Air sampling tube

Abstract

The utility model discloses an air sampling pipe. The air sampling pipe comprises a first sampling pipe, a fixing plate and a mounting plate, an air pump is arranged on one side of the first sampling pipe, and a second sampling pipe is arranged at the top of the first sampling pipe; the fixed plate is arranged in the first sampling tube; the mounting plate is arranged in the first sampling pipe and is positioned below the fixed plate; through the arrangement of the sealing ring D, the second sampling pipe and the first sampling pipe can be sealed for the first time, and the sealing ring A and the sealing ring B can be used together for sealing for the second time; the second sampling pipe and the first sampling pipe can be sealed for the third time by utilizing a sealing ring C between the second sampling pipe and the first sampling pipe, so that the condition of air leakage is avoided; a sealing ball moves downwards to seal a fixing hole in the surface of a mounting plate, so that the situation that collected gas leaks out is avoided, and meanwhile, external gas is prevented from entering a first sampling pipe and a second sampling pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to sampling pipe technical field, concretely is an air sampling pipe. BACKGROUND

[0002] Air refers to the gas mixture in the earth's atmosphere, so air belongs to mixture, and the composition of air is not fixed, and with the change of height and air pressure, the composition ratio of air will change, in air environment monitoring, the sampling pipe is one of the indispensable tools.

[0003] In the related art, through retrieval, a kind of air sampling absorption pipe (announcement number: CN220932517U) scheme is found, when using, the cooperation between the absorption cylinder one, absorption cylinder two, circular top plate, mounting rod and anti-backflow mechanism can be used when being installed on sampler to carry out good anti-backflow treatment to sampler, avoid the gas after sampling from absorption pipe again, affect the sampling effect of sampler.

[0004] However, the above-mentioned air sampling pipe adopts absorption pipe body, absorption cylinder one and absorption cylinder two, and gas is discharged into the inside of absorption pipe body, absorption cylinder one and absorption cylinder two for collection, however, such sampling pipe cannot guarantee that the connection of absorption pipe body, absorption cylinder one and absorption cylinder two has good sealing property under long-term use, thereby leading to poor sealing effect;At the same time, sampling pipe is not convenient to connect and disassemble with air pump, leading to very inconvenient use, and when disassembled with air pump, sampling pipe cannot be sealed, leading to that gas in sampling pipe is easy to disperse, and air in external environment is easy to enter and mix with collected gas, thereby leading to that the result error of gas detection is large. In view of this, we launch a kind of air sampling pipe. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of air sampling pipe to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of air sampling pipe, comprising: first sampling pipe, fixed plate and mounting plate;

[0007] The side of the first sampling pipe is provided with air pump, and the top of the first sampling pipe is provided with second sampling pipe;

[0008] The fixed plate is arranged in the inside of first sampling pipe, and the fixed plate and first sampling pipe are fixedly arranged;

[0009] The mounting plate is arranged in the inside of first sampling pipe and below the fixed plate, and the mounting plate and first sampling pipe are fixedly arranged, the surface of the mounting plate is provided with fixed hole, and the fixed hole and mounting plate are integrally formed;

[0010] The sealing mechanism is provided between the first sampling pipe and the second sampling pipe, and the sealing ring A, the sealing ring B and the sealing ring C are used together to seal the first sampling pipe and the second sampling pipe.

[0011] Preferably, the sealing mechanism comprises a first fixed ring connected to the surface of the first sampling pipe, and the first fixed ring is fixedly arranged on the first sampling pipe; a second fixed ring is connected to the surface of the second sampling pipe, and the second fixed ring is fixedly arranged on the second sampling pipe; a threaded ring is connected to the surface of the first fixed ring, and the threaded ring is fixedly arranged on the first fixed ring; the threaded ring is screwed into the second fixed ring; the outer thread on the surface of the threaded ring is matched and screwed with the inner thread in the second fixed ring; the sealing ring A is connected to the inside of the second fixed ring and in contact with the surface of the threaded ring; the sealing ring B is connected to the inside of the second fixed ring on one side of the sealing ring A; the sealing ring A and the sealing ring B are used together to seal the second sampling pipe and the first sampling pipe; and the sealing ring C is connected between the first sampling pipe and the second sampling pipe, and the sealing ring C can further seal the first sampling pipe and the second sampling pipe.

