Gas sampling rod

Abstract

The utility model relates to the technical field of gas sampling devices, and discloses a gas sampling rod which comprises a holding rod and a sampling pipe, three conveying pipes are fixedly communicated with the outer surface of the right side of the sampling pipe, the other ends of the three conveying pipes are fixedly communicated with sample storage pipes, three electric push rods are fixedly installed on the inner surface of the right side of the sampling pipe, and the electric push rods are fixedly connected with the holding rod. The inner walls of the three conveying pipes are movably provided with blocking blocks, the inner surface of the left side of the sampling pipe is fixedly connected with three first springs, the other end of the connecting bent pipe is fixedly communicated with a filtering box, and the outer surface, away from the connecting bent pipe, of the filtering box is fixedly communicated with a sampling barrel. By arranging the three sample storage pipes, when sampling is carried out at different positions, the corresponding electric push rods are started, and the conveying pipes are conducted in cooperation with the L-shaped plates, the first springs and the blocking blocks, so that gas at the three different positions can be sampled, gas samples do not interfere with one another, and the sampling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas sampling devices, and specifically relates to a gas sampling rod. Background Technique

[0002] A gas sampler is a conventional instrument used to collect gas samples in the atmospheric environment or working environment. It is fast and reliable in sampling and can be widely used in metallurgy, mines, chemical industries, construction, foundries, electric power, environmental monitoring, health and epidemic prevention, etc.

[0003] The existing patent (publication number: CN218584462U) discloses a gas sampling mechanism, including a sleeve. A height adjustment mechanism extending to the outer surface of the sleeve is provided inside the sleeve. The height adjustment mechanism includes a fixed ring fixedly installed on the inner side surface of the sleeve cavity. A threaded cylinder is rotatably installed inside the fixed ring. A threaded rod extending to the outer surface of the sleeve is threadedly connected inside the threaded cylinder. A first bevel gear is fixedly installed on the outer surface of the threaded cylinder. A damping sleeve is fixedly installed on the outer surface of the sleeve. For this gas sampling mechanism, by providing a threaded cylinder inside the sleeve, a threaded rod inside the threaded cylinder, a first bevel gear on the threaded cylinder, a second bevel gear meshing with the first bevel gear inside the sleeve cavity, a limiting rod inside the sleeve, and a chute on the threaded rod, the second bevel gear can be rotated to drive the first bevel gear, and then drive the threaded cylinder, so that the threaded rod can be lifted and lowered inside the threaded cylinder to realize the adjustment of the height of the gas collector.

[0004] The above patent technology can realize the height adjustment of the gas collector. However, in the actual use process, it can only sample the gas at a single location. When it is necessary to sample the gas at different locations, it is necessary to carry multiple gas sampling devices to separately collect the gas at different locations, which not only has low efficiency but also low practicability. Therefore, a gas sampling rod is proposed. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a gas sampling rod to solve the problems mentioned in the above background technique.

[0006] To achieve the above object, the utility model provides the following technical solution: A gas sampling rod, comprising a grip rod and a sampling tube. The outer surface of the right side of the sampling tube is fixedly communicated with three conveying tubes, and the other ends of the three conveying tubes are fixedly communicated with sample storage tubes. The inner surface of the right side of the sampling tube is fixedly installed with three electric push rods. Blocking blocks are movably arranged on the inner walls of the three conveying tubes. The outer surface of the blocking block is fixedly connected with an L-shaped plate. The inner surface of the left side of the sampling tube is fixedly connected with three movable rods, and the three movable rods respectively penetrate through the outer surface of the L-shaped plate. Three first springs are respectively sleeved on the outer surfaces of the three movable rods. The inner surface of the left side of the sampling tube is fixedly connected with three first springs, and the other ends of the three first springs are respectively fixedly connected with the three L-shaped plates. The outer surface of the top of the sampling tube is fixedly communicated with a connecting elbow pipe, the other end of the connecting elbow pipe is fixedly communicated with a filtering box, and the outer surface of the filtering box away from the connecting elbow pipe is fixedly communicated with a sampling cylinder.

