CN213544150U

CN213544150U - Rotation type dust fall sampling device

Info

Publication number: CN213544150U
Application number: CN202022544701.5U
Authority: CN
Inventors: 王俭
Original assignee: 王俭
Current assignee: Harbin Yancheng environmental testing Co.,Ltd.
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-06-25
Anticipated expiration: 2030-11-06

Abstract

The utility model discloses a rotary dust-fall sampling device, which comprises a fixed table, wherein the middle part of the top end of the fixed table is provided with a first threaded hole, the first threaded hole is in threaded connection with a support column, the top end of the support column is fixedly connected with a fixed plate, the top end of the fixed plate is fixedly connected with a fixed seat, and the top end of the inner wall of the fixed seat is fixedly provided with a motor, the rotary dust-fall sampling device of the utility model is a dynamic sampling device, the relative positions of two dust-fall cylinders with the same height, the same material and the same inlet area are not fixed and are in the same transformation, so that the ground dust-raise and the roof dust-raise have almost the same influence on the two dust, consequently, the precision of the parallel appearance analysis in laboratory is must be fine, drives the continuous low-speed rotation of dust fall jar through the motor, makes birds can't perch on the dust fall jar to make rotatory sampling effectively prevent the interference of birds.

Description

Rotation type dust fall sampling device

Technical Field

The utility model relates to a dust fall sampling field specifically is a rotation type dust fall sampling device.

Background

Air natural dust fall is one of important indexes of environmental air quality monitoring, at present, the national environmental monitoring department carries out air natural dust fall monitoring according to the national standard GB/T15265-1994 environmental air dust fall gravimetric method, the foreign environmental monitoring department generally carries out air natural dust fall monitoring according to the international standard ISO-DIS4222-2-80 air quality atmospheric dust fall measurement horizontal sedimentation cylinder method or self-calibration, but in the dust fall sampling process, the dust in a cylindrical dust collection cylinder easily flies out along with the wind, the quality control measures for collecting field parallel samples are not adopted, the implementation effect of the measures for removing bird interference is poor, and the like, so that the sampling effect is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rotation type dust fall sampling device to the dirt in the cylinder collection dirt jar that proposes in solving above-mentioned background art very easily along with the wind departure, do not gather the quality control measure of the parallel appearance in scene and get rid of the measure implementation effect poor scheduling factor of birds interference and lead to the not good problem of effect of sample.

In order to achieve the above object, the utility model provides a following technical scheme: a rotary dust fall sampling device comprises a fixed table, a first threaded hole is arranged in the middle of the top end of the fixed table, the first threaded hole is in threaded connection with a support pillar, the top end of the support pillar is fixedly connected with a fixing plate, the top end of the fixed plate is fixedly connected with a fixed seat, the top end of the inner wall of the fixed seat is fixedly provided with a motor, the top end of the fixed seat is provided with a through hole, the output end of the motor passes through the through hole and is connected with a connecting block through a thread, second threaded holes are formed in two sides of the connecting block, racket-shaped fixing frames are in threaded connection with the two second threaded holes, the top ends of the two racket-shaped fixing frames are connected with a dust settling cylinder in a clamping manner, four corners on dust fall jar top are all fixed and are provided with the couple, the draw-in groove has all been seted up to four corners on the fixed frame top of racket shape, four the draw-in groove corresponds the setting with four couples respectively.

As a preferred technical scheme of the utility model, the top fixed mounting of connecting block has the transformer, the motor passes through transformer and external power supply electric connection.

As a preferred technical scheme of the utility model, the support column comprises loop bar, first spring, fixture block, second spring, movable block and branch, flexible hole has been seted up on the top of loop bar, the first spring of bottom fixedly connected with in flexible hole, the top fixedly connected with movable block of first spring, the mounting groove has been seted up to one side of movable block, one side fixedly connected with second spring of mounting groove, the one end of second spring is fixed with the fixture block, the top fixedly connected with branch of movable block.

