groove; 16, rubber film; 17, arc-shaped plate; 18, round plate; 19, U-shaped block; 20, screw rod; 21, nut; 22, pipe cap; 801, bracket; 802, screw rod; 803, rubber head. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model.
[0026] As Figures 1-5 shown, an embodiment of the utility model proposes a kind of portable gas sampler, comprising:
[0027] The collecting cylinder 1 is provided with a sealing plate 2 at one end, preferably, the sealing plate 2 is coaxially fixed with the collecting cylinder 1 and the diameter of the sealing plate 2 is larger than that of the collecting cylinder 1, the collecting cylinder 1 movably inserts a piston rod 3, the sealing plate 2 is provided with a first through hole 4 and a second through hole 5, the first through hole 4 is communicated with the collecting cylinder 1, the one end of the collecting cylinder 1 close to the sealing plate 2 is communicated with a collecting pipe 6, the first through hole 4 and the collecting pipe 6 are both provided with a one-way valve 7, preferably, the one-way valve 7 in the first through hole 4 is used to make the gas in the collecting cylinder 1 flow outward through the first through hole 4 and cannot flow back, the one-way valve 7 in the collecting pipe 6 is used to make the external air flow through the collecting pipe 6 to the collecting cylinder 1 and the air in the collecting cylinder 1 cannot flow back through the collecting pipe 6, through the cooperation of the two one-way valves 7, when the piston rod 3 reciprocally slides, the external air can be transported to the collecting cylinder 1 through the collecting pipe 6 and then discharged through the first through hole 4, the collecting cylinder 1 is provided with a blocking piece 8 for blocking the second through hole 5; the collecting bottle 9 is open at one end, the sealing plate 2 is inserted and matched with the collecting bottle 9, when collecting air, the piston rod 3 is first slid to be completely shrunk in the collecting cylinder 1, then the second through hole 5 is kept in a communicated state, then the collecting bottle 9 is movably sleeved on the sealing plate 2, preferably, the outer wall of the sealing plate 2 abuts and overlaps with the inner wall of the collecting bottle 9, when the collecting bottle 9 is sleeved, the collecting bottle 9 or the collecting cylinder 1 is slid, so that the sealing plate 2 abuts against the inner wall of the blocking end of the collecting bottle 9, because the outer wall of the sealing plate 2 overlaps with the inner wall of the collecting bottle 9, whether the collecting bottle 9 or the collecting cylinder 1 is slid, the sealing plate 2 abuts against the gas in the collecting bottle 9, because the second through hole 5 is in the communicated state, with the extrusion of the sealing plate 2, the gas in the collecting bottle 9 is discharged through the second through hole 5, when the sealing plate 2 overlaps with the inner wall of the blocking end of the collecting bottle 9, the air in the collecting bottle 9 can be effectively discharged, at this time, the second through hole 5 is blocked by the blocking piece 8, then the collecting cylinder 1 and the collecting bottle 9 are placed in the area to be collected, then the piston rod 3 is pulled to slide to the end far away from the sealing plate 2, at this time, the collecting pipe 6 sucks the external air into the collecting cylinder 1, then the piston rod 3 is pulled to reset, so that the collected gas sample in the collecting cylinder 1 is sucked into the collecting bottle 9 through the first through hole 4, because the second through hole 5 is blocked, when the collected gas sample is injected into the collecting bottle 9, the gas pushes the collecting bottle 9 to slide away from the collecting cylinder 1, so that the collecting bottle 9 is filled with the collected gas sample, when the collection is completed, the collecting bottle 9 is removed from the collecting cylinder 1, then the piston plug or the bottle cap blocks the collecting bottle 9, so that the collection work is completed;
[0028] In the present scheme, when collecting gas, the piston rod 3 is first fully inserted into the collection cylinder 1, and then the collection cylinder 1 is inserted into the collection bottle 9. With the insertion of the collection cylinder 1, the gas carried by the collection bottle 9 itself is discharged through the second through hole 5. After the gas carried by itself is discharged, the second through hole 5 is blocked by the blocking piece 8, and then the piston rod 3 is reciprocatingly slid. Under the cooperation of the two one-way valves 7, the collected gas sample is transported into the collection bottle 9. The gas in the collection bottle 9 is first emptied, and then the collected gas sample is filled, so as to ensure the subsequent monitoring result.
