Air quality monitoring sampling device

Abstract

The present invention belongs to the technical field of air sampling, and discloses an air quality monitoring sampling device, comprising an upper shell and a lower shell, wherein an end cover is fixedly provided on the lower shell, and the end cover is detachably matched with the upper shell, a sampling bag is fixedly provided in the upper shell, a plurality of partition bars are fixedly provided in the sampling bag, and the interior of the sampling bag is divided into a plurality of sampling cavities by the plurality of partition bars, a rubber plug is fixedly provided in the through hole on each partition bar, a barbed tube is fixedly provided on the end cover, and the barbed tube is used in combination with the rubber plug; a piston plate is provided for the internal sliding seal of the lower shell, an external one-way valve is fixedly provided on the lower shell, an internal one-way valve is fixedly provided on the piston plate, and the internal one-way valve is connected to the barbed tube through a conduit; the present invention can continuously carry out air sampling operations once a day, does not need to use additional power, and is relatively convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of air sampling, and in particular relates to an air quality monitoring sampling device. Background Art

[0002] In the process of sampling air, some existing sampling devices perform sampling manually, which is undoubtedly laborious, while others perform air sampling by using power equipment in conjunction with suction equipment, which undoubtedly requires the coordination and power configuration of multiple devices. Therefore, the structure is relatively complex and prone to problems. Therefore, it is necessary to provide a device that can continuously sample air without the aid of external power. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an air quality monitoring sampling device, which effectively solves the problem that conventional sampling devices need to rely on external power for sampling and cannot automatically perform continuous air sampling.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an air quality monitoring sampling device, comprising an upper shell and a lower shell, an end cover is fixedly provided on the lower shell, and the end cover is detachably matched with the upper shell, a sampling bag is fixedly provided in the upper shell, and a liquid is filled in the space between the upper shell and the sampling bag, a plurality of partitions are fixedly provided in the sampling bag from top to bottom, and the interior of the sampling bag is divided into a plurality of sampling cavities by the plurality of partitions, a rubber plug is fixedly provided in the through hole on each partition, a thorn tube is fixedly provided on the end cover, and the thorn tube and the rubber plug are used in conjunction with each other; a piston plate is provided for the internal sliding seal of the lower shell, an external one-way valve is fixedly provided on the lower shell, an internal one-way valve is fixedly provided on the piston plate, and the internal one-way valve is connected with the thorn tube through a conduit; a vertical frame, a pulley frame and a power piece are also fixedly provided in the interior of the lower shell, wherein a pull rope is fixedly provided on the piston plate, one end of the pull rope passes through the rope hole on the vertical frame and bypasses the pulley frame to be used in conjunction with the power piece, a reset spring is wrapped around the pull rope, and the reset spring is located between the piston plate and the vertical frame;

[0005] The power part includes a cylinder, a piston column, a connecting rod and a plate body; wherein the cylinder body is fixedly arranged on the inner wall of the lower shell body away from the end of the piston plate, the piston column is slidably arranged in the cylinder body, the piston column is fixed to the plate body through the connecting rod, the plate body is fixed to the pull rope, and the interior of the cylinder body away from the end of the plate body is filled with evaporant.

[0006] Preferably, the top end of the sampling bag is a closed structure, and the bottom end of the sampling bag is an open structure; the top cross-sectional area and the middle cross-sectional area of ​​the sampling bag are equal, and the bottom cross-sectional area of ​​the sampling bag is larger than the middle cross-sectional area; the open end of the sampling bag is sleeved on the bottom opening of the upper shell body and fixed by pressing the end cover.

[0007] Preferably, the power component also includes a heating rod, a heat-conducting frame and a heat-absorbing frame; wherein the heating rod is fixedly arranged on the lower shell, and one end of the heating rod is placed inside the cylinder, the heating rod is fixedly arranged through the heat-conducting frame and the heat-absorbing frame, and the heat-absorbing frame is fixedly arranged on the outer wall of the lower shell.

[0008] Preferably, a tear is formed at the center of the rubber stopper; an inner cavity is formed inside the rubber stopper, the inner cavity is filled with high-pressure gas, and the top thickness and bottom thickness of the inner cavity are greater than the side thickness on both sides of the inner cavity.