As a preferred technical scheme of the utility model, a plurality of spacing groove, a plurality of have been seted up to one side of loop bar the spacing groove corresponds the setting with a plurality of fixture block respectively.

As an optimized technical scheme of the utility model, the fixed shock pad that is provided with in fixing base and the junction of fixed plate.

Compared with the prior art, the beneficial effects of the utility model are that: the device has simple structure and convenient operation, the rotary sampling of the design is dynamic sampling, the relative positions of two dust falling cylinders with the same height, the same material and the same inlet area are not fixed and are all in the same transformation, so that the ground dust rising and the roof dust rising almost have the same influence on the two dust falling cylinders, therefore, the precision of laboratory parallel sample analysis is necessarily very good, the dust falling cylinders are driven by a motor to rotate at low speed continuously, birds cannot inhabit on the dust falling cylinders, thereby the rotary sampling effectively prevents the interference of the birds, the circular platform-shaped dust falling cylinders with circular tubes are adopted, the diameter of the circular tubes is smaller than the diameter of the bottom of the circular platform, under the condition of strong wind, the air flow enters a conical body part through the circular tubes at a certain speed, the air flow speed is weakened due to space enlargement, the speed of the micro dust deposited on the dust collecting cylinders is weakened along with the ascending speed of the air flow, and the area of the, the dust will bounce to the bottom of the cylinder when it hits the wall, so the design can effectively control the influence of the air flow on the dust.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a front cross-sectional view of the support post of the present invention;

fig. 3 is a structural diagram of the dustfall cylinder of the present invention;

fig. 4 is a structural view of the racket-shaped fixing frame of the present invention.

In the figure: 1. a fixed table; 2. a support pillar; 3. a dust settling cylinder; 4. hooking; 5. a fixed seat; 6. a motor; 7. a racket-shaped fixing frame; 8. connecting blocks; 9. a fixing plate; 10. a shock pad; 11. a loop bar; 12. a first spring; 13. a limiting groove; 14. a clamping block; 15. a second spring; 16. a moving block; 17. a strut; 18. a card slot; 19. a transformer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the utility model provides a rotary dust-fall sampling device, which comprises a fixed table 1, wherein a first threaded hole is arranged in the middle of the top end of the fixed table 1, the first threaded hole is in threaded connection with a support column 2, the top end of the support column 2 is fixedly connected with a fixed plate 9, the top end of the fixed plate 9 is fixedly connected with a fixed seat 5, the top end of the inner wall of the fixed seat 5 is fixedly provided with a motor 6, the top end of the fixed seat 5 is provided with a through hole, the output end of the motor 6 passes through and is in threaded connection with a connecting block 8, both sides of the connecting block 8 are provided with second threaded holes, both the two second threaded holes are in threaded connection with a racket-shaped fixed frame 7, the top ends of the two racket-shaped fixed frames 7 are in clamping connection with a, the four slots 18 are respectively arranged corresponding to the four hooks 4.

Preferably, the top fixed mounting of connecting block 8 has transformer 19, and motor 6 passes through transformer 19 and external power supply electric connection, adjusts the rotational speed of motor 6 through adjusting transformer 19, is convenient for sample.

Preferably, the support column 2 is by loop bar 11, first spring 12, the fixture block 14, second spring 15, movable block 16 and branch 17 are constituteed, telescopic hole has been seted up on the top of loop bar 11, first spring 12 of the bottom fixedly connected with in telescopic hole, first spring 12's top fixedly connected with movable block 16, the mounting groove has been seted up to one side of movable block 16, one side fixedly connected with second spring 15 of mounting groove, the one end of second spring 15 is fixed with fixture block 14, movable block 16's top fixedly connected with branch 17, the block through fixture block 14's spacing groove 13 is fixed to make whole device tend to stably, avoid at the in-process of sample, the device takes place to rock and leads to producing the influence to the sample.