[0012] Preferably, the surface of the first sampling pipe is connected with an air outlet pipe, and the air outlet pipe is integrally formed with the first sampling pipe; one end of the air outlet pipe extends into the second sampling pipe; and a sealing ring D is connected between the air outlet pipe and the second sampling pipe, and the sealing ring D can seal the second sampling pipe and the first sampling pipe.

[0013] Preferably, the bottom of the fixed plate is connected with a spring, and the spring is fixedly arranged on the fixed plate; the bottom of the spring is connected with a connecting frame, and the connecting frame is fixedly arranged on the spring; the inside of the connecting frame is connected with a sealing ball; and the sealing ball is connected with the fixed hole, and the sealing ball is blocked in the fixed hole by the elastic force of the spring to form a seal.

[0014] Preferably, the top of the connecting frame is connected with a limiting rod, and the limiting rod penetrates the fixed plate; and the limiting rod is arranged to keep the movement of the connecting frame and the sealing ball in a vertical state.

[0015] Preferably, the surface of the fixed plate is provided with a through hole, and the through hole is integrally formed with the fixed plate.

[0016] Preferably, a limiting ring is sleeved on the limiting rod; the air pump is provided with a buckle connector; and the first sampling pipe is provided with a connecting pipe connected with the buckle connector.

[0017] Compared with the prior art, the utility model discloses the beneficial effects are: the utility model discloses the first sealing of second sampling pipe and first sampling pipe can be carried out through the setting of sealing ring D, rotates second sampling pipe, lets the internal thread of second fixed ring interior and the thread ring of first fixed ring surface intermatch screwing, can let second sampling pipe and first sampling pipe carry out the assembly, the common use of sealing washer A and sealing washer B can carry out the second sealing, and the sealing washer C between second sampling pipe and first sampling pipe can carry out the third sealing of second sampling pipe and first sampling pipe again, avoids the condition that leaks the air,

[0018] Through the inside of the through -hole, the inside of second sampling pipe is entered to gas, and then the gas is stored, avoids the gas to flow out, at this moment can pull out the air pump, under the action of spring's own elasticity, drives sealing ball to descend, sealing ball descends and carries out the sealing of fixed hole of mounting plate surface, avoids the situation that the gas that collects leaks to happen, simultaneously avoids the gas of outside to enter the inside of first sampling pipe and second sampling pipe, causes the result of the later gas detection to influence. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the whole structure schematic view of the utility model;

[0020] Figure 2 It is the structure schematic view when the utility model first sampling pipe and second sampling pipe are connected;

[0021] Figure 3 It is the structure schematic view of first sampling pipe side cut of the utility model;

[0022] Figure 4 It is the structure schematic view of the utility model sealing ball and mounting plate disengaging contact gas from fixed hole into through -hole.

[0023] In the drawing: 1, first sampling pipe;2, mounting plate;3, air pump;4, fixed hole;5, sealing ball;6, limit rod;7, through -hole;8, fixed plate;9, first fixed ring;10, second fixed ring;11, second sampling pipe;12, air outlet pipe;13, sealing washer A;14, sealing washer B;15, thread ring;16, sealing ring D;17, spring;18, sealing washer C;19, connecting frame;20, limit ring;21, connecting pipe;22, buckle type joint. DETAILED DESCRIPTION

[0024] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0025] Please refer to Figures 1-4 The present application provides a technical scheme: an air sampling tube, comprising: a first sampling tube 1, one side of the first sampling tube 1 is provided with an air pump 3, and the top of the first sampling tube 1 is provided with a second sampling tube 11;

[0026] A fixing plate 8 is arranged inside the first sampling tube 1.

[0027] An installation plate 2 is arranged inside the first sampling tube 1 and below the fixing plate 8, and a fixing hole 4 is formed in the surface of the installation plate 2.

[0028] A sealing mechanism is arranged between the first sampling tube 1 and the second sampling tube 11, and the sealing ring A13, the sealing ring B14 and the sealing ring C18 of the sealing mechanism are used together to seal the first sampling tube 1 and the second sampling tube 11.