[0009] Preferably, a plurality of external blocks are fixedly provided on the sampling bag, and the external blocks are arranged in one-to-one correspondence with the sampling cavities. Force storage inclined surfaces and stabilizing holes are symmetrically formed on the external blocks. A stabilizing rod is fixedly provided on the inner top wall of the upper shell body, and the stabilizing rod is slidably matched with the stabilizing holes on the external blocks. An elastic part is fixedly provided inside the upper shell body, and a limiting block is fixedly provided on the elastic part. A limiting inclined surface is formed on the limiting block, and the limiting inclined surface is used in conjunction with the force storage inclined surface.

[0010] Preferably, the elastic member includes two fixed rods, two telescopic springs, a sliding block and a horizontal rod; wherein the two fixed rods are fixedly arranged on the inner wall of the upper shell body, the two telescopic springs are respectively wrapped around the two fixed rods, the two fixed rods are respectively slidably matched with the two rod holes on the sliding block, and the sliding block is fixed by the horizontal rod and the limit block.

[0011] Preferably, a breathable valve is fixedly provided on one end of the upper shell body away from the end cover and on one end of the lower shell body away from the piston plate; the breathable valve allows air to pass through but prevents liquid from passing through.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] During operation, through the cooperation of the power parts, piston plates, sampling bags, etc., the temperature changes during the day and night can be used as power to drive the piston plate to move and draw the outside air into the sampling bag; and the air sampling operation once a day can be carried out continuously without the use of additional power, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0015] In the attached picture:

[0016] Figure 1 It is a schematic diagram of the structure of an air quality monitoring sampling device of the present invention;

[0017] Figure 2 It is a schematic cross-sectional structure diagram of an air quality monitoring sampling device of the present invention;

[0018] Figure 3 This is one of the schematic cross-sectional views of the upper shell of the present invention;

[0019] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0020] Figure 5 This is the second schematic diagram of the cross-sectional structure of the upper shell of the present invention;

[0021] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0022] Figure 7 This is one of the schematic diagrams of the internal structure of the lower shell of the present invention;

[0023] Figure 8 This is the second schematic diagram of the internal structure of the lower housing of the present invention;

[0024] Fig. 9 For the present invention Figure 2 The enlarged structural diagram at C in the middle;

[0025] In the figure: 1. upper shell; 2. lower shell; 3. end cover; 4. sampling bag; 5. spacer; 6. sampling cavity; 7. rubber plug; 8. thorn tube; 9. piston plate; 10. external one-way valve; 11. internal one-way valve; 12. vertical frame; 13. pulley frame; 14. pull rope; 15. reset spring; 16. cylinder; 17. piston column; 18. connecting rod; 19. plate; 20. heating rod; 21. heat-conducting frame; 22. heat-absorbing frame; 23. inner cavity; 24. external block; 25. force storage slope; 26. stabilizing hole; 27. stabilizing rod; 28. limit block; 29. ​​limit slope; 30. fixing rod; 31. telescopic spring; 32. sliding block; 33. horizontal rod; 34. air valve. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] Depend on Figure 1-Figure 9The present invention relates to an air quality monitoring sampling device, comprising an upper shell 1 and a lower shell 2, wherein an end cover 3 is fixedly arranged on the lower shell 2, and the end cover 3 is detachably matched with the upper shell 1. In order to solve the problem that in the process of sampling air by the existing sampling devices, some are sampled manually, which is undoubtedly laborious, and some are sampled by power equipment in combination with suction equipment, which undoubtedly requires multiple devices to cooperate and configure power, so the structure is relatively complex and prone to problems. Therefore, it is necessary to provide a device that can continuously sample air without the help of external power. The specific technical solution is as follows:

[0028] A sampling bag 4 is fixedly arranged in the upper shell 1, and the space between the upper shell 1 and the sampling bag 4 is filled with liquid. A plurality of partitions 5 are fixedly arranged in the sampling bag 4 from top to bottom, and the interior of the sampling bag 4 is divided into a plurality of sampling chambers 6 by the plurality of partitions 5. A rubber plug 7 is fixedly arranged in the through hole of each partition 5, and a thorn tube 8 is fixedly arranged on the end cover 3, and the thorn tube 8 is used in conjunction with the rubber plug 7; a piston plate 9 is provided in the internal sliding seal of the lower shell 2, an external one-way valve 10 is fixedly arranged on the lower shell 2, an internal one-way valve 11 is fixedly arranged on the piston plate 9, and the internal one-way valve 11 is connected with the thorn tube 8 through a conduit; a vertical frame 12, a pulley frame 13 and a power piece are also fixedly arranged in the interior of the lower shell 2, wherein a pull rope 14 is fixedly arranged on the piston plate 9, one end of the pull rope 14 passes through the rope hole on the vertical frame 12 and bypasses the pulley frame 13 and is used in conjunction with the power piece, and a return spring 15 is surrounded on the pull rope 14, and the return spring 15 is located between the piston plate 9 and the vertical frame 12;