[0029] As shown in Figure 2 and Figure 5 , the specific structure of the blocking piece 8 of the utility model is disclosed to realize the blocking or unblocking of the second through hole 5. The blocking piece 8 comprises a bracket 801 arranged on the collection cylinder 1. A lead screw 802 is threaded through the bracket 801. The end of the lead screw 802 is connected with a rubber head 803 which is inserted and cooperated with the second through hole 5. When it is needed to block the second through hole 5, the lead screw 802 is twisted and moved to drive the rubber head 803 to be inserted into the second through hole 5. Preferably, the diameter of the rubber head 803 is slightly larger than the inner diameter of the second through hole 5. The second through hole 5 is blocked by using the material deformation characteristics of the rubber head 803. When it is needed to unblock, the lead screw 802 is twisted in the opposite direction. The blocking or unblocking mode is relatively simple and convenient.
[0030] As shown in Figure 2 , the further technical scheme of the utility model for the sliding of the collection bottle 9 is disclosed. A sliding groove 10 is arranged on the bracket 801. A sliding block 11 is slidably inserted into the sliding groove 10. The collection bottle 9 is detachably connected with the sliding block 11. The sliding groove 10 is arranged on the bracket 801. The sliding block 11 is slidably arranged in the sliding groove 10. The collection bottle 9 is detachably installed on the sliding block 11. It is not only used for guiding the sliding of the collection bottle 9 to make the sliding more stable, but also avoids the collection bottle 9 from falling off after completely sliding away from the collection cylinder 1 by guiding the sliding of the collection bottle 9 under the action of the gas pressure when the piston rod 3 is pulled to inject gas into the collection bottle 9.
[0031] As shown in Figure 3 , the further technical scheme of the utility model for the installation or dismounting of the collection bottle 9 is disclosed. A rubber block 12 is arranged on the sliding block 11. A clamping groove 13 is arranged on the rubber block 12. The collection bottle 9 is clamped and cooperated with the clamping groove 13. Preferably, the clamping groove 13 is an arc-shaped groove. The caliber of the slot is smaller than the diameter of the collection bottle 9. By using the material deformation characteristics of the rubber block 12, the collection bottle 9 can be clamped in the clamping groove 13 by applying a certain force, so as to be fixed. When it is needed to unfix, a certain force is applied to take off the collection bottle 9. The installation or dismounting mode is relatively simple and convenient.
[0032] As shown in Figure 5As shown in the further technical scheme of the utility model for the collection bottle 9 to exclude its own air, the sealing ring 14 is sleeved on the sealing plate 2, and when the sealing plate 2 is inserted into the collection bottle 9, the sealing plate 2 applies a certain extrusion force to the sealing ring 14 in cooperation with the collection bottle 9, thereby improving the sealing property between the sealing plate 2 and the collection bottle 9, so as to ensure that the air in the collection bottle 9 can be effectively extruded when the sealing plate 2 slides, and the gas carried by itself can be effectively discharged through the second through hole 5.
[0033] As shown in the further technical scheme of the utility model for the collection bottle 9 to exclude its own air, the sealing ring 14 is sleeved on the sealing plate 2, and when the sealing plate 2 is inserted into the collection bottle 9, the sealing plate 2 applies a certain extrusion force to the sealing ring 14 in cooperation with the collection bottle 9, thereby improving the sealing property between the sealing plate 2 and the collection bottle 9, so as to ensure that the air in the collection bottle 9 can be effectively extruded when the sealing plate 2 slides, and the gas carried by itself can be effectively discharged through the second through hole 5. Figure 3 and Figure 4 As shown in the further technical scheme of the utility model for the collection bottle 9 to exclude its own air, the sealing ring 14 is sleeved on the sealing plate 2, and when the sealing plate 2 is inserted into the collection bottle 9, the sealing plate 2 applies a certain extrusion force to the sealing ring 14 in cooperation with the collection bottle 9, thereby improving the sealing property between the sealing plate 2 and the collection bottle 9, so as to ensure that the air in the collection bottle 9 can be effectively extruded when the sealing plate 2 slides, and the gas carried by itself can be effectively discharged through the second through hole 5.
