Low-concentration blank collection rod

Abstract

The utility model provides a low-concentration blank collection rod, which belongs to the technical field of particulate matter sampling, and comprises a sealing aluminum cylinder, a front bent pipe, a sampling nozzle, a connecting rod, a connecting seat, a sleeve, a screw rod, a nut, a clamping seat and a sealing plug, the front end of the sealing aluminum cylinder is provided with the front bent pipe, and the other end of the front bent pipe is provided with the sampling nozzle; the screw rod, the nut and the clamping seat are arranged at the upper end and the lower end of the connecting seat, the rectangular groove in the inner side of the clamping seat can be clamped into the outer end of the flue from the edge of the flue measuring hole, and the clamping seat can be respectively clamped at the upper end and the lower end of the flue measuring hole, so that the connecting seat is erected in the flue measuring hole, and the sampling pipe is fixed on the flue; the sampling rod does not need to be held by hand for long-time standing for sampling operation, so that sampling is more convenient and labor-saving, the lengths of the screw rod and the clamping seat can be automatically adjusted according to the size of the flue measuring hole, the device is suitable for flue measuring holes of various sizes, and the use adaptability is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of particle sampling, in particular to a low-concentration blank collection rod. Background Art

[0002] When sampling low-concentration particulate matter, HJ 836-2017 "Gravimetric method for determination of low-concentration particulate matter in waste gas from stationary pollution sources" gives a clear definition of "full-procedure blank" and requires that the full-procedure blank should be performed once in each measurement series and at least once a day;

[0003] During sampling, the sampling nozzle should be facing away from the exhaust gas flow direction, and the placement time and movement method of the sampling tube in the flue should be the same as the actual sampling;

[0004] It has been found in actual use that the existing low-concentration blank sampling has the following shortcomings:

[0005] The main difficulties currently exist are that, for a few working conditions that meet the conditions, in order to save time for blank sample collection, two sets of equipment and two sets of personnel are required to work simultaneously, resulting in additional manpower and material costs. In addition, when sampling, it is necessary to manually hold the sampling rod and extend it into the flue measurement hole for 1 hour, and the position of the sampling rod needs to be adjusted at all times to ensure the orientation between the sampling nozzle and the airflow. In this way, standing outside the flue for a long time to manually hold the sampling rod and perform the collection operation makes sampling very laborious.

[0006] Moreover, most working conditions are limited by conditions. The diameter of the existing flue measurement holes is fixed, and the diameters of the flue measurement holes are also different. When collecting blank samples synchronously, it is necessary to open another hole for synchronous measurement, resulting in poor applicability of low-concentration blank sampling rods.

[0007] Therefore, the present application provides a low-concentration blank collection rod to meet the demand. Utility Model Content

[0008] The utility model aims to solve the problems existing in the above-mentioned background technology and proposes a low-concentration blank collection rod.

[0009] The technical problem to be solved by the utility model is to provide a low-concentration blank collection rod to solve the problems of the existing low-concentration blank collection rod.

[0010] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0011] A low-concentration blank collection rod comprises: a sealed aluminum cylinder, a front bent tube, a sampling nozzle, a connecting rod, a connecting seat, a sleeve, a screw, a nut, a holder and a sealing plug, wherein the front end of the sealed aluminum cylinder is equipped with the front bent tube, the other end of the front bent tube is equipped with the sampling nozzle, the other end of the sealed aluminum cylinder is equipped with a connecting rod, the outer end of the connecting rod is equipped with a connecting seat, the inner side of the connecting seat is equipped with a screw, the outer end of the screw is equipped with a nut, the other end of the screw is equipped with a holder, and the outer end of the connecting rod is also equipped with a sealing plug.

[0012] Preferably, the connecting seat is disc-shaped and is made of stainless steel.

[0013] Preferably, a circular hole is opened in the middle of the connecting seat, and a sleeve passes through the connecting seat and extends to the two outer ends of the connecting seat, and the connecting seat is nested at the outer end of the connecting rod through the sleeve.