[0029] The power part includes a cylinder 16, a piston column 17, a connecting rod 18 and a plate 19; wherein the cylinder 16 is fixedly arranged on the inner wall of the lower shell 2 away from the piston plate 9, the piston column 17 is slidably arranged in the cylinder 16, the piston column 17 is fixedly arranged with the plate 19 through the connecting rod 18, the plate 19 is fixedly arranged with the pull rope 14, and the interior of the cylinder 16 away from the plate 19 is filled with evaporant;

[0030] With this design, when in use, the device is installed at a location where air sampling is required. When the temperature is high during the day, the evaporative agent, such as alcohol, changes due to heat, causing the air pressure in the cylinder 16 to increase. Under the action of the high air pressure, the piston column 17 drives the plate 19 to move through the connecting rod 18, and the plate 19 drives the piston plate 9 to move through the pull rope 14, so that the piston plate 9 squeezes the return spring 15 and gradually approaches the vertical frame 12. In conjunction with the use of the external one-way valve 10 and the internal one-way valve 11, the outside air can enter the lower shell through the external one-way valve 10. 2 is located between the outer one-way valve 10 and the piston plate 9; when the temperature is low at night, the evaporant changes when it is cooled, so that the air pressure in the space between the outer one-way valve 10 and the piston plate 9 in the lower shell 2 is reduced. Under the action of the low air pressure and the return spring 15, the piston plate 9 squeezes the air entering the lower shell 2, so that the air in the space between the outer one-way valve 10 and the piston plate 9 in the lower shell 2 passes through the inner one-way valve 11 and the conduit and enters the interior of the piercing tube 8, and then is discharged into the interior of the sampling chamber 6 located at the top of the sampling bag 4;

[0031] At this time, the sampling cavity 6 at the top will expand and become larger in volume, and since the interior of the upper shell 1 is filled with liquid, such as water, in the initial state, the sampling bag 4 is located inside the water. Therefore, after the volume of the sampling cavity 6 increases, the buoyancy it is subjected to also increases. After maintaining the original position for a certain period of time, the sampling cavity 6 at the top of the sampling bag 4 will suddenly change and float to the surface due to the increase in buoyancy. At this time, since the position of the thorn tube 8 remains unchanged, the thorn tube 8 will relatively enter the interior of another sampling cavity 6 to facilitate the next sampling.

[0032] Specifically, the top of the sampling bag 4 is a closed structure, and the bottom of the sampling bag 4 is an open structure; and the top cross-sectional area and the middle cross-sectional area of ​​the sampling bag 4 are equal, and the bottom cross-sectional area of ​​the sampling bag 4 is larger than the middle cross-sectional area; the open end of the sampling bag 4 is sleeved on the bottom opening of the upper shell 1, and is fixed by pressing the end cover 3. To be precise, this installation method is similar to the pressing and fixing method of a garbage bag, wherein the upper shell 1 is equivalent to a garbage can, and the end cover 3 is equivalent to the annular cover on the garbage can; with this design, when in use, after the device is inverted as a whole, an appropriate amount of water is injected into the interior of the upper shell 1, and then the open end of the sampling bag 4 is sleeved on the upper shell 1, and then the end cover 3 on the lower shell 2 is snapped onto the upper shell 1, thereby realizing the installation process of the sampling bag 4.

[0033] Specifically, the power part also includes a heating rod 20, a heat-conducting frame 21 and a heat-absorbing frame 22; wherein the heating rod 20 is fixedly arranged on the lower shell 2, and one end of the heating rod 20 is placed inside the cylinder 16, the heating rod 20 is fixedly arranged with the heat-absorbing frame 22 through the heat-conducting frame 21, and the heat-absorbing frame 22 is fixedly arranged on the outer wall of the lower shell 2; with this design, the heat-absorbing frame 22 can absorb the heat generated by sunlight, and then transfer the heat to the heating rod 20 through the heat-conducting frame 21, so that the temperature of the evaporant can be affected by the heating rod 20.