[0029] The sealing mechanism comprises a first fixing ring 9 connected to the surface of the first sampling tube 1, and the first fixing ring 9 is fixedly arranged between the first sampling tube 1; the second sampling tube 11 is connected with a second fixing ring 10, and the second sampling tube 11 is fixedly arranged with the second fixing ring 10; the surface of the first fixing ring 9 is connected with a threaded ring 15, and the threaded ring 15 is fixedly arranged between the first fixing ring 9; the threaded ring 15 is screwed in the inside of the second fixing ring 10, and the external thread on the surface of the threaded ring 15 is matched and screwed with the internal thread in the inside of the second fixing ring 10; the sealing ring A13 is connected in the inside of the second fixing ring 10 and in contact with the surface of the threaded ring 15; the sealing ring B14 is connected in the inside of the second fixing ring 10 and on one side of the sealing ring A13; the sealing ring A13 and the sealing ring B14 are used together to seal the second sampling tube 11 and the first sampling tube 1; and the sealing ring C18 is connected between the first sampling tube 1 and the second sampling tube 11, and the sealing ring C18 can further seal the first sampling tube 1 and the second sampling tube 11.

[0030] The surface of the first sampling pipe 1 is connected with an air outlet pipe 12, which is integrally formed between the first sampling pipe 1, one end of the air outlet pipe 12 extends to the inside of the second sampling pipe 11, a sealing ring D16 is connected between the air outlet pipe 12 and the second sampling pipe 11, which can seal between the second sampling pipe 11 and the first sampling pipe 1.

[0031] The bottom of the fixed plate 8 is connected with a spring 17, which is fixed between the fixed plate 8, the bottom of the spring 17 is connected with a connecting frame 19, which is fixed between the spring 17, the inside of the connecting frame 19 is connected with a sealing ball 5, which is connected with the fixed hole 4, using the elastic force of the spring 17 itself, the sealing ball 5 is blocked in the inside of the fixed hole 4, forming a seal.

[0032] The top of the connecting frame 19 is connected with a limiting rod 6, which penetrates the fixed plate 8, using the setting of the limiting rod 6, the movement of the connecting frame 19 and the sealing ball 5 is always in the vertical state, there is also a sealing ring on the fixed plate 8 (not shown in the figure), so that the limiting rod 6 can move up and down after penetrating, and the sealing property of the penetrating part of the limiting rod 6 and the fixed plate 8 can be guaranteed.

[0033] The surface of the fixed plate 8 is provided with a through hole 7, which is integrally formed between the fixed plate 8.

[0034] The limiting rod 6 is sleeved with a limiting ring 20, the specific connection of the first sampling pipe 1 and the air pump 3 is shown in Figure 1 The air pump 3 is equipped with a buckle type joint 22, the first sampling pipe 1 has a connecting pipe 21, so that the buckle type joint 22 can be quickly connected with the connecting pipe 21, this way is more common, which can be quickly connected and disassembled, and has good airtightness.

[0035] Specifically, in use, the second sampling pipe 11 is placed on the top of the first sampling pipe 1, the air outlet pipe 12 on the surface of the first sampling pipe 1 is inserted into the inside of the second sampling pipe 11, the first sealing is realized between the second sampling pipe 11 and the first sampling pipe 1 by the sealing ring D16, the second fixed ring 10 on the surface of the second sampling pipe 11 is close to the surface of the first fixed ring 9, then the second sampling pipe 11 is rotated, the internal thread of the second fixed ring 10 is matched and screwed with the thread ring 15 on the surface of the first fixed ring 9, the second sampling pipe 11 and the first sampling pipe 1 are assembled by continuously rotating the second sampling pipe 11, the thread ring 15 contacts the surface of the sealing ring A13, the second sealing is realized by the cooperation of the sealing ring A13 and the sealing ring B14, the third sealing is realized between the second sampling pipe 11 and the first sampling pipe 1 by the sealing ring C18, the air leakage is avoided, and the use is more convenient.