[0014] Preferably, two groups of the screw rod, nut and socket are provided, and the two groups of screw rod, nut and socket are respectively located at the upper and lower ends of the connecting seat in a mirror-symmetrical manner.

[0015] Preferably, a cavity is provided inside the connecting seat, and the screw rod vertically penetrates the connecting seat and extends to the inside of the connecting seat.

[0016] Preferably, the card seat is in a "concave" shape, an opening is provided at the front end of the card seat, and a rectangular groove is provided on the inner side of the card seat.

[0017] Preferably, the sealing plug fits with the sleeve, and the sealing plug is embedded in the sleeve to clamp the connecting rod and the connecting seat.

[0018] Compared with the prior art, the utility model has at least the following beneficial effects:

[0019] 1. By arranging screws, nuts and clamping seats at the upper and lower ends of the connecting seat, the rectangular groove on the inner side of the clamping seat can be clamped into the outer end of the flue from the edge of the flue measuring hole, and the clamping seat can be clamped at the upper and lower ends of the flue measuring hole respectively, so that the connecting seat is mounted in the flue measuring hole, so that the sampling tube is fixed on the flue, and there is no need to manually hold the collection rod and stand for a long time to perform the collection operation, making sampling more convenient and labor-saving;

[0020] 2. The screw can be extended and retracted on the connecting seat to adjust the length of the screw. The screw can be fixed to the connecting seat through the nut. The length of the screw and the seat can be freely adjusted. The length of the screw and the seat can be adjusted according to the size of the flue measuring hole, so that it is suitable for flue measuring holes of various sizes to ensure adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0024] Figure 3 This is a specific connection diagram of the connection base of the utility model;

[0025] Figure 4 It is a schematic diagram of the use of the utility model.

[0026] [reference numerals]

[0027] 1-sealed aluminum cylinder; 2-front bent tube; 3-sampling nozzle; 4-connecting rod; 5-connecting seat; 6-casing; 7-screw; 8-nut; 9-card holder; 10-sealing plug.

[0028] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4 A low-concentration blank collection rod is shown in an embodiment of the utility model, comprising: a sealed aluminum cylinder 1, a front bent tube 2, a sampling nozzle 3, a connecting rod 4, a connecting seat 5, a sleeve 6, a screw 7, a nut 8, a holder 9 and a sealing plug 10. The front end of the sealed aluminum cylinder 1 is equipped with the front bent tube 2, the other end of the front bent tube 2 is equipped with the sampling nozzle 3, the other end of the sealed aluminum cylinder 1 is equipped with a connecting rod 4, the outer end of the connecting rod 4 is equipped with a connecting seat 5, the inner side of the connecting seat 5 is equipped with a sleeve 6, the outer side of the connecting seat 5 is equipped with a screw 7, the outer end of the screw 7 is equipped with a nut 8, the other end of the screw 7 is equipped with a holder 9, and the outer end of the connecting rod 4 is also equipped with a sealing plug 10.

[0030] In this embodiment, the connecting seat 5 is disc-shaped and is made of stainless steel. The disc-shaped connecting seat 5 is convenient to be embedded in the flue measuring hole, and the connecting seat 5 made of stainless steel is not easily damaged.

[0031] In this embodiment, a circular hole is opened in the middle of the connecting seat 5, and the sleeve 6 passes through the connecting seat 5 and extends to the two outer ends of the connecting seat 5. The connecting seat 5 is nested at the outer end of the connecting rod 4 through the sleeve 6. The connecting seat 5 and the connecting rod 4 are separated. The connecting seat 5 can be flexibly moved horizontally at the outer end of the connecting rod 4 through the sleeve 6, so as to facilitate the embedding of the connecting seat 5 into the flue measuring hole.

[0032] In the present embodiment, two groups of screw rods 7, nuts 8 and clamping seats 9 are provided, and the two groups of screw rods 7, nuts 8 and clamping seats 9 are respectively located at the upper and lower ends of the connecting seat 5 in a mirror-symmetrical manner. By arranging screw rods 7, nuts 8 and clamping seats 9 at the upper and lower ends of the connecting seat 5, the clamping seats 9 can be respectively clamped at the upper and lower ends of the flue measuring hole, so that the connecting seat 5 is set in the flue measuring hole, so that the sampling tube is fixed on the flue, and there is no need for manual holding of the collection rod and standing for a long time to perform the collection operation, which makes sampling more convenient and labor-saving.