[0034] As shown in the further technical scheme of the utility model for the collection bottle 9 to exclude its own air, the sealing ring 14 is sleeved on the sealing plate 2, and when the sealing plate 2 is inserted into the collection bottle 9, the sealing plate 2 applies a certain extrusion force to the sealing ring 14 in cooperation with the collection bottle 9, thereby improving the sealing property between the sealing plate 2 and the collection bottle 9, so as to ensure that the air in the collection bottle 9 can be effectively extruded when the sealing plate 2 slides, and the gas carried by itself can be effectively discharged through the second through hole 5. Figure 4 As shown in the further technical scheme of the utility model for the collection bottle 9 to exclude its own air, the sealing ring 14 is sleeved on the sealing plate 2, and when the sealing plate 2 is inserted into the collection bottle 9, the sealing plate 2 applies a certain extrusion force to the sealing ring 14 in cooperation with the collection bottle 9, thereby improving the sealing property between the sealing plate 2 and the collection bottle 9, so as to ensure that the air in the collection bottle 9 can be effectively extruded when the sealing plate 2 slides, and the gas carried by itself can be effectively discharged through the second through hole 5.
[0035] As shown in the further technical scheme of the utility model for the collection bottle 9 to exclude its own air, the sealing ring 14 is sleeved on the sealing plate 2, and when the sealing plate 2 is inserted into the collection bottle 9, the sealing plate 2 applies a certain extrusion force to the sealing ring 14 in cooperation with the collection bottle 9, thereby improving the sealing property between the sealing plate 2 and the collection bottle 9, so as to ensure that the air in the collection bottle 9 can be effectively extruded when the sealing plate 2 slides, and the gas carried by itself can be effectively discharged through the second through hole 5. Figure 2As shown, the utility model discloses further technical scheme for the collection pipe 6, and the collection pipe 6 adopts the hose and its free end is provided with the pipe cap 22, because the collection cylinder 1 is inserted in the collection bottle 9, therefore, the collection pipe 6 has certain length, by adopting the hose (rubber hose) for the collection pipe 6, so that when the first collection is completed, the gas in the collection pipe 6 can be extruded and discharged, and then the pipe cap 22 is sealed again, to avoid the influence of residual gas in it on subsequent collection.
[0036] The above description of disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A portable gas sampler, characterized in that, include: A collection tube (1) is provided with a sealing plate (2) at one end. A piston rod (3) is movably inserted into the collection tube (1). A first through hole (4) and a second through hole (5) are provided through the sealing plate (2). The first through hole (4) is connected to the collection tube (1). A collection tube (6) is connected to the end of the collection tube (1) near the sealing plate (2). A one-way valve (7) is provided in both the first through hole (4) and the collection tube (6). A sealing component (8) for sealing the second through hole (5) is provided on the collection tube (1). The collection bottle (9) has an open end, and the sealing plate (2) is inserted into the collection bottle (9).
2. The portable gas sampler according to claim 1, characterized in that, The sealing component (8) includes a bracket (801) set on the collection tube (1), a screw (802) threaded through the bracket (801), and a rubber head (803) connected to the end of the screw (802) to engage with the second through hole (5).
3. The portable gas sampler according to claim 2, characterized in that, The bracket (801) has a groove (10) and a slider (11) is slidably inserted in the groove (10). The collection bottle (9) and the slider (11) are detachably connected.
4. The portable gas sampler according to claim 3, characterized in that, A rubber block (12) is constructed on the slider (11), and a slot (13) is provided on the rubber block (12), and the collection bottle (9) is engaged with the slot (13).
5. The portable gas sampler according to claim 1, characterized in that, A sealing ring (14) is fitted onto the sealing plate (2).
6. The portable gas sampler according to claim 1, characterized in that, An arc-shaped groove (15) is provided through one side of the collection bottle (9), and a rubber membrane (16) is provided inside the arc-shaped groove (15). An arc-shaped plate (17) corresponding to the arc-shaped groove (15) is hinged on the collection bottle (9), and a circular plate (18) is provided on the inner wall of the arc-shaped plate (17).
7. The portable gas sampler according to claim 6, characterized in that, U-shaped blocks (19) are fixed on both the collection bottle (9) and the arc plate (17), and a screw (20) is hinged on one of the U-shaped blocks (19), with a nut (21) threaded onto the free end of the screw (20).
8. The portable gas sampler according to claim 1, characterized in that, The collection tube (6) is a flexible tube with a cap (22) fitted at its free end.