[0036] By starting the air pump 3, the air pump 3 is used to pump the external gas into the inside of the first sampling pipe 1 through the air inlet, the gas is pressurized through the fixed hole 4 on the surface of the mounting plate 2, the gas pressure gradually increases, the pushing force generated by the gas pressure at the fixed hole 4 is greater than the acting force generated by the spring 17, so that the sealing ball 5 is pushed upward, the sealing ball 5 drives the connecting frame 19 to move upward, the connecting frame 19 presses the spring 17, the limiting rod 6 on the top of the connecting frame 19 moves on the surface of the fixed plate 8, so as to limit the movement of the sealing ball 5, when the limiting ring 20 of the limiting rod 6 contacts the bottom surface of the fixed plate 8, the further movement of the sealing ball 5 is limited, at this time, the sealing ball 5 and the connecting frame 19 are in a stable state, at this time, the gas enters into the inside of the second sampling pipe 11 through the through hole 7, and the gas is stored, so as to avoid the outflow of the collected gas, when the gas pressure in the second sampling pipe 11 reaches a certain value / set value, the air pump 3 is pulled out, that is, the buckle joint 22 is disconnected with the connecting pipe 21, so that the spring 17 rebounds under the action of its own elastic force, drives the sealing ball 5 to move downward, the sealing ball 5 moves downward and reseals the fixed hole 4 on the surface of the mounting plate 2, avoids the leakage of the collected gas, and avoids the external gas entering into the inside of the first sampling pipe 1 and the second sampling pipe 11, so as to avoid the influence on the detection result of the gas in the later period.

[0037] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An air sampling tube, characterized by, The utility model relates to a sampling device, including: First sampling pipe (1), one side of first sampling pipe (1) is equipped with air pump (3), the top of first sampling pipe (1) is equipped with second sampling pipe (11); Fixed plate (8) is arranged in the inside of first sampling pipe (1); Mounting plate (2) is arranged in the inside of first sampling pipe (1) and is located below fixed plate (8), and the surface of mounting plate (2) is provided with fixed hole (4); The sealing mechanism is arranged between first sampling pipe (1) and second sampling pipe (11), the sealing ring A (13), the sealing ring B (14) and the sealing ring C (18) of sealing mechanism are used in cooperation to seal first sampling pipe (1) and second sampling pipe (11) by the sealing ring A (13), the sealing ring B (14) and the sealing ring C (18).

2. An air sampling tube according to claim 1, wherein, The sealing mechanism includes the first fixed ring (9) connected to the surface of first sampling pipe (1), the surface of second sampling pipe (11) is connected with second fixed ring (10), the surface of first fixed ring (9) is connected with threaded ring (15), threaded ring (15) is screwed in the inside of second fixed ring (10), sealing ring A (13) is connected in the inside of second fixed ring (10), and sealing ring A (13) is in surface contact with threaded ring (15), sealing ring B (14) is connected in the inside of second fixed ring (10) on one side of sealing ring A (13), and sealing ring C (18) is connected between first sampling pipe (1) and second sampling pipe (11).

3. An air sampling tube according to claim 2, wherein, The surface of first sampling pipe (1) is connected with air outlet pipe (12), one end of air outlet pipe (12) extends to the inside of second sampling pipe (11), and sealing ring D (16) is connected between air outlet pipe (12) and second sampling pipe (11).

4. An air sampling tube according to claim 1, wherein, The bottom of fixed plate (8) is connected with spring (17), the bottom of spring (17) is connected with connecting frame (19), the inside of connecting frame (19) is connected with sealing ball (5), and sealing ball (5) is connected with fixed hole (4).

5. An air sampling tube according to claim 4, wherein, The top of connecting frame (19) is connected with limiting rod (6), and limiting rod (6) penetrates fixed plate (8).

6. An air sampling tube according to claim 1, wherein, The surface of fixed plate (8) is provided with through-hole (7).

7. An air sampling tube according to claim 5, wherein The limiting ring (20) is sleeved on the limiting rod (6), the air pump (3) is provided with buckle joint (22), the first sampling pipe (1) has connecting pipe (21), and the connecting pipe (21) is connected with buckle joint (22).

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