[0033] In this embodiment, a cavity is provided inside the connecting seat 5, and the screw rod 7 vertically penetrates the connecting seat 5 and extends to the inside of the connecting seat 5. The screw rod 7 can be extended and retracted on the connecting seat 5 to adjust the extended length of the screw rod 7. The screw rod 7 can be fixed to the connecting seat 5 by the nut 8. The length of the screw rod 7 and the holder 9 can be freely adjusted. The length of the screw rod 7 and the holder 9 can be adjusted according to the size of the flue measuring hole, so that it is suitable for flue measuring holes of various sizes to ensure adaptability of use.

[0034] In this embodiment, the holder 9 is in a "concave" shape, an opening is provided at the front end of the holder 9, and a rectangular groove is provided on the inner side of the holder 9. The rectangular groove on the inner side of the holder 9 can be inserted into the outer end of the flue from the edge of the flue measuring hole to fix the connecting seat 5 in the flue measuring hole.

[0035] In this embodiment, the sealing plug 10 fits with the sleeve 6, and the sealing plug 10 is embedded in the sleeve 6 to clamp the connecting rod 4 and the connecting seat 5. After adjustment, the sealing plug 10 is inserted into the sleeve 6 to fix the connecting rod 4 and the connecting seat 5, so that the sampling nozzle 3 on the connecting rod 4 remains in an upward position facing away from the airflow for fixed collection, making the sampling more accurate and eliminating the need to manually adjust the position of the collection rod at all times, making it more convenient to use.

Claims

1. A low-concentration blank collection rod, characterized in that: include: A sealed aluminum cylinder (1), a front bent tube (2), a sampling nozzle (3), a connecting rod (4), a connecting seat (5), a sleeve (6), a screw (7), a nut (8), a holder (9) and a sealing plug (10), wherein the front end of the sealed aluminum cylinder (1) is provided with the front bent tube (2), the other end of the front bent tube (2) is provided with the sampling nozzle (3), the other end of the sealed aluminum cylinder (1) is provided with the connecting rod (4), the outer end of the connecting rod (4) is provided with the connecting seat (5), the inner side of the connecting seat (5) is provided with the sleeve (6), the outer side of the connecting seat (5) is provided with the screw (7), the outer end of the screw (7) is provided with the nut (8), the other end of the screw (7) is provided with the holder (9), and the outer end of the connecting rod (4) is also provided with a sealing plug (10).

2. The low-concentration blank collection rod according to claim 1, characterized in that: The connecting seat (5) is in the shape of a disc and is made of stainless steel.

3. The low-concentration blank collection rod according to claim 1, characterized in that: A circular hole is provided in the middle of the connecting seat (5), and a sleeve (6) passes through the connecting seat (5) and extends to the two outer ends of the connecting seat (5). The connecting seat (5) is nested at the outer end of the connecting rod (4) through the sleeve (6).

4. The low-concentration blank collection rod according to claim 1, characterized in that: The screw rod (7), nut (8) and clamping seat (9) are provided in two groups, and the two groups of screw rods (7), nut (8) and clamping seat (9) are respectively located at the upper and lower ends of the connecting seat (5) in a mirror-symmetrical manner.

5. The low-concentration blank collection rod according to claim 1, characterized in that: A cavity is provided inside the connection seat (5), and the screw rod (7) vertically penetrates the connection seat (5) and extends into the interior of the connection seat (5).

6. The low-concentration blank collection rod according to claim 1, characterized in that: The card seat (9) is in a "concave" shape, an opening is provided at the front end of the card seat (9), and a rectangular groove is provided on the inner side of the card seat (9).

7. The low-concentration blank collection rod according to claim 1, characterized in that: The sealing plug (10) fits with the sleeve (6), and the sealing plug (10) is embedded in the sleeve (6) to clamp the connecting rod (4) and the connecting seat (5).

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