[0007] Further, a fixing frame is fixedly connected to the inner surface of the sampling cylinder, a motor is fixedly installed on the outer surface of the fixing frame, the output end of the motor is fixedly connected with a rotating shaft, and a plurality of blades are fixedly sleeved on the outer surface of the rotating shaft.

[0008] Further, a fixing plate is movably inserted into the inner surface of the filtering box, a filter screen is arranged inside the fixing plate, a cleaning brush is fixedly sleeved on the outer surface of the rotating shaft, and one end of the cleaning brush is attached to the outer surface of the filter screen.

[0009] Further, through grooves are formed in the inner surface of the fixing plate, L-shaped rods are movably inserted at the positions of the through grooves on the upper and lower outer surfaces of the fixing plate, limiting holes are formed in the inner surface of the filtering box corresponding to the L-shaped rods, the L-shaped rods are adapted to the limiting holes, second springs are fixedly connected to the upper and lower inner surfaces of the fixing plate at the positions of the through grooves, and the other ends of the second springs are fixedly connected to the L-shaped rods.

[0010] Further, a receiving box is detachably connected to the outer surface of the bottom of the filtering box.

[0011] Further, an adjusting rod is movably inserted into the inner surface of the grip rod, positioning holes are formed in the outer surfaces of the grip rod and the adjusting rod, the number of positioning holes on the outer surface of the adjusting rod is several, and pins are arranged in the corresponding positioning holes of the grip rod and the adjusting rod.

[0012] Further, a battery box is fixedly connected to the outer surface of the grip rod, and a battery is arranged inside the battery box.

[0013] Further, the blocking block is a frustum of a cone with a thick left and a thin right, and a sealing gasket is fixedly connected to the outer surface of the blocking block.

[0014] Further, an exhaust pipe is fixedly communicated with the outer surface of the sample storage tube, and a solenoid valve is installed on the surface of the exhaust pipe.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. For this gas sampling rod, by providing three sample storage tubes, when sampling at different locations, the corresponding electric push rods are opened, and in cooperation with the L-shaped plate, the first spring and the plug, the delivery pipe is conducted, so that the gas at three different locations can be sampled, and the gas samples will not interfere with each other, improving the sampling efficiency.

[0017] 2. For this gas sampling rod, when the motor drives the rotating shaft to rotate, the cleaning brush is driven to rotate to clean the surface of the filter net, so that it is not necessary to frequently disassemble the filter net. When the filter net loses its normal function, the L-shaped rod is pulled to make the L-shaped rod disengage from the limiting hole, and then the fixing plate can be disassembled to take out and replace the filter net. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front view structural schematic diagram of the present utility model;

[0019] Figure 2 is a front view sectional structural schematic diagram of the present utility model;

[0020] Figure 3 is of the present utility model Figure 2 an enlarged structural schematic diagram at A in;

[0021] Figure 4 is a structural schematic diagram of the fixing plate of the present utility model;

[0022] Figure 5 is of the present utility model Figure 5 an enlarged structural schematic diagram at B in.

[0023] In the figure: 1, grip rod; 2, sampling tube; 3, delivery pipe; 4, sample storage tube; 5, electric push rod; 6, first spring; 7, L-shaped plate; 8, plug; 9, movable rod; 10, connecting elbow; 11, filter box; 12, sampling cylinder; 13, fixing bracket; 14, motor; 15, rotating shaft; 16, blade; 17, fixing plate; 18, filter net; 19, through groove; 20, L-shaped rod; 21, second spring; 22, receiving box; 23, adjusting rod; 24, cleaning brush. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Embodiment 1:

[0026] Please refer to Figures 1 - 5 , the present invention provides a technical solution: a gas sampling rod, including a grip rod 1 and a sampling tube 2. Three delivery tubes 3 are fixedly communicated with the outer surface on the right side of the sampling tube 2. The other ends of the three delivery tubes 3 are fixedly communicated with a sample storage tube 4. Three electric push rods 5 are fixedly installed on the inner surface on the right side of the sampling tube 2. A blocking block 8 is movably arranged on the inner wall of each of the three delivery tubes 3. An L-shaped plate 7 is fixedly connected to the outer surface of the blocking block 8. Three movable rods 9 are fixedly connected to the inner surface on the left side of the sampling tube 2. The three movable rods 9 respectively pass through the outer surface of the L-shaped plate 7 movably. Three first springs 6 are respectively sleeved on the outer surfaces of the three movable rods 9. Three first springs 6 are fixedly connected to the inner surface on the left side of the sampling tube 2. The other ends of the three first springs 6 are respectively fixedly connected to the three L-shaped plates 7. A connecting elbow 10 is fixedly communicated with the outer surface on the top of the sampling tube 2. The other end of the connecting elbow 10 is fixedly communicated with a filtering box 11. A sampling cylinder 12 is fixedly communicated with the outer surface of the filtering box 11 away from the connecting elbow 10. In this embodiment, when gas enters the sampling tube 2, according to needs, the corresponding electric push rod 5 is turned on. The electric push rod 5 works to drive the L-shaped plate 7 to move, so that the L-shaped plate 7 compresses the first spring 6. The L-shaped plate 7 drives the blocking block 8, so that the blocking block 8 disengages from the inside of the delivery tube 3, making the delivery tube 3 conductive. The gas enters the inside of the sample storage tube 4 through the delivery tube 3 for sample storage. After sampling, the electric push rod 5 is retracted, and the first spring 6 resets, driving the L-shaped plate 7 and the blocking block 8 to reset, so that the blocking block 8 blocks the delivery tube 3. When sampling different places, the corresponding electric push rod 5 is turned on to make the corresponding delivery tube 3 conductive, so that gas can be sampled at three different places, and the gas samples will not interfere with each other.

[0027] A fixing frame 13 is fixedly connected to the inner surface of the sampling cylinder 12. A motor 14 is fixedly installed on the outer surface of the fixing frame 13. The output end of the motor 14 is fixedly connected to a rotating shaft 15. A plurality of blades 16 are fixedly sleeved on the outer surface of the rotating shaft 15. In this embodiment, when the motor 14 is turned on, the motor 14 drives the rotating shaft 15 to rotate, and the rotating shaft 15 drives the blades 16 to rotate, generating negative pressure and accelerating the speed of gas entering the inside of the sampling cylinder 12, so that the gas enters the sampling tube 2.

[0028] The inner surface of the filter box 11 is movably inserted with a fixing plate 17. A filter screen 18 is arranged inside the fixing plate 17. A cleaning brush 24 is fixedly sleeved on the outer surface of the rotating shaft 15. One end of the cleaning brush 24 is attached to the outer surface of the filter screen 18. In this embodiment, during the operation of the motor 14, the cleaning brush 24 is driven to rotate to scrape the particles adsorbed on the surface of the filter screen 18.

[0029] A through groove 19 is formed on the inner surface of the fixing plate 17. L-shaped rods 20 are movably inserted at the positions of the upper and lower outer surfaces of the fixing plate 17 corresponding to the through groove 19. Limit holes are formed on the inner surface of the filter box 11 corresponding to the L-shaped rods 20. The L-shaped rods 20 are adapted to the limit holes. Second springs 21 are fixedly connected to the upper and lower inner surfaces of the fixing plate 17 at the positions of the through groove 19. The other ends of the second springs 21 are fixedly connected to the L-shaped rods 20. In this embodiment, when the filter screen 18 needs to be disassembled after being used for a period of time and losing its normal function, the L-shaped rods 20 are squeezed towards the middle. The L-shaped rods 20 drive the second springs 21 to compress, so that the L-shaped rods 20 are disengaged from the limit holes, and then the fixing plate 17 is disassembled, and thus the filter screen 18 can be disassembled and replaced.

[0030] The outer surface of the bottom of the filter box 11 is detachably connected with a material receiving box 22. In this embodiment, the impurities scraped from the surface of the filter screen 18 are collected through the material receiving box 22. It should be noted that the detachable connection here can be a detachable connection by bolts and nuts or a snap-type detachable connection.