Preferably, a plurality of spacing groove 13 has been seted up to one side of loop bar 11, and a plurality of spacing groove 13 corresponds the setting with a plurality of fixture block 14 respectively, and the setting of a plurality of spacing groove 13 is convenient for highly adjusting support column 2, and then highly adjusting dust fall jar 3, realizes the variety of sample change.

Preferably, the fixed shock pad 10 that is provided with in the junction of fixing base 5 and fixed plate 9, the setting of shock pad 10 plays absorbing effect at the in-process of motor 6 work, avoids the production of noise.

When the rotary dust-settling sampling device is used, an operator firstly connects the motor 6 with the fixed seat 5, then connects the fixed seat 5 with the upper end of the supporting column 2, then inserts the supporting column 2 into the hole of the fixed table 1, then connects the fixed seat with the connecting block 8, then connects the racket-shaped fixed frame 7 with the connecting block 8, then hangs the dust-settling cylinder 3 on the racket-shaped fixed frame 7, starts the motor 6, adjusts the transformer 19, makes the motor 6 rotate at 2 revolutions per second, well makes the original sampling record, the dust-settling cylinder 3 adopts the circular table-shaped dust-settling cylinder with a round pipe, the diameter of the round pipe is smaller than the bottom diameter of the circular table, under the condition of strong wind, the air flow enters the conical body part through the round pipe at a certain speed, because the space is enlarged, the air flow speed is weakened, the speed of the micro dust deposited on the dust-settling cylinder along with the air flow, and because the area of the ascending space is continuously reduced, the micro-dust can rebound to the bottom of the cylinder when colliding with the wall surface, therefore, the design effectively controls the influence of the airflow on the micro-dust at the bottom of the cylinder.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a rotation type dust fall sampling device, includes fixed station (1), its characterized in that: the middle part of the top end of the fixed platform (1) is provided with a first threaded hole, the first threaded hole is in threaded connection with a support column (2), the top end of the support column (2) is fixedly connected with a fixed plate (9), the top end of the fixed plate (9) is fixedly connected with a fixed seat (5), the top end of the inner wall of the fixed seat (5) is fixedly provided with a motor (6), the top end of the fixed seat (5) is provided with a through hole, the output end of the motor (6) penetrates through a threaded connection with a connecting block (8), the two sides of the connecting block (8) are respectively provided with a second threaded hole, the two second threaded holes are respectively in threaded connection with a racket-shaped fixed frame (7), the top ends of the two racket-shaped fixed frames (7) are clamped and connected with a dust-falling cylinder (3), four corners of the top end of the dust-falling cylinder (3, the four clamping grooves (18) are respectively arranged corresponding to the four hooks (4).

2. The rotary dust-fall sampling device according to claim 1, characterized in that: the top fixed mounting of connecting block (8) has transformer (19), motor (6) pass through transformer (19) and external power electric connection.

3. The rotary dust-fall sampling device according to claim 1, characterized in that: the supporting column (2) comprises a sleeve rod (11), a first spring (12), a clamping block (14), a second spring (15), a moving block (16) and a supporting rod (17), a telescopic hole is formed in the top end of the sleeve rod (11), the first spring (12) is fixedly connected to the bottom end of the telescopic hole, the moving block (16) is fixedly connected to the top end of the first spring (12), a mounting groove is formed in one side of the moving block (16), the second spring (15) is fixedly connected to one side of the mounting groove, the clamping block (14) is fixed to one end of the second spring (15), and the supporting rod (17) is fixedly connected to the top end of the moving block (16).

4. A rotary dust-fall sampling device according to claim 3, characterized in that: a plurality of limiting grooves (13) are formed in one side of the sleeve rod (11), and the limiting grooves (13) are respectively arranged corresponding to the clamping blocks (14).

5. The rotary dust-fall sampling device according to claim 1, characterized in that: and a shock pad (10) is fixedly arranged at the joint of the fixed seat (5) and the fixed plate (9).