[0034] Specifically, a tear is formed at the center of the rubber plug 7; an inner cavity 23 is formed inside the rubber plug 7, and high-pressure gas is injected into the inner cavity 23. The top thickness and bottom thickness of the inner cavity 23 are greater than the side thickness of the inner cavity 23 on both sides; this design makes it easier for the thorn tube 8 to enter through the tear, and the setting of the inner cavity 23 enables the rubber plug 7 to maintain a good sealing effect after the thorn tube 8 is detached from the rubber plug 7 during long-term use.

[0035] Further, a plurality of external blocks 24 are fixedly provided on the sampling bag 4, and the external blocks 24 are arranged one by one corresponding to the sampling chamber 6. A force storage inclined surface 25 and a stabilizing hole 26 are symmetrically formed on the external blocks 24. A stabilizing rod 27 is fixedly provided on the inner top wall of the upper shell 1, and the stabilizing rod 27 is slidably matched with the stabilizing hole 26 on the external block 24. An elastic member is fixedly provided inside the upper shell 1, and a limiting block 28 is fixedly provided on the elastic member. A limiting inclined surface 29 is formed on the limiting block 28, and the limiting inclined surface 29 is used in conjunction with the force storage inclined surface 25.

[0036] With this design, when the sampling bag 4 is affected by the buoyancy of water, the limiting slope 29 on the limiting block 28 blocks the force storage slope 25 on the external block 24, so that the sampling bag 4 maintains its original position. As air enters, the buoyancy increases until the limiting slope 29 separates from the force storage slope 25. At this time, the elastic part contracts, and under the action of the buoyancy of water, the sampling cavity 6 containing air floats to the surface. Conversely, the external block 24 corresponding to the outside of the next sampling cavity 6 is again located below the limiting block 28 to facilitate the next air sampling.

[0037] Specifically, the elastic member includes two fixed rods 30, two telescopic springs 31, a sliding block 32 and a horizontal rod 33; wherein the two fixed rods 30 are fixedly arranged on the inner wall of the upper shell 1, the two telescopic springs 31 are respectively surrounded by the two fixed rods 30, the two fixed rods 30 are respectively slidably matched with the two rod holes on the sliding block 32, and the sliding block 32 is fixedly arranged with the limit block 28 through the horizontal rod 33.

[0038] Specifically, a breathable valve 34 is fixedly provided on one end of the upper shell 1 away from the end cover 3 and on the end of the lower shell 2 away from the piston plate 9; the breathable valve 34 allows air to pass through but prevents liquid from passing through; such a design enables the interior of the upper shell 1 and part of the space of the lower shell 2 to be connected to the outside world to avoid affecting the movement of the sampling bag 4 or the piston plate 9.

[0039] Working principle:

[0040] When in use, the device is installed in the area where air sampling is required; when the temperature is high during the day, the heat generated by light irradiation is transferred to the heating rod 20 through the heat absorbing frame 22 and the heat conducting frame 21 in turn, and the evaporant in the cylinder 16 in the power part is heated and evaporated by the heating of the heating rod 20. Under the action of pressure, the piston column 17 in the cylinder 16 moves, and the piston column 17 drives the piston plate 9 to move through the connecting rod 18, the plate body 19, and the pull rope 14 in turn. After the piston plate 9 moves, it squeezes the reset spring 15 and allows the outside air to enter the inside of the cylinder 16 through the external one-way valve 10;

[0041] When the temperature is low at night, the evaporant in the cylinder 16 of the power part condenses after being cooled. At this time, under the action of the return spring 15, the piston plate 9 squeezes the air in the cylinder 16. At this time, the compressed air passes through the inner one-way valve 11 and the conduit and enters the interior of the sampling chamber 6 located at the top of the sampling bag 4;

[0042] In the initial state, with the limit block 28 blocking the external block 24, although air continues to enter, causing the buoyancy of the part of the sampling cavity 6 containing air to continue to increase, the position of the sampling cavity 6 containing air will remain unchanged until the limit block 28 is separated from the external block 24. At this time, under the action of the buoyancy of the water, the sampling cavity 6 containing air on the sampling bag 4 moves upward and leaves the water surface. At the same time, the external block 24 corresponding to the outside of the next sampling cavity 6 will move to the bottom of the limit block 28 to facilitate the next sampling.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air quality monitoring sampling device, comprising an upper shell (1) and a lower shell (2), wherein an end cover (3) is fixedly arranged on the lower shell (2), and the end cover (3) is detachably matched with the upper shell (1), characterized in that: A sampling bag (4) is fixedly arranged in the upper shell (1), and a liquid is filled in the space between the upper shell (1) and the sampling bag (4). A plurality of partition bars (5) are fixedly arranged in the sampling bag (4) from top to bottom, and the interior of the sampling bag (4) is divided into a plurality of sampling chambers (6) by the plurality of partition bars (5). A rubber plug (7) is fixedly arranged in the through hole of each partition bar (5). A thorn tube (8) is fixedly arranged on the end cover (3), and the thorn tube (8) is used in conjunction with the rubber plug (7). A piston plate (9) is provided in the internal sliding seal of the lower shell (2), and an outer A one-way valve (10), an inner one-way valve (11) is fixedly arranged on the piston plate (9), and the inner one-way valve (11) is connected to the thorn tube (8) through a conduit; a vertical frame (12), a pulley frame (13) and a power piece are fixedly arranged inside the lower shell (2), wherein a pull rope (14) is fixedly arranged on the piston plate (9), one end of the pull rope (14) passes through the rope hole on the vertical frame (12) and bypasses the pulley frame (13) and is used in conjunction with the power piece, and a return spring (15) is wrapped around the pull rope (14), and the return spring (15) is located between the piston plate (9) and the vertical frame (12); The power part comprises a cylinder (16), a piston column (17), a connecting rod (18) and a plate (19); wherein the cylinder (16) is fixedly arranged on the inner wall of the lower shell (2) at one end away from the piston plate (9), the piston column (17) is slidably arranged in the cylinder (16), the piston column (17) is fixedly arranged with the plate (19) through the connecting rod (18), the plate (19) is fixedly arranged with the pull rope (14), and an evaporant is injected into the interior of the cylinder (16) at one end away from the plate (19).

2. An air quality monitoring sampling device according to claim 1, characterized in that: The top end of the sampling bag (4) is a closed structure, and the bottom end of the sampling bag (4) is an open structure; the top cross-sectional area and the middle cross-sectional area of ​​the sampling bag (4) are equal, and the bottom cross-sectional area of ​​the sampling bag (4) is larger than the middle cross-sectional area; the open end of the sampling bag (4) is sleeved on the bottom opening of the upper shell (1) and is fixed by pressing the end cover (3).

3. An air quality monitoring sampling device according to claim 1, characterized in that: The power component further comprises a heating rod (20), a heat-conducting frame (21) and a heat-absorbing frame (22); wherein the heating rod (20) is fixedly arranged on the lower shell (2), and one end of the heating rod (20) is placed inside the cylinder (16); the heating rod (20) is fixedly arranged via the heat-conducting frame (21) and the heat-absorbing frame (22); and the heat-absorbing frame (22) is fixedly arranged on the outer wall of the lower shell (2).

4. An air quality monitoring sampling device according to claim 1, characterized in that: A tear is formed at the center of the rubber stopper (7); an inner cavity (23) is formed inside the rubber stopper (7); high-pressure gas is injected into the inner cavity (23); the top thickness and bottom thickness of the inner cavity (23) are greater than the side thickness of both sides of the inner cavity (23).

5. An air quality monitoring sampling device according to claim 1, characterized in that: A plurality of external blocks (24) are fixedly arranged on the sampling bag (4), the external blocks (24) are arranged in one-to-one correspondence with the sampling chamber (6), a force storage inclined surface (25) and a stabilizing hole (26) are symmetrically formed on the external blocks (24), a stabilizing rod (27) is fixedly arranged on the inner top wall of the upper shell (1), the stabilizing rod (27) and the stabilizing hole (26) on the external block (24) are slidably matched, an elastic member is fixedly arranged inside the upper shell (1), a limiting block (28) is fixedly arranged on the elastic member, a limiting inclined surface (29) is formed on the limiting block (28), and the limiting inclined surface (29) is used in conjunction with the force storage inclined surface (25).

6. An air quality monitoring sampling device according to claim 5, characterized in that: The elastic member comprises two fixed rods (30), two telescopic springs (31), a sliding block (32) and a horizontal rod (33); wherein the two fixed rods (30) are fixedly arranged on the inner wall of the upper shell (1); the two telescopic springs (31) are respectively surrounded by the two fixed rods (30); the two fixed rods (30) are respectively slidably matched with two rod holes on the sliding block (32); and the sliding block (32) is fixedly arranged with the limit block (28) via the horizontal rod (33).

7. An air quality monitoring sampling device according to claim 1, characterized in that: An air vent (34) is fixedly provided on one end of the upper shell (1) away from the end cover (3) and on one end of the lower shell (2) away from the piston plate (9); the air vent (34) allows air to pass through but prevents liquid from passing through.

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