[0031] An adjusting rod 23 is movably inserted into the inner surface of the grip rod 1. Positioning holes are formed on the outer surfaces of the grip rod 1 and the adjusting rod 23. The number of positioning holes on the outer surface of the adjusting rod 23 is several. A pin is arranged in the positioning holes corresponding to the grip rod 1 and the adjusting rod 23. In this embodiment, by adjusting the position of the adjusting rod 23 in the grip rod 1 and then inserting the pin into the corresponding positioning hole, the overall length of the sampling rod can be adjusted.

[0032] The outer surface of the grip rod 1 is fixedly connected with a battery box. A battery is arranged inside the battery box. In this embodiment, the battery provides the required electric energy for the electrical components in this device.

[0033] The plug block 8 is a frustum of a cone with a thick left and a thin right. A sealing gasket is fixedly connected to the outer surface of the plug block 8. In this embodiment, due to the frustum of a cone-shaped plug block 8 with a thick left and a thin right, the plug block 8 can completely block the conveying pipe 3, and the sealing gasket is arranged to increase the sealing performance between the plug block 8 and the conveying pipe 3.

[0034] An exhaust pipe is fixedly connected to the outer surface of the sample storage tube 4, and a solenoid valve is installed on the surface of the exhaust pipe. In this embodiment, after sampling is completed, the solenoid valve is opened to allow the gas to escape from the inside of the sample storage tube 4 (it should be noted that when sampling at a certain location, first make the delivery pipe 3 conductive, then open the solenoid valve to allow the gas to be discharged from the exhaust pipe. After staying at the sampling location for a period of time, it can ensure that the sampling tube 2 is filled with the gas at the sampling location. Then close the solenoid valve and store the gas to avoid leaving the gas from the previous sampling location in the sampling tube 2, resulting in errors in the gas detection after sampling).

[0035] Working principle: When the utility model is in use, when sampling is required, the device is carried to the sampling location. When sampling, adjust the position of the adjusting rod 23 in the grip rod 1. After adjustment, insert the pin into the corresponding positioning hole. When sampling, turn on the motor 14. The motor 14 drives the rotating shaft 15 to rotate, and the rotating shaft 15 drives the blade 16 to rotate, generating negative pressure and accelerating the speed of the gas entering the inside of the sampling cylinder 12, so that the gas enters the sampling tube 2. According to needs, turn on the corresponding electric push rod 5. The electric push rod 5 works to drive the L-shaped plate 7 to move, so that the L-shaped plate 7 compresses the first spring 6. The L-shaped plate 7 drives the plug 8, so that the plug 8 disengages from the inside of the delivery pipe 3, making the delivery pipe 3 conductive. The gas enters the inside of the sample storage tube 4 through the delivery pipe 3 for sample storage. After sampling is completed, retract the electric push rod 5, and the first spring 6 resets, driving the L-shaped plate 7 and the plug 8 to reset, so that the plug 8 blocks the delivery pipe 3. When sampling at different locations, turn on the corresponding electric push rod 5 to make the corresponding delivery pipe 3 conductive, so that the gas at three different locations can be sampled, and the gas samples will not interfere with each other. (It should be noted that when sampling at a certain location, first make the delivery pipe 3 conductive, then open the solenoid valve. After staying at the sampling location for a period of time, it can ensure that the sampling tube 2 is filled with the gas at the sampling location. Then close the solenoid valve and store the gas to avoid leaving the gas from the previous sampling location in the sampling tube 2, resulting in errors in the gas detection after sampling).

[0036] When the gas passes through the filter box 11, the particles mixed in the gas are filtered by the filter net 18. During the operation of the motor 14, the cleaning brush 24 is driven to rotate to scrape off the particles adsorbed on the surface of the filter net 18 and fall into the material receiving box 22 for collection. When the filter net 18 loses its normal function after being used for a period of time and needs to be disassembled, squeeze the L-shaped rod 20 towards the middle. The L-shaped rod 20 drives the second spring 21 to compress, so that the L-shaped rod 20 disengages from the limit hole, thereby disassembling the fixing plate 17 and disassembling the filter net 18 to replace the filter net 18.

[0037] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A gas sampling rod, comprising a grip rod (1) and a sampling tube (2), characterized in that: On the right outer surface of the sampling tube (2), three conveying tubes (3) are fixedly communicated. The other ends of the three conveying tubes (3) are fixedly communicated with sample storage tubes (4). On the right inner surface of the sampling tube (2), three electric push rods (5) are fixedly installed. In the inner walls of the three conveying tubes (3), blocking blocks (8) are movably arranged. On the outer surface of the blocking block (8), an L-shaped plate (7) is fixedly connected. On the left inner surface of the sampling tube (2), three first springs (6) are fixedly connected. The other ends of the three first springs (6) are respectively fixedly connected with the three L-shaped plates (7). On the left inner surface of the sampling tube (2), three movable rods (9) are fixedly connected. The three movable rods (9) respectively movably penetrate through the outer surface of the L-shaped plate (7). The three first springs (6) are respectively sleeved on the outer surfaces of the three movable rods (9). On the top outer surface of the sampling tube (2), a connecting elbow (10) is fixedly communicated. The other end of the connecting elbow (10) is fixedly communicated with a filtering box (11). On the outer surface of the filtering box (11) away from the connecting elbow (10), a sampling cylinder (12) is fixedly communicated.

2. The gas sampling rod according to claim 1, characterized in that: On the inner surface of the sampling cylinder (12), a fixing frame (13) is fixedly connected. On the outer surface of the fixing frame (13), a motor (14) is fixedly installed. The output end of the motor (14) is fixedly connected with a rotating shaft (15). On the outer surface of the rotating shaft (15), a number of blades (16) are fixedly sleeved.

3. The gas sampling rod according to claim 2, wherein: Inside the filtering box (11), a fixing plate (17) is movably inserted. Inside the fixing plate (17), a filter screen (18) is arranged. On the outer surface of the rotating shaft (15), a cleaning brush (24) is fixedly sleeved. One end of the cleaning brush (24) is in contact with the outer surface of the filter screen (18).

4. The gas sampling rod according to claim 1, characterized in that: On the inner surface of the fixing plate (17), a through groove (19) is formed. On the upper and lower outer surfaces of the fixing plate (17) at the through groove (19), L-shaped rods (20) are movably inserted. At the corresponding positions of the inner surface of the filtering box (11) and the L-shaped rods (20), limiting holes are formed. The L-shaped rods (20) are adapted to the limiting holes. On the upper and lower inner surfaces of the fixing plate (17) at the through groove (19), second springs (21) are fixedly connected. The other ends of the second springs (21) are fixedly connected with the L-shaped rods (20).

5. A gas sampling rod according to claim 1, characterized in that: On the bottom outer surface of the filtering box (11), a receiving box (22) is detachably connected.

6. The gas sampling rod according to claim 1, characterized in that: Inside the grip rod (1), an adjusting rod (23) is movably inserted. On the outer surfaces of the grip rod (1) and the adjusting rod (23), positioning holes are formed. The number of positioning holes on the outer surface of the adjusting rod (23) is several. In the corresponding positioning holes of the grip rod (1) and the adjusting rod (23), pins are arranged.

7. The gas sampling rod according to claim 1, characterized in that: On the outer surface of the grip rod (1), a battery box is fixedly connected. Inside the battery box, a battery is arranged.

8. A gas sampling rod according to claim 1, characterized in that: The blocking block (8) is in the shape of a frustum of a cone that is thick on the left and thin on the right. On the outer surface of the blocking block (8), a sealing gasket is fixedly connected.

9. The gas sampling rod according to claim 1, characterized in that: On the outer surface of the sample storage tube (4), an exhaust pipe is fixedly communicated. On the surface of the exhaust pipe, an electromagnetic valve is